The Development of Nonlinear Science£
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Stanislav Nikolaevich Rodionov (–)
SCIENCE & GLOBAL SECURITY ,VOL.,NO.,– http://dx.doi.org/./.. Memoriam: Stanislav Nikolaevich Rodionov (–) Oleg Prilutsky and Frank von Hippel Stanislav Rodionov was a member of the first post-World War II generation of Soviet physicists. He began his scientific career in 1953 in what is now known as the National Research Center “Kurchatov Institute” where he carried out an exper- iment in which, for the first time in the Soviet Union, he captured electrons from tritium decay in a magnetic mirror adiabatic trap. From 1958 to 1973, he worked in the Nuclear Physics Institute of the Siberian Division of USSR Academy of Sciences in Akademgorodok near Novosibirsk. Dur- ing the 1960s, while Rodionov was there, this institute, directed by Academician Budker, built one of the first electron-positron colliders in the world (VEPP-2). Rodionov played a very important scientific-organizational role as the Secretary of the institute’s Scientific Council—its “Round Table.” In 1974, Rodionov returned to Moscow to join the staff of the Soviet Academy of Sciences’ Space Research Institute (IKI) directed by Roald Sagdeev. There he partici- pated in the organization of international collaborations in space research programs, which was a pioneering contribution to opening up Soviet science to the world. Rodionov also supported Sagdeev in doing arms-control research under the aus- pices of the Committee of Soviet Scientists for Peace and Against the Nuclear Threat. This Committee was established during a 17–19 May 1983 All-Union conference of scientists within the Soviet Academy called in response to President Reagan’s 23 MarchspeechaskingAmericanscientiststojoininaStrategicDefenseInitiative to make nuclear-armed ballistic missiles “impotent and obsolete.” Evgeny Velikhov was the first chairman with Sagdeev, Sergei Kapitza and Andrei Kokoshin as his Vice Chairmen. -
Robust Learning of Chaotic Attractors
Robust Learning of Chaotic Attractors Rembrandt Bakker* Jaap C. Schouten Marc-Olivier Coppens Chemical Reactor Engineering Chemical Reactor Engineering Chemical Reactor Engineering Delft Univ. of Technology Eindhoven Univ. of Technology Delft Univ. of Technology [email protected]·nl [email protected] [email protected]·nl Floris Takens C. Lee Giles Cor M. van den Bleek Dept. Mathematics NEC Research Institute Chemical Reactor Engineering University of Groningen Princeton Nl Delft Univ. of Technology F. [email protected] [email protected] [email protected]·nl Abstract A fundamental problem with the modeling of chaotic time series data is that minimizing short-term prediction errors does not guarantee a match between the reconstructed attractors of model and experiments. We introduce a modeling paradigm that simultaneously learns to short-tenn predict and to locate the outlines of the attractor by a new way of nonlinear principal component analysis. Closed-loop predictions are constrained to stay within these outlines, to prevent divergence from the attractor. Learning is exceptionally fast: parameter estimation for the 1000 sample laser data from the 1991 Santa Fe time series competition took less than a minute on a 166 MHz Pentium PC. 1 Introduction We focus on the following objective: given a set of experimental data and the assumption that it was produced by a deterministic chaotic system, find a set of model equations that will produce a time-series with identical chaotic characteristics, having the same chaotic attractor. The common approach consists oftwo steps: (1) identify a model that makes accurate short tenn predictions; and (2) generate a long time-series with the model and compare the nonlinear-dynamic characteristics of this time-series with the original, measured time-series. -
New Mathematics for Old Physics: the Case of Lattice Fluids Anouk Barberousse, Cyrille Imbert
New mathematics for old physics: The case of lattice fluids Anouk Barberousse, Cyrille Imbert To cite this version: Anouk Barberousse, Cyrille Imbert. New mathematics for old physics: The case of lattice fluids. Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics, Elsevier, 2013, 44 (3), pp.231-241. 10.1016/j.shpsb.2013.03.003. halshs-00791435 HAL Id: halshs-00791435 https://halshs.archives-ouvertes.fr/halshs-00791435 Submitted on 2 Sep 2021 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. New Mathematics for Old Physics: The Case of Lattice Fluids AnoukBarberousse & CyrilleImbert ·Abstract We analyze the effects of the introduction of new mathematical tools on an old branch of physics by focusing on lattice fluids, which are cellular automata (CA)-based hydrodynamical models. We examine the nature of these discrete models, the type of novelty they bring about within scientific practice and the role they play in the field of fluid dynamics. We critically analyze Rohrlich', Keller's and Hughes' claims about CA-based models. We distinguish between different senses of the predicates “phenomenological” and “theoretical” for scientific models and argue that it is erroneous to conclude, as they do, that CA-based models are necessarily phenomenological in any sense of the term. -
Twenty Female Mathematicians Hollis Williams
Twenty Female Mathematicians Hollis Williams Acknowledgements The author would like to thank Alba Carballo González for support and encouragement. 1 Table of Contents Sofia Kovalevskaya ................................................................................................................................. 4 Emmy Noether ..................................................................................................................................... 16 Mary Cartwright ................................................................................................................................... 26 Julia Robinson ....................................................................................................................................... 36 Olga Ladyzhenskaya ............................................................................................................................. 46 Yvonne Choquet-Bruhat ....................................................................................................................... 56 Olga Oleinik .......................................................................................................................................... 67 Charlotte Fischer .................................................................................................................................. 77 Karen Uhlenbeck .................................................................................................................................. 87 Krystyna Kuperberg ............................................................................................................................. -
Temperature Superconductivity
SOLITON AND BISOLITON MODEL FOR PAIRING MECHANISM OF HIGH - TEMPERATURE SUPERCONDUCTIVITY Samnao Phatisena* Received: Nov 3, 2005; Revised: Jun 12, 2006; Accepted: Jun 19, 2006 Abstract Soliton is a nonlinear solitary wave moving without energy loss and without changing its form and velocity. It has particlelike properties. The extraordinary stability of solitons is due to the mutual compensation of two phenomena, dispersion and nonlinearity. Solitons can be paired in a singlet state called bisoliton due to the interaction with local chain deformation created by them. Bisolitons are Bose particles and when their concentration is higher or lower than some critical values they can move without resistance. The bisoliton model can be applied for a pairing mechanism in cuprate superconductors due to their layered structure and the relatively small density of charge carriers. Cooper pairs breaking is a result of a paramagnetic effect and the Landau diamagnetic effect. The influence of magnetic impurities and the Meissner effect on cuprate superconductor based on the concepts of the bisoliton model are discussed. Keywords: Soliton, bisoliton, pairing mechanism, cuprate superconductors, paramagnetic effect, diamagnetic effect, Meissner effect Introduction The fascinating nonlinear wave structures known is exactly compensated by the reverse phenomenon, as solitary waves or solitons have become a namely, nonlinear self-compression of the wave subject of deeply interested for physicists in packet, and therefore the soliton propagates recent years. A soliton is a wave packet in which without spreading out and it conservs its shape. the wave field is localized in a limited (generally Thus, soliton is a nonspreading, nonlinear wave propagating) spatial region and is absent outside packet in which the phases and amplitudes of this region. -
A 1 Case-PR/ }*Rciofft.;Is Report
.A 1 case-PR/ }*rciofft.;is Report (a) This eruption site on Mauna Loa Volcano was the main source of the voluminous lavas that flowed two- thirds of the distance to the town of Hilo (20 km). In the interior of the lava fountains, the white-orange color indicates maximum temperatures of about 1120°C; deeper orange in both the fountains and flows reflects decreasing temperatures (<1100°C) at edges and the surface. (b) High winds swept the exposed ridges, and the filter cannister was changed in the shelter of a p^hoehoc (lava) ridge to protect the sample from gas contamination. (c) Because of the high temperatures and acid gases, special clothing and equipment was necessary to protect the eyes. nose, lungs, and skin. Safety features included military flight suits of nonflammable fabric, fuil-face respirators that are equipped with dual acidic gas filters (purple attachments), hard hats, heavy, thick-soled boots, and protective gloves. We used portable radios to keep in touch with the Hawaii Volcano Observatory, where the area's seismic activity was monitored continuously. (d) Spatter activity in the Pu'u O Vent during the January 1984 eruption of Kilauea Volcano. Magma visible in the circular conduit oscillated in a piston-like fashion; spatter was ejected to heights of 1 to 10 m. During this activity, we sampled gases continuously for 5 hours at the west edge. Cover photo: This aerial view of Kilauea Volcano was taken in April 1984 during overflights to collect gas samples from the plume. The bluish portion of the gas plume contained a far higher density of fine-grained scoria (ash). -
Learning from Benoit Mandelbrot
2/28/18, 7(59 AM Page 1 of 1 February 27, 2018 Learning from Benoit Mandelbrot If you've been reading some of my recent posts, you will have noted my, and the Investment Masters belief, that many of the investment theories taught in most business schools are flawed. And they can be dangerous too, the recent Financial Crisis is evidence of as much. One man who, prior to the Financial Crisis, issued a challenge to regulators including the Federal Reserve Chairman Alan Greenspan, to recognise these flaws and develop more realistic risk models was Benoit Mandelbrot. Over the years I've read a lot of investment books, and the name Benoit Mandelbrot comes up from time to time. I recently finished his book 'The (Mis)Behaviour of Markets - A Fractal View of Risk, Ruin and Reward'. So who was Benoit Mandelbrot, why is he famous, and what can we learn from him? Benoit Mandelbrot was a Polish-born mathematician and polymath, a Sterling Professor of Mathematical Sciences at Yale University and IBM Fellow Emeritus (Physics) who developed a new branch of mathematics known as 'Fractal' geometry. This geometry recognises the hidden order in the seemingly disordered, the plan in the unplanned, the regular pattern in the irregularity and roughness of nature. It has been successfully applied to the natural sciences helping model weather, study river flows, analyse brainwaves and seismic tremors. A 'fractal' is defined as a rough or fragmented shape that can be split into parts, each of which is at least a close approximation of its original-self. -
Plasma Physics in the 20Th Century As Told by Players”
Eur. Phys. J. H 43, 337{353 (2018) https://doi.org/10.1140/epjh/e2018-90061-5 THE EUROPEAN PHYSICAL JOURNAL H Editorial Editorial introduction to the special issue \Plasma physics in the 20th century as told by players" Patrick H. Diamond1,a , Uriel Frisch2, and Yves Pomeau3 1 University of California San Diego, La Jolla, CA 92093-0319, USA 2 Universit´eC^oted'Azur, OCA, Lab. Lagrange, CS 34229, 06304 Nice Cedex 4, France 3 Ladhyx, Ecole´ Polytechnique, Palaiseau, France Received 31 October 2018 Published online 30 November 2018 c EDP Sciences, Springer-Verlag GmbH Germany, part of Springer Nature, 2018 Our ancestors lived in a world where { as far as they were aware { electrons and ions lived happily bound together. But with suitable conditions, e.g. low density and/or high temperature, electrons and ions will unbind and we obtain a plasma, a state of matter of which we became increasingly aware in the 20th century, and which pervades our universe near and far. There are also many applications of plasma physics: chip etching, TV screens, torches, propulsion, fusion (through magnetic or inertial confinement), astrophysics and space physics, and laser physics, to cite just a few. At the crossroads of electrodynamics, continuum physics, kinetic theory and nonlinear physics, plasma physics enjoys an abundance of riches. Actually, so much that we can only cover a fraction of its history in this limited volume. The history of plasma physics presented here covers mostly the period from 1950 to 2000. The issue is focussed both on fundamentals and on applications in controlled fusion through magnetic confinement, which in turn raises a host of fundamental and interesting questions in various areas. -
Selftrapping, Biomolecules and Free Electron Lasers
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by UCL Discovery INSTITUTE OF PHYSICS PUBLISHING JOURNAL OF PHYSICS: CONDENSED MATTER J. Phys.: Condens. Matter 15 (2003) V5–V9 PII: S0953-8984(03)61522-5 VIEWPOINT Selftrapping, biomolecules and free electron lasers Per-Anker Lindgård1,2 and A Marshall Stoneham3 1 Materials Research Department, Risø National Laboratory, DK-4000 Roskilde, Denmark 2 QUPCentre, Danish Technical University, DK-2800 Lyngby, Denmark 3 Department of Physics and Astronomy, University College London, Gower Street, London, WC1E 6 BT, UK Received 1 April 2003 Published 28 April 2003 Online at stacks.iop.org/JPhysCM/15/V5 Forasolid-state physicist, the controlled movement of energy and charge are central phenomena. Novel materials have often pointed to new mechanisms: self-trapping in halides giving energy localization, the incoherent motion of small polarons in colossal magnetoresistance oxides, solitons in conducting polymers, magnetic polarons in magnetic semiconductors, the quantum motion of electrons in mesoscopic metals, the regimes of both coherent and incoherent quantum propagation of muons in solids, and so on. The issues of energy and charge transport are equally crucial in living matter, but are understood less well. How can the energy from light or chemical processes be moved around and used efficiently? The important paper by Austin et al (2003) in this special issue shows that new experimental tools, using the ultra short, tunable laser pulses from free electron lasers, open up the possibility of resolving outstanding problems in understanding the energy and charge processes which underpin life itself. -
Writing the History of Dynamical Systems and Chaos
