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Homeland Security: DHS's Actions to Recruit and Retain Staff and Comply with the Vacancies Reform Act

Description: A letter report issued by the Government Accountability Office with an abstract that begins "Since its inception in 2003, the Department of Homeland Security (DHS) has faced numerous human capital challenges related to recruiting, retaining, and managing its workforce of nearly 171,000 employees. As requested, this report analyzes DHS's attrition, efforts to recruit and retain staff, use of external employees, and compliance with certain provisions of the Vacancies Reform Act, which requires ag… more
Date: July 16, 2007
Creator: United States. Government Accountability Office.
Partner: UNT Libraries Government Documents Department
open access

Human Capital: DOD Needs Better Internal Controls and Visibility over Costs for Implementing Its National Security Personnel System

Description: A letter report issued by the Government Accountability Office with an abstract that begins "Given a large-scale organizational change initiative, such as the Department of Defense's (DOD) National Security Personnel System (NSPS), is a substantial commitment that will take years to complete, it is important that DOD and Congress be kept informed of the full cost of implementing NSPS. Under the Comptroller General's authority to conduct evaluations on his own initiative, GAO analyzed the extent… more
Date: July 16, 2007
Creator: United States. Government Accountability Office.
Partner: UNT Libraries Government Documents Department
open access

Reexamining Regulations: Opportunities Exist to Improve Effectiveness and Transparency of Retrospective Reviews

Description: A letter report issued by the Government Accountability Office with an abstract that begins "Congress and presidents require agencies to review existing regulations to determine whether they should be retained, amended, or rescinded, among other things. GAO was asked to report the following for agency reviews: (1) numbers and types completed from 2001 through 2006; (2) processes and standards that guided planning, conducting, and reporting; (3) outcomes; and (4) factors that helped or impeded i… more
Date: July 16, 2007
Creator: United States. Government Accountability Office.
Partner: UNT Libraries Government Documents Department
open access

Veterans Affairs: Inadequate Controls over IT Equipment at Selected VA Locations Pose Continuing Risk of Theft, Loss, and Misappropriation

Description: A letter report issued by the Government Accountability Office with an abstract that begins "In July 2004, GAO reported that the six Department of Veterans Affairs (VA) medical centers it audited lacked a reliable property control database and had problems with implementation of VA inventory policies and procedures. Fewer than half the items GAO selected for testing could be located. Most of the missing items were information technology (IT ) equipment. Given recent thefts of laptops and data b… more
Date: July 16, 2007
Creator: United States. Government Accountability Office.
Partner: UNT Libraries Government Documents Department
open access

MULTISCALE MODELING OF POLYMER NANOCOMPOSITES

Description: Polymer Nanocomposites are an important class of nanomaterials with potential applications including but not limited to structural and cushion materials, electromagnetic and heat shields, conducting plastics, sensors, and catalysts for various chemical and bio processes. Success in most such applications hinges on molecular-level control of structure and assembly, and a deep understanding of how the overall morphology of various components and the interfaces between them affect the composite pr… more
Date: July 16, 2007
Creator: Maiti, A
Partner: UNT Libraries Government Documents Department
open access

Dynamics of Adipocyte Turnover in Humans

Description: Obesity is increasing in an epidemic fashion in most countries and constitutes a public health problem by enhancing the risk for cardiovascular disease and metabolic disorders such as type 2 diabetes. Owing to the increase in obesity, life expectancy may start to decrease in developed countries for the first time in recent history. The factors determining fat mass in adult humans are not fully understood, but increased lipid storage in already developed fat cells is thought to be most important… more
Date: July 16, 2007
Creator: Spalding, K; Arner, E; Westermark, P; Bernard, S; Buchholz, B; Bergmann, O et al.
Partner: UNT Libraries Government Documents Department
open access

Kaolinite dissolution and precipitation kinetics at 22oC and pH4

Description: Dissolution and precipitation rates of low defect Georgia kaolinite (KGa-1b) as a function of Gibbs free energy of reaction (or reaction affinity) were measured at 22 C and pH 4 in continuously stirred flow through reactors. Steady state dissolution experiments showed slightly incongruent dissolution, with a Si/Al ratio of about 1.12 that is attributed to the re-adsorption of Al on to the kaolinite surface. No inhibition of the kaolinite dissolution rate was apparent when dissolved aluminum was… more
Date: July 16, 2007
Creator: Yang, Li & Steefel, Carl I.
Partner: UNT Libraries Government Documents Department
open access

ADVANCED WAVEFORM SIMULATION FOR SEISMIC MONITORING EVENTS

Description: Comprehensive test ban monitoring in terms of location and discrimination has progressed significantly in recent years. However, the characterization of sources and the estimation of low yields remains a particular challenge. As the recent Korean shot demonstrated, we can probably expect to have a small set of teleseismic, far-regional and high-frequency regional data to analyze in estimating the yield of an event. Since stacking helps to bring signals out of the noise, it becomes useful to con… more
Date: July 16, 2007
Creator: Helmberger, D; Tromp, J & Rodgers, A
Partner: UNT Libraries Government Documents Department
open access

