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Computer Simulation Studies in Condensed-Matter Physics XVII: Proceedings of the Seventeenth Workshop, Athens, GA, USA, February 16-20, 2004 (Springer Proceedings in Physics #103)

by David P. Landau Steven P. Lewis Heinz-Bernd Schüttler

Over ?fteen years ago, because of the tremendous increase in the power and utility of computer simulations, The University of Georgia formed the ?rst institutional unit devoted to the use of simulations in research and teaching: The Center for Simulational Physics. As the international simulations c- munityexpandedfurther,wesensedaneedforameetingplaceforbothex- riencedsimulatorsandneophytestodiscussnewtechniquesandrecentresults in an environment which promoted lively discussion. As a consequence, the Center for Simulational Physics established an annual workshop on Recent DevelopmentsinComputerSimulationStudiesinCondensedMatterPhysics. This year’s workshop was the seventeenth in this series, and the continued interest shown by the scienti?c community demonstrates quite clearly the useful purpose that these meetings have served. The latest workshop was held at The University of Georgia, February 16–20, 2004, and these proce- ings provide a “status report” on a number of important topics. This volume is published with the goal of timely dissemination of the material to a wider audience. We wish to o?er a special thanks to IBM and to SGI for partial support of this year’s workshop. This volume contains both invited papers and contributed presentations on problems in both classical and quantum condensed matter physics. We hope that each reader will bene?t from specialized results as well as pro?t from exposure to new algorithms, methods of analysis, and conceptual dev- opments.

Computer Simulation Studies in Condensed-Matter Physics XVIII: Proceedings of the Eighteenth Workshop, Athens, GA, USA, March 7-11, 2005 (Springer Proceedings in Physics #105)

by David P. Landau Steven P. Lewis Heinz-Bernd Schüttler

This status report features the most recent developments in the field, spanning a wide range of topical areas in the computer simulation of condensed matter/materials physics. Both established and new topics are included, ranging from the statistical mechanics of classical magnetic spin models to electronic structure calculations, quantum simulations, and simulations of soft condensed matter.

Computer Simulation Tools for X-ray Analysis: Scattering and Diffraction Methods (Graduate Texts in Physics)

by Sérgio Luiz Morelhão

This book teaches the users on how to construct a library of routines to simulate scattering and diffraction by almost any kind of samples. The main goal of this book is to break down the huge barrier of difficulties faced by beginners from many fields (Engineering, Physics, Chemistry, Biology, Medicine, Material Science, etc.) in using X-rays as an analytical tool in their research. Besides fundamental concepts, MatLab routines are provided, showing how to test and implement the concepts. The major difficult in analysing materials by X-ray techniques is that it strongly depends on simulation software. This book teaches the users on how to construct a library of routines to simulate scattering and diffraction by almost any kind of samples. It provides to a young student the knowledge that would take more than 20 years to acquire by working on X-rays and relying on the available textbooks. The scientific productivity worldwide is growing at a breakneck pace, demanding ever more dynamic approaches and synergies between different fields of knowledge. To master the fundamentals of X-ray physics means the opportunity of working at an infiniteness of fields, studying systems where the organizational understanding of matter at the atomic scale is necessary. Since the discovery of X radiation, its usage as investigative tool has always been under fast expansion afforded by instrumental advances and computational resources. Developments in medical and technological fields have, as one of the master girders, the feasibility of structural analysis offered by X-rays. One of the major difficulties faced by beginners in using this fantastic tool lies in the analysis of experimental data. There are only few cases where it is possible to extract structural information directly from experiments. In most cases, structure models and simulation of radiation-matter interaction processes are essential. The advent of intense radiation sources and rapid development of nanotechnology constantly creates challenges that seek solutions beyond those offered by standard X-ray techniques. Preparing new researchers for this scenario of rapid and drastic changes requires more than just teaching theories of physical phenomena. It also requires teaching of how to implement them in a simple and efficient manner. In this book, fundamental concepts in applied X-ray physics are demonstrated through available computer simulation tools. Using MatLab, more than eighty routines are developed for solving the proposed exercises, most of which can be directly used in experimental data analysis. Therefore, besides X-ray physics, this book offers a practical programming course in modern high-level language, with plenty of graphic and mathematical tools.

