IAEA-TECDOC-575
INTERNATIONAL CENTRE FOR THEORETICAL PHYSICS, TRIESTE Scientific Activities in 1989
TECHNICAA L DOCUMENT ISSUEE TH Y DB INTERNATIONAL ATOMIC ENERGY AGENCY, VIENNA, 1990 INTERNATIONAL CENTRE FOR THEORETICAL PHYSICS, TRIESTE: SCIENTIFIC ACTIVITIES IN 1989 IAEA, VIENNA, 1990 IAEA-TECDOC-575 ISSN 1011-4289
Printed by the IAEA in Austria September 1990 The IAEA does not normally maintain stocks of reports in this series. However, microfiche copies of these reports can be obtained from
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PAR I T Reviescientifie th f wo c activitie n 1989...... i s 1 Statistical digest: Summary of participation (Calendar 1989)...... 5 Summar f participatioo y n 198 . 1988...... 9vs 6 Participation by geographical areas...... 6 Numbe f scientisto r person/monthd an s y activities...... ,...... b s ? Summary of all activities...... 8 Participatio y activities...... b n 9 e scientifiTh PAR I I T c programme
Fundamental physics: Research in high energy physics, fundamental theory and astrophysics...... 1 5 Spring school and workshop on superstrings...... 1 6 Summer schoo hign i l h energy physic cosmology...... d san 7 .1 Trieste Conference on supermembranes and physics in 2+1 dimensions...... 1 9 Trieste Conferenc recenn o e t development conforman i s i field theories...... 20 25th Anniversary Conference on "Frontiers in physics, high technolog d mathematics"...... 2an y 1
Condensed matter physics: Researc condensen hi d matter physics...... 22 Fourth international worksho computationan po l condensed matter physics: "Total energ d forcan ye methods"...... 23 College on atomic and molecular physics: Photon assisted collisions in atoms and molecules...... 24 Experimental worksho hign po h temperature superconductors...... 25 Spring college in materials science on "Ceramics and composite materials"...... 26
Conferenc oxygen eo n disorder effect hign i s c superconductors...... 2hT 7 Working party on modelling thermomechanical behaviour of materials...... 29 Working part n fracturo y e physics...... 29 Miniworksho strongln o p y correlated electron systems in condensed matter...... 30 Research worksho condensen pi d matter, atomi moleculad can r physics.....1 .3 International symposiu highlightn mo condensen i s d matter physics...... 33 Adriatico working party on condensed matter properties of neutron stars..34
Mathematics: Mathematics research...... 36 Workshop on theoretical fluid mechanics and applications...... 3 7 Topical meetin hyperbolin go c geometr ergodid an y c theory...... 8 .3 Topical meetin variationan o g l problem analysis...... n i s 9 .3 College on differential geometry...... 40
Physics and energy: Fourth workshop on perspectives in nuclear physics at intermediate energies...... 42 Spring college on plasma physics...... 43 Worksho materialn po s scienc physicd ean f non-conventionaso l energy sources...... 44 Workshop on interaction between physics and architecture in environment conscious design...... 45
Physics and environment: Worksho radon po n monitorin n radioprotectiongi , environmental radioactivity and earth sciences...... 47 Colleg soin o e l physics...... 8 .4 Third Autumn worksho atmospherin po c radiatio cloud nan d physics...... 9 .4
Applied physics: Course on basic telecommunications science...... 50 College on theoretical and experimental radiopropagation physics...... 51 Workshop on remote sensing techniques with applications to agriculture, wate weathed an r r resources...... 52 Second ICFA school on instrumentation in elementary particle physics...... 54 Fifth college on microprocessors: Technology and applications in physics....54 Second workshop on telematics...... 55 ICTP-INFN Course in basic VLSI design techniques...... 56
Physics Space:the of Workshop on space physics: Materials in microgravity...... 58
Anniversary Adriatico Research Conferences: Interface between quantum field theor condensed an y d matter physics...... 0 .6 Quasicrystals...... 61 Strongly correlated electron systems...... 62 Computation physicn si physicd san computation...... n si 3 .6
Other research...... 65 Microprocessor Laboratory...... 66 High Temperature Superconductivity Experimental Laboratory...... 8 .6 LAM P- Laser , atomi moleculad an c r physics...... 71 Long-term scientific visitors...... 72 Network of Associate Members and Federated institutes: Regular Associates...... 73 Senior Associates...... 74 Junior Associates...... 5 .7 Federation Agreements...... 76 Trainin d researcgan t Italiaha n laboratories...... 8 .7 Regional activities co-sponsore e Centre...... th y b d 9 .7 The ICTP Donation Scheme...... 80 Science, High Technolog Development...... 8d yan 1 UNESCO programm histore th n f science...... 8eyo o 2 Hosted activities...... 83 Awards: Dirac Medals of the ICTP...... 84 Hideki Yukawa Prize...... 84
PART III Publications issued in 1989...... 85 Preprints and internal reports in: Fundamental physics...... 86 Condensed matter physics...... 6 .9 Mathematics...... 1 02 Physic energy...... d san 8 0 .1 Physic livine th f go s state...... 1 .11 Physic environment...... d an s 1 .11 Applied physics...... 11 2 PARTl
A E SCIENTIFIREVIETH F WO C ACTIVITIE 198N SI 9 e Internationaath t l Centr r Theoreticafo e l Physics, Trieste, Italy
GENERAL
The main field f researcso training-for-researcd han Centre th t h198n a ei 9 were: ) (a Fundamental physics (high energ d particlan y e physics, cosmologd an y astrophysics); ) (b Condensed matter, atomi moleculad an c r physics (condensed matte relatedd an r , atomi moleculad an c r physics, materials science); ) (c Mathematics (applicable mathematics, analysis, differential geometry, ergodic theory, theoretical fluid mechanics); (d) Physic energd an s y (nuclear physics, plasma physics, non-conventional energy); (e) Physics and environment (soil physics, environmental radioactivity, physics of the atmosphere); ) (f Physic e spacth f eo s (microgravity); ) (g Applied physic d higan sh technology (microprocessors, communications, lasers, computational physics, telematics, remote sensing, instrumentationd an ) (h) Science, high technology and development. e ICTTh P celebrate 25ts dit h anniversar Octobe1 3 n o y r 1989 wit academin ha c ceremony with the Prime Minister of Italy, Mr. Giulio Andreotti, as the guest of honour, followed by a Symposium on "Frontiers in physics, high technology and mathematics", attended by 138 participants. Some 4100 scientists tooe Programm th kactivitiee th n pare Centri th n i d tf r o san ee fo training at Italian laboratories, staying for a total of almost 4800 person/months. Sixty-two percen f theo t m were from developing countries totae th , f l accountino person/months % 84 r gfo . Associate Members from developing countries numbere f theo m4 d 64 wer170 d e,an researchers from federated institutes in developing countries. An previoui s s years e implementatioth , e programmth f o n s beeha e n made possible throug e generouhth s financial contribution fro Governmene mth f Italo t y which amount abouo t s t $ 15,000,00US 0 (US$ 6,670,00 e ordinarth s a 0 y contributio $ 8,420,00US d an n0 froe mth Direzione Generat Cooperaziona l r epe e allo Sviluppo, thes supporn ei f somo t e activitiee th t a s ICTP itself, of the Training Programme in Italian Laboratories and of the External Activities). e contributionTh e Internationath f o s l Atomic Energy f AgencUNESCo d an y O amounteo t d US$1,261,00 $ 329,600US d ,an 0 respectively. The Centre also acknowledges with gratitude contributions froe Unitemth d Nations University, UNU (US$ 315,000), Swedish Agency for Research Cooperation with Developing Countries, SAREC (US$ 203,000), the Kuwait Arab Fund (US$ 150,000), Kuwait Foundation for the Advancemen f Scienco t e (US$ 41,000) Governmene th , f Japao t n (US$ 39,000) e Italiath , n Istituto Nazional i Fisiced a Nucleare (US$ 36,000) Royae th , l Society (USK U , $ 30,000), Kuwait (US$ 22,000 s wela s other)a l s from Institut e Matemâticd o a Pur e Aplicadaa , Brazil (US$16,000), the American Physical Society, USA (US$ 10,000), Comision Interministerial Ciencia y Tecnologfa, Spain (US$ 10,000), the Islamic Republic of Iran (US$ 6,700) and the Universit f Qatao y r (US$ 3,000).
FUNDAMENTAL PHYSICS
Researc n i high-energh y physic s carrie wa t sthroughou ou d e yeath t r wite th h participatio 3 physicist10 f o n s from developing countriea tota f f 181o o l t two-weeA . ou s k school and workshop on superstrings held in April was attended by 61 physicists from developing countriesa tota f f e hundre198o o l On t d .fifty-fiv ou ,an d e physicists from developing countriestotaa f f 246o o l t , ou too, ke Summe th par n i t r Schoo n High-Energi l y Physicd an s Cosmology (June-August) o one-weeTw . k conferencen receno e t on development— s n i s conformai field theories and one on supermembranes and physics in 2+1 dimensions — were held in July and October respectively with, in all, 100 participants (26 from developing countries).
CONDENSED MATTER, ATOMIC MOLECULARAND PHYSICS
Research was conducted throughout the year with 62 physicists from developing countries out of a total of 85. The year started with the four-day Fourth International Workshop on Computational Condensed Matter Physic n "Totao s l Energ d Forcan y e Methods" wite th h participatio 0 scientist2 f o n s from developing countriea tota f f 118o o l t collegA .ou s n o e atomic and molecular physics (Photon Assisted Collisions in Atoms and Molecules) followed in February, lasted three weeks and was attended by 62 physicists from developing countries out of a total of 86. A two-week experimental workshop on high temperature superconductors took place in April with the participation of 77 scientists from developing countries out of a total of
96. This workshop was followed by a conference on oxygen disorder effects in high T0 superconductors attended by 47 scientists from developing countries out of a total of 75. In May, there were two two-week working parties — one on modelling thermomechanical behaviour of materials and one on fracture physics — in which 52 scientists from developing countries out of 69 took part. The theme of the six-week Spring College on Materials Science, held in April- May, was "Ceramics and Composite Materials". It was attended by 110 physicists from developing countrietotaa f f 138 o o Researcle t Th .sou h Worksho Condensen pi d Matter, Atomic d Moleculaan r Physics (mid June-September) also include workshoa d strongln po y correlated electron systems symposiua , highlightn mo condensen o s d matter physic workina d an s g party on condensed matter properties of neutron stars. In total, 438 scientists took part in this programm f whico wer3 t h30 eou e from developing countries.
MATHEMATICS
Research in mathematics was carried out throughout the year with the participation of 73 scientists from developing countries out of a total of 85. A three-week workshop on theoretical fluid mechanics was held in January with the participation of 62 scientists from developing countries out of a total of 85. Two topical meetings — one on hyperbolic geometry and ergodic n variationao e on theor d l an yproblem n analysii s s which took plac n Aprii ed Septembe an l r respectively— were attended by 100 mathematicians from developing countries out of a total of 177 collegA . differentian eo l geometry hel Novemben di attended scientist0 an r 11 y db s from developin lase th t s high-levewa g0 countrietota18 a f f l o o lcours t sou mathematicn eo 1989n si .
PHYSICS AND ENERGY
A five-day workshop, the fourth in this series, on perspectives in nuclear physics at intermediat s attende 3 wa participant3 d ey b dan energies y Ma s hel fron wa i d, m developing countries out of a total of 124. A four-week college on plasma physics followed, with the participatio 6 physicist10 f no s from developing countrietotaa f f 172o o l t n SeptemberI .ou s , two workshops — one on materials science and physics of non-conventional energy sources and one on the interaction between physics and architecture in environment conscious design — of a total duratio f threno e weeks, attracte participant2 19 d s from developing countrietotaa f o l t sou of 251. Some research was also carried out in plasma physics by 11 physicists from developing countries.
PHYSICS AND ENVIRONMENT
A two-week worksho n radoo p n monitorin n radioprotectioni g , environmental radioactivity and earth sciences was held in April. Sixty-three scientists from developing countries out of a too7 tota9 kf . o lit par n i t In Octobe d Decembean r r respectively e Centrth , e hel a three-weed k colleg n soio e l physics and a three-week workshop on atmospheric radiation and cloud physics which altogether welcome scientist6 12 d s from developing countrietotaa f f 179o o l t .ou s
APPLIED PHYSICS AND HIGH TECHNOLOGY
The High-Temperature Superconductivity Laboratory started its activity in Spring with 12 scientists from developing countries out of a total of 16. Fifteen physicists from developing 6 hav countrie1 totaa f f eo o l worket e Microprocessorou th s n i d s Laboratory three-weeA . k colleg microprocessorn eo hels attendes Octoben kindwa s i 0 it fift e wa df 10 — th hd o y dsan — b r participants from developing countries out of a total of 114. It was followed by a four-week course on telematics in November with 85 scientists from developing countries out of a total of 92 and the four-week ICTP-INFN course in basic VLSI design techniques which took place in December with an audience of 36 participants from developing countries out of a total of 47. Two closely-relate n basido coursee c on telecommunication — s n o se sciencon d an e theoretical and experimental radiopropagation physics — of a total duration of six weeks — were hel n January-Februari d y wit totaa h l participatio physicist3 14 f o n s from developing countries a tota f f 173o o l t .ou They were followe coursa y b dn remot o e e sensing techniques with application o agriculturet s , wate d weathean r r totaa resources f f 101o o 6 scientistl 7 t , Ou . s from developing countries took part in it. The two-week ICFA School on Instrumentation in Elementary Particle Physics held in June was attended by 40 experimentalists from developing countrietotaa f f 102o o l t . ou s
PHYSICS OF THE SPACE
e activit On s hel n thiwa ydi sWorkshoe th fiel d— "Materialn po n Microgravity"i s , which attendes scientist3 wa 7 y d b fro 2 s(3 m developing countries).
ANNIVERSARY ADRIATICO RESEARCH CONFERENCES
In 1989, the series of the Anniversary Adriatico Research Conferences included short meetings on: interface between quantum field theory and condensed matter physics; quasicrystals; strongly correlated electron systems computationd an ; n physici s physicd an s n i s computation e hundreOn .thirty-eighd dan t scientists from developing countries totaa f f o o l t ou , 305, took part.
SCIENCE, HIGH TECHNOLOGY AND DEVELOPMENT
As in the past, a number of the experts and leading scientists taking part in the activities e Centrth t a e lecture n s physicrelevancit o d d an s developmento t e n all I 3 lecture.4 , s were give n 1989ni .
TRAINING AT ITALIAN LABORATORIES
One hundred and seventy scientists from developing countries carried out research at Italian academic and industrial laboratories under a programme which started in 1982 with the financial support of the Italian Direzione Generale per la Cooperazione allo Sviluppo (Ministry for Foreign Affairs, Rome, Italy).
EXTERNAL ACTIVITIES
e fiel th f trainind o n I r physicfo g d mathematican s s teachers e Centrth , e sponsore3 13 d courses, workshops and symposia in 38 countries. Ten fellowships for visiting scholars to 8 countries were granted. These programmes were financed by the Italian Direzione Generale per la Cooperazione allo Sviluppo (Ministry for Foreign Affairs, Rome, Italy).
MEETINGS HOSTED CENTRETHE BY
The Centre hoste meetings9 d1 . Nin f themeo were organize Thire th dy d b Worl d Academy of Sciences. Other organizing institutions wer e Italiaeth n National Institut f Nucleaeo r Physics, the International Centre for Genetic Engineering and Biotechnology, the International School for Advanced Studies and the Trieste Research Area.
BOOKS AND EQUIPMENT DONATION PROGRAMME
During 1989 e Centr th s abl, distributo wa et e 13184 journals, 4062 proceedings, 6119 book 828d an s9 publication moro st e thainstitution0 n70 developin0 10 n i s g countries. Besides the donations directly distributed by the Centre, about 100 donations of complete sets of back- issues of journals have been shipped directly by the donors to about 60 institutions in 40 developing countries. Hundred f pieceo s f equipmeno s t from CERN were sen o institutiont t e followinth n i s g countries: Colombia, P.R. China, Iran, Jordan and Pakistan. The Centre received a generous offe f approximatelo r 3 item4 y f surpluo s s equipment fro . IftikhamDr r Ahma n Londoni d . They were sent to 13 universities in the following countries: Bangladesh, Colombia, Egypt, Iraq, Jamaica, Nigeria, Pakistan, Peru, Tanzani Ugandad aan .
AWARDS
Michael B. Green from Queen Mary College, London, UK, and John H. Schwarz from the California Institut f Technologyo e , Pasadena, USA, wer recipiente eth e 198th f 9o s Dirac Medals of the International Centre for Theoretical Physics, "for their basic contributions to the development of superstring theory. Most significant was their discovery that chiral gauge anomalies absentdimensional classare a ten for of superstring theories". The 1989 ICTP Prize in honour of Hideki Yukawa was awarded to Dr. Ashoke Sen from the Tata Institute of Fundamental Research, Bombay, India, "for his contributions to string theory, particularin applicationthe and sigmafor the of model approach heteroticthe to string theory".
PREPRINTS AND INTERNAL REPORTS
In 1989, 432 preprints and internal reports were issued. STATISTICAL DIGEST
Summary of participation in the research and training-for-research activities at the ICTP in 1989
(MU3r-- ! LUUJUjyJUJujlUUJLULUUJ>u ;LlJ>LULUUJ B * 2 x S $ XX X *s | U5 <0 xx §5 * r^ Is- x > 8 "1=1E § fr £3 <2 S ÛJ Bjs-.sgfr s o *lMf]iiit*i*!. s;f « c 8 a e« n S s CO D— C O C J O - T x o> » 2 CM 5 X X II Q fli? X X > 2i c X X LU > w tfi x x o SQ O O X S X X I ° ^__Q LU •§ S| _ XX Q ^^ «So o x x 2 U5 I •3. E» __ ^" 00 jl) O £C0 5 CO «a- c &e -g. B i s ^^ ^~ si. ,_ a s a „SR 8 fi Œ 01 :§s i U3 ^ T- o B « iiB Pit. H P it Q?> c« •o c a ll a i n «: KB O u. c o CO n I * g X r- s S X 1| o o 11 X > O X Summary of participation 198. 198vs 9 8 Visitors Person/months Total Percentage (Dev . totalvs . ) Dev. Ind. Dev. Ind. Visitors M/M VisitorM M/ s 1989 2532 1568 4057.84 761.57 4100 4819.41 61.76% 84.20% 1988 2220 1894 3729.47 867.18 4114 4596.65 53.96% 81.13% Increase/ Decrease +14.05% -20.79% +8.80% -13.87% -0.34% +4.85% The above figures for 1989 include: Training in Italian laboratories - 1116.6 0 17 6 170 1116.66 100.00% 100.00% above Th e figure r 198fo s 8 include: Trainin n Italiai g n laboratories 170 - 1093.76 170 1093.76 100.00% 100.00% Participation by geographical areas e researcth d n training-for-researci an h h activities e ICTo th fn 198 i P 9 Geographical Areas Visitors Person/months Total for Area Dev. Ind. Dev. Ind.Visitors Person/months Africa 489 - 790.96 - 489 790.96 Asia 1137 45 2068.45 54.55 1182 2123.00 Europe 446 1166 436.84 544.42 1612 981.26 Indonesia and Oceania 1 1 9 9.85 4.24 20 14.09 North and Central America 102 282 201.26 135.36 384 336.62 South America 347 - 550.48 - 347 550.48 International Organizations - 66 - 23.00 66 23.00 TOTAL 2532 1568 4057.84 761.57 4100 4819.41 % Developing vs. Total 61.76% 84.20% Breakdown of the number of scientists who worked at the ICTP in 1989 and of person/months by scientific fields Other tables show thatotae th t l numbe f scientisto r e ICTcamo th s 410wh Pi o et 0 while the total numbe f person/montho r s 4819.41i e stable th n I s .whic h follo e numbewth f o r scientists wilhighee b l r since severa f theo l m took par morn i t e thaactivitye non . Tabl eI show summarsa breakdowe th f o y n while Tabl I showeII detailse sth . Percentages totae refeth l o t rparticipatio grane th fiele . dth dvs total n ni . Table I Summarized breakdow y fieldb n f o activits y Activity Number of Visitors Numbe f o Person/monthr s Dev. Ind. Tota% l Dev. Ind. % Total 1. Fundamental Physics 385 478 863 17.61 503..08 327.09 830.17 17.23 2. Condensed Matter 733 372 1105 22.55 809..64 127.42 937.06 19.44 3. Mathematics 345 182 527 10.75 459..00 94.98 553,.98 11.49 4. Physic Energ& s y 342 217 559 11.41 216..34 53.10 269,.44 5.59 5. Physics & Envir. 189 87 276 5.63 110,,66 28.37 139..03 2.88 7. Applied Physics 507 154 661 13.49 538,,73 77.09 615..82 12.78 9. Physic Space th f so e 32 41 73 1.49 21.,47 10.39 31..86 0.66 10. Adriatico Conferences 138 167 305 6.22 31.,31 28.69 60 .00 1.24 11. Other research 300 62 362 7.39 250,.95 14.44 265,.39 5.51 TOTAL 2971 1760 4731 96.54 2941.18 761.57 3702.75 76.82 Outside activities Italian laboratories 170 170 3.47 1116.66 1116.66 23.17 GRAND TOTAL 3141 1760 4901 4057.84 761.57 4819.41 Hosted activities . Scientifi1 c Council E.U.. GVI 2. Meeting of ISCSS. . Thir3 d World Networ f Scientifio k c Organizations. 4. INFN School on advanced Studies in Nuclear and Subnuclear Physics. 5. Womens' Study Group. . Workshop/Symposiu6 "Moleculan mo r Genetic f Loweo s r Eukaryotes" . Bouche7 t Council Meeting. 8. Trieste Encounters on Congnitive Science. 9. Meeting on Marketing Strategies. . 1SAR0 F (Arab Friends Society) General Meeting. 11. Meeting on "Fundamentals of Quantum Mechanics". . 1Internationa2 l Schoo f Philosopho l f Scienceo y . 1 3. I Meeting of the International Commission on Food for Peace. 14. TWAS Council Meeting. . 1Meetin5 f TWOWgo S (Third World Organizatio r Womenfo Sciencen i ) Committee. . TWNS16 O (Third World Networ f Scientifio k c Organizations) Executive Board Meeting. . 1Worksho7 r Policpfo y Maker Environmenn so Developmentd an t . 18. International Conference on Desert Environment. 19. INFN School on VLSI Design. In addition, the Centre supported 133 regional courses, workshops and conferences in all region worlde th f o s. Tabl I I showe statisticaa s l summar activitiee th e ICT f th o y Pt a s itseld outsidan f s it e premises. Table II Statistical summary of all activities d outsidan hel e t ICTa dth e P Figure researcn so h include longshort-terd an - m scientist wels sa Associats a l e Members, some scientists from Federated Institutes and seminar lecturers. Activity Number of Visitors Numbe f o Person/monthr s Dev. Ind. Total Dev. Ind. Total ICTPthe : At 1. (a) Research: Fundamental Physics 103 78 181 276.02 177.18 453.20 Condensed Matter 62 23 85 163.10 5.50 168.60 Mathematics 73 12 85 242.15 8.61 250.76 Plasma Physics 1 1 1 12 15.26 0.26 15.52 Microprocessorb La s 15 1 16 100.76 0.10 100.86 Hig Supercc hT b La . 12 4 16 31.37 14.14 45.51 Other 219 53 272 239.62 13.63 253.25 Total 495 172 667 1068.28 219.42 1287.70 % Tota . Granvs l d Total 10.01% 3.51% 13.61% 22.17% 4.55% 26.72% ) Trainin(b r researcgfo h (courses, workshops and conferences) Total 2476 1588 4064 1872.90 542.15 2415.04 % Total vs. Grand Total 50.52% 32.40% 82.92% 38.86% 11.25% 50.11% 2 . Outside activities , Italian laboratories 170 - 170 1116.66 - 1116.66 % Total vs. Grand Total 3.47% 23.17% GRAND TOTAL 3141 1760 4901 4057.84 761.57 4819.41 8 Table III Participation in the research and training-for-research activities e ICT ath tn 198I P 9 Activity Dates Number of Visitors Numbe f o Person/monthr s Dev. Ind. Total Dev. Ind. Total Fundamental Physics Researc fundamentan hi l physic astrophysicd san s l yeaal r 103 78 181 276.02 177.18 453.20 Spring schoo workshod an l superstringn po s 3-14 Apr 61 137 198 24.94 51.90 76.84 Summer schoo hign i l h energy physic cosmologd san y 26 Jun - 18 Aug 155 91 246 186.90 62.42 249.32 Trieste Conferenc supermembranen eo physicd san s dimension1 in2+ s l Ju 1 2 1 7- 9 43 52 2.23 11.32 13.55 Trieste Conferenc Recenn eo t developments in conformai field theories t Oc 4 - 2 17 31 48 2.32 4.96 7.28 25th Anniversary Conferenc "Frontiern o e n physicsi s , high technology and mathematics 31 Oct - 3 Nov 40 98 138 10.67 19.31 29.98 TOTAL 385 478 863 503.08 327.09 830.17 Gran. vs d% Total 17.61 17.23 Condensed Matter, Atomi d Moleculaan c r Physics Research in condensed matter physics all year 62 23 85 163.10 5.50 168.60 Fourth international workshop on computational condensed matter physics: "Total energ forcd an ye methods" 4 - 6 Jan 20 98 118 3.34 12.90 16.24 College on atomic and molecular physics: Photon assisted collisions in atoms and molecules b Fe 4 2 - n Ja 0 3 62 24 86 53.08 7.45 60.53 Experimental worksho hign po h temperature superconductors 30 Mar - 14 Apr 77 19 96 63.74 8.80 72.54 Spring colleg materialn ei s scienc "Ceramicn eo d san composite materials" 17 Apr - 26 May 110 28 138 152.82 13.93 166.75 Conference on oxygen disorder effects in high Tc superconductorr Ap 1 2 s - 8 1 47 28 75 8.80 4.69 13.49 Working part modellinn o y g thermomechanical behaviour of materials 29 May - 16 Jun 26 4 30 17.10 1.71 18.81 Working part fracturn o y e physics 29 May - 16 Jun 26 13 39 14.65 4.51 19.16 Subtotal 430 237 667 476.63 59.49 536.12 contd. Activity Dates Numbe f o visitorr s Number of Person/months Dev. Ind. Total Dev. Ind. Total molecular physics 1 9 Jun - 29 Sept 257 53 310 308.22 37.68 345.90 International symposiu highlightn mo condensen si d matter physics 1 - 3 Aug 7 21 28 1.02 2.50 3.52 Adriatico working part condensen o y d matter properties of neutron stars 1 1 - 29 Sept 16 15 31 9.42 7.12 16.54 TOTAL 733 372 1 105 809.64 127.42 937.06 % vs. Grand Total 22.55 19.44 Mathematics Research in mathematics l yeaal r 73 12 85 242.15 8.61 250.76 Workshop on theoretical fluid mechanics and applications 9 - 27 Jan 62 23 85 42.93 7.13 50.06 Topical meetin hyperbolin go c geometr ergodid yan c theory r Ap 8 2 - 7 1 50 37 87 23.27 13.31 36.58 Topical meeting on variational problems in analysis Sep8 - tg Au 8 2 50 40 90 32.31 12.37 44.68 College on differential geometry c De 1 - t 30Oc 110 70 180 118.34 53.56 171.90 TOTAL 345 1 82 527 459.00 94.98 553.98 % vs. Grand Total 10.75 11.49 Physics and Energy Researc Plasmhn i a Physics all year 11 1 12 15.26 0.26 15.52 Fourth workshop on perspectives in nuclear physics at intermediate energies y Ma 2 1 - 8 33 91 124 9.75 18.85 28.60 Spring colleg plasmn eo a physics 15 May - 9 Jun 106 66 172 87.08 20.59 107.67 Workshop on materials science and physics of non-conventional energy sources 1 1 - 29 Sept 163 42 205 99.76 10.71 110.47 Workshop on interaction between physics and architecture in environment conscious design Sep9 2 - t 5 2 29 17 46 4.49 2.69 7.18 TOTAL 342 217 559 216.34 53.10 269.44 % vs. Grand Total 11.41 5.59 contd. Activity Dates Number of visitors Number of Person/months Dev. Ind. Total Dev. Ind. Total Physics and Environment Worksho radon po n monitorin radioprotectionn gi , environmental radioactivity and earth sciences r Ap 4 1 - 3 63 34 97 28.33 8.78 37.11 College on soil physics 9 - 27 Oct 70 29 99 48.33 11.41 59.74 Third Autumn worksho atmospherin po c radiatio cloud nan d physics 27 Nov - 15 Dec 56 24 80 34.00 8.18 42.18 TOTAL 189 87 276 110.66 28.37 139.03 % vs. Grand Total 5.63 2.88 Applied Physics and High Technology Microprocessors laboratory all year 15 1 16 100.76 0.10 100.86 High Temperature Superconductivity Experimental laboratorc y De - r Ap 12 4 16 31.37 14.14 45.51 Cours basin eo c telecommunications science b Fe 3 - n 9Ja 74 11 85 74.96 2.83 77.79 College on theoretical and experimental radiopropagation physicb sFe 4 2 6- 69 19 88 56.73 4.82 61.55 Workshop on remote sensing techniques with applications to agriculture, water and weather resources 27 Feb - 21 Mar 76 25 101 61.65 12.00 73.65 Second ICFA schoo instrumentation o l n in elementary particle physics n Ju 3 2 1 2- 40 62 102 19.02 25.25 44.27 Fifth colleg microprocessorsn eo : Technology and applications in physics 2 - 27 Oct 100 14 114 99.01 8.63 107.64 Second worksho telematicn po s v No 4 2 - 6 85 7 92 62.21 1.26 63.47 ICTP-INFN Course in basic VLSI design techniques 6 Nov - 1 Dec 36 1 1 47 33.02 8.06 41.08 TOTAL 507 1 54 661 538.73 77.09 615.82 % vs. Grand Total 13.49 12.78 Physice Spacth f eo s Workshop on space physics: Materials in microgravitr y Ma 7 1 - b Fe 7 2 32 41 73 21.47 10.39 31.86 TOTAL 32 4 1 73 21.47 10.39 31.86 % vs. Grand Total 1.49 0.66 contd. l\5 Activity Dates Number of visitors Numbe f o Person/monthr s Dev. IndTota. l Dev. Ind. Total Anniversary Adriatico Research Conferences Interface between quantum field theory and condensed matter physics n Ju 2 03 -2 27 40 67 4.82 6.86 11 .68 Quasicrystals 4 - 7 Jul 24 39 63 5.33 6.69 12.02 Strongly correlated electron systems 18 - 21 Jul 34 51 85 6.25 7.67 13 .92 Computations in physics and physics in computation 5 - 9 Sept 53 37 90 14 .91 7.47 22.38 TOTAL 1 38 1 67 305 31 .31 28 .69 60 .00 . Granvs d% Total 6.22 1.24 Miscellaneous Miscellaneous research all year 215 47 262 238.14 12 .12 250.26 Science, high technolog developmend yan t all year 4 6 10 1.48 1.51 2.99 (Another 26 scientists participating in other ICTP programmes gave also lectures) Meeting on training and research at Italian laboratories 3 - 4 Mar 81 9 90 11 .33 0.81 12 .14 TOTAL 300 62 362 250 .95 14 .44 265 .39 . Granvs d% Total 7.39 5.51 Outside activities Trainin researcd gan t Italiaha n laboratories all year 170 - 170 1116 .66 - 1116 .66 TOTAL 1 70 . 170 1116 .66 « 1116 .66 % vs. Grand Total 3.47 23.17 GRAND TOTAL 3141 1760 4901 4057.84 761.57 4819.41 Hosted Activities T - CM ^ U- CM co . Scientific Council E.U.G VI. CD I I co B *•— ~î3 ü z: CO CM O r-- o 0 o CO ^ o a f~ ^— O .0 'S CO 'o o o CB c c w o rganiza i T3 CO _Q £ ' CD CO ^_ . INFN School on advanced St CO , Womens' Study Group. •*— 0 ^; co r^- LLt 'tn "o CM T- !=£ cn o CO r- •r- in 2 < 0) O 1 o en O 13 CÔ CD . Workshop/Symposiu n '^mo olecular « Q. , Bouchet Council Meeting. 