Joos, Georg
1986-01-01
Among the finest, most comprehensive treatments of theoretical physics ever written, this classic volume comprises a superb introduction to the main branches of the discipline and offers solid grounding for further research in a variety of fields. Students will find no better one-volume coverage of so many essential topics; moreover, since its first publication, the book has been substantially revised and updated with additional material on Bessel functions, spherical harmonics, superconductivity, elastomers, and other subjects.The first four chapters review mathematical topics needed by theo
International Nuclear Information System (INIS)
This report is a survey of the studies done in the Theoretical Physics Division of the Nuclear Physics Institute; the subjects studied in theoretical nuclear physics were the few-nucleon problem, nuclear structure, nuclear reactions, weak interactions, intermediate energy and high energy physics. In this last field, the subjects studied were field theory, group theory, symmetry and strong interactions [fr
International Nuclear Information System (INIS)
Anon.
The studies in 1977 are reviewed. In theoretical nuclear physics: nuclear structure, nuclear reactions, intermediate energy physics; in elementary particle physics: field theory, strong interactions dynamics, nucleon-nucleon interactions, new particles, current algebra, symmetries and quarks are studied [fr
Theoretical solid state physics
International Nuclear Information System (INIS)
Anon.
1977-01-01
Research activities at ORNL in theoretical solid state physics are described. Topics covered include: surface studies; particle-solid interactions; electronic and magnetic properties; and lattice dynamics
International Nuclear Information System (INIS)
Anon.
1980-01-01
Research activities of the theoretical physics division for 1979 are described. Short summaries are given of specific research work in the following fields: nuclear structure, nuclear reactions, intermediate energy physics, elementary particles [fr
Theoretical Mechanics Theoretical Physics 1
Dreizler, Reiner M
2011-01-01
After an introduction to basic concepts of mechanics more advanced topics build the major part of this book. Interspersed is a discussion of selected problems of motion. This is followed by a concise treatment of the Lagrangian and the Hamiltonian formulation of mechanics, as well as a brief excursion on chaotic motion. The last chapter deals with applications of the Lagrangian formulation to specific systems (coupled oscillators, rotating coordinate systems, rigid bodies). The level of this textbook is advanced undergraduate. The authors combine teaching experience of more than 40 years in all fields of Theoretical Physics and related mathematical disciplines and thorough knowledge in creating advanced eLearning content. The text is accompanied by an extensive collection of online material, in which the possibilities of the electronic medium are fully exploited, e.g. in the form of applets, 2D- and 3D-animations. - A collection of 74 problems with detailed step-by-step guidance towards the solutions. - A col...
Theoretical physics and astrophysics
Ginzburg, Vitalii Lazarevich
1979-01-01
The aim of this book is to present, on the one hand various topics in theoretical physics in depth - especially topics related to electrodynamics - and on the other hand to show how these topics find applications in various aspects of astrophysics. The first text on theoretical physics and astrophysical applications, it covers many recent advances including those in X-ray, &ggr;-ray and radio-astronomy, with comprehensive coverage of the literature
Blatt, John M
1979-01-01
A classic work by two leading physicists and scientific educators endures as an uncommonly clear and cogent investigation and correlation of key aspects of theoretical nuclear physics. It is probably the most widely adopted book on the subject. The authors approach the subject as ""the theoretical concepts, methods, and considerations which have been devised in order to interpret the experimental material and to advance our ability to predict and control nuclear phenomena.""The present volume does not pretend to cover all aspects of theoretical nuclear physics. Its coverage is restricted to
3. Theoretical Physics Division
International Nuclear Information System (INIS)
For the period September 1980 - Aug 1981, the studies in theoretical physics divisions have been compiled under the following headings: in nuclear physics, nuclear structure, nuclear reactions and intermediate energies; in particle physics, NN and NantiN interactions, dual topological unitarization, quark model and quantum chromodynamics, classical and quantum field theories, non linear integrable equations and topological preons and Grand unified theories. A list of publications, lectures and meetings is included [fr
Theoretical high energy physics
International Nuclear Information System (INIS)
Lee, T.D.
1991-01-01
This report discusses theoretical research in high energy physics at Columbia University. Some of the research topics discussed are: quantum chromodynamics with dynamical fermions; lattice gauge theory; scattering of neutrinos by photons; atomic physics constraints on the properties of ultralight-ultraweak gauge bosons; black holes; Chern- Simons physics; S-channel theory of superconductivity; charged boson system; gluon-gluon interactions; high energy scattering in the presence of instantons; anyon physics; causality constraints on primordial magnetic manopoles; charged black holes with scalar hair; properties of Chern-Aimona-Higgs solitons; and extended inflationary universe
Theoretical physics 8 statistical physics
Nolting, Wolfgang
2018-01-01
This textbook offers a clear and comprehensive introduction to statistical physics, one of the core components of advanced undergraduate physics courses. It follows on naturally from the previous volumes in this series, using methods of probability theory and statistics to solve physical problems. The first part of the book gives a detailed overview on classical statistical physics and introduces all mathematical tools needed. The second part of the book covers topics related to quantized states, gives a thorough introduction to quantum statistics, followed by a concise treatment of quantum gases. Ideally suited to undergraduate students with some grounding in quantum mechanics, the book is enhanced throughout with learning features such as boxed inserts and chapter summaries, with key mathematical derivations highlighted to aid understanding. The text is supported by numerous worked examples and end of chapter problem sets. About the Theoretical Physics series Translated from the renowned and highly successf...
Riemann and Theoretical Physics
Indian Academy of Sciences (India)
Home; Journals; Resonance – Journal of Science Education; Volume 11; Issue 11. Riemann and Theoretical Physics. Joseph Samuel. General Article Volume 11 Issue 11 November 2006 pp 56-60. Fulltext. Click here to view fulltext PDF. Permanent link: http://www.ias.ac.in/article/fulltext/reso/011/11/0056-0060. Keywords.
Theoretical solid state physics
Haug, Albert
2013-01-01
Theoretical Solid State Physics, Volume 1 focuses on the study of solid state physics. The volume first takes a look at the basic concepts and structures of solid state physics, including potential energies of solids, concept and classification of solids, and crystal structure. The book then explains single-electron approximation wherein the methods for calculating energy bands; electron in the field of crystal atoms; laws of motion of the electrons in solids; and electron statistics are discussed. The text describes general forms of solutions and relationships, including collective electron i
Compendium of theoretical physics
Wachter, Armin
2006-01-01
Mechanics, Electrodynamics, Quantum Mechanics, and Statistical Mechanics and Thermodynamics comprise the canonical undergraduate curriculum of theoretical physics. In Compendium of Theoretical Physics, Armin Wachter and Henning Hoeber offer a concise, rigorous and structured overview that will be invaluable for students preparing for their qualifying examinations, readers needing a supplement to standard textbooks, and research or industrial physicists seeking a bridge between extensive textbooks and formula books. The authors take an axiomatic-deductive approach to each topic, starting the discussion of each theory with its fundamental equations. By subsequently deriving the various physical relationships and laws in logical rather than chronological order, and by using a consistent presentation and notation throughout, they emphasize the connections between the individual theories. The reader’s understanding is then reinforced with exercises, solutions and topic summaries. Unique Features: Every topic is ...
Friedrich, Harald
2017-01-01
This expanded and updated well-established textbook contains an advanced presentation of quantum mechanics adapted to the requirements of modern atomic physics. It includes topics of current interest such as semiclassical theory, chaos, atom optics and Bose-Einstein condensation in atomic gases. In order to facilitate the consolidation of the material covered, various problems are included, together with complete solutions. The emphasis on theory enables the reader to appreciate the fundamental assumptions underlying standard theoretical constructs and to embark on independent research projects. The fourth edition of Theoretical Atomic Physics contains an updated treatment of the sections involving scattering theory and near-threshold phenomena manifest in the behaviour of cold atoms (and molecules). Special attention is given to the quantization of weakly bound states just below the continuum threshold and to low-energy scattering and quantum reflection just above. Particular emphasis is laid on the fundamen...
Theoretical high energy physics
International Nuclear Information System (INIS)
Lee, T.D.
1990-05-01
This report discusses progress on theoretical high energy physics at Columbia University in New York City. Some of the topics covered are: Chern-Simons gauge field theories; dynamical fermion QCD calculations; lattice gauge theory; the standard model of weak and electromagnetic interactions; Boson-fermion model of cuprate superconductors; S-channel theory of superconductivity and axial anomaly and its relation to spin in the parton model
Theoretical physics 5 thermodynamics
Nolting, Wolfgang
2017-01-01
This concise textbook offers a clear and comprehensive introduction to thermodynamics, one of the core components of undergraduate physics courses. It follows on naturally from the previous volumes in this series, defining macroscopic variables, such as internal energy, entropy and pressure,together with thermodynamic principles. The first part of the book introduces the laws of thermodynamics and thermodynamic potentials. More complex themes are covered in the second part of the book, which describes phases and phase transitions in depth. Ideally suited to undergraduate students with some grounding in classical mechanics, the book is enhanced throughout with learning features such as boxed inserts and chapter summaries, with key mathematical derivations highlighted to aid understanding. The text is supported by numerous worked examples and end of chapter problem sets. About the Theoretical Physics series Translated from the renowned and highly successful German editions, the eight volumes of this series cove...
Theoretical physics 3 electrodynamics
Nolting, Wolfgang
2016-01-01
This textbook offers a clear and comprehensive introduction to electrodynamics, one of the core components of undergraduate physics courses. It follows on naturally from the previous volumes in this series. The first part of the book describes the interaction of electric charges and magnetic moments by introducing electro- and magnetostatics. The second part of the book establishes deeper understanding of electrodynamics with the Maxwell equations, quasistationary fields and electromagnetic fields. All sections are accompanied by a detailed introduction to the math needed. Ideally suited to undergraduate students with some grounding in classical and analytical mechanics, the book is enhanced throughout with learning features such as boxed inserts and chapter summaries, with key mathematical derivations highlighted to aid understanding. The text is supported by numerous worked examples and end of chapter problem sets. About the Theoretical Physics series Translated from the renowned and highly successful Germa...
Theoretical physics. Quantum mechanics
International Nuclear Information System (INIS)
Rebhan, Eckhard
2008-01-01
From the first in two comprehensive volumes appeared Theoretical Physics of the author by this after Mechanics and Electrodynamics also Quantum mechanics appears as thinner single volume. First the illustrative approach via wave mechanics is reproduced. The more abstract Hilbert-space formulation introduces the author later by postulates, which are because of the preceding wave mechanics sufficiently plausible. All concepts of quantum mechanics, which contradict often to the intuitive understanding formed by macroscopic experiences, are extensively discussed and made by means of many examples as well as problems - in the largest part provided with solutions - understandable. To the interpretation of quantum mechanics an extensive special chapter is dedicated. this book arose from courses on theoretical physics, which the author has held at the Heinrich-Heine University in Duesseldorf, and was in numerous repetitions fitted to the requirement of the studyings. it is so designed that it is also after the study suited as reference book or for the renewing. All problems are very thoroughly and such extensively studied that each step is separately reproducible. About motivation and good understandability is cared much
Energy Technology Data Exchange (ETDEWEB)
Cohen, Andrew [Boston Univ., MA (United States); Schmaltz, Martin [Boston Univ., MA (United States); Katz, Emmanuel [Boston Univ., MA (United States); Rebbi, Claudio [Boston Univ., MA (United States); Glashow, Sheldon [Boston Univ., MA (United States); Brower, Richard [Boston Univ., MA (United States); Pi, So-Young [Boston Univ., MA (United States)
2016-09-30
This award supported a broadly based research effort in theoretical particle physics, including research aimed at uncovering the laws of nature at short (subatomic) and long (cosmological) distances. These theoretical developments apply to experiments in laboratories such as CERN, the facility that operates the Large Hadron Collider outside Geneva, as well as to cosmological investigations done using telescopes and satellites. The results reported here apply to physics beyond the so-called Standard Model of particle physics; physics of high energy collisions such as those observed at the Large Hadron Collider; theoretical and mathematical tools and frameworks for describing the laws of nature at short distances; cosmology and astrophysics; and analytic and computational methods to solve theories of short distance physics. Some specific research accomplishments include + Theories of the electroweak interactions, the forces that give rise to many forms of radioactive decay; + Physics of the recently discovered Higgs boson. + Models and phenomenology of dark matter, the mysterious component of the universe, that has so far been detected only by its gravitational effects. + High energy particles in astrophysics and cosmology. + Algorithmic research and Computational methods for physics of and beyond the Standard Model. + Theory and applications of relativity and its possible limitations. + Topological effects in field theory and cosmology. + Conformally invariant systems and AdS/CFT. This award also supported significant training of students and postdoctoral fellows to lead the research effort in particle theory for the coming decades. These students and fellows worked closely with other members of the group as well as theoretical and experimental colleagues throughout the physics community. Many of the research projects funded by this grant arose in response to recently obtained experimental results in the areas of particle physics and cosmology. We describe a few of
Charm physics: theoretical review
Petrov, Alexey A.
2003-01-01
We review recent developments in charm physics, focusing on the physics of charmed mesons. We discuss charm spectroscopy, decay constants, as well as searches for new physics with charmed mesons. We discuss D0-anti-D0 mixing and CP-violation in charm decays. We also present the modified Nelson plot of charm mixing predictions.
Charm physics: theoretical review
International Nuclear Information System (INIS)
Petrov, Alexey A.
2003-01-01
Charm physics plays a unique dual role in the modern investigation of flavor physics. Charm decay and production experiments provide valuable checks and supporting measurements for studies of CP-violation in measurements of CKM parameters in b-physics, as well as outstanding opportunities for searches for new physics. Historically, many methods of heavy quark physics have been first tested in charmed hadrons. The fact that a b-quark mainly decays into a charm quark makes charm physics an integral part of any b-physics program. In many cases direct measurements of charm decay parameters directly affect the studies of fundamental physics in B decays. This year brought several interesting developments in some seemingly well-understood sectors of charm physics, such as meson spectroscopy. We review recent developments in charm physics, focusing on the physics of charmed mesons. We discuss charm spectroscopy, decay constants and transition form factors, as well as searches for new physics with charmed mesons. We discuss D 0 D 0 -bar mixing and CP-violation in charm decays. (author)
Institute for Theoretical Physics
Energy Technology Data Exchange (ETDEWEB)
Giddings, S.B.; Ooguri, H.; Peet, A.W.; Schwarz, J.H.
1998-06-01
String theory is the only serious candidate for a unified description of all known fundamental particles and interactions, including gravity, in a single theoretical framework. Over the past two years, activity in this subject has grown rapidly, thanks to dramatic advances in understanding the dynamics of supersymmetric field theories and string theories. The cornerstone of these new developments is the discovery of duality which relates apparently different string theories and transforms difficult strongly coupled problems of one theory into weakly coupled problems of another theory.
Theoretical high energy physics
International Nuclear Information System (INIS)
Lee, T.D.
1992-01-01
This progress report discusses research by Columbia University staff in high energy physics. Some of the topics discussed are as follows: lattice gauge theory; quantum chromodynamics; parity doublets; solitons; baryon number violation; black holes; magnetic monopoles; gluon plasma; Chern-Simons theory; and the inflationary universe
Theoretical and Experimental Physics
Energy Technology Data Exchange (ETDEWEB)
Nelson, Ann E. [Univ. of Washington, Seattle, WA (United States); Ellis, Stephen D. [Univ. of Washington, Seattle, WA (United States); Karch, Andreas [Univ. of Washington, Seattle, WA (United States); Rosenberg, Leslie [Univ. of Washington, Seattle, WA (United States); Sharpe, Stephene R. [Univ. of Washington, Seattle, WA (United States); Wilkes, R. Jeffrey [Univ. of Washington, Seattle, WA (United States); Yaffe, Laurence G. [Univ. of Washington, Seattle, WA (United States)
2015-04-07
We report on progress towards finding axion dark matter, neutrino oscillation parameters, Use of the gravity/gauge correspondence to to calculations in strongly coupled systems, use of jet substructure to search for new physics, use of lattice QCD to compute weak matrix elements, constraints on dark matter interactions from neutron stars, exotic Higgs searches, and new dark matter models.
Research in theoretical physics
International Nuclear Information System (INIS)
Domokos, G.; Kovesi-Domokos, S.
1992-12-01
Progress made in the following areas is summarized: simulation of extensive air showers induced by interactions existing beyond the currently accepted ''Standard Model'' of elementary particle interactions; search for physics beyond the ''Standard Model'' in gluonic inclusive decays of heavy quarks; obtaining limits on the applicability of the special theory of relativity; an improved method of obtaining upper limits on the masses of primaries of extensive air showers associated with point sources in the sky. 8 figs., 1 tab., 73 refs
Theoretical High Energy Physics
Energy Technology Data Exchange (ETDEWEB)
Christ, Norman H.; Weinberg, Erick J.
2014-07-14
we provide reports from each of the six faculty supported by the Department of Energy High Energy Physics Theory grant at Columbia University. Each is followed by a bibliography of the references cited. A complete list of all of the publications in the 12/1/2010-04/30/2014 period resulting from research supported by this grant is provided in the following section. The final section lists the Ph.D. dissertations based on research supported by the grant that were submitted during this period.
Department of Theoretical Physics - Overview
International Nuclear Information System (INIS)
Kwiecinski, J.
2000-01-01
Full text: Research activity of the Department of Theoretical Physics concerns theoretical high-energy and elementary particle physics, intermediate energy particle physics, theoretical nuclear physics, theory of nuclear matter, theory of quark-gluon plasma and of relativistic heavy-ion collisions, theoretical astrophysics and general physics. There is some emphasis on the phenomenological applications of the theoretical research, yet the more formal problems are also considered. The detailed summary of the research projects and of the results obtained in various fields is given in the abstracts. Our Department actively collaborates with other Departments of the Institute as well as with several scientific institutions both in Poland and abroad. In particular members of our Department participate in the EC network which allows mobility of researchers. Several members of our Department have also participated in the research projects funded by the Polish Committee for Scientific Research (KBN). The complete list of grants is listed separately. Besides pure research, members of our Department are also involved in graduate and undergraduate teaching activity both at our Institute as well as at other academic institutions in Cracow. At present five students are working for their Ph.D. or MSc degrees under supervision of the senior members from the Department. We continue our participation at the EC SOCRATES-ERASMUS educational programme which allows exchange of graduate students between our Department and the Department of Physics of the University of Durham in the UK. (author)
Energy Technology Data Exchange (ETDEWEB)
Vahala, George M. [College of William and Mary, Williamsburg, VA (United States)
2013-12-31
Lattice Boltzmann algorithms are a mesoscopic method to solve problems in nonlinear physics which are highly parallelized – unlike the direction solution of the original problem. These methods are applied to both fluid and magnetohydrodynamic turbulence. By introducing entropic constraints one can enforce the positive definiteness of the distribution functions and so be able to simulate fluids at high Reynolds numbers without numerical instabilities. By introducing a vector distribution function for the magnetic field one can enforce the divergence free condition on the magnetic field automatically, without the need of divergence cleaning as needed in most direct numerical solutions of the resistive magnetohydrodynamic equations. The principal reason for the high parallelization of lattice Boltzmann codes is that they consist of a kinetic collisional relaxation step (which is purely local) followed by a simple shift of the relaxed data to neighboring lattice sites. In large eddy simulations, the closure schemes are highly nonlocal – the most famous of these schemes is that due to Smagorinsky. Under a lattice Boltzmann representation the Smagorinsky closure is purely local – being simply a particular moment on the perturbed distribution fucntions. After nonlocal fluid moment models were discovered to represent Landau damping, it was found possible to model these fluid models using an appropriate lattice Boltzmann algorithm. The close to ideal parallelization of the lattice Boltzmann codes permitted us to be Gordon Bell finalists on using the Earth Simulation in Japan. We have also been involved in the radio frequency propagation of waves into a tokamak and into a spherical overdense tokamak plasma. Initially we investigated the use of a quasi-optical grill for the launching of lower hybrid waves into a tokamak. It was found that the conducting walls do not prevent the rods from being properly irradiated, the overloading of the quasi-optical grill is not severe
Mechanics lectures on theoretical physics
Sommerfeld, Arnold Johannes Wilhelm
1952-01-01
Mechanics: Lectures on Theoretical Physics, Volume I covers a general course on theoretical physics. The book discusses the mechanics of a particle; the mechanics of systems; the principle of virtual work; and d'alembert's principle. The text also describes oscillation problems; the kinematics, statics, and dynamics of a rigid body; the theory of relative motion; and the integral variational principles of mechanics. Lagrange's equations for generalized coordinates and the theory of Hamilton are also considered. Physicists, mathematicians, and students taking Physics courses will find the book
Department of Theoretical Physics - Overview
International Nuclear Information System (INIS)
Kwiecinski, J.
2001-01-01
Full text: Research activity of the Department of Theoretical Physics concerns theoretical high-energy and elementary particle physics, intermediate energy particle physics, theoretical nuclear physics, theory of nuclear matter, theory of quark-gluon plasma and relativistic heavy-ion collisions, theoretical astrophysics and general physics. There is some emphasis on the phenomenological applications of the theoretical research yet more formal problems are also considered. A detailed summary of the research projects and of the results obtained in various field is given in the abstracts. Our Department actively collaborates with other Departments of the Institute as well as with several scientific institutions both in Poland and abroad. In particular, members of our Department participate in the EC network, which stimulates the mobility of researchers. Several members of our Department also participated in the research projects funded by the Polish Committee for Scientific Research (KBN). Besides pure research, members of our Department are also involved in graduate and up graduate teaching activity at our Institute as well as at other academic institution in Cracow. At present nine students are working on their Ph.D. degrees under the supervision of senior members of the Department. (author)
Department of Theoretical Physics - Overview
International Nuclear Information System (INIS)
Kwiecinski, J.
2002-01-01
Full text: Research activity of the Department of Theoretical Physics concerns theoretical high energy and elementary particle physics, intermediate energy particle physics, theoretical nuclear physics, theory of nuclear matter, theory of quark-gluon plasma and of relativistic heavy ion collisions, theoretical astrophysics and general physics. There is some emphasis on the phenomenological applications of the theoretical research yet the more formal problems are also considered. The detailed summary of the research projects and of the results obtained in various fields is given in the abstracts. Our Department successfully collaborates with other Departments of the Institute as well as with several scientific institutions both in Poland and abroad. In particular, members of our Department participate in the EC network which allows for the mobility of researchers. Several members of our Department have also participated in the research projects funded by the State Committee for Scientific Research. Besides pure research, members of our Department are also involved in graduate and undergraduate teaching activity both at our Institute and at other academic institutions in Cracow. At present, eight students are working towards their Ph.D. degrees under the supervision of senior members of the Department. (author)
A course in theoretical physics
Shepherd, P J
2013-01-01
This book is a comprehensive account of five extended modules covering the key branches of twentieth-century theoretical physics, taught by the author over a period of three decades to students on bachelor and master university degree courses in both physics and theoretical physics. The modules cover nonrelativistic quantum mechanics, thermal and statistical physics, many-body theory, classical field theory (including special relativity and electromagnetism), and, finally, relativistic quantum mechanics and gauge theories of quark and lepton interactions, all presented in a single, self-contained volume. In a number of universities, much of the material covered (for example, on Einstein’s general theory of relativity, on the BCS theory of superconductivity, and on the Standard Model, including the theory underlying the prediction of the Higgs boson) is taught in postgraduate courses to beginning PhD students. A distinctive feature of the book is that full, step-by-step mathematical proofs of all essentia...
Department of Theoretical Physics - Overview
International Nuclear Information System (INIS)
Kwiecinski, J.
1999-01-01
Full text: Research activity of the Department of Theoretical Physics concerns theoretical high-energy and elementary particle physics, intermediate energy particle physics, theoretical nuclear physics, theory of nuclear matter, theory of quark-gluon plasma and of relativistic heavy-ion collisions, theoretical astrophysics and general physics. There is some emphasis on the phenomenological applications of the theoretical research yet the more formal problems are also considered. The detailed summary of the research projects and of the results obtained in various fields is given in the abstracts. Our Department actively collaborates with other Departments of the Institute as well as with several scientific institutions both in Poland and abroad. In particular members of our Department participate in the EC network which allows mobility of researchers. Several members of our Department have also participated in the research projects funded by the Polish Committee for Scientific Research (KBN). The complete list of grants is listed separately. Besides pure research, members of our Department are also involved in graduate and undergraduate teaching activity both at our Institute as well as at other academic institutions in Cracow. At present five PhD students are working for their degree under supervision of the senior members from the Department. In the last year we have completed our active participation in the educational TEMPUS programme funded by the European Communities. This programme has in particular allowed exchange of students between our Department and the Department of Physics of the University of Durham in the United Kingdom. In 1998 we joined the SOCRATES - ERASMUS project which will make it possible to continue this exchange. (author)
Refresher Course in Theoretical Physics
Indian Academy of Sciences (India)
Home; Journals; Resonance – Journal of Science Education; Volume 6; Issue 7. Refresher Course in Theoretical Physics. Information and Announcements Volume 6 Issue 7 July 2001 pp 99-99. Fulltext. Click here to view fulltext PDF. Permanent link: http://www.ias.ac.in/article/fulltext/reso/006/07/0099-0099. Resonance ...
Qualitative methods in theoretical physics
Maslov, Dmitrii
2018-01-01
This book comprises a set of tools which allow researchers and students to arrive at a qualitatively correct answer without undertaking lengthy calculations. In general, Qualitative Methods in Theoretical Physics is about combining approximate mathematical methods with fundamental principles of physics: conservation laws and symmetries. Readers will learn how to simplify problems, how to estimate results, and how to apply symmetry arguments and conduct dimensional analysis. A comprehensive problem set is included. The book will appeal to a wide range of students and researchers.
Theoretical nuclear and subnuclear physics
Walecka, John Dirk
1995-01-01
This comprehensive text expertly details the numerous theoretical techniques central to the discipline of nuclear physics. It is based on lecture notes from a three-lecture series given at CEBAF (the Continuous Electron Beam Accelerator Facility), where John Dirk Walecka at the time was Scientific Director: "Graduate Quantum Mechanics", "Advanced Quantum Mechanics and Field Theory" and "Special Topics in Nuclear Physics". The primary goal of this text is pedagogical; providing a clear, logical, in-depth, and unifying treatment of many diverse aspects of modern nuclear theory ranging from the non-relativistic many-body problem to the standard model of the strong, electromagnetic, and weak interactions. Four key topics are emphasised in this text: basic nuclear structure, the relativistic nuclear many-body problem, strong-coupling QCD, and electroweak interactions with nuclei. The text is designed to provide graduate students with a basic level of understanding of modern nuclear physics so that they in turn can...
Theoretical perspectives on strange physics
International Nuclear Information System (INIS)
Ellis, J.
1983-04-01
Kaons are heavy enough to have an interesting range of decay modes available to them, and light enough to be produced in sufficient numbers to explore rare modes with satisfying statistics. Kaons and their decays have provided at least two major breakthroughs in our knowledge of fundamental physics. They have revealed to us CP violation, and their lack of flavor-changing neutral interactions warned us to expect charm. In addition, K 0 -anti K 0 mixing has provided us with one of our most elegant and sensitive laboratories for testing quantum mechanics. There is every reason to expect that future generations of kaon experiments with intense sources would add further to our knowledge of fundamental physics. This talk attempts to set future kaon experiments in a general theoretical context, and indicate how they may bear upon fundamental theoretical issues. A survey of different experiments which would be done with an Intense Medium Energy Source of Strangeness, including rare K decays, probes of the nature of CP isolation, μ decays, hyperon decays and neutrino physics is given
Theoretical Physics Division progress report
International Nuclear Information System (INIS)
1989-01-01
The research areas covered in this report are solid state and quantum physics, theoretical metallurgy, fuel modelling and reactor materials, statistical physics and the theory of fluids. Attention is drawn to a number of items: (i) the application of theories of aerosol behaviour to the interpretation of conditions in the cover-gas space of a fast reactor; (ii) studies in non-linear dynamics, dynamical instabilities and chaotic behaviour covering for example, fluid behaviour in Taylor-Couette experiments, non-linear behaviour in electronic circuits and reaction-diffusion systems; (iii) the development of finite element computational techniques to describe the periodic behaviour of a system after a Hopf bifurcation and in simulating solidification processes; (iv) safety assessment of disposal concepts for low- and intermediate-level radioactive wastes. (U.K.)
Theoretical physics 1 classical mechanics
Nolting, Wolfgang
2016-01-01
This textbook offers a clear and comprehensive introduction to classical mechanics, one of the core components of undergraduate physics courses. The book starts with a thorough introduction to the mathematical tools needed, to make this textbook self-contained for learning. The second part of the book introduces the mechanics of the free mass point and details conservation principles. The third part expands the previous to mechanics of many particle systems. Finally the mechanics of the rigid body is illustrated with rotational forces, inertia and gyroscope movement. Ideally suited to undergraduate students in their first year, the book is enhanced throughout with learning features such as boxed inserts and chapter summaries, with key mathematical derivations highlighted to aid understanding. The text is supported by numerous worked examples and end of chapter problem sets. About the Theoretical Physics series Translated from the renowned and highly successful German editions, the eight volumes of this series...
Department of Theoretical Physics. Annual report 1991
International Nuclear Information System (INIS)
1992-01-01
The research done at the Department of Theoretical Physics of the H. Niewodniczanski Institute of Nuclear Physics concerns various theoretical problems of low, medium and high energy nuclear physics, elementary particle physics, astrophysics, general physics and mathematical physics. Both formal problems as well as more phenomenologically oriented ones are being considered. The details of the results obtained in various fields are summarised in the presented abstracts. (author)
Research in Theoretical Particle Physics
Energy Technology Data Exchange (ETDEWEB)
Feldman, Hume A; Marfatia, Danny
2014-09-24
This document is the final report on activity supported under DOE Grant Number DE-FG02-13ER42024. The report covers the period July 15, 2013 – March 31, 2014. Faculty supported by the grant during the period were Danny Marfatia (1.0 FTE) and Hume Feldman (1% FTE). The grant partly supported University of Hawaii students, David Yaylali and Keita Fukushima, who are supervised by Jason Kumar. Both students are expected to graduate with Ph.D. degrees in 2014. Yaylali will be joining the University of Arizona theory group in Fall 2014 with a 3-year postdoctoral appointment under Keith Dienes. The group’s research covered topics subsumed under the Energy Frontier, the Intensity Frontier, and the Cosmic Frontier. Many theoretical results related to the Standard Model and models of new physics were published during the reporting period. The report contains brief project descriptions in Section 1. Sections 2 and 3 lists published and submitted work, respectively. Sections 4 and 5 summarize group activity including conferences, workshops and professional presentations.
All problems of theoretical physics
International Nuclear Information System (INIS)
Park, Bong Yeol
1991-09-01
This book introduces particle physics, nuclear physics, and condensed matter physics. It deals with trend of particle physics, gauge theory and renormalisation, Quark-Hadron phase transition, unified field theory and theory of internal string, supersymmetry and supergravity, Berry's connection and Quantum separation of slow versus fast dynamics, giant resonance, intermediate energy nuclear physics, unclear fission reactor physics, atomic structure of metastable defect in semiconductor, dynamics theory of condensation material world, and two-dimensional Ising model revisited.
Group theoretical methods in Physics
International Nuclear Information System (INIS)
Olmo, M.A. del; Santander, M.; Mateos Guilarte, J.M.
1993-01-01
The meeting had 102 papers. These was distributed in following areas: -Quantum groups,-Integrable systems,-Physical Applications of Group Theory,-Mathematical Results,-Geometry, Topology and Quantum Field Theory,-Super physics,-Super mathematics,-Atomic, Molecular and Condensed Matter Physics. Nuclear and Particle Physics,-Symmetry and Foundations of classical and Quantum mechanics
Research in theoretical nuclear physics
International Nuclear Information System (INIS)
1991-06-01
This report contains abstracts of ongoing projects in the following areas: strong interaction physics; relativistic heavy ion physics; nuclear structure and nuclear many-body theory; and nuclear astrophysics
Research in theoretical nuclear physics
International Nuclear Information System (INIS)
1990-06-01
We shall organize the description of our many activities under following broad headings: Strong Interaction Physics: the physics of hadrons; QCD and the nucleus; and QCD at finite temperature and high density. Relativistic Heavy Ion Physics. Nuclear Structure and Many-body Theory. Nuclear Astrophysics. While these are the main areas of activity of the Stony Brood group, they do not cover all activities
Basic course in theoretical physics. Vol. 1
International Nuclear Information System (INIS)
Dietze, H.D.
1973-01-01
This book is the first volume of an edition of two volumes which concern theoretical physics. In this volume the mechanics of a point mass, electric and magnetic fields, and the mechanics of two point, masses, rig: 1 bodies, and deformable 50 lids are considered. This book is suited for students who want to get some fundamental knowledge of theoretical physics. (HSI)
Research in theoretical nuclear physics
International Nuclear Information System (INIS)
1989-08-01
This report discusses the following areas of investigation of the Stony Brook Nuclear Theory Group: the physics of hadrons; QCD and the nucleus; QCD at finite temperature and high density; nuclear astrophysics; nuclear structure and many-body theory; and heavy ion physics
The national conference on theoretical physics. Abstracts
International Nuclear Information System (INIS)
Grecu, Dan; Visinescu, Anca;
2002-01-01
The first edition of the National Conference on Theoretical Physics held on September 13-16, 2002 in Bucharest, Romania was organized by the Theoretical Physics Department of the Horia Hulubei National Institute of Physics and Nuclear Engineering in cooperation with the Physics Department of the University of Bucharest . There were presented 51 communications grouped in five sections as follows: 1. Quantum Field Theory, Elementary Particles, Gravitation; 2. Atomic, Molecular and Nuclear Theory, Astrophysics; 3. Condensed Matter Theory, Statistical Physics; 4. Computational and Mathematical Physics, Nonlinear Phenomena; 5. Interdisciplinary Fields
Theoretical problems in accelerator physics
International Nuclear Information System (INIS)
Kroll, N.M.
1993-01-01
This report discusses the following topics in accelerator physics: radio frequency pulse compression and power transport; computational methods for the computer analysis of microwave components; persistent wakefields associated with waveguide damping of higher order modes; and photonic band gap cavities
International Conference on Theoretical and Computational Physics
2016-01-01
Int'l Conference on Theoretical and Computational Physics (TCP 2016) will be held from August 24 to 26, 2016 in Xi'an, China. This Conference will cover issues on Theoretical and Computational Physics. It dedicates to creating a stage for exchanging the latest research results and sharing the advanced research methods. TCP 2016 will be an important platform for inspiring international and interdisciplinary exchange at the forefront of Theoretical and Computational Physics. The Conference will bring together researchers, engineers, technicians and academicians from all over the world, and we cordially invite you to take this opportunity to join us for academic exchange and visit the ancient city of Xi’an.
Research in theoretical nuclear physics
International Nuclear Information System (INIS)
Udagawa, Takeshi.
1990-10-01
The work done during the past year or so may be divided into three separate areas, low energy nuclear reactions, intermediate energy physics and nuclear structure studies. In this paper, we shall separately summarize our achievements made in these three areas
Studies in theoretical particle physics
International Nuclear Information System (INIS)
Kaplan, D.B.
1992-01-01
This report focuses on research on three distinct areas of particle physics: Chiral Fermions on the Lattice; Weak Scale Baryogenesis; analysis of parity violating nuclear forces, and other an attempt to render the electric dipole moment of the neutron immune from quantum gravity corrections
B physics - a theoretical review
International Nuclear Information System (INIS)
Rosner, J.L.
1998-01-01
This overview of what we can hope to learn from high-statistics experiments in B physics in the next few years includes (a) a review of parameters of the Cabibbo-Kobayashi-Maskawa (CKM) matrix; (b) direct determination of magnitudes of CKM elements; (c) forthcoming information from studies of kaons; (d) CP violation in B decays; (e) aspects of rate measurements; (f) the role of charm-anticharm annihilation; (g) remarks on tagging; and (h) effects beyond the standard model. (orig.)
Studies In Theoretical High Energy Particle Physics
Energy Technology Data Exchange (ETDEWEB)
Keung, Wai Yee [Univ. of Illinois, Chicago, IL (United States)
2017-07-01
This is a final technical report for grant no. DE-SC0007948 describing research activities in theoretical high energy physics at University of Illinois at Chicago for the whole grant period from July 1, 2012 to March 31, 2017.
Eight lectures on theoretical physics
Planck, Max
1997-01-01
In 1909 the great German physicist and Nobel Prize winner Max Planck (1858-1947) delivered a series of eight lectures at Columbia University giving a fascinating overview of the new state of physics, which he had played a crucial role in bringing about. The first, third, fifth, and sixth lectures present his account of the revolutionary developments occasioned when he first applied the quantum hypothesis to blackbody radiation. The reader is given an invaluable opportunity to witness Planck's thought processes both on the level of philosophical principles as well as their application to physi
Theoretical nuclear physics. Final report
Energy Technology Data Exchange (ETDEWEB)
NONE
1997-05-01
As the three-year period FY93-FY96 ended, there were six senior investigators on the grant full-time: Bulgac, Henley, Miller, Savage, van Kolck and Wilets. This represents an increase of two members from the previous three-year period, achieved with only a two percent increase over the budget for FY90-FY93. In addition, the permanent staff of the Institute for Nuclear Theory (George Bertsch, Wick Haxton, and David Kaplan) continued to be intimately associated with our physics research efforts. Aurel Bulgac joined the Group in September, 1993 as an assistant professor, with promotion requested by the Department and College of Arts and Sciences by September, 1997. Martin Savage, who was at Carnegie-Mellon University, jointed the Physics Department in September, 1996. U. van Kolck continued as research assistant professor, and we were supporting one postdoctoral research associate, Vesteinn Thorssen, who joined us in September, 1995. Seven graduate students were being supported by the Grant (Chuan-Tsung Chan, Michael Fosmire, William Hazelton, Jon Karakowski, Jeffrey Thompson, James Walden and Mitchell Watrous).
Theoretical nuclear physics. Final report
International Nuclear Information System (INIS)
1997-01-01
As the three-year period FY93-FY96 ended, there were six senior investigators on the grant full-time: Bulgac, Henley, Miller, Savage, van Kolck and Wilets. This represents an increase of two members from the previous three-year period, achieved with only a two percent increase over the budget for FY90-FY93. In addition, the permanent staff of the Institute for Nuclear Theory (George Bertsch, Wick Haxton, and David Kaplan) continued to be intimately associated with our physics research efforts. Aurel Bulgac joined the Group in September, 1993 as an assistant professor, with promotion requested by the Department and College of Arts and Sciences by September, 1997. Martin Savage, who was at Carnegie-Mellon University, jointed the Physics Department in September, 1996. U. van Kolck continued as research assistant professor, and we were supporting one postdoctoral research associate, Vesteinn Thorssen, who joined us in September, 1995. Seven graduate students were being supported by the Grant (Chuan-Tsung Chan, Michael Fosmire, William Hazelton, Jon Karakowski, Jeffrey Thompson, James Walden and Mitchell Watrous)
Theoretical physics 2 analytical mechanics
Nolting, Wolfgang
2016-01-01
This textbook offers a clear and comprehensive introduction to analytical mechanics, one of the core components of undergraduate physics courses.It follows on naturally from the previous volumes in this series, thus expanding the knowledge in classical mechanics. The book starts with a thorough introduction into Lagrangian mechanics, detailing the d’Alembert principle, Hamilton’s principle and conservation laws. It continues with an in-depth explanation of Hamiltonian mechanics, illustrated by canonical and Legendre transformation, the generalization to quantum mechanics through Poisson brackets and all relevant variational principles. Finally, the Hamilton-Jacobi theory and the transition to wave mechanics are presented in detail. Ideally suited to undergraduate students with some grounding in classical mechanics, the book is enhanced throughout with learning features such as boxed inserts and chapter summaries, with key mathematical derivations highlighted to aid understanding. The text is supported by ...
Basic theoretical physics a concise overview
Krey, Uwe
2007-01-01
This concise treatment embraces, in four parts, all the main aspects of theoretical physics (I . Mechanics and Basic Relativity, II. Electrodynamics and Aspects of Optics, III. Non-relativistic Quantum Mechanics, IV. Thermodynamics and Statistical Physics). It summarizes the material that every graduate student, physicist working in industry, or physics teacher should master during his or her degree course. It thus serves both as an excellent revision and preparation tool, and as a convenient reference source, covering the whole of theoretical physics. It may also be successfully employed to deepen its readers' insight and add new dimensions to their understanding of these fundamental concepts. Recent topics such as holography and quantum cryptography are included, thus making this a unique contribution to the learning material for theoretical physics.
Department of Theoretical Physics. Annual Report 1989
International Nuclear Information System (INIS)
1990-01-01
Abstracts of studies done in 1989 at the Department of Theoretical Physics of the H. Niewodniczanski Institute of Nuclear Physics in Cracow are given together with the lists of personnel, guests, conference papers, lectures, habilitations, ph.d. theses and publications. 45 refs. (A.S.)
Overview. Department of Theoretical Physics. Section 4
Energy Technology Data Exchange (ETDEWEB)
Kwiecinski, J. [Institute of Nuclear Physics, Cracow (Poland)
1995-12-31
Research activity of the Department of the Theoretical Physics spans a wide variety of problems in theoretical high-energy and elementary particle physics, theoretical nuclear physics, theory of the nuclear matter, quark gluon plasma and relativistic heavy-ion collisions, theoretical astrophysics, as well as general physics. Theoretical research in high energy and elementary particle physics is concentrated on the theory of deep inelastic lepton scattering in the region of low x and its phenomenological implication for the ep collider HERA at DESY, on the theory of nonleptonic decays of hadrons, and on low energy {pi}{pi} and K-anti-K interactions and scalar meson spectroscopy. The activity in the theory of relativistic heavy-ion collisions is focused on the study of quark condensate fluctuations, on the analysis of critical scattering near the chiral phase transition, and on Bose-Einstein correlation in heavy-ion collisions. Theoretical studies in nuclear physics and in theory of nuclear matter concern analysis of models, with dynamical symmetry based on group S{sub p}(6,R) for the description of collective modes of atomic nuclei, analysis of the Goldstone bosons in nuclear matter and analysis of saturation properties of nuclear matter. Research in theoretical astrophysics is mainly devoted to the analysis of magnetic properties of hadronic matter in neutron stars with proton admixture. Studies in general physics concern problem related to the Galilean covariance of classical and quantum mechanics. The detailed results obtained in various fields are summarised in presented abstracts as well as information about employed personnel, publications, contribution to conferences, reports, workshops and seminars.
[Experimental and theoretical high energy physics program
Energy Technology Data Exchange (ETDEWEB)
Finley, J.; Gaidos, J.A.; Loeffler, F.J.; McIlwain, R.L.; Miller, D.H.; Palfrey, T.R.; Shibata, E.I.; Shipsey, I.P.
1993-04-01
Experimental and theoretical high-energy physics research at Purdue is summarized in a number of reports. Subjects treated include the following: the CLEO experiment for the study of heavy flavor physics; gas microstrip detectors; particle astrophysics; affine Kac{endash}Moody algebra; nonperturbative mass bounds on scalar and fermion systems due to triviality and vacuum stability constraints; resonance neutrino oscillations; e{sup +}e{sup {minus}} collisions at CERN; {bar p}{endash}p collisions at FNAL; accelerator physics at Fermilab; development work for the SDC detector at SSC; TOPAZ; D-zero physics; physics beyond the standard model; and the Collider Detector at Fermilab. (RWR)
[Experimental and theoretical high energy physics program
International Nuclear Information System (INIS)
Finley, J.; Gaidos, J.A.; Loeffler, F.J.; McIlwain, R.L.; Miller, D.H.; Palfrey, T.R.; Shibata, E.I.; Shipsey, I.P.
1993-04-01
Experimental and theoretical high-energy physics research at Purdue is summarized in a number of reports. Subjects treated include the following: the CLEO experiment for the study of heavy flavor physics; gas microstrip detectors; particle astrophysics; affine Kac endash Moody algebra; nonperturbative mass bounds on scalar and fermion systems due to triviality and vacuum stability constraints; resonance neutrino oscillations; e + e - collisions at CERN; bar p endash p collisions at FNAL; accelerator physics at Fermilab; development work for the SDC detector at SSC; TOPAZ; D-zero physics; physics beyond the standard model; and the Collider Detector at Fermilab
Theoretical solid state physics, v.2
Haug, Albert
2013-01-01
Theoretical Solid State Physics, Volume 2 deals with the electron-lattice interaction and the effect of lattice imperfections. Conductivity, semiconductors, and luminescence are discussed, with emphasis on the basic physical problems and the various phenomena derived from them. The theoretical basis of interaction between electrons and lattices is considered, along with basic concepts of conduction theory, scattering of electrons by imperfections, and radiationless transitions. This volume is comprised of 19 chapters and begins with an overview of the coupling of electrons and the crystal latt
Theoretical and experimental high energy physics
International Nuclear Information System (INIS)
Gasiorowicz, S.; Ruddick, K.
1988-01-01
This report discusses experimental and theoretical work in High Energy Physics. Some topics discussed are: quantum field theory; supersymmetry; cosmology; superstring model; relic photinos; inflationary universe; dark matter; standard model; supernovae; semileptonic decay; quantum Langevin equation; underground neutrino detection at Soudan; strange quark systems; cosmic ray detection; superconducting super collider detectors; and studies of direct photon production
Riemann and Theoretical Physics 5 -6 ...
Indian Academy of Sciences (India)
Joseph Samuel is a theoretical physicist and by natural inclination a classical mechanic. Over the years he has strayed into other fields like optics, general relativity and very recently DNA elasticity. A unifying theme in his work is differential geometry and topology in physics. He keeps moderately fit by raising and lowering.
Science Academies' Refresher Course in Theoretical Physics
Indian Academy of Sciences (India)
Home; Journals; Resonance – Journal of Science Education; Volume 19; Issue 9. Science Academies' Refresher Course in Theoretical Physics. Information and Announcements Volume 19 Issue 9 September 2014 pp 875-875. Fulltext. Click here to view fulltext PDF. Permanent link:
Theoretical Studies in Elementary Particle Physics
Energy Technology Data Exchange (ETDEWEB)
Collins, John C.; Roiban, Radu S
2013-04-01
This final report summarizes work at Penn State University from June 1, 1990 to April 30, 2012. The work was in theoretical elementary particle physics. Many new results in perturbative QCD, in string theory, and in related areas were obtained, with a substantial impact on the experimental program.
Theoretical and experimental high energy physics
International Nuclear Information System (INIS)
Walsh, T.; Ruddick, K.
1990-01-01
This report discusses the following topics: The Soudan enterprise; study of strange quarks at Fermilab; direct photons at Fermilab; the Brookhaven programs; AMY and CLEO: studies of e + e - annihilations; cosmic ray studies with the DO muon chamber; progress report on HEP computer upgrade; muon triggering and reconstruction at SSC; and, theoretical high energy physics
RELATIVISTIC HEAVY ION PHYSICS: A THEORETICAL OVERVIEW.
Energy Technology Data Exchange (ETDEWEB)
KHARZEEV,D.
2004-03-28
This is a mini-review of recent theoretical work in the field of relativistic heavy ion physics. The following topics are discussed initial conditions and the Color Glass Condensate; approach to thermalization and the hydrodynamic evolution; hard probes and the properties of the Quark-Gluon Plasma. Some of the unsolved problems and potentially promising directions for future research are listed as well.
Experimental and theoretical high energy physics research
International Nuclear Information System (INIS)
1992-01-01
Progress in the various components of the UCLA High-Energy Physics Research program is summarized, including some representative figures and lists of resulting presentations and published papers. Principal efforts were directed at the following: (I) UCLA hadronization model, PEP4/9 e + e - analysis, bar P decay; (II) ICARUS and astroparticle physics (physics goals, technical progress on electronics, data acquisition, and detector performance, long baseline neutrino beam from CERN to the Gran Sasso and ICARUS, future ICARUS program, and WIMP experiment with xenon), B physics with hadron beams and colliders, high-energy collider physics, and the φ factory project; (III) theoretical high-energy physics; (IV) H dibaryon search, search for K L 0 → π 0 γγ and π 0 ν bar ν, and detector design and construction for the FNAL-KTeV project; (V) UCLA participation in the experiment CDF at Fermilab; and (VI) VLPC/scintillating fiber R ampersand D
A unified grand tour of theoretical physics
Lawrie, Ian D
2013-01-01
A Unified Grand Tour of Theoretical Physics invites its readers to a guided exploration of the theoretical ideas that shape our contemporary understanding of the physical world at the fundamental level. Its central themes, comprising space-time geometry and the general relativistic account of gravity, quantum field theory and the gauge theories of fundamental forces, and statistical mechanics and the theory of phase transitions, are developed in explicit mathematical detail, with an emphasis on conceptual understanding. Straightforward treatments of the standard models of particle physics and cosmology are supplemented with introductory accounts of more speculative theories, including supersymmetry and string theory. This third edition of the Tour includes a new chapter on quantum gravity, focusing on the approach known as Loop Quantum Gravity, while new sections provide extended discussions of topics that have become prominent in recent years, such as the Higgs boson, massive neutrinos, cosmological perturba...
Topics in modern physics theoretical foundations
Walecka, John Dirk
2013-01-01
While the two previous books entitled Introduction to Modern Physics: Theoretical Foundations and Advanced Modern Physics: Theoretical Foundations exposed the reader to the foundations and frontiers of today's physics, the goal of this third volume is to cover in some detail several topics omitted in the essentially linear progression of the first two. This book is divided into three parts. Part 1 is on quantum mechanics. Analytic solutions to the Schrödinger equation are developed for some basic systems. The analysis is then formalized, concluding with a set of postulates for the theory. Part 2 is on applications of quantum mechanics: approximation methods for bound states, scattering theory, time-dependent perturbation theory, and electromagnetic radiation and quantum electrodynamics. Part 3 covers some selected topics in relativistic quantum field theory: discrete symmetries, the Heisenberg picture, and the Feynman rules for quantum chromodynamics. The three volumes in this series taken together provide ...
Molecular physics. Theoretical principles and experimental methods
International Nuclear Information System (INIS)
Demtroeder, W.
2005-01-01
This advanced textbook comprehensively explains important principles of diatomic and polyatomic molecules and their spectra in two separate, distinct parts. The first part concentrates on the theoretical aspects of molecular physics, whereas the second part of the book covers experimental techniques, i.e. laser, Fourier, NMR, and ESR spectroscopies, used in the fields of physics, chemistry, biolog, and material science. Appropriate for undergraduate and graduate students in physics and chemistry with a knowledge of atomic physics and familiar with the basics of quantum mechanics. From the contents: - Electronic States of Molecules, - Rotation, Oscillation and Potential Curves of Diatomic Molecules, - The Spectra of Diatomic Molecules, - Molecule Symmetries and Group Theory, - Rotation and Oscillations of Polyatomic Molecules, - Electronic States of Polyatomic Molecules, - The Spectra of Polyatomic Molecules, - Collapse of the Born-Oppenheimer-Approximation, Disturbances in Molecular Spectra, - Molecules in Disturbing Fields, - Van-der-Waals-Molecules and Cluster, - Experimental Techniques in Molecular Physics. (orig.)
