A letter report issued by the General Accounting Office with an abstract that begins "In accordance with 36 U.S.C. 2103, we are responsible for conducting audits of the agencywide financial statements of the American Battle Monuments Commission. We audited the financial statements of the Commission for the fiscal years ended September 30, 2003, and 2002. The audits were done to determine whether, in all material respects, (1) the Commission's financial statements were reliable, (2) Commission management maintained effective internal control over financial reporting and compliance with laws and regulations, and (3) Commission management complied with applicable laws and regulations. The American Battle Monuments Commission was created in 1923 to commemorate the sacrifices and achievements of U.S. Armed Forces where they have served overseas since April 6, 1917, and locations within the United States as directed by Congress. The Commission designs, administers, operates, and maintains 24 American military cemeteries on foreign soil and 25 federal memorials, monuments, and markers, 22 of which are on foreign soil. The Commission is also responsible for designing and constructing the national World War II Memorial on the Capitol Mall in Washington, D.C., and for maintaining 4 nonfederal memorials with funds provided by those memorials' sponsors."

A letter report issued by the General Accounting Office with an abstract that begins "In 1988, radioactive contamination was found in the drinking water wells of residences near the federal government's uranium enrichment plant in Paducah, Kentucky. In response, the Department of Energy (DOE) began a cleanup program. In 2000, GAO reported that DOE faced significant challenges in cleaning up the site and that it was doubtful that the cleanup would be completed as scheduled by 2010 and within the $1.3 billion cost projection. GAO was asked to determine (1) the amount of money DOE has spent on the site, the purposes for which it was spent, and the estimated total costs for the site; (2) the status of DOE cleanup efforts; and (3) the challenges GAO previously identified that continue to be issues for DOE."

A letter report issued by the General Accounting Office with an abstract that begins "Congress has appropriated more than $20 billion since April 2003 to support rebuilding efforts in Iraq. This complex undertaking, which is occurring in an unstable security environment and under significant time constraints, is being carried out largely through contracts with private-sector companies. As of September 2003, agencies had obligated nearly $3.7 billion on 100 contracts or task orders under existing contracts. Given widespread congressional interest in ensuring that reconstruction contracts are awarded properly and administered effectively, GAO reviewed 25 contract actions that represented about 97 percent of the obligated funds. GAO determined whether agencies had complied with competition requirements in awarding new contracts and issuing task orders and evaluated agencies' initial efforts in carrying out contract administration tasks."

A letter report issued by the General Accounting Office with an abstract that begins "U.S. Department of Agriculture's (USDA) Risk Management Agency (RMA) administers the federal crop insurance program in partnership with insurance companies who share in the risk of loss or gain. In 2002, American Growers Insurance Company (American Growers), at the time, the largest participant in the program, was placed under regulatory control by the state of Nebraska. To ensure that policyholders were protected and that farmers' claims were paid, RMA agreed to fund the dissolution of American Growers. To date, RMA has spent about $40 million. GAO was asked to determine (1) what factors led to the failure of American Growers, (2) whether RMA procedures were adequate to monitor companies' financial condition, and (3) how effectively and efficiently RMA handled the dissolution of American Growers."

A letter report issued by the General Accounting Office with an abstract that begins "The emergence of webcasting as a means of transmitting audio and video content over the Internet has led to concerns about copyright protection and the payment of royalties to those who own the recording copyrights. Arriving at an acceptable rate for calculating royalties has been particularly challenging. Under the Small Webcaster Settlement Act of 2002, small commercial webcasters reached an agreement with copyright owners that included the option of paying royalties for the period of October 28, 1998, to December 31, 2004, on the basis of a percentage of their revenues, expenses, a combination of both, or a minimum fee rather than paying the royalty rates set by the Librarian of Congress. During debate on the act, copyright owners raised concerns that small webcasters might have arrangements with other parties, such as advertisers, that could produce revenues or expenses that might not be included in their royalty calculations. In this context, the Congress mandated that GAO, in consultation with the Register of Copyrights, prepare a report on the (1) economic arrangements between small webcasters and third parties and (2) effect of those arrangements on the royalties …

A letter report issued by the Government Accountability Office with an abstract that begins "The ability to produce the data needed to efficiently and effectively manage the day-to-day operations of the federal government and provide accountability to taxpayers has been a long-standing challenge to most federal agencies. To help address this challenge, the Federal Financial Management Improvement Act of 1996 (FFMIA) requires the 23 Chief Financial Officers Act agencies to implement and maintain financial management systems that comply substantially with (1) federal financial management systems requirements, (2) applicable federal accounting standards, and (3) the U.S. Government Standard General Ledger (SGL) at the transaction level. FFMIA also requires GAO to report annually on the implementation of the act."

