PDF of Program of the Sessions
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Direct Derivation of Liénard–Wiechert Potentials, Maxwell's
Direct derivation of Li´enard{Wiechert potentials, Maxwell's equations and Lorentz force from Coulomb's law Hrvoje Dodig∗ University of Split, Rudera Boˇskovi´ca37, 21000 Split, Croatia Abstract In 19th century Maxwell derived famous Maxwell equations from the knowledge of three experimental physical laws: the electrostatic Coulomb's law, Ampere's force law and Faraday's law of induction. However, theoretical basis for Ampere's force law and Fara- day's law remains unknown to this day. Furthermore, the Lorentz force is considered as summary of experimental phenomena, the theoretical foundation that explains genera- tion of this force is still unknown. To answer these fundamental theoretical questions, in this paper we derive relativisti- cally correct Li´enard{ Wiechert potentials, Maxwell's equations and Lorentz force from two simple postulates: (a) when all charges are at rest the Coulomb's force acts between the charges, and (b) that disturbances caused by charge in motion propagate away from the source with finite velocity. The special relativity was not used in our derivations nor the Lorentz transformation. In effect, it was shown in this paper that all the electrody- namic laws, including the Lorentz force, can be derived from Coulomb's law and time retardation. This was accomplished by analysis of hypothetical experiment where test charge is at rest and where previously moving source charge stops at some time in the past. Then the generalized Helmholtz decomposition theorem, also derived in this paper, was applied to reformulate Coulomb's force acting at present time as the function of positions of source charge at previous time when the source charge was moving. -
The Helmholtz Decomposition of Decreasing and Weakly Increasing Vector Fields
The Helmholtz’ decomposition of decreasing and weakly increasing vector fields D. Petrascheck and R. Folk Institute for Theoretical Physics University Linz Altenbergerstr. 69, Linz, Austria Abstract Helmholtz’ decomposition theorem for vector fields is presented usually with too strong restric- tions on the fields. Based on the work of Blumenthal of 1905 it is shown that the decomposition of vector fields is not only possible for asymptotically weakly decreasing vector fields, but even for vector fields, which asymptotically increase sublinearly. Use is made of a regularization of the Green’s function and the mathematics of the proof is formulated as simply as possible. We also show a few examples for the decomposition of vector fields including the electric dipole radiation. Keywords: Helmholtz theorem, vector field, electromagnetic radiation arXiv:1506.00235v2 [physics.class-ph] 14 Oct 2015 1 I. INTRODUCTION According to the Helmholtz’ theorem one can decompose a given vector field ~v(~x) into a sum of two vector fields ~vl(~x) and ~vt(~x) where ~vl is irrotational (curl-free) and ~vt solenoidal (divergence-free), if the vector field fulfills certain conditions on continuity and asymptotic decrease (r ). Here ~x is the position vector in three-dimensional space and r = ~x its →∞ | | absolute value. The two parts of the vector field can be expressed as gradient of a scalar potential and curl of a vector potential, respectively. Concerning the validity, the uniqueness of the decomposition and the existence of the respective potentials one finds different conditions. The fundamental theorem for vector fields is historically based on Helmholtz’ work on vortices1,2 and therefore also known as Helmholtz’ decomposition theorem. -
A 1 Case-PR/ }*Rciofft.;Is Report
