32 Matching Results

Search Results

Results: 1 - 24 next
open access

Overstay Tracking: A Key Component of Homeland Security and a Layered Defense

Description: A letter report issued by the General Accounting Office with an abstract that begins "Each year, millions of visitors, foreign students, and immigrants come to the United States. Foreign visitors may enter on a legal temporary basis--that is, with an authorized period of admission that expires on a specific date--either (1) with temporary visas (generally for tourism, business, or work) or, in some cases, (2) as tourists or business visitors who are allowed to enter without visas. (The latter i… more
Date: May 21, 2004
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Great Lakes: A Comprehensive Strategy and Monitoring System Are Needed to Achieve Restoration Goals

Description: Testimony issued by the General Accounting Office with an abstract that begins "The five Great Lakes, which comprise the largest system of freshwater in the world, are threatened on many environmental fronts. To address the extent of progress made in restoring the Great Lakes Basin, which includes the lakes and surrounding area, GAO (1) identified the federal and state environmental programs operating in the basin and funding devoted to them, (2) evaluated the restoration strategies used and ho… more
Date: May 21, 2004
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Undocumented Aliens: Questions Persist about Their Impact on Hospitals' Uncompensated Care Costs

Description: A letter report issued by the General Accounting Office with an abstract that begins "About 7 million undocumented aliens lived in the United States in 2000, according to Immigration and Naturalization Service estimates. Hospitals in states where many of them live report that treating them can be a financial burden. GAO was asked to examine the relationship between treating undocumented aliens and hospitals' costs not paid by patients or insurance. GAO was also asked to examine federal funding … more
Date: May 21, 2004
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Information Technology: Homeland Security Should Better Balance Need for System Integration Strategy with Spending for New and Enhanced Systems

Description: A letter report issued by the General Accounting Office with an abstract that begins "The Department of Homeland Security (DHS) faces the daunting task of bringing together 22 diverse agencies to lead efforts to protect the homeland. Among the challenges posed by this transformation is integrating these agencies' diverse information technology (IT) systems: mission support, administration, and infrastructure (e.g., networks). GAO was asked to determine (1) whether DHS has defined its IT systems… more
Date: May 21, 2004
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

2010 Census: Overseas Enumeration Test Raises Need for Clear Policy Direction

Description: A letter report issued by the General Accounting Office with an abstract that begins "In the 1990 and 2000 Censuses, U.S. military and federal civilian employees overseas were included in the numbers used for apportioning Congress. Currently, the U.S. Census Bureau (Bureau) is assessing the practicality of counting all Americans abroad by holding a test census in France, Kuwait, and Mexico. GAO was asked to (1) assess the soundness of the test design, and (2) examine what past court decisions h… more
Date: May 21, 2004
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Modelling the Madden Julian Oscillation

Description: The MJO has long been an aspect of the global climate that has provided a tough test for the climate modelling community. Since the 1980s there have been numerous studies of the simulation of the MJO in atmospheric general circulation models (GCMs), ranging from Hayashi and Golder (1986, 1988) and Lau and Lau (1986), through to more recent studies such as Wang and Schlesinger (1999) and Wu et al. (2002). Of course, attempts to reproduce the MJO in climate models have proceeded in parallel with … more
Date: May 21, 2004
Creator: Slingo, J. M.; Inness, P. M. & Sperber, K. R.
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
open access

Pilot-Scale Testing of a Spin Tek Rotary Microfilter With Welded Disks and Simulated Savannah River Site High Level Waste

Description: The Department of Energy is developing processes to treat Savannah River Site (SRS) radioactive waste. In the first step, personnel contact the incoming salt solution that contains entrained sludge with monosodium titanate (MST) to adsorb strontium and select actinides. They filter the resulting slurry to remove the sludge and MST. The filtrate receives further treatment to remove cesium. Previously, personnel conducted a review of solid-liquid separation technologies and identified the rotary … more
Date: May 21, 2004
Creator: POIRIER, MICHAEL
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Theoretical Investigations of Plasma-Based Accelerators and Other Advanced Accelerator Concepts

