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v. : 24 cm

Procedures and methods for veri.cation of coding algebra and for validations of models and calculations used in the aerospace computational fluid dynamics (CFD) community would be ef.cacious if used by the glacier dynamics modeling community. This paper presents some of those methods, and how they might be applied to uncertainty management supporting code veri.cation and model validation for glacier dynamics. The similarities and differences between their use in CFD analysis and the proposed application of these methods to glacier modeling are discussed. After establishing sources of uncertainty and methods for code veri.cation, the paper looks at a representative sampling of veri.cation and validation efforts that are underway in the glacier modeling community, and establishes a context for these within an overall solution quality assessment. Finally, a vision of a new information architecture and interactive scienti.c interface is introduced and advocated.

v. : 24 cm

v. : 24 cm

The author, as part of an internship under the Joint Educational Opportunities for Minorities (JEOM) Program at Naval Air Warfare Center Weapons Division (NAWCWD), China Lake, California, has devised models and methods for the solution of certain frequently recurring problems in electrical engineering. Starting with fundamental equations relating to line charges, the author utilizes the well-known method of moments to model single strip charges, multiple strip charges in various geometrical configurations, and a charged square cylinder excited by an incidental plane wave. Finally, the author considers the problem of calculating the current along a thin-wire antenna.

The author, as part of an internship under the Joint Educational Opportunities for Minorities (JEOM) Program at Naval Air Warfare Center Weapons Division (NAWCWD), China Lake, California, has devised models and methods for the solution of certain frequently recurring problems in electrical engineering. Starting with fundamental equations relating to line charges, the author utilizes the well-known method of moments to model single strip charges, multiple strip charges in various geometrical configurations, and a charged square cylinder excited by an incidental plane wave. Finally, the author considers the problem of calculating the current along a thin-wire antenna.

One of the breakthroughs in condensed matter physics is the newly acquired ability of theorists to explain and predict properties of solids using quantum theory. Starting with minimal information about the constituent atoms, accurate calculations of electronic, structural, vibrational, and even superconducting properties of solids have been performed. The discussion will provide an overview of this area with emphasis on the predictive capacity of the approach. Applications include the analysis of high pressure structures of solids such as group IV and III-IV semiconductors, metallic hydrogen, and compounds having very low compressibilities. A pseudopotential approach is used in most of the above applications. In some cases empirical theories and scaling laws are employed as a guide to facilitate the investigation of trends in material properties. Specific compounds are suggested as candidates for superhard materials and new superconductors. Keywords: Military publications; Periodicals; Scientific literature; Reports; Europe; Translations.

One of the breakthroughs in condensed matter physics is the newly acquired ability of theorists to explain and predict properties of solids using quantum theory. Starting with minimal information about the constituent atoms, accurate calculations of electronic, structural, vibrational, and even superconducting properties of solids have been performed. The discussion will provide an overview of this area with emphasis on the predictive capacity of the approach. Applications include the analysis of high pressure structures of solids such as group IV and III-IV semiconductors, metallic hydrogen, and compounds having very low compressibilities. A pseudopotential approach is used in most of the above applications. In some cases empirical theories and scaling laws are employed as a guide to facilitate the investigation of trends in material properties. Specific compounds are suggested as candidates for superhard materials and new superconductors. Keywords: Military publications; Periodicals; Scientific literature; Reports; Europe; Translations.

One of the breakthroughs in condensed matter physics is the newly acquired ability of theorists to explain and predict properties of solids using quantum theory. Starting with minimal information about the constituent atoms, accurate calculations of electronic, structural, vibrational, and even superconducting properties of solids have been performed. The discussion will provide an overview of this area with emphasis on the predictive capacity of the approach. Applications include the analysis of high pressure structures of solids such as group IV and III-IV semiconductors, metallic hydrogen, and compounds having very low compressibilities. A pseudopotential approach is used in most of the above applications. In some cases empirical theories and scaling laws are employed as a guide to facilitate the investigation of trends in material properties. Specific compounds are suggested as candidates for superhard materials and new superconductors. Keywords: Military publications; Periodicals; Scientific literature; Reports; Europe; Translations.

v. : 24 cm

v. : 24 cm

v. : 24 cm

v. : 24 cm

v. : 24 cm

v. : 24 cm

v. : 24 cm

Under sponsorship from various Department of Defense (DoD) organizations and a cooperative Research and Development Agreement (CRADA) with the U.S. Research Development and Engineering Command, Army Research Laboratory (RDECOM-ARL) HyPerComp has significantly advanced the state of the art of time-domain, and broad band electromagnetic simulations. The TEMPUS (Time-Domain ElectroMagnetic Parallel Unstructured Simulator) environment is a complete self contained code suite that includes computer aided design (CAD) geometry creation and repair unstructured gridding for fell-scale targets with general materials scalable parallel code architecture higher-order accurate discontinuous Galerkin solvers for Maxwell's equations and post processing utilities for solution visualization and exaction of final results like bistatic and monostatic radar cross section (RCS) synthetic aperture radar (SAR) images and high-range-resolution (HRR) profiles. The high-performance TEMPUS environment is well suited for modeling a variety of targets and electromagnetic problems of interest to the U.S. Army such as: 1) high- speed projectiles with subtle surface discontinuities ridges and/or fins 2) ground-based targets such as tanks and scud missile launchers and 3) foliage penetration and ground interaction for target under trees (TUT). Some of the physics-based phenomenological features that govern the electromagnetic response of general targets are: a) specular reflection b) creeping waves c) traveling waves) slow moving surface waves e) edge diffraction f) singular currents at surface discontinuities g) resonating gaps and cavities and h) general material response.

Under sponsorship from various Department of Defense (DoD) organizations and a cooperative Research and Development Agreement (CRADA) with the U.S. Research Development and Engineering Command, Army Research Laboratory (RDECOM-ARL) HyPerComp has significantly advanced the state of the art of time-domain, and broad band electromagnetic simulations. The TEMPUS (Time-Domain ElectroMagnetic Parallel Unstructured Simulator) environment is a complete self contained code suite that includes computer aided design (CAD) geometry creation and repair unstructured gridding for fell-scale targets with general materials scalable parallel code architecture higher-order accurate discontinuous Galerkin solvers for Maxwell's equations and post processing utilities for solution visualization and exaction of final results like bistatic and monostatic radar cross section (RCS) synthetic aperture radar (SAR) images and high-range-resolution (HRR) profiles. The high-performance TEMPUS environment is well suited for modeling a variety of targets and electromagnetic problems of interest to the U.S. Army such as: 1) high- speed projectiles with subtle surface discontinuities ridges and/or fins 2) ground-based targets such as tanks and scud missile launchers and 3) foliage penetration and ground interaction for target under trees (TUT). Some of the physics-based phenomenological features that govern the electromagnetic response of general targets are: a) specular reflection b) creeping waves c) traveling waves) slow moving surface waves e) edge diffraction f) singular currents at surface discontinuities g) resonating gaps and cavities and h) general material response.

Under sponsorship from various Department of Defense (DoD) organizations and a cooperative Research and Development Agreement (CRADA) with the U.S. Research Development and Engineering Command, Army Research Laboratory (RDECOM-ARL) HyPerComp has significantly advanced the state of the art of time-domain, and broad band electromagnetic simulations. The TEMPUS (Time-Domain ElectroMagnetic Parallel Unstructured Simulator) environment is a complete self contained code suite that includes computer aided design (CAD) geometry creation and repair unstructured gridding for fell-scale targets with general materials scalable parallel code architecture higher-order accurate discontinuous Galerkin solvers for Maxwell's equations and post processing utilities for solution visualization and exaction of final results like bistatic and monostatic radar cross section (RCS) synthetic aperture radar (SAR) images and high-range-resolution (HRR) profiles. The high-performance TEMPUS environment is well suited for modeling a variety of targets and electromagnetic problems of interest to the U.S. Army such as: 1) high- speed projectiles with subtle surface discontinuities ridges and/or fins 2) ground-based targets such as tanks and scud missile launchers and 3) foliage penetration and ground interaction for target under trees (TUT). Some of the physics-based phenomenological features that govern the electromagnetic response of general targets are: a) specular reflection b) creeping waves c) traveling waves) slow moving surface waves e) edge diffraction f) singular currents at surface discontinuities g) resonating gaps and cavities and h) general material response.

Under sponsorship from various Department of Defense (DoD) organizations and a cooperative Research and Development Agreement (CRADA) with the U.S. Research Development and Engineering Command, Army Research Laboratory (RDECOM-ARL) HyPerComp has significantly advanced the state of the art of time-domain, and broad band electromagnetic simulations. The TEMPUS (Time-Domain ElectroMagnetic Parallel Unstructured Simulator) environment is a complete self contained code suite that includes computer aided design (CAD) geometry creation and repair unstructured gridding for fell-scale targets with general materials scalable parallel code architecture higher-order accurate discontinuous Galerkin solvers for Maxwell's equations and post processing utilities for solution visualization and exaction of final results like bistatic and monostatic radar cross section (RCS) synthetic aperture radar (SAR) images and high-range-resolution (HRR) profiles. The high-performance TEMPUS environment is well suited for modeling a variety of targets and electromagnetic problems of interest to the U.S. Army such as: 1) high- speed projectiles with subtle surface discontinuities ridges and/or fins 2) ground-based targets such as tanks and scud missile launchers and 3) foliage penetration and ground interaction for target under trees (TUT). Some of the physics-based phenomenological features that govern the electromagnetic response of general targets are: a) specular reflection b) creeping waves c) traveling waves) slow moving surface waves e) edge diffraction f) singular currents at surface discontinuities g) resonating gaps and cavities and h) general material response.

v. : 24 cm

v. : 24 cm