Frontiers Of Physics 1998 Proceedings Of The Intl Mtg

Contents:Progress of RFQ and Superconducting Accelerators in China (C E Chen et al.)QCD Phase Transition in the Laboratory and in the Early Universe (B Sinha)Frontiers in Ultrafast Laser Science (W Sibbett)Asymmetries of Sea Quark Distributions in Baryons (M Alberg et al.)A Variational Approach to Many-Particle Systems (C K Kim et al.)Synchrotron Radiation Activities at KEK (M Kihara)Results of the UNU/ICTP PFF Network (S Lee)New Generation Positron-Atom Scattering Theories (K Ratnavelu)Superconducting Pairing of Quarks in QCD (N V Hieu & L T Tuong)Photon-Gated Persistent Spectral Hole Burning (Y X Nie & L Z Zhao)Wind Driven Circulation of the South China Sea (A Camerlengo)Effect of Soil Type on Environmental Terrestrial Gamma Radiation Dose in Johor State, Malaysia (A T Ramli et al.)Research in Optical Fibres Devices at Telekom Malaysia Photonics Laboratory (H B Ahmad et al.)Simplifying Complexity (W A T Wan Abdullah)Gravitational Wave Detection in the Laboratory (Y T Chen et al.)and other papers Readership: Theoretical physicists.

Progress of RFQ and Superconducting Accelerators in China (C E Chen et al.) -- QCD Phase Transition in the Laboratory and in the Early Universe (B Sinha) -- Frontiers in Ultrafast Laser Science (W Sibbett)-- Asymmetries of Sea Quark Distributions in Baryons (M Alberg et al.) --A Variational Approach to Many-Particle Systems (C K Kim et al.) -- Synchrotron Radiation Activities at KEK (M Kihara)-- Results of the UNU/ICTP PFF Network (S Lee)-- New Generation Positron-Atom Scattering Theories (K Ratnavelu)-- Superconducting Pairing of Quarks in QCD (N V Hieu & L T Tuong)-- Photon-Gated Persistent Spectral Hole Burning (Y X Nie & L Z Zhao)-- Wind Driven Circulation of the South China Sea (A Camerlengo)-- Effect of Soil Type on Environmental Terrestrial Gamma Radiation Dose in Johor State, Malaysia (A T Ramli et al.) -- Research in Optical Fibres Devices at Telekom Malaysia Photonics Laboratory (H B Ahmad et al.) -- Simplifying Complexity (W A T Wan Abdullah)-- Gravitational Wave Detection in the Laboratory (Y T Chen et al.)-- and other papers

This book examines the differences between an ideal and a real description of wave propagation, where ideal means an elastic (lossless), isotropic and single-phase medium, and real means an anelastic, anisotropic and multi-phase medium. The analysis starts by introducing the relevant stress-strain relation. This relation and the equations of momentum conservation are combined to give the equation of motion. The differential formulation is written in terms of memory variables, and Biot's theory is used to describe wave propagation in porous media. For each rheology, a plane-wave analysis is performed in order to understand the physics of wave propagation. The book contains a review of the main direct numerical methods for solving the equation of motion in the time and space domains. The emphasis is on geophysical applications for seismic exploration, but researchers in the fields of earthquake seismology, rock acoustics, and material science - including many branches of acoustics of fluids and solids - may also find this text useful.

This revision provides guidance to States and their competent authorities on how to establish or improve, implement, maintain and sustain the elements of the nuclear security regime related to radioactive material, associated facilities and activities, with particular emphasis on the development of regulatory requirements. The publication applies to the security of radioactive material in use or in storage, as well as associated facilities and associated activities, and assists Member States in their regimes against unauthorized removal of the radioactive material or sabotage performed with the intent to cause harmful radiological consequences.