Theoretical physics 3. Quantum mechanics 1
International Nuclear Information System (INIS)
Dreizler, R.M.; Luedde, C.S.
2008-01-01
The basic course Theoretical Physics in 5 closed volumes is based on long standing approved courses, in which the preparation of the theoretically physical foundations are in closed form connected with the corresponding matter from mathematics. Interactive web-based problems in html with Applets help the studying in the deepening of the matter: 1 Theoretical Mechanics 2 Electrodynamics and Relativity Theory 3 Quantum Mechanics I 4 Quantum Mechanics II 5 Thermodynamics and Statistical Physics. In this volume the required foundations of quantum mechanics are worked out. Introducting themes are: Fundamental experiments on quantum mechanics, simple quantization methods, matter waves. With the establishment of the Schroedinger equation and the introduction of the operator calculus the way to the first fundamental iece, the discussion and the solution of the Schroedinger equation for one-particle systems is open. The examples discussed there serve as illustrating material for the elaboration of the formal representation theory of quantum mechanics. The theme regions round this introduction to quantum mechanics off: Perturbation theory, spin and angular-momentum questions, and a first view on many-particle problems by means of Coulomb systems like atoms, molecules, and solids [de
Research in theoretical nuclear physics: Progress report
International Nuclear Information System (INIS)
1988-08-01
In April 1988 we, along with the nuclear theory groups of Brookhaven and MIT, submitted a proposal to the Department of Energy for a national Institute of Theoretical Nuclear Physics. The primary areas of investigation proposed for this Institute are: Strong Interaction Physics--including (1) The physics of hadrons, (2) QCD and the nucleus, (3) QCD at finite temperatures and high density; nuclear astrophysics; nuclear structure and nuclear many-body theory; and nuclear tests of fundamental interactions. It is, of course, no coincidence that these are the main areas of activity of the three groups involved in this proposal and of our group in particular. Here, we will organize an outline of the progress made at Stony Brook during the past year along these lines. These four areas do not cover all of the activities of our group
Theoretical physics 6 quantum mechanics : basics
Nolting, Wolfgang
2017-01-01
This textbook offers a clear and comprehensive introduction to the basics of quantum mechanics, one of the core components of undergraduate physics courses. It follows on naturally from the previous volumes in this series, thus developing the physical understanding further on to quantized states. The first part of the book introduces wave equations while exploring the Schrödinger equation and the hydrogen atom. More complex themes are covered in the second part of the book, which describes the Dirac formulism of quantum mechanics. Ideally suited to undergraduate students with some grounding in classical mechanics and electrodynamics, the book is enhanced throughout with learning features such as boxed inserts and chapter summaries, with key mathematical derivations highlighted to aid understanding. The text is supported by numerous worked examples and end of chapter problem sets. About the Theoretical Physics series Translated from the renowned and highly successful German editions, the eight volumes of this...
Surface physics theoretical models and experimental methods
Mamonova, Marina V; Prudnikova, I A
2016-01-01
The demands of production, such as thin films in microelectronics, rely on consideration of factors influencing the interaction of dissimilar materials that make contact with their surfaces. Bond formation between surface layers of dissimilar condensed solids-termed adhesion-depends on the nature of the contacting bodies. Thus, it is necessary to determine the characteristics of adhesion interaction of different materials from both applied and fundamental perspectives of surface phenomena. Given the difficulty in obtaining reliable experimental values of the adhesion strength of coatings, the theoretical approach to determining adhesion characteristics becomes more important. Surface Physics: Theoretical Models and Experimental Methods presents straightforward and efficient approaches and methods developed by the authors that enable the calculation of surface and adhesion characteristics for a wide range of materials: metals, alloys, semiconductors, and complex compounds. The authors compare results from the ...
Studies in theoretical high energy particle physics
International Nuclear Information System (INIS)
Aratyn, H.; Brekke, L.; Keung, Wai-Yee; Sukhatme, U.
1993-01-01
Theoretical work on the following topics is briefly summarized: symmetry structure of conformal affine Toda model and KP hierarchy; solitons in the affine Toda and conformal affine Toda models; classical r-matrices and Poisson bracket structures on infinite-dimensional groups; R-matrix formulation of KP hierarchies and their gauge equivalence; statistics of particles and solitons; charge quantization in the presence of an Alice string; knotting and linking of nonabelian flux; electric dipole moments; neutrino physics in gauge theories; CP violation in the high energy colliders; supersymmetric quantum mechanics; parton structure functions in nuclei; dual parton model. 38 refs
The 1989 progress report: theoretical Physics
International Nuclear Information System (INIS)
Laval, G.
1989-01-01
The 1989 progress report of the laboratory of theoretical Physics of the Polytechnic School (France) is presented. The investigations reported concern the following subjects: the transport of a passive vector by a flow, the conformal field theories, the dynamics of wetting, the electromagnetic properties of composite materials, the neutrino oscillations, the heavy ion collision phenomenology, the laser-plasma interaction, the construction of a code for simulating the evolution of magnetohydrodynamic instabilities in plasmas. The published papers, the conferences and the Laboratory staff are listed [fr
Theoretical studies in elementary particle physics
International Nuclear Information System (INIS)
Collins, J.
1994-01-01
This is a report on research conducted at Penn State University under grant number DE-FG02-90ER-40577, from November 1992 to present. The author is a member of the CTEQ collaboration (Coordinated Theoretical and Experimental Project on Quantitative QCD). Some of the work in CTEQ is described in this report. Topics which the authors work has touched include: polarized hard scattering; hard diffraction; small x and perturbative pomeron physics; gauge-invariant operators; fundamental QCD; heavy quarks; instantons and deep inelastic scattering; non-perturbative corrections to τ decay
Theoretical and experimental studies of elementary physics
International Nuclear Information System (INIS)
Bodek, A.; Ferbel, T.; Melissinos, A.C.; Slattery, P.; Tipton, P.; Das, A.; Hagen, C.R.; Rajeev, S.G.; Okubo, S.; Orr, L.
1993-01-01
The various components of the high-energy physics research program at the University of Rochester are presented. (I)Fixed-target experimentation at FNAL includes studies of direct photon production by p and π on H, Be, and Cu, and hybrid mesons and other physics issues in Coulomb excitation at high energies. (II)The status of the GEM (Gammas, Electrons, and Muons) Experiment at the SSC is given. (III)The D-Zero experiment at FNAL is reviewed. (IV)Deep inelastic lepton--nucleon scattering experiments are summarized: electron scattering experiments at SLAC, FNAL neutrino quad triplet runs, FNAL neutrino sign selected experiments, and SDC cosmic ray test and test beam calibration. (V)Studies of nonlinear QED at SLAC concentrated on a study of QED at critical field strength in intense laser--high-energy electron collisions. (VI)Development work on the Collider Detector at Fermilab (CDF) emphasized the CDF silicon vertex detector, the end plug calorimeter, and the SDC tile/fiber calorimetry. (VII)The theoretical physics effort is sketched
Theoretical mechanics an introduction to mathematical physics
Sweetman Ames, Joseph
1958-01-01
In this book Professors Ames and Murnaghan undertake a mathematically rigorous development of theoretical mechanics from the point of view of modern physics. It gives an intensive survey of this basis field with extensive and extremely thorough discussions of vector and tensor methods, the displacement and motion of a rigid body, dynamics of inertial and non-inertial reference frames, dynamics of a particle, harmonic vibrations, nonrectilinear motion of a particle, central forces and universal gravitation, dynamics of a systems of material particle,impulsive forces, motion of a rigid body about a fixed point, gyroscopic and barygyroscopic theory, general dynamical theorems, vibrations about a point of equilibrium, the principle of least action, holonomic and nonholonomic systems, the principle of least constraint, general methods of integration and the three body problem, the potential function (including simple-layer and double-layer potentials), wave motion, the Lorentz-Einstein transformation and an illumi...
Experimental and theoretical high energy physics research
International Nuclear Information System (INIS)
Cline, D.B.
1993-01-01
Progress on seven tasks is reported. (I)UCLA hadronization model, antiproton decay, PEP4/9 e + e - analysis: In addition to these topics, work on CP and CPT phenomenology at a φ factory and letters of support on the hadronization project are included. (II)ICARUS detector and rare B decays with hadron beams and colliders: Developments are summarized and some typcial events as shown; in addition, the RD5 collaboration at CERN and the asymmetric φ factory project are sketched. (III)Theoretical physics: Feynman diagram calculations in gauge theory; supersymmetric standard model; effects of quantum gravity in breaking of global symmetries; models of quark and lepton substructure; renormalized field theory; large-scale structure in the universe and particle-astrophysics/early universe cosmology. (IV)H dibaryon search at BNL, kaon experiments (E799/KTeV) at Fermilab: Project design and some scatterplots are given. (V)UCLA participation in the experiment CDF at Fermilab. (VI)Detectors for hadron physics at ultrahigh energy colliders: Scintillating fiber and visible light photon counter research. (VII)Administrative support and conference organization
A unified grand tour of theoretical physics
Griffiths, J
2002-01-01
Anyone offering a grand tour is faced with several options. Should they concentrate on what may be considered to be essential features, or should they attempt to present a brief glimpse of almost everything? The present offering is a compromise between these two extremes. The area considered - theoretical physics - is now such a vast subject that some kind of compromise is essential. Indeed, the field is now so wide that few could even attempt to review it in a single-authored work. My task here is to assess how well this book has succeeded in its main aim of providing a unified (though introductory) tour of this subject. Constrained within a single volume, this is clearly not an updated Landau-Lifschitz. It cannot be expected to take any particular topic to the level of recent research. Nevertheless, it does seem to cover the broad range of essential topics which now constitute the subject. It starts (most appropriately in my opinion) with geometry. It then covers classical physics, general relativity and qu...
Theoretical study of free electron laser physics
Energy Technology Data Exchange (ETDEWEB)
Yoo, Jae Gwon; Cho, Sung Oh; Jeong, Young Uk; Kim, Sun Kook; Lee, Byung Cheol; Cha, Byung Heon; Lee, Jong Min [Korea Atomic Energy Research Institute, Taejeon (Korea)
2000-04-01
A theoretical study of free electron laser physics is presented in this report. In particular, an analysis is given of the free electron laser with a linearly polarized magnetic wiggler. We describe the basic electron dynamics and gain mechanism in a free electron laser by solving the one-body classical Lorentz force equations in the presence of a periodic magnetic field and a plane electromagnetic wave. Phase space paths for electrons analogously related to those of a simple pendulum are used to describe the laser gain and saturation, and the evolution of the electron beam energy and position distributions. We present an analysis of the single-mode problem and a self-consistent nonlinear treatment of the finite transverse dimensional effects associated with the free electron laser in a steady state. Results computed by applying an external D.C. electric field to the system are discussed for investigating efficiency enhancement of the free electron lasers. Finally optical guiding effect in small signal regime is described to investigate the possibility of amplifying radiation fields in very long wigglers for large gain and high extraction efficiency. 14 refs., 45 figs. (Author)
Frontiers in Theoretical and Applied Physics
2017-01-01
The aim of the conference is to provide a forum for physicists, astronomers, and space and material scientists from around the world to present the latest developments in the various dynamic fields of physics. Atomic, Molecular and Optical Physics, Condensed Matter Physics, Material Science and Nanophysics, Nuclear and High Energy Physics, Mathematical Physics, Astrophysics, Space and Planetary Physics
Energy and Entropy as the Fundaments of Theoretical Physics
Directory of Open Access Journals (Sweden)
Pharis E. Williams
2002-05-01
Full Text Available Einstein's article titled, "The Fundaments of Theoretical Physics", from Science, Washington, D.C., May 24, 1940, is presented in its entirety as it is an outstanding presentation of the history and status of the foundations of theoretical physics as it stood in 1940. Further, it provides the background for discussing the new view of the fundaments of theoretical physics provided by the energy and entropy foundation of the Dynamic Theory.
Nordita. Nordic Institute for Theoretical Physics
International Nuclear Information System (INIS)
1991-01-01
This report covers the period from January 1st to December 31st, 1990. The purpose of Nordita is to encourage scientific collaboration between the Nordic countries within scientific and basic nuclear physics. The scientific programme at Nordita covers astrophysics, elementary particle physics, solid state physics and nuclear physics. The scientific work is published or otherwise made public. (author)
Physics Without Physics. The Power of Information-theoretical Principles
D'Ariano, Giacomo Mauro
2017-01-01
David Finkelstein was very fond of the new information-theoretic paradigm of physics advocated by John Archibald Wheeler and Richard Feynman. Only recently, however, the paradigm has concretely shown its full power, with the derivation of quantum theory (Chiribella et al., Phys. Rev. A 84:012311, 2011; D'Ariano et al., 2017) and of free quantum field theory (D'Ariano and Perinotti, Phys. Rev. A 90:062106, 2014; Bisio et al., Phys. Rev. A 88:032301, 2013; Bisio et al., Ann. Phys. 354:244, 2015; Bisio et al., Ann. Phys. 368:177, 2016) from informational principles. The paradigm has opened for the first time the possibility of avoiding physical primitives in the axioms of the physical theory, allowing a re-foundation of the whole physics over logically solid grounds. In addition to such methodological value, the new information-theoretic derivation of quantum field theory is particularly interesting for establishing a theoretical framework for quantum gravity, with the idea of obtaining gravity itself as emergent from the quantum information processing, as also suggested by the role played by information in the holographic principle (Susskind, J. Math. Phys. 36:6377, 1995; Bousso, Rev. Mod. Phys. 74:825, 2002). In this paper I review how free quantum field theory is derived without using mechanical primitives, including space-time, special relativity, Hamiltonians, and quantization rules. The theory is simply provided by the simplest quantum algorithm encompassing a countable set of quantum systems whose network of interactions satisfies the three following simple principles: homogeneity, locality, and isotropy. The inherent discrete nature of the informational derivation leads to an extension of quantum field theory in terms of a quantum cellular automata and quantum walks. A simple heuristic argument sets the scale to the Planck one, and the currently observed regime where discreteness is not visible is the so-called "relativistic regime" of small wavevectors, which
Research in theoretical physics. Final report
International Nuclear Information System (INIS)
Domokos, G.; Kovesi-Domokos, S.
1998-06-01
This report summarizes the research carried out under Grant DE-FG02-85ER40211. The main topics covered are: astroparticle physics at very high and ultrahigh energies; search for new physics by means of detectors of ultrahigh energy particles of extraterrestrial origin. Methods for searching in heavy quark decays for signatures of physics beyond the standard model are developed
Nordita. Nordic Institute for Theoretical Physics. Annual report 1993
International Nuclear Information System (INIS)
1994-01-01
This report covers the period from January 1st to December 31st, 1993. The purpose of Nordita is to encourage scientific collaboration between the Nordic countries within basic theoretical physics. The scientific programme at Nordita covers astrophysics, elementary particle physics, solid state physics and nuclear physics. The scientific work is published or otherwise made public. (author)
Some theoretical issues in heavy flavour physics
Indian Academy of Sciences (India)
Some of the recent developments in heavy flavour physics will be reviewed. This will include an update on some of the Standard Model predictions, and a summary of recent measurements that may indicate the presence of new physics (NP). The focus will be on selected models of NP that are indicated by the anomalies in ...
Research in theoretical physics. Final report
International Nuclear Information System (INIS)
Frampton, P.H.; Choi, S.I.; Ng, Y.J.; Manire, G.P.; vanDam, H.
1986-01-01
Results are reported briefly in these theoretical areas: higher-dimensional anomalies, spontaneous compactification, supersymmetric confining models of the weak interactions, spacetime thermodynamics and the inflationary universe, spin-dependent forces in the quarkonium systems, scalar-quark bound states, construction of a self-interacting massless spin 3 theory, relativistic corrections in quarkonium, scalar quarkonium production supergravity and unified theories, supersymmetric unified theories and hierarchy problems, and family unification in higher dimensions
Main directions of Research Institute of Experimental and Theoretic Physics
International Nuclear Information System (INIS)
Tazhibaeva, I.L.
1997-01-01
The characteristic of main directions of the Research Institute of Experimental and Theoretic Physics (RIETF) activity is given in the paper. It is noted, that Institute is headquarters organisation in 4 following scientific programs of Ministry of Science - Academy of Science of Republic of Kazakhstan: Physics and mechanics of gases, plasma and liquid; Theoretical physics; Nonlinear processes and structural self-organization of substance; Research works Comet. Since 1994 RIETF is one of executors on interstate scientific program ITER. There are following priorities in activity of the institute: - actual problems of relativity theory, gravitation and quantum mechanics; - research on combustion problems and heat-mass-transfer; - physics of gases, plasma and liquid; physics non-equilibrium processes in plasma an in plasma-similar media; - solid state physics and material testing problems; modification of materials properties; electrophysical, optical and structural researches of substance; - interactions of nuclear, electromagnet radiation and accelerated particles with substance; - theoretical and experimental nuclear physics and physics of cosmic rays
Theoretical study of nuclear physics with strangeness at Nankai University
International Nuclear Information System (INIS)
Ning Pingzhi
2007-01-01
Theoretical study of nuclear physics with strangeness from the nuclear physics group at Nankai university is briefly introduced. Theoretical calculations on hyperon mean free paths in nuclear medium have been done. The other 4 topics in the area of strangeness nuclear physics are the effect of different baryon impurities in nucleus, the heavy flavored baryon hypernuclei, the eta-mesons in nuclear matter and the properties of kaonic nuclei. (authors)
Theoretical physics: Quarks fuse to release energy
Miller, Gerald A.
2017-11-01
In nuclear fusion, energy is produced by the rearrangement of protons and neutrons. The discovery of an analogue of this process involving particles called quarks has implications for both nuclear and particle physics. See Letter p.89
Topics in statistical and theoretical physics
Dobrushin, R L; Shubin, M A
1996-01-01
This is the second of two volumes dedicated to the scientific heritage of F. A. Berezin (1931-1980). Before his untimely death, Berezin had an important influence on physics and mathematics, discovering new ideas in mathematical physics, representation theory, analysis, geometry, and other areas of mathematics. His crowning achievements were the introduction of a new notion of deformation quantization and Grassmannian analysis ("supermathematics"). Collected here are papers by many of his colleagues and others who worked in related areas, representing a wide spectrum of topics in statistical a
Annual progress report for 1985 of Theoretical Physics Division
International Nuclear Information System (INIS)
Rastogi, B.P.
1986-01-01
This report presents a resume of the work done in the Theoretical Physics Division during the calender year, 1985. The topics covered are described by their brief summaries. The main fields of the work were : (a) physics design of the 500 MWe PHWR and related developmental studies, (b) reactor physics work related to Rajasthan, Narora and Tarapur stations, (c) laser fusion studies, (d) mathematical physics studies on Monte-Carlo method, transport equation and Fokker-Planck Equation and (e) theoretical physics studies related to Feynman path integrals and quantum optics. The lists of research publications and Trombay Colloquia organised are also appended. (author)
Gender and Physics: a Theoretical Analysis
Rolin, Kristina
This article argues that the objections raised by Koertge (1998), Gross and Levitt (1994), and Weinberg (1996) against feminist scholarship on gender and physics are unwarranted. The objections are that feminist science studies perpetuate gender stereotypes, are irrelevant to the content of physics, or promote epistemic relativism. In the first part of this article I argue that the concept of gender, as it has been developed in feminist theory, is a key to understanding why the first objection is misguided. Instead of reinforcing gender stereotypes, feminist science studies scholars can formulate empirically testable hypotheses regarding local and contested beliefs about gender. In the second part of this article I argue that a social analysis of scientific knowledge is a key to understanding why the second and the third objections are misguided. The concept of gender is relevant for understanding the social practice of physics, and the social practice of physics can be of epistemic importance. Instead of advancing epistemic relativism, feminist science studies scholars can make important contributions to a subfield of philosophy called social epistemology.
Science Academies' Refresher Course in Theoretical Physics
Indian Academy of Sciences (India)
IAS Admin
2013-09-30
Sep 30, 2013 ... ... Deshamukhya, Department of Physics, Assam University, Silchar 788 004. For any further query, please Email to: RCAUS2013@gmail.com. Selected participants will be provided local hospitality. Outstation participants will be reim- bursed round trip 3-tier train fare (shortest route) from place of residence.
Riemann and Theoretical Physics 5 -6 ...
Indian Academy of Sciences (India)
to physics. Plane geOlnetry has bcen studied since the ancient Greeks. The subject \\vas consolidated in Euclid's Elernents, which put down the lnain ideas in axionHl.tic fonn. Genera- tions of lllathellmticians ... Riemann's definition of curvature has ... ready clear from special relativity that space-time in the absence of gravity ...
Refresher Course in Theoretical Physics at St. Stephen's College ...
Indian Academy of Sciences (India)
Home; Journals; Resonance – Journal of Science Education; Volume 7; Issue 5. Refresher Course in Theoretical Physics at St. Stephen's College University of Delhi, Delhi. Information and Announcements Volume 7 Issue 5 May 2002 pp 103-103 ...
Sleeping beauties in theoretical physics 26 surprising insights
Padmanabhan, Thanu
2015-01-01
This book addresses a fascinating set of questions in theoretical physics which will both entertain and enlighten all students, teachers and researchers and other physics aficionados. These range from Newtonian mechanics to quantum field theory and cover several puzzling issues that do not appear in standard textbooks. Some topics cover conceptual conundrums, the solutions to which lead to surprising insights; some correct popular misconceptions in the textbook discussion of certain topics; others illustrate deep connections between apparently unconnected domains of theoretical physics; and a few provide remarkably simple derivations of results which are not often appreciated. The connoisseur of theoretical physics will enjoy a feast of pleasant surprises skilfully prepared by an internationally acclaimed theoretical physicist. Each topic is introduced with proper background discussion and special effort is taken to make the discussion self-contained, clear and comprehensible to anyone with an undergraduate e...
Final Report. Research in Theoretical High Energy Physics
Energy Technology Data Exchange (ETDEWEB)
Greensite, Jeffrey P. [San Francisco State Univ., CA (United States); Golterman, Maarten F.L. [San Francisco State Univ., CA (United States)
2015-04-30
Grant-supported research in theoretical high-energy physics, conducted in the period 1992-2015 is briefly described, and a full listing of published articles result from those research activities is supplied.
Theoretical and Experimental Studies in Accelerator Physics
Energy Technology Data Exchange (ETDEWEB)
Rosenzweig, James [Univ. of California, Los Angeles, CA (United States). Dept. of Physics and Astronomy
2017-03-08
This report describes research supported by the US Dept. of Energy Office of High Energy Physics (OHEP), performed by the UCLA Particle Beam Physics Laboratory (PBPL). The UCLA PBPL has, over the last two decades-plus, played a critical role in the development of advanced accelerators, fundamental beam physics, and new applications enabled by these thrusts, such as new types of accelerator-based light sources. As the PBPL mission is broad it is natural that it has been grown within the context of the accelerator science and technology stewardship of the OHEP. Indeed, steady OHEP support for the program has always been central to the success of the PBPL; it has provided stability, and above all has set the over-arching themes for our research directions, which have producing over 500 publications (>120 in high level journals). While other agency support has grown notably in recent years, permitting more vigorous pursuit of the program, it is transient by comparison. Beyond permitting program growth in a time of flat OHEP budgets, the influence of other agency missions is found in push to adapt advanced accelerator methods to applications, in light of the success the field has had in proof-of-principle experiments supported first by the DoE OHEP. This three-pronged PBPL program — advanced accelerators, fundamental beam physics and technology, and revolutionary applications — has produced a generation of students that have had a profound affect on the US accelerator physics community. PBPL graduates, numbering 28 in total, form a significant population group in the accelerator community, playing key roles as university faculty, scientific leaders in national labs (two have been named Panofsky Fellows at SLAC), and vigorous proponents of industrial application of accelerators. Indeed, the development of advanced RF, optical and magnet technology at the PBPL has led directly to the spin-off company, RadiaBeam Technologies, now a leading industrial accelerator firm
International Centre for Theoretical Physics, Trieste. Scientific activities in 1993
International Nuclear Information System (INIS)
1994-10-01
The annual report of the International Centre for Theoretical Physics from Trieste for 1993 contains four parts. Part I gives statistical data on the main activities of the Centre. Part II presents the scientific programme structured as follows: Fundamental physics, Condensed matter physics, Mathematics, Physics and energy, Physics and environment, Physics of the living state, Applied physics, Adriatico Research Conferences, Diploma Course, Laboratories, Long-term visitors, Network of Associate Members and Federal Institutes, Training and research at italian laboratories, External Activities, Science, High Technology and Development Programme, Meeting hosted, Awards. Part III lists the publications issued in 1993. Part IV presents the scientific support services. Tabs
Gauge concepts in theoretical applied physics
Tan, Seng Ghee; Jalil, Mansoor B. A.
2016-01-01
Gauge concept evolves in the course of nearly one century from Faraday’s rather obscure electrotonic state of matter to the physically significant Yang-Mills that underpin today’s standard model. As gauge theories improve, links are established with modern observations, e.g. in the Aharonov-Bohm effect, the Pancharatnam-Berry’s phase, superconductivity, and quantum Hall effects. In this century, emergent gauge theory is formulated in numerous fields of applied physics like topological insulators, spintronics, and graphene. We will show in this paper the application of gauge theory in two particularly useful spin-based phenomena, namely the spin orbit spin torque and the spin Hall effect. These are important fields of study in the engineering community due to great commercial interest in the technology of magnetic memory (MRAM), and magnetic field sensors. Both spin orbit torque and spin Hall perform magnetic switching at low power and high speed. Furthermore, spin Hall is also a promising source of pure spin current, as well as a reliable form of detection mechanism for the magnetic state of a material.
Theoretical and experimental studies of elementary physics
Energy Technology Data Exchange (ETDEWEB)
Bodek, A.; Ferbel, T.; Melissinos, A.C.; Olsen, S.; Slattery, P.; Tipton, P.; Das, A.; Hagen, C.R.; Rajeev, S.G.; Okubo, S.
1992-04-30
The experimental high energy physics program is directed toward the execution of experiments that probe the basic constituents of matter and the forces between them. These experiments are carried out at national and international accelerator facilities. At the current time, we are primarily concentrating on the following projects: Direct photon production in hadronic reactions (Fermilab E706); Production of hybrid mesons in the nuclear Coulomb field; The D-Zero experiment at the Tevatron collider; Deep inelastic neutrino- and electron-nucleon scattering at FNAL and SLAC; Nonlinear QED at critical field strengths at SLAC; The Experiments at KEK (AMY, 17keV neutrino); The CDF experiment at the Tevatron collider; and SSC-related detector R D on scintillating tile- and diamond-based calorimetry and microstrip tracking detectors.
Theoretical physics 4 special theory of relativity
Nolting, Wolfgang
2017-01-01
This concise textbook offers a clear and comprehensive introduction to special relativity, one of the core components of undergraduate physics courses. It follows on naturally from the previous volumes in this series, thus developing the relativistic expansion of classical mechanics and electrodynamics. The first part of the book introduces Lorentz transformations, time dilation, length contraction and Minkowski diagrams. More complex themes are covered in the second part of the book, which describes the four-dimensional covariant formulation for classical mechanics and electrodynamics, including discussion of Maxwell’s equations, the Lorentz force and the covariant Lagrangian formulation. Ideally suited to undergraduate students with some grounding in classical mechanics and electrodynamics, the book is enhanced throughout with learning features such as boxed inserts and chapter summaries, with key mathematical derivations highlighted to aid understanding. The text is supported by numerous worked examples ...
Theoretical and experimental studies of elementary physics
International Nuclear Information System (INIS)
Bodek, A.; Ferbel, T.; Melissinos, A.C.; Olsen, S.; Slattery, P.; Tipton, P.; Das, A.; Hagen, C.R.; Rajeev, S.G.; Okubo, S.
1992-01-01
The experimental high energy physics program is directed toward the execution of experiments that probe the basic constituents of matter and the forces between them. These experiments are carried out at national and international accelerator facilities. At the current time, we are primarily concentrating on the following projects: Direct photon production in hadronic reactions (Fermilab E706); Production of hybrid mesons in the nuclear Coulomb field; The D-Zero experiment at the Tevatron collider; Deep inelastic neutrino- and electron-nucleon scattering at FNAL and SLAC; Nonlinear QED at critical field strengths at SLAC; The Experiments at KEK (AMY, 17keV neutrino); The CDF experiment at the Tevatron collider; and SSC-related detector R ampersand D on scintillating tile- and diamond-based calorimetry and microstrip tracking detectors
Information and statistics: a new paradigm in theoretical nuclear physics
International Nuclear Information System (INIS)
Piekarewicz, J; Chen, Wei-Chia; Fattoyev, F J
2015-01-01
Theoretical predictions of physical observables often involve extrapolations to regions that are poorly constrained by laboratory experiments and astrophysical observations. Without properly quantified theoretical errors, such model predictions are of very limited utility. In this contribution we use maximum-likelihood estimation to compute theoretical errors and assess correlations between physical observables. We illustrate the power and elegance of these methods using examples of both pedagogical and realistic interest. In particular, we implement a Gaussian approximation to the likelihood function to develop a new relativistic effective interaction constrained by ground-state properties of finite nuclei, their monopole response, and masses of neutron stars. (paper)
Controlled nuclear fusion. Theoretical and technical-physical aspects
International Nuclear Information System (INIS)
Donne, T.; Oomens, N.
1995-01-01
It is stated that the realization of controlled fusion is not only a matter of solving technical problems. Also theoretical research in the field of plasma physics is required. A brief state-of-the-art is given of theoretical and technical-physical aspects of nuclear fusion. Attention is paid to magnetic confinement, the importance of theoretical research, plasma heating, plasma diagnostics, and the control of plasma transport. Throughout the article special attention is paid to the International Thermonuclear Experimental Reactor (ITER) project. 5 figs., 1 tab., 3 refs
41st Vietnam National Conference on Theoretical Physics
International Nuclear Information System (INIS)
2017-01-01
Preface The 41 st Vietnam National Conference on Theoretical Physics (NCTP-41) was held during 1-4 August 2016 in Nha Trang, Vietnam. The NCTP-41 was organized by the Institute of Physics, Vietnam Academy of Science and Technology (IOP-VAST) under the support of the Vietnamese Theoretical Physics Society (VTPS). This meeting belongs to a series of annual theoretical physics conferences that started in 1976. The conference has covered a wide range of theoretical physics topics from 4 major fields: • Particle, nuclear and astro- physics, • Molecular physics, quantum optics and quantum computation, • Condensed matter physics, • Soft matter, biological and interdisciplinary physics. 115 participants have participated in the conference. 2 invited talks, 22 oral and 75 poster contributions were presented. This volume contains selected papers contributed by the participants. Editors of the NCTP-41 Proceedings Trinh Xuan Hoang, Hoang Anh Tuan and Vu Ngoc Tuoc Information about Organizer, Sponsor, Honorary Chair and Chair and also lists of committees and participants are available in the PDF (paper)
[Experimental and theoretical high energy physics
International Nuclear Information System (INIS)
Boulware, D.
1988-01-01
We are carrying out a research program in high energy experimental particle physics. Studies of high energy hadronic interactions and leptoproduction processes continue using several experimental techniques. Progress has been made on the study of multiparticle production processes in nuclei. Ultra-high energy cosmic ray nucleus-nucleus interactions have been investigated by the Japanese American Cosmic Emulsion Experiment (JACEE) using balloon-borne emulsion chamber detectors. In the area of particle astrophysics, our studies of cosmic ray nuclear interactions have enabled us to make the world's most accurate determination of the composition of the cosmic rays above 10 13 eV. We have the only detector that can observe interaction vertices and identify particles at energies up to 10--15 eV. Our observations are getting close to placing limits on the acceleration mechanisms postulated for pulsars in which the spin and magnetic moment axes are at different angles. In June, 1989 approval was given by NASA for our participation in the Space Station program. The SCINATT experiment will make use of emulsion chamber detectors, similar to the planned JACEE hybrid balloon flight detectors. These detectors will permit precise determination of secondary particle charges, momenta and rapidities, and the accumulation of data will be at least a factor of 10 to 100 greater than in balloon experiments. Emulsion chamber techniques are also employed in an experiment using accelerator heavy ion beams at CERN and Brookhaven National Laboratory to investigate particle production processes in central collisions of nuclei in the energy range 15--200A GeV. Our study of hadroproduction in lepton interactions is continuing with approval of another 8 months run for deep inelastic muon scattering experiment E665 at Fermilab
Theoretical studies in hadronic and nuclear physics
International Nuclear Information System (INIS)
Griffin, J.J.; Cohen, T.D.
1993-07-01
Research in the Maryland Nuclear Theory Group focusses on problems in four basic areas of current relevance. The section on Hadrons in Nuclei reports research into the ways in which the properties of nucleons and the mesons which play a role in the nuclear force are modified in the nuclear medium. QCD sum rules supply a new insight into the decrease of the nucleon's mass in the nuclear medium. The quark condensate decreases in nuclear matter, and this is responsible for the decrease of the nucleon's mass. The section on the Structure of Hadrons reports progress in understanding the structure of the nucleon. These results cover widely different approaches -- lattice gauge calculations, QCD sum rules, quark-meson models with confinement and other hedgehog models. Progress in Relativistic Nuclear Physics is reported on electromagnetic interactions in a relativistic bound state formalism, with applications to elastic electron scattering by deuterium, and on application of a two-body quasipotential equation to calculate the spectrum of mesons formed as bound states of a quark and antiquark. A Lorentz-invariant description of the nuclear force suggests a decrease of the nucleon's mass in the nuclear medium similar to that found from QCD sum rules. Calculations of three-body bound states with simple forms of relativistic dynamics are also discussed. The section on Heavy Ion Dynamics and Related Processes describes progress on the (e + e - ) problem and heavy-on dynamics. In particular, the sharp electrons observed in β + irradiation of heavy atoms have recently been subsumed into the ''Composite Particle Scenario,'' generalizing the ''(e + e - -Puzzle'' of the pairs from heavy ion collisions to the ''Sharp Lepton Problem.''
Higgs physics at future colliders: Recent theoretical developments
Indian Academy of Sciences (India)
journal of. February 2004 physics pp. 191-206. Higgs physics at future colliders: Recent theoretical developments. ABDELHAK DJOUADI. Theory Division, CERN ... the Higgs particles, not only the dominant and widely studied ones allowing for clear .... For very large masses, the Higgs becomes obese, since ΓА ~ MА,.
Annual progress report for 1983 of Theoretical Physics Division
International Nuclear Information System (INIS)
Rastogi, B.P.; Menon, S.V.G.
1984-01-01
A resume of the work done in the Theoretical Physics Division of the Bhadha Atomic Research Centre, Bombay, during the calendar year 1983 is reported in the form of individual summaries. The main thrust of the work has been in the field of particle transport theory, reactor physics and reactor safety. (M.G.B)
Annual progress report for 1984 of Theoretical Physics Division
International Nuclear Information System (INIS)
Rastogi, B.P.; Menon, S.V.G.; Jain, R.P.
1985-01-01
This report presents a resume of the work done in the Theoretical Physics Division of the Bhabha Atomic Research Centre, Bombay, during the calendar year 1984. The report is divided into two parts, namely, Nuclear Technology and Mathematical Physics. The topics covered are described by brief summaries. A list of research publications and papers presented in symposia/workshops is also included. (author)
The Future of Theoretical Physics and Cosmology
Gibbons, G. W.; Shellard, E. P. S.; Rankin, S. J.
2009-08-01
Preface; List of contributors; 1. Introduction; Part I. Popular Symposium: 2. Our complex cosmos and its future Martin J. Rees; 3. Theories of everything and Hawking's wave function of the Universe James B. Hartle; 4. The problem of space-time singularities: implications for quantum gravity? Roger Penrose; 5. Warping spacetime Kip Thorne; 6. 60 years in a nutshell Stephen W. Hawking; Part II. Spacetime Singularities: 7. Cosmological perturbations and singularities George F. R. Ellis; 8. The quantum physics of chronology protection Matt Visser; 9. Energy dominance and the Hawking-Ellis vacuum conservation theorem Brandon Carter; 10. On the instability of extra space dimensions Roger Penrose; Part III. Black Holes: 11. Black hole uniqueness and the inner horizon stability problem Werner Israel; 12. Black holes in the real universe and their prospects as probes of relativistic gravity Martin J. Rees; 13. Primordial black holes Bernard Carr; 14. Black hole pair creation Simon F. Ross; 15. Black holes as accelerators Steven Giddings; Part IV. Hawking Radiation: 16. Black holes and string theory Malcolm Perry; 17. M theory and black hole quantum mechanics Joe Polchinski; 18. Playing with black strings Gary Horowitz; 19. Twenty years of debate with Stephen Leonard Susskind; Part V. Quantum Gravity: 20. Euclidean quantum gravity: the view from 2002 Gary Gibbons; 21. Zeta functions, anomalies and stable branes Ian Moss; 22. Some reflections on the status of conventional quantum theory when applied to quantum gravity Chris Isham; 23. Quantum geometry and its ramifications Abhay Ashtekar; 24. Topology change in quantum gravity Fay Dowker; Part VI. M Theory and Beyond: 25. The past and future of string theory Edward Witten; 26. String theory David Gross; 27. A brief description of string theory Michael Green; 28. The story of M Paul Townsend; 29. Gauged supergravity and holographic field theory Nick Warner; 30. 57 varieties in a NUTshell Chris Pope; Part VII. de Sitter Space
Matvei Petrovich Bronstein and Soviet theoretical physics in the thirties
Gorelik, Gennady E
1994-01-01
Gennady E. Gorelik and Victor Ya. Frenkel Matvei Petrovich Bronstein and Soviet Theoretical Physics in the Thirties Translated by Valentina M. Levina The short life and tragic death of Matvei Petrovich Bronstein (1906-1938) may be seen as a symbol of the man's time and his country. One of the most remarkable features of Soviet history was the impressive advance of its physical sciences against the brutal and violent background of totalitarianism. Soviet advances in nuclear and space technology form an important part of world history. These achievements had their roots in the 1930s, when Bronstein's generation entered science. Among his friends were the famous physicists Lev Landau and George Gamow. Bronstein worked in the vast field of theoretical physics, ranging from nuclear physics to astrophysics and from relativistic quantum theory to cosmology. His pioneering work on quantizing gravitation goes beyond the history of physics, because today the quantum theory of gravitation occupies a special place in fun...
Mathematica for Theoretical Physics Classical Mechanics and Nonlinear Dynamics
Baumann, Gerd
2005-01-01
Mathematica for Theoretical Physics: Classical Mechanics and Nonlinear Dynamics This second edition of Baumann's Mathematica® in Theoretical Physics shows readers how to solve physical problems and deal with their underlying theoretical concepts while using Mathematica® to derive numeric and symbolic solutions. Each example and calculation can be evaluated by the reader, and the reader can change the example calculations and adopt the given code to related or similar problems. The second edition has been completely revised and expanded into two volumes: The first volume covers classical mechanics and nonlinear dynamics. Both topics are the basis of a regular mechanics course. The second volume covers electrodynamics, quantum mechanics, relativity, and fractals and fractional calculus. New examples have been added and the representation has been reworked to provide a more interactive problem-solving presentation. This book can be used as a textbook or as a reference work, by students and researchers alike. A...
3rd Joint Dutch-Brazil School on Theoretical Physics
2015-01-01
The Joint Dutch-Brazil School on Theoretical Physics is now in its third edition with previous schools in 2007 and 2011. This edition of the school will feature minicourses by Nima Arkani-Hamed (IAS Princeton), Jan de Boer (University of Amsterdam) and Cumrun Vafa (Harvard University), as well as student presentations. The school is jointly organized with the Dutch Research School of Theoretical Physics (DRSTP) and is intended for graduate students and researchers in the field of high-energy theoretical physics. There is no registration fee and limited funds are available for local and travel support of participants. This school in São Paulo will be preceded by the XVIII J. A. Swieca School in Campos de Jordão.
The beautiful invisible creativity, imagination, and theoretical physics
Vignale, Giovanni
2011-01-01
Challenging the image of theoretical physics as a dry discipline, The Beautiful Invisible shows that this highly abstract science is in fact teeming with beautiful concepts, and the task of imagining them demands profound creativity, just as creative as the work of poets or magical realist novelists such as Borges and Musil. "A good scientific theory is like a symbolic tale, an allegory of reality," writes Giovanni Vignale, as he uncovers the unexpected links between theoretical physics and artistic creativity. In engaging and at times poetic prose, and with ample quotations from many of the writers he admires, Vignale presents his own unorthodox accounts of fundamental theoretical concepts such as Newtonian mechanics, superconductivity, and Einstein's theory of relativity, illuminating their profound implications. Throughout, the author treats readers to glimpses of physics as "exercised in the still night, when only the moon rages." Indeed, as we delve behind now-familiar concepts such as "electron spin" an...
High energy physics: Experimental, theoretical and phenomenology institute
International Nuclear Information System (INIS)
Barger, V.; Camerini, U.; Carlsmith, D.; Durand, B.; Durand, L.; Erwin, A.; Fry, W.; Goebel, C.; Halzen, F.; Loveless, R.; March, R.; Morse, R.; Olsson, M.; Pondrom, L.; Prepost, R.; Reeder, D.; Sheaff, M.; Smith, W.; Thompson, M.; Wu, S.L.
1991-01-01
This report discusses research in the following task: hadron physics at Fermilab; Lepton hadron scattering; electromagnetic ampersand weak interactions at the Stanford Linear Accelerator Center - SLAC; hyperon beam program - hadroproduction of heavy beam flavors at Fermilab; ultra high energy colliding beam physics; Institute for high energy physics phenomenology; weak ampersand electromagnetic interactions using PETRA at DESY ampersand LEP at CERN; theoretical high energy physics; DUMAND; study of ultra high energy gamma rays; data analysis facility; and R ampersand D for major subsystems for the SSC detectors
International Centre for Theoretical Physics, Trieste. Scientific activities in 1995
International Nuclear Information System (INIS)
1996-10-01
The annual report of the International Centre for Theoretical Physics from Trieste for 1995 contains three parts. Part 1 includes statistical data on the main activities of the Centre. Part 2 presents the scientific programme in various fields (Physics of Condensed Matter, Physics of High and Intermediate Energies, Mathematics, Physics and Energy, Physics of the Environment, Physics of Living State, Applied Physics and Miscellaneous) as well as other activities such as diploma course, long-term scientific visitors, associate members and federation arrangements, training and research at Italian laboratories, external activities, books and equipment donation programme, awards, and meetings hosted. Part 3 lists the publications issued in 1995 and gives information about the library of the Centre. 6 tabs
International Centre for Theoretical Physics, Trieste. Scientific activities in 1994
International Nuclear Information System (INIS)
1995-10-01
This publication gives a comprehensive overview of the scientific activities during 1994 of the International Centre for Theoretical Physics, Trieste. In particular, it gives (i) a summary of these activities accompanied by statistical data (comparison with 1993, participation by geographical area, breakdown by field of activity, activities held at and outside the ICTP, and participation by activity); (ii) an overview of the scientific programme (fundamental physics, condensed matter physics, mathematics, physics and energy, physics and the environment, physics of the living state, applied physics, diploma courses, and other research) while listing long-term visitors, networks of associate members and federal institutes, training and research at Italian laboratories, external activities, science, the high technology and development programme, the books and equipment programme, award; (iii) a list of publications, and (iv) a list of scientific support services
Theoretical Femtosecond Physics Atoms and Molecules in Strong Laser Fields
Grossmann, Frank
2008-01-01
Theoretical femtosecond physics is a new field of research. Theoretical investigations of atoms and molecules interacting with pulsed or continuous wave lasers of up to atomic field strengths are leading to an understanding of many challenging experimental discoveries. Laser-matter interaction is treated on a nonperturbative level in the book using approximate and numerical solutions of the time-dependent Schrödinger equation. The light field is treated classically. Physical phenomena, ranging from ionization of atoms to the ionization and dissociation of molecules and the control of chemical reactions are presented and discussed. Theoretical background for experiments with strong and short laser pulses is given. Several exercises are included in the main text. Some detailed calculations are performed in the appendices.
Theoretical high energy physics research at the University of Chicago
International Nuclear Information System (INIS)
Rosner, J.L.; Martinec, E.J.; Sachs, R.G.
1989-12-01
This report contains brief discussions on theoretical High Energy Physics research done by the researchers at University of Chicago. Some topics covered are: lepton production; kaon decay; Higgs boson production; electric dipole moment of the neutron; string models; supersymmetry; and cosmic ray shower
Some applications of mathematics in theoretical physics - A review
Energy Technology Data Exchange (ETDEWEB)
Bora, Kalpana [Physics Department, Gauhati University, Guwahati-781014, Assam (India)
2016-06-21
Mathematics is a very beautiful subject−very much an indispensible tool for Physics, more so for Theoretical Physics (by which we mean here mainly Field Theory and High Energy Physics). These branches of Physics are based on Quantum Mechanics and Special Theory of Relativity, and many mathematical concepts are used in them. In this work, we shall elucidate upon only some of them, like−differential geometry, infinite series, Mellin transforms, Fourier and integral transforms, special functions, calculus, complex algebra, topology, group theory, Riemannian geometry, functional analysis, linear algebra, operator algebra, etc. We shall also present, some physics issues, where these mathematical tools are used. It is not wrong to say that Mathematics is such a powerful tool, without which, there can not be any Physics theory!! A brief review on our research work is also presented.
Some applications of mathematics in theoretical physics - A review
Bora, Kalpana
2016-06-01
Mathematics is a very beautiful subject-very much an indispensible tool for Physics, more so for Theoretical Physics (by which we mean here mainly Field Theory and High Energy Physics). These branches of Physics are based on Quantum Mechanics and Special Theory of Relativity, and many mathematical concepts are used in them. In this work, we shall elucidate upon only some of them, like-differential geometry, infinite series, Mellin transforms, Fourier and integral transforms, special functions, calculus, complex algebra, topology, group theory, Riemannian geometry, functional analysis, linear algebra, operator algebra, etc. We shall also present, some physics issues, where these mathematical tools are used. It is not wrong to say that Mathematics is such a powerful tool, without which, there can not be any Physics theory!! A brief review on our research work is also presented.
Some applications of mathematics in theoretical physics - A review
International Nuclear Information System (INIS)
Bora, Kalpana
2016-01-01
Mathematics is a very beautiful subject−very much an indispensible tool for Physics, more so for Theoretical Physics (by which we mean here mainly Field Theory and High Energy Physics). These branches of Physics are based on Quantum Mechanics and Special Theory of Relativity, and many mathematical concepts are used in them. In this work, we shall elucidate upon only some of them, like−differential geometry, infinite series, Mellin transforms, Fourier and integral transforms, special functions, calculus, complex algebra, topology, group theory, Riemannian geometry, functional analysis, linear algebra, operator algebra, etc. We shall also present, some physics issues, where these mathematical tools are used. It is not wrong to say that Mathematics is such a powerful tool, without which, there can not be any Physics theory!! A brief review on our research work is also presented.
From Newton to Mandelbrot a primer in theoretical physics
Stauffer, Dietrich; Lesne, Annick
2017-01-01
This textbook takes the reader on a tour of the most important landmarks of theoretical physics: classical, quantum, and statistical mechanics, relativity, electrodynamics, as well as the most modern and exciting of all: elementary particles and the physics of fractals. The second edition has been supplemented with a new chapter devoted to concise though complete presentation of dynamical systems, bifurcations and chaos theory. The treatment is confined to the essentials of each area, presenting all the central concepts and equations at an accessible level. Chapters 1 to 4 contain the standard material of courses in theoretical physics and are supposed to accompany lectures at the university; thus they are rather condensed. They are supposed to fill one year of teaching. Chapters 5 and 6, in contrast, are written less condensed since this material may not be part of standard lectures and thus could be studied without the help of a university teacher. An appendix on elementary particles lies somewhere in betwe...
2014-09-01
This volume contains selected papers presented at the 38th National Conference on Theoretical Physics (NCTP-38) and the 1st International Workshop on Theoretical and Computational Physics: Condensed Matter, Soft Matter and Materials Physics (IWTCP-1). Both the conference and the workshop were held from 29 July to 1 August 2013 in Pullman hotel, Da Nang, Vietnam. The IWTCP-1 was a new activity of the Vietnamese Theoretical Physics Society (VTPS) organized in association with the 38th National Conference on Theoretical Physics (NCTP-38), the most well-known annual scientific forum dedicated to the dissemination of the latest development in the field of theoretical physics within the country. The IWTCP-1 was also an External Activity of the Asia Pacific Center for Theoretical Physics (APCTP). The overriding goal of the IWTCP is to provide an international forum for scientists and engineers from academia to share ideas, problems and solution relating to the recent advances in theoretical physics as well as in computational physics. The main IWTCP motivation is to foster scientific exchanges between the Vietnamese theoretical and computational physics community and world-wide scientists as well as to promote high-standard level of research and education activities for young physicists in the country. About 110 participants coming from 10 countries participated in the conference and the workshop. 4 invited talks, 18 oral contributions and 46 posters were presented at the conference. In the workshop we had one keynote lecture and 9 invited talks presented by international experts in the fields of theoretical and computational physics, together with 14 oral and 33 poster contributions. The proceedings were edited by Nguyen Tri Lan, Trinh Xuan Hoang, and Nguyen Ai Viet. We would like to thank all invited speakers, participants and sponsors for making the conference and the workshop successful. Nguyen Ai Viet Chair of NCTP-38 and IWTCP-1
Modeling theoretical uncertainties in phenomenological analyses for particle physics
Energy Technology Data Exchange (ETDEWEB)
Charles, Jerome [CNRS, Aix-Marseille Univ, Universite de Toulon, CPT UMR 7332, Marseille Cedex 9 (France); Descotes-Genon, Sebastien [CNRS, Univ. Paris-Sud, Universite Paris-Saclay, Laboratoire de Physique Theorique (UMR 8627), Orsay Cedex (France); Niess, Valentin [CNRS/IN2P3, UMR 6533, Laboratoire de Physique Corpusculaire, Aubiere Cedex (France); Silva, Luiz Vale [CNRS, Univ. Paris-Sud, Universite Paris-Saclay, Laboratoire de Physique Theorique (UMR 8627), Orsay Cedex (France); Univ. Paris-Sud, CNRS/IN2P3, Universite Paris-Saclay, Groupe de Physique Theorique, Institut de Physique Nucleaire, Orsay Cedex (France); J. Stefan Institute, Jamova 39, P. O. Box 3000, Ljubljana (Slovenia)
2017-04-15
The determination of the fundamental parameters of the Standard Model (and its extensions) is often limited by the presence of statistical and theoretical uncertainties. We present several models for the latter uncertainties (random, nuisance, external) in the frequentist framework, and we derive the corresponding p values. In the case of the nuisance approach where theoretical uncertainties are modeled as biases, we highlight the important, but arbitrary, issue of the range of variation chosen for the bias parameters. We introduce the concept of adaptive p value, which is obtained by adjusting the range of variation for the bias according to the significance considered, and which allows us to tackle metrology and exclusion tests with a single and well-defined unified tool, which exhibits interesting frequentist properties. We discuss how the determination of fundamental parameters is impacted by the model chosen for theoretical uncertainties, illustrating several issues with examples from quark flavor physics. (orig.)
