IAEA-TECDOC-531
INTERNATIONAL CENTRE FOR THEORETICAL PHYSICS, TRIESTE Scientific Activities in 1988
A TECHNICAL DOCUMENT ISSUEE TH Y DB INTERNATIONAL ATOMIC ENERGY AGENCY, VIENNA, 1989 INTERNATIONAL CENTR THEORETICAR EFO L PHYSICS, TRIESTE: SCIENTIFIC ACTIVITIES IN 1988 IAEA, VIENNA, 1989 IAEA-TECDOC-531 ISSN 1011-4289
Printe IAEe th AustriAn i y d b a October 1989 The IAEA does not normally maintain stocks of reports in this series. However, microfiche copie f thesso e reportobtainee b n sca d from
IN IS Clearinghouse International Atomic Energy Agency Wagramerstrasse5 0 10 x P.OBo . A-1400 Vienna, Austria
Orders shoul accompaniee db prepaymeny db f Austriao t n Schillings 100, in the form of a cheque or in the form of IAEA microfiche service coupons orderee whicb y hdma separately fro e INImth S Clearinghouse. CONTENTS
PAR I T Reviescientifie th f wo c activitie n 1988...... i s 1 . Statistical digest: Summar f participatioo y n (Calendar 1988)...... 5 . Summar f participatioo y n 198 . 1987...... 8vs 6 . Participation by geographical areas...... 6 Number of scientists and man/months by activity...... 7 Statistical summary of all activities...... 8 Participatio y activity...... b n 9 . e scientifiTh PAR I I T c programme Fundamental physics: Researc hign hi h energy physic fundamentad san l theory...... 3 1 . Spring school and workshop on superstrings...... 14 School on non-accelerator physics...... 1 5 Summer schoo hign i l h energy physic cosmology...... d an s 6 1 .
Condensed matter, atomic molecularand physics: Research in condensed matter physics...... 1 9 Experimental worksho n higpo h temperature superconductors...... 9 1 . Spring colleg condensen ei d matte "Thn o r e interactio f atomno s and molecules with solid surfaces"...... 20 Mini-workshop on "mechanisms for high temperature superconductivity"...... 2 2 . Research workshop in condensed matter, atomic and molecular physics...... 4 2 . Fifth Trieste semiconductor symposium (IUPAP): Fourth international conferenc superlatticesn o e , microstructure d microdevices...... an s 6 2 . Working party on electron transport in small systems...... 27 Mini-symposium in nonlinear systems...... 28
Mathematics: Mathematics research...... 30 Colleg variationan eo l problem analysis...... n i s 1 3 . Workshop on functional-analytic methods in complex analysis and applications to partial differential equations...... 32 Summer school on dynamical systems...... 33 Worksho dynamican po l systems...... 4 3 . First Autumn workshop on mathematical ecology...... 35 College on global geometric and topological methods in analysis...... 36
Physics energy:and Worksho nuclean po r theor nuclead an y r model calculations for nuclear technology applications...... 39
Physics and environment: Worksho modellinn po atmospherie th f go c flow field...... 1 4 . Course on physical climatology and meteorology for environmental applications...... 1 4 . Cours ocean eo n wave tides...... d san 3 4 . Worksho globan po l geophysical informatics with application researco st n hi earthquake prediction and reduction of seismic risk...... 44 Physics of the living state: Fourth Summer colleg n biophysicsi e : "Electron transfer in biological systems"...... 46 College on medical physics...... 47 College on neurophysics: "Development and organization of the brain"...... 48
Applied physics: Second schoo advancen o l d technique f computinso physics...... n gi 0 5 . Winter colleg lasen eo r physics: Semiconductor lasers and integrated optics...... 51 Second worksho optican po l fibre communication...... 2 5 . International conference on the impact of digital microelectronics and microprocessors on particle physics...... 53
Adriatico research conferences: Adriatico research conference on "Spin and polarization dynamics in nuclea particld an r e physics"...... 5 5 . Adriatico research conference on: "Unoccupied electronic states"...... 56 Adriatico research conferenc "Computen o e r simulation techniquee th r fo s stud f microscopio y c phenomena"...... 7 5 . Adriatico research conference on "Towards the theoretical understandin f higg o c superconductors"...... hT 8 5 . The application of lasers in surface science...... 60 Adriatico research conference on coherent sources for frontier spectroscopy...... 1 6 .
Other research...... 63 Long-term scientists...... 64 Microprocessor laboratory...... 5 6 . Network of Associate Members and Federated Institutes: Regular Associates...... 7 6 . Senior Associates...... 68 Junior Associates...... 69 Federation Agreements...... 70 Physic development...... d san 2 7 . The ICTP donation scheme...... 3 7 . Hosted activities...... 74 Training and research at Italian laboratories...... 75
Activities and sponsored projects outside the ICTP Regional activities co-sponsore e Centre...... th y b d 6 7 . Prizes: Heisenberg Prize...... 7 7 . Dirac Medals...... 7 7 .
PAR I II TPublication s issue n 1988...... i d 9 7 . Preprints internaland reportsin: Fundamental physics...... 81 Physics of condensed matter...... 89 Mathematics...... 99 Physics and energy...... 1 04 Physics of the living state...... 106 Physics and environment...... 1 06 Other fields...... 107 PART I
A E SCIENTIFIREVIETH F WO C ACTIVITIE 198N SI 8 at the International Centre for Theoretical Physics, Trieste, Italy
GENERAL
e maiTh n field f researcso training-for-researcd han Centre th t ha n 198i e 8 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 , atomic and molecular physics, materials science, surfaces and interfaces); (c) Mathematics (applicable mathematics, analysis, system analysis); ) (d Physic energd an s y (nuclear physics); (e) Physics and environment (geophysics, climatology and meteorology, physics of oceans); (f) Physics of the living state (biophysics, neurophysics, medical physics); (g) Applied physic d higan sh technology (microprocessors, communications, lasers, computational physics) and (h) Physic developmentd san . Some 4100 scientists too e Programm ke activitieth th parn e Centri n th i t d f r o san e fo e training at Italian laboratories, staying for a total of almost 4600 man/months. Fifty-four percen f theo t m were from developing countries e totath ,f l o accountinman/months % 81 r fo g . e hundreOn d seventy-thredan f theeo m were Associate Members from developing countried an s five hundred and fourteen of them were researchers from federated institutes in developing countries.
FUNDAMENTAL PHYSICS
Research in high-energy physics was carried out throughout the year with the participatio 4 physicist9 f o n s from developing a countrietota f f 165o o l t two-weeA .ou s k schoo workshod an l superstringn po s hel Apriln di s attende wa physicist0 7 y db s from developing countries, out of a total of 235. Thirty-three physicists from developing countries, out of a total of 64, took part in the two-week School on Non-accelerator Physics in April/May, while the six-week School in High-Energy Physics and Cosmology (June/August), including a one-week Conferenc n Phenomenologo e n Higi y h Energy Physics s attende5 physicistwa ,13 y b d s from developing countrietotaa f f 201o o l t .sou
CONDENSED MATTER, ATOMIC AND MOLECULAR PHYSICS
Researc s conductehwa d throughou yeae th t r wite participatiohth scientist3 6 f no s from developin n April/MayI g. 89 countriea totan experimenta f a f ,o o l t ou s l worksho n higo p h temperature superconductors was held in the newly-installed training laboratory. Later, a mini- worksho n mechanismo p r high-temperaturfo s e superconductivity x weeklastinsi r fo gs followed. Altogether 4 physicist12 , s from developing countries took par n thesi t o activitiesa tw ef o t ou , tota f 198o l . The Spring College on the Interaction of Atoms and Molecules with Solid Surfaces was held from April until June and lasted for seven weeks. It was attended by 90 scientists from developing nations, out of a total of 138. It was followed by the three-month Research Workshop in Condensed Matter, Atomi Moleculad can r Physics durin summee gth r months hundreo Tw .d dan fifty-seven physicists from developing countries, out of a total of 304, took part in it. In August, the Condensed Matter Group in collaboration with the International Union of Pure and Applied Physics organize h Triest5t e eth d Semiconductor Symposium entitled "Fourth International Conference on Superlattices, Microstructures and Microdevices". Two shorter meetings e Workinth , g Part n Electroo y n Transpor n i Smalt l Systems (two weekn i s August/September) and the Mini-Symposium in Nonlinear Systems (1 week in October/November) brought togethe expert0 7 r f whoo s cam3 m1 e from developing countries.
MATHEMATICS
Researc n mathematici h s carrie wa st throughou dou yeae th t r wite participatiohth 4 6 f no scientists from developing countries out of a total of 73. The College on Variational Problems in Analysis whic s hel hJanuary/Februarywa n di , wit duratioa h month1 f s attendeno 6 wa , 17 y db mathematicians of whom 77 were from developing countries. A two-week workshop on functional-analytical method n i comples x analysi d applicationan s o partiat s l differential equations followed the college. In August/September, a summer school on dynamical systems followed by a workshop on the same topic assembled 259 mathematicians of whom 167 came from developing countrie r aboufo s 0 weeks1 t . Durin e October-Decembeth g r period9 18 , mathematicians from developing countries out of 287 participants took part in the First Autumn Workshop on Mathematical Ecology (3 weeks) and in the College on Global Geometric Topological Method Analysin i s month)1 ( s .
PHYSICS ENERGYAND
A worksho n nucleao p r theor d nucleaan y r model calculation r nucleafo s r technology applications hel February/Marchn di collaboration i , n wite Nucleahth r Data Sectio e IAEAth f no , brought together for 5 weeks 65 scientists from developing countries out of a total of 90.
PHYSICS ENVIRONMENTAND
A two-week worksho n modellino p e atmospherith f o g c flow field, followe a three y b d- week course on physical climatology and meteorology for environmental applications were held in May-June. One hundred and twenty scientists from developing countries out of a total of 182 took par themn i t . From Octobe Decembero t r Centre th , e hel one-montda h cours ocean eo n wave tided san s three-weea d an k worksho n globao p l geophysical informatics with application o researct s n i h earthquake predictions and reduction of seismic risk which welcomed 132 scientists from developing countries out of a total of 211.
PHYSICS LIVINGTHE OF STATE
e FourtTh h Summer Colleg n Biophysici e s devote o electrot d n transfe n biologicai r l systems, the College on Medical Physics and the College on Neurophysics, all lasting for about one month, brought together 202 scientists from developing countries out of a total of 294 and were hel September/Decembern i d .
APPLIED PHYSICS HIGHAND TECHNOLOGY
The Second School on Advanced Techniques of Computing in Physics (4 weeks), the Winter Colleg Lasen o e r Physics: Semiconductor Laser d Integratean s d Optic weeks)4 ( s e Seconth , d Workshop on Optical Fibre communications (2 weeks) and the International Conference on the impact of digital microelectronics and microprocessors on particle physics (3 days) were held in January/March. They saw the participation of 241 scientists from developing countries out of a total of 481. e MicroprocessoTh r Laboratory welcome scientist2 1 d s from developing countriea f o t ou s total of 13. ADRIATICO RESEARCH CONFERENCES
In 1988, the series of Adriatico Research Conferences included short meetings on: spin and polarization dynamic n nucleai s d particlan r e physics; unoccupied electronic states; computer simulation techniques for the study of microscopic phenomena; towards the theoretical understandin f higo g T hsuperconductors e applicatioth ; f lasero n n surfaci s e scienced an ;
coherent sourcec s for frontier spectroscopy. Seventy-six physicists from developing countries, out of a total of 426, took part in them.
PHYSICS DEVELOPMENTAND
As in the past, a number of the experts and leading scientists taking part in the activities e Centrth t a e lecture n physics relevancit do d an s o developmentet . Thirty-two lectures were given in 1988.
TRAINING ITALIANT A LABORA TORIES
Ninety-six grants were awarde o scientistt d s from developing countrie r traininfo s t a g Italian academi d industriaan c l laboratories unde programma r e which starte n 198i d 2 wite hth financial suppor Governmene th f o t f Italyo t .
EXTERNAL ACTIVITIES
In the field of training for physics and mathematics teachers, the Centre sponsored 104 courses, workshops and symposia in 41 countries. In addition, the Centre sponsored 14 scholarship r scientistfo s s wishin 3 researco wor1 gt t a k h institution n developini s g countries; this programme was financed by the Government of Italy.
MEETINGS HOSTED CENTRETHE BY
Centre Th e hosted seven meetings organize Thire th dy db Worl d Academ f Scienceo y , (3 s of which one in co-sponsorship with the Canadian International Development Agency), the Astronomical Observatory of Trieste (1), the International Centre for Genetic Engineering and Biotechnology (1), a group of Black American Physicists (1) and the ICTP Office of External Activities (1).
BOOKS EQUIPMENTAND DONATION PROGRAMME
In 1988, with this Programme the ICTP distributed 13,200 journals, 3,400 books, 4,250 proceedings, 1,500 newsletters and scientific journals of general interest, 4,350 booklets in various language moro st e thainstitution0 n50 nearln i s developin0 10 y g countries. Withi framewore nth f thio k s Programme, abou item0 5 t f scientifiso c equipment have also been distributed to 5 universities in developing countries.
AWARDS
The 1988 Prize of the International Centre for Theoretical Physics - named this time after e latth e Werner Heisenberg, Nobel Laureat r physicefo s s 193awarde . J.Nwa 2- Dr . o dt Onuchi c fro e Universitm th Pauloo Sâ f ,o y Brazil recognition i , s contributionhi f no biophysicso st . e 198Th 8 Dirac Medal ICTe th Pf so were awarde Professoro dt s Efim Samoilovich Fradkin (Lebedev Physical Institute, Moscow, USSR) for his many fruitful contributions to the development of quantum field theory and statistics, and David Gross (Princeton University, Princeton, New Jersey, USA) for his fundamental contributions to the understanding of nuclear forces at short distances and to the theory of superstrings.
PREPRINTS AND INTERNAL REPORTS
In 1988, 428 preprints and internal reports were issued. STATISTICAL DIGEST
Summar f o participatioy n e researcth d n training-for-researci an h h activities at the ICTP in 1988
f--" Pr Tt £" TS « i
LL (TOT-13 6 DEV-961...... o « M- ices , Microstructure s an d Mic r |Q i 1 'S Q Ü, o § « •î CM Q LT s Ï ,« O 'F o CN s W •£ CO OC ta g'«« 3 m E •; I g•'S , M LF > T- c _ ! g en i
- cQ a I Surfac e Scienc (TOT-8 4 DEV=3)......
X XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX X | § 1 I ^~ ica i Informatic s wit h ADDlication t o Resea T3 o n ranspor t i n Smal l System s (TOT=6 0 DEV = i r Soectroscoo v (TOT-5 4 DEV-41...... lathematica l Ecolog y (TOT=8 5 DEV=55 ) . ganizatio n o f th e Brai (TOT=9 0 DEV=58 ) i n Fundamenta l Physic s (TOT=16 5 DEV=94 ) =1 5 DEV=4 ; anothe r 8 scient ! ratur e Superconductivit y (TOT=9 4 DEV= atte r /TOT-30 4 DEV-P57Ï...... a > X 5.2 g g 3-f -| c 1- .2 «o. | ^ = x 0 uw s g c-.2 x f O S [« > X c ÄuicCgg _co3r- a>c- > X o t x = i i E. * 3 s l-oS-g S«2og~«S'" -
*"*iï!!Jiei°!Ji (5£ Developmen t ( X x 'a Italia n laborat o i n Worksho p c f m Globa l Geo i sor s laborator y i > >X •o u s X ? iiiï;nîi£;îa«!H ï« i s P C3> X 1- E-c^o^-oSaïg-iu'iDi: niO^^^-c < X X 8 CV |jg8||jg£|<-JSjgfgg»w^y5 1 S ? & 1 T— ! c : •5iii8€lj|oPgg 5: 2 5:o .* s 55^COOr-^Wr-$ü5u_ÜO2u_ü5 S s ^ 1 e followinTh g tables deal wit l activitieal h s combined, therefore they sho e actualwth numbe f visitorso r , i.e. those scientist o participatewh s n mori d e thae activit on ne counte ar y d only once.
Summary of participation . 198198vs 8 7
Visitors Man/Months Total Percentage . (Devtotalvs . ) Dev. Ind. Dev. Ind. Visitors M/M VisitorM M/ s
1988 2220 1894 3729.47 867.18 4114 4596.65 53.96% 81.13%
1987 2171 1529 3247.27 652.01 3700 3899.28 58.68% 83.28%
Increase 2.26% 3.87% 14.87% 33.00% 11.19% 17.88%
The above figures for 1988 include:
Trainin n Italiai g n laboratories 170 - 1093.76 170 1093.76 100.00% 100.00%
The above figure r 198fo s 7 include:
Worksho microcomputern po s (Khartoum, Sudan) 24 3 7.92 0.99 27 8.91 88.89% 88.89% Workshop on fabrication of low cost laboratory equipment (Dar-es-Salaam, Tanzania) 37 - 36.63 - 37 36.63 100.00% 100.00% Workshop on the applicability of environmental physics and mathematics (Addis Ababa, Ethiopia) 8 21.60 6 0 8 2.86 24.48 8 88.24% 88.24% Trainin n Italiai g n laboratories 8 10 730.1 - 0 730.1 8 100.00- 10 0% 100.00%
Participation by geographical areas e researcth d n training-for-researci an h h activities e ICTo th fn i 198P 8
Geographical Areas Visitors Man/months Total for Area Dev. Ind. Dev. Ind. Visitors Man/Months
Africa 373 . 614.35 _ 373 614.35 Asia 909 93 1839.32 56.69 1002 1896.01 Europe 446 1381 487.26 638.75 1827 1126.01 Indonesi Oceanid aan a 10 12 12.89 26.32 22 39.21 North and Central America 124 331 186.98 125.81 455 312.79 South America 358 - 588.67 - 358 588.67 International Organizations - 77 - 19.61 77 19.61
TOTAL 2220 1894 3729.47 867.18 4114 4596.65
% Developing vs. Total 53.96% 81.13% Breakdow e numbeth f f o nscientisto r s who worked at the ICTP in 1988 and of man/months per scientific field
Other tables show thatotae th t l numbe f scientisto r e ICTcamo th 411s Pwh i o et 4 while the total number of man/months is 4596.65. In the tables which follow the number of 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 yo n while Tabl I showeII detailse sth . Percentages refer to the total participation in the field vs. the grand total.
Table I Summarized breakdown by field of activity
Activity Number of Visitors Number of Man/months Dev. Ind. Total % Dev. Ind. Total %
1. Fundamental Physics 332 333 665 14.18% 416. 79 241.59 658 .38 14.32% 2. Condensed Matter 592 506 1098 23.41% 712.49 173.37 885 .86 19.27% 3. Mathematics 563 309 872 18.59% 596. 29 165.86 762.15 16.58% 4. Physics & Energy 65 25 90 1.92% 68. 69 10.48 79 .17 1.72% 5. Physics & Environment 252 141 393 8.38% 239. 73 91.49 331 .22 7.21% 6. Living State 202 92 294 6.27% 199. 04 37.59 236 .63 5.15% 7. Applied Physics 253 241 494 10.53% 219. 79 57.23 277.02 6.03% 8. Adriatico Conferences 76 350 426 9.08% 16. 60 67.02 83 .62 1.82% g. Other research 146 43 189 4.03% 166. 29 22.55 188 .84 4.11%
TOTAL 2481 2040 4521 96.39% 2635.71 867.18 3502.89 76.21%
Outside activities
Italian laboratories 170 0 17 3.62% 1093.76 1093.76 23.79%
GRAND TOTAL 2651 2040 4691 3729.47 867.18 4596.65
Hosted activities
. 1 From Protein Structur Proteio t e n Engineering. . 2 Large Scale Structur Motiond Universee ean th f o s . Firse Th t Edwar. 3 d Bouchet International Conferenc Physicn eo Technologyd san . 4. Meeting to Address the Problem of Effective North-South Collaboration in Research and Educatio Physicn ni Mathematicsd san . . 5 Rol f Womee o Developmene th n i f Scienco t Technologd ean Thire th dn yi World. 6. Workshop on Increasing Flow of Scientific Literature to Third World Institutions. 7. Inventory of Scientific Institutions in the Third World.
additionn I * Centre th , e supporte regiona4 d10 l courses, workshop conferenced an s l al n i s region worle th f do s (se e. 76)p . Table shows a statistical summary of the activities at the ICTP itself and outside its premises.
Table II Statistical summary on activities held at and outside the ICTP
Figures on research include long- and short-term scientists as well as Associate Members, some scientists from Federated Institutes and seminar lecturers. The sponsored activities held abroad are not included.
Activity Number of Visitors Numbe f o Man/monthr s Dev. Ind. Total Dev. Ind. Total e ICTPth t : A . 1 (a) Research: Fundamental Physics 94 71 165 215.92 136.34 352.26 Condensed Matter 63 26 89 146.37 6.19 152.56 Mathematics 64 9 73 205.48 12.66 218.14 Microprocessorb La s 12 1 13 68.03 1.05 69.08 Other 146 43 189 166.29 22.55 188.84
Total 379 150 529 802.09 178.79 980.88
% Total vs. Grand Total 8.08% 3.20% 11.28% 17.45% 3.89% 21 .34%
) Trainin(b r researcgfo h (courses, workshop conferencesd an s ) Total 2102 1890 3992 1833.62 688.39 2522.01
% Total vs. Grand Total 44.81% 40.29% 85.10% 39.89% 14.98% 54.87%
2. Outside activities: Italian laboratories 170 170 1093.76 1093.76
Tota% . Granvs l d Total 3.62% 23.79%
GRAND TOTAL 2651 2040 4691 3729.47 867.18 4596.65 TablI II e Participation in the research and training-for-research activities at the ICTP in 1988
Activity Dates Number of visitors Numbe f o man/monthr s Dev. Ind. Total Dev. Ind. Total Fundamental Physics Research in high energy physics and fundamental theory All year 94 71 165 215.92 136.34 352.26 Spring school and workshop on superstrings r 11-2Ap 2 70 165 235 32.68 59.17 91.85 School on non-accelerator physics 25 Apr - 6 May 33 31 64 14.54 8.89 23.43 Summer schoo hign i l h energy physic cosmologd san y g Au 5 - n Ju 7 2 135 66 201 153.65 37.19 190.84
TOTAL 332 333 665 416.79 249 1.5 658.38 Gran. vs d% Total 14.18% 14.32%
Condensed Matter, Atomi d Moleculaan c r Physics Researc condensen hi d matter physics l yeaAl r 63 26 89 146.37 6.19 152.56 Experimental worksho hign po h temperature superconductors 11-22 Apr 80 24 104 47.13 10.78 57.91 Spring college in condensed matter on "The interaction of atoms and molecules with solid surfaces" 25 Apr - 17 Jun 90 48 138 141.28 20.54 161.82 Mini-worksho "Mechanismn po r higfo s h temperature superconductivity" l Ju 9 2 - n Ju 0 2 44 50 94 35.04 34.38 69.42 Research worksho condensen pi d matter, atomic and molecular physics Sep0 3 - t n 20Ju 257 47 304 323.94 33.21 357.15 Fifth Trieste semiconductor symposium (IUPAP): Fourth international conference on superlattices, microstructures and microdevices 8-12 Aug 45 254 299 10.10 48.08 58.18 Working party on electron transport in small systems Sep9 - tg 29Au 12 48 60 8.53 18.45 26.98 Mini-symposium in nonlinear systems v No 2 - t 31Oc 1 9 10 0.10 1.74 1.84
TOTAL 592 506 1098 712.49 173.37 885.86 Gran. vs d% Total 23.41% 19.27% contd. Activity Dates Numbef o r visitors Numbe f o man/monthr s Dev. Ind. Total Dev. Ind. Total Mathematics Research in mathematics All year 64 9 73 205.48 12.66 218.14 College on variational problems in analysis 11 Jan - 5 Feb 77 99 176 64.21 46.38 110.59 Workshop on functional-analytic methods in complex analysis and applications to partial differential equations b 8-1Fe 9 66 1 1 77 31.25 4.66 35.91 Summer school on dynamical systems Sep9 - tg Au 1 96 40 136 86.79 23.92 110.71 Worksho dynamican po l systems 5-23 Sept 71 52 123 43.11 22.73 65.84 First Autumn workshop on mathematical ecology v No 8 1 - t Oc 1 3 55 30 85 45.35 9.44 54.79 Colleg globan eo l geometri topologicad can l method analysin si s c De 6 1 - v No 1 2 134 68 202 120.10 46.07 166.17
TOTAL 563 309 872 596.29 165.86 762.15 % vs. Grand Total 18.59% 16.58%
Physics and Energy Workshop on nuclear theory and nuclear model calculations for nuclear technology applications r Ma 8 1 - b 15Fe 65 25 90 68.69 10.48 79.17
TOTAL 6 5 25 90 68.69 10.48 79.17 % vs. Grand Total 1.92% 1.72
Physics and Environment Worksho modellinn po atmospherie th f go c flow field 16-20 May 30 20 50 8.44 4.10 12.54 Cours physican eo l climatolog meteorologd yan y for environmental applications 23 May - 17 Jun 90 42 132 82.59 17.83 100.42 Course on ocean waves and tides 26 Sept - 29 Oct 75 30 105 87.37 19.95 107.32 Workshop on global geophysical informatics with applications to researc earthquakn hi e predictio reductiod nan f seismino c risk 1 5 Nov - 1 6 Dec 57 49 106 61.33 49.61 110.94
TOTAL 252 141 393 239.73 91.49 331.22 % vs. Grand Total 8.38% 7.21& contd. Activity Dates Number of visitors Number of man/months Dev. Ind. Total Dev. Ind. Total
"Electron transfer in biological systems" t Oc Sep2 1 7 - t 70 21 91 69.90 8.40 78.30 Colleg medican eo l physics 1 0 Oct - 4 Nov 74 39 113 68.89 16.97 85.86 College on neurophysics: "Development and organization of the brain" c De 2 - v No 7 58 32 90 60.25 12.22 72.47
TOTAL 202 92 294 199.04 37.59 236.63 . Granvs d% Total 6.27% 5.15%
Applied Physic d Higan sh Technology Microprocessor laboratory All year 12 1 13 68.03 1.05 69.08 Second school on advanced techniques of computing in physics 18 Jan - 12 Feb 67 34 101 59.94 20.81 80.75 Winter colleg lasen eo r physics: semiconductor lasers and integrated optics 22 Feb - 1 1 Mar 88 25 113 59.22 7.17 66.39 Second workshop on optical fibre communication 14-25 Mar 68 13 81 29.88 3.89 33.77 impace Th f digitao t l microelectronic microprocessord an s s on particle physics 28-3r Ma 0 18 168 186 2.72 24.31 27.03
TOTAL 253 241 494 219.79 57.23 277.02 % vs. Grand Total 10.53% 6.03%
Adriatico Research Conferences Spipolarizatiod nan n dynamic nuclean si particld an r e physics 12-1n Ja 5 7 47 54 1.32 7.31 8.63 Unoccupied electronic states 21-2n Ju 5 8 54 62 1.85 11.35 13.20 Computer simulation techniques for the study of microscopic phenomena 19-22 Jul 20 36 56 6.09 6.86 12.95
Towards the theoretical understanding of high Tc superconductors 26-29 Jul 34 82 116 6.15 15.68 21.83 applicatioe Th f laserno surfacn si e science 23-27 Aug 3 81 84 0.43 17.57 18.00 Coherent source r frontiefo s r spectroscopy 30 Aug - 2 Sept 4 50 54 0.76 8.25 9.01
TOTAL 76 350 426 16.60 67.02 83.62 Gran. vs d% Total 9.08% 1.82% ro contd. Activity Dates Numbe f o visitorr s Numbe f o man/monthr s Dev. Ind. Total Dev. Ind. Total Other Research Miscellaneous research All year 4 17 2 158.43 1427 12.89 171.36 Physic Developmend san t Programme l yeaAl r 5 1 1 1 7.84 2 9.66 17.48 (Anothe scientist8 r s participatin othen gi r programmes also gave lectures)
TOTAL 146 43 189 166.29 22.55 188.84 . Granvs d% Total 4.03% 4.11%
Outside activities Trainin n Italiagi n laboratories l yeaAl r 0 17 1093.7- - 6 1093.70 17 6
TOTAL 0 17 1093.7 - - 60 1093.717 6 3.62% 23.79%
GRAND TOTAL 2651 2040 4691 3729.47 867.18 4596.65
Hosted Activities
1 . From Protein Structur Proteio et n Engineering 21 - 25 Mar 2. Large Scale Structure and Motions of the Universe 6 - 9 Apr Firse Th t Edwar. 3 d Bouchet International Conference on Physics and Technology n Ju 9-11 . 4 Meetin Addreso gt Problee sth f mEffectiveo North-South Collaboration in Research and Education in Physic Mathematicd san s 19-20 Sept 5. Role of Women in the Development of Science and Technology Thire inth d World 3 - 7 Oct . 6 Worksho Increasinn po g Flo f Scientifiwo c Literature to Third World Institutions v No 1 - t Oc 1 3 7. Inventory of Scientific Institutions in the Third World 2 Nov PARTII
FUNDAMENTAL PHYSICS
Title: RESEARC HIGHN I H ENERGY PHYSIC FUNDAMENTAD SAN L THEORY
Dates: Throughou yeare th t .
Organizers: This research programme was organized by the Director of the Centre, Professor Abdus Salam, and the resident physicists Drs. K.S. Narain, S. Randjbar-Daemi, E. Sezgi. StrathdeeJ d nan .
Purpose: To contribute to the advancement of physics at an international standard through individua d teaan ml research, stimulate interaction between physicists from developing d industrializean d nations creatd an , e genuine research conditions that will encourage Associate Member visitord an s s from Federated Institute thein i s r work after their return home.
