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The Global Economic Crisis: Impact on Sub-Saharan Africa and Global Policy Responses
This report analyzes Africa's vulnerability to the global crisis and potential implications for economic growth, poverty alleviation, fiscal balances, and political stability. The report describes channels through which the crisis is affecting Africa, and provides information on international efforts to address the impact, including U.S. policies and those of multilateral institutions in which the United States plays a major role.
Date:
April 6, 2010
Creator:
Arieff, Alexis; Weiss, Martin A. & Jones, Vivian C.
Object Type:
Report
System:
The UNT Digital Library
Detection of Hohlraum Target Position for Laser Fusion Experiments
None
Date:
July 6, 2010
Creator:
Awwal, A. A.
Object Type:
Article
System:
The UNT Digital Library
Image Processing and Control of a Programmable Spatial Light Modulator for Optic Damage Protection
The heart of the National Ignition Facility is a megajoule-class laser system consisting of 192 beams used to drive inertial confinement fusion reactions. A recently installed system of programmable, liquid-crystal-based spatial light modulators adds the capability of arbitrarily shaping the spatial beam profiles in order to enhance operational flexibility. Its primary intended use is for introducing 'blocker' obscurations shadowing isolated flaws on downstream optical elements that would otherwise be damaged by high fluence laser illumination. Because an improperly shaped blocker pattern can lead to equipment damage, both the position and shape of the obscurations must be carefully verified prior to high-fluence operations. An automatic alignment algorithm is used to perform detection and estimation of the imposed blocker centroid positions compared to their intended locations. Furthermore, in order to minimize the spatially-varying nonlinear response of the device, a calibration of the local magnification is performed at multiple sub-image locations. In this paper, we describe the control and associated image processing of this device that helps to enhance the safety and longevity of the overall system.
Date:
December 6, 2010
Creator:
Awwal, A.; Leach, R.; Brunton, G.; Tse, E.; Matone, J. & Heebner, J.
Object Type:
Article
System:
The UNT Digital Library
TANK 40 FINAL SB5 CHEMICAL CHARACTERIZATION RESULTS PRIOR TO NP ADDITION
A sample of Sludge Batch 5 (SB5) was pulled from Tank 40 in order to obtain radionuclide inventory analyses necessary for compliance with the Waste Acceptance Product Specifications (WAPS). This sample was also analyzed for chemical composition including noble metals. Prior to radionuclide inventory analyses, a final sample of the H-canyon Np stream will be added to bound the Np addition anticipated for Tank 40. These analyses along with the WAPS radionuclide analyses will help define the composition of the sludge in Tank 40 that is currently being fed to DWPF as SB5. At the Savannah River National Laboratory (SRNL) the 3-L Tank 40 SB5 sample was transferred from the shipping container into a 4-L high density polyethylene vessel and solids allowed to settle overnight. Supernate was then siphoned off and circulated through the shipping container to complete the transfer of the sample. Following thorough mixing of the 3-L sample, a 239 g sub-sample was removed. This sub-sample was then utilized for all subsequent analytical samples. Eight separate aliquots of the slurry were digested, four with HNO{sub 3}/HCl (aqua regia) in sealed Teflon{reg_sign} vessels and four in Na{sub 2}O{sub 2} (alkali or peroxide fusion) using Zr crucibles. Due to the …
Date:
January 6, 2010
Creator:
Bannochie, C. & Click, D.
Object Type:
Report
System:
The UNT Digital Library
Nondestructive depth-resolved spectroscopic investigation of the heavily intermixed In2S3/Cu(In,Ga)Se2 interface
The chemical structure of the interface between a nominal In2S3 buffer and a Cu(In,Ga)Se2 (CIGSe) thin-film solar cell absorber was investigated by soft x-ray photoelectron and emission spectroscopy. We find a heavily intermixed, complex interface structure, in which Cu diffuses into (and Na through) the buffer layer, while the CIGSe absorber surface/interface region is partially sulfurized. Based on our spectroscopic analysis, a comprehensive picture of the chemical interface structure is proposed.
Date:
April 6, 2010
Creator:
Bar, Marcus; Barreau, N.; Couzinie-Devy, F.; Pookpanratana, S.; Klaer, J.; Blum, M. et al.
Object Type:
Article
System:
The UNT Digital Library
Oral History Interview with Albert Barton, November 6, 2010
The National Museum of the Pacific War presents an oral interview with Albert Barton. Barton joined the Navy and was trained as a radioman. He became a crewman on an Avenger torpedo bomber in October 1943. Barton flew off of the USS Mission Bay (CVE-59) and the USS Tripoli (CVE-64) and performed anti-submarine patrols in the North Atlantic. He describes how depth charges were dropped, the armament of the plane, and how they were trained to skip-bomb. Barton was then sent to the Pacific where he flew off of the USS Anzio (CVE-57) for the remainder of the war. He describes an incident where his plane had a failed landing and ended upside-down in the water. Barton had to break some glass in the cockpit to escape. He flew ground support missions over Okinawa. Barton discusses how the radio and radar functioned on his plane. He was discharged several months after the surrender.