Renormalization Group in different fields of theoretical physics
International Nuclear Information System (INIS)
Shirkov, D.V.
1992-02-01
A very simple and general approach to the symmetry that is widely known as a Renormalization Group symmetry is presented. It essentially uses a functional formulation of group transformations that can be considered as a generalization of self-similarity transformations well known in mathematical physics since last century. This generalized Functional Self-Similarity symmetry and corresponding group transformations are discussed first for a number of simple physical problems taken from diverse fields of classical physics as well as for QED. Then we formulate the Renorm-Group Method as a regular procedure that essentially improves the approximate solutions near the singularity. After that we discuss relations between different formulations of Renormalization Group as they appear in various parts of a modern theoretical physics. Finally we present several topics of RGM application in modern QFT. (author)
Experimental And Theoretical High Energy Physics Research At UCLA
Energy Technology Data Exchange (ETDEWEB)
Cousins, Robert D. [University of California Los Angeles
2013-07-22
This is the final report of the UCLA High Energy Physics DOE Grant No. DE-FG02- 91ER40662. This report covers the last grant project period, namely the three years beginning January 15, 2010, plus extensions through April 30, 2013. The report describes the broad range of our experimental research spanning direct dark matter detection searches using both liquid xenon (XENON) and liquid argon (DARKSIDE); present (ICARUS) and R&D for future (LBNE) neutrino physics; ultra-high-energy neutrino and cosmic ray detection (ANITA); and the highest-energy accelerator-based physics with the CMS experiment and CERN’s Large Hadron Collider. For our theory group, the report describes frontier activities including particle astrophysics and cosmology; neutrino physics; LHC interaction cross section calculations now feasible due to breakthroughs in theoretical techniques; and advances in the formal theory of supergravity.
Investigations in Experimental and Theoretical High Energy Physics
Energy Technology Data Exchange (ETDEWEB)
Krennrich, Frank [Iowa State University
2013-07-29
We report on the work done under DOE grant DE-FG02-01ER41155. The experimental tasks have ongoing efforts at CERN (ATLAS), the Whipple observatory (VERITAS) and R&D work on dual readout calorimetry and neutrino-less double beta decay. The theoretical task emphasizes the weak interaction and in particular CP violation and neutrino physics. The detailed descriptions of the final report on each project are given under the appropriate task section of this report.
Essays in theoretical physics in honour of Dirk Ter Haar
Parry, W E
2013-01-01
Essays in Theoretical Physics: In Honour of Dirk ter Haar is devoted to Dirk ter Haar, detailing the breadth of Dirk's interest in physics. The book contains 15 chapters, with some chapters elucidating stellar dynamics with non-classical integrals; a mean-field treatment of charge density waves in a strong magnetic field; electrodynamics of two-dimensional (surface) superconductors; and the Bethe Ansatz and exact solutions of the Kondo and related magnetic impurity models. Other chapters focus on probing the interiors of neutron stars; macroscopic quantum tunneling; unitary transformation meth
Diverse topics in theoretical and mathematical physics festschrift Feinberg (G)
Jackiw, Roman W
1995-01-01
In this volume, topics are drawn from field theory, especially gauge field theory, as applied to particle, condensed matter and gravitational physics, and concern a variety of interesting subjects. These include geometricalDtopological effects in quantum theory, fractional charge, time travel, relativistic quantized fields in and out of thermal equilibrium and quantum modifications of symmetry in physical systems.Many readers will find this a useful volume, especially theoretical physicists and mathematicians. The material will be of interest to both the expert who will find well-presented nov
An Experimental and Theoretical High Energy Physics Program
Energy Technology Data Exchange (ETDEWEB)
Shipsey, Ian
2012-07-31
The Purdue High Energy Physics Group conducts research in experimental and theoretical elementary particle physics and experimental high energy astrophysics. Our goals, which we share with high energy physics colleagues around the world, are to understand at the most fundamental level the nature of matter, energy, space and time, and in order to explain the birth, evolution and fate of the Universe. The experiments in which we are currently involved are: CDF, CLEO-c, CMS, LSST, and VERITAS. We have been instrumental in establishing two major in-house facilities: The Purdue Particle Physics Microstructure Detector Facility (P3MD) in 1995 and the CMS Tier-2 center in 2005. The research efforts of the theory group span phenomenological and theoretical aspects of the Standard Model as well as many of its possible extensions. Recent work includes phenomenological consequences of supersymmetric models, string theory and applications of gauge/gravity duality, the cosmological implications of massive gravitons, and the physics of extra dimensions.
XXIII SERC School in Theoretical High Energy Physics (SERC THEP)
2013-01-01
The recent discovery at the Large Hadron Collider, of what is very likely the Higgs particle, has given a fillip to research in High Energy physics. These experiments hold the promise of a glimpse of physics beyond the Standard Model, which while having been verified to great accuracy, cannot be the final theory. Uncomfortable gaps -both theoretical and experimental- remain in our understanding. Lecture notes from the SERC School in Theoretical High Energy Physics held at IIT Bombay in February 2008 are contained in this volume. Topics that were covered then are of continuing importance, more so in the light of the ongoing LHC experiment. The various chapters in the book include an extensive survey of LHC physics that together with formal aspects and models of supersymmetry, review the state of the art in our understanding of the Standard Model and beyond. The article on B Physics and CP violations add to this, while the chapter on thermal field theory reviews the formalism necessary to understand the early u...
Physics of mind: Experimental confirmations of theoretical predictions.
Schoeller, Félix; Perlovsky, Leonid; Arseniev, Dmitry
2018-02-02
What is common among Newtonian mechanics, statistical physics, thermodynamics, quantum physics, the theory of relativity, astrophysics and the theory of superstrings? All these areas of physics have in common a methodology, which is discussed in the first few lines of the review. Is a physics of the mind possible? Is it possible to describe how a mind adapts in real time to changes in the physical world through a theory based on a few basic laws? From perception and elementary cognition to emotions and abstract ideas allowing high-level cognition and executive functioning, at nearly all levels of study, the mind shows variability and uncertainties. Is it possible to turn psychology and neuroscience into so-called "hard" sciences? This review discusses several established first principles for the description of mind and their mathematical formulations. A mathematical model of mind is derived from these principles. This model includes mechanisms of instincts, emotions, behavior, cognition, concepts, language, intuitions, and imagination. We clarify fundamental notions such as the opposition between the conscious and the unconscious, the knowledge instinct and aesthetic emotions, as well as humans' universal abilities for symbols and meaning. In particular, the review discusses in length evolutionary and cognitive functions of aesthetic emotions and musical emotions. Several theoretical predictions are derived from the model, some of which have been experimentally confirmed. These empirical results are summarized and we introduce new theoretical developments. Several unsolved theoretical problems are proposed, as well as new experimental challenges for future research. Copyright © 2017. Published by Elsevier B.V.
Experimental and theoretical high energy physics research. [UCLA
Energy Technology Data Exchange (ETDEWEB)
Buchanan, Charles D.; Cline, David B.; Byers, N.; Ferrara, S.; Peccei, R.; Hauser, Jay; Muller, Thomas; Atac, Muzaffer; Slater, William; Cousins, Robert; Arisaka, Katsushi
1992-01-01
Progress in the various components of the UCLA High-Energy Physics Research program is summarized, including some representative figures and lists of resulting presentations and published papers. Principal efforts were directed at the following: (I) UCLA hadronization model, PEP4/9 e{sup +}e{sup {minus}} analysis, {bar P} decay; (II) ICARUS and astroparticle physics (physics goals, technical progress on electronics, data acquisition, and detector performance, long baseline neutrino beam from CERN to the Gran Sasso and ICARUS, future ICARUS program, and WIMP experiment with xenon), B physics with hadron beams and colliders, high-energy collider physics, and the {phi} factory project; (III) theoretical high-energy physics; (IV) H dibaryon search, search for K{sub L}{sup 0} {yields} {pi}{sup 0}{gamma}{gamma} and {pi}{sup 0}{nu}{bar {nu}}, and detector design and construction for the FNAL-KTeV project; (V) UCLA participation in the experiment CDF at Fermilab; and (VI) VLPC/scintillating fiber R D.
Masculinities in School Physical education: theoretical issues and political horizons
Directory of Open Access Journals (Sweden)
Leandro Teofilo de Brito
2017-05-01
Full Text Available Based on the recognition of the urgency of the theme of gender and sexuality within the approach of the difference inclusion in School Physical education by academic research, in this article, we focus the notion of masculinity. We present and problematize the Raewyn Connell‟s theory of hegemonic masculinity, as well as the queer perspective, theoretical references identified in the literature review, which is also exposed. Based on the proposal of Jacques Derrida‟s deconstruction and the notion of performative gender, as developed by Judith Butler, we conclude this reflection with the proposition of normalizing masculinity and queer masculinity as search operators, in the theoretical and political will to favor openness to a more radical inclusion in research and lessons of SPE.
School of Analytic Computing in Theoretical High-Energy Physics
2015-01-01
In recent years, a huge progress has been made on computing rates for production processes of direct relevance to experiments at the Large Hadron Collider (LHC). Crucial to that remarkable advance has been our understanding and ability to compute scattering amplitudes and cross sections. The aim of the School is to bring together young theorists working on the phenomenology of LHC physics with those working in more formal areas, and to provide them the analytic tools to compute amplitudes in gauge theories. The school is addressed to Ph.D. students and post-docs in Theoretical High-Energy Physics. 30 hours of lectures and 4 hours of tutorials will be delivered over the 6 days of the School.
International Institute of Theoretical and Applied Physics: An introduction
Vary, James P.
1995-08-01
In partnership with the United Nations Educational, Scientific, and Cultural Organization (UNESCO), Iowa State University (ISU) has formed the International Institute of Theoretical and Applied Physics (IITAP). The mission of IITAP is to foster excellence in scientific research and teaching, especially in developing geographical areas, with an emphasis on advanced studies and original research in physics and overlapping disciplines. The Institute is open to qualified scientists of all countries. The Institute provides an open forum for scientific dialogue and furnishes modern facilities for research and collaboration among all participants of its scientific programs. The Institute will form long-term partnerships with research and teaching institutions in developing countries to help strengthen their infrastructure in science and technology. To achieve its mission, the Institute is working in partnerships with other US research organizations and institutions of learning. Six initial thrust areas and their activities are outlined.
Theoretical physics 7 quantum mechanics : methods and applications
Nolting, Wolfgang
2017-01-01
This textbook offers a clear and comprehensive introduction to methods and applications in quantum mechanics, one of the core components of undergraduate physics courses. It follows on naturally from the previous volumes in this series, thus developing the understanding of quantized states further on. The first part of the book introduces the quantum theory of angular momentum and approximation methods. More complex themes are covered in the second part of the book, which describes multiple particle systems and scattering theory. Ideally suited to undergraduate students with some grounding in the basics of quantum mechanics, the book is enhanced throughout with learning features such as boxed inserts and chapter summaries, with key mathematical derivations highlighted to aid understanding. The text is supported by numerous worked examples and end of chapter problem sets. About the Theoretical Physics series Translated from the renowned and highly successful German editions, the eight volumes of this seri...
A history of the ideas of theoretical physics essays on the nineteenth and twentieth century physics
D’Agostino, Salvo
2000-01-01
This book presents a perspective on the history of theoretical physics over the past two hundreds years. It comprises essays on the history of pre-Maxwellian electrodynamics, of Maxwell's and Hertz's field theories, and of the present century's relativity and quantum physics. A common thread across the essays is the search for and the exploration of themes that influenced significant con ceptual changes in the great movement of ideas and experiments which heralded the emergence of theoretical physics (hereafter: TP). The fun. damental change involved the recognition of the scien tific validity of theoretical physics. In the second half of the nine teenth century, it was not easy for many physicists to understand the nature and scope of theoretical physics and of its adept, the theoreti cal physicist. A physicist like Ludwig Boltzmann, one of the eminent contributors to the new discipline, confessed in 1895 that, "even the formulation of this concept [of a theoretical physicist] is not entirely without...
PREFACE: XIV Conference on Theoretical Nuclear Physics in Italy
Bombaci, I.; Covello, A.; Marcucci, L. E.; Rosati, S.
2014-07-01
This volume contains the invited and contributed papers presented at the 14th Conference on Theoretical Nuclear Physics in Italy held in Cortona, Italy, from 29-31 October, 2013. The meeting was held at the Palazzone, an elegant Renaissance Villa, commissioned by the Cardinal Silvio Passerini (1469-1529), Bishop of Cortona, and presently owned by the Scuola Normale Superiore di Pisa. The aim of this biennial Conference is to bring together Italian theorists working in various fields of nuclear physics to discuss their latest results and confront their points of view in a lively and informal way. This offers the opportunity to stimulate new ideas and promote collaborations between different research groups. The Conference was attended by 46 participants, coming from 13 Italian Universities and 11 Laboratories and Sezioni of the Istituto Nazionale di Fisica Nucleare - INFN. The program of the conference, prepared by the Organizing Committee (Ignazio Bombaci, Aldo Covello, Laura Elisa Marcucci and Sergio Rosati) focused on the following main topics: Few-Nucleon Systems Nuclear Structure Nuclear Matter and Nuclear Dynamics Relativistic Heavy Ion Collisions and Quark-Gluon Plasma Nuclear Astrophysics Nuclear Physics with Electroweak Probes Structure of Hadrons and Hadronic Matter. In the last session of the Conference there were two invited review talks related to experimental activities of great current interest. Giacomo De Angelis from the Laboratori Nazionali di Legnaro spoke about the INFN SPES radioactive ion beam project. Sara Pirrone, INFN Sezione di Catania, gave a talk on the symmetry energy and isospin physics with the CHIMERA detector. Finally, Mauro Taiuti (Università di Genova), National Coordinator of the INFN-CSN3 (Nuclear Physics Experiments), reported on the present status and future challenges of experimental nuclear physics in Italy. We gratefully acknowledge the financial support of INFN who helped make the conference possible. I Bombaci, A Covello
Informing Physics: Jacob Bekenstein and the Informational Turn in Theoretical Physics
Belfer, Israel
2014-03-01
In his PhD dissertation in the early 1970s, the Mexican-Israeli theoretical physicist Jacob Bekenstein developed the thermodynamics of black holes using a generalized version of the second law of thermodynamics. This work made it possible for physicists to describe and analyze black holes using information-theoretical concepts. It also helped to transform information theory into a fundamental and foundational concept in theoretical physics. The story of Bekenstein's work—which was initially opposed by many scientists, including Stephen Hawking—highlights the transformation within physics towards an information-oriented scientific mode of theorizing. This "informational turn" amounted to a mild-mannered revolution within physics, revolutionary without being rebellious.
Theoretical studies in medium-energy nuclear and hadronic physics
International Nuclear Information System (INIS)
Horowitz, C.J.; Macfarlane, M.H.; Matsui, T.; Serot, B.D.
1993-01-01
A proposal for theoretical nuclear physics research is made for the period April 1, 1993 through March 31, 1996. Research is proposed in the following areas: relativistic many-body theory of nuclei and nuclear matter, quasifree electroweak scattering and strange quarks in nuclei, dynamical effects in (e,e'p) scattering at large momentum transfer, investigating the nucleon's parton sea with polarized leptoproduction, physics of ultrarelativistic nucleus endash nucleus collisions, QCD sum rules and hadronic properties, non-relativistic models of nuclear reactions, and spin and color correlations in a quark-exchange model of nuclear matter. Highlights of recent research, vitae of principal investigators, and lists of publications and invited talks are also given. Recent research dealt primarily with medium-energy nuclear physics, relativistic theories of nuclei and the nuclear response, the nuclear equation of state under extreme conditions, the dynamics of the quark endash gluon plasma in relativistic heavy-ion collisions, and theories of the nucleon endash nucleon force
Theoretical femtosecond physics atoms and molecules in strong laser fields
Grossmann, Frank
2013-01-01
Theoretical investigations of atoms and molecules interacting with pulsed or continuous wave lasers up to atomic field strengths on the order of 10^16 W/cm² are leading to an understanding of many challenging experimental discoveries. This book deals with the basics of femtosecond physics and goes up to the latest applications of new phenomena. The book presents an introduction to laser physics with mode-locking and pulsed laser operation. The solution of the time-dependent Schrödinger equation is discussed both analytically and numerically. The basis for the non-perturbative treatment of laser-matter interaction in the book is the numerical solution of the time-dependent Schrödinger equation. The light field is treated classically, and different possible gauges are discussed. Physical phenonema, ranging from Rabi-oscillations in two-level systems to the ionization of atoms, the generation of high harmonics, the ionization and dissociation of molecules as well as the control of chemical reactions are pre...
Theoretical and Experimental Studies of Elementary Particle Physics
Energy Technology Data Exchange (ETDEWEB)
Evans, Harold G [Indiana University; Kostelecky, V Alan [Indiana University; Musser, James A [Indiana University
2013-07-29
The elementary particle physics research program at Indiana University spans a broad range of the most interesting topics in this fundamental field, including important contributions to each of the frontiers identified in the recent report of HEPAP's Particle Physics Prioritization Panel: the Energy Frontier, the Intensity Frontier, and the Cosmic Frontier. Experimentally, we contribute to knowledge at the Energy Frontier through our work on the D0 and ATLAS collaborations. We work at the Intensity Frontier on the MINOS and NOvA experiments and participate in R&D for LBNE. We are also very active on the theoretical side of each of these areas with internationally recognized efforts in phenomenology both in and beyond the Standard Model and in lattice QCD. Finally, although not part of this grant, members of the Indiana University particle physics group have strong involvement in several astrophysics projects at the Cosmic Frontier. Our research efforts are divided into three task areas. The Task A group works on D0 and ATLAS; Task B is our theory group; and Task C contains our MINOS, NOvA, and LBNE (LArTPC) research. Each task includes contributions from faculty, senior scientists, postdocs, graduate and undergraduate students, engineers, technicians, and administrative personnel. This work was supported by DOE Grant DE-FG02-91ER40661. In the following, we describe progress made in the research of each task during the final period of the grant, from November 1, 2009 to April 30, 2013.
31st International Colloquium in Group Theoretical Methods in Physics
Gazeau, Jean-Pierre; Faci, Sofiane; Micklitz, Tobias; Scherer, Ricardo; Toppan, Francesco
2017-01-01
This proceedings records the 31st International Colloquium on Group Theoretical Methods in Physics (“Group 31”). Plenary-invited articles propose new approaches to the moduli spaces in gauge theories (V. Pestun, 2016 Weyl Prize Awardee), the phenomenology of neutrinos in non-commutative space-time, the use of Hardy spaces in quantum physics, contradictions in the use of statistical methods on complex systems, and alternative models of supersymmetry. This volume’s survey articles broaden the colloquia’s scope out into Majorana neutrino behavior, the dynamics of radiating charges, statistical pattern recognition of amino acids, and a variety of applications of gauge theory, among others. This year’s proceedings further honors Bertram Kostant (2016 Wigner Medalist), as well as S.T. Ali and L. Boyle, for their life-long contributions to the math and physics communities. The aim of the ICGTMP is to provide a forum for physicists, mathematicians, and scientists of related disciplines who develop or apply ...
Progress report. [Research in theoretical nuclear and subnuclear physics
International Nuclear Information System (INIS)
1997-01-01
Sergei Ananyan has completed one nice piece of nuclear physics on 'Electroweak Processes Involving (0 + 0) Excitations in Nuclei' and has written this work up for publication. He is well into his main thesis problem on weak axial vector exchange currents and already has some very interesting new results. Bryan Barmore is now finishing numerical calculations on the problem of radiating meson fields in relativistic heavy ion collisions. Gary Prezeau has just started on the problem of chiral QHD with vector mesons. Gary should finish his Ph.D. in 1998. A PC has been purchased for the group through CEBAF and they are now tied into the CEBAF computer system., They have organized a Nuclear Theory Study Group in the Department and last year they worked through the books on 'Computational Nuclear Physics.' Next year they will run a series on effective field theories and chiral perturbation theory. Tod Bachman just completed a senior thesis on relativistic Hartree calculations of the newly-found doubly magic nuclei 100 Sn and 132 Sn. The book on 'Theoretical Nuclear and Subnuclear Physics' has now been published by Oxford Press. Also included here is the proposal for renewal of the contract
International Centre for Theoretical Physics. Scientific Activities in 1983
International Nuclear Information System (INIS)
1984-08-01
The main activities and results of the ICTP during 1983 are reported, according to the following programme components: Physics and energy (Plasma physics; Non-conventional energy; Nuclear physics); Fundamental physics (Elementary particles and fundamental theory); Physics of the living state (Medical physics; Applications of physics to medicine and biology); Physics and technology (Condensed matter physics and related; Atomic, molecular and laser physics; Physics of communications); Mathematics (Applicable mathematics); Physics of the environment and of natural resources (Soil physics; Geophysics); other fields
Nuclear Fermi Dynamics: physical content versus theoretical approach
International Nuclear Information System (INIS)
Griffin, J.J.
1977-01-01
Those qualitative properties of nuclei, and of their energetic collisions, which seem of most importance for the flow of nuclear matter are listed and briefly discussed. It is suggested that nuclear matter flow is novel among fluid dynamical problems. The name, Nuclear Fermi Dynamics, is proposed as an appropriate unambiguous label. The Principle of Commensurability, which suggests the measurement of the theoretical content of an approach against its expected predictive range is set forth and discussed. Several of the current approaches to the nuclear matter flow problem are listed and subjected to such a test. It is found that the Time-Dependent Hartree-Fock (TDHF) description, alone of all the major theoretical approaches currently in vogue, incorporates each of the major qualitative features within its very concise single mathematical assumption. Some limitations of the conventional TDHF method are noted, and one particular defect is discussed in detail: the Spurious Cross Channel Correlations which arise whenever several asymptotic reaction channels must be simultaneously described by a single determinant. A reformulated Time-Dependent-S-Matrix Hartree-Fock Theory is proposed, which obviates this difficulty. It is noted that the structure of TD-S-HF can be applied to a more general class of non-linear wave mechanical problems than simple TDHF. Physical requirements minimal to assure that TD-S-HF represents a sensible reaction theory are utilized to prescribe the definition of acceptable asymptotic channels. That definition, in turn, defines the physical range of the TD-S-HF theory as the description of collisions of certain mathematically well-defined objects of mixed quantal and classical character, the ''TDHF droplets.''
Theoretical femtosecond physics atoms and molecules in strong laser fields
Grossmann, Frank
2018-01-01
This textbook extends from the basics of femtosecond physics all the way to some of the latest developments in the field. In this updated edition, the chapter on laser-driven atoms is augmented by the discussion of two-electron atoms interacting with strong and short laser pulses, as well as by a review of ATI rings and low energy structures in photo-electron spectra. In the chapter on laser-driven molecules a discussion of 2D infrared spectroscopy is incorporated. Theoretical investigations of atoms and molecules interacting with pulsed lasers up to atomic field strengths on the order of 10^16 W/cm² are leading to an understanding of many challenging experimental discoveries. The presentation starts with a brief introduction to pulsed laser physics. The basis for the non-perturbative treatment of laser-matter interaction in the book is the time-dependent Schrödinger equation. Its analytical as well as numerical solution are laid out in some detail. The light field is treated classically and different possi...
[Investigations in dynamics of gauge theories in theoretical particle physics
International Nuclear Information System (INIS)
1993-01-01
The major theme of the theoretical physics research conducted under DOE support over the past several years has been within the rubric of the standard model, and concerned the interplay between symmetries and dynamics. The research was thus carried out mostly in the context of gauge field theories, and usually in the presence of chiral fermions. Dynamical symmetry breaking was examined both from the point of view of perturbation theory, as well as from non-perturbative techniques associated with certain characteristic features of specific theories. Among the topics of research were: the implications of abelian and non-abelian anomalies on the spectrum and possible dynamical symmetry breaking in any theory, topological and conformal properties of quantum fields in two and higher dimensions, the breaking of global chiral symmetries by vector-like gauge theories such as QCD, the phenomenological implications of a strongly interacting Higgs sector in the standard model, and the application of soliton ideas to the physics to be explored at the SSC
Annual report 1977 from the Institute of Theoretical Physics, Gothenburgh
International Nuclear Information System (INIS)
1978-01-01
This annual report includes sections on Elementary particel physics. Statistical Physics, Solid state physics and Mathematical physics as well as information on teaching activities, personnel and budgets. (L.E.)
Quantum mechanics. Textbook on Theoretical Physics III. 5. ed.
International Nuclear Information System (INIS)
Fliessbach, Torsten
2008-01-01
This textbook gives an introduction to quantum mechanics, as it is presented at the university in the cycle ''Theoretical Physics''. Special care has the author put om a well readable, understandable, and clearly arranged presentation, so that the reader can it reproduce without greater difficulties. By the partition into chapters, which form self-contained teaching units, and the kind of presentation the book is also very well suited for bachelor courses. Quantum mechanics is first introduced in form of Schroedinger's wave mechanics. The fundamental relations and their interpretation are thereby explained hand in hand with examples and first applications. In the following parts the most important applications of the Schroedinger equation are studied, as the alpha decay, the scattering of particles on a potential, and the hydrogen atom. Thereafter the abstract formulation of quantum mechanics (Hilbert space) is introduced in analogy to the known structure of the vector space. This formulation is applied to concrete problems, as the oscillator, the angular momentum, and the spin. The most important approximation methods of quantum mechanics are then summarized. In the final part about many-particle systems the ideal Fermi gas is treated; simple application of this model in atomic, solid-state,and astrophysics are discussed
Quantum mechanics. Textbook on theoretical physics III. 4. rev. ed.
International Nuclear Information System (INIS)
Fliessbach, T.
2005-01-01
This textbook present an intoduction to quantum mechanics, as it is offerred at the university in the cycle ''Theoretical Physics''. Special value has the author put on a well readable, understandable, and surveyable representation, so that the reader it can reproduce without larger difficulties. By the partition into chapters, which form separated course units, and the kind of the representation the book is also suited for bachelor curricula. The quantum mechanics are first introduced in the form of Schroedinge's wave mechanics. The fundamental relations of quantum mechanics and their interpretation are thereby explained by means of examples and first applications. In the following chapters the most important applications of the Schroedinger equation are studied, like the alpha decay, the scattering of a particle on a potential, and the hydrogen atom. Thereafter the abstract formulation of quantum mechanics (Hilbert space) is introduced in analogy to the known structure of the vector space. This formulation is then applied to concrete problems like the oscillator, tha angular momentum, and the spin. The most important approximation methods of quantum mechanics are then summarized. In the concluding part about many-particle systems the ideal Fermi gas is treated; simple applications of this model in atomic, solid-state, nuclear, ans astrophysics are discussed
Annual progress report for 1982 of Theoretical Reactor Physics Section
International Nuclear Information System (INIS)
Rastogi, B.P.; Kumar, Vinod
1983-01-01
The progress of work done in the Theoretical Reactor Physics Section of the Bhabha Atomic Research Centre, Bombay, during the calendar year 1982 is reported in the form of write-ups and summaries. The main thrust of the work has been to master the neutronic design technology of four different types of nuclear reactor types, namely, pressurized heavy water reactors, boiling light water reactors, pressurized light water reactors and fast breeder reactors. The development work for the neutronic analysis, fuel design, and fuel management of the BWR type reactors of the Tarapur Atomic Power Station has been completed. A new reactor simulator system for PHWR design analysis and core follow-up was completed. Three dimensional static analysis codes based on nodal and finite element methods for the design work of larger size (500-750 MWe) reactors have been developed. Space link kinetics codes in one, two and three dimensions for above-mentioned reactor systems have been written and validated. Fast reactor core disruptive analysis codes have been developed. In the course of R and D work concerning various types of reactor projects, investigations were also carried in the allied areas of Monte Carlo techniques, integral transform methods, path integral methods, high spin states in heavy nuclei and a hydrodynamics model for a laser driven fusion system. (M.G.B.)
International Centre for Theoretical Physics, Trieste: Scientific activities in 1988
International Nuclear Information System (INIS)
1989-10-01
The document contains three parts. Part I is a review of the Scientific activities in 1988 with a statistical digest. Part II describes the scientific programme in Fundamental physics, Condensed matter, Atomic and molecular physics, Mathematics, Physics and energy, Physics and environment, Physics of the living state, Applied physics, Adriatico research conferences. Part III lists the publications issued in 1988. Tabs
International Centre for Theoretical Physics: scientific activities in 1982
International Nuclear Information System (INIS)
1983-08-01
Research and training-for-research were carried out in the following areas: physics and energy (nuclear physics, solar energy), physics and frontiers of knowledge (elementary particles and fundamental theory), physics of the living state, physics and technology (condensed matter physics), applicable mathematics and planning models (applicable mathematics, mathematical ecology), physics of the environment and of natural resources (geomagnetism, ionospheric and magnetospheric physics, atmospheric physics), and physics and development. Activities included both research at the Centre and a number of workshops and symposia. The subjects treated are briefly summarized, and references to preprints and internal reports are given
Quantum Humor: The Playful Side of Physics at Bohr's Institute for Theoretical Physics
Halpern, Paul
2012-09-01
From the 1930s to the 1950s, a period of pivotal developments in quantum, nuclear, and particle physics, physicists at Niels Bohr's Institute for Theoretical Physics in Copenhagen took time off from their research to write humorous articles, letters, and other works. Best known is the Blegdamsvej Faust, performed in April 1932 at the close of one of the Institute's annual conferences. I also focus on the Journal of Jocular Physics, a humorous tribute to Bohr published on the occasions of his 50th, 60th, and 70th birthdays in 1935, 1945, and 1955. Contributors included Léon Rosenfeld, Victor Weisskopf, George Gamow, Oskar Klein, and Hendrik Casimir. I examine their contributions along with letters and other writings to show that they offer a window into some issues in physics at the time, such as the interpretation of complementarity and the nature of the neutrino, as well as the politics of the period.
International Centre for Theoretical Physics. Scientific activities in 1985
International Nuclear Information System (INIS)
1986-08-01
A review of the scientific activities of the Centre, including workshops, research, and training-for-research is presented. The scientific program consists of ten main fields, Physics and Energy, Fundamental Physics, Physics of Condensed Matter, Applied Physics, Physics of the Living State, Physics of the Environment, Mathematics, Physics Teaching, Experimental Physics Training, and Physics and Development. In addition to a brief description of each workshop, symposium, college, and meeting, tables summarizing the participation at ICTP activities are given. A list of preprints and internal reports issued in 1985 is included
Annual report of the Center for Theoretical Physics, 1985
International Nuclear Information System (INIS)
1987-01-01
Research on dynamical systems; statistical physics; string theory; field theory; elementary particle physics (QCD, standard model, GUT); plasma physics (inertial and magnetic confinement); astrophysics; and statistical mechanics is presented [fr
Annual report of the Center for Theoretical Physics
International Nuclear Information System (INIS)
1986-01-01
Research on dynamical systems; statistical physics; string theory; field theory; elementary particle physics (QCD, standard model, GUT); plasma physics (inertial and magnetic confinement); astrophysics; and statistical mechanics is presented [fr
International Centre for Theoretical Physics, Trieste: Scientific activities in 1989
International Nuclear Information System (INIS)
1990-09-01
The document contains three parts. Part I is a general review of the scientific activities in 1989 including a statistical digest. Part II describes the scientific programme in Fundamental Physics, Condensed Matter Physics, Mathematics, Physics and Energy, Physics and Environment, Applied Physics, Physics of the Space, Adriatico Research Conferences and other aspects of the Centre activities. Part III lists the publications issued in 1989. Tabs
International Centre for Theoretical Physics: scientific activities in 1984
International Nuclear Information System (INIS)
1985-09-01
A review of the scientific activities of the Centre, including workshops, research, and training-for-research is presented. The scientific program consists of seven main fields, Physics and Energy, Fundamental Physics, Physics and Technology, Physics of the Living State, Physics of the Environment, Physics and Development, and Mathematics. In addition to a brief description of each workshop, symposium, college, and meeting, tables summarizing the participation at ICTP activities are given. A list of preprints and internal reports issued in 1984 is included
International Centre for Theoretical Physics, Trieste. Scientific activities in 1990
International Nuclear Information System (INIS)
1991-09-01
The document contains three parts: Part I is a general review of the scientific activities of the Centre in 1990, including a statistical digest. Part II describes the scientific programme of the Centre in the following fields: Fundamental physics, condensed nuclear physics, mathematics, physics and energy, physics and environment, physics of the living state, applied physics Adriatico research conferences and other aspects of the Centre activities. Part III lists the publications issued in 1990
International Centre for Theoretical Physics: Scientific activities in 1986
International Nuclear Information System (INIS)
1987-10-01
A review of the scientific activities of the Centre in 1986, including workshops, research and training-for-research is presented. The scientific program consists of eight main fields: Physics and Energy, Fundamental Physics, Physics of Condensed Matter, Applied Physics, Mathematics, Physics of the Environment and of National Resources, Physics of the Living State, Physics and Development. In addition to a brief description of each workshop, symposium, college and meeting, tables summarizing the participation of ICTP activities are given. A list of preprints and internal reports issued in 1986 is included
International Centre for Theoretical Physics, Trieste Scientific activities in 1991
International Nuclear Information System (INIS)
1992-11-01
The document contains three parts. Part 1 is a general review of the scientific activities of the Centre in 1991, including a statistical digest. Part II presents the scientific programme of the Centre in the following fields: Fundamental Physics, Condensed Matter Physics, Mathematics, Physics and Energy, Physics and Environment, Applied Physics, Adriatico Research Conferences, as well as other aspects of the Centre activities in 1991. Part III lists the publications issued in 1991. Tabs
Development of theoretical approach to physics of nuclear molecules
Kim, G; Yuldashev, B S
2002-01-01
The present work is dedicated to the theoretical study of the exotic nuclear systems, which consist of the nuclear molecular complexes of the alpha-chain and halo nuclei. The brief review of the experimental data and the theoretical methods for the nuclear molecular system description is presented. The theoretical research plan is suggested. As the plan carried out and the results obtained, it will be possible to have the deeper understanding of mechanism formation and stability of such system as well as their static and dynamic properties. The possibilities of the unique facilities creation on the basis of nuclear molecular materials of the future are considered. (author)
We need theoretical physics approaches to study living systems
Blagoev, Krastan B.; Shukla, Kamal; affil="3" >Herbert Levine,
2013-08-01
Living systems, as created initially by the transition from assemblies of large molecules to self-reproducing information-rich cells, have for centuries been studied via the empirical toolkit of biology. This has been a highly successful enterprise, bringing us from the vague non-scientific notions of vitalism to the modern appreciation of the biophysical and biochemical bases of life. Yet, the truly mind-boggling complexity of even the simplest self-sufficient cells, let alone the emergence of multicellular organisms, of brain and consciousness, and to ecological communities and human civilizations, calls out for a complementary approach. In this editorial, we propose that theoretical physics can play an essential role in making sense of living matter. When faced with a highly complex system, a physicist builds simplified models. Quoting Philip W Anderson's Nobel prize address, 'the art of model-building is the exclusion of real but irrelevant parts of the problem and entails hazards for the builder and the reader. The builder may leave out something genuinely relevant and the reader, armed with too sophisticated an experimental probe, may take literally a schematized model. Very often such a simplified model throws more light on the real working of nature....' In his formulation, the job of a theorist is to get at the crux of the system by ignoring details and yet to find a testable consequence of the resulting simple picture. This is rather different than the predilection of the applied mathematician who wants to include all the known details in the hope of a quantitative simulacrum of reality. These efforts may be practically useful, but do not usually lead to increased understanding. To illustrate how this works, we can look at a non-living example of complex behavior that was afforded by spatiotemporal patterning in the Belousov-Zhabotinsky reaction [1]. Physicists who worked on this system did not attempt to determine all the relevant chemical intermediates
International Centre for Theoretical Physics, Trieste, scientific activities in 1992
International Nuclear Information System (INIS)
1993-08-01
The document contains three parts. Part I is a programme overview of 1992 including a description of scientific activities and statistics about participation by geographic areas and by activities. Part II presents the scientific programme in the following fields: fundamental physics, condensed matter physics, mathematics, physics related to the energy problems, physics and the environment, physics of the living state (of matter), and applied physics. Conferences and other activities by the centre are also listed. Part III lists the publications issued in 1992. 5 tabs
International Centre for Theoretical Physics. Scientific activities in 1987
International Nuclear Information System (INIS)
1988-12-01
A review of the scientific activities of the ICTP Trieste in 1987, including workshops, research and training for research is presented. The scientific program consists of eight main fields: fundamental physics, condensed matter, atomic and molecular physics, mathematics, physics and energy, physics and environment, applied physics and high technology, physics and development. In addition to a brief description of each workshop, symposium, college, meeting and activity or project sponsored by ICTP, a list of preprints and internal reports issued in 1987 is included. Tabs
First, Leili K.
This dissertation investigates the intersections and interactions of factors which enhance and inhibit creativity in theoretical physics research, using a situational analysis of the fifth Solvay Council on Physics of 1927 (Solvay 1927), a pivotal point in the history of quantum physics. Situational analysis is a postmodern variant of the grounded theory method which views a situation as the unit of analysis and adds situational mapping as an analytic tool. This method specifically works against normalizing or simplifying the points of view, instead drawing out diversity, complexity, and contradiction. It results in "theorizing" rather than theory. This research differs from other analyses of the development of quantum mechanics in looking at technical issues as well as individual, collective, and societal factors. Data examined in this historical analysis includes theoretical papers, conference proceedings, personal letters, and commentary and analysis, both contemporaneous and modern. Literature related to scientific creativity was also consulted. Mapping the situation as a master discourse of Niels Bohr overlapping and interacting with co-existent major discourses on matrix mechanics/Copenhagen interpretation, wave mechanics, and the pilot-wave theory resulted in the most descriptive illustration of the factors influencing scientific creativity before and after Solvay 1927. The master discourse strongly influenced the major discourses and generated the "Copenhagen spirit" which effectively marginalized discourses other than matrix mechanics/Copenhagen interpretation after Solvay 1927.
Progress report 1985/86 of the Institute for Theoretical Physics, Technical University of Vienna
International Nuclear Information System (INIS)
Hafner, J.
1986-10-01
Short descriptions of projects in the fields: 1) theoretical solid state physics, 2) statistical physics, 3) mathematical physics, 4) quantum mechanics, 5) quantum optics, 6) elementary particles physics, 7) quantum field theory and gauge theory and a list of lectures, seminars and publications. (G.Q.)
Annual report of the Institute for Theoretical Physics in Graz, Austria
International Nuclear Information System (INIS)
Schnizer, B.
1988-11-01
A short description and the status of projects in the fields: electrodynamics; quantum mechanics; theoretical solid state physics; transport theory; energy physics and - economy; fusion- and plasma physics; reactor- and radiation physics is given. 20 of them are in INIS scope. (qui)
International Centre for Theoretical Physics. Scientific activities in 1980
International Nuclear Information System (INIS)
1981-09-01
The Centre's scientific programme for 1980 falling under five main fields, i.e. Physics and Energy, Physics and Technology, Physics and Frontiers of Knowledge, Applicable Mathematics and Planning Models, and Physics of the Environment and of Natural Resources, is briefly discussed. Participation in the research and training-for-research activities of the ICTP during 1980 and the stable resources for the period 1970 to 1981 are shown in tables. A detailed ''post-spectus'' of the seminars, meetings, and courses which the centre organized in 1980 is given. A list of titles of the preprints and internal reports produced during the year is also given for each area of activity
Theoretical atomic and molecular physics at X ICPEAC
International Nuclear Information System (INIS)
Schneider, B.I.
1977-01-01
A brief discussion is presented of those theoretical contributions at the X ICPEAC which seemed most personally exciting or drew the most comments or response from other participants at the meeting. Personal bias will inevitably be obvious and for this I can only apologize to the other speakers and participants at the conference
System-wide Benefits of Intermeal Fasting by Autophagy.
Martinez-Lopez, Nuria; Tarabra, Elena; Toledo, Miriam; Garcia-Macia, Marina; Sahu, Srabani; Coletto, Luisa; Batista-Gonzalez, Ana; Barzilai, Nir; Pessin, Jeffrey E; Schwartz, Gary J; Kersten, Sander; Singh, Rajat
2017-12-05
Autophagy failure is associated with metabolic insufficiency. Although caloric restriction (CR) extends healthspan, its adherence in humans is poor. We established an isocaloric twice-a-day (ITAD) feeding model wherein ITAD-fed mice consume the same food amount as ad libitum controls but at two short windows early and late in the diurnal cycle. We hypothesized that ITAD feeding will provide two intervals of intermeal fasting per circadian period and induce autophagy. We show that ITAD feeding modifies circadian autophagy and glucose/lipid metabolism that correlate with feeding-driven changes in circulating insulin. ITAD feeding decreases adiposity and, unlike CR, enhances muscle mass. ITAD feeding drives energy expenditure, lowers lipid levels, suppresses gluconeogenesis, and prevents age/obesity-associated metabolic defects. Using liver-, adipose-, myogenic-, and proopiomelanocortin neuron-specific autophagy-null mice, we mapped the contribution of tissue-specific autophagy to system-wide benefits of ITAD feeding. Our studies suggest that consuming two meals a day without CR could prevent the metabolic syndrome. Copyright © 2017 Elsevier Inc. All rights reserved.
Theoretical high energy physics research at the University of Chicago
Energy Technology Data Exchange (ETDEWEB)
Rosner, J.L.; Martinec, E.J.; Sachs, R.G.
1990-09-01
This report discusses research being done at the University of Chicago in High Energy Physics. Some topic covered are: CP violation; intermediate vector bosons; string models; supersymmetry; and rare decay of kaons. (LSP)
Theoretical high energy physics research at the University of Chicago
International Nuclear Information System (INIS)
Rosner, J.L.; Martinec, E.J.; Sachs, R.G.
1990-09-01
This report discusses research being done at the University of Chicago in High Energy Physics. Some topic covered are: CP violation; intermediate vector bosons; string models; supersymmetry; and rare decay of kaons
Theoretical Physics Division progress report October 1979 - September 1980
International Nuclear Information System (INIS)
1981-04-01
Research at Harwell on nuclear, atomic and molecular physics, the theory of fluids, radiation damage, safety studies, point defects and point defect determined processes, surface studies and nondestructive examination are described. (U.K.)
Research in theoretical nuclear physics. Annual progress report No. 18
International Nuclear Information System (INIS)
1986-01-01
Research programs in four major areas are described: the structure of the nucleon and the nucleon-nucleon interaction, strangeness, and strange baryons; the equation of state of dense matter with specific concern both for the problems of stellar collapse and supernova explosions and of relativistic heavy-ion collisions, nuclear structure physics; and relativistic effects in nuclear particularly heavy ion reactions and quark matter physics. New research efforts in many-body theory are also described
Theoretical approach of physical growth of children and adolescents
Directory of Open Access Journals (Sweden)
Rossana Gomez-Campos
2016-09-01
Full Text Available According to their genetic potential, biological characteristics and environmental factors, the study of physical growth allows us to understand the variability of this process in humans. Extrinsic and intrinsic factors could affect the normal process of physical growth, which are studied through different types of research, becoming an interesting subject for professionals in the health sciences. The aim of this study is to analyze the factors affecting physical growth and describe the types of research (transverse, longitudinal and ex post facto used in the study of physical growth. Intrinsic factors, environmental factors and the interaction between them should be studied in diverse population prioritizing the potential factors affecting physical growth of children and adolescents. This will diagnose, classify and monitor physical growth versus time (transverse and longitudinal and retrospectively (ex post facto. Consequently, the possibility for researchers and/or private and government institutions arises to promote validated anthropometric studies, helping to implement effective health policies for various purposes such as excess weight control in childhood and other disease entities related nutrition.
The Padé approximant in theoretical physics
Baker, George Allen
1970-01-01
In this book, we study theoretical and practical aspects of computing methods for mathematical modelling of nonlinear systems. A number of computing techniques are considered, such as methods of operator approximation with any given accuracy; operator interpolation techniques including a non-Lagrange interpolation; methods of system representation subject to constraints associated with concepts of causality, memory and stationarity; methods of system representation with an accuracy that is the best within a given class of models; methods of covariance matrix estimation;methods for low-rank mat
Impact of theoretical courses on physical health performance
Directory of Open Access Journals (Sweden)
Mohammed Zerf
2016-01-01
Full Text Available Background: Physical activity, health fitness, and academic results are very important goals in student life. However, success lies in academic subjects in educational establishments. Our background reveals the contradictions between two philosophers who approved the importance of physical education (PE as a component of the curriculum and others who reiterated that PE and sports would never be a component of the curriculum as is the case in Algerian universities. Methods: The research samples were selected by the intentional manner which included sixty students, aged around 18 years. Twenty girls who will pass the baccalaureate, twenty girls of the 1 st year department languages, and twenty girls of the 1 st year PE and sports for the academic year 2014-2015 were included in the study. They were tested based on the field tests developed by the Canadian Society for Exercise Physiology. Results: Our results confirm that the absence of PE lessons and sport case department languages leads to loss of fitness in the opposite of high-school and students of the Institute of Sports, where the effects return to the absence of the session of physical education and sport. Conclusion: Physical activities are very important in the life of our scholar girls, where the sport practice is a physical as well as a mental effort which is the key to a healthier life.
Operationalization of biopsychosocial case complexity in general health care : the INTERMED project
de Jonge, P; Huyse, FJ; Slaets, JPJ; Sollner, W; Stiefel, FC
Objective: Lack of operationalization of the biopsychosocial model hinders its effective application to the increasingly prevalent problems of comorbidities in clinical presentations. Here, we describe the INTERMED, an instrument to assess biopsychosocial case complexity in general health care, and
Perspectives in theoretical physics the collected papers of E. M. Lifshitz
Sykes, J B; Pitaevskii, L P
1992-01-01
Evgenii Mikhailovich Lifshitz is perhaps best known for his long association with his mentor Lev D Landau, with whom he co-wrote the classic Course of Theoretical Physics, but he was a noted and respected Soviet physicist in his own right. Born in the Ukraine to a scientific family, his long and distinguished career will be remembered for three things - his collaboration with Landau on the internationally acclaimed Course of Theoretical Physics, his work as editor of the Journal of Experimental and Theoretical Physics, and his scientific papers. As well as his work with La
Theoretical research in intermediate energy nuclear physics: Final report
International Nuclear Information System (INIS)
Seki, R.
1987-01-01
This paper discusses the progress that has been made on the following problems: a numerical calculation of Skyrmiron scattering; (e,e'p) at high momentum transfer; spin-orbit nucleon-nucleon potential from Skyrme model; pionic atom anomaly; and field theory problems. The problems deal with various topics in intermediate-energy nuclear physics
[Experimental and theoretical nuclear physics]: 1988 Annual report
International Nuclear Information System (INIS)
1988-05-01
This paper describes the highlights of the past year of the Nuclear Physics Laboratory at the University of Washington. Particular topics discussed are: astrophysics, giant resonance, heavy ion induced reactions, fundamental symmetries, nuclear reactions, medium energy reactions, accelerator mass spectrometry, Van de Graaf and ion sources, the booster linac project, instrumentation and computer systems
Higgs physics at future colliders: Recent theoretical developments
Indian Academy of Sciences (India)
I review the physics of the Higgs sector in the standard model and its minimal supersymmetric extension, the MSSM. I will discuss the prospects for discovering the Higgs particles at the ungraded Tevatron, at the large hadron collider, and at a future high-energy e + e − linear collider with centre-of-mass energy in the ...
Theoretical Advanced Study Institute in Elementary Particle Physics
2017-01-01
The program will consist of a pedagogical series of lectures and seminars. Lectures will be given over a four-week period, three or four lectures per day, Monday through Friday. The audience will be composed primarily of advanced theoretical graduate students. Experimentalists with a strong background in theory are also encouraged to apply. Some post-doctoral fellows will be admitted, but preference will be given to applicants who will not have received their Ph.D. before 2017. The minimum background needed to get full benefit of TASI is a knowledge of quantum field theory (including RGEs) and familiarity with the Standard Model. Some familiarity with SUSY would be helpful. We hope to provide some subsidy, but students will need partial support from other sources. Rooms, meals, and access to all facilities will be provided at reasonable rates in beautifully located dormitories at the University of Colorado.
Physics of human cooperation: experimental evidence and theoretical models
Sánchez, Angel
2018-02-01
In recent years, many physicists have used evolutionary game theory combined with a complex systems perspective in an attempt to understand social phenomena and challenges. Prominent among such phenomena is the issue of the emergence and sustainability of cooperation in a networked world of selfish or self-focused individuals. The vast majority of research done by physicists on these questions is theoretical, and is almost always posed in terms of agent-based models. Unfortunately, more often than not such models ignore a number of facts that are well established experimentally, and are thus rendered irrelevant to actual social applications. I here summarize some of the facts that any realistic model should incorporate and take into account, discuss important aspects underlying the relation between theory and experiments, and discuss future directions for research based on the available experimental knowledge.
The Bogolyubov renormalization group in theoretical and mathematical physics
International Nuclear Information System (INIS)
Shirkov, D.V.
1999-01-01
This text follows the line of a talk on Ringberg symposium dedicated to Wolfhart Zimmermann 70th birthday. The historical overview (Part I) partially overlaps with corresponding text of my previous commemorative paper - see Ref. [6] in the list. At the same time the second part includes some fresh results in QFT (Sect. 2.1.) and summarizes (Sect. 2.4) an impressive recent progress of the 'QFT renormalization group' application in mathematical physics
Theoretical high energy physics research at the University of Chicago
International Nuclear Information System (INIS)
Rosner, J.L.; Martinec, E.J.; Sachs, R.G.
1993-04-01
Brief narrative descriptions of work performed are given on numerous topics including the following: CP violation, Cabibbo--Kobayashi--Maskawa matrix, and B physics; radiative corrections and electroweak observables; heavy quark symmetry; heavy meson spectroscopy; composite models of quarks and leptons; supersymmetric quantum mechanics, inverse scattering, and the vertex operator; cosmological constraints on lepton-number violation in SO(10) models; black hole evaporation; the light cone in string theory; surfaces in the 3D Ising model; and conformal field theories
Variational Principles and Methods in Theoretical Physics and Chemistry
Nesbet, Robert K.
2005-07-01
Preface; Part I. Classical Mathematics and Physics: 1. History of variational theory; 2. Classical mechanics; 3. Applied mathematics; Part II. Bound States in Quantum Mechanics: 4. Time-independent quantum mechanics; 5. Independent-electron models; 6. Time-dependent theory and linear response; Part III. Continuum States and Scattering Theory: 7. Multiple scattering theory for molecules and solids; 8. Variational methods for continuum states; 9. Electron-impact rovibrational excitation of molecules; Part IV. Field Theories: 10. Relativistic Lagrangian theories.
