Radiative corrections to the decay rate of n = 2 states of hydrogenic ions are calculated. The transitions considered are the M1 decay of the 2s state to the ground state and the E1(M2) decays of the 2p{sub 1/2} and 2p{sub 3/2} states to the ground state. The radiative corrections start in order {alpha}(Z{alpha}){sup 2}, but the method used sums all orders of Z{alpha}. The leading {alpha}(Z{alpha}){sup 2} correction for the E1 decays is calculated and compared with the exact result. The extension of the calculational method to parity nonconserving transitions in neutral atoms is discussed.

The increasing gap between processor and memory speeds is a well-known problem in modern computer architecture. The Imagine system is designed to address the processor-memory gap through streaming technology. Stream processors are best-suited for computationally intensive applications characterized by high data parallelism and producer-consumer locality with minimal data dependencies. This work examines an efficient streaming implementation of the computationally intensive Transitive Closure (TC) algorithm on the Imagine platform. We develop a tiled TC algorithm specifically for the Imagine environment, which efficiently reuses streams to minimize expensive off-chip data transfers. The implementation requires complex stream programming since the memory hierarchy and cluster organization of the underlying architecture are exposed to the Imagine programmer. Results demonstrate that limited performance of TC is achieved primarily due to the complicated data-dependencies of the blocked algorithm. This work is an ongoing effort to identify classes of scientific problems well-suited for streaming processors.

OAK-B135 Our research objectives are to determine, through an extensive set of laboratory experiments, the effect of the specific mineralogic form of iron and the effect of the distribution of iron on proton nuclear magnetic resonance (NMR) relaxation mechanisms. In the first nine months of this project, we have refined the experimental procedures to be used in the acquisition of the laboratory NMR data; have ordered, and conducted preliminary measurements on, the sand samples to be used in the experimental work; and have revised and completed the theoretical model to use in this project. Over the next year, our focus will be on completing the first phase of the experimental work where the form and distribution of the iron in the sands in varied.

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.

Funeral program for Esther Lee Ross, born January 26, 1948 and died November 5, 2003. The funeral was held Tuesday, November 11, 2003 at The West End Church of God In Christ, officiated by Elder Anthony White. Funeral arrangements were made through Lewis Funeral Home and she was buried in Meadowlawn Memorial Park in San Antonio, Texas.

Funeral program for Fred H. Smith, born December 3, 1917 and died November 6, 2003. The funeral was held November 11, 2003 at New Covenant Missionary Baptist Church, officiated by Dr. Paul D. Stevens, Sr. Funeral arrangements were made through the Lewis Funeral Home and he was buried in Southern Memorial Park in San Antonio, Texas.

The first experiments on the National Ignition Facility (NIF) have employed the first four beams to measure propagation and laser backscattering losses in large ignition-size plasmas. Gas-filled targets between 2 mm and 7 mm length have been heated from one side by overlapping the focal spots of the four beams from one quad operated at 351 nm (3{omega}) with a total intensity of 2 x 10{sup 15} W cm{sup -2}. The targets were filled with 1 atm of CO{sub 2} producing of up to 7 mm long homogeneously heated plasmas with densities of n{sub e} = 6 x 10{sup 20} cm{sup -3} and temperatures of T{sub e} = 2 keV. The high energy in a NIF quad of beams of 16kJ, illuminating the target from one direction, creates unique conditions for the study of laser plasma interactions at scale lengths not previously accessible. The propagation through the large-scale plasma was measured with a gated x-ray imager that was filtered for 3.5 keV x rays. These data indicate that the beams interact with the full length of this ignition-scale plasma during the last {approx}1 ns of the experiment. During that time, the full aperture measurements of the stimulated Brillouin scattering and …

Time Resolved X-Ray Diffraction (TRXRD) experiments were used to directly observe phase transformations occurring during gas tungsten arc spot welding of Ti-6Al-4V. These in-situ x-ray diffraction experiments tracked the evolution of the {alpha} {yields} {beta} {yields} L {yields} {beta} {yields} {alpha}/{alpha}{prime} phase transformation sequence in real time during rapid weld heating and cooling. Three different weld locations were examined, providing kinetic information about phase transformations in the fusion zone (FZ) and heat affected zone (HAZ) under different heating and cooling rates and at different temperatures. The TRXRD data were further coupled with the results of thermodynamic calculations of phase equilibria and numerical modeling to compute the weld temperatures. The results suggest that significant superheat is required above the {beta} transus temperature to complete the {alpha} {yields} {beta} transformation at all locations during weld heating, and that the amount of superheat decreases with distance from the center of the weld where the heating rates are lower. Johnson-Mehl-Avrami modeling of the weld heating kinetics produced a set of parameters that allowed the prediction of the {alpha} {yields} {beta} phase transformation rate at each location, but were not successful in determining a definitive mechanism for the transformation. The {beta} {yields} {alpha} transformation during …

We present the results of a study in which we reduced the calculated intrinsic radiation asymmetry of a particular indirectly-driven cryogenic DT ignition target design through a series of two-dimensional and three-dimensional radiation hydrodynamic calculations of the integrated hohlraum/capsule system. We reduced the amplitude of the time-dependent P{sub 2} Legendre mode of the radiation flux onto the capsule by adjusting the beam pointing and changing the amount of laser power in the outer cone of beams relative to that in the inner cone of beams. In addition, we reduced the amplitude of a significant Y{sub 44} mode that peaks early in time by adjusting the relative pointing of the 23.5 and 30 inner cone beams.

The axion is a hypothetical elementary particle and cold dark matter candidate. In this RF cavity experiment, halo axions entering a resonant cavity immersed in a static magnetic field convert into microwave photons, with the resulting photons detected by a low-noise receiver. The ADMX Collaboration presents new limits on the axion-to-photon coupling and local axion dark matter halo mass density from a RF cavity axion search in the axion mass range 1.9-2.3 {micro}eV, broadening the search range to 1.9-3.3 {micro}eV. In addition, we report first results from an improved analysis technique.

The challenges of modern complicated systems regarding their design, analysis, and management are put in a historical context to better propose a framework for the future involving complementary uses of testing, modeling, and performance functions.

Concert presented at the UNT College of Music Winspear Performance Hall.

The National Museum of the Pacific War presents an oral interview with Walter B. Neitsch: He was inducted at Ft. Sam Houston, Texas and received basic training at Fort Leonard Wood, Missouri and later at the Army Engineer Vancouver Barracks. He speaks of working with the 340th Army Engineers Construction Battalion to construct the ALCAN (Alaska-Canadian) Highway as well as rebuilding an airport in Darwin, Australia, and repairing roads and bridges in Luzon in the Phillipines where he saw Japanese soldiers coming in to surrender at the end of the war. He also told of the death from seasickness of a fellow soldier while in transit on the US Motorship Pennant and becoming a shellback when their ship crossed the equator.

The National Museum of the Pacific War presents an oral interview with James D. Rothermel. Rothermel was born in Burton, Texas 20 February 1918. Enlisting in the Navy in 1942, he had boot camp at Norfolk, Virginia. After spending a short time at Providence, Rhode Island, he was sent to Treasure Island, California and assigned to the 14th Naval Construction Battalion. During September 1942 he went aboard the M.S. Sommelsdijk, a converted Dutch freighter, and tells of the trip to Noumea, New Caledonia. From there the unit was sent to Guadalcanal, which had not yet been secured. The unit constructed two new airstrips on the island and Rothermel describes the other work completed. He tells of the nightly visits by a Japanese bomber, which would indiscriminately drop bombs every night, primarily for harassment. The bomber was called “Washing Machine Charlie” by all the troops on the island. He recounts the devastating affect that malaria, dengue fever and other jungle diseases had on the members of the 14th Battalion. The unit returned to Camp Parker, California, during November 1943. He recalls that during October 1944 the unit was sent to Saipan where they spent several months before being sent to Okinawa …

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.

The National Museum of the Pacific War presents an oral interview with Walter B. Neitsch: He was inducted at Ft. Sam Houston, Texas and received basic training at Fort Leonard Wood, Missouri and later at the Army Engineer Vancouver Barracks. He speaks of working with the 340th Army Engineers Construction Battalion to construct the ALCAN (Alaska-Canadian) Highway as well as rebuilding an airport in Darwin, Australia, and repairing roads and bridges in Luzon in the Phillipines where he saw Japanese soldiers coming in to surrender at the end of the war. He also told of the death from seasickness of a fellow soldier while in transit on the US Motorship Pennant and becoming a shellback when their ship crossed the equator.

The National Museum of the Pacific War presents an oral interview with James D. Rothermel. Rothermel was born in Burton, Texas 20 February 1918. Enlisting in the Navy in 1942, he had boot camp at Norfolk, Virginia. After spending a short time at Providence, Rhode Island, he was sent to Treasure Island, California and assigned to the 14th Naval Construction Battalion. During September 1942 he went aboard the M.S. Sommelsdijk, a converted Dutch freighter, and tells of the trip to Noumea, New Caledonia. From there the unit was sent to Guadalcanal, which had not yet been secured. The unit constructed two new airstrips on the island and Rothermel describes the other work completed. He tells of the nightly visits by a Japanese bomber, which would indiscriminately drop bombs every night, primarily for harassment. The bomber was called “Washing Machine Charlie” by all the troops on the island. He recounts the devastating affect that malaria, dengue fever and other jungle diseases had on the members of the 14th Battalion. The unit returned to Camp Parker, California, during November 1943. He recalls that during October 1944 the unit was sent to Saipan where they spent several months before being sent to Okinawa …

Photograph of a man inciting a round of applause on stage while playing the guitar outside of the Broken Spoke bar located in Austin, Texas. He wears a guitar strap with "Ray" printed on its surface.

Photograph of a performance inside of the Broken Spoke bar located in Austin, Texas. The performers are wearing cowboy hats while playing a fiddle, guitars, and the drums on stage. The photo is taken from underneath the musicians.

Photograph of audience members watching a string orchestra on stage outside of the Broken Spoke bar located in Austin, Texas.

Photograph of a performance inside of the Broken Spoke bar located in Austin, Texas. The performers are wearing cowboy hats while playing a fiddle and drums on stage. The photo is taken from underneath the musicians.

Photograph of a bass player standing on stage during a performance outside of the Broken Spoke bar located in Austin, Texas.

Photograph of an electric violin player performing on stage with a band during the Texas Western Swing Fiddling Showcase, held at the Broken Spoke bar, located in Austin, Texas. The photo is a close up of the performer.

Photograph of a fiddler performing on a darkened stage at the Broken Spoke bar, located in Austin, Texas. The photo is a close up of the performer.