Date:
November 6, 2010
Creator:
Barton, Albert
Object Type:
Text
System:
The Portal to Texas History
Oral History Interview with Albert Barton, November 6, 2010
The National Museum of the Pacific War presents an oral interview with Albert Barton. Barton joined the Navy and was trained as a radioman. He became a crewman on an Avenger torpedo bomber in October 1943. Barton flew off of the USS Mission Bay (CVE-59) and the USS Tripoli (CVE-64) and performed anti-submarine patrols in the North Atlantic. He describes how depth charges were dropped, the armament of the plane, and how they were trained to skip-bomb. Barton was then sent to the Pacific where he flew off of the USS Anzio (CVE-57) for the remainder of the war. He describes an incident where his plane had a failed landing and ended upside-down in the water. Barton had to break some glass in the cockpit to escape. He flew ground support missions over Okinawa. Barton discusses how the radio and radar functioned on his plane. He was discharged several months after the surrender.
Date:
November 6, 2010
Creator:
Barton, Albert
Object Type:
Sound
System:
The Portal to Texas History
FY2010 Supplemental for Wars, Disaster Assistance, Haiti Relief, and Other Programs
This report discusses the humanitarian relief funding, the Haiti FY2010 supplemental proposal, and other foreign economic and humanitarian assistance, as well as other domestic program funding.
Date:
August 6, 2010
Creator:
Belasco, Amy; Else, Daniel H.; Lindsay, Bruce R.; Margesson, Rhoda; Nakamura, Kennon H.; Taft-Morales, Maureen et al.
Object Type:
Report
System:
The UNT Digital Library
Dynamical Layer Decoupling in a Stripe-ordered, High T_c Superconductor
In the stripe-ordered state of a strongly-correlated two-dimensional electronic system, under a set of special circumstances, the superconducting condensate, like the magnetic order, can occur at a non-zero wave-vector corresponding to a spatial period double that of the charge order. In this case, the Josephson coupling between near neighbor planes, especially in a crystal with the special structure of La{sub 2-x}Ba{sub x}CuO{sub 4}, vanishes identically. We propose that this is the underlying cause of the dynamical decoupling of the layers recently observed in transport measurements at x = 1/8.
Date:
April 6, 2010
Creator:
Berg, E.
Object Type:
Article
System:
The UNT Digital Library
Intelligence Issues for Congress
This report discusses the efforts currently underway to improve coordination and encourage better analysis amongst the various agencies within the U.S. Intelligence Community, especially with regard to the ongoing and prominent issue of international terrorism. In particular, this report addresses the false intelligence regarding Iraqi weapons of mass destruction and the current efforts in Iraq and Iran in general.
Date:
August 6, 2010
Creator:
Best, Richard A., Jr.
Object Type:
Report
System:
The UNT Digital Library
Intelligence Issues for Congress
This report discusses the efforts currently underway to improve coordination and encourage better analysis amongst the various agencies within the U.S. Intelligence Community, especially with regard to the ongoing and prominent issue of international terrorism. In particular, this report addresses the false intelligence regarding Iraqi weapons of mass destruction and the current efforts in Iraq and Iran in general.
Date:
August 6, 2010
Creator:
Best, Richard A., Jr.
Object Type:
Report
System:
The UNT Digital Library
Doctoral Recital: 2010-03-06 - Marty Bishop, trumpet
Recital presented at the UNT College of Music Recital Hall in partial fulfillment of the Doctor of Musical Arts (DMA) degree.
Date:
March 6, 2010
Creator:
Bishop, Marty
Object Type:
Sound
System:
The UNT Digital Library
Self-consistent solution for proximity effect and Josephson current in ballistic graphene SNS Josephson junctions
We use a tight-binding Bogoliubov-de Gennes (BdG) formalism to self-consistently calculate the proximity effect, Josephson current, and local density of states in ballistic graphene SNS Josephson junctions. Both short and long junctions, with respect to the superconducting coherence length, are considered, as well as different doping levels of the graphene. We show that self-consistency does not notably change the current-phase relationship derived earlier for short junctions using the non-selfconsistent Dirac-BdG formalism but predict a significantly increased critical current with a stronger junction length dependence. In addition, we show that in junctions with no Fermi level mismatch between the N and S regions superconductivity persists even in the longest junctions we can investigate, indicating a diverging Ginzburg-Landau superconducting coherence length in the normal region.
Date:
April 6, 2010
Creator:
Black-Schaffer, Annica M.
Object Type:
Article
System:
The UNT Digital Library
Abortion and Family Planning-Related Provisions in U.S. Foreign Assistance Legislation and Policy
This report details legislation and policies that restrict or place requirements on U.S. funding of abortion or family planning activities abroad. The level and extent of federal funding for these activities is an ongoing and controversial issue in U.S. foreign assistance and will likely continue to be a point of contention during the 111th Congress.
Date:
August 6, 2010
Creator:
Blanchfield, Luisa
Object Type:
Report
System:
The UNT Digital Library
The United Nations Convention on the Rights of the Child: Background and Policy Issues
This report provides an overview of CRC's background and structure and examines evolving U.S. policy toward the Convention, including past and current Administration positions and congressional perspectives.
Date:
December 6, 2010
Creator:
Blanchfield, Luisa
Object Type:
Report
System:
The UNT Digital Library
Doctoral Recital: 2010-04-06 - Kurt Bonnett, trumpet
Recital presented at the UNT College of Music Main Auditorium in partial fulfillment of the Doctor of Musical Arts (DMA) degree.
Date:
April 6, 2010
Creator:
Bonnett, Kurt
Object Type:
Sound
System:
The UNT Digital Library
War in Afghanistan: Strategy, Military Operations, and Issues for Congress
The character of the war in Afghanistan evolved from a violent struggle against al Qaeda and its Taliban supporters to a multi-faceted counterinsurgency (COIN) effort. This report provides an examination of the war's background, context, and early execution; an analytical discussion of the COIN war to date, including strategy, organization, participation, and key facets of the effort including population security, advising the Afghan National Security Forces (ANSF), counter-narcotics, reconciliation, community outreach, and civil-military coordination; and an analysis of major strategic and operational issues and options that the 111th Congress may opt to consider.
Date:
May 6, 2010
Creator:
Bowman, Steve & Dale, Catherine
Object Type:
Report
System:
The UNT Digital Library
Biomass Feedstocks for Biopower: Background and Selected Issues
The production of bioenergy - renewable energy derived from biomass - could potentially increase national energy security, reduce greenhouse gas emissions, and contribute to rural economic growth. This report provides analyses of commonly discussed biomass feedstocks and their relative potential for power generation. Additional biopower issues - feedstock accessibility, the biomass power plant carbon-neutrality debate, and unintended consequences of legislative activities to promote bioenergy - are also discussed.
Date:
October 6, 2010
Creator:
Bracmort, Kelsi
Object Type:
Report
System:
The UNT Digital Library
Panhandle Progress (Panhandle, Tex.), Vol. 1, No. 17, Ed. 1 Wednesday, January 6, 2010
Weekly newspaper from Panhandle, Texas that includes local, state and national news along with advertising.
Date:
January 6, 2010
Creator:
Braidfoot, Margie
Object Type:
Newspaper
System:
The Portal to Texas History
Layed Perovskite PRBA0.5SR0.5CO205 as High Performance Cathode for Solid Oxide Fuels Using Photon Conducting Electrolyte
This paper discusses solid oxide fuel cells, proton conductors, layered perovskite and Cathodes.
Date:
May 6, 2010
Creator:
Brinkman, K.
Object Type:
Article
System:
The UNT Digital Library
The Stability and Electrical Properties of High Temperature Proton Conductors
The morphological and electrical properties of Ba{sub 1-x}Sr{sub x}Ce{sub 0.8}Y{sub 0.2}O{sub 3-{delta}} with x varying from 0 to 1 prepared by a modified Pechini method were investigated as potential high temperature proton conductors. Dense microstructures were achieved for all the samples upon sintering at 1500 C for 5 h. The phase structure analysis indicated that perovskite phase was formed for 0 {le} x {le} 0.2, while for x larger than 0.5, impurity phases of Sr{sub 2}CeO{sub 4} and Y{sub 2}O{sub 3} appeared. The tolerance to H{sub 2}O for the samples improved with the increase in Sr content when exposed to boiling water, while the electrical conductivity decreased from x = 0 to 1. However, the resistance to CO{sub 2} attack at elevated temperatures was not improved within the whole x range studied.
Date:
July 6, 2010
Creator:
Brinkman, K.
Object Type:
Article
System:
The UNT Digital Library
Development of Sensors and Sensing Technology for Hydrogen Fuel Cell Vehicle Applications
One related area of hydrogen fuel cell vehicle (FCV) development that cannot be overlooked is the anticipated requirement for new sensors for both the monitoring and control of the fuel cell's systems and for those devices that will be required for safety. Present day automobiles have dozens of sensors on-board including those for IC engine management/control, sensors for state-of-health monitoring/control of emissions systems, sensors for control of active safety systems, sensors for triggering passive safety systems, and sensors for more mundane tasks such as fluids level monitoring to name the more obvious. The number of sensors continues to grow every few years as a result of safety mandates but also in response to consumer demands for new conveniences and safety features. Some of these devices (e.g. yaw sensors for dynamic stability control systems or tire presure warning RF-based devices) may be used on fuel cell vehicles without any modification. However the use of hydrogen as a fuel will dictate the development of completely new technologies for such requirements as the detection of hydrogen leaks, sensors and systems to continuously monitor hydrogen fuel purity and protect the fuel cell stack from poisoning, and for the important, yet often taken for granted, …
Date:
January 6, 2010
Creator:
Brosha, E. L.; Sekhar, P. K.; Mukundan, R.; Williamson, T.; Garzon, F. H.; Woo, L. Y. et al.
Object Type:
Article
System:
The UNT Digital Library
Perry Daily Journal (Perry, Okla.), Vol. 118, No. 3, Ed. 1 Wednesday, January 6, 2010
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 6, 2010
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Perry Daily Journal (Perry, Okla.), Vol. 118, No. 26, Ed. 1 Saturday, February 6, 2010
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 6, 2010
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History