Historia Mathematica 29 (2002), 273–339 doi:10.1006/hmat.2002.2351 Writing the History of Dynamical Systems and Chaos: View metadata, citation and similar papersLongue at core.ac.uk Dur´ee and Revolution, Disciplines and Cultures1 brought to you by CORE provided by Elsevier - Publisher Connector David Aubin Max-Planck Institut fur¨ Wissenschaftsgeschichte, Berlin, Germany E-mail: [email protected] and Amy Dahan Dalmedico Centre national de la recherche scientifique and Centre Alexandre-Koyre,´ Paris, France E-mail: [email protected] Between the late 1960s and the beginning of the 1980s, the wide recognition that simple dynamical laws could give rise to complex behaviors was sometimes hailed as a true scientific revolution impacting several disciplines, for which a striking label was coined—“chaos.” Mathematicians quickly pointed out that the purported revolution was relying on the abstract theory of dynamical systems founded in the late 19th century by Henri Poincar´e who had already reached a similar conclusion. In this paper, we flesh out the historiographical tensions arising from these confrontations: longue-duree´ history and revolution; abstract mathematics and the use of mathematical techniques in various other domains. After reviewing the historiography of dynamical systems theory from Poincar´e to the 1960s, we highlight the pioneering work of a few individuals (Steve Smale, Edward Lorenz, David Ruelle). We then go on to discuss the nature of the chaos phenomenon, which, we argue, was a conceptual reconfiguration as -
Role of Nonlinear Dynamics and Chaos in Applied Sciences
v.;.;.:.:.:.;.;.^ ROLE OF NONLINEAR DYNAMICS AND CHAOS IN APPLIED SCIENCES by Quissan V. Lawande and Nirupam Maiti Theoretical Physics Oivisipn 2000 Please be aware that all of the Missing Pages in this document were originally blank pages BARC/2OOO/E/OO3 GOVERNMENT OF INDIA ATOMIC ENERGY COMMISSION ROLE OF NONLINEAR DYNAMICS AND CHAOS IN APPLIED SCIENCES by Quissan V. Lawande and Nirupam Maiti Theoretical Physics Division BHABHA ATOMIC RESEARCH CENTRE MUMBAI, INDIA 2000 BARC/2000/E/003 BIBLIOGRAPHIC DESCRIPTION SHEET FOR TECHNICAL REPORT (as per IS : 9400 - 1980) 01 Security classification: Unclassified • 02 Distribution: External 03 Report status: New 04 Series: BARC External • 05 Report type: Technical Report 06 Report No. : BARC/2000/E/003 07 Part No. or Volume No. : 08 Contract No.: 10 Title and subtitle: Role of nonlinear dynamics and chaos in applied sciences 11 Collation: 111 p., figs., ills. 13 Project No. : 20 Personal authors): Quissan V. Lawande; Nirupam Maiti 21 Affiliation ofauthor(s): Theoretical Physics Division, Bhabha Atomic Research Centre, Mumbai 22 Corporate authoifs): Bhabha Atomic Research Centre, Mumbai - 400 085 23 Originating unit : Theoretical Physics Division, BARC, Mumbai 24 Sponsors) Name: Department of Atomic Energy Type: Government Contd...(ii) -l- 30 Date of submission: January 2000 31 Publication/Issue date: February 2000 40 Publisher/Distributor: Head, Library and Information Services Division, Bhabha Atomic Research Centre, Mumbai 42 Form of distribution: Hard copy 50 Language of text: English 51 Language of summary: English 52 No. of references: 40 refs. 53 Gives data on: Abstract: Nonlinear dynamics manifests itself in a number of phenomena in both laboratory and day to day dealings. -
April 17-19, 2018 the 2018 Franklin Institute Laureates the 2018 Franklin Institute AWARDS CONVOCATION APRIL 17–19, 2018
april 17-19, 2018 The 2018 Franklin Institute Laureates The 2018 Franklin Institute AWARDS CONVOCATION APRIL 17–19, 2018 Welcome to The Franklin Institute Awards, the a range of disciplines. The week culminates in a grand United States’ oldest comprehensive science and medaling ceremony, befitting the distinction of this technology awards program. Each year, the Institute historic awards program. celebrates extraordinary people who are shaping our In this convocation book, you will find a schedule of world through their groundbreaking achievements these events and biographies of our 2018 laureates. in science, engineering, and business. They stand as We invite you to read about each one and to attend modern-day exemplars of our namesake, Benjamin the events to learn even more. Unless noted otherwise, Franklin, whose impact as a statesman, scientist, all events are free, open to the public, and located in inventor, and humanitarian remains unmatched Philadelphia, Pennsylvania. in American history. Along with our laureates, we celebrate his legacy, which has fueled the Institute’s We hope this year’s remarkable class of laureates mission since its inception in 1824. sparks your curiosity as much as they have ours. We look forward to seeing you during The Franklin From sparking a gene editing revolution to saving Institute Awards Week. a technology giant, from making strides toward a unified theory to discovering the flow in everything, from finding clues to climate change deep in our forests to seeing the future in a terahertz wave, and from enabling us to unplug to connecting us with the III world, this year’s Franklin Institute laureates personify the trailblazing spirit so crucial to our future with its many challenges and opportunities.