Seminars: String theory in loop space. Superstring vertex operators and scattering amplitude n arbitraro s y Riemann surface e solutioTh . f somno e general problem quantization i s n of systems with constraints. More recent resulte solutioth n i sf som o n e general problemn i s quantizatio f systemo n s with constraints. Aspect f unificatioe o interactions th w l al ne f d o n an s superalgebras for higher spins. Classical and quantum gravity from superstrings. Higgs phenomenon in string theories. Painlevé test, complete integrability - string and membrane solutions. Developments in underground physics. In how many dimensions do we live? Bounds on galactic dark matter from direct detection attempts. N=2 super conformai models. CP violation: recent experimental developments and ideas. Modular invariance and two loop vanishing of the cosmological constraint. String multi-loop corrections to equations of motion. Open problems in sigma models approach to strings. Schizons: a new window on GUT scale physics. What is the quarkonium potential? Modular invarianc twiste2 N= f do e conformai e superalgebrath d an D QC . potential model approac quarkoniumo ht . Sample example f instantono s manifold3 K n so . Virasoro type algebra d applicatioan s o conformat n i field theorie n Riemano s n surfaces. Searcher fo s supersymmetric dark matter and the proton spin. How to solve rational conformai field theories on Riemann surfaces. Gluon condensat d renormalizatioan e n group. Nonlineay to modeo r a s a l
model for quantum gravity (lattice computations). New approaches to SU2i_ * U-) radiative correction t higa s h energies. Mass correction f chargeo s d particle conductino t e sdu g boundaries. Low-energy meson physics in the quark model of superconducting type. 2-dimensional quantum gravity. High excited states of atoms in external fields and quantum chaos. Lifetime and density quark-gluoe oth f n plasm 4 signaln heavi aJ/ collisionn e io yth . Additionad an s l symmetrien i s two dimensional conformai field theor d exactlan y y solvable models. Finiteness, decouplind an g open string theories. Composite electroweak boson d conformaan s i anomaly A canonica. l relationship between the Bowick-Rajeev approach and the Polyakov approach to string theory. Berry's phase: symmetry propertie application a d an s nuclean ni r physics. Gluon condensatd ean pomeron structure. Systematic construction of (higher spin) extended conformai theories. Rational conformai field theories, quantum groups, braids and link invariants. Monodromy representations of Braid groups in 2-dimensional conformai QFT. Nonscalar local minimal c<1 conformai theories. A new approach to rational conformai field theories. Quantization of non- Abeiian Chern-Simons actions in 2+1 dimensions.
13 Summarized data on the participation (Numbe f o scientistr y worlb s d regions)
World regions Developing Industrialized TOTAL Africa 6 6 Asia 48 9 57 Europe 25 44 69 Indonesia and Oceania 4 4 North and Central America 9 9 South America 15 15 International Organizations 5 5 TOTAL 94 7 1 1 65
Title: SPRING SCHOO WORKSHOD LAN SUPERSTRINGN PO S
Dates: 11-22 April 1988.
Organizers: Professor . GreeM s n (Queen Mary College, London, UK) . ,GrisarM u (Brandeis University, Waltham, USA), A. Strominger (University of California, Santa Barbara, USA).
Purpose o coveT : r several aspect f superstrino s g theories includin e morth g e recent development thao participante s th t acquirn sca e crucial concept associated san d techniques.
Programme: Topics: Multi-loop string amplitudes. Conformai field theory. String compactifications. Sigma model approach to string theories. String field theory. Supermembranes.
Lectures: (Spring School): Recent developments in string theory, o-models and ß- functions. String perturbation theory: bosons, fermions. Supermembranes. Overview of non- perturbative approaches. Conformai field theory. Four-dimensional strings. The covariant lattice construction of 4-D strings. Conformai field theory and statistical mechanics. Superstring model building. Fusion rules and modular transformations. Loop calculations for superstrings. Virasoro d modulaan r invarianc d strinan e g field theory topics. Super Riemann surfaces o loopTw . s computations supe4 = rN . conformai algebra. (Workshop): Open Riemann surface d stringsan s n partitioO . n function n strini s g theory. e partitioTh n functio e SO(8192th f o n ) bosonic string. BRST extensio a strin f o ng propagator. Equivalence of the scattering amplitudes of the light cone gauge and the Osp(26,212) invariant string field theories. Covariant field theor f interactino y g closed e operatostringsth n O .r solutio e Liouvillth f no e theory. Genu fermionio tw s c partition function separatine th n i s g pinching limits. Hidden symmetries in superstrings. Asymmetric string compactification and chiral bosons gaugA . e invariant Lagrangia topologican i n l quantum field theory. Dynamical symmetry breaking a nontrivia n o s l topology. Four-dimensional supergravity from 4-dimensional strings. Non-linear realization of the Virasoro-Kac-Moody algebra and the anomalies. Extended supersymmetri modelG c groun o s psuperconforma4 manifolds= N w Ne . i current algebras from group manifol modelsdG . Hierarch e Yukawth f o y a couplings from orbifold compactification.n O the supersymmetry anomaly at the (4,0) a models. SUSY breaking in 4d strings. Operator formalism for superstrings. On the fermionic ambiguity in the superstring measure. String couplings from meromorphic differentials. Four-point p-adic string amplitudes. Connections on vector bundles over super Riemann surfaces. Operatorial formalis t genuma y usin b e g sth g
14 Krichever-Novikov algebra. WKB quantization, massless states and supermembranes. Incurable p-brane anomalies e supermembraneTh . a mode: n supersymmetrii l c quantum mechanics. Propertie e stresth f o s tenso n mori r e thadimensiono tw n . Curved superspac d extendean e d objects. Strings and quantum gravity. Particle scattering at the Planck scale. The superparticle descriptions with Grassmann variables or with c-number spinors. The 3-loop ß-function for the 2-dimensional nonlinear o models with a Wess-Zumino-Witten term. Anomalies in membrane symmetry algebras. Supermembranes and signature of space time. Singletons. Off-shell singletons. Open p-branes. Light-cone auxiliary field r ten-dimensionafo s l super Yang-Mills. Supercurrents and covariant lattices. Degenerate orbifolds.
Summarize e dparticipatioth datn o a n (Number of scientists by world regions)
World regions Developing Industrialized TOTAL Africa 2 2 Asia 21 8 29 Europe 34 129 163 Indonesia and Oceania 1 1 North and Central America 3 15 18 South America 10 10 International Organizations 12 12 TOTAL 7 0 1 65 235
Director d Lectureran s s 34 Participants 201 Member states represented 43 International Organizations represented 2 Applications received 651
Title: SCHOOL ON NON-ACCELERATOR PHYSICS
Datesy 1988 Ma .5 Apri2 6 : - l
Organizers: Professors E. Bellotti (University of Milan, Italy), G. Giacomelli (University of Bologna, Italy) and J. Stone (Boston University, USA).
Purpose o coveT : r theoretical lecture n particlo s e physic d cosmology/astrophysican s s and carry out experiments (large and small) that are under way or planned in this field, in order e informativtb o r botfo e h theoreticall d experimentallan y y minded participants.
Programme: Topics: Particle fieldd san s- standar d mode beyondd an l . Standard mode f cosmologo l y- statu experimentsd an s . Existing large underground detectors. Cosmic rays physics. Supernovae physic s- befor afted rean SN1987A. V.H.E. neutrinos and gammas from cosmic sources. Gamm y astronomyara . Dark matter and related experiments. Neutrino mas doubld san e beta decay experiments. Solar neutrinos. Satellite and balloon experiments. Extensiv r showeai e r arrays. Overvie d summarywan .
15 Evening seminars: Research programme at the Gran Sasso Laboratory. Searche r magnetisfo c monopoles. Searche r gravitationafo s l waves. Histor f cosmio y y physicsra c .
Lectures: Standard mode f particlo l e physics. Beyon e standarth d d model. Very high energy neutrinos and 7 rays. The Gran Sasso Laboratory. Neutrino mass and double rate decay experiments. Dark matter and related experiments. Extensive air shower arrays. Superconducting detector f weaklo s y interacting particles. Cosmic rayd elementaran s y particle physics (From the discovery of the mu-meson to the discovery of its leptonic nature). Gravitational waves. Very high energy 7 ray astronomy in India. Optical and X-ray observations of the Supernova 1987A. Particle physics with balloons, satellites and space stations. Solar neutrino r daro s k matter detection. Solar neutrinos, neutrino oscillations. Standard cosmolog- y status and experiments, superstrings implications to particle physics and cosmology. Large existing underground detectors. Magnetic monopoles searches. High energy collisions. Doubleß decay with accelerators or single atom counting techniques to search for hypothetical particles.
Summarize e dparticipatioth datn o a n (Numbe f o scientistr y worlb s d regions)
World regions Developing Industrialized TOTAL Africa 1 1 Asia 17 17 Europe 1 1 26 37 North and Central America 1 5 6 South America 3 3 TOTAL 33 3 1 6 4
Director d Lectureran s s 17 Participants 47 Member states represented 25 Applications received 172
Title: SUMMER SCHOOL IN HIGH ENERGY PHYSICS AND COSMOLOGY
Dates Jun7 2 Augus5 : e- t 1988.
Organizers: Professors G.F.R. Ellis (International School for Advanced Studies, ISAS- SISSA, Trieste, Italy) . FurlaG , n (Universit f Triesteo y , Italy) . PatJ , i (Universit f Marylando y , USA). Randjbar-DaemS , i (ICTP, Trieste, Italy) . SezgiE , n (ICTP, Trieste . ,Shaf Q Italy) d i an , (University of Delaware, USA).
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 theorie cosmologyd an s .
Programme: Topics: Bosonic and supersymmetric strings. String compactifications D = 4 superstring theories String field theory. Conformai invariance. Non-perturbative methods. Supersymmetry breaking.
16 Superstring phenomenology. Approach to the flavour problem. Higgs Vs. dynamical symmetry breaking/compositeness. Signals of supersymmetry at colliders. Neutrino physics. Non-conservations of B and L CP violation. Axions, Familons, Majorons. Issue cosmologn i s - yinflation , baryogenesis, dark matter, cosmic strings, large scale structures.
Lectures: Overvie f astroparticlo w e physics. Introductio o supersymmetrt n y (SUSY, SUGRA). Overvie f unifiewo d theories. Phenomenolog e standarth f o y d model. Quantizatiof o n systems with constraints. Introduction to string theories. Compactification in string theories. Conformai invariance and two-dimensional field theories. Symmetry and low energy string theory. Renormalization group and the c model approach to strings. Dynamical evolution of cosmic strings and superconducting. Complex manifolds and discrete symmetries in superstring compactification. Hidden symmetries in superstring theories. Addressing the flavour problem through supersymmetry and compositeness. Effective Lagrangian in string theories. Physics beyond the standard model. An overview of supermembrane theories. Superstrings and differential geometry. Effective nonrenormalizable theories; superstring-inspired models. Inflation through supersymmetry and compositeness. The early universe: review and key questions. Big bang nucleosynthesis: neutrino counting, quark-hadron transition, etc. Inflation does not necessarily imply Q = 1. Evidence for dark matter (including lensing). Large scale structure: cosmic strings, late time phase transitions, etc. Non-baryonic dark matter: candidate d abundancesan s . Baryoni e universecth f daro ke . matterag Origi e f structureTh no . : linear and non-linear processes. Large scale structure of the observed universe. Non-topological soliton s dara s k matter candidates. Spectru anisotropiesd man f backgrouno d radiation (including millimetre excess). Large scale microwave background anisotropy. Cautionary comments on the relation of particle physics and cosmology. Conference n Phenomenologyo n Highi Energy Physics (25-29 July): Heavy flavour physics. Fermion masses and mixing. Probing the standard model in hadron colliders. Symmetry breaking: the standard model and superstrings. Status of CP violation. Non-accelerator particle physics (Kamioka, 1MB and other results). Supersymmetry signals at Tevatron, SLC and LEP. Searche r rarfo s e decay modee K-mesonth f o s . Physic t Graa s n Sasso. Particle physicd an s cosmology. Recent development n lattici s e gauge theories. Dark matter candidate d theian s r detection. Statu f neutrino s o physics. Physics beyon standare dth d model. U(1) anomaly effectn i s polarized electroproduction. Supernova 1987amatriM CK .x elements. Superstring-inspired models.
Summarize e dparticipatioth datn o a n (Numbe f o scientistr y worlb s d regions)
World regions Developing Industrialized TOTAL Africa 14 14 Asia 61 5 66 Europe 41 43 84 North and Central America 4 14 18 South America 15 15 International Organizations 4 4 TOTAL 1 35 6 6 201
Directors and Lecturers 37 Participants 164 Member states represented 40 International Organizations represented 1 Applications received 697
Next page(s) left blank 17 CONDENSED MATTER, ATOMI MOLECULAD CAN R PHYSICS
Title: RESEARCH IN CONDENSED MATTER PHYSICS
Dates: Throughout the year.
Organizers: Professor . LundqvisS s t (Chalmers Universit f Technologyo y , Göteborg, Sweden), Yu Lu (Academia Sinica, Beijing, P.R. China, and ICTP), M. Tosi (University of Trieste and ICTP, Italy), E. Tosatti (International School for Advanced Studies, ISAS-SISSA, and ICTP, Trieste, Italy) and H. Cerdeira (Universidad Estadual de Campinas, UNICAMP, Campinas, Brazil).
Purpose: The research programme was organized to carry out research at the highest possible level in condensed matter physics and to stimulate scientific interaction between physicists from the developing world and from industrialized countries.
Seminars: Many-body interaction d brokean s n particle-hole symmetr n criticai y l fluids. Density dependence, triplet correlatio d differenan n t potential se singl effecth n eo t excitation
spectru n mliquii de structurHeTh . f sulphuo e r clusters S2-13 using simulated annealing 4 techniques. Electroni d vibrationaan c l propertie f semiconductoro s s investigatea s y higb d h resolution EELS. Strain accumulatio quasi-crystaln ni . Spin dynamic f Heisenbero s g modee th n i l paramagnetic phase. Fractals n introductiona : . Multifractals, application d generalizationsan s . Exactly soluble surface problems: the 6-vertex model and surface roughening. Spin-density superconductivitS waveBC d an s two-bann i y d systems. Hannay's angle classicaa : l counterpart e Berroth f y phase. Small angle neutro d X-raan n y scattering investigatio f correlationo n n i s charged macromolecula and supramolecula solution. Anderson localization and optics of disordered media. Peierls instabilit weakln i y y non-idea systemsD 1 l . Quasiparticle creatiod nan condensation in RVB superconductors. Small clusters of quantum liquids. "Chemical" effects of high temperature superconductors. Natur f excitationo e stateB RV . n i sStron g electronphonon
couplin higd c superconductivitygan hT . Roughening transitio coppen no r step phases role f eo Th . vibrational entrop surfacin y e phase transitions.
Summarized data on the participation (Number of scientists by world regions)
World regions Developing Industrialized TOTAL Africa 12 12 Asia 34 34 Europe 6 20 26 North and Central America 1 5 6 South America 10 10 International Organizations 1 1 TOTAL 6 3 2 6 8 9
Title: EXPERIMENTAL WORKSHO HIGN PO H TEMPERATURE SUPERCONDUCTORS
Dates: 11-22 April 1988.
Organizers: Dr. E. Babic (University of Zagreb, Yugoslavia), Dr. F.C. Matacotta (Istituto a Tecnologil r pe l Matériade a u Metallic n TradizionaliNo ! , ITM-CNR, Milan, Italy), Prof. C . Rizzuto (University of Genoa, Italy) and Prof. M. Tosi (University of Trieste and ICTP, Italy).
19 Purpose: To introduce interested newcomers to an active presence in the field and to offe compaca r d up-to-datan t e overvie o thoswt e already engage , througit n i d combinea h d programme of practical activities and introductory lectures.
Lectures: Phenomenology and Ginzburg-Landau theory. Chemistry of perovskite oxides. Josephson and related macroscopic quantum phenomena. The crystal chemistry and structures of
high Tc superconducting oxides. Granular aspects of high Tc superconductors, intergrain coupling, critical current, glassiness. Flux quantization and quantum devices. Applications of nuclear resonance technique n i higs T hsuperconductors . Critical currents, magnetizatiod an n susceptibility measurementc s in granular superconductors. Introduction to X-ray diffraction activity. Tunnel spectroscopy. High field application f superconductivityo s .
Experimental activities: Compound stoichiometry. Powder weighin d mixingan g . First reaction. Quenching of samples. Grinding. Second reaction. Quenching and grinding. Die pressing. Final heat treatment. Compound final heat treatment. Flux quantization demo. Lévitation check. Resistivity measurement. Compound first heat treatment. X-ray diffraction patterns. Compound: grinding, mixing, second heat treatment, final heat treatment and susceptibility measurement. X- ray data processing.
Summarized data on the participation (Number of scientists by world regions)
World regions Developing Industrialized TOTAL Africa 7 7 Asia 35 35 Europe 18 22 40 North and Central America 6 2 8 South America 14 1 4 TOTAL 80 2 4 1 04
Directors and Lecturers 27 Participants 77 Member states represented 40 Applications received 515
Title: SPRING COLLEG CONDENSEEN I D MATTE "THN RO E INTERACTIO ATOMF NO D SAN MOLECULES WITH SOLID SURFACES"
Dates Jun7 5 Apri1 2 : - el 1988.
Organizers: Professor . ButcheP s r (Universit f Warwicko y , UK) . Chiarott,G I (I i Université di Roma, Italy), P. Fulder (Max-Planck-lnstitut für Festkörperforschung, Stuttgart, Federal Republic of Germany), F. Garcia-Moliner (Instituto de Ciencia de Materiales, Madrid, Spain) . GautieF , r (Université Louis Pasteur, Strasbourg, France) . LundqvisS , t (Chalmers University of Technology, Göteborg, Sweden), Chi Wei Lung (Institute of Metal Research, Academia Sinica, Shenyang, P.R. China), N.H. March (University of Oxford, UK), K. Singwi (Northwestern University, Evanston, USA) and M.P, Tosi (University of Trieste and ICTP, Italy). Resident Directors: Professor . BortolanV s i (Universit f Modenao y , Italyd J.Lan ) . Moran Lopez (Universidad Autônom Luin Sa s Potosîe ad , Mexico).
Purpose preseno T : t basic concept currend an s t problems.
20 Programme: Introductory courses: Chemical bonds outside solid surfaces. Structural and electronic properties of semiconductor surfaces. Electronic propertie f metao s l surfaces. Vibrational properties of surfaces. Gas-surface interactions. Atomic and molecular scattering from surfaces. Low-energy electron diffraction. Scanning tunnelling microscopy. Advanced topic d applicationsan s : Adsorption. Structur f adsorbateso e . Characterization of adsorbates by electron spectroscopy. Photoemission from adsorbates. Experiments on molecular conformations outside surfaces. Rate processe neutrod san n scattering. Adsorption-desorption kinetics. Surface diffusion and reactions on surfaces. Growth processes at surfaces. Surface reactivity and fundamentals of catalysis. Catalysis. Chemical rules applied to catalysis. Electronic theory of catalysis. Defect structures at surfaces.
Lectures: Chemical bonds outside solid surfaces. Basic structural and electronic properties of semiconductor surfaces. Basic electronic properties of metal surfaces. Gas-surface interactions (Basic thermodynamics and recent work on sticking). Basic vibration properties of surfaces. Atomic and molecular scattering from surfaces. The sticking of a reactive particle. energw Lo y electron diffraction. Adsorption (experimenta d theoretical)an l . Inelasti e atomH c - surface scattering: The surface phonons of metals. Scanning tunnelling microscopy. Surface ionization of polyatomic molecules and applications. Rate processes. Structure of adsorbates. Surface ferromagnetism. Ion backscattering from clean and low coverage adsorbate surfaces. Surface phonons and their spectroscopy by He scattering. Adsorption-desorption kinetics, dynamical effects. Characterization of adsorbates by electron spectroscopy. Surface phonon calculation n i nobls e metals. Magnetocatalyti d magneto-optian c c processes. Molecular conformations outside surfaces. Photoemission from adsorbates. Surface reactivitd an y fundamentals of catalysis. Surface melting. Surface diffusion. Dynamical and dissipative effects in chemisorption (and catalysis) on metal surfaces. Molecular scattering from surfaces. Collective surface excitations. Defect structures at surfaces. Reactions on surfaces and catalysis. Surface phenomena in the theory of crystal growth. Growth processes at surfaces. High resolution He-scattering: surface perfection, damaging, roughening; lateral distributiod an n diffusion of adsorbates, thermodynamics, structure and dynamics of physisorbed layers. Tight binding method applie o tunnellint d g chemisorptio d physisorptionan n . Metal monolayern o s surfaces. Oxygen/hydrogen-reaction on the (111)-surface of platinum.
Group activities programme: Interfaces (Superlattices. Physicochemical changes in silicon surfaces due to Ar+ ion bombardment, annealing effect. High resolution multipurpose ESCA instrument: application to silicon-platinum interfaces. Clean and cobalt covered tungsten carbide ARUPS study.). Electronic properties (Experiment n magnetiso s n m2D-systemsi . Electronic structur f metallieo c glasses. Surface segregatio gas-coveren i n d metal alloys n neutralizatioIo . n spectroscop f surfaco y e electronic states. Standardless method f alloo s y analysis with electron beam. Core-level binding-energy shifts in adsorbed clusters (theory). The influence of the crystal band structure on image states. Collective modes in a quasi-two dimensional system of electrons.). Atomic dynamics d diffusionan (SIM d applicationsSan . Analysi f materialo s s with high energy particles. Non additivity of Auger electron spectra on the bombardment of diatomic molecule surfacesn so . Imagin f straigo n metal surface changed san f structurso compositiod ean n
21 of string region unde n bombardmentio r . Method f computeo s r simulatio e studth f atomo yn i n - surface interaction. Ion-photon emissio d ion-photoan n n spectroscopy. Cluster's tight binding studie f secondaro s emissionn io y . Stud f surfaco y e diffusio e fielth dy b nemissio n method. Ion- induced Auger electron emission.). Surface reactions d catalysisan (Transmission electron
microscop f catalytio y c materials. Interactio f SiHo n n molecules with a-Si:H". Potential energy
surface computation of adsorption of H2 on Ni, Cu metal and bimetallic clusters. Si, AI and P 29 27 31 d FI-Ian R R solistudiee natur th silicon-aluminiua NM d f n o eo s m phosphate wite zeolitth h e structur e Faujasiteth f o e . Theoretical studiee geometrth f o d svibration an y f moleculao s r adsorption: Acetylene. Dynamic scaling for fragmentation of porous media (computer simulations). The chemisorption and methanation of CO on Rh surface - a FIM* atop probe study. Interaction of an ionic solution with charged porous media.). Phase transitions on surfaces
(Oxygen orderin e basath n i lg e superconducto planth f o e r YBaCuO8. Constructio f twoo n - 3 6+
dimensional phase diagrams by 2 tensiometric trajectories. Semimagnetic semiconductor superlattices e orderinth n f O oxyge.o g e basa th n i ln e higplanth T hf superconductorso e .
Surface phase transitionc n i binars y alloys A phenomenologica: l approach. Kineticf o s recrystallizatio d precipitatioan n n coppei n d copper-alloys.)an r . Adsorption d desorptionan (Phonon spectra for metallic surfaces. Ab initio studies of CO adsorbed on copper surface. The
dynamic f chemisorptioo ssurfacee F n o 2 . H Chemisorptio f no f submonolayeo n r alkali-metan o l transition metal surface. Electro d energan n y propertie f smalo s l clusters adsorbe n metao d l surfaces (theory). Angle-resolved thermal desorptio f atomo n s from solid surfaces.). Structural properties (Structure determination from alternative LEED techniques. Radiation damages in zeolitee electroth n i s n microscopy. EXAFS stud f o locay l structur n i non-crystallitese . Calculation of surface phonons in covalent semiconductors. Monte Carlo simulation of surface oxidation: Application to Si(111) surfaces. The influence on non-structural parameters on LEED.). Optical properties (Modulation techniques for optical characterization of semiconductors. Optical constants determination using ATR. Thermoreflectance spectroscopy of FaAs:Ge. Optical propertie f defectso ionin i s c crystals. Raman spectr YBaCun ai similad Oan r compounds.).
Summarized data on the participation (Numbe f o scientistr y worlb s d regions)
World regions Developing Industrialized TOTAL Africa 12 12 Asia 36 1 37 Europe 14 38 52 North and Central America 14 9 23 South America 14 14 TOTAL 90 4 8 1 38
Director d Lectureran s s 42 Participants 96 Member states represented 35 Applications received 537
Title: MINI-WORKSHOP ON "MECHANISMS FOR HIGH TEMPERATURE SUPERCONDUCTIVITY"
Dates: 20 June - 29 July 1988.
Organizers: Professors G. Baskaran (Matscience Institute of Mathematical Science, Madras, India), A.R. Bishop (Los Alamos National Laboratory, USA), E. Tosatti (International Schoo r Advancefo l d Studies, ISAS-SISSA d ICTPan , , Trieste (Academiu L u ,Y Italyd aan ) Sinica, Beijing, P.R. China ICTPd an , , Trieste, Italy).
22 Purpose: To bring together a small but meaningful fraction of the theoretical condensed matter community, actively engage constructinn di e fascinatintheora gth r fo y g phenomenof o n high temperature superconductivit n in-depta r fo yh discussio e state-of-artth f o n .
Lectures: The slave boson approach to the extended models of high temperature superconductivity. Hole correlation e Hubbarth n i s d model. Antiferromagnetisd an m superconductivity. Electronic transfer of local pairs and superconductivity in metal oxide compounds. Superconductivity in chain-like structures. On possible extensions of the Gutzwiller
Ansatz. Electron correlation and antiferromagnetism in high-T superconductors. Perturbative c
treatment of local correlations in Cu-O planes for high-Tc superconductors. Spin correlations,
excitation f spin-1/o s 2 Heisenberg antiferromagne squarn o t e lattice. Spin-hole model r CuOfo s 2 layers in superconducting oxides. Exact excitation spectrum of 1-d Hubbard model. Phase
diagram of d-wave superconductors in magnetic fields. Numerical simulation of high Tc
superconductivity. Resonating valence bond picture of high Tc superconductors. The short-range RVB superconductor. Connection of RVB with QHE. Numerical simulations of RVB. Approach to
strongly correlated systems with and without slave bosons. What do high Tc experiments tell theoreticians. Exact states and variational states of a periodic two-dimensional cluster of the Heisenberg model. Parameters of a Hubbard Hamiltonian to describe superconducting Cu oxides.
Charge fluctuation pairinextendee th n gi d Hubbard model. High energy spectroscopie f higo sc hT
superconductors r threo o e dimensionalitTw . f higo yc superconductorshT .
Microconference on mechanisms for High-Tc superconductivity: About the possibility of superfluid transitio weakln i n y non-ideal Fermi-gas with repulsive interaction between particles.
Possible superconductivit junctioe th n o yn surfac f dielectrio e theorB f RV co y e Lath CuO n O . 2 4
hig c T superconductivityh . U(1) gauge theora collectiv s a y e fiel f o Hubbard d model. Superconductivit o correlatiot e du y n effects. Effec f quantuo t m fluctuation e Gutzwillerth n o s -
approximation solutio e Hubbarth f o n d model. Twinning plane superconductivit n higi c y T h superconductors. Transfer matrix metho r solvinfo d g spin-1/ D Heisenber1- 2 g model. Quasi
particle e 1-1th 1n Hubbari s d model. Critical temperatur f layereo e d hig c T superconductorsh .
Josephson junctions in yBa2Cu3O7 single crystals. The calculation of thermodynamic characteristics of YBCO in the model of strong electron-phonon coupling. Optical calculations for
LaCuO4 based superconductors. Possible mechanism for high T superconductivity: A 0
multicomponen2 t plasma model. Superconductivity in the nearly half-filled Hubbard model with strong on-site correlation. Simple spin hole model for magnetic correlations in copper oxide superconductors. Microscopic origi f effectivo n e attractive interactio a Hubbar n i n d type
Hamiltonia e Cu-th r Ofo n plane. Common excitonic mechanis r CuO fo md BiO an 23 based
perovskites. Possible occurrenc f baneo d interpla hign yi c superconductorshT . Superconductivity d impuritiean layeren i s d systems.
Summarized data on the participation (Numbe f o scientistr y worlb s d regions)
World regions Developing Industrialized TOTAL Africa 4 4 Asia 14 4 18 Europe 18 31 49 Indonesi Oceanid aan a 1 1 Nort Centrad han l America 2 14 16 South America 6 6 TOTAL 44 50 94
23 Directors and Lecturers 50 Participants 44 Member states represented 33 Applications received 257
Title: RESEARCH WORKSHOP IN CONDENSED MATTER, ATOMIC AND MOLECULAR PHYSICS
Dates Jun0 0 Septembe2 3 : - e r 1988.
Organizers: Professors P.N. Butcher (University of Warwick, UK), F. Garcia-Moliner (Institutes de Ciencias Materiales, Madrid, Spain), S. Lundqvist (Chalmers University of Technology, Göteborg, Sweden), Chi Wei Lung (Institute of Metal Research, Academia Sinica, Shenyang, P.R. China), N.H. March (University of Oxford, UK), K.S. Singwi (Northwestern University, Evanston, USA) . TosattE , i (International Schoo r Advancefo l d Studies, ISAS-SISSA, and ICTP, Trieste, Italy), M.P. Tosi (University of Trieste and ICTP, Trieste, Italy) and Yu Lu (Academia Sinica, Beijing, P.R. China ICTPd an , , 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 a three-month programme under which they can interact with a large number of leading physicists from all over the world.
