Medial thalamic 18-FDG uptake following inescapable shock correlates with subsequent learned helpless behavior (open access)

Medial thalamic 18-FDG uptake following inescapable shock correlates with subsequent learned helpless behavior

The learned helplessness paradigm has been repeatedly shown to correlate with neurobiological aspects of depression in humans. In this model, rodents are exposed inescapable foot-shock in order to reveal susceptibility to escape deficit, defined as 'learned helplessness' (LH). Few methods are available to probe the neurobiological aspects underlying the differences in susceptibility in the living animal, thus far being limited to studies examining regional neurochemical changes with microdialysis. With the widespread implementation of small animal neuroimaging methods, including positron emission tomography (PET), it is now possible to explore the living brain on a systems level to define regional changes that may correlate with vulnerability to stress. In this study, 12 wild type Sprague-Dawley rats were exposed to 40 minutes of inescapable foot-shock followed by metabolic imaging using 2-deoxy-2[{sup 18}F]fluoro-D-glucose (18-FDG) 1 hour later. The escape test was performed on these rats 48 hours later (to accommodate radiotracer decay), where they were given the opportunity to press a lever to shut off the shock. A region of interest (ROI) analysis was used to investigate potential correlations (Pearson Regression Coefficients) between regional 18-FDG uptake following inescapable shock and subsequent learned helpless behavior (time to finish the test; number of successful lever presses …
Date: December 6, 2009
Creator: Mirrione, M. M.; Schulz, D.; Dewey, S. L. & Henn, F. A.
Object Type: Article
System: The UNT Digital Library
Deriving Daytime Variables From the AmeriFlux Standard Eddy Covariance Data Set (open access)

Deriving Daytime Variables From the AmeriFlux Standard Eddy Covariance Data Set

A gap-filled, quality assessed eddy covariance dataset has recently become available for the AmeriFluxnetwork. This dataset uses standard processing and produces commonly used science variables. This shared dataset enables robust comparisons across different analyses. Of course, there are many remaining questions. One of those is how to define 'during the day' which is an important concept for many analyses. Some studies have used local time ?for example 9am to 5pm; others have used thresholds on photosynthetic active radiation (PAR). A related question is how to derive quantities such as the Bowen ratio. Most studies compute the ratio of the averages of the latent heat (LE) and sensible heat (H). In this study, we use different methods of defining 'during the day' for GPP, LE, and H. We evaluate the differences between methods in two ways. First, we look at a number of statistics of GPP. Second, we look at differences in the derived Bowen ratio. Our goal is not science per se, but rather informatics in support of the science.
Date: December 6, 2008
Creator: Ingen, Catharine van; Agarwal, Deborah A.; Humphrey, Marty & Li, Jie
Object Type: Article
System: The UNT Digital Library
Kuwait: Security, Reform, and U.S. Policy (open access)

Kuwait: Security, Reform, and U.S. Policy

None
Date: December 6, 2008
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Advanced Vehicle Technologies: Energy, Environment, and Development Issues (open access)

Advanced Vehicle Technologies: Energy, Environment, and Development Issues

This report discusses four major vehicle technologies — electric vehicles, hybrid electric vehicles, plug-in hybrids, and fuel cell vehicles — as well as advanced component technologies. Each technology is discussed in terms of cost, fueling and maintenance infrastructure, and performance.
Date: December 6, 2007
Creator: Yacobucci, Brent D.
Object Type: Report
System: The UNT Digital Library
Afghanistan: Narcotics and U.S. Policy (open access)

Afghanistan: Narcotics and U.S. Policy

This report provides current statistical information, profiles the Afghanistan narcotics trade's participants, explores linkages between narcotics, insecurity, and corruption, and reviews U.S. and international policy responses since late 2001. The report also considers ongoing policy debates regarding the counternarcotics role of coalition military forces, poppy eradication, alternative livelihoods, and funding issues for Congress.
Date: December 6, 2007
Creator: Blanchard, Christopher M.
Object Type: Report
System: The UNT Digital Library
The Alternative Minimum Tax for Individuals: Legislative Initiatives in the 110th Congress (open access)

The Alternative Minimum Tax for Individuals: Legislative Initiatives in the 110th Congress

This report addresses Legislative Initiatives in the 110th Congress of the Alternative Minimum Tax for Individuals.
Date: December 6, 2007
Creator: Esenwein, Gregg A. & Maguire, Steven
Object Type: Report
System: The UNT Digital Library
Analysis of the Proposed Tax Exclusion for Canceled Mortgage Debt Income (open access)

Analysis of the Proposed Tax Exclusion for Canceled Mortgage Debt Income

This report analyzes different tax exclusions and mortgage debt relief acts in an attempt to outline qualifications for mortgage and tax exclusions.
Date: December 6, 2007
Creator: Jackson, Pamela J. & Lunder, Erika
Object Type: Report
System: The UNT Digital Library
Application of exterior complex scaling to positron-hydrogencollisions including rearrangement (open access)

