The U.N. Convention on the Elimination of All Forms of Discrimination Against Women (CEDAW): Issues in the U.S. Ratification Debate (open access)

The U.N. Convention on the Elimination of All Forms of Discrimination Against Women (CEDAW): Issues in the U.S. Ratification Debate

This report provides an overview of the Convention on the Elimination of All Forms of Discrimination Against Women (CEDAW) and describes its background, objectives, and structure, including the role of the Convention's monitoring body, the CEDAW Committee. It examines U.S. policy and issues in the U.S. ratification debate, including the Convention's possible impact on U.S. sovereignty, its effectiveness in combating discrimination, and its role as an instrument of U.S. foreign policy.
Date: April 15, 2011
Creator: Blanchfield, Luisa
Object Type: Report
System: The UNT Digital Library
Recent Developments in Dynamic Transmission Electron Microscopy (open access)

Recent Developments in Dynamic Transmission Electron Microscopy

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Date: April 15, 2011
Creator: Browning, N D; Bonds, M A; Campbell, G H; Evans, J E; LaGrange, T; Jungjohann, K L et al.
Object Type: Article
System: The UNT Digital Library
Effects of Radiation from Fukushima Daiichi on the U.S. Marine Environment (open access)

Effects of Radiation from Fukushima Daiichi on the U.S. Marine Environment

The massive Tohoku earthquake and tsunami of March 11, 2011, caused extensive damage in northeastern Japan, including damage to the Fukushima Dai-ichi nuclear power installation, which resulted in the release of radiation. This report discusses concerns which have arisen about the potential effects of this released radiation on the U.S. marine environment and resources.
Date: April 15, 2011
Creator: Buck, Eugene H. & Upton, Harold F.
Object Type: Report
System: The UNT Digital Library
Asian Carp and the Great Lakes Region (open access)

Asian Carp and the Great Lakes Region

Four species of non-indigenous Asian carp are expanding their range in U.S. waterways, resulting in a variety of concerns and problems. This report details the environmental and economic threats from this invasion, as well as ways to combat the spread of Asian carp in U.S. water.
Date: April 15, 2011
Creator: Buck, Eugene H.; Upton, Harold F.; Stern, Charles V. & Brown, Cynthia
Object Type: Report
System: The UNT Digital Library
Use of immunomagnetic separation for the detection of Desulfovibrio vulgaris from environmental samples (open access)

Use of immunomagnetic separation for the detection of Desulfovibrio vulgaris from environmental samples

Immunomagnetic separation (IMS) has proved highly efficient for recovering microorganisms from heterogeneous samples. Current investigation targeted the separation of viable cells of the sulfate-reducing bacterium, Desulfovibrio vulgaris. Streptavidin-coupled paramagnetic beads and biotin labeled antibodies raised against surface antigens of this microorganism were used to capture D. vulgaris cells in both bioreactor grown laboratory samples and from extremely low-biomass environmental soil and subsurface drilling samples. Initial studies on detection, recovery efficiency and viability for IMS were performed with laboratory grown D. vulgaris cells using various cell densities. Efficiency of cell isolation and recovery (i.e., release of the microbial cells from the beads following separation) was followed by microscopic imaging and acridine orange direct counts (AODC). Excellent recovery efficiency encouraged the use of IMS to capture Desulfovibrio spp. cells from low-biomass environmental samples. The environmental samples were obtained from a radionuclide-contaminated site in Germany and the chromium (VI)-contaminated Hanford site, an ongoing bioremediation project of the U.S. Department of Energy. Field deployable IMS technology may greatly facilitate environmental sampling and bioremediation process monitoring and enable transcriptomics and proteomics/metabolomics-based studies directly on cells collected from the field.
Date: April 15, 2011
Creator: Chakraborty, R.; Hazen, T. C.; Joyner, D. C.; Kusel, K.; Singer, M. E.; Sitte, J. et al.
Object Type: Article
System: The UNT Digital Library
Shape-selective catalysts for Fischer-Tropsch chemistry : atomic layer deposition of active catalytic metals. Activity report : January 1, 2005 - September 30, 2005. (open access)

Shape-selective catalysts for Fischer-Tropsch chemistry : atomic layer deposition of active catalytic metals. Activity report : January 1, 2005 - September 30, 2005.