A letter report issued by the General Accounting Office with an abstract that begins "The Department of Defense (DOD) has been relying increasingly on computer software to introduce or enhance performance capabilities of major weapon systems. To ensure successful outcomes, software acquisition requires disciplined processes and practices. Without such discipline, weapon programs encounter difficulty in meeting cost and schedule targets. For example, in fiscal year 2003, DOD might have spent as much as $8 billion to rework software because of quality-related issues. GAO was asked to identify the practices used by leading companies to acquire software and to analyze the causes of poor outcomes of selected DOD programs. GAO also was asked to evaluate DOD's efforts to develop programs for improving software acquisition processes and to assess how those efforts compare with leading companies' practices."

A letter report issued by the General Accounting Office with an abstract that begins "With rising federal deficits and greater competition for public resources, it is increasingly important for federal programs, such as the Workforce Investment Act (WIA) programs, to show results. This report examines (1) how useful WIA performance data are for gauging program performance; (2) what local areas are doing to manage their WIA performance and assess one-stops on a timely basis, and how states assist these efforts; and (3) the extent to which the Department of Labor is trying to improve WIA's performance measurement system and assess one-stop success."

A letter report issued by the General Accounting Office with an abstract that begins "More than a decade after the 1991 Persian Gulf War, there is continued interest in the federal response to the health concerns of Gulf War veterans. Gulf War veterans' reports of unexplained illnesses and possible exposures to various health hazards have prompted numerous federal research projects on Gulf War illnesses. This research has been funded primarily by the Department of Veterans Affairs (VA), the Department of Defense (DOD), and the Department of Health and Human Services. GAO is reporting on (1) the status of research and investigations on Gulf War illnesses, (2) the efforts that have been made by VA and DOD to monitor cancer incidence among Gulf War veterans, and (3) VA's communication and collaboration with the Research Advisory Committee on Gulf War Veterans' Illnesses (RAC)."

A letter report issued by the Government Accountability Office with an abstract that begins "As part of the Acela high-speed rail program, the National Railroad Passenger Corporation (Amtrak) executed contracts in 1996 with train manufacturers Bombardier and Alstom to build 20 high-speed trains--called trainsets--and 15 electric high-horsepower locomotives; construct three maintenance facilities; and provide maintenance services for the Acela trainsets. The trainsets, locomotives, and facilities contracts totaled $730 million. Bombardier and Alstom, referred to as the Consortium, created the Northeast Corridor Management Service Corporation (NecMSC) to manage the facilities and maintain the trainsets, including supervising Amtrak maintenance employees. Amtrak pays NecMSC for its management and maintenance services. Concerns about the quality of the Consortium's work and Amtrak's withholding of $70 million in payments resulted in the parties suing each other, each seeking damages of $200 million. After entering into negotiations at the end of 2002, officials from the Consortium and Amtrak signed a settlement agreement in March 2004. In general, under the settlement, the Consortium must complete modifications to the trainsets and locomotives, achieve established performance requirements, provide training to Amtrak staff, and provide and extend warranties. In addition, Amtrak agreed to release up to $42.5 million of the $70 …

A letter report issued by the General Accounting Office with an abstract that begins "Since the end of the Gulf War in 1991, many of the approximately 700,000 U.S. veterans have experienced undiagnosed illnesses. They attribute these illnesses to exposure to chemical warfare (CW) agents in plumes--clouds released from bombing of Iraqi sites. But in 2000, the Department of Defense (DOD) estimated that of the 700,000 veterans, 101,752 troops were potentially exposed. GAO was asked to evaluate the validity of DOD, Department of Veterans Affairs (VA), and British Ministry of Defense (MOD) conclusions about troops' exposure."