Application of exterior complex scaling to positron-hydrogencollisions including rearrangement

The first application of an exterior complex scaling method to an atomic scattering problem with distinct rearrangement channels is reported. Calculations are performed for positron-hydrogen collisions in an s-wave model employing an electron-positron potential of V{sub 12} = -(8+(r{sub 1}-r{sub 2}){sup 2}){sup 1/2}, using the time-independent propagating exterior complex scaling (PECS) method. This potential has the correct long-range Coulomb tail of the full problem and the results demonstrate that ECS-based methods can accurately calculate scattering, ionization and positronium formation cross sections in this three-body rearrangement collision.
Date: December 6, 2007
Creator: Bartlett, Philip L.; Stelbovics, Andris T.; Rescigno, Thomas N. & McCurdy, C. William
Object Type: Article
System: The UNT Digital Library
BOA, Beam Optics Analyzer A Particle-In-Cell Code (open access)

BOA, Beam Optics Analyzer A Particle-In-Cell Code

The program was tasked with implementing time dependent analysis of charges particles into an existing finite element code with adaptive meshing, called Beam Optics Analyzer (BOA). BOA was initially funded by a DOE Phase II program to use the finite element method with adaptive meshing to track particles in unstructured meshes. It uses modern programming techniques, state-of-the-art data structures, so that new methods, features and capabilities are easily added and maintained. This Phase II program was funded to implement plasma simulations in BOA and extend its capabilities to model thermal electrons, secondary emissions, self magnetic field and implement a more comprehensive post-processing and feature-rich GUI. The program was successful in implementing thermal electrons, secondary emissions, and self magnetic field calculations. The BOA GUI was also upgraded significantly, and CCR is receiving interest from the microwave tube and semiconductor equipment industry for the code. Implementation of PIC analysis was partially successful. Computational resource requirements for modeling more than 2000 particles begin to exceed the capability of most readily available computers. Modern plasma analysis typically requires modeling of approximately 2 million particles or more. The problem is that tracking many particles in an unstructured mesh that is adapting becomes inefficient. In particular …
Date: December 6, 2007
Creator: Bui, Thuc
Object Type: Report
System: The UNT Digital Library
Budget Enforcement Procedures: Senate’s Pay-As-You-Go (PAYGO) Rule (open access)

Budget Enforcement Procedures: Senate’s Pay-As-You-Go (PAYGO) Rule

This report discusses the senate PAYGO rule. It also points out how it applies only to legislation considered by the senate.
Date: December 6, 2007
Creator: Heniff, Bill, Jr.
Object Type: Report
System: The UNT Digital Library
Butt Joint Tool Commissioning (open access)

Butt Joint Tool Commissioning

ITER Central Solenoid uses butt joints for connecting the pancakes in the CS module. The principles of the butt joining of the CICC were developed by the JAPT during CSMC project. The difference between the CSMC butt joint and the CS butt joint is that the CS butt joint is an in-line joint, while the CSMC is a double joint through a hairpin jumper. The CS butt joint has to carry the hoop load. The straight length of the joint is only 320 mm, and the vacuum chamber around the joint has to have a split in the clamp shell. These requirements are challenging. Fig.1 presents a CSMC joint, and Fig.2 shows a CS butt joint. The butt joint procedure was verified and demonstrated. The tool is capable of achieving all specified parameters. The vacuum in the end was a little higher than the target, which is not critical and readily correctable. We consider, tentatively that the procedure is established. Unexpectedly, we discover significant temperature nonuniformity in the joint cross section, which is not formally a violation of the specs, but is a point of concern. All testing parameters are recorded for QA purposes. We plan to modify the butt …
Date: December 6, 2007
Creator: Martovetsky, N. N.
Object Type: Report
System: The UNT Digital Library
Chemical Demilitarization: Additional Management Actions Needed to Meet Key Performance Goals of DOD's Chemical Demilitarization Program (open access)

Chemical Demilitarization: Additional Management Actions Needed to Meet Key Performance Goals of DOD's Chemical Demilitarization Program

A letter report issued by the Government Accountability Office with an abstract that begins "Destruction of the nation's remaining stockpile of chemical weapons in a safe, efficient, and timely manner is essential to meet Chemical Weapons Convention treaty obligations and to reduce the risk of a potential catastrophic event. The Department of Defense (DOD) established the Chemical Demilitarization Program to manage the destruction of the remaining stockpile. GAO was asked to evaluate the (1) progress DOD and the Army have made in addressing GAO's prior recommendations to strengthen program management, (2) reasonableness of schedule milestones, (3) reliability of cost estimates, and (4) effectiveness of efforts to provide monetary incentives to the systems contractors. GAO reviewed relevant planning documents, schedules, cost estimates, and contracts; interviewed program and contractor officials; and visited chemical agent destruction sites."
Date: December 6, 2007
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
DOD Schools: Additional Reporting Could Improve Accountability for Academic Achievement of Students with Dyslexia (open access)

DOD Schools: Additional Reporting Could Improve Accountability for Academic Achievement of Students with Dyslexia

A letter report issued by the Government Accountability Office with an abstract that begins "Many of our nation's military and civilian personnel depend on Department of Defense (DOD) schools to meet their children's educational needs. These schools provide a range of educational services including programs for students with disabilities and those who struggle to read, some of whom may have a condition referred to as dyslexia. To determine how DOD supports students with dyslexia and how it used $3.2 million in funds designated to support them, GAO was asked to examine: (1) what professional development DOD provides its staff to support students with dyslexia and how the fiscal year 2004-to-2006 funds designated for this purpose were used, (2) what identification and instructional services DOD provides to students who may have dyslexia, and (3) how DOD assesses the academic achievement of students with disabilities, including dyslexia. To address these objectives, GAO conducted a survey of all school principals and interviewed agency officials, school personnel, and parents in six school districts."
Date: December 6, 2007
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
Effect of Twist Pitch in the Strands on the Saturation and Losses in the Nb3Sn Strands for the ITER TF CICC (open access)

Effect of Twist Pitch in the Strands on the Saturation and Losses in the Nb3Sn Strands for the ITER TF CICC

ITER TF coils will see a significant longitudinal magnetic field in the event of the plasma disruption. This abrupt change of magnetic fields results in the appearance of an additional electrical field in the strands. The mechanism of this electrical field is the induced currents that expel the flux from the strands. This effect was known since the late 1970's [1-3] and most of the details necessary for the analyses given in this report are presented in [4]. Let's assume for simplicity a zero transport current in the strand. When a longitudinal pulsed field is applied, the outer filaments will carry an induced current repelling the change of flux. The current density of this current is 'critical' in the simplification of Bean's critical state model, where superconducting transition is represented as j=j{sub c} at any non-zero electrical field and zero where the electrical field has not penetrated. In reality, since the current density is roughly logarithmic with the electrical field, E=E{sub c}*exp[(j-j{sub c})/jo], Bean's model is just a simplification, and current density is slightly nonuniform in the outer filament and more so for the interior strands. The inner portion of the filaments will carry a current of the opposite sign. …
Date: December 6, 2007
Creator: Martovetsky, N. N.
Object Type: Report
System: The UNT Digital Library
Evaluating Cumulative Ecosystem Response to Restoration Projects in the Columbia River Estuary, Annual Report 2006 (open access)

Evaluating Cumulative Ecosystem Response to Restoration Projects in the Columbia River Estuary, Annual Report 2006

This report is the third annual report of a six-year project to evaluate the cumulative effects of habitat restoration action in the Columbia River Estuary (CRE). The project is being conducted for the U.S. Army Corps of Engineers (Corps) by the Marine Sciences Laboratory of the Pacific Northwest National Laboratory, the Pt. Adams Biological Field Station of the National Marine Fisheries Service, and the Columbia River Estuary Study Taskforce. Measurement of the cumulative effects of ecological restoration projects in the Columbia River estuary is a formidable task because of the size and complexity of the estuarine landscape and the meta-populations of salmonids in the Columbia River basin. Despite the challenges presented by this system, developing and implementing appropriate indicators and methods to measure cumulative effects is the best way to enable estuary managers to track the overall effectiveness of investments in estuarine restoration projects. This project is developing methods to quantify the cumulative effects of multiple restoration activities in the CRE. The overall objectives of the 2006 study were to continue to develop techniques to assess cumulative effects, refine the standard monitoring protocols, and initiate development of an adaptive management system for Corps of Engineers’ habitat restoration monitoring efforts in …
Date: December 6, 2007
Creator: Johnson, Gary E.; Borde, Amy B.; Dawley, Earl; Diefenderfer, Heida L.; Ebberts, Blaine D.; Putman, Douglas A. et al.
Object Type: Report
System: The UNT Digital Library
Federal Land Ownership: Current Acquisition and Disposal Authorities (open access)

Federal Land Ownership: Current Acquisition and Disposal Authorities

None
Date: December 6, 2007
Creator: Gorte, Ross W. & Vincent, Carol Hardy
Object Type: Report
System: The UNT Digital Library
Form CJ-7, Annual Parole Survey: 2007 (open access)

Form CJ-7, Annual Parole Survey: 2007

Blank parole data survey containing a series of questions related to the parole population in a particular location, with instructions for filling out the survey.
Date: December 6, 2007
Creator: United States. Bureau of Justice Statistics.
Object Type: Text
System: The UNT Digital Library
Form CJ-8, Annual Probation Survey: 2007 (open access)