Lectures: Many-body effects in inversion layers. Field theory of phase separation in first-order phase transitions. Electronic structure of high-Tc superconductors. Ballistic aggregation. Surface deconstructio f Au(110)o n . Pair potential n disorderei s d alloys. Studf o y chaos in quantum dissipative systems. Electronic structure and formation of magnetic moments in compound approacd w alloys an ne se theor th A . f fractalsn o i hy . Fermi liquid picturr fo e disordered electron system. Importanc e atomith f o ec structur f dislocationo e n plastio s c behaviou f materialso r . Supercritical fluids: Their behaviou d peculiaritiesan r . Magnetic penetratio n i Hi-Tn c superconductors. Atomic structur f graio e n boundaries. Vibrational properties of disordered materials (including also quasicrystals and fractal systems). Density functional theor n magnetii y c fields. Atomic level stresse d structuran s f glasseo e d liquidsan s . Initial stages of heteroepitaxial interface formation: GaAs on Si and Si on GaAs. The stability of different types of polarons. Wigner crystallization of electrons on helium layers: nonlocality and substrate screening effects. Particle and wave properties of solitons. Quasicrystals: An overview. Simulations of quasicrystal growth. Electronic states in quasicrystals. Electrons and phonon n superlatticesi s . Exciton n one-phonoi s n resonance Raman scattering. Universal conductance fluctuations. Tunneling in quantum Hall effect. Charge transfer excitations and high- Tc superconductivity. Differential geometric aspect e theorth f f ferroelectricityo o sy . Hopping relaxation and photoconductivity in disordered semiconductors. Freezing in glasses and spin glasses. Density wave theory of quantum Wigner crystallization. The concept of quantum- mechanical stres n Coulomi s b systems consequencesit d an s . Remark n collisioo s n processes. Damping of zero-sound in liquid He. Superconductivity in high magnetic fields. Resonant 3 tunnellin d ballistian g c transpor n higi t h magnetic fields. Nonlinear theor f deformablo y e solids with quasiparticles. Local field correction e influencth d f an sexchango e correlatiod an e e th n o n microscopic dielectric functio f coppero n . Transpor d phasan t e transition n densi s e partially ionized gaseou d solian sd state plasmas. Charge dispersio f polyelectrolyteso n . Random fluctuations of energy bands and nonequilibrium phenomena in semiconducting slid solutions. Ground state propertie f low-dimensionao s l magnetic systems. Bond particle moder fo l semiconductor melts and its application to liquid structure of germanium. Computer simulation of liquid crystal surfaces. The roles of defects in phase transitions in complex oxide crystals and some applications. Quantu d statisticaman l mechanic f non-Hamiltoniao s n systems. Analytic solutions for the anisotropic Heisenberg model with arbitrary dimensionality. Many body effects in defect propertie f binaro s y solids. Propertie d soman s e novel phenomena determiney b d nonequilibriu plasmaD m2 . Electron correlatio n conductini n g polymers. Mott transitionw Lo :
24 energy excitations and superconductivity. Pairing mechanism in high-T superconductors.
Algebraic Bethe Ansatz with application multicomponeno st t nonlinear Schrödinger c model.
Working Group Seminars: Lagrangian description of some nonlinear phenomena. Partition function zeroes in statistical mechanics: Application to phase transitions. Doping superlattices. Electronic properties of doped semiconductors. Matching techniques and applications. Characteristic time r resonanfo s t tunnellin . Rando1D n i gm networ f cellulao k r automata. Fractur n materialsi e . Stud f creeo y p fractur y internab e l friction method. Retardation effect n 1-dimensionai s l Peierls systems. Stationary solution f spio s n lattice systemse th s I . interio a neutro f o r n sta a typr I I superconductore e thermath n O ?l quenchine th f o g photoconductivity of a-Si:H. Interaction of hydrogen with dislocations. Theory of surface phonon polariton n superlatticesi s e LorentTh . z gas e simplesTh . t mode f kinetico l f particleo s d an s quasiparticles. Resonant tunneling and universal conductance fluctuations. Two-band model for graded A/xGai_xAs-GaAs superlattices quantun O . m diffusio f hydrogeo n transition i n n metals. Obtaining dynamics from multifractals. New dimension in multifractals. Theory of exciton in GaAs/GaA/As quantum wells. Size-dependent properties of small 3-D transition metal clusters. Optical properties of strained layer superlattices. Radiation enhanced diffusion of Ag in soda-lime glass. One-dimensional electron transport. Fractal dimension measured with perimeter/area s relatiorelationshiit d an n p with fracture propertie f materialso s . Electro-modulated interfacial optics. Naturn migratioio f o e superionin i n c fluorites. Vertica d longitudinaan l l transporD 2 n i t systems. Quasicrystal dynamics. Observation of defects and magnetic domains by X-ray topography. Rigorous theorems in the electron theory of surfaces and interfaces. The role of the order parameter in a liquid crystalline phase transition. Nonlinear excitations in the Heisenberg chain. DX centre in GaAs. Quantum diffusion of defects. Lightly doped quantum wells: Monte Carlo simulation. Dissolution of B-doped Si(100) layers. Weakly first order (or nearly second order) phase transitions. Elastic fields of disclinations in a non-homogeneous medium. Electronic structures of strained Si/SiGe superlattices. Density functional theory and atomic shell structure. Deep levels in semiconductors under uniaxial stress. Bimetallic systems using density functional theory. Dynami f continuouo c s time random walk. Atomic representationn A : application to the study of Auger spectra of transition metals. Fröhlic electron-phonon interaction in superlattices. On the possibility of superfluidity in Fermi gas with repulsive potential. Interband resonant polaron semimagnetie th n i s c zero-gap semiconductor Hgi.xMnxTe. Positron annihilation studies on point defects in semiconductors and ceramics. Structural characteristics and defect effects on electric transport properties of TiS2. Gauge theory of defect elastid an s c precursor decay. Graded-gap semiconductors. Optical quantum size effectn i s chemically deposited PbSe films. Phase transition and high pressure behaviour of compound semiconductors. Indirect interaction in submonolayers and sets of noble metal adatoms on jellium. Thermopower in semiconductor quantum well structures. Structural characterization and fatigue behaviour of a Carbon-implanted Nickel. The soliton behaviour of crack propagation.
Vibration property of one-dimensional quasilattice. Photoreflectance of lnGai_As/lnP multiple x quantum wells. Dynamical equations describing electron d holesemiconductora an sn i s . Inducex d representation f groupo theorse th f continuoun i so y s phase transitions.
Summarized data on the participation (Number of scientists by world regions)
World regions Developing Industrialized TOTAL Africa 51 51 Asia 110 110 Europe 58 39 97 North and Central America 10 8 18 South America 28 28 TOTAL 257 47 304
25 Directors and Lecturers 51 Participants 253 Member states represented 55 Applications received 1141
Title: FIFTH TRIESTE SEMICONDUCTOR SYMPOSIUM (IUPAP): FOURTH INTERNATIONAL CONFERENCE ON SUPERLATTICES, MICROSTRUCTURES AND MICRODEVICES
Dates: 8-12 August 1988.
Organizers: Professors C.M. Bertoni (11 Université di Roma, Italy), G.H. Döhler (Universität Erlangen-Nürnberg, Federal Republi f Germany)o c . FrovA , a (Universita "L é Sapienza", Rome . Tosatt,E Italyd an i) (International Schoo r Advancefo l d Studies, ISAS-SISSA, and ICTP, Trieste, Italy), under the auspices of the Italian Ministry for Scientific Research and wite sponsorshith h e Italiath f o np National Research Councile th (CNR) d ItalM IB an y, International Unio f Purno Applied ean d Physics (IUPAP).
Purpose: To be a meeting point for all scientists working in the growing field of semiconductor superlattices, ranging from basic physics to applications.
Lectures: Amorphous semiconductor superlattices. Perpendicular transpor- a n i t Si/aSiGe superlattices. Theoretical estimat e stablth f o ee configuratio r Garj.slnn.sAfo n s ordered allod superlattice.an y Impac f MBE-growto t h rat optican eo l propertie f GaAo s s quantum wells. Phonon superlatticesn i s . Calculated phonon spectr semiconducton ai r superlattices. Photon energy dependence of the bulk and interface phonon frequencies. Phonons in amorphous superlattices. Theor f electronio y d opticaan c l propertie f quantuo s m wells. Theor f bano y d offsets at semiconductor heterojunctions: an ab-initio linear response approach. Strained layer superlattice . e opticaStudth f o yl propertie f (100o s d (111)an ) oriented GalnAs/GaAs strained layer superlattices. CdTe-CdMnTe superlattices. Widely tunable exciton radiative recombination rat n ZnSi e e based superlattice structures. Theor f excitono y n (111)-orientei s d quantum wells. Saddle point excitons in GaAs/GaAIAs superlattices: magneto-optical effects. Stark and Zeeman effects in excitons of GaAs/GaAIAs quantum wells. Ultrafast studies of carrier relaxation in semiconductor d theian s r microstructures. Femtosecond studie f real-spaco s e transfen i r
AIGaAs/GaAs heterostructures. Carrier dynamics in (GaAs)(AIAs) superlattices. Linear and n
nonlinear radiative recombination mechanism n indireci s t GaAs/AIAm s superlattices. Band an d deep emissio d theinan r recombination processe heavila n i s i dopeS y d GaAs/AIGaAs quantum well. Coheren . incoherenvs t t resonant tunnelin d implicationgan r fasfo s t devices. Resonand an t nonresonant tunneling in GaAs-AIAs MOW structures. Intrinsic bistability in the resonant tunneling diode. Optical detection of vertical transport in short-period GaAs-AIGaAs
superlattices. Resonant tunneling of various strained Si/GexSi-| _x/Si heterostructures. Photoluminescence determinatio f chargno e accumulatio characteristie th d nan c tunneling timn ei a double-barrier resonant tunneling structure. Charge build-up and intrinsic bistability in resonant tunneling devices. Picosecond intersubband spectroscopy. Plasmon excitationG DE 2 n i s with large in-plane wave-vector. Wannier-Stark ladder n i semiconductos r superlattices. Modulation spectroscop n superlatticesi y . Electromodulation spectroscop f confineo y d systems. Theory of electroabsorption of quantum wires and dots. Quantum interference devices. Quantum point contacts and coherent electron focussing in a 2D electron gas. Resistence of multiprobe, microstructures: fluctuation, non-locality d modan , e conversion transporD 1 . n GaAs-AIGaAi t s heterojunctions. Effec f dynamicao t l screenin R absorptioFI n o g f quasi-1D-microstructureo n s (QIDMS). Intersubband resonance in quasi 1S inversion channels. DC and far infrared experiments on 1D-multi quantum well wire structures. Magneto-optics of 2D-electrons under conditions of integra d fractionaan l l quantum Hall effect e quantuTh . m Hall resistanc n quantui e m wires. Quenching of the Hall effect in a one-dimensional wire. Optical nonlinearities of semiconductor superlattices and microstructures - Key to high-speed switching and photonic applications.
26 Uttrafast modulatio f quantuo n m state y virtuab s l charge polarizatio n biasei n d quantum well structures. Memory phenomena in novel floating-gate GaAs/AIGaAs structures with graded-gap injector. Surface field induced transvers d verticaan e l tunnel junctions. Quantized state- 5 n i s doped Si-layers. Optical investigations of PbTe n-i-p-i structures. Quantum-confined excitonic interband transitions in GaAs sawtooth doping superlattices.
Summarized data on the participation (Number of scientists by world regions)
World regions Developing Industrialized TOTAL Africa 2 2 Asia 23 35 58 Europe 8 173 181 Indonesia and Oceania 1 1 North and Central America 1 45 46 South America 1 1 1 1 TOTAL 4 5 254 299
Directors and Lecturers 27 Participants 272 Member states represented 34 Applications received 658
Title: WORKING PART ELECTRON YO N TRANSPOR SMALTN I L SYSTEMS
Dates Augus9 2 : Septembe9 - t r 1988-
Organizer: Professo . BüttikeM r r (IBM Thoma . WatsoJ s n Research Center, Yorktown Heights, USA).
Purpose: To stimulate awareness and new research in this area of fundamental and technological import.
Lectures: Phase-sensitive properties of mesoscopic systems. The Aharonov-Bohm effect in condensed matter physics - A new challenge for quantum mechanics. Adiabatic and non- adiabatic quantum effect n mesoscopii s c systems. Experiment n singlo s e electron charginn i g tunnel junctions. Single electron effects and the dissipative phase transition in Josephson junctions and Josephson junction arrays. Mesoscopic fluctuations and level repulsion. Nonlinearit d photogalvanian y c effect n mesoscopii s c systems. Correlation d fluctuationan s f o s wave transmission through disordered multiple scattering media. Experiments on single electron chargin n tunnei g l junctions. Experimental studie f chargo s e quantization using tunneling capacitors. Resistance of ballistic point contacts. What is universal about universal conductance fluctuations? Wha s i measuret d whe u measuryo n a resistancee e LandaueTh - ? r formula revisited. Resistance fluctuation foua n i rs probe geometry with infinite leads. Semiclassicad an l quantum effects in tunnel junctions. Isolated rings of mesoscopic dimensions: Quantum coherence d persistenan t currents. Point contact spectroscopy. Statistic f mesoscopio s c fluctuations. Mesoscopic fluctuations of Landau diamagnetism. Point contact spectroscopy. Traversal time for tunneling. Experimental observatio e dynamicath f o n l image potentia n i extremell w lo y
GaAs/AlxGai_xAs/GaAs tunnel barriers. Reductio f quantuo n m nois y magnetib e c fieldn A : orthogona o unitart l y Wigner statistics transition. Single-electron tunnelin d charginan g g effects observed with point-contact tunnel junctions. Magnetoconductanc f smalo e l electric networks. Remarks on recent measurements of the I-V characteristic of small-capacitance Josephson
27 junctions. Mechanism for 1/f noise in strongly disordered systems. 1/f noise in disordered conductor - A case of universal conductance fluctuation. 1/f-noise: Theory and experiment. Zero bias tunneling spectroscop smaln i ysamples D 2- l . Linear magnetoresistance. Hopping conduction samplesD 1- n i . Oscillatory quantum elastic resistance f smalo s l contacts: Holes, constrictions, tube precursors. Quantum point contact d coherenan s t electron focusing. Theor f quantuo y m conductance of a narrow constriction. Coherence of electrons emitted through small constrictions and the experimental prospects. Oscillations in the Shan/in point contact resistance. Hot electron d semiconductinan s g propertie f thio s n carbon filament n insulatoo s r surfaces. Reflectionless ballistic transport. Statistics of mesoscopic fluctuations. Dephasing by inelastic scattering. Introductio o resonannt t tunnelin n semiconductorsi g . Physic f resonano s t tunneling through quantum well structures and resonant tunneling transistors. Inelastic and resonant tunneling. Coherent transport in an electron wave-guide. Resistance of multiprobe microstructures: Fluctuations, non-localit d modan y e conversion. Perpendicular transporn i t superlattices. Current topics in resonant tunneling. Edge states in diamagnetism and transport. Electric transpor n quasi-one-dimensionai t l channels. Nonequilibriu t electroho d mnan transport across band discontinuities. Microscopic approac o resistancht e fluctuations base n invariano d t imbedding: 1-channel case. Influenc f magnetieo c scatterin phase th s ega coherenc disorderen ei d metallic structures. Electromigration and local transport fields in metallic microstructures. A macroscopic approac o resistanct h e fluctuation d universaan s l conductance fluctuations- N : channel case.
Summarized data on the participation (Number of scientists by world regions)
World regions Developing Industrialized TOTAL Africa 1 1 Asia 3 6 9 Europe 5 24 29 Nort d Centrahan l America 3 18 21 TOTAL 1 2 4 8 6 0
Director d Lectureran s s 30 Participants 30 Member states represented 23 Applications received 155
Title: MINI-SYMPOSIU NONLINEAMN I R SYSTEMS
Dates 1 Octobe3 : 2 Novembe - r r 1988.
Organizers: Professors S. Lundqvist (Chalmers University of Technology, Göteborg, Sweden), H.A. Cerdeira (UNICAMP, Campinas, Brazil), G. Casati (Centra A. Volta, Como, Italy) B.Ad an . Huberman (Xerox Palo Alto Research Center, USA).
Purpose: To plan future activities in nonlinear physics and to establish collaboration with important European centres.
Lectures: Relevance of classical chaos in quantum mechanics. Quantization of homoclinic motion. Quantum chaos and dissipation. Level statistics in disordered small metallic samples. The ecolog f computationo y . Recycling strange attractors. Boundary layer induced turbulence. Characterisation of loss of memory in dynamical systems using multifractals. Dissipation on granular superconductors. Applications of dynamical zeta functions.
28 Summarized data on the participation (Number of scientists by world regions)
World regions Developing Industrialized TOTAL Asia 1 1 Europe 7 7 North and Central America 1 1 International Organizations 1 1 TOTAL 1 9 1 0
Directors and Lecturers 6 Participants 4 Member states represented 7 International Organizations represented 1 Applications received 20
29 MATHEMATICS
Title: MATHEMATICS RESEARCH
Dates: Throughou e yearth t .
Organizers: Professor . J Eells s (Universit f d WarwickICTPo y an , , TriesteUK , , Italy) and A. Verjovsky (Centro de Investigation y de Estudios Avanzados del Institute Politécnico Nacional, Mexico Cityd 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 throughout the year.
Seminars: Nonlinear ergodic theorems and applications to evolution systems in Hubert spaces. Products witd renormalizationDirae han th 8 c somn O . e permanent propertie f Co sb (X;E). Quasiumbilical immersions and conformally flat submanifold of Euclidean space. Bundle representation of the tangent group of a Lie group. Introduction to ordered topological spaces, leading to the ordered compactification introduced by L Nachbin; an analogue of the Stone-Cech compactification e analoguTh . f Cech'o e s characterizatio l (zii"izc : ßX e 2 z-\r\z= f ) th o n r fo 2 Nachbin compactificatio . CharacterizatioNX n s classifiera e X pointN th r f f maximao o fo ns l ideal f continuouo s s function f boundeo s d variatio n topologicao n l ordered space . RecenX s t developments of the Krylov-Bogolubov ergodic decompositions of invariant probability measures. Volume-preserving flow d Deh d surgeran s nan 3-manifoldsn o y . Algebraic propertie f nonlineao s r evolution equations. Harmonic maps on hyperbolic spaces of constant sectional curvature. Kosmak theorem with simple proo extensiond an f . Nonlinear problems with strong resonanct a e infinity. Lie algebras and their representations. On the spherical symmetry of static stellar models r .Kähleria fo Gaus p ma sn submanifold f Euclideao s n space. Symmetric structuren o s tangent bundles. Lagrangian n Riemanniao s n manifolds. Riemannian metric f constano s t scalar curvatur conformaa n i e i class. Connection groud an s p invariance. Meromorphic approximations in polydiscs. An introduction to ergodic theory. Measure theory on diffeomorphism groups. Differential geometry and its applications. An improved Sobolev imbedding theorem and its applications in partial differential equations. Existence and partial regularity results for the heat flow for harmonic maps. Complementarity problem. Symmetry and representations of finite groups. Picard's theorem and generalizations via Teichmüller spaces. On one-parameter groups of automorphisms e globaTh . l solutio r boundarnfo y value problem f systemo s f ferro-magnetio s c chain. Non-existence of stable harmonic maps from sufficiently pinched simply connected Riemannian manifolds. Asymptotic behaviour of almost non expansive sequences in a Hubert space. Global propagation of shock waves and free boundary problems for quasi linear hyperbolic systems. Optimal self-scaling variable metric algorithm r unconstrainefo s d optimization. Reductive group actions on algebraic varieties. Radon transform. Teichmüller spaces of Riemann surfaces. Infinitesimal symmetries and conservation laws of the classical string. On some
asymptotic properties of functions holomorphic in tubular domains. Calabi-Yau manifolds. The Yang-Mills equations on S. 4 Quasiumbilical submanifolds. Einstein 4-submanifolds. Equidistributed sequences of partitions, Riemann integrability and approximation of Lebesgue integrals. C. Taubes' iteration schem r solvinfo e e self-duagth l equation 4-manifoldn o s s with positive definite intersection form. Geometry of 1-convex manifolds and Kahler condition.
30 Summarize e dparticipatioth datn o a n (Number of scientists by world regions)
World regions Developing Industrialized TOTAL Africa 13 13 Asia 36 2 38 Europe 4 5 9 North and Central America 6 2 8 South America 5 5 TOTAL 64 9 7 3
Title: COLLEG VARIATIONAN EO L PROBLEM ANALYSISN I S
Dates Januar1 1 : 5 Februar - y y 1988.
Organizers: Professor . AmbrosettA s i (Scuola Normale Superiore, Pisa, Italy), K.C. Chang (University of Beijing, P.R. China) and I. Ekeland (University of Paris IX, France).
Purpose o introducT : e participant e variationath o t s l method f nonlineao s r analysiso t , survey current related knowledg drao t d w ean attentio researco nt h problem applicationsd an s .
Programme: Topics: Liusternik-Schnirelmann and Morse critical point theory. Indefinite functional. Elliptic boundary value problems. Ground states of field equations. Hamiltonian systems. Minimal surfaces and soap bubbles. Problems with lack of compactness.
Lectures: Introductio o variationat n l analysis n introductioA . o criticat n l point theory: d freconstrainean e d estrema, Liusternik-Schnirelman theory, critical points under symmetry, applications (ODE, second order systems, eigenvalues). Morse-Conley theory: introduction to cohomology, finite dimensional M-C theory, infinite dimensional M-C theory, applications. Linking theorem d applicationsan s : model problems, linking theorems, application o elliptit s c equations and Hamiltonian systems (periodic solutions, subharmonics). The concentration-compactness methoapplications it d dan mathematicao st l physics. Evolutio f harmonino c map applicationsd san . Periodic solution a Hamiltonia n o s n surface. Minimal period r non-convefo s . ElliptiHS x c problems. Singular dynamical systems n indeA . . xOscillation theorHS r fo y r Kepleriafo s n systems. Symplectic topology. Nonlinear subdifferential analysis. Equivariant Morse theory. Second order problems with chang e potential f th sigo e n i n . Elliptic equations with critical growthsingularitiee th n O . f harmonio s c maps. Problems with obstacle. Nonresonance conditions for semilinear elliptic problems. Bifurcatio r nonlineafo n r elliptic variational inequalities. Introduction to algebraic topology. Positive solutions to some non-positrone problems. Variational bicomple n i quantux m electrodynamics. Lagrangian theor n i fibrey d spaces. Bifurcation for nonlinear elliptic variational inequalities. Some remarks on periodic solutions of singular Hamiltonian systems. On the periodic nonlinearity and the multiplicity of solutions. Asymptotic analysi f minimao s l surfaces with obstacles. Existenc d regularitan e y resultr fo s elliptic equation d systemsan s . Elliptic equation f variationao s l type. Periodic bounce trajectories numbew witlo h a f bounc o r e points. Semi-coercive variational problems clasa n f nonlineao sO . r problems at resonance. Some examples and counter examples in the calculus of variations. Quasilinear elliptic equations with discontinuous coefficients. The existence of multiple solutions of semi-elliptic equation n IRo s n. Nonlinear elliptic problems wit n externaa h l magnetic field. Bifurcation fro e essentiamth l spectru r som mfo n compac no e t nonlinearities. Symmetried an s
31 the calculations of degree. Nonlinear PDE with lower order terms having natural growth. Singular potential d existencan s f periodio e c solution f elliptio s c typ r Hamiltoniafo e n systems. Morse index of a saddle point. Multiplicity results for superlinear boundary value problems. An index theory and existence of multiple brake orbits for star-shaped Hamiltonian systems. Static equilibrium for an elastoplastic body with a rigid obstacle. Oscillations for singular potentials. A class of semilinear elliptic systems with lack of compactness. Prescribing Gaussian curvature on . 2 HarmoniS c maps intellipsoidn oa theorM KA configurationn .i y s pacesboundara n O . y value problem for the Hamilton-Jacob! equation. Limit cycles of the gradient flow of Yang-Mills functionals. Morse index of mini-max critical points. Local linking theory and some applications. Imbedding problems in symplectic geometry.
Summarized data on the participation (Number of scientists by world regions)
World regions Developing Industrialized TOTAL Africa 18 18 Asia 21 2 23 Europe 14 89 103 Nort Centrad han l America 3 8 1 1 South America 21 21 TOTAL 77 9 9 1 76
Director d Lectureran s s 42 Participants 134 Member states represented 44 Applications received 578
Title: WORKSHOP ON FUNCTIONAL-ANALYTIC METHODS IN COMPLEX ANALYSIS AND APPLICATIONS TO PARTIAL DIFFERENTIAL EQUATIONS
Dates: 8-19 February 1988.
Organizers: Professors G.F. Mandzhavidse (Universit f Tbilisio y , USSR), A.S.A. Mshimba (Universit f Dar-es-Salaamo y , Tanzania . TutschkW d an ) e (Martin-Luther-Universität, Halle-Wittenberg, German Democratic Republic).
Purpose o introducT : e participant o functional-analytit s c method n complei s x analysis and their applications to partial differential equations, to survey current related knowledge an to draw attention to research problems.
Programme: Topics: Weak solutions of PDEs (distribution, Sobolev spaces). Integral operators in complex analysis (double integral operators with the singularities (C-z)'1 and (C-z)'2 respectively). Generalized analytic functions. Solutio f boundarno y value problem r e planPDEsfo th en i s by complex methods. Generalization higheo st r dimensions.
Lectures: Introduction o complet s x analysis. Function spaces. Weyl's D lemmaT e Th . operator. Potential vectors. The JLp operator. Complex normal form of PDE. Singular integral equations. Generalized analytic functions. Extensio f holomorphino c function d generalizatioan s n
32 for Vekua systems. Generalized potential vectors. General solution to elliptic systems. Introduction to Clifford analysis. Beltrami equations - old and new. Monogenic functions. Transversal elliptic operator n Riemanniao s n manifold d applicationsan s . Cousin problemse Th . Caucy-Rieman brancw n ne theor f compleo a h - y x analysis. Boundary value problemr fo s holomorphic functions in Cl(D) and in W^(D). Explicit solutions of boundary value problems in special cases. Generalized monogenic functions. Colombeau's generalized function solutiond an s s e probleoth f f mmultiplicationo f distributionso s . Uniform algebras: analytic structure th n i e spectra. Boundary value problems for elliptic differential equations. Geometry of Cauchy- Riemann manifolds - Levi form. Cauchy-Kowalewski theorems. Recent results on generalized analytic function e sensth f Arens-Singern o ei s . Holomorphic extensio d approximationan n f o s Cauchy-Riemann functions.
Summarized data on the participation (Numbe f o scientistr y worlb s d regions)
World regions Developing Industrialized TOTAL Africa 12 12 Asia 29 29 Europe 12 11 23 Nort Centrad han l America 2 2 South America 1 1 1 1 TOTAL 66 11 7 7
Director d Lectureran s s 10 Participants 67 Member states represented 35 Applications received 335
Title: SUMMER SCHOOL ON DYNAMICAL SYSTEMS
Dates Augus1 : Septembe9 - t r 1988.
Organizers: Professor . PaliJ s s (Institut e Matematicod a Pur aAplicadae , e IMPAd o Ri , Janeiro, Brazil) and E.G. Zeeman (University of Warwick, Coventry, UK).
Purpose: To introduce participants to the modern theory of dynamical systems, and to survey recent development currend an s t research problems.
Lectures: Topology. Qualitative ordinary differential equations. One complex variable. Elementary probabilit ergodid an y c theory. Computin experimentsd gan . Introductio dynamicao nt l systems. Introduction to rational maps and complex flows. Introduction to singularity theory and applications. Introductio o smoott n h ergodic theory. Introductio o computationat n l dynamics. Representation of ergodic flows. Diophantine conditions and KAM estimates for the Siegel theorem. Extended Sarkovski order for almost period points. Asymptotic solutions of a PDE from mathematical biology. Minimising cone d planaan s r dynamical systemse topologicath n O . l conjugacy classes of Anosov endomorphisms on tori. Fixed points, Conley and Fuller indices in the theor f flowso y generalizatioA . f Grobman-Martmao n n theore r planmfo e vector field, through Newton polyhedra. Foliatio f codimensiono : ° Leveclass nC 1 f leavee o l .th Versan si l deformation of quasihomogeneous singularities. An application of stochastic operators in ergodic theory. Finding isolated zero points of polynomial mappings by homotopy and Sard's theorem. About the number of limit cycles of a polynomial vector.
33 Summarized data on the participation (Number of scientists by world regions)
World regions Developing Industrialized TOTAL Africa 19 1 9 Asia 26 26 Europe 12 33 45 Indonesia and Oceania 1 1 Nort Centrad han l America 9 7 16 South America 29 29 TOTAL 9 6 4 0 136
Director d Lectureran s s 30 Participants 106 Member states represented 43 Applications received 993
Title: WORKSHOP ON DYNAMICAL SYSTEMS
Dates3 Septembe2 - 5 : r 1988.
Organizers: Professor . PaliJ s s (Institut e Matematicod a Pur Aplicadaae , e IMPAd o Ri , Janeiro, Brazil) and E.G. Zeeman (University of Warwick, Coventry, UK), with co-sponsorship of the Institut Matematice od a Pur aAplicadae , Janeiroe IMPAd o Ri , , Brazil.
Purpose follow-ua e onee b th o so T p:t hel 198n di 1986d 4an .