This report is a collection of documents written by the group members of the Engineering Sciences Research Foundation (ESRF), Laboratory Directed Research and Development (LDRD) project titled 'A Robust, Coupled Approach to Atomistic-Continuum Simulation'. Presented in this document is the development of a formulation for performing quasistatic, coupled, atomistic-continuum simulation that includes cross terms in the equilibrium equations that arise due to kinematic coupling and corrections used for the calculation of system potential energy to account for continuum elements that overlap regions containing atomic bonds, evaluations of thermo-mechanical continuum quantities calculated within atomistic simulations including measures of stress, temperature and heat flux, calculation used to determine the appropriate spatial and time averaging necessary to enable these atomistically-defined expressions to have the same physical meaning as their continuum counterparts, and a formulation to quantify a continuum 'temperature field', the first step towards constructing a coupled atomistic-continuum approach capable of finite temperature and dynamic analyses.

The performance characteristics and material properties such as stress, microstructure, and composition of nickel coatings and electroformed components can be controlled over a wide range by the addition of small amounts of surface-active compounds to the electroplating bath. Saccharin is one compound that is widely utilized for its ability to reduce tensile stress and refine grain size in electrodeposited nickel. While the effects of saccharin on nickel electrodeposition have been studied by many authors in the past, there is still uncertainty over saccharin's mechanisms of incorporation, stress reduction, and grain refinement. In-situ scanning probe microscopy (SPM) is a tool that can be used to directly image the nucleation and growth of thin nickel films at nanometer length scales to help elucidate saccharin's role in the development and evolution of grain structure. In this study, in-situ atomic force microscopy (AFM) and scanning tunneling microscopy (STM) techniques are used to investigate the effects of saccharin on the morphological evolution of thin nickel films. By observing mono-atomic height nickel island growth with and without saccharin present we conclude that saccharin has little effect on the nickel surface mobility during deposition at low overpotentials where the growth occurs in a layer-by-layer mode. Saccharin was …

There exists a wide variety of important applications for micro- and meso-scale mechanical systems in the commercial and defense sectors, which require high-strength materials and complex geometries that cannot be produced using current MEMS fabrication technologies. Micromilling has great potential to fill this void in MEMS technology by adding the capability of free form machining of complex 3D shapes from a wide variety and combination of traditional, well-understood engineering alloys, glasses and ceramics. Inefficiencies in micromilling result from the relationships between a cutting tool's breaking strength, the applied cutting force, and the metal removal rate. Because machining times in mesofeatures scale inversely to the part size, a feature 1/10th as large will take 10 times as long to machine. Also, required chip sizes of 1 m or less are cut with tools having edge radius of 2-3 m, the cutting edge effectively has a highly negative rake angle, cutting forces are increased significantly causing chip loads to be further reduced and the machining takes even longer than predicted above. However, cutting forces do not increase with cutting speed, so faster spindles with reduced tool runout are the path to achieve efficient mesoscale milling. This research explored the development of new …

Property-based testing is a testing technique that evaluates executions of a program. The method checks that specifications, called properties, hold throughout the execution of the program. TASpec is a language used to specify these properties. This paper compares some attributes of the language with the specification patterns used for model-checking languages, and then presents some descriptions of properties that can be used to detect common security flaws in programs. This report describes the results of a one year research project at the University of California, Davis, which was funded by a University Collaboration LDRD entitled ''Property-based Testing for Cyber Security Assurance''.

Corrective Action Unit 210, Storage Areas and Contaminated Material, is identified in the Federal Facilities Agreement and Consent Order. This Corrective Action Unit consists of four Corrective Action Sites located in Areas 10, 12, and 15 of the Nevada Test Site. This report documents that the closure activities conducted meet the approved closure standards.

Waste characterization is probably the most costly part of radioactive waste management. An important part of this characterization is the measurements of headspace gas in waste containers in order to demonstrate the compliance with Resource Conservation and Recovery Act (RCRA) or transportation requirements. The traditional chemical analysis methods, which include all steps of gas sampling, sample shipment and laