When fractures in otherwise hard rocks are filled with fluids (oil, gas, water, CO{sub 2}), the type and physical state of the fluid (liquid or gas) can make a large difference in the wave speeds and attenuation properties of seismic waves. The present work summarizes methods of deconstructing theses effects of fractures, together with any fluids contained within them, on wave propagation as observed in reflection seismic data. Additional studies of waves in fluid-saturated granular media show that the behavior can be quite different from that for fractured media, since these materials are typically much softer mechanically than are the fractured rocks (i.e., having a very small drained moduli). Important fluid effects in such media are often governed as much by fluid viscosity as by fluid bulk modulus.

Interview with jazz pianist Johnny Case. In the interview, Case talks about his family's acquaintance with Ernest Tubb, his early interest in rhythm and blues, how his parents, Elvis Presley, and local radio stations influenced his musical career, learning to play the piano and his interest in jazz, early gigs in Oklahoma and northeast Texas, his family's move from Paris, Texas to Dallas and his playing gigs at several clubs there, moving to Fort Worth, his collaboration with Tom Morrell in producing the 'How the West Was Swung' albums, his comments about the demise of western swings, gigs and clubs in Fort Worth, his transition from playing western swing to jazz, various jazz artists, okaying for African-American audiences, avant-garde jazz and its promoters, difficulties in making a full-time living as a jazz artist in Fort Worth, his employment at Sardine's Italian Restaurant in Fort Worth, the Caravan of Dreams and the resurgence of jazz in Fort Worth, his relationship with the local musicians union, Texas jazz, and the evolution of jazz in Fort Worth. The interview includes an appendix with an article, Case's discography, and Case's notes on various jazz musicians and venues.

Interview with jazz musician Robert "Bob" Stewart. In the interview, Steward speaks about his early interest in music, his first drum set, first professional job with the Shorty Clements Band, attending college, his employment as a disk jockey, his definition of jazz, playing with the Charles Scott Band in fort Worth, after-hours clubs in Fort Worth, jazz's role in bringing together black and white musicians, various jazz clubs and venues in Fort Worth, musicians unions, the lack of full-time employment opportunities for jazz musicians in Fort Worth, the Fort Worth jazz scene, and peculiarities of Texas jazz and the "Texas Sound." The interview includes an appendix with photographs.

The U.S. Department of Energy is pursuing an aggressive goal to cut the cost of solar water-heating systems in half. Replacing metal and glass components with less expensive plastic ones is a key strategy for that goal. This is a short (2-page) fact sheet about new technologies for solar water heaters.

In this article we provide a detailed description of a technique to obtain a simple parameterization for different exceptional Lie groups, such as G{sub 2}, F{sub 4} and E{sub 6}, based on their fibration structure. For the compact case, we construct a realization which is a generalization of the Euler angles for SU(2), while for the non compact version of G{sub 2(2)}/SO(4) we compute the Iwasawa decomposition. This allows us to obtain not only an explicit expression for the Haar measure on the group manifold, but also for the cosets G{sub 2}/SO(4), G{sub 2}/SU(3), F{sub 4}/Spin(9), E{sub 6}/F{sub 4} and G{sub 2(2)}/SO(4) that we used to find the concrete realization of the general element of the group. Moreover, as a by-product, in the simplest case of G{sub 2}/SO(4), we have been able to compute an Einstein metric and the vielbein. The relevance of these results in physics is discussed.

This brochure presents the capabilities that the Measurements and Characterization Division has in Analytical Microscopy, in which a variety of sophisticated techniques are used to study a material's topographical, crystallographic, structural, chemical, and luminescence properties.

This brochure presents the capabilities that the Measurements and Characterization Division has for transferring secure characterization data to clients over the Web, and for collaborating in R and D via the Web over distances (i.e., working as a virtual lab).

This brochure presents the capabilities that the Measurements and Characterization Division has in device performance, in which a variety of spectral responsivity and current-versus-voltage techniques are used to measure the spectral dependence of PV cells and module conversion efficiencies, and to measure the output performance of cells and modules under simulated and natural light.

This brochure presents the capabilities that the Measurements and Characterization Division has in Electro-Optical Characterization, in which a variety of spectroscopy, ellipsometry, and capacitance techniques are used to probe the fundamental electrical and optical properties of solid-state materials.

This brochure presents the capabilities that the Measurements and Characterization Division has in Surface Analysis, in which a variety of spectrometry and spectroscopy techniques are used to determine the chemical, elemental, and molecular composition of material surfaces and interfaces.

This document introduces the Planning Tool for Trusted Electronic Repositories (PLATTER) toolkit which assists repositories in setting the necessary objectives and targets for achieving trustworthiness. PLATTER is not in itself an audit or certification tool but is rather designed to complement existing audit and certification tools by providing a framework which will allow new repositories to incorporate the goal of achieving trust into their planning from an early stage. A repository planned using PLATTER will find itself in a strong position when it subsequently comes to apply one of the existing auditing tools to confirm the adequacy of its procedures for maintaining the long term usability of and access to its material.

Interview with truck driver Robert Cassel. The interview includes Cassel's personal experiences about being employed by the Civilian Conservation Corps during the Great Depression.

Interview with janitor Hubert Chandler. The interview includes Chandler's personal experiences about his employment by the Civilian Conservation Corps during the Great Depression.

Interview with Norbert N. Gebhard. The interview includes Gebhard's personal experiences about employment by the Civilian Conservation Corps during the Great Depression.

An account of the successful use of alternative fuels in a fleet of SuperShuttle passenger vans, which offer shared-rides between Boulder and Denver International Airport.

Book created by the Head family of Johnson County, Texas to document family stories and memories. A note inside indicates some names have been changed as are indicated by *. Head Grocery opened in 1926 and closed in 1970.