Form CJ-8, Annual Probation Survey: 2007

Blank probation data survey containing a series of questions related to the probationary population in a particular location, with instructions for filling out the survey.
Date: December 6, 2007
Creator: United States. Bureau of Justice Statistics.
Object Type: Text
System: The UNT Digital Library
GoMRC Website ‘Meta-analysis Report: Land-use and submerged aquatic vegetation change in the Gulf of Mexico’ (open access)

GoMRC Website ‘Meta-analysis Report: Land-use and submerged aquatic vegetation change in the Gulf of Mexico’

Over the past century, health and spatial extent of seagrasses has decreased dramatically in the Gulf of Mexico. While some of the changes can be explained by direct impacts to the seagrass beds, we hypothesize that changes in the land use in the watersheds can also be correlated with the decline of seagrasses. Through this meta-analysis, we researched historical and compared trends in seagrass populations and land use in five bays and their watersheds within the Gulf of Mexico: Mobile Bay, Perdido Bay, Tampa Bay, Charlotte Harbor, and Galveston Bay. Using both historical records and spatial datasets, we examined land use and seagrass trends in these five areas.
Date: December 6, 2007
Creator: Judd, Chaeli; Stefansson, Emily S. & Brushnahan, Heather
Object Type: Report
System: The UNT Digital Library
How Long Can the Defense Department Finance FY2008 Operations in Advance of Supplemental Appropriations? (open access)

How Long Can the Defense Department Finance FY2008 Operations in Advance of Supplemental Appropriations?

None
Date: December 6, 2007
Creator: Belasco, Amy; Daggett, Stephen & Towell, Pat
Object Type: Report
System: The UNT Digital Library
IEC International Standards Under Development For Radiation-Generating Devices (open access)

IEC International Standards Under Development For Radiation-Generating Devices

The International Electrotechnical Commission (IEC) is the leading and oldest global organization with over 100 years history of developing and publishing international standards for all electrical, electronic and related technologies, including radiation detection instrumentation. Subcommittee 45B 'Radiation Protection Instrumentation' of the IEC has recently started the development of two standards on radiation-generating devices. IEC 62463 'Radiation protection instrumentation--X-ray Systems for the Screening of Persons for Security and the Carrying of Illicit Items' is applicable to X-ray systems designed for screening people to detect if they are carrying objects such as weapons, explosives, chemical and biological agents and other concealed items that could be used for criminal purposes, e.g. terrorist use, drug smuggling, etc. IEC 62523 'Radiation protection instrumentation--Cargo/Vehicle radiographic inspection systems' applies to cargo/vehicle imaging inspection systems using accelerator produced X-ray or gamma radiation to obtain images of the screened objects (e.g. cargo containers, transport and passenger vehicles and railroad cars). The objective of both standards is to specify standard requirements and general characteristics and test procedures, as well as, radiation, electrical, environmental, mechanical, and safety requirements and to provide examples of acceptable methods to test these requirements. In particular the standards address the design requirements as they relate to …
Date: December 6, 2007
Creator: Voytchev, M; Radev, R; Chiaro, P; Thomson, I; Dray, C & Li, J
Object Type: Article
System: The UNT Digital Library
Indiana Humanities Council Request for the Indianapolis Energy Conversion Inst. For Phase I of the Indianapolis Energy Conservation Res Initiative also called the smartDESKTOP Initiative (open access)

Indiana Humanities Council Request for the Indianapolis Energy Conversion Inst. For Phase I of the Indianapolis Energy Conservation Res Initiative also called the smartDESKTOP Initiative

The smartDESKTOP Initiative at the Indiana Humanities Council received critical support in building and delivering a “digital desktop” for Indiana educators through the Department of Energy Grant—DE-FG02-06ER64282. During the project period September 2006 through October of 2007, the number of Indiana educators with accounts on the smartDESKTOP more than tripled from under 2,000 to more than 7,000 accounts. An external review of the project conducted for the purposes of understanding the impact of the service in Indiana schools revealed that the majority of respondents felt that using the smartDESKTOP did reduce the time they spent managing paper. The same study revealed the challenges of implementing a digital desktop meant to help teachers leverage technology to improve their teaching and ultimately student learning. The most significant outcome of this project is that the Indiana Department of Education expressed interest in assuming responsibility for sustaining this project. The transition of the smartDESKTOP to the Indiana Department of Education was effective on November 1, 2007.
Date: December 6, 2007
Creator: Keller, John B.
Object Type: Report
System: The UNT Digital Library
Major Leadership Election Contests In the Senate, 94th - 110th Congresses (open access)

Major Leadership Election Contests In the Senate, 94th - 110th Congresses

None
Date: December 6, 2007
Creator: unknown
Object Type: Report
System: The UNT Digital Library