Theoretical physics department, june 96-may 98 status report
International Nuclear Information System (INIS)
1998-01-01
This status report presents the work done at SPhT (service de physique theorique, CEA) from june 96 to may 98. The topics have been classified into 3 themes: - statistical physics, - mathematical physics and field theory, - astrophysics, nuclear and particle physics. In the first theme relevant contributions have been made to phase transitions, correlated electronic systems, polymers, membranes, proteins, disordered systems and out of equilibrium processes. The second theme collects various works, some works dedicated to aleatory matrices and quantum chaos aim at developing investigation methods, other works like cord theories use these methods. As for the third theme, the recent discovery of the fluctuations of background cosmological radiation has fomented a great activity at SPhT. Mean field approximation and effective strength have been the starting point of research in the field of nuclear structure. High energy quantum chromodynamics has been applied to deep inelastic scattering where the proton structure is studied through electron-proton collisions. A list of all the publications made by SPhT is given. (A.C.)
Hoang, Trinh Xuan; Ky, Nguyen Anh; Lan, Nguyen Tri; Viet, Nguyen Ai
2015-06-01
This volume contains selected papers presented at the 2nd International Workshop on Theoretical and Computational Physics (IWTCP-2): Modern Methods and Latest Results in Particle Physics, Nuclear Physics and Astrophysics and the 39th National Conference on Theoretical Physics (NCTP-39). Both the workshop and the conference were held from 28th - 31st July 2014 in Dakruco Hotel, Buon Ma Thuot, Dak Lak, Vietnam. The NCTP-39 and the IWTCP-2 were organized under the support of the Vietnamese Theoretical Physics Society, with a motivation to foster scientific exchanges between the theoretical and computational physicists in Vietnam and worldwide, as well as to promote high-standard level of research and education activities for young physicists in the country. The IWTCP-2 was also an External Activity of the Asia Pacific Center for Theoretical Physics (APCTP). About 100 participants coming from nine countries participated in the workshop and the conference. At the IWTCP-2 workshop, we had 16 invited talks presented by international experts, together with eight oral and ten poster contributions. At the NCTP-39, three invited talks, 15 oral contributions and 39 posters were presented. We would like to thank all invited speakers, participants and sponsors for making the workshop and the conference successful. Trinh Xuan Hoang, Nguyen Anh Ky, Nguyen Tri Lan and Nguyen Ai Viet
Pediatric Physical Therapy: Part I. Practice Scope, Scientific Basis, and Theoretical Foundation.
Heriza, Carolyn B.; Sweeney, Jane K.
1994-01-01
This article on pediatric physical therapy first offers a historical perspective and then looks at the scope of clinical practice in the field, the field's scientific basis, and its theoretical foundations. (Author/DB)
Theoretical high energy physics: Progress report, May 1, 1988--April 30, 1989
International Nuclear Information System (INIS)
Lee, T.D.
1989-05-01
This paper discusses theoretical research done in high energy physics at Columbia University. Some of the topics discussed are: conformal field theory; QCD calculations; study of long-range forces; superconductivity; and cosmology
Electroweak Physics at the Tevatron and LHC: Theoretical Status and Perspectives
Baur, U.
2005-01-01
I review the status of theoretical calculations relevant for electroweak physics at the Tevatron and LHC and discuss future directions. I also give a brief overview of current electroweak data and discuss future expectations.
Adventures in theoretical physics selected papers with commentaries
Adler, Stephen L
2006-01-01
Podcast of Frank Wilczek and Betsy Devine's interview with Steve Mirsky of Scientific American The fantastic reality that is modern physics is open for your exploration, guided by one of its primary architects and interpreters, Nobel Prize winner Frank Wilczek.Some jokes, some poems, and extracts from wife Betsy Devine's sparkling chronicle of what it's like to live through a Nobel Prize provide easy entertainment. There's also some history, some philosophy, some exposition of frontier science, and some frontier science, for your lasting edification.49 pieces, including many from Wilczek's awa
The second physicist on the history of theoretical physics in germany
Jungnickel, Christa
2017-01-01
This book explores the rise of theoretical physics in 19th century Germany. The authors show how the junior second physicist in German universities over time became the theoretical physicist, of equal standing to the experimental physicist. Gustav Kirchhoff, Hermann von Helmholtz, and Max Planck are among the great German theoretical physicists whose work and career are examined in this book. Physics was then the only natural science in which theoretical work developed into a major teaching and research specialty in its own right. Readers will discover how German physicists arrived at a well-defined field of theoretical physics with well understood and generally accepted goals and needs. The authors explain the nature of the work of theoretical physics with many examples, taking care always to locate the research within the workplace. The book is a revised and shortened version of Intellectual Mastery of Nature: Theoretical Physics from Ohm to Einstein, a two-volume work by the same authors. This new edition ...
XXI and XXII SERC Main School in Theoretical High Energy Physics
Sivakumar, M; Surveys in theoretical high energy physics 2 : lecture notes from SERC Schools
2016-01-01
The book presents pedagogical reviews of important topics on high energy physics to the students and researchers in particle physics. The book also discusses topics on the Quark–Gluon plasma, thermal field theory, perturbative quantum chromodynamics, anomalies and cosmology. Students of particle physics need to be well-equipped with basic understanding of many concepts underlying the standard models of particle physics and cosmology. This is particularly true today when experimental results from colliders, such as large hadron collider (LHC) and relativistic heavy ion collider (RHIC), as well as inferences from cosmological observations, are expected to further expand our understanding of particle physics at high energies. This volume is the second in the Surveys in Theoretical High Energy Physics Series (SThEP). Topics covered in this book are based on lectures delivered at the SERC Schools in Theoretical High Energy Physics at the Physical Research Laboratory, Ahmedabad, and the University of Hyderabad.
Final report. [Research in theoretical and experimental elementary particle physics
International Nuclear Information System (INIS)
1998-01-01
This report gives summaries of particle physics research conducted by different group members for Task A. A summary of work on the CLEO experiment and detector is included for Task B along with a list of CLEO publications. During the present grant period for Task C, the authors had responsibility for the design, assembly, and programming of the high-resolution spectrometer which looks for narrow peaks in the output of the cavity in the LLNL experiment. They successfully carried out this task. Velocity peaks are expected in the spectrum of dark matter axions on Earth. The computing proposal (Task S) is submitted in support of the High Energy Experiment (CLEO, Fermilab, CMS) and the Theory tasks
[Research in theoretical and experimental elementary particle physics. Final report
Energy Technology Data Exchange (ETDEWEB)
NONE
1998-11-01
This report gives summaries of particle physics research conducted by different group members for Task A. A summary of work on the CLEO experiment and detector is included for Task B along with a list of CLEO publications. During the present grant period for Task C, the authors had responsibility for the design, assembly, and programming of the high-resolution spectrometer which looks for narrow peaks in the output of the cavity in the LLNL experiment. They successfully carried out this task. Velocity peaks are expected in the spectrum of dark matter axions on Earth. The computing proposal (Task S) is submitted in support of the High Energy Experiment (CLEO, Fermilab, CMS) and the Theory tasks.
THEORETICAL APPROACH TO EDIXGAL. DIGITAL BOOK OF PHYSICAL EDUCATION
Directory of Open Access Journals (Sweden)
Eduardo Rafael Rodríguez Machado
2014-12-01
Full Text Available One of the great dilemmas in which the educational community is is the bet on electronic textbooks (aka eTextbook at the expense of textbooks printed in Galicia has been chosen in some centers to gradually introducing the book electronic text in classrooms 5th Primary Education.This article describes the characteristics that define the electronic textbook and make you be attractive and useful to the educational community are realized. First, it defines the digital book and materialize their characteristics and problems and drawbacks that we can find to use. Secondly, it states what the E-Dixgal and how it affects the introduction of the project in the classroom. Finally, we see how being the introduction of digital books in relation to the area of Physical Education
From Newton to Mandelbrot a primer in theoretical physics with fractals for the Macintosh
Stauffer, Dietrich
1996-01-01
From Newton to Mandelbrot A Primer in Theoretical Physics with Fractals for the Macintosh ( ) takes the student on a tour of the most important landmarks of theoretical physics classical, quantum, and statistical mechanics, relativity, electrodynamics, and, the most modern and exciting of all, the physics of fractals The treatment is confined to the essentials of each area, and short computer programs, numerous problems, and beautiful color illustrations round off this unusual textbook Ideally suited for a one-year course in theoretical physics it will also prove useful in preparing and revising for exams This edition is corrected and includes a new appendix on elementary particle physics, answers to all short questions, and a Macintosh diskette where a selection of executable programs exploring the fractal concept can be found The Diskette The program FRACTAL DIMENSION can be used on any 68030-, 68040,- or PowerPC-based Macintosh with 4 Mb RAM and 256 color display running System 67 - 75 - Sierpinski gasket ...
Teaching theoretical physics: The cases of Enrico Fermi and Ettore Majorana
De Gregorio, Alberto; Esposito, Salvatore
2007-09-01
We report on theoretical courses by Enrico Fermi and Ettore Majorana, which give evidence of the first appearance and further development of quantum mechanics teaching in Italy. On the basis of original documents, we compare Fermi and Majorana's approaches. A detailed analysis is made of Fermi's course on theoretical physics attended by Majorana in 1927-28. Three (previously unknown) programs on advanced physics courses submitted by Majorana to the University of Rome between 1933 and 1936 and the course he taught in Naples in 1938 complete our analysis. Fermi's phenomenological approach resounded in Majorana, who combined it with a deeper theoretical approach, closer to the contemporary way of presenting quantum mechanics.
Theoretical investigation of chemical and physical properties of gaseous fuels
Energy Technology Data Exchange (ETDEWEB)
Hermann, Fredrik
1999-12-01
This thesis is discussing the chemical and physical properties of different gaseous fuels. A mapping of about seventy gaseous fuels resulted in eleven type gases, these gases have mainly five components (inerts, H{sub 2}, CO, CH{sub 4} and higher order of hydrocarbons) of different quantities. Calculations of heating value and Wobbe number have been done. Dew point temperatures have been estimated by using three different programs. Flammability limits, laminar flame speed and auto ignition temperatures have been calculated by using a kinetic and chemical program developed by Mauss. Flammability limits have been compared with Le Chatelier's law and measurements. Problems related to combustion such as flash back, lift off and instability are closely connected with flame speed and flow patterns. These problems are discussed in terms of laminar flame speed and Reynolds' number. The main results of this study were: Auto ignition temperature for gas mixtures behavior is very complex and unpredictable. In general small quantities of hydrogen decrease the temperature of auto ignition. The calculations of flammability limits by the kinetic and chemical software showed good agreement to measurements. Low Btu gases requires large flow area in order to avoid large pressure drop.
[Research in experimental and theoretical high energy physics
International Nuclear Information System (INIS)
Bodek, A.; Ferbel, T.; Melissinos, A.C.
1989-01-01
The Experimental High Energy Physics Program is directed toward the execution of experiments at both national and international accelerator facilities. During the next fiscal year, we will be primarily concentrating on the following projects: Fermilab direct photon experiment E706; Tevatron proton-antiproton collider experiment D-Zero; Analysis of Fermilab neutrino experiments and hadron experiment; Analysis of SLAC experiment E140 and all previous SLAC data; Running of the SLAC E140 extension (approved to run in 89/90); SLAC experiment NE11 (ran in 1989); Brookhaven galactic axion experiment; Coherent production of axions and Dellbruck scattering at BNL; The AMY experiment at TRISTAN; and Laser Switched LINAC at the Rochester Laser Laboratory. Projects which are in the completion stages: Search for new states of matter using the Rochester Tandem and SLAC experiment E141 Axion search. Projects in study and planning stages: Nonlinear Compton Scattering at LEP; Production of hybrid mesons in the nuclear coulomb field; Neutrino experiment for the Tevatron upgrade and the SSC; and Involvement in the CDF upgrade and the SSC
Theoretical Physics Division annual report (1 Sep 1981 - 31 Aug 1982)
International Nuclear Information System (INIS)
The Division of Theoretical Physics is organized in two groups, one oriented towards problems in nuclear physics and the other working on problems in particle physics. The fields of research can be summarized as follows: - in nuclear physics: systems with few nucleons, self-consistant calculations of nuclear properties, nuclear spectroscopy, nuclear physics at intermediate energies, weak interactions, nuclear reactions; - in particle physics: nucleon-nucleon scattering and the Paris potential, the nucleon-antinucleon interaction, dual topological unitarization and multiquark states, Gauge theories, covariant representations of classical systems, binding potentials derived from local relativistic wave equations, renormalization problems in quantum field theory [fr
Theoretical problems of plasma physics basic stages in fundamental physics of collisionless plasma
International Nuclear Information System (INIS)
Rukhadze, A.A.
2015-01-01
A short historical fundamental plasma physics development review where the main periods where determined by the physicists enumerated in the title is given. 1. I. Langmuir, who was the first to study experimentally the properties of plasmas, has found the main characteristics of plasma and has determined the conditions of plasma state realization. 2. L.D. Landau was the first to understand the reason of why is gas approximation not applicable for plasma description, but he neglected the self-consistent field and has not achieved his goal. 3. A.A. Vlasov showed the important role of self-consistent field and was the first to obtain the correct equation describing the plasma and also has put the Langmuir experiments on the observation of plasma waves and their dispersion on theoretical basis. 4. N.N. Bogolyubov developed the general method for derivation of the dynamic equations for plasma and showed that in the first approximation with respect to Landau parameter Vlasov equation is correct and the second approximation results in Landau corrective in the Vlasov equation. 5. G.V. Gordeev was the first to show that the acoustic vibration branch differs from the sound in gases, the sound in plasma is isothermal and exists only in nonisothermal plasmas. 6. B.B. Kadomtsev and V.P. Silin showed that undamped modes of ion-acoustic vibrations can exist in plasma and were the first to build the theory of plasma turbulence on the undamped Vlasov modes
Research in theoretical nuclear physics, Nuclear Theory Group. Progress report
International Nuclear Information System (INIS)
Brown, G.E.; Jackson, A.D.; Kuo, T.T.S.
1984-01-01
Primary emphasis is placed on understanding the nature of nucleon-nucleon and meson-nucleon interactions and on determining the consequences of such microscopic interactions in nuclear systems. We have constructed models of baryons which smoothly interpolate between currently popular bag and Skyrme models of hadrons and provide a vehicle for introducing the notions of quantum chromodynamics to low energy nuclear physics without violating the constraints of chiral invariance. Such models have been used to study the nucleon-nucleon interaction, the spectrum of baryons, and the important question of the radius of the quark bag. We have used many-body techniques to consider a variety of problems in finite nuclei and infinite many-body systems. New light has been shed on the nuclear coexistence of spherical and deformed states in the A = 18 region as well as the role of genuine three-body forces in this region. Phenomenological studies of infinite systems have led to a number of predictions particularly regarding the spin-polarized quantum liquids of current experimental interest. Microscopic many-body theories, based on the parquet diagrams, have been improved to a fully quantitative level for the ground state properties of infinite many-body systems. Finite temperature theories of nuclear matter, important in the study of heavy ion reactions, have been constructed. An expanded program in heavy ion theory has led to major advances in the multi-dimensional barrier penetration problem. Activities in nuclear astrophysics have provided a far more reliable description of the role of electron capture processes in stellar collapse. As a consequence, we have been able to perform legitimate calculations of the unshocked mass in Type II supernovae
Maximilien Brice
2006-01-01
Prof C. N. Yang (Physics Nobel Prize 1957) from Tsinghua University (Beijing) during his CERN Colloquium: "Thematic Melodies of Twentieth Century Theoretical Physics: Quantization, Symmetry and Phase Factor".
Theoretical Physics Division annual report, January--December 1975. Volume 1
International Nuclear Information System (INIS)
Wainwright, T.; Tarter, B.
1976-01-01
Discussions of theoretical work during this period are reported for the following general areas: (1) atomic, molecular, and nuclear physics, (2) laser fusion, propagation, and effects, (3) pulsed power and plasma physics, (4) energy and the environment, and (5) related research
Theoretical-research summer: For a new generation of experts on high energy physics
International Nuclear Information System (INIS)
Ramos-Sánchez, Saúl
2016-01-01
Motivated by the need to strengthen the comprehensive training of young Mexican physicists interested in theoretical high energy physics, the Theoretical-research summer on high energy physics program was conceived. This program, that celebrates its sixth anniversary, consists in a yearly, nationwide challenging contest in which a board of experts identify the best undergraduate contestants to support them during short research stays in high-energy- theory groups of prestigious international institutions. Out of 80 contestants, the eight awarded students have demonstrated their skills, producing highly advanced (and publicly available) reviews on particle physics, field theory, cosmology and string theory, and a published paper. (paper)
Theoretical training in physical education of higher educational establishments’ girl students
Directory of Open Access Journals (Sweden)
Y.V. Gordienko
2015-08-01
Full Text Available Purpose: testing and analysis of theoretical-methodic training of girl students at physical education classes. Material: in the research 45 2 nd year girl students of 18-19 age, participated. One group dealt with power-lifting and volleyball. Second group - practiced trainings by usual academic program. Results: it was found that girl students’ theoretical knowledge corresponds to middle level. It was also established that increase of motivation for acquiring and mastering knowledge facilitates effectiveness of physical education trainings’ construction. Conclusions: absence of physical education theoretical knowledge or its low level in girl students sharply reduces effectiveness of training and education, weakens interest to physical exercises’ and sports’ practicing.
Directory of Open Access Journals (Sweden)
Bellido MªLuisa
2011-07-01
Full Text Available Abstract Background Integrated delivery methods in healthcare systems have been proposed to confront the increasing complexity in general health care. INTERMED is an empirically derived, observer-rated instrument to measure case complexity. It was intended as a visualized, action-oriented decision-support tool for the early assessment of bio-psychosocial health risks and health needs. This study aims to document the reliability and applicability of the Spanish version of INTERMED in liver transplant patients. Methods Cross-sectional study of patients who had been included in the liver transplant waiting list. Two nurses interviewed the patients with INTERMED, and scored the instrument blind to each other. Kappa and w-kappa, Spearman, Kendall and intraclass correlation coefficients, and Cronbach's alfa were calculated. Results No patient refused the interview. Satisfactory coefficients were documented in most INTERMED items. Kappa was = 0.858 for the categorization of patients as "complex", and 21 of them (48.8% were classified in this category, and were considered to need integrated treatment. Conclusions The Spanish version of INTERMED is reliable. Its applicability in liver transplant patients adds to its generalizability.
Kompaneyets, A S
1962-01-01
Rigorous, systematic study by renowned physicist offers advanced students a thorough background in mechanics, electrodynamics, quantum mechanics, and statistical mechanics. Numerous exercises, many with complete solutions. 1961 edition.
Baumann, Gerd
2005-01-01
Mathematica for Theoretical Physics: Electrodynamics, Quantum Mechanics, General Relativity, and Fractals This second edition of Baumann's Mathematica® in Theoretical Physics shows readers how to solve physical problems and deal with their underlying theoretical concepts while using Mathematica® to derive numeric and symbolic solutions. Each example and calculation can be evaluated by the reader, and the reader can change the example calculations and adopt the given code to related or similar problems. The second edition has been completely revised and expanded into two volumes: The first volume covers classical mechanics and nonlinear dynamics. Both topics are the basis of a regular mechanics course. The second volume covers electrodynamics, quantum mechanics, relativity, and fractals and fractional calculus. New examples have been added and the representation has been reworked to provide a more interactive problem-solving presentation. This book can be used as a textbook or as a reference work, by student...
Basic course theoretical physics 5/2. Quantum mechanics - methods and applications. 7. upd. ed.
International Nuclear Information System (INIS)
Nolting, Wolfgang
2012-01-01
The favourite basic course theoretical physics covers in seven volumes all for the diploma and bachelor/master curricula decisive fields. Each volume mediates well considerably the theoretic-physical knowledge necessary in each semester. Numerous exercise problems with extended solutions serve for the deepening of the matter. The second part of the fifth volume deals with application and the extension of the concept of quantum mechanics developed in the first part. The present new edition contains some new problems, was worked out, and supplemented. It makes by the two-colour presentation a very distinct and fast access to the subject of teaching.
Basic course theoretical physics. Vol. 5/1. Quantum mechanics - foundations. 7. upd. ed.
International Nuclear Information System (INIS)
Nolting, Wolfgang
2009-01-01
The favoured basic course theoretical physics covers in seven volumes all fields relevant for the diploma. Each volume mediates well thought the in each semester necessary theoretically-physical tools. Numerous exercise problem with extensive solutions serve for the deepening of the matter. The first part of the fifth volume begins with an inductive foundation of quantum mechanics in order to illustrate after a study and summary of the formal foundations of quantum mechanics on simple model systems the concepts and term formations. The present new edition was fundamentally worked out and supplemented. The meanwhile proved two-color presentation allows a very understandable and fast approach to the matter [de
Activity report of the theoretical Physics Service. June 1988 to May 1989
International Nuclear Information System (INIS)
1990-01-01
The activity report of the theoretical Physics Service. (Nuclear Studies Center, Saclay, France) is presented. The research programs were carried out in the following fields: astrophysics, hadronic structure, nuclei microscopic calculus, nuclear collisions, basic interactions, general structural properties of the quantum physics concerning fields and particles, conformal invariance, statistical physics, disordered systems, magnetic correlations in supraconductors at high T C , phases of the quantum spin systems, classical aspects of quantum mechanics, physics of non-linear problems. Research programs are also developed in the fields of biology (membranes, proteins, neural systems), materials (stacking faults, rupture), and two-dimensional conformal invariance and quantum gravity [fr
Rebello, Carina M.; Rebello, N. Sanjay
2012-02-01
Previous studies have focused on the resources that students activate and utilize while solving a given physics problem. However, few studies explore how students relate a given resource such as an equation, to various types of physics problems and contexts and how they ascertain the meaning and applicability of that resource. We explore how students view physics equations, derive meaning from those equations, and use those equations in physics problem solving. We adapt Dubinsky and McDonald's description of APOS (action-process-object-schema) theory of learning in mathematics, to construct a theoretical framework that describes how students interpret and use equations in physics in terms of actions, processes, objects, and schemas. This framework provides a lens for understanding how students construct their understanding of physics concepts and their relation to equations. We highlight how APOS theory can be operationalized to serve as a lens for studying the use of mathematics in physics problem solving.
THE ROLE AND IMPORTANCE OF THEORETICAL PREPARATION ON “PHYSICAL EDUCATION FOR HIGHSCHOOL STUDENTS
Directory of Open Access Journals (Sweden)
DANIEL DOCU AXELERAD
2009-12-01
Full Text Available According to the pre-universitary curriculum, one of the criteria to asses the level of the subject’s acquisition is the quality of the theoretical knowledge. In the basic organizing documents of school physical education, there were and still are stipulated the exact requests regarding the necessary theoretical knowledge ofstudents on various education levels. According to these documents, the theoretical knowledge was general knowledge. To the general knowledge, there are added those pertaining to the basic information of the given subject, information about the means and methods of physical education, information from the domain of prophylactic physical education, etc. Special knowledge is that representing the students’ knowledge form various sports tests provided by the school curriculum, such as the sporting games (volleyball, basketball,football, handball, athletics (running, jumping, throwing and gymnastics (apparatus and floor exercises. It is here that the means and methods applied in acquiring the compartments listed above are attributed. In the special knowledge category there is also the knowledge related to the means, the forms and the methods to develop the basic motor qualities (force, speed, flexibility, resistance, skills, as well as the procedures for evaluating them.Nevertheless, regardless of the fact that in the physical education organizing normative documents, highschool included, it is provided that theoretical knowledge should be acquired, still there is no actual presentation of the specific requirements and the assessment criteria for the level of acquisition. No document specifies the ways to evaluate the volume and quality of acquiring the theoretical knowledge, which is why we are going to present here a detailed analysis of the level of acquisition of theoretical knowledge for the “Physical Education” subject by highschool students after applying the teaching –learning -evaluation technique on the
Lavignac, Stephan; Dalibard, Jean
2006-01-01
The Standard Model of elementary particles and interactions is one of the tested theories in physics. This book presents a collection of lectures given in August 2005 at the Les Houches Summer School on Particle Physics beyond the Standard Model. It provides a pedagogical introduction to the aspects of particle physics beyond the Standard Model
The theoretical minimum what you need to know to start doing physics
Susskind, Leonard
2013-01-01
In this unconventional and stimulating primer, world-class physicist Leonard Susskind and citizen-scientist George Hrabovsky combine forces to provide a brilliant first course in modern physics. Unlike most popular physics books - which give readers a taste of what physicists know but not what they actually do - Susskind and Hrabovsky teach the skills you need to do physics yourself. Combining crystal-clear explanations of the laws of the universe with basic exercises, the authors cover the minimum - the theoretical minimum of the title - that readers need to master in order to study more advanced topics. In a lucid, engaging style, they introduce all the key concepts, from classical mechanics to general relativity to quantum theory. Instead of shying away from the equations and maths that are essential to any understanding of physics, The Theoretical Minimum provides a toolkit that you won't find in any other popular science book.
A short course in quantum information theory an approach from theoretical physics
Diosi, Lajos
2011-01-01
This short and concise primer takes the vantage point of theoretical physics and the unity of physics. It sets out to strip the burgeoning field of quantum information science to its basics by linking it to universal concepts in physics. An extensive lecture rather than a comprehensive textbook, this volume is based on courses delivered over several years to advanced undergraduate and beginning graduate students, but essentially it addresses anyone with a working knowledge of basic quantum physics. Readers will find these lectures a most adequate entry point for theoretical studies in this field. For the second edition, the authors has succeeded in adding many new topics while sticking to the conciseness of the overall approach. A new chapter on qubit thermodynamics has been added, while new sections and subsections have been incorporated in various chapter to deal with weak and time-continuous measurements, period-finding quantum algorithms and quantum error corrections. From the reviews of the first edition...
Energy Technology Data Exchange (ETDEWEB)
Szczerbinska, Barbara [Dakota State Univ., Madison, SD (United States)
2016-02-22
For last five years Center for Theoretical Underground Physics and Related Areas (CETUP*) serves as a collaboration point for scientists from around the world interested in theoretical and experimental aspects of underground science. The mission of CETUP* is to promote an organized research in physics, astrophysics, geoscience, geomicrobiology and other fields related to the underground science and provide a stimulating environment for creative thinking and open communication between researches of varying ages and nationalities in dynamic atmosphere of intense scientific interactions. Scientists invited to participate in the program will not only provide theoretical support to the underground science, but they will also examine core questions of the 21st century including: What is dark matter? How well do we know the neutrino parameters?, How have neutrinos shaped the evolution of the universe?, How were the heavy elements made?, What are the fundamental underlying symmetries of the Universe? Is there a Grand Unified Theory of the Universe? How do supernovae explode? Studies of Neutrino Physics and Dark Matter are of high interest to particle and nuclear physicists, astrophysicists and cosmologists. Ongoing and proposed Neutrino and Dark Matter experiments are expected to unveil the answers to fundamental questions about the Universe. This year summer program was focused exactly on these subjects bringing together experts in dark matter, neutrino physics, particle physics, nuclear physics and astrophysics and cosmology. CETUP*2015 consisted of 5 week long program (June 14 – July 18, 2015) covering various theoretical and experimental aspects in these research areas. The two week long session on Dark Matter physics (June 14 – June 26) was followed by two week long program on Neutrino physics (July 6 – July 18). The international conference entitled IXth International Conference on Interconnection Between Particle Physics and Cosmology (PPC) was hosted at CETUP
[Experimental and theoretical high energy physics program]. [Purdue Univ. , West Lafayette, Indiana
Energy Technology Data Exchange (ETDEWEB)
Finley, J.; Gaidos, J.A.; Loeffler, F.J.; McIlwain, R.L.; Miller, D.H.; Palfrey, T.R.; Shibata, E.I.; Shipsey, I.P.
1993-04-01
Experimental and theoretical high-energy physics research at Purdue is summarized in a number of reports. Subjects treated include the following: the CLEO experiment for the study of heavy flavor physics; gas microstrip detectors; particle astrophysics; affine Kac[endash]Moody algebra; nonperturbative mass bounds on scalar and fermion systems due to triviality and vacuum stability constraints; resonance neutrino oscillations; e[sup +]e[sup [minus
Theoretical high energy physics research at the University of Chicago, Task A
International Nuclear Information System (INIS)
Rosner, J.L.; Martinec, E.J.; Sachs, R.G.
1992-04-01
This report discusses research conducted at the University of Chicago in theoretical high energy physics. Some of the areas included in this report are: cp violation and cabibbo-kobayashi-maskawa matrix; radiative corrections and electroweak observables; heavy quark symmetry; heavy meson spectroscopy; hadronic string theory; composite models of quarks and leptons; and pedagogical effects
Final Report May 1, 2012 to May 31, 2015: "Theoretical Studies in Elementary Particle Physics"
Energy Technology Data Exchange (ETDEWEB)
Collins, John C. [Pennsylvania State Univ., State College, PA (United States); Roiban, Radu [Pennsylvania State Univ., State College, PA (United States)
2015-08-19
This final report summarizes work at Penn State University from May 1, 2012 to May 31, 2015. The work was in theoretical elementary particle physics. Many new results in perturbative QCD, in string theory, and in related areas were obtained, with a substantial impact on the experimental program.
Barker, Dean; Wallhead, Tristan; Brock, Sheri; Goodyear, Victoria; Amade-Escot, Chantal
2017-01-01
Student group work is a central feature of many contemporary pedagogical approaches to teaching physical education. Despite this proliferation, our understanding of the teaching-learning dynamics inherent in group work remains limited and has tended to be under-theorized. The purpose of this paper was to examine different theoretical approaches to…
Carson, Russell L.; Chase, Melissa A.
2009-01-01
Background: The motivation of physical education (PE) teachers has received precious little attention over the years. Self-determination theory (SDT) is a salient theoretical model for understanding motivation, and posits that self-determined motivation (i.e., intrinsic motivation) stems from the perceived fulfillment of three psychological needs:…
International Nuclear Information System (INIS)
Leite Lopes, J.
1984-01-01
A report is given on the theoretical prediction and the experimental discovery of elementary particles from the electron to the weak intermediate vector bosons. The work of Lattes, Occhialini and Powell which put in evidence the pions predicted by Yukawa was the starting point of the modern experimental particle physics
High Energy Theory Workshops and Visitors at the Michigan Center for Theoretical Physics FY16
Energy Technology Data Exchange (ETDEWEB)
Pierce, Aaron [Univ. of Michigan, Ann Arbor, MI (United States)
2017-08-04
This award provided partial support for the Michigan Center for Theoretical Physics to host two workshops "Beyond the Standard Model 2016" in October 2016, and the "5th MCTP Symposium: Foundations of String Cosmology" in April 2017 on the University of Michigan campus.
High Energy Theory Workshops and Visitors at the Michigan Center for Theoretical Physics FY16
Energy Technology Data Exchange (ETDEWEB)
Pierce, Aaron [Univ. of Michigan, Ann Arbor, MI (United States)
2016-09-08
This award provided partial support for the Michigan Center for Theoretical Physics to host the 5-day workshop "Emergent themes in String Theory" this winter, March 15 - 19, 2016. on the University of Michigan campus. In addition, this award provided limited support for the Young High Energy Theorist (YHET) visitor program at the University of Michigan.
Directory of Open Access Journals (Sweden)
I.A. Tereshchenko
2013-12-01
Full Text Available Purpose - to examine the degree of relationship and interaction performance of semantic structure of motor action (level of theoretical preparation and indicators of sensomotor coordination (level of physical - motor - preparedness of students. The study involved 233 students (142 boys, 91 female aged 17 - 18 years. Were determined for sensory-motor coordination and academic performance of students, the factorial structure of the relationship indicators of theoretical and practical courses. It is established that the development of exercise training programs, sports and educational disciplines depends on the semantic structure of the motor action. It is noted that the semantic structure of the motor action is based on theoretical knowledge. Also - on perfecting the mechanisms of psychomotor and sensory-motor coordination. The parameters of the factor structure: the level of development of the vestibular apparatus - 25%; coordination abilities of - 18 %, static-dynamic stability of the body - 16%; proprioceptive sensitivity - 13%.
Energy Technology Data Exchange (ETDEWEB)
Field, R.D.; Ramond, P.M.; Sikivie, P.; Thorn, C.B.
1994-12-01
This is the Annual Progress Report of the theoretical particle theory group at the University of Florida under DOE Grant DE-FG05-86ER40272. At present our group consists of four Full Professors (Field, Ramond, Thorn, Sikivie), one Associate Professor (Woodard), and two Assistant Professors (Qiu, Kennedy). In addition, we have four postdoctoral research associates and seven graduate students. The research of our group covers a broad range of topics in theoretical high energy physics including both theory and phenomenology. Included in this report is a summary of the last several years, an outline of our current research program.
Under the spell of Landau when theoretical physics was shaping destinies
2013-01-01
This invaluable collection of memoirs and reviews on scientific activities of the most prominent theoretical physicists belonging to the Landau School - Landau, Anselm, Gribov, Zeldovich, Kirzhnits, Migdal, Ter-Martirosyan and Larkin - are being published in English for the first time. The main goal is to acquaint readers with the life and work of outstanding Soviet physicists who, to a large extent, shaped theoretical physics in the 1950s - 70s. Many intriguing details have remained unknown beyond the "Iron Curtain" which was dismantled only with the fall of the USSR.
International Nuclear Information System (INIS)
Field, R.D.; Ramond, P.M.; Sikivie, P.; Thorn, C.B.
1994-01-01
This is the Annual Progress Report of the theoretical particle theory group at the University of Florida under DOE Grant DE-FG05-86ER40272. At present our group consists of four Full Professors (Field, Ramond, Thorn, Sikivie), one Associate Professor (Woodard), and two Assistant Professors (Qiu, Kennedy). In addition, we have four postdoctoral research associates and seven graduate students. The research of our group covers a broad range of topics in theoretical high energy physics including both theory and phenomenology. Included in this report is a summary of the last several years, an outline of our current research program
Directory of Open Access Journals (Sweden)
Yamila García-Carrión
2016-09-01
Full Text Available The purpose of this paper was to reflex towards the foundations theoretical and historical of the professional pedagogical orientation process for the career physics from the senior high school, through which it has permitted to address the creation of practical proposals. For the transformation of the educative reality in the senior high school from the convergence of the professionals needs in this specialty in the territory and the needs and interest of the students in this educational level. From the theoretical point of view, we have awareness of the conception of the class as an interactive space for the mediatization of the relation of the students with the pedagogical profession.
Center for Theoretical Underground Physics and Related Areas - CETUP*2013 Summer Program
Energy Technology Data Exchange (ETDEWEB)
Szczerbinska, Barbara [Dakota State Univ., Madison, SD (United States)
2014-06-01
In response to an increasing interest in experiments conducted at deep underground facilities around the world, in 2010 the theory community has proposed a new initiative - a Center for Theoretical Underground Physics and Related Areas (CETUP*). The main goal of CETUP* is to bring together people with different talents and skills to address the most exciting questions in particle and nuclear physics, astrophysics, geosciences, and geomicrobiology. Scientists invited to participate in the program do not only provide theoretical support to the underground science, they also examine underlying universal questions of the 21^{st} century including: What is dark matter?, What are the masses of neutrinos?, How have neutrinos shaped the evolution of the universe?, How were the elements from iron to uranium made?, What is the origin and thermal history of the Earth? The mission of the CETUP* is to promote an organized research in physics, astrophysics, geoscience, geomicrobiology and other fields related to the underground science via individual and collaborative research in dynamic atmosphere of intense scientific interactions. Our main goal is to bring together scientists scattered around the world, promote the deep underground science and provide a stimulating environment for creative thinking and open communication between researches of varying ages and nationalities. CETUP*2014 included 5 week long program (June 24 – July 26, 2013) covering various theoretical and experimental aspects of Dark Matter, Neutrino Physics and Astrophysics. Two week long session focused on Dark Matter (June 24-July 6) was followed by two week long program on Neutrino Physics and Astrophysics (July 15-26). The VII^{th} International Conference on Interconnections between Particle Physics and Cosmology (PPC) was sandwiched between these sessions (July 8-13) covering the subjects of dark matter, neutrino physics, gravitational waves, collider physics and other from both
Center for Theoretical Underground Physics and Related Areas – CETUP*2016 Summer Program
Energy Technology Data Exchange (ETDEWEB)
Szczerbinska, Barbara [Texas A& M University Corpus Christi, Madison, SD (United States)
2017-02-15
For last six years Center for Theoretical Underground Physics and Related Areas (CETUP*) successfully provided a stimulating environment for creative thinking and open communication between researches of varying ages and nationalities in dynamic atmosphere of intense scientific interactions. Ongoing and proposed Neutrino and Dark Matter experiments are expected to unveil the answers to fundamental questions about the Universe. CETUP*2016 was focused exactly on these subjects bringing together experts in dark matter, neutrino physics, particle and nuclear physics, astrophysics and cosmology from around the world. Scientists invited to participate in the program not only provided theoretical support to the underground science, but they also examined core questions including: What is the nature of dark matter?, What is the origin of the neutrino masses?, How well do we know the neutrino parameters?, How have neutrinos shaped the evolution of the universe?, , What are the fundamental underlying symmetries of the Universe? Is there a Grand Unified Theory of the Universe? and many others. The 2016 CETUP* summer program consisted of three sessions (June 6 – July 16, 2016) covering various aspects of theoretical and experimental neutrino physics, unification and dark matter. The two week long session on Physics and Instrumentation of the Near Detector for the Long-Baseline Neutrino Experiments (June 6 – June 16) was followed by the two week long Neutrino Physics/Unification session: “From Grand Unification to String Theory and Back” (June 20 – July 2). The program ended with two week long session on Dark Matter Physics (July 4 – July 16). This six-week long program allowed for thorough discussions and an effective and comprehensive analysis of topics related to Dark Matter, Dark Energy, Neutrino Physics including astrophysical neutrinos, near and far detector physics, neutrino interactions, Higgs Boson, Inflation, Leptogenesis and many others that will advance
Theoretical Atomic Physics code development IV: LINES, A code for computing atomic line spectra
International Nuclear Information System (INIS)
Abdallah, J. Jr.; Clark, R.E.H.
1988-12-01
A new computer program, LINES, has been developed for simulating atomic line emission and absorption spectra using the accurate fine structure energy levels and transition strengths calculated by the (CATS) Cowan Atomic Structure code. Population distributions for the ion stages are obtained in LINES by using the Local Thermodynamic Equilibrium (LTE) model. LINES is also useful for displaying the pertinent atomic data generated by CATS. This report describes the use of LINES. Both CATS and LINES are part of the Theoretical Atomic PhysicS (TAPS) code development effort at Los Alamos. 11 refs., 9 figs., 1 tab
A short course in quantum information theory. An approach from theoretical physics. 2. ed.
International Nuclear Information System (INIS)
Diosi, Lajos
2011-01-01
This short and concise primer takes the vantage point of theoretical physics and the unity of physics. It sets out to strip the burgeoning field of quantum information science to its basics by linking it to universal concepts in physics. An extensive lecture rather than a comprehensive textbook, this volume is based on courses delivered over several years to advanced undergraduate and beginning graduate students, but essentially it addresses anyone with a working knowledge of basic quantum physics. Readers will find these lectures a most adequate entry point for theoretical studies in this field. For the second edition, the authors has succeeded in adding many new topics while sticking to the conciseness of the overall approach. A new chapter on qubit thermodynamics has been added, while new sections and subsections have been incorporated in various chapter to deal with weak and time-continuous measurements, period-finding quantum algorithms and quantum error corrections. From the reviews of the first edition: ''The best things about this book are its brevity and clarity. In around 100 pages it provides a tutorial introduction to quantum information theory, including problems and solutions.. it's worth a look if you want to quickly get up to speed with the language and central concepts of quantum information theory, including the background classical information theory.'' (Craig Savage, Australian Physics, Vol. 44 (2), 2007). (orig.)
International Nuclear Information System (INIS)
1987-01-01
The 32nd annual conference and the 22nd annual theoretical seminar of the South African Institute of Physics was held from 13-17 July 1987 at the University of Natal, Durban. This publication contains only the abstracts of seminars delivered on the conference. The topics that were covered include the various facets of physics such as solid state physics, nuclear and particle physics, optics and spectroscopy, solar-terrestrial physics, education, and applied and industial physics
International Nuclear Information System (INIS)
1986-01-01
The 31st annual conference and the 21st annual theoretical seminar of the South African Institute of Physics was held from 7-11 July 1986 at the Rand Afrikaans University, Johannesburg. This publication contains only the abstracts of seminars delivered on the conference. The topics that were covered include the various facets of physics such as solid state physics, nuclear and particle physics, optics and spectroscopy, solar-terrestrial physics, education, and applied and industrial physics
International Nuclear Information System (INIS)
1988-01-01
The 33rd annual conference and the 23rd annual theoretical seminar of the South African Institute of Physics was held from 4-8 July 1988 at Rhodes University, Grahamstown. This publication contains only the abstracts of seminars delivered on the conference. The topics that were covered include the various facets of physics such as solid state physics, nuclear and particle physics, optics and spectroscopy, solar-terrestrial physics, eduction, and applied and industrial physics
Theoretical nuclear physics in France: overview and perspectives - 2004 and 2009
International Nuclear Information System (INIS)
2004-11-01
A first report published in 2004 proposes an overview of the situation of research in theoretical nuclear physics in France per field of research: nucleus structure, nuclear reactions at low and medium energies (fusion, fission, multi fragmentation), hadron physics, state equation of nuclear matter and of neutron matter, and nuclear astrophysics, plasma of quarks and gluons, and nucleus-nucleus collisions at high energy, developments of the theory of the nuclear N-body problem and its impact on other disciplines. For each theme, the report indicates the involved research themes and their specific fields of research, comments the research themes, objectives and perspectives, discusses how the theoretical activity matches experimental programmes. The second report published in 2009 proposes the same kind of overview for the following themes: nucleus structure, state equation of nuclear and stellar matter, collisions and reactions at low and medium energy, hadron physics, quarks and gluons in nuclear physics, interdisciplinary applications of nuclear theory. Each report also provides some statistics about the researcher community
Analyste intermédiaire de l'infrastructure | CRDI - Centre de ...
International Development Research Centre (IDRC) Digital Library (Canada)
Résumé des fonctions. Sous la supervision du gestionnaire, Infrastructure, sécurité et documents – DGITI, l'analyste intermédiaire de l'infrastructure joue un rôle essentiel dans la prestation des services (à titre de membre de l'équipe Infrastructure, sécurité et documents [ISD] chargée du fonctionnement et de la ...
Nomura, Yasunori; Terning, John; Nekoogar, Farzad
2018-01-01
"Modern physics is rife with provocative and fascinating ideas, from quantum mechanics to the multiverse. But as interesting as these concepts are, they are also easy to understand. This book, written with deft hands by true experts in the field, helps to illuminate some of the most important and game-changing ideas in physics today." Sean M. Carroll "The Multiversal book series is equally unique, providing book-length extensions of the lectures with enough additional depth for those who truly want to explore these fields, while also providing the kind of clarity that is appropriate for interested lay people to grasp the general principles involved. " Lawrence M. Krauss Th...
Sieroka, Norman
2018-02-01
This paper aims at closing a gap in recent Weyl research by investigating the role played by Leibniz for the development and consolidation of Weyl's notion of theoretical (symbolic) construction. For Weyl, just as for Leibniz, mathematics was not simply an accompanying tool when doing physics-for him it meant the ability to engage in well-guided speculations about a general framework of reality and experience. The paper first introduces some of the background of Weyl's notion of theoretical construction and then discusses particular Leibnizian inheritances in Weyl's 'Philosophie der Mathematik und Naturwissenschaft', such as the general appreciation of the principles of sufficient reason and of continuity. Afterwards the paper focuses on three themes: first, Leibniz's primary quality phenomenalism, which according to Weyl marked the decisive step in realizing that physical qualities are never apprehended directly; second, the conceptual relation between continuity and freedom; and third, Leibniz's notion of 'expression', which allows for a certain type of (surrogative) reasoning by structural analogy and which gave rise to Weyl's optimism regarding the scope of theoretical construction.
Report of the Subpanel on Theoretical Computing of the High Energy Physics Advisory Panel
International Nuclear Information System (INIS)
1984-09-01
The Subpanel on Theoretical Computing of the High Energy Physics Advisory Panel (HEPAP) was formed in July 1984 to make recommendations concerning the need for state-of-the-art computing for theoretical studies. The specific Charge to the Subpanel is attached as Appendix A, and the full membership is listed in Appendix B. For the purposes of this study, theoretical computing was interpreted as encompassing both investigations in the theory of elementary particles and computation-intensive aspects of accelerator theory and design. Many problems in both areas are suited to realize the advantages of vectorized processing. The body of the Subpanel Report is organized as follows. The Introduction, Section I, explains some of the goals of computational physics as it applies to elementary particle theory and accelerator design. Section II reviews the availability of mainframe supercomputers to researchers in the United States, in Western Europe, and in Japan. Other promising approaches to large-scale computing are summarized in Section III. Section IV details the current computing needs for problems in high energy theory, and for beam dynamics studies. The Subpanel Recommendations appear in Section V. The Appendices attached to this Report give the Charge to the Subpanel, the Subpanel membership, and some background information on the financial implications of establishing a supercomputer center
Energy Technology Data Exchange (ETDEWEB)
1992-10-01
Progress in the various components of the UCLA High-Energy Physics Research program is summarized, including some representative figures and lists of resulting presentations and published papers. Principal efforts were directed at the following: (I) UCLA hadronization model, PEP4/9 e{sup +}e{sup {minus}} analysis, {bar P} decay; (II) ICARUS and astroparticle physics (physics goals, technical progress on electronics, data acquisition, and detector performance, long baseline neutrino beam from CERN to the Gran Sasso and ICARUS, future ICARUS program, and WIMP experiment with xenon), B physics with hadron beams and colliders, high-energy collider physics, and the {phi} factory project; (III) theoretical high-energy physics; (IV) H dibaryon search, search for K{sub L}{sup 0} {yields} {pi}{sup 0}{gamma}{gamma} and {pi}{sup 0}{nu}{bar {nu}}, and detector design and construction for the FNAL-KTeV project; (V) UCLA participation in the experiment CDF at Fermilab; and (VI) VLPC/scintillating fiber R & D.
Energy Technology Data Exchange (ETDEWEB)
Field, R.D.; Ramond, P.M.; Sikivie, P.; Thorn, C.B.
1993-11-01
This is the Annual Progress Report of the theoretical particle theory group at the University of Florida under DoE Grant DE-FG05-86ER40272. At present our group consists of four Full Professors (Field, Ramond, Thorn, Sikivie) and three Assistant Professors (Qiu, Woodard, Kennedy). Dallas Kennedy recently joined our group increasing the Particle Theory faculty to seven. In addition, we have three postdoctoral research associates, an SSC fellow, and eight graduate students. The research of our group covers a broad range of topics in theoretical high energy physics with balance between theory and phenomenology. Included in this report is a summary of the last several years of operation of the group and an outline of our current research program.
Theoretical Studies of Alfven Waves and Energetic Particle Physics in Fusion Plasmas
Energy Technology Data Exchange (ETDEWEB)
Chen, Liu [Univ. of California, Irvine, CA (United States)
2017-12-20
This report summarizes major theoretical findings in the linear as well as nonlinear physics of Alfvén waves and energetic particles in magnetically confined fusion plasmas. On the linear physics, a variational formulation, based on the separation of singular and regular spatial scales, for drift-Alfvén instabilities excited by energetic particles is established. This variational formulation is then applied to derive the general fishbone-like dispersion relations corresponding to the various Alfvén eigenmodes and energetic-particle modes. It is further employed to explore in depth the low-frequency Alfvén eigenmodes and demonstrate the non-perturbative nature of the energetic particles. On the nonlinear physics, new novel findings are obtained on both the nonlinear wave-wave interactions and nonlinear wave-energetic particle interactions. It is demonstrated that both the energetic particles and the fine radial mode structures could qualitatively affect the nonlinear evolution of Alfvén eigenmodes. Meanwhile, a theoretical approach based on the Dyson equation is developed to treat self-consistently the nonlinear interactions between Alfvén waves and energetic particles, and is then applied to explain simulation results of energetic-particle modes. Relevant list of journal publications on the above findings is also included.
Multiplication of distributions a tool in mathematics, numerical engineering and theoretical physics
Colombeau, Jean François
1992-01-01
This book presents recent and very elementary developments of a theory of multiplication of distributions in the field of explicit and numerical solutions of systems of PDEs of physics (nonlinear elasticity, elastoplasticity, hydrodynamics, multifluid flows, acoustics). The prerequisites are kept to introductory calculus level so that the book remains accessible at the same time to pure mathematicians (as a smoothand somewhat heuristic introdcution to this theory) and to applied mathematicians, numerical engineers and theoretical physicists (as a tool to treat problems involving products of distributions).
Understanding rapid theoretical change in particle physics: a month-by-month co-citation analysis
International Nuclear Information System (INIS)
Sullivan, D.; Koester, D.; White, D.H.; Kern, R.
1979-01-01
While co-citation analysis has proved a powerful tool in the study of changes in intellectual foci in science, no one has ever used the technique to study very rapid changes in the theoretical structure of a scientific field. This paper presents month-by-month co-citation analyses of key phases in the weak-electromagnetic unification research program within particle physics, and shows that these analyses capture and illuminate very rapid intellectual changes. These data provide yet another illustration of the utility of co-citation analysis for understanding the history of science. 8 figures
Theoretical atomic physics code development I: CATS: Cowan Atomic Structure Code
International Nuclear Information System (INIS)
Abdallah, J. Jr.; Clark, R.E.H.; Cowan, R.D.
1988-12-01
An adaptation of R.D. Cowan's Atomic Structure program, CATS, has been developed as part of the Theoretical Atomic Physics (TAPS) code development effort at Los Alamos. CATS has been designed to be easy to run and to produce data files that can interface with other programs easily. The CATS produced data files currently include wave functions, energy levels, oscillator strengths, plane-wave-Born electron-ion collision strengths, photoionization cross sections, and a variety of other quantities. This paper describes the use of CATS. 10 refs
Studies of Credit and Equity Markets with Concepts of Theoretical Physics
Münnix, Michael C
2011-01-01
Financial markets are becoming increasingly complex. The financial crisis of 2008 to 2009 has demonstrated that an improved understanding of the mechanisms embedded in the market is a key requirement for the estimation of financial risk. Recently, concepts of theoretical physics, in particular concepts of complex systems, have proven to be very useful in this regard. Michael C. Münnix analyses the statistical dependencies in financial markets and develops mathematical models using concepts and methods from physics. The author focuses on aspects that played a key role in the emergence of the recent financial crisis: estimation of credit risk, dynamics of statistical dependencies, and correlations on small time-scales. He visualizes the findings for various large-scale empirical studies of market data. The results give novel insights into the mechanisms of financial markets and allow conclusions on how to reduce financial risk significantly.
