48 Matching Results

Results open in a new window/tab.

National Transportation Safety Board's Implementation of GAO Recommendations (open access)

National Transportation Safety Board's Implementation of GAO Recommendations

Correspondence issued by the Government Accountability Office with an abstract that begins ""
Date: January 6, 2012
Creator: United States. Government Accountability Office.
Object Type: Text
System: The UNT Digital Library
The Greensheet (Houston, Tex.), Vol. 42, No. 586, Ed. 1 Friday, January 6, 2012 (open access)

The Greensheet (Houston, Tex.), Vol. 42, No. 586, Ed. 1 Friday, January 6, 2012

Free weekly newspaper that includes business and classified advertising.
Date: January 6, 2012
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
The Greensheet (Houston, Tex.), Vol. 42, No. 588, Ed. 1 Friday, January 6, 2012 (open access)

The Greensheet (Houston, Tex.), Vol. 42, No. 588, Ed. 1 Friday, January 6, 2012

Free weekly newspaper that includes business and classified advertising.
Date: January 6, 2012
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Dallas Voice (Dallas, Tex.), Vol. 28, No. 34, Ed. 1 Friday, January 6, 2012 (open access)

Dallas Voice (Dallas, Tex.), Vol. 28, No. 34, Ed. 1 Friday, January 6, 2012

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: January 6, 2012
Creator: Nash, Tammye
Object Type: Newspaper
System: The UNT Digital Library
Social Security: Substantial Gainful Activity for the Blind (open access)

Social Security: Substantial Gainful Activity for the Blind

None
Date: January 6, 2012
Creator: unknown
Object Type: Report
System: The UNT Digital Library
A Proof-of-Principle Echo-enabled Harmonic Generation Free Electron Laser Experiment at SLAC (open access)

A Proof-of-Principle Echo-enabled Harmonic Generation Free Electron Laser Experiment at SLAC

With the advent of X-ray Free Electron Lasers (FELs), new methods have been developed to extend capabilities at short wavelengths beyond Self-Amplified Spontaneous Emission (SASE). In particular, seeding of a FEL allows for temporal control of the radiation pulse and increases the peak brightness by orders of magnitude. Most recently, Gennady Stupakov and colleagues at SLAC proposed a new technique: Echo-Enabled Harmonic Generation (EEHG). Here a laser microbunches the beam in an undulator and the beam is sheared in a chicane. This process is repeated with a second laser, undulator and chicane. The interplay between these allows a seeding of the X-ray laser up to the 100th harmonic of the first laser. After introducing the physics of FELs and the EEHG seeding technique, we describe contributions to the experimental effort. We will present detailed studies of the experiment including the choice of parameters and their optimization, the emittance effect, spontaneous emission in the undulators, the second laser phase effect, and measurements of the jitter between RF stations. Finally, the status and preliminary results of the Echo-7 experiment will be outlined.
Date: January 6, 2012
Creator: Pernet, Pierre-Louis
Object Type: Thesis or Dissertation
System: The UNT Digital Library
The Greensheet (Houston, Tex.), Vol. 42, No. 587, Ed. 1 Friday, January 6, 2012 (open access)

The Greensheet (Houston, Tex.), Vol. 42, No. 587, Ed. 1 Friday, January 6, 2012

Free weekly newspaper that includes business and classified advertising.
Date: January 6, 2012
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
The Celina Record (Celina, Tex.), Vol. 110, No. 37, Ed. 1 Friday, January 6, 2012 (open access)

The Celina Record (Celina, Tex.), Vol. 110, No. 37, Ed. 1 Friday, January 6, 2012

Weekly newspaper from Celina, Texas that includes local, state, and national news along with advertising.
Date: January 6, 2012
Creator: Mann, Rick
Object Type: Newspaper
System: The Portal to Texas History
Ticket to Work and Self-Sufficiency Program: Overview and Current Issues (open access)

Ticket to Work and Self-Sufficiency Program: Overview and Current Issues

This report begins with an explanation of the various Ticket to Work provisions and provides an analysis of program performance and return-to-work barriers encountered by ticket holders and ENs. The report concludes with a discussion of program-related issues that may be of interest to Congress.
Date: January 6, 2012
Creator: Moulta-Ali, Umar
Object Type: Report
System: The UNT Digital Library
Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 56, No. 8, Ed. 1 Friday, January 6, 2012 (open access)

Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 56, No. 8, Ed. 1 Friday, January 6, 2012

Weekly newspaper from Dell City, Texas that includes local, state, and national news along with advertising.
Date: January 6, 2012
Creator: Stuart, Andrew
Object Type: Newspaper
System: The Portal to Texas History
Sweetwater Reporter (Sweetwater, Tex.), Vol. 113, No. 352, Ed. 1 Friday, January 6, 2012 (open access)

Sweetwater Reporter (Sweetwater, Tex.), Vol. 113, No. 352, Ed. 1 Friday, January 6, 2012

Daily newspaper from Sweetwater, Texas that includes local, state, and national news along with advertising.
Date: January 6, 2012
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Texas Register, Volume 37, Number 1, Pages 1-84, January 6, 2012 (open access)

Texas Register, Volume 37, Number 1, Pages 1-84, January 6, 2012

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: January 6, 2012
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Pay Equity Legislation (open access)

Pay Equity Legislation

None
Date: January 6, 2012
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Exploration of Optimization Options for Increasing Performance of a GPU Implementation of a Three-dimensional Bilateral Filter (open access)

Exploration of Optimization Options for Increasing Performance of a GPU Implementation of a Three-dimensional Bilateral Filter