Argonne National Laboratory is carrying out a research program to create, prepare, and evaluate catalysts to promote Fischer-Tropsch (FT) chemistry - specifically, the reaction of hydrogen with carbon monoxide to form long-chain hydrocarbons. In addition to needing high activity, it is desirable that the catalysts have high selectivity and stability with respect to both mechanical strength and aging properties. The broad goal is to produce diesel fraction components and avoiding excess yields of both light hydrocarbons and heavy waxes. Originally the goal was to prepare shape-selective catalysts that would limit the formation of long-chain products and yet retain the active metal sites in a protected 'cage.' Such catalysts were prepared with silica-containing fractal cages. The activity was essentially the same as that of catalysts without the cages. We are currently awaiting follow-up experiments to determine the attrition strength of these catalysts. A second experimental stage was undertaken to prepare and evaluate active FT catalysts formed by atomic-layer deposition [ALD] of active components on supported membranes and particulate supports. The concept was that of depositing active metals (i.e. ruthenium, iron or cobalt) upon membranes with well defined flow channels of small diameter and length such that the catalytic activity and product …
Date: April 15, 2011
Creator: Cronauer, D. C. (Chemical Sciences and Engineering Division)
Object Type: Report
System: The UNT Digital Library
Effects of nitrogen additions on above- and belowground carbon dynamics in two tropical forests (open access)

Effects of nitrogen additions on above- and belowground carbon dynamics in two tropical forests

Anthropogenic nitrogen (N) deposition is increasing rapidly in tropical regions, adding N to ecosystems that often have high background N availability. Tropical forests play an important role in the global carbon (C) cycle, yet the effects of N deposition on C cycling in these ecosystems are poorly understood. We used a field N-fertilization experiment in lower and upper elevation tropical rain forests in Puerto Rico to explore the responses of above- and belowground C pools to N addition. As expected, tree stem growth and litterfall productivity did not respond to N fertilization in either of these Nrich forests, indicating a lack of N limitation to net primary productivity (NPP). In contrast, soil C concentrations increased significantly with N fertilization in both forests, leading to larger C stocks in fertilized plots. However, different soil C pools responded to N fertilization differently. Labile (low density) soil C fractions and live fine roots declined with fertilization, while mineral-associated soil C increased in both forests. Decreased soil CO2 fluxes in fertilized plots were correlated with smaller labile soil C pools in the lower elevation forest (R2 = 0.65, p\0.05), and with lower live fine root biomass in the upper elevation forest (R2 = 0.90, …
Date: April 15, 2011
Creator: Cusack, D.; Silver, W. L.; Torn, M. S. & McDowell, W. H.
Object Type: Article
System: The UNT Digital Library
Kenya: Current Conditions and the Challenges Ahead (open access)

Kenya: Current Conditions and the Challenges Ahead

This report discusses the current political conditions of Kenya, which has long been an important ally of the United States. The report focuses particularly on the December 2007 elections, which many international observers have declared as rigged and deeply flawed. The report also discusses violence that erupted once election results were announced, as well as U.S. efforts to urge Kenya toward election reforms.
Date: April 15, 2011
Creator: Dagne, Ted
Object Type: Report
System: The UNT Digital Library
Parallel Breadth-First Search on Distributed Memory Systems (open access)

Parallel Breadth-First Search on Distributed Memory Systems

Data-intensive, graph-based computations are pervasive in several scientific applications, and are known to to be quite challenging to implement on distributed memory systems. In this work, we explore the design space of parallel algorithms for Breadth-First Search (BFS), a key subroutine in several graph algorithms. We present two highly-tuned par- allel approaches for BFS on large parallel systems: a level-synchronous strategy that relies on a simple vertex-based partitioning of the graph, and a two-dimensional sparse matrix- partitioning-based approach that mitigates parallel commu- nication overhead. For both approaches, we also present hybrid versions with intra-node multithreading. Our novel hybrid two-dimensional algorithm reduces communication times by up to a factor of 3.5, relative to a common vertex based approach. Our experimental study identifies execu- tion regimes in which these approaches will be competitive, and we demonstrate extremely high performance on lead- ing distributed-memory parallel systems. For instance, for a 40,000-core parallel execution on Hopper, an AMD Magny- Cours based system, we achieve a BFS performance rate of 17.8 billion edge visits per second on an undirected graph of 4.3 billion vertices and 68.7 billion edges with skewed degree distribution.
Date: April 15, 2011
Creator: Division, Computational Research; Buluc, Aydin & Madduri, Kamesh
Object Type: Report
System: The UNT Digital Library
The Depreciating Dollar: Economic Effects and Policy Response (open access)

The Depreciating Dollar: Economic Effects and Policy Response

This report discusses the trend of depreciation of the dollar since 2002. This raises concern among some in Congress and the public that the dollar's decline is a symptom of broader economic problems, such as a weak economic recovery, rising public debt, and a diminished standing in the global economy. However, a falling currency is not always a problem, but possibly an element of economic adjustments that are, on balance, beneficial to the economy.
Date: April 15, 2011
Creator: Elwell, Craig K.
Object Type: Report
System: The UNT Digital Library
The Potential for Energy Retrofits within the City of Sacramento's Rental Housing Inspection Program (open access)

The Potential for Energy Retrofits within the City of Sacramento's Rental Housing Inspection Program

This report presents the results of an analysis performed by Pacific Northwest National Laboratory for the City of Sacramento--under the U.S. Department of Energy’s Energy Efficiency and Renewable Energy Office of Weatherization and Intergovernmental Projects Technical Assistance Program--to help determine the potential for incorporating energy efficiency standards into the City’s existing Rental Housing Inspection Program as part of Sacramento’s efforts to create a Climate Action Plan.
Date: April 15, 2011
Creator: Iverson, Megan M.; Sande, Susan & Britt, Michelle L.
Object Type: Report
System: The UNT Digital Library
Phase II Final Report Computer Optimization of Electron Guns (open access)

Phase II Final Report Computer Optimization of Electron Guns

This program implemented advanced computer optimization into an adaptive mesh, finite element, 3D, charged particle code. The routines can optimize electron gun performance to achieve a specified current, beam size, and perveance. It can also minimize beam ripple and electric field gradients. The magnetics optimization capability allows design of coil geometries and magnetic material configurations to achieve a specified axial magnetic field profile. The optimization control program, built into the charged particle code Beam Optics Analyzer (BOA) utilizes a 3D solid modeling package to modify geometry using design tables. Parameters within the graphical user interface (currents, voltages, etc.) can be directly modified within BOA. The program implemented advanced post processing capability for the optimization routines as well as the user. A Graphical User Interface allows the user to set up goal functions, select variables, establish ranges of variation, and define performance criteria. The optimization capability allowed development of a doubly convergent multiple beam gun that could not be designed using previous techniques.
Date: April 15, 2011
Creator: Ives, R. Lawrence; Bui, Thuc; Tran, Hien; Read, Michael; Attarian, Adam & Tallis, William
Object Type: Report
System: The UNT Digital Library
Afghanistan: Post-Taliban Governance, Security, and U.S. Policy (open access)

Afghanistan: Post-Taliban Governance, Security, and U.S. Policy

This report discusses the current political state of Afghanistan, focusing particularly on the influence of the Taliban and other militant groups and on the leadership of Afghan President Hamid Karzai. This report also discusses the U.S.-Afghanistan relationship, in both the short and long term, and U.S. efforts under the Obama Administration to provide military, reconstructive, and stabilization aid.
Date: April 15, 2011
Creator: Katzman, Kenneth
Object Type: Report
System: The UNT Digital Library
Validation and Comparison of Carbon Sequestration Project Cost Models with Project Cost Data Obtained from the Southwest Partnership (open access)

Validation and Comparison of Carbon Sequestration Project Cost Models with Project Cost Data Obtained from the Southwest Partnership

Obtaining formal quotes and engineering conceptual designs for carbon dioxide (CO{sub 2}) sequestration sites and facilities is costly and time-consuming. Frequently, when looking at potential locations, managers, engineers and scientists are confronted with multiple options, but do not have the expertise or the information required to quickly obtain a general estimate of what the costs will be without employing an engineering firm. Several models for carbon compression, transport and/or injection have been published that are designed to aid in determining the cost of sequestration projects. A number of these models are used in this study, including models by J. Ogden, MIT's Carbon Capture and Sequestration Technologies Program Model, the Environmental Protection Agency and others. This report uses the information and data available from several projects either completed, in progress, or conceptualized by the Southwest Regional Carbon Sequestration Partnership on Carbon Sequestration (SWP) to determine the best approach to estimate a project's cost. The data presented highlights calculated versus actual costs. This data is compared to the results obtained by applying several models for each of the individual projects with actual cost. It also offers methods to systematically apply the models to future projects of a similar scale. Last, the cost …
Date: April 15, 2011
Creator: Lee, Robert; Grigg, Reid & McPherson, Brian
Object Type: Report
System: The UNT Digital Library
Response of precipitation extremes to idealized global warming in an aqua-planet climate model: Towards robust projection across different horizontal resolutions (open access)

Response of precipitation extremes to idealized global warming in an aqua-planet climate model: Towards robust projection across different horizontal resolutions

Current climate models produce quite heterogeneous projections for the responses of precipitation extremes to future climate change. To help understand the range of projections from multimodel ensembles, a series of idealized 'aquaplanet' Atmospheric General Circulation Model (AGCM) runs have been performed with the Community Atmosphere Model CAM3. These runs have been analysed to identify the effects of horizontal resolution on precipitation extreme projections under two simple global warming scenarios. We adopt the aquaplanet framework for our simulations to remove any sensitivity to the spatial resolution of external inputs and to focus on the roles of model physics and dynamics. Results show that a uniform increase of sea surface temperature (SST) and an increase of low-to-high latitude SST gradient both lead to increase of precipitation and precipitation extremes for most latitudes. The perturbed SSTs generally have stronger impacts on precipitation extremes than on mean precipitation. Horizontal model resolution strongly affects the global warming signals in the extreme precipitation in tropical and subtropical regions but not in high latitude regions. This study illustrates that the effects of horizontal resolution have to be taken into account to develop more robust projections of precipitation extremes.
Date: April 15, 2011
Creator: Li, F.; Collins, W.D.; Wehner, M.F.; Williamson, D.L. & Olson, J.G.
Object Type: Article
System: The UNT Digital Library
Constitutive relationships for elastic deformation of clay rock: Data Analysis (open access)

Constitutive relationships for elastic deformation of clay rock: Data Analysis

Geological repositories have been considered a feasible option worldwide for storing high-level nuclear waste. Clay rock is one of the rock types under consideration for such purposes, because of its favorable features to prevent radionuclide transport from the repository. Coupled hydromechanical processes have an important impact on the performance of a clay repository, and establishing constitutive relationships for modeling such processes are essential. In this study, we propose several constitutive relationships for elastic deformation in indurated clay rocks based on three recently developed concepts. First, when applying Hooke's law in clay rocks, true strain (rock volume change divided by the current rock volume), rather than engineering strain (rock volume change divided by unstressed rock volume), should be used, except when the degree of deformation is very small. In the latter case, the two strains will be practically identical. Second, because of its inherent heterogeneity, clay rock can be divided into two parts, a hard part and a soft part, with the hard part subject to a relatively small degree of deformation compared with the soft part. Third, for swelling rock like clay, effective stress needs to be generalized to include an additional term resulting from the swelling process. To evaluate …
Date: April 15, 2011
Creator: Liu, H. H.; Rutqvist, J. & Birkholzer, J. T.
Object Type: Article
System: The UNT Digital Library
Wind Energy Education and Outreach Project (open access)

Wind Energy Education and Outreach Project

The purpose of Illinois State University’s wind project was to further the education and outreach of the university concerning wind energy. This project had three major components: to initiate and coordinate a Wind Working Group for the State of Illinois, to launch a Renewable Energy undergraduate program, and to develop the Center for Renewable Energy that will sustain the Illinois Wind Working Group and the undergraduate program.
Date: April 15, 2011
Creator: Loomis, David G.
Object Type: Report
System: The UNT Digital Library
Carcieri v. Salazar: The Secretary of the Interior May Not Acquire Trust Land for the Narragansett Indian Tribe Under 25 U.S.C. § 465 Because That Statute Applies to Tribes “Under Federal Jurisdiction” in 1934 (open access)

Carcieri v. Salazar: The Secretary of the Interior May Not Acquire Trust Land for the Narragansett Indian Tribe Under 25 U.S.C. § 465 Because That Statute Applies to Tribes “Under Federal Jurisdiction” in 1934

This report discusses the right of the Secretary of the Interior (SOI) to take Narragansett Indian Tribe land into trust. It looks at issues before the Supreme Court in the case of Carcieri v. Salazar (2009), and subsequent bills related to this case that have been introduced by Congress.
Date: April 15, 2011
Creator: Murphy, M. Maureen
Object Type: Report
System: The UNT Digital Library
Armenia, Azerbaijan, and Georgia: Political Developments and Implications for U.S. Interests (open access)

Armenia, Azerbaijan, and Georgia: Political Developments and Implications for U.S. Interests

This report discusses the history and political background of Armenia, Azerbaijan, and Georgia since breaking away from the former Soviet Union at the end of 1991. It looks at key issues for the 112th Congress including economies, energy, regional politics, local crime, and terrorism.
Date: April 15, 2011
Creator: Nichol, Jim
Object Type: Report
System: The UNT Digital Library
Navy Nuclear Aircraft Carrier (CVN) Homeporting at Mayport: Background and Issues for Congress (open access)

Navy Nuclear Aircraft Carrier (CVN) Homeporting at Mayport: Background and Issues for Congress

This report provides background information and issues for Congress on the Navy's proposal to homeport a nuclear-powered aircraft carrier (CVN) at Mayport, Florida. Transferring a CVN from Norfolk, Virginia, to Mayport would also shift the local economic activity associated with homeporting a CVN, which some sources estimate as being worth hundreds of millions of dollars per year.
Date: April 15, 2011
Creator: O'Rourke, Ronald
Object Type: Report
System: The UNT Digital Library
Final Report: Towards Optimal Petascale Simulations (TOPS), ER25785 (open access)

Final Report: Towards Optimal Petascale Simulations (TOPS), ER25785

Multiscale, multirate scientific and engineering applications in the SciDAC portfolio possess resolution requirements that are practically inexhaustible and demand execution on the highest-capability computers available, which will soon reach the petascale. While the variety of applications is enormous, their needs for mathematical software infrastructure are surprisingly coincident; moreover the chief bottleneck is often the solver. At their current scalability limits, many applications spend a vast majority of their operations in solvers, due to solver algorithmic complexity that is superlinear in the problem size, whereas other phases scale linearly. Furthermore, the solver may be the phase of the simulation with the poorest parallel scalability, due to intrinsic global dependencies. This project brings together the providers of some of the world’s most widely distributed, freely available, scalable solver software and focuses them on relieving this bottleneck for many specific applications within SciDAC, which are representative of many others outside. Solver software directly supported under TOPS includes: hypre, PETSc, SUNDIALS, SuperLU, TAO, and Trilinos. Transparent access is also provided to other solver software through the TOPS interface. The primary goals of TOPS are the development, testing, and dissemination of solver software, especially for systems governed by PDEs. Upon discretization, these systems possess mathematical …
Date: April 15, 2011
Creator: Reynolds, Daniel R.
Object Type: Report
System: The UNT Digital Library
Strategies for Low Carbon Growth In India: Industry and Non Residential Sectors (open access)

Strategies for Low Carbon Growth In India: Industry and Non Residential Sectors

This report analyzed the potential for increasing energy efficiency and reducing greenhouse gas emissions (GHGs) in the non-residential building and the industrial sectors in India. The first two sections describe the research and analysis supporting the establishment of baseline energy consumption using a bottom up approach for the non residential sector and for the industry sector respectively. The third section covers the explanation of a modeling framework where GHG emissions are projected according to a baseline scenario and alternative scenarios that account for the implementation of cleaner technology.
Date: April 15, 2011
Creator: Sathaye, Jayant; de la Rue du Can, Stephane; Iyer, Maithili; McNeil, Michael; Kramer, Klaas Jan; Roy, Joyashree et al.
Object Type: Report
System: The UNT Digital Library
82nd Texas Legislature, Regular Session, House Concurrent Resolution 64 (open access)

82nd Texas Legislature, Regular Session, House Concurrent Resolution 64

Concurrent resolution introduced by the Texas House of Representatives and Senate recognizing April 13, 2011, as Leadership Highland Lakes Day at the State Capitol.
Date: April 15, 2011
Creator: Texas. Legislature. House of Representatives.
Object Type: Legislative Document
System: The Portal to Texas History
82nd Texas Legislature, Regular Session, House Concurrent Resolution 65 (open access)

82nd Texas Legislature, Regular Session, House Concurrent Resolution 65

Concurrent resolution introduced by the Texas House of Representatives and Senate recognizing April 13, 2011, as Leadership Killeen Day at the State Capitol.
Date: April 15, 2011
Creator: Texas. Legislature. House of Representatives.
Object Type: Legislative Document
System: The Portal to Texas History