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  The treatment of electronic excitations in atomistic models of radiation damage in metals
Posted on 2014-09-02 (Send to a Friend Send to a Friend )
Atomistic simulations are a primary means of understanding the damage done to metallic materials by high energy particulate radiation. In many situations the electrons in a target material are known to exert a strong influence on the rate and type of damage. The dynamic exchange of energy between electrons and ions can act to damp the ionic motion, to inhibit the production of defects or to quench in damage, depending on the situation. Finding ways to incorporate these electronic effects into atomistic simulations of radiation damage is a . . . .
  Molecular dynamics sim ulations of energy dep osition in solids
Posted on 2014-08-31 (Send to a Friend Send to a Friend )
Molecular dynamics simulations have been used since the early 60's to study the interaction of energetic particles (up to 100's of keVs) with solids for a large variety of applications. In this article we briefely describe the molecular dynamics methodology for the particular case of atomic collisions in solids. As examples of systems and processes that can be studied using this technique we present three results, related to relevant industrial applications. First we describe how molecular dynamics can be used to st . . . .
  Density Functional Theory Models for Radiation Damage
Posted on 2014-08-30 (Send to a Friend Send to a Friend )
Density functional theory models developed over the past decade provide unique information about the structure of nanoscale defects produced by irradiation and about the nature of short-range interaction between radia- tion defects, clustering of defects, and their migration pathways. These ab initio models, involving no experimental input parameters, appear to be as quantitatively accurate and informative as the most advanced experimental techniques developed for the observation of radiation damage phenomena. Density functional theory m . . . .
  An introduction to econophysics: correlations and complexity in finance
Posted on 2014-08-29 (Send to a Friend Send to a Friend )
An introduction to econophysics: correlations and complexity in finance This book concerns the use of concepts from statist ical physics in the description of financial systems. Specifically, the authors ill ustrate the scaling concepts used in probability theory, in critical phenomena, and in f ully developed turbulent fluids. These concepts are then applied to financial time s eries to gain new insights into the behavior of financial markets. The authors also pre sent a new stochastic model that displays several of the statistical properties obse rved in empirical data. . . . .
  A guided walk down Wall Street: an introduction to econophysics
Posted on 2014-08-28 (Send to a Friend Send to a Friend )
This article contains the lecture notes for the short course "Introduction to Econophysics," delivered at the II Brazilian School on Statistical Mechanics, held in São Carlos, Brazil, in February 2004. The main goal of the present notes is twofold: i) to provide a brief introduction to the problem of pricing financial derivatives in continuous time; and ii) to review some of the related problems to which physicists have made relevant contributions in recent years. . . . .
  Internet Protocol Analysis
Posted on 2014-08-22 (Send to a Friend Send to a Friend )
Internet Protocol Analysis Contents: Introduction; Packet Analyzers; Link Layer; Address Resolution Protocol; Internet Layer / IPv4; Subnetting; IPv6; Internet Control Message Protocol; Transport Layer; Address Assignment; Name Resolution; Application Layer; Routing; Network Monitoring. . . . .

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