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403 Matching Results
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Cirillo's Inbox Folder E-mails Concerning NAS Oceana
Cirillo's Inbox Folder E-mails Concerning NAS Oceana.
Date:
October 14, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Text
System:
The UNT Digital Library
Fetzer's E-mails Concerning NAS Oceana: 4 August - 12 August 2005
Fetzer's E-mails Concerning NAS Oceana: 4 August - 12 August 2005.
Date:
October 14, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Text
System:
The UNT Digital Library
Fetzer's E-mails Concerning NAS Oceana: 12 August - 22 August 2005
Fetzer's E-mails Concerning NAS Oceana: 12 August - 22 August 2005.
Date:
October 14, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Text
System:
The UNT Digital Library
Fetzer's E-mails Concerning NAS Oceana: 22 August - 12 September 2005
Fetzer's E-mails Concerning NAS Oceana: 22 August - 12 September 2005.
Date:
October 14, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Text
System:
The UNT Digital Library
Navy Portion of GAO Report GAO-05-785 (Analysis of DoD's 2005 Selection Process and Recommendations for Base Closures and Realignments) (pages 92 - 110)
Section entitled "The Department of the Navy Selection Process and Recommendations" from GAO Report GAO-05-785 (Analysis of DoD's 2005 Selection Process and Recommendations for Base Closures and Realignments).
Date:
October 14, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Book
System:
The UNT Digital Library
Cecil Field, Jacksonville, FL. and Airspace - Current and Future Airspace Encroachment
Cecil Field, Jacksonville, FL. and Airspace - Current and Future Airspace Encroachment 1993 BRAC Round NAS Master Jet Base, Cecil Field: Closure
Date:
October 14, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Text
System:
The UNT Digital Library
Commission Reports
Commission Reports
Date:
October 14, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Book
System:
The UNT Digital Library
Community Correspondence
Community Correspondence
Date:
October 14, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Letter
System:
The UNT Digital Library
O-MM-0109-db Provision of Certified DON Data to BRAC 05 JCSGs
Disregard Restriction of Header and Footer: O-MM-0109-db Provision of Certified DON Data to BRAC 05 JCSGs. Navy memo dtd February 14, 2005.
Date:
October 14, 2005
Creator:
United States. Department of Defense.
Object Type:
Text
System:
The UNT Digital Library
High-Level Control System in C#*
We have started upgrading the control room programs for the injector at the Advanced Light Source (ALS). We chose to program in C* exclusively on the .NET Framework to create EPICS client programs on Windows Vista PCs. This paper reports the status of this upgrade project.
Date:
October 14, 2008
Creator:
Nishimura, Hiroshi; Timossi, Chris; Portmann, Greg; Urashka, Michael.; Ikami, Craig & Beaudrow, M.
Object Type:
Article
System:
The UNT Digital Library
Mask inspection microscopy with 13.2 nm table-top laser illumination
We report the demonstration of a reflection microscope that operates at 13.2-nm wavelength with a spatial resolution of 55 {+-} 3 nm. The microscope uses illumination from a table-top EUV laser to acquire aerial images of photolithography masks with a 20 second exposure time. The modulation transfer function of the optical system was characterized.
Date:
October 14, 2008
Creator:
Brizuela, Fernando; Wang, Yong; Brewer, Courtney A.; Pedaci, Francesco; Chao, Weilun; Anderson, Erik H. et al.
Object Type:
Article
System:
The UNT Digital Library
The Potential of the Cell Processor for Scientific Computing
The slowing pace of commodity microprocessor performance improvements combined with ever-increasing chip power demands has become of utmost concern to computational scientists. As a result, the high performance computing community is examining alternative architectures that address the limitations of modern cache-based designs. In this work, we examine the potential of the using the forth coming STI Cell processor as a building block for future high-end computing systems. Our work contains several novel contributions. We are the first to present quantitative Cell performance data on scientific kernels and show direct comparisons against leading superscalar (AMD Opteron), VLIW (IntelItanium2), and vector (Cray X1) architectures. Since neither Cell hardware nor cycle-accurate simulators are currently publicly available, we develop both analytical models and simulators to predict kernel performance. Our work also explores the complexity of mapping several important scientific algorithms onto the Cells unique architecture. Additionally, we propose modest microarchitectural modifications that could significantly increase the efficiency of double-precision calculations. Overall results demonstrate the tremendous potential of the Cell architecture for scientific computations in terms of both raw performance and power efficiency.