Computer Simulation Using Particles

by R.W Hockney J.W Eastwood

Computer simulation of systems has become an important tool in scientific research and engineering design, including the simulation of systems through the motion of their constituent particles. Important examples of this are the motion of stars in galaxies, ions in hot gas plasmas, electrons in semiconductor devices, and atoms in solids and liquids. The behavior of the system is studied by programming into the computer a model of the system and then performing experiments with this model. New scientific insight is obtained by observing such computer experiments, often for controlled conditions that are not accessible in the laboratory. Computer Simulation using Particles deals with the simulation of systems by following the motion of their constituent particles. This book provides an introduction to simulation using particles based on the NGP, CIC, and P3M algorithms and the programming principles that assist with the preparations of large simulation programs based on the OLYMPUS methodology. It also includes case study examples in the fields of astrophysics, plasmas, semiconductors, and ionic solids as well as more detailed mathematical treatment of the models, such as their errors, dispersion, and optimization.This resource will help you understand how engineering design can be assisted by the ability to predict performance using the computer model before embarking on costly and time-consuming manufacture.

Computer Simulation Using Particles

by R.W Hockney J.W Eastwood

Computer simulation of systems has become an important tool in scientific research and engineering design, including the simulation of systems through the motion of their constituent particles. Important examples of this are the motion of stars in galaxies, ions in hot gas plasmas, electrons in semiconductor devices, and atoms in solids and liquids. The behavior of the system is studied by programming into the computer a model of the system and then performing experiments with this model. New scientific insight is obtained by observing such computer experiments, often for controlled conditions that are not accessible in the laboratory. Computer Simulation using Particles deals with the simulation of systems by following the motion of their constituent particles. This book provides an introduction to simulation using particles based on the NGP, CIC, and P3M algorithms and the programming principles that assist with the preparations of large simulation programs based on the OLYMPUS methodology. It also includes case study examples in the fields of astrophysics, plasmas, semiconductors, and ionic solids as well as more detailed mathematical treatment of the models, such as their errors, dispersion, and optimization.This resource will help you understand how engineering design can be assisted by the ability to predict performance using the computer model before embarking on costly and time-consuming manufacture.

Computer Simulations in Condensed Matter: From Materials to Chemical Biology. Volume 1 (Lecture Notes in Physics #703)

by Mauro Ferrario Giovanni Ciccotti Kurt Binder

This comprehensive collection of lectures by leading experts in the field introduces and reviews all relevant computer simulation methods and their applications in condensed matter systems. Volume 1 is an in-depth introduction to a vast spectrum of computational techniques for statistical mechanical systems of condensed matter. Volume 2 is a collection of state-of-the-art surveys on numerical experiments carried out for a great number of systems.

Computer Simulations in Condensed Matter: From Materials to Chemical Biology. Volume 2 (Lecture Notes in Physics #704)

by Mauro Ferrario Giovanni Ciccotti Kurt Binder

This extensive and comprehensive collection of lectures by world-leading experts in the field introduces and reviews all relevant computer simulation methods and their applications in condensed matter systems. Volume 2 offers surveys on numerical experiments carried out for a great number of systems, ranging from materials sciences to chemical biology, including supercooled liquids, spin glasses, colloids, polymers, liquid crystals, biological membranes and folding proteins.

Computer Simulations in Science and Engineering: Concepts - Practices - Perspectives (The Frontiers Collection)

by Juan Manuel Durán

This book addresses key conceptual issues relating to the modern scientific and engineering use of computer simulations. It analyses a broad set of questions, from the nature of computer simulations to their epistemological power, including the many scientific, social and ethics implications of using computer simulations. The book is written in an easily accessible narrative, one that weaves together philosophical questions and scientific technicalities. It will thus appeal equally to all academic scientists, engineers, and researchers in industry interested in questions (and conceivable answers) related to the general practice of computer simulations.

