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13.2 nm Table-Top Inspection Microscope for Extreme Ultraviolet Lithography Mask Defect Characterization

Description: We report on a reflection microscope that operates at 13.2-nm wavelength with a spatial resolution of 55{+-}3 nm. The microscope uses a table-top EUV laser to acquire images of photolithography masks in 20 seconds.
Date: April 7, 2009
Creator: Brizuela, F.; Wang, Y.; Brewer, C.; Pedaci, F.; Chao, W.; Anderson, E. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

2010 Census: Census Bureau Continues to Make Progress in Mitigating Risks to a Successful Enumeration, but Still Faces Various Challenges

Description: Testimony issued by the Government Accountability Office with an abstract that begins "The decennial census is a constitutionally-mandated activity that produces data used to apportion congressional seats, redraw congressional districts, and help allocate billions of dollars in federal assistance. In March 2008, GAO designated the 2010 Census a high-risk area in part because of information technology (IT) shortcomings. The U.S. Census Bureau (Bureau) has since strengthened its risk management e… more
Date: October 7, 2009
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

5000 groove/mm multilayer-coated blazed grating with 33percent efficiency in the 3rd order in the EUV wavelength range

Description: We report on recent progress in developing diffraction gratings which can potentially provide extremely high spectral resolution of 105-106 in the EUV and soft x-ray photon energy ranges. Such a grating was fabricated by deposition of a multilayer on a substrate which consists ofa 6-degree blazed grating with a high groove density. The fabrication of the substrate gratings was based on scanning interference lithography and anisotropic wet etch of silicon single crystals. The optimized fabricati… more
Date: July 7, 2009
Creator: Lawrence Berkeley National Laboratory. Advanced Light Source.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
captions transcript

[5th Annual Weekend Festival of Black Dance Master Class 1]

Description: Video recording from The Black Academy of Arts and Letters recorded during their 5th Annual Weekend Festival of Black Dance held on February 6-7th, 2009. The footage shows a dance workshop being held on the Naomi Bruton main stage. The participants vary in age and wear casual athleisure clothing.
Date: February 7, 2009
Duration: 2 hours 40 seconds
Creator: King, Curtis
Item Type: Refine your search to only Video
Location: 32.774281 -96.797546
Partner: UNT Libraries Special Collections
captions transcript

[5th Annual Weekend Festival of Black Dance Master Class 2]

Description: Video recording from The Black Academy of Arts and Letters recorded during their 5th Annual Weekend Festival of Black Dance held on February 6-7th, 2009. The footage shows a dance workshop being held on the Naomi Bruton main stage. The participants vary in age and wear casual athleisure clothing.
Date: February 7, 2009
Duration: 2 hours 40 seconds
Creator: King, Curtis
Item Type: Refine your search to only Video
Location: 32.774281 -96.797546
Partner: UNT Libraries Special Collections
captions transcript

[5th Annual Weekend Festival of Black Dance performance 2 of 2]

Description: Video recording from The Black Academy of Arts and Letters recorded during the 5th annual Weekend Festival of Black Dance live performance held on February 7th, 2009 at the Naomi Bruton Theatre. The footage shows dancers performing in a contemporary style to a gospel/ soul soundtrack.
Date: February 7, 2009
Duration: 9 minutes 27 seconds
Item Type: Refine your search to only Video
Location: 32.774281 -96.797546
Partner: UNT Libraries Special Collections
open access

ACRF Instrumentation Status and Information April 2009

Description: The purpose of this report is to provide a concise but comprehensive overview of Atmospheric Radiation Measurement Climate Research Facility instrumentation status. The report is divided into the following five sections: (1) new instrumentation in the process of being acquired and deployed, (2) field campaigns, (3) existing instrumentation and progress on improvements or upgrades, (4) proposed future instrumentation, and (5) Small Business Innovation Research instrument development.
Date: May 7, 2009
Creator: Voyles, JW
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Added Value of Reliability to a Microgrid: Simulations of Three California Buildings

Description: The Distributed Energy Resources Customer Adoption Model is used to estimate the value an Oakland nursing home, a Riverside high school, and a Sunnyvale data center would need to put on higher electricity service reliability for them to adopt a Consortium for Electric Reliability Technology Solutions Microgrid (CM) based on economics alone. A fraction of each building's load is deemed critical based on its mission, and the added cost of CM capability to meet it added to on-site generation optio… more
Date: May 7, 2009
Creator: Marnay, Chris; Lai, Judy; Stadler, Michael & Siddiqui, Afzal
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Advanced Gate Drive for the SNS High Voltage Converter Modulator

Description: SLAC National Accelerator Laboratory is developing a next generation H-bridge switch plate [1], a critical component of the SNS High Voltage Converter Modulator [2]. As part of that effort, a new IGBT gate driver has been developed. The drivers are an integral part of the switch plate, which are essential to ensuring fault-tolerant, high-performance operation of the modulator. The redesigned driver improves upon the existing gate drive in several ways. The new gate driver has improved fault det… more
Date: May 7, 2009
Creator: Nguyen, M. N.; Burkhart, C.; Kemp, M. A. & Anderson, D. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Advanced Water-Gas Shift Membrane Reactor

Description: The overall objectives for this project were: (1) to identify a suitable PdCu tri-metallic alloy membrane with high stability and commercially relevant hydrogen permeation in the presence of trace amounts of carbon monoxide and sulfur; and (2) to identify and synthesize a water gas shift catalyst with a high operating life that is sulfur and chlorine tolerant at low concentrations of these impurities. This work successfully achieved the first project objective to identify a suitable PdCu tri-me… more
Date: January 7, 2009
Creator: Emerson, Sean; Vanderspurt, Thomas; Opalka, Susanne; Radhakrishnan, Rakesh & Willigan, Rhonda
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Afghanistan: Narcotics and U.S. Policy