1 CO "o "c o CM CD CD C O CD , Trieste Encounters on Cong 3 C CD 3 .92 ü a> o CO M •3< cri CD , Meeting on Marketing Straten%• —* a» "rt 'S CM trî . SARF (Arab Friends Society CD CD cb 'c u— K *- 0 (/) E CD o CO O o CD . Meeting on "Fundamentals o Quantui w •§ tu CM O J3 0 CM T- V ai •sj- C\l 2 0 C 0 o c W _ , International Schoo f Philo l o CD -Q i_ <5 -o .2 a. O , 1 Meeting of the International 0 o CD co o CD" •sr in ö 5 CM P o ci TWAS Council Meeting. >_ O O _N ^J "o co ^„^ 0 75 ^3 S e> CO o 0 c s CD c c CD C O CD E 0 E CD CD k_ Meeting TWOWS (Thirr dWo rt SI | Z -£ CO en P ô ._ o •Q "- > 0 •£ § LU 0) V- _> CD fv. "sr Q. LU (§ 2 CM 0 J3 I « •C-j Q) I ^ O o ~ 0) C N ® o "œ Q) j£ CO T3 C 0 Si c ü 0 * C O O CD tM. k_ Jentific ( T onment £ I_LJ E Q CO ) •c co -sj- ^-j en T|- CD CD CD c oa > CD E co P CD J3 v. CD International Conférence on Environr CD u . INFN School on VLSI Design. in Next page(s)lef tblank 13 PARTII FUNDAMENTAL PHYSICS Title: RESEARCH IN HIGH ENERGY PHYSICS, FUNDAMENTAL THEORY AND ASTROPHYSICS Dates: Throughout the year. Organizers: This research programm s organize wa e Directo e th Centre th y f b do r , Professor Abdus e residenSalamth d an t, physicists Drs. K.S. Narain . Randjbar-DaemiS , . E , Sezgin and J. Strathdee. Purpose: To contribute to the advancement of physics at an international standard through individual and team research, stimulate interaction between physicists from developing and industrialized nations, and create genuine research conditions that will encourage Associate Members and visitors from Federated Institutes in their work after their return home. Seminars: Celestial images: e historth f astronomicao y l charts. Sigma models with purely Wess-Zumino-Witten actions. On the zero mass of the graviton - A Dirac-Hamiltonian analysis 4 supersymmetriN= . c Yang-Mills theor f shellof y . Geometr f supergravito y y versus geometr f superstringso y . Yukawa coupling r three-generatiofo s n Gepner model. Analytic description of matter effects in solar neutrino oscillations (M.S.W. effect). The effects of new gauge bosons from Eg grand unified theories at e+e~, pp-colliders. Topological susceptibility and coolin a lattice n o g . Renormalizatio f topologicao n l quantum field theory. Effective actionr fo s gauge theories with Chern-Simons term. Area-preserving diffeomorphisms, membraned an s higher-spin algebras. Topological charge on a lattice. Non-renormalization theorems for non- perturbative effects in SUSY gauge theories. New infinite-dimensional superalgebras with central extension. Renormalization of string partition function. String amplitudes on effectively closed surfaces e ultravioleth n O . t behaviou e Wess-Zuminth f o r o mode supersymmetrid an l c quantum electrodynamics e spith n n structurO . e pomeronth f o e Kamiokand Th . e solar neutrino experiment. Mapping conformai field theories into 3-dimensional gauge theories. Topological field theories. Higher-spin fields in 2+1 dimensional conformai gravity. Quantization of non-critical strings. The irreducible superfield road to off-shell 10-D supergravity. Away from criticality: S-matrix approach. On strong renormalization scheme dependence of perturbative predictions in QCD and standard model. Multiloop calculations in P-adic string theory and Bruhat-Tits trees. Cosmic superstrings. Neutron stars. Applicatio f extendeo n 4 supersymmetrN= d e granth o dt y unification problems. Continuous Sugawara-like realizatio 1 conformaC= f o n i modelse Th . importance of being super-canonical, -gauged, and -chiral to be relativistic, discrete and stringy. Grand unification in four complex dimensions. Knot theory and quantum gravity. Geometry and quantization of topological gauge theories. Summarized data on the participation (Numbe f scientisto r y worlb s d regions) World regions Developing Industrialized TOTAL Africa 8 - 8 Asia 54 1 1 65 Europe 24 51 75 Indonesi Oceanid aan a - 1 1 North and Central America 3 9 12 South America 14 - 14 International Organizations - 6 6 TOTAL 1 03 78 1 81 15 Title: SPRING SCHOO WORKSHOD LAN SUPERSTRINGN PO S Dates: 3-14 April 1989. Organizers: Professors M. Green (Queen Mary College, London, UK), R. lengo (International School for Advanced Studies ISAS-SISSA, Trieste, Italy), A.M. Polyakov (Landau Institute of Theoretical Physics, Moscow, USSR), S. Randjbar-Daemi (Iran/ICTP), A. Strominger (University of California, Santa Barbara, USA) and E. Sezgin (Turkey/ICTP). Purpose: To cover several aspects of superstring theories including the more recent developments so that the participants can acquire crucial concepts and associated techniques. Programme: Topics: Conformai field theories. Higher loop computations. String compactifications. Baby universe. Beyond string perturbation theory. Lectures: School: String conformad an s i field theories. Baby universes. BRST coordinate invariant path integral measure and conformai properties in two dimensions. Conformai field theories. Spacetime supersymmetry in string theories. Covariant quantization of Green-Schwarz superstring. Chiral rings and N=2 superconformai theories. Two loop computations in superstring and quantum gravity. Supergravity/superstring. Sigma-model d renormalizatioan s f strino n g loops. Superstrings, super-Grassmannians and superconformai manifolds. Topics in superstring theory. Introduction to rational conformai field theory. N=2 string theory. Duality and canonical transformation n conformai s i field theory. Physic d mathematican s e frontierth t a s . String theor t higa y h energies. Workshop: Classica d quantuan l m gravity from strings n approacA . o constructint h g rational conformai field theories. 2-dimensional approac strino ht g field theory. Yukawa couplings in scalar field theories. 2-dimensional conformai gravity & supergravity SL(2,R) algebra and extension. A general action for topological quantum field theories. Construction of massless closed string state open i s n string field theory. Wess-Zumino-Witten-Novikov modetheora s a l y of free fields. Extended algebra d modulaan s r invariant partition functions. Superstrings with spontaneously broken supersymmetr theid an yr effective theories. Perturbing induced gravitn i y 1+1 dimensions. BRST quantizatio d renormalizatioan n f topologicao n l quantum field theories. Minimal conformai field theorieawad an yt a sfro m criticalit Todd an y a field theories. Correlation function r minimafo s l modele torusth n .o s Stringn expandina n i s g universe. Geometrd an y topology of the moduli space of Calabi-Yau manifolds. Covariant quantization of Green-Schwarz Superstrings. Conformai field theor f twisteo y d vertex operators. Tachyons, topology changing of defining polynomials and renormalization group flows in N=2 superconformai models. Background field equations for the heterotic string at non-zero temperature. Extensions of conformai symmetry: unitary representation e BRSth d T an sconstruction . ReviebaseN K f swo and applications. 4-dimensional heterotic superstrings from 13 dimensions. Operator formalism on higher genus Riemann surfaces. B-functio a gradien s a n n couplini t g constant space: consequences, limitations, applications to string effective actions. A c theorem in 4-dimensions. Null spinning strings. Continuu e algebramLi associated an s d non-linear dynamical systemsn A . attemp f p-adio t c one-loop computatio n i open n strings. World-sheet versus space-time symmetries in 4-dimensional superstrings. On the quantization of the Abelian Chern-Simons theory. Higher spin symmetries and higher spin gauge theories. Effective actions via string field theory. Geometr f quantuyo m loop knod san t theory. Simple approac BRSTo ht . 16 Summarized data on the participation (Number of scientists by world regions) World regions Developinq Industrialized TOTAL Africa 5 - 5 Asia 17 11 28 Europe 29 94 123 Indonesia and Oceania - 1 1 North and Central America 3 24 27 South America 7 - 7 International Organizations - 7 7 TOTAL 6 1 137 1 98 Directors and Lecturers 28 Participants 170 Member states represented 40 International Organizations represented 1 Applications received 260 Title: SUMMER SCHOOL IN HIGH ENERGY PHYSICS AND COSMOLOGY including Worksho superstringn po Jul4 1 y- 19892 (1 sd )an Workshop on phenomenology in high energy physics and cosmology (16-18 August 1989). Dates: 26 June - 18 August 1989. Organizers: Professor . ElliG s s (International Schoo r Advancefo l d Studies, ISAS-SISSA, Trieste, Italy), J.C. Pati (University of Maryland, College Park, USA), S. Randjbar-Daemi (Iran/ICTP, Trieste, Italy), E. Sezgin (Turkey/ICTP, Trieste, Italy) and Q. Shafi (University of Delaware, Newark, USA), in collaboration with the International School for Advanced Studies (ISAS-SISSA, Trieste e Italia,th Italyd n an Institut) r Nucleaefo r Physics (INFN, Rome, Italy). Purpose o providT : n informaa e l environmen r presentinfo t g topic f curreno s t interesn i t particle physics including superstrings, unified theories and cosmology. Programme: Topics: Conformai field theories. Compactification. Vertex operators and string amplitudes. Othe developmentw ne r strinn si g theories. The standard mode beyondd an l . Low energy supersymmetry. Key issues in flavour physics - fermion masses, mixing and CP. Non-perturbative aspect f SUSso Y QCD. Superstring phenomenology. Issue cosmolog n bansi g bi gt modelho y- , inflation, baryogenesis, dark matter. Lectures: Part : I Introductio o t stringn d conformaan s i field theory. Multi-loop amplitude n superstrini s g theory. Coulom s approacga b o rationat h l conformai field theories. String theory and 2-dim. quantum gravity. Landau-Ginzburg approach to N=2 superconformai field theory. Conformai field theory. N=2 string theory. Part : Physic It earle th f y o s universe. Perturbative QCD. Probin standare gth d electroweak 17 model. Inflation. Lattice QCD. Superphysics witD h QC .dynamica l quarks grano T . d unificatiod nan beyond. Flavour physics. Scalar particle searches. Towards a unification of mass scales. Gauge theorie d integrablan s e models. Trivialit Higgd an y s mass bound statua : s report. Inflatiod nan quantum cosmology. Interacting higher-spin actions from strings. Cosmological constant. Highlight f GR12o s e surfacTh . e tensio n hadroi n n nucleatio d othean n r first order phase transitions. Stellar structure, evolution and the solar neutrino problem (SNP). Microwave background radiatio d largan ne scale structur e universeth f o e . e SNPWIMPth d . Currenan s t stronstatue th problemP f o sgC . Three generation superstring models. Conformai field theorn i y the upper half plane. WIMPs and the solar pulsation problem (SPP). WIMPs in other stars: prediction observationsd an s . 4-dim. superstring models. Applicatio f conformano i field theoro t y string field theory. Workshop on superstrings: Fundamental length scale in string theory. The quartic effective action of the heterotic string and supersymmetry. Heterotic superstrings vacua based on non- compact current algebras. Topolog f singularitieo y phasd an s e diagrasuperconforma2 N= n mo i field theories. Contour integral representation of characters and supercharacters in rational conformai field theories. Real weight B-C systems and conformai field theory in higher genus. Massless and massive spinning superparticles. Duality and quantum groups. Minimal model in higher genus. Fusio braidind nan W-algebrn gi a extende cosed dan t conformai theories. Deforming e Venezianth o model ("q-strings") e rol f 2-dimo eTh . . quantum gravit n strini y g theory. General SU(2) coset model productd an s f Virasoro s o models- invariancS BR . n unusuai e l settings. Anomalies of the heterotic sigma models in a curved (1,0) superspace. Topological aspects of Calabi-Yau compactifications. Landau-Ginzburg Hamiltonians, expansions and N=2 superconformai models. Hidden symmetrie n strini s g theories. Non-perturbative aspect d exacan s t resultr fo s N=2 Landau-Ginzburg theories. Integrating out Kaluza-Klein modes in string compactifications. Quantization of dynamical systems in curved phase space. Quantization of general gauge theories in curved phase space. Uq[sl(2)] invariant operator minimad an s l theories fusion matrices. Workshop phenomenologyn o highn i energy physics cosmology:d an Experimental statuf so heavy flavour physics. Proton spin. The status on CP violation. Physics from the Mark II Detector and the SLC. Overview of three generation Calabi-Yau models. Strings at high temperature. The cosmological constant wit r withouo h t wormholes A natura. l connection betwee e origith nf o n hierarche inflatioth d nan mass-scalesn i y . Physic t LEPa s . 4-dim. superstring models. Physict sa the Fermilab Tevatron collider. Summarize e dparticipatio th dat n o a n (Number of scientists by world regions) World regions Developing Industrialized TOTAL Africa 16 - 16 Asia 75 4 79 Europe 46 49 95 Indonesi Oceanid aan a 1 1 2 North and Central America 5 27 32 South America 12 . 12 International Organizations . 10 1 0 TOTAL 1 55 9 1 246 Directors and Lecturers 46 Participants 200 Member states represented 47 International Organizations represented 2 Applications received 367 18 Title: TRIESTE CONFERENCE ON SUPERMEMBRANES AND PHYSICS IN 2+1 DIMENSIONS Dates: 17 - 21 July 1989. Organizers: Professor . DufM s f (Texa UniversityM A& s , USA) . Pop,C e (TexaM A& s University, . SezgiUSAE d )nan (Turkey/ICTP, Trieste, Italy). Purpose: To cover various aspects of physics in 2+1 dimensions, especially (super) membrane theories provido t d an platfora e, discussioa r mfo e up-to-dat th f o n e e statuth f o s field. Programme: Topics: Physics in 2+1 dimensions. Eleven dimensional supermembranes. Quantizatio spectrumd nan . Volume-preserving diffeomorphism d infinitean s - dimensional algebras. Singletons. Higher extended objects. Lectures: Membranes, extended objects and infinite-component wave equations. Supermembranes a review: . Toward a conformas i field theor r highefo y r spins. Infinite dimensional membrane symmetries that generalize the conformai symmetry of the string. Evolution equatio f stringo n d membranesan s . Singleto d doubletoan n n supermultipletf o s spacetime supergroup d infinitan s e spin superalgebras. Worldvolume supersymmetry from spacetime supersymmetry. Braiding matrices, modular transformations and topological field theory in 2+1 dimensions. New symmetries in 2+1 dimensions. Quantum topologically massive gravity. Topolog d 3-dimensionaan y l field theories. Area-preserving algebra d membranan s e topology. Geometr d topologan y f 3-manifoldso y . Non-Abelian Chern-Simons theory, conformai field theor d knoan yt polynomials. Covariant canonical quantizatio f superparticleso n e lighTh .t cone gauge 1 topologica2+ . l terms, anyon d theian sr possible physical applicatio n higi nc T h superconductivity. The supermembrane mass spectrum. New directions in supermembranes. Strings from membranes e origith :f conformao n i invariance spacetimw Ne . e superalgebrad an s their Kac-Moody extension. Consistent dynamic f higheo s r spin gauge fields. Commentn o s integrabilit n 2+1i ye larg Th .limiN e f extendeo t d conformai symmetries. Area-preserving diffeomorphisms and supermembrane Lorentz invariance. The E9 current of d=2, N=16 supergravity. Super Yang-Mills quantum mechanic d supermembranan s e spectrum. Trigonometrical structure constan e classicath r fo e algebrae tvacuu Li th l d man s states SU(<*>) Yang-Mills e covariantheoryth n O . t quantizatio f gaugo n e theories including supermembranes. BRST quantizatio e Green-Schwarth f o n z superstring. Chern-Simons supergravity. Chern-Simon theorie f symplectio s c super-diffeomorphisms. Structur f SDiffo e e weatheth , r forecasd an t solar activity. Virasoro algebra and a membrane symmetry. Gauge theory of singletons: results d perspectivesan . Real tunnelling geometrie e largth ed scalan s e topolog e universeth f o y . Generalized sigma e indemodelth xd theoreman s . Weyl-invarianc f membraneso e . Harmonic superspac supersymmetrn ei beyondd yan . Supermembrane blacn so k holes. Generic curved space supermembrane theories. Concluding remarks. Summarized data on the participation (Numbe f scientisto r y worlb s d regions) World regions Developing Industrialized TOTAL Asia 1 3 5 Europe 7 33 41 Nort Centrad han l America - 6 3 South America 1 - 2 International Organizations - 1 1 TOTAL 9 43 5 2 19 Director d Lectureran s s 28 Participants 24 Member states represented 20 International Organizations represented 1 Applications received 52 Title: TRIESTE CONFERENCE ON RECENT DEVELOPMENTS IN CONFORMAL FIELD THEORIES Dates: 2 - 4 October 1989. Organizers: Drs. E. Gava (Istituto Nazionale di Fisica Nucleare/ICTP), K.S. Narain (CERN, Geneva, Switzerland/ICTP), S. Randjbar-Daemi (Iran/ICTP), E. Sezgin (Turkey/ICTP) and J.B. Zuber (Commissariat à l'Energie Atomique, Saclay, France). Purpose o coveT : r recent development n conformai s i field theories, connection with string theories, Chern-Simons gauge theorie1 dimension 2+ e mathematica th n i s d an s l aspects suc quantus ha m groups, knot braidsd san . Lectures: Twisted conformai field theories. Extended chiral algebras, modular invariants fixed an ,d point conforman i s i field theories. Feigin-Fuchs representatio Riemann o n n surfaces. Fusion algebras and differential equations approach to RCFT. A coset construction for classical inlegrable hierarchies. S-matrix bootstra d rationaan p l integrable models. Conformai field theories and lattice integrable models. Unitarity of superstring theory. Quantum groups in conformai field theorie d integrablan s e systems. Correlation functio r SU(2fo n ) parafermionn o s the torus n expandinA . g univers n strini e g theory. Renormalizatio f higheo n r spin conserved currents. Generalized Toda field theories and S-matrices. Temperley-Lieb algebras. Rings of invariants for finite groups. W-algebras and parafields. The quantum group structure of 2D gravit d minimaan y l models. Aspecte connectioth f o s n between Chern-Simons-Witten Lagrangians and conformai field theories. Aspects of topological gauge theory in 2+1 dimensions and its relation to integrable lattice models. Affine characters and modular transformations. BRST quantization of conformai field theory on a random surface. Chiral bosonization of superconformai ghosts on Riemann surface and path-integral measures. Summarize e dparticipatio th datn o a n (Number of scientists by world regions) World regions Developing Industrialized TOTAL Africa 1 - 1 Asia 9 3 12 Europe 6 26 32 Nort Centrahand l America - 1 1 South America 1 - 1 International Organizations - 1 1 TOTAL 1 7 3 1 4 8 Director d Lectureran s s 17 Participants 31 Member states represented 23 International Organizations represented 1 Applications received 48 20 Title: 25TH ANNIVERSARY CONFERENCE ON "FRONTIERS IN PHYSICS, HIGH TECHNOLOGY AND MATHEMATICS" Dates: 31 October - 3 November 1989. Organizers: Professor . L Bertocchs i (ICTP) . CerdeirH , a (Brazil/ICTP) . DalafH , i (Iran/ICTP) . A.MDr , . Harnende (ICTP), Prof . LundqvisS . t (Chalmers Universit f Technologyo y , Göteborg, Sweden) and Ms. E. Vidiz (ICTP). Purpose: To celebrate the 25th anniversary of the ICTP. Lectures: Supercomputin - gpowerfu l r tooscientififo l c discover d industriaan y l competitiveness. The earth as viewed from space. A life of physics. Spin glass theory. Adhesion and fracture. Topics of the calculus of variations. From chaos to turbulence in thermal convection. Minimal surface d surfacean s f constano s t mean curvature. First clas d seconan s d class difficultie quantun i s m mechanics. Quantum phase anglesd san . Fractional quantum numbers in condensed matter physics. Tracing the mechanism of electroweak symmetry breaking. The emergence of structure in the universe and the dark matter problem. The relation between physic d mathematicsan s . Scienc n higi e h technology. Band structure engineerin f noveo g l semiconductors: from quantum mechanic electronice th o t s d photonic an se 21s th f to scentury . Neutrinos: unique prob f stellao e r interiors. Proteins-paradigm f compleo s x systems. Whas i t really goinhign i n hgo temperature superconductors? Summarized data on the participation (Numbe f scientisto r y worlb s d regions) World regions Developing Industrialized TOTAL Africa 8 - 8 Asia 21 - 21 Europe 1 66 67 Indonesi Oceanid aan a - 1 1 Nort Centrad han l America 2 19 21 South America 8 - 8 International Organizations - 12 12 TOTAL 4 0 9 8 1 38 Director d Lectureran s s 34 Participants 68 Member states represented 35 International Organizations represented 6 Applications received 206 21 CONDENSED MATTER PHYSICS Title: RESEARCH IN CONDENSED MATTER PHYSICS Dates: Throughou yeare th t . Organizers: Professors S. Lundqvist (Chalmers University of Technology, Göteborg, Sweden), Yu Lu (Academia Sinica, Beijing, P.R. China, and ICTP), M. Tosi (University of Trieste d ICTPan , Italy) . TosattE , i (International Schoo r Advancefo l d Studies, ISAS-SISSA d ICTPan , , Trieste, Italy) and H. Cerdeira (Universidad Estadual de Campinas, UNICAMP, Campinas, Brazil). Purpose carro t T researc: ou yhighese th t ha t possible leve condensen i l d matter physics o stimulatt d an e scientific interaction between physicists fro e developinmth g worl d froan dm industrialized countries. Seminars: Simulatio e liquid-gath f o n s transition .with finite size effects. Electronic properties of Cu-O bonds in high temperature superconductors. Applications of the Brillouin- Wigner-Feenberg perturbation theore studth f elementaro yn i y y excitatioHe 4 e Si(110n i n. Th ) surface: electronic structure and electrophysical data. Superconducting fluctuations in tunnel and Josephson junctions. Anomalous scaling in growth kinetic. Is 3He a standard Fermi liquid? Microscopic quantum phenomena in superconductivity Josephson rings. Electronic properties of high Tc superconductors. Deterministic basis for Bose-Einstein statistic. A molecular theory of phase transformations. Beyon e paith dr distribution functio n X-rai n y absorption spectrf o a amorphous systems. Dynamics of one hole in the t-J model. Binding of holes in the Hubbard model. Cooperative Jahn-Teller effec n i transitiot n metal compounds e HamiltoniaTh r . fo y wa n computing Hamiltonian dynamics e Landau-GinzburTh . g e fractionatheorth f o y l quantum Hall effect. Theoretical equations of state for classical fluids. Quantum tunneling in a metal and heavy electron problem. Debye-Waller factors and physical properties of materials. The effects of charge fluctuations on T in oxide superconductors. New trends in spectroscopy for surfaces and thin films. Scaling aspectc f electroo s n localizatio n quasiperiodii n c potentials. Staticd an s dynamics of solitions in one-dimensional medium with microinhomogeneities. Polaron theory of strong coupling superconductivity. Parity violatio d superconductivitan n n i dopey d Mott insulators. Symmetry of electronic states in antiferromagnetic CuOa planes. Anisotropy of n layerei energ p ga yd superconductors e restrictionth e n dielectrith O . n d magnetio s an c c susceptibilities. Far-infrared vibrational spectru f disorderemo d polymer d phonoan s n densitf o y states. Recombination enhanced defect reaction and diffusion in semiconductors. Summarized data on the participation (Numbe f scientisto r y worlb s d regions) World regions Developing Industrialized TOTAL Africa 16 - 16 Asia 33 - 33 Europe 5 20 25 Nort Centrad han l America 2 3 5 South America 6 - 6 TOTAL 62 23 85 22 Title: FOURTH INTERNATIONAL WORKSHOP ON COMPUTATIONAL CONDENSED MATTER PHYSICS: "TOTAL ENERGY AND FORCE METHODS" Dates: 4 - 6 January 1989. Organizers: Professor . BaldereschA s i (Universit f Triesteo y , Italyd Ecolan , e Polytechnique Fédérale, Lausanne, Switzerland), A.J. Williams (IBM, Yorktown Heights, USA), . ScheffleM r (Fritz-Haber-Institu r Max-Planck-Gesellschaftde t , Berlin, F.R. Germany. W d an ) Andreoni-Kay (IBM, Zürich, Switzerland), with the co-sponsorship of the International School for Advanced Studies (ISAS-SISSA, Trieste, Italy) e Departmenth , f Theoreticao t l Physicf o s Universite th Italiaf e Triesteo yth d n an Nationa, l Research Council (CNR, Rome, Italy). Purpose: To review and discuss recent theoretical developments as well as interesting and illustrative applications. Programme: Topics: Quantum Monte Carlo. Effective-medium theory. Molecular dynamics. Combined use of local-density theory and the Anderson Hamiltonian. Localized orbital d first-principlean s s tight-binding theory. Alternative o Hamiltoniat s n diagonalization. Lectures: Density functional calculatio e parameterth f o e nAnderso th n i s n impurity model. Calculations of electronic energies and interactions in CuO materials. Variational quantum Monte Carlo calculation of materials properties. Ab-initio correlation calculations for different solids witlocae hth l Ansatz. Recent progres pseudo-Hamiltoniann i s r quantufo s m Monte Carlo. e metal-insulatoTh r transitio n density-functionai n l theor d quasiparticlan y e theory e selfTh .- energy approach for calculations of quasiparticle energies. Methods for ab-initio simulation. First-principles molecular dynamics of amorphous and liquid carbon. Hydrogen diffusion in semiconductors. Energy surface structurd an s f grouo e I elementapV d compounan l d clusters. Atomi d electronian c c structur f planao e r defects; semi-empirica d first-principlean l s thight- binding methods. Full-potential LMTO; lattice dynamics of copper halides and perovskites. New LMTO techniques; accurate results for phase stabilities, phonon frequencies, and Grüneisen parameters. Dipoles and Schottky barrier heights of (111) NiSi2/Si interfaces. The effective medium w theoryclassicane A . l potentia r accuratfo l e total-energy calculation f atomio s c processes in Si. Linear response in real materials: why is it useful? Why is it convenient? Non- adiabatic effect n moleculai s r dynamics (classica d quantum)an l . Studie f spid orbitao s an n l magnetis n bandsmi . Relativistic quantum mechanic condensen i s d matter physics. Ferrod an - antiferro-magnetism of 3d-overlayers on metals. Self-consistent antiferromagnetic ground state for La2CuO4 via energy and theory. Drugs from ab-initio calculations. An iterative scheme for obtaining Eigenvectors of large real-symmetric matrices. Fast diagonalization of non-local pseudopotential Hamiltonians. A new formulation for ab-initio calculation of phonon spectra. Surface atom energetics. Defect metastability: the EL2 defect in GaAs. Summarized data on the participation (Number of scientists by world regions) World regions Developing Industrialized TOTAL Africa 2 - 2 Asia 5 - 5 Europe 9 84 93 North and Central America 1 13 14 South America 3 - 3 International Organizations - 1 1 TOTAL 20 9 8 1 1 8 23 Directors and Lecturers 38 Participants 80 Member states represented 25 International Organizations represented 1 Applications received 138 Title: COLLEG ATOMIN EO MOLECULAD CAN R PHYSICS: PHOTON ASSISTED COLLISIONSN I ATOM MOLECULED SAN S Dates: 30 January - 24 February 1989. Organizers: Professors B. Bederson (New York University, USA), K.L. Kompa (Max- Planck-lnstitut, Munich, Federal Republic of Germany) and N. Rahman (University of Trieste, Italy), wite co-sponsorshith h e Italiath f o np Direzione General a Cooperazionl r pe e e allo Sviluppo (Ministr r Foreigfo y n Affairs, Rome, Italy). Purpose o offeT : a generar d updatean l d e widrevieth ef wo variet f physicao y l phenomena occurring in processes of atomic and molecular collisions in the presence of laser light. Programme: Topics: Electron collisions in laser fields. Non-reactive collisions. Reactive collisions. Collision induced coherence. State-to-state chemistry. Harmonic generation in gases. Lectures: Electron-atom collisions. Interatomic potentials and collisions with molecular beams. Molecular interactions from scattering experiments. High resolution laser spectroscopy. Electron-atom collisions witd withouan h t fields. Photochemistry. Rydberg atoms with matter radiation. Atomic physics with synchrotron and laser. Reaction dynamics with laser. Gas phase reactions with lasers. Energy pooling reaction. Theor experimentd an y f electroo s n collisionn i s laser fields. Collision-induced coherence. Molecules in laser fields. Experimental aspects of L.I.C.E.T. Molecular dynamics. Simulated recombinatio a stochasti s a n c process. Cathodoluminescence in biology and medicine. Bond formation at ultracold temperature. Laser- control of chemical reactions. Summarize e participatiodth datn o a n (Numbe f scientisto r y worlb s d regions) World regions Developing Industrialized TOTAL Africa 13 - 13 Asia 35 - 35 Europe 6 16 22 Indonesi Oceanid aan a 1 - 1 North and Central America 1 8 9 South America 6 - 6 TOTAL 62 24 8 6 24 Director d Lectureran s s 23 Participants 63 Member states represented 35 Applications received 208 Title: EXPERIMENTAL WORKSHO HIGN PO H TEMPERATURE SUPERCONDUCTORS Dates 0 Marc 3 Apri4 : 1 h- l 1989. Organizers: Dr. P. Ganguly (Indian Institute of Science, Bangalore, India), Dr. G. Leising (Graz Technical University, Graz, Austria), Dr. F.C. Matacotta (Istituto per la Tecnologia dei Material! Metallic! non Tradizionali, ITM - Consiglio Nazionale delle Ricerche, Milan, Italy) and Prof. M. Tosi (University of Trieste, Italy), with the co-sponsorship of the Italian Direzione Generate per la Cooperazione allo Sviluppo (Ministry of Foreign Affairs, Rome, Italy). Purpose: To introduce interested newcomers to the latest developments in the field. Lectures: Phenomenolog d theoran y f superconductivityo y . Introductio o experimentat n l activity: materials preparation; materials characterization. Theoretical developments in HTC superconductivity. Structure investigations. High temperature superconductivity. Computer aided structural determinations. HTS chemistry. Infrared spectroscopy. Magnetic and transport properties. Devices and thin films. Thermodynamic properties. Critical current densities of high T superconductors. Neutron diffraction of YBCO-related compounds. Oxygen disordering c phenomen YBan ai 2Cu specifi3e Oth 7 ±5n O c. heat anomalie temperature th n si e range 200-24n i 0K CuO and YBa2Cu3O7. Y-Ba-Cu-O high Tc superconductive thin films made by Y, BaF2, Cu co- evaporation technique. Selective doping of iron in YBCO: a Mössbauer study. Magnetic properties of Cu-O planes in Gd2CuO4. Synthesis of Bi-Pb-Sr-Ca-O system through glass ceramic and ceramic routes. Transport properties of REBa2Cu3O7_x superconductors versus oxygen content (resistivit d thermoelectrian y c power; thermal conductivity). Researc d developmenan h f higo t h c superconductorT n Thailandi s : national project; research activit t Chiangmaa y i University; research activit t Princa y f Songklo e a University. Critical curren f epitaxiao t l YBa2Cu3O7_x; thin films under high magnetic field. A possibility for obtaining YBa2Cu3O7.x superconductors of large distributiod an rang x e oxyge f th eo f no n basae atomth n l o splane . Hall effec 205d R an TtNM I Knight shift studies in BiSrCaCu2Ox and TICa3BaCu3Ox systems. Sr and O concentration effects on the electrical resistivit f Ba-Sr-Cu-Oo y . Logarithmi o non-logarithmit c c flux creep transition i n Bi-Sr-Ca-Cu-O system. Infrare d X-raan d y studie n Y-Ba-Cu-o s d Bi-Sr-Ca-Cu-Oan O system. Substitutio d transporan n t studie n i 1-2-s 3 compounds e effec Th f .combinino td an b N g YBa2Cu 3a O7_superconductin n i 5 g wire. Relaxation e magnetizatioth f o s n i high-Tn c superconductors. Point-contact spectroscopy: technique d resultsan s . Optical reflectivity studies of magnetically-oriented high Tc materials. Superconductivity at 156K in the multiphase La-Sr- Cu-O system. Summarized data on the participation (Number of scientists by world regions) World regions Developing Industrialized TOTAL Africa 10 . 10 Asia 35 . 35 Europe 13 17 30 Nort Centrad an h l America 4 2 6 South America 15 - 15 TOTAL 7 7 1 9 9 6 25 Directors and Lecturers 30 Participants 66 Member states represented 37 Applications received 319 Title: SPRING COLLEGE IN MATERIALS SCIENCE ON "CERAMICS AND COMPOSITE MATERIALS" y 1989DatesMa Apri7 6 .1 2 : - l Organizers: Professor N.H. March (University of Oxford, UK), Chairman of the Advisory Committee on Condensed Matter Physics, and the Members of the Committee, Professors P.N. Butcher (Warwick University, UK) . ChiarottG , I Universit(I i i Romaéd , Rome, Italy) . FuldP , e (Max-Planck-lnstitu r Festkörperforschungfü t , Stuttgart, Federal Republi f Germany)o c . F , Garcîa-Moliner (Institut e Ciencid o e Materialesad , Madrid, Spain) . GautieF , r (Université Louis Pasteur, Strasbourg, France), I.M. Khalatnikov (Landau Institut r Theoreticafo e l Physics, Moscow, USSR) . LundqvisS , t (Chalmers Universit f Technologyo y , Göteborg, Sweden), C.