Computer Simulations of Liquid Crystals and Polymers: Proceedings of the NATO Advanced Research Workshop on Computational Methods for Polymers and Liquid Crystalline Polymers, Erice, Italy. 16-22 July 2003 (Nato Science Series II: #177)

by Paolo Pasini Slobodan 381 Umer Claudio Zannoni

Liquid crystals, polymers and polymer liquid crystals are soft condensed matter systems of major technological and scientific interest. An understanding of the macroscopic properties of these complex systems and of their many and interesting peculiarities at the molecular level can nowadays only be attained using computer simulations and statistical mechanical theories. Both in the Liquid Crystal and Polymer fields a considerable amount of simulation work has been done in the last few years with various classes of models at different special resolutions, ranging from atomistic to molecular and coarse-grained lattice models. Each of the two fields has developed its own set of tools and specialized procedures and the book aims to provide a state of the art review of the computer simulation studies of polymers and liquid crystals. This is of great importance in view of a potential cross-fertilization between these connected areas which is particularly apparent for a number of experimental systems like, e.g. polymer liquid crystals and anisotropic gels where the different fields necessarily merge. An effort has been made to assess the possibilities of a coherent description of the themes that have developed independently, and to compare and extend the theoretical and computational techniques put forward in the different areas.

Computer Simulations of Surfaces and Interfaces (NATO Science Series II: Mathematics, Physics and Chemistry #114)

by Burkhard Dünweg David P. Landau Andrey I. Milchev

Studies of surfaces and interactions between dissimilar materials or phases are vital for modern technological applications. Computer simulation methods are indispensable in such studies and this book contains a substantial body of knowledge about simulation methods as well as the theoretical background for performing computer experiments and analyzing the data. The book is self-contained, covering a range of topics from classical statistical mechanics to a variety of simulation techniques, including molecular dynamics, Langevin dynamics and Monte Carlo methods. A number of physical systems are considered, including fluids, magnets, polymers, granular media, and driven diffusive systems. The computer simulation methods considered include both standard and accelerated versions. The simulation methods are clearly related to the fundamental principles of thermodynamics and statistical mechanics.

Computer Treatment of Large Air Pollution Models (Environmental Science and Technology Library #2)

by Zahari Zlatev

"Models are often the only way of interpreting measurements to in­ vestigate long-range transport, and this is the reason for the emphasis on them in many research programs". B. E. A. Fisher: "A review of the processes and models of long-range transport of air pollutants", Atmospheric Environment, 17(1983), p. 1865. Mathematical models are (potentially, at least) powerful means in the efforts to study transboundary transport of air pollutants, source-receptor relationships and efficient ways of reducing the air pollution to acceptable levels. A mathematical model is a complicated matter, the development of which is based on the use of (i) various mechanisms describing mathematically the physical and chemical properties of the studied phenomena, (ii) different mathematical tools (first and foremost, partial differenti­ al equations), (iii) various numerical methods, (iv) computers (especially, high-speed computers), (v) statistical approaches, (vi) fast and efficient visualization and animation techniques, (vii) fast methods for manipulation with huge sets of data (input data, intermediate data and output data).

Computerized Modeling of Sedimentary Systems

by Professor Dr. Jan Harff Dr Wolfram Lemke Professor Dr. Karl Stattegger

Computerized modeling is a powerful tool to describe the complex interrelations between measured data and the dynamics of sedimentary systems. Complex interaction of environmental factors with natural variations and increasing anthropogenic intervention is reflected in the sedimentary record at varying scales. The understanding of these processes gives way to the reconstruction of the past and is a key to the prediction of future trends. Especially in cases where observations are limited and/or expensive, computer simulations may substitute for the lack of data. State-of-the-art research work requires a thorough knowledge of processes at the interfaces between atmosphere, hydrosphere, biosphere, and lithosphere, and is therefore an interdisciplinary approach.

Computerkartographie: Eine Einführung in das Desktop Mapping am PC

by Gerold Olbrich Michael Quick Jürgen Schweikart

Die Darstellung raumbezogener Daten in Kartenform hat dank der rasanten Entwicklung entsprechender Software stark zugenommen. Immer häufiger bedienen sich heute auch Praktiker und Wissenschaftler, die im Zuge ihrer Ausbildung keine Erfahrung auf dem Gebiet der thematischen Kartographie sammeln konnten, dieser Form der Visualisierung. Ziel dieses Titels ist es daher, dem Leser zunächst unverzichtbares Basiswissen aus dem Bereich der thematischen Kartographie zu vermitteln, um darauf aufbauend die Methodik der angewandten Computerkartographie zu erläutern. Darüber hinaus wird ein Überblick über die Leistungsmerkmale gängiger Software gegeben. Die beiliegende CD-ROM enthält Demoversionen zu den verschiedenen Programmen. Ein Quellenverzeichnis im Anhang führt Bezugsadressen für Koordinatendaten und Software auf.