2013-01-01
In mathematics and physics, a soliton is a self-reinforcing solitary wave (a wave packet or pulse) that maintains its shape while it travels at constant speed. Solitons are caused by a cancellation of non-linear and dispersive effects in the medium. In this book, the authors discuss the interactions and theoretical and experimental challenges of solitons. Topics include soliton motion of electrons and its physical properties in coupled electron-phonon systems and ionic crystals; soliton excitations and its experimental evidence in molecular crystals; shapes and dynamics of semi-discrete solitons in arrayed and stacked waveguiding systems; ion-acoustic super solitons in plasma; diamond-controlled solitons and turbulence in extracellular matrix and lymphatic dynamics; and non-linear waves in strongly interacting relativistic fluids.
New Editor-in-Chief for Journal of Physics A: Mathematical and Theoretical
Gillan, Rebecca
2014-04-01
We are delighted to announce that Professor Martin Evans of University of Edinburgh has been appointed as the new Editor-in-Chief of Journal of Physics A: Mathematical and Theoretical. Martin Evans has been Editor of the Statistical Physics section of the journal since 2009. Prior to this, he served as a Board Member for the journal. His areas of research include statistical mechanics of nonequilibrium systems, phase transitions and scaling regimes in nonequilibrium statistical physics, glassy dynamics, phase transitions and ordering in driven diffusive systems, mass transport models, condensation models, zero range processes and exclusion processes. We very much look forward to working with Martin to continue to improve the journal's quality and interest to the readership. We would like to thank our outgoing Editor-in-Chief, Professor Murray Batchelor. Murray has worked hard and provided excellent guidance in improving the quality of the journal and the service that the journal provides to authors, referees and readers. During the last five years, we have raised the quality threshold for acceptance in the journal and currently reject over 70% of submissions. As a result, papers published in Journal of Physics A: Mathematical and Theoretical are amongst the best in the field. We have also maintained and improved on our excellent receipt-to-first-decision times, which now average under 40 days for papers. With the help of Martin Evans and our distinguished Editorial Board, we will be working to further improve the quality of the journal whilst continuing to offer excellent services to our readers, authors and referees. We hope that you benefit from reading the journal. If you have any comments or questions, please do not hesitate to contact us at jphysa@iop.org. Rebecca Gillan Publisher
Energy Technology Data Exchange (ETDEWEB)
Heusler, Stefan [Duisburg-Essen University, 47057 Duisburg (Germany)
2006-12-08
The main focus of the second, enlarged edition of the book Mathematica for Theoretical Physics is on computational examples using the computer program Mathematica in various areas in physics. It is a notebook rather than a textbook. Indeed, the book is just a printout of the Mathematica notebooks included on the CD. The second edition is divided into two volumes, the first covering classical mechanics and nonlinear dynamics, the second dealing with examples in electrodynamics, quantum mechanics, general relativity and fractal geometry. The second volume is not suited for newcomers because basic and simple physical ideas which lead to complex formulas are not explained in detail. Instead, the computer technology makes it possible to write down and manipulate formulas of practically any length. For researchers with experience in computing, the book contains a lot of interesting and non-trivial examples. Most of the examples discussed are standard textbook problems, but the power of Mathematica opens the path to more sophisticated solutions. For example, the exact solution for the perihelion shift of Mercury within general relativity is worked out in detail using elliptic functions. The virial equation of state for molecules' interaction with Lennard-Jones-like potentials is discussed, including both classical and quantum corrections to the second virial coefficient. Interestingly, closed solutions become available using sophisticated computing methods within Mathematica. In my opinion, the textbook should not show formulas in detail which cover three or more pages-these technical data should just be contained on the CD. Instead, the textbook should focus on more detailed explanation of the physical concepts behind the technicalities. The discussion of the virial equation would benefit much from replacing 15 pages of Mathematica output with 15 pages of further explanation and motivation. In this combination, the power of computing merged with physical intuition
Energy Technology Data Exchange (ETDEWEB)
1977-01-01
The accomplishments in basic research in nuclear physics carried out by the theoretical nuclear physics group of the Department of Physics of the University of Texas at Austin during the period January 1, 1976, to December 31, 1976, are described. Most of the work has already been published, or soon will be. 26 figures. (RWR)
Progress report for a research program in theoretical high-energy physics
International Nuclear Information System (INIS)
Feldman, D.; Fried, H.M.; Jevicki, A.; Kang, K.; Tan, C.I.
1983-01-01
This year research has dealt with a wide range of topics in High-Energy Theoretical Physics. New results have been reached in: geometric structures of symmetry breaking, contracted symmetry groups; continuum strong-coupling methods, fermions in the quenched approximation, treatment of isotopic (color) degrees of freedom, field-theoretic methods for turbulence; axioms and the naturalness of the U(1) symmetry, automatic and color anomalous U(1) symmetries, monopoles and constraints on grand unified model; numerical methods for large N theories, loop-space dynamics, quantum gravity, duality transformations in -models and supergravity; the physical basis of the Adler-Bell-Jackiw anomaly, continuum limit of quantum lattice gravity; electron localization in external magnetic fields; large N phase diagrams and universality, variational methods for studying phase transitions in lattice gauge theories, large-N QCD with matter fields present; valence approximation to lattice QCD, Monte-Carlo evaluation of hadron masses. Much effort has been expended by the members of our group in numerical, computer-augmented calculations, and large-N gauge theories, lattice QCD, fermions and chiral-symmetry breaking. New areas such as quantum gravity, supergravity, and supersymmetry have also geen approached
Shirazipour, Celina H; Baillie, Colin P T; Galaviz, Karla; Jarvis, Jocelyn W; Latimer-Cheung, Amy E
2015-01-01
Physical activity can aid people with multiple sclerosis (MS) in managing symptoms and maintaining functional abilities. The Internet is a preferred source of physical activity information for people with MS and, therefore, a method for the dissemination of behavior change techniques. The purpose of this study was to examine the coverage and quality of physical activity behavior change techniques delivered on the Internet for adults with MS using Abraham and Michie's taxonomy of behavior change techniques. Using the taxonomy, 20 websites were coded for quality (ie, accuracy of information) and coverage (ie, completeness of information) of theoretical behavior change techniques. RESULTS indicated that most websites covered a mean of 8.05 (SD 3.86, range 3-16) techniques out of a possible 20. Only one of the techniques, provide information on behavior-health link and consequences, was delivered on all websites. The websites demonstrated low mean coverage and quality across all behavior change techniques, with means of 0.64 (SD 0.67) and 0.62 (SD 0.37) on a scale of 0 to 2, respectively. However, coverage and quality improved when websites were examined solely for the techniques that they covered, as opposed to all 20 techniques. This study, which examined quality and coverage of physical activity behavior change techniques described online for people with MS, illustrated that the dissemination of these techniques requires improvement.
Theoretical studies in nuclear physics. Three year progress report and final report
International Nuclear Information System (INIS)
Landau, R.H.; Madsen, V.A.
1996-01-01
In 1995 the DOE grant in Nuclear theory with Professors Rubin H. Landau and Victor A. Madsen as co-principal investigators ended. Their research was carried out in collaboration with graduate students in Corvallis, and with scientists at LLNL-Livermore, Los Alamos, TRIUMF, KFA-Julich, Hamburg University, Melbourne University, The Thinking Machine Corporation and IBM Research. Activities in nuclear and particle physics at Oregon State University (OSU) were diverse and active. Madsen's work concentrated on the relation of reactions to the nuclear structure, and Landau's work concentrated on intermediate energy physics, few-body problems, and computational physics. The Landau group had a weekly meeting of students and visitors. There was a weekly nuclear seminar with experimental and theoretical colleagues, and a weekly departmental colloquium. The DOE support had permitted the group to run Unix workstations networked to other computers in the Physics Department and the University. Since 1990 OSU has been using IBM RISC System 6000/model 530 with console and four X-stations. The equipment was purchased and is maintained with yearly DOE funding of the group
The University of Virginia Experimental and Theoretical High Energy Physics Closeout Report
Energy Technology Data Exchange (ETDEWEB)
Principal Investigator: Harry B. Thacker
2012-08-13
The work covered in this report includes a joint project on using gauge-gravity duality to discover qualitatively new results on jet quenching in strongly-coupled QCD-like plasmas. Other topics addressed by the theoretical work include jet stopping and energy loss in weakly-coupled plasmas, perturbative QCD amplitudes, AdS/CMT, dynamical electroweak symmetry breaking with a heavy fourth generation, electroweak-scale {nu}{sub R} model, vacuum topological structure and chiral dynamics in strongly coupled gauge theory. Effort committed to the CMS experiment is reported, particularly the management, maintenance, operation and upgrade of the CMS electromagnetic detector (ECAL). Activities in various physics analyses including Supersymmetry, Higgs, Top, and QCD analyses are reported. Physics projects covering wide areas of physics at the LHC are reported. CY2010 saw the accumulation of a data sample corresponding to approximately 36 pb{sup -1}; in CY 2011 the data sample swelled to more than 5 fb{sup -1}. The UVa CMS analysis efforts are focused on this large 2011 data sample in a suite of crucial measurements and searches. KTeV physics activities are reported. Efforts are reported pertaining to several experiments, including: HyperCP, CKM, MIPP, D, NO {nu}A, and Mu2e.
Energy Technology Data Exchange (ETDEWEB)
Horowitz, C J; Macfarlane, M H; Matsui, T; Serot, B D
1993-01-01
A proposal for theoretical nuclear physics research is made for the period April 1, 1993 through March 31, 1996. Research is proposed in the following areas: relativistic many-body theory of nuclei and nuclear matter, quasifree electroweak scattering and strange quarks in nuclei, dynamical effects in (e,e[prime]p) scattering at large momentum transfer, investigating the nucleon's parton sea with polarized leptoproduction, physics of ultrarelativistic nucleus[endash]nucleus collisions, QCD sum rules and hadronic properties, non-relativistic models of nuclear reactions, and spin and color correlations in a quark-exchange model of nuclear matter. Highlights of recent research, vitae of principal investigators, and lists of publications and invited talks are also given. Recent research dealt primarily with medium-energy nuclear physics, relativistic theories of nuclei and the nuclear response, the nuclear equation of state under extreme conditions, the dynamics of the quark[endash]gluon plasma in relativistic heavy-ion collisions, and theories of the nucleon[endash]nucleon force.
Neitzke, Kurt W.; Guerreiro, Nelson M.
2014-01-01
A design study was completed to explore the theoretical physical capacity (TPC) of the John F. Kennedy International Airport (KJFK) runway system for a northflow configuration assuming impedance-free (to throughput) air traffic control functionality. Individual runways were modeled using an agent-based, airspace simulation tool, the Airspace Concept Evaluation System (ACES), with all runways conducting both departures and arrivals on a first-come first-served (FCFS) scheduling basis. A realistic future flight schedule was expanded to 3.5 times the traffic level of a selected baseline day, September 26, 2006, to provide a steady overdemand state for KJFK runways. Rules constraining departure and arrival operations were defined to reflect physical limits beyond which safe operations could no longer be assumed. Safety buffers to account for all sources of operational variability were not included in the TPC estimate. Visual approaches were assumed for all arrivals to minimize inter-arrival spacing. Parallel runway operations were assumed to be independent based on lateral spacing distances. Resulting time intervals between successive airport operations were primarily constrained by same-runway and then by intersecting-runway spacing requirements. The resulting physical runway capacity approximates a theoretical limit that cannot be exceeded without modifying runway interaction assumptions. Comparison with current KJFK operational limits for a north-flow runway configuration indicates a substantial throughput gap of approximately 48%. This gap may be further analyzed to determine which part may be feasibly bridged through the deployment of advanced systems and procedures, and which part cannot, because it is either impossible or not cost-effective to control. Advanced systems for bridging the throughput gap may be conceptualized and simulated using this same experimental setup to estimate the level of gap closure achieved.
Directory of Open Access Journals (Sweden)
Michaud L
2016-12-01
Full Text Available Background: Lack of adherence to medication is a trigger of graft rejection in solid-organ transplant (SOT recipients. Objective: This exploratory study aimed to assess whether a biopsychosocial evaluation using the INTERMED instrument before transplantation could identify SOT recipients at risk of suboptimal post-transplantation adherence to immunosuppressant drugs. We hypothesized that complex patients (INTERMED>20 might have lower medication adherence than noncomplex patients (INTERMED≤20. Methods: Each patient eligible for transplantation at the University Hospital of Lausanne, Switzerland, has to undergo a pre-transplantation psychiatric evaluation. In this context the patient was asked to participate in our study. The INTERMED was completed pre-transplantation, and adherence to immunosuppressive medication was monitored post-transplantation by electronic monitors for 12 months. The main outcome measure was the implementation and persistence to two calcineurin inhibitors, cyclosporine and tacrolimus, according to the dichotomized INTERMED score (>20 or ≤20. Results: Among the 50 SOT recipients who completed the INTERMED, 32 entered the study. The complex (N=11 and noncomplex patients (N=21 were similar in terms of age, sex and transplanted organ. Implementation was 94.2% in noncomplex patients versus 87.8% in complex patients (non-significant p-value. Five patients were lost to follow-up: one was non-persistent, and four refused electronic monitoring. Of the four patients who refused monitoring, two were complex and withdrew early, and two were noncomplex and withdrew later in the study. Conclusion: Patients identified as complex pre-transplant by the INTERMED tended to deviate from their immunosuppressant regimen, but the findings were not statistically significant. Larger studies are needed to evaluate this association further, as well as the appropriateness of using a nonspecific biopsychosocial instrument such as INTERMED in highly
Transmedia storytelling in the NGO communication. Sí me importa by Oxfam Intermón
Directory of Open Access Journals (Sweden)
Laura MARTÍNEZ VALERO
2016-12-01
Full Text Available Traditionally, transmedia storytelling has been used for spreading fiction narrative worlds, such as films and TV series. However, it was a matter of time that its ability for explaining the reality was discovered and utilised by social organizations to explain their causes and to reach new audiences. Moreover, the new mobile environment challenges the creativity of the organizations to develop products that make use of this new form of consumption. The Sí me importa campaign, a transmedia project of the Spanish NGO Oxfam Intermón, reclaimed the importance of the in-ternational cooperation through social networks, comic, theatre, contemporary art and cinema.
Defense of Cyber Infrastructures Against Cyber-Physical Attacks Using Game-Theoretic Models.
Rao, Nageswara S V; Poole, Stephen W; Ma, Chris Y T; He, Fei; Zhuang, Jun; Yau, David K Y
2016-04-01
The operation of cyber infrastructures relies on both cyber and physical components, which are subject to incidental and intentional degradations of different kinds. Within the context of network and computing infrastructures, we study the strategic interactions between an attacker and a defender using game-theoretic models that take into account both cyber and physical components. The attacker and defender optimize their individual utilities, expressed as sums of cost and system terms. First, we consider a Boolean attack-defense model, wherein the cyber and physical subinfrastructures may be attacked and reinforced as individual units. Second, we consider a component attack-defense model wherein their components may be attacked and defended, and the infrastructure requires minimum numbers of both to function. We show that the Nash equilibrium under uniform costs in both cases is computable in polynomial time, and it provides high-level deterministic conditions for the infrastructure survival. When probabilities of successful attack and defense, and of incidental failures, are incorporated into the models, the results favor the attacker but otherwise remain qualitatively similar. This approach has been motivated and validated by our experiences with UltraScience Net infrastructure, which was built to support high-performance network experiments. The analytical results, however, are more general, and we apply them to simplified models of cloud and high-performance computing infrastructures. © 2015 Society for Risk Analysis.
MPC and A upgrades at the Institute of Theoretical and Experimental Physics (ITEP)
International Nuclear Information System (INIS)
Haase, M.; Smarto, C.; Baumann, M.
1998-01-01
Materials Protection, Control and Accounting (MPC and A) equipment upgrades are complete at the Institute of Theoretical and Experimental Physics (ITEP), a site that has significant quantities of weapons-potential nuclear materials. Cooperative work was initiated at this Moscow facility as a part of the US-Russian program to upgrade MPC and A systems. An initial site visit and assessment were conducted in September 1996 to establish communication between ITEP, the US Department of Energy (DOE), and participating US National Laboratories. Subsequently, an agreement was reached to develop two master plans for MPC and A upgrades. Los Alamos National Laboratory (LANL) and Oak Ridge National Laboratory (ORNL) assisted in developing a plan for Material Control and Accounting (MC and A) upgrades, and Sandia National Laboratories (SNL) assisted in developing a plan for Physical Protection System (PPS) upgrades. The MC and A plan included MC and A training, a mass measurement program, nondestructive assay instrumentation, item identification (bar coding), physical inventory taking, portal and hand-held nuclear material monitors, and a nuclear materials accounting system. The PPS plan included basic PPS design training, Central Alarm Station (CAS) relocation and equipment upgrades, a site and critical-building access control system, intrusion detection, alarm assessment, and guard force communications
New theoretical development for the calculating of physical properties of D2O
International Nuclear Information System (INIS)
Moreira, Osvaldo
2011-01-01
In this work we have developed a new method for calculating the physical properties of heavy water, D 2 O, using the Helmholtz free energy state function, A = U − T S, exclusively for this molecule. The state function has been calculated as ā = ā 0 +ā 1 (specific dimensionless values), where ā 0 is related to the properties of heavy water in gaseous state and ā 1 describes the liquid state. The canonical variables of the state function are absolute temperature and volume. To calculate the physical properties defining absolute pressure and temperature, here a variable change method was developed, based on the solution of a differential equation (function ζ) using numerical algorithms (scaling and Newton-Raphson). Physical quantities calculated are: density ϱ(specific volume υ), specific enthalpy h and entropy s. The results obtained agree completely with the values calculated by the National Institute of Standards and Technology (NIST). In this report it has also proposed an adjustment function to calculate the saturation absolute temperature of heavy water as a function of the pressure: T s (p) = exp[a·b(p)], where a is a vector of constant coefficients and b a vector function of pressure, using theoretical values and extending the wording proposed by the Oak Ridge National Laboratory. The new setting has an error less than 0.03%. (author)
Amusia, Miron Ya; Yarzhemsky, Victor
2012-01-01
The aim of this book is to present highly accurate and extensive theoretical Atomic data and to give a survey of selected calculational methods for atomic physics, used to obtain these data. The book presents the results of calculations of cross sections and probabilities of a broad variety of atomic processes with participation of photons and electrons, namely on photoabsorption, electron scattering and accompanying effects. Included are data for photoabsorption and electron scattering cross-sections and probabilities of vacancy decay formed for a large number of atoms and ions. Attention is also given to photoionization and vacancy decay in endohedrals and to positron-atom scattering. The book is richly illustrated. The methods used are one-electron Hartree-Fock and the technique of Feynman diagrams that permits to include many-electron correlations. This is done in the frames of the Random Phase approximation with exchange and the many-body perturbation theory. Newly obtained and previously collected atomi...
International Nuclear Information System (INIS)
Brandenberger, R.; Cutts, D.; Fried, H.M.; Guralnik, G.; Jevicki, A.; King, K.; Lanou, R.E.; Partridge, R.; Tan, C.I.; Widgoff, M.
1992-01-01
This report discusses research at Brown University in experimental and theoretical high energy physics. Some of the research programs conducted are: interactions of leptons and hadrons form accelerator and astrophysical sources; hadron interactions with hydrogen and heavier nuclei; large volume detector at the Gran Sasso Laboratory; GEM collaboration at SSC; and hadron colliders and neutrino physics
International Nuclear Information System (INIS)
Lopez Diaz, A.; Gonzalez, G.J.; Torres, A.L.; Fraxedas, M.R.
2007-01-01
Full text: Using national and international recommendations about human resource in Nuclear Medicine, a group of experts organized a National Course for the education and training of physicist who work in Cuban hospitals, adapted to national condition and practice of Nuclear Medicine. The program was approved for National Authorities in Nuclear Security and University Schools in Medicine. The program contains two intensive theoretic and practical courses, to be completed over a period of 15 days of full time engagement, complemented with 4 month full attachment to a Nuclear Medicine Service monitored by accredited expert. The theoretical/practical intensive courses have final evaluation: combining practical exercise and a final test. When all docent activities finish the students should clear a final theoretical/practical evaluation by an examination board comprising of at least three accredited experts. The theoretical/practical courses were attended by 19 physicists working in hospitals in Cuba. The contents of the first course included, Introduction to Nuclear Medicine, Principle of NM equipment, Quality assurance and quality control of NM equipment, Radiation Protection and Licence Topics of NM Services. The second course had the following topics: Acquisition and Processing methods in Nuclear Medicine, Nuclear Medicine Techniques and Clinical Dosimetry for radiopharmaceutical therapy. With 100 point of maximum score and 60 point minimum to pass, the final test of this first course comprised of 2 types of questions: 1 Multiple choice questions and 2. long essay type questions. The average scores obtained by the participants was 87.02 points/ students (range 65- 100 points). The students pass the test with very good degree of comprehension: 10-Excellent (90-100 points), 5- Very good (80-89 points), 2-Good (70-79 point) and 2- satisfactory standard (60-69 point). The students evaluated 'satisfactory' the quality of the course (in anonymous poll), reporting like
International Nuclear Information System (INIS)
Heusler, Stefan
2006-01-01
The main focus of the second, enlarged edition of the book Mathematica for Theoretical Physics is on computational examples using the computer program Mathematica in various areas in physics. It is a notebook rather than a textbook. Indeed, the book is just a printout of the Mathematica notebooks included on the CD. The second edition is divided into two volumes, the first covering classical mechanics and nonlinear dynamics, the second dealing with examples in electrodynamics, quantum mechanics, general relativity and fractal geometry. The second volume is not suited for newcomers because basic and simple physical ideas which lead to complex formulas are not explained in detail. Instead, the computer technology makes it possible to write down and manipulate formulas of practically any length. For researchers with experience in computing, the book contains a lot of interesting and non-trivial examples. Most of the examples discussed are standard textbook problems, but the power of Mathematica opens the path to more sophisticated solutions. For example, the exact solution for the perihelion shift of Mercury within general relativity is worked out in detail using elliptic functions. The virial equation of state for molecules' interaction with Lennard-Jones-like potentials is discussed, including both classical and quantum corrections to the second virial coefficient. Interestingly, closed solutions become available using sophisticated computing methods within Mathematica. In my opinion, the textbook should not show formulas in detail which cover three or more pages-these technical data should just be contained on the CD. Instead, the textbook should focus on more detailed explanation of the physical concepts behind the technicalities. The discussion of the virial equation would benefit much from replacing 15 pages of Mathematica output with 15 pages of further explanation and motivation. In this combination, the power of computing merged with physical intuition would
Spurgeon, D
2001-01-01
An highly successful business man has donated 100 million Canadian dollars to found the Perimeter Institue for Theoretical Physics. It is designed to attract young, innovative scientists to tackle some of the most difficult problems in physics such as quantum gravity and quantum information theory (1 page).
Physical Protection System Design Analysis against Insider Threat based on Game Theoretic Modeling
International Nuclear Information System (INIS)
Kim, Kyo-Nam; Suh, Young-A; Yim, Man-Sung; Schneider, Erich
2015-01-01
This study explores the use of game-theoretic modeling of physical protection analysis by incorporating the implications of an insider threat. The defender-adversary interaction along with the inclusion of an insider is demonstrated using a simplified test case problem at an experimental fast reactor system. Non-detection probability and travel time are used as a baseline of physical protection parameters in this model. As one of the key features of the model is its ability to choose among security upgrades given the constraints of a budget, the study also performed cost benefit analysis for security upgrades options. In this study, we analyzed the expected adversarial path and security upgrades with a limited budget with insider threat modeled as increasing the non-detection probability. Our test case problem categorized three types of adversary paths assisted by the insider and derived the largest insider threat in terms of the budget for security upgrades. More work needs to be done to incorporate complex dimensions of insider threats, which include but are not limited to: a more realistic mapping of insider threat, accounting for information asymmetry between the adversary, insider, and defenders, and assignment of more pragmatic parameter values
PREFACE: XXXth International Colloquium on Group Theoretical Methods in Physics (ICGTMP) (Group30)
Brackx, Fred; De Schepper, Hennie; Van der Jeugt, Joris
2015-04-01
The XXXth International Colloquium on Group Theoretical Methods in Physics (ICGTMP), also known as the Group30 conference, took place in Ghent (Belgium) from Monday 14 to Friday 18 July 2014. The conference was organised by Ghent University (Department of Applied Mathematics, Computer Science and Statistics, and Department of Mathematical Analysis). The website http://www.group30.ugent.be is still available. The ICGTMP is one of the traditional conference series covering the most important topics of symmetry which are relevant to the interplay of present-day mathematics and physics. More than 40 years ago a group of enthusiasts, headed by H. Bacry of Marseille and A. Janner of Nijmegen, initiated a series of annual meetings with the aim to provide a common forum for scientists interested in group theoretical methods. At that time most of the participants belonged to two important communities: on the one hand solid state specialists, elementary particle theorists and phenomenologists, and on the other mathematicians eager to apply newly-discovered group and algebraic structures. The conference series has become a meeting point for scientists working at modelling physical phenomena through mathematical and numerical methods based on geometry and symmetry. It is considered as the oldest one among the conference series devoted to geometry and physics. It has been further broadened and diversified due to the successful applications of geometric and algebraic methods in life sciences and other areas. The first four meetings took place alternatively in Marseille and Nijmegen. Soon after, the conference acquired an international standing, especially following the 1975 colloquium in Nijmegen and the 1976 colloquium in Montreal. Since then it has been organized in many places around the world. It has become a bi-annual colloquium since 1990, the year it was organized in Moscow. This was the first time the colloquium took place in Belgium. There were 246 registered
ANL/Star project: a new architecture for large scale theoretical physics computations
Energy Technology Data Exchange (ETDEWEB)
Rushton, A.M.
1985-01-01
The project reported consists of two phases, each of which has goals of substantial physics content on its own. In Phase 1, we have selected Star Technologies' ST-100 as the array processor for the prototype coupled system and have installed one on a Vax 11/750 host. Our goals with this system are to institute a substantial program in computational physics at Argonne based on the power provided by this system and thereby to gain experience with both the hardware and software architecture of the ST-100. In Phase II, we propose to build a prototype consisting of two coupled array processors with shared memory to prove that this design can achieve high speed and efficiency in a readily extensible and cost-effective manner. This will implement all of the hardware and software modifications necessary to extend this design to as many as 64 (or more) nodes. In our design, we seek to minimize the changes made in the standard system hardware and software; this drastically reduces the effort required by our group to implement such a design and enables us to more readily incorporate the companies' upgrades to the array processor. It should be emphasized that our design is intended as a special purpose system for theoretical calculations; however it can be efficiently applied to a surprisingly broad class of problems. I shall discuss first the architecture of the ST-100 and then the physics program being currently implemented on a single system. Finally the proposed design of the coupled system is presented.
ANL/Star project: a new architecture for large scale theoretical physics computations
International Nuclear Information System (INIS)
Rushton, A.M.
1985-01-01
The project reported consists of two phases, each of which has goals of substantial physics content on its own. In Phase 1, we have selected Star Technologies' ST-100 as the array processor for the prototype coupled system and have installed one on a Vax 11/750 host. Our goals with this system are to institute a substantial program in computational physics at Argonne based on the power provided by this system and thereby to gain experience with both the hardware and software architecture of the ST-100. In Phase II, we propose to build a prototype consisting of two coupled array processors with shared memory to prove that this design can achieve high speed and efficiency in a readily extensible and cost-effective manner. This will implement all of the hardware and software modifications necessary to extend this design to as many as 64 (or more) nodes. In our design, we seek to minimize the changes made in the standard system hardware and software; this drastically reduces the effort required by our group to implement such a design and enables us to more readily incorporate the companies' upgrades to the array processor. It should be emphasized that our design is intended as a special purpose system for theoretical calculations; however it can be efficiently applied to a surprisingly broad class of problems. I shall discuss first the architecture of the ST-100 and then the physics program being currently implemented on a single system. Finally the proposed design of the coupled system is presented
Energy Technology Data Exchange (ETDEWEB)
Amusia, Miron [Hebrew Univ., Jerusalem (Israel). Racah Inst. of Physics; Ioffe Physico-Technical Inst., St. Petersburg (Russian Federation); Chernysheva, Larissa [Ioffe Physico-Technical Inst., St. Petersburg (Russian Federation); Yarzhemsky, Victor [Kurnakov Institute of General and Inorganic Chemistry, Moscow (Russian Federation)
2012-07-01
The aim of this book is to present highly accurate and extensive theoretical Atomic data and to give a survey of selected calculational methods for atomic physics, used to obtain these data. The book presents the results of calculations of cross sections and probabilities of a broad variety of atomic processes with participation of photons and electrons, namely on photoabsorption, electron scattering and accompanying effects. Included are data for photoabsorption and electron scattering cross-sections and probabilities of vacancy decay formed for a large number of atoms and ions. Attention is also given to photoionization and vacancy decay in endohedrals and to positron-atom scattering. The book is richly illustrated. The methods used are one-electron Hartree-Fock and the technique of Feynman diagrams that permits to include many-electron correlations. This is done in the frames of the Random Phase approximation with exchange and the many-body perturbation theory. Newly obtained and previously collected atomic data are presented. The atomic data are useful for investigating the electronic structure and physical processes in solids and liquids, molecules and clusters, astronomical objects, solar and planet atmospheres and atomic nucleus. Deep understanding of chemical reactions and processes is reached by deep and accurate knowledge of atomic structure and processes with participation of atoms. This book is useful for theorists performing research in different domains of contemporary physics, chemistry and biology, technologists working on production of new materials and for experimentalists performing research in the field of photon and electron interaction with atoms, molecules, solid bodies and liquids.
[Basic research in theoretical high energy physics.] Progress report, April 30, 1984-April 30, 1985
International Nuclear Information System (INIS)
Adler, S.L.
1985-01-01
Progress is reported on non-perturbative problems in quantum field theories, including a field-theoretic issue regarding the relationship between operators on the lattice and in the continuum. The phase diagram of SU(3) lattice gauge theories with light fermions was investigated as a function of the gauge coupling and the fermion mass. A formulation of higher derivative gravity on a simplicial lattice was developed. Analytical and numerical work was carried out in two- and four-dimensional lattice gravity to study the phase diagram of the theory, the existence of nontrivial fixed points, and the question of the renormalization of the cosmological constant. A study was conducted on hadronic decay amplitudes in lattice gauge theory. Other studies conducted include: a covariant functional Schroedinger formalism for quantum field theory in curved space-time, constraints on magnetic mass, anomalies in reparameterization invariance in Type I superstrings, the Wess-Zumino action as an effective description of the anomalies of a theory, quantum fluctuations that can produce small regions of chirally symmetric phase in QCD, and supersymmetry anomalies. Also, the electric charge of a nonabelian magnetic monopole in the presence of fermions was related to a nonabelian generalization of the eta-invariant and computed exactly using Gauss' law. The mathematical connections between chiral anomalies, Levinson's theorem and symmetry breaking have been studied. The physics of fermion number fractionization was reviewed and a general topological theory was developed. The effect of instantons in the field theoretic description of the integral quantum Hall effect was studied. Some aspects of the anomaly cancellation of SO(32) superstring theory after compactification were examined. Also studied were dynamical supersymmetry brreaking and properties of quasi-crystals. 70 refs
Bellotti, Elisa
2011-01-01
This paper explores the complementarities and differences between Bourdieu's Field Theory and Social Network Analysis from both a theoretical and methodological perspective. The argument is applied to a case study about the social production and validation of knowledge in particle physics in Italy. The methodological choices that have lead the research project are presented and justified, and provide a good example about the strengths and the weaknesses of the two theoretical perspectives com...
Pombo, Claudia
2015-10-01
The art of memory started with Aristotle's questions on memory. During its long evolution, it had important contributions from alchemists, was transformed by Ramon Llull and apparently ended with Giordano Bruno, who was considered the best known representative of this art. This tradition did not disappear, but lives in the formulations of our modern scientific theories. From its initial form as a method of keeping information via associations, it became a principle of classification and structuring of knowledge. This principle, which we here name differentiation with stratification, is a structural design behind classical mechanics. Integrating two different traditions of science in one structure, this physical theory became the modern paradigm of science. In this paper, we show that this principle can also be formulated as a set of questions. This is done via an analysis of theories, based on the epistemology of observational realism. A combination of Rudolph Carnap's concept of theory as a system of observational and theoretical languages, with a criterion for separating observational languages, based on analytical psychology, shapes this epistemology. The `nuclear' role of the observational laws and the differentiations from these nucleus, reproducing the general cases of phenomena, reveals the memory art's heritage in the theories. Here in this paper we argue that this design is also present in special relativity and in quantum mechanics.
Theoretical atomic and molecular physics: Progress report, July 1, 1988 through June 30, 1989
International Nuclear Information System (INIS)
Lane, N.F.
1989-01-01
The theoretical atomic and molecular physics program at Rice University emphasizes fundamental questions regarding the structure and collision dynamics of various atomic and molecular systems with some attention given to atomic processes at surfaces. Our activities have been centered on continuing the projects initiated last year as well as beginning some new studies. These include: differential elastic and charge-transfer scattering and alignment and orientation of the excited electron cloud in ion-atom, atom-atom and ion-molecule collisions, using a molecular-orbital representation and both semiclassical and quantal methods; quenching of low-lying Rydberg states of a sodium atom in a collision with a rare-gas atom, using a semiclassical representation; so far, target atoms He, Ne and Ar have been studied; chemiionization and ion-pair formation in a collision of a Li atom with a metastable He atom at intermediate collision energies, using a combination of quantal and semi-classical methods; Penning ionization of alkali atoms Na and K, using advanced Cl and Stieltjes imaging methods; radiative and nonradiative charge-transfer in He + + H collisions at ultra-low collision energies, using quantal methods; elastic and inelastic processes in electron-molecule collisions, using the continuum-multiple-scattering method; and inelastic collision processes in dense, high-temperature plasmas. Selected highlights of our research progress are briefly summarized in this paper
Progress report for a research program in theoretical high-energy physics
International Nuclear Information System (INIS)
Feldman, D.; Fried, H.M.; Guralnik, G.S.; Jevicki, A.; Kang, K.; Tan, C.I.
1980-01-01
The past year's research has dealt with a wide range of topics in High-Energy Theoretical Physics. Important new results have been found in the fields of large-N expansions in quantum field theories via an effective Hamiltonian technique, and by the method of classical field equations supplemented by quantum boundary conditions; finite lattice QCD at N/sub c/ = infinity; neutrino oscillations and natural flavor conservation in gauge theory; the vanishing of the renormalized effective potential in phi 4 4 theory; a new method for treating singular differential equations; and an infrared cluster expansion in quantum field theory. In addition, substantial progress has been made in the analyses of lattice gauge theories; studies of factorization properties of mass and infrared singularities in QCD: non-hermitian quantum problems in the context of Gribov field theories; symmetry breaking via contracted groups; the calculation of Cabibbo-type angles and grand unification theories; and strong-coupling methods in gauge and nongauge field theories, using a systematic, lattice-formulated, perturbation theory, and by the extraction of relevant infrared structure
Delle Site, Luigi
2018-01-01
A theoretical scheme for the treatment of an open molecular system with electrons and nuclei is proposed. The idea is based on the Grand Canonical description of a quantum region embedded in a classical reservoir of molecules. Electronic properties of the quantum region are calculated at constant electronic chemical potential equal to that of the corresponding (large) bulk system treated at full quantum level. Instead, the exchange of molecules between the quantum region and the classical environment occurs at the chemical potential of the macroscopic thermodynamic conditions. The Grand Canonical Adaptive Resolution Scheme is proposed for the treatment of the classical environment; such an approach can treat the exchange of molecules according to first principles of statistical mechanics and thermodynamic. The overall scheme is build on the basis of physical consistency, with the corresponding definition of numerical criteria of control of the approximations implied by the coupling. Given the wide range of expertise required, this work has the intention of providing guiding principles for the construction of a well founded computational protocol for actual multiscale simulations from the electronic to the mesoscopic scale.
International Nuclear Information System (INIS)
Giorgi, F.; Molteni, F.
2002-01-01
The Physics of Weather and Climate Section at the Abdus Salam International Centre for Theoretical Physics, established in 1998, is currently performing research on different aspects of climate variability, dealing with both natural and anthropogenic aspects of climate changes. In addition to performing diagnostic work on multi-decadal observational datasets and climate simulations carried out in major research centres, the PWC section has been developing its own climate modeling capability, which is focused on three main areas: a) modeling of regional climate change; b) seasonal forecasting at global and regional scale; c) development of simplified models of the general circulation. On topic a), research on different aspects of anthropogenic climate change is being carried out using the Regional Climate (RegCM) developed by Giorgi and collaborators at the National Centre for Atmospheric Research. Time-slice experiments with a high-resolution atmospheric GCM, comparing current climate conditions with future climate scenarios in selected decades, are also planned for the near future. On topic b), a strategy based on ensembles of high-resolution simulations with atmospheric GCM's, using sea surface temperature anomalies predicted by lower-resolution coupled models from other institutions, is currently under experimentation. A one-way nesting of RegCM into the GCM simulations will also be tested. On item c), a 5-layer atmospheric GCM with simplified physical parameterizations has been developed. This model has a very small computational cost compared with state-of-the-art GCMs, and is suitable for studies of natural climate variability on inter-decadal and intercentennial time scales. It is planned to couple this model to simplified ocean models of different complexity, from a simple, static mixed layer model, to simplified models of the tropical Pacific circulation suited to the simulation of the El Nino phenomenon. A joint project with the IAEA-MEL Laboratory in
Lulek, Tadeusz; Wal, Andrzej; Lulek, Barbara
2010-03-01
This volume contains the Proceedings of the Tenth Summer School on Theoretical Physics under the banner title 'Symmetry and Structural Properties of Condensed Matter' (SSPCM 2009). The School was organized by Rzeszow University of Technology, Poland, in cooperation with AGH University of Science and Technology, Cracow, Poland, and took place on 2-9 September 2009 in Myczkowce, Poland. With this meeting we have reached the round number ten of the series of biannual SSPCM schools, which started in 1990 and were focused on some advanced mathematical methods of condensed matter physics. The first five meetings were held in Zajaczkowo near Poznan, under the auspices of The Institute of Physics of Adam Mickiewicz University, and the last five in Myczkowce near Rzeszów, in the south-eastern part of Poland. Within these two decades several young workers who started at kindergarten lectures at SSPCM, have now reached their PhD degrees, professorships and authority. Proceedings of the first seven SSPCM meetings were published as separate volumes by World Scientific, and the last two as volumes 30 and 104 of Journal of Physics: Conference Series. The present meeting is also the third of the last schools which put the emphasis on quantum informatics. The main topics of our jubilee SSPCM'09 are the following: Information processing, entanglement, and tensor calculus, Integrable models and unitary symmetry, Finite systems and nanophysics. The Proceedings are divided into three parts accordingly. The school gathered together 55 participants from seven countries and several scientific centers in Poland, accommodating again advanced research with young collaborators and students. Acknowledgements The Organizing Committee would like to express its gratitude to all participants for their many activities during the School and for creating a friendly and inspiring atmosphere within our SSPCM society. Special thanks are due to all lecturers for preparing and presenting their talks and
Tomasone, Jennifer R; Arbour-Nicitopoulos, Kelly P; Pila, Eva; Lamontagne, Marie-Eve; Cummings, Isabelle; Latimer-Cheung, Amy E; Routhier, François
2017-06-01
In Canada, two counseling services are offered to facilitate physical activity participation among persons with physical disabilities, yet both have encountered concerns related to the recruitment and retainment of clients. The purpose of this paper is to explore factors related to service adoption among nonusers, and the barriers and facilitators to maintaining service participation among adopters. Individuals who had never enrolled in the services (nonusers, n = 13) as well as current/previous service clients (adopters, n = 26) participated in interviews based on the Theoretical Domains Framework. Transcripts were subjected to deductive thematic analysis according to participant group. Fifteen themes relating to service adoption within 10 of the 12 theoretical domains were identified for nonusers, while 23 themes relating to maintenence of service participation were identified across all 12 theoretical domains for adopters. The findings provide strategies to improve recruitment, adoption, and retention of clients in counseling services and to enhance the experiences of targeted service users. Implications for Rehabiliation Peer support and education for equipment use should be built into physical activity programs to encourage participation among persons with physical disabilities. Programs that encourage physical activity among individuals with disabilities should be designed by practitioners to be responsive to a variety of needs, which are addressed in the program's advertisements and offerings. The Theoretical Domains Framework is a useful framework for providing valuable insight about clients' experiences of adoption and maintenance of a behavior change service, suggesting merit in other rehabilitation settings.
Czech Academy of Sciences Publication Activity Database
Srnec, Martin; Zahradník, Rudolf
-, č. 12 (2007), s. 1529-1543 ISSN 1434-1948 Institutional research plan: CEZ:AV0Z40550506; CEZ:AV0Z40400503 Keywords : ab initio calculations * cluster compounds * structural elucidation Subject RIV: CF - Physical ; Theoretical Chemistry Impact factor: 2.597, year: 2007
Institute for Theoretical Physics: Progress report 1986/87 (October 1986 - September 1987)
International Nuclear Information System (INIS)
Pilch, M.
1987-12-01
The research projects in the fields: electromagnetic processes, quantum mechanics and field theory, elementary particle physics, mathematical physics, many-body physics and nuclear physics, semiconductor physics, energy and foundations of nuclear energetics are given in titles only. There is additionally a list of publications, preprints, submitted papers, lectures, by institute staff members, and theses. (qui)
Quantum Wells, Wires and Dots Theoretical and Computational Physics of Semiconductor Nanostructures
Harrison, Paul
2011-01-01
Quantum Wells, Wires and Dots, 3rd Edition is aimed at providing all the essential information, both theoretical and computational, in order that the reader can, starting from essentially nothing, understand how the electronic, optical and transport properties of semiconductor heterostructures are calculated. Completely revised and updated, this text is designed to lead the reader through a series of simple theoretical and computational implementations, and slowly build from solid foundations, to a level where the reader can begin to initiate theoretical investigations or explanations of their
Progress report 1983/84 of the Institute for Theoretical Physics of University of Graz, Austria
International Nuclear Information System (INIS)
Pucker, N.
1984-12-01
The research fields of the institute are presented 1) electromagnetic processes in external fields 2) quantum mechanics and field theory 3) elementary particle theory 4) mathematical physics 5) many-particle and nuclear physics 6) semiconductor physics 7) energy and fundamentals of nuclear energies. (G.Q.)
Grammaire progressive du français niveau intermédiaire
Grégoire, Maïa
2017-01-01
Quatrième édition de l'ouvrage de Grammaire de français langue étrangère (FLE), niveau intermédiaire, dans la collection Progressive du français destiné aux grands adolescents et adultes. Ce qui fait le succès de cet ouvrage de Grammaire: une organisation claire : la leçon de grammaire sur la page de gauche; les exercices d'entraînement sur la page de droite 52 chapitres présentant les points généralement abordés aux niveaux A2 et B1 du Cadre européen commun de référence pour les langues un apprentissage progressif : il suit la progression naturelle des méthodes de français un usage souple : pour la classe ou en auto-apprentissage une préparation adaptée aux certifications : un entreînement efficace pour mieux réussir aux examens NOUVEAU! Appli-web de la Grammaire progressive du français incluse Pour s'entraîner et s'évaluer en ligne en sollicitant toutes les compétences écrites et orales : près de 300 exercices interactifs avec dialogues, instructions, exemples et corrigés ora...
Grammaire progressive du français corrigés : niveau intermédiaire
Thiévenaz, Odile
2017-01-01
Quatrième édition des corrigés de l'ouvrage de Grammaire de français langue étrangère (FLE), niveau intermédiaire, dans la collection Progressive du français destiné aux grands adolescents et adultes. Ce qui fait le succès de cet ouvrage de grammaire: Une organisation claire : la leçon de grammaire sur la page de gauche, les exercices d'entraînement sur la page de droite 52 chapitres présentant les points généralement abordés aux niveaux A2 et B1 du Cadre européen commun de référence pour les langues Un apprentissage progressif : il suit la progression naturelle des méthodes de français Un usage souple : pour la classe ou en auto-apprentissage Une préparation adaptée aux certifications : un entraînement efficace pour mieux réussir aux examens NOUVEAU! Appli-Web de la Grammaire progressive du français Pour s'entraîner et s'évaluer en ligne en sollicitant toutes les compétences écrites et orales: près de 300 exercices interactifs avec dialogues, instructions, exemples et corri...
Wal, Andrzej; Barnaś, Józef
2016-01-01
This book is a collection of lecture notes which were presented by invited speakers at the Eleventh School on Theoretical Physics "Symmetry and Structural Properties of Condensed Matter SSPCM 2014" in Rzeszów (Poland) in September 2014. The main challenge for the lecturers was the objective to present their subject as a review as well as in the form of introduction for beginners. Topics considered in the volume concentrate on: spin dynamics and spin transport in magnetic and non-magnetic structures, spin-orbit interaction in two-dimensional systems and graphene, and new mathematical method used in the condensed matter physics.
Directory of Open Access Journals (Sweden)
Pilipej L. P.
2013-02-01
Full Text Available Efficiency of the existent system of physical education is considered in the higher institutes of Ukraine. Information of unsatisfactory level of physical preparedness of university entrants and graduating students of higher institutes is resulted. The lacks of construction of process of physical education are shown on the basis of normatively-command approach. Absence of the programs, which take into account motivation and terms of activity of higher institutes, disparity the requirements of integration in the river-bed of the Bologna Process, is shown. The analysis of publications is resulted in accordance with the modern scientific paradigm of construction of the system of physical education of students on the basis of methodology of synergetics. Information of the questionnaire questioning is utillized in research. Cross-correlation connections are presented between elements of physical education systems, which influence on efficiency of process. The basic requirements of construction of process of physical education of students of institutes of higher are set.
Theoretical aspects of electroweak and other interactions in medium energy nuclear physics
International Nuclear Information System (INIS)
Mukhopadhyay, N.C.
1989-01-01
In the project year 1989--1990, progress has been made towards the theoretical modeling of the photoproduction of eta mesons off nucleons and in complex nuclei. Exploration of hadron models has produced interesting perspectives on the violation of gauge invariance due to truncation of the quark model space. New projects in perturbative quantum chromodynamics and spectrum generating algebras for hadrons have been started
Physics in one dimension: theoretical concepts for quantum many-body systems.
Schönhammer, K
2013-01-09
Various sophisticated approximation methods exist for the description of quantum many-body systems. It was realized early on that the theoretical description can simplify considerably in one-dimensional systems and various exact solutions exist. The focus in this introductory paper is on fermionic systems and the emergence of the Luttinger liquid concept.
At Odds: Reconciling Experimental and Theoretical Results in High School Physics
Gates, Joshua
2009-01-01
For this experiment, students are divided into 2 groups and presented with a static equilibrium force-balance problem to solve. One group works entirely experimentally and the other group theoretically, using Newton's laws. The groups present their seemingly dissimilar results and must reconcile them through discussion. (Contains 3 figures.)
2005-01-01
Current research in High Energy Physics focuses on a number of enigmatic issues that go beyond the very successful Standard Model of particle physics. Among these are the problem of neutrino mass, the (as yet) unobserved Higgs particle, the quark-gluon plasma, quantum aspects of gravity, and the so--called hierarchy problem. Satisfactory resolution of these important questions will take much research effort in both theory and experiment. The Science & Engineering Research Council, Department of Science & Technology has sponsored a series of SERC Schools in Theoretical High Energy Physics over the past several years, to provide instruction and training to graduate students working for research degrees. This book is an outcome of the schools held at the Saha Institute of Nuclear Physics, Kolkata in 2000, and at the Harish-Chandra Research Institute, Allahabad in 2001. Based on lectures by active researchers in the field---Rajiv Gavai, Debashis Ghoshal, Dileep Jatkar, Anjan Joshipura, Biswarup Mukhopadhy...
Phil Wallace and Theoretical Physics at McGill in the 1950's: A Personal Perspective
Energy Technology Data Exchange (ETDEWEB)
Jackson, John David
2010-11-18
In 1946 Philip (Phil) Russell Wallace joined the Mathematics Department of McGill University as an Associate Professor of Applied Mathematics, apparently because A. H. S. Gillson, Dean of Arts and Science, wanted theoretical physicists to be in the Mathematics Department. He came with the dream of creating a theoretical physics group at McGill. By the spring of 1949, Phil was authorized to recruit two junior faculty in Mathematics. He hired Theodore (Ted) F. Morris from U. Toronto, who joined in September 1949, and me, who came in January 1950. The group had begun. Phil Wallace was born in Toronto in 1915 and grew up there. He entered the University of Toronto in 1933, earned a B.A. in mathematics in 1937, a M.A. in 1938, and a Ph.D. in applied mathematics in 1940 under Leopold Infeld. His Ph.D. thesis in general relativity was entitled 'On the relativistic equations of motion in electromagnetic theory.' In 1940 World War II had engulfed Europe and was having its effect on Canada, but the US was still at peace. L. J. Synge, Head of the Applied Mathematics Department at Toronto, told Wallace that people such as he would be needed in war work, but things were not ready quite yet. Hold yourself ready. Phil took a two-year position as lecturer in mathematics at the University of Cincinnati (1940-42); in the fall of 1942 he became a lecturer in mathematics at M.I.T. It was from there that he was recruited by Synge to join the war effort from 1943 to 1946 at N.R.C.'s Montreal Laboratory, the genesis of the Canadian Atomic Energy Project. Phil has described those heady wartime years in these pages. Much of the effort of the theoretical physicists was on nuclear reactor theory and the properties of relevant materials, such as graphite, under long and intense neutron bombardment. In late 1945 Phil was sent for four months to Bristol to learn about the properties of graphite from the esteemed N. F. Mott. This exposure led Phil to a life-long interest in
International Nuclear Information System (INIS)
Collins, J.C.
1987-01-01
Theoretical research on elementary particles is reported, with progress discussed in these areas: heavy quark production, the cosmic rays observed from Cygnus X-3, hadron-hadron collisions at small values of x, Monte Carlo event generators for hadron-hadron collisions, review of perturbative QCD theorems, direct computation of helicity amplitudes for tree diagrams, and application of the factorization of helicity amplitudes to the effective W approximation
Research in Theoretical High-Energy Physics at Southern Methodist University
Energy Technology Data Exchange (ETDEWEB)
Olness, Fredrick [Southern Methodist Univ., Dallas, TX (United States); Nadolsky, Pavel [Southern Methodist Univ., Dallas, TX (United States)
2016-08-05
The SMU Theory group has developed a strong expertise in QCD, PDFs, and incisive comparisons between collider data and theory. The group pursues realistic phenomenological calculations for high-energy processes, the highly demanded research area driven by the LHC physics. Our field has seen major discoveries in recent years from a variety of experiments, large and small, including a number recognized by Nobel Prizes. There is a wealth of novel QCD data to explore. The SMU theory group develops the most advanced and innovative tools for comprehensive analysis in applications ranging from Higgs physics and new physics searches to nuclear scattering.
Research in Theoretical High-Energy Physics at Southern Methodist University
International Nuclear Information System (INIS)
Olness, Fredrick; Nadolsky, Pavel
2016-01-01
The SMU Theory group has developed a strong expertise in QCD, PDFs, and incisive comparisons between collider data and theory. The group pursues realistic phenomenological calculations for high-energy processes, the highly demanded research area driven by the LHC physics. Our field has seen major discoveries in recent years from a variety of experiments, large and small, including a number recognized by Nobel Prizes. There is a wealth of novel QCD data to explore. The SMU theory group develops the most advanced and innovative tools for comprehensive analysis in applications ranging from Higgs physics and new physics searches to nuclear scattering.