-W. Lung (Institute of Metal Research, Shenyang, P.R.China), K. Singwi (Northwestern University, Evanston, USA) and M.P. Tosi (University of Trieste, Italy). Purpose o stud T e :basi th y c physic f structuro s d microstructurean e e analyticath , l techniques used for their study and the relevance to electrical, mechanical and related properties of technological importance. Programme: Topics: Basic theory. Physical techniques. Special topics and applications. Lectures: Chemical bonding. Structure determination. Plasticity and fracture. Electron microscopy (transmission, scanning, Auger). Defects, disorder and diffusion. Electrical and thermal conduction. Deformation and creep. Sintering and microstructures. Applications of advanced ceramic materials. Theoretical developments on high temperature superconductors. Wetting. Optical properties of materials. High toughness and high temperature ceramics. Porous media. Phase diagram d liquian s d structure. Simulatio f performanco n n homogeneouno f o e s materials. Positron annhilation. The mechanical performance of a SiC fibres reinforced matrix composites. Processing of ceramics and composite materials. Fast ion conductors. Strengthening mechanisms and strong microstructures. Microstructure design. A strong-coupling mechanism in the high-Tc copper oxides. Solid ionic ceramic conductors and their applications. Li-insertion compounds. Structural propertie f oxido s e superconductors. Radiation damag f ceramicso e . Present applications and future trends of ceramics and composites. Fibre strengthening of ceramic glassesd an s . Ceramic coating. Quasicrystals. Working Group Seminars: Silicate-bonded ceramic lateritiof s c coils. Conductivitand y dielectric properties of composite materials. Field ion microscopy in the study of topography. Demixing in doped transition metal oxides. Fast ion conducting materials - application to solid state ionic devices. Dielectri d opticaan c l properties e percolatioclosth o t e n threshol thin i d n films. Piezoelectric properties of polymer-ceramic composites. Sensitive nondestructive methods for dynamic defects characterization. A numerical calculation for the enhancement facto X-ran i r y fluorescence spectroscopy methoT ND .r elastidfo c modulus. Processe f glasso s - ceramics formatio modea n ni l metaphosphate glass: NaPO3. Molecula dynamid an r c studiee th n so liquid-glass transition. Experimental methods for the determination of KIC and slow crack growth parameters. Developmen f materiao t l resistan o radiatiot t n damag y fasb e t neutrons. Bio- ceramics. Preparatio f silicono n nitride ceramics-mechanisms. Glass structur y Mössbaueeb d an r IR spectroscopy. Sulphate based solid electrolytes. Electron spin resonanc hign i e h temperature 26 superconductors. Mechanic f deformeso d solids. Preparatio propertied nan t presseho f so d higc hT superconducting ceramics. Microstructure of high Tc superconducting ceramics. Glass forming abilit n metallii y c alloys. Effec f heterogeneito t e chemicath n d o mechanicay an l l propertief o s glasses. Fracture characteristic f threo s e dimensional carbon-carbon composites modeA . r fo l transformation toughening in ZrO2 alloys. Mechanical properties of high polymers: Time- temperature superposition. Heat resistant polymers criticaOn . l current superconductorsin s . Ferroelectric propertie f Bao s 4Na2NbioO3 doped with rare earth metallic ions. Microstructurf eo AI-SiO2-AI2O3 composites obtaine y liquib d d phase reactive sintering. Pencil lead tipr fo s scanning tunneling microscop field dan fiela emission d- yio n microscopic study. Developmenf o t sulphate base othed dan r solid electrolyte material r solifo s d state batteries. Thick film f higo s h temperature superconductors. Fabricatio f thio n n film f o higs T h superconductors. c Thermodynamic properties of point defects in solids. Finite size effects in high Tc superconductors formae Th . l theor f nucleatioo y s applicationsgrowtd it nan d han . Electricad an l optical properties of glasses. Application of fracture mechanics to brittle materials. Hertzian fractur n ceramii e c single crystals. Microstructur d propertiean e s relation n ferroelectricsi s . Materials technology researc t IGCARa h , Kalpakkam (DAE), India. Effec f faso t t neutron irradiatio e phasth n eo n transitio e A'A"BXth f o n 4 family. Preparatio f Si o nd relate3Nan 4 d materials. Steel surface coatin y nitridingb g . Superionic conductio somn i n e protonic materials. Physical properties of LISICON ceramic sample. Transport properties of YBaCuO granular and single crystal epitaxial filmsstudie D superconductine th XR .f so g SmBa2Cu3O7.s phase. Effectf o s He absorption in BiSrCaCuO superconductors. Research in high T materials at the Centre for Spac n Argentinai e . Surface segregatio n alloysi n . Improvemen f Iraq'o t s building ceramicc y b s sulphur impregnation. S.G. iron productio t furnacepi n ni . Structur propertied ean f 'non-lineao s r optics' (NLO) materials. Some comments on the YBa2Cu3O7 systems. Absorption on heterogeneous surfaces. Diffusio f gaseo n n i polymes r films. Plastic instabilit n i metalliy c tubes under multiaxial stress conditions. Surface fracture toughness for ceramics. Summarize e participatiod th datn o a n (Number of scientists by world regions) World regions Developing Industrialized TOTAL Africa 28 - 28 Asia 54 - 54 Europe 8 25 33 North and Central America 4 3 7 South America 16 - 16 TOTAL 1 1 0 2 8 1 38 Directors and Lecturers 28 Participants 110 Member states represented 45 Applications received 305 Title: CONFERENC OXYGEN EO N DISORDER EFFECT HIGSN I c SUPERCONDUCTORHT S 1 ApriDates2 - l 8 19891 : . Organizers: Professors J.L Moran-Lopez (Universidad Autonoma de San Luis Potosî, Mexico d I.Kan ). Schuller (Universit f Californiao y Diegon Sa , , USA). Purpose: To exchange ideas and to discuss the latest achievements in the field. 27 Programme: Topics: Electron diffraction microscopy. Raman scattering. Neutron diffraction. Substitutio dopind nan g effects. Electronic structure. Phase diagrams. Phonon spectra. Statistical models. Magnetic properties. Lectures: Neutron diffraction studies of the role of oxygen in oxide high-temperature superconductors. Oxygen orderin n YBai g 2Cu3O6+8 a phas: e diagram calculation. Neutron diffraction studies of oxygen ordering in high Tc compounds. Ordering of oxygen vacancies in YBaCuO. Electron microscopy and electron diffraction of short- and long-range order in YBa2Cu3O7+8. Pseudo-binary phase equilibriu m1-2-n i 3 superconductors. Pulsed neutron studies of oxygen displacements. Oxygen kinetic hign i s c ceramicshT . Current-voltage characteristicf o s hig c superconductorshT . Hig c superconductinhT g oxide thin films. Configurational disorded an r correlation effect on the electronic structure of YBaCuO65- Tight-binding investigation the 3 + electronic properties of ordered and disordered defect2 s in the YBaCuO system. Electronic structur f cuprato e d bismuthatan e e superconductors. Catio d coppenan r substitution studief o s high Tc cuprate superconductors. Study of superconducting and parent phases by chemical substitutions. Oxygen disorder effects in YBa(Cui.M)O_. Intrinsic superconducting 2 x x 3 7 y propertie f higso c materialhT s obtained through magnetization measurements. Characterization of twin twid an sn domain f YBaCuso O single crystal micro-Ramay sb n scattering effece e F Th .f o t substituants on the Cu superconductor oxides. Neutron diffraction evidence for oxygen-pairing in Bi-Ca-Sr-Cu-O superconductors . e oxidth Oxyge r e fo superconducto nc T effec n o t r YBa2Cu3Ox(6.3 La2CuO4+y superconductors. Dynamics of holes in Heisenberg antiferromagnets. Summarize e participatiod th datn o a n (Number of scientists by world regions) World regions Developing Industrialized TOTAL Africa 3 - 3 Asia 16 1 17 Europe 12 16 28 Nort Centrad han l America 2 1 1 13 South America 14 - 14 TOTAL 4 7 28 7 5 Director d Lectureran s s 22 Participants 53 Member states represented 30 Applications received 88 28 Title: WORKING PARTY ON MODELLING THERMOMECHANICAL BEHAVIOUR OF MATERIALS Jun6 1 - e y 1989DatesMa 9 . 2 : Organizer: Professor E.J. Savino (Comisiôn Nacional de Energîa Atômica, Buenos Aires, Argentina). Purpose o modeT : l thermomechanical material behaviou n technologicalli r y relevant environments by means of numerical codes specially developed for this purpose. Lectures: Introduction. Modelling plastic behaviour of polycrystalline metals. Description of the facilities available. Introduction to thermoelasticity. Introduction to finite element methods. Use of a finite element programme (SAP4). Demonstration from Convex and use of programmes as scheduled. Continuum and lattice models for composite materials. Plastic behaviou f anisotropio r c polycrystals. Informatics laboratory: Green's function; LAPP; QUEST; G.F.; dislocation mode r thermafo l irradiatiod an l n creep; comparison between finite elementd san finite difference method r modellinfo s g thermomechanical properties; nuclear fuel modelling; implici d explician t t method r modellinfo s g creep deformation. Elastoplastic behaviouf o r polycrystals. Rate theor f pointo y defects. Deformatio d failuran n e mode r structurafo s l mechanics analysis. Nuclear fuel modelling. Fundamentals of fracture mechanics. Summary and conclusive remarks. Summarized data on the participation (Number of scientists by world regions) World regions Developing Industrialized TOTAL Africa 8 - 8 Asia 10 - 10 Europe - 2 2 Nort Centrad han l America - 2 2 South America 8 - 8 TOTAL 2 6 4 30 Directors and Lecturers 6 Participants 24 Member states represented 17 Applications received 30 Title: WORKING PART FRACTURN YO E PHYSICS Jun6 1 e- y 1989DatesMa 9 . 2 : Organizers: Professor C.W. Lung (Institute of Metal Research, Academia Sinica, Shenyang, People's Republic of China) and Dr. R. Thomson (National Bureau of Standards, Gaithersburg, MD, USA). Purpose o hav T :n overvie a e f fracturwo e physic groua y f b sleadino p g experta n o s numbe f curreno r t basic issues underlyin phenomene gth f fractureao . 29 Programme: Topics: Structure of the crack tip and its stability against dislocation emission. Relative efficienc e shieldin th e crac th f y o b yf k o g dislocations formed from the tip itself and those from external sources. Reaction between external chemical species and the stretched bonds and incipient surface forming at the crack tip. Strengt f interfaceso h , either intergranula r interphaseo r . Lectures: Introduction. Elasticit plasticityd an y . Dislocations. Simulated annealing. Green functions. Statistical fracture mechanics. From dislocation dynamic o self-organizest d behaviour of dislocations. Different fractal structures along different directions on the fractured surface. Fractal dimension of H-cracking surface of metals. Tight binding approaches to defect structures. Simulatio f crackso n . Dislocation shielding. Molecular dynamical stud f deformatioo y d an n fracture for Cu bicrystals. Lattice models. Electron microscopy of crack. Observations of dislocation shielding. Cracks and fracture in silicon. Interfacial segregation. Dislocation dynamics ane brittle-ductilth d e transition. Elastic theor f dynamio y c cracks. Observatio f dislocationo n free zone t craca s k tips. Transformation toughening. Environmental effect metalsn i s . Fracturn ei ceramics. Fracture and deformation in brittle and geologic materials. Cleavage crack tip deformation in Zn single crystal. Fatigue behaviour of SiC(P)/AI(6061) composite. Theory of chemical effects at cracks. Surface fracture of perspex as a fractal growth process. Summarized data on the participation (Number of scientists by world regions) World regions Developing Industrialized TOTAL Africa 5 . 5 Asia 17 - 17 Europe 2 7 9 North and Central America - 6 6 South America 2 - 2 TOTAL 2 6 1 3 39 Director d Lectureran s s 17 Participants 22 Member states represented 20 Applications received 53 Title: MINIWORKSHOP ON STRONGLY CORRELATED ELECTRON SYSTEMS IN CONDENSED MATTER Dates: 19 June - 21 July 1989. Organizers: Professor . BaskaraG s n (Indian Institut f Mathematicaeo l Sciences, Madras, India), A.E. Ruckenstein (University of California, La Jolla, USA), E. Tosatti (International School for Advanced Studies, ISAS-SISSA, and ICTP, Trieste, Italy) and Yu Lu (P.R. China/ICTP), with e co-sponsorshith e Internationath f o p l Schoo r Advancefo l d Studies (ISAS-SISSA, Trieste, Italy). Purpose: To bring to the ICTP a small but meaningful fraction of condensed matter theorists, actively involved in the research on strongly correlated electron systems, in order to explore new ideas and techniques. 30 Lectures: Introduction to metal-insulator transition and the strong correlation problem. Some results in fermion mean field theories of the large U Hubbard model. Itinerant vs. localized Af CuOFo 2 layers withi slavna e boson approach. Gauge theor f dimeyo r phase with holes. Kondo effect saga : f stronglao y interacting fermions. Instabilit ferromagnetie th f o y c e largstatth en ei Ue Hubbar th limi f o t d model. Novel local symmetrie d chiraan s l symmetry broken phases. Variational study of the pair hopping model. Exact diagonalization studies of small correlated systems quantuo Tw . m liquids. Quantum spin system flud xsan phase r pedestrianssfo . Summarize e participatiod th datn o a n (Number of scientists by world regions) World regions Developing Industrialized TOTAL Africa 1 - 1 Asia 1 1 2 13 Europe 10 29 39 North and Central America 1 14 15 International Organizations - 1 1 TOTAL 23 4 6 69 Director d Lectureran s s 4 Participants 65 Member states represented 22 International Organizations represented 1 Applications received 77 Title: RESEARCH WORKSHOP IN CONDENSED MATTER, ATOMIC AND MOLECULAR PHYSICS Dates Jun9 Septembe9 1 2 : e- r 1989. Organizers: Professors P.N. Butcher (University of Warwick, UK), H. Cerdeira (Universidade Estadua e Campinasd l , Brazil d ICTPan , , Trieste, Italy) . Garcia-MolineF , r (Institut e Cienciad e s Materiales, Madrid, Spain), I.M. Khalatnikov (Landau Institutr fo e Theoretical Physics, Moscow, USSR), S. Lundqvist (Chalmers University of Technology, Göteborg, Sweden) i LunWe g i (InstitutCh , f Metaeo l Research, Academia Sinica, Shenyang, P.R. China), N.H. March (University of Oxford, UK), K.S. Singwi (Northwestern University, Evanston, USA), E. Tosatti (International School for Advanced Studies, ISAS-SISSA, and ICTP, Trieste, Italy), M.P. Tosi (Universit f Triesto y d ICTPan e , Trieste u (AcademiL u ,Y Italyd aan ) Sinica, Beijing, P.R. China, and ICTP, Trieste, Italy). Purpose o supporT : t condensed matter researc n developini h g countrie y invitinb s a g selected group of physicists from these countries for an extended summer programme, during which they have the opportunity of interacting with a large number of leading physicists from all ovee worldth r . Lectures: Solution of the phase problem in diffraction by multiple Bragg scattering. Self- generating oscillations in non linear waves with dispersion. Physics of immunology. Theoretical concepts for fractal growth. What is chaos - a colloquium for non-chaologists. Chaotic soliton in science and engineering. Quasicrystals. Hopping transport and localization in high electric fields. Quantum simulations: an overview. Antiferromagnetic resonance in triangular antiferromagnets. Self-organized behaviour of dislocations. The functional integral method in the problem of the 31 lifetim a metastabl f o e e state. Nonlinear lattice statics, dynamic d statisticaan s l mechanics. Multifractal wave function n one-dimensionai s l systems. Chemical aspect f high-temperaturo s e superconductors. Dampin f collectivo g e excitation othed n normai san r e fermioH 3 l n liquidse Th . Cottrell-Stoke d activatioan w la sn theory. Introductio e interactioth o t n f buld surfaco n an k e modes in liquids. Electronic phase transitions in semiconductors with strong electron-phonon interaction. Electro phonod nan n structure Ramad san n effec multipln i t e quantum wells. Pressure induced superconductivit n elementai y l solids. Phonon-drag thermopowe n low-dimensionai r l semiconductor systems. Light induced magnetisatio semiconductorsn ni . Magnetis higd c man hT superconductivity: new perspectives. Static and dynamic properties of clouds of virtual quanta. Frustration and correlations in Ising systems. Wetting transitions. Theory of elementary excitations with dampin n systemi g s with strong correlation d complean s x spectrum. Self- avoiding walks (SAWs) and self-avoiding trails (SATs) on fractal lattices. Relaxed structure and structural phase transition in crystals with surfaces - a microscopic model. Developments in the theor f multiphotoo y n absorptio y moleculenb s (bound-bound); application chiropticaa f so l nature. High temperature superconductors: facts and fantasies. Inverse problem for obtaining phonon density of states. Cooling, bunching, velocity effects and localization of atoms in a light field. Dislocation theory of elastic twinning and related topics. Diabatic and adiabatic motion in periodically driven quantum systems. Quantum distinction between regular and chaotic, dissipativ r frefo e e D particlemotionQE t Ho s. made easy. Rydberg atom quantud an s m optics. Phase transitio n aperiodii n c quantum spin chains. Lattice defecte simplesth n i s t metals: progress in the study of Li and Na. Algebraic analysis of dynamical models in condensed matter physics. Quantum ballistics in two-dimensions. Solution of some problems of electron kinetics beyond the relaxation time approximation. Atomic source field effects and the action of passive system quantun i s m optics. Recent progres Fermn si i liquid approache higo st . c InfluenchT a f eo magnetic fiel quasi-one-dimensionan do l electron systems. Some arguments agains e validitth t y of Boltzmann's equatio narron ni p II-IwVga semiconductors. Non-adiabatic effectelectroe th n i s n and phonon spectr Peierla f ao s insulator localisatioe Th . n lengt f electronho onen si quasid an - - one-dimensional systems. Physical modellin f electrochemicao g l interfaces n introductioA . o t n fractal objects. Surface first order transition in a Heisenberg ferromagnet with competing interactions. Resonatorless, dissipative optical bistability in semiconductors. Magnetoconductance in quasi-periodic superlattices. Effect of rotational constraint on lattice models. Electron coolin stronn gi g electric fields. Dynamic drivea f damped o s nan D 1 d a kin n i k chain. The thermopower in crystalline and amorphous semiconductors: energy transport and the role of the electron-phonon interaction. DC and ac phonon-assisted hopping conductivity calculated from generalized master equations. Gauge theory of line defects in elastic continua and liquid crystals. Review of doping superlattices. Diffusion and thermal equilibrium defects in Si and Ge. Metal-enhanced crystallizatio d fractaan n l formation. Mathematical structural equivalencf o e TDLDA and RPAE in the calculation of atomic photoabsorption cross sections. Void lattice formation under particle irradiatio phenomenoa n- f self-organizationo n . Hopping transporn o t deterministic aperiodic chains. Electronic properties of 2D quasicrystals. An experimental study on microstructur d annealinan e g behaviou f rapidlo r y quenched Al-Si alloys. Three-photon interband processe n solidsi s t electroHo . n propertie n GaAs/AIGaAi s s heterojunction prepared by LPE. Bimetallic interfaces. Hard-core Yukawa fluid - some new results. Dynamical effects in electron tunneling. Development and characterization of device grade thin films of semiconductors. Vibrational spectr f quasicrystallino a e superlattices. Surfac d interfacan e e electronic structure of alkali halide crystals (LCAO slab calculations). Dislocation representation of a wall of elastic domains. Random site-bond percolation: application to high Tc superconductors. Experimental and theoretical study of Ge/Pd/n-GaAs and Si/Pd/n-GaAs Ohmic contacts. Simulation studie f low-dimensionao s l classical spin systems with long-range interactions. Computer modellin f coherencgo e effectexcitatioe th n i s n transfe n photosynthetii r c units. Semiconductor epitaxial layers characterizatio y persistenb n t photoconductivity measurements. Swendsen-Wang algorith d criticaman l behaviou e dilutth f eo r Ising model. Diagram techniqu r non-orthogonaefo l group functions. Self-interactio n Hopfielni d model. 32 Summarize e participatiod th datn o a n (Number of scientists by world regions) World regions Developing Industrialized TOTAL Africa 56 - 56 Asia 111 - 111 Europe 63 44 107 Nort Centrad han l America 5 8 13 South America 22 - 22 International Organizations - 1 1 TOTAL 257 53 31 0 Directors and Lecturers 56 Participants 254 Member states represented 54 International Organizations represented 1 Applications received 646 Title: INTERNATIONAL SYMPOSIU HIGHLIGHTN MO CONDENSEN SI D MATTER PHYSICS (dedicated o Proft . K.S. e occasioSingw th s 70t hi n o hf i o nbirthda n recognitioi y s hi f o n extensiv pioneerind ean gfield)e worth n i k. Dates Augus3 - 1 : t 1989. Organizers: Professor . YenP s a (Virginia Commonwealth University, Richmond, . USA)R , Kalia (Argonne National Laboratory, Argonne, USA), M.P. Tosi (University of Trieste and ICTP, . VashishtP Italyd an ) a (Argonne National Laboratory, Argonne, USA). Purpose: To review and discuss recent progress and future prospects. Programme: Topics: Strongly correlated Fermi systems. Helium liquids. Structure and dynamics of disordered systems. Density functional theory. Lectures: Local field effects in weakly to strongly interacting Fermi systems. Applicability of the local field concept for the electron gas. Dynamic susceptibility of a free dimensionD electro n i s analyti it s d nga an sc properties. Hubbard correction electroD 2- a nn i s gasnoveA . l approac correlatioo ht n effect electron i s n spectroscopies dynamin O . c correlations in uniform electron liquid. The puzzling neutrinos. Dynamics of classical and quantum liquids from neutron scattering experiments. Relaxation n supercoolei s d Lennard-Jones systems. Dynamical correlation functio d transporan n t coefficient f denso s e fluids e structurTh . d dynamican e f o s intercalated ternary systems. Interatomic potential energy. Electron correlation d dielectrian s c screening in a layered electron gas. Impurity problem in metals. Polaron gas in low dimensional structures colA . de Universe starth o t t ? Density functional theor f superconductorso y . Ground- state energy of the one-and two-component Hubbard model calculated by the method of Singwi, Tosi, Land and Sjölander. Superconducting correlations in the new high Tc superconductors from a study of dynamic response function. Hydrogen in metals. Density wave theory of Wigner crystallization. Electron-hole liquid many-bodd an s y theories. 33 Summarize e dparticipatio th dat n o a n (Number of scientists by world regions) World regions Developing Industrialized TOTAL Asia 4 - 4 Europe 2 10 12 Indonesia and Oceania - 1 1 Nort Centrad han l America - 10 10 South America 1 - 1 TOTAL 7 21 28 Director d Lectureran s s 26 Participants 2 Member states represented 13 Applications received 32 Title: ADRIATICO WORKING PART CONDENSEN YO D MATTER PROPERTIE NEUTROF SO N STARS Dates: 11-29 September 1989. Organizers: Professors H.A. Cerdeira (Universidad Estadua e Campinasd l , UNICAMP, Campinas, Brazil d ICTPan , , Trieste . Srinivasa,G Italyd an ) n (Raman Research Institute, Bangalore, India). Purpose: To bring together a small number of astrophysicists and condensed matter physicists to discuss the structure and properties of the interior of neutron stars. Lectures: What are the stars? The nature of pulsars. Theory of superconductivity. Equatio f stato n f neutroo e n star matter. Superfluidit d superconductivitan y n neutroi y n stars. Neutron star crust and cooling. The structure of flux tubes in neutron stars. Vortex pinning, post-glitch relaxation and crystal heating. The role of the magnetic fields of neutron stars - an overview pulsao D . r magnetic fields decay evolutioe ?Th e magneti th f no c fiel f pulsarsdo e Th . dynamic f vorteo s e decaxth f linepulsao d y an s r magnetic fields. Electrical resistivitf o y magnetized cores of neutron stars. Ohmic decay of the core field. Equation of state - the moral of millisecond pulsars. High energy gamma-ray stars. Thermal growt f neutroo h n star magnetic field. Growth of pulsar magnetic fields: observational constraints. Thermal radiation from neutron stars e magneti:th rolf o e c field. Electrical resistivit f neutroo y n star crustA . mechanis e decath f r pulsao ymfo r magneti ce structurfieldsth n O f .neutro o e n star crust. Electrohydrodynamic instability of the surface of neutron stars. Electrodynamics of the polar cap region: some effect f generao s l relativity. Spin-u new-bora f po n neutron star. Summarized data on the participation (Numbe f scientisto r y worlb s d regions) World regions Developing Industrialized TOTAL Asia 6 1 7 Europe 6 9 15 Nort Centrad han l America - 4 4 South America 4 - 4 International Organizations - 1 1 TOTAL 1 6 1 5 3 1 34 Director d Lectureran s s 16 Participants 1 5 Member states represented 1 5 International Organizations represented Applications received 45 35 MATHEMATICS Title: MATHEMATICS RESEARCH Dates: Throughout the year. Organizers: Professors J. Eells (University of Warwick, UK, and ICTP, Trieste, Italy) . VerjovskA d an y (Centr e Investigaciöd e e Estudiod y n s Avanzado l Institutde s o Politécnico Nacional, Mexico City, Mexico d ICTPan , , Trieste, Italy). Purpose: To give continuity to the mathematics research programmes in order to provide Associate Member d visitoran s s from Federated Institutes wite possibilitth h f contaco y t with high-level mathematicians throughou e yearth t . Seminars: Yang-Mills fields and holomorphic maps. Number theory. Multi-tuple Shilov boundaries and multi-dimensional analytic manifolds in uniform algebras. Localizability in analytical dynamic d quantuan s m mechanics. Closed string-like solution f Davey-Stewartsoo s I I n equations. Laplace spectrum, length spectrum and Selberg zeta functions. Solution of linear differential equations and Lefschetz theorem of hyperplane sections. Mean function of compact hypersurfac quasilinead an e r elliptic equation. Homogeneous weakly isoparametric submanifolds. Twistors and singularities of self-dual connections. Chern-Simons invariants and transversally homogeneous foliations. From Lefschetz formula to the De Rham algebra of the classifying space of foliations classificatioE , D , A . f singularities.o n Häfliger classifying e geometrspaceth d an s y of Chern-Simons invariants. Analytic big-manifold n unifori s m algebra spectrao d e . w Wha n ca t with only a rusty compass? Superminimal surfaces in Euclidean spheres. Branched superminimal surfaces in S . Moduli of harmonic maps from S into S . A new class of infinite-dimensional Lie 4 2 4 algebra d associatean s d nonlinear systemse provw n e Ca geometrica. l theorem y onlb s y some examples? Coefficient multiplier f spaceo s f holomorphio s c function e unith . t C n i sbal f o l n Automorphisms of foliations defined by complex linear vector fields. Variations of Hodge structure of maximal dimension. Exotic CR-Structures on S3xS2. Finite subgroups of mapping class and modular groups. On some arithmetical properties of almost periods. The concept of multi-grid methods. Generalized critical point d applicationan s n geometryi s e monaTh . d constructions and Hermitian-Einstein metrics for holomorphic vector bundles. Iterative construction of fixed points for set-valued operators of the monotone type in Banach spaces. Some results in distance geometry. Temperature correlators of impenetrable bosons as a new integrable system. Intersection R-torsion and analytic torsion for pseudomanifolds. Elementary e Goldbillon-Vesurveth n o y y invariant nonclassicaa n O . l boundary parabolic pseudodifferential problem e StokeTh . s syste n polygonamo l plane domains e BergmaTh . ne spaceth d an s pluriharmonic conjugates in the unit ball of C. n Mathematical education and educational mathematics e self-scalinth n O . g variable metric algorithms decompositioA . f C*-algebraso n . Implementation of comparative probability by normal states. On real part of non-trivial zeros of Riemann zeta function. Differential transcendenc f Dirichleo e t series. Multiplicative diophantine equations, orthogonal polynomials and angular momentum coupling coefficients. Recent results on Quaternion-Kähler manifolds. A problem of L. Nirenberg. On semi-symmetric or Einsteinian 4- submanifold . GeometriE n i s c metric equation theid san r applications zeroe th f solutionn so O . f so 6 non-homogeneous third order differential equations. Approximate representation of functions of several variable termn i s f functiono s variablee on f o s . Weighted norm inequalitie certaia r sfo n class of integral operators. Strong shape theory and strong homology. Methods of the stochastic processes theor n pati y h integration. Solutio e Stoketh f o ns syste y boundarmb y integral equations and fixed point iterative schemes. Nonoscillatory behaviour of solutions of an equation alternately of retarded and advanced type. 36 Summarized data on the participation (Numbe f scientisto r y worlb s d regions) World regions Developing Industrialized TOTAL Africa 16 - 16 Asia 41 - 41 Europe 5 10 15 Nort Centrad han l America 4 2 6 South America 7 - 7 TOTAL 73 1 2 85 Title: WORKSHOP ON THEORETICAL FLUID MECHANICS AND APPLICATIONS DatesJanuar7 2 - 9 :y 1989. Organizers: Professor . BardoC s s (Universit e Pari éd , France) IX s . BeiräH , Veiga od a (Université di Pisa, Italy), A.R. Bestman (University of Port Harcourt, Nigeria) and P.G. Drazin (Universit Bristolof y , UK). Purpose: To review theoretical and applied aspects of the subject matter. Lectures: Internal gravity waves. Existence e Euleresultd th Navier-Stoke an r r fo s s equation r non-homogeneoufo s d compressiblan s e fluids. Mathematical theor f shoco y k waves. Incompressible Euler equations, particle trajectories and related questions. Boundary-layer flows. Approximate inertial manifolds for Navier-Stokes equations. Fluid statics. Introduction to mathematical and numerical modelling in combustion. Can we predict weather? Triple-deck theory. Other interactive flows. Supersonic propeller acoustics. Flo poroun wi s medie th - a governing equations n thermaO . d rotationaan l l stability. Discrete Boltzmann equatiod an n lattice-gas models in 1D flows. Flow of a viscous fluid driven along a channel by suction at porous walls. Burger's equatio e quarteth n i n r plane formula :e wea th r k fo alimit . Rayleigh- Bénard convectio poroua n i n s box. Minimal surfaces. Convection durin e solidificatioth g a f no binary melt. Centrifugal instability e Tayler-Death : n problem. Homogenizatio f fluio n d flow through porous media. An introduction to bifurcation in fluid mechanics. Numerical bifurcation theory. Physiologica l branca flo was flui hof d mechanics. Convection. Hydrodynamic interaction between particle Reynoldw lo t a s s numbers. Turbulent heatine solath f ro ge coronath n O . boundary layer of a stagnation point reacting flow. Geometric optics approximation and hyperbolic problems. Hydromagnetic-gravity waves. No slip images in Stokes' flow. MHD power generating equations. Hydrodynamics of thin-film formation. Free Lagrangian method for @-D compressible flows. Computatio f steeno p unsteady surface waves. Analytic solution f Vlasoo s v equation. Soil compaction applicationss it mode d an l inversn A . e proble nonlineaa r mfo r porous medium equation. Stabilit incompressiblfor y e fluids. Shock waves: viscosit capillarityvs. y The . dynamics of the near field strong jets in cross flows. Numerical simulation of tidal wave propagation. Convergence criteri d Navier-Stokean a s equations. Weak nonlinear instabilitf o y two immiscible liquids with different viscositie pipea n somn i sO . e characteristic f hurricano s e inner core region inferred from laboratory simulations. Gaseous diffusio n leai n f interiors. Asymptotic analysi e temperaturth f o s e a mcropolafiel f o d r fluid with blowin d suctionan g . Solitonic solutions for generalized Boltzmann equations. Viscous dissipation flow between coaxial cylinders applicatione Th . f fluiso d mechanics. 37 Summarize e participatiod th datn o a n (Numbe f scientisto r y worlb s d regions) World regions Developing Industrialized TOTAL Africa 15 - 15 Asia 29 - 29 Europe 9 21 30 North and Central America 1 2 3 South America 8 - 8 TOTAL 62 23 85 Directors and Lecturers 26 Participants 59 Member states represented 33 Applications received 214 Title: TOPICAL MEETING ON HYPERBOLIC GEOMETRY AND ERGODIC THEORY Dates: 17-28 April 1989. Organizers: Professors G. Gallavotti (Université "La Sapienza", Rome, Italy), M. Misiurewicz (University of Warsaw, Poland) and C. Series (University of Warwick, UK). Purpose: To introduce participants to the modern theory of its subject, and to survey recent development currend an s t research problems. Programme: Topics: Basic hyperbolic geometry. Recursive structure of hyperbolic groups. Markov partitions and geodesic flows. Subshifts of finite type. Ruelle transfer operator and zeta functions. Structure of negatively curved manifolds. Lectures: Hyperbolic geometry. Infinite groups as geometric objects. Ergodic theory and subshift f finito s e type. Geodesi d horocyclan c e flows. Structur f hyperbolieo c groups. Symbolic dynamics, concrete examples Pattersod an e limit Th se .t n measure. Closed geodesie zetd an sa functions. Möbius structure circulae th d ran s flo Riemann wo n surfaces. Continued fractiond an s related transformations. Horocycle-like flows and diophantine approximations. Renewal theorems and tesselations. Ergodic theory of billiards with hyperbolic behaviour. Superhyperbolic geometry. Sullivan's non-wandering domains theorem - a sketch of the proof. Summarized data on the participation (Numbe f scientisto r y worlb s d regions) World regions Developing Industrialized TOTAL Africa 3 - 3 Asia 16 3 19 Europe 16 29 45 North and Central America 2 4 6 South America 13 - 13 International Organizations - 1 1 TOTAL 50 37 87 38 Director d Lectureran s s 21 Participants 66 Member states represented 31 International Organizations represented 1 Applications received 140 Title: TOPICAL MEETIN VARIATIONAN GO L PROBLEM ANALYSISN I S Dates: 28 August - 8 September 1989. Organizers: Professor . AmbrosettA s i (Scuola Normale Superiore, Pisa, Italyd D.Gan ) . de Figuereido (Universidade Estadua Campinase d l , Brazil). Purpose deao T :deptn i l h with very recent research problem thin i s s field. Programme: Topics: Hamiltonian systems. Crystals and calculus of variations. Nonlinear elasticity. Change of phase problems. Elliptic problems. Lectures contexttheoriesd w ol Ne :d an s . Some semilinear elliptic problems. Variational aspect f hydrodynamio s c problems. Semilinear elliptic equations with nonlinearity crossinl al g eigenvalue a finit t ebu s number. Approximation method r somfo s e nonlinear problemse Th . Palais-Smale condition versus coercivity. Morse theory for Harmonic maps. Relative category d Hamiltoniaan n systems with periodic Hamiltonian exace th n t O numbe. E f solutionOD o r n a r fo s through Morse index computation. Simplicity and isolation of the first eigenvalue of the p- Laplacian. On the singular set of the Ambrosetti-Prodi problem. Existence of solutions for resonant elliptic problems. Bifurcation from infinity in nonlinear elliptic equations involving the critical Sobolev exponent. Variational problems: topolog d physicsan y . Elliptic problems. Periodic solutions for Hamiltonian systems in a nonconvex potential well. Multiple solutions for superlinear elliptic equations. A strong resonance problem. Shape optimization for Dirichlet problems: relaxed solutions and optimality conditions. Plateau problem of minimal surfaces in Riemann manifolds. Periodic solutions of the first order dynamical system. Ordinary differential equations with impulses: a control theory applications. Crystal microstructure, Young measures, d variationaan l problem f elasticito s y theory. Variational identitie d elementaran s y applications. Periodic solution f superquadratio s c Hamiltonian systems. Nontrivial solution d eigenvaluan s e problems for Monge-Ampère type equations. Critical exponents and critical dimensions for semilinear equations. Nonlinear elliptic equations at a critical exponent. The Graetz problem - a variational treatmenn self-adjoinno a f o t t equation. Asymptotic behaviou r nonlineafo r r ordinary differential equations. Mathematical theor f stationaro y y miscible filtratione Gradth n -O . Shafranov equation. A note of eigenvalue problems of elliptic equations of high order. On the generalized Arnold conjectur r (CPefo n, FiP(CPd nan ) nx CPn, RPn). Summarize e dparticipatio th dat n o a n (Number of scientists by world regions) World regions Developing Industrialized TOTAL Africa 14 - 14 Asia 19 - 19 Europe 7 35 42 North and Central America 2 5 7 South America 8 - 8 TOTAL 50 40 9 0 39 Director d Lectureran s s 13 Participants 77 Member states represented 39 Applications received 265 Title: COLLEGE ON DIFFERENTIAL GEOMETRY Dates Octobe0 3 : Decembe1 - r r 1989. Organizers: Professors J.P. Bourguignon (Ecole Polytechnique, Palaiseau, France), M. do Carmo (Instituto de Matemätica Pura e Aplicada, IMPA, Rio de Janeiro, Brazil), H.B. Lawson Jr. (State University of New York at Stony Brook, USA) and R. Tribuzy (University of Manaus, Brazil). Purpose o introducT : e participant variouo t s s aspect f differentiao s l geometr surveo t y y current related knowledge and to draw attention to research problems and applications. Programme: Topics: Immersions of Riemannian manifolds. Curvatur topologyd ean . Harmonic functions. Differential geometr d analysisan y . Differential geometry and physics. Lectures: Basic Riemannian geometry historiA . c overvie e programmeth f wo . Function theory and minimal surfaces. A theory for turbulent dynamics. Spaces of Riemannian manifolds. Linear analysie geometerth r fo s . Toponogov theorem with applications. Differential formd an s applications. Topolog d geometran y f minimao y l surfaces e classificatioA reporth . n o t f o n complete manifolds with non-negative curvature operators. Generic minimal surfaces. Pseudospherical surface equations and Bäcklund transformations. Isoparametric submanifolds in semi-Riemannian spacese existencth n O .f minimao e l surface with free boundary. Nonlinear analysi e geometerth r fo s . Example f minimao s l surfaces. Kahler submanifold e Euclideath f o s n space. Weierstrass' representations for superminimal surfaces in S. 4 Lower bounds for the Morse a indeminima f o x l surfac. 3 ConstanR n i e t mean curvature foliation f Riemanniao s n manifolds. Modul f genuo i s zero superminimal surface . 4 EscapinS n i s g harmonic mapsn a : example. Constant mean curvature tori. Multiple solution o Plateat s d Douglaan u s problemn i Riemannian manifolds. Minimal submanifold d generalizationan s e Cauchy-Riemanth f o s n equations. Some geometric model e naturath n i s l sciences. Som resultw ne e surfacn i s e theory. Minimal hypersphere symmetrin i s c spaces. Harmonic maps heat flo n dimensionwi two. Real isometric immersions of Kahler manifolds. On the existence of minimal surfaces supported by thin obstacles. Variational techniques in geometry. Isoperimetric inequalities: an introduction. Invariant tensors and homogeneous spaces. Spherical-type hypersurfaces in a Riemannian manifold. Inner type isometries on Lie groups. Manifolds of negative curvature. An intrinsic multidimensional geometric generalizatio e wavd th sine-Gordo an f eo n n equations. Mean curvature function r codimension-onfo s e foliations. Curvature propertie f twistoo s r spaces. Geometric invariants associate space th f flao deo t t connections. Harmonic morphism threed an s - dimensional geometry. What is a twistor? A class of totally geodesic foliations of Lie groups. Regularity theory on p-harmonic obstacle problems. The normal connection and isoparametric submanifolds e Rham'D . s theore r singulamfo r varieties. Convergenc f metricso e . Einstein metrics. Geometric quantization of homogeneous symplectic manifolds. Construction of harmonic maps between pseudo-Riemannian manifolds. The geometry of R-spaces. Isotropy irreducible Riemannian manifolds. Cheeger-Gromov convergence under Ricci curvature bounds. Removable singularities of Einstein metrics. Einstein metrics on principal torus bundles. Cohomogeneity one Riemannian manifolds. The Futaki invariant. Hermite-Einstein metrics and stability of bundles. Algebraic constructio r Hermite-Einsteifo n n metric d compactificatioan s e modulth f o ni spaces. 40 seconOe nth d fundamenta lEinstei n fora f mo n 4-submanifold6 . Kähler-EinsteiE n si n metricd an s stabilit tangene th f o y t bundle. Modul f Einsteio i n metrics. Inequalitie sectionae th r sfo l curvature anRicce dth i curvatur f submanifoldseo . Geodesic spray universalityd an s . G2-stable bundled an s algebraic completely integrable systems. Calabi-Yau metrice Fermâth n o st surface. Isometries and totally geodesic submanifolds. Summarized data on the participation (Number of scientists by world regions) World regions Developing Industrialized TOTAL Africa 19 - 19 Asia 32 2 34 Europe 23 56 79 Nort Centrad han l America 6 12 18 South America 30 - 30 TOTAL 1 1 0 7 0 1 80 Director d Lectureran s s 29 Participants 151 Member states represented 41 Applications received 551 41 PHYSIC ENERGD SAN Y Title: FOURTH WORKSHOP ON PERSPECTIVES IN NUCLEAR PHYSICS AT INTERMEDIATE ENERGIES y 1989Ma Dates.2 1 - 8 : Organizers: Professors S. Boffi (Université di Pavia, Italy), C. Ciofi degli Atti (Universit i Perugiéd INFNd aan . Giannin,M Italyd an ) i (Universit i Genovéd INFNd aan , Italy)n i , co-operation with the Istituto Nazionale di Fisica Nucleare (INFN, Rome, Italy). Purpose: To review recent advances and explore future trends in the investigation of nucléo nucléod nan n structure. Lecturesnucleid an D . NucléoQC : n structure. Nucléon structur chiralityd ean . Photod an - electrodisintegratio f relativistio n c nuclei. Electromagnetic productio f mesono n d nucléoan s n resonances froe e deuteronnucléoth mth d an n .n nucleio Coheren ) n° . , Deutero(y t n photodisintegration. One- and two-nucleon emission in photonuclear reactions. Exclusive photo re actions on light nuclei. Photonuclear reactions at intermediate energies. Hard processes in nuclei. Nucléon structure functions in nuclei. Deep inelastic lepton scattering. Many-body treatment of deep inelastic lepton scattering. The CEBAF status report. The TRIUMF kaon factory. Realistic nucléon-nucléon potentials in application to few-body systems. The structure of the nuclear wave function role f tensoeo Th . r forc magnetin i e c state f heavso y nuclei. Single particle occupation numbers and natural orbitals in the generator coordinate method. Medium effects on fore th m factore nucléonth f o s . Intermediate energy nuclear physics with electron d protonsan s . (p,nd (n,pan ) ) reactions. Few-body problem n relativistii s c light cone dynamics. Projectile fragmentatio n ligho n t nuclei. Single particle energie n locai s l density approximation. High momentum transfer experiment deuterone nucléoe th th n d so nan . Inclusive electron scatterint ga high momentum transfer correlationN N . d electroan s n scattering. Proton polarizatio n quasii n - free (e,e'p) reactions. Vacuum fluctuation contribution to quasi-elastic scattering. Spectral function and electromagnetic responses in nuclear matter. Longitudinal and transverse inclusive response functions. Coincidence experimentregionV Ge e . th Inclusiv n i s e electron scatterinn go nucléo d few-nucleoan n n systems. Inclusive experiment n lee o t sa Saclay d . Exclusive experimentn Lio s . (e,e'p) coincidence experiment t Batesa s . Exclusive experiment n heavo s y 6 nuclei. Antiproton-proton scattering. Proton-antiproton annihilation in the quark model. Low energy antinucleon-nucleon physics. Antinucleon-nucleus interactions. Electric polarisabilitf o y the nucléon. Quadrupole excitation of the A resonance. Threshold n° photoproduction and chiral symmetry. Excitation of the A resonance. Pion photoproduction in nuclei. Pion electro- and photoproduction in nuclei. Summarized data on the participation (Number of scientists by world regions) World regions Developing Industrialized TOTAL Africa 6 - 6 Asia 15 1 16 Europe 1 1 76 87 Nort Centrad han l America - 14 14 South America 1 - 1 TOTAL 33 9 1 1 24 Directors and Lecturers 49 Participants 75 Member states represented 28 Applications received 165 42 Title: SPRING COLLEGE ON PLASMA PHYSICS Dates: 15 May - 9 June 1989. Organizers: Professor . BinghaR s m (Rutherfor Appletod an d n Laboratories, Chilton, UK), B. Buti (Physical Research Laboratory, Ahmedabad, India)e Angelid . V , s (Universit f Napleso y , Italy), M.H.A. Hassan (Third World Academ f Scienceso y , Trieste, Italy), Yu-Pin o (InstitutHu g e of Plasma Physics, Hefei, P.R. China), Sin(Universite gLe f Malayao y , Kuala Lumpur, Malaysia), . MahajaS n (Universit f Texao y t Austina s , USA) . McNamarB , a (Leabrook Computing Ltd., Oxford, UK), P.M. Sakanaka (Universidade Estadual de Campinas, Brazil) and N.L. Tsintsadze (Academy of Sciences of the USSR, Tbilisi, USSR). Purpose: To review recent advances in plasma physics research. Programme: Topics: Space and astrophysica! plasmas. Large amplitude wave fieldd san plasmasn si . Magnetically confined plasmas. Small scale laboratory plasma physics experiments. Third World fusion programmes and South-North collaboration. Lectures: MHD oscillations in the sun. Plasma turbulence and electrojet phenomena. Alfvenic turbulence in beam-plasma systems. Auroral electron acceleration. Planetary plasma physics. Chaotic Alfven waves. Plasma physic a solavi s r radioastronomy. Introductioe th o t n physic f largo s e amplitude plasma waves. Nonlinear effect n plasmasi s . Excitatio f largo n e amplitude plasma waves. Modulational instabilities. The modulational instability of copropagating and counterpropagating waves. Relativistic effects in plasmas. The compression of plasma by the self-focusing of short e.m. pulses. Nonlinear dynamics of e.m. waves/beams in plasmas. Relativistic instabilities of large amplitude waves in plasmas. Theory of phase conjugation in plasmas. Nonlinear evolutio f Ramao n n scattering. Accelerator e 21sth tr fo centurys . Laser plasma interactions e nonlineaTh . r optic f plasmaso s : experimentalists' viewe beat-wavTh . e accelerator: simulation results and thermal wavebreaking. Laser-plasma interactions: recent experimental results e beat-wavTh . e experiments e wake-fielTh . d experiments scaleA . d beat- wave experiment with microwaves. Acceleratio f chargeo n d particle e non-lineath t a s r stagf o e long-wavelengths plasma instabilities. Cold nuclear fusio recena n- t review. Plasma turbulence: introductory review. Cavition dynamics in strong Langmuir turbulence. Phase space diffusion in turbulent plasmas. Kinetic processes for high energy particles in magnetic active laser-produced plasma. Stimulated scattering of large amplitude waves in the ionosphere: a theoretical review d experimentaan l results. Simulation f ultra-strono s g Langmuir turbulence. Driven Alfven vortices. Statistical acceleratio f aurorao n l electrons. Plasma lenses. Plasma wigglers. Saturatio cross-field nan d couplin f beat-drivego plasmD n3- a waves. Wave envelope simulations of beat waves. Short laser pulses: wake-beat excitation of large amplitude plasma waves. Parametric processe plasmasn i s . Fluctuation anomaloud an s s transport. R.F. heatin currend gan t drive. Magnetohydrodynamics. Muon catalyzed fusion. Reduced kinetic descriptions: gyrokinetics d quivean r kinetics. Computer simulation. Kinetic theory. Cold fusion. Overvie e Thirth f dwo World Fusion programmes. Fusion programme : Argentinain s , Brazil, China, Egypt, India, Malaysi d Pakistanan a . International collaboratio n i fusion n research. Small Tokamak experiments. Field reversed configuration experiments. Rotamak. Muon-catalysed fusion: a brief history. Hydroge metals n ni - Electrolysi0 D2 . s with Pd-cathode. Experiment verificatioe th n o s n of cold fusion. Electric probe measurements. Technology of REB & FEL. Plasma focus. Pulse technology. Pinches/plasma f "colo focus t dar fusion". e Statth f o e. Optical diagnostics. Basic plasma experiments. Diagnostics smalA . l research Tokamak-Central Research Institutr fo e Physics, Budapest, Hungary. Dimensionalit f densito y y fluctuation TBR-1n i s . Mode r decafo l f o y field reversal configurations. Observatio f low-frequenco n y instabilitie a toroida n i s l magnetic field. Anomalous particle diffusion throug magnetiha c picked fence. Stud f insulatoo y r sleevd ean ceiling effec n matter-typi t e plasma focus. Plasma focus neutrons: half life measurementf o s short-lived isotopes. Magnetic field and current field distribution profiles in 3.6 KJ UNU/ICTP PFF device. Studies of the operational modes of a low energy vacuum spark. Target techniques 43 for the study of neutron production mechanism in a focus plasma. Effect of magnetic field and its configuratio outpue th f duoplasmatronn o to n currenA . - tsteppin g techniqu enhanco t e e pinch compressio experimentan a n- l study acoustin Io . c Eigen mode collisionlesa n si s bounded plasma. Ion diagnostics. Effect of edge electric field in a toroidal plasma. Summarized data on the participation (Numbe f scientisto r y worlb s d regions) World regions Developinq Industrialized TOTAL Africa 19 - 19 Asia 57 4 61 Europe 17 40 57 Indonesia and Oceania - 1 1 Nort Centrad han l America 2 18 20 South America 1 1 - 1 1 International Organizations - 3 3 TOTAL 1 06 66 1 72 Director d Lectureran s s 57 Participants 115 Member states represented 44 International Organizations represented 2 Applications received 412 Title: WORKSHO MATERIALN PO S SCIENC PHYSICD EAN NON-CONVENTIONAF SO L ENERGY SOURCES Dates: 11-29 September 1989. Organizers: Professor . NobilD s i (Laboratori i chimicd o e tecnologia i matériade a e u componenti elettroniche, LAMEL, Bologna, Italy), A.A.M. Sayigh (Engineering Department, Universit f Readingo y ) B.OUK ,. Seraphin (Universit f Arizonao y , Tucson . ,Furla G USA d nan ) (University of Trieste and ICTP, Italy), with the co-sponsorship of the Direzione Generale per la Cooperazione allo Sviluppo (Italian Ministr f Foreigo y n Affairs, Rome, Italyd Consiglian ) o Nazionale delle Ricerche (RomeR CN , , Italy). Purpose: To deal with those aspects of materials science which are particularly relevant to solar energy conversion and storage, as well as applied aspects and concrete realizations of the same subject matters. Lectures: Devices and optics for P.V. conversion. Materials for energy-efficient windows: survey. Large-area chromogenics for transmittance control. Activities at the ENEA Laboratory. Mono/poly-crystalline Si-cells. Fundamentals of amorphous silicon semiconductors. Transparent insulation materials and their application in solar thermal energy conversion. Basic physics of amorphous silicon solar cells. Design and matching for P.V. systems. Present research activities at Conphoebus (Catania, Italy). Amorphous silicon cells - production technology. The Portici Laboratories (Naples, Italy). The Delphos Project (ENEA, Rome, Italy). An overview of P.V. technologies. Amorphous semiconductors: silicon-based alloys. Toward a networs f o k centre f internationao s l scop NRSEn eo . Electromicroscop f semiconductoo y r materials. Solar cell performance characterization. Economic aspect f P.V.o s : cost f productioo s f P.Vo n . modules. Microanalysis of P.V. devices. Mini-hydropower. State of the art of wind energy. Thin films for S.E. conversion. Tandem amorphous solar cells. An overview of activities in P.V. Economic 44 aspects of P.V.: economics of P.V. applications. Research activities in P.V. Adaptation control techniques for optimized management of P.V. systems. Chemistry and technology of MOVPE for semiconductor devices. Storage. The mechanism and efficiency of photosynthesis. Telecommunication system sourced san f energso r TLCyfo . Standard qualificationd san r P.Vsfo . sources. P.V. stand alone system P.Vd san . hybrid system s- examples . Revieactivite th f wn o i y biogas and anaerobic digestion. Biomass as an energy resource. Solid liquid junction for solar energy conversion. Electrochemical energetics. Characterizatio f solio n d electrolytes. Solar energy activitie n i Aras b countries. Highlights froe Tokymth o conference. Materialr fo s nonconventional electrochemical energy sources and optical displays. Amorphous and polycrystalline semiconducting electrodes for photoelectrochemical solar cells. Summarized data on the participation (Number of scientists by world regions) World regions Developing Industrialized TOTAL Africa 60 - 60 Asia 59 - 59 Europe 29 37 66 North and Central America 7 5 12 South America 8 - 8 TOTAL 1 63 42 205 Directors and Lecturers 40 Participants 165 Member states represented 55 Applications received 603 Title: WORKSHO INTERACTION PO N BETWEEN PHYSIC ARCHITECTURD SAN N I E ENVIRONMENT CONSCIOUS DESIGN Dates: 25 - 29 September 1989. Organizers: Professors F. Butera (University of Palermo, Italy), O. Corbella (Universidade Federao GrandRi o Sulo d ed l , Porto Alegre Carle D ,. i A Brazil(Comitat d an ) o Nazionale per la Ricerca e per lo Sviluppo delFEnergia Nucleare e délie Energie Alternative, ENEA, Rome, Italy), with the co-sponsorship of the Direzione Generale per la Cooperazione allo Sviluppo (Italian Ministr f Foreigo y n Affairs, Rome, ItalyENEAd an ) . Purpose brino T : g together physicists, engineers, computer analyst architectd an s a r fo s multidisciplinary critical analysi topice th f so s mentioned here below. Programme: Topics: impace architecturae th Th n o t l design proces toole th f so s developed for the management of energy and environmental issues; their structure and characteristics. The impact of new technologies and materials. Lectures: Principle f thermao s l comfor d coolinan t g strategies. Physical principles involved in natural cooling. Natural cooling in traditional and modern architecture. Instrumentation and measurement methods. Monitored bioclimatic buildings. Introduction to monitored bioclimatic buildings in Latisana (Italy). Computer aided learning in bioclimatic architecture. TRNSYS code for bioclimatic building simulation. Computer simulations of bioclimatic buildings visited in Latisana and comparison with measured data. Computer aided 45 design and cooling issues: recent advances in simulation and in artificial intelligence applications. Coolin r outdoogfo r spaces. Architectural issue desigd san n options: pilot experiment EXPn i 2 O'9 Seville. Simulation, monitoring and evaluation of Project EXPO '92. Cooling technologies and technique meany sb f renewablo s e energy sources. Lightin transparenw g ne load d an s t materials. Passive design concept Aran si b countries. Summarize e participatiod th dat n o a n (Number of scientists by world regions) World regions Developing Industrialized TOTAL Africa 9 . 9 Asia 9 . 9 Europe 3 16 19 North and Central America 2 1 3 South America 6 - 6 TOTAL 29 1 7 4 6 Director d Lectureran s s 12 Participants 34 Member states represented 23 Applications received 144 46 PHYSICS AND ENVIRONMENT Title: WORKSHOP ON RADON MONITORING IN RADIOPROTECTION, ENVIRONMENTAL RADIOACTIVIT EARTD YAN H SCIENCES Dates: 3-14 April 1989. Organizers: Professors L Tommasino (Comitato Nazionale per la Ricerca e per lo Sviluppo dell'Energia Nuclear e delle e Energie Alternative, ENEA, Rome, Italy), H.A. Khan (Pakistan Institut f Nucleao e r Scienc d Technologyan e , Islamabad, Pakistan) . MonniM d nan , (Laboratoir Physique ed e Corpuscolaire, Aubière, France), witco-sponsorshie hth f ENEpo d Aan Direzione Generat a Cooperazionl r pe e e allo Sviluppo (Ministr f Foreigo y n Affairs, Rome, Italy) and under the auspices of the International Nuclear Track Society. Purpose o deaT : l extensively with radon monitorin y passive-typb g e detectors (typically damage track detectors s applicationit d an ) differeno st t field f sciencso technologyd ean . Lectures: The natural environmental radioactivity and the radon gas. The evolution of radiation; surveillance of the environment - the Italian experience. Indoor radon, health effects futurd an e research trends. Rado indoon ni r air dosimetre .Th f Po-210o y sampline Th . g strategy of national surve f radono y e radoTh . n chambe intercomparisoe t NRPth a r d Ban n results. Active radon monitors. Passive-type detectors. Damage track detector r alphfo s a particle registration- track formation and detector processing. Radon monitoring in radioprotection (Algeria, Brazil and Mexico) e BarTh .e detecto d survean r y results. Spark counte r alphfo r a particle registration. Radon monitoring in Peru mines. Plastic-bag radon gas monitor and survey results. The Bare detector r short-terfo s m measurements. Gamma spectrometr f o naturay l radionuclides. Laboratory experiments. Physical basi r radosfo n emissio measurementsd nan ; techniques (radon emanation, diffusion and transport, models for precursor signals and techniques). Geological prospection. Earthquakes: histor d backgroundan y ; water measurements; soil measurements; models. Radon monitoring aimed to the study of seismic processes. Radon measuring in Hungary. Volcanoes: history and background; water measurements; soil measurements; models. Geochemistry applie volcanio dt c surveillance. Resulte presenth f o s t international collaboration on radon monitoring. Radon measurement n dwellingi s s (China). Radon measurementn i s Bangladesh. Radon measurement minen i s caved an s s (Hungary). Radon measurement Nortn i s h Easter f Indiao n . Radon surve Saudn i y i Arabia. Radon monitorin n earti g h sciences (Mexico). Rado signaa s na locato t l e geothermal energy fields. Exposur radoo et housen i Adanan si . Radon measurement n housei s n Kuwaiti s . Radon measurement d Montan s e Carlo programmr fo e efficiency calculations e measuremenTh . f volumo t e activit f f radoo bedrocyo s n soii n f ga lo k buildings. Radon monitorin n Amritsai g r (India). Measurement f uraniumo s , radiu d radoman n emanation rates in Monica phosphate sample. Radon measurements in dwellings in Madras City. Environmental radioactivity programmes in Egypt. Different examples of international scientific networks. Summarize e participatiod th datn o a n (Number of scientists by world regions) World regions Developing Industrialized TOTAL Africa 16 - 16 Asia 22 - 22 Europe 12 30 42 Indonesia and Oceania 1 - 1 Nort Centrad han l America 6 3 9 South America 6 - 6 International Organizations - 1 1 TOTAL 6 3 34 9 7 47 Director d Lectureran s s 24 Participants 73 Member states represented 44 International Organizations 1 Applications received 184 Title: COLLEGE ON SOIL PHYSICS Dates: 9 - 27 October 1989. Organizers: Dr. D. Gabriels (State University of Ghent, Belgium), Prof. I. Pla Sentis (Universidad Central de Venezuela, Maracay, Venezuela), Dr. E. Skidmore (U.S. Department of Agriculture, Manhattan, Kansas, USA), and Prof. G. Ghirardi (University of Trieste and ICTP, Trieste, Italy), wite co-sponsorshith h e Direzionth f o p e Generat a Cooperazionl r pe e e allo Sviluppo (Italian Ministry of Foreign Affairs, Rome, Italy) Purpose: To provide participants with a fundamental understanding of soil physical propertie processed san thao s t apply the knowledge ma yyth e gaine solvino dt g problem soin si l physics. Programme: Topics: Soil and soil properties (intrinsic and variant). Soil measurement techniques. Soil-water (infiltration, irrigation, drainage, water balance). Spatial variabilit f soio y l physical properties. Erosion processes (wind and water erosion). Soil management. Lectures: The soil resources: classification of the soils of the world with reference to the soil physical aspects. Soil composition. Soil structure formation. Soil mechanical aspects. Water erosion processes: parameters. Modelling water erosion processes. Soil conservation techniques. Soil management principles. Rainfall, infiltration, crusting. Magnetic soil n Earto s h and Mars. Examples: soil erosion, soil conservation. Measurement of soil physical properties. Soil water potential - tensiometers. Soil imagery techniques: some results. Soil water potential - tensiometers: practical applications. Unsaturated waterflow. Wind erosion. Water balance: principles. Theoretical basis of neutron and gamma density gauges. Methods of calibration. Field applications. Introduction to the infiltration process. Evaluation of field infiltration tests. Water balance studies. Analytical solution r flo fo f swateo w n unsaturatei r d soils: transient one- dimensional flow steadd an s y multi-dimensional flows. Physical aspect f growtso functionind han g of plant roots. Movement of solutes. Movement of solutes: practical aspects. Spatial variability of soil physical properties: theor d samplingan y ; modelling; practical examples. Scaling. Water balance studies. Summarized data on the participation (Number of scientists by world regions) World regions Developing Industrialized TOTAL Africa 26 - 26 Asia 21 - 21 Europe 5 25 30 Indonesia and Oceania 2 - 2 North and Central America 1 2 3 South America 15 - 15 International Organizations - 2 2 TOTAL 70 29 9 9 48 Director d Lectureran s s 21 Participants 78 Member states represented 42 International Organizations represented 1 Applications received 271 Title: THIRD AUTUMN WORKSHOP ON ATMOSPHERIC RADIATION AND CLOUD PHYSICS Dates: 27 November - 15 December 1989. Organizers: Professors E.E. Balogun (Obafemi Awolowo University, lle-lfe, Nigeria), J. Latham (University of Manchester, UK), R. Rizzi (University of Bologna, Italy) and F. Stravisi (Universit f Triesteo y , Italy), wite co-sponsorshith h e Direzionth f o p e Generala l r pe e Cooperazione allo Sviluppo (Italian Ministr f Foreigo y n Affairs, Rome, Italy). Purpose o encouragT : e research collaboration between universitie d institutionan s n i s developing countries on projects in physics, observations, modelling and climatology of atmospheric radiation, clouds and precipitations. Programme: Topics: Cloud physics. Radiative transfer in a cloudy atmosphere. Clouds' radiative effects on climate. Remote sensin presence th n gi f cloudseo . Lectures: Could physic microphysicad an s l processes. Principle generad san l equationf o s radiative transfer. Cloud radiation interaction. Cloud dynamics and models. Radiative transfer in the visible. Cloud physics instrumentation. Interaction of radiation and clouds. Satellite meteorology. Parameterizatio f clouno d effect radiation o s GCMn ni . Radiation scheme climatn i s e models. Radiation budgeatmospheree th f o t . Cloud structure spacn si timed ean . Measuremenf o t cloud parameters fro grounde mth . Cloud radiative forcin f climateo g . Trace gase climatd an s e problems. Measurement of cloud parameters using AVHRR. Radiative properties of cirrus clouds. Cloud radiation interaction. Principles of remote sensing of atmospheric parameters from space (RSA). Effects of clouds on remote sensing of atmospheric parameters. Review of cloud clearing techniques. 3-step decoding. Cloud identification and declouding at L.M.D. Summarize e dparticipatio th dat n o a n (Numbe f scientisto r y worlb s d regions} World regions Developing Industrialized TOTAL Africa 22 - 22 Asia 19 - 19 Europe 8 20 28 Indonesia and Oceania - 1 1 Nort Centrad han l America 1 3 4 South America 6 - 6 TOTAL 5 6 2 4 80 Director d Lectureran s s 22 Participants 58 Member states represented 40 Applications received 206 49 APPLIED PHYSICS Title: COURSE ON BASIC TELECOMMUNICATIONS SCIENCE Dates Januar9 : Februar3 - y y 1989. Organizer: Professo Bladen Va . lJ r (International Unio f Radino o Science, URSI), with the co-sponsorship of the Direzione Generate per la Cooperazione allo Sviluppo (Italian Ministry of Foreign Affairs, Rome, Italy). Purpose: To be a continuous training activity to update scientists and engineers engaged e introduceb o t r i o no researc t d d developmentan h , particularl n Asiani y , Africa d Latian nn American countries. Programme: Topics: Introduction: generalitie e telecommunicationth f o s s problem. Refresher course on advanced mathematical analysis. Fourier transforms, sampling processes (discret d fasean t Fourier transform). Basic concepts of information theory. Nois n i communicatioe n systems. Spread spectrum techniques. Analog modulation systems. Digital modulation systems. Coding, multiplexing, spectrum management, data communications systems. Refresher course on electromagnetic theory. Transmission lines. Optoelectronic devices. Antennas, antenna arrays. Propagation in the atmosphere and ionized media. Satellite communication systems. Remote sensing. Lectures: Respons f lineaeo r systems. Fourie . FrequencrPC integralf o e y Us .respons e of linear systems. Impulse response. System : telecommunicatio1 s n systemsd , an ISDN T DF . FFT. Noise and probability. Baseband pulse transmission. Systems 2: Transmission media, guided waves. Analogue modulation. Analogue modulation of carriers. Angle modulation. Systems 3: transmission media, radio. Frequency modulation. Bandpass signals and noise. Probability distributions. Systems 4: radio system path loss. Random numbers probability. Digital modulation of carriers. Detection of digital modulation. Information theory and Shannon. Noise d simulationan . Error rates with digital modulation. Error rates; Mary systems. System: 5 s broadcasting. ITU, CCIR, CCITT, EBU, ABU. Coding. Detection of coded signals. Systems 6: case study. Radio relay design study. Detection of coded signals, equalisation. Spread spectrum techniques . SatellitDS , e system design study. Spread spectrum systems. Encryption. Maxwell equations. Formulation of a typical integral equation - demonstration on PC. Far field. Scattering cross-section. Element f relativityo s ; Doppler effect. Transmission lines. Basic equations. Smith chart; exercis n matchingo e ; solutio f problemo n y finitb s e differences. Field expansion i n waveguides. Introduction to optical electronics. Transmission characteristics of optical fibres. Variational procedures; solutio f problemno y finitb s e elements methods. Optical fibres. Emitting diodes. Experiment based on an acoustic waveguide. Detectors, special optical fibres, sensors. Optoelectronics r sourcea fiel f Fa .do ; multiple expansion; linear antennas e radath ; r equation. Green's function dyadicsn a s . Wave propagatio a rain n i ny environment. Rainfall data. Rain induced attenuation. Propagation effects in the clear atmosphere. Elements of ionospheric propagation. Introductio o t satellitn e communication. Satellite systems. Applications. Communications techniques. Economic considerations. Earth observation system: technical introduction; characterization of remote sensing physics; instruments for earth observation; data dissemination. Future scenarios. 50 Summarized data on the participation (Numbe f scientisto r y worlb s d regions) World regions Developing Industrialized TOTAL Africa 21 - 21 Asia 33 - 33 Europe 4 9 13 Indonesia and Oceania 1 1 2 North and Central America 3 - 3 South America 12 - 12 International Organizations - 1 1 TOTAL 74 1 1 85 Director d Lectureran s s 12 Participants 73 Member states represented 41 International organizations represented 1 Applications received 197 Title: COLLEG THEORETICAN EO EXPERIMENTAD LAN L RADIOPROPAGATION PHYSICS Dates: 6 - 24 February 1989. Organizers: Professors F. Marian! (II University of Rome, Italy) and S. Radicella (Programa Nacional de Radiopropagaciôn, PRONARP, Argentina), with the co-sponsorship of the Italian Direzione Generale per la Cooperazione alo Sviluppo (Ministry for Foreign Affairs, Rome, Italy). Purpose: To gather physicists or electronic or telecommunications engineers engaged in radiopropagation researc d developmentan h , particularl n Africani y , Asia d Latian nn American countries orden i , revieo t r w theoretica experimentad an l l aspect subjectse th f o s . Programme: Topics: Ionospheric physics. Theor f ionospherio y c radiopropagation. Measurement techniques and analysis of ionospheric parameters. Physic tropospherie th f o s c propagation. Measurement techniques of tropospheric radiopropagation parameters. Radio noise theor measurementsd yan . Lectures: Research objective e Tethereth f o s d satellites. Upper ionospherd an e magnetospheric-ionospheric coupling. Ionospheric vertical soundings d ICTw an ne O S IC . activities related to the topics of this college. The middle atmosphere. IRI and its use for radiopropagation. Statistical analysis of ionospheric parameters including correlation studies with other geophysical and solar data. Ionospheric physics in relation to radiopropagation. Low latitude atmosphere phenomena. Faraday rotation measurements. The importance of the ionosphere in modern satellite communications. Raypaths in the ionosphere. Magnetoionic theory. Raytracing. Low latitudes problems in ionospheric communications. Ionospheric absorption technique resultsd san . Obliqu backscatted ean r sounding. Propagatio systed nan m performance prediction . RadiopropagatioHF t a s n knowledg r desigfo e f higo n h reliabilit F linksH y . Atmospheric refractive index. Procedure for calculating electron density profiles from vertical incidence sounding I ionograms. Field strength estimation of abnormal long distance VHP and 51 upper HF bands propagation via sporadic-E. Precipitation and atmospheric gases. Problems of expert syste n i mionospheri c informatics. Measurements technique f o tropospheris c radiopropagation parameters. Some aspects of radiowave propagation in the troposphere. Radio noise theor d measurementan y . Space orchestra: radio sounds from space. Spectrum management. Summarize e dparticipatio th dat n o a n (Number of scientists by world regions) World regions Developing Industrialized TOTAL Africa 19 - 19 Asia 23 1 24 Europe 5 17 22 Indonesi Oceanid aan a 1 - 1 Nort Centrad han l America 2 1 3 South America 19 . 1 9 TOTAL 6 9 1 9 8 8 Directors and Lecturers 26 Participants 62 Member states represented 39 Applications received 177 Title: WORKSHOP ON REMOTE SENSING TECHNIQUES WITH APPLICATIONS TO AGRICULTURE, WATE WEATHED RAN R RESOURCES Dates 7 Februar2 : 1 Marc2 - y h 1989. Organizers: Professor CappellinV. s i (Istitut Ricercodi a sulle Onde Elettromagnetiche, IROE, Florence, Italyd Profan ) . M.H.A. Hassan (Third World Academ f Scienceo y d ICTPan s , Trieste, Italy). Dr. R. Carla (IROE) acted as Head of the laboratory. Co-sponsorship by the Italian Direzione Generale per la Cooperazione allo Sviluppo (Ministry of Foreign Affairs, Rome, Italy). Purpose: To provide the basic scientific background for researchers and users interested in remote sensing and its applications. The aim of the laboratory exercises was to improve the operator's abilit n i remoty e sensing data interpretatio d digitaan n l imaging processesn i , connection with the extraction and evaluation of environmental information. Programme: Topics: System view of remote sensing. Physical aspect f remoto s e sensing. Data acquisition and distribution. Data processing techniques. Remote sensin f weathego climated an r . Water resources assessment. Remote sensing applications in agriculture. Cartography and mapping by remote sensing. Laboratory activity. Lectures: Remote sensine airth f , o g lan d seaan d . Remote sensing systems: basic concepts. Radiometers, scanners, multi-spectral scanners. Electromagnetic radiation: Plancks, Rayleigh-Jeans laws, radiation from sun, Maxwells equations. Concepts of remote sensing in visibl , thermaIR e microwav d an l e region f EMRso . Atmospheric absorption/transmission bands- 52 mode r atmospherifo l c corrections. Introductio o digitat n l image processin r remotfo g e sensing applications. Operative sensors. Operational satellites. Dielectric concepts of moist soils - Emission/scattering properties. Radiative behaviou f grouno r d features; concep f spectrao t l signature. Image processing system desigd san n concepts. Digital image processing fundamentals. Ground receiving stations. Data distribution services. Geometric correction techniques. Radiometrie calibration and atmospheric correction fundamentals. Statistical based preprocessing techniques. Colour enhancement principles and techniques. Multispectral and multi-images processing. Principal component analysis. Fundamental f pattero s n recognitio d thematian n c information extraction. Frequency characterizatio d analysian n s techniques D digita2- . l transformations. Data compression techniques. Digital filterin applicationsand g . Local operator technique r structurfo s e detection. Image restoratio d noisan n e removal. Future perspectivd an e trend n digitao s l image analysis technique r remotfo s e sensing applications. Cloud physics processes relevan o radat t r meteorology. Recent developmen n radai t r meteorology. Satellite investigatio f cloudo n d cloudan s s structure. Forecas f o intenst e rainfal y satellitesb l . Geographical information systems. Soil/atmosphere processes. Atmospheric boundary layer model. Analysis and interpretation of thunderstorm images. Rainfall estimation techniques. Applications of remote sensing for desert lands discrimination and soil classification in arid regions. Integrated remote sensing and aeromagnetic maps for localizing ground water mega- aquifer arin i s d regions casa : e Sinae studth n ii y peninsula. Geographical information systems. Analogical picture transmission (APT - characteristic) ground an s d receiving station. Flood plain mapping and monitoring of floods. Hydrological basin models. Analysis techniques for vegetation identification. Agricultural resource surveyin d monitoringan g . Land surface processes: desertification. d Arisemi-arian d d land monitoring. SPOT imagery applications. Graphical demonstrations of fluxes in the atmosphere. Unconventional resorts in photographic analysis in geology. Surface drippin ge Argentin th stud n o y e Puna through synoptic processes low-cost orbital scenes analysis. Paleo-aeolian morpholog d naturaan y l obstructio f superficiao n l water dripping at the Argentine pampean plain through orbital standard scenes observation. Microwaves remote sensing of soil moisture: elimination of texture effect. Remote sensing applications to hydrolog n Nigeriai y : examples fro s PlateamJo Soutd uan h Central Nigeria temporaA . l studf o y waterlogging in canal command area using remote sensing techniques. Convective storms - the AVHRR Channe clou3 l reflectivitp dto consequenca s a y f internaeo l processes. Remote sensing test site of Jingyuetan; an ideal test site for comprehensive remote sensing studies. Chinese polar orbit meteorological satellite FY1. Forest survey from satellite imagery. Detecting hydrobiologica! parameters with Landsa : summe3 t r 1981 data. Digital image processinf o g remotely sense applications dit datd aan hydrologn si agriculturd yan e- som e case studies. Indian remote sensing satellite (1RS-1A) - an overview. Summarize e dparticipatio th datn o a n (Number of scientists by world regions) World regions Developing Industrialized TOTAL Africa 22 - 22 Asia 28 1 29 Europe 6 22 28 Indonesi Oceanid aan a 2 - 2 Nort Centrad han l America 4 1 5 South America 14 - 14 International Organizations . 1 1 TOTAL 7 6 2 5 1 01 Directors and Lecturers 26 Participants 75 Member states represented 40 International Organizations represented 1 Applications received 293 53 Title: SECOND ICFA SCHOO INSTRUMENTATION LO ELEMENTARNN I Y PARTICLE PHYSICS Jun3 Dates2 - e 2 19891 : . Organizers: Professors C.W. Fabjan (CERN, Geneva, Switzerland), J.E. Pilcher (Universit f Chicagoo y . ,Poropa P USA d an ) t (Universit f Triesteo y , Italy), wite assistanchth f eo the ICFA Panel for Future Instrumentation, Innovation and Development. Co-organizers: ICFA and Istituto Nazional i Fisicd e a Nucleare (INFN, Trieste, Italy). Co-sponsorshi e Direzionth f o p e General a Cooperazionl r pe e e allo Sviluppo (Ministr f Foreigo y n Affairs, Rome, Italy)e th , European Organization for Nuclear Research (CERN) and the United State National Science Foundation (NSF). Purpose o emphasizT : e didactith e c treatmen e principleth f o t f detectoro s o t d an s provide informatio trendn o n n instrumentatioi s detectod nan r requirement e upcominth t a s r o g planned accelerator facilities. Programme: Topics: Physic particlof s e detectors (gaseou soliand sd state devices, calorimetry, electronics). Applications (particle physics, biology, cosmology). Lectures: Introductio o laboratort n y sessions. Gaseous detectors. Physics limitationo t s particle detection. Electronics. Data acquisitio processind nan g with small computers. Conceptual desig f collideo n r experiments. Calorimetry. Detector r astroparticlfo s e physics. Summarized data on the participation (Number of scientists by world regions) World regions Developing Industrialized TOTAL Africa 2 - 2 Asia 20 - 20 Europe 5 42 47 Nort Centrad han l America 2 14 16 South America 11 - 1 1 International Organizations - 6 6 TOTAL 40 62 102 Directors and Lecturers 31 Participants 71 Member states represented 28 International Organizations represented 2 Applications received 171 Title: FIFTH COLLEGE ON MICROPROCESSORS: TECHNOLOGY AND APPLICATIONS IN PHYSICS DatesOctobe7 2 - 2 : r 1989. Organizer: Mr. C. Verkerk (CERN, Geneva, Switzerland). Dr. Dai Jialin (P.R. China/ICTP) acte Laboratorye s Heada th f do . Co-sponsorshi Direzione th f po e Generata l r epe Cooperazione allo Sviluppo (Ministr f Foreigo y n Affairs, Rome e Uniteth f ,o d Italy d Nationan ) s University (Tokyo, Japan). 54 Purpose: To bring participants, in a period of 4 weeks, to a level which would enable the develomo t p microprocessor-base thee d us msystem o t efficiently d an s . Programme: Topics: General introduction to microprocessors. Microcomputer hardware: Architecture, interfacing, etc. Assembly language programming. Technique r microprocessofo s r project development. Application f microprocessoro s varioun i s s fields. Lectures: Introductio o Logict n . Introductio o (Micro)computerst n . Characteristice th f o s 6809. Assembly language programming. ROS YFLEX+ . Microprocessor interfacing Colombe Th . o '84 board. Personal computers in the USSR. Software tools and techniques. A/D, D/A and V/F conversion e ColombTh . 4 Kerne'8 o l software s basicsBu . . Software toold techniquesan s . Transputers. Introduction to projects. Array logic. Maintenance. Other microprocessors. Real time systems. Introducing the Microprocessors Laboratory and ROSY Junior. Computer modelling of computer elements. Floating point. DSPs. Multichannel analysis. Laboratory Sessions: Logidules, AND, OR, majority, full adder, flip flop. Shift register, latch, counter, ALU. Rosy, demo hands-on, commands, debugging. Hand-coding. FLEX introduction, commands, file system, editor, assembler. Flo f controlo w , if...then...else, while...do..., repeat...until..., case. Subroutines principals, parameter passing. I/O logidules on Rosy, decoding, read/write registers. PIA basics, display on ICTP board. PIA control lines, counters. Repetition, finish previous exercises, free programming. Interrupts logidules on Rosy, interfacing to IRQ. D to A, DAC on logidules, voltage supply, function generator. A to D simple DVM, successive approx. V/F, V/F conversion on ICTP board. Projects. Summarize e dparticipatio th datn o a n (Numbe f scientisto r y worlb s d regions) World regions Developing Industrialized TOTAL Africa 24 - 24 Asia 54 - 54 Europe 3 9 12 Indonesi Oceanid aan a 2 - 2 North and Central America 6 1 7 South America 1 1 - 1 1 International Organizations - 4 4 TOTAL 100 1 4 1 1 4 Director d Lectureran s s 23 Participants 91 Member states represented 44 International Organizations represented 3 Applications received 621 Title: SECOND WORKSHOP ON TELEMATICS Dates: 6 - 24 November 1989, Organizers: Professors G. Perrucca (Centro Studi e Laboratori Telecomunicazioni, CSELT, Turin . Pitk,M Italyd e an (Centr) r Developmenefo f Telematicso t , Bombay, India), with the sponsorship of the Italian Direzione Generale per la Cooperazione allo Sviluppo (Ministry for Foreign Affairs, Rome, Italy). 55 Purpose fundamentae focuo th T : n o s l aspect f digitao s l communication computerd an s s theid an r rol evolvinn ei g information network futuree th f so . Programme: Topics: Fundamental f digitaso l communications. Packet switching. Networks and protocols. ISDN. New transmissio distributiod nan n media. Video services. Communications software. Satellite networks. Lectures: Telecommunication d informaticsan s . Telematic d developinan s g countries. Telephony basics. Wide band network. Data transmission protocols. Digital transmission. Switching. Packet switching. Digital signal processing. Telecommunication network. Telematics and developing countries. LAN WANSd San . Packet switching: practical aspects. Automatic speech recognition. Introduction and speech synthesis. Satellite communication. Optical transmission systems. Communication software. Cambridge HSLANs. Real-time application n higo s h speed packet networks. VLSI. Laboratory work: Electronic telephone. Speech Codec. Digital switching. Digital signal processing. Digital tone generation. Telephony software. Data communicationt Bi . synchronisation. PABX demonstration. Optical fibre kit demonstration. Summarized data on the participation (Numbe f scientisto r y worlb s d regions) World regions Developing Industrialized TOTAL Africa 16 - 16 Asia 49 - 49 Europe 3 5 8 North and Central America 4 1 5 South America 13 - 13 International Organizations . 1 1 TOTAL 85 7 9 2 Director d Lectureran s s 26 Participants 66 Member states represented 32 International Organizations represented 1 Applications received 345 Title: ICTP-INFN COURSE IN BASIC VLSI (Very Large Scale Integration) DESIGN TECHNIQUES Dates Novembe6 : Decembe1 - r r 1989. Organizer: Professor A.A. Colavita (Argentin . TurrinS d ICTP) . aan Dr i . (ICTP) actes da Head of practical exercises. Co-sponsorship of the United Nations University (Tokyo, Japan) and the Italian Direzione Generate per la Cooperazione allo Sviluppo (Ministry of Foreign Affairs, Rome, Italy). Co-operatio - Europea2 ES f o nn Silicon Structures which provide software dth e used durin Coursee gth . 56 Purpose continuoua e b o T : s training activit introduco t y e scientist engineerd an se th o st desig f VLSIsno . Programme: Topics: Top-down digital design. General VLSI design techniques. Design of optimized gate arrays. Formal verificatio f hardwareo n . Lectures: Course overview. Digital design: Boolean algebra; realizing logi hardwaren i c ; building blocks for digital design; sequential machines; practicing design. Introduction to the desig f optimizeno d arrays: overview; schematic capture; model language; simulation; analogue cells; wavd physicaan e l design; generator d synthesisan s ; requirement r testsL fo s WD ; language; Solo 20XX presentation. VLSI technology: introduction to VLSI technologies; MOS physic designd an s ; CMOS processing technolog d layoutan y ; logicircuid an c t design; system desig desigd nan n methods; CMOS subsystem design approachew ne ; VLSIr sfo . Presen futurd an t e fabrication techniques: general overview of fabrication illustrated by means of the 7 mask NMOS process; basic fabrication steps, viz. patterning (lithography), layering, etchin dopingd an gw ne ; technological trends, e.g sitn i . u proces nanometed san r technology. Laboratory: Two-four line decoder. Basic f Unixo s : some basic command d editan s. Model codd symboan e l editing s constructioBu . four-sixteed an n n decoder. Ignition regulator. Window detector. RAM module. Seven-segment BCD decoder. Summarize e dparticipatio th datn o a n (Numbe f scientisto r y worlb s d regions) World regions Developing Industrialized TOTAL Africa 5 - 5 Asia 17 - 17 Europe 2 8 10 Nort Centrad han l America 2 2 4 South America 10 - 10 International Organizations - 1 1 TOTAL 3 6 1 1 47 Directors and Lecturers 13 Participants 34 Member states represented 22 International Organizations represented 1 Applications received 94 57 PHYSIC SPACE TH F ESO Title: WORKSHO SPACN PO E PHYSICS: MATERIAL MICROGRAVITSN I Y Dates 7 Februar2 : Marc7 1 - y h 1989. Organizers: Professor . MannV s d H.Uan o . Walter (European Space Agency, Paris, France), wite co-sponsorshith h e Italiath f no p Direzione General a Cooperazionl r pe e e allo Sviluppo (Ministry of Foreign Affairs, Rome, Italy). Purpose: To give an overview of the present status of microgravity research. Programme: Topics: Fluid static capillarityd an s : fluid management systemn i s space. Fluid dynamics problems relate gravityo dt . Heat and mass transport. Combustion. Lévitation techniques and processing of glasses for advanced applications. Crystal growth of semiconductors. Alloy r higfo s h temperature applications. Crystal growth from solutions. Protein crystallization. Crystal growth of detector materials by vapour transport. Microgravity-adapted processing technology. Lectures: Microgravity environment e spacTh . e environment (effects) e scientifiTh . c programm f ESAo e n overviewA : . Testing Newtonian gravit n spacei y . Present microgravity systems/facilities. Future microgravity systems/facilities casA . e stud n materiali y s research: a-Hg! 2rooa , m temperature semiconducto a-rayd r detectoan - sx r (Grounfo r d based research: developmen e materiath f o t l properties; vapour growth mechanisms; diffusion coefficient measurement facilit r vapoufo y r phase experiments vapouw ne a ;r growth facilit r largfo y e single crystal n spacei s . Experimental results under microgravity.) e spacTh . e infrastructurf o e the nineties - The International Space station and the COLUMBUS Programme. Liquid menisci and their stability. Thermodynamics of capillarity. Interfacial instabilities in liquid layers (interfacial and volume instabilities in liquid layers; introduction to the phenomena and model approaches; cellular convection and other steady modes of instability; oscillatory instabilities and waves at interfaces; linear problems; harmonic oscillator description; oscillatory instabilities and waves at interfaces; nonlinear theories and comparison with experiments and suggested experiments.). Wetting and stability experiments performed in parabolic flights. Capillarity and materials processing in spaces. Competition between spontaneous transverse and longitudinal waves at liquid interfaces. Liquid-vapour and solid-liquid interfaces. Spacelab experiments on fluid statics d stabilityan . Transparent model experiment e separatioth n o s f o monotectin c alloys. Thermodynamic d kinematican s f surfaco s e phases. Volum d surfacan e e balance equations. Entropy productio d phenomenologicaan n l relations. Orde f magnitudo r e analysis, Marangoni, natural combined convection. Elements of thermodynamics and dynamics of line phases. Typical problem n fluii s d sciences. Marangoni Stokes flows. Marangoni boundary layers. Experiment classes, facilitie d availablan s e platforms. Operational aspect experimentsS F f o s . Tolerabl- G e levels. Recent result n fluii s d dynamics. Marangoni Navier Stokes flows. Marangoni Navier Stokes flows with deformable interfaces. Physiological effect f microgravito s y (heard an t circulation; the body fluids; pulmonary gas exchange; muscles and locomotion; the working man.). Maintaining good health and performance in space. Life support requirements. Introduction to the rol f gravite growto e th d developmenn i yan h e operatioth e gravit o f t th planto tf d o ny an s sensing syste mn plani t organs. Exploitatio e microgravitth f no y environmen r studfo tf basio y c developmental processing and sensory systems in plants. The interface of physics and biology in space. Experimental approach/results. Mechanisms/hypotheses. Basic research/biomedicine/ biotechnology. Crystal growth froe meltmth . Segregatio d diffusive-convectivan n e transport. 58 Solidification of metals. Crystal growth techniques. Interfacial momentum, heat and mass transport. Gravity level requirements for Bridgman crystal growth. Crystal growth: results from experiments. Mass transport by diffusion. Theory of phase transitions. Crystal growth from aqueous solution on the ground and in space. Combustion (general introduction; turbulent combustion; droplet combustion; microgravity combustion.). Nucleatio d crystallizatioan n n i n glass processing melts. Nucleation kinetics. Industrial perspective n advancei s d glassed an s possible contributio f microgravito n y experiments. Holographic diagnostic method n crystai s l growth from solution. Containerless processing by electromagnetic lévitation. Material science and microgravity: a Vietnamese point of view. Metallurgy. Alloys and composites. Summarize e dparticipatio th datn o a n (Numbe f scientisto r y worlb s d regions) World regions Developinq Industrialized TOTAL Africa 2 - 2 Asia 24 - 24 Europe 1 35 36 Nort Centrad han l America 3 1 4 South America 2 - 2 International Organizations - 5 5 TOTAL 32 4 1 73 Director d Lectureran s s 27 Participants 46 Member states represented 24 International Organizations represented 1 Applications received 97 59 ANNIVERSARY ADRIATICO RESEARCH CONFERENCES All Adriatico Conferences are organized under the chairmanship of Professors S.O. Lundqvist (Chalmers University of Technology, Göteborg, Sweden) and H.A. Cerdeira (University of Campinas, UNICAMP, Brazil, and ICTP). e Adriaticth e f generao Th om ai Conferencel o brint s i sg together leading expertn i s different field o present s t their approache conceptd o makan st d e an sthe m interact wite hth other participants. Title: INTERFACE BETWEEN QUANTUM FIELD THEOR CONDENSED YAN D MATTER PHYSICS Jun3 Dates2 - e 0 19892 : . Organizers: Professors E. Brézin (Ecole Normale Supérieure, Paris, France), H.A. Cerdeira (Brazil/ICTP) and Yu Lu (P.R. China/ICTP), with the co-sponsorship of the International Schoo r Advancefo l d Studies (ISAS-SISSA, Trieste, Italy). Purpose o providT : a forue r discussiomfo f differeno n t contemporary aspecte th f o s subject matters, mainly in their common points. Programme: Topics: Anderson localization. Quantum Hall effect. Lattice calculation in QCD. Hubbard model and superconductivity. Conformai field theories. Quantum spin chains. Random surfaces. Wess-Zumine Th o models. Topological phases. Random fields. Lectures: Overview of some uses of quantum field theory in condensed matter physics. Conformai field theory and statistical mechanics: an overview. Conformai field theory. Renormalization of statistical parameter in three-dimensional Chern-Simons electrodynamics. Spin-Peierls groun ddimensionaw statlo f o e l quantum antiferromagnets. Holea quantu n i s m antiferromagnetic approacw ne : d exacan h t results. Conformai invarianc e operatoth d an er content of general Heisenberg models. The simplest S-matrix of all. Fractional quantum statistics: possible relevance to high Tc superconductivity. Spontaneous generation of quantum holonom - yfractiona l Hall effec . anyovs t n superconductivit strongln i y y correlated electron systems. Statistics transmutations in three dimensions. Renormalization group studies of anomalous diffusio n randoi n m media. Surface d polymeran s n randoi s m media. Flux phasen i s tight binding models. Recent resulttheore th f randon i so y m surfaces dynamie Th . c toughnesf o s crystal surfaces. Compressibility and superfluidity in the fractional statistics liquid. Stochastic equations and BRS symmetry. Quantum gravity in 2-dimensions and string theory. Statistics for string d gravityan s . Anderson transition. Universal singularitie quantue th n i s m Hall effecte Th . Landau-Boltzmann approach to localization. Introduction to quantum groups and some of their applications. Spin glasses e ordeth : r paramete s interpretationit d an r . Slave bosonsN 1/ , expansion and the Anderson lattice model of heavy fermion systems. Large N limit of the two- Kondo impurity problem. Coulomb gas representation of conformai field theories. Fluctuations in granular superconductors: some hints toward perspectivesw ne s . Emergenc growtA DL f o hn i e e shapth f classicao e l diffusion-controlled fronts. Path integrals with topological constraints: entanglemen f stringso t e integrablTh . Z chai t XX ecriticalitya n . Quantizatio f topologicao n l excitations in continuum models for high Tc superconductors. String statistical mechanics at high energy densities. Application of thermo-field dynamics to the quantum spin glass problem. 60 Summarized data on the participation (Number of scientists by world regions} World regions Developing Industrialized TOTAL Africa 1 - 1 Asia 13 - 13 Europe 6 29 35 North and Central America 1 1 1 12 South America 6 - 6 TOTAL 27 40 6 7 Directors and Lecturers 28 Participants 39 Member states represented 17 Applications received 88 Title: QUASICRYSTALS Dates: 4 - 7 July 1989. Organizers: Professors M.V. Jaric (Texas A. & M. University, College Station, USA) and S.O. Lundqvist (Chalmers Universit f Technologyo y , Göteborg, Sweden), witco-sponsorshie hth p e internationaoth f l Schoo r Advancefo l d Studies (ISAS-SISSA, Trieste, Italy). Purpose o providT : a criticae l overvie e physicath f wo l propertie f quasicrystalo s s followed by a focus on current progress and open questions in theories of quasicrystals. Programme: Topics: Physical properties. Relationship with glasses and large-unit-cell crystals. Symmetry classification. Structure models (quasiperiodic, icosahedral glass, twins, etc.). Cohesive energy, stabilit d elasticityan y . Freezing, growth, facetin defectsd an g . Vibrational, electronic and magnetic states. Transport properties. Lectures: Recent developments in the study of quasicrystals. Superlattice, microquasicrystals and approximants. Quasicrystal structure determination - AI-Cu-Li. The structur f quasicrystalso e : advantage d limita neutro an f so s n diffraction approach. Icosahedral alloys without phason disorder. Microcrystalline state of pseudo-icosahedral symmetry, crystallin o quasicrystallint e e phase transformatio e AI-Cu-Lth n d AI-Cu-Li n an i d AI-Cu-Fan i e systems. Octagona dodecagonad an l l quasicrystals. Quasiperiodic array n thii s n film f AI-Mno s . e symmetrth n O f tilingo y d quasicrystalsan s . Characterization f ordeo s n aperiodii r c structures and arithmetical properties. Entropically stabilized quasicrystals. Tetracoordinated quasicrystals w algorithe ne generatioth A r .fo m f o quasicrystalsn . Quasicrystals, approximations and dynamical systems. Simple quasicrystalline tilings. Quasicrystals versus modulated crystals. Topology of atomic surfaces in icosahedral quasicrystals. Modelling quasicrystal growth. Phason elasticity and surface roughening. Quasicrystal grain boundaries fro e entropimth d density-wavan e e viewpoints. Soft mode crystallization y onlyWh . quadratic irrationals are observed in quasicrystals? Kinetic roughening of quasicrystals. Defective vertex configurations in quasicrystals. Displacive mappings form quasiperiodic to periodic patterns. Dislocation n i decagonas l AI-Cu-Co alloy. Multifractal analysi f localizatioo s n problen mi 61 quasiperiodic systems. Real space renormalizatio criticad nan l propertie f Fibonacco s i potentials. Electronic structur f quasicrystalso e e electronith n O . c propertie a three-dimensiona f o s l quasicrystal with weak potential. Diamagnetism in quasicrystalline superconductors. Algebraic symmetrie n quasicrystai s l scattering data. Crossover behaviour from 'extended o chaotit ' c wavefunctions in 1d quasicrystals. Quasiperiodic Hume-Rothery stable alloys in 1d: an exact solution. Where and how large are the gaps in spectra of deterministic aperiodic systems? Novel transition between critical and localized states in a 1d quasiperiodic system. Thermal properties oclassicaa f quasicrystald l 2 mode a f o l . Vibrational propertie f Fibonacco s i chains withoud an t with defects. Summarized data on the participation (Number of scientists by world regions) World regions Developing Industrialized TOTAL Africa 3 - 3 Asia 8 3 1 1 Europe 7 25 32 North and Central America 2 11 13 South America 4 - 4 TOTAL 24 39 63 Director d Lectureran s s 31 Participants 32 Member states represented 17 Applications received 82 Title: STRONGLY CORRELATED ELECTRON SYSTEMS Jul1 Dates2 y- 19898 1 : . Organizers: Professors A. Ruckenstein (University of California, La Jolla, USA), E. Tosatti (International School for Advanced Studies, ISAS-SISSA, Trieste, Italy) and Yu Lu (P.R. China/ICTP), wite co-sponsorshith h e Internationath f o p l Schoo r Advancefo l d Studies (ISAS- SISSA, Trieste, Italy). Purpose brino T : g togethe groua r f leadinpo g researcher revieo st recene wth t progress an idea w o discusd techniquet dne an s e th s s which appear most promisin r treatingfo e th g difficult problem subjece th n i s t matter. Programme: Topics: Rigorous result exacd an s t solutions. Numerical simulations and diagonalization. Variational wave many-bodfunctionw ne d san y approaches. Field-theoretical techniques and the connection with gauge theories. Scaling and renormalization group. Lectures: Phenomenological constraint theorien o s f higo s hT superconductors . Strong correlation and novel superconducting states. Theorc y of metal-insulator transition. The spiral phase and superconductivity in the doped Heisenberg model. Quasiparticles in doped planar antiferromagnet. Self-consistent renormalized motion of holes in a quantum antiferromagnet. Numerical studies of the t-J model: exact ground state and flux phases. Finite size calculations on HubbarD 2 e th d model. Fermion quantum Monte Carl d Hubbaran o d model. Preliminary group 62 theory analysis of a 4x4 two-dimensional Hubbard model. Properties of two-dimensional systems with fractional statistics. Anyons on a lattice. Superfluidity of the anyon gas. Spin singlet fractional quantized Hall states A mode. r orbitafo l l antiferromagnetism. Twisted superconductor d twistean s d magnets. Magnetis + superconductivity?m( HubbarD 2 e th dn i ) model. Intersite correlatio n variationai n l wave functions exactlw Ne . y tractable limir fo t correlated lattice electrons. Correlated fermions on a lattice in high dimensions. Heavy fermions: past, present and future. Understanding of NMR in high T0 materials. Slave boson approach to the Hubbard model. Itinerant vs. localized AF of CuO2 layers within a slave boson approach. Instability of the ferromagnetic state in the large U limit of the Hubbard model. Strongly correlated, quasi-one-dimensional bands: group states, optics, and phonons. Nematic and dimer states in low dimensional magnets. Raman spectra and strong O-O fluctuations in YBa2Cu3O7. Topological statistics transmutatio d superconductivityan n . Treatmen f strono t g correlationy b s projection techniques. Pairing theor n two-dimensionsi y . Importanc f spin-flio e p processen i s quantum antiferromagnets. One loop corrections to the Gutzwiller approximation (within the slave boson approach). Quasiparticle photoemissiod san n spectr correlaten ai d electron systems. Bindin f holone chirao g th n i ls spin states supersymmetrie Th . c Hubbard mode d higc an T hl superconductivity e effec Th f .topologicao t l excitation e two-dimensionath n i s l quantum Heisenberg antiferromagnet. 4KF correlations in 1D systems revisited. U=°° Hubbard model: towards the exact solution in d=°°. Summarized data on the participation (Number of scientists by world regions) World regions Developing Industrialized TOTAL Africa 1 - 1 Asia 9 2 11 Europe 19 31 50 Indonesi Oceanid aan a - 2 2 North and Central America - 15 15 South America 5 - 5 International Organizations - 1 1 TOTAL 3 4 5 1 85 Directors and Lecturers 37 Participants 48 Member states represented 23 International Orqanizations represented 1 Applications received 100 Title: COMPUTATION PHYSICSN I PHYSICD SAN COMPUTATIOSN I N Dates Septembe9 - 5 : r 1989. Organizers: Professors R. Car (International School for Advanced Studies, ISAS-SISSA, Trieste, Italy), B.A. Huberman (Xerox Palo Alto Research Center, Palo Alto, USA) and A. Sadiq (Pakistan Institute of Nuclear Science and Technology, Islamabad, Pakistan), with the co- sponsorshi e Europeath f o p n Research e U.SOfficth f .o eArmy , IBM-Itale Internationath d an y l School for Advanced Studies (ISAS-SISSA, Trieste, Italy). Purpose provido T : e bot expositio e foruha th r mfo f recenno t development numerican i s l algorithm r physicasfo l problems overvien a d an f ,advancew o s applicatioe madth n ei f physicno s to the understanding of parallel computation. 63 Programme: Topics: Thermodynamic microscopid san c behaviour from microscopic simulation moden so l systems. Phase transitions and critical phenomena. Quantum simulations. Truly fundamental limits to computing. f nonlineao e us e r dynamicTh statisticad san l mechanicr sfo The understanding and design of computers. Neural networks. Lectures: Complex ordering phenomen n simpli a e systems. Fundamental limito t s information. Molecular dynamics studies of structural slowing down and the glass transition in simple systems. Decompositio f informatioo n n with respec o scal t d tcorrelatio an e n length. Entrop d complexitan y f cellulao y r automata. Special purpose processor r statisticafo s l mechanical simulations. The ecology of computation. Metastability in distributed computation. An overview of computations in material physics. Simulation spectroscopy and vibrational localizatio amorphoun i n s glasses. First-principles molecular dynamics polarizablA . e charge site mode r watefo l r usin extended gan d Lagrangian. Recent advance quantun si m mechanical reactive scattering. Path integral treatments of static and dynamic processes in liquids. The use of neural networks for finding structure in chemical languages. Hyphenation in natural languages by neural networks. Doing physics on the connection machine. Quantum dynamics by numerical simulation. Numerical simulation of many-fermion models in condensed matter physics. Computational methods in quantum field theory. Neural nets. Quantum Monte Carlo for chemical systems: a new pseudo-Hamiltonian technique. Ground-state fermion Monte Carlo simulations. Numerical simulatio f modele higo n c th materialsT h r fo s . Dynamical propertie e two-dimensionath f o s l Hubbard model. Concluding remarks. Summarized data on the participation (Number of scientists by world regions) World regions Developing Industrialized TOTAL Africa 7 - 7 Asia 19 1 20 Europe 15 23 38 Nort Centrad han l America 3 12 15 South America 9 - 9 International Organizations - 1 1 TOTAL 53 37 9 0 Directors and Lecturers 29 Participants 61 Member states represented 33 International Organizations represented 1 Applications received 152 64 OTHER RESEARCH Dates: Throughout the year. Purpose o alloT : w scientists wishin o avait g l themselve e Centre'th f o s s facilities (library and computers) and of the presence of ICTP consultants and other experts to carry out independent research in periods when no activity is scheduled in their fields of interest. Summarized data on the participation (Number of scientists by world regions) World regions Developing Industrialized TOTAL Africa 65 - 65 Asia 104 - 104 Europe 19 35 54 Indonesia and Oceania 1 - 1 Nort Centrad han l America 7 5 12 South America 19 - 19 International Organizations - 7 7 TOTAL 21 5 47 262 Figures also include short-term visitors comin r organizationafo g l activities only. 65 MICROPROCESSOR LABORATORY The activities of the Microprocessors Laboratory (ICTP-INFN), sponsored by UNU, were articulated alon e followingth g lines: 1. Training activities in microprocessors and technical support given to these activities. 2. Activities of the joint ICTP/INFN Microprocessor Laboratory, including condensed reference to the realization of technical projects. ) Trainin(1 g activities During the year, the Laboratory had a very heavy load of activities. The following training and collaboration-in-training activities took place: 1. "First African College on Microprocessors: Technology and Applications", held in Accra, Ghana, from January 9 to 27. This course accepted 45 participants and was under the direction of Dr. Nii Quaynor (Digital Equipment Corporation, USA). e "FiftTh h Colleg . 2 Microprocessorsn eo : Technolog applicationd an y n Physicsi s " that took plac Triestn ei e from Octobe Octobeo t d 2n r r 27th. Ninety-six participants were accepted out of 621 applications received. The Director was Prof. C. Verkerk. The Laboratory personnel also actively worked in the preparation of: e "WorkshoTh . Telematics"n 1 po . This college took plac Triestn ei November4 e2 froo t m6 . Eighty participants were accepted out of 345 applications received. The Directors were Dr. G. Perrucca and Dr. M. Pitke. 2. The "Course on Basic VLSI Design Techniques" took place in Trieste from 6 November to 1 December e cours Th s als. wa eo co-sponsore Trieste th y db e Sectio f INFNno t I laste. d four weeks and accepted 42 participants. The Director was Prof. A. Colavita. "INFe Th N Schoo . 3 VLSn o l I Techniques" took plac Triestn ei December5 e1 froo t me 4 Th . course accepted forty participants from whic fron Thire hte m th d World. This courss ewa unde directoe th r f Profo r . CentraS . . The preparatio f fivno e courses during this period require dloaa d without precedene th n o t Laboratory personnel. (2) Activities of the joint ICTP/INFN Microprocessor Laboratory including a short referenc o t technicae l projects (a) General Activities w equipmenta.1Ne . e LaboratorTh : y incorporate Vaxstatiow ne a d n 3100. This graphic statio e Unis purchaseth nwa x e operatinus o dt g syste me Berkele th require n ru yo dt Too l Set. It was incorporated to the VLSI activities during July 1989. The Laboratory also has a new Hewlett Packard plotter capable of handling paper sized from A4-AO. This plotte s needei VLSe r th r I dfo activitie coursesd an s . For the design of VLSI circuits, the Laboratory obtained the permission to use the Berkeley Tool Set. This full-custom design software is between the best available anywhere. It will be used in the joint project with the Astronomy Department of UCB. a.2. Technical projects This is necessarily a short summary of the scientific projects being carried out or started in the laboratory. Extended reports exist for each of these projects. . 1 Constructio d testin 32-bia an n f o g t single board computer Zhong-Reo Ga . n (Academia Sinica, Beijing, China), Pedro Battaiotto and A. Colavita. The final configuration is a single board computer, with 128 kb of Rom, 256 kb of static Ram, four RS-232 ports, one parallel port, three timers and one I/O extension connector. s choseoperatine th wa s OS-a n9 g systems reai t i l tims a s e i.e., very efficien r datfo t a acquisition purposes (finished). 2. Development of a multichannel analyzer board using a digital signal processor and on board 66 "sequencer" and resident processor. Profs. Pedro Battaiotto, Alberto Colavita, Dai Jialin d Fabian o Fratnik. IBM-Pn Thia s i s C compatible Multichannel Analyzer board hige Th h. speed obtained in the Motorola 56001 Digital Signal Processor allows it to be used as the board "sequencer" plupossibilite sth linen "o "f o yprocessin signale boare th f Th go .d will software b e upward compatible witsimilae h th boar P LI r d (concluded). Developmen Rosy-Flea f o t OS-d an x 9 hardwar softward ean e development station. Prof. Dai Jialin (Department of Computer Engineering, Shanghai University of Technology, Shanghai, China), Pedro Battaiotto . ColavitA , Fabid aan o Fratnik. Training computer is a single board system with a 6809 at 2 Mhz, 128 kb of EPROM and 64 kb of static RAM, with all the input and output ports that characterized the Rosy development station designe build t Laboratore CERdan a t th r Nfo y courses EPROMe Th . s contain the ROSY software, a 64 kb RomDisk and they will also contain the OS-9 Kernel (installatio DivisioD D . Verker C e s f carriey CERN)th no b t nwa systet e a k dou Th s . mha tw o3 1/2 " floppies instea usuae th f 1/25 dlo " drives memore changes i Th p . ma y d from e OS-th Fle o 9t x configuration throug softwara h e switch. Forty system e beinar s g built afirsa s t batch (concluded). Desig Vera f no y Large Scale Integrated Circuit using optimized gate array techniquea r sfo Telephony Signal Handler, P. Battaiotto, F. Fratnik, S. Venkataraman, M. Darus, Dai Jialin. A Telephony Signal Handler (TSH circuia s )i t component thatelephon8 12 t scano t p esu lines to detect signals such as phone on/off hook, dialling pulses etc. This is a very critical function that cannot be accomplished directly by the main microprocessor controlling the switch. This task is then left to the TSH. The TSH will communicate all these events to the microprocessor so that it can take the appropriate action. This chip is being designed using the Solo 1200 Cae package. When finished it will be a 20,000 transistor design implemente 5 micro1. n di n CMOS logic (desig shrinkind nan g froo t m2 1.5 microns concluded). Software computer d self-healingan s . . ColavitaGallarA R development.w d dan Ne . n i s programmable array logic allow us to think the CPU of a computer system as being part of the softwar e systemth f o e . Taking this approach n conceivca e w ,a ecompute r that repairs itself with a very fine degree of grainess. Different strategies for self-healing and the formal presentation of the principle are explored (concluded). Energ Processom Su y r e secon(ESP)th r fo d, level trigge f LEPo r . LanceriL . . P , Battaiotto . Colavit. A FratnikF , d an a. This syste s develope mwa e Delph th r fo id experiment at CERN. On board it has a 56001 DSP from Motorola plus two XILINK software programmable Gate Arrays. This very high speed board reads 8 numbers coming fro mprevioua s board that represen energe th t y detected, add numbere sth compared an s s witm hpre-definea su e th d threshold energe th f I y. detecte s largedi r thathresholde th t , it will flag other subsequent parts of the data acquisition system to further continue the analysi e datath f ,o s otherwis t ei wil l flae systee kinth gth d f mo t thae evenno th t s i t sought s softwari t I . e programmable fro mFastbua s interfac t i doe d s an eself-diagnosis . Four boards were built and it is operating successfully at CERN (concluded). Summarize e dparticipatioth datn o a n (Numbe f scientisto r y worlb s d regions) World regions Developing Industrialized TOTAL Africa 1 - 1 Asia 7 - 7 Europe - 1 1 South America . 7 - 7 TOTAL 1 5 1 1 6 67 HIGH TEMPERATURE SUPERCONDUCTIVITY EXPERIMENTAL LABORATORY Ove e course firsth th r t f o yeae f activityo r e Higth , h Temperature Superconductivity Laboratory has achieved significant progress in the areas of scientific activity, collaboration with other research institutions, organizatio instrumentatiod nan n capability e laboratorTh . n ca y now be considered among the most important superconductivity research institutions active in Italy. This status is confirmed by: 1) the prompt response of the CNR "project for superconductin cryogenid gan c technologies r researcou o t " h programmes r participatioou ) 2 , n ni the preliminary phase of the Italian Research Ministry's "National Research Project for Advance Innovativd an d e numbee Materialsth ) 3 f scientifi o rd an " c contribution presentee b o t s d at the forthcoming National Conference on High Temperature Superconductivity. The initial results of the Laboratory's research activity have been presented in scientific papers, recently submitted for publication or presented at conferences. In April 1989, the Laboratory was host to the Second Experimental Workshop on High Temperature Superconductivity. This workshop proved to be significantly more successful than the 1988 edition, particularly as regards the effectiveness of the training given to participants who were able to continue research activity on high temperature superconductivity in their home institutions. Over the course of 1989, the laboratory has also performed service activities such as sample preparation for other laboratories and measurement of samples produced elsewhere, In addition, we have functioned as a coordinating centre for scientific collaborations between laboratories in Italy, Austria and Yugoslavia which undertake sophisticated measurements of samples prepared by laboratories in developing countries (including Brazil, Cuba, Czechoslovakia, Egypt, India, Iran, Mexico, Pakista d Thailand)an n . Whil e projecth e r fo t developmen f low-coso t t scientific instrumentatio t beec no nho s initiatedd ha n a o lact f o ke du , funding, the design of two inexpensive magnetometers for use in Third World Laboratories has been undertaken by the Technische Universität Graz (Austria) and Birmingham University (United Kingdom). Personnel The positive results obtained thus far are in large part due to the patient and enthusiastic contributions of the scientists who have spent time in the laboratory during its first year of operation e experienceTh . f thio s s past year indicate thae efficienth t t operatioe th f o n laboratory, given the special circumstances which dictate a continual turnover of scientific personnel, can be guaranteed by a minimum staff of two research scientists and a technician. In this way there can be a continuity in the management and research programme of the laboratory as well as ongoing development and maintenance of research equipment. The short-term visiting scientists have proven to be effective in supporting the research activity of the laboratory, particularly during the second half of 1989, when the research programme and experimental methodology were sufficiently well-establishe o permidt a rapit d arrivalw integratione e sth f o n into research activities which quickly produced useful results. Instrumentation Experimentaland Techniques Sample preparation The instrumentation consist: of s 4 tub e— furnaces with temperature contro o 1000°Ct l ; —tub1 e furnace with 16-step programmable temperature control o 1200°Ct ; — 1 muffle furnace with 9-step programmable temperature control to 1250°C; 1 muffl — e furnace with 9-step programmable temperature contro o 1150°t l d controllablCan e atmosphere (Ar/02); —2 recirculatin g hoods with filterin r solventsfo g ; — 1 recirculating hood with filtering for acids; metallographi1 — c polishing wheel; bal1 l — mill; 68 — 2 hydraulic presses with pellet dies to 20mm diameter; analytica2 — l balances (0.000; g) 1 balanc1 — e (0.0. 1g) In addition, the laboratory maintains a stock of laboratory reagents consisting of approximately 180 items. The techniques of sample preparation for oxide compounds (particularly cuprates) have been continuously improved. The process for synthesis of sintered samples of high purity through solid state becomw reactiono s enha standardize d use r dpreparatioan d fo f ove0 no 10 r compounds with varying compositions (primarily cation substitutio n knowi n n high temperature superconductors). In addition, much work has been done on developing a methodology for chemical determination (titration) of the oxygen content of the compounds synthesized. e flux-growtTh h metho r preparatiofo d f cupratno e single crystal s beeha s n perfecteo t d the degree that it is now possible to obtain crystals of up to 40 mm 3 reproducibly. This expertis e resulth f carefus o ei t l studie phase th f so e diagram f rarso e earth oxide-alkaline earth oxide-copper oxide systems. While we have not yet acquired a thin film deposition system, we have been able to gain valuable experienc d begi an en active a n research programm thin i e s important field througa h collaboration witCNR-LAMEe hth Bolognan Li . Sample Characterization » e instrumentatioTh n consist: of s — 1 closed-cycle cryogenic refrigerator capable of reaching 10K with inserts suitable for measurement of electrical conductivity (1) and thermal conductivity and thermopower (2). e formeTh r insert permits measuremen whilK t e lattedow10 th e s i o limitet rn o t d measurement above 40K measuremene .Th t syste ms completeli y automate d permitdan s up to 3 measurement cycles per day with insert 1 and one cycle with insert 2. 1 liqui —e flow-cryostaH d t capabl f reachino e witK 4 gh insert r electricafo s l conductivity (3) and a.c. susceptibility (4). Insert 3 can be directly con-nected to the measurement system described above. Insert 4 is part of a mutual inductance bridge measurement system which is also com-pletely automated and capable of measuring the real and imaginary component f a.co s . susceptibility simultaneously dow 10Ko nt . — 1 automated critical current measurement system for use at 77K and 4.2K. Fourie1 r— transform infrared spectromete r measuremenfo r f absorptionspectro t a between 4800 cm~1 and 400 cm"^ on powdered samples andboth absorption and reflection spectra (usin n infrarea g d microscope)between 480 cm~0 n microscopi075 o ^ crrr d an ^ c samples (down toabout 30 microns). — 5 personal computers, 2 exclusively used for automating the measurements of electrical conductivit a.cd an y . susceptibilit othee th use3 rd an yd forgeneral purpose (calculatiof no X-ray diffraction spectra, structural refinements, infrared spectra analysis, graphics and word processing). micromanipulato1 — r makinfo r g electrical contact smalo t s l samples. — Liquid Heliu 0 literd Nitrogem(6 an ) 5 liter(7 n ) dewar r transporfo s d storage an th t f o e liquid cryogens used in the measurement systems described above. e improvemenTh e experimentath f o t l techniques use o characterizt d e physicath e l propertie superconductinof s g sample fundamentaa is s l activitlaboratorythe of ydegre The . e and range of the various quantities measured is continually being perfected. The electrical conductivity measuremen infrared an t d transmission spectroscopy have reache higda h degref eo reliability, while susceptibility (both a.cd d.c. an .d therma )an l conductivit d thermopowean y r measurements are only reliable above 40K and 50K respectively. All the data acquisition and control programmes have been develope y laboratorb d y personne e undear d r an continuoul s revision. Collaborations The financial constraints imposed on the laboratory during 1989 did not permit completion 69 e planneoth f d instrumentation. These limitations were overcome, whenever possible, through collaboration with other research institutions n Triestei : e Chemistrth , y Department (X-ray diffraction on single crystals), the Mineralogy Department (X-ray diffraction of powder and thin film specimens), the Institute of Applied Chemistry (metallography, thermoanalysis and scanning electron microscopy) of the University of Trieste and the TASC of the INFM; outside Trieste, the CNR-ITM Milano (electron microscopy and machine shop), the CNR-LAMEL Bologna (thin film deposition and electron microscopy), the Technische Universität Graz (microanalysis and transport measurements in single crystals), the University of Zagreb (magnetic measurements) anCNR-ISe dth M Bologna (Raman spectroscopy). Completion of Instrumentation At the end of the first year of operation, the High Temperature Superconductivity Laborator s equippei y fundamentae d th wit l al h l experimental instrumentation (buld singlan k e crystal sample preparation, electrical conductivity and a.c. susceptibility measurements) except for X-ray diffraction othee th rn O hand. have w , e been abl equio et r laboratorpou y with some specialized measurement techniques (infrared spectroscopy, thermal conductivity and thermopower) which have prove e usefub o attractinn t i l g visiting scientists. Considering the relatively limited funding available over the next year, we are faced with e alternativth f acquirino e n X-raa g y diffractomete t leas(a r t $200,000), thus completine th g "essential" instrumentation acquisitioe th r o , f otheo n r experimental instrumentation which will broaden our ability to perform synthesis and characterization. The latter strategy appears to be indicated, since ther alreade ar e X-ra2 y y powder diffractometer r personneTriesten i sou d an , l has full access to one of these (Department of Mineralogy) and relatively easy access to the other (Institute of Applied Chemistry). Summarized data on the participation (Number of scientists by world regions) World regions Developinq Industrialized TOTAL Asia 6 . 6 Europe 3 3 6 Nort Centrad han l America 1 1 2 South America 2 - 2 TOTAL 1 2 4 1 6 70 LAMP Laboratorw ne e openin n vieth e I f th r wLasero f fo y o g d Fibr an s e Optic n 1990i se th , following informal activity was also held from August 1989: Title: LAMP - LASER , ATOMIC AND MOLECULAR PHYSICS Organizers: Professo . DenardG r o (Universit f Triesto y d ICTPean , Trieste, Italy). Seminars: Squeezed light. Laser Raman and Infrared spectroscopic studies of molecular systems. Atomic Rydber d non-Rydberan g g states. Semiconductor laser r opticafo s l communications. Hfs-investigations of 3-d elements and holographic interferometry. Optical observation of LAMB waves. Systematics of non-hydrogenic trends in the photoionisation and radiative recombinatio f one-electroo n n systems. Intermediate-couplin2 n= g e effectth n o s resonant photoionization of multiply-charged helium-like ions. Photoelectronic spectroscopy via electronic spectroscopy of molecular ions. Surface plasmon on rough metal films. Tunable flash lamp excitation dye laser system. The effect of polarization over 2nd harmonic in light scattering by electrons. Laser-induced fluorescenc F usine Ba (LIF gf o hig) h resolution Fourier-transform spectrometry. Surface hardening of AI-Bronze alloys using ruby laser. Optical full-parallel matrices multiplications. 71 LONG-TERM SCIENTIFIC VISITORS The tables below show the number of scientists who were invited to take part in the research for 3 months and longer in 1989. Table I Fiel f intereso d t Scientists % vs. total Person/months % vs. total Preprints Fundamental physics 65 38.69 399.87 38.99 64 Condensed matter 33 19.64 198.44 19.35 26 Mathematics 35 20.83 211.76 20.65 50 Plasma physics 1 0.60 7.79 0.76 4 Microprocessorb La s 14 8.33 104.97 10.24 Communications 3 1.79 22.16 2.16 High Tc Lab 9 5.36 64.08 6.25 2 Other 8 4.76 16.47 1.61 3 TOTAL 1 68 1025.54 1 49 Table II Areas Number of Scientists Number of Person/months Dev. Ind. Dev. Ind. Africa 18 , 115.82 _ Asia 79 4 436.80 35.70 Europe 13 16 73.08 113.52 Nort d Centrahan l America 7 6 50.93 28.80 South America 25 - 170.89 - TOTAL 1 42 2 6 847.52 178.02 GRAND TOTAL 1 68 1025.54 72 NETWOR ASSOCIATF KO E MEMBERS AND FEDERATED INSTITUTES REPORASSOCIATE TH N O T E MEMBERSHIP SCHEM 198N EI 9 Report Networe th n so f Associate ko Federated san d Institute available sar requestn eo . - 1REGULAR ASSOCIATES Associate Member e scientistar s s frod workinman n developini g g countriee ar o wh s appointed, upon recommendation of the Scientific Council, for a period of six years during which they are entitled to pay three research visits to the ICTP. Each of such visits should not exceed 90 days but should last more than six weeks during the appointment period. Then, if the 3x90 = 270 days have not been fully utilized during the 6-year period, the remaining days may be used for additional visits for which the ICTP will not bear the costs of the travel expenses. During their period at the ICTP, Associate Members work either independently or in collaboration with other scientists in residence and attend workshops, conferences or extended courses. Centre Th e expects that they wilengagede b l thein i , r home countries enhancinn i , g physics and mathematics education at the secondary, polytechnical and college levels as well as teaching and research at the university level. Moreover, they should also pay attention, in their research work problemo t , f physico s mathematicd san s connected with their locale. In 1989, the list of appointed Associates included 430 scientists. Fifteen appointments Associatf w 1988o ne d 7 ,en expire e th Member t da s were appointe appointment8 d dan s were extended. One hundred and seventy Associate Members (40%) came to the ICTP for a total of 351.77 person/months wit n averaga h e duratio f stao nf 2.0o y 6 person/months (nearlye th same averag 1988)n i numbee s ea Th . f visito r somewhas si t lower than that normally expected becaus numbee appointmentw eth ne f t o compensatr no d sdi numbee eth f expireo r d appointments. Associate Somth f eo e Members r variouf coursfo o , d san e reasons like academic requirements or family situations, break the 2-year cycle by anticipating or differring the timing of their visits with respect to the time they would normally be expected at the ICTP. Tables I and II show to what extent the Associate Membership scheme has been used from the geographical areas and from the research interests viewpoints respectively. Table I Number of Associates Entitled to a Research Visit in 1989 and Numbe f Associateo r o Actuallwh s y Came, by Geographical Areas Areas Number of Associates Numbe f Visito r s # % vs. total Visits . tota%vs l P/Months . totavs l % Africa 108 25.71 53 31.18 109.25 31.06 Asia 223 53.10 87 51.18 188.87 53.69 Europe 17 4.05 1 1 6.47 18.44 5.24 North & Central America 1 7 4.05 3 1.76 10.78 3.06 South America 61 14.32 16 9.41 24.43 6.94 Total 426 170 351.77 73 Table II Numbe f Associateo r s Entitle a Researc o t d h Visi n 198I t 9 by Scientific Field of Interest Field f o Interess t Number of Associates Numbe f Visito r s # % # % Fundamental physics 71 16.67 27 15.88 Condensed matter 127 28.81 46 27.06 Mathematics 68 16.19 27 15.88 Physics and energy 77 18.33 37 21.76 Physics and environment 44 10.48 16 9.41 Living state 27 6.43 g 5.29 Applied physics and high tech. 12 2.86 8 4.71 Total 426 1 70 Tabll il e Summary 1. Regular Associate n 1989...... 430i s * 2. Regular Associates in 1988...... 430 3. Appointments expired at the end of 1988...... 1 5 4. New appointments starting in 1989...... 7 5. Extensions and renewals starting in 1989...... 8 6. Member states represented in 1989...... 43 7. Regular Associates visiting ICTP in 1989...... 1 70 . 8 Numbe f persom/months...... 351.7o r 7 9. Average duration of stay...... 2.06 person/months . 10 Numbe f preprinto r s produced ...... 72 of these 4 were entitled to visits after 1989. e intellectuaTh l benefits which Associates derive from their research periode th visi t a t ICT numerouse Par . Man f theo y m succee publishinn di paperga . This year preprint2 7 , s were prepare y Associatdb e Members, either aloncollaboration i r eo n with other averagn (a s f 0.4eo 2 papers/Associate against 0.65 papers/Associat n 1988)i e . Associates, while at the ICTP, have an opportunity to re-orient their research, to collaborat distancea t a e , once thee bacar y k home, with their colleague f otheo s r developing countrie r froo s m industrialized countrie o updatt r o s e their scientific literature and r man,fo y of them improvo t , e their teachin t theiga r home universities. 2 - SENIOR ASSOCIATES Some of the former Associates of the ICTP who have acquired an international reputation and/or have distinguished themselves as "entrepreneurs" in their home countries in the research academion i r c traininge appointeb y ma , d Senior Associate ICTe th f Po s upon recommendatiof no the Scientific Council. The duration of the appointment is 6 years during which they may draw from a fund of 4,000 US$ for each of them which can be used for subsistence and travel in relatio theio nt e ICTPr th visi o t .t 74 Senior Associates Centre comth r variouo et efo s reasons. Some take advantag f theieo r visit r carryinfo s t theiou g r research since then concentratca y n theio e r work being relieved from their administrative duties. Others come for boosting the collaboration between their colleagues and the scientists of the ICTP. Others take advantage of their being in Europe to come e ICTtoth orden Pi atteno t r workshoda r conferencpo e interestine whicb n hca r themselvegfo s or their collaborators givo t seminarr ea o , . ICTe th P, lisf Senioo Itn1989 r Associates include name7 d5 s fro Membe1 m2 r States. Twenty Senior Associates representin 5 Membe1 g r States a totacam f r 28.8o lfo e 6 person/months. Therefore, the average duration of a research visit was 43 days (1.44 person/months). They produce preprintd3 camd san e fro followine mth g geographical areas: Africa...... 3 Asia...... 1 0 Indonesia and Oceania...... 1 North and Central America...... 1 South America...... 5 - JUNIOR 3 ASSOCIATES Junior Associates are selected among those participants in the ICTP extended courses and workshops who work at institutions in developing countries with poor library facilities. A Junior Associate is appointed for four years and is entitled to a 350 US$ grant for buying scientific books and/or subscribing to scientific periodicals which must be made available to his/her colleagues expiratioe th t A . f theino r appointments, Junior Associate consideree sar d candidates to the Regular Associate Membership Scheme. In 1989, 158 scientists held a Junior Associate appointment. Tabl eI show distributioe sth Junioe th f no r Associate geographicay b s l areas, while Table I I shows their distributio y fieldnb f interesto s . Table I Distributio f Junioo n r Associate y Geographicab s l Areas Areas Junior Associate. totavs l % s Africa 85 53.80 Asia 60 37.97 Indonesi Oceanid aan a 1 0.63 North & Central America 4 2.53 South America 8 5.06 8 15 TOTAL 75 Table II Distributio f Junioo n r Associate y Fieldb s f Intereso s t :ield f Intereso s t Junior Associates % vs. total :undamental physics: Elementary particles 5 3.16 Condensed Matter: Atomic physics 6 3.80 Solid state 42 26.58 Mathematics: Applied Mathematics 2 1.27 Mathematics 27 17.09 Mathematical ecology 2 1.27 Dhysic energyd an s : Nuclear physics 6 3.80 Plasma physics 5 3.16 Renewable energies 1 0.63 Solar Energy 10 6.33 3hysics and environment: Climatology/meteorology 3 1.90 Geophysics 22 13.92 Soil physics 9 5.70 Dhysics of the living state: Biophysics 2 1.27 Medical physics 2 1.27 \pplied physics: Communications physics 3 1.90 Computational physics 1 0.63 Microprocessors 10 6.33 TOTAL 1 58 4 - FEDERATION AGREEMENTS e past e ICTth th A,n i sP concluded Federation Agreements with institution developinn si g countries whereby these institution seny ma sd their scientist specifiee ICTa th r Pfo o st d number of days, dependin e locatio th institutioe th n go f no n with respec Triesteo t t limiteA . d numbef o r agreement alss i s o concluded with European institutions, mainl Eastern yi n Europe. Federated Institutions are encouraged to send their junior scientists to Trieste when activitie f theio s r interes e takinar t g e ICTPplacth t a .e Scientists from Federated Institutes, therefore, attend extended courses, workshops, conference r discuso s s their research projects with ICTP scientists and use its computer and library facilities. terme Th f somAgreemente so th f eo t varianca e sar n i e D wit d h an thosC f , typeeo B , sA order to take particular local conditions into account. Special Agreement concludee ar s d with institution Irann i s , Kuwai Qatard an t . The utilization of the resources offered by the Standard Federation Agreements is summarize Tabln di . eI 76 Table I Standard Agreements 1. Agreements proposed...... 383 . Agreement2 s signed...... 383 . Agreement3 s utilized...... 245 4. Scientists who benefited from the Agreements...... 61 4 . 5 Member states which benefited fro Agreements...... 5e mth 5 6. for a total number of person/months...... 508.66 7. Total p/months allocated for the 245 agreements utilized...... 536.50 8. Utilization rate...... 94.81 For the Special Agreements, the utilization of the resources was as shown in Table II. Table II Special Agreements Institutions Visitors Days Person/months 1. Islamic Republic of Iran 7 172 5.65 2. Kuwait Foundation for the Advancement of Science 1 1 280 9.21 3. Kuwait University a) from Arab and Islamic Countries 4 122 4.01 b) from Kuwait University 6 155 5.10 4. University of Qatar 2 23 0.76 TOTAL 3 0 752 24.73 Tabl I showeII s total r Standarsfo Speciad dan l Agreements. Table III Typ f o agreemene t # Visitors # Person/months Standard 614 508.66 Special 30 24.73 Total 644 533.39 Not - e533.3 9 person/months represent 14.40e totath f l% o person/month r ICTfo s P activities held in Trieste. 77 TRAININ RESEARCD GAN ITALIAT HA N LABORATORIES Dates: Throughou yeare th t . Organizers e programmTh : s co-ordinatewa e y Professorb d . FurlaG s n (Universitf o y Trieste and ICTP, Trieste, Italy), G. Denardo (ICTP, Trieste, Italy) and E. Tosatti (International School for Advanced Studies, ISAS-SISSA, and ICTP, Trieste, Italy), in collaboration with Advisory Committee e field n eacth i s f so h concerned e ItaliaTh .n National Commissior fo n Nuclea Alternativd an r e Energies (ENEA, Rome, Italy) offere speciada l contribution. Purpose o givT : e participant n ICTi s P activitie e opportunitth s f widenino y g their experience by becoming directly involved in different branches of physics with the research wor f laboratorieo k t Italiaa s n universities, governmenta industriad an l l research centres. Programme: In 1989, 170 scientists representing 31 developing Member States worked - with grants from the Centre - in 131 Italian laboratories for a total of 1116.66 person/months. The research subjects included: Biophysics Climatology Communication physics Computational physics Condensed matter physics Energies Geophysics & Oceanography Lasers Physics Medical physics Microprocessors Plasma physics Soil physics A detailed repor s availabli t requestn eo . Summarize e participatiod th datn o a n (Number of scientists by world regions) World regions Developing Industrialized TOTAL Africa 35 - 35 Asia 87 - 87 Europe 14 - 14 Nort d Centrahan l America 1 1 - 1 1 South America 23 - 23 TOTAL 170 - 170 78 REGIONAL ACTIVITIES CO-SPONSORED BY THE CENTRE A externae reporth n o t l activitie n 198i s 9s availabli requestn eo . In 1989, the International Centre for Theoretical Physics through its Office for External Activitie table th eco-sponsos n i belowswa t 3 activities ou addition I 13 t .f se o r s thato nt a , 0 1 , fellowships for visiting scholars/consultants came into operation. 28 activities in Africa (Algeria, Burundi, Egypt, Ethiopia, Ghana, Malawi, Mali, Morocco, Nigeria, Sudan, Tanzania, Uganda, Zimbabwe); 8 activitie4 n Asii s a (China, India, Indonesia, Iraq, Jordan, Malaysia, Nepal, Pakistan, Singapore, Sri Lanka, Thailand); 6 activities in Europa (Czechoslovakia, Hungary, Turkey, Yugoslavia); 51 activitie n Latii s n America (Argentina, Brazil, Chile, Colombia, Costa Rica, Cuba, Ecuador, Mexico, Peru, Venezuela). 79 THE ICTP DONATION SCHEME BOOK DONATION PROGRAMME During 1989 e Centr ,th s abl o distributewa et e 13184 journals, 4062 proceedings, 6119 book 828d an s9 publication moro st e thainstitution0 n70 developin0 10 n i s g countries. Besides the donations directly distributed by the Centre, about 100 donations of complete sets of back- issue f journalo s s have been shipped directle donorth y o about b sy 0 institution6 t 0 4 n i s developing countries. EQUIPMENT DONATION PROGRAMME Hundred f pieceo s f equipmeno s t from CERN were sen o institutiont t e followinth n i s g countries: Colombia, P.R. China, Iran, Jordan and Pakistan. The Centre received a generous offer of approximately 43 items of surplus equipment from Dr. Iftikhar Ahmad in London. They were sent to 13 universities in the following countries: Bangladesh, Colombia, Egypt, Iraq, Jamaica, Nigeria, Pakistan, Peru, Tanzania and Uganda. 80 SCIENCE, HIGH TECHNOLOGY AND DEVELOPMENT Title: SCIENCE, HIGH TECHNOLOGY AND DEVELOPMENT PROGRAMME Dates: Throughou yeare th t . Organizers: Professor H.R. Dalafi (ICTP). Purpose: To increase the awareness of scientists of the role of physics in social and economic development o infort d man , Third World scientist f potentiao s l source f assistanco s e for physics researc s applicationit d hdevelopmenan e th o st t need f theio s r countries. Lectures: Science, High Technology and Development Weekly Programme: The role of artificial intelligenc n developmenti e . Economic developmen e Thirth dd Worldan t e physice Th th . f o s Boolean observer. Cold nuclear fusion e presenTh . t international system: approached an s implication developmene th r fo s t process. Third World: concept d reality an ,developmene Th . f o t development thinking. Feasibility of minimising initial investment and operational costs for industry. Science polic developinn i y g countries. Scienc technologd ean - ysom e implicationn o s economic development. Colloquium: e applicationTh f fluio s d mechanics birte f quantuTh h.o m mechanics. Erwin Schrödinge rise f wavth eo d ean r mechanics. Cold fusion: atomi r nuclearo c ? Cold nuclear fusion: a recent review. Bogolubo y f lifmathematico eM - v d physicsan s . Cold fusion: recent experimental results. Toward naturaa s l scienc f languago e d mindean . Orientation mappingA . theoretical stud f colo y d nuclear fusion. Evolution, selectio d cognition o makan nt w a e Ho . massive particle from light? Ultra-violet X-ray and y-ray astrophysics. The puzzling neutrinos. A col duniversee starth o t dimension4 trole f eo Th . physicsn si . Electron phonon structured san Raman effec n superlatticesi t . Symplectic, contac d superconformaan t i geometr d physicsan y . Models, approximation d hypothesesan s . Surface phase transitions. Sailwingsd an s . Fractional charg d fractionaan e l statistics. Omnipresent spinors. Dynamical reduction modelsw ne a : approach to the difficulties of the quantum theory of measurement. Centrifugal force: a few surprises. Mind-machine problem n psychologca : e reduceb y o neurosciencedt concepe Th ? f o t "qualit fundamentaf lifea yo - " l aspec f planningo t . Seminars: Hubert's Beweistheorie: foundations of automated theorem proving. Knowledge processing paradigm: some cognitive aspects and knowledge representation schemes. Resolution- refutation system for monotonie reasoning. Automated theorem proving in non-monotonic systems. Topology and quantum field theory. Summarized data on the participation (Numbe f scientisto r y worlb s d regions) World regions Developing Industrialized TOTAL Asia 3 - 3 Europe . 4 4 North and Central America - 1 1 Souh America 1 - 1 International Organizations - 1 1 TOTAL 4 6 1 0 In additio theso nt e invited lecturers scientist6 2 , s participatin n othegi r programmes also gave lectures. 81 UNESCO PROGRAMME ON THE HISTORY OF SCIENCE Dates: Thiprogrammw ne s startes Octobe7 1 ewa n do r 1989. Organizer: Professo . MehraJ r , UNESCO Distinguished Professo f Historo r f Scienco y e (UNESCO, Paris, France and ICTP, Trieste, Italy). Lectures: A tribute to the vision of pioneers. The Mida's touch or the fate of Lazarus? The dream of Leonardo da Vinci. Angel architects: the development of physics in the 20th century. Promethean fire e e livegrad workth th : an stf o spioneer o havwh se createe th d scientific world view of nature. Max Planck and the origins of quantum theory. The young Albert Einstein historicaThe . l origin speciaof s l relativity theory. 82 HOSTED ACTIVITIES Title Dates Organizer 1. Scientific Conçu E.U.G. VI 21-23 February 2. Meeting of ISCSS 7 March 3. Third World Network of 8-9 March Third World Academy Scientific Organizations of Sciences (TWAS) 4. INFN School on Advanced Studies 12-18 March INFN in Nuclea Subnuclead an r r Physics 5. Womens' Study Group 20-22 March TWAS . 6 Workshop/Symosiu "Moleculan mo r 29-31 March ICGEB Genetics of Lower Eukaryotes" 7. Bouchet Council Meeting 13-15 April Offic f Externao e l Activities . 8 Trieste Encounter Congnitivn so e Science 26 June-7 July SISSA . 9 Meetin Marketinn go g Strategies 3 July Area di Ricerca 1 0. SARF General Meeting 22 August TWAS . 11 Meetin n "Fundamentalgo f Quantuso m October SISSA Mechanics" . 12 International Schoo f Philosopho l y 2-14 October SISSA of Science 13. I Meeting of the International Commission 19-20 October TWAS on Food for Peace 1 4. Council Meeting 20 October TWAS . 15 Meeting TWOWS Committee 20-21 October TWAS 1 6. TWNSO Executive Board Meeting 21 October TWAS . 17 Worksho r Policpfo y Makern so 21 October TWAS Environment and Development 18. International Conference on Desert 6-8 November TWAS Environment . 19 INFN Schoo VLSn o l I Design 4-15 December ICTP 83 AWARDS DIRAC MEDALS OF THE ICTP 8 August 1989 e DiraTh c Medal e ICTth Pf o s were institute n 198di memorn i 5 f Profo y . P.A.M. Diraca , honoured gues stauncd an t h frienICTPe Medalo th f Tw awardede o . sar d yearl r contributionyfo s to theoretical physics. The selection committee includes Professors S. Lundqvist, R. Marshak, J. Schwinger, S. Weinberg, Abdus Sala othersd mDirae an Th c. t awardeMedalno e ar sNobeo d t l Priz f Woleo f Foundation Prize winners. Michae . GreeB l n from Queen Mary College , Johd London . an SchwarnH , UK , z froe mth California Institut f Technologyeo , Pasadena, USA, wer e 198eth 9 recipient Dirae th f cso Medals of the International Centre for Theoretical Physics "for their basic contributions to the development of superstring theory. Most significant was their discovery that chiral gauge anomalies absent dimensionalclassare a ten for of superstring theories. This provided stronga indication that superstring theory with a specific gauge symmetry may provide a consistent unified quantum fundamentaltheorythe of forces including explosionan to gravity,of led it interest in string theory which has already spurred remarkable advances both in mathematical physics and in pure mathematics". HIDEKI YUKAWA PRIZE 8 August 1989 Dr. Ashoke Sen from the Tata Institute of Fundamental Research, Bombay, India, was the recipient of the Yukawa Prize "for his contributions to string theory, and in particular for the application of the sigma model approach to the heterotic string theory. He has contributed to the development techniquesof superstringof perturbation theory higherat genus which have enhanced stringthe theory understanding space-timeof supersymmetry non-renormalization theorems. He has also studied the implications of modular invariance in the problem of the classification of rational conformai field theories in 2 dimensions". Annual ICTP Prizes were created in 1982 by the Scientific Council of the Centre in recognition of outstanding contributions to physics and mathematics by scientists from and workin developina n gi g country. They cheque$ consis US medala 0 n i t. 00 certificat a , 1 a d ean Prize On awardes ei d each year. Until now Prizee th , s have been awarde honoun di late th e f o r Alfred Kastler (France), Nobel Prize 1966 and Chairman of the Scientific Council from 1970 to 1983 e latth e, Manuel Sandoval Vallarta (Mexico), Chairma e Scientifith f no c Council from 1964 to 1970, Sigvard Eklund (Sweden), Director General Emeritus of the International Atomic Energy Agency (IAEA, Vienna, Austria), Nikola . BogoluboN j v (USSR) greaa , t e ICTPfrienth . f W do , Heisenberg (Germany), Nobel Priz . YukaweH 1932d an a, (Japan), Nobel Prize 1949. Posters announcin Prizee gth circulatee ar s d throug Centre'e hth s mailing list. 84 PART HI PUBLICATIONS ISSUE N 198I D 9 PROCEEDINGS Date f o activits y Title of Proceedings Publisher Pages 1. 1987, 9 Feb-6 Mar Remote Sensin Resourcd gan e Exploration World Scientifi0 c30 Publishing Co. (WSPC), Singapore p Se 8 -1 . g 2 1987Au 6 2 , Materials SciencPhysice th d esan WSPC 572 of Nonconventional Energy Sources 3. 1987, 14-25 Sep Economics, Modelling, Plannind gan WSPC 800 Management of Energy 4. 1987, 21-25 Sep Worksho Interaction po n between Physics 1 2 "Sola d an r and Architectur Environmenn ei t Conscious Wind Technology" Design . 5 1987 Nov-19 , c De 8 Lecture Riemann so n Surfaces WSPC 704 . 6 1988 5 Feb-11 , r Ma 8 Workshop on Applied Nuclear Theory and WSPC 924 Nuclear Model Calculation for Nuclear Technology Applications 7. 1988, 11-22 Apr Superstring8 '8 s WSPC 471 8. 1988, 27 Jun-5 Aug Superstrings, Unified Theories WSPC 656 and Cosmology 1988 . 9 1988, 8-1g 2Au Fifth Marcel Grossmann Meeting WSPC 1800 (Perth, Australia) (2 vols.) . 198910 , 8-1y Ma 2 Workshoh 4t Perspectiven po n si WSPC 734 Nuclear Physics at Intermediate Energies e proceedingTh f anotheso activitie4 1 r s hel t print198n di a e 9.ar 85 PREPRINTS AND INTERNAL REPORTS Numbe f preprinto r internad an s l reports issue 1989n di : 432. Numbe f preprinto r internad an s l reports produce y scientistdb s from developing countries: 339. PREPRINTS AND INTERNAL REPORTS IN FUNDAMENTAL PHYSICS AUTHOR COUNTRY TITLE ICTP SERIAL NUMBER . S.K1 . Chakrabarti IND Studying shock moden i s l astrophysical flows [2] 2. B.V. Ivanov BUL Blac kheterotie th hole d san c string [3] . B.V3 . Ivanov BUL Kasner-type black holes [4] 4. V.V. Skalozub Study of W-boson in a magnetic field based upon both [5] V.S. Vanyashin SSR mass operator and effective potential 5. O. F. Dayi TÜR d = 3 Chern-Simons action, supergravity and [6] quantization 6. B.A. Bambah Effective action r gaugfo s e theories with Chern-Simon] [9 s C. Mukku IND terms - I . A.A7 . Pankov SSR On the possibility of studying extra gauge Z'-boson [20] I.S. Satsunkevich effects in e+e' -> ß+ß~ at TRISTAN 8. S.D. Rindani IND Quantum consistenc gauge-invariana f o y t theor a [35 f o y ] massive spin-3/2 particle interacting with external fields 9. D. Birmingham UK Superfield formulatio f Chern-Simonno s [38] M. Rakowski UK supersymmetry o It i Ke . 10 JPN Tachyons in N = 2 superconformai models and [41] topological instability of defining polynomial of Calabi-Yau manifolds 11. E.D. Kagramanov The covariant linear oscillato generalized an r d [42] R.M. Mir-Kasimov SSR realization of the dynamical SU(1,1) symmetry algebra Sh.M. Nagiyev 12. E.D. Kagramanov Ca trea e confinemene nw th t pura s ea t relativistic [43] R.M. Mir-Kasimov SSR effect? Sh.M. Nagiyev . GianCarl13 o Ghirardi ITA Markov processe Hubern si t spac continuoud ean s [44] Philip Pearle spontaneous localization of systems of identical particles Alberto Rimini 14. O.F. Dayi TUgeneraA R l actio r topologicanfo l quantum field theories [47] 86 15. S.N. Dolgikh Supergrassmannians, super i-functions and strings [48] A.SR .SS Schwarz N JP o It i Ke . 16 Renormalization group flows in N = 2 superconformai [52] models 1 7. E. Abdalla BRA SL(2,R) current algebr two-dimensionan ai l conformai [56] M.C.BA BR . Abdalla quantum gravity A BR A. Zadra 18. Van I. Kogan SSR The off-shell closed strings as the topological open [65] membranes - dynamical transmutation of world sheet dimension 19. S.C. Mishra IND Construction of two dimensional super potentials for [68] classical super systems 20. M.J. Duff A stable membrane vacuum with a discrete spectrum [71] C.N. Pope R TU . SezgiE n 21. E. Sezgin TUR Chern-Simons gauge theorie f symplectio s c super- [72] E. Sokatchev BUL diffeomorphisms 22. A.S. Schwarz SSR Lefschetz trace formula and BRST [73] 23. Ya.l. Kogan SSR On the interactions of charged particles with cosmic [74] K.G. Selivanov string 24. S.C. Mishra IND Construction of second constant of motion for two- [80] Veena Mishra dimensional classical super systems L . BU V.K25 . Dobrev Modular invariants for theta-functions with [84] A.H. Ganchev characteristics and the twisted N = 2 superconformai and SU(2) Kac-Moody algebras 26. A.O. Barut TUR E = f.o> [85] 27. S.C. Mishra IND Integrable classical system highen i s r dimensions [88] D IN . ParasharD 28. A.A. Tseytlin SSR Sigma models and renormalization of string loops [90] A IR . ModarreM . 29 s ] 1 [9 Presen effecC EM t t statue th f o s K. Ghafoori-Tabrizi IRA 30. V. Novozhilov SSR Effectiv chiraD eQC l Lagrangia r pion nvectod fo san r [95] mesons and hidden local symmetry L . BU V.K31 . Dobrev Classification of modular invariant partition functions [98] A.H. Ganchev for the twisted N = 2 superconformai algebra, twisted SU(2) Kac-Moody algebra and D2k parafermions . L.M32 . L SokolowskPO i Are gravitons window o highet s r dimensions? [99] . L.M33 . L SokolowskPO i Physical version f non-lineao s r gravity theorie d [100an s ] positivit f energo y y 87 34. GianCarlo Ghirardi ITA A continuous spontaneous reduction model involving [105] Renata Grassi gravity Alberto Rimini . Mia35 i oL Modular transformations of conformai blocks in WZW [106] Ming Yu CHA model Riemann so n surface f higheso r genus 36. A.R. Its Correlation radiu r one-dimensionafo s l impenetrable [107] A.G. Izergin SSR bosons V.E. Korepin . SezgiE . n37 TUR Gauge theories of infinite-dimensional Hamiltonian [108] superalgebras "Application to string membranes and higher spin field theories" . Mankoc-BorstniN . 38 k YUG The size of systems and massless collective states [109] 39. Simon Davis domaie th n f strinO no UKg perturbation theory [112] . K.-H40 . Lotze GCR Productio f photonno anisotropin i s c spacetimes [114] . K.-H41 . Lotze GCR Simultaneous creation of electron-positron pairs and [115] photons in Robertson-Walker universes with statistically bounded expansion 42. Omer F. Dayi gaugn TUO Re fixin quantizatiod gan f constraineno d [118] Hamiltonian systems . A.O43 . Barut TUR Excited state f Zitterbeweguno s g [125] . BergshoefE . 44 f New spacetime superalgebra theid san r Kac-Moody [126] E. Sezgin TUR extension 45. E. Bershoeff Stress-tensor commutators and Schwinger terms in [127] . SezgiE n TUR singleton theories Y. Tanii 46. I.H. Duru TUR Casimir force between two Aharonov-Bohm selenoids[1 28] o It i Ke . 47 JPN Milnor monodrom f singularitieo y chirad san l [129] primar superconforma2 y= fieldN f o s i field theories . D.B48 . Cüne USA Searc r protohfo n deca supernovd yan a [137] neutrino bursts wit lunaha r base neutron detector . BodyulkoA . 49 v Composite scalar mesons in QCD [141] V. Novozhilov SSR 50. V.K. Dobrev BUL Multiplet classification of highest weight modules [142] over quantum universal enveloping algebras: The Uq(sJ?(3,C)) example 51. R.K. Kaul IND Level-one SU(3) Wess-Zumino model on higher genus [145] R.P. Malik Riemann surfaces N. Behra . A.O52 . Barut TUR Reflection, transmissio spid nan n rotatio f Dirano c [148] M. Bozic YUG neutrino magnetin i s c fields 88 53. Asghar Qadir PAK On quantum effects nea blaca r k hole singularity [153] Azad A. Siddiqui PAK R TU . A.O54 . Barut The electron-positron system at short distances [154] R TU . A.O55 . Barut Predictio tightlw ne yf no bound-state f Ho s 2(D 2) [155] + + and "cold fusion'-experiments. 56. A.Ch. Ganchev BUL Uq(sj?(2)) invariant operator minimad san l theories: [158] V.B. Petkova Fusion matrices L MA . Ros 57 h yTe Vortex-lik string-likd an e e1 solution2+ e [160th f so ] dimensional SU(2) Yang-Mills theory wite hth Chern-Simons term 58. Rosy Teh MAL Solutions of the classical SU(2) Yang-Mills theory in [161] 1 dimension2+ s witChern-Simone hth s term: Ansätze building 59. Zhong-Qi Ma CHA Quantum sj?(2) enveloping algebra and representations[162] of braid group 60. I.A. Batalin Generalized canonical quantizatio f dynamicano l [167] E.S. Fradkin SSR systems with constraints and curved phase space T.E. Fradkina SSR 61. E.S. Fradkin SSR Solution of a class of conformai quantum field theory [168] M.Ya. Palchik models in D-dimensional space 62. E.S. Fradkin SSR Cubic interactio conforman i n i theor f integeo y r [173] V.Ya. Linetsky higher-spin fields in four dimensional space-time . C.N63 . Pope A generalized Virasoro algebra for the type II A [1 74] R TU E. Sezgin superstring R . A.ASS 64 . Pankov Polarization asymmetrie f largo s t leptonP e t sa [178] I.S. Satsunkevich hadron colliders in Eg theories R TU . A.O65 . Barul ] 79 1 Pai[ r productio electrin a n ni c fiela n di I.H. Duru TUR time-dependent gauge 66. Zhong-Qi Ma CHA Representation of braid group obtained from quantum [180] sj?(3) enveloping algebra . CuddeforP . 67 d mase th ligho st n O t ratio f dwaro s f spheroidal [184] J.C. Miller UK galaxies 68. M. Kachkachi MOR supergravit2 N= S superspacn yi BR e th [185 d ean ] T. Lhallabi MOR symmetry R TU . A.O69 . Barut The Einstein A-coefficien f spontaneouo t s emission: [186] Y.I. Salamin WEB A relativistic calculatio e Heisenberth n i n g representation 70. Alejandro Cabo Dirac'n O s conjectur r Hamiltoniaefo n systems [190] D. Louis-Martinez CUB with first and second class constraints 89 71. E.H. Saldi MOR Integral representation of the N = 4 conformai [191] M. Zakkari anomaly 72. Piotr A. Raczka Renormalization scheme dependence th n ei [196] R. Raczka POL next-to-next leadin e higg th ordeh d an r energy behaviouD QC n i r i ZhongyuaL . 73 n CHA Disturbance structures and its magnetic field [198] feature plasmn i s a comet tail . L.M74 . Sokolowski POL Propagation of electromagnetic waves in [199] Marco Litterio multidimensional homogeneous cosmologies Franco Occhionero i ZhongyuaL . 75 n CHA A storage process of the magnetic energy [200] results from the unsteady plasma flow field in the space active regions and stellar atmosphere 76. M.A. Vasiliev SSR Dynamic f masslesso s higher secone spinth n si d [201] order in curvatures . Shi-KunWan77 g Superconformai algebr f meromorphiao c vector fields[207] Kai-WenXu CHA with three poles on super-Riemann sphere 78. Zhong-Qi Ma CHA New link polynomial obtained from octet [208] representation of quantum sj?(3) enveloping algebra 79. S.N. Dolgikh Supermoduli spaces [210] A.A. Rosly A.S. Schwarz SSR . A.O80 . Barut TUR QED base self-energyn do relativistie Th : c [211] Y.l. Salamin WEB 2S|/ » 1S|/y 2- 1 deca 2+ y rate f hydrogenlikso e atoms . ChakrabartS . 81 y IND Meson masses and constituent quarks [212] 82. N. Chair ALG A less constrained (2,0) super Yang-Mills model [213] J.A. Helayel-Neto A. William Smith . ChakrabartS . 83 y IND Heavy meson spectroscopy [214] 84. ShuiWang CHA A mechanism for the formation of knots, kinks and [218] disconnection events in the plasma tail of comets 85. Ya'qub Anini JOR Quantum cosmological origin of large scale structures[21 9] of the Universe 86. Yi-Peng Jing CHA Void distributions in AGO cluster catalogue [221] 87. Yi-Peng Jing CHA A comparison of void distributions in Abell cluster [222] catalogue with numerical simulations 88. Yi-Peng Jing CHA Higher-order superclustering in the Ostriker [223] explosion scenario - I: Three-point correlation functions of clusters in the constant and power-law models 90 89. Kei Ito JPN Phase diagram of N = 2 superconformai field theories [224] and bifurcation sets in catastrophe theory 90. Edward Malec POL Trapped surfaces in monopole-like Cauchy data of [225] Piotr Koc Einstein-Yang-Mills-Higgs equations . Asho91 k Goyal IND Neutrino emissivit f strango y e quark matter [230] J.D. Anand . SoboutY . 92 i IRA A variational principle for non-equilibrium ensembles [231 93. T. Lhallabi MOR Quantization of two dimensional (4,0) [232] supersymmetric theories . Hoan4 9 g Ngoc Long VTN On the creation of gravitational wave by photon in [233] Le Khac Huong external electromagnetic field . M.P95 . Dabrowski POL Horizon proble mcosmologican i l models with [234] J. Stelmach POL non-zero A term R. Byrka 96. De-HaiZhang superconforma2 Th= eN i algebra hyperelliptin so c [235] Chao-Shang Huang CHA surfaces and their Coulomb gas realization 97. I.E. Fradkina SSR Gauge quantum models of massive electrodynamics, [237] massive Yang-Mills theor d massivan y e superparticle 0 1 = D n i 1 N= . D.V98 . Shirkov praisSSn I R f quantu eo m fields [243] q Hu . M . 99 NIR Point particle with extrinsic curvature [247] P.I. Obiakor S. Singh 100. T. Christodoulakis GFE Uniqueness of closure of the constraint algebra for [248] . KorfiatiE s quantum gravity 101. Manu Mathur IND Supersymmetric quantum mechanics with singular [250] H.S. Sharatchandra potentials 1 02. A. Baiquni INS Form factor f compositso e quantum system e th [251 n i s ] O|-|(4,2 5 Oo(4,2) ) dynamical group formalism 1 03. A. Baiquni infinitn A INSe component wave equation which exhibits [252] spin-orbit Lame splittinth d b gshifan t 104. HaHuyBang The renormalization and the asymptotically free [257] Hoang Ngoc Long VTN behaviou extendee th f o r d Wess-Zumino models . BirminghaD . 105 m UK Geometr quantizatiod yan f topologicano l gauge [258] Matthias Blau theories G. Thompson 1 06. I.G. Koh ROK Exponential quantum groups [259] Z.Q. Ma 107. S. Jadach Multiple photon emission and b quark asymmetries [260] B.F.L Ward USA 91 108. B.F.L Ward USA Theoretical uncertainties in semi-leptonic B-decay [261] 109. A.S. Schwarz SSR Universal moduli space and string theory [262] D SU 110EI-TahiM A . r A Lagrangian dependent metric space [264] 111. MujahiK d PA Kamran Dirataciture th - c n genius [265] 112. Chao Hsi Chang A dynamical mechanism for the hairpin diagram [266] A CH Xin-Hen o gQu A CH Xue Qia i nL 113. Yuri V. Novozhilov On Einsteinization of background curved space in the [280] D.V. R VassilevicSS h induced quantum gravity A IT . leng114R .o Quantum gravity corrections from multiloop [282] superstring scattering amplitudes 115. S. Randjbar-Daemi IRA Chern-Simons superconductivity at finite [283] Abdus Salam PAK temperature E NZ . StrathdeJ e 1 . 16 D.V . R VassilevicSS h clasw Af ne compactificatioso e th f no [284] eleven-dimensional supermembrane R 117TU . Ome . DayF r i simplm 2 Quantizatio = e N supergravit e th f no n i y [286] 1 + 2 d= 118. Ichiro Oda JPN Linking numbers and variational method [287] Shigeaki YahikozawN JP a N JP 1 . 19 Ichir a oOd Topologically massive non-Abelian theorie n i s [288] Shigeaki YahikozawN JP a higher dimensions 120. Ergin Sezgin TUR A note on gauge fixing in theories of extended objects[291] 121. Chao-ShanA g CH Huang Ward identitie differentiad san l equation r supesfo r [292] Kai-Wen Xu CHA characters of N = 1 super Kac-Moody algebras on super- Zhi-YonA CH g Zhao torus 122. HoangN NgoVT c Long photoproductioOe nth f gravitonno spinon so r [293] LeN KhaVT c Huong particles I CH . 123UrrutiLF . a Local supersymmetry in non-relativistic systems [295] J. Zanelli CHI 124. N. Mansour EG/ non-yrase Studth f o y t state 152n i s Dy around 22f, [297] the region into which the y-rays drain the super- deformed band 125. A.L. Marrakchi MOR String dynamic curven i s d space-time revisited [298] L.P. Singh IND 126.R Ya'quJO b Anini The initial quantum state of matter perturbations [307] about a de Sitter background 127. UlvR i YurtseveTU r Test field compacn so t spacetimes: Problems, some [308] partial results and speculations 92 128. Pre . SrivastavmP A BR a BRST-BFV quantization of chiral Schwinger model [312] 129R . A.ASS . Pankov Heavy quarkonium production clos neutrao et l gauge [313] EG bosons in e+e" annihilation 130. Yi-HongGao CHA Fusion algebr fusind aan g matrices [316] Miao Li Minu gY CHA 131. Sicong Jing CHA Berry's phas cosen ei t pure gauge theories [318] 132. S.N. Manida SSR Construction of mixed fermionic-bosonic string [319] model foun si r dimensions 133. V.S. Popov SSR Strong-field Stark effect: Perturbation theor d [320an y ] V.D. Mur 1/n expansion A.V. Sergeev V.M. Weinberg 134. V.M. Belyaev SSR Higher loop contribution effectivn a r sfo e potential [321] for gauge theory at high temperature 135. Hans-Jürgen Pohle DDR Approximate solutions of Friedmannian [322] minisuperspace models represente seriea y df b so MacDonald's functions 136. V.S. Popov SSR 1/N expansion and scaling for the Stark effect in [325] V.D. Mur Rydberg atoms A.V. Sergeev 137. A.L Marrakchi MOR Conserved conformai current curven i s d spacetime [328] R NI q Hu . 138M . Covariant quantization of Siegel's superparticle [330] 139. Marco Roncadelli ITA New formulatio f quantuno m mechanics [336] 140. Marco Roncadelli ITA New stochastic description of quantum systems [337] R SS 141 . ChekhoL . v p-adie Th c string compactifie torua n dso [338] Yu. Zinoviev 142. W. Barreto VEN Radiating spheres in general relativity with a mixed [339] N VE L.A. Nunez transport energy flow 143. L. Herrera Luminosity evolutioe profileth d f san shocn o k [340] La. Nufiez VEN wave generan i s l relativistic radiating spheres 144. Caren Marzban IRA Remarks on the Landau-Ginzburg potential and [344] RG flow for SU(2)-coset models N 145JP . IchiroOda Topological Higgs mechanism with ordinary Higgs [357] Shigeaki Yahikozawa JPN mechanism 146. Marek A. Abramowicz POL Workshop on relativistic astrophysics [362] 147. A.O. Barut TUR QE non-simplDn i y convected regions [363] I.H. Duru TUR 93 148. A.O. Barut TUR The classical relativistic two-body problem with [364] Coskun Önem TUR spiself-interactiond an n s Nuri Llnal GYP 149. M. Huq NIR Covariant quantization of spinning superparticles [365] 150. B. Bozic YUG A system study of strongly localized almost massless[369] N. Mankoc-Borstnik YUG systems 151. A.O. Barut TUR Membranes, strings, extended elementary particles [372] as singularities of fields 152. E.H. Saidi Superconformai geometry from the Grassmannian [378] . ZakkarM i harmonid MOan RSU(24 = c )analyticitieN e Th : II s- conformai case 153. A.M. Bokhari PAK A comment on anisotropic spheres admitting one [379] parameter group of conformai motions 154 . LeikA . e GCR QED corrected extra Z boson effects at e+e" colliders[380] T. Riemann . SachwitM z 155. T.M. Aliev SSR Single leptoquar extrd an ka neutral gauge Z-boson [381] A.A. Bayramov SSR on future e+e" colliders 156. T.M. Aliev SSR Decays D ^ Kev, D -» K* ev, D -* ev in QCD sum rules [382] A.A. Ovchinnikov method V.A. Slobodenyuk . Swe157 e Ping Chia L RadiativMA e y decabottoe th [384WW f yo me th quar d kan ] coupling 158. V.O. Soloviev SSR Bimetric gravity: BRST-invariance and space-time [386] diffeomorphisms 159. V.B. Braginsky Propagation of electromagnetic radiation in a random [392] N.S. Kardashev fiel f gravitationao d l wave d spacan s e radio interferometry I.D. Novikov SSR 160. Shi-KunWang Superconformai algebr centrad aan l extensio f no [399] Kai-Weu nX CHA meromorphic vector fields with multipole n supero s - Riemann sphere 161. T.M. Aliev SSR Lookin r supersymmetrgfo n rari y e B-meson decays [404] M.I. Dobroliubov . RouhanS . 