Computerkartographie: Eine Einführung in das Desktop Mapping am PC

by Gerold Olbrich Michael Quick Jürgen Schweikart

Endlich gibt es ein deutschsprachiges Buch, das umfassend die Theorie und Praxis der Computerkartographie darstellt. Es ist verständlich geschrieben, enthält zahlreiche Abbildungen und Beispiele und führt die Leistungsmerkmale gängiger PC-Programme sowie die Bezugsadressen für Koordinatendaten und Software auf.

Computerphysik: Einführung, Beispiele und Anwendungen

by Stefan Gerlach

Dieses Lehrbuch bietet dem Leser eine aktuelle Einführung in das Lösen von physikalischen Problemen mit dem Computer. Die Grundlagen der Computernutzung, der Programmierung sowie der wichtigsten numerischen Methoden werden besprochen und anhand vieler Beispiele und Übungsaufgaben mit zunehmendem Bezug zur Physik verdeutlicht. Die Nutzung des Betriebssystems Linux und die Programmierung in C und Python bilden dabei die Schwerpunkte.Der wichtigste Teil des Buches umfasst die Projekte, in denen die zuvor besprochenen Grundlagen auf unterschiedliche Probleme der Physik angewendet werden. Die Projekte beinhalten viele wichtige Beispiele aus der Computerphysik (u.a. den Oszillator und Anfangswertprobleme) und diskutieren deren Anwendungen im Detail. Der Leser erhält damit das nötige Rüstzeug, um selbstständig physikalische Probleme mithilfe des Computers zu lösen. Zahlreiche Übungsaufgaben unterstützen beim Vertiefen des Erlernten.Neben einer Vielzahl an kleinen Ergänzungen und Verbesserungen ist die zweite Auflage um ein zusätzliches Projektkapitel zum Thema Daten- und Signalanalyse erweitert, wobei wichtige Themen wie statistische Methoden, Filtermethoden und Bildanalyse behandelt werden.Dieses Buch ist in erster Linie für Bachelorstudenten der Physik, aber auch anderer naturwissenschaftlicher Fächer gedacht. Es kann aber auch von Lehrern und Dozenten zur eigenen Vorbereitung genutzt werden. Vorkenntnisse auf dem Gebiet setzt dieses Buch nicht voraus. Nur in den Projekten wird auf Wissen aus den Grundvorlesungen der Physik zurückgegriffen.

Computerphysik: Einführung, Beispiele und Anwendungen

by Stefan Gerlach

Dieses Lehrbuch bietet dem Leser eine aktuelle Einführung in das Lösen von physikalischen Problemen mit dem Computer. Es werden die Grundlagen der Computernutzung, der Programmierung sowie der wichtigsten numerischen Methoden besprochen und anhand vieler Beispiele und Übungsaufgaben mit zunehmendem Bezug zur Physik verdeutlicht. Die Nutzung des Betriebssystems Linux und die Programmierung in C und Python bilden dabei den Schwerpunkt. Der wichtigste Teil des Buches sind die Projekte, in denen die zuvor besprochenen Grundlagen auf unterschiedliche Probleme der Physik angewendet werden. Die Projekte umfassen viele wichtige Beispiele aus der Computerphysik (u.a. den Oszillator und Anfangswertprobleme) und diskutieren deren Anwendungen im Detail. Der Leser erhält damit das nötige Rüstzeug, um selbstständig physikalische Probleme mit Hilfe des Computers zu lösen. Zahlreiche Übungsaufgaben helfen dabei.

Computers in Geology: 25 Years of Progress (International Association for Mathematical Geology Studies in Mathematical Geology)

by John C. Davis Ute Christina Herzfeld

This volume vividly demonstrates the importance and increasing breadth of quantitative methods in the earth sciences. With contributions from an international cast of leading practitioners, chapters cover a wide range of state-of-the-art methods and applications, including computer modeling and mapping techniques. Many chapters also contain reviews and extensive bibliographies which serve to make this an invaluable introduction to the entire field. In addition to its detailed presentations, the book includes chapters on the history of geomathematics and on R.G.V. Eigen, the "father" of mathematical geology. Written to commemorate the 25th anniversary of the International Association for Mathematical Geology, the book will be sought after by both practitioners and researchers in all branches of geology.

