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Teaching With The Portal to Texas History

This presentation discusses The Portal to Texas History and how the collections and resources for educators are used to enhance learning and as teaching aids.
Date: October 13, 2006
Creator: Belden, Dreanna
Object Type: Presentation
System: The UNT Digital Library
Food Stamp Trafficking: FNS Could Enhance Program Integrity by Better Targeting Stores Likely to Traffic and Increasing Penalties (open access)

Food Stamp Trafficking: FNS Could Enhance Program Integrity by Better Targeting Stores Likely to Traffic and Increasing Penalties

A letter report issued by the Government Accountability Office with an abstract that begins "Every year, food stamp recipients exchange hundreds of millions of dollars in benefits for cash instead of food with retailers across the country, a practice known as trafficking. From 2000 to 2005, the Food Stamp Program has grown from $15 billion to $29 billion in benefits. During this period of time, the U.S. Department of Agriculture's (USDA) Food and Nutrition Service (FNS) replaced paper food stamp coupons with electronic benefit transfer (EBT) cards that work much like a debit card at the grocery checkout counter. Given these program changes and continuing retailer fraud, GAO was asked to provide information on (1) what is known about the extent and nature of retailer food stamp trafficking, (2) the efforts of federal agencies to combat such trafficking, and (3) program vulnerabilities. To do this, GAO interviewed agency officials, visited 10 field offices, conducted case file reviews, and analyzed data from the FNS retailer database."
Date: October 13, 2006
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
Waste Isolation Pilot Plant 2005 Site Environmental Report (open access)

Waste Isolation Pilot Plant 2005 Site Environmental Report

The purpose of this report is to provide information needed by the DOE to assess WIPP's environmental performance and to make WIPP environmental information available to stakeholders and members of the public. This report has been prepared in accordance with DOE Order 231.1A and DOE guidance. This report documents WIPP's environmental monitoring programs and their results for 2004. The WIPP Project is authorized by the DOE National Security and Military Applications of Nuclear Energy Authorization Act of 1980 (Pub. L. 96-164). After more than 20 years of scientific study and public input, WIPP received its first shipment of waste on March 26, 1999. Located in southeastern New Mexico, WIPP is the nation's first underground repository permitted to safely and permanently dispose of TRU radioactive and mixed waste (as defined in the WIPP LWA) generated through defense activities and programs. TRU waste is defined, in the WIPP LWA, as radioactive waste containing more than 100 nanocuries (3,700 becquerels [Bq]) of alpha-emitting TRU isotopes per gram of waste, with half-lives greater than 20 years except for high-level waste, waste that has been determined not to require the degree of isolation required by the disposal regulations, and waste the U.S. Nuclear Regulatory Commission …
Date: October 13, 2006
Creator: Services, Washington Regulatory and Environmental
Object Type: Report
System: The UNT Digital Library
Germanium-Based Detectors for Gamma-Ray Imaging andSpectroscopy (open access)

Germanium-Based Detectors for Gamma-Ray Imaging andSpectroscopy

Germanium-based detectors are the standard technology usedfor gamma-ray spectroscopy when high efficiency and excellent energyresolution are desired. By dividing the electrical contacts on thesedetectors into segments, the locations of the gamma-ray interactionevents within the detectors can be determined as well as the depositedenergies. This enables simultaneous gamma-ray imaging and spectroscopyand leads to applications in the areas of astronomy, nuclear physics,environmental remediation, nuclear nonproliferation, and homelandsecurity. Producing the fine-pitched electrode segmentation oftenrequired for imaging has been problematic in the past. To address thisissue, we have developed an amorphous-semiconductor contact technology.Using this technology, fully passivated detectors with closely spacedcontacts can be produced using a simple fabrication process. The currentstate of the amorphous-semiconductor contact technology and thechallenges that remain will be given in this paper.
Date: October 13, 2006
Creator: Amman, Mark; Luke, Paul N. & Boggs, Steven E.
Object Type: Article
System: The UNT Digital Library
Computing Criticality of Lines in Power Systems (open access)