Description: Theoretical investigations of plasma-based accelerators and other advanced accelerator concepts. The focus of the work was on the development of plasma based and structure based accelerating concepts, including laser-plasma, plasma channel, and microwave driven plasma accelerators.
Date: May 21, 2004
Creator: Shuets, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Multilayered Box Model for Calculating Preliminary RemediationGoals in Soil Screening

Description: In the process of screening a soil against a certain contaminant, we define the health-risk based preliminary remediation goal (PRG) as the contaminant concentration above which some remedial action may be required. PRG is thus the first standard (or guidance) for judging a site. An over-estimated PRG (a too-large value) may cause us to miss some contaminated sites that can threaten human health and the environment. An under-estimated PRG (a too-small value), on the other hand, may lead to unne… more
Date: May 21, 2004
Creator: Shan, Chao & Javandel, Iraj
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Aspherical supernovae

Description: Although we know that many supernovae are aspherical, the exact nature of their geometry is undetermined. Because all the supernovae we observe are too distant to be resolved, the ejecta structure can't be directly imaged, and asymmetry must be inferred from signatures in the spectral features and polarization of the supernova light. The empirical interpretation of this data, however, is rather limited--to learn more about the detailed supernova geometry, theoretical modeling must been undertak… more
Date: May 21, 2004
Creator: Kasen, Daniel Nathan
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
open access

Fluid Effects on Shear Waves in FInely Layered Porous Media

Description: Although there are five effective shear moduli for any layered VTI medium, one and only one effective shear modulus for the layered system contains all the dependence of pore fluids on the elastic or poroelastic constants that can be observed in vertically polarized shear waves. Pore fluids can increase the magnitude the shear energy stored by this modulus by a term that ranges from the smallest to the largest shear moduli of the VTI system. But, since there are five shear moduli in play, the i… more
Date: May 21, 2004
Creator: Berger, E. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Gas Generation Testing of Uranium Metal in Simulated K Basins Sludge and Grouted Sludge Waste Forms

Description: The evolving plan for most of the KE and KW Basin sludges is disposition to WIPP as remote handled (RH) TRU. Because the hydrogen gas concentration in the sealed transportation cask destined for WIPP is limited by flammability safety, the number of containers and shipments to WIPP likely will be driven by the rate of hydrogen generated by the contained uranium metals reaction with water. Therefore, gas generation testing with uranium metal particles of known surface area and immobilized in cand… more
Date: May 21, 2004
Creator: Delegard, Calvin H.; Schmidt, Andrew J.; Sell, Rachel L.; Sinkov, Sergei I. & Bryan, Samuel A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Rapid Synchronization of Ultra-Wideband Transmitted-Reference Receivers

Description: Time synchronization is a major challenge and a rich area of study in ultra-wideband (UWB) communication systems. Transmitted-reference (TR) receivers avoid the stringent synchronization requirements that exist in conventional pulse detection schemes. However, the performance of such receivers is highly sensitive to precise timing acquisition and tracking of integration window that defines the limits of the finite integrator prior to final decision block. In this paper we propose a novel rapid … more
Date: May 21, 2004
Creator: Nekoogar, F.; Dowla, F. & Spiridon, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Campaign Financing

Description: This report discusses concerns over financing federal elections, such as political action committees (PACs) and proposed reforms to campaign finance.
Date: May 21, 2004
Creator: Cantor, Joseph E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Function of Conserved Residues of Human Glutathione Synthetase: Implications for the ATP-Grasp Enzymes

Description: Article examining the mechanism of Glutathione synthetase, an enzyme that belongs to the glutathione synthetase ATP-binding domain-like superfamily. A variety of structural alignment methods were applied and four highly conserved residues of human glutathione synthetase (Glu-144, Asn-146, Lys-305, and Lys-364) were identified in the binding site. The function of these was studied by experimental and computational site-directed mutagenesis.
Date: May 21, 2004
Creator: Dinescu, Adriana; Cundari, Thomas R., 1964-; Bhansali, Vikas S.; Luo, Jia-Li & Anderson, Mary E.
Item Type: Refine your search to only Article
Partner: UNT College of Science
Back to Top of Screen