This report explores using GPUs as a platform for performing high performance medical image data processing, specifically smoothing using a 3D bilateral filter, which performs anisotropic, edge-preserving smoothing. The algorithm consists of a running a specialized 3D convolution kernel over a source volume to produce an output volume. Overall, our objective is to understand what algorithmic design choices and configuration options lead to optimal performance of this algorithm on the GPU. We explore the performance impact of using different memory access patterns, of using different types of device/on-chip memories, of using strictly aligned and unaligned memory, and of varying the size/shape of thread blocks. Our results reveal optimal configuration parameters for our algorithm when executed sample 3D medical data set, and show performance gains ranging from 30x to over 200x as compared to a single-threaded CPU implementation.
Date: January 6, 2012
Creator: Bethel, E. Wes & Bethel, E. Wes
Object Type: Report
System: The UNT Digital Library
INVESTIGATION OF PLUTONIUM AND URANIUM UPTAKE INTO MCU SOLVENT AND NEXT GENERATION SOLVENT (open access)

INVESTIGATION OF PLUTONIUM AND URANIUM UPTAKE INTO MCU SOLVENT AND NEXT GENERATION SOLVENT

At the request of the Savannah River Remediation (SRR) customer, the Savannah River National Laboratory (SRNL) examined the plutonium (Pu) and uranium (U) uptake into the Next Generation Solvent (NGS) that will be used at the Salt Waste Processing Facility (SWPF). SRNL examined archived samples of solvent used in Extraction-Scrub-Strip (ESS) tests, as well as samples from new tests designed explicitly to examine the Pu and U uptake. Direct radiocounting for Pu and U provided the best results. Using the radiocounting results, we found that in all cases there were <3.41E-12 g Pu/g of NGS and <1.17E-05 g U/g of NGS in multiple samples, even after extended contact times and high aqueous:organic volume phase ratios. These values are conservative as they do not allow for release or removal of the actinides by scrub, strip, or solvent wash processes. The values do not account for extended use or any increase that may occur due to radiolytic damage of the solvent.
Date: January 6, 2012
Creator: Peters, T. & Fink, S.
Object Type: Report
System: The UNT Digital Library
An Examination of Temporal Trends in Electricity Reliability Based on Reports from U.S. Electric Utilities (open access)

An Examination of Temporal Trends in Electricity Reliability Based on Reports from U.S. Electric Utilities

Since the 1960s, the U.S. electric power system has experienced a major blackout about once every 10 years. Each has been a vivid reminder of the importance society places on the continuous availability of electricity and has led to calls for changes to enhance reliability. At the root of these calls are judgments about what reliability is worth and how much should be paid to ensure it. In principle, comprehensive information on the actual reliability of the electric power system and on how proposed changes would affect reliability ought to help inform these judgments. Yet, comprehensive, national-scale information on the reliability of the U.S. electric power system is lacking. This report helps to address this information gap by assessing trends in U.S. electricity reliability based on information reported by electric utilities on power interruptions experienced by their customers. Our research augments prior investigations, which focused only on power interruptions originating in the bulk power system, by considering interruptions originating both from the bulk power system and from within local distribution systems. Our research also accounts for differences among utility reliability reporting practices by employing statistical techniques that remove the influence of these differences on the trends that we identify. The …
Date: January 6, 2012
Creator: Eto, Joseph H.; LaCommare, Kristina Hamachi; Larsen, Peter; Todd, Annika & Fisher, Emily
Object Type: Report
System: The UNT Digital Library
Gamma-ray and Radio Properties of Six Pulsars Detected by the Fermi Large Area Telescope (open access)

Gamma-ray and Radio Properties of Six Pulsars Detected by the Fermi Large Area Telescope

None
Date: January 6, 2012
Creator: Weltevrede, P.; Abdo, A. A.; Ackermann, M.; Ajello, M.; Axelsson, M.; Baldini, L. et al.
Object Type: Article
System: The UNT Digital Library
Business Investment and Employment Tax Incentives to Stimulate the Economy (open access)

Business Investment and Employment Tax Incentives to Stimulate the Economy

This report consists of business investment and employment tax incentives to stimulate the economy.
Date: January 6, 2012
Creator: Hungerford, Thomas L. & Gravelle, Jane G.
Object Type: Report
System: The UNT Digital Library
Primer on Disability Benefits: Social Security Disability Insurance (SSDI) and Supplemental Security Income (SSI) (open access)

Primer on Disability Benefits: Social Security Disability Insurance (SSDI) and Supplemental Security Income (SSI)

None
Date: January 6, 2012
Creator: unknown
Object Type: Report
System: The UNT Digital Library
U.S. Assistance Programs in China (open access)

U.S. Assistance Programs in China

This report examines U.S. foreign assistance activities in the People's Republic of China (PRC), including U.S. Department of State and U.S. Agency for International Development (USAID) programming, foreign operations appropriations, policy history, and legislative background. International programs supported by U.S. departments and agencies other than the Department of State and USAID are not covered in this report.
Date: January 6, 2012
Creator: Lum, Thomas
Object Type: Report
System: The UNT Digital Library
Sex Discrimination and the United States Supreme Court: Developments in the Law (open access)

Sex Discrimination and the United States Supreme Court: Developments in the Law

None
Date: January 6, 2012
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Navy Ship Names: Background for Congress (open access)

Navy Ship Names: Background for Congress

None
Date: January 6, 2012
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Social Security: The Trust Fund (open access)

Social Security: The Trust Fund

None
Date: January 6, 2012
Creator: unknown
Object Type: Report
System: The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 112, No. 194, Ed. 1 Friday, January 6, 2012 (open access)

The Altus Times (Altus, Okla.), Vol. 112, No. 194, Ed. 1 Friday, January 6, 2012

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: January 6, 2012
Creator: Bush, Michael
Object Type: Newspaper
System: The Gateway to Oklahoma History