Date:
October 14, 2005
Creator:
Williams, Samuel; Shalf, John; Oliker, Leonid; Husbands, Parry; Kamil, Shoaib & Yelick, Katherine
Object Type:
Article
System:
The UNT Digital Library
Gene Transfer & Hybridization Studies in Hyperthermophilic Species
A. ABSTRACT The importance of lateral gene transfer (LGT) in the evolution of microbial species has become increasingly evident with each completed microbial genome sequence. Most significantly, the genome of Thermotoga maritima MSB8, a hyperthermophilic bacterium isolated by Karl Stetter and workers from Vulcano Italy in 1986, and sequenced at The Institute for Genomic Research (TIGR) in Rockville Maryland in 1999, revealed extensive LGT between % . this bacterium and members of the archaeal domain (in particular Archaeoglobus fulgidus, and Pyracoccus frcriosus species). Based on whole genome comparisons, it was estimated that 24% of the genetic information in this organism was acquired by genetic exchange with archaeal species, Independent analyses including periodicity analysis of the T. maritimu genomic DNA sequence, phylogenetic reconstruction based on genes that appear archaeal-like, and codon and amino acid usage, have provided additional evidence for LGT between T. maritima and the archaea. More recently, DiRuggiero and workers have identified a very recent LGT event between two genera of hyperthermophilic archaea, where a nearly identical DNA fragment of 16 kb in length flanked by insertion sequence (IS) elements, exists. Undoubtedly, additional examples of LGT will be identified as more microbial genomes are completed. For the present moment …
Date:
October 14, 2005
Creator:
Nelson, Karen E.
Object Type:
Report
System:
The UNT Digital Library
The Crystal Structures of EAP Domains from Staphylococcus aureus Reveal an Unexpected Homology to Bacterial Superantigens
The Eap (extracellular adherence protein) of Staphylococcus aureus functions as a secreted virulence factor by mediating interactions between the bacterial cell surface and several extracellular host proteins. Eap proteins from different Staphylococcal strains consist of four to six tandem repeats of a structurally uncharacterized domain (EAP domain). We have determined the three-dimensional structures of three different EAP domains to 1.8, 2.2, and 1.35 {angstrom} resolution, respectively. These structures reveal a core fold that is comprised of an {alpha}-helix lying diagonally across a five-stranded, mixed {beta}-sheet. Comparison of EAP domains with known structures reveals an unexpected homology with the C-terminal domain of bacterial superantigens. Examination of the structure of the superantigen SEC2 bound to the {beta}-chain of a T-cell receptor suggests a possible ligand-binding site within the EAP domain (Fields, B. A., Malchiodi, E. L., Li, H., Ysern, X., Stauffacher, C. V., Schlievert, P. M., Karjalainen, K., and Mariuzza, R. (1996) Nature 384, 188-192). These results provide the first structural characterization of EAP domains, relate EAP domains to a large class of bacterial toxins, and will guide the design of future experiments to analyze EAP domain structure/function relationships.
Date:
October 14, 2005
Creator:
Geisbrecht, B V; Hamaoka, B Y; Perman, B; Zemla, A & Leahy, D J
Object Type:
Article
System:
The UNT Digital Library
Chromosomal mosaicism in mouse two-cell embryos after paternal exposure to acrylamide
Chromosomal mosaicism in human preimplantation embryos is a common cause ofspontaneous abortions, however, our knowledge of its etiology is limited. We used multicolor fluorescence in situ hybridization (FISH) painting to investigate whether paternally-transmitted chromosomal aberrations result in mosaicism in mouse 2-cell embryos. Paternal exposure to acrylamide, an important industrial chemical also found in tobacco smoke and generated during the cooking process of starchy foods, produced significant increases in chromosomally defective 2-cell embryos, however, the effects were transient primarily affecting the postmeiotic stages of spermatogenesis. Comparisons with our previous study of zygotes demonstrated similar frequencies of chromosomally abnormal zygotes and 2-cell embryos suggesting that there was no apparent selection against numerical or structural chromosomal aberrations. However, the majority of affected 2-cell embryos were mosaics showing different chromosomal abnormalities in the two blastomeric metaphases. Analyses of chromosomal aberrations in zygotes and 2-cell embryos showed a tendency for loss of acentric fragments during the first mitotic division ofembryogenesis, while both dicentrics and translocations apparently underwent propersegregation. These results suggest that embryonic development can proceed up to the end of the second cell cycle of development in the presence of abnormal paternal chromosomes and that even dicentrics can persist through cell division. The high …
Date:
October 14, 2008
Creator:
Marchetti, Francesco; Bishop, Jack; Lowe, Xiu & Wyrobek, Andrew J
Object Type:
Article
System:
The UNT Digital Library
Scaling Behavior of Barkhausen Avalanches along the Hysteresis loop in Nucleation-Mediated Magnetization Reversal Process
We report the scaling behavior of Barkhausen avalanches for every small field step along the hysteresis loop in CoCrPt alloy film having perpendicular magnetic anisotropy. Individual Barkhausen avalanche is directly observed utilizing a high-resolution soft X-ray microscopy that provides real space images with a spatial resolution of 15 nm. Barkhausen avalanches are found to exhibit power-law scaling behavior at all field steps along the hysteresis loop, despite their different patterns for each field step. Surprisingly, the scaling exponent of the power-law distribution of Barkhausen avalanches is abruptly altered from 1 {+-} 0.04 to 1.47 {+-} 0.03 as the field step is close to the coercive field. The contribution of coupling among adjacent domains to Barkhausen avalanche process affects the sudden change of the scaling behavior observed at the coercivity-field region on the hysteresis loop of CoCrPt alloy film.