.A 1 case-PR/ }*rciofft.;is Report (a) This eruption site on Mauna Loa Volcano was the main source of the voluminous lavas that flowed two- thirds of the distance to the town of Hilo (20 km). In the interior of the lava fountains, the white-orange color indicates maximum temperatures of about 1120°C; deeper orange in both the fountains and flows reflects decreasing temperatures (<1100°C) at edges and the surface. (b) High winds swept the exposed ridges, and the filter cannister was changed in the shelter of a p^hoehoc (lava) ridge to protect the sample from gas contamination. (c) Because of the high temperatures and acid gases, special clothing and equipment was necessary to protect the eyes. nose, lungs, and skin. Safety features included military flight suits of nonflammable fabric, fuil-face respirators that are equipped with dual acidic gas filters (purple attachments), hard hats, heavy, thick-soled boots, and protective gloves. We used portable radios to keep in touch with the Hawaii Volcano Observatory, where the area's seismic activity was monitored continuously. (d) Spatter activity in the Pu'u O Vent during the January 1984 eruption of Kilauea Volcano. Magma visible in the circular conduit oscillated in a piston-like fashion; spatter was ejected to heights of 1 to 10 m. During this activity, we sampled gases continuously for 5 hours at the west edge. Cover photo: This aerial view of Kilauea Volcano was taken in April 1984 during overflights to collect gas samples from the plume. The bluish portion of the gas plume contained a far higher density of fine-grained scoria (ash). -
Representations of Finite Groups
Mathematisches Forschungsinstitut Oberwolfach Report No. 15/2006 Representations of Finite Groups Organised by Alexander S. Kleshchev (Eugene) Markus Linckelmann (Aberdeen) Gunter Malle (Kaiserslautern) Jeremy Rickard (Bristol) March 26th – April 1st, 2006 Abstract. The workshop ”Representations of finite groups” was organized by A. Kleshchev (Eugene), M. Linckelmann (Aberdeen), G. Malle (Kaiser- slautern) and J. Rickard (Bristol). It covered a wide variety of aspects of the representation theory of finite groups and related objects like Hecke algebras. Mathematics Subject Classification (2000): 20-06 20Cxx. Introduction by the Organisers The meeting was organized by A. Kleshchev (Eugene), M. Linckelmann (Ab- erdeen), G. Malle (Kaiserslautern) and J. Rickard (Bristol). This meeting was attended by over 50 participants with broad geographic representation. It covered a wide variety of aspects of the representation theory of finite groups and related objects like Hecke algebras. This workshop was sponsored by a project of the Eu- ropean Union which allowed us to invite in addition to established researchers also a couple of young people working on a PhD in representation theory. In eleven longer lectures of 40 minutes each and twentytwo shorter contributions of 30 min- utes each, recent progress in representation theory was presented and interesting new research directions were proposed. Besides the lectures, there was plenty of time for informal discussion between the participants, either continuing ongoing research cooperation or starting new projects. The topics of the talks came roughly from two major areas: on the one hand side, the investigation of representation theoretic properties of general finite groups and related objects, on the other hand the determination and detailed analysis of representations of special classes of finite groups and related objects like Hecke algebras. -
The Language of Differential Forms
Appendix A The Language of Differential Forms This appendix—with the only exception of Sect.A.4.2—does not contain any new physical notions with respect to the previous chapters, but has the purpose of deriving and rewriting some of the previous results using a different language: the language of the so-called differential (or exterior) forms. Thanks to this language we can rewrite all equations in a more compact form, where all tensor indices referred to the diffeomorphisms of the curved space–time are “hidden” inside the variables, with great formal simplifications and benefits (especially in the context of the variational computations). The matter of this appendix is not intended to provide a complete nor a rigorous introduction to this formalism: it should be regarded only as a first, intuitive and oper- ational approach to the calculus of differential forms (also called exterior calculus, or “Cartan calculus”). The main purpose is to quickly put the reader in the position of understanding, and also independently performing, various computations typical of a geometric model of gravity. The readers interested in a more rigorous discussion of differential forms are referred, for instance, to the book [22] of the bibliography. Let us finally notice that in this appendix we will follow the conventions introduced in Chap. 12, Sect. 12.1: latin letters a, b, c,...will denote Lorentz indices in the flat tangent space, Greek letters μ, ν, α,... tensor indices in the curved manifold. For the matter fields we will always use natural units = c = 1. Also, unless otherwise stated, in the first three Sects. -