Lectures: Causality, locality and time irreversibility in general dynamics. Algorithms, dynamics and topology. Minimal sets of complex foliations in complex projective plane. Dirichelet problem and Julia sets. Homoclinic bifurcations. Classification of dynamical systems. Lifting invariant measures. Existenc d non-existencan e f invariano e t torr Hamiltoniafo i n vector fields. Centralisers and differentiable conjugacies. Computer experiments and Julia sets of entire maps. Algebra and dynamical systems. Variations on Morse theory. Dulac's problem. Geometric and topological idea n dynamicai s l systems. Dynamical systems, aspect f computatioo s n theoryA . finiteness theorem in one-dimensional dynamics. Geometry and dynamics of holomorphic flows. Best arithmetical conditions in small divisors. The structure of positive entropy surface diffeomorphisms. Reductio e singularitieth f o n f holomorphio s c foliation - sexistenc f o e séparatrices. Conjugacy of normally tangent diffeomorphisms. On the unfolding of certain codimensio 3 nsingularitie f planaso r vector fields. Dynamics under anisotropic perturbations. The speed interval of circle endomorphisms. Dimension for repellors in expanding cylinder maps. A common fixed point for commuting diffeomorphisms of surfaces. Stability conditions for discontinuous vector fields. Discontinuit f Hausdorfo y f dimensio d limian nt capacit n arco yf o s diffeomorphisms. Elementary existence proof r periodifo s c orbit f Hamiltoniao s n systems. Geometry of the modular orbifold related to the Riemann hypothesis. Large deviation, entropy and dimension. Slow diffusion is Hamiltonian systems near elliptic equilibrium points. Quasi transversal saddle node. Open questions on the dynamics of complex polynomials. On quasi- periodic bifurcations. Morse-Smale diffeomorphisms in dimension 2. Deformation of holomorphic foliations having a first integral. Genericity of hyperbolic homogeneous fields in R3. Surgery on complex polynomials. Bifurcations of planar vector fields. The finite cyclicity property. Global stability of one parameter families of vector fields. Sur les singularités dicritiques. Zeros, basic sets, topological entrop n unimodai y l maps. Controllability propertie f familieo s f vectoo s r fields. Rotation set torasfor l maps. Homoclinic points moduliand . Entrop lengtand y 2-dimensionahfor l diffeomorphisms. Onset of stochasticity for some one-dimensional systems. Morse theory, area
34 d heatan . Quadratic mapping planee th f o s. Chao f intervao s l maps with topological entrop. 0 y Global bifurcation diagram r nervfo s e impulse equations. Homoclinic bifurcations: Persistencf eo tangencies. C -integrabilit f analytio y c Hamiltonian systems. Bifurcating singular horseshoesC . k r configurations and positive C quadratic differential forms. Continuity properties of invariant r subsets and measures of 1-dimensional maps. Extended Shannon entropy and global dimension. Dimension f Cantoso r sets. Continuit f exponento y s under random perturbations. Convergencf eo renormalisatio globae th d l nan rigidit y conjecture. Plane billiards: Positive Lyapunov exponents. Topological stud f logarithmio y c foliations. Global stabilit f codimensioo y saddle-nodesN n , flips and codimension 2 reflexions. Average linking numbers of closed orbits of hyperbolic flows. Periodic orbits near equilibri n Hamiltoniaai n systems. Attractors.
Summarize e participatiodth datn o a n (Numbe f o scientistr y worlb s d regions)
World regions Developing Industrialized TOTAL Africa 5 5 Asia 13 1 14 Europe 5 46 51 North and Central America 7 5 12 South America 41 41 TOTAL 7 1 52 1 23
Director d Lectureran s s 3 Participants 120 Member states represented 32 Applications received 357
Title: FIRST AUTUMN WORKSHOP ON MATHEMATICAL ECOLOGY
Dates: 31 October - 18 November 1988.
Organizers: Professors L.J. Gross (University of Tennessee, Nashville, USA), T.G. Hallam (Universit f Tennesseeo y , Nashville, USA d S.Aan ) . Levin (Cornell University, USA). Computing equipment kindly made availabl Olivetty eb i S.p.A., Ivrea, Italy.
Purpose deao T :deptn i l h with application f mathematico s certaio t s n environmentad an l ecological problems.
Programme: Topfes: Resource management. Ecotoxicology. Epidemiology.
Lectures: Living with uncertainty. Plant modelling for resource management. Sentinels for distributed systems with incomplete boundary data. Applied behavioural ecology and resource management. Food webs with time dependence. Temporal variations of pelagic food webs. Mathematical modelling of the biology of the upper ocean. The dynamics of a benthic marine population with planktonic larvae modeA : l base n sizeo d . Determining optimal intervention strategy for an over-utilized farming system. Equilibrium state optimization for the Noy-Meir grazing model. Pest control. Effects of plant density and soil moisture on growth indices of two upland rice varieties. The first step to a prognosis system in apple production: A mathematical model to simulate the population dynamics of the codling moth (Cydia Pomonella). A simulation model for the management of vicuna populations. Forest management strategies refer to pine
35 Caterpillar control. Cod-capelin interactions in Icelandic waters and harvesting of both species. Optimum harvestin age-structurean in g d fishery model. Parameter estimatio a mode in n for l underexploited fisheries. Ratio-dependence vs. prey-dependence in prédation models. Fate and transport of toxic chemicals in aquatic systems. Strategies in ecotoxicological research. Conservation genetics. Effect f toxicanto s n individualo s n i aquatis c systems. Effectf o s toxicant populationn o s aquatin i s c systems. Population biolog conservatiod an y f endangereno d primates. Population vulnerability analysis: A case study of the Concho water snake. Conservation of large-scale natural systems. A stochastic eutrophication model for Lac Leman. e thresholTh d between persistenc d extinctioan e f populationo n a pollute n i s d environment. Modelling the energy budget of two coexisting Daphnia species in Lake Constance. Physiological aspect f resource-consumeo s r toxicant systems. Estimatio f faecao n l coliform decay a rat n i e tropical estuary by optimal matching. Refugium can assure yield and conservation. Plant growth models at non-standard condition. Grain storage management. Oil pollution in mangrove ecosystems. Inhibitio n biofili n m processes. Evolutio fluctuatiod an n n virai n l diseases. Models for multi-species parasite-host communities e epidemiologTh . e demographith f AIDo yd San c input of disease. Optimal ages of vaccination for measles. The role of social mixing in HIV dynamics. The dynamics of interacting viral strains. Some problems of a-thalassemia related to malari Thailandn ai . Ecological system f pesto s s infecting stored foodstuffs. Qualitative analysis of a mathematical model of tissue inflammation dynamics. Some mathematical models in typhoid fever e temporaTh . l variabilit f animao y l populations. Dimensional reductio r epidemiologicafo n l SIS models with simultaneous infection. Models of the spread of HIV infection among homosexual men in Denmark studied by simulations.
Workshop sessions: Resource management: Organisation; Economic, social and political concerns; Pest control issues. Ecotoxicology: Fate, transport, water quality; Strategies in ecotoxicological research problems; Effects. Conservation biology: Genetics; Problems from developing countries; Primat d largan ee mammals; Political problems; Problem n developini s g countries. Environmental problem developinn i s g countries.
Summarized data on the participation (Numbe f o scientistr y worlb s d regions)
World regions Developing Industrialized TOTAL Africa 12 12 Asia 24 1 25 Europe 6 15 21 Indonesia and Oceania 1 1 North and Central America 3 13 16 South America 10 10 TOTAL 55 3 0 85
Director d Lectureran s s 15 Participants 70 Member states represented 37 Applications received 482
Title: COLLEGE ON GLOBAL GEOMETRIC AND TOPOLOGICAL METHODS IN ANALYSIS
Dates 1 Novembe2 : Decembe6 1 - r r 1988.
Organizers: Professors S. Buoncristiano (II University of Rome, Italy), S. Gitler (Universit f Rochestero y , USA), J.D.S. Jones (Universit f Warwickd S.Ko y an ) . DonaldsoUK , n (Universit f Oxfordo y , UK).
36 Purpose introduco T : e participant Yang-Mille th o st s equation theid an sr use topologyn i s , differential geometr d analysisan y .
Programme: Topics: Introductio o differentiat n l geometry. Introduction to fibre bundles. Introduction to algebraic topology. Lie groups and Lie algebras. Hodge theory. Dirac operator theid an sr indices. Yang-Mills fields and differential geometry. Yang-Mills fields in physics. Yang-Mills theory and the topology of 4-dimensional manifolds.
Lectures: Some background in global analysis. Introduction to differential geometry. Introduction to algebraic topology. Introduction to fibre bundles. Fibre bundles: Construction of bundles; Structures on bundles; Change of structure group. Lie groups and Lie algebras: Spin representations; Representations of SU(2). Differential geometry: The degree of a smooth map; Submanifolds; Integration on manifolds. Hodge theory. Yang-Mills equations. Dirac operators and their indices. Symplectic manifolds and geometric quantization. Index theory. Quantum field theory and link polynomials. Yang-Mills theory and the topology of 4-manifolds. Geometry, physic d Yang-Millan s s theory. Yang-Mills theory, holomorphic e topologbundleth d f an o sy algebraic surfaces. Floer homology and the Arnold conjecture. Yang-Mills fields geometry and physics. Compactification of algebraic homogeneous spaces and their cohomology. Morse theory (classica d Witten'an l s approach). Kuranishi's deformation theor d applicationan y Calabi-Yao t s u manifolds. Twistor theor d non-lineaan y r differential equations. Magical propertie f instantono s s on the 4-torus. Some topological applications of harmonic mappings.
Seminars: Equivariant degree and fixed point index for self maps which "change dimension". Immersion f surfaceo s n 3-orbifoldsi s . Classificatio f Kahleo n r B-manifoldf o s constant totally real sectional curvature. Generalised Chern-Simons secondary characteristic classe d formsan s . Non-existenc f almoso e t complex structure productn o s f even-dimensionao s l spheres. Generalised Chern-Simons secondary characteristic classes and forms. Immersions modulo bordis. A coincidence-point theorem for manifolds with boundary. Existence of holomorphic functions on twistor spaces. Totally geodesic foliations of hyperbolic manifolds. An invariant formulation of Dirac brackets. Intersection R-torsion and analytic torsion for pseudomanifolds. On stability of Kummer surfaces' tangent bundle. Lie groups having square integrable representations and their enveloping algebras. On the differential properties of continuous functions. A new method of mechanical theorem proving. Determinants of Laplacians d isospedralitan y question. Riemannian manifolds with positive scalar curvature. Modulf o i harmonic maps of S into S . Blow-up of heat flows for harmonic maps. 2 4
Summarized data on the participation (Number of scientists by world regions)
World regions Developing Industrialized TOTAL Africa 15 15 Asia 44 1 45 Europe 43 59 102 Indonesia and Oceania 2 2 North and Central America 12 6 18 South America 20 20 TOTAL 134 68 202
Directors and Lecturers 41 Participants 161 Member states represented 47 Applications received 912
Next page(s) left blank 37 PHYSICS AND ENERGY
Title: WORKSHO NUCLEAN PO R THEOR NUCLEAD YAN R MODEL CALCULATIONR SFO NUCLEAR TECHNOLOGY APPLICATIONS
Dates: 15 February - 18 March 1988.
Organizers J SchmidtJ. . . Dr D.E: Dr , . Cullen (Nuclear Data Section, IAEA, Viennad an ) Professor M.K. Mehta (Bhabha Atomic Research Centre, Bombay, India), with the assistance of Professor H.R. Dalafi (ICTP) and Professor L. Fonda (University of Trieste and ICTP, Trieste, Italy). The computing equipment was made available by Olivetti S.p.A. (Ivrea, Italy).
Purpose: To familiarize participants with recent developments in the analysis of neutron resonances and in fast neutron nuclear reaction models and associated modern computer codes with are being widely used in the analysis and computation of nuclear data needed for nuclear technology applications.
Programme: Topics: Theor d analysian y f resolveo s d unresolvean d d neutron resonances. Nuclear level density. Optical mode coupled an l d channel formalism, direct nuclear reaction. Nuclear fission reaction theory. Nuclear safety problems.
Lectures: Statistical model. Resolve d unresolvean d d resonance region cross sections calculations. Recent progres currend san t statu f theorieso nuclean so r fission. Optical moded an l evaluatio f fissilno e nuclide data. Computer code GNASH. Computer code SCAT-2. Computer code STAPRE. Computer code ABAREX. Resonance self-shielding. Bulk propertie f nucleio s : level densities. Combinatorial approac quasiparticlw fe o ht e state densities. Single particl d shelan e l effect t finita s e temperature. Liquid drop mode t finita l e temperature. Fission neutron emission spectrum calculations. Giant resonances at high T and I. Compound nucleus temperatures and nuclear stratosphere at finite temperature. Recent progress and current status of semiempirical theorie f nucleao s r level densitie d associatean s d calculations. Statistical multistep reactiont a s incidence energie (SMD/SMC-theory)sV beloMe 0 w3 . Recent progres d currenan s t statuf o s pre-equilibrium reaction theories and computer code ALICE. Computer code for cross section calculation directn o s , compoun pre-equilibriud an d m models. Coupled channel calculationd an s computer codes ECIS. Startin e ECIgth S code input/output explanation. Current statu f nucleao s r reaction theories with emphasi n opticao s l mode d multistean l p direct/compound theory. Computer code EMPIRE. International nuclear model codes comparison exercises. Computer programme service to I.A.E.A. member countries.
Summarized data on the participation (Numbe f o scientistr y worlb s d regions)
World regions Developing Industrialized TOTAL Africa 16 16 Asia 28 28 Europe 9 15 24 Indonesia and Oceania 2 2 North and Central America 2 3 5 South America 8 8 International Organizations 7 7 TOTAL 6 5 25 9 0
39 Director d Lectureran s s 30 Participants 60 Member states represented 38 International Organizations represented Applications received 402
40 PHYSIC ENVIRONMEND SAN T
Title: WORKSHO MODELLINN PO ATMOSPHERIE TH F GO C FLOW FIELD
Dates: 16-20 May 1988.
Organizers: Professors O.P. Lalas (Wayne State University, Detroit, USAd C.Fan ) . Ratto (University of Genoa, Italy).
Purpose: To give an overview of the properties of the atmospheric boundary layer and e approacheth modellino t s wine gth r dpollution ai fiel r dfo , wind energy, building aerodynamics and agriculture applications.
Programme: Topics: One-dimensional and two-dimensional atmospheric boundary layer models. Effect of roughness change. Effec f topographyo t . Demonstration of some operational codes. Capabilit shortcomingd yan f existinso g models. Research trends in modelling flow fields.
Lectures: Parametrization of turbulent fluxes in BL models. Observations and models of flow over complex terrain. Boundary layer flow in complex terrain. Wind-flow estimations in complex terrain: Wind-energy and wind-loading applications. The sea-land breeze as a local wind. WAsd BZan P model r flo sfo complewn i simulatioxF terrainEO masa e f o Th n. s e modelsus e Th . consistent mode winn i l d energy siting.
Summarize e dparticipatioth datn o a n (Numbe f o scientistr y worlb s d regions)
World regions Developing Industrialized TOTAL Africa 13 13 Asia 8 8 Europe 3 17 20 North and Central America 1 3 4 South America 5 5 TOTAL 3 0 2 0 5 0
Directors and Lecturers 10 Participants 40 Member states represented 26 Applications received 289
Title: COURS PHYSICAN EO L CLIMATOLOG METEOROLOGD YAN ENVIRONMENTAR YFO L APPLICATIONS
Dates: 23 May - 17 June 1988.
Organizers: Professors R. Guzzi (Institute for Geophysical and Environmental Methodologie Nationae th f o s l Research Council, IMGA-CNR, Modena, Italy) . ShuklJ , a (University of Maryland, College Park . Primaul, B USA d an ) t (Institut f Meteorologyeo , Zürich, Switzerland).
41 Purpose: To compile, review and discuss the methods of computation and measurement related to the environmental application with particular emphasis on agrometeorology.
Programme: Topics: Numerical weather and climate modelling. Observational techniques (satellite included). Agricultural climatology.
Lectures: The observational network and data collection. The equations of the atmosphere. Data assimilatio initializationd nan . Model equatio typed nan f models. o s Introduction to parameterization. Introduction to basic numerical techniques. Global boundary conditions. High frequency variability. The planetary boundary layer. The dynamics of mid-latitude cyclones. Continuous four-dimensional assimilation. Assimilation and initialization. The parameterization of land processes. The low frequency variability in the tropics. The parameterization of moisture effects e parameterizatioTh . f verticao n l mixing. Frontogenesis. Predictio f Easterlo n y waves ove Norte r th Afric hd Atlantian aECMWe th y b c F model: synopti d statisticaan c l results. Global tropical variability: Inter-annual, intra-seasona d decadaan l l variability. Predictabilite th f o y tropical atmosphere: Short range. Current NWP activity in Japan. Predictability of the tropical atmosphere: long range. Forecastin e monsoonth g . Numerical weather forecastin n Japani g . Studying of 1982/83 El Nino and S.O. with unoccupied GCMs. Theories of the low-frequency variability. Atmosphere-land interaction. NWP activity in India. Current forecasting research at ECMWF. Current forecasting research at NMC. Numerical simulation of Monsoons in East Asia. Atmosphere energetics in the Tropics. Synoptic aspects of the Central Chile rainfall variability associated with war cold man d eventcentrae th n i s l equatorial Pacific revieA e researc. th f wo h on long-range forecasting in China. The inter-annual climatic variability of the Caribbean and South America relate ENSOo dt . Current problem perspectived an s f NWPo s . Seasonal forecasts wit a coupleh d model: preliminary studies. Current forecastin e Italiath t na g meteorological services. Predictabilit f extendeo y d range forecasts. Curren activitP NW tn China i y . Systematic and transient errors of current forecasting models: Descriptions and causes. Satellite meteorology. Mathematical inversion techniques. Applicatio f radiativo n e transfer equationn i s e atmosphereth . Remote sensin e atmosphereth f o g . Cloud clearing. Diffuse solar radiation measurement in Malaysia. Turbidity over Cairo. Estimation of solar energy in Peru. Global solar radiatio n i Ethiopian . Surface properties from satellite. Estimatio f radiatioo n n slopeso n . Processin d analysian g f researco s h class solar radiation datae importancTh . f modeo e l year solar radiation data for use in solar applications. Ground solar measurements: Present and future applications. Estimation of long-wave radiation. Atmospheric minimization: Case studies. Estimation degree days. Introduction to agrometeorology studies. Agrometeorological service in Switzerland. Modelling the phenology. Perspectives of the agrometeorological service in the Sahel climatn .i Phenologd ai e n studiesa s a y . Italo-Yugoslavian researc hailstormsn ho . Research in the field of IR radiative transfer at IMGA. Use of Markov chains to predict the probability of different incident solar radiation levels in Guatemala. Soil moisture availability from a boundary layer model combination with satellite imagery. Radiation measurements and data processing in Czechoslovakia. Gaussian plume model as applied to two tropical stations. Numerical simulation of tropical cyclones. Climatic aspects relate o foresdt t fire n Southeri s n Argentina. Modificatiof o n air flow due to the formation of a reservoir. Spectral irradiance model. An agrometeorological information system based on image processing and computer mapping. A crop yield model for cropping strategies in the seasonally arid tropics. Climatic water budget elements as a determinant of agriculture with reference to Nepal. Atmospheric ozone distribution over Iraq. The regional meteorological service of Emilia-Romagna. Net radiation for agricultural purposes in Egypt. Hail studies in Bulgaria. Evaporation measurement and analysis in the Dead Sea area.
42 Summarize e participatiodth datn o a n (Number of scientists by world regions)
World regions Developing Industrialized TOTAL Africa 35 35 Asia 34 2 36 Europe 9 34 43 North and Central America 2 6 8 South America 10 10 TOTAL 9 0 42 1 32
Directors and Lecturers 40 Participants 92 Member states represented 53 Applications received 745
Title: COURSE ON OCEAN WAVES AND TIDES
Dates: 26 September - 28 October 1988.
Organizers: Professor . CavalerL s i (Istituto studil r ope o deila dinamica délie grandi masse del Consiglio Nazionale delle Ricerche, Venice, Italy), A.H. Cook FRS (Cavendish Laboratory, University of Cambridge, UK) and G.J. Komen (Koninklijk Nederlands Meteorologisch Instituut e ButD , , Netherlands), wite sponsorshith h e Italiath f o np Direzione Generala l r pe e Cooperazione allo Sviluppo (Ministry for Foreign Affairs, Rome, Italy) and the World Meteorological Organization (Geneva, Switzerland).
Purpose: To develop the mathematical, physical and computational description of wind- driven ocean surface waves and tidal phenomena.
Programme: Topics: Hydrodynamics. Dynamics of ocean waves. Measuring ocean waves. Boundary layer model d winan sd field reconstruction. Tidal analysis. Numerical ocean wave modelling. Manual wave forecasting technique d operationaan s l applications. Storm surge modelling. Wind and wave observation from space. Wave climatology. Nonlinear effects. Air-sea interaction. 3-D models and water quality.
Lectures: Hydrodynamics. Tidal analysis. Dynamic f oceao s n waves. Boundary layer models and wind field reconstruction. Measuring ocean waves. Numerical ocean wave modelling. Storm surge modelling. Win wavd dan e observation from space. Nonlinear effects. Manual wave forecasting technique d operationaan s l applications modelD 3- .wated an s r quality. Recent work with the 3-G WAM model. Air-sea interaction. Wave climatology.
43 Summarize e dparticipatioth datn o a n (Number of scientists by world regions)
World regions Developing Industrialized TOTAL Africa 19 19 Asia 28 28 Europe 11 28 39 Indonesia and Oceania 1 1 Nort Centrad han l America 4 2 6 South America 12 12 TOTAL 7 5 3 0 1 05
Directors and Lecturers 19 Participants 86 Member states represented 43 Applications received 457
Title: WORKSHO GLOBAN PO L GEOPHYSICAL INFORMATICS WITH APPLICATIONO ST RESEARC EARTHQUAKHN I E PREDICTIO REDUCTIOD NAN SEISMIF NO C RISK
Dates 5 Novembe1 : Decembe6 1 - r r 1988.
Organizers: Professors V.l. Keiiis-Borok (Academ f Scienceso y , Moscow, USSR). L , Knopoff (Universit f Californio y s AngelesLo t a , USA d G.F)an . Panza (Universit f Triesteo y , Italy), witco-sponsorshie hth Italiae th f pno Direzione General Cooperaziona l r epe e allo Sviluppo (Ministry of Foreign Affairs, Rome, Italy), the World Laboratory and the Consiglio Nazionale delle Ricerche (CNR, Rome, Italy). Computer equipment supplie Olivetty db i S.p.A., Ivrea, Italy.
Purpose: To stimulate research in earthquake prediction, which would allow prevention of earthquake damag civiy eb l defense-type measures.
Programme: Topics: Pattern recognition. Algorithms of earthquake prediction. Related topics. Projects.
Lectures: Lithosphère as nonlinear system. Catalogues of earthquakes. The problem of earthquake prediction. Functions on an earthquake flow. Theory of dynamic systems to meteorology. Algorithm M8. Block model of seismicity. Geological contributions to long-term earthquake prediction. Construction of synthetic seismograms. Advancement in ocean circulation numerical models. Triggered earthquakes. Complexity of earthquake precursors - The dimension- reduction model for precursors. Seismic risk. Pattern recognition in earthquake prediction. A low budget study of seismicity near a natural gas field. The Messina Project. Gas and oil field seismicity. Algorith . PhysicmCN . phenomenologyvs s . Geophysical constraint n physicao s l models of seismicity. Laboratory constraints on physical models. The physics of fracture. The seismological centre and data base. Crack fusion models of seismicity. Crack growth models of seismicity. Statistical verificatio f predictiono n . Dynamical systems e structurTh . f chaoso e . Statistical verification of prediction. The role of time delays in producing instability. Engineering model of seismic risk. The triangle billiard. Formal morphostructural zoning. Computer simulation of Foreschock occurrence. Lineaments, seismicity and mineral deposites. The physics of the Boolean observer. Block mode f seismicityo l earthe e figur th e rotatio Th .f e earth Th o e.th f o n. Moveable discs mode f seismicityo l . Fractalit f seismicityo y . Hierarchical mode f seismicityo l . System r searcfo s f precursorso h . Computer d cataloguesan s . Lithospheric propertien i s seismicity studies.
44 Summarized data on the participation (Number of scientists by world regions)
World regions Developing Industrialized TOTAL Africa 12 12 Asia 27 2 29 Europe 7 38 45 Indonesi Oceanid aan a 1 1 2 Nort Centrad han l America 6 8 14 South America 4 4 TOTAL 57 49 106
Directors and Lecturers 40 Participants 66 Member states represented 44 Applications received 474
45 PHYSICLIVINE TH F GSO STATE
Title: FOURTH SUMMER COLLEGE IN BIOPHYSICS: "ELECTRON TRANSFER IN BIOLOGICAL SYSTEMS"
Dates Septembe2 1 : Octobe7 - r r 1988.
Organizers: Professor . FaracH s h (Universit f Souto y h Carolina, Columbia, USA). S , Mascarenhas (Universidade de Säo Paulo, Sâo Carlos, Brazil), F. Quadrifoglio (University of Udine, ItalyG.Gd an ) . Ghirardi (Universit f Triesto y d ICTPean , Trieste, Italy).
Purpose o presenT : t revie discusd wan s experimenta theoreticad an l l aspect f Electroo s n transfer in biological systems as well as the main research areas in the field.
Programme: Topics: General background in electron transfer in biological systems. Review of theoretical models: classical models and quantum effects. Experimental methods, technique resultsd an s . Frontier problems and perspectives in electron transfer in biology.
Lectures: Description of the biological system: mitochondria. Introduction to the quantum theory of reaction rates. Bioenergetics and thermodynamics. Electron transfer in photosynthetic centers. Photochemical electron transfe n biologicai r d modean l l systems. Modellin f electroo g n transfer reactions in biology. Bioenergetics in bacteria, photoposphorilation and charge separation. Energy transduction in plant photosynthesis. Photosystems I, II: Electron transfer in oxygenic photosynthesis. Biochemistr d electroan y n microscop f o antenny a proteinn i s photosynthesis. Introduction to ESR techniques. The photosystem I reaction centre of oxigenic photosynthetic organisms: General presentation of electron transfer reactions. Recombination reactions insid e primarth e y radical pai f photosysteo r I mreactio n centre: Magnetic field effects. Electron transfer reactions involving the secondary electron acceptor of photosystem I: Identification Quinona s a e molecule. Protein-engine includin electroe gth n tunnelin biologn gi d an y soliton bacteriorhodopsinn i s . Rol f Ubiquinoneo electron ei n transfe dynamicd an r f membrano s e diffusion. Structure and function of metalloproteins from the electron transfer chain of sulphate reducing bacteria. Crystallographic structural studies of light energy and electron transfer systems. Theoretical issue n photosynthetii s c electron transfer. Electron transfe n simpli r d an e complex metallo-proteins. Crystallographic studie f Hemo s e cluster n cytochromei s : Structural approac f electroho n transfer. Molecular electronics e MössbaueTh . r effect. Fundamental issues of reaction dynamics vieA : w from electron transfer. Rate n bacteriai s l reaction centres.
Summarize e dparticipatioth datn o a n (Number of scientists by world regions)
World regions Developing Industrialized TOTAL Africa 15 15 Asia 19 1 9 Europe 11 14 25 Nort Centrad han l America 4 7 1 1 South America 21 21 TOTAL 7 0 2 1 9 1
46 Directors and Lecturers 23 Participants 68 Member states represented 38 Applications received 546
Title: COLLEG MEDICAN EO L PHYSICS
Dates: 10 October - 4 November 1988.
Organizers: Dr. A. Benini (Ospedale Civile, Parma, Italy), Professor J.R. Cameron (Universit f Wisconsino y , Madison Guarrine D , . USA),F . i Dr (Ospedal e Maggiore, Trieste, Italy) and S. Mascarenhas (University of Säo Paulo, Säo Carlos, Brazil), with the co-sponsorship of the Italian Direzione Generat Cooperaziona l r epe e allo Sviluppo (Ministr r Foreigfo y n Affairs, Rome, Italy).
Purpose o providT : e medical physicists wit gooa h d understandin e physicath f d o g an l technical aspects of the following topics.
Programme: Topics: Radiation dosimetry. Quality assuranc diagnostin ei c radiology. X-ray computerized tomography (including quality control).
Ultrasoun medicinen di .
Lectures: Physics of ionizing radiations. Interaction of ionizing radiation with matter. Teachin n nucleao g r electronics. Managin f equipmeno g t description. Radiation quantities: Definitio d measurementan n . Principal X-ray equipment, measurement. Introductioe th o t n concept of quality assurance and organization of a QC programme. Nuclear electronics. Production of radioisotopes e involvemenTh . f medicao t l physicist n accidencasn a i s f o e t with radioactive contamination. Organization and management of medical physics and bioengineering procurement, installation and maintenance of equipment in a modern medical institution in India. Fundamentals of dosimetr f ionizino y g radiations. Dosimetr n diagnostii y c imaging (X-ra d nucleaan y r medicine). Introduction to biomagnetism. Fundamental and secondary standard dosimetry. Principles of thermoluminescent dosimetry. Protection of instruments against environment. Simple QC kits for general diagnostic radiolog d mammographyan y . Managemen f radioisotopeso t . Instrumentation and procedures for personal and area monitoring. TLD measurement techniques. Description of portable equipment: QC measurement; grid characteristics. Cancer of the cervix. Technical aspects of imaging instrument in nuclear medicine. Methods and measurements in chest and fluoro. Organization of a quality control programme at different levels. Procedures of quality contro n nucleai l r medicine. Physical principle f ultrasoundo s dosimetryR ES . . ElectretT CA . phantom. Mini tomograph. Scienc f foodo e . Quality assuranc n mammographyi e . Principal characteristics of SPECT. Biological aspects of ionizing radiation. Methods and measurements, strateg r dosfo y e measurement n patienti s s undertaking X-ray studies. Magnetis mn medicinei . Simple radioactive measurements in food and animals. Optimization of X-ray practice including dental X-ray unit. Computer operations validationsC Q : , software phantom, image processing, computerize . FusionQC d scientifiA : c n X-raperspectiveo C y EE y b . p Resultu a triat f se o ls diagnostic imaging quality. Film on comparison and dark room QC. Results from NEXT and DQM: Nationwide programmes. Invivo X-ray fluorescent. Radiation protection in diagnostic radiology in hospitals and private clinics. Hypotheses about biological action of low LET radiation at sea level and high altitude. Barrier calculations. General evaluation of requirements for a correct assessmen radioprotectioa f o t n programm developinn ei g countries. Trace element cancen i s - r research by nuclear methods. Positron emission tomography (PET). Investigation of 99m TC- labelled haematoporphyrin derivativ r nucleafo e r imagin f malignicieso g . Testing proceduren i s ultrasound. 3 D X-ray imaging. ICRP: Dose limitations system. Free radical dosimetries.
47 Evaluatio f doso n e from dental radiography. X-ray fluorescence approacw Ne . r fielfo h d study wit a miniaturh e detecto n nucleai r r medicine. Result f maio s l intercompariso n Germani n r fo y dental and mammographie units. WHO activities in management and maintenance of health care equipment frequencw Lo . y hyperthermi r developinfo a g countries. Centralized radiation safety services of a medical institution in a developing country. Alanine and lyoluminescence dosimetry. Facilities in India for medical management of persons involved in radiation accident.
