Testimony issued by the Government Accountability Office with an abstract that begins "Energy prices for crude oil, heating oil, unleaded gasoline, and natural gas have risen substantially since 2002, generating questions about the role derivatives markets have played and the scope of the Commodity Futures Trading Commission's (CFTC) authority. This testimony focuses on (1) trends and patterns in the futures and physical energy markets and their effects on energy prices, (2) the scope of CFTC's regulatory authority, and (3) the effectiveness of CFTC's monitoring and detection of abuses in energy markets. The testimony is based on the GAO report, Commodity Futures Trading Commission: Trends in Energy Derivatives Markets Raise Questions about CFTC's Oversight (GAO-08-25, October 19, 2007). For this work, GAO analyzed futures and large trader data and interviewed market participants, experts, and officials at six federal agencies."

Testimony issued by the Government Accountability Office with an abstract that begins "The Federal Bureau of Investigation's (FBI) Terrorist Screening Center (TSC) maintains a consolidated watch list of known or appropriately suspected terrorists and sends records from the list to agencies to support terrorism-related screening. This testimony discusses (1) standards for including individuals on the list, (2) the outcomes of encounters with individuals on the list, (3) potential vulnerabilities in screening processes and efforts to address them, and (4) actions taken to promote effective terrorism-related screening. This statement is based on GAO's report (GAO-08-110). To accomplish the objectives, GAO reviewed documentation obtained from and interviewed officials at TSC, the FBI, the National Counterterrorism Center, the Department of Homeland Security, and other agencies that perform terrorism-related screening."

Other written product issued by the Government Accountability Office with an abstract that begins "One of the greatest challenges facing the United States in the 21st century is sustaining our natural resources and safeguarding our environmental assets for future generations while promoting economic growth and maintaining our quality of life. To manage natural resources effectively and efficiently, policymakers need information and methods to analyze the dynamic interplay between the economy and the environment. Enhancing the information to make sound decisions can be facilitated by developing national environmental accounts. These accounts provide a framework for organizing information on the status, use, and value of natural resources and environmental assets, as well as on expenditures on environmental protection and resource management. While many countries have developed and are using environmental accounts, the United States lags behind. GAO and the National Academy of Sciences (NAS) convened this forum to discuss developing accounts in the United States. Participants included U.S. federal agency officials and national and international statistical, energy, environment, and natural resource experts. Comments expressed do not necessarily represent the views of any one participant or the organizations that these participants represent, including GAO and NAS."

Testimony issued by the Government Accountability Office with an abstract that begins "In November 2005, the Department of Homeland Security (DHS) established the Secure Border Initiative (SBI), a multiyear, multibillion dollar program to secure U.S. borders. One element of SBI is SBInet--the U.S. Customs and Border Protection (CBP) program responsible for developing a comprehensive border protection system through a mix of security infrastructure (e.g., fencing), and surveillance and communication technologies (e.g., radars, sensors, cameras, and satellite phones). The House Committee on Homeland Security asked GAO to monitor DHS progress in implementing the SBInet program. This testimony provides GAO's observations on (1) SBInet technology implementation; (2) SBInet infrastructure implementation; (3) the extent to which CBP has determined the impact of SBInet technology and infrastructure on its workforce needs and operating procedures; and (4) how the CBP SBI Program Management Office (PMO) has defined its human capital goals and the progress it has made to achieve these goals. GAO's observations are based on analysis of DHS documentation, such as program schedules, contracts, status, and reports. GAO also conducted interviews with DHS officials and contractors, and visits to sites in the southwest border where SBInet deployment is underway. GAO performed the work from …

Testimony issued by the Government Accountability Office with an abstract that begins "To address projected increases in air traffic and current problems with aviation congestion and delays, the Joint Planning and Development Office (JPDO), an interagency organization within the Federal Aviation Administration (FAA), is working to plan and implement a new air traffic management system, known as the Next Generation Air Transportation System (NextGen). This effort involves implementing new technologies and air traffic control procedures, airspace redesign, and infrastructure developments, including new or expanded runways and airports. Community opposition is, however, a major challenge, largely because of concerns about aviation noise. As a result, according to JPDO, aviation noise will be a primary constraint on NextGen unless its effects can be managed and mitigated. GAO's requested testimony addresses (1) the key factors that affect communities' level of exposure to aviation noise, (2) the status of efforts to address the impact of aviation noise, and (3) major challenges and next steps for reducing and mitigating the effects of aviation noise. The testimony is based on prior GAO work (including a 2000 survey of the nation's 50 largest airports), updated with reviews of recent literature, FAA data and forecasts, and interviews with …

Testimony issued by the Government Accountability Office with an abstract that begins "According to Labor's most recent data, there are an estimated 44 million active participants in 401(k) plans. As participants accrue earnings on their investments, they also pay a number of fees, associated with 401(k) plans. Over the course of the employee's career, fees may significantly decrease retirement account balances. For plan sponsors, understanding the fees they are being charged helps fulfill their fiduciary responsibility to act in the best interest of plan participants. GAO's prior work on 401(k) fees found that fee disclosures are limited and do not allow an easy comparison of investment options. GAO previously made recommendations to both Congress and Labor on ways to improve the disclosure of fee information to both plan participants and sponsors. Both Labor and Congress now have efforts under way to ensure that both participants and sponsors receive the necessary fee information to make informed decisions. These efforts on the subject have generated significant debate. This testimony provides information about the way fee information could be disclosed to benefit 401(k) participants and sponsors, focusing on 1) the information on fees that could be most useful for plan participants and plan …

This report discusses the curators' evaluation of WAS Release 4, part of the Web-at-Risk project.

Light-driven oxidation of water to dioxygen in plants, algae and cyanobacteria iscatalyzed within photosystem II (PS II) by a Mn4Ca cluster. Although the cluster has been studied by many different methods, the structure and the mechanism have remained elusive. X-ray absorption and emission spectroscopy and EXAFS studies have been particularly useful in probing the electronic and geometric structure, and the mechanism of the water oxidation reaction. Recent progress, reviewed here, includes polarized X-ray absorption spectroscopy measurements of PS II single crystals. Analysis of those results has constrained the Mn4Ca cluster geometry to a setof three similar high-resolution structures. The structure of the cluster from the present study is unlike either the 3.0 or 3.5 Angstrom-resolution X-ray structures or other previously proposed models. The differences between the models derived from X-rayspectroscopy and crystallography are predominantly because of damage to the Mn4Ca cluster by X-rays under the conditions used for structure determination by X-ray crystallography. X-ray spectroscopy studies are also used for studying the changes in the structure of the Mn4Ca catalytic center as it cycles through the five intermediate states known as the Si-states (i=0-4). The electronic structure of the Mn4Ca cluster has been studied more recently using resonant inelastic X-ray …

In this report we derive a model for a highly scattering medium, implemented as a set of MATLAB functions. This model is used to analyze an approach for using time-reversal to enhance the detection of a single frequency source in a highly scattering medium. The basic approach is to apply the singular value decomposition to the multistatic response matrix for a time-reversal array system. We then use the array in a purely passive mode, measuring the response to the presence of a source. The measured response is projected onto the singular vectors, creating a time-reversal pseudo-spectrum. We can then apply standard detection techniques to the pseudo-spectrum to determine the presence of a source. If the source is close to a particular scatterer in the medium, then we would expect an enhancement of the inner product between the array response to the source with the singular vector associated with that scatterer. In this note we begin by deriving the Foldy-Lax model of a highly scattering medium, calculate both the field emitted by the source and the multistatic response matrix of a time-reversal array system in the medium, then describe the initial analysis approach.

If carbon dioxide capture and storage (CCS) technologies areimplemented on a large scale, the amounts of CO2 injected and sequesteredunderground could be extremely large. The stored CO2 then replaces largevolumes of native brine, which can cause considerable pressureperturbation and brine migration in the deep saline formations. Ifhydraulically communicating, either directly via updipping formations orthrough interlayer pathways such as faults or imperfect seals, theseperturbations may impact shallow groundwater or even surface waterresources used for domestic or commercial water supply. Possibleenvironmental concerns include changes in pressure and water table,changes in discharge and recharge zones, as well as changes in waterquality. In compartmentalized formations, issues related to large-scalepressure buildup and brine displacement may also cause storage capacityproblems, because significant pressure buildup can be produced. Toaddress these issues, a three-year research project was initiated inOctober 2006, the first part of which is summarized in this annualreport.

Currently, most of our thinking about the defects responsible for initiating laser damage considers them as featureless absorbers. However, an increasing body of evidence, particularly involving multi-wavelength irradiation, suggests electronic structure of damage initiators is important in determining both initiation and conditioning behaviors in KDP. The effective absorption coefficient of energy under multi-wavelength irradiation cannot be accounted for by a structureless absorber, but is consistent with an initiator with a multi-level structure. We outline the evidence and assess the ability of such a simple multi-level model to explain these and other experimentally observed behaviors.