Energy Technology Data Exchange (ETDEWEB)
Constantin, A., E-mail: adrian.constantin@kcl.ac.uk [Department of Mathematics, King' s College London, Strand, London WC2R 2LS (United Kingdom); Faculty of Mathematics, University of Vienna, Oskar-Morgenstern-Platz 1, 1090 Vienna (Austria); Johnson, R.S., E-mail: r.s.johnson@ncl.ac.uk [School of Mathematics & Statistics, Newcastle University, Newcastle upon Tyne NE1 7RU (United Kingdom)
2016-09-07
Highlights: • Systematic theoretical methods in studies of equatorial ocean dynamics. • Linear wave-current interactions in stratified flows. • Exact solutions – Kelvin waves, azimuthal non-uniform currents. • Three-dimensional nonlinear currents. • Hamiltonian formulation for the governing equations and for structure-preserving/enhancing approximations. - Abstract: This essay is a commentary on the pivotal role of systematic theoretical methods in physical oceanography. At some level, there will always be a conflict between theory and experiment/data collection: Which is pre-eminent? Which should come first? This issue appears to be particularly marked in physical oceanography, to the extreme detriment of the development of the subject. It is our contention that the classical theory of fluids, coupled with methods from the theory of differential equations, can play a significant role in carrying the subject, and our understanding, forward. We outline the philosophy behind a systematic theoretical approach, highlighting some aspects of equatorial ocean dynamics where these methods have already been successful, paving the way for much more in the future and leading, we expect, to the better understanding of this and many other types of ocean flow. We believe that the ideas described here promise to reveal a rich and beautiful dynamical structure.
International Nuclear Information System (INIS)
Constantin, A.; Johnson, R.S.
2016-01-01
Highlights: • Systematic theoretical methods in studies of equatorial ocean dynamics. • Linear wave-current interactions in stratified flows. • Exact solutions – Kelvin waves, azimuthal non-uniform currents. • Three-dimensional nonlinear currents. • Hamiltonian formulation for the governing equations and for structure-preserving/enhancing approximations. - Abstract: This essay is a commentary on the pivotal role of systematic theoretical methods in physical oceanography. At some level, there will always be a conflict between theory and experiment/data collection: Which is pre-eminent? Which should come first? This issue appears to be particularly marked in physical oceanography, to the extreme detriment of the development of the subject. It is our contention that the classical theory of fluids, coupled with methods from the theory of differential equations, can play a significant role in carrying the subject, and our understanding, forward. We outline the philosophy behind a systematic theoretical approach, highlighting some aspects of equatorial ocean dynamics where these methods have already been successful, paving the way for much more in the future and leading, we expect, to the better understanding of this and many other types of ocean flow. We believe that the ideas described here promise to reveal a rich and beautiful dynamical structure.
Directory of Open Access Journals (Sweden)
Leyfa A.V.
2009-12-01
Full Text Available The value of theoretical knowledge, methodical, practical studies, skills in forming physical activity of students is rotined. The level of mastering of components of physical activity is closely associate with the basic blocks of professional preparation of students and their future professional activity. Theoretical knowledge on discipline the «Physical culture» assist the certain affecting depth and breadth of mastering of knowledge of professional preparation.
Technical progress report. Theoretical high-energy-physics research at the University of Chicago
International Nuclear Information System (INIS)
1983-04-01
Research activities are briefly reported. Topics include grand unified models, gluonic bound states, radiative decays of quarkonium, composite quarks and leptons, supersymmetry, magnetic monopoles in grand unified theories, and accelerator physics
Theoretical studies in hadronic and nuclear physics. Progress report, July 1, 1994--June 1, 1995
International Nuclear Information System (INIS)
Banerjee, M.K.; Griffin, J.J.
1995-06-01
This progress report contains 36 items of research work done by ten members of the University of Maryland Nuclear Theory Group with 21 outside collaborators from various institutions in the US, Canada, Korea and Europe. The report is in four sections, each representing major and basic areas of interest in nuclear theory. The sections are as follows: (1) hadrons in nuclei and nuclear matter; (2) hadron physics; (3) relativistic dynamics in quark, hadron and nuclear physics; (4) heavy ion dynamics and related processes
International Nuclear Information System (INIS)
El Naschie, M.S.
2004-01-01
A careful counting routine of all experimentally confirmed elementary particles plus the theoretically conjectured ones needed for a sound formulation of a mathematically consistent field theory is undertaken within a minimal N=1 super symmetric extension of the standard model of high energy physics. The number arrived at is subsequently linked to certain massless on shell representations connected to the quantized gravity interaction. Finally with the help of number theoretical arguments arising from a rigorous application of the formalism of transfinite Heterotic super string and E-infinity theory, we show that the proposed scheme would lack mathematical consistency and elegant simplicity unless we retain a postulated triplet which is logically identified as the H + , H - and H 0 Higgs particles. Connections to the 11 dimensional M theory and Harari's extended 'sub-quarks' theory is also discussed
Research in theoretical physics: Annual progress report for period April 1, 1988--March 31, 1989
International Nuclear Information System (INIS)
Domokos, G.; Kovesi-Domokos, S.
1988-11-01
This report contains a summary of research carried out in order to search for a substructure of quarks and leptons. Theoretical predictions valid for a large class of composite models suggest enhanced muon production in high energy lepton-induced reactions. A tentative analysis of some cosmic ray data indicates that the predictions of such models are in accordance with the data. In order to move towards the construction of satisfactory composite models, a study of gauge invariant effective actions and phase transitions in gauge theories was begun. 20 refs., 1 fig
Shukla, P. K.; Stenflo, L.
2005-01-01
The "International Workshop on Theoretical Plasma Physics: Modern Plasma Science was held at the Abdus Salam International Centre for Theoretical Physics (Abdus Salam ICTP), Trieste, Italy during the period 5 16 July 2004. The workshop was organized by P K Shukla, R Bingham, S M Mahajan, J T Mendonça, L Stenflo, and others. The workshop enters into a series of previous biennial activities that we have held at the Abdus Salam ICTP since 1989. The scientific program of the workshop was split into two parts. In the first week, most of the lectures dealt with problems concerning astrophysical plasmas, while in the second week, diversity was introduced in order to address the important role of plasma physics in modern areas of science and technology. Here, attention was focused on cross-disciplinary topics including Schrödinger-like models, which are common in plasma physics, nonlinear optics, quantum engineering (Bose-Einstein condensates), and nonlinear fluid mechanics, as well as emerging topics in fundamental theoretical and computational plasma physics, space and dusty plasma physics, laser-plasma interactions, etc. The workshop was attended by approximately hundred-twenty participants from the developing countries, Europe, USA, and Japan. A large number of participants were young researchers from both the developing and industrial countries, as the directors of the workshop tried to keep a good balance in inviting senior and younger generations of theoretical, computational and experimental plasma physicists to our Trieste activities. In the first week, there were extensive discussions on the physics of electromagnetic wave emissions from pulsar magnetospheres, relativistic magnetohydrodynamics of astrophysical objects, different scale sizes turbulence and structures in astrophysics. The scientific program of the second week included five review talks (60 minutes) and about thirty invited topical lectures (30 minutes). In addition, during the two weeks, there
Directory of Open Access Journals (Sweden)
Yury Vaskov
2015-04-01
Full Text Available Purpose: to study the problem of designing the content of unprofessional physical training at institutions of higher education. Material and Methods: analysis of regulatory documents and literature on the theory and methodology of physical education. Results: the article deals with the problems of determination the nomenclature of sources and factors that influence the selection and design of physical education’s content, the role and meaningful essence of them are proved, the new approaches to the detection of invariant and variable components of academic curriculum are suggested. Conclusion: the role and brief essence description of particular components of main sources and factors of non-professional sports education are detected, their particular hierarchy and importance are suggested. A variety of sources and design factors of unprofessional sports education is divided into two parts: non-teaching and teaching.
Theoretical high-energy physics. Progress report, 1 January-31 December 1985
International Nuclear Information System (INIS)
Feldman, D.; Fried, H.M.; Jevicki, A.; Kang, K.; Tan, C.I.
1985-01-01
This year's research has dealt with: one-loop structure of spontaneously broken gauge theories and the contraction of symmetry groups; continuum strong coupling approximations by infrared extraction; methods of approximating ordered exponentials; field theoretic methods for viscous Navier-Stokes fluid flow; discretization method to quantum gravity and string field theory; skyrmions and solitons in field theory; nonlinear sigma-models with Wess-Zumino type terms; a variety of grand unification models and family unification in grand unified theories; composite fermions; axions in superstring models; cosmological constraint on heavy particles; axion emissions in astrophysicial systems; calculability of flavor-mixings; a field theoretic understanding of the quantum Hall effect including scaling of effective theta-parameter for non-axionic explanation of strong CP invariance; correlation decay theorem at high temperature; axial anomaly in chirally invariant nonlocal lattice gauge theories; axial anomaly and index theorem for manifolds with boundary; nonperturbative aspect of lattice gauge theories; lattice QCD in large N limit; quantum fluctuations of matter fields; and pregeometric quantum lattice. 40 refs
Odden, Tor Ole B.
Students often emerge from introductory physics courses with a feeling that the concepts they have learned do not make sense. In recent years, science education researchers have begun to attend to this type of problem by studying the ways in which students make sense of science concepts. However, although many researchers agree intuitively on what sensemaking looks like, the literature on sensemaking is both theoretically fragmented and provides few guidelines for how to encourage and support the process. In this dissertation, I address this challenge by proposing a theoretical framework to describe students' sensemaking processes. I base this framework both on the science education research literature on sensemaking and on a series of video-recorded cognitive, clinical interviews conducted with introductory physics students enrolled in a course on electricity and magnetism. Using the science education research literature on sensemaking as well as a cognitivist, dynamic network model of mind as a theoretical lens, I first propose a coherent definition of sensemaking. Then, using this definition I analyze the sensemaking processes of these introductory physics students during episodes when they work to articulate and resolve gaps or inconsistencies in their understanding. Based on the students' framing, gestures, and dialogue I argue that the process of sensemaking unfolds in a distinct way, which we can describe as an epistemic game in which students first build a framework of knowledge, then identify a gap or inconsistency in that framework, iteratively build an explanation to resolve the gap or inconsistency, and (sometimes) successfully resolve it. I further argue that their entry into the sensemaking frame is facilitated by a specific question, which is in turn motivated by a gap or inconsistency in knowledge that I call the vexation point. I also investigate the results of sensemaking, arguing that students may use the technique of conceptual blending to both
Forsman, Jonas; Moll, Rachel; Linder, Cedric
2014-01-01
The viability of using complexity science in physics education research (PER) is exemplified by (1) situating central tenets of student persistence research in complexity science and (2) drawing on the methods that become available from this to illustrate analyzing the structural aspects of students' networked interactions as an important dynamic…
Herschell, Amy D.; McNeil, Cheryl B.
2005-01-01
Children who experience physical abuse often suffer numerous negative short- and long-term difficulties in comparison to non-abused children. Considerable effort has been invested in developing and identifying treatment interventions to attenuate these negative outcomes. Parent-Child Interaction Therapy (PCIT), originally developed for the…
19 CFR 19.24 - Theoretical transfer without physical shipment of dutiable metal.
2010-04-01
... dutiable metal. 19.24 Section 19.24 Customs Duties U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF... dutiable metal. (a) Transfer may be made from one port of entry to another by a withdrawal for transportation and rewarehouse executed in regular form without physical shipment of the metal, provided enough...
The Determination of Physical Activity among Girl Adolescents based on Trans-theoretical model (TTM
Directory of Open Access Journals (Sweden)
Masoumeh Alidosti
2017-07-01
Full Text Available Background It has been proved that physical activity has positive effects for all people. However, low activity is common among adolescents especially girl teenagers. The present study aimed to determine the condition of physical activity among girl adolescents by use of the stages of change derived from Trantheoretical model (TTM. Materials and Methods: This descriptive- analytical investigation was done (in 2016 and 2017 school year in the first – round girl high school among 324 students studying in state schools of Shahrekord city (Western Iran. They were selected through clustering method. The data were collected by researcher-made questionnaires including demographic characteristics, knowledge construct and the stages of change (pre-contemplation, contemplation, preparation, action and maintenance. The collected data were analyzed by SPSS (version 18.0. Results The mean age of participants was 13.69+ 1.95 years old. The mean score of girls' knowledge about types of physical activity was 53.18± 21.82 (a total of 100 scores, which represents the average level of knowledge among them. The study of physical activity in students based on stages of change showed that 165 ones (43 %, 102 ones (26.6 % and only 22 ones (5.7 % of the studied students were in precontemplation, contemplation and maintenance stages, respectively. There was a significant relation between students' knowledge level and their mothers' age (P
Audette, Jennifer Gail
2011-01-01
Purpose: International service-learning (ISL) is popular in higher education, and many physical therapy educational programs are adding ISL opportunities to their curricula because doing so aligns with student interest and the increasingly global nature of the profession. The faculty leading these experiences have not been studied. Nearly all…
Theoretical high energy physics research at the University of Chicago. Technical progress report
International Nuclear Information System (INIS)
Rosner, J.L.
1984-01-01
Research activities are briefly reported in the aras of quarkonium physics, e +- annihilations, neutral heavy leptons, magnetic monopoles, heavy vector bosons beyond the W and Z, supersymmetry, branching ratios in proton decay, and baryon magnetic moments publications are listed. 26 references
International Nuclear Information System (INIS)
Cohen, T.D.; Banerjee, M.K.
1994-07-01
Under Hadrons in Nuclei and Nuclear Matter the authors research the ways in which the properties of nucleons and mesons are modified in the nuclear medium. Research progress is reported on a number of topics in this general area, including studies of the role of chiral symmetry for finite density or temperature nuclear matter, the use of QCD sum rules to describe baryons in nuclear matter, and color transparency. In the general field of Hadron Physics broad progress included studies of perturbative QCD, heavy quark physics, QCD sum rules, and QCD-based models. Notable progress was also achieved in Relativistic Dynamics in Quark, Hadron, and Nuclear Physics, where an explicit model of composite particles shows how the z-graph physics (which is an essential part of Dirac phenomenology) comes about. In addition, calculations of elastic electron-deuteron scattering based on two-body relativistic dynamics and meson exchange currents were completed, as were studies of quark-anti-quark bound states based on a relativistic quark model. Progress is also reported on the relativistic few-body problem. In the area of Heavy Ion Dynamics and Sharp Lepton Pairs, work continues on the Composite Particle Scenario for the 'Sharp Lepton Problem'. In particular, the scenario can now encompass the anomalous sharp leptons reported from positron irradiation of heavy neutral atoms, establishing such irradiations as an alternative experimental window to the heavy ion experiments
Theoretical high energy physics: Progress report, May 1, 1987-April 30, 1988
International Nuclear Information System (INIS)
Lee, T.D.
1988-05-01
This paper discusses the progress on High Energy Physics projects by the facility of Columbia University. Short discussions are given on the use of parallel computers for numerical simulation of lattice quantum chromodynamics; Soliton condensation; High Temperature superconductivity; New calculations techniques for non-Abelian gauge theories and other related topics
Vieira, Pedro; DeWolfe, Oliver
2017-01-01
The program will consist of a pedagogical series of lectures and seminars. Lectures will be given over a four-week period, three or four lectures per day, Monday through Friday. The audience will be composed primarily of advanced theoretical graduate students. Experimentalists with a strong background in theory are also encouraged to apply. Some post-doctoral fellows will be admitted, but preference will be given to applicants who will not have received their Ph.D. before 2015. The minimum background needed to get full benefit of TASI is a knowledge of quantum field theory (including RGEs) and familiarity with the Standard Model. Some familiarity with SUSY and string theory would be helpful. We hope to provide some subsidy, but students will need partial support from other sources. Rooms, meals, and access to all facilities will be provided at reasonable rates in beautifully located dormitories at the University of Colorado.
Quantum wells, wires and dots theoretical and computational physics of semiconductor nanostructures
Harrison, Paul
2016-01-01
Quantum Wells, Wires and Dots provides all the essential information, both theoretical and computational, to develop an understanding of the electronic, optical and transport properties of these semiconductor nanostructures. The book will lead the reader through comprehensive explanations and mathematical derivations to the point where they can design semiconductor nanostructures with the required electronic and optical properties for exploitation in these technologies. This fully revised and updated 4th edition features new sections that incorporate modern techniques and extensive new material including: - Properties of non-parabolic energy bands - Matrix solutions of the Poisson and Schrodinger equations - Critical thickness of strained materials - Carrier scattering by interface roughness, alloy disorder and impurities - Density matrix transport modelling -Thermal modelling Written by well-known authors in the field of semiconductor nanostructures and quantum optoelectronics, this user-friendly guide is pr...
International Nuclear Information System (INIS)
Brandenberger, R.; Cutts, D.; Fried, H.M.
1993-01-01
The main emphasis in the theoretical program has been in the area of string theory; also investigated were confinement and other aspects of QCD, electroweak symmetry breaking, and electroweak baryogenesis. The research program in computational physics concentrated on the development of the source Galerkin method of numerical quantum field theory. One portion of the experimental program dealt with interactions of leptons and hadrons from accelerator and astrophysics sources. A description of the Large Volume Detector at Gran Sasso and its use as a stellar collapse monitor is given, along with an account of research and development on resistive plate counters. The rest of the experimental program concerns hadron collider and neutrino physics, with major emphasis on the D0 experiment at the TeVatron. The commissioning of the D0 detector and its operation are described, along with D0 analysis. Also reported is a novel cryogenic technique utilizing superfluid helium for neutrino calorimetry. 122 refs., 7 tabs., 23 figs
International Nuclear Information System (INIS)
Rosner, J.L.
1987-01-01
Research activities reported include: exotic fermions and gauge bosons in superstring models, collider physics, heavy quark spectroscopy, CP violation, color sextet quarks, neutral heavy leptons, fermion masses and supersymmetry, magnetic moments of baryons and other constraints on configuration mixing, dynamical mass generation, N = 2 supersymmetric QCD, and matrix methods in quantum mechanics. Other work addresses a fixed-target program and other non-SSC initiatives, hadroproduction of heavy quarks, electroproduction phenomenology at very small values of x, and spectrometer designs for the SSC. The novel physics possibilities of hadron colliders have been considered, and work is reported on radiative decays of the J/psi and on D-wave quarkonium levels, on the connection of elementary particles with cosmology and astrophysics, and conformal field theory. A rigorous development of the theory of super Riemann surfaces was developed with a view toward superstring applications. Work was pursued on supersymmetry breaking in the observable sector of superstring models and on inflationary cosmology
INFORMATION AND COMMUNICATION TECHNOLOGIES (ICT IN PHYSICAL EDUCATION. A THEORETICAL REVIEW
Directory of Open Access Journals (Sweden)
Mateo Rodríguez Quijada
2015-01-01
Full Text Available In this review we tour the treatment of the Information and Communication Technologies (ICT in the field of physical education by the professed and the students. For this purpose we review the existing lines of research on the topic and how the most remarkable works of different authors, with special attention to the situation in the autonomous community of Galicia. Finally the main problems related to the use of these technologies in classrooms are analyzed. All this in order t to shed light on a very topical issue regarding the education of our youth. Studies show that ICTs are increasingly present in the field of physical education, but much remains to be done to make an effective use of them in education.
Physical and theoretical modeling of rock slopes against block-flexure toppling failure
Directory of Open Access Journals (Sweden)
Mehdi Amini
2015-12-01
Full Text Available Block-flexure is the most common mode of toppling failure in natural and excavated rock slopes. In such failure, some rock blocks break due to tensile stresses and some overturn under their own weights and then all of them topple together. In this paper, first, a brief review of previous studies on toppling failures is presented. Then, the physical and mechanical properties of experimental modeling materials are summarized. Next, the physical modeling results of rock slopes with the potential of block-flexural toppling failures are explained and a new analytical solution is proposed for the stability analysis of such slopes. The results of this method are compared with the outcomes of the experiments. The comparative studies show that the proposed analytical approach is appropriate for the stability analysis of rock slopes against block-flexure toppling failure. Finally, a real case study is used for the practical verification of the suggested method.
Direct Simulation Monte Carlo for Atmospheric Entry. 1. Theoretical Basis and Physical Models
2009-09-01
of Nonequilibrium Flow in Low Power Hydrogen Arcjets ,” Physics of Fluids. Vol. 9, 1997, pp. 3086-3095. [47] Gallis, M.A. and Harvey, J.K., “Atomic...method (DSMC) has evolved over 40 years into a powerful numerical technique for the computation of complex, nonequilibrium gas flows. In this context...nonequilibrium means that the velocity distribution function is not in an equilibrium form due to a low number of intermolecular collisions within a
[Theoretical nuclear physics]: Technical progress report, October 1, 1986-October 1, 1987
International Nuclear Information System (INIS)
Kunz, P.D.
1987-01-01
This paper discusses the current research being carried out at the University of Colorado in Nuclear Physics. This research consist of the following topics; Dirac-Hartree for closed-shell /plus//minus/ nuclei, construction of Dirac-Hartree Green Functions, isovector currents in relativisitic models of nuclear structure, contact terms in the parametrization of NN amplitudes, the D/plus/D El capture reaction, and a new model for NN annihilation
International Nuclear Information System (INIS)
Collins, J.C.
1986-01-01
Since July 1985, most of the work has continued to be on problems in perturbative QCD that are relevant to physics at hadron collider - both for the Sp anti p S and the Tevatron, and for the proposed SSC. Some interesting problems have turned out to involve the relation between perturbative QCD and Regge theory - in diffractive hard scattering and in understanding the small-x behavior of parton distributions. 13 refs
Directory of Open Access Journals (Sweden)
M. Shafieinia
2015-01-01
Full Text Available Introduction & Objective: Sedentary women are at risk for problems such as obesity, diabetes, depression and cardiovascular disease. Meanwhile, due to long working hours and excessive travel time from home to work and vice versa the employees have minimal physical activity .The purpose of this study was to investigate the effective psychometric factors on physical activity of female employees, according to the Trans-theoretical Model and theory of planned behavior. Materials & Methods: In this cross-sectional study, 95 female staff of Tehran University was selected through a call. In order to collect data, a questionnaire with acceptable, reliability and validity, including demographic data, and constructs of planned behavior theory as well as Trans-theoretical Model was used. The data was analyzed using SPSS version 21 statisti-cal tests; correlation and stepwise regression were also performed. Results: In this study, 72% of the population was in the inactive stages (pre-contemplation, contemplation and preparation and only 28% of patients had regular physical activity. There was a significant positive correlation between the behavioral intention and attitude scores (P = 0.02, perceived behavioral control (P = 0.000, self-efficacy (P = 0.000 and stage of change (P = 0.000, but subjective norms score (P = 0.605 was irrelevant. Conclusion: The results of this study showed that self-efficacy and perceived behavioral con-trol can affect female employees’ intention and physical activity behaviors. So, the authori-ties should seriously consider these factors in educational planning for this stratum of society, remove barriers for the participation of more employees in sporting activities, and offer fa-cilitators at the community level. (Sci J Hamadan Univ Med Sci 2015; 21(4:350-359
A Theoretical Analysis: Physical Unclonable Functions and The Software Protection Problem
Energy Technology Data Exchange (ETDEWEB)
Nithyanand, Rishab [Stony Brook Univ., NY (United States); Solis, John H. [Sandia National Lab. (SNL-CA), Livermore, CA (United States)
2011-09-01
Physical Unclonable Functions (PUFs) or Physical One Way Functions (P-OWFs) are physical systems whose responses to input stimuli (i.e., challenges) are easy to measure (within reasonable error bounds) but hard to clone. This property of unclonability is due to the accepted hardness of replicating the multitude of uncontrollable manufacturing characteristics and makes PUFs useful in solving problems such as device authentication, software protection, licensing, and certified execution. In this paper, we focus on the effectiveness of PUFs for software protection and show that traditional non-computational (black-box) PUFs cannot solve the problem against real world adversaries in offline settings. Our contributions are the following: We provide two real world adversary models (weak and strong variants) and present definitions for security against the adversaries. We continue by proposing schemes secure against the weak adversary and show that no scheme is secure against a strong adversary without the use of trusted hardware. Finally, we present a protection scheme secure against strong adversaries based on trusted hardware.
The physical and theoretical basis of solar-terrestrial relationships 1. Equatorial locations
International Nuclear Information System (INIS)
Njau, E.C.
1988-07-01
The theory of solar-terrestrial relationships developed earlier by the author is extended to incorporate expressions that represent the non-linear responses of the earth-atmosphere system to incoming solar radiation in a more detailed manner. Application of the extended theory to equatorial locations leads to new and interesting features that are consistent with past observations. It also predicts the existence of new oscillations in the equatorial atmosphere whose causative physical processes are given and explained. Non-equatorial locations are treated along similar lines in Part 2 of the series. (author). 44 refs
a Theoretical Analysis of Physical Properties of Aqueous Trehalose with Borax
Sahara; Aniya, Masaru
2013-07-01
The temperature and composition dependence of the viscosity of aqueous trehalose and aqueous trehalose-borax mixtures has been investigated by means of the Bond Strength-Coordination Number Fluctuation (BSCNF) model. The result indicates that the variation in the fragility of the system is very small in the composition range analyzed. The values of the materials parameters determined are consistent with those of the trehalose-water-lithium iodide system which were analyzed in a previous study. Based on the analysis of the obtained parameters of the BSCNF model, the physical interpretation of the WLF parameters reported in a previous study is reconfirmed.
[Experimental and theoretical plasma physics program]. Technical progress in FY 1979
Energy Technology Data Exchange (ETDEWEB)
Griem, H.
1979-12-31
This report summarizes recent technical progress in the major areas of study. Because a considerable variety of work has been performed this year they authors first give brief synopses of individual research projects categorizing them as to their relevance to the general areas of plasma stability analyses, plasma heating or basic plasma physics. Next, they discuss these projects as they relate to and support the various DOE experimental programs. The DOE experimental programs are: (1) toroidal confinement systems; (2) open confinement systems; and (3) alternative concepts (EBT, Spheromak, field reversed mirrors and punches).
Chakraborty, Anutosh
2009-07-07
The Henry coefficients of a single component adsorbent + adsorbate system are calculated from experimentally measured adsorption isotherm data, from which the heat of adsorption at zero coverage is evaluated. The first part of the papers relates to the development of thermodynamic property surfaces for a single-component adsorbent + adsorbate system1 (Chakraborty, A.; Saha, B. B.; Ng, K. C.; Koyama, S.; Srinivasan, K. Langmuir 2009, 25, 2204). A thermodynamic framework is presented to capture the relationship between the specific surface area (Ai) and the energy factor, and the surface structural and the surface energy heterogeneity distribution factors are analyzed. Using the outlined approach, the maximum possible amount of adsorbate uptake has been evaluated and compared with experimental data. It is found that the adsorbents with higher specific surface areas tend to possess lower heat of adsorption (ΔH°) at the Henry regime. In this paper, we have established the definitive relation between Ai and ΔH° for (i) carbonaceous materials, metal organic frameworks (MOFs), carbon nanotubes, zeolites + hydrogen, and (ii) activated carbons + methane systems. The proposed theoretical framework of At and AH0 provides valuable guides for researchers in developing advanced porous adsorbents for methane and hydrogen uptake. © 2009 American Chemical Society.
Forsman, Jonas; Moll, Rachel; Linder, Cedric
2014-12-01
The viability of using complexity science in physics education research (PER) is exemplified by (1) situating central tenets of student persistence research in complexity science and (2) drawing on the methods that become available from this to illustrate analyzing the structural aspects of students' networked interactions as an important dynamic in student persistence. By drawing on the most cited characterizations of student persistence, we theorize that university environments are made up of social and academic systems, which PER work on student persistence has largely ignored. These systems are interpreted as being constituted from rules of interaction that affect the structural aspects of students' social and academic network interactions from a complexity science perspective. To illustrate this empirically, an exploration of the nature of the social and academic networks of university-level physics students is undertaken. This is done by combining complexity science with social network analysis to characterize structural similarities and differences of the social and academic networks of students in two courses. It is posited that framing a social network analysis within a complexity science perspective offers a new and powerful applicability across a broad range of PER topics.
International Nuclear Information System (INIS)
Souga, C.
1983-01-01
A three energy group theory is established to study physical characteristics of plutonium contaminated solid waste reference monitor for passive neutrons measurements. Spontaneous fission neutrons interaction with waste stream material and neutron leakage interaction with detector assembly are evaluated as a function of a set of physical and geometrical parameters (mass removal coefficient rho.Rsub(S)(g/cm 2 ); thickness of polyethylene moderator d(cm and energy E(eV)) using 1D ANISN-W transport code in S 8 P 3 and 100 groups approximations. Moreover this study allowed us to show the ''cross-over'': value of rho.Rsub(S) in proximity of which the dispersion around the mean effective escape probability is minimal and to evaluate the ''albedo effect'' which represents interaction between sample and detector assembly. The detection probability was evaluated as a function of different geometrical configurations of the detector in order to optimize its construction. Effective neutron escape probabilities calculated for three reference materials (polyethylene, iron and graphite) are in accordance with those given by experimental measures [fr
Research in Theoretical High Energy Nuclear Physics at the University of Arizona
Energy Technology Data Exchange (ETDEWEB)
Rafelski, Johann [Univ. of Arizona, Tucson, AZ (United States). Dept. of Physics
2016-03-28
In the past decade (2004-2015) we addressed the quest for the understanding of how quark confinement works, how it can be dissolved in a limited space-time domain, and what this means: i) for the paradigm of the laws of physics of present day; and, ii) for our understanding of cosmology. The focus of our in laboratory matter formation work has been centered on the understanding of the less frequently produced hadronic particles (e.g. strange antibaryons, charmed and beauty hadrons, massive resonances, charmonium, B_{c}). We have developed a public analysis tool, SHARE (Statistical HAdronization with REsonances) which allows a precise model description of experimental particle yield and fluctuation data. We have developed a charm recombination model to allow for off-equilibrium rate of charmonium production. We have developed methods and techniques which allowed us to study the hadron resonance yield evolution by kinetic theory. We explored entropy, strangeness and charm as signature of QGP addressing the wide range of reaction energy for AGS, SPS, RHIC and LHC energy range. In analysis of experimental data, we obtained both statistical parameters as well as physical properties of the hadron source. The following pages present listings of our primary writing on these questions. The abstracts are included in lieu of more detailed discussion of our research accomplishments in each of the publications.
International Nuclear Information System (INIS)
Romanowski, T.A.; Tanaka, K.; Wada, W.W.
1978-01-01
Experimental Program: assembly of an experiment as Fermilab E-531 to measure decay lifetimes, with tagged emulsion of charmed particles produced by high energy neutrinos was finished, and data taking now is in progress. An experiment to measure prompt neutrino production at Fermilab, E-613, was approved and detailed design of it is continuing. Search for parity violation in scattering of polarized protons, an experiment E-446-ZGS at ANL, was performed with the sensitivity of 10 -6 for detection of that process and yielded null results. Another run with improved sensitivity of 10 -7 is in preparation. Data analysis of the neutrino experiment E-310 at Fermilab will continue. Trimuon events, a new discovery, were identified in those data. Analysis of data on meson production from experiments performed at the ZGS--ANL, E-397, E-420 and E-428, with charged and neutral spectrometer will continue. A new relatively broad resonance (T approx. 70 MeV) with quantum numbers IJ/sup P/ = 00 -1 was discovered in the data from E-397. Analysis of beta decay of polarized Σ - hyperons is in progress. Participation in the design of the experimental areas for the Isabelle colliding proton beam accelerator will continue. Theoretical Program: topics of current interest in particle theory which will be investigated in the coming year are: the instanton-anti-instanton QCD gauge fields, discrete symmetries which may determine quark masses in the SU(2) x U(1) model, calculation of charmed meson production in e + e - collisions and formation of gluon jets, Higgs boson production in pp collisions, calculation of Higgs boson mass in terms of vector boson mass, study of Lagrangians with gauge and Higgs scalar fields, investigation of Faddeev--Popov determinants as related to quantum chromodynamics, a study of quantum flavor dynamics and anomalies in the axial vector Ward identity and a study of super symmetry as a part of a realistic model of leptonic interactions
Theoretical and experimental studies of elementary physics. Annual technical progress report
Energy Technology Data Exchange (ETDEWEB)
Bodek, A.; Ferbel, T.; Melissinos, A.C.; Olsen, S.; Slattery, P.; Tipton, P.; Das, A.; Hagen, C.R.; Rajeev, S.G.; Okubo, S.
1992-04-30
The experimental high energy physics program is directed toward the execution of experiments that probe the basic constituents of matter and the forces between them. These experiments are carried out at national and international accelerator facilities. At the current time, we are primarily concentrating on the following projects: Direct photon production in hadronic reactions (Fermilab E706); Production of hybrid mesons in the nuclear Coulomb field; The D-Zero experiment at the Tevatron collider; Deep inelastic neutrino- and electron-nucleon scattering at FNAL and SLAC; Nonlinear QED at critical field strengths at SLAC; The Experiments at KEK (AMY, 17keV neutrino); The CDF experiment at the Tevatron collider; and SSC-related detector R&D on scintillating tile- and diamond-based calorimetry and microstrip tracking detectors.
Theoretical aspects of target classification: Physical optics and radon transform methods
Langenberg, K. J.
1987-06-01
Target classification is set up as a multidimensional inverse scattering problem for electromagnetic waves. The target is considered to be of compact support residing in a media with constant wave speed. The scattered field produced by a prescribed incident field is represented by its equivalent sources in terms of Huygens' principle: for the sake of simplicity, the inversion of this representation of the physical optics or weak scatterer approximation linearizes the inverse problem resulting immediately in an inversion formula for the characteristic or singular function of the scatterer if the scattered field is measured as a function of frequency - or as broadband transients - on a closed surface sufficiently remote from the target in an either bistatic or monostatic experimental arrangement.
International Nuclear Information System (INIS)
Amano, Yukiya
2014-01-01
The ICTP was originally part of the Agency. In 1993, administration of the ICTP was transferred to UNESCO. We are still an important contributor to the ICTP budget and we work together in many areas, including training and nuclear knowledge management. This year, for example, our two organisations launched a two-year masters degree course in medical physics, which we developed together. Later today, I look forward to attending the opening of the IAEA X-Ray Fluorescence Beamline at the Elettra laboratory, which has been an IAEA Collaborating Centre since 2005. This important joint project will help to give research groups from developing countries better access to synchrotron radiation technology, which has important applications in human health, food and agriculture and other areas
Les Houches Summer School of Theoretical Physics : Session 72, Coherent Atomic Matter Waves
Westbrook, C; David, F; Coherent Atomic Matter Waves
2001-01-01
Progress in atomic physics has been so vigorous during the past decade that one is hard pressed to follow all the new developments. In the early 1990s the first atom interferometers opened a new field in which we have been able to use the wave nature of atoms to probe fundamental quantum me chanics questions as well as to make precision measurements. Coming fast on the heels of this development was the demonstration of Bose Einstein condensation in dilute atomic vapors which intensified research interest in studying the wave nature of matter, especially in a domain in which "macro scopic" quantum effects (vortices, stimulated scattering of atomic beams) are visible. At the same time there has been much progress in our understanding of the behavior of waves (notably electromagnetic) in complex media, both periodic and disordered. An obvious topic of speculation and probably of future research is whether any new insight or applications will develop if one examines the behavior of de Broglie waves in ana...
Kanoun, Mohammed
2012-01-01
In this chapter, we employ ab initio approaches to review some important physical properties of nanolaminated ternary carbides MAX phases. We fi rstly use an all electron full-potential linearized augmented plane-wave method within the generalized gradient approximation and the density functional theory approaches, to explore the existence of a steric effect on the M site in these compounds. The elastic properties are also reported in order to assess the mechanical stability. The substitution of oxygen for carbon in Ti 2 SnC M n +1 AX n, forming Ti 2 SnC 1- x O x, is examined next, where we simulated the effect of oxygen incorporation on mechanical and electronic properties using projector augmented wave method. We show that oxygen has interesting effects on both of elastic and electronic properties, that the bulk modulus decreases when oxygen concentration increases. The bonding in Ti 2 SnC 1- x O x has a tendency to a covalent-ionic nature with the presence of metallic character. © 2012 Woodhead Publishing Limited.
Theoretical high energy physics: Progress report for the period May 1, 1986-April 30, 1987
International Nuclear Information System (INIS)
Lee, T.D.
1987-05-01
Work is reported in the area of implementing QCD with dynamical fermions on a lattice parallel processor. Work on lattice gauge theory is reported, particularly the construction and use of high speed parallel computers for the Monte Carlo simulation of lattice quantum chromodynamics. Other work includes research on the long-range forces that arise from multi-photon exchange between diverse systems, and particle-antiparticle oscillations. Also reported is work on composite-Higgs models, composite fermion models, calculating corrections propagators in near-constant background fields, and calculating gluon scattering amplitudes using techniques derived from string theory. Soliton stars, black holes, and Hawking radiation were studied. An analytic expression was found for an inclusive two minijet cross section at collider energies in QCD. The very early stage of an ultra-relativistic heavy ion collision was studied. Research on glueball masses in QCD, the first Chern number of the normal bundle of work surface of a string, and computation of the rate of baryogenesis via processes involving homotopically nontrivial paths on configuration space is also reported. Problems arising from the application of high energy physics to the study of cosmology are also studied
Theoretical study of physical and thermodynamic properties of AlnNm clusters*
Loukhovitski, Boris I.; Sharipov, Alexander S.; Starik, Alexander M.
2016-11-01
Geometrical structures and physical properties, such as collision diameter, rotational constants, characteristic vibrational temperatures, dipole moment, static isotropic polarizability, enthalpy of formation of various forms of AlnNm clusters with n = 0,...,5, m = 0,...,5, are analyzed with the usage of density functional theory. Different isomeric forms of these clusters with the isomerization energy up to 5 eV have been identified by using the original multistep heuristic algorithm that was based on semiempirical calculations, ab initio and density functional theory approaches and comprises the elements of genetic algorithms. Temperature dependencies of enthalpy, entropy and specific heat capacity have been calculated both for the individual isomers and for the Boltzmann ensemble of each class of clusters taking into account the anharmonicity of cluster vibrations and the contribution of excited electronic states of clusters. Novel criterion of the stability of isomeric forms, based on the maximal vibrational energy of the modes of cluster, has been proposed. The potentialities of the application of small AlnNm clusters as the components of energetic materials are also considered. Supplementary material in the form of one zip file available from the Journal web page at http://dx.doi.org/10.1140/epjd/e2016-70429-5
Energy Technology Data Exchange (ETDEWEB)
Bodek, A.; Ferbel, T.; Melissinos, A.C.; Slattery, P.; Tipton, P.; Das, A.; Hagen, C.R.; Rajeev, S.G.; Okubo, S.; Orr, L.
1993-05-01
The various components of the high-energy physics research program at the University of Rochester are presented. (I)Fixed-target experimentation at FNAL includes studies of direct photon production by p and {pi} on H, Be, and Cu, and hybrid mesons and other physics issues in Coulomb excitation at high energies. (II)The status of the GEM (Gammas, Electrons, and Muons) Experiment at the SSC is given. (III)The D-Zero experiment at FNAL is reviewed. (IV)Deep inelastic lepton--nucleon scattering experiments are summarized: electron scattering experiments at SLAC, FNAL neutrino quad triplet runs, FNAL neutrino sign selected experiments, and SDC cosmic ray test and test beam calibration. (V)Studies of nonlinear QED at SLAC concentrated on a study of QED at critical field strength in intense laser--high-energy electron collisions. (VI)Development work on the Collider Detector at Fermilab (CDF) emphasized the CDF silicon vertex detector, the end plug calorimeter, and the SDC tile/fiber calorimetry. (VII)The theoretical physics effort is sketched.
Yang, Jing-Hu; Yu, Xiang; Yang, Yi; Yang, Zeng-Qiang
2018-01-01
Underground coal mining activities are prone to cause movement and breakage in geological strata and also lead to mining subsidence and even ground fissures. Along the direction working panel advancing, ground fissures may occur in roof in front and/or behind working panel. However, the investigations of previous similarity tests in lab only emphasize on the region behind working panel. By improving strata material property in construction and mounting artificial pressure devices, two physical simulation tests were conducted and successfully investigated the simulated results. Then, the mechanical model of "cantilever beam and elastic foundation beam" was proposed to calculate the stress distribution and the crack initiation angle in overlying strata and it well explains the mechanisms of ground fissures generation and propagation. Results show that, the maximum internal force in roof always occurred in front of working panel. However, because the void space in gob due to excavation is large enough to cause the bend and rotation of roof strata, compare to the triaxially compressed region in front of working panel, the roof always broke off at some positions above gob since the stress concentration resulting from such bend and rotation of strata could easily reach the limit strength of strata rocks. Also, the length of cantilever beam changed dynamically as respect to the panel advancing and the breakage intervals. Thus, the breakage position where the internal force first reached the limit tensile strength is not fixed and there will be two different kinds of relative positions between the crack initiation point and the working panel. The crack initiation direction is always perpendicular to the internal force, and the crack propagation direction is affected by the initiation angle, overburden-separation degree and the position of the hydraulic shields. If there is no overburden-separation or less, the roofs will break off as a composite beam and the propagation
Yu, Xiang; Yang, Yi; Yang, Zeng-Qiang
2018-01-01
Underground coal mining activities are prone to cause movement and breakage in geological strata and also lead to mining subsidence and even ground fissures. Along the direction working panel advancing, ground fissures may occur in roof in front and/or behind working panel. However, the investigations of previous similarity tests in lab only emphasize on the region behind working panel. By improving strata material property in construction and mounting artificial pressure devices, two physical simulation tests were conducted and successfully investigated the simulated results. Then, the mechanical model of “cantilever beam and elastic foundation beam” was proposed to calculate the stress distribution and the crack initiation angle in overlying strata and it well explains the mechanisms of ground fissures generation and propagation. Results show that, the maximum internal force in roof always occurred in front of working panel. However, because the void space in gob due to excavation is large enough to cause the bend and rotation of roof strata, compare to the triaxially compressed region in front of working panel, the roof always broke off at some positions above gob since the stress concentration resulting from such bend and rotation of strata could easily reach the limit strength of strata rocks. Also, the length of cantilever beam changed dynamically as respect to the panel advancing and the breakage intervals. Thus, the breakage position where the internal force first reached the limit tensile strength is not fixed and there will be two different kinds of relative positions between the crack initiation point and the working panel. The crack initiation direction is always perpendicular to the internal force, and the crack propagation direction is affected by the initiation angle, overburden-separation degree and the position of the hydraulic shields. If there is no overburden-separation or less, the roofs will break off as a composite beam and the
Figueroa, R G; Valente, M
2015-09-21
The main purpose of this work is to determine the feasibility and physical characteristics of a new teletherapy device of radiation therapy based on the application of a convergent x-ray beam of energies like those used in radiotherapy providing highly concentrated dose delivery to the target. We have denominated it Convergent Beam Radio Therapy (CBRT). Analytical methods are developed first in order to determine the dosimetry characteristic of an ideal convergent photon beam in a hypothetical water phantom. Then, using the PENELOPE Monte Carlo code, a similar convergent beam that is applied to the water phantom is compared with that of the analytical method. The CBRT device (Converay(®)) is designed to adapt to the head of LINACs. The converging beam photon effect is achieved thanks to the perpendicular impact of LINAC electrons on a large thin spherical cap target where Bremsstrahlung is generated (high-energy x-rays). This way, the electrons impact upon various points of the cap (CBRT condition), aimed at the focal point. With the X radiation (Bremsstrahlung) directed forward, a system of movable collimators emits many beams from the output that make a virtually definitive convergent beam. Other Monte Carlo simulations are performed using realistic conditions. The simulations are performed for a thin target in the shape of a large, thin, spherical cap, with an r radius of around 10-30 cm and a curvature radius of approximately 70 to 100 cm, and a cubed water phantom centered in the focal point of the cap. All the interaction mechanisms of the Bremsstrahlung radiation with the phantom are taken into consideration for different energies and cap thicknesses. Also, the magnitudes of the electric and/or magnetic fields, which are necessary to divert clinical-use electron beams (0.1 to 20 MeV), are determined using electromagnetism equations with relativistic corrections. This way the above-mentioned beam is manipulated and guided for its perpendicular impact
Directory of Open Access Journals (Sweden)
R. Hohl
2005-07-01
Full Text Available The widespread belief that intense exercise causes the production of lactic acid that contributes to acidose is erroneous. This belief, carried out by physical education and other professionals, interferes on methods of training and raise the opinion that muscle lactate is the vilain of exercise fatigue. For a theorical approach we show a structural illustration of all the glycolysis reactions with enphasis to phosphoglycerate kinase reaction wich envolves a simple phosphate transfer from the first carbon of1,3 bisphosphoglycerate to ADP, forming ATP. The carboxyl group of 3 phosphoglycerate remains unprotonated for the remaining intermediates of glycolisis. From this biochemical fact it is impossible the production of acid lactic causing the release of a proton. Actually, glycolysis releases 2 protons and lactate formation consumes 2 protons. After this biochemical explanation we present three illustrated exercises situations: low intensity, anaerobic threshold and high intensity exercise. From this point the students can understand that the protons came mainly from the ATP hydrolysis and when the ATP demand for muscle contraction is met by mithocondrial respiration, there is no proton accumulation in the cell as protons are used by mithocondria to maintain the proton gradient in the intermem- branous space. When the ATP hydrolysis exceeds mithocondria buffering capacity and ATP demand is supplied by nonmithocondrial sources, protons increase inside the cell causing acidoses. Lactate production increases under these cellular conditions to prevent pyruvate accumulation and supply the NAD+ for glycolysis. Lactate also retards the acidoses by the symport with protons (from ATP hydrolysys not from lactate production mediated by Lactate Transporters (MCT. Thus,
Energy Technology Data Exchange (ETDEWEB)
Cline, D.B.
1993-10-01
Progress on seven tasks is reported. (I)UCLA hadronization model, antiproton decay, PEP4/9 e{sup +}e{sup {minus}} analysis: In addition to these topics, work on CP and CPT phenomenology at a {phi} factory and letters of support on the hadronization project are included. (II)ICARUS detector and rare B decays with hadron beams and colliders: Developments are summarized and some typcial events as shown; in addition, the RD5 collaboration at CERN and the asymmetric {phi} factory project are sketched. (III)Theoretical physics: Feynman diagram calculations in gauge theory; supersymmetric standard model; effects of quantum gravity in breaking of global symmetries; models of quark and lepton substructure; renormalized field theory; large-scale structure in the universe and particle-astrophysics/early universe cosmology. (IV)H dibaryon search at BNL, kaon experiments (E799/KTeV) at Fermilab: Project design and some scatterplots are given. (V)UCLA participation in the experiment CDF at Fermilab. (VI)Detectors for hadron physics at ultrahigh energy colliders: Scintillating fiber and visible light photon counter research. (VII)Administrative support and conference organization.
International Nuclear Information System (INIS)
Rebhan, E.
2005-01-01
The present second volume treats quantum mechanics, relativistic quantum mechanics, the foundations of quantum-field and elementary-particle theory as well as thermodynamics and statistics. Both volumes comprehend all fields, which are usually offered in a course about theoretical physics. In all treated fields a very careful introduction to the basic natural laws forms the starting point, whereby it is thoroughly analysed, which of them is based on empirics, which is logically deducible, and which role play basic definitions. Extendingly the matter extend of the corresponding courses starting from the relativistic quantum theory an introduction to the elementary particles is developed. All problems are very thoroughly and such extensively studied, that each step is singularly reproducible. On motivation and good understandability is cared much about. The mixing of mathematical difficulties with problems of physical nature often obstructive in the learning is so circumvented, that important mathematical methods are presented in own chapters (for instance Hilbert spaces, Lie groups). By means of many examples and problems (for a large part with solutions) the matter worked out is deepened and exercised. Developments, which are indeed important, but seem for the first approach abandonable, are pursued in excurses. This book starts from courses, which the author has held at the Heinrich-Heine university in Duesseldorf, and was in many repetitions fitted to the requirements of the students. It is conceived in such a way, that it is also after the study suited as dictionary or for the regeneration
Theoretical high energy physics
International Nuclear Information System (INIS)
Lee, T.D.
1993-01-01
Brief reports are given on the work of several professors. The following areas are included: quantum chromodynamics calculations using numerical lattice gauge theory and a high-speed parallel computer; the ''spin wave'' description of bosonic particles moving on a lattice with same-site exclusion; a high-temperature expansion to 13th order for the O(4)-symmetric φ 4 model on a four-dimensional F 4 lattice; spin waves and lattice bosons; superconductivity of C 60 ; meson-meson interferometry in heavy-ion collisions; baryon number violation in the Standard Model in high-energy collisions; hard thermal loops in QCD; electromagnetic interactions of anyons; the relation between Bose-Einstein and BCS condensations; Euclidean wormholes with topology S 1 x S 2 x R; vacuum decay and symmetry breaking by radiative corrections; inflationary solutions to the cosmological horizon and flatness problems; and magnetically charged black holes
Energy Technology Data Exchange (ETDEWEB)
Rost, E.; Shephard, J.R.
1992-08-01
This report discusses the following topics: Exact 1-loop vacuum polarization effects in 1 + 1 dimensional QHD; exact 1-fermion loop contributions in 1 + 1 dimensional solitons; exact scalar 1-loop contributions in 1 + 3 dimensions; exact vacuum calculations in a hyper-spherical basis; relativistic nuclear matter with self- consistent correlation energy; consistent RHA-RPA for finite nuclei; transverse response functions in the {triangle}-resonance region; hadronic matter in a nontopological soliton model; scalar and vector contributions to {bar p}p {yields} {bar {Lambda} {Lambda}} reaction; 0+ and 2+ strengths in pion double-charge exchange to double giant-dipole resonances; and nucleons in a hybrid sigma model including a quantized pion field.
Energy Technology Data Exchange (ETDEWEB)
Gottlieb, S.A.; Hendry, A.W.; Kostelecky, V.A.; Lichtenberg, D.B.
1992-04-01
We have carried out research in lattice gauge theory, superstring theory, supersymmetry, the solar neutrino puzzle, QCD perturbation theory, and phenomenological models of hadrons. In this report, we summarize our work in each of these areas.
Research in theoretical physics
International Nuclear Information System (INIS)
Robson, D.; Williams, A.G.
1991-01-01
This report discusses: hamiltonian lattice gauge theory; relativistic potential model; chiral potential models; covariant dynamical chiral symmetry breaking models of hadronic structure; light-cone calculations and models; and strangeness in the nucleon. LSP
International Nuclear Information System (INIS)
Kunz, P.D.
1990-10-01
This report contains small papers on the following topics: ground state correlations of nuclei in relativistic random phase approximation; instability of infinite nuclear matter in the relativistic hartree approximation; charge density differences for nuclei near 208 Pb in relativistic models; meson exchange current corrections to magnetic moments in quantum hadro-dynamics; analysis of the O + → O - reaction at intermediate energies; contributions of reaction channels to the 6 Li(p,γ) 7 Be Reaction; deformed chiral nucleons; vacuum polarization in a finite system; second order processes in the (e,e'd) reaction; sea contributions in Dirac RPA for finite nuclei; and momentum cutoffs in the sea
Theoretical physics. Field theory
International Nuclear Information System (INIS)
Landau, L.; Lifchitz, E.
2004-01-01
This book is the fifth French edition of the famous course written by Landau/Lifchitz and devoted to both the theory of electromagnetic fields and the gravity theory. The talk of the theory of electromagnetic fields is based on special relativity and relates to only the electrodynamics in vacuum and that of pointwise electric charges. On the basis of the fundamental notions of the principle of relativity and of relativistic mechanics, and by using variational principles, the authors develop the fundamental equations of the electromagnetic field, the wave equation and the processes of emission and propagation of light. The theory of gravitational fields, i.e. the general theory of relativity, is exposed in the last five chapters. The fundamentals of the tensor calculus and all that is related to it are progressively introduced just when needed (electromagnetic field tensor, energy-impulse tensor, or curve tensor...). The worldwide reputation of this book is generally allotted to clearness, to the simplicity and the rigorous logic of the demonstrations. (A.C.)
International Nuclear Information System (INIS)
Gottlieb, S.A.
1990-05-01
My research in lattice gauge theory during the past year is described. Several projects were completed dealing with QCD simulations including dynamical fermions. Under the DOE Grand Challenge program, a large scale calculation of the QCD spectrum with two light flavors of dynamical staggered quarks was carried out. This calculation is one of the most significant efforts to data to take into account the effects of dynamical fermions. Smaller lattice spacing and lighter quark masses were used than in previous attempts. QCD thermodynamics was studied on the ST-100 array processor and on an ETA supercomputer at the John von Neumann Supercomputer Center. On the ST-100, a study with two flavors of dynamical staggered quarks with am q = 0.025 and 0.0125 was carried out on a 12 3 x 8 lattice. These results give a rough estimate of the crossover couplings where we see the restoration of chiral symmetry. A study of QCD with dynamical Wilson fermions was carried out with N t = 4 to try to bring the study of QCD with dynamical Wilson fermions to the level that has been attained with staggered fermions over the past two years. We have calculated screening lengths to elucidate the properties of the high temperature phase. In the pure gluon theory, claims that the finite temperature deconfinement transition is second order, rather than first order, were investigated using a finite size scaling analysis. Our results support a first order transition. Finally, work was done to port computer code to new environments involving parallelism in order to pursue more ambitious calculations on more powerful hardware than the ST-100 and ETA10 used for the calculations reported here
International Nuclear Information System (INIS)
Gottlieb, S.A.; Hendry, A.W.; Kostelecky, V.A.; Lichtenberg, D.B.
1992-04-01
We have carried out research in lattice gauge theory, superstring theory, supersymmetry, the solar neutrino puzzle, QCD perturbation theory, and phenomenological models of hadrons. In this report, we summarize our work in each of these areas
Fuir la complétude ou Le métarécit intermédial des Faux-monnayeurs
Directory of Open Access Journals (Sweden)
Antonio Viselli
2014-12-01
Full Text Available Les Faux-monnayeurs d’André Gide est un (anti-roman qui fait appel à un autre médium artistique amimétique – en l’occurrence la musique – afin de mettre en question la représentation de l’authenticité, du réel et de la subjectivité de l’écrivain. Édouard, le protagoniste romancier qui souhaite lui-même rédiger un roman intitulé Les Faux-monnayeurs, se trouve plongé dans une mise-en-abîme où le récit linéaire contrapuntique déjà complexe se colore d’ambiguïté narrative grâce à une polyphonie verticale : et ce, par le biais de l’axe paradigmatique, des récits emboîtés et de l’usage du discours indirect libre. Gide réalise, au moins en partie, le rêve d’Édouard paralysé par la page blanche : terminer l’œuvre de Bach, L’Art de la fugue, en littérature. C’est-à-dire, que d’un point de vue intermédial, Gide emploie une poétique de la fugue – style musical théoriquement interminable – afin de subvertir le genre romanesque. L’intermédialité rejoint l’interdisciplinarité et, en appliquant le théorème mathématique et philosophique de Kurt Gödel – son théorème de l’incomplétude –, la verticalité textuelle, synonyme de métarécit chez Gide, se déploie dans toute son éloquence et renforce davantage la thématique du « faux » et de la « copie » dans un roman contrefait. Fleeing Completeness or The Intermedial Metanarrative of Les Faux-monnayeurs André Gide’s Les Faux-monnayeurs is a (anti-novel that calls upon another amimetic artistic medium – music – in order to question the representation of authenticity, of the real, and of the novelist’s subjectivity. The novel’s protagonist, Édouard, wishes to write a novel entitled Les Faux-monnayeurs, and finds himself at the bottom of a mise-en-abîme where the already complex contrapuntal narrative becomes further ambiguous alongside examples of vertical polyphony: such as the paradigmatic axis, framed
Rôle de la Nature de l’Information dans l’Intermédiation Bancaire
LaRGE
2004-01-01
On étudie le rôle du traitement de l’information dans le cadre de l’intermédiation financière bancaire. Dans ce contexte, on s’intéresse aux différentes solutions adoptées par les banques face aux différents types d’imperfections de l’information. On tente ensuite de mettre en évidence les différentes dimensions et natures de l’information disponible et produite, afin de dégager une typologie de l’information soft vs hard. Enfin, on discute alors les avantages et les inconvénients de ces deux...
van Reedt Dortland, Arianne K B; Peters, Lilian L; Boenink, Annette D; Smit, Jan H; Slaets, Joris P J; Hoogendoorn, Adriaan W; Joos, Andreas; Latour, Corine H M; Stiefel, Friedrich; Burrus, Cyrille; Guitteny-Collas, Marie; Ferrari, Silvia
2017-05-01
The INTERMED Self-Assessment questionnaire (IMSA) was developed as an alternative to the observer-rated INTERMED (IM) to assess biopsychosocial complexity and health care needs. We studied feasibility, reliability, and validity of the IMSA within a large and heterogeneous international sample of adult hospital inpatients and outpatients as well as its predictive value for health care use (HCU) and quality of life (QoL). A total of 850 participants aged 17 to 90 years from five countries completed the IMSA and were evaluated with the IM. The following measurement properties were determined: feasibility by percentages of missing values; reliability by Cronbach α; interrater agreement by intraclass correlation coefficients; convergent validity of IMSA scores with mental health (Short Form 36 emotional well-being subscale and Hospital Anxiety and Depression Scale), medical health (Cumulative Illness Rating Scale) and QoL (Euroqol-5D) by Spearman rank correlations; and predictive validity of IMSA scores with HCU and QoL by (generalized) linear mixed models. Feasibility, face validity, and reliability (Cronbach α = 0.80) were satisfactory. Intraclass correlation coefficient between IMSA and IM total scores was .78 (95% CI = .75-.81). Correlations of the IMSA with the Short Form 36, Hospital Anxiety and Depression Scale, Cumulative Illness Rating Scale, and Euroqol-5D (convergent validity) were -.65, .15, .28, and -.59, respectively. The IMSA significantly predicted QoL and also HCU (emergency department visits, hospitalization, outpatient visits, and diagnostic examinations) after 3- and 6-month follow-up. Results were comparable between hospital sites, inpatients and outpatients, as well as age groups. The IMSA is a generic and time-efficient method to assess biopsychosocial complexity and to provide guidance for multidisciplinary care trajectories in adult patients, with good reliability and validity across different cultures.
Les temps de l’archivage de terrain. Les documents intermédiaires, du papier à l’ordinateur
Directory of Open Access Journals (Sweden)
Georges Augustins
2008-08-01
Full Text Available Les temps de l’archivage de terrain. Les documents intermédiaires, du papier à l’ordinateur. La revisite de terrains ethnologiques passés fournit l’occasion de faire le point sur les méthodes employées et leur évolution entre deux moments de la recherche. Elle permet également le passage et la continuité des travaux d’un ethnologue vers un autre. Nous traiterons ces deux angles au travers d’une expérience concrète réalisée sur les travaux ethnologiques des Baronnies de Bigorre. Outre les présentations des deux enquêtes de terrain, la première effectuée de 1974 à 1976 et la seconde fin 2005/début 2006, nous interrogerons les différences dans la pratique ethnographique et les raisons du changement, puis nous nous poserons la question de l’utilisation des documents intermédiaires du premier ethnologue par le second.The times of archiving the fieldwork. Intermediary documents, from paper to computer. Revisiting areas studied by anthropologists in the past provides an opportunity to take stock of the methods used and how they have evolved between two periods of research. It also enables work to continue and be passed from one anthropologist to another. We shall look at both these angles using an actual experiment carried out on the ethnological work in the Baronnies de Bigorre region. As well as presenting both of the field surveys, the first carried out from 1974 to 1976 and the second from the end of 2005 into early 2006, we shall be examining the differences in ethnological practices and the reasons behind these changes, and then looking at how the second anthropologist has made use of the first anthropologist’s intermediary documents.
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Nolting, Wolfgang [Humboldt-Universitaet, Berlin (Germany). Inst. fuer Physik
2012-07-01
The favourite basic course theoretical physics covers in seven volumes all for the diploma and bachelor/master curricula decisive fields. Each volume mediates well considerably the theoretic-physical knowledge necessary in each semester. Numerous exercise problems with extended solutions serve for the deepening of the matter. The second part of the fifth volume deals with application and the extension of the concept of quantum mechanics developed in the first part. The present new edition contains some new problems, was worked out, and supplemented. It makes by the two-colour presentation a very distinct and fast access to the subject of teaching.
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Liping Shi
2015-04-01
Full Text Available Compared with the traditional actuator of machinery and electricity, the piezoelectric actuator has the advantages of a compact structure, small volume, no mechanical friction, athermancy and no electromagnetic interference. Therefore, it has high application value in the fields of MEMS, bioengineering, medical science and so on. This article draws conclusions from the influence of multiple piezoelectric effects on the physical parameters (dielectric coefficient, equivalent capacity, energy conversion and piezoelectric coefficient of piezoelectric actuators. These data from theoretical and experimental research show the following: (1 The rate between the dielectric coefficient of piezoelectric in mechanical freedom and clamping is obtained from the secondary direct piezoelectric effect, which enhances the dielectric property, increases the dielectric coefficient and decreases the coefficient of dielectric isolation; (2 Under external field, E n ( ex = E 1 , exterior stress T = 0, that is to say, under the boundary condition of mechanical freedom, piezoelectric can store electric energy and elasticity, which obtains power density, elastic density and an electromechanical coupling factor; (3 According to the piezoelectric strain S i ( 1 , piezoelectric displacement D m ( 2 and piezoelectric strain S i ( 3 of multiple piezoelectric effects, when the dielectric coefficient of the first converse piezoelectric effect ε33 is 1326 and the dielectric coefficient of the secondary direct piezoelectric effect increases to 3336, the dielectric coefficient of the ceramic chip increases. When the piezoelectric coefficient of the first converse piezoelectric effect d33 is 595 and the piezoelectric coefficient of the secondary direct piezoelectric effect decreases to 240, the piezoelectric coefficient of the ceramic chip will decrease. It is of major significance both in the applications and in basic theory to research the influence of multiple piezoelectric
International Nuclear Information System (INIS)
1986-01-01
A return of only three manuscripts from fourteen contributions to the Theoretical Seminar held in Potchefstroom did not warrant the normal publication of our proceedings in 1985. Mainly as a result of the very fine response received this year (1986) we are in a position to publish once again our proceedings. The three papers delivered on the 1985 Theoretical Physics Seminar include themes such as determinant and classical polynomials, the Wigner function formalism in quantum theory and eigenvalues. Seminars delivered on the 1986 Seminar include information on nuclear structures, quarks and quantum mechanics, field theory, invariance principles and symmetries, radioactive decay, nuclear moments, spin, and nuclear models. Thirteen papers that were delivered on the 1986 Theoretical Physics Seminar are published in this volume
Motl, Robert W.
2007-01-01
The study of physical activity behavior in youth generally lacks a sufficient theoretical foundation for examining variables that influence that behavior. This is a major limitation because theory guides the search for determinants of behavior and the subsequent interplay between research findings and application. Theory offers a systematically…
Meixner, Uwe
2014-01-01
Quantum physics, unlike classical physics, suggests a non-physicalistic metaphysics. Whereas physicalism implies a reductive position in the philosophy of mind, quantum physics is compatible with non-reductionism, and actually seems to support it. The essays in this book explore, from various points of view, the possibilities of basing a non-reductive philosophy of mind on quantum physics.
Neysen, Nicolas; Wautelet, Yves; Achbany, Youssef
2007-01-01
Guidée par sa volonté d’étudier comment les divers processus d’intermédiation sont affectés par les réseaux électroniques et comment ils évoluent au fil du temps, cette recherche poursuit un double objectif. Le premier, d’approche explicative, s’attache à l’étude de l’évolution de l’intermédiation électronique. Le but étant de percevoir dans quelle mesure le contexte propre à l’échange virtuel, influence le rôle de l’intermédiaire dans la réponse qu’il apporte aux besoins des acte...
DEFF Research Database (Denmark)
Midtgaard, Julie
2013-01-01
BACKGROUND: Sedentary behaviour and reduced exercise capacity are potential persisting effects of anti-cancer therapy that may predispose to serious health conditions. It is well-established that physical exercise may prevent some of these problems. However, the extent to which cancer survivors...... are able to adopt long-term physical activity habits depends largely on their motivation. AIM: This theoretical paper aims to outline how researchers and practitioners can draw from Antonovsky's salutogenetic theory and White & Epston's Narrative Therapy to develop and implement intervention efforts...... of regular physical activity in post-therapy cancer survivors is briefly presented including a brief review of the theoretical rationale behind the psychological component of the intervention, i.e. a narrative-based exercise counselling programme. Subsequently, particular attention is given to the core...
Grammaire progressive du français corrigés : niveau intermédiaire : avec 680 exercices
Thiévenaz, Odile
2013-01-01
Les corrigés de la 3e édition de la Grammaire progressive du français - niveau intermédiaire Ce qui fait le succès de cette grammaire : Une organisation claire : la leçon de grammaire sur la page de gauche ; les exercices d'entraînement sur la page de droite ; 52 chapitres présentant les points généralement abordés aux niveaux A2 et B1 du Cadre européen commun de référence pour les langues ; Un apprentissage progressif : il suit la progression naturelle des méthodes de français ; Un usage souple : pour la classe ou en auto-apprentissage ; Une préparation adaptée aux certifications : un entraînement efficace pour mieux réussir aux examens ; Une large place faite à l'évaluation : de nombreux exercices de révision et des bilans réguliers. À découvrir dans cette troisième édition tout en couleurs (ISBN 978 209 038 124 5) : Un CD audio avec 14 documents sonores ; 80 nouveaux exercices et activités communicatives ; Des chapitres révisés et des exercices plus variés ; Un test d'�...
International Nuclear Information System (INIS)
Corradini, Antonella; Meixner, Uwe
2014-01-01
Quantum physics, in contrast to classical physics, allows non-locality and indeterminism in nature. Moreover, the role of the observer seems indispensable in quantum physics. In fact, quantum physics, unlike classical physics, suggests a metaphysics that is not physicalism (which is today's official metaphysical doctrine). As is well known, physicalism implies a reductive position in the philosophy of mind, specifically in its two core areas, the philosophy of consciousness and the philosophy of action. Quantum physics, in contrast, is compatible with psychological non-reductionism, and actually seems to support it. The essays in this book explore, from various points of view, the possibilities of basing a non-reductive philosophy of mind on quantum physics. In doing so, they not only engage with the ontological and epistemological aspects of the question but also with the neurophysiological ones.
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Corradini, Antonella [Catholic Univ., Milan (Italy); Meixner, Uwe (ed.) [Augsburg Univ. (Germany)
2014-07-01
Quantum physics, in contrast to classical physics, allows non-locality and indeterminism in nature. Moreover, the role of the observer seems indispensable in quantum physics. In fact, quantum physics, unlike classical physics, suggests a metaphysics that is not physicalism (which is today's official metaphysical doctrine). As is well known, physicalism implies a reductive position in the philosophy of mind, specifically in its two core areas, the philosophy of consciousness and the philosophy of action. Quantum physics, in contrast, is compatible with psychological non-reductionism, and actually seems to support it. The essays in this book explore, from various points of view, the possibilities of basing a non-reductive philosophy of mind on quantum physics. In doing so, they not only engage with the ontological and epistemological aspects of the question but also with the neurophysiological ones.
International Nuclear Information System (INIS)
Fried, B.D.; Dawson, J.M.; Weng, A.Y.; Chen, F.F.
1975-01-01
Summaries of research work during this report period are given for the following topics: (1) theoretical studies, (2) laser-plasma studies, (3) computer simulation of plasmas, and (4) experiments on plasma properties and plasma heating. (U.S.)
Midtgaard, Julie
2013-02-01
Sedentary behaviour and reduced exercise capacity are potential persisting effects of anti-cancer therapy that may predispose to serious health conditions. It is well-established that physical exercise may prevent some of these problems. However, the extent to which cancer survivors are able to adopt long-term physical activity habits depends largely on their motivation. This theoretical paper aims to outline how researchers and practitioners can draw from Antonovsky's salutogenetic theory and White & Epston's Narrative Therapy to develop and implement intervention efforts centered on promotion of long-term physical activity behaviour, while at the same time increasing the individual cancer survivor's sense of meaning and personal health resources. The Copenhagen PACT (Physical Activity after Cancer Treatment) Study targeting adoption and maintenance of regular physical activity in post-therapy cancer survivors is briefly presented including a brief review of the theoretical rationale behind the psychological component of the intervention, i.e. a narrative-based exercise counselling programme. Subsequently, particular attention is given to the core principles, different components and structure of the counselling manual including sample questions and examples of written documents that have emanated from the individual counselling sessions. The discussion includes consideration of some methodological challenges that arise when attempting to evaluate narrative-based interventions in the context of physical activity promotion in cancer rehabilitation and survivorship care.
Cheng, Neal
A detailed investigation into the interaction between highly ionizing x-ray radiation and nanomaterials was performed. To begin, a theoretical model of the interactions of the system was created as an attempt to understand the relationship between the nanomaterial and the radiation-generated species. The model spans from the physical regime (10-10 s), during which the chemical species generated from radiolytic cleavage of water diffuses and reacts. A combination of methods was used in the simulation: Monte Carlo, Brownian diffusion, and kinetic rate equations. Several experimental systems were created for the purpose of testing the radio-enhancing effects of nanomaterials and the validity of the model: Firstly, the effects of localized energy deposition by gold nanoparticles were examined in a system consisting of 3 nm gold nanoparticles conjugated to DNA. In this system, single-strand breaks on DNA were used to probe the spatial distribution of energy nanometers around the nanoparticle. A comparison of the local energy deposition by gold nanoparticles versus global energy deposition by water was examined using the model. An additional 150% in DNA strand breaks was observed at 100 mM Tris (2-Amino-2-hydroxymethyl-propane-1,3-diol, represents 5nm diffusion distance), yet according to the model, the energy deposition of 10 gold nanoparticles on a strand of DNA accounts for only an additional 20%. Several explanations were given, such as the different reactivity of radical at short distance, the cross-linking of multiple DNA to a single nanoparticle, and geometric configuration of DNA. Secondly, the effect of remote energy deposition was examined in a system consisting of gold nanotubules and free-floating DNA, containing a composition of 50 wt.% Au/50 wt.% H2O. There was no localized energy deposition due to non-conjugation and a maximum enhancement of 1400% was found at 10 mM Tris, which was inconsistent with the expected enhancement of ˜14000%. The result was
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José R. N. Chiappin
2017-06-01
Full Text Available The aim of this paper is to present Duhem’s critical view of the dynamical development of mechanics according to two principles of his theory of the development of physics: the continuous and the rational development of physics. These two principles impose a formal conception of physics that aims at demarcating physics from the metaphysical view on the one hand and the pragmatist/conventionalist view on the other hand. Duhem pursues an intermediary conception of physics, a representational system of empirical laws based upon formal principles. This formal conception of physics will adjust to his idea of scientific progress in the form of a sequence of representational systems as structures of increasing comprehensiveness of empirical laws, which leads him to defend a convergent structural realism pointing to an ideal physical theory.
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Nolting, Wolfgang [Humboldt-Universitaet, Berlin (Germany)
2015-07-01
The basic course theoretical physics, quantum mechanics covers the following issues: quantum theory of angular momentum: orbital angular momentum, spin, relativistic theory of the electron, addition of momentum; central potential: fundamentals, coulomb potential, spherical symmetric potential well, the free particle; approximation procedures: variational method, time independent perturbation theory, time dependent (Dirac) perturbation theory, quasi-classical approximation (WKB method); many-particle systems: identical particles, second quantization, applications; scattering theory: fundamentals, partial waves method, integral equations for scattering problems, formal scattering theory.
International Nuclear Information System (INIS)
Rosner, J.L.; Sachs, R.G.
1988-12-01
This paper briefly discusses topics in high energy physics in the following areas: hadron spectroscopy; collider physics; CP violation; minor fermions; field theories; string dynamics; radiative kaon decays; electromagnetic properties of baryons; electric dipole moments of the neutron; and high temperature superconductivity
Cullen, Katherine
2005-01-01
Defined as the scientific study of matter and energy, physics explains how all matter behaves. Separated into modern and classical physics, the study attracts both experimental and theoretical physicists. From the discovery of the process of nuclear fission to an explanation of the nature of light, from the theory of special relativity to advancements made in particle physics, this volume profiles 10 pioneers who overcame tremendous odds to make significant breakthroughs in this heavily studied branch of science. Each chapter contains relevant information on the scientist''s childhood, research, discoveries, and lasting contributions to the field and concludes with a chronology and a list of print and Internet references specific to that individual.
International Nuclear Information System (INIS)
Lopez, Adlin; Gonzalez, Joaquin; Torres, Leonel; Fraxedas, Roberto; Varela, Consuelo; Freixas, Vivian.
2008-01-01
Full text: Using national and international recommendation about human resource in nuclear medicine, a group of experts organized a national course for the education and training of physicist who works in Cuban hospital, adapted to national condition and practice of nuclear medicine. The program was approved for National Authorities in Nuclear Security and University School in Medicine and content three intensive theoretic and practical courses (15 days of full time duration each), complemented with 4 months full time in Nuclear Medicine Service monitored by accredited expert and 2 months at distance with practical task. The theoretical/practical intensive courses have final evaluation: combining practical exercise and write final test. When all docent activities finish the students should pass a final evaluation by a testing board composed for (at least) three accredited experts. The first theoretical/practical course included 19 physicists who work in hospital, the second 17 and the third 16 students. With 100 point of maximum score and 60 point minimum to pass, the partial final tests included: true or false choice (with 10 aspects to verify, 1 point/correct answer) and questions to write developed answer. The average result was 83.02 points/ students (range 65-100 points). The students evaluated satisfactory the quality of different courses (in anonymous poll), reporting like very good; the quality of conferences, excellent; the usefulness of different charters, very good; the support bibliography, and recommended the repetition of this kind of education and training in order to warranty the human resource, in the same way and content, and included others item in the future. Conclusion: the theoretical/practice intensive courses of this post-graduated course were successful and satisfied the objective of education and training of medical physicist in nuclear medicine. (author)
Güttinger, Werner; Cin, Mario
1974-01-01
This volume is the record and product of the Summer School on the Physics and Mathematics of the Nervous System, held at the International Centre for Theoretical Physics in Trieste from August 21-31, 1973, and jointly organized by the Institute for Information Sciences, University of Tlibingen and by the Centre. The school served to bring biologists, physicists and mathemati cians together to exchange ideas about the nervous system and brain, and also to introduce young scientists to the field. The program, attended by more than a hundred scientists, was interdisciplinary both in character and participation. The primary support for the school was provided by the Volkswagen Foundation of West Germany. We are particularly indebted to Drs. G. Gambke, M. -L Zarnitz, and H. Penschuck of the Foundation for their in terest in and help with the project. The school also received major support from the International Centre for Theoretical Physics in Trieste and its sponsoring agencies, including the use of its exce...
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Rusmir Mrković
2011-03-01
Full Text Available The aim of this research is to establish a relation in-between the basic physical capabilities and the theoretic knowledge laws of the game with the success in refereeing of football referees of the Sarajevo Canton. The population from which samples were taken are football referees of the Sarajevo Canton, 90 of them, age span from 18- 45 years of age and who have met the criteria for getting a license to be referees in football matches in the next season at all levels of competition in Bosnia and Herzegovina. The sample of variables in this research covers areas of basic motorics (18, theoretic knowledge laws of the games (17 and the estimate of success in refereeing in football games (7 variables. The results of the final analysis show that the whole system of variables which in this research represent basic physical capabilities and the knowledge Laws of the game by the football referees of the Sarajevo Canton has a statistical connection with the system of variables which in this research makes the success of refereeing of football referees. Since football is an activity that has almost the most complexity (referees are a part of football, we can say that the selected system of variables has a relatively good connection for success and that these variables are very important in order for one referee to perform his task as good as possible at one match.. Of course during the training process attention should be given on the development of all basic physical capabilities, and not only one dimension of the physical area because in general we have to be physically and cognitively be present in order to finish the game at a high rhythm but making mistakes the least as possible
International Nuclear Information System (INIS)
Rosner, J.L.; Sachs, R.G.
1987-12-01
This paper briefly discusses the high energy physics work done at the University of Chicago. Certain topics discussed are: hadron spectroscopy, CP violation, neutral leptons, supersymmetry, magnetic moments of baryons and quarks, low energy effective field theories, electromagnetic properties of baryons and mass mixing of quarks and neutrinos
terSteege, MW; Stulen, [No Value
1997-01-01
Experiments with spinach (Spinacia oleracea L., cv. Subito) plants in which net nitrate uptake rate (NNUR) and nitrate influx and efflux were measured showed that handling the plants affected the results considerably. Both nitrate influx and efflux changed after physical manipulation of the plants,
Pourtalebi Hendehkhaleh, S.
2017-01-01
Cyber-physical systems are complex trans-disciplinary systems. Designing this kind of systems requires cooperation of several groups of experts with various backgrounds such as mechatronics and robotics, software engineering, data management, knowledge engineering, system on a chip, embedded
Jungnickel, Christa; McCormmach, Russell
Intellectual mastery of nature was the stated goal of the German physicists of the nineteenth century. In this first of two volumes, an attempt is made to bridge social, institutional, and intellectual history. Separate sections of the book deal with: (1) establishing physics at the universities; (2) German physicists before 1830; (3) promoting…
Papel dos cuidados intermÃ©dios num serviÃ§o de insuficientes respiratÃ³rios
Maria Fernanda Oliveira
2001-01-01
RESUMO: Na dÃ©cada de 60 surgiram na AmÃ©rica do Norte as primeiras Unidades de Cuidados IntermÃ©dios (UCInts) como resposta Ã pressÃ£o na gestÃ£o dos internamentos e aos custos crescentes das camas das Unidades de Cuidados Intensivos (UCIs). O novo modelo de organizaÃ§Ã£o proposto estabelece uma hierarquizaÃ§Ã£o dos diferentes nÃveis de cuidados â Enfermaria, UCInts e UCIs â com base nos recursos materiais e humanos disponibilizados, tendo como objectivo a continuidade no tratamento hospit...
Energy Technology Data Exchange (ETDEWEB)
Rosner, J.L.; Martinec, E.J.; Sachs, R.G.
1993-04-01
Brief narrative descriptions of work performed are given on numerous topics including the following: CP violation, Cabibbo--Kobayashi--Maskawa matrix, and B physics; radiative corrections and electroweak observables; heavy quark symmetry; heavy meson spectroscopy; composite models of quarks and leptons; supersymmetric quantum mechanics, inverse scattering, and the vertex operator; cosmological constraints on lepton-number violation in SO(10) models; black hole evaporation; the light cone in string theory; surfaces in the 3D Ising model; and conformal field theories.
International Nuclear Information System (INIS)
Horowitz, C.J.; Macfarlane, M.H.; Serot, B.D.
1989-01-01
In this period covered by this report (April 1, 1988 to March 31, 1989), work focused on six main areas: Relativistic Theories of Nuclear Structure and Saturation; Relativistic Descriptions of Proton- Nucleus and Electron-Nucleus Scattering; Nonrelativistic Theory of Nucleon-Nucleus Reactions; Gamow-Teller Excitations in Nuclear Charge- Exchange Reactions; Relativistic Many-Body Theory at Finite Temperature and Density and Relativistic Atomic Physics of High Z Atoms. Results and publications in these areas are summarized in this report
Neuber, Matthias
2013-01-01
As common wisdom has it, Pierre Duhem was one of the most important proponents of French philosophy of science around 1900. Usually, his conception of physical theories is regarded as the incarnation of the ancient - proto-positivistic - programme of "saving the phenomena". This view is correct, but it needs to be supplemented by taking account of the discursive context of Duhem's position. In this paper it is argued that Duhem's philosophical colleague Abel Rey played a central role in this connection.
Lulek, T.; Florek, W.; Lulek, B.
1997-07-01
The Table of Contents for the book is as follows: * Preface * Committees and Sponsors * Eugene Wigner and Translational Symmetries * PART A. GROUP ACTION ON SETS AND HIDDEN SYMMETRIES; BETHE ANSATZ * Physical Implications of Crystal Symmetry and Time Reversal * Bethe's Ansatz and the Marshall Rule * Symmetry Properties of Small Amounts of Matter: Clusters and Surface Reconstructions * Analyticity of Bloch and Wannier Functions -- Properties of Berry Phases * τ-Numeration, τ-Wavelets and Diffraction Formulas for the Fibonacci Chain * Dynamical Symmetry * Lorentz Group in Condensed Matter Physics * Geometric Properties of Potentials of Electric Charges * Quadratic Algebra as Dynamic Symmetry * Energy Eigenstates of High Symmetry Electron Systems by Means of Subspace Density Functionals * Optical Tensors in Spatially Modulated Magnetic Systems * Thermodynamic Properties of Spin Systems by Means of the Method of Hierarchy of Algebras * Isoenergetic Surfaces and the Density of States in Low-Symmetrical Crystals * Critical Comments on the Infinite Volume Limit * Orbit Spaces of Compact Linear Groups * The Orbit Space Approach to the Theory of Phase Transitions: The Non-Coregular Case * PART B. MOLECULAR PHYSICS, SYMMETRIC AND UNITARY GROUPS * Combinatorial Aspects of Representations of the Unitary Group * Plethysm in Physics and Chemistry Applications * Group Theory and the Meaning of Life? * Finite States and the Constructive Theory of Discrete Structures * Affine Kac-Moody Algebras and Their Representations * Quantum Systems with Finite Hilbert Space * Casimir Operators of the Unitary Group and Spectral Density Distribution Moments * Quasi-Exact Solvability of a System of Coupled Equations: The Canonical Form of the Rabi and E ⊗ ɛ Jahn-Teller Hamiltonians * Affine Kac-Moody Algebras and the D-Dimensional Hydrogen Atom * Symmetry Classification of Magnetic Excitations in Thulium Iron Garnet * Spectral Density of a Periodic J-Matrix * PART C. STATISTICS OF PARTICLES
International Nuclear Information System (INIS)
Salcher, R.
1999-05-01
The aim of this thesis was to produce a computer based training which allows the knowledge transfers of the theoretical and practical subjects of a radiation protection course according to the provisions of national law. An overview of the recent developments concerning 'Multimedia' is given in the first part of this work. General teaching methods and present-day national and international trends in information technology and instructional multimedia are analysed and differences between comparable methods are pointed out. The importance of producing computer based training courses by universities and external research centers is discussed. The basics of instructional multimedia and the authoring process are summarized and examples are given. An analysis of up-to-date authoring tools is also included. The individual modules of the developed computer based training like the transfer of two typical radiation protection experiments into a virtual counterpart are described in detail one by one (this partially also includes the specific programming solutions). The advantages of this form of knowledge transfer like the elimination of radiation risk by the use of virtual simulations are discussed. The efficiency of the knowledge transfer of this computer based training is verified by means of test persons. This project shows the potential of recent developments in the area of multimedia and information technology for the professional transfer of specific scientific know-how. (author)
International Nuclear Information System (INIS)
Lampre, Isabelle
1996-01-01
This research thesis reports the study of dimers formed in solution by aggregation of tri-aryl pyrylium salts, in order to establish a direct correlation between properties and electronic structure of components, on the one hand, and molecular pattern, on the other hand. The author adopted a multidisciplinary approach by using experimental techniques and calculations based on the excitonic theory and methods of quantum chemistry. First, the properties of the first excited states of cationic chromophores have been studied (characterisation of electronic transitions, relaxation at the singlet excited state, formation of triplet state). Then, the author analysed dimerisation processes and showed that each dimer is formed by two pairs of ions. She discusses some original optical properties of dimers. The geometry of dimers is theoretically determined by minimising the system interaction potential energy. Electronic transitions are then determined as linear combinations of transitions of two monomers. Properties are thus calculated and are in agreement with those deduced from spectral analysis. The experimentally noticed polarisation change and large Stokes displacement are then explained in terms of emission for a localised state on a chromophore [fr
International Nuclear Information System (INIS)
Feldman, D.; Fried, H.M.; Jevicki, A.; Kang, K.; Tan, C.I.
1986-01-01
This year's research has dealt with a side range of theoretical optics of current interest. New results include: an operator formulation of the covariant interacting string field theory of Witten the string and nonlinear sigma model connection; Kac-Moody and Virasoro algebras and their applications to string theories; compactified strings on group manifold as non-linear sigma models with Wess-Zumino terms and BRST quantization simplicial lattice formulation of gravity and strings; numerical studies of Polyakov strings and their Hausdorff dimensions; stability of vacuum energies for strings compactified on various tori; tests for topological features of string interactions for hadronic processes. Studies in strong coupling phenomena and the continuum description by the technique of infrared extraction, the structure of non-semisimple gauge theories and contracted gauge theories have been continued. Problems associated with the family structure of quarks and leptons, and the interface between cosmology and the grand unification of particle interactions have also been addressed: predictions on the fourth generation quarks; gauge model of fermion flavors and breaking patterns at axion scale; massive neutrinos and oscillations calculability problem in flavor mixings; axion emission for representative types of stars
International Nuclear Information System (INIS)
Seki, R.
1994-01-01
This paper discusses progress that has been made on the following seven problems: (1) (e, e'p) at high momentum transfer; (2) post,acceleration effects in two-nucleon interferometry of heavy-ion collisions; (3) pion-nucleus interactions above 0.5 GeV; (4) chiral symmetry breaking in nuclei and picnic atom anomaly; (5) atomic screening on nuclear astronomical reactions; (6) QCD related work (coherent pion production from skyrmion-antiskyrmion annihilation, QCD in 1 + 1 dimensions, and correlation functions in the QCD vacuum), and (7) kaonic hydrogen atom experiment. The problems deal with various topics mostly in intermediate-energy nuclear physics. We place priority on (1) and (2), and describe them somewhat in detail below. Other problems are our on-going projects, but we are placing lower priority on them in the second and third year
International Nuclear Information System (INIS)
Elster, C.
1994-08-01
The research supported by this grant includes application of many-body scattering theory to nuclear systems and studies of few-body systems described by effective hadronic field theories. During the second year of the current grant from the US Department of Energy considerable progress was made in bringing all first order effects into the nonrelativistic elastic nucleon-nucleus scattering in a consistent fashion. This work is directed towards completely and reliably calculating the first order term in a Watson expansion including a modification through the nuclear medium. The research effort in few-body physics was concentrated on finishing a study on the sensitivity of the np backward angle differential cross section to the size of the pion nucleon coupling constant and setting up a framework to investigate the low energy behavior of energy dependent meson-exchange potentials. Completed and ongoing research efforts in the two main areas mentioned above are discussed in the following two sections
Chernin, Artur D.
1994-08-01
In a paper published in 1953, i.e., more than a decade before the observational discovery of the cosmic microwave background radiation, George Gamow predicted theoretically the temperature of this radiation. He estimated it to be 7 K, which is very close to the subsequently measured value of about 3 K. Gamow found the present temperature of the background radiation on the basis of general formulas of cosmological dynamics. This prediction was in no way related to primordial nucleosynthesis.This circumstance has and is still causing misunderstanding in those cases in which the authors have raised doubts about Gamow's results, although an actual error has never been demonstrated. A detailed analysis makes it possible to understand how Gamow's calculation is possible. The problem lies in the fact that Gamow makes a certain additional implicit assumption which allows him to dispense with information on nucleosynthesis. This assumption is discussed in the context of the state of cosmology in the period from the fifties to the seventies, and of the current status of this branch of science.
Directory of Open Access Journals (Sweden)
Martínez-López Emilio J.
2017-01-01
Full Text Available The aim was to quantify the influence of body composition on the strength and cardiovascular endurance in adolescents. 858 Spanish adolescents participated in this pilot study. BMI values, standing jump test and Course Navette test were analyzed. The degree of influence of BMI was calculated by effect size. In the standing jump test, only between 18- 25% of boys and between 17-36% of overweight girls got a distance equal or greater than those with normalweight. In Course Navette, only between 9%-19% of the boys and 23%-35% of overweight girls got equal or greater scores than those with normalweight. It is concluded that only a small percentage of adolescent overweight reach outcomes in strength and cardiovascular endurance equal or greater than the normalweight students. These results suggest that it would be necessary to include the body composition variable within the scales of scholar physical fitness test in young people.
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Hanchar А.І.
2012-03-01
Full Text Available Research purpose: to expose theoretical and practical bases of effective methods of forming of skills of swimming at the different groups of population taking into account the gender differences of student in the process of physical education and sport. The dominant aspects of forming skills of swimming for different age-dependent groups are set. The negative phenomena of organizational character, which does not allow in good time and reliably to form for a man vitally important skills of safe movement on water, are selected. 5 basic aspects of forming of skills are recommended swimming which characterize high-quality realization of educational in detail, professionally-applied, health-improvement-hygienical, medical prophylactic and sporting-pedagogical influences of facilities of swimming on a population.
International Nuclear Information System (INIS)
Madsen, V.A.; Landau, R.H.
1986-01-01
Final technical report on a contract supporting theoretical studies in nuclear physics at Oregon State University is presented. The research was led by Professors Landau and Madsen and carried out in collaboration with graduate students in Corvallis and scientists at LLNL-Livermore, KFA-Julich, Purdue University-West Lafayette, University of Oregon-Eugene, Florida State University-Talahasie, and TRIUMF-Vancouver. The studies included meson exchange current effects, quark effects,and relativistic/Dirac effects deduced from spin observables in p- 3 He scattering, coupled bound and continuum eigenstates in momentum space for kaons and antiprotons, and charge symmetry violation in π scattering from trinucleons. Additional studies included microscopic optical potential calculations, multiple step processes, and differences in neutron and proton multipole matrix elements in low lying collective states and in giant resonances. 45 refs
DEFF Research Database (Denmark)
Singh, Bachu Narain
2003-01-01
Effects of neutron irradiation on defect accumulation and physical and mechanical properties have been studied both experimentally and theoretically. Specimens of pure iron and RAFM (reduced activation ferritic-martensic) steels were irradiated todifferent dose levels and at different irradiation...... temperatures. The resulting microstructure was characterized using transmission electron microscopy, positron annihilation spectroscopy and electrical resistivity measurements. Mechanical properties weredetermined by uniaxial tensile testing. Dislocation-loop interaction, formation of rafts of loops, radiation...... hardening and formation of “cleared channels” were studied using different computational techniques. Experiments have shown that nano-voids areformed both in pure iron and F82H steel already at 50°C. In pure iron, the formation of nano-voids is detected already at a dose level of ~10-3 dpa. Also in iron...
Jakubiak, Brittany K; Feeney, Brooke C
2017-08-01
Throughout the life span, individuals engage in affectionate touch with close others. Touch receipt promotes well-being in infancy, but the impacts of touch in adult close relationships have been largely unexplored. In this article, we propose that affectionate touch receipt promotes relational, psychological, and physical well-being in adulthood, and we present a theoretical mechanistic model to explain why affectionate touch may promote these outcomes. The model includes pathways through which touch could affect well-being by reducing stress and by promoting well-being independent of stress. Specifically, two immediate outcomes of affectionate touch receipt-relational-cognitive changes and neurobiological changes-are described as important mechanisms underlying the effects of affectionate touch on well-being. We also review and evaluate the existing research linking affectionate touch to well-being in adulthood and propose an agenda to advance research in this area. This theoretical perspective provides a foundation for future work on touch in adult close relationships.
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Katie A. Weatherson
2017-10-01
Full Text Available Abstract Background In British Columbia Canada, a Daily Physical Activity (DPA policy was mandated that requires elementary school teachers to provide students with opportunities to achieve 30 min of physical activity during the school day. However, the implementation of school-based physical activity policies is influenced by many factors. A theoretical examination of the factors that impede and enhance teachers’ implementation of physical activity policies is necessary in order to develop strategies to improve policy practice and achieve desired outcomes. This study used the Theoretical Domains Framework (TDF to understand teachers’ barriers and facilitators to the implementation of the DPA policy in one school district. Additionally, barriers and facilitators were examined and compared according to how the teacher implemented the DPA policy during the instructional school day. Methods Interviews were conducted with thirteen teachers and transcribed verbatim. One researcher performed barrier and facilitator extraction, with double extraction occurring across a third of the interview transcripts by a second researcher. A deductive and inductive analytical approach in a two-stage process was employed whereby barriers and facilitators were deductively coded using TDF domains (content analysis and analyzed for sub-themes within each domain. Two researchers performed coding. Results A total of 832 items were extracted from the interview transcripts. Some items were coded into multiple TDF domains, resulting in a total of 1422 observations. The most commonly coded TDF domains accounting for 75% of the total were Environmental context and resources (ECR; n = 250, Beliefs about consequences (n = 225, Social influences (n = 193, Knowledge (n = 100, and Intentions (n = 88. Teachers who implemented DPA during instructional time differed from those who relied on non-instructional time in relation to Goals, Behavioural regulation, Social
Weatherson, Katie A; McKay, Rhyann; Gainforth, Heather L; Jung, Mary E
2017-10-23
In British Columbia Canada, a Daily Physical Activity (DPA) policy was mandated that requires elementary school teachers to provide students with opportunities to achieve 30 min of physical activity during the school day. However, the implementation of school-based physical activity policies is influenced by many factors. A theoretical examination of the factors that impede and enhance teachers' implementation of physical activity policies is necessary in order to develop strategies to improve policy practice and achieve desired outcomes. This study used the Theoretical Domains Framework (TDF) to understand teachers' barriers and facilitators to the implementation of the DPA policy in one school district. Additionally, barriers and facilitators were examined and compared according to how the teacher implemented the DPA policy during the instructional school day. Interviews were conducted with thirteen teachers and transcribed verbatim. One researcher performed barrier and facilitator extraction, with double extraction occurring across a third of the interview transcripts by a second researcher. A deductive and inductive analytical approach in a two-stage process was employed whereby barriers and facilitators were deductively coded using TDF domains (content analysis) and analyzed for sub-themes within each domain. Two researchers performed coding. A total of 832 items were extracted from the interview transcripts. Some items were coded into multiple TDF domains, resulting in a total of 1422 observations. The most commonly coded TDF domains accounting for 75% of the total were Environmental context and resources (ECR; n = 250), Beliefs about consequences (n = 225), Social influences (n = 193), Knowledge (n = 100), and Intentions (n = 88). Teachers who implemented DPA during instructional time differed from those who relied on non-instructional time in relation to Goals, Behavioural regulation, Social/professional role and identity, Beliefs about
Tilson, Julie K; Mickan, Sharon
2014-06-25
There is a need for theoretically grounded and evidence-based interventions that enhance the use of research evidence in physical therapist practice. This paper and its companion paper introduce the Physical therapist-driven Education for Actionable Knowledge translation (PEAK) program, an educational program designed to promote physical therapists' integration of research evidence into clinical decision-making. The pedagogical foundations for the PEAK educational program include Albert Bandura's social cognitive theory and Malcolm Knowles's adult learning theory. Additionally, two complementary frameworks of knowledge translation, the Promoting Action on Research Implementation in Health Services (PARiHS) and Knowledge to Action (KTA) Cycle, were used to inform the organizational elements of the program. Finally, the program design was influenced by evidence from previous attempts to facilitate the use of research in practice at the individual and organizational levels. The 6-month PEAK program consisted of four consecutive and interdependent components. First, leadership support was secured and electronic resources were acquired and distributed to participants. Next, a two-day training workshop consisting of didactic and small group activities was conducted that addressed the five steps of evidence based practice. For five months following the workshop, participants worked in small groups to review and synthesize literature around a group-selected area of common clinical interest. Each group contributed to the generation of a "Best Practices List" - a list of locally generated, evidence-based, actionable behaviors relevant to the groups' clinical practice. Ultimately, participants agreed to implement the Best Practices List in their clinical practice. This, first of two companion papers, describes the underlying pedagogical theories, knowledge translation frameworks, and research evidence used to derive the PEAK program - an educational program designed to
Sebire, Simon J; Edwards, Mark J; Fox, Kenneth R; Davies, Ben; Banfield, Kathryn; Wood, Lesley; Jago, Russell
2016-08-01
The implementation, fidelity, and receipt of a self-determination-theory-based after-school physical activity intervention (Action 3:30) delivered by teaching assistants (TAs) was examined using a mixed-methods process evaluation. Physical activity motivation and need satisfaction were reported by 539 participants at baseline, the end of intervention, and 4-month follow-up. Pupil- and TA-reported autonomy-support and teaching efficacy were collected alongside interviews with 18 TAs and focus groups with 60 participants. Among intervention boys there were small increases in identified, introjected, and external motivation and no differences in need satisfaction. Among girls, intrinsic and identified motivation and autonomy and relatedness were lower in the intervention group. Qualitative evidence for fidelity was moderate, and boys reported greater need satisfaction than girls. TAs provided greater structure than involvement or autonomy-support and felt least efficacious when facing school-based challenges. The findings highlight the refinements needed to enhance theoretical fidelity and intervention effectiveness for boys and girls.
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Maaike Koffeman
2017-06-01
Full Text Available Le poète Paul Éluard et le compositeur Francis Poulenc ont tous deux porté un grand intérêt à la peinture moderne, et surtout à l’œuvre de Pablo Picasso. Cet article étudie la façon dont les liens d’amitié et d’admiration réciproque entre ces trois artistes se manifestent dans des œuvres intermédiales, notamment le recueil Voir. Poèmes Peintures Dessins (1948 et le cycle de mélodies Le Travail du peintre (1957. L’interaction créatrice entre peinture, poésie et musique est analysée à la lumière des théories surréalistes formulées par Éluard dans Donner à voir (1939.
Grupos intermédios em Portugal (1600-1850: uma aproximação ao vocabulário social
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Andreia Durães
Full Text Available O presente estudo pretende contribuir para lançar a discussão em torno daquilo que, no período moderno, se entendia por camadas intermédias. Para conhecer as visões sociais no período de referência (1600-1850 foram usadas fontes heterogêneas. O objetivo central é sublinhar, por um lado, a multiplicidade dos esquemas de representação social e a coexistência de taxinomias e, por outro, provar que, apesar de estranhas ao discurso legal e ao enquadramento normativo, a noção de mediania e as visões da sociedade que a incluem estão difundidas em Portugal no período em análise.
Activisme socio-politique et intermédialité dans le documentaire Súper amigos d’Arturo Pérez Torres
Catoir, Marie-Julie
2014-01-01
Cet article étudie les dimensions politiques du documentaire Súper Amigos, tant au niveau de la diégèse que de la démarche de création du réalisateur. D’une part, le documentaire représente le quotidien de cinq luchadores sociales qui agissent au cœur de la ville de Mexico comme des activistes sociaux et politiques. D’autre part, la démarche de création du réalisateur, basée sur une esthétique intermédiale (mêlant cinéma d’animation, BD, comics et cinéma documentaire), peut être perçue par le...
Research in theoretical nuclear physics
International Nuclear Information System (INIS)
Liu, Keh-Fei; Draper, T.; Li, Bing An.
1990-01-01
This report discusses research in the following areas: form factors; mesoniums and glueballs; soliton model of hadrons; color transparency; soliton-soliton interaction; proton spin; and strange quark content of the proton
Theoretical implications on ISABELLE physics
Energy Technology Data Exchange (ETDEWEB)
Wang, L L.C.
1980-01-01
A brief historical review of the development of understanding of the weak interaction and its final unification with electromagnetic theory is given first. Then the production cross sections of W/sup + -/ and Z/sup 0/ in hadronic scatterings are estimated; CVC, scaling, Drell-Yan model, structure functions and perturbative QCD, sigma/sub w/, sigma/sub z/, and production rate are aspects considered. Next, the detection of the Z/sup 0/ and W/sup + -/ in leptonic decay and hadronic decay is discussed, along with some detail features of the Drell-Yan model. Then an estimate of the onia production is given, and the Higgs boson and the technicolor pseudoscalar production are considered. In conclusion, anticipated work in these areas at ISABELLE is summarized. 48 references, 14 figures, 2 tables. (RWR)
Foundations of modern theoretical physics
International Nuclear Information System (INIS)
Rayski, J.
1983-01-01
A critical survey of classical and quantum mechanics, special relativity, quantum field theory as well as the theory of elementary particles and the foundations of general relativity is given. An attempt of a unified field theory formulation is done. (A.S.)
Theoretical atomic physics for fusion
International Nuclear Information System (INIS)
Pindzola, M.S.
1993-01-01
The understanding of electron-ion collision processes in plasmas remains a key factor in the ultimate development of nuclear fusion as a viable energy source for the nation. Our 1993--1995 research proposal delineated several areas of research in electron-ion scattering theory. In this paper we summarize our efforts in 1993
Theoretical Particle Physics Research Program
Energy Technology Data Exchange (ETDEWEB)
Paz, Gil [Wayne State Univ., Detroit, MI (United States)
2015-06-23
This is the final technical report for DOE grant DE-FG02-13ER41997. It contains a brief description of accomplishments: research project that were completed during the period of the grant, research project that were started during the period of the grant, and service to the scientific community. It also lists the publications in the funded period, travel related to the grant, and information about the personal supported by the grant.
Theoretical problems in accelerator physics
International Nuclear Information System (INIS)
1992-01-01
This report discusses the following research on accelerators: computational methods; higher order mode suppression in accelerators structures; overmoded waveguide components and application to SLED II and power transport; rf sources; accelerator cavity design for a B factory asymmetric collider; and photonic band gap cavities
Theoretical studies in nuclear physics
International Nuclear Information System (INIS)
Landau, R.H.; Madsen, V.A.
1991-01-01
This report discusses research in nuclear theory in the following areas: Isospin effects and charge exchange; inelastic and charge exchange scattering; momentum space proton scattering; pion scattering from nuclei; and antiproton studies. 14 refs
The goal of theoretical physics
International Nuclear Information System (INIS)
Hawking, S.