Round tables: Medical physics problem n developini s g countries (representatives from Africa, China, India, Latin America). The support of international organizations in the field of equipment maintenance.
Summarize e dparticipatioth datn o a n (Numbe f o scientistr y worlb s d regions)
World regions Developing Industrialized TOTAL Africa 13 13 Asia 30 30 Europe 4 32 36 Indonesia and Oceania 2 2 North and Central America 10 1 1 1 South America 15 15 International Organizations 6 6 TOTAL 74 3 9 1 1 3
Directors and Lecturers 37 Participants 76 Member states represented 42 International Organizations represented 2 Applications received 665
Title: COLLEGE ON NEUROPHYSICS: "DEVELOPMENT AND ORGANIZATION OF THE BRAIN"
Dates Novembe7 : Decembe2 - r r 1988.
Organizers: Professor . BorsellinA s o (International Schoo r Advancefo l d Studies, ISAS- SISSA, and ICTP, Trieste, Italy), O. Siddiqi (Tata Institute of Fundamental Research, Bombay, India) and J.H. Kaas (Vanderbilt University, Nashville, Tennessee, USA).
Purpose: To introduce the participants to current ideas about the structure and functional organization of the brain and to present an account of modern theories of perception, integrative action, learning, cognition and other higher functions.
Lectures o reat e structur th dw e brai th Ho n :termf i n o e f functiono s e cerebraTh . l cortex visua d otherwisean l . Cortical architectur d spatia an d etempora an l l receptive field organization. Retinotopic mapping tooa r informatio fo s l a s n processing. Integratio f moduleo n s for depth perception. Motion detection in man and machines. Biological strategies in robot navigation. Motion computation in flies. Computation of optical flow. 3D motion estimation. The dynamics of photoreceptors. Retina. Biological feasibility of algorithms of optical flow. Retinotopic mappin r opticagfo l flow computation. Lateral maskin demaskind gan visionn gi . Visual reconstructio n stereo-visioni n . Selective attention e organizatioTh . e premototh f o n r area, inter-hemispheric relations. Auditory physiolog d psychophysicsan y . Impossible figures (demonstration). General introductio e theorth f o "neuronao t yn l networks". Noisy neural
48 networks. Auditory localization. Movement computatio e aperturth d an ne problem. Analysif o s vertebrate retinal processing. Speech perception: Spectral analysis solutioA . f figure-grounno g discrimination problem. Strange attractors for "neural networks". Speech perception: Temporal analysis. Visual strategies. Basic structur e nervouth f o e s system. Neuron structurd an e function. Neurotransmitters. Evolution of the neocortex. Neurotransmitter receptors. Visual e braith nd stem an e chemica e Th system.ey e l Th :senses . Somatosensory systeme Th . developmen f mapo t f sensorso y surface braine th n i s. Visual cortex motoe Th . r system role eTh . of neuronal death during development. Postnatal development of projections to the brain from the eye. Embryonic developmen e braith vertebratesn f ni o t . Celtissud an l e differentiation. Rulef o s development deduced from directing visual projections to the auditory brain. The auditory system. Changing connection developine th n i s g brain corpue Th : s callosum. Growt trophid han c factors in the brain. The development of order in visual pathways. Development of the auditory system. Axon growth and pathfinding. The development of the genetically abnormal visual system e albinth f o s typee rol f neurao Th e. l activite developmenth n i y f braio t n maps. Information processing in the brain. Neural crest development and cell migration. Cell migration. The development of the primate visual system. Brain waves and their significance. Mathematical approaches to EEG. Neuroethology and electroreception in vertebrates. The role of neuron activity in the maintenance of organization in the mature brain. Brain plasticity, learning and memory. Taste reception. Developmen e retinth f - ao Implication t r visuafo s l function. Development of the brain - A summary and review.
Seminars: Phase-transitions in a simulation model of the network on neuron-like elements neuraA . l network with self-inducing noise. Cortical potentials evokee humath n i dn brain by reversing the perceived laterality of a sound image: Stimulation by ITD-Reversals. Conformational analysis enkephalines higA . h level languag d micro-computeean r programmr efo description and simulation of neural architecture. Spin glass-like neural networks. Analysis of brain electrical activity models an data processing. Scanning electron-microscope studies on the brain. Neuronetworks with dynamical thresholds e constructioTh . d reconstructioan n f o n memory.
Summarized data on the participation (Numbe f o scientistr y worlb s d regions)
World regions Developing Industria lized TOTAL Africa 6 6 Asia 29 2 31 Europe g 18 27 Nort Centrad han l America 5 12 17 South America 9 9 TOTAL 58 3 2 9 0
Directors and Lecturers 26 Participants 64 Member states represented 37 Applications received 312
49 APPLIED PHYSICS
Title: SECOND SCHOOL ON ADVANCED TECHNIQUES OF COMPUTING IN PHYSICS
Dates: 18 January - 12 February 1988.
Organizers: Drs . JameF . s (CERN, Geneva, Switzerland) . NobilA , e (International School for Advanced Studies, ISAS-SISSA, Trieste . RebbC , Italyd ian ) (Brookhaven National Laboratory, Upton, USA), with the co-sponsorship of the Direzione Generate per la Cooperazione allo Sviluppo (Ministr f Foreigo y n Affairs, Rome, Italy), International Schoo r Advancefo l d Studies (ISAS-SISSA, Trieste, Italy) and Olivetti S.p.A. (Ivrea, Italy).
Purpose: To provide the attending scientists with a sound knowledge of the possibilities offere y computersb d , bringing them through theoretical lecture d hand-oan s n computing experienc developmena o et necessare th f o t y skillunderstandingd an s .
Programme: Topics: Basic computing topics: Computer architecture. Operating systems. Programming languages Software engineering. Computer graphics. Databases and communications. Methods algorithms:and Theory of algorithms. Numerical methods. Symbolic and Algebraic Methods. Sortin searchingd gan . Applications physics:to UNIX, MS-DOS, FORTRA. N77 Approximation and integration methods. Monte Carlo methods. Linear algebra. Differential equations. Prolog. REDUCE (algebraic computing). Sortin searchind gan g methods.
Lectures: MS-DOS. UNIX. Software engineering. FORTRAN 77. Numerical integration. VMS. LISd REDUCEPan . Monte Carlo. Sortin searchingd an g . Pasca d Modula-2an l . Algebraic methods for PDE. Computer graphics. EARN and bitnet. Computer architecture. Linear algebra. Theor f algorithmso y . Toolpack. Programme libraries. Application puro t s e mathematics. Integral equations. OFT and statistical physics. Accelerator physics. Finite elements for PDE. Molecular dynamics. Solid state physics. Geophysics. Computing and teaching of physics.
50 Summarize e participatiodth datn o a n (Number of scientists by world regions)
World regions Developing Industrialized TOTAL Africa 15 1 5 Asia 23 23 Europe 1 1 26 37 Indonesia and Oceania 1 1 North and Central America 5 4 9 South America 12 12 International Organizations 4 4 TOTAL 6 7 34 1 01
Directors and Lecturers 30 Participants 71 Member states represented 43 International Organizations represented 1 Applications received 844
Title: WINTER COLLEG LASEN EO R PHYSICS: SEMICONDUCTOR LASER INTEGRATED SAN D OPTICS
Dates: 22 February - 11 March 1988.
Organizers: Professors B. Costa (Centro Studi e Laboratori Telecomunicazioni, CSELT, Turin, Italy), W. Gadomski (University of Warsaw, Poland) and H. Winful (University of Michigan, USA), with the co-sponsorship of the Direzione Generale per la Cooperazione allo Sviluppo (Ministr f Foreigo y n Affairs, Rome, Italy)e computinTh . g equipmen s madwa t e availably b e Olivetti S.p.A. (Ivrea, Italy).
Purpose givo T overvien : ea fundamentale th f wo f semiconductoo s r laser integrated an s d optics, both in general and in connection with the applications to optical fibres.
Programme: Topics: Light-matter interactio n semiconductorsi n . Physic f semiconductoso r light source detectorsn a s . Optical semiconductor devices: properties and classification. Fabrication technology of semiconductor devices. Characterization of semiconductor materials and devices. Laser dynamics: coherence, chaos, stability and noise problems. Optoelectronic devices techniques. Introduction to integrated optics. Theor f planao y r guided wave-structures. Material processind san g techniques. Components and devices. Applications. Optoelectronic integration.
Lectures: A survey of modern optics and its applications. Chaos in semiconductor lasers. Survey of applications of lasers and nonlinear optics. Theory of planar guided wave structures. Chaos in semiconductor lasers. The theory and practice of lateral-effect position-sensitive
51 silicon photodetector. Light matter interaction in semiconductors. The physics of semiconductor light source d detectorsan s . Optical semiconductor devices. Advanced structuref o s semiconductor device r telecommunicationsfo s : Laser diodes, LEDd photodetectorsan s . Fabrication technolog f semiconductoo y r devices. Characterizatio f semiconductoo n r materials d devicesan . Physic d propertiean s f semiconductoo s r quantum well heterostructures. Quantum well devices: Structures and applications. Dynamics of laser diodes: Mode stability (time and space) e instrumentatioTh . n opticaa f o n l laboratory. Acousto-, electro-, magneto-optic effects in materials. Introduction to integrated optics. Integrated optics, materials and processing techniques: Thin films, diffusion, ion exchanges, miscellaneous. Integrated optics, components and devices: Directional couplers, filters, switches, modulators, active devices, multifunctional devices, characterization techniques, applications for telecommunications. Nonlinear integrated optics. Optoelectronic integration.
Summarized data on the participation (Number of scientists by world regions)
World regions Developing Industrialized TOTAL Africa 24 24 Asia 39 39 Europe 9 23 32 Indonesia and Oceania 2 2 Nort Centrad an h l America 2 2 4 South America 12 12 TOTAL 88 2 5 1 1 3
Director d Lectureran s s 24 Participants 89 Member states represented 45 Applications received 653
Title: SECOND WORKSHOP ON OPTICAL FIBRE COMMUNICATION
Dates: 14-25 March 1988.
Organizers: Professors G. Guekos (Swiss Federal Institute of Technology, ETH, Zurich, Switzerland), Ü.M. Leal Costa (ABC XTAL, Campinas, Brazil) and F. Tosco (Centro Studi e Laboratori Telecomunicazioni, CSELT, Turin, Italy), with the co-sponsorship of the Direzione Generale per la Cooperazione alto Sviluppo (Ministry of Foreign Affairs, Rome, Italy). The computing equipmen s madwa t e availabl y Olivetteb i S.p.A. (Ivrea, Italy).
Purpose: To give an overview of the fundamentals of optical fibre communications and to demonstrat e modereth n developmen applicationd an t f opticao s l varioue fibreth n i s s e areath f o s telecommunication networks.
Programme: Topics: Structur d fabricatioan e f opticao n l fibres. Propagation. Fibre measurement methods. Splices and connectors. Transmission systems. Future prospect r fibrfo s e communications.
Lectures: Optical fibre communications. Optical propertie d characterizatioan s f o n fibres. Transmission system devices: Sources, detectors, circuits. Splices, connectors and
52 passive devices. Fabrication technolog f opticao y l fibres. Fibre transmission systems. Broad band subscriber loops. Advanced fibre communication systems. Ultrashort pulse n fibresi s . Advanced fibre communication systems and future prospects on optical communications.
Seminars: GaP-AheterostructurP a G ! e waveguides. Prism coupling technique th r fo e measuremen f modo t e spectr f fibresao . Optical coupler loss calculatio y numericanb l simulation. Analysi fibra f eo s directional coupler wit buffea h r layer. Realizatio e refracteth f o n d near-field method. Fibre-optic Sagnac interferometer - electronicF H . r terrestriafo s d satellitan l e communications. Optical fibre r transmissiofo s f imagesno . 100-fold compressio f laseo n r pulses using single-mode optical fibres. An easy approach to the design of digital optical links. Geometrical characterizatio f liquio n d core fibre y measuremenb s f thermallo t y induced mode cutoffs and interference. The CERN host interface optical interconnect.
Summarize e dparticipatioth datn o a n (Number of scientists by world regions)
World regions Developing Industrialized TOTAL Africa 13 13 Asia 29 29 Europe 5 12 17 Indonesi Oceanid aan a 3 3 North and Central America 2 1 3 South America 16 16 TOTAL 6 8 1 3 8 1
Directors and Lecturers 15 Participants 66 Member states represented 39 Applications received 431
Title: INTERNATIONAL CONFERENCE ON THE IMPACT OF DIGITAL MICROELECTRONICS AND MICROPROCESSORS ON PARTICLE PHYSICS
0 MarcDates3 - h8 2 :1988 .
Organizers: Under the chairmanship of Professor S. Lundqvist (Chalmers University of Technology, Göteborg, Sweden): Professor . BertocchL s i (ICTP, Trieste, Italy) . BudinicM , h (University of Trieste, Italy), E. Castelli (University of Trieste and Istituto Nazionale di Fisica Nucleare, INFN, Trieste, Italy) . CentrS , o (Universit f Paduao y , Italy) . ColavitA , a (Argentina, ICTP and INFN, Trieste, Italy), Ph. Gavillet (CERN, Geneva, Switzerland), C. Verkerk (CERN, Geneva, Switzerland) and L. Zanello (University of Rome "La Sapienza", Italy), with the co- sponsorshi e Internationath f o p l Schoo r Advancefo l d Studies (ISAS-SISSA, Trieste, Italy), Istituto Nazionale di Fisica Nucleare (INFN, Trieste, Italy) and the European Organization for Nuclear Research (CERN, Geneva, Switzerland).
Purpose o looT : k inte applicationth o f digitao s l microdevice n experimentai s d an l theoretical particle physics.
Programme: Topics: Fast trigger processors. Event selection. Preprocessing and real-time data reduction.
53 Data acquisition. Storage systems. Process control, accelerator control. Digital signal processor. Number crunchers: Farm cubesd san . Ensemble f VLSso I elements (e.g. transputers). Custom, semi-custom desig toolsd nan . Cellular automata, neural networks. Portable, small scale systems (instruments).
Lectures: Multi-processor developments in the USA for the future HEP experiments and accelerators. Trigger for LEP experiments. The Delphi first and second level trigger. Trigger problems for future accelerators. Design automation for SSC data acquisition. Fastbus based software trigge t r SLCMara fo r I I ko APE-100t . FroE mAP E : PresenAP e d futurth an tf o e project. Special purpose processors for high energy physics. The second level trigger of L3 experiment. Multiprocessor event filterine Heidelberg/Darmstadth t ga t Crystal Ball. EVI hig:A h speed interface between fastbu d VAX-BIan s . Microprocessor acceleratoP LE n i s r control. Data acquisitio MicrnFarmO X Alephardware D o VA Th e . hth r evenefo t processor multiuseA . r data acquisition based on the Macintosh Computer, The LEP OPAL event selection system. Multiprocessor systems in Fastbus. Use of digital signal processor (DSP) in high energy physics experiments. SIROCCO IV: Front end readout processor for the Delphi Microvertex. Charged particl 3 detectorL e e triggeth FasA r . fo r t Track trigger processo r OPAfo r L experimente Th . new UA1 first level trigger processor. Neural networks. On-line application the ACP. Neural networks and cellular automata in experimental high energy physics. Cellular automata. Use of optical data transmission in HEP. The data acquisition system for the Crystal Ball at LNS. The CERN host interface optical interconnect. Data processin r particlfo g e physic a silico n i s n detector environment. An OPAL 32 bit coincidence array integrated circuit. Application of bipolar cell array technology to the development of a time digitizer. The contiguity processor — A SIMD architectur a secon r fo e d level track trigger. Transputer d Occaman s . Recent experience with transputer based processor farm transputeA . r based second-level calorimeter trigger system for the ZEUS experiment. A site oriented supercomputer for theoretical physics. Integrated microsystem drivina s a s g forc futurn i e e detector design. VLSI structure r tracfo s k findinge Th . UA2 data acquisitio ntriggeP systemXO re processoTh . r integrated int higoa h energy physics experiment. SU(3) lattice gauge theory calculations on T800 transputer arrays.
Summarize e participatiodth datn o a n (Number of scientists by world regions)
World regions Developing Industrialized TOTAL Africa 1 1 Asia 6 2 8 Europe 7 117 124 North and Central America 14 14 South America 4 4 International Organizations 35 35 TOTAL 1 8 1 68 1 86
Directors and Lecturers 74 Participants 1 12 Member states represented 22 International Organizations represented 1 Applications received 548
54 ADRIATICO RESEARCH CONFERENCES
Title: ADRIATICO RESEARCH CONFERENCE ON "SPIN AND POLARIZATION DYNAMICS IN NUCLEAR AND PARTICLE PHYSICS"
Dates: 12-15 January 1988.
Organizers: Under the chairmanship of Professor S. Lundqvist (Chalmers University of Technology, Göteborg, Sweden): Professors A.O. Barut (Universit f Coloradoo y , Boulder, USA, d ICTP)an . OneY , ! (University f Texaso , Austin, . PenzUSAA d o)an (Istituto Nazional i Fisiced a Nucleare, INFN, Trieste, Italy, and CERN, Geneva, Switzerland), with the co-sponsorship of the International Schoo r Advancefo l d Studies (ISAS-SISSA, Trieste Departmene th ,f o Italy) d an ,f o t Theoretical Physics of the Trieste University and the INFN (Trieste, Italy).
Purpose revieo T : e fundamentawth l problem f polarizatioo s n phenomen nuclean i a d an r particle physics.
Programme: Topics: Revie f polarizatioo w n effect n polarizei s d proton-proton experiments. Review of polarization effects in production processes of hadrons. Perspective on polarized eT--e+ (SLC, PEP). Polarization phenomena in weak interactions. Review of theoretical models; test of QCD. Tes f spio t n effect spectroscopyn i s . Spin effects in nuclear physics and Dirac phenomenology.
Lectures: Spin physic perspectiven i s . Polarizatio n hyperoi n n production. Quark-diquark model in exclusive processes. Status of planar - transverse amplitude - phase patterns. Orbital angular momentum effects. Hyperon polarizatio finad nan l state interactions. t\-cd an decap p n i y quark-diquark model. Spin searche r SUS fo ssubstructured Yan . Polarizatio d confinementan n . Physics with polarized jet targets. Polarized quarks in polarized protons. Plans for polarization at HERA. Polarization physics with e+e~ rings. Polarized beams in LEP. Polarization measurements in LEP. Linea d non-lineaan r r effects s quantuI : m mechanics really necessary? Spin structure functions. Spin in nuclear physics and NN phenomenological potentials. Polarization in few nucléon systems. Evidence against broad dibaryon n pp->NAi s . Spin physic t LAMPFa s . Spin effectt a s intermediate energies. Polarizatio testn pp->AP i nC . d PolarizatioAan n measurement t LEARa s . Physics with polarized neutrons at SATURNE. Experimental program with polarized neutrons at SIN. Polarized p(p) beams at Tevatron. Spin physics at LHC and SSC energies. High density polarized gaseous targets. Spin dynamic p(p)n si , rings. Polarized (p,p7beam handling techniques. A mode f polarizatioo l n asymmetrie n pp-scatteringi s . Parity nonconservatio d nucleaan n r spin effects.
Summarize e dparticipatioth datn o a n (Numbe f o scientistr y worlb s d regions)
World regions Developing Industrialized TOTAL 6 Europe 36 42 North and Central America 7 7 1 South America 1 International Organizations 4 4 TOTAL 7 47 54
55 Director d Lectureran s s 36 Participants 18 Member states represented 12 Applications received 141
Title: ADRIATICO RESEARCH CONFERENCE ON: "UNOCCUPIED ELECTRONIC STATES"
Dates: 21 - 25 June 1988.
Organizers: Unde e chairmanshith r f Professoo p . LundqvisS r t (Chalmers Universitf o y Technology, Göteborg, Sweden): Professors J.C. Fuggle (Katholieke Universiteit, Nijmegen, The Netherlands) . RoseR , i (Universit f Triesteo y , Italyd G.Aan ) . Sawatzky (Rijksuniversiteit Groningen e Netherlands)Th , , wite co-sponsorshihth e Internationath f po l Schoo r Advancefo l d Studies (ISAS-SISSA, Trieste, Italy), Sincrotrone Trieste (Italy) e Universitth , f Groningeo y n (The Netherlands) and the University of Nijmegen (The Netherlands).
Purpose brino T : g togethe numbea r f leadino r g experimentalist theoristd an s asseso t s s where we now stand in our understanding of unoccupied electronic states and what are likely to questiony ke futuree e th th r s.fo e b
Programme: Topics: Unoccupied electronic states. Their role in physical properties (magnetism, optical, thermal and conductivity effects; gaps in semiconductors). Experimental studies by inverse photoemission (BIS), X- ray absorption (XANES t EXAFS)no , , scanning tunnelling microscopy (synchrotron induced photoemission, etc.). Bandstructur d multiplan e e scattering calculations, relationship to experiment. Exchange correlation, self energies. The role of Mott Hubband and ligand-metal transfer energies and the size of transfer integrals.
Lectures: Optical studies S calculationDO . d correctionan s r comparisofo s n with spectroscopies especially for unoccupied states. The DOS and multiple scattering approaches to unoccupied states. Matrix element BISn i s . Core hole effect measurementd an XASn i s S BI . f o s Coulomb correlation energies. Self energies, d imaginaryreaan l . Theoretical studie f selfo s - energie d lifetiman s e broadening. Transition metal compounds. Multiples it d t an structur S XA n ei use as a probe of ground state electronic structure in the solid state. Some thoughts on the theory of multiplet structures in XAS of solids. ELS studies of unoccupied DOS. Multiphoton studie f o unoccupies d state t a surfacen si adsorbates d an s . Angle resolved inverse photoemission. Spin polarized inverse photoemission. Many-body effects on the single particle band structur f singlo e e metals. Photon emission wite scanninth h g tunnelling microscope. Computatio f exciteo n d negativan d e affinity state n i molecules d clustersan s . Inverse photoemissio f surfaceno d adsorbatesan s . Use f symmetro s n XASi y , especiall r adsorbatesfo y . The electronic structure of surfaces. Theoretical studies of the scanning tunnelling microscope. Unoccupied surface states and resonances on transition metal surfaces: Theoretical aspects. On semiconductor d metal-semiconductoan s r interfaces.
56 Summarize e dparticipatioth datn o a n (Numbe f o scientistr y worlb s d regions)
World regions Developing Industrialized TOTAL Asia 1 1 Europe 5 47 52 Indonesia and Oceania 1 1 Nort Centrad han l America 6 6 South America 2 2 TOTAL 8 54 6 2
Directors and Lecturers 30 Participants 32 Member states represented 18 Applications received 150
Title: ADRIATICO RESEARCH CONFERENC "COMPUTEN EO R SIMULATION TECHNIQUER SFO THE STUDY OF MICROSCOPIC PHENOMENA"
Dates: 19 - 22 July 1988.
Organizers: Under the chairmanship of Professor S. Lundqvist (Chalmers University of Technology, Göteborg, Sweden): Professors F. James (CERN, Geneva, Switzerland), A. Nobile (International Schoo r Advancefo l d Studies, ISAS-SISSA, Trieste . Rebb,C Italyd i an )(Bosto n University, USA), with the co-sponsorship of the International School for Advanced Studies (ISAS-SISSA, Trieste, Italy).
Purpose: To be a forum for discussion of the algorithms and methods most suitable for both specific problems and broader issues.
Programme: Topics: Monte Carlo simulation of critical phenomena. Monte Carlo renormalization group. Green's function Monte Carlo. Simulatio f fermionino c systems. Molecular dynamics. Computer studie f phaso s e transitions. Aggregatio growthd nan . Simulation of spin glasses. Acceleration techniques for critical slowing down. Computational methods for quantum field theories and particle structure. Simulatio f higno h energy phenomena.
Lectures: Surve f particlo y e method simulationn i s . Monte Carl d moleculaan o r dynamics studies of nucleation. Unified approach to molecular dynamics and density functional theory. Scientific simulation on the Connection Machine, improved lattice action and redundant operators. QCD with dynamical fermions. Neural networks as models of associative memories. Non- universal critical slowing down in Monte Carlo simulations. What can you learn by computing partition functions? Computer simulation of strongly interacting fermion systems. A general cluster updating metho r Montfo d e Carlo simulations. Gauge theorie r higfo s h temperature superconductors. Path-integral simulation f Lennard-Joneo s s solid d liquidsan s scalinA . g Ansatz e Swendsen-Wanfoth r g dynamics. Finite size effect n nucleationi s . Monte Carlo stud f isino y g model on quasicrystals. World prospects and activity on high performance computing. Monte
57 Carlo algorithm r many-fermiofo s n systems. Computer simulatio e wettinth f o ng transition. QCD-PAX, the Japanese lattice gauge project. Molecular dynamics simulation of chemical reaction. Simulatio parallen o n l processor base n multo d i microprocessor network. Monte Carlo renormalization group studies of spin models. Quantum Monte Carlo simulation of the two- dimensional spin 1/2 XXZ model. Computer simulation of conformational properties on n-butane liquid. Computer simulations of excitations in spin chains. Monomers, dymers, polymers and fermion determinants. Computer simulation of the ground-state properties of many-fermion systems.
Summarize e participatiodth datn o a n (Numbe f o scientistr y worlb s d regions)
World regions Developing Industrialized TOTAL Africa 2 2 Asia 4 3 7 Europe 9 20 29 North and Central America 1 12 13 South America 4 4 International Organizations 1 1 TOTAL 2 0 3 6 5 6
Director d Lectureran s s 23 Participants 33 Member states represented 24 International Organizations represented 1 Applications received 152
Title: ADRIATICO RESEARCH CONFERENC N "TOWARDO E E THEORETICATH S L
UNDERSTANDIN HIGF G O c SUPERCONDUCTORSHT "
Dates: 26 - 29 July 1988.
Organizers: Unde e chairmanshith r f Professoo p . LundqvisS r t (Chalmers Universitf o y Technology, Göteborg, Sweden): Professors E. Tosatti (International School for Advanced Studies, ISAS-SISSA d 1CTPan , , Trieste, Italy), M.P. Tosi (Universit f Triesto y d ICTPan e , Italy) u (AcademiL u Y d aan Sinica, Beijing, P.R. China d ICTPan , , Trieste, Italy)- co , wite th h sponsorship of IBM and the International School for Advanced Studies (ISAS-SISSA, Trieste, Italy).
Purpose: To concentrate on a critical overview of the major experimental results in this field and an in-depth discussion of the mechanisms leading to high temperature superconductivity.
Lectures: Recent progress in high T superconductors. Superconductivity and magnetism c
hign i c oxideshT . Treatmen f strono t g electron correlation n higi s c materialsT h . Anomalous
electronic propertie f higo s c superconductorshT . Experimental insight intmechanise oth f higmo h
TC superconductivity. ODLRO in various proposed models of high Tc superconductors. Binding of
holes with the effective single band Hamiltonian for CuO2 layers. Spin polaron pairings and high Tc superconductivity. Spin wave d superconductivityan s two-banA . d superconductor wit narroa h w band near e Fermth i level. Electronic propertie f stronglo s y correlated systems theoryB RV .n A : dimensions2 d overview. an BCS statvs B 1 B n i RV e. . RV stat.w RVB r mixene efo A : d valence systems? Holes in Cu-O planes: Exact diagonalization and renormalization group results. The
58
electronic structure of high T materials. Electronic properties and the nature of the c superconductivity state in the high Tc materials. Critical currents in high Tc superconductors.
Charge fluctuation in YBa2Cu3O7 from XPS and Auger spectroscopies. Symmetry of the 3d Ligand 9 hole induced by doping in YBa2Cu3O7.5. Photo-induced infrared absorption in 1-2-3 system. Spin correlation superconductinn i s g La2-xSrxCuO4. Spin correlation theid an sr interaction with charge carriers in La2-xSrxCuO4. Comparison of Hall number, hole concentration in high Tc
superconductors. Transport and magnetic properties of (Lai_Sr)CuO4 systems. NMR studies of x 2 hig superconductorsC hT . Elastic modulus, internal frictio d oxygean n n orderinx n Y-Ba-Cu-Oi g .
Elastic propertie f higo sc materialshT ; Cp (spec, heat) nea . c FermT r i liquid behavious it d an r breakdown in the 2-dimensional Hubbard model. Magnetic mechanism of the superconductivity.
Numerical simulation f higo s c superconductivityT h . Hole attractio n mori n e band extended Hubbard model. Antiferromagnetis 2-dimensionae th n i B RV d l man Heisenber g model. Pairing-bag in superconducting oxides. Magnetic frustration mode r superconductinfo l g oxides. Charge fluctuation pairine extendeth n i g d Hubbard model. Kondo lattice Hamiltonia r higfo c nT h superconductors. Strong electron-phonon coupling and polaron formation in metal oxides. Magnetic polaron d superconductivitan s n i Hubbary d model with intersite interaction. Macroscopic magnetic properties of YBaCuO crystals.
Short communications: Recent research e relatemechanisth o t d f higo m T h superconductivity: 17O NMR, angle-resolved photoemission anc d isotope effect. Electronic transfe f locao r l pair superconductivitn o s n metal-oxidi y e superconductors. Elastic straind an s enhanced critical temperatur coppen ei r oxide superconductors phonon O . n mechanis f higmo c hT superconductivity. Does high temperature superconductivity appeaphaseso tw n i r ? Non-collinear
antiferromagnetic structure in LaCuO. The Fermi surfaces of La(Sr)CO and YBCO. 4
Superconductin d minoan g r phase n Bi-Sr-Ca-Cu-i s O2 systems. Distorted flux lines behavioun i r type II superconducting spherical shell: application to high Tc superconductivity. New effect of critical temperature in non rare earth ceramic superconductors. The electron kinematic
interaction and high T superconductivity in transition metal compounds. Distribution of c superconducting phases in the Bi2Sr2CuOe- CaCuO2 system. Optical anisotropy of single crystal YBC n i infrareO d visiblan d e region. Effec f equilibratino t g temperatur e criticath n o el temperature of ceramic YBCO. Reformation of pairing theory due to quantum size effect. Effect of local symmetry on electron-phonon interaction in perovskites.