This month's issue has the following articles: (1) Homeland Security Begins Abroad--Commentary by John C. Doesburg; (2) Out of Harm's Way--New physical protection and accountability systems, together with a focus on security, safeguard nuclear materials in the Russian Federation; (3) A Calculated Journey to the Center of the Earth--Determining the permeability of partially melted metals in a mineral matrix unlocks secrets about the formation of Earth's core; (4) Wireless That Works--Communication technologies using ultrawideband radar are improving national security; and (5) Power to the People--Edward Teller envisioned safe and plentiful nuclear power for peaceful applications.

X-ray free-electron lasers (XFELs) will produce photon pulses with a unique and desirable combination of properties. Their short X-ray wavelengths allow penetration into materials and the ability to probe structure at and below the nanometer scale. Their ultra-short duration gives information about this structure at the fundamental time-scales of atoms and molecules. The extreme intensity of the pulses will allow this information to be acquired in a single shot, so that these studies can be carried out on non-repeatable processes or on weakly-scattering objects that will be modified by the pulse. A fourth property of XFEL pulses is their high transverse coherence, which brings the promise of decades of innovation in visible optics to the X-ray regime, such as holography, interferometry, and laser-based imaging. Making an effective use of XFEL pulses, however, will benefit from innovations that are new to both X-ray science and coherent optics. One such innovation is the new method of time-delay X-ray holography [1], recently demonstrated at the FLASH FEL at DESY in Hamburg, to measure the evolution of objects irradiated by intense pulses. One of the pressing questions about the high-resolution XFEL imaging and characterization of non-periodic or weakly-scattering objects is the effect of the …

An Access Grid Venue Server provides access to individual Virtual Venues, virtual spaces where users can collaborate using the Access Grid Venue Client software. This manual describes the Venue Server component of the Access Grid Toolkit, version 2.3. Covered here are the basic operations of starting a venue server, modifying its configuration, and modifying the configuration of the individual venues.

InfiniBand (IB) is a popular network technology for modern high-performance computing systems. MPI implementations traditionally support IB using a reliable, connection-oriented (RC) transport. However, per-process resource usage that grows linearly with the number of processes, makes this approach prohibitive for large-scale systems. IB provides an alternative in the form of a connectionless unreliable datagram transport (UD), which allows for near-constant resource usage and initialization overhead as the process count increases. This paper describes a UD-based implementation for IB in Open MPI as a scalable alternative to existing RC-based schemes. We use the software reliability capabilities of Open MPI to provide the guaranteed delivery semantics required by MPI. Results show that UD not only requires fewer resources at scale, but also allows for shorter MPI startup times. A connectionless model also improves performance for applications that tend to send small messages to many different processes.

Annual Illness and Injury Surveillance Program report for the Hanford site. The IISP monitors illnesses and health conditions that result in an absence of workdays, occupational injuries and illnesses, and disabilities and deaths among current workers. The prpogram is part of DOE's commitment to assuring the health and safety of its workers and includes the conduct of epidemiologic surveillance activities that provide an early warning system for health problems among workers.

Available methods for developing and screening small drug-like molecules able to knockout toxins or pathogenic microorganisms have some limitations. In order to be useful, these new methods must provide high-throughput analysis and identify specific binders in a short period of time. To meet this need, we are developing an approach that uses living cells to generate libraries of small biomolecules, which are then screened inside the cell for activity. Our group is using this new, combined approach to find highly specific ligands capable of disabling anthrax Lethal Factor (LF) as proof of principle. Key to our approach is the development of a method for the biosynthesis of libraries of cyclic peptides, and an efficient screening process that can be carried out inside the cell.

Annual Illness and Injury Surveillance Program report for 2004 for the Hanford site. The U.S. Department of Energy’s (DOE) commitment to assuring the health and safety of its workers includes the conduct of epidemiologic surveillance activities that provide an early warning system for health problems among workers. The IISP monitors illnesses and health conditions that result in an absence of workdays, occupational injuries and illnesses, and disabilities and deaths among current workers.

Annual Illness and Injury Surveillance Program for 2004 for the Hanford site. The U.S. Department of Energy’s (DOE) commitment to assuring the health and safety of its workers includes the conduct of epidemiologic surveillance activities that provide an early warning system for health problems among workers. The Illness and Injury Surveillance Program monitors illnesses and health conditions that result in an absence of workdays, occupational injuries and illnesses, and disabilities and deaths among current workers.

Free weekly newspaper that includes business and classified advertising.

Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.

Daily student newspaper from the University of North Texas in Denton, Texas that includes local, state and campus news along with advertising.

Weekly student newspaper from Texas Wesleyan University in Fort Worth, Texas that includes campus and local news along with advertising.

Weekly student newspaper from Texas Wesleyan University in Fort Worth, Texas that includes campus and local news along with advertising.