McStain Enterprises' new cottage-style homes built under the U.S. Department of Energy's Building America program are designed to greatly reduce energy costs and improve indoor air quality for their customers in Longmont, Colorado. In addition, energy-efficient features in the homes provide owners with greater durability and value, allow some buyers to qualify for special energy-efficient mortgages, and can result in higher resale values. Features include improved building envelope and air distribution systems, high-efficiency heating and cooling systems, improved indoor air quality, and Green Builder concepts from Colorado's Green Builder Program.

As 3D volumetric images of the human body become an increasingly crucial source of information for the diagnosis and treatment of a broad variety of medical conditions, advanced techniques that allow clinicians to efficiently and clearly visualize volumetric images become increasingly important. Interaction has proven to be a key concept in analysis of medical images because static images of 3D data are prone to artifacts and misunderstanding of depth. Furthermore, fading out clinically irrelevant aspects of the image while preserving contextual anatomical landmarks helps medical doctors to focus on important parts of the images without becoming disoriented. Our goal was to develop a tool that unifies interactive manipulation and context preserving visualization of medical images with a special focus on diffusion tensor imaging (DTI) data. At each image voxel, DTI provides a 3 x 3 tensor whose entries represent the 3D statistical properties of water diffusion locally. Water motion that is preferential to specific spatial directions suggests structural organization of the underlying biological tissue; in particular, in the human brain, the naturally occuring diffusion of water in the axon portion of neurons is predominantly anisotropic along the longitudinal direction of the elongated, fiber-like axons [MMM+02]. This property has made DTI …

On February 1, 1861, delegates at the Texas Secession Convention elected to leave the Union. The people of Texas supported the actions of the convention in a statewide referendum, paving the way for the state to secede and to officially become the seventh state in the Confederacy. Soon the Texans found themselves engaged in a bloody and prolonged civil war against their northern brethren. During the course of this war, the lives of thousands of Texans, both young and old, were changed forever. This new anthology, edited by Kenneth W. Howell, incorporates the latest scholarly research on how Texans experienced the war. Eighteen contributors take us from the battlefront to the home front, ranging from inside the walls of a Confederate prison to inside the homes of women and children left to fend for themselves while their husbands and fathers were away on distant battlefields, and from the halls of the governor’s mansion to the halls of the county commissioner’s court in Colorado County. Also explored are well-known battles that took place in or near Texas, such as the Battle of Galveston, the Battle of Nueces, the Battle of Sabine Pass, and the Red River Campaign. Finally, the social and …

Interview with Thomas W. Nance, a Texas National Guard WWII veteran from Dallas, Texas, who served with the 112th Cavalry in the Pacific. Nance discusses growing up and joining the 112th, working with horses, equipment used and organization, maneuvers at Fort Bliss, deployment to New Caledonia, operations on Woodlark Island, staging at Goodenough Island and the landing at Arawe, being wounded and evacuated, recovery and discharge, continued disability and experiences with VA hospitals, and reflections on the 112th as a unit. In appendix is the poem "Fiddler's Green," a list of places Nance served, descriptions of military equipment mentioned, and the 112th's service chronicle.

Single-crystal neutron diffraction measures the elastic Bragg reflection intensities from crystals of a material, the structure of which is the subject of investigation. A single crystal is placed in a beam of neutrons produced at a nuclear reactor or at a proton accelerator-based spallation source. Single-crystal diffraction measurements are commonly made at thermal neutron beam energies, which correspond to neutron wavelengths in the neighborhood of 1 Angstrom. For high-resolution studies requiring shorter wavelengths (ca. 0.3-0.8 Angstroms), a pulsed spallation source or a high-temperature moderator (a ''hot source'') at a reactor may be used. When complex structures with large unit-cell repeats are under investigation, as is the case in structural biology, a cryogenic-temperature moderator (a ''cold source'') may be employed to obtain longer neutron wavelengths (ca. 4-10 Angstroms). A single-crystal neutron diffraction analysis will determine the crystal structure of the material, typically including its unit cell and space group, the positions of the atomic nuclei and their mean-square displacements, and relevant site occupancies. Because the neutron possesses a magnetic moment, the magnetic structure of the material can be determined as well, from the magnetic contribution to the Bragg intensities. This latter aspect falls beyond the scope of the present unit; for …

Single-crystal neutron diffraction measures the elastic Bragg reflection intensities from crystals of a material, the structure of which is the subject of investigation. A single crystal is placed in a beam of neutrons produced at a nuclear reactor or at a proton accelerator-based spallation source. Single-crystal diffraction measurements are commonly made at thermal neutron beam energies, which correspond to neutron wavelengths in the neighborhood of 1 Angstrom. For high-resolution studies requiring shorter wavelengths (ca. 0.3-0.8 Angstroms), a pulsed spallation source or a high-temperature moderator (a ''hot source'') at a reactor may be used. When complex structures with large unit-cell repeats are under investigation, as is the case in structural biology, a cryogenic-temperature moderator (a ''cold source'') may be employed to obtain longer neutron wavelengths (ca. 4-10 Angstroms). A single-crystal neutron diffraction analysis will determine the crystal structure of the material, typically including its unit cell and space group, the positions of the atomic nuclei and their mean-square displacements, and relevant site occupancies. Because the neutron possesses a magnetic moment, the magnetic structure of the material can be determined as well, from the magnetic contribution to the Bragg intensities. This latter aspect falls beyond the scope of the present unit; for …

Catalog of courses offered by the Lamar Institute of Technology for the year 2000-2001, as well as general information about the university, programs, and policies, along with an admissions form.

Catalog of courses offered by the Lamar Institute of Technology for the year 2001-2002, as well as general information about the university, programs, and policies, along with an admissions form.