Date:
October 14, 2008
Creator:
Im, Mi-Young; Fischer, Peter; Kim, D.-H. & Shin, S.-C.
Object Type:
Article
System:
The UNT Digital Library
Experimental Approaches to Predict the Behavior of Liquid Films
None
Date:
October 14, 2005
Creator:
Palmer, D. A.
Object Type:
Presentation
System:
The UNT Digital Library
The effect of CO2(aq), Al(aq) and temperature on feldspar dissolution
The authors measured labradorite (Ca{sub 0.6}Na{sub 0.4}Al{sub 1.6}Si{sub 2.4}O{sub 8}) dissolution rates using a mixed flow reactor from 30 to 130 C as a function of CO{sub 2} (3 x 10{sup -3} and 0.6 M), and aluminum (10{sup -6} to 10{sup -3}M) at pH 3.2. Over these conditions, labradorite dissolution can be described with a single rate expression that accounts for observed increases in dissolution rate with temperature and decreases in dissolution rate with dissolved aluminum: Rate{sub Si} (mol Labradorite cm{sup -2} s{sup -1}) = k{double_prime} x 10{sup -Ea/2.303RT} [(a{sub H{sup +}}{sup 3n}/a{sub Al{sup 3+}}{sup n})K{sub T}/(1+K{sub T} (a{sub H{sup +}}{sup 3n}/a{sub Al{sup 3+}}{sup n}))] where the apparent dissolution rate constant, k{double_prime} = 10{sup -5.69} (mol Labradorite cm{sup -2}s{sup -1}); the net activation energy, E{sub a} = 10.06 (kcal mol{sup -1}); H{sup +}-Al{sup 3+} exchange coefficient, n = 0.31; and silica rich surface complex formation constant K{sub T} = 4.5 to 5.6 from 30 to 130 C. The effect of CO{sub 2}(aq) on mineral dissolution is accounted for by changes in solution pH. At temperatures below 60 C, labradorite dissolves incongruently with preferential dissolution of Na, Ca and Al over Si.
Date:
October 14, 2003
Creator:
Carroll, S. & Knauss, K.
Object Type:
Article
System:
The UNT Digital Library
Studies of regional-scale climate variability and change: Hidden Markov models and coupled ocean-atmosphere modes
In this project we developed further a twin approach to the study of regional-scale climate variability and change. The two approaches involved probabilistic network (PN) models (sometimes called dynamic Bayesian networks) and intermediate-complexity coupled ocean-atmosphere models (ICMs). We thus made progress in identifying the predictable modes of climate variability and investigating their impacts on the regional scale. In previous work sponsored by DOEâÂÂs Climate Change Prediction Program (CCPP), we had developed a family of PNs (similar to Hidden Markov Models) to simulate historical records of daily rainfall, and used them to downscale seasonal predictions of general circulation models (GCMs). Using an idealized atmospheric model, we had established a novel mechanism through which ocean-induced sea-surface temperature (SST) anomalies might inï¬Âuence large-scale atmospheric circulation patterns on interannual and longer time scales; similar patterns were found in a hybrid coupled oceanâÂÂatmosphereâÂÂsea-ice model. In this continuation project, we built on these ICM results and PN model development to address prediction of rainfall and temperature statistics at the local scale, associated with global climate variability and change, and to investigate the impact of the latter on coupled oceanâÂÂatmosphere modes. Our main project results consist of extensive further development of the hidden Markov models for rainfall …
Date:
October 14, 2008
Creator:
Ghil, M.; Kravtsov, S.; Robertson, A. W. & Smyth, P.
Object Type:
Report
System:
The UNT Digital Library
The Greensheet (Houston, Tex.), Vol. 40, No. 438, Ed. 1 Wednesday, October 14, 2009
Free weekly newspaper that includes business and classified advertising.
Date:
October 14, 2009
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 39, No. 434, Ed. 1 Tuesday, October 14, 2008
Free weekly newspaper that includes business and classified advertising.
Date:
October 14, 2008
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 36, No. 430, Ed. 1 Friday, October 14, 2005
Free weekly newspaper that includes business and classified advertising.
Date:
October 14, 2005
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 39, No. 433, Ed. 1 Tuesday, October 14, 2008
Free weekly newspaper that includes business and classified advertising.
Date:
October 14, 2008
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 36, No. 432, Ed. 1 Friday, October 14, 2005
Free weekly newspaper that includes business and classified advertising.
Date:
October 14, 2005
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History