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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: December 10, 2006
Creator: Blanchard, Christopher M.
Partner: UNT Libraries Government Documents Department

Multiscale Stochastic Simulation and Modeling

Description: Acceleration driven instabilities of fluid mixing layers include the classical cases of Rayleigh-Taylor instability, driven by a steady acceleration and Richtmyer-Meshkov instability, driven by an impulsive acceleration. Our program starts with high resolution methods of numerical simulation of two (or more) distinct fluids, continues with analytic analysis of these solutions, and the derivation of averaged equations. A striking achievement has been the systematic agreement we obtained between simulation and experiment by using a high resolution numerical method and improved physical modeling, with surface tension. Our study is accompanies by analysis using stochastic modeling and averaged equations for the multiphase problem. We have quantified the error and uncertainty using statistical modeling methods.
Date: January 10, 2006
Creator: Glimm, James & Li, Xiaolin
Partner: UNT Libraries Government Documents Department

FINAL REPORT: DOE-FG03-95ER25250

Description: The research conducted in this project concerns the geometry of extremal surfaces, embedded minimal surfaces in particular. The methods include geometric analysis, computational simulation, mathematical visualization and software development. Minimal surface research stands at the intersection of partial differential equations, calculus of variations, complex function theory and topology. Advances in this area are often---as is the case with our research---tied to the development and implementation of computational methods and tools of mathematical visualization. Understanding the structure of the space of minimal surfaces has been important in applications from cosmology to structural engineering, as well as other applied areas including polymer physics. The subject has benefited from the discovery of new examples by the use of computation, examples far beyond the range current theoretical construction techniques. Not only are these surfaces important for the understanding of equilibrium morphology via inter-material dividing surfaces, they arise in the study of grain boundaries and dislocations. These same examples are in turn signposts for the further theoretical development in mathematics. This research project has made fundamental advances in the study of equilibrium interfaces. Carrying on the parent project that was based at the University of Massachusetts, we have: Proved the existence of large families of periodic minimal surfaces that serve as models for compound polymers. Developed software to simulate the transmission electron microscopy of the nanostructure of block copolymers, and in the understanding of materials whose structure was previously not known. Pioneered the use of numerical approximation and image simulation for minimal and CMC surfaces in the theoretical investigation of these variationally define equilibrium interfaces. Developed and maintained an archival site and model libraries This website was one of the first such sites and has served as a model for others. We have proved the existence of an embedded minimal surface of genus one with ...
Date: January 10, 2006
Creator: Hoffman, David
Partner: UNT Libraries Government Documents Department

DOE Final Report -NON-LINEAR WAVES IN CONTINUOUS MEDIA- BES- Division of Engineering and Materials Science

Description: FINAL REPORT ON : NON-LINEAR WAVES IN CONTINUOUS MEDIA Doe DE FG03-87ER13686 (001312-001) Submitted January 10, 2006 by Seth J. Putterman 310-8252269 Physics Department University of California Los Angeles, CA 90095 puherman@ritva.physics.ucla.edu NON-LINEAR WAVES IN CONTINUOUS MEDIA I am happy to report that this project has been a big success. For over 10 years the DOE [Division of Materials Sciences and Engineering] has funded our research program on the overarching theme of spontaneous energy focusing phenomena. These effects occur when a nonlinear macroscopic system is excited so as to drive it far from equilibrium. The subsequent relaxation to equilibrium does not occur smoothly but instead is accompanied by the formation of structured domains where the energy density is highly concentrated. A signature example is picosecond sonoluminescence [1] wherein a smooth sound wave has its energy density focused by 12 orders of magnitude to generate a clock-like string of picosecond flashes of ultraviolet light. Our earlier work on solitons [2] demonstrated how uniform surface waves break up into stable localized structures. Our experimental work on turbulence produced photos of localized structures lying many standard deviations outside the range of gaussian statistics[3]. This effect is referred to as intermittency. Our recent work on friction finds its motivation in those theories of sonoluminescence which invoke frictional electricity. In its most common form this is the generation of a spark when we touch a doorknob after walking over a carpet. Our reading of the literature on this subject indicated that frictional electricity like sonoluminescence is not understood. So to probe triboelectrification we set up a modern version of an experiment performed by Bernoulli in 1700. Here sparking is caused by the rubbing of glass against mercury. We indeed observed flashes of light which were accompanied by events of stick-slip friction at the interface between ...
Date: January 10, 2006
Creator: Putterman, Seth J.
Partner: UNT Libraries Government Documents Department

Avian Influenza: Agricultural Issues

Description: Since the fall of 2003, a strain of highly pathogenic avian influenza (H5N1) has spread throughout Asia, infecting mostly poultry but also a limited number of humans. The virus reached Europe in 2005, and the Middle East and Africa in 2006. Avian flu is highly contagious in domestic poultry. Strict biosecurity measures are practiced by commercial poultry farms and encouraged by governments. The economic effects of avian flu outbreaks can be significant, especially given international trade restrictions. Controlling avian flu in poultry is seen as the best way to prevent a human pandemic from developing, by reducing the number of animal hosts in which the virus may evolve. This report mainly covers avian flu in poultry, and will be updated.
Date: March 10, 2006
Creator: Monke, Jim
Partner: UNT Libraries Government Documents Department

Energy: Useful Facts and Numbers

Description: Energy supplies and prices are a major economic factor in the United States, and energy markets are volatile and unpredictable. For both these reasons, energy policy is of frequent interest to the Congress. This report presents a statistical view of the supply and consumption of various forms of energy. After an introductory overview of aggregate energy consumption, the report presents detailed analysis of trends and statistics regarding specific energy sources: oil, electricity, natural gas, and coal. A section on trends in energy efficiency is also presented.
Date: January 10, 2006
Creator: Glover, Carol & Behrens, Carl E.
Partner: UNT Libraries Government Documents Department

Internet Development and Information Control in the People's Republic of China

Description: Since its founding in 1949, the People’s Republic of China (PRC) has exerted great effort in manipulating the flow of information and prohibiting the dissemination of viewpoints that criticize the government or stray from the official Communist party view. The introduction of Internet technology in the mid-1990’s presented a challenge to government control over news sources, and by extension, over public opinion. While the Internet has developed rapidly, broadened access to news, and facilitated mass communications in China, many forms of expression online, as in other mass media, are still significantly stifled. This report discusses the history of this issue and examines the U.S.'s response.
Date: February 10, 2006
Creator: Lum, Thomas
Partner: UNT Libraries Government Documents Department

Farm Commodity Programs: Direct Payments, Counter-Cyclical Payments, and Marketing Loans

Description: Commodity support provisions in the Farm Security and Rural Investment Act of 2002 (P.L. 107-171, the 2002 farm bill) include three primary types of payments: (1) annual direct payments unrelated to production or prices, (2) counter-cyclical payments which are triggered when prices are below statutorily-determined target prices, and (3) marketing assistance loans that offer interim financing and, if prices fall below statutorily-determined loan prices, additional income support. This report describes the payments for wheat, feed grains, cotton, rice, oilseeds, peanuts, wool, mohair, honey, and certain other small grains. These commodities have similar rules, and generally account for about two-thirds of USDA farm commodity program outlays.
Date: February 10, 2006
Creator: Monke, Jim
Partner: UNT Libraries Government Documents Department

China Naval Modernization: Implications for U.S. Navy Capabilities - Background and Issues for Congress

Description: This report focuses on the implications that certain elements of China’s military modernization may have for future required U.S. Navy capabilities. The issue for Congress addressed in this report is: How should China’s military modernization be factored into decisions about U.S. Navy programs? Congress’s decisions on this issue could significantly affect future U.S. Navy capabilities, U.S. Navy funding requirements, and the U.S. defense industrial base, including the shipbuilding industry.
Date: January 10, 2006
Creator: O'Rourke, Ronald
Partner: UNT Libraries Government Documents Department

Gasoline Prices: New Legislation and Proposals

Description: This report discusses policy options for Congress regarding gas prices. The high price of gasoline was an important consideration during the debate on major energy legislation, which ended August 8 as the President signed the Energy Policy Act of 2005, H.R. 6 (P.L. 109-58). However, prices continued to surge, spiking at the end of August when Hurricane Katrina shut down refining operations in the Gulf of Mexico. The continuing crisis renewed attention to some issues that were dropped or compromised in the debate over P.L. 109-58. A large number of factors combined to put pressure on gasoline prices, including increased world demand for crude oil and U.S. refinery capacity inadequate to supply gasoline to a recovering national economy. The war and continued violence in Iraq added uncertainty and a threat of supply disruption that added pressure particularly to the commodity futures markets.
Date: January 10, 2006
Creator: Behrens, Carl E. & Glover, Carol
Partner: UNT Libraries Government Documents Department

Is China a Threat to the U.S. Economy?

Description: This report examines the implications (both challenges and opportunities) for the U.S. economy from China’s rapid economic growth and its emergence as a major economic power. It also describes congressional approaches for dealing with various Chinese economic policies deemed damaging to various U.S. economic sectors.
Date: August 10, 2006
Creator: Elwell, Craig K.; Labonte, Marc & Morrison, Wayne M.
Partner: UNT Libraries Government Documents Department