1981-01-01
After a short historical review the author describes the motivations for constructing unified field theories. Furthermore he describes the current efforts to unify the electroweak picture with that of quark dynamics. Finally he considers the problem of unifying the gravitational interactions with the other interactions. (HSI).
Group theoretical methods in physics
International Nuclear Information System (INIS)
Zachary, W.W.
1984-01-01
This book presents the papers given at a colloquium on group theory. Topics considered at the colloquium included supersymmetric Yang-Mills fields and relations with other nonlinear systems, quantum chaos, a Lie-transformed action principle for classical plasma dynamics, an obstacle to predictability, perturbation theory, simple Lie groups, coherent states, scattering and band structure problems, scattering amplitudes, bosons, charge density wave superconductors, harmonic analysis of boson algebras, the gauge principle, the equivalence principle, supergravity, quantum field theory, quantum gravity, and the Cauchy problem
[Research in theoretical particle physics
International Nuclear Information System (INIS)
1990-01-01
This paper discusses the following topics: effective actions and the S-matrix for a bound states; neutrino astrophysics; color transparency and nuclear target effects in hadron scattering; neutrino dark matter and galactic dynamics; Berry's phase and symplectic structure; and Bosonization and the meaning of equivalence
Research in theoretical nuclear physics
International Nuclear Information System (INIS)
Liu, Keh-Fei.
1989-01-01
This paper discusses: the role of nuclear binding in EMC effect; skyrmion quantization and phenomenology; lattice gauge Monte Carlo calculations; identification of tensor glueball; evidence of mesoniums in bar pm annihilation and γγ reactions; Skyrme-Landau parameterization of effective NN interactions; and quark-gluon plamsa
McParlin, Catherine; Bell, Ruth; Robson, Stephen C; Muirhead, Colin R; Araújo-Soares, Vera
2017-06-01
to investigate barriers and facilitators to physical activity (PA) guideline implementation for midwives when advising obese pregnant women. a cross-sectional, self-completion, anonymous questionnaire was designed using the Theoretical Domains Framework. this framework was developed to evaluate the implementation of guidelines by health care professionals. A total of 40 questions were included. These were informed by previous research on pregnant women's and midwives views, knowledge and attitudes to PA, and supported by national evidence based guidelines. Demographic information and free text comments were also collected. three diverse NHS Trusts in the North East of England. all midwives employed by two hospital Trusts and the community midwives from the third Trust (n=375) were invited to participate. mean domain scores were calculated. Factor and regression analysis were performed to describe which theoretical domains may be influencing practice. Free text comments were analysed thematically. 192 (53%) questionnaires were returned. Mean domain scores were highest for social professional role and knowledge, and lowest for skills, beliefs about capabilities and behaviour regulation. Regression analysis indicated that skills and memory/attention/decision domains had a statistically significant influence on midwives discussing PA with obese pregnant women and advising them accordingly. Midwives comments indicated that they felt it was part of their role to discuss PA with all pregnant women but felt they lacked the skills and resources to do so effectively. midwives seem to have the necessary knowledge about the need/importance of PA advice for obese women and believe it is part of their role, but perceive they lack necessary skills and resources, and do not plan or prioritise the discussion regarding PA with obese pregnant woman. designing interventions that improve skills, promote routine enquiry regarding PA and provide resources (eg. information, referral
Directory of Open Access Journals (Sweden)
Caroline Lejars
2014-11-01
Full Text Available Les agriculteurs dépendent souvent, pour la commercialisation de leur produit, d'un réseau complexe d'intermédiaires privés. Dans les pays en développement, ces intermédiaires de la vente sont souvent accusés de réaliser des profits excessifs et d’être responsables des énormes écarts entre le prix de vente au champ et le prix payé par le consommateur. En s’appuyant sur l’étude de la filière oignon d’été dans le Saïs au Maroc, cet article analyse le rôle de ces réseaux d'intermédiaires, et la répartition des coûts et de la marge bénéficiaire le long de la chaine de production et de commercialisation. On montre ainsi que cette filière crée un grand nombre d'emplois en aval de la production, que ce soit pour la collecte, le stockage, le transport ou la vente. La part de la marge bénéficiaire revenant à l’ensemble des intermédiaires est supérieure à celle revenant aux producteurs, ce qui entraine effectivement une importante différence de prix entre le prix de vente et le prix du marché. Même si les profits et les rôles des intermédiaires sont très variables, certains des acteurs intermédiaires, notamment les détaillants et les revendeurs en gros, récupèrent des marges bien supérieures à celles des agriculteurs. L’organisation des producteurs autour de zones de stockage et d’activités de commercialisation permettrait de limiter le nombre d’intermédiaires, d’accroitre le profit des agriculteurs et de modifier les rapports de négociations souvent asymétriques entre agriculteurs et commerçants.
Sebire, Simon J; Kesten, Joanna M; Edwards, Mark J; May, Thomas; Banfield, Kathryn; Tomkinson, Keeley; Blair, Peter S; Bird, Emma L; Powell, Jane E; Jago, Russell
2016-05-01
To report the theory-based process evaluation of the Bristol Girls' Dance Project, a cluster-randomised controlled trial to increase adolescent girls' physical activity. A mixed-method process evaluation of the intervention's self-determination theory components comprising lesson observations, post-intervention interviews and focus groups. Four intervention dance lessons per dance instructor were observed, audio recorded and rated to estimate the use of need-supportive teaching strategies. Intervention participants (n = 281) reported their dance instructors' provision of autonomy-support. Semi-structured interviews with the dance instructors (n = 10) explored fidelity to the theory and focus groups were conducted with participants (n = 59) in each school to explore their receipt of the intervention and views on the dance instructors' motivating style. Although instructors accepted the theory-based approach, intervention fidelity was variable. Relatedness support was the most commonly observed need-supportive teaching behaviour, provision of structure was moderate and autonomy-support was comparatively low. The qualitative findings identified how instructors supported competence and developed trusting relationships with participants. Fidelity was challenged where autonomy provision was limited to option choices rather than input into the pace or direction of lessons and where controlling teaching styles were adopted, often to manage disruptive behaviour. The successes and challenges to achieving theoretical fidelity in the Bristol Girls' Dance Project may help explain the intervention effects and can more broadly inform the design of theory-based complex interventions aimed at increasing young people's physical activity in after-school settings.
Sebire, Simon J.; Kesten, Joanna M.; Edwards, Mark J.; May, Thomas; Banfield, Kathryn; Tomkinson, Keeley; Blair, Peter S.; Bird, Emma L.; Powell, Jane E.; Jago, Russell
2016-01-01
Objectives To report the theory-based process evaluation of the Bristol Girls' Dance Project, a cluster-randomised controlled trial to increase adolescent girls' physical activity. Design A mixed-method process evaluation of the intervention's self-determination theory components comprising lesson observations, post-intervention interviews and focus groups. Method Four intervention dance lessons per dance instructor were observed, audio recorded and rated to estimate the use of need-supportive teaching strategies. Intervention participants (n = 281) reported their dance instructors' provision of autonomy-support. Semi-structured interviews with the dance instructors (n = 10) explored fidelity to the theory and focus groups were conducted with participants (n = 59) in each school to explore their receipt of the intervention and views on the dance instructors' motivating style. Results Although instructors accepted the theory-based approach, intervention fidelity was variable. Relatedness support was the most commonly observed need-supportive teaching behaviour, provision of structure was moderate and autonomy-support was comparatively low. The qualitative findings identified how instructors supported competence and developed trusting relationships with participants. Fidelity was challenged where autonomy provision was limited to option choices rather than input into the pace or direction of lessons and where controlling teaching styles were adopted, often to manage disruptive behaviour. Conclusion The successes and challenges to achieving theoretical fidelity in the Bristol Girls' Dance Project may help explain the intervention effects and can more broadly inform the design of theory-based complex interventions aimed at increasing young people's physical activity in after-school settings. PMID:27175102
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Maliszewska Weronika
2016-03-01
Full Text Available The area of interests of nuclear physics are studies of reactions, wherein atomic nuclei of projectile collide with target nuclei. An amount of energy lost by projectile nucleus during its passing through the target is a major issue – it is important to know how charged particles interact with matter. It is possible to afford this knowledge by using theoretical programs that calculate energy loss applying the Bethe-Bloch equation. Hadrontherapy, which is a field of still growing interest, is based on the interactions of charged particles with matter. Therefore, there exists a need of creating a simple model that could be used to the calculation of dose distributions in biological matter. Two programs (SRIM, Xeloss, used to the calculation of energy loss by nuclear physicist, have been adapted to determine the dose distributions in analogues of human tissues. Results of the calculations with those programs for beams used in hadrontherapy (e.g. 1H, 12C will be compared with experimental data available in references.
International Nuclear Information System (INIS)
Singh, B.N.
2003-08-01
Effects of neutron irradiation on defect accumulation and physical and mechanical properties have been studied both experimentally and theoretically. Specimens of pure iron and RAFM (reduced activation ferritic-martensic) steels were irradiated to different dose levels and at different irradiation temperatures. The resulting microstructure was characterized using transmission electron microscopy, positron annihilation spectroscopy and electrical resistivity measurements. Mechanical properties were determined by uniaxial tensile testing. Dislocation-loop interaction, formation of rafts of loops, radiation hardening and formation of 'cleared channels' were studied using different computational techniques. Experiments have shown that nano-voids are formed both in pure iron and F82H steel already at 50 deg. C. In pure iron, the formation of nano-voids is detected already at a dose level of ∼10 -3 dpa. Also in iron, self-interstitial atoms were found to accumulate in the form of glissile and sessile loops; at higher dose levels, these loops led to formation of rafts of loops. Irradiation led to an increase in the yield strength, a sudden drop in the yield stress, and, at higher doses, the initiation of plastic instability immediately beyond the upper yield point. Experimental as well as the results of computer simulations are found to be consistent with the cascade induced source hardening model
Energy Technology Data Exchange (ETDEWEB)
Singh, B.N
2003-08-01
Effects of neutron irradiation on defect accumulation and physical and mechanical properties have been studied both experimentally and theoretically. Specimens of pure iron and RAFM (reduced activation ferritic-martensic) steels were irradiated to different dose levels and at different irradiation temperatures. The resulting microstructure was characterized using transmission electron microscopy, positron annihilation spectroscopy and electrical resistivity measurements. Mechanical properties were determined by uniaxial tensile testing. Dislocation-loop interaction, formation of rafts of loops, radiation hardening and formation of 'cleared channels' were studied using different computational techniques. Experiments have shown that nano-voids are formed both in pure iron and F82H steel already at 50 deg. C. In pure iron, the formation of nano-voids is detected already at a dose level of {approx}10{sup -3} dpa. Also in iron, self-interstitial atoms were found to accumulate in the form of glissile and sessile loops; at higher dose levels, these loops led to formation of rafts of loops. Irradiation led to an increase in the yield strength, a sudden drop in the yield stress, and, at higher doses, the initiation of plastic instability immediately beyond the upper yield point. Experimental as well as the results of computer simulations are found to be consistent with the cascade induced source hardening model.
Liu, Weiyu; Ren, Yukun; Tao, Ye; Li, Yanbo; Wu, Qisheng
2018-05-01
cross shape is theoretically erected, with four sets of gating traveling-fields in perpendicular orientations, from which the resulting liquid mixture is obtainable at any one of the three outlet ports. Supported by mathematical analysis, our physical demonstration of the TW-FFET shows it has great potential to advance fully automated electroconvective sample treatment in modern micro total analytical systems.
International Nuclear Information System (INIS)
1967-01-01
This fourth 'IAEA Laboratory Activities' report describes development and work during the year 1966. It includes activities of the IAEA Laboratories at Vienna and Seibersdorf, the International Laboratory of Marine Radioactivity at Monaco, the International Centre for Theoretical Physics at Trieste, and the Middle Eastern Regional Radioisotope Centre for the Arab Countries at Cairo. (author)
International Nuclear Information System (INIS)
1966-01-01
This third 'IAEA Laboratory Activities' report describes development and work during the year 1965. It includes activities of the IAEA Laboratories at Vienna and Seibersdorf, the International Laboratory of Marine Radioactivity at Monaco, the International Centre for Theoretical Physics at Trieste, and the Middle Eastern Regional Radioisotope Centre for the Arab Countries at Cairo
International Nuclear Information System (INIS)
1983-02-01
By an exchange of letters between the Directors General of the United Nations Educational, Scientific and Cultural Organization (UNESCO) and the Agency, the duration of the agreement between the two organizations concerning the joint operation of the International Centre for Theoretical Physics at Trieste has been extended until 31 December 1986.
Predição da composição corporal por intermédio de método indireto
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Ferreira Marcelo de Andrade
2001-01-01
Full Text Available O objetivo deste trabalho foi desenvolver equações de predição da composição química corporal de bovinos mestiços F1 Simental x Nelore, por intermédio da análise química da amostra representativa da carcaça. Utilizaram-se 29 animais, não- castrados, com idade média de 17 meses e peso vivo inicial de 354 kg. Cinco animais foram abatidos ao início do experimento e os demais, distribuídos, inteiramente ao acaso, nos tratamentos que foram definidos de acordo com o nível de concentrado na ração (25; 37,5; 50; 62,5; e 75%. Os conteúdos corporais de proteína, gordura, energia e minerais foram determinados analisando-se amostras de seção da carcaça incluindo a 9ª, 10ª e 11ª costelas, de acordo com HANKINS E HOWE (1946 (seção HH, e dos demais tecidos corporais. Os teores de proteína, gordura, energia e minerais, com exceção do magnésio, da seção HH, mostraram-se altamente correlacionados com a composição química do corpo vazio.
Verry , Damien; Nicolas , Jean-Pierre
2005-01-01
Rapport pour le compte de la DRAST (Ministère de l'Équipement) et de l'ADEME dans le cadre du groupe 11 du PREDIT. 96 p.Voir aussi :- le Rapport intermédiaire n°1"Modèles d'interaction entre transport et urbanisme : état de l'art et choix du modèle pour le projet SIMBAD". http://halshs.ccsd.cnrs.fr/halshs-00101342- le Rapport intermédiaire n°4"L'architecture du modèle au sein du projet SIMBAD."http://halshs.ccsd.cnrs.fr/halshs-00101399; Rapport de recherche; Le projet SIMBAD (SImuler les MoBi...
International Nuclear Information System (INIS)
Anon.
1975-01-01
Work in theoretical chemistry was organized under the following topics: scattering theory and dynamics (elastic scattering of the rare gas hydrides, inelastic scattering in Li + H 2 , statistical theory for bimolecular collisions, model study of dissociative scattering, comparative study of elastic scattering computational methods), studies of atmospheric diatomic and triatomic species, structure and spectra of diatomic molecules, the evaluation of van der Waals forces, potential energy surfaces and structure and dynamics, calculation of molecular polarizabilities, and development of theoretical techniques and computing systems. Spectroscopic parameters are tabulated for NO 2 , N 2 O, H 2 O + , VH, and NH. Self-consistent-field wave functions were computed for He 2 in two-center and three-center bases. Rare gas hydride intermolecular potentials are shown. (9 figures, 14 tables) (U.S.)
Loodts, Vanessa; Rongy, Laurence; De Wit, Anne
2014-05-01
Subsurface carbon sequestration has emerged as a promising solution to the problem of increasing atmospheric carbon dioxide (CO2) levels. How does the efficiency of such a sequestration process depend on the physical and chemical characteristics of the storage site? This question is emblematic of the need to better understand the dynamics of CO2 in subsurface formations, and in particular, the properties of the convective dissolution of CO2 in the salt water of aquifers. This dissolution is known to improve the safety of the sequestration by reducing the risks of leaks of CO2 to the atmosphere. Buoyancy-driven convection makes this dissolution faster by transporting dissolved CO2 further away from the interface. Indeed, upon injection, the less dense CO2 phase rises above the aqueous layer where it starts to dissolve. The dissolved CO2 increases the density of the aqueous solution, thereby creating a layer of denser CO2-rich solution above less dense solution. This unstable density gradient in the gravity field is at the origin of convection. In this framework, we theoretically investigate the effect of CO2 pressure, salt concentration, temperature, and chemical reactions on the dissolution-driven convection of CO2 in aqueous solutions. On the basis of a linear stability analysis, we assess the stability of the time-dependent density profiles developing when CO2 dissolves in an aqueous layer below it. We predict that increasing CO2 pressure destabilizes the system with regard to buoyancy-driven convection, because it increases the density gradient at the origin of the instability. By contrast, increasing salt concentration or temperature stabilizes the system via effects on CO2 solubility, solutal expansion coefficient, diffusion coefficient and on the viscosity and density of the solution. We also show that a reaction of CO2 with chemical species dissolved in the aqueous solution can either enhance or decrease the amplitude of the convective dissolution compared
P. Sphicas
There have been three physics meetings since the last CMS week: “physics days” on March 27-29, the Physics/ Trigger week on April 23-27 and the most recent physics days on May 22-24. The main purpose of the March physics days was to finalize the list of “2007 analyses”, i.e. the few topics that the physics groups will concentrate on for the rest of this calendar year. The idea is to carry out a full physics exercise, with CMSSW, for select physics channels which test key features of the physics objects, or represent potential “day 1” physics topics that need to be addressed in advance. The list of these analyses was indeed completed and presented in the plenary meetings. As always, a significant amount of time was also spent in reviewing the status of the physics objects (reconstruction) as well as their usage in the High-Level Trigger (HLT). The major event of the past three months was the first “Physics/Trigger week” in Apri...
Towards A Theoretical Biology: Reminiscences
Indian Academy of Sciences (India)
In 1967 I had decided to broaden my activities beyond the theoretical physics I had been engaged in since the start of my career at the University of Chicago. Theoretical biology was among the possibilities I was considering, though I then had no deep understanding of what it was and what it might become. Jack Cowan, a ...
International Nuclear Information System (INIS)
1986-01-01
Progress is reported in these areas: neutrino physics; nucleon decay and the intrinsic properties of neutrinos; the D-zero experiment; QCD jet physics and ultrarelativistic nuclear physics; the Colliding Detector at Fermilab; rare kaon decay; the Anomalous Single Photon detector at SLAC; particle theory; neutrino astrophysics and cosmology; and operations and support services
National Research Council Canada - National Science Library
Binoth, T
2012-01-01
... collisions.Covering the topics in a pedagogical manner, the book introduces the theoretical and phenomenological framework of hadron collisions and presents the current theoretical models of frontier physics...
International Nuclear Information System (INIS)
1996-02-01
The text of the Agreement between the International Atomic Energy Agency, the United Nations Educational, Scientific and Cultural Organization and the Government of the Republic of Italy concerning the International Centre for Theoretical Physics at Trieste is reproduced in this document for the information of all Members. The Agreement was approved by the Agency's Board of Governors on 25 February 1993, by the UNESCO General Conference on 16 November 1993, and ratified by the Italian Parliament on 2 January 1995
International Nuclear Information System (INIS)
1996-02-01
The text of the Agreement between the International Atomic Energy Agency and the United Nations Educational, Scientific and Cultural Organization concerning the Joint Operation of the International Centre for Theoretical Physics at Trieste is reproduced in this document for the information of all Members. The Agreement was approved by the Agency's Board of Governors on 25 February 1993 and by the UNESCO General Conference on 16 November 1993
D. Acosta
2010-01-01
A remarkable amount of progress has been made in Physics since the last CMS Week in June given the exponential growth in the delivered LHC luminosity. The first major milestone was the delivery of a variety of results to the ICHEP international conference held in Paris this July. For this conference, CMS prepared 15 Physics Analysis Summaries on physics objects and 22 Summaries on new and interesting physics measurements that exploited the luminosity recorded by the CMS detector. The challenge was incorporating the largest batch of luminosity that was delivered only days before the conference (300 nb-1 total). The physics covered from this initial running period spanned hadron production measurements, jet production and properties, electroweak vector boson production, and even glimpses of the top quark. Since then, the accumulated integrated luminosity has increased by a factor of more than 100, and all groups have been working tremendously hard on analysing this dataset. The September Physics Week was held ...
P. Sphicas
The CPT project came to an end in December 2006 and its original scope is now shared among three new areas, namely Computing, Offline and Physics. In the physics area the basic change with respect to the previous system (where the PRS groups were charged with detector and physics object reconstruction and physics analysis) was the split of the detector PRS groups (the old ECAL-egamma, HCAL-jetMET, Tracker-btau and Muons) into two groups each: a Detector Performance Group (DPG) and a Physics Object Group. The DPGs are now led by the Commissioning and Run Coordinator deputy (Darin Acosta) and will appear in the correspond¬ing column in CMS bulletins. On the physics side, the physics object groups are charged with the reconstruction of physics objects, the tuning of the simulation (in collaboration with the DPGs) to reproduce the data, the provision of code for the High-Level Trigger, the optimization of the algorithms involved for the different physics analyses (in collaboration with the analysis gr...
J. Incandela
There have been numerous developments in the physics area since the September CMS week. The biggest single event was the Physics/Trigger week in the end of Octo¬ber, whereas in terms of ongoing activities the “2007 analyses” went into high gear. This was in parallel with participation in CSA07 by the physics groups. On the or¬ganizational side, the new conveners of the physics groups have been selected, and a new database for man¬aging physics analyses has been deployed. Physics/Trigger week The second Physics-Trigger week of 2007 took place during the week of October 22-26. The first half of the week was dedicated to working group meetings. The ple¬nary Joint Physics-Trigger meeting took place on Wednesday afternoon and focused on the activities of the new Trigger Studies Group (TSG) and trigger monitoring. Both the Physics and Trigger organizations are now focused on readiness for early data-taking. Thus, early trigger tables and preparations for calibr...
Dark matter: Theoretical perspectives
International Nuclear Information System (INIS)
Turner, M.S.
1993-01-01
The author both reviews and makes the case for the current theoretical prejudice: a flat Universe whose dominant constituent is nonbaryonic dark matter, emphasizing that this is still a prejudice and not yet fact. The theoretical motivation for nonbaryonic dark matter is discussed in the context of current elementary-particle theory, stressing that (i) there are no dark-matter candidates within the open-quotes standard modelclose quotes of particle physics, (ii) there are several compelling candidates within attractive extensions of the standard model of particle physics, and (iii) the motivation for these compelling candidates comes first and foremost from particle physics. The dark-matter problem is now a pressing issue in both cosmology and particle physics, and the detection of particle dark matter would provide evidence for open-quotes new physics.close quotes The compelling candidates are a very light axion (10 -6 --10 -4 eV), a light neutrino (20--90 eV), and a heavy neutralino (10 GeV--2 TeV). The production of these particles in the early Universe and the prospects for their detection are also discussed. The author briefly mentions more exotic possibilities for the dark matter, including a nonzero cosmological constant, superheavy magnetic monopoles, and decaying neutrinos. 119 refs
Dark matter: Theoretical perspectives
Energy Technology Data Exchange (ETDEWEB)
Turner, M.S. (Chicago Univ., IL (United States). Enrico Fermi Inst. Fermi National Accelerator Lab., Batavia, IL (United States))
1993-01-01
I both review and make the case for the current theoretical prejudice: a flat Universe whose dominant constituent is nonbaryonic dark matter, emphasizing that this is still a prejudice and not yet fact. The theoretical motivation for nonbaryonic dark matter is discussed in the context of current elementary-particle theory, stressing that: (1) there are no dark matter candidates within the standard model of particle physics; (2) there are several compelling candidates within attractive extensions of the standard model of particle physics; and (3) the motivation for these compelling candidates comes first and foremost from particle physics. The dark-matter problem is now a pressing issue in both cosmology and particle physics, and the detection of particle dark matter would provide evidence for new physics.'' The compelling candidates are: a very light axion ( 10[sup [minus]6] eV--10[sup [minus]4] eV); a light neutrino (20 eV--90 eV); and a heavy neutralino (10 GeV--2 TeV). The production of these particles in the early Universe and the prospects for their detection are also discussed. I briefly mention more exotic possibilities for the dark matter, including a nonzero cosmological constant, superheavy magnetic monopoles, and decaying neutrinos.
Dark matter: Theoretical perspectives
Energy Technology Data Exchange (ETDEWEB)
Turner, M.S. [Chicago Univ., IL (United States). Enrico Fermi Inst.]|[Fermi National Accelerator Lab., Batavia, IL (United States)
1993-01-01
I both review and make the case for the current theoretical prejudice: a flat Universe whose dominant constituent is nonbaryonic dark matter, emphasizing that this is still a prejudice and not yet fact. The theoretical motivation for nonbaryonic dark matter is discussed in the context of current elementary-particle theory, stressing that: (1) there are no dark matter candidates within the standard model of particle physics; (2) there are several compelling candidates within attractive extensions of the standard model of particle physics; and (3) the motivation for these compelling candidates comes first and foremost from particle physics. The dark-matter problem is now a pressing issue in both cosmology and particle physics, and the detection of particle dark matter would provide evidence for ``new physics.`` The compelling candidates are: a very light axion ( 10{sup {minus}6} eV--10{sup {minus}4} eV); a light neutrino (20 eV--90 eV); and a heavy neutralino (10 GeV--2 TeV). The production of these particles in the early Universe and the prospects for their detection are also discussed. I briefly mention more exotic possibilities for the dark matter, including a nonzero cosmological constant, superheavy magnetic monopoles, and decaying neutrinos.
Submitted by
Physics Week: plenary meeting on physics groups plans for startup (14–15 May 2008) The Physics Objects (POG) and Physics Analysis (PAG) Groups presented their latest developments at the plenary meeting during the Physics Week. In the presentations particular attention was given to startup plans and readiness for data-taking. Many results based on the recent cosmic run were shown. A special Workshop on SUSY, described in a separate section, took place the day before the plenary. At the meeting, we had also two special DPG presentations on “Tracker and Muon alignment with CRAFT” (Ernesto Migliore) and “Calorimeter studies with CRAFT” (Chiara Rovelli). We had also a report from Offline (Andrea Rizzi) and Computing (Markus Klute) on the San Diego Workshop, described elsewhere in this bulletin. Tracking group (Boris Mangano). The level of sophistication of the tracking software increased significantly over the last few months: V0 (K0 and Λ) reconstr...
Directory of Open Access Journals (Sweden)
Kirpenko V.N.
2012-04-01
Full Text Available The special physical preparation as component of educational-battle to activity of students in the period of flying preparation and its influence on a capacity and safety of flights is shown. A role and value of raid of clock, special physical preparation of students of flying composition in accordance with the specific of military-professional and educational activity is considered. Facilities of the special physical preparation are presented: gymnastics, swimming, ski preparation, track-and-field, special trainings shells. The elements of the system of preparation of students of flying specialities are certain. Components, elements and factors of the special physical preparation in the period of flying preparation of students of different courses, step-up their physical and psychological preparedness are considered. Attention on providing of terms of safety of flights is accented.
DEFF Research Database (Denmark)
Bruus, Henrik
introducing microfluidics, the governing equations for mass, momentum and energy, and some basic flow solutions, the following 14 chapters treat hydraulic resistance/compliance, diffusion/dispersion, time-dependent flow, capillarity, electro- and magneto-hydrodynamics, thermal transport, two-phase flow......, complex flow patterns and acousto-fluidics, as well as the new fields of opto- and nano-fluidics. Throughout the book simple models with analytical solutions are presented to provide the student with a thorough physical understanding of order of magnitudes and various selected microfluidic phenomena...
Directory of Open Access Journals (Sweden)
Borkowski Andrzej
2015-12-01
Full Text Available The paper presents a summary of research activities concerning theoretical geodesy performed in Poland in the period of 2011-2014. It contains the results of research on new methods of the parameter estimation, a study on robustness properties of the M-estimation, control network and deformation analysis, and geodetic time series analysis. The main achievements in the geodetic parameter estimation involve a new model of the M-estimation with probabilistic models of geodetic observations, a new Shift-Msplit estimation, which allows to estimate a vector of parameter differences and the Shift-Msplit(+ that is a generalisation of Shift-Msplit estimation if the design matrix A of a functional model has not a full column rank. The new algorithms of the coordinates conversion between the Cartesian and geodetic coordinates, both on the rotational and triaxial ellipsoid can be mentioned as a highlights of the research of the last four years. New parameter estimation models developed have been adopted and successfully applied to the control network and deformation analysis.
D. Futyan
A lot has transpired on the “Physics” front since the last CMS Bulletin. The summer was filled with preparations of new Monte Carlo samples based on CMSSW_3, the finalization of all the 10 TeV physics analyses [in total 50 analyses were approved] and the preparations for the Physics Week in Bologna. A couple weeks later, the “October Exercise” commenced and ran through an intense two-week period. The Physics Days in October were packed with a number of topics that are relevant to data taking, in a number of “mini-workshops”: the luminosity measurement, the determination of the beam spot and the measurement of the missing transverse energy (MET) were the three main topics. Physics Week in Bologna The second physics week in 2009 took place in Bologna, Italy, on the week of Sep 7-11. The aim of the week was to review and establish how ready we are to do physics with the early collisions at the LHC. The agenda of the week was thus pac...
D. Futyan
A lot has transpired on the “Physics” front since the last CMS Bulletin. The summer was filled with preparations of new Monte Carlo samples based on CMSSW_3, the finalization of all the 10 TeV physics analyses [in total 50 analyses were approved] and the preparations for the Physics Week in Bologna. A couple weeks later, the “October Exercise” commenced and ran through an intense two-week period. The Physics Days in October were packed with a number of topics that are relevant to data taking, in a number of “mini-workshops”: the luminosity measurement, the determination of the beam spot and the measurement of the missing transverse energy (MET) were the three main topics. Physics Week in Bologna The second physics week in 2009 took place in Bologna, Italy, on the week of Sep 7-11. The aim of the week was to review and establish (we hoped) the readiness of CMS to do physics with the early collisions at the LHC. The agenda of the...
Theoretical developments in SUSY
Energy Technology Data Exchange (ETDEWEB)
Shifman, M. [University of Minnesota, William I. Fine Theoretical Physics Institute, Minneapolis, MN (United States)
2009-01-15
I am proud that I was personally acquainted with Julius Wess. We first met in 1999 when I was working on the Yuri Golfand Memorial Volume (The Many Faces of the Superworld, World Scientific, Singapore, 2000). I invited him to contribute, and he accepted this invitation with enthusiasm. After that, we met many times, mostly at various conferences in Germany and elsewhere. I was lucky to discuss with Julius questions of theoretical physics, and hear his recollections on how supersymmetry was born. In physics Julius was a visionary, who paved the way to generations of followers. In everyday life he was a kind and modest person, always ready to extend a helping hand to people who were in need of his help. I remember him telling me how concerned he was about the fate of theoretical physicists in Eastern Europe after the demise of communism. His ties with Israeli physicists bore a special character. I am honored by the opportunity to contribute an article to the Julius Wess Memorial Volume. I review theoretical developments of the recent years in non-perturbative supersymmetry. (orig.)
Theoretical Developments in SUSY
Shifman, M.
2009-01-01
I am proud that I was personally acquainted with Julius Wess. We first met in 1999 when I was working on the Yuri Golfand Memorial Volume (The Many Faces of the Superworld, World Scientific, Singapore, 2000). I invited him to contribute, and he accepted this invitation with enthusiasm. After that, we met many times, mostly at various conferences in Germany and elsewhere. I was lucky to discuss with Julius questions of theoretical physics, and hear his recollections on how supersymmetry was born. In physics Julius was a visionary, who paved the way to generations of followers. In everyday life he was a kind and modest person, always ready to extend a helping hand to people who were in need of his help. I remember him telling me how concerned he was about the fate of theoretical physicists in Eastern Europe after the demise of communism. His ties with Israeli physicists bore a special character. I am honored by the opportunity to contribute an article to the Julius Wess Memorial Volume. I will review theoretical developments of the recent years in non-perturbative supersymmetry.
J. Incandela
The all-plenary format of the CMS week in Cyprus gave the opportunity to the conveners of the physics groups to present the plans of each physics analysis group for tackling early physics analyses. The presentations were complete, so all are encouraged to browse through them on the Web. There is a wealth of information on what is going on, by whom and on what basis and priority. The CMS week was followed by two CMS “physics events”, the ICHEP08 days and the physics days in July. These were two weeks dedicated to either the approval of all the results that would be presented at ICHEP08, or to the review of all the other Monte-Carlo based analyses that were carried out in the context of our preparations for analysis with the early LHC data (the so-called “2008 analyses”). All this was planned in the context of the beginning of a ramp down of these Monte Carlo efforts, in anticipation of data. The ICHEP days are described below (agenda and talks at: http://indic...
Joe Incandela
There have been two plenary physics meetings since the December CMS week. The year started with two workshops, one on the measurements of the Standard Model necessary for “discovery physics” as well as one on the Physics Analysis Toolkit (PAT). Meanwhile the tail of the “2007 analyses” is going through the last steps of approval. It is expected that by the end of January all analyses will have converted to using the data from CSA07 – which include the effects of miscalibration and misalignment. January Physics Days The first Physics Days of 2008 took place on January 22-24. The first two days were devoted to comprehensive re¬ports from the Detector Performance Groups (DPG) and Physics Objects Groups (POG) on their planning and readiness for early data-taking followed by approvals of several recent studies. Highlights of POG presentations are included below while the activities of the DPGs are covered elsewhere in this bulletin. January 24th was devo...
Chris Hill
2012-01-01
The months that have passed since the last CMS Bulletin have been a very busy and exciting time for CMS physics. We have gone from observing the very first 8TeV collisions produced by the LHC to collecting a dataset of the collisions that already exceeds that recorded in all of 2011. All in just a few months! Meanwhile, the analysis of the 2011 dataset and publication of the subsequent results has continued. These results come from all the PAGs in CMS, including searches for the Higgs boson and other new phenomena, that have set the most stringent limits on an ever increasing number of models of physics beyond the Standard Model including dark matter, Supersymmetry, and TeV-scale gravity scenarios, top-quark physics where CMS has overtaken the Tevatron in the precision of some measurements, and bottom-quark physics where CMS made its first discovery of a new particle, the Ξ*0b baryon (candidate event pictured below). Image 2: A Ξ*0b candidate event At the same time POGs and PAGs...
Guenther Dissertori
The time period between the last CMS week and this June was one of intense activity with numerous get-together targeted at addressing specific issues on the road to data-taking. The two series of workshops, namely the “En route to discoveries” series and the “Vertical Integration” meetings continued. The first meeting of the “En route to discoveries” sequence (end 2007) had covered the measurements of the Standard Model signals as necessary prerequisite to any claim of signals beyond the Standard Model. The second meeting took place during the Feb CMS week and concentrated on the commissioning of the Physics Objects, whereas the third occurred during the April Physics Week – and this time the theme was the strategy for key new physics signatures. Both of these workshops are summarized below. The vertical integration meetings also continued, with two DPG-physics get-togethers on jets and missing ET and on electrons and photons. ...
D. Acosta
2011-01-01
Since the last CMS Week, all physics groups have been extremely active on analyses based on the full 2010 dataset, with most aiming for a preliminary measurement in time for the winter conferences. Nearly 50 analyses were approved in a “marathon” of approval meetings during the first two weeks of March, and the total number of approved analyses reached 90. The diversity of topics is very broad, including precision QCD, Top, and electroweak measurements, the first observation of single Top production at the LHC, the first limits on Higgs production at the LHC including the di-tau final state, and comprehensive searches for new physics in a wide range of topologies (so far all with null results unfortunately). Most of the results are based on the full 2010 pp data sample, which corresponds to 36 pb-1 at √s = 7 TeV. This report can only give a few of the highlights of a very rich physics program, which is listed below by physics group...
International Nuclear Information System (INIS)
1965-01-01
This Second Report 'IAEA Laboratory Activities' describes developments and scientific work during the year 1964. It reports on the activities of the Agency's Laboratory Vienna - Seibersdorf, the Marine Biological Project at Monaco, and the Middle Eastern Regional Radioisotope Centre for the Arab Countries. In addition, it contains a first, short review on the International Centre for Theoretical Physics at Trieste. This Centre was established in October 1963 and started its operations in 1964. The Report is similar to the first one published at the beginning of 1964, and is intended as a source of current information
Moriera, M. A.
1979-01-01
David Ausubel's learning theory was used as a framework for the content organization of an experimental Personalized System of Instruction (PSI) course in physics. Evaluation suggests that the combination of PSI as a method of instruction and Ausubel's theory for organization might result in better learning outcomes. (Author/JMD)
Papel dos cuidados intermÃ©dios num serviÃ§o de insuficientes respiratÃ³rios
Directory of Open Access Journals (Sweden)
Maria Fernanda Oliveira
2001-11-01
Full Text Available RESUMO: Na dÃ©cada de 60 surgiram na AmÃ©rica do Norte as primeiras Unidades de Cuidados IntermÃ©dios (UCInts como resposta Ã pressÃ£o na gestÃ£o dos internamentos e aos custos crescentes das camas das Unidades de Cuidados Intensivos (UCIs. O novo modelo de organizaÃ§Ã£o proposto estabelece uma hierarquizaÃ§Ã£o dos diferentes nÃveis de cuidados â Enfermaria, UCInts e UCIs â com base nos recursos materiais e humanos disponibilizados, tendo como objectivo a continuidade no tratamento hospitalar, sem perda de qualidade nem impacto negativo no resultado final, representando uma alternativa, com uma relaÃ§Ã£o custo/eficÃ¡cia favorÃ¡vel, para um nÃºmero significativo de doentes.As UCInts respiratÃ³rias sÃ£o vocacionadas para o tratamento de doentes ventilados mecanicamente, estÃ¡veis, para desmame ou tratamento crÃ³nico; para os doentes hemodinamicamente estÃ¡veis com doenÃ§a subjacente com potencial para agravamento da insuficiÃªncia respiratÃ³ria, requerendo observaÃ§Ã£o frequente e/ou ventilaÃ§Ã£o por pressÃ£o positiva contÃnua por mÃ¡scara; para os doentes que requerem monitorizaÃ§Ã£o frequente dos sinais vitais ou de fisioterapia respiratÃ³ria intensiva.O ServiÃ§o de Insuficientes RespiratÃ³rios (SIR do Departamento de Pneumologia do Hospital de Pulido Valente Ã© constituÃdo por uma Enfermaria com 26 camas, 8 das quais de Cuidados IntermÃ©dios (CInts, uma Unidade de Cuidados Intensivos (UCIP e um Hospital de Dia para Insuficientes RespiratÃ³rios (HDIR.No sentido de avaliar o trabalho realizado nos CInts, efectuou-se uma revisÃ£o do arquivo clÃnico de todos os doentes aÃ internados, entre 1 de Janeiro de 1995 e 31 de Dezembro de 2000.Resultados: neste perÃodo registaram-se 545 internamentos (167 mulheres e 378 homens, com uma idade mÃ©dia de 64 anos (14-92. Em 34% dos casos os doentes eram provenientes da UCIP, em 19% da Enfermaria e em 4% do
Theoretical astrophysics an introduction
Bartelmann, Matthias
2013-01-01
A concise yet comprehensive introduction to the central theoretical concepts of modern astrophysics, presenting hydrodynamics, radiation, and stellar dynamics all in one textbook. Adopting a modular structure, the author illustrates a small number of fundamental physical methods and principles, which are sufficient to describe and understand a wide range of seemingly very diverse astrophysical phenomena and processes. For example, the formulae that define the macroscopic behavior of stellar systems are all derived in the same way from the microscopic distribution function. This function it
Shivamoggi, Bhimsen K
1998-01-01
"Although there are many texts and monographs on fluid dynamics, I do not know of any which is as comprehensive as the present book. It surveys nearly the entire field of classical fluid dynamics in an advanced, compact, and clear manner, and discusses the various conceptual and analytical models of fluid flow." - Foundations of Physics on the first edition. Theoretical Fluid Dynamics functions equally well as a graduate-level text and a professional reference. Steering a middle course between the empiricism of engineering and the abstractions of pure mathematics, the author focuses
the PAG conveners
2011-01-01
The delivered LHC integrated luminosity of more than 1 inverse femtobarn by summer and more than 5 by the end of 2011 has been a gold mine for the physics groups. With 2011 data, we have submitted or published 14 papers, 7 others are in collaboration-wide review, and 75 Physics Analysis Summaries have been approved already. They add to the 73 papers already published based on the 2010 and 2009 datasets. Highlights from each physics analysis group are described below. Heavy ions Many important results have been obtained from the first lead-ion collision run in 2010. The published measurements include the first ever indications of Υ excited state suppression (PRL synopsis), long-range correlation in PbPb, and track multiplicity over a wide η range. Preliminary results include the first ever measurement of isolated photons (showing no modification), J/ψ suppression including the separation of the non-prompt component, further study of jet fragmentation, nuclear modification factor...
D. Acosta
2010-01-01
The Physics Groups are actively engaged on analyses of the first data from the LHC at 7 TeV, targeting many results for the ICHEP conference taking place in Paris this summer. The first large batch of physics approvals is scheduled for this CMS Week, to be followed by four more weeks of approvals and analysis updates leading to the start of the conference in July. Several high priority analysis areas were organized into task forces to ensure sufficient coverage from the relevant detector, object, and analysis groups in the preparation of these analyses. Already some results on charged particle correlations and multiplicities in 7 TeV minimum bias collisions have been approved. Only one small detail remains before ICHEP: further integrated luminosity delivered by the LHC! Beyond the Standard Model measurements that can be done with these data, the focus changes to the search for new physics at the TeV scale and for the Higgs boson in the period after ICHEP. Particle Flow The PFT group is focusing on the ...
C. Hill
2012-01-01
The period since the last CMS Bulletin has been historic for CMS Physics. The pinnacle of our physics programme was an observation of a new particle – a strong candidate for a Higgs boson – which has captured worldwide interest and made a profound impact on the very field of particle physics. At the time of the discovery announcement on 4 July, 2012, prominent signals were observed in the high-resolution H→γγ and H→ZZ(4l) modes. Corroborating excess was observed in the H→W+W– mode as well. The fermionic channel analyses (H→bb, H→ττ), however, yielded less than the Standard Model (SM) expectation. Collectively, the five channels established the signal with a significance of five standard deviations. With the exception of the diphoton channel, these analyses have all been updated in the last months and several new channels have been added. With improved analyses and more than twice the i...
L. Demortier
Physics-wise, the CMS week in December was dominated by discussions of the analyses that will be carried out in the “next six months”, i.e. while waiting for the first LHC collisions. As presented in December, analysis approvals based on Monte Carlo simulation were re-opened, with the caveat that for this work to be helpful to the goals of CMS, it should be carried out using the new software (CMSSW_2_X) and associated samples. By the end of the week, the goal for the physics groups was set to be the porting of our physics commissioning methods and plans, as well as the early analyses (based an integrated luminosity in the range 10-100pb-1) into this new software. Since December, the large data samples from CMSSW_2_1 were completed. A big effort by the production group gave a significant number of events over the end-of-year break – but also gave out the first samples with the fast simulation. Meanwhile, as mentioned in December, the arrival of 2_2 meant that ...
Darin Acosta
2010-01-01
The collisions last year at 900 GeV and 2.36 TeV provided the long anticipated collider data to the CMS physics groups. Quite a lot has been accomplished in a very short time. Although the delivered luminosity was small, CMS was able to publish its first physics paper (with several more in preparation), and commence the commissioning of physics objects for future analyses. Many new performance results have been approved in advance of this CMS Week. One remarkable outcome has been the amazing agreement between out-of-the-box data with simulation at these low energies so early in the commissioning of the experiment. All of this is testament to the hard work and preparation conducted beforehand by many people in CMS. These analyses could not have happened without the dedicated work of the full collaboration on building and commissioning the detector, computing, and software systems combined with the tireless work of many to collect, calibrate and understand the data and our detector. To facilitate the efficien...
C. Hill
2012-01-01
2012 has started off as a very busy year for the CMS Physics Groups. Planning for the upcoming higher luminosity/higher energy (8 TeV) operation of the LHC and relatively early Rencontres de Moriond are the high-priority activities for the group at the moment. To be ready for the coming 8-TeV data, CMS has made a concerted effort to perform and publish analyses on the 5 fb−1 dataset recorded in 2011. This has resulted in the submission of 16 papers already, including nine on the search for the Higgs boson. In addition, a number of preliminary results on the 2011 dataset have been released to the public. The Exotica and SUSY groups approved several searches for new physics in January, such as searches for W′ and exotic highly ionising particles. These were highlighted at a CERN seminar given on 24th January. Many more analyses, from all the PAGs, including the newly formed SMP (Standard Model Physics) and FSQ (Forward and Small-x QCD), were approved in February. The ...
Pavšič, Matej
2002-01-01
This a book is for those who would like to learn something about special and general relativity beyond the usual textbooks, about quantum field theory, the elegant Fock-Schwinger-Stueckelberg proper time formalism, the elegant description of geometry by means of Clifford algebra, about the fascinating possibilities the latter algebra offers in reformulating the existing physical theories, and quantizing them in a natural way. It is shown how Clifford algebra provides much more: it provides room for new physics, with the prospects of resolving certain long standing puzzles. The theory of branes and the idea of how a 3-brane might represent our world is discussed in detail. Much attention is paid to the elegant geometric theory of branes which employs the infinite dimensional space of functions describing branes. Clifford algebra is generalized to the infinite dimensional spaces. In short, this is a book for anybody who would like to explore how the ``theory of everything'' might possibly be formulated. The the...
Sebire, Simon J.; Kesten, Joanna M.; Edwards, Mark J.; May, Thomas; Banfield, Kathryn; Tomkinson, Keeley; Blair, Peter S.; Bird, Emma L.; Powell, Jane E.; Jago, Russell
2016-01-01
Objectives: To report the theory-based process evaluation of the Bristol Girls’ Dance Project, a cluster-randomised controlled trial to increase adolescent girls’ physical activity. Design: A mixed-method process evaluation of the intervention’s self-determination theory components comprising lesson observations, post-intervention interviews and focus groups. Method: Four intervention dance lessons per dance instructor were observed, audio recorded and rated to estimate the use of need-suppo...
Energy Technology Data Exchange (ETDEWEB)
1998-12-31
This status report presents the work done at SPhT (service de physique theorique, CEA) from june 96 to may 98. The topics have been classified into 3 themes: - statistical physics, - mathematical physics and field theory, - astrophysics, nuclear and particle physics. In the first theme relevant contributions have been made to phase transitions, correlated electronic systems, polymers, membranes, proteins, disordered systems and out of equilibrium processes. The second theme collects various works, some works dedicated to aleatory matrices and quantum chaos aim at developing investigation methods, other works like cord theories use these methods. As for the third theme, the recent discovery of the fluctuations of background cosmological radiation has fomented a great activity at SPhT. Mean field approximation and effective strength have been the starting point of research in the field of nuclear structure. High energy quantum chromodynamics has been applied to deep inelastic scattering where the proton structure is studied through electron-proton collisions. A list of all the publications made by SPhT is given. (A.C.)
Theoretical Molecular Biophysics
Scherer, Philipp
2010-01-01
"Theoretical Molecular Biophysics" is an advanced study book for students, shortly before or after completing undergraduate studies, in physics, chemistry or biology. It provides the tools for an understanding of elementary processes in biology, such as photosynthesis on a molecular level. A basic knowledge in mechanics, electrostatics, quantum theory and statistical physics is desirable. The reader will be exposed to basic concepts in modern biophysics such as entropic forces, phase separation, potentials of mean force, proton and electron transfer, heterogeneous reactions coherent and incoherent energy transfer as well as molecular motors. Basic concepts such as phase transitions of biopolymers, electrostatics, protonation equilibria, ion transport, radiationless transitions as well as energy- and electron transfer are discussed within the frame of simple models.
C. Hill
2013-01-01
The period since the last CMS bulletin has seen the end of proton collisions at a centre-of-mass energy 8 TeV, a successful proton-lead collision run at 5 TeV/nucleon, as well as a “reference” proton run at 2.76 TeV. With these final LHC Run 1 datasets in hand, CMS Physics Analysis Groups have been busy analysing these data in preparation for the winter conferences. Moreover, despite the fact that the pp run only concluded in mid-December (and there was consequently less time to complete data analyses), CMS again made a strong showing at the Rencontres de Moriond in La Thuile (EW and QCD) where nearly 40 new results were presented. The highlight of these preliminary results was the eagerly anticipated updated studies of the properties of the Higgs boson discovered in July of last year. Meanwhile, preparations for Run 2 and physics performance studies for Phase 1 and Phase 2 upgrade scenarios are ongoing. The Higgs analysis group produced updated analyses on the full Run 1 dataset (~25 f...
C. Hill
2013-01-01
In the period since the last CMS Bulletin, the LHC – and CMS – have entered LS1. During this time, CMS Physics Analysis Groups have performed more than 40 new analyses, many of which are based on the complete 8 TeV dataset delivered by the LHC in 2012 (and in some cases on the full Run 1 dataset). These results were shown at, and well received by, several high-profile conferences in the spring of 2013, including the inaugural meeting of the Large Hadron Collider Physics Conference (LHCP) in Barcelona, and the 26th International Symposium on Lepton Photon Interactions at High Energies (LP) in San Francisco. In parallel, there have been significant developments in preparations for Run 2 of the LHC and on “future physics” studies for both Phase 1 and Phase 2 upgrades of the CMS detector. The Higgs analysis group produced five new results for LHCP including a new H-to-bb search in VBF production (HIG-13-011), ttH with H to γ&ga...
J. D'Hondt
The Electroweak and Top Quark Workshop (16-17th of July) A Workshop on Electroweak and Top Quark Physics, dedicated on early measurements, took place on 16th-17th July. We had more than 40 presentations at the Workshop, which was an important milestone for 2007 physics analyses in the EWK and TOP areas. The Standard Model has been tested empirically by many previous experiments. Observables which are nowadays known with high precision will play a major role for data-based CMS calibrations. A typical example is the use of the Z to monitor electron and muon reconstruction in di-lepton inclusive samples. Another example is the use of the W mass as a constraint for di-jets in the kinematic fitting of top-quark events, providing information on the jet energy scale. The predictions of the Standard Model, for what concerns proton collisions at the LHC, are accurate to a level that the production of W/Z and top-quark events can be used as a powerful tool to commission our experiment. On the other hand the measure...
Christopher Hill
2013-01-01
Since the last CMS Bulletin, the CMS Physics Analysis Groups have completed more than 70 new analyses, many of which are based on the complete Run 1 dataset. In parallel the Snowmass whitepaper on projected discovery potential of CMS for HL-LHC has been completed, while the ECFA HL-LHC future physics studies has been summarised in a report and nine published benchmark analyses. Run 1 summary studies on b-tag and jet identification, quark-gluon discrimination and boosted topologies have been documented in BTV-13-001 and JME-13-002/005/006, respectively. The new tracking alignment and performance papers are being prepared for submission as well. The Higgs analysis group produced several new results including the search for ttH with H decaying to ZZ, WW, ττ+bb (HIG-13-019/020) where an excess of ~2.5σ is observed in the like-sign di-muon channel, and new searches for high-mass Higgs bosons (HIG-13-022). Search for invisible Higgs decays have also been performed both using the associ...