162 i IRA Measurement of gravitational acceleration of [405] antimatter 163. Noureddine Chair ALG Tetrahedra and polynomial equations in topological [408] Chuan-Jie Zhu CHA field theory 164. S.F. Sultanov SSR Prospects of the future ep and yp colliders, [409] luminosity and physics 94 165. Han-Ying Quo CHA Beltrami algebra and symmetry of Beltrami equation [412] Riemann o Jian-Min surfacen Shes n Shi-Kun Wang Kai-Wen Xu CHA 166. Ikuo Senda JPN Comment on the phenomenology of the almost [415] standard model 167. Caren Marzban IRA Morse theory applied to N = 1 and 2 superconformai [416] theories 168. Kei Ito JPN Trajectories of renormalization group flows on the [423] superconforma2 = phas N f eo i field theories N TopologJP f singularitieyo phasd san e o 2 diagra[424It = i N Ke f m ]o . 169 superconformai field theories theore ideaw th ne f quantun s i yo d an d mOl . G.G1A 70 IT . Ghirard[425i ] . RiminA i measurement 171. Noureddine Mohammedi ALG On the unitarity of string propagation on SU(1,1) [429] 172. Jose A. Helayel-Neto Quantum gravity in two dimensions and the SL(2,R) [431] Susan Mokhtari IRA current algebra A.W. Smith 95 PREPRINTS AND INTERNAL REPORTS IN CONDENSED MATTER PHYSICS AUTHOR COUNTRY TITLE ICTP SERIAL NUMBER 1. A.G. Saif EGY Pinning of curved flux lines on the boundary [11] between two phases of high temperature superconductors 2. Zhang Li-yuan CHA A model of the isotope effect of the oxide [21] superconductor 3. M.-E. Boudh-hir TUN Dipolar fluid wall systems. Beyon image dth e [24] potential 4. M.-E. Boudh-hir TUN Pair distribution functio polan i n r fluid-hard wall [25] systems. Long range components 5. M.-E. Boudh-hir TUN New developments for localized adsorption [26] 6. Ya.M. Blanter The anomalies of the longitudinal magnetothermo- [29] A.V. Pantsulaya electric power of metal in the vicinity of electronic A.A. Varlamov SSR topological transition 7. M.P. Tosi IT A Freezing of Coulomb liquids [37] 8. Zhang Li-yuan CHA e freOth ne carrier-negativ centeU e r interacting [39] model for the high Tc oxide superconductor A IT . RoncadellM . 9 i Langevin formulatio f quantuno m dynamics [40] / EG . ShehatLN . 10 a The modified Ginzburg-Landau theor r anisotropifo y c [45] high temperature superconductors 11. A.G. Saif EGY Macroscopic persistent currents in high temperature [49] ceramic superconductors 12. Z. Badirkhan On condensation driven by electrostatic interactions [60] A IT M.P. Tosi in macroionic solutions 13. M.E. Kassem EGY Thermal expansio f LATGno S crystals [62] A.E. Hamed Y EG S.H. Kandil J. Stankowska 14. K.P. Thakur IND Mechanic f irono s stabilits it , phasd an y e [64] O.P. Thakur transformation 15. M.-E. Boudh-hir TUN Structure properties of confined systems. Hard [69] spheres between ideal walls 16. A.M. EI-Khatib Thermodynamic studieferroelectrie th n o s c phase [75] s M.E. Kassem EGY transitio neutron i n n irradiated (Lixki-X4 )° 2 E.A. Ammar crystals at high temperature M.M. Denton 96 LunW gC. . 17 CHA Fractal dimensio e fractureth f no d surfac f materials[76eo ] S.Z. Zhang . Wan18 i gL Electron theor f lono y g wavelength concentration [77] M.P. Tosi ITA fluctuations in liquid metal alloys 1 9. Arun S. Wagh M SilicatJA e bonded ceramic f latériteo s s [79] Victor Douse . Simo20 . OlabanjnO i NIR Nigerian coal analysis by PIXE and HEBS techniques [82] 21. Simon O. Olabanji NIR PIXE analysi f museuso m soapstone sculptures [83] V.O. Olarewaju from Esie, South West Nigeria O. Onabajo . ChenHa22 o CHA Further studies on possible coexistence of anti- [89] Su Zhao-Bin CHA ferromagnetis superconductivitd man D 2 n i y YuLu CHA Heisenberg model . W.C23 n .Fö MAL A 19-state R-matrix investigatio f resonanceo n s [96] in e"-He scattering 24. W.C. Fön MAL A 19-state R-matrix calculatio e electroth f o n n photon [97] K.A. Berrington coincidence parameters A. and \%\ for the electron A.E. Kingston excitation of 11s -> 33>1p in helium at 2.96 eV 25. V.P. Kovrov Irreversibilit d self-organizatioan y n spii n n [101] A.M. Kurbatov SSR glasses - I: Origin of irreversibility in spin glasses . V.P26 . Kovrov Irreversibility and self-organization in spin [102] A.M. Kurbatov SSR glasse : IrreversibilitII - s problee th d f mo an y configuration averaging . Rexhe27 p Mejdani ALB A lattice gas model for enzyme kinetics (A correlated[1 04] Walks theor variationad an y l procedures) 28. Decheng Tian CHA Fractal dimension of a quasi-two-dimensional [113] Gongwen Peng CHA Sierpinski gasket as a conductor . C.A29 . Majid PAK Strain induced amorphization of aluminium by [121] manganese implantation 30. J.C. Granada COL Magnetoplasma oscillations of the wave-guided [132] A.M. Kosevich type in semiconductor superlattices Yu.A. Kosevich . C.A31 . Majid ] 47 1 [ structure PAth Kn o f eo e Studie effece ag th f o n t so polycrystalline . BadirkhaZ . 32 n Statistical mechanical models for liquid and [156] A. Ferrante amorphous structur covalentln ei y bonded systems . RoverM e M.P. Tosi ITA 33. Z. Akdeniz TUR Local coordinatio f polyvalenno t metal ion molten si n [159] M.P. Tosi ITA halide mixtures 97 . H.M34 . Miesenböck AUS Electron correlations and dielectric screening in a [197J M.P. Tosi ITA layered electron gas . BenyousseA . 35 f Finite cluster renormalization and new two step [226] A. El Kenz MOR renormalization group for Ising model . I.P36 . Dzyub Non-adiabatic effectelectroe th n phonod i s nan n [227] Yu.E. Zerov SSR spectra of a Peierls insulator 37. K. Nuroh dynamie th n GHO cA polarizabilit f atomo y s [228] E. Zaremba . BenmounM . 38 a AL dynamice Gth n O f polymeo s r mixture solution i s n [236] A usinRP e gth 39. B.K. Ghosh IND Acoustic wave emission by two dimensional [238] T.M. Mishonov SSR plasmons . ZieschP . e40 GDR The interface stress theorem and Hellmann-Feynman [239] R. Kaschner relations for bijellic systems . NafarN i IRA 41. C.W. Lung CHA Dislocation annihilation mechanism for the formation [240] of dislocation free zone at a crack tip . H.M42 . Miesenböch AUS Exchang correlatiod ean n effectVisschere th n i s - [241] M.P. Tosi ITA Falicov model for metal intercalated graphite 43. A.R. Hassan EGY Three-photon interband proces solidn i s s [242] L Kuzemsk44A. . y SSR Modified tight-binding approximatio d electronan n - [245] A. Zherno.P v phonon spectral functio r transitionfo n metals 45. Indrani Bose IND Exact groun d excitean d d stateantiferron a f o s - [246] magnetic quantum spin model 46. Z. Akdeniz TUR Ionic equilibrium between octahedral and tetrahedral [249] M.P. Tosi ITA complexes in liquid aluminium-sodium fluoride mixtures . BenmounM . 47 a ALG Generalized random phase approximatio r multinfo - [256] component polymer systems 48. M.P. Das IND What influences order parameters across the [270] superconducting phase boundary? . AsokamanR . 49 i IND Pressure induced superconductivit elementan i y l [271] G. Subramoniam solids S. Sankaralingam S. Pauline R. Umamaheswari 50. B. Talukdar IND Continuum states of the Klein-Gordon equation for [277] A. Yunus BCD vecto d scalaan r r interactions M.R. Amin BCD 51. C.L.P. Lambruschini PER Cooperative effect physicalla n i s y adsorbed [289] monolayer of two-level atoms 98 52. F.A.F. Osorio Resonant donor-impurity magnetopolar effec in t [294] N.Z. Maialle semiconductor quantum wells P. Hipolito BRA 53. Liu Hanping CHA interpretatiow Ane feature maseO th Si f nf o eo r [299] Sun Jin spectra associated with M-type star . Trinio-RadjB . 54 a Inverse photoemission from electronic surface [310] G YU . SunjiM c states: Intensity angula polarizatiod an r n dependence 55. Nan-Xian Chen CHA A modified Möbius inverse formula and its [314] applications in physics 56. LN. Shehata EGY Specific heat and critical fluctuations in anisotropic [315] high-Tc oxide superconductors . M.S57 . EI-DessoukY EG i Surface photovoltage spectroscopy of real n-type [317] S.B. EI-Guiziri GaAs(110) surfaces F.Z. Gobrial 58. L. Knoll Rigorous QED-proof of the Langevin equations for [323] W. Vogel high-Q cavity fields R D.-GDD . Welsch 59. Antimo Angelucci ITA Low temperature actio r quantunfo m [327] antiferromagnets on a triangular lattice . F.C60 A . IT Matacotta Growth and properties of M2-xCexCuO4-d single [332] . MoraleL Garza X l e sME d a crystals M. Nevriva CZE G. Nardin L. Randaccio E. Zangrando K . S.APA 61 . Siddiqi On the substitution of SR ions at Y sites in [333] K. Sreedhar IND D. Drobac YUG I CH . InfantC e F.C. A IT Matacotta D IN . GangulP y 62. K.A. Rustamov SSR On the transformation of invariance and exact [334] solutions of the Rabi model 63. K. lyakutti IND The bound states of the Schrödinger equation with the [335] R. Palaniyandi numericaA - potentia2 Bx A/x= l+ solutio2V l n 64. M.C. Donnamaria Information entrop Thomas-Fermd an y i screening [346] G AR A.N. Proto functions A.M. Meson 65. AliagJ . a Thermodynamic f squeezeso d Kanaie stateth r sfo - [347] G. Crespo Caldirola Hamiltonian A.N. Proto ARG 99 D IN . P.K66 . Thakur Multifractal analysis of electronic transitions in a [350] L BE F. Brouers famil f quasiperiodio y c potentials G. Ananthakrishna IND 67. P. K. Tahkur IND Resistanc pseudorandoa o t e edu m potential with [351] N. Kumar IND slowly varying period . Zhifan68 n gLi CHA Scaling of the first-passage time of biased [353] Ruibao oTa CHA diffusion on hierarchical comb structures 69 A. Brezini ALG Metal non-metal transitions in doped semiconductors [355] 70. Nguyen Nhat Khanh VTN Spontaneous magnetization of thin films of [356] ordere disordered dan d alloy f transitioo s n metals 71. T.M.A. Khajil JOR Thermodynamic f simplo s e liquid metals calculated [361] M. Tomak TUR using an analytic pair potential 72. Zhifang Lin CHA Quantum Ising mode hierarchican o l l structures [366] Ruibao oTa CHA . U.C73 . Granada COL Coupled magnetoplasmon-phonon modesurface[370e th t sa ] of a semi-infinite semiconductor superlattice 74. Tian-Lun Chen CHA The first-order phase transition for six-state Potts [374] Wu-qun Huang mode 2-dimensionan o l l random triangle lattice Yun-wen Xi i 75. P. Cardenas SSR Hydrogen chemisorptio tight-bindina n no g solid: [375] Influence of partial occupation of the impurity level of the electron characteristics 76. Zou Jian CHA Corporative and coherent effect of martensite [376] transformation 77. A. Brezini ALG Pulsed laser cleaning of antimony single crystal [377] > surfac1 11 e< 78. N.M. Guseinov e polaroSSTh R n effect relaxatiod an s f non-equilbriuno m [387] S.M. Seyid-Rzayeva electron e quasi-two-dimensionath n i s l systems K.A. Rustamov SSR . Hild79 . CerdeiraA a BRA Dissipative quantum maps [388] R. Ramaswamy 80. H.B. Pang CHA How to interpret the validity of the single [389] . XianT g band model? Z.B. Su CHA YuLu CHA 81 L loff. e Superconductivity in mixed boson-fermion systems [390] A.I. Larkin Yu.N. Ovchinnikov YuLu CHA 100 . Z.B82 u .S CHA Self-consistent hole motio spid nan n excitations [391] i L . Y.M iquantua n m anti-ferromagnet W.Y. Lai YuLu CHA 83. Hilda A. Cerdeira BRA Quantum chao dissipationd san : Lyapunov exponents [394] R. Ramaswamy A.O. Caldeira 84. Wei-Guo Feng reaw CHlNe spacA e correlated-basis-functions approach [400] Hong-Wei Wang electroe th r fo n correlation semiconductoe th f o s r Xiang Wu inversion layer 85. Wei-Guo Feng CHA Effec f retardatioo t e reflectancth n no e propertie f [401o s ] He-Sheno gYa the metallic Fibonacci quasi-superlattice Xiang Wu 86. J. Kohanoff A model for the roughening of reconstructed [403] G. Jug surfaces: Finite-size stud phasd an y e diagram E. Tosatti ITA . D.I87 . Pushkarov BUL General nonlinear theory of quasiparticle dynamics [413] d kinetican n crystali s s 88. R. Taranko POL On hydrogen chemisorptio f metalsno electroe Th : n [417] R. Cardenas SSR correlation effects E. Taranko POL V.K. Fedyanin SSR 89. S.K. Lai MAL Thermodynamics and structure of liquid alkali metals [418] . AkinladO e NIR from the charged-hard-sphere reference fluid M.P. Tosi ITA . T.M90 . Haridasan IND Dynamical appraisa anisotropie th f o l c Deybe-Waller [419] S. Sathyamurthy factors in graphite lattice 91. S.J. Hu MAL Failure analysis of leakage current in plastic [421] F.T. Cheang encapsulated packages . D.V92 . Khveshchenko SSR Pairing with fractional angular momentum and [426] Y.l. Kogan "spinorp ga " 93. D.V. Khveshchenko SSR Parity violatio superconductivitd an n dopen i y d Mott [427] Y.l. Kogan insulators 101 PREPRINTS AND INTERNAL REPORTS IN MATHEMATICS AUTHOR COUNTRY TITLE ICTP SERIAL NUMBER 1. Gu Xinshen CHA Multiple pole solution AKNe th ] f Sso [1 hierarchy s reductionit d an s . Abdulla2 h Shidfar IRA An inverse proble non-lineaa r mfo r porou] s [7 media Kamran Mohseni equation 3. Damian H. Zanette AR hydrodynamie Gth n O c approac Schrödingee th o ht r [10] equation 4. V.A. Arkadiev Inverse scattering transform method and soliton [12] A.K. Pogrebkov solutions for Davey-Stewartson II equation M.C. Polivanov SSR . 5 Huang Xuanguo CHA Compact hypersurface in n+1 dimensional ellipsoid [13] with prescribed mean curvature 6. Huang Xuanguo CHA Compact surfac dimensiona3 n i e l ellipsoid with [22] prescribed mean curvature - II . A.R7 . Bestman NIR On the thermal stability of flow of a radiating two- [30] component plasm poroua an i s medium betweeo ntw rotating cylinders 8. A.R. Bestman NIR Radiativ ethermae effecth n o t l instabilit] 1 [3 f a flo o yn wi porous medium between two rotating cylinders 9. A.R. Bestman NIR Natural convection boundary layer with suction and [32] mass transfer in a porous medium . 1A.R0 . Bestman NIR Modelling of the effects of the equatorial electrojet on [33] its environment . A.R11 . Bestman NIR A model for the simulation of the ozone budget in the [34] atmosphere under athropogenic perturbation 12. Yunmei Chen CHA Blow-up and global existence for heat flows of [46] Wei-Yue Ding harmonic maps . BrambilF . z 13 aPa MEX Continuit f conditionao y l expectations [53] Alberto Alonso 14. S. Shahshahani automorphisme th n O IRA f foliationso s define compley db x [54] linear vector fields . M.V15 . Saveliev SSR Continuum analogues of contragredient Lie algebras [55] A.M. Vershik . 16 Duon g Mine hDu VTN Mixed singular linear elliptic equations [57] Stephan Luckhaus 102 . Zhan17 g Jingzhong CH wito Ad he onlw Wha n paiya f rustca o tr y compasses? [58] Yang Lu Hou Xiaoreng 1 8. José F. Carinena SPA Theor f singulayo r Lagrangians [61] 19. Yunmei Chen Le flot d'applications harmoniques d'une variété [67] Roberta Musina ITA compact variéte un r boréà e su d 20. M.S. Lubuma ZAI Une generalisation des espaces Pp [70] n So h n Ma . Vg 21 uon VTN Enveloping algebr clasa r f H-algebraaso fo s [78] 22. C.E. Chidume NIR An approximation metho r non-lineadfo r integral [86] Chika Moore equation f Hammersteiso n type . C.E23 . Chidume NIR Existence, uniquenes approximatiod san solutioa f no n [87] S.J. Aneke for a K-positive definite operator equation . I.A24 . Khan IND On some integral relations involvin generalizega d [93] R. Prasad hypergeometric polynomial . A.R25 . Bestman NIR Unsteady hydromagnetic a radiatinfloa f n [94wi o s gga ] vertical channel with axial temperature variation 26. Shi Ji-Huai CHA The Bergman space Bloce th , hplurie spacth -d ean [110] harmonic conjugates in the unit ball of C n 27. Shi Ji-Huai CHA DP spaces on bounded symmetric domains of C [111] n 28. G. Zafindratafa MAG A surve conforman o y i flatnes d quasi-umbilicitan s y [116] of submanifolds 29. G. Zafindratafa MAG A few remarks on anti-invariant quasi-umbilical [117] submanifolds Danae. A . e30 IRA Multigrid techniques with non-standard coarsening [119] and group relaxation methods 31. A.R. Its Temperature correlator e impenetrablth f o s e Bose [120] A.G. Izergin SSR gas as an integrable system V.E. Korepin 32. C.E. Chidume NIR Iterative method r non-lineafo s r set-valued [130] operators of the monotone type with applications to operator equations 33. Bonaventure Loo MAL The space of harmonic maps of S2 into S4 [134] 34. A.R. Its Long-distance asymptotic f temperaturo s e [139] A.G. Izergin SSR correlators of the impenetrable Bose gas V.E. Korepin 35. Duong Minh Due VTN Solvabilit u [140 Ke Dn i y = 1 equatio e >c 2 th (n + f ] o )u n-A . Zhan36 g Jingzhong CHA The induction on a continuous variable [157] 103 . AhsaJ . n37 PAK On the pure radical in semigroups with zero [177] A.B. Thaheem PAK . Vichia38 n Ladhakosol THA Dependence of arithmetic functions and differential- [181] transcendenc f Dirichleeo t series 39. M. Aslam A note on p-semisimple BC1-algebras [183] A.B. Thaheem PAK 40. Shi Ji-Huai CHA A new characterization of Bloch function in the unit [188] ball of ID" 41. Shi Ji-Huai CHA Random power serieunie th n t C n balsi f o l [189] . Gang42 a Shrestha NEsimplA P e applicatio f probabilitno y e modeth r [192fo l ] mean age at marriage 43. V.P. Onyango-Otieno KEN Differential operators associated with Gegenbauer [193] polynomials - III: The regular case 44. S. Asghar PAK Acoustic diffraction due a cylindrical impulse [194] M. Ayub 45. J. Ahsan PAK Minimal prime ideals in semigroups without nilpotent [195] elements 46. B. Djafari Rouhani IRA A non-linear ergodic theorem and application to a [203] theorem of A. Pazy 47. B. Djafari Rouhani convergence notth A IRn eAo numericaa f eo l sequence [204] 48. B. Djafari Rouhani proofw Ne IRf ergodio sA c theorem r non-expansivsfo e [205] sequence Hilbera n si t space 49. Abd El-Sattar A. Projective cohomology over a chain complex [206] Dabbour EGY T.M. Salama 50. J. Ahsan primn PAO Ke ideal associated san d spectru] 5 1 f mBCK[2 o - E.Y. Deeba algebras A.B. Thaheem PAK . Robert51 a Musina continuite th Nemitske n th O ITf o yA y operator ] induce6 1 [2 d by a Lipschitz continuous map 52. Yunmei Chen CHA Harmonic mappings into manifolds with boundary [217] Roberta Musina ITA . Gang53 a Shrestha NEP A note on birth interval distributions [220] 54. S. Asghar PAK Acoustic diffraction due to a finite pulse [253] Asghar Qadir PAK M. Bashir 55. S. Asghar PAK Line sources diffraction by three half planes [254] . AyuM b 104 K PA . LatiA . f 56 On multivalued non-expansive type maps [255] . Zhan57 A g JingzhonCH g A metho overcomo t d e reductibiliteth y difficult n i y [263] Yang Lu mechanical theorem proving 58. Yang Lu Embedding a simplex with prescribed dihedral [268] ZhangA JingzhonCH g angles in En 59. Uko U. Livinus NIR A method for computing the stationary points of a [269] function subject to linear equality constraints 60. HoangLeMinh VTN On induced Hermitian metric r holomorphisfo c [272] vector bundles . HoangLeMinN 61 VT h The Monad construction and Hermitian-Einstein [273] metrics d El-SattaAb . . A 62 r Some varietie K-Kolmogoroe th f so v homology [274] Dabbour EGY groups . V.P63 . Onyango-OtienN KE o Differential operators associated with hermite [275] polynomials 64. V.P. Onyango-Otieno KEN On some propertie e Laguerre-typth f so e differential [276] operators . Yan65 u gL Metric equation geometrn si applications it d an y s [281] Zhang Jingzhong CHA . Boli66 s Basit EGY Banach C*-algebras not containing a subspace [285] isomorphic to CQ 67. Subhashis Nag The coadjoint orbit spaces of Diff(S ) and [290] Alberto Verjovsky MEX Teichmüller spaces i ShujiL . e68 CHA Periodic solution r Hamiltoniasfo n systema n i s [296] nonconvex potential well 69. Nguyen Minh Chuong VTN Iteration methods for solving non-linear equations [300] Khuat Van Ninh in Frechet spaces 70. Nguyen Minh Chuong VTN On the approximate normal values of multivalued [301] Khua Ninn Va ht operators in topological vector space 71. Nguyen Minh Chuong VTN Regularizatio f variationao n l inequalities problems for[302] Nguyen Van Kinh non-monotone and discontinuous perturbed operators . Nguye72 n Minh Chuong VTN Newton Seidel metho r quasilineadfo r operator [303] Le Dinh Thinh equation supermetrin si c spaces Nguyen Van Khai 73. Nguyen Minh Chuong VTN On a non-classical oblique derivative problem for [304] Le Quang Trung parabolic singular integrodifferential operators 74. Nguyen Minh Chuong VTN Projection-iteration methods for solving non-linear [305] h An n La Tra i nTh operator equations Tran Quoc Binh 105 . ShahshahanA S IR . 75 i Selecting journals for a third world mathematics [306] library R NI . LivinuU o sUk . 76 Non-linear successive over-relaxation: Extensions [311] and applications 77. DuongMinhDuc VTN equation-AOe n th u Ke = c u+ [326] G . ZafindratafG MA . 78 a On either semi-symmetric or Einsteinian 4-sub- [329] manifolds in E*> 79. Liu Ruxun CHA Talking from d'Alembert formula [341] 80. Aydin Tiryaki TUR An instability theorem for a certain sixth order [342] differential equation . N.N.N.N81 A . GH Nuamah Usin meae gth n approac poolinn hi g cross section [343] timd an e series dat r regressioafo n modelling 82. Duong Minh Duc VTN On a class of graphs with prescribed mean [345] I.M. da Costa curvature Salavessa PCR 83. S.K. Adjepong NIR Thermal decay of an initially hot isothermal water [348] A.RR NI . Bestman body with application to thermal energy storage . Nguye84 n Minh ChuonN VT g On a non-linear pseudo-differential boundary value [349] problem 85. S. Srinivasan IND On orders solely of Abelian groups III [352] 86. S.N. Storchak SSR Path integral solutio r somnfo e time-dependent [367] potential 87. C.L Yankov BUL Weierstrass preparatio divisiod nan n theorems [368] for the ring of germs of superanalytic functions . M.J88 . Ferreira PCR Kählerian submanifolds of IRn [373] R. Tribuzy BRA n+m 89. S.M.B. Kashani A IR Quadratic isoparametric systemR I n i s [383] 90. Liu Ruxun CHA On inversion of the coefficients for hyperbolic PDEs [385] D IN . ParhN . i 91 Sufficient conditions for oscillation and non- [393] oscillatio f solutionno clasa f f o seconsso d order functional differential equations R i NI AfuwapUy . A e. 92 Uniform dissipative solutions for some fourth order [395] non-linear differential equations 93. A. Uyi Afuwape NIR An existence theore r periodimfo c solution d an s [396] F. Zanolin applications to some third order non-linear differential equations 106 94. C.O. Imoru NIR Weighted norm inequalities for Riemann-Liouville [397] fractional integral 95. C.O. Imoru NIR On comparable L -norm f subadditivso e function n [398so ] p topological groups 96. C.K. Mishra IND Projective invariant conformaa n i s i Finsler spac [402I e- ] M.P. Singh IND 97. Le Van Hop VTN centee envelopine th Th f o r g algebr semidirect[410e th f ao ] product of the Heisenberg Lie algebra h^ and a reductive Lie algebra s. the rank of which is equal to 2 r o 1 . MeleM . k 98 EGY On the relation between the absolute parallelism [414] connection and a GL(4) connection 99. M.P. Singh IND CNA-motio PS-Fa n ni n [420] C.K. Mishra IND 100. Gh.Adam ROM Product integration rules at Clenshaw-Curtis and [422] A. Mobile ITA related points robusA : t implementation 101. N. Parhi IND Oscillatory and nonoscillatory behaviour of solutions [428] equation oa f n alternatel f retardeyo advanced dan d type 102. Aydin Tiryaki TUR Periodic solution f certaio s n fifth order differential [432] equations p Ho n Va 103e L . VTN combinatorice Th s computatio r Casiminfo r operators [434] of the symplectic Lie algebra and the application for determinin centeenvelopine e gth th f o r g algebra f ao semidirect product 107 PREPRINT INTERNAD SAN L REPORTN SI PHYSICS AND ENERGY AUTHOR COUNTRY TITLE ICTP SERIAL NUMBER . Dumitresc1O . u ROM Parity nonconserving asymmetries in the resonance [8] M. Horoi ROM scattering and nuclear reactions induced by polarized . CarstoiF u protons G. Stratan . DumitrescO . 2 u ROM Four-nucleon correlation e origie th th f nd o san [14] M. Horoi ROM odd-even staggerin f nucleago r charge radif o i . BulboacI a isotope elemene on f so t Wei-miu W . 3 n CHA The effects of the wave-driven radial motion in lower-[15] g-fen e nM a Xi hybrid current drive tokamak . DumitrescO . 4 u ROM An enlarged superfluid model of atomic nucleus [19] M. Horoi ROM . DumitrescO . 5 u ROM Superfluid isomer samariun i s m region [27] . HoroM i ROM 6. Nihat Taspinar TUR Current measurement studies around the Cesme [63] peninsula (Turkey) 7. I.M.A. Tag Eldin EGY Study of the optical potential for hadron-nucleus [92] E.H. Esmael scattering using Glauber's theory M.Y.M. Hassan M.N.H. Comsan 8. ShuiWang CHA Streaming gravity mode instability [103] 9. S.V. Bulanov SSR Investigatio e non-Bunemath f no n instabilitn i y [122] H.A. Shah PAK a multi-ion plasma T. Abdullah PAK 10. S.K. Gupta theoreticaA IND l stud f colo y d nuclear fusion using [123] Raj K. Gupta IND barrier penetration approach . TalukdaB . 11 r IND Half-shell scatterin n Coulomb-distorteo g d Graz [124] A. Yunus BCD potentials . Shiban12 n Se i quantue th n O INmD invers etyp w problef ene o a r mfo [131] Chowdhury ARo . y non-linear Schrödinger equation for Alfven waves in plasma 3 S.K1 . Sharma IND Validity of the adiabatic rotational model in the case [133] P.K. Raina hexadecupole th f o IND e operator . M.Y14 . EI-Ashry EGY Ion-sound emission by Langmuir soliton crossing [135] D.D. Tskhakaya SSR density barrier 1 5. S.B. Khadkikar IND Some theoretical aspect f colso d fusio reporA n- t [136] 108 16. M.Y. EI-Ashry EGY The possibility of low frequency electron wave in a [138] I. Talukdar IND beam-plasma system 1 7. K. Anane-Fenin distributioe GHTh A seasonad nan l variation f diffusso e [143] fraction a Jh . 18LN . NEP Temporal behaviou f selo r f generated magnetic field [144] influencs it d an inhibition eo f thermano F l IC flu n i x plasma 1 9. J.F. Ogunniyi averagen O NIR d force actin particla electroF n H go n ei - [146] D.D. Tskhakaya SSR magnetic field 20. P.K. Shukla IND Radiative thermal condensation instabilit e th n i y[149 ] H.C. Pant IND presenc electromagnetin a f eo c wave V.K. Jain IND 21. V.K. Jain IND Electron acousti magneto-acoustid can c mode a n [150si ] N.L. Tsintsadze SSR magnetized beam plasma system . A.A22 . Risbud IND Radiation of electromagnetic waves by an accelerated [1 51 ] N.L. Tsintsadze SSR charged particle in medium . BhattacharyyB . 23 a IND Generation of axial and lateral magnetic fields in [152] H.C. Pant IND laser produced plasmas Susmita Sarker . A.M24 . Hussein UAE Generatio radiatiod nan f thirno d harmonic y sb [163] electrostatic wave at a narrow inhomogeneous layer of a warm plasma 25. LN. Jha NEP A review of self-generated B-field in ICF corona [164] . A.M26 . Hussein UAE Nonlinear interaction of electrostatic waves at a [165] narrow inhomogeneous layer of a warm magnetoactive plasma 27. A.M. Hussein UAE Generation and radiation of second harmonics by [166] electrostatic wavnarroa t ea w inhomogeneous layer of a warm plasma 28. V. Krishnan IND Self-organization n processesu e th n so [169] E.I. Mogilevskij . V.A29 . Mofiz BGD Wakefield accelerator in a magnetized electron- [170] positron plasma 30. J.A. Diez Self-similar solutions of the second kind of non- [171; J. Gratton ARG linear diffusion-type equations . MinottF i 31. M.Y. EI-Ashry EGY Ion-sound emissio y Langmuinb r soliton reflected [172] adensita t y barrier 32. Feroz Ahmed simplA IND eT [175determinatioe moded th an r fo D l , ] Lo f no isemiconductona theid an rr temperature dependence 109 33. V.A. Mofiz BCD Ultrarelativistic envelope soliton n electroni s - [176] positron plasma pulsae th f so r magnetosphere . H.S34 . Khosla Two-centre shell model description of [182] Sham S. Malik quasi-molecular resonance states in heavy ion collisions Raj K. Gupta IND 35. S.S. Chandel Two-centre electron scattering phase shifts [187] Ra . GuptK j a IND calculate higheo dt r orders using generalized JWKB method . A.M36 . Awin LYB Positive energy bound states [202] 37. S.K. Sharma IND Double beta decay matrix elements in the [209] . MukherjeG e germanium region P.K. Rath 38. Indrani Dhar Ojha IND Study of multiplicity in nucleus-nucleus collisions - [229] P.V.S.S.S. Srinivasarao scalinO AKN tes r gfo t S.K. Tuli . Md.A39 . Rahman Pion-nucleus scattering aroun (3,3e dth ) resonance [279] H.MGuptn Se . a M. Rahman BCD D BC . SalimullaM . 40 h On the relativistic Vlasov equation in guiding-center [358] M.B. Chaudhry PAK coordinates M.H.A. Hassan SUD 41. M. Salimullah BCD Ultrarelativistic excitation of beat waves in a hot [359] M.B. Chaudhry PAK magnetized plasma S.M. Khurshed Alam M.H.A. Hassan SUD D BC . SalimullaM . 42 h Relativistic stimulated Brilloui d Ramanan n scattering[360] M.H.A. Hassan SUD inlaser-producea d plasma D BC . SalimullaM . 43 h Decay and modulation instabilities of beat waves in a [371] S.M. Khurshed Alam plasma M.H.AD SU . Hassan . E M.E44 GF . Grypeos The relative probabilit recoillese th r fo yA - s [433] G.A. Lalazissis production in nuclei in the plane wave impulse S.E. Massen approximation C.P. Panos 110 PREPRINTS AND INTERNAL REPORTS IN PHYSICE LIVINTH F GSO STAT E AUTHOR COUNTRY TITLE ICTP SERIAL NUMBER 1. Jose-Leonel Torres MEX Natural selectio d optimalitnan y [16] . FamurewO . 2 a NIR Incidence of salmonella and intestinal parasitic [59] D.D. Moro worms in food handlers in Ado-Ekiti, Ondo State, Nigeria . Chela-FloreJ . 3 s VEN Towards an understanding of CG methylation in DNA [267] R.L. Migoni ARG transcription PREPRINT INTERNAD SAN L REPORTN SI PHYSIC ENVIRONMEND AN S T AUTHOR COUNTRY TITLE ICTP SERIAL NUMBER . 1 R.C. Agrawal IND RIS and reservoirs in the NW and central Himalayan [17] foothills 2. Liu Huangfeng CHA Paleomagnetic stud f Shanwanyo g formation, Shandon] 8 1 g[ Shi Nin Province, China . J.R3 . Manzano ARG Upper ionospher magneto-sphericd ean - [36] ionospheric coupling . Zho4 u Huilan CHA Thermal stres seismogenesid an s s [50] Wei Dongping 5. Zhou Huilan CHA Self-similar growt f three-dimensionao h l fault [51] 6. Peter A.E.M. Janssen NET Nonlinear effect waten i s r waves [66] 7. K.M. Hossain BGD Seismicity and tectonics of Bangladesh [81] . AbdelWahaY M EG . 8 b On the dynamics of severe thunderstorms [244] R NI . 9 M.E i Ob . Some physical propertie f wetlano s d soils with [354] referenc tropice th o t es . E.G10 . Adibe NIR effecte Th f rainfalo s l energ soin o y l erosion ni [406] southern Nigeria 11. J.A. Adedokun NIR Acoustic sounder monitorin f windsheago r withi e [430nth ] O.O. Vaughan atmospheric boundary layer over lle-lfe, Nigeria 111 PREPRINTS AND INTERNAL REPORTS IN APPLIED PHYSICS AUTHOR COUNTRY TITLE ICTP SERIAL NUMBER . G.O1 . Ajayi NIR Physics of the tropospheric radiopropagation [23] 2. Tran Quang VTN Squeezing in collective resonance fluorescence: [28] Le Hong Lan Effec thermaa f o t l field A.S. Shumovsky 3. F.N. Ecevit Production of diffraction gratings using [278] H. Guven holographic interferometry R. Aydin TUR 4. Vladimir Buzek CZE Sub-Poissonian photon statistics in time-dependent [309] Tran Quang VTN collective resonance fluorescence L.H. Lan VTN 5. V.P. Verma IND Polarization harmonid effect2n n o s c powe n i r [331] light scatterin y fregb e electrons 6. A.K. Bisoi IND Recurrence relation weighd an s t function r fo s [411] approximation by orthonormal polynomials tOo n o 6 at 112