Description: 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: October 7, 2009
Creator: Blanchard, Christopher M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Agricultural Conservation Issues in the 111th Congress

Description: This report focuses on the discussions in the 111th Congress on the 2008 farm bill. Moreover, the report details that debate has shifted to the off-farm impact the bill has. The report also discusses the budgetary issues surrounding the farm bill that the 111th Congress was presented with.
Date: July 7, 2009
Creator: Stubbs, Megan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Air Force C-17 Aircraft Procurement: Background and Issues for Congress

Description: This report provides background information on the C-17 Aircraft program, including previous appropriations, related programs, and issues for Congress. The primary issue for Congress in FY2010 is whether to procure additional C-17s. An additional issue is whether to pass legislation relating to the airlift aircraft force structure. Congress's decisions on these issues could affect DOD capabilities and funding requirements and the U.S. military aircraft industrial base.
Date: October 7, 2009
Creator: O'Rourke, Ronald
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Alert Systems for Missing Adults in Eleven States: Background and Issues for Congress

Description: This report discusses the emerging development of nationwide alert systems to recover missing adults, such as those with mental impairment (such as Alzheimer's disease), developmental disabilities, or suicidal tendencies. This report provides an overview of such alert systems in 11 states: Colorado, Delaware, Florida, Georgia, Kentucky, North Carolina, Ohio, Oklahoma, Rhode Island, Texas, and Virginia. This report also provides a discussion of issues for Congress to consider with respect to the… more
Date: May 7, 2009
Creator: Fernandes, Adrienne L. & Colello, Kirsten J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

America Competes Act: NIST Applied Some Safeguards in Obtaining Expert Services, but Additional Direction from Congress Is Needed

Description: A letter report issued by the Government Accountability Office with an abstract that begins "The America COMPETES Act gave the National Institute of Standards and Technology (NIST), within the Department of Commerce, the authority, through 2010, to obtain the temporary services of up to 200 experts or consultants per year, but did not specify how the agency should acquire these services. NIST has used this authority to award personal services contracts to obtain the services of individuals. The… more
Date: August 7, 2009
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Anomalies and Discrete Chiral Symmetries

Description: The quantum anomaly that breaks the U(1) axial symmetry of massless multi-flavored QCD leaves behind a discrete flavor-singlet chiral invariance. With massive quarks, this residual symmetry has a close connection with the strong CP-violating parameter theta. One result is that if the lightest quarks are degenerate, then a first order transition will occur when theta passes through pi. The resulting framework helps clarify when the rooting prescription for extrapolating in the number of flavors … more
Date: September 7, 2009
Creator: Creutz, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Assessing Treasury's Strategy: Six Months of TARP

Description: April report of the U.S. Congressional Oversight Panel describing their activities and findings regarding the federal government's current strategy in mitigating the effects of the 2007-2008 financial crisis through the Troubled Asset Relief Fund (TARP).
Date: April 7, 2009
Creator: United States. Congressional Oversight Panel.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

ATPA Renewal: Background and Issues

Description: This report outlines the various aspects of the Andean Trade Preference Act (ATPA), including significant dates and modifications. The ATPA extends special duty treatment to certain U.S. imports from Bolivia, Colombia, Ecuador, and Peru that meet domestic content and other requirements. The purpose of ATPA is to promote economic growth in the Andean region and to encourage a shift away from dependence on illegal drugs by supporting legitimate economic activities.
Date: August 7, 2009
Creator: Villarreal, M. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Aviation Security: DHS and TSA Have Researched, Developed, and Begun Deploying Passenger Checkpoint Screening Technologies, but Continue to Face Challenges

Description: A letter report issued by the Government Accountability Office with an abstract that begins "Since fiscal year 2002, the Transportation Security Administration (TSA) and the Department of Homeland Security (DHS) have invested over $795 million in technologies to screen passengers at airport checkpoints. The DHS Science and Technology Directorate (S&T) is responsible, with TSA, for researching and developing technologies, and TSA deploys them. GAO was asked to evaluate the extent to which (1) TS… more
Date: October 7, 2009
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

BaBrI:Eu2 + , a new bright scintillator

Description: The scintillation properties of BaBrI:Eu2+ are reported. Crystals were produced by the vertical Bridgman technique in a sealed quartz ampoule. Excellent scintillation properties were measured. A light yield of 81,0007 +- 3000 photons per MeV (ph/MeV) of absorbed gamma-ray energy was measured. An energy resolution (FWHM over peak position) of 4.870.5percent was observed for the 662keV full absorption peak. Pulsed X-ray luminescence measurements show two exponential decay components of 297 and 48… more
Date: November 7, 2009
Creator: Bourret-Courchesne, E.D.; Bizarri, G.; Hanrahan, S.M.; Gundiah, G.; Yan, Z. & Derenzo, S.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Binary pseudo-random gratings and arrays for calibration of the modulation transfer function of surface profilometers: recent developments

Description: The major problem of measurement of a power spectral density (PSD) distribution of the surface heights with surface profilometers arises due to the unknown Modulation Transfer Function (MTF) of the instruments. The MTF tends to distort the PSD at higher spatial frequencies. It has been suggested [Proc. SPIE 7077-7, (2007), Opt. Eng. 47 (7), 073602-1-5 (2008)] that the instrumental MTF of a surface profiler can be precisely measured using standard test surfaces based on binary pseudo-random (BPR… more
Date: July 7, 2009
Creator: Barber, Samuel K.; Soldate, Paul; Anderson, Erik H.; Cambie, Rossana; Marchesini, Stefano; McKinney, Wanye R. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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