Summarized data on the participation (Number of scientists by world regions)
World regions Developing Industrialized TOTAL Africa 4 4 Asia 6 10 16 Europe 20 53 73 Nort Centrad han l America 1 19 20 South America 3 3 TOTAL 34 8 2 1 1 6
Directors and Lecturers 34 Participants 82 Member states represented 33 Applications received 284
59 Title APPLICATIOE :TH LASERF NO SURFACSN I E SCIENCE
Dates: 23 - 27 August 1988.
Organizers: Under the chairmanship of Professor S. Lundqvist (Chalmers University of Technology, Göteborg, Sweden): Professors P. Andresen (Max-Planck-Institut für Strömungsforschung, Göttingen, Federal Republic of Germany), H.-J. Freund (Ruhr-Universität Bochum, Federal Republic of Germany) and E.W. Plummer (University of Pennsylvania, Philadelphia, USA), wite co-sponsorshith h e Internationath f o p l Schoo r Advancefo l d Studies (ISAS-SISSA, Trieste, Italy).
Purpose: To bring together scientists with very diverse backgrounds, but with a common interest in the applications of lasers to surface science, in order to asses where the field is now, wher goings i t ei technicae , th wha e ar t l limitatio r break-throughno anticipatee b wha d n an sca t d e futurefoth r .
Programme: Topics: Non-linear processe surfacea t a s . Spectroscopy of adsorbed species. State selective adsorption and desorption experiments. Energy transfe t surfacesa r . Resonan non-resonand an t t desorption processes. Photochemical reactions at the surface. Time resolved surface reactions. Photoemission with lasers. Recent developments in lasers and laser detection schemes.
Lectures: Applications of lasers in surfaces science. General perspective of the theoretical advances and challenges of the application of lasers in surfaces science. Chaos in surface physics. Lifetimes of excited adsorbate levels at metal surfaces. Lasers in surface spectroscopy. State selective detection of desorbing molecules. Desorption of ablation from molecula r Waalde n s va rsystem lasersV U d s. an witRotationa R I h l dynamic f desorptioo s d nan direct inelastic scattering: NO/Pt(111). Laser induced desorption of NO from Pt(111): Dynamics of excitation and desorption. UV-photodesorption of NO from Pd(111). UV laser photodesorption of NO from the surface of condensed films: Translational and internal energy distributions. Photon stimulated desorption: What has been learned. Desorption induced by electronic transitions: Laser spectroscopy. Experimental and theoretical studies of desorption induced by electronic transitions. Energy distributions of molecules thermally desorbed from a surface. UV surface photodynamics: Charge transfer and fragmentation competition. Differentiating primary and secondary processes in electron- and photon-stimulated desorption using laser detection of desorbed neutral atoms. Femtosecond laser mass-spectrometry of molecules on surfaces. Laser- induced thermal, dynamic and field desorption of molecules. Atomic and molecular beam studies.
Vibrational excitation cause y electronicab d l effect n Oi s2 -Ag(111) scattering e structureTh . f o s monolayers of polar molecules physisorbed on single crystal surfaces of graphite and on xenon plated graphite. Theory of recombinatively desorption. Evidence for a molecular precursor state in Da desorption from Pd(100). Two photon photoemission. Femtosecond image-potential dynamics in metals. Time resolved photoemission spectroscopy of laser excited silicon using synchrotron radiation. The characterization of normally unoccupied surface electronic states by angle-resolved two photon photoemission. Time resolved study of surface recombination at Si(111 1 surfaces2x ) . Observatio f surfaco n e intervalley scatterin n GaAs(110)o g . Energy transfer at surfaces. Time-resolved measurements of vibrational relaxation rates (metal clusters). Laser studies of energy transfer at surfaces. Spectroscopy and diffusion of molecules on surfaces using laser induced desorption. Infrared surface spectroscopy: tunable laserd an s other radiation sourcee infraredth n i s . Laser induced reaction o dimensionstw n i s n A .
experimenta Hd OHe +O lan th kinetice formatio stud n th H reactioni f O t o yf P so n no . Dynamics 2 2
of CuF formatio2 n in the dry etching reaction of fluorine with a copper single crystal surface. Laser reaction n semiconductoo s r surfaces. Surface nonlinear optical processes. Theorf o y second harmonic generation at simple metal surfaces. Spectroscopy of electronic transitions at a
solid/solid interface by resonant three-wave mixing: CaF2/Si(111). Surface structure of cubic
60 ionic crystals studied by optical SHG. Probing the electronic and structural properties of thin metallic overlayer y SHGb s . Infinite barrier mode a metal t calculationa l G surfaceSH f o s . Dynamic screening at a surface of a NFE metal. Three-photon mixing at smooth Nobel metal surfaces: Beyond jellium. Time-resolved study of laser-induced disorder of Si surfaces. Fast- time resolved studies of pulsed laser heating of metals. Second harmonic generation probe of structur d energan e y transfer dynamic a meta n o sl surface. Tensor symmetrie d adsorbatan s e structure in second order nonlinear optical processes at surfaces. Tensor symmetries and adsorbate structure in second order nonlinear optical processes at surfaces. Infrared-visible spectroscopm su a molecula s a y r prob t interfacesa e . Resonan froG mSH t Ag(110): Metallic interband electronic contributions. Studies of kinetics of surface reactions using lasers. Molecular cluster calculations for the analysis of laser induced emission of electrons and ions
from the (111) surface of BaF2. Mechanisms of nonthermal photon-induced processes on solid surfaces. Laser n electro-chemistryi s .
Summarize e dparticipatioth datn o a n (Number of scientists by world regions)
World regions Developing Industrialized TOTAL Africa 1 1 Asia 1 1 Europe 40 40 Nort d Centrahan l America 41 41 South America 1 1 TOTAL 3 8 1 84
Directors and Lecturers 35 Participants 49 Member stales represented 14 Applications received 215
Title: ADRIATICO RESEARCH CONFERENC COHERENN EO T SOURCE FRONTIER SFO R SPECTROSCOPY
Dates Augus0 3 : Septembe2 - t r 1988.
Organizers: Under the chairmanship of Professor S. Lundqvist (Chalmers University of Technology, Göteborg, Sweden): Professors U.C. Bergquist (National Institut f Standardo e d an s Technology, Boulder, USA), G. Denardo (University of Trieste and ICTP, Italy), K.M. Evenson (National Institute of Standards and Technology, Boulder, USA) and M. Inguscio (Université di Napoli, Italy), wite co-sponsorshith h e Internationath f o p l Schoo r Advancefo l d Studies (ISAS- SISSA, Trieste, Italy).
Purpose: To discuss and compare the different schemes of generation in these two frontier regions (far UV and far IR) with particular emphasis to the applications in high resolution spectroscopy.
Programme: Topics: Atomi d moleculaan c r coherent spectroscope th n i y ultraviolet. Atomi d moleculaan c r coherent spectroscopr fa e th n i y infrared. Spectroscopy of trapped particles. Radiative cooling.
61 Quantum jumps. Laser photoionization studies. Squeezed field states.
Lectures: Light sources below quantum nois d applicationsan e . Beyon e shot-noisth d e limit: Generation and applications of squeezed states of light. Soliton laser. Optically stabilized diode lasers. Diode-pumped crystal lasers and frequency extension by nonlinear optics. Color
center lasers. Difference-frequency and color-center laser spectroscopy of van der Waals
complexes. Difference frequency laser spectrometer using Li I O and observation of H + hot 3 r infrarefa d bandsan d spectroscopR I . f moleculao y r ionclustersd san . Tunabl r infrareefa d laser 3 spectroscopy. Far-infrared heterodyne spectroscopy. Applicatio f infrareo n d laser sourcee th o t s spectroscopy of molecular and cluster beams. Infrared-radiofrequency double resonance
spectroscopy of CH3F using a color center laser. Generation of ultra-stable cw optical sources. Nonclassical radiation from one-atom oscillators. Experiments with laser-cooled trapped ions. Spectroscopy of heavy trapped ions. Laser control of atomic motion. Laser cooling of atomic helium. Applicatio f laseo n r coolin o atomit g c frequency standards. Vacuum ultraviolet laser source d spectroscopyan s . Vacuu coherenV mU t spectroscopy. Generatio f radiatioo n e th n i n extreme UV by upconversion in a gas discharge. Development of free-electron lasers for the extreme ultraviolet. High resolution spectroscopy of atomic hydrogen Rydberg states. High resolution spectroscop f atomiyo c hydrogen. High resolution spectroscop f atomiyo c discharges.
Summarized data on the participation (Number of scientists by world regions)
World regions Developing Industrialized TOTAL Africa 1 1 Europe 1 34 35 Nort Centrad han l America 16 16 South America 2 2 TOTAL 4 5 0 5 4
Directors and Lecturers 29 Participants 25 Member states represented 13 Applications received 138
62 OTHER RESEARCH
Dates: Throughou yeare th t .
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 researc periodn hi s whe activito n schedules i y thein di r field f interesto s .
Summarized data on the participation (Number of scientists by world regions)
World regions Developing Industrialized TOTAL Africa 34 34 Asia 73 3 76 Europe 14 21 35 Indonesi Oceanid aan a 3 3 Nort Centrad han l America 4 4 8 South America 14 14 International Organizations 4 4 TOTAL 1 42 3 2 1 74
Figures also include short-term visitors coming for organizational activities only.
63 LONG-TERM SCIENTIFIC VISITORS
Research in fundamental physics, condensed matter physics and mathematics is carried out throughout the year. The tables below show the number of scientists who were invited to tak ee researc th par 3 monthn i tr hd fo longe an s n 1988i r , includin e scientistgth s workinr fo g the Microprocessor Laboratory.
Table I
Field of interest Scientists % vs. total Man/Months % vs. total Preprints
Fundamental physics 45 36.59 284.85 39.39 64 Condensed matter 25 20.33 132.25 18.29 14 Mathematics 36 29.27 206.54 28.56 59 Other 17 13.82 99.54 13.76 1
TOTAL 123 723.18 1 38
Table
Areas Numbe f o Scientistr s Numbe f o Man/Monthr s Dev. Ind. Dev. Ind.
Africa 15 _ 78.76 _ Asia 53 4 282.02 21.85 Europe 12 12 72.47 78.48 Indonesi Oceanid aan a 2 21.4 North and Central America 5 2 22.1 16.35 South America 18 - 129.75 -
TOTAL 1 03 20 585.10 138.08
GRAND TOTAL 1 23 723.18
64 MICROPROCESSOR LABORATORY
e activitie e Th Microprocessoth f o s r Laboratory, sponsore e Uniteth y b dd Nations University, were articulated along the following lines:
(1) Training activities in microprocessors and technical support given to these activities;
(2) Activities of the joint ICTP/INFN (Italian National Institute for Nuclear Physics) Microprocessor Laboratory, including realization of technical projects.
(1) Training activities
The Laboratory had a very heavy load of activities. The following training and collaboration-in-training activities took place: (a) The Laboratory organized and held the Adriatico Conference on the Impact of Digital Microelectronics and Microprocessors on Particle Physics (28 - 30 March) using the ICTP scientific, administrativ d housinan e g facilities. (b) It also organized and held the Second Latin American College on Microprocessors in San Luis, Argentina (11 - 29 April). The course used the equipment of the Laboratory that was shipped from Trieste to the Universidad Nacional de San Luis with the help of the United Nations Development Programme (UNDP). Forty-five scientists attended the course whose Directors were Prof . VerkerC . k (CER d ICTP d IngNan an ) . Migue e Rosad l s (Universidad Naciona Luis)n Sa .e d l ) Righ(c t aftee collegth r n i Argentinae a Worksho, n Microprocessoo p r Application i n Instrumentatio s hel n Bogotwa i d a unde joine th r t auspice f e shippinGIFo s Th e .th f go equipment from Buenos Aires to Bogota was done through UNDP. Forty-five scientists attended the college under the direction of Prof. A. Ortiz (Centro Internacional de Ffsica, Bogota, Colombia Profd . Colavitan )A . a (ICTP). ) Unfortunately(d o locat e l du organizationa, l problem n Côti s e d'Ivoire e "Firsth , t African College on Microprocessors: Technology and Applications", which was to be held in 1988, beew no n s postponeha 1989o dt . n NovemberI ) (e e Laboratorth , y starte organizatioe dth e collegeth hele f b no do st during 1989 and/or early 1990. They are: ) "Firs(1 t African Colleg Microprocessorsn eo : Technolog Applications"d an y hele b n di o t , Accra, Ghana, from January 9 to 27; regulae Th ) r (2 colleg microprocessorn o e s hel Triestn di e every second year; (3) VLSI design six-week course (Trieste) in conjunction with INFN; (4) Telematics course (Trieste); firse Th t advance) (5 d cours softwarn ei e techniques.
(2) Activities of the joint ICTP/INFN Microprocessor Laboratory including technical projects
(a) General activities
equipment:New Mitac-Halle new Laborator The two y has y80386/2 powereMhz 0 d stations equipped with multisynch screens and mice. These stations are used for CAE systems and graphic software development. The Laboratory has also incorporated two DEC Vax stations 2000 wit" coloh19 r screens, use r VLSdfo I design with Solo 120softwareE 0CA . Three new CAE software packages, PCAD, and XILINK (Silo) were installed in different computer coveo st neee th rf differen do t projects bein e Laboratorygth carriet a t dou . Two Hewlett Prodraf n plotterpe t s were incorporate VLSe th r I fo dactivity .
65 (b) Technical projects (extended reports exist for each of these projects)
( 1 ) Construction and testing of a 32-bit single board computer. (2) Development of graphic software, under Microsoft's Windows, to control a Burr and Brown A/DD/a IBM compatible card. ) Developmen(3 f graphio t c software, under Microsoft's Windows Operating System written to control a Multichannel Analyzed IBM compatible board. (4) Development of a Multichannel Analyzed board using a Digital Signal Processor as on board "sequencer" and resident processor. ) Developmen(5 Rosy/Flea f o t OS-d an x9 hardwar softward ean e compatible development station. ) Desig(6 Vera f no y Large Scale Integrated circuit using optimized gate array techniques for a Telephony Signal Handler. (7) Software computers and self-healing.
Summarized data on the participation (Numbe f o scientistr y worlb s d regions)
World regions Developing Industrialized TOTAL Africa 1 1 Asia 5 5 Europe 1 1 South America 6 6 TOTAL 1 2 1 1 3
66 NETWOR ASSOCIATF KO E MEMBERS AND FEDERATED INSTITUTES
REPORT ON THE ASSOCIATE MEMBERSHIP SCHEME IN 1988
Reports on the Network of Associates and Federated Institutes are available on request.
- 1REGULAR ASSOCIATES
Associate Members are scientists from and working in developing countries who are appointed, upon recommendatio Scientifie th f no c Council perioa yearx r si f fo ,ds o during which the e entitlethrey ar y pa eo dt researc h ICTPe visitth o st . Eac f sucho h visits shoul t exceedno d 90 days but should last more than six weeks during the appointment period. Then, if the 3x90 = day0 27 s hav t beeeno n fully utilized durin 6-yeae gth r period remainine th , usee gb daydy ma s 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 scientist residencn i s attend ean d workshops, conference r extendeso d courses. The Centre expects that they will be engaged, in their home countries, in enhancing physics and mathematics education at the secondary, polytechnical and college levels as well as teaching and researc universite th t ha y level. Moreover, they should alsy attentionopa thein i , r research work, to problems of physics and mathematics connected with their locale. In 1988, the list of appointed Associates included 430 scientists. Fifty-eight appointments expired at the end of 1987, 155 new Associate Members were appointed and 14 appointments were extended. One hundred and sixty Associate Members (37.21%) came to the ICTP for a total of 351.39 man/months with an average duration of stay of 2.19 man/months (nearly the same averag n 1987)i s a e . e SomAssociatesth f eo r variouf coursfo o , d san e reasons like academic requirement r familo s y situations, brea e 2-yeath k r cycl y anticipatinb e r differrino g g e timinth f theigo r visits with respectime th e o t thet y would normall expectee b y e ICTPth t da . 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 1988 and Number of Associates who Actually Came, by Geographical Areas
Areas Number of Associates Number of Visits # % vs. total Visits % vs. total Man/Months % vs. total
Africa 1 12 26.05 42 26.99 89.79 25.55 Asia 213 49.53 81 50.31 181.19 51.56 Europe 17 3.95 1 0.61 1.94 0.55 Indonesi Oceania& a 7 1.63 3 1.84 5.45 1.55 Nort Centra& h l America 17 3.95 8 4.91 20.40 5.81 South America 64 14.88 25 15.34 52.63 14.98
Total 430 1 60 351.39
67 TablI I e
Numbe f Associateo r s Entitle a Researc o t d h Visi n I 198t 8 by Scientific Fields of Interest
Fields of interest Number of Associates Number of Visits # % # %
Fundamental physics 70 16.28 33 20.25 Condensed matter 85 19.77 49 30.06 Mathematics 65 15.12 25 15.63 Physic energd san y 81 18.84 17 10.43 Physic environmend an s t 48 11.16 18 11.25 Living state 29 6.74 14 8.59 Applied physic higd san h tech. 52 12.09 4 2.45
Total 430 1 60
Table III
Summary
1. Regular Associates appointed in 1988...... 430 2. Regular Associates appointed in 1987...... 31 9 . 3 Appointment f 1987...... 5o d s en expire e th t da 8 4. New appointments starting in 1988...... 1 55 5. Extensions and renewals starting in 1988...... 1 4 6. Member states represented in 1988...... 67 7. Regular Associates visiting ICTP in 1988...... 1 60 . 8 Numbe f man/months...... 351.3o r 9 . 9 Average duratio f stay...... 2.1o n 9 man/months 10. Number of preprints produced ...... 1 04
e intellectuaTh l benefits which Associates derive from their research perioe d th visi t a t ICTP are numerous. Many of them succeed in publishing a paper. This year, 104 preprints were prepared by Associate Members, either alone or in collaboration with others (an average of 0.65 papers/Associate against 0.87 paper/Associate in 1987). Associates, while at the ICTP, have an opportunity to re-orient their research, to collaborat a distance 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 o improvt , e their teachin t theia g r home universities.
- SENIOR 2 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 or in academic training, may be appointed Senior Associates of the ICTP upon recommendation of e Scientifith c Council e duratio appointmene Th th . f no year6 s i t s during which dray thema wy fro r ma funeac fo f f 4,00 theo do h$ m US 0e use b whicr subsistenc fo n d ca h d travean en i l relation to their visit to the ICTP. Senior Associates come to the Centre for various reasons. Some take advantage of their visit r carryinfo s t theiou g r research since then concentratca y n theio e r work being relieved
68 from their administrative duties. Others come for boosting the collaboration between their colleague scientiste th ICTPe d th san f so . Others take advantag f theieo r bein Europn gi como et e to the ICTP in order to attend a workshop or conference which can be interesting for themselves or their collaborators, or to give a seminar. 1988n I ICTe th , P lisf Senioo t r Associates include name8 d5 s fro Membe2 m2 r States. Ten Senior Associates representing 9 Member States came for a total of 12.28 man/months. Therefore, the average duration of a research visit was 37 days (1.23 man/months). They produced 5 preprints and came from the following geographical areas:
Asia...... 5 Europe...... 1 South America...... 4
- JUNIOR 3 ASSOCIATES
Junior Associates are selected among those participants in the ICTP extended courses and workshop woro t institutionswh a k developinn i s g countries with poor library facilities JunioA . r Associate is appointed for four years and is entitled to a 350 US$ grant for buying scientific books and/or subscribin o scientifit g c periodicals which mus e madb t e availabl o his/het e r colleagues expiratioe th t A . f theino r appointments, Junior Associate consideree sar d candidates Regulae toth r Associate Membership Scheme. n 1988I scientist8 ,14 s held Junior Associate appointments. Table I shows the distribution of the Junior Associates by field, while Table II shows their distribution by geographical areas.
Table I
Distribution of Junior Associates by Fields
Fields Junior Associates . tota%vs l
Fundamental physics: Elementary particles 5 3.38
Condensed Matter: Atomic physics 8 5.41 Solid state 33 22.30
Mathematics: Mathematics 26 17.57 Mathematical ecology 1 0.68
Physics and energy: Nuclear physics 8 5.41 Plasma physics 5 3.38 Renewable energies 1 1 7.43
Physics and environment: Climatology/meteorology 1 0.68 Geophysics 22 14.86 Soil physics 10 6.76
Physics of the living state: Biophysics 6 4.05 Medical physics 1 0.68
Applied physics: Communications physics 2 1.35 Microprocessors 9 6.08
TOTAL 1 48
69 Table II
Distribution of Junior Associates by Geographical Areas
Areas Junior Associate . totavs l% s
Africa 75 50.68 Asia 62 41.89 Indonesia and Oceania 1 0.68 Nort Centra& h l America 5 3.38 South America 5 3.38
8 14 TOTAL
4 - FEDERATION AGREEMENTS
paste e th ICT Ath ,n i sP concluded Federation Agreements with institution developinn i s g countries whereby these institution y senma 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 agreements is also concluded with European institutions, mainly in Eastern 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. e term Th f e somAgreemento sth f eo t varianc a e ar sn ordei e o takt r e particular local conditions into account. Special Agreements are concluded with institutions from Argentina, Brazil, Kuwait, Pakistan, Qatar and Saudi Arabia. e utilizatio Th e resourceth f o n s e Standaroffereth y b d d Federation Agreements i s summarize Tabln di . eI
Table I
Standard Agreements
1. Agreements proposed...... 334 2. Agreements signed...... 334 . 3 Agreements utilized...... 3 9 .1 . 4 Scientist benefiteo swh d froAgreements...... 47e mth 3 . 5 Member states which benefited fro Agreements...... 4e mth 7 6. for a total number of man/months...... 428.70 7. Total man/months allocated for the 193 agreements utilized... 61 9.72 8. Utilization rate...... 69.18
FoSpeciae th r l Agreements utilizatioe th , resourcee th shows f a no s Tabln ni swa e
70 Table II
Special Agreements
Institutions Visitors Days Man/mon
1. Kuwait Foundatio Advancemene th r nfo f Scienco t e 17 451 14.83 2. Kuwait University a) from Ara Islamid ban c Countries 4 127 4.18 b) from Kuwait University 3 19 0.62 3. Islamic Republic of Iran 2 71 2.33 4. Universit f Qatao y r 4 76 2.50 5. CNPq, Brazil 3 124 4.08
TOTAL 33 868 28.54
Table III shows totals for Standard and Special Agreements.
Table III
Type of agreement # Visitors # Man/Months
Standard 473 428.70 Special 33 28.54
Total 506 457.24
Not - e457.2 4 man/months represent 13.05 totae th f l% o man/month r ICTfo s P activities held in Trieste.
71 PHYSIC DEVELOPMEND SAN T
Title: PHYSIC DEVELOPMEND SAN T PROGRAMME
Dates: Throughout the year.
Organizers: Professor H.R. Dalafi (ICTP), with the full participation of the Third World Academy of Sciences in the programme Science, High Technology and Development
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 research and its applications to the development needs of their countries.
Lectures:
General Lectures: The metrological basis of relativity. What keeps Tibet up?
Colloquium: Quantum field theory from classical particle trajectories; 40 years of path integration dedicated to R.P. Feynman (1918-1988). Artificial intelligence: status and promises. Theories of the electron (origin of spin, excited states, passage to strings and membranes). Theorie e neutrin th e neutrin f th o s f (i o o wer tinea y little magnet...) electromagnetie Th . c model of matter - How to build particles from electrons and neutrinos. Observational cosmology: Determining the structure of a curved space-time. Quasars as accreting supermassive black holes. Artificial photosynthesis. The origin of creative ideas. Magnetism in medicine. Evolving phases in quantum mechanics: Theory and experiment. Yang-Mills fields and 4-manifolds.
Science, High Technology Development:d an Europeae Th n Physical Societ physicd yan n si developing countries. Some thoughts about computer technology and development. Advances in personal computer r scientififo s c applications e TriestTh . e Synchrotron Laboratory. IAEA programm d activitiean e n radiatioi s n protection. Reflection n opticao s l science. Healtd an h environmental consequence Chernobye th f so acciden P NP l USSRn i t . Researc communication hi n physics for national development. What a planning commission can do in a developing country. Ho internationan wa l organizatio heln nca p developing countries. Unique importanc f developineo g countries in the study of the environment. Comments on the role of physics for development. Trends in environmental health problems in developed and developing countries. Science of food - Some thought r physicistsfo s . Fusion scientifia , c perspective e importancTh . f earto e h sciences r developinfo g countries e rol f computeo eTh . r developmentfo r .
Summarize e participatiodth datn o a n (Number of scientists by world regions)
World regions Developing 1 nd ustria 1 Ized TOTAL Africa 1 1 Asia 1 1 Europe 6 6 Nort Centrahand l America 4 4 South America 2 2 International Organizations 1 1 TOTAL 4 1 1 1 5
In addition to these invited lecturers, 8 scientists participating in other programmes also gave lectures.
72 ICTE TH P DONATION SCHEME
BOOK DONATION PROGRAMME
Despite cash flow difficultie e Centreth t a s , durin e yeath g r 1988, withi e frameworth n k of this Programme, the following material from ICTP was distributed among more than 500 institutions in nearly 100 developing countries: 13,200 journals 3,440 books 4,250 proceedings 1,500 newsletters and scientific journals of general interest 4,350 booklets in various languages. In addition, during the same period, a few thousand scientific journals (all complete sets) were offered to ICTP by 33 donors in Europe and the USA and sent to 40 institutions in developing countries.
EQUIPMENT DONATION PROGRAMME
During the year 1988, within the framework of this Programme, about 50 items of scientific equipment were also distributed to 5 universities in developing countries. Moreover n Novembei , r 198 8groua f scientisto p s from different Third World countries visited CER selected Nan d more thaitem0 n10 f equipmen so varioun i t s scientific discipliner sfo laboratories in developing countries. The actual value of this equipment can be estimated as being over US$ 100,000.
73 HOSTED ACTIVITIES
N. Title Dates Organizer 1 From Protein Structure to Protein 21 - 25 March International Centre for Genetic Engineering Engineering and Biotechnology
2 Large Scale Structure and Motions of the 6-9 April Osservatorio Astronomico Universe
3 The First Edward Bouchet International 9-11 June Black American Physicists Conferenc Physicn eo Technologd san y
4 Meetin Addreso gt Problee sth f Effectivmo e 19-20 ICTP Offic f Externao e l Activities North-South Collaboratio Researcn i d han Septembe r Educatio Physicn i Mathematicd san s
5 Role of Women in the Development of Science 3 - 7 October Third World Academy of Sciences Canadiad an n Internationa Technologd an lThire th dn yi World Development Agency
6 Workshop on Increasing Flow of Scientific 31 October - 1 Third World Academy of Sciences Literature to Third World Institutions November
7 Inventor f Scientifio y Novembe2 c Institution e th r n i s Third World Academ f Scienceyo s Third World
74 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 yo Triest d ICTPean , Trieste, Italy) . DenardG , o (University f Triesto d ICTPean , Trieste, Italyd an ) E. Tosatti (International School for Advanced Studies, ISAS-SISSA, and ICTP, Trieste, Italy), in collaboration with Advisory Committees in each of the fields concerned. The Italian National Commissio r Nucleafo n d Alternativan r e Energies (ENEA, Rome, Italy) offere a speciad l contribution.
Purpose: To give participants in ICTP activities the opportunity of widening their experience by becoming directly involved in different branches of physics with the research work of laboratories at Italian universities, governmental and industrial research centres.
Programme n 1988I : grant6 9 , s were awarded. Counting also those whose fellowships starte e yeath d r before 0 scientist17 , s representin 1 developin3 g g Member States worke- d with grants from the Centre - in 136 Italian laboratories for a total of 1,093.76 man/months. The research subjects included:
Atomic molecular physics and lasers Biophysics Climatology and meteorology Communication physics Computational physics Condensed matter physics Energies Geophysics Medical physics Microprocessors Plasma physics Soil physics
A detailed repor s availabli t requestn eo .
Summarize e participatiodth datn o a n (Numbe f o scientistr y worlb s d regions)
World regions Developing Industrialized TOTAL Africa 21 151.85 Asia 100 653.59 Europe 20 113.24 North and Central America 9 39.15 South America 20 135.93 TOTAL 170 1093.76
75 ACTIVITIES AND SPONSORED PROJECTS OUTSIDE THE 1CTP
REGIONAL ACTIVITIES CO-SPONSORE CENTRE TH Y DB E
A externae reporth n o t l activitie n 198i s s availabl8i requestn eo .
In 1988 e Internationa,th l Centr r Theoreticafo e l Physics throug s Officit h r Externafo e l Activitie table th es co-sponson i below st wa activities4 ou addition I t 10 . f se o r s thato nt a ,4 1 , fellowships for visiting scholars/consultants came into operation.
22 activities in Africa (Algeria, Benin, Côte d'Ivoire, Egypt, Ghana, Kenya, Mali, Nigeria, Senegal, Sudan, Tanzania, Tunisia, Zimbabwe)
43 activitie n Asii s a (Bangladesh, China, India, Indonesia, Iran, Iraq, Jordan, Pakistan i LankaSr , , Hong Kong, Malaysia, Philippines, Syria, Thailand, Vietnam)
35 activitie n Latii s n America (Argentina, Barbados, Bolivia, Brazil, Chile, Colombia, Costa Rica, Cuba, Mexico, Peru, Puerto Rico, Trinidad)
14 Visiting Scholars to 13 countries.
76 PRIZES
Annual ICTP Prizes were create e Scientifin 198i dth y 2b c Councie Centrth f n o i el recognition of outstanding contributions to physics and mathematics by scientists from and working in a developing country. They consist in a medal, a certificate and a 1,000 US$ cheque. One Prize is awarded each year. Until now, the Prizes have been awarded in honour of the late Alfred Kastler (France), Nobel Prize 1966 and Chairman of the Scientific Council from 1970 to 1983 late th e, Manuel Sandoval Vallarta (Mexico), Chairma Scientifie th 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 ] v (USSR) greaa , . t W ICTPfriene th d f dan o , Heisenberg, Nobel Prize 1932. Posters announcing the Prizes are circulated through the Centre's mailing list.
WERNER HEISENBERG PRIZE
September29 1988
e 198Th 8e Internationa Prizth f o e l Centr r Theoreticaefo l Physics (ICTP, Trieste, Italy- ) named this time aftee latth re Werner Heisenberg, Nobel Laureat r physicfo e s 193s wa 2 - awarded . J.NDr o .t Onuchi c fro e Universitm th o Paulo Sä f o ,y Brazil n recognitioi , s hi f o n contributions to biophysics. Dr. Onuchic works on the theory of electron transfer reactions with applications to biology and chemical systems. For calculating the rates of these reactions, he has developed new theoretical model techniqued an s s which permi bettea t r understandin f fundamentago l questions in the dynamics of reactions in condensed matter such as adiabaticity criteria, quantum friction and quantum resonances. These models were very useful to address the question of mode- specificit biophysican i y l reaction shoo t importance d wth an s f quantueo m effectprimare th n i s y event f bacterio s a photosynthesis. More recently, using some ideas from photosynthesis, Dr. Onuchic and his colleagues have propose ddevica n moleculai e r electronics, "Shift Register Memory" which integrates designed electronic onto a silicon microelectronic substrate.
DIRAC MEDALS
August8 1988
To honour one of the greatest physicists this century and a staunch friend of the Centre, the International Centre for Theoretical Physics instituted two Paul Adrien Maurice Dirac Medals. These Medals are awarded yearly both to a senior and to a younger physicist, on Dirac's birthda Augus 8 contributionr y- fo - t theoreticao t s l physics. The selection committee includes Professors S. Lundqvist, R. Marshak, J. Schwinger, L. Hoven Va . WeinberS , Abdud gan s Salam Dirae Th c. t awardeMedalno e sar Nobeo d t l Prizf eo Wolf Foundation Prize winners. The 1988 Medals were awarde Professoro dt s Efim Samoilovich Fradkin (Lebedev Physical Institute, Moscow, USSR) and David Gross (Princeton University, Princeton, New Jersey, USA).
77 Efim Samoilovich Fradkin was honoured for his many fruitful contributions to the developmen f quantuo t m field theor d statisticsan y . Amon gs earl hi thes ye ar ewor n o k functional methods including his formal solution to the Schwinger-Dyson equations for the Green's functions of interacting systems. This result has become a standard part of modern quantum field theory. Independentl f Takahasho y discoveree h i generalizee dth d Ward identities for electrodynamics. These identities and their generalizations for non Abelian gauge theories are basic to the understanding of local symmetries. In his work on the Schwinger-Dyson equations, Fradkin drew attentio e zero-chargth o t n e problem a potentia, l inconsistencn i y Abelian gauge theories whose later resolution in the non-Abelian theories led to the discovery of asymptotic freedom same th t eA tim. Schwinges ea Nakanod an r , Fradkin constructe dEuclideaa n formulation of quantum field theory, a development which was to have far-reaching implications e developmenfoth r f statisticao t l physic d strinan s g theory s contributionHi . e th o t s quantization of relativistic systems with constraints are widely recognized. This work culminated in the Batalin-Fradkin-Wilkovisky quantization method which is used both in quantum fieltheore th d f extenden theori o y d yan d objects suc strings ha membranesd san . David Gros s honoure s wa fundamentas hi r fo d l contribution e understandinth o t s f o g nuclear force t shora s te theor distanceth f o superstringst o y d an s . Together wit . WilczeF h k and, independently, H.D. Politze G.Hd an r .t ' Hooft discoveree h , e mechanisdth f masymptotio c freedom in non Abelian gauge theories. This discovery, which accounts for the phenomenon of scalin n i deeg p inelastic interactions s e centradevelopmenth wa , o t l f o quantut m chromodynamics as a viable model for the nuclear force. His invention, together with Harvey, Martinec and Rohm, of the heterotic superstring model enlarges the theoretical understanding of strin s gprovide ha theor d a an gready t stimulu o researct s n thii h s s bolsubjectit dy B . generalization fro e picture relativistimth th f o e c strina geometrica s a g l object embedden i d spacetime e heterotith , c model, two-dimensionaseea s na l conformai field theory whose d lefan t right-moving mode e qualitativelar s y different s i abl , o account e r chiralitfo t n particli y e physics. This opened the way for a new understanding of the nature of spacetime and the unificatio f elementaro n y forces.
78 PART III
PUBLICATIONS ISSUED IN 1988
. N Date f o Activits y Titl f o Proceedinge s Publisher Pages 1 1986, 13-24 January Technology, Characterization World Scientific 319 Propertiesd an f Epitaxialo Publishin. gCo Electronic Materials (WSPC), Singapore
2 1986, 21 April - 16 May Physical Climatology for Solar WSPC 1,086 and Wind Energy
3 1986 1 ApriJun3 2 ,1 - el Order Chaosd an Nonlinearn i Plenum Publ8 . Co.48 , PhysicalK U Systems
4 1986, 11-16 August Nuclear Gamma Resonance2 30 WSPC Spectroscopy
5 1986, 11-13 September Spinors in Physics and WSPC 354 Geometry
6 1986, 24 November - 12 Mathematical Ecology WSPC 779 December
7 1987, 1-11 April Superstrings' 7 8 2 42 WSPC
8 1987, 27 April - 1 May Fibre Bundles: Their Use in WSPC 175 Physics
Workshopd 9 3r 1987 Perspectivesn o , 6 18-269 y 2Ma WSPC in Nuclear Physics at Intermediate Energies
10 1987, 25 May - 19 June Small Plasma Physics WSPC 383 Experiments
Jun9 1 - e 1 y 1 1987Ma Cometary 5 ,2 Solard an Plasma4 36 WSPC and 9 -11 June Physics
79 contd.
. N Date f o Activits y Titl f o Proceedinge s Publisher Pages 12 1987, 8-19 June Proceedings ICFAe th f o School WSPC 532 on Instrumentation in Elementary Particle Physics
13 1987, 23 - 26 June Undulator Magnets r fo WSPC 268 Synchrotron Radiation Freeand Electron Lasers
Jun9 2 Augus7 , e- 1987 t 1Superstrings,4 Unified Theory WSPC 653 Cosmologyand '87
15 1987, 5 - 8 July High Temperature WSPC 508 Superconductors
16 1987, 11-14 August Interatomic Forces in Relation Philosophical 283 to Defects Disorderd an n i MagazinK U , eA Condensed Matter
1 7 1987, 1 - 4 September Path Summation: Achievements WSPC 512 Goalsand
1 8 1988, 3-17 January, Superstrings and Grand WSPC 500 Bhubaneswar, India Unification
19 1988, 28-30 March The Impact f Digitalo WSPC 331 Microelectronicsand Microprocessors Particleon Physics
20 1988, 20 June - 29 July Towards e Theoreticalth WSPC 1,323 and 26 - 29 July Understanding of High Temperature Superconductors
proceedinge Th f anotheo s t print a activitie7 r e .ar 8 s hel198 n di
80 PREPRINTS AND INTERNAL REPORTS
Number of preprints and internal reports issued in 1988: 428
PREPRINTS AND INTERNAL REPORTS IN FUNDAMENTAL PHYSICS
Authors Title ICTP Serial Number
1. A.Y. Shiekh e criticaTh 1 l dimensio r strinnfo g theories.
2. A.O. Barut The spinning minimal surfaces without the Grassmann 2 . PavsiM c variables.
. A.O3 . Barut Path integral formulation of quantum electrodynamics from 4 I.H. Duru classical particles trajectories.
4. E. Bergshoeff A quantum consistent supermembrane theory. 5 E. Sezgin Y. Tanii
. BergshoefE . 5 f Singletons, higher spin masslesse stateth d san Abdus Salam supermembrane. E. Sezgin Y. Tanii
. NicolaH . 6 i Conformally invariant supersymmetri7 c field x theorie P S n o s E. Sezgin suped an r1 p-branesS . Y. Tanii
. 7 A.Y. Shiekh The string without ghosts. 9
8. L. Baulieu Open BRST algebras, ghost unificatio strind nan g field 1 theory 1 . . BergshoefE f E. Sezgin
9. L Micu Relativistic quark 2 mode1 r stronfo l g processes.
10. S.I. Azakov Group integrals in the lattice QCD with Susskind fermions. 1 3 q Hu . M . 11 Manifestly fermionic gauge covariant quantization of massive 1 4 superparticle.
12. S.l. Azakov One-link integra lattice th n ei l QCD: 5 Stron 1 g coupling. E.S. Aliev
13. H.R. Hoorani Strangeness production in quark-gluon plasma. 25 K.A. Siddique
. A.O14 . Barut The remarkable algebra SO*(2n), its representations, its 26 A.J. Bracken Clifford algebra and potential applications.
. H.R15 . Hoorani Productio7 2 f J/ no quark-gluon yi n plasma.
81 . AboighaseH . 16 m How to test the special theory of relativity on rotating earth. 44 M.R. Khadjehpoor R. Mansouri
17. F. Benatti Operations involving momentum variables in non-Hamiltonian 45 G.G. Ghirardi evolution equations. A. Rimini T. Weber
18. E. Gava 1 5 Modula looo r invarianctw p e vanishinth d e th ean f go R. lengo cosmological constant. . SotkoG v
. 19 A.Y . Shiekh Second class constraint theid san r eliminatio quantue 2 th 5 n i m theory.
. MansourR . 20 i Test theory of special relativity. What it is and why we need 55 it.
21. D.L Wiltshire Black hole string-generaten i s 6 5 d gravity models.
22. Bing An Li Coupling effec rc-n i t N scattering withi e Skyrmnth 9 e5 model. n ZhanMa i gMe
. SamiullaM . 23 h U(1x 0(5) ) electroweak gaug0 6 etriggerine theorth e d th an yf go Cabibbo-rotatio t ' Hooft-Polyako y nb v monopole.
24. M. Rakowski Connections on vector bundles over super-Riemann surfaces. 62 G. Thompson
. O.P25 . Dayi A note on the BFV-BRST operator quantization method. 64
. KaluzM . a26 5 6 Lepton systems a s f Dirao s c particles. N. Mankoc Borst n i k
. BergshoefE . 27 f 0 7 On spinning membrane theories. E. Sezgin P.K. Townsend
28. A. Pramudita QC2 D7 short distance enhancemen yy» - . L K n i t
29. V.K. Dobrev classificatioOe n3 th 7 f modulano 2 = r invariantN e th r sfo A.Ch. Ganchev twisted superconformai algebra.
30 . l Bar. s Central extension f areo s a- preservin g membrane agebras7 7 . C.N. Pope E. Sezgin
31. J. Gamboa Ground statd supersymmetrean f generallo y 8 y7 covariant . ZaneliJ i systems.
32. R. Mola A nature for gauge and Higgs fields. 79
33. R. Mola geometre th n O r non-Abeliayfo 0 8 n gauge fields. V.M. Pyzh
34. A.O. Barut Equivalenc spinnine th f eo g superparticle description2 8 s with M. Pavsic Grassmann variables or with C-number spinors.
82 35. E. Abdalla Quantization procedure for non-Abelian chiral bosons. 85 M.C.B. Abdalla
. lengR o. 36 Modular invarianc cosmologicae th d ean l constan loopso 6 8 tw t .a t
o ll i 37Ke . Correlatio superconforma2 n= functionN e th n i s i field theor8 8 y corresponding to a Calabi-Yau compactification.
38. V.F. Mukhanov Quantum theory of cosmology perturbations. 90
39. V.P. Frolov Black holes as possible sources of closed and semiclosed 91 M.A. Markov worlds. V.F. Mukhanov
. HussaiF . 40 n Massive gage fields of any spin and symmetry. 94 P.D. Jarvis Thompso. G n
. PearlP . e41 Combining stochastic dynamical state vector reduction with 99 spontaneous localization.
42. D. Birmingham Supersymmetric instantons and topological quantum field 100 M. Rakowski theory. G. Thompson
43. D. Birmingham Topological field theories, Nicolai map BRSd san T quantization1 10 . . RakowskM i G. Thomspon
. ArdalaF . n44 Modular invariant partition functions for toroidally 102 H. Arfaei compactified bosonic string.
. ChristodoulakiT . 45 s Geometr space th f geometriesn eo yo . 103 . ZanellJ i
. SamiullaM . 46 h 0(5) x U(1) electroweak gauge theory and the triggering of the 107 neutrino oscillations by 't Hooft-Polyakov monopole (Revised version).
47. G.G. Ghirardi Spontaneous localization of a system of identical particles. 1 08 . NicrosinO i A. Rimini . WebeT r
48. Abdus Salam Astroparticle physics (1988). 109
49. E. Bergshoeff N = 8 supersingleton quantum field theory. 111 Abdus Salam E. Sezgin Y. Tanii
Da. F . y50i O . Operator quantizatio e massivth f no 9 e1 1 superparticle.
51. S. Caicedo Geometrical origin of supersymmetric gauge theories. 123 R. Gambini
. P.S52 . Srivastava TCP (Truncated Compound Poisson) process for multiplicity 1 27 distribution hign i s h energy collisions.
83 53. M. Koca Division algebras with integral elements. 131 N. Ozdes
54. M. Cvetic A natural origin of inflation within a class of supersymmteric 133 T. Hübsch preon models. J.C. Pati H. Stremnitzer
. A.R55 . Prasanna Spinning charged particl electromagnetin a n ei c fiel curven 6 do 13 d K.S. Virbhadra space time.
. AhmeM . d56 Gravitational radiation reaction in the Nut-de Sitter space- 137 time.
. AldazabaG . 57 l Covariant superstring fermionic amplitudes. Vertex operators 138 M. Bonini and picture changing. C. Nunez
58. J.L Kneur Non-standard weak bosons at e-p collider. 144 S. Larbi S. Narison
. E.H59 . Saidi hyperKählee th n O 8 14 r potentiaselectioe th d an ln e th rul f eo hyperKähler geometry.
60. D. Birmingham BRST quantizatio f topologicano 9 14 l field theories. . RakowskM i G. Thompson
61. S.K. Chakrabarti Lower boun f energdo y dissipatio isotherman ni 0 15 l shock n i s black hole accretion and winds.
62. S.K. Chakrabarti Standing non-dissipative shock blacn si k hole accretiod nan 151 winds.
63. S.K. Chakrabarti Lower limi f stationaro t y shock strengt adiabatin i h 2 15 c flow.
64. S.K. Chakrabarti Isentropic compression waves in black hole accretion and 1 53 winds.
65. K. Gediz Akdeniz Instanton and eigenmodes in a two-dimensional theory of 156 A. Kizilersu gravity with torsion. . RizaoglE u
66. Xiaotong Song The relativisti wavS B- c e7 functio 15 spin-e th f 0o n spi2 n3/ You-Shan Dai bound state and its applications.
. B.V67 . Baby Derivatio f envelopo n Brogliee (d e ) soliton8 r nonlinea15 sfo r A.O. Barut Klein-Gordon equatio Hirota'nby s method.
68. Y. Sobouti Liouville's equation - III: Symmetries of the linearized 160 J. Samini equation.
69. A.O. Barut e quantuTh m potentia d "causalan l " trajectorie r stationarfo s 1 16 y M. Bozic states and for coherent states.
70. A.O. Barut Non-linea Broglie d r erelatioe waveth d nsan between 162 B.V. Baby relativisti d non-relativistian c c solitons.
84 71. B.V. Baby Non-linear de Brogue waves - I. On non-linear equations 1 63 A.O. Barut admitting soliton solutions with a "de Brogue phase" (revised e relatioversionTh . II n - )betwee n relativisti d nonan c - relativistic solitons and kinks.
72. LM. Nath Neutral pion photoproduction on the proton near threshold and 1 68 S.K. Singh the chiral symmetry.
73. Kei Ito Vanishing of the vacuum amplitude of heterotic string 169 compactified on a tensor product of N = 2 superconformai models.
74. S. Narison Light and heavy quark masses, test of PCAC and flavour 1 71 breakings of condensâtes.
75. T. Lhallabi BRST invariance with background field in N = 2 172 supersymmetric theory.
76. DaoVongDuc BRST cohomology operator strin3 n 7 so 1 g super-forms. Nguyen Thi Hong
77. G.G. Ghirardi Quantum dynamical semigroup theore 8 th 7 f quantud 1 yo san m A. Rimini measurements. T. Weber
. H.G78 . Dosch 9 17 Stabilit ybaryo e test th rules m f o snsu . M. Tamin . NarisoS n
. Randjbar-DaemS . 79 i 0 18 heterotin O c supermanifolds. Abdus Salam J. Strathdee
80. D.T. Stoyanov Classical solutions of the P-branes in the orthogonal gauge. 182
. BergshoefE . 81 f Super-p-branes in the light cone gauge-gauge theory of volume 186 E. Sezgin preserving diffeomorphisms. Y. Tanii P.K. Townsend
82. S.K. Chakrabarti Standing isothermal shocks in adiabatic black hole accretion 187 and winds.
83. S. Saleem Finite temperature correction somo t s 9 e18 electroweak M. Sami processes.
84. M. Gürses Soliton geometrvacuue th d man y gravitational field equations0 19 .
. GürseM . s85 Nonlinear partial differential equation homogeneoun so s spaces2 9 1 . O. O^uz S. Salihoglu
. G.C86 . Ghirardi CP-violatio d Einstein'nan s localit8 20 y reconsidered.
87. A.T. Baranik Observatio f baryonino c cluster centran i s l 4 Mg21 2Ag(Br+ 4 ) A. EI-Naghy collisionGeV/CA 5 4. t .a s S.S. Abdel-Aziz
85 . G.H88 . Abolghasem Generalization of the test theory of relativity to non-inertial 215 M.R.H. Khajehpour frames. R. Mansouri
. A.R89 . Prasanna Equilibrium configuration for an inertially dragged viscous 216 fluid around a slowly rotating compact object.
. M.R.H90 . Khajehpour Introductory lectures on critical phenomena. 218
91. S. Saleem Renormalizatio temperaturw lo t a D higd ean QE h f 9 density no 1 2 .
. Xiaoton92 g Song A phenomenological and approximately flavour-independent 223 potentia r quark-antiquarfo l k system.
. EI-NadM . i93 Determinatio f quaro n k mass ratios from hadron-hadro9 22 n O.E. Badawy collisions. I.M. El-Seidy
. K.C94 . Tripathy Integrable two-dimensional super system. 233 . TripathLK y
. K.C95 . Tripathy Contraction of Z2 graded Lie algebras. 234 M.K. Patra
96. K.C. Tripathy Integrabl5 23 e three-dimension system. S.C. Mishra
+ . JadacS . h97 New approach to SU2|_ x Ui radiative corrections in e e' 236 B.F.L Ward annihilation processe s° resonance Z nea e th r .
98. A.O. Barut Angular distribution in electron-neutrino scattering and the 237 Z.Z. Aydin anomalous magnetic momen neutrinoe th f o t .
99. T. Lhallabi Two-dimensional (4,0) supergravit n harmonii y c superspace8 23 . E.H. Saidi The action and the matter couplings.
1 00. T. Lhallabi BRST with background field method of the (4,0) 239 supersymmetric c-model in two dimensions.
. MeleM 101k. Factorizatio relativistie th f no c Pauli equatio presence th 1 n ni 24 e of a gravitational field.
102. E.H. Saidi Remarks on the hypermultiplets. 246
103. K.G. Akdeniz Stabilit statie th f co y soliton pura n ei s spinor theor0 25 y with A.O. Barut fractional power non-linearities. J. Kalayci S.E. Okan G. Tezgor
104. M.A. Abramowicz Standing shocks in adiabatic black hole accretion of rotating 252 S.K. Chakrabarti matter.
105. S.K. Chakrabarti A systematic study of the standing shocks in astrophysical 254 flows nea compaca r t object.
1 06. O.M. Moreschi Future null infinit f Robertson-Walkeyo 0 r26 spacetimes.
86 107. O.P. Dayi timd eOd formulatio Baalin-Vilkoviske th f no 9 26 y metho f do quantization.
108. M.A. Abramowicz Reversed sens f "outwardo e " directio r dynamicanfo l 5 effect27 s A.R. Prasanna of rotation close to a Schwarzschild black hole.
Yuliu 109Li n. Superconducting cosmic string evolution of quasars. 279
Yuliu 110Li n. Far infra-red peculiar behaviour of quasars. 280 Liu Jiying
111. V.G. Bornyakov Investigation of the vacuum structure of the Georgi-Glashow 283 E.-M. llgenfritz model on the lattice. . MitrjushkiK n A.M. Zadorozhny M. Müller- Preussker
. Jayarama112T . n Correlation functions for minimal models on the torus. 306 K.S. Narain
113. K.C. Tripathy Cohomology theory and deformations of Z2-graded Lie 314 M.K. Patra algebras.
114. M.K. Volkov Phenomenological connection procese th f so s 315 . yy - ° n d Tr> - yan ) n a- -*v3e,J , np » vey» - - ) t a- ,
115. M.D. Maia Classical membrane cosmology. 324 W.L Roque
11 6. M.D. Maia space-timn O e escape mechanisms. 325
117. Ke Jian Jin Stabilit f self-gravitatino y g systems consistin1 o kind33 tw sf o g Yuan Zhong Zhang of fermions.
Zongyann 118Su . g conformae Th i spinor equation f motioo s n with distinct SU(2,25 33 ) symmetries.
119. HuTong Extraction of higher twist contribution form large PT p 344 Fan-mei Kong photoproduction processes. Mao Luo
. Shiek120A . h Zêta function regularizatio f quantuno 6 m34 field theory.
121. S.K. Chakrabarti dynamice Th 4 35 f particleso bendine th n si g wavee th f so planetary rings.
122. G.M. Sotkov String6 n hyperellipti35 o s c supersurfaces. . CrnkoviC c
123. M.A. Braun Multinucleon interaction collisionn i s s wit7 h 35 nucle t higa i h energies.
. Denard124G . o Improved effective potentia0 Einsteie 36 th n i l n metric. E. Spallucci
87 . PindoM 125.r Numerical analysis of the high energy behaviour of the baryon- 362 P. Raczka baryon scattering amplitud spontaneousla n ei y broken gauge theorvectoe th f o yr meson exchange.
126. R. Floneanini Pure Wess-Zumino-Witten actions. 363 R. Percacci E. Sezgin
127. B.V. Ivanov Composition dependent force s superstrina s 7 36 g effects?
128. M.A. Braun Productio f lighno t fragment collisionA h n i s t higsa h energies5 37 . V.V. Vechernin
129. Y.V. Novozhilov Induced quantum conformai gravity. 382 D.V. Vassilievich
. BirminghaD 130. m Renormalization of topological field theory. 387 M. Rakowski G. Thompson
. BoninM 131.i Superconformai ghost correlator picturd an s 8 e 38 changing. R. lengo C. Nunez
132. B.V. Ivanov Higher-dimensional black holes with dilatons and compacted 390 asymptotics.
133. A.L. Katawv Scheme dependenc perturbative th f eo e serie physicaa 1 r 39 sfo l M.D. Vardiashili quantity in the gcp4 theory.
134. E. Bergshoeff Stress tesor commutator d Schwingean s r term singleton i s6 39 n E. Sezgin theories. Y. Tanii
135. Y.V. Novozhilov Proposal for composite model of electroweak bosons. 397
136. E. Bergshoeff Compactifications of the eleven-dimensional supermembrane. 398 M.J. Duff C.N. Pope E. Sezgin
137. Miaou supergravitie2 1, = N 2+n i s 1 dimension s Chern-Simonsa 6 40 s theories.
138. Qi-xing Shen A modified Skyrme model without Skyrme term. 407
139. S. Mignemi Spherically symmetric solutions in dimensionally reduced 416 L WiltshirD. e spacetimes.
140. K.G. Chetyrkin A simple renormalizatioe prooth f o f n8 grou1 4 p equatio e th n ni minimal subtraction scheme.
141. S. Dubnicka Modified VMD model with correct analytic properties for 422 L. Lucan describing electromagnetic structur nucleusHe f eo . 4 142. B.V. Ivanov Higher-dimensional black holes with realistic asymptotes in 430 the presence of dilatons and electromagnetic fields.
88 PREPRINT INTERNAD SAN L REPORTN SI CONDENSED MATTER PHYSICS
Authors Title ICTP Serial Number
. She1 n Jue-Lian Possible coexistence of antiferromagnetism and Su Zhao-Bin superconductivity in the Hubbard model. Dong Jin-Ming YuLu
2. R.A. Allub A simple model for the superconducting phase diagram near the 21 C. Wiecko metal-insulator transition. . CarA o
3. S.F.K. Kakai Effect f He-Nso e laser bea mechanicaln mo , heat,2 3 chemica d an l S.E. Albarwari superficial wounds. T.A. Alsenawi
4. Hu Fengming Normal vibration and molecular force constant studies of poly- 39 Cheng Jafu ß propiolactone. Wang Kelin
Fengminu H . 5 g Divergence treatmen calculatinn i t g molecula0 4 r constant d an s Cheng Jafu normal vibrations. Wang Kelin
6. A. Wagué Intermediate-couplin resonan2 = n g 3 e effect5 t th photo n o s - ionization of multiply-charged helium-like ions.
7. R. Allub Competition between direct interactio Kondd 4 nan 5 o effect: Renormalization group approach.
8. E. Tosatti Are spin-Peierls tendencies helping superconductivity? 58 YuLu
9. Jin Jian Min Stacking faul t crystalC growt1 6 Monte-Carle FC f Th ho : o Ming Nai Ben simulation approach.
. YiguangZha10 o The astigmatism factor for semiconductor injection lasers. 67 Changzhi
11. Ming Hai Semiconductor laser shearing interferometer. 68 Li Ming Chen Nong Xie Jiaping
12. KeWu Topologica antiferromagnetile terth f mo c Heisenber9 g8 mode n i l YuLu 2+1 dimension. Chuan-Jia Zhu
13. Y.E.-D. Gamal Secondary ionization proces lasen i s r induced2 breakdow9 f no molecular gases.
14. GoreckJ . i Molecular dynamics simulation of a chemical reaction. 93 J. Gryko
89 15. Liu Zhen-Yuan The history and future of the optical fibre communication in 105 China.
. A.M16 . Nassar Rol f aluminiueo m concentratio structure th n no e behaviou5 11 f o r A.S. Taha Cu-AI alloys. K.A. Ragab . EI-MassalamS y
17. A. Mookerjee The electronic structur f CuPeo d alloys augmenten A : d6 1 spac1 e P.K. Thakur cluste approachA CP r .
18. M. Ahmed solutiow e Falicov-KimbalAne th f o n l metal-insulator 117 transition model.
19. A.C. Chhajlany The Coulomb diamagnetic problem in two dimensions. 120 V.N. Mal'new N. Kumar
. ChaudhurR . 20 y Spin dynamics of EuS in the paramagnetic phase. 121 B.S. Shastry
. ZlatiV . c 21 Perturbative treatment of local correlations in Cu-0 planes for 122 P. Entel high temperature superconductors. B. Horvatic D. Schulz
22. Fu-sui Liu Oc formulanT f superconductivityo e . 126 Sheng Yi
23. C.W. Lung dislocatioe Th n distribution function nea craca r generatep ti k 0 13 d K.M. Deng by external sources.
24. M. Ahmed potentiao Atw l embedding approac electronie th o ht c structur2 13 e A. Mookerjee of disordered binary alloys.
25. Nguyen Van Hieu Derivatio f equationno r hig sfo c superconductivit hT y meansb y5 13 Vina n H hTa of slave boson technique. Nguyen Toan Thang
26. M. Ahmed Electronic structur f disordereo e d binary alloys2 14 : Effect f o s A. Mookerjee short-range order.
. BaquerR . 27 o Analysis of the structure of the surface local density of states 145 L. Quiroga at the Fermi level. A. Camacho
28. A.G. Rojo Oscillatory magnetoconductance of quantum double-well 154 N. Kumar channels. C.A. Balseiro
29. Wu Ji-An Theoretical study of the Pd-B complex in silicon. 159 Zhoe uJi Zhang Da-Ren
Coma. F . s30 LO-phonon confinemen polarod an t n effec quantum-wella n i t 4 6 1 . C. Trallero-Giner R. Riera
90 . Trallero-GineC . 31 r Multiple LO-phonon Raman scattering and hot excitons. 165 R. Riera
32. J.S. Nkoma Radiation induced luminescence from dipole6 s16 immerse a n di solid with a rough surface.
. ÂrvaZ . y 33 Self-similarity correlations in high-temperature 167 superconductivity.
. Nguye34 Hien nuVa Effective spinon-spinon and holon-holon interactions in RVB 1 74
model f high-To s c superconductivity.
35. P. Pawlicki Magnetoelastic effects in the Ising model on the Union Jack 176 lattice.
36. R. Asokamani Correlation between electro-negativity and superconductivity. 177 R. Manjula
. WrobeP . l37 Does spin density wave-like antiferromagneti1 c18 ordering coexist with extended S-wave pairing in the nearly half-filled quasi two-dimensional Hubbard model?
38. C.A. Balseiro Pairing in Cu-0 systems: Renormalization group and exact 1 83 E. Gagliano diagonalization results. M. Avignon B. Alascio
. J.S39 . Nkoma Linear response theor f surfaco y e polariton foun i s4 r 18 media systems.
40. R. Baquero Transfer matrice r multi-laye5 fo s 18 r structures.
. AragäodC . 41 e On the dimerization of linear polymers. 191 Carvalho
. T.M42 . Haridasan Dynamic f simplo s e defect cluster alkalinn i s e earth fluorides3 19 . P. Sekar
43. A.M. Kossevich Particle and wave properties of solitons (resonant and non- 1 94 resonant soliton scattering by impurities).
44. A.A. Golubov Theormodynamic characteristic f 5 Y-Ba-Cu-o s 19 0 type compounds in the model of strong electron-phonon coupling.