Computing Qualitatively Correct Approximations of Balance Laws: Exponential-Fit, Well-Balanced and Asymptotic-Preserving (SEMA SIMAI Springer Series #2)

by Laurent Gosse

Substantial effort has been drawn for years onto the development of (possibly high-order) numerical techniques for the scalar homogeneous conservation law, an equation which is strongly dissipative in L1 thanks to shock wave formation. Such a dissipation property is generally lost when considering hyperbolic systems of conservation laws, or simply inhomogeneous scalar balance laws involving accretive or space-dependent source terms, because of complex wave interactions. An overall weaker dissipation can reveal intrinsic numerical weaknesses through specific nonlinear mechanisms: Hugoniot curves being deformed by local averaging steps in Godunov-type schemes, low-order errors propagating along expanding characteristics after having hit a discontinuity, exponential amplification of truncation errors in the presence of accretive source terms... This book aims at presenting rigorous derivations of different, sometimes called well-balanced, numerical schemes which succeed in reconciling high accuracy with a stronger robustness even in the aforementioned accretive contexts. It is divided into two parts: one dealing with hyperbolic systems of balance laws, such as arising from quasi-one dimensional nozzle flow computations, multiphase WKB approximation of linear Schrödinger equations, or gravitational Navier-Stokes systems. Stability results for viscosity solutions of onedimensional balance laws are sketched. The other being entirely devoted to the treatment of weakly nonlinear kinetic equations in the discrete ordinate approximation, such as the ones of radiative transfer, chemotaxis dynamics, semiconductor conduction, spray dynamics or linearized Boltzmann models. “Caseology” is one of the main techniques used in these derivations. Lagrangian techniques for filtration equations are evoked too. Two-dimensional methods are studied in the context of non-degenerate semiconductor models.

Computing the Environment: Digital Design Tools for Simulation and Visualisation of Sustainable Architecture (AD Smart)

by Brady Peters Terri Peters

Computing the Environment presents practical workflows and guidance for designers to get feedback on their design using digital design tools on environmental performance. Starting with an extensive state-of-the-art survey of what top international offices are currently using in their design projects, this book presents detailed descriptions of the tools, algorithms, and workflows used and discusses the theories that underlie these methods. Project examples from Transsolar Klimaengineering, Buro Happold´s SMART Group, Behnish Behnisch Architects, Thomas Herzog, Autodesk Research are contextualized with quotes and references to key thinkers in this field such as Eric Winsberg, Andrew Marsh, Michelle Addington and Ali Malkawi.

Computing the Environment: Digital Design Tools for Simulation and Visualisation of Sustainable Architecture (AD Smart)

by Brady Peters Terri Peters

Computing the Environment presents practical workflows and guidance for designers to get feedback on their design using digital design tools on environmental performance. Starting with an extensive state-of-the-art survey of what top international offices are currently using in their design projects, this book presents detailed descriptions of the tools, algorithms, and workflows used and discusses the theories that underlie these methods. Project examples from Transsolar Klimaengineering, Buro Happold´s SMART Group, Behnish Behnisch Architects, Thomas Herzog, Autodesk Research are contextualized with quotes and references to key thinkers in this field such as Eric Winsberg, Andrew Marsh, Michelle Addington and Ali Malkawi.

Computing the Optical Properties of Large Systems (Springer Theses)

by Tim Joachim Zuehlsdorff

This work addresses the computation of excited-state properties of systems containing thousands of atoms. To achieve this, the author combines the linear response formulation of time-dependent density functional theory (TDDFT) with linear-scaling techniques known from ground-state density-functional theory. This extends the range of TDDFT, which on its own cannot tackle many of the large and interesting systems in materials science and computational biology. The strengths of the approach developed in this work are demonstrated on a number of problems involving large-scale systems, including exciton coupling in the Fenna-Matthews-Olson complex and the investigation of low-lying excitations in doped p-terphenyl organic crystals.

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