Electronic structure of cobalt nanocrystals suspended inliquid

Description: The electronic structure of cobalt nanocrystals suspended in liquid as a function of size has been investigated using in-situ x-ray absorption and emission spectroscopy. A sharp absorption peak associated with the ligand molecules is found that increases in intensity upon reducing the nanocrystal size. X-ray Raman features due to d-d and to charge-transfer excitations of ligand molecules are identified. The study reveals the local symmetry of the surface of {var_epsilon}-Co phase nanocrystals, … more
Date: July 16, 2007
Creator: Liu, Hongjian; Guo, Jinghua; Yin, Yadong; Augustsson, Andreas; Dong, Chungli; Nordgren, Joseph et al.
Partner: UNT Libraries Government Documents Department
open access

COMPASS, the COMmunity Petascale project for Accelerator Science and Simulation, a board computational accelerator physics initiative

Description: Accelerators are the largest and most costly scientific instruments of the Department of Energy, with uses across a broad range of science, including colliders for particle physics and nuclear science and light sources and neutron sources for materials studies. COMPASS, the Community Petascale Project for Accelerator Science and Simulation, is a broad, four-office (HEP, NP, BES, ASCR) effort to develop computational tools for the prediction and performance enhancement of accelerators. The tools… more
Date: July 16, 2007
Creator: Cary, J. R.; Spentzouris, P.; Amundson, J.; McInnes, L.; Borland, M.; Mustapha, B. et al.
Partner: UNT Libraries Government Documents Department
open access

On cylindrically converging shock waves shaped by obstacles

Description: Motivated by recent experiments, numerical simulations were performed of cylindrically converging shock waves. The converging shocks impinged upon a set of zero to sixteen regularly space obstacles. For more than two obstacles the resulting diffracted shock fronts formed polygonal shaped patterns near the point of focus. The maximum pressure and temperature as a function of number of obstacles were studied. The self-similar behavior of cylindrical, triangular and square-shaped shocks were also … more
Date: July 16, 2007
Creator: Eliasson, V; Henshaw, W D & Appelo, D
Partner: UNT Libraries Government Documents Department
open access

Multithreading for Synchronization Tolerance in MatrixFactorization

Description: Physical constraints such as power, leakage and pin bandwidth are currently driving the HPC industry to produce systems with unprecedented levels of concurrency. In these parallel systems, synchronization and memory operations are becoming considerably more expensive than before. In this work we study parallel matrix factorization codes and conclude that they need to be re-engineered to avoid unnecessary (and expensive) synchronization. We propose the use of multithreading combined with intelli… more
Date: July 16, 2007
Creator: Buttari, Alfredo; Dongarra, Jack; Husbands, Parry; Kurzak, Jakub & Yelick, Katherine
Partner: UNT Libraries Government Documents Department
open access

Application of Bomb Radiocarbon Chronologies to Shortfin Mako (Isurus oxyrinchus)

Description: There is an ongoing disagreement regarding the aging of the shortfin mako due to a difference of interpretation in the periodic deposition of vertebral growth band pairs, especially for the larger size classes. Using analysis of length-month information, tagging data, and length-frequency analysis, concluded that two band pairs were formed in the vertebral centrum every year (biannual band-pair interpretation). Cailliet et al. (1983), however, presented growth parameters based on the common ass… more
Date: July 16, 2007
Creator: Ardizzone, D; Cailliet, G M; Natanson, L J; Andrews, A H; Kerr, L A & Brown, T A
Partner: UNT Libraries Government Documents Department
open access

Measuring 10-1000 GeV Cosmic Ray Electrons with GLAST/LAT

Description: We present here the capabilities of the GLAST Large Area Telescope to detect cosmic ray high-energy (HE) electrons in the energy range from 10 GeV to 1 TeV. We also discuss the science topics that can be investigated with HE electron data and quantify the results with LAT instrument simulations. The science topics include CR propagation, calibration of the IC gamma-ray model, testing hypotheses regarding the origin of HE energy cosmic-ray electrons, searching for any signature of Kaluza Klein D… more
Date: July 16, 2007
Creator: Moiseev, Alexander A.; Ormes, Jonathan F. & Moskalenko, Igor V.
Partner: UNT Libraries Government Documents Department

[Alrene Hall and Jane Hope speaking to attendees]

Description: Photograph of Alrene Hall (left) and Jane Hope (right), presenters giving a lecture on the use of Book Systems' library software, Concourse, during a workshop. The two women are giving a workshop titled, Concourse and EZCat: An Introduction during the 40th anniversary Church and Synagogue Library Association conference held at the Inn at Valley Forge in King of Prussia, Pennsylvania.
Date: July 16, 2007
Creator: Olson, Mark
Partner: UNT Libraries Special Collections

[Conference guests attending Cindy Longacre workshop]

Description: Photograph of conference guests attending a workshop by Cindy Longacre titled "Managing your congregation’s small library," during the 40th anniversary Church and Synagogue Library Association conference held at the Inn at Valley Forge in King of Prussia, Pennsylvania.
Date: July 16, 2007
Creator: Olson, Mark
Partner: UNT Libraries Special Collections
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