45. I.I. Mazin Local field effects in the many-body perturbation theory and in 196 the density functional theory.
46. O.V. Dolgov Energy gap in S- and D-wave pairing superconductors. 197 A.A. Golubov
. A.M47 . Oles Localized versus itinerant picture of high-Tc superconducting 1 98 . ZaaneJ n oxides.
. FazekaP . 48 s Generalized Gutzwiller Ansatz for the half-filled Hubbard 199 K. Penc chain.
91 . VargaP . s49 Diffusion coefficien f hydrogeo t niobiun ni tantalumd man . 200 MirandL a . LagoM s
. Chela-FloreJ . 50 s A new effect on the dependence of Tc on the number of Cu-O 201 P. Martin layer n non-rare-earti s h ceramic superconductors. J.J. Rodriguez- Nunez
. VargaP . s51 ß-phasee th n i H .electroe Ta Th d an n H structurNb , V f eo 202
52. V.L. Pokrovsky Resonance tunnelin breakdowd gan quantue th f no m Hall4 effec20 t PL . Pryadko in strong electric fields. A.L. Talapov
53. M.B. El-Den Electrophysical properties of InSb thin films prepared by splat 209 N.K. Mina cooling method. A.M. Samy M.K. Ei-Mously
54. M.B. El-Den Infrared absorption in pseudo-binary lnSbi_xBix compounds. 210 N.K. Mina A.M. Samy M.K. EI-Mously
55. J.L. Galan Deformation potential f somso e II-VI0 semiconductor22 0 = K t sa A. Camacho states. L. Quiroga
. P.N56 . Butcher On thermopower calculations with temperature dependent 221 I.P. Zvyogin electron energies.
57. M.T. Turaev On superfluorescent generation of coherent radiation in a 227 A.S. Shumovsky paramagnet.
. Wan58 g Litan Relaxation property of the fractional Brownian particle. 228 C.W. Lung
59. G. Baskaran fluB effecxe RV configuratio Th f o t superconductine th n no 0 23 g E. Tosatti state. YuLu
. A.A60 . Belov Lamb shif f Rydbero t g atom resonatora n i s . 231 Yu.E. Lozovik V.L. Pokrovsky
61. R.I.M.A. Rashid Vacancy formation energie close-packen i s 0 24 d crystals N.H. March correlated with melting temperature via thermodynamics and liquid structure.
. PorjesT . 62 z Comparison of Y-Ba-Cu-O compositions prepared from BaCuO2 243
I. Halasz and Ba2Cu3O5. A. Rockenbauer l. Kirschner . KovacGy s T. Karman G. Zsolt
92 63. Gy. Kovacs Preparation dependent superconductivit TICaBan yi 2Cu3O4 7 24 5±d. I. Halasz I. Kirschner T. Trag er T. Porjesz G. Zsolt T. Karman
. U.S64 . Nkoma Theor f Ramao y n scatterin surfacy gb e 7 polariton24 foua n i rs media system.
. D.I65 . Pushkarov Soliton excitations in deformable solids. 249 M.T. Primatarowa
66. I. Kirschner Hig c superconductivithT f TI-Ba-Ca-Cu-o y 1 25 O samples. I. Halasz Cs. Sukosd T. Porjesz J. Kurti Gy. Kovacs . KorecL z T. Karman N.S. Roslosnik . ZsolG t . TrageT r
. LevA y. Yegat67 i Evaluation of the Kubo formula for the conductivity using the 255 M. Weissmann recursion method. E. Anda
. FerrantA . 68 e Bond particle mode r semiconductofo l rs it melt d san 256 M. P. Tosi applicatio liquinto d structur germaniumeof .
69. J.A. Gonzalez Kinks in systems with degenerate critical points. 259 . EstradaJ - Sarlabous
70. M. Saber The diluted tri-dimensional spin-one Ising model with crystal 261 field interactions.
71. Fu-sui Liu fractionaOe nth l exponential waiting tim2 e26 distributio d an n Wen Chao effective activation energy.
. HolaA . s 72 A generalizatio Runge-Lene th f no z constan f classicao t l motio3 26 n N.H. March in a central potential.
73. C. Wiecko Interpretatio r 'high'-T nfo e totall th f yo c interconnecte4 26 d modele Le d . an a solutioM e th f no
74. ZhengQingQi The charge fluctuation induced by stretching motion in 265 Zeng Zhi i We n Pa Rushan Ha n
75. Shen Dingli Molecular orbital approach to the CO chemisorption on 267 Zhang Kaiming Cu(100).
76. A.A. Kornyshev Metal electron double th n i se layer theory. 268
93 . T.C77 . Ponce The role of the order parameter in a liquid crystalline phase 270 transition.
78. T.C. Ponce Molecular orientational re-orderin e transformatioth d 1 an g27 f o n Landaa u second order phase transitio firso nt t ordea n i r nematic liquid crystal.
79. J. Chela-Flores On the possibe effects of homeostatic shifts in human 273 C. Espejo Acuna embryonic development.
80. A. El Kenz Mean field theory of the spin-1 Ising model with a random 274 M. Saber crystal field.
81. A.G. Saif Vortex structur n high-Ti e c ceramic superconductors6 27 . J. Chela-Flores
82. J. Chela-Flores The Mercereau effect as a guide to the theory of high-Tc 277 P. Martin superconductivit rarin y e earth oxide ceramics. J. Rodriquez-Nunez
Gumu. H . s83 Electronic propertie f Ge^Sio s simplifie^A d tigh8 t bindin27 g C. Tuncay approach.
. ZhengQingQ84 i The electron structure of rare-earth luminescent centre in 281 Pai nWe alkaline-earth sulphides. Huan i ChugMa n He Xiao
. BenmounM . 85 a Dynamic scattering from multicomponent polymer systems. 285
. A.G86 . Saif Nucleation of ceramic superconductivity. 286 . Chela-FloreJ s
87. C. Tuncay Electronic propertie f Gei_o s xSix: Alloying versus pressure7 28 .
. R.I.M.A88 . Rashid The nature of condensation in the momentum space for an 288 interacting Bose system.
. W.D89 . Kraeft Thermodynamics of two component gaseous and solid state 289 W. Stolzmann plasma degeneracyy an t sa . . I Fromhold-Trek T. Rother
90. R. Baquero Surface and interface local density of states for Nb, V and Ta. 290 A. Camacho L Quiroga
91. A. Brezini Theoretica l e interplastudth f o y f electron-electroo y 1 29 n S. Behilil interactio d disorderan n .
. A.A92 . Youssef Force constants from therma2 l29 diffusio He-Ce - th Nc n i n2d H4an
U. Seddik CaH4 gas mixtures.
93. A.G. Rojo The surface impurity problem in the Hubbard model: A 296 R. Allub renormalization-group study. M.C.G. Passeggi
94 94. A. Camacho Band structure of CdTe-ZnTe superlattice. 297 . RodrigueF z L Quiroga
. J.Q95 . Shen Influenc f shalloeo w trapped stat positron eo n specific trappin8 29 g C.W. Lung rate in small size vacancy clusters.
96. R. Allub Coexistence of spin-glass and type-ll ceramic 300 . Chela-FloreJ s superconductivity.
. TuncaC . y97 Pressure coefficient semi-empiricaA : Ge f o s l1 approach30 .
98. M. Benmouna Applicatio Ornstein-Zernike th f no e formalis2 30 polymemo t d an r copolymer blends.
Benmoun. M . 99 a Spinodal decompositio polymen ni r blends. 303
. 100GottlieD . b Magnetically driven lattice instabilities. 304 . LagoM s
101. X.Y. Wang Nonlinear dynamical phenomena in liquid crystals. 305 S.M. Sun
102. R.E. Amritkar Multifractals: A review. 307 N. Gupte
103. H.M. Miesenböck Dispersion of a layered-electron gas with nearest neighbour 308 tunneling.
104. M.M. Abdul-Gader Electrical transport propertief o s 309 S. Aboudy S.N. Ershov T. Parker
105. R.K. Singh Cohesive and anharmonic elastic properties of mixed fluorite 310 C.N. Rao crystals.
106. R. Baquero s anisotropI source th y f magnetiseo V(100e th mn i ) surface2 31 ? A. Noguera V. Velasco F. Garcia-Moliner
I 07. T.F. Refai Hysteresis developmen superconductinn i t 3 g 31 Josephson L.N. Shehata junctions.
108. MahechJ . . aG e rotatinTh electroo gtw n externan atoa mn i l electri6 c 31 field.
. Sunji109M . c Finite size effects in Wigner crystallization of electrons on 317 Z. Lenac liquid helium layers.
II 0. P.P. Ray Bound states of the potential V(r) = 318 K. Mahata -Ze2/(r+ß).
111. B.Ai Ol . Microscopic theorphonoe th f o y n frequencie 2 bariumc 32 bc n si .
112. Chela-FloreJ . s The propagatio nerve th f eno impuls3 32 e unde effec e a th r f o t E.M. El-Sayed magnetic field. X.Y. Wang
95 113. E.I. Aliskenderov Jaynes-Cummings model interacting with squeezed light. 327 K.A. Rustamov Ho Trung Dung A.S. Shumovksy
114. G. Garcia-Calderon Properties of the dwell time and the transmission and 328 A. Rubio reflection time r resonanfo s t tunneling.
. 115EI-HasaM . n The electronic structure of Ga Asi_x Px and Ga Sb-|_x Px 330 M. Tomak calculated using the recursion method.
116. R.K. Singh Hydrostatic pressure dependenc f elastieo c constant3 r lea33 fo s d C.N. Rao fluoride crystal.
117L CarrillJ. . o A model for hot electron phenomena: Theory and general 336 M.A. Rodriguez results.
118. M.H. Hanna The ultrasonic speed as a guide of the concentration of alkali- 337 M.K. Luqman halides ions in water. M.S. Hussain
119. XinSun Gap states of charged soliton in polyacetylene. 338 Dingwei Lu Jie Liu Roulu F i
120. V.B. Geshkenbein Time dependenc f magnetizatioeo f higno h9 temperatur33 e A. Larkin superconductors.
121. LB. loffe Mott transition: Low energy excitations and 340 A.I. Larkin superconductivity.
122. Z. Akdeniz Stability analysis for complexes in calcium-alkali bromide 342 S. Dalgic solutions. A. Erbolukbas M.P. Tosi
123. Z. Akdeniz Stability diagrams for complexes in molten mixtures of halide 343 M.P. Tosi salts.
124 . BuzeV . k Periodical revivals of squeezing in an anharmonic-oscillator 347 model with coherent light.
125. DandachH . e First approximatio Hugonioe th o nt 9 34 t equatio e f statnth o f eo lanthanides.
126. HuTong solitoe Th n behaviou f craco r k propagatio brittln ni e materials0 35 .
127. Li Xizeng Generation of higher-order squeezing of quantum 353 Shan Ying electromagnetic fields by degenerate four-wave mixing and . MandeL l other processes.
128. K.A. Rustamov Algebraic analysis of the electromagnetic wave interaction 358 wite two-levehth l system with two-fold degenerated states.
129. R. Ferrer Long-range interaction compressible th n i s e Heisenberg 1 chain36 .
96 130. V.T. Khosiainov Differential geometric aspects of the theory of 365 ferroelectricity.
131. Gen-Di Pang Off-diagonal long-range order and super-conducting particle 366 Fu-Chu oP density. Bao-Heng Zhao
132. RoverM . e Ordering transitions induced by Coulomb interactions. 368 G. Senalore M . Tos.P i
133. XinSu Electron correlatio Peierld nan s instabilit f one-dimensionao y 9 36 l Jun Li systems. Zhigang Shuai Changqin Wu
134. Yuan Duping Theor f internao y l frictio orden ni disorded 1 an r 37 r state f o s Tsai Chien-hua YBa2Cu3O7_5 system.
135. Cui Shi-Min Spin fluctuatio dimensionao tw f no l itinerant fermion systems2 37 . Tsai Chien-Hua
136. C. Tuncay Pressure effects on Ge and Si: A simplified tight binding 376 approach.
137. P. Akhter Dissolutio f B-dopeno d Si(100) layer NaOn si 0 38 H aqueous A. Baig solutions. . MuftA i
138. BaquerR . o Is anisotrop source th y f magnetiseo V(100e th mn i ) surface1 38 ? A. Noguera V. Velasco . Garcia-MolineF r
139. R. Kaschner The local quantum-mechanical stress tenso Thomas-Fermn i r 4 39 i J. Grafenstein approximation and gradient expansion methods. . ZieschP e
140. N. Nafari Image-force effect n bimetallii s c systems. 395 A. AI-Kelsh M.Ps Da .
141. M. Ahmad Nucleation of vortices in superfluid helium-4. 400
142. M. Ahmad Goldstone excitatio symmetry-breakind nan g 1 mechanis40 mn i M.H. Hanna superfluid-He4. S.K. Tikoo T.K. Raina
143. M. Ahmad Coherent state in the roton region of superfluid helium-4. 402 M.H. Hanna S.K. Tikoo T.K. Raina
144. V.G. Mozhaev A new type of surface acoustic waves in solids due to non- 412 linear elasticity.
97 . AhmaM 145. d Symmetry-breaking phenomena in liquid helium-4 (review 413 S.K. Tikoo paper). T.K. Raina
146. S.A. El Wakil Energy dependent transport problem with generalized boundary 415 M.S. Abdel Krim conditions. M.T. Attia A.A. El Ghazaly
147. Penguin Sheng Resonance fluorescence of atoms in a strong magnetic field. 425
148. Zhao-bin Su Composite vs. constituent particle aspects of hole motion in 427
YuLu the CuO2 plane.
98 PREPRINT INTERNAD SAN L REPORTN I S MATHEMATICS
Authors Title ICTP Serial Number
Ada. Gh m . 1 Automatic quadrature with conditionally activated extended 8 A. Nobile Clenshaw-Curtis rules.
2. A.R. Bestman On hydromagnetic channel flow induced by tooth pulses. 1 0 F.I. Njoku
3. J.-P. Ezin Opérateurs différentiels naturelfibres le r s su svectoriels 8 1 .
4. J.-P. Ezin Riemannian metrics with prescribed scalar curvatur9 e 1 withi na conformai class overviewn A : .
. 5 C.E. Chidume Iterative approximatio solutioe th monotona f no f no e operato2 2 r equation in certain Banach spaces.
. 6 C.E. Chidume Iterative solution of a non-linear operator equation. 23
7. C.E. Chidume Approximatio f fixeo n d point f Lipschito s z pseudo-contractiv4 2 e mapping Banacn si h spaces.
. ZafaranJ . 8 i Strict topologies and (DF)-spaces. 28
. 9 Zhang Xianwei Mathematical model for hypothalamus-hypophysis-adrenal 29 cortex system.
. Zho10 u Zixiang General form of Darboux transformations for Lax pairs. 30
11. B. D. Rouhani Asymptotic behaviour of quasi-autonomous dissipative 31 systems in Hubert spaces.
12. Chen Yunmei The weak solutions to the evolution problem of harmonic maps. 34
5 3 13. J.F. Glazebrook Residual circuits. . VerjovskA y
14. J.F. Carinena Canonical group actions. 37
15. A.B. Thaheem O functionana l equatio8 3 n over Hubert spaces. N. Mohammad
16. A.R. Bestman Free convection heamasd an t s transfe1 4 steado t r y floa wn i semi-infinite vertical porous medium.
. A.R17 . Bestman On the thermal stability of a radiating gas under general 42 differential approximation.
18. A.R. Bestman Radiative effec changn i t f phaseo e under general differentia3 4 l approximation.
19. J.J. Kondera6 4 k On equivariant Lagrangians.
99 . SueS d. 20 Finite elements for partial differential equations: An 63 introductory survey.
. RigolM . i 21 Th6 6 er Kähleria fo Gaus p sma n sub-manifold . n R f so R. Tribuzy
22. M. Toomanian Bundle representations of tangent group of a Lie group. 71
23. A.R. Bestman Unstead yincompressibln a flo f wo e fluihorizontaa n di l porou4 7 s medium with suction.
. ChenYunme24 i L~(Rn) solutiondecae th f clasa o y 5 n 7 f Schrödingeso so r equations.
25. Duong Minh Duc A clas f stronglo s y degenerate6 7 elliptic operators.
. D.A26 . Dawson Generalized solutions of stochastic evolution equations. 84 LG. Gorostiza
. C.H27 . Lutterodt A meromorphic approximatio complea n n7 i 8 x manifold.
. C.H28 . Lutterodt A meromorphic extensio f Oka-Weino l approximatio 5 Steia 9 n ni n manifold.
. V.K29 . Dobrev Lectures on Lie algebras and their representations - I. 96
30. V.K. Dobrev New Weyl groups for Ai'1). 97
. Duon31 g Minc hDu An imbedding theorem and its applications in degenerate 110 elliptic equations.
. G.K32 . Zafindratafa Remarques sur les sous-variétés à connexion normale plate, 11 2 satisfaisan K.£-conditioa l t C.K-conditiona l u no .
. A.B33 . Thaheem A not one-parameten eo r group f automorphismso s . 113 N. Mohammad
Mohamma. N . 34 d Some characterization f Beso s t approximations. 114 A.B. Thaheem
. J.-P35 . Ezin Spherical-type hypersurfaces in a Riemannian manifold. 118 M. Rigoli
36. J.P. Ezin Uniform bounds of the spectrum of Dirac operators. 124 M. Rigoli
37. V.K. Dobrev A Wey l1 super-Virasor Virasore grouth N= r d pfo oan o 129 algebras.
. J.-H38 . Eschenburg Reductio f codimensiono f surfacesno . 134 R. Tribuzy
NandS. a 39. Generalized monotone operators in Banach spaces. 139
. M.A40 . Hossain MHD forced and free convection boundary layer flow near the 140 leading edge.
100 . M.A41 . Hossain Forced and free convection flow with viscous dissipation 141 . ArbaO d effects by the method of parametric differentiation.
42. A.H. Hassadi A geometric characterizatio3 14 clasa f f no modulaso r representations.
. B.D43 . Rouhani Asymptotic behaviour of almost non-expansive sequences in a 188 Hubert space.
44. Duong Minh Due Second order degenerat3 20 e elliptic equations.
. G.B45 . Khosrovshahi A new basis for trades. 206 S. Ajoodani-Namini
46. T.D. Palev Irreducible finite-dimensiona7 20 l representation e Li e th f o s superalgebra gî(n/1) in a Gel'fand-Zetlin.
47. A.K.M. Masood-UI- Nonexistence theorem r Yang-Millsfo s fields outsid 1 blace 21 eth k Alam Schwarzschile holth f eo d spacetime. Pan Yanglian
Yanglian Pa . n48 Pinching condition2 21 r Yang-Millfo s s instabilit f o y hypersurfaces.
49. Pan Yanglian Nonexistenc f stablo e e map r sufficientlfo s y pinched3 simpl21 y connected Riemannian manifolds. g Na . S . 50 The complex structures on the co-adjoint orbit spaces of 217 . VerjovskA y Diff(S1) and Bers' universal Teichmüller space are compatible.
51. N. Mohammad A Hubert space structur2 22 Banacn eo h algebras.
52. ChenYunmei Existenc d partiaan e l regularity6 heae result22 th tr flo fo sr wfo . StruwM e harmonic maps.
53. Quo Boling existencee Th f globao l solutio "blod " phenomenonan w up 2 23 r nfo e systeth f multi-dimensionamo l symmetric regularized wave equations.
. MajumdaS . 54 r 2 derivativ24 x Fo solutioe e worth e th th n ef i f do no e us n O problem for groups.
55. S. Majumdar A generalized Freiheitsatz. 245
56. S. Nag Canonical measures on the moduli spaces of compact Riemann 248 surfaces.
. J.-P57 . Ezin Topics in Riemannian geometry. 257
Bolino Qu g . 58 solitoN n solutio syste e clasa non-lineaS th 8 r L f nf sfo o m25 o r Pan Xiude wave interaction.
59. Quo Boling Similarity transformations, the structure of the travelling 266 waves solution of the existence of a global smooth solution to generalized Kuramoto-Sivashinsky type equations.
101 60. AhsaJ . n Maximal quotient BCK-algebras. 272 E.Y. Deeba A.B. Thaheem
. Duon61 g Mine hDu Prescribed scalar curvature functions for conformai metrics 282 J.-P. Ezin on a bounded domain of R2.
62. S. Nag Diff(S1)/SL(2,R) and Teichmüller space. 284 A. Verjovsky
. EI-QallalA . 63 i Left regular bands of groups of left quotients. 293
. S.A64 . Mutangadura Implementation of comparative probability by Gleason 299 measures: Infinite dimensional case.
65. Duong Minh Due Nonlinear singular elliptic equations. 311
66. KonderaJ . k Construction of harmonic maps between pseudo-Riemannian 31 9 sphere hyperbolid san c spaces.
67. A.H. Assadi An algebraic variation on a theorem of Atiyah-Bott. 320
. JassanA . i68 Structure of the fixed point set of an involutory automorphism 329 of PSL(z,q), q odd, q>5.
69. F. Brambila-Paz Lax-Phillips scattering theory wito Hubertw h t space4 s33 V(x = ) o-[——o—]. 1 > ß , |x|l
. J.-P70 . Ezin Remarks on an indentity by R. Schoen and others. 341
71. Rong-YuZhou The transition of the anharmonic oscillator system from 345 Jian-Lini L g regular to irregular classical motion and the behaviour of its corresponding quantum system.
. Y.D72 . Bozhkov stabilitn O f Kummeo y r surfaces8 34 ' tangent bundle.
. B.I73 . Zavialov Some asymptotic propertie f functiono s 1 s 35 holomorphi n i c tubular domains.
74. V.V. Zarinov Infinitesimal symmetries and conservation laws of the 352 classical string.
75BrambilL . z aPa Moduli of endomorphisms of semistable vector bundles over a 373 compact Riemann surface.
. P.C76 . Ozoemena Some basic theorem crose th sn so sum certaia f 4 so 37 n clas f so numbers (M-1) whe operatione nth done ar s e with different bases M of the arithmetic.
. Xion77 g Jincheng Erratic time dependence of orbits of topologically mixing maps. 377
78. Jing Zhu-Jun Loca globad an l l bifurcatio applications it d nan predatora n 8 i s 37 - prey system with several parameters.
79. J.Q. Liu A generalize9 37 d saddle point theorem.
102 . P.C80 . Ozoemena On the areas of various bodies in the Euclidean space: The case 383 of irregular convex polygons.
. Xion81 g Jincheng Chaoticit f intervao y l self-maps with positiv5 e38 entropy.
. NikolovL . 82 a A note on the geometrical meaning of the gauge coupling 386 constant.
. Y.D83 . Boshkov An estimate on the purely imaginary poles of scattering 389 matrix.
. ZafindratafG . 84 a e locaTh l structur 2-codimensionaa f o e l conformall2 39 y flat submanifol Euclideaa n di n space Rn+2.
. TrautmaK . 85 n Orbits which always have affine invariant neighbourhoods3 39 .
86. P.C. Ozoemena The relationship beween the current and the width of the Pogo 399 C.A. Onwumechili electroject during the solstices.
Senliu X n. 87 Finding isolated zero points of complex polynomial mappings. 403
88. Zhou Jian 4 40 7 withouS constructioy an t groupe Li f no . Xu Seniin
. PereirA . Vallo a89 d e Two example 8 f escapinso 40 g harmonic maps. . VerjovskA y
90. HuangXuanGuo Sm(1 Sx )n -m(1 embeddes i ) d into Sn+1(1) with prescribe9 40 d mean curvature.
91. HuangXuanGuo Compact surfac dimensiona3 n ei l ellipsoid with prescribe0 41 d mean curvature (I).
i Xiao-GuL . 92 i Qualitative analysi non-lineaa f so r inciden1 41 t rate upo e nth behaviour of epidemiological model.
93. J. Davidov RiemanniaOe nth n4 curvatur41 twistoa f eo r space. O. Muskarov
94. l.M. Mladenov Reductions and quantization. 417
95. V.K. Dobrev Extended Weyl group for Kac-Moody algebras. 41 9
. F.M96 . Diab sufficienn O t condition0 42 functiona r analyticse fo b o st .
97. A.R. Bestman The thermal stability between rotating cylinders in a radially 421 symmetrical gravitational field.
. T.V98 . Tonev General hulls in uniform algebras. 428
. T.V99 . Tonev Analytic manifold n unifori s m algebras. 429
103 PREPRINT INTERNAD SAN L REPORTN I S PHYSIC ENERGD SAN Y
Authors Title ICTP Serial Number
. BranduI . 1 s Phase transitions in gauge space: A study within a superfield 1 7 I. Bulboaca mode f atomio l c nucleus including pairin alphd gan a type M. Horoi correlations. . CarstoiF u Q. Dumitrescu
2. M. Abd-Alla Thermostatic propertie f semi-infinito s e polarized7 4 nuclear M.Y. M. Hassan matter. S. Ramadan
3. Mahmood Mian Folding model analysis of A binding energies and three-body 48 I. Ahmad ANN force. M.Z. Rahman Khan
. 4 A.A. Usmani oc4He elastic scattering at high energies. 49 I. Ahmad Q.N. Usmani
. AfzaM . l 5 Ansari Pre-equilibrium decay proces a-inducee th n si d0 5 reaction n o s R.K.Y. Singh silver isotopes. R.P. Gautam I.A. Rizvi A.K. Chaubey
. AfzaM . l 6 Ansari Multiparticle emissio pre-equilibriue th i n 7 m5 deca f lighd o y an t I.A. Rizvi heavy nucle a-inducen i i d reactionMeV0 6 o t .p su M.K. Bhardwaj A.K. Chaubey
7. A. Misra Nuclear softness in the interacting boson model. 69
8. M. Salimullah Possible parametric instabilities of beat waves in a 83 transversely magnetized plasma.
9. E.G. Njau A mathematical correlation between variations in solar 98 radiatio parameters - II: Global radiation, air temperature and specific humidity.
10. R.K. Gupta Theory of spontaneous cluster decay of radioactive nuclei. 1 04
. E.T11 . AI-Alawy Wind energy analysis, utilizations, and economic viability for 106 different applications in Iraq.
12. S.S. Malik Mass-drift mod 238n ei U-induced quasi-fissio5 n12 reaction n o s Sarlejit Singh target 48f so Ca , 48Ti, 5864d FNean i using dynamical R.K. Gupta fragmentation theory.
13. A.M. Awin Positive energy bound states at higher partial waves. 128 A.M. Kremid
104 . E.G14 . Njau The physical and theoretical basis of solar-terrestrial 146 relationships - I: Equatorial locations.
15. E.G. Njau The physical and theoretical basis of solar-terrestrial 147 relationships - II: Non-equatorial locations.
. A.T16 . Baranik Spin of two-nucleon system and nucleon-antinucleon 175 . EI-NaghA y combinatio S-statee th n i n . . RamadaS n
17. A. EI-Naghy Graphical analysis of clusters in the Lobachevsky velocity 253 S. Ramadan space. S.S. Abdel-Aziz
18. S.P. Merkuriev rulem three-bodn Su i s y proble t fixema d angular momentum6 32 . A.A. Kvitsinsky
. G.G19 . Koutroulos Relativistic ground state energy of the A particle in 364 hypernuclei using Woods-Saxon potentials.
20. GrattoJ . n Non-Newtonian gravity creeping flow. 370 S.M. Mahajan F. Minotti
. FangYud21 e plasmR producine EC Th an a usinf go g 245whistlez 0MH r wav4 38 e Zhang Jiande and the investigation of its parameters. Fu Kerning Lu Xiangyu Liu Dengcheng Wang Xianyu Xie Weidong Bao Dinghua Yin Xiejin
. I.A22 . Kotelnikov Non-linear effect electron i s n cyclotron plasma heating. 426 G.V. Stupakov
105 PREPRINTS AND INTERNAL REPORTS IN PHYSICS OF THE LIVING STATE
Authors Title ICTP Serial Number
1. J.C. Benegas An extension of the counterion condensation theory to 20 A. Cesaro conformational change f flexiblo s e polymers.
2. S.F.K. Kakai Enhancing the healing process of chemical burns with He-Ne 33 S.E. Albarwari radiation. T.A. Alsenawi
u . 3 ShzH r eJe Analysi wine th df o s dat estimatiod 4 aan 29 resultane th f no r ai t Hiroshi Katagiri concentrations and 7 exposure rates. Hideo Kobayashi
u . 4 ShzH r eJe Exposure of the postulated accident estimated using he 295 Hiroshi Katagiri propeller and supersonic wind data. Hideo Kobayashi
5. M.K. Rahman A systematic review on aromatic L-amino acid decarboxylase 321 T. Nagatsu (5-hydroxytryptophan decarboxylase).
PREPRINTS AND INTERNAL REPORTS IN PHYSIC D ENVIRONMENAN S T
Authors Title ICTP Serial Number
1. M. EI-Hadj Tidjani Establishment of some secondary gravity bases in Benin. 16 B.A. Agbani
2. A. Medina Yellow substance (Gelbstoff). 81
. 3 E.G. Njau A generalized theory of sun climate/weather link and climatic 155 change.
4. J. Rutilant Synoptic aspect e centrath f o s l Chile rainfall variability 170 H. Fuenzalida associated with the southern oscillation.
5. E.G. Njau On the physical causes of Enso events and the ITCZ's extreme 205 latitudinal displacements.
. BayJ . o6 Omotosho Energetics stud f Weso y t African dust haze. 332
7. P.C. Jain Study of hourly global and diffuse radiation over Southern 355 African locations.
106 8. J.B. Ratsimbazafy Structural study in "ITASY" volcanic region (centre of 359 Madagascar geophysicay b ) l method agnetim s( d can audiomagnetotelluric).
9. R.C. Agrawal Geologic considerations for urban planning in seismic 423 environment.
10. R.C. Agrawal Seismic zoning studie Indian si . 424
PREPRINTS AND INTERNAL REPORTS IN OTHER FIELDS
Authors Title ICTP Serial Number
. 1 E.G. Njau Distortion outpue th n i st signal f conventionao s l spectrum 224 analysers.
. 2 E.G. Njau Distortions caused by the signal processing in analogue AM 225 modulators.
107