Significant advances were made on all objectives of the research program. We have developed fast multiresolution methods for performing electronic structure calculations with emphasis on constructing efficient representations of functions and operators. We extended our approach to problems of scattering in solids, i.e. constructing fast algorithms for computing above the Fermi energy level. Part of the work was done in collaboration with Robert Harrison and George Fann at ORNL. Specific results (in part supported by this grant) are listed here and are described in greater detail. (1) We have implemented a fast algorithm to apply the Green's function for the free space (oscillatory) Helmholtz kernel. The algorithm maintains its speed and accuracy when the kernel is applied to functions with singularities. (2) We have developed a fast algorithm for applying periodic and quasi-periodic, oscillatory Green's functions and those with boundary conditions on simple domains. Importantly, the algorithm maintains its speed and accuracy when applied to functions with singularities. (3) We have developed a fast algorithm for obtaining and applying multiresolution representations of periodic and quasi-periodic Green's functions and Green's functions with boundary conditions on simple domains. (4) We have implemented modifications to improve the speed of adaptive multiresolution algorithms for …

The main function of the CO instrument is to provide continuous accurate measurements of carbon monoxide mixing ratio at the ARM SGP Central Facility (CF) 60-meter tower (36.607 °N, 97.489 °W, 314 meters above sea level). The essential feature of the control and data acquisition system is to record signals from a Thermo Electron 48C and periodically calibrate out zero and span drifts in the instrument using the combination of a CO scrubber and two concentrations of span gas (100 and 300 ppb CO in air). The system was deployed on May 25, 2005.

This report describes homegrown violent jihadists and the plots and attacks that have occurred since 9/11. For this report, "homegrown" describes terrorist activity or plots perpetrated within the United States or abroad by American citizens, legal permanent residents, or visitors radicalized largely within the United States. The term "jihadist" describes radicalized individuals using Islam as an ideological and/or religious justification for their belief in the establishment of a global caliphate, or jurisdiction governed by a Muslim civil and religious leader known as a caliph. The term "violent jihadist" characterizes jihadists who have made the jump to illegally supporting, plotting, or directly engaging in violent terrorist activity.

This report provides an analysis of how organized crime has capitalized on globalization by using borders as opportunities, relying on fast-paced technological change, and adapting its organizational structures. It illustrates how these transformations can impact U.S. persons, businesses, and interests. The report includes a discussion of how U.S. law enforcement conceptualizes organized crime in the 21st century and concludes by examining potential issues for Congress, including the extent to which organized crime is a national security threat (partly to be tackled by U.S. law enforcement agencies), congressional oversight regarding the federal coordination of organized crime investigations, and the utility of current resources appropriated to combat organized crime.

This report discusses the current state of the kingdom of Saudi Arabia, its relationship with the United States, and future initiatives to further develop U.S.-Saudi relations.

The objective of this paper is to investigate the transport of uranium oxide particles that may be present in carbon dioxide (CO2) gas coolant, into the graphite blocks of gas-cooled, graphite moderated reactors. The transport of uranium oxide in the coolant system, and subsequent deposition of this material in the graphite, of such reactors is of interest because it has the potential to influence the application of the Graphite Isotope Ratio Method (GIRM). The GIRM is a technology that has been developed to validate the declared operation of graphite moderated reactors. GIRM exploits isotopic ratio changes that occur in the impurity elements present in the graphite to infer cumulative exposure and hence the reactor’s lifetime cumulative plutonium production. Reference Gesh, et. al., for a more complete discussion on the GIRM technology.

This report provides a brief overview of political, economic, and humanitarian conditions in Sudan and examines the conflict dynamics that persist in the country. It also outlines U.S. policy and congressional engagement.

On November 20, 2015, gunmen laid siege to the Radisson Blu, a hotel popular with foreigners in Mali's capital, Bamako. This report discusses issues for Congress in the wake of the attack.

This report provides background information regarding on political and security situation in Kenya. The report discusses U.S.-Kenya relations, as U.S. government views Kenya as a strategic partner and anchor state in East Africa, and as critical to counterterrorism efforts in the region.