VITA Erica Flapan Department of Mathematics
VITA Erica Flapan Department of Mathematics (909) 621-8711 Pomona College 610 N. College Ave. Claremont, CA 91711, U.S.A. efl[email protected] http://pages.pomona.edu/ elf04747/ Education BA Hamilton College 1977 MA University of Wisconsin, Madison 1979 Ph.D University of Wisconsin, Madison 1983 Research Interests: 3-Manifolds, knot theory, topology of embedded graphs, applications of topology to chemistry and molecular biology Academic Positions 1983-1985, G.C. Evans Instructor, Rice University 1985-1986, Visiting Assistant Professor, University of California at Santa Barbara 1986-1990, Assistant Professor, Pomona College 1990-1998, Associate Professor, Pomona College 1998-present, Professor, Pomona College 2006-present, Lingurn H. Burkhead Professor, Pomona College Visiting Positions Fall 1987, Visiting Scholar, Universit´ede Paris-Sud, France Spring 1990, Visiting Scholar, Institute for Theoretical Dynamics, University of California at Davis Spring 1996, Research Associate, Institut Henri Poincar´e, France Fall 2000, Research Associate, Institut des Hautes Etudes´ Scientifiques, France Fall 2013, Long Term Visitor, Institute for Mathematics and its Applica- tions, University of Minnesota Spring 2015, Research Member in the Complementary Program, Mathemat- ical Sciences Research Institute National Awards and Honors 2011, Haimo Award for Distinguished College or University Teaching of Mathematics, Mathematical Association of America 2012, Inaugural Fellow of the American Mathematical Society 2015-2017, P´olya Lecturer of the Mathematical -
Inis: Terminology Charts
IAEA-INIS-13A(Rev.0) XA0400071 INIS: TERMINOLOGY CHARTS agree INTERNATIONAL ATOMIC ENERGY AGENCY, VIENNA, AUGUST 1970 INISs TERMINOLOGY CHARTS TABLE OF CONTENTS FOREWORD ... ......... *.* 1 PREFACE 2 INTRODUCTION ... .... *a ... oo 3 LIST OF SUBJECT FIELDS REPRESENTED BY THE CHARTS ........ 5 GENERAL DESCRIPTOR INDEX ................ 9*999.9o.ooo .... 7 FOREWORD This document is one in a series of publications known as the INIS Reference Series. It is to be used in conjunction with the indexing manual 1) and the thesaurus 2) for the preparation of INIS input by national and regional centrea. The thesaurus and terminology charts in their first edition (Rev.0) were produced as the result of an agreement between the International Atomic Energy Agency (IAEA) and the European Atomic Energy Community (Euratom). Except for minor changesq the terminology and the interrela- tionships btween rms are those of the December 1969 edition of the Euratom Thesaurus 3) In all matters of subject indexing and ontrol, the IAEA followed the recommendations of Euratom for these charts. Credit and responsibility for the present version of these charts must go to Euratom. Suggestions for improvement from all interested parties. particularly those that are contributing to or utilizing the INIS magnetic-tape services are welcomed. These should be addressed to: The Thesaurus Speoialist/INIS Section Division of Scientific and Tohnioal Information International Atomic Energy Agency P.O. Box 590 A-1011 Vienna, Austria International Atomic Energy Agency Division of Sientific and Technical Information INIS Section June 1970 1) IAEA-INIS-12 (INIS: Manual for Indexing) 2) IAEA-INIS-13 (INIS: Thesaurus) 3) EURATOM Thesaurusq, Euratom Nuclear Documentation System. -
Program of the Sessions San Diego, California, January 9–12, 2013
Program of the Sessions San Diego, California, January 9–12, 2013 AMS Short Course on Random Matrices, Part Monday, January 7 I MAA Short Course on Conceptual Climate Models, Part I 9:00 AM –3:45PM Room 4, Upper Level, San Diego Convention Center 8:30 AM –5:30PM Room 5B, Upper Level, San Diego Convention Center Organizer: Van Vu,YaleUniversity Organizers: Esther Widiasih,University of Arizona 8:00AM Registration outside Room 5A, SDCC Mary Lou Zeeman,Bowdoin upper level. College 9:00AM Random Matrices: The Universality James Walsh, Oberlin (5) phenomenon for Wigner ensemble. College Preliminary report. 7:30AM Registration outside Room 5A, SDCC Terence Tao, University of California Los upper level. Angles 8:30AM Zero-dimensional energy balance models. 10:45AM Universality of random matrices and (1) Hans Kaper, Georgetown University (6) Dyson Brownian Motion. Preliminary 10:30AM Hands-on Session: Dynamics of energy report. (2) balance models, I. Laszlo Erdos, LMU, Munich Anna Barry*, Institute for Math and Its Applications, and Samantha 2:30PM Free probability and Random matrices. Oestreicher*, University of Minnesota (7) Preliminary report. Alice Guionnet, Massachusetts Institute 2:00PM One-dimensional energy balance models. of Technology (3) Hans Kaper, Georgetown University 4:00PM Hands-on Session: Dynamics of energy NSF-EHR Grant Proposal Writing Workshop (4) balance models, II. Anna Barry*, Institute for Math and Its Applications, and Samantha 3:00 PM –6:00PM Marina Ballroom Oestreicher*, University of Minnesota F, 3rd Floor, Marriott The time limit for each AMS contributed paper in the sessions meeting will be found in Volume 34, Issue 1 of Abstracts is ten minutes. -
2003 Newsletter
1.6180339887498948482045868343656381177203091798057628621354486227052604628189024497072072041893911374847540880753868917521266338622235369317931800607667263544333890865959395829056 M e t r o M a t h 2.7182818284590452353602874713526624977572470936999595749669676277240766303535475945713821785251664274274663919320030599218174135966290435729003342952605956307381323286279434907632 N e w s l e t t e r Metropolitan New York Section of The Mathematical Association of America February 2003 3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679821480865132823066470938446095505822317253594081284811174502841027019385211055 Bronx Brooklyn Columbia Dutchess Greene Manhattan Nassau Orange Putnam Queens Richmond Rockland Suffolk Sullivan Ulster Westchester 1.7724538509055160272981674833411451827975494561223871282138077898529112845910321813749506567385446654162268236242825706662361528657244226025250937096027870684620376986531051228499 A N N U A L M E E T I N G Saturday, 3 May 2003 9:00 AM − 5:00 PM LaGuardia Community College (CUNY) Long Island City, New York (Inquire Within for More Information) E L E C T I O N B A L L O T E N C L O S E D SECTION OFFICERS Section Governor Raymond N. Greenwell (516) 463-5573 (2002 – 2005) Hofstra University [email protected] Chair John (Jack) Winn (631) 420-2182 (2001 – 2003) Farmingdale (SUNY) [email protected] Chair-Elect Abraham S. Mantell (516) 572-8092 (2001 – 2003) Nassau Community College (SUNY) [email protected] Secretary Dan King (914) 395-2424 (2000 – 2003) -
Talking Book Topics March-April 2015
Talking Book Topics March–April 2015 Volume 81, Number 2 About Talking Book Topics Talking Book Topics is published bimonthly in audio, large-print, and online formats and distributed at no cost to individuals who are blind or have a physically disability and who participate in the Library of Congress reading program. It lists digital audiobooks and magazines available through a network of cooperating libraries and covers news of developments and activities in network library services. The annotated list in this issue is limited to titles recently added to the national collection, which contains thousands of fiction and nonfiction titles, including bestsellers, classics, biographies, romance novels, mysteries, and how-to guides. Some books in Spanish are also available. To explore the wide range of books in the national collection, access the NLS International Union Catalog online at loc.gov/nls or contact your local cooperating library. Talking Book Topics is available online in HTML at www.loc.gov/nls/tbt and in downloadable audio files on the NLS Braille and Audio Reading Download (BARD) service at http://nlsbard.loc.gov/. Library of Congress, Washington 2015 Catalog Card Number 60-46157 ISSN 0039-9183 Where to write Order talking books through your local cooperating library. If you wish to make changes in your current subscription, please also contact your local cooperating library. Patrons who are American citizens living abroad may request delivery to foreign addresses by contacting the overseas librarian by phone at (202) 707-5100 or e-mail at [email protected]. Only send correspondence about editorial matters to: Publications and Media Page 1 of 86 Section, National Library Service for the Blind and Physically Handicapped, Library of Congress, Washington DC, 20542-0002. -
SCIENCE ORGANIZING COMMITTEE Patrick Pinet IRAP, Toulouse
SCIENCE ORGANIZING COMMITTEE Patrick Pinet IRAP, Toulouse University, France (Chair) Mahesh Anand Open University, UK (Co-Chair) James Carpenter Ana Cernok LOCAL ORGANIZING COMMITTEE Patrick Pinet Serge Chevrel Serge Chevrel Doris Daou Marie-Ange Albouy Simone Pirrotta Gaël David Yves Daydou Kristina Gibbs Dolorès Granat Harry Hiesinger Jérémie Lasue Greg Schmidt Alice Stephant Wim van Westrenen 2 Updated: 2 May 2018 European Lunar Symposium Toulouse 2018 Meeting information Welcome to Toulouse at the Sixth European Lunar Symposium (ELS)! We are hoping to have a great meeting, demonstrating the diversity of the current lunar research in Europe and elsewhere, and continuing to provide a platform to the European lunar researchers for networking as well as exchanging news ideas and latest results in the field of lunar exploration. We acknowledge the support of Toulouse University and NASA SSERVI (Solar System Exploration Research Virtual Institute). Our special thanks to our SSERVI colleagues, Kristina Gibbs, Jennifer Baer, Ashcon Nejad and to Dolorès Granat at IRAP (Institut de Recherche en Astrophysique et Planétologie)/ OMP (Observatoire Midi-Pyrénées) for their contribution to the meeting preparation and program implementation. Members of the Science Organizing Committee are thanked for their input in putting together an exciting program and for volunteering to chair various sessions in this meeting. Our special thanks for Ana Cernok and Alice Stephant from the Open University for putting together the abstract booklet. MEETING VENUE The ELS will take place at the museum of modern and contemporary art, called “Les Abattoirs”. It is located in the center of Toulouse, close to the “Garonne” river. The street address is 76 Allées Charles de Fitte, 31300 Toulouse. -
South Pole-Aitken Basin
Feasibility Assessment of All Science Concepts within South Pole-Aitken Basin INTRODUCTION While most of the NRC 2007 Science Concepts can be investigated across the Moon, this chapter will focus on specifically how they can be addressed in the South Pole-Aitken Basin (SPA). SPA is potentially the largest impact crater in the Solar System (Stuart-Alexander, 1978), and covers most of the central southern farside (see Fig. 8.1). SPA is both topographically and compositionally distinct from the rest of the Moon, as well as potentially being the oldest identifiable structure on the surface (e.g., Jolliff et al., 2003). Determining the age of SPA was explicitly cited by the National Research Council (2007) as their second priority out of 35 goals. A major finding of our study is that nearly all science goals can be addressed within SPA. As the lunar south pole has many engineering advantages over other locations (e.g., areas with enhanced illumination and little temperature variation, hydrogen deposits), it has been proposed as a site for a future human lunar outpost. If this were to be the case, SPA would be the closest major geologic feature, and thus the primary target for long-distance traverses from the outpost. Clark et al. (2008) described four long traverses from the center of SPA going to Olivine Hill (Pieters et al., 2001), Oppenheimer Basin, Mare Ingenii, and Schrödinger Basin, with a stop at the South Pole. This chapter will identify other potential sites for future exploration across SPA, highlighting sites with both great scientific potential and proximity to the lunar South Pole.