Computing Criticality of Lines in Power Systems

We propose a computationally efficient method based onnonlinear optimization to identify critical lines, failure of which cancause severe blackouts. Our method computes criticality measure for alllines at a time, as opposed to detecting a single vulnerability,providing a global view of the system. This information on criticality oflines can be used to identify multiple contingencies by selectivelyexploring multiple combinations of broken lines. The effectiveness of ourmethod is demonstrated on the IEEE 30 and 118 bus systems, where we canvery quickly detect the most critical lines in the system and identifysevere multiple contingencies.
Date: October 13, 2006
Creator: Pinar, Ali; Reichert, Adam & Lesieutre, Bernard
Object Type: Article
System: The UNT Digital Library
Final Report for OJI grant. (open access)

Final Report for OJI grant.

This document is a final report for DOE grant DE-FG02-00ER41147. The research described herein was funded in large part by this grant with additional support from the National Science Foundation. The primary focus of Averett's research effort is centered around the polarized {sup 3}He target in Hall A at Jefferson Lab. The close proximity of the College of William and Mary to Jefferson Lab has provided an outstanding opportunity to maintain a very active research program which still satisfying the demands of the college. Our research group includes four faculty, two post-doctoral fellows and eight graduate students. Averett also maintains a fully functional polarized {sup 3}e target lab at William and Mary which allows him to support the research program at Jefferson Lab while also doing research on polarized targets themselves. Since 1998, seven experiments using polarized {sup 3}He have been completed by the Jefferson Lab Hall A Polarized {sup 3}He Collaboration. Ten publications have been produced on this research and analysis of the two most recently completed experiments is underway. A description of the recent experiments and results is given below. In addition to target expertise, Averett has remained one of the most active collaborators in the data analysis …
Date: October 13, 2006
Creator: Averett, Todd
Object Type: Report
System: The UNT Digital Library
Comment on "Paleoclassical Transport in Low-Collisionality Toroidal Plasmas" (open access)

Comment on "Paleoclassical Transport in Low-Collisionality Toroidal Plasmas"

Paleoclassical transport [1] is a recently proposed fundamental process that is claimed to occur in resistive plasmas and to be missing in the collisional drift-kinetic equations (DKE) in standard use. In this Comment we raise three puzzles presented by paleoclassical transport as developed in [1], one to do with conservation and two concerning uniqueness.
Date: October 13, 2006
Creator: LoDestro, L. L.
Object Type: Article
System: The UNT Digital Library
A Strong-Lens Survey in AEGIS: the influence of large scalestructure (open access)

A Strong-Lens Survey in AEGIS: the influence of large scalestructure

We report on the results of a visual search for galaxy-scale strong gravitational lenses over 650 arcmin{sup 2} of HST/ACS (F606W and F814W) imaging in the DEEP2-Extended Groth Strip (EGS). In addition to a previously-known Einstein Cross also found by our search (the 'Cross', HSTJ141735+52264, z{sub lens} = 0.8106, z{sub source} = 3.40), we identify two new strong galaxy-galaxy lenses with multiple extended arcs. The first, HSTJ141820+52361 (the 'Dewdrop'; z{sub lens} = 0.5798), lenses two distinct extended sources into two pairs of arcs (z{sub source} = 0.9818), while the second, HSTJ141833+52435 (the 'Anchor'; z{sub lens} = 0.4625), produces a single pair of arcs (z{sub lens} not yet known). Four less convincing arc/counter-arc and two-image lens candidates are also found and presented for completeness. Lenses are found in a both underdense and overdense local environments, as characterized by a robust measure, 1+{delta}{sub 3}, a normalized density that uses the distance to the third nearest neighbor. All three definite lenses are fit reasonably well by simple singular isothermal ellipsoid models including external shear, giving {chi}{sub {nu}}{sup 2} values close to unity. These shears are much greater than those implied by a simple consideration of the three-dimensional convergence and shear from galaxies along …
Date: October 13, 2006
Creator: Moustakas, Leonidas A.; Marshall, Phil; Newman, Jeffrey A.; Coil,Alison L.; Cooper, Michael C.; Davis, Marc et al.
Object Type: Article
System: The UNT Digital Library
Greensheet (Houston, Tex.), Vol. 37, No. 430, Ed. 1 Friday, October 13, 2006 (open access)

Greensheet (Houston, Tex.), Vol. 37, No. 430, Ed. 1 Friday, October 13, 2006

Free weekly newspaper that includes business and classified advertising.
Date: October 13, 2006
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 37, No. 432, Ed. 1 Friday, October 13, 2006 (open access)

Greensheet (Houston, Tex.), Vol. 37, No. 432, Ed. 1 Friday, October 13, 2006

Free weekly newspaper that includes business and classified advertising.
Date: October 13, 2006
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Scene: North Texas Daily (Denton, Tex.), Vol. 91, No. 28, Ed. 1 Friday, October 13, 2006 (open access)

Scene: North Texas Daily (Denton, Tex.), Vol. 91, No. 28, Ed. 1 Friday, October 13, 2006

Weekly magazine edition of the daily student newspaper from the University of North Texas in Denton, Texas that includes local, state and campus news along with advertising.
Date: October 13, 2006
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Dallas Voice (Dallas, Tex.), Vol. 23, No. 22, Ed. 1 Friday, October 13, 2006 (open access)

Dallas Voice (Dallas, Tex.), Vol. 23, No. 22, Ed. 1 Friday, October 13, 2006

Weekly newspaper from Dallas, Texas that includes local, state, and national news and advertising of interest to the Lesbian, Gay, Bisexual, and Transgender (LGBT) community.
Date: October 13, 2006
Creator: Nash, Tammye
Object Type: Newspaper
System: The UNT Digital Library
Federal Research and Development: Budgeting and Priority-Setting Issues, 109th Congress (open access)

Federal Research and Development: Budgeting and Priority-Setting Issues, 109th Congress

None
Date: October 13, 2006
Creator: Knezo, Genevieve J.
Object Type: Report
System: The UNT Digital Library
Greensheet (Houston, Tex.), Vol. 37, No. 431, Ed. 1 Friday, October 13, 2006 (open access)

Greensheet (Houston, Tex.), Vol. 37, No. 431, Ed. 1 Friday, October 13, 2006

Free weekly newspaper that includes business and classified advertising.
Date: October 13, 2006
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Multi-Regional Reactive Transport Due to Strong Anisotropy in Unsaturated Soils with Evolving Scales of Heterogeneity (open access)

Multi-Regional Reactive Transport Due to Strong Anisotropy in Unsaturated Soils with Evolving Scales of Heterogeneity

Anisotropic and heterogeneous flow in unsaturated porous media is dependent on saturation conditions, and currently there exist limited options that adequately model this phenomenon. The phenomenon of lateral spreading commonly attributed to anisotropy can move contaminants beyond compliance boundaries at unexpected velocitites essentially bypassing large regions of the subsurface.
Date: October 13, 2006
Creator: Mo, Xinghua
Object Type: Report
System: The UNT Digital Library
A Survey of Probabilistic Models for Relational Data (open access)

A Survey of Probabilistic Models for Relational Data

Traditional data mining methodologies have focused on ''flat'' data i.e. a collection of identically structured entities, assumed to be independent and identically distributed. However, many real-world datasets are innately relational in that they consist of multi-modal entities and multi-relational links (where each entity- or link-type is characterized by a different set of attributes). Link structure is an important characteristic of a dataset and should not be ignored in modeling efforts, especially when statistical dependencies exist between related entities. These dependencies can in fact significantly improve the accuracy of inference and prediction results, if the relational structure is appropriately leveraged (Figure 1). The need for models that can incorporate relational structure has been accentuated by new technological developments which allow us to easily track, store, and make accessible large amounts of data. Recently, there has been a surge of interest in statistical models for dealing with richly interconnected, heterogeneous data, fueled largely by information mining of web/hypertext data, social networks, bibliographic citation data, epidemiological data and communication networks. Graphical models have a natural formalism for representing complex relational data and for predicting the underlying evolving system in a dynamic framework. The present survey provides an overview of probabilistic methods and techniques …
Date: October 13, 2006
Creator: Koutsourelakis, P S
Object Type: Report
System: The UNT Digital Library
Transport in a highly asymmetric binary fluid mixture (open access)

Transport in a highly asymmetric binary fluid mixture

We present molecular dynamics calculations of the thermal conductivity and viscosities of a model colloidal suspension with colloidal particles roughly one order of magnitude larger than the suspending liquid molecules. The results are compared with estimates based on the Enskog transport theory and effective medium theories for thermal and viscous transport. We also discuss the consequences of these results to some proposed mechanisms for thermal conduction in nanocolloidal suspensions.
Date: October 13, 2006
Creator: Bastea, S
Object Type: Article
System: The UNT Digital Library
Enhancement of REBUS-3/DIF3D for Whole-Core Neutronic Analysis of Prismatic Very High Temperature Reactor (VHTR). (open access)

Enhancement of REBUS-3/DIF3D for Whole-Core Neutronic Analysis of Prismatic Very High Temperature Reactor (VHTR).

Enhancements have been made to the REBUS-3/DIF3D code suite to facilitate its use for the design and analysis of prismatic Very High Temperature Reactors (VHTRs). A new cross section structure, using table-lookup, has been incorporated to account for cross section changes with burnup and fuel and moderator temperatures. For representing these cross section dependencies, three new modules have been developed using FORTRAN 90/95 object-oriented data structures and implemented within the REBUS-3 code system. These modules provide a cross section storage procedure, construct microscopic cross section data for all isotopes, and contain a single block of banded scattering data for efficient data management. Fission products other than I, Xe, Pm, and Sm, can be merged into a single lumped fission product to save storage space, memory, and computing time without sacrificing the REBUS-3 solution accuracy. A simple thermal-hydraulic (thermal-fluid) feedback model has been developed for prismatic VHTR cores and implemented in REBUS-3 for temperature feedback calculations. Axial conduction was neglected in the formulation because of its small magnitude compared to radial (planar) conduction. With the simple model, the average fuel and graphite temperatures are accurately estimated compared to reference STAR-CD results. The feedback module is currently operational for the non-equilibrium fuel …
Date: October 13, 2006
Creator: Lee, C. H.; Zhong, Z.; Taiwo, T. A.; Yang, W. S.; Khalil, H. S. & Smith, M. A.
Object Type: Report
System: The UNT Digital Library
The DEEP2 Galaxy Redshift Survey: AEGIS observations of a Dual AGNat z = 0.7 (open access)

The DEEP2 Galaxy Redshift Survey: AEGIS observations of a Dual AGNat z = 0.7

We present evidence for a dual Active Galactic Nucleus (AGN) within an early-type galaxy at z = 0.709 in the Extended Groth Strip. The galaxy lies on the red sequence, with absolute magnitude M{sub B} = -21.0 ( AB, w , with h = 0 0.7) and rest-frame color U - B = 1.38. Its optical spectrum shows strong, double-peaked [O III] emission lines and weak H{beta} emission, with Seyfert-like line ratios. The two narrow peaks are separate by 630 km s-1 in velocity and arise from two distinct regions, spatially resolved in the DEIMOS spectrum, with a projected physical separation of 1.2 kpc. HST/ACS imaging shows an early-type (E/S0) galaxy with hints of disturbed structure, consistent with the remnant of a dissipationless merger. Multiwavelength photometric information from the AEGIS consortium confirm the identification of a dust-obscured AGN in an early-type galaxy, with detections in X-ray, optical, infrared and radio wavebands. These data are most readily explained as a single galaxy harboring two AGN--the first such system to be observed in an otherwise typical early-type galaxy.
Date: October 13, 2006
Creator: Gerke1, Brian F.; Newman, Jeffrey A.; Lotz, Jennifer; Yan,Renbin; Barmby, P.; Coil, Alison L. et al.
Object Type: Article
System: The UNT Digital Library
Evaluation of Potential LSST Spatial Indexing Strategies (open access)

Evaluation of Potential LSST Spatial Indexing Strategies

The LSST requirement for producing alerts in near real-time, and the fact that generating an alert depends on knowing the history of light variations for a given sky position, both imply that the clustering information for all detections is available at any time during the survey. Therefore, any data structure describing clustering of detections in LSST needs to be continuously updated, even as new detections are arriving from the pipeline. We call this use case ''incremental clustering'', to reflect this continuous updating of clustering information. This document describes the evaluation results for several potential LSST incremental clustering strategies, using: (1) Neighbors table and zone optimization to store spatial clusters (a.k.a. Jim Grey's, or SDSS algorithm); (2) MySQL built-in R-tree implementation; (3) an external spatial index library which supports a query interface.
Date: October 13, 2006
Creator: Nikolaev, S; Abdulla, G & Matzke, R
Object Type: Report
System: The UNT Digital Library
ELECTROCHEMICAL STUDIES OF CARBON STEEL CORROSION IN HANFORD DOUBLE SHELL TANK (DST) WASTE (open access)

ELECTROCHEMICAL STUDIES OF CARBON STEEL CORROSION IN HANFORD DOUBLE SHELL TANK (DST) WASTE

This paper reports on the electrochemical scans for the supernatant of Hanford double-shell tank (DST) 241-SY-102 and the electrochemical scans for the bottom saltcake layer for Hanford DST 241-AZ-102. It further reports on the development of electrochemical test cells adapted to both sample volume and hot cell constraints.
Date: October 13, 2006
Creator: DUNCAN, J.B. & WINDISCH, C.F.
Object Type: Article
System: The UNT Digital Library
The All-Wavelength Extended Groth Strip International Survey(AEGIS) Data Sets (open access)

The All-Wavelength Extended Groth Strip International Survey(AEGIS) Data Sets

In this the first of a series of Letters, we present a description of the panchromatic data sets that have been acquired in the Extended Groth Strip region of the sky. Our survey, the All-wavelength Extended Groth Strip International Survey (AEGIS), is intended to study the physical properties and evolutionary processes of galaxies at z{approx}1. It includes the following deep, wide-field imaging data sets: Chandra/ACIS X-ray (0.5-10 keV), GALEX ultraviolet (1200-2500 Angstroms), CFHT/MegaCam Legacy Survey optical (3600-9000 Angstroms), CFHT/CFH12K optical (4500-9000 Angstroms), Hubble Space Telescope/ACS optical (4400-8500 Angstroms), Palomar/WIRC near-infrared (1.2-2.2 {micro}m), Spitzer/IRAC mid-infrared (3.6-8.0 {micro}m), Spitzer/MIPS far-infrared (24-70 {micro}m), and VLA radio continuum (6-20 cm). In addition, this region of the sky has been targeted for extensive spectroscopy using the DEIMOS spectrograph on the Keck II 10 m telescope. Our survey is compared to other large multiwavelength surveys in terms of depth and sky coverage.
Date: October 13, 2006
Creator: Davis, M.; Guhathakurta, P.; Konidaris, N. P.; Newman, J. A.; Ashby, M. L. N.; Biggs, A. D. et al.
Object Type: Article
System: The UNT Digital Library
Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 50, No. 161, Ed. 1 Friday, October 13, 2006 (open access)

Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 50, No. 161, Ed. 1 Friday, October 13, 2006

Weekly newspaper from Dell City, Texas that includes local, state, and national news along with advertising.
Date: October 13, 2006
Creator: Lynch, Mary Louise
Object Type: Newspaper
System: The Portal to Texas History
15th Street News (Midwest City, Okla.), Vol. 36, No. 7, Ed. 1 Friday, October 13, 2006 (open access)

15th Street News (Midwest City, Okla.), Vol. 36, No. 7, Ed. 1 Friday, October 13, 2006

Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date: October 13, 2006
Creator: Ray, Johnna
Object Type: Newspaper
System: The Gateway to Oklahoma History