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This report discusses overarching trends in Millennium Development Goals (MDG) progress and lessons learned from previous and ongoing efforts to achieve them. The MDGs are a group of measurable development targets agreed to by 189 U.N. member states - including the United States - as part of the 2000 Millennium Declaration. The MDGs cover a number of issues, such as eradicating extreme hunger and poverty, combating HIV/AIDS, and promoting gender equality and women's empowerment. This report examines U.S. policy toward the MDGs and how, if at all, the Goals fit into U.S. development and foreign assistance policy. It also examines different schools of thought regarding the effectiveness of the Goals, their role in international development, and their long-term sustainability. This report addresses the MDGs as a whole; it does not assess or analyze issues pertaining to the individual Goals.

Cleary [2007] divides the proliferation pathway into stages: diversion, facility misuse, transportation, transformation, and weapons fabrication. King [2010], using Cleary's methodology, compares a deepburn fusion-driven blanket containing weapons-grade plutonium with a PWR burning MOX fuel enrichments of 5-9%. King considers the stages of theft, transportation, transformation, and nuclear explosive fabrication. In the current study of used fuel storage security, a similar approach is appropriate. First, one must consider the adversary's objective, which can be categorized as on-site radionuclide dispersion, theft of material for later radionuclide dispersion, and theft of material for later processing and fabrication into a nuclear explosive. For on-site radionuclide dispersion, only a single proliferation pathway stage is appropriate: dispersion. That situation will be addressed in future reports. For later radionuclide dispersion, the stages are theft, transportation, and transformation (from oxide spent fuel containing both fission products and actinides to a material size and shape suitable for dispersion). For later processing and fabrication into a nuclear explosive, the stages are theft (by an outsider or by facility misuse by an insider), transportation, transformation (from oxide spent fuel containing both fission products and actinides to a metal alloy), and fabrication (of the alloy into a weapon). It should be …

This report provides an overview of the recent tragedy in Bangladesh and the Bangladesh economic environment and culture. It also notes the responses to the tragedy, to date, from Congress, the Administration, the ILO, the Bangladesh government, and the private sector. Finally, it raises some possible issues for Congress.

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The FY 2013 budget debate will take place within the context of growing concerns about the need to address federal budget deficits, the national debt, and a sluggish economic recovery following the longest and deepest recession since the Great Depression. This report contains information on FY 2013 appropriations, FY 2012 appropriations, FY 2011 appropriations, Congressional action, and related topics.

This report summarizes the results of a series of feasibility testing studies for in-ground and in-concrete imaging/detection technologies including radar imaging and acoustic time-of flight method. The objectives of this project are: (1) Design Information Verification (DIV) Tools for In-Concrete Inspections - To determine the feasibility of using holographic radar imaging (HRI), radar imaging, and acoustic time-of-flight (TOF) non-destructive evaluation technologies to detect, locate and identify pipes and voids embedded in standard-density and high-density concrete walls that typify those the IAEA will need to verify during field inspections; (2) DIV Tools for In-Ground Inspections - To determine the feasibility of using HRI and radar imaging non-destructive evaluation technologies to detect, locate, and identify objects buried at various depths made of various materials (metal, plastic, wood, and concrete) and representing geometries that typify those the IAEA will need to verify during field inspections; and (3) Based on the results of the studies, recommend the next steps needed to realize fieldable tools for in-concrete and in-ground inspections (including detection of deeply buried polyvinyl chloride [PVC] pipes) that employ the technologies shown to be feasible.

This report focuses on options for protecting structures and for protecting wildlands and natural resources from wildfires. It begins with a brief overview of the nature of wildfires, followed by a discussion of protecting structures. Then, it discusses wildfire damages to wildlands and natural resources, fuel treatment options and their benefits and limitations, and public involvement in federal decisions.

This report analyzes the Court's decision in Hobby Lobby, including arguments made between the majority and dissent, to clarify the scope of the decision and potential impacts for future interpretation of RFRA's applicability. It also examines potential legislative responses, should Congress consider addressing the current applicability of RFRA. Finally, the report addresses the decision's effect on requirements that employers offer contraceptive coverage in group health plans under federal or state law.

This report provides background information regarding sponsored prayer, which is prohibited under the First Amendment with few exceptions. The report discusses school prayer, legislative prayer, military chaplaincy, and legislative issues.

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The U.S. Supreme Court's highly anticipated decision in Obergefell v. Hodges recognized federal constitutional protection for same-sex marriage. This report will analyze a range of legal issues for which Obergefell has implications.

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This report gives an overview of the status of FY2011 appropriations and funding issues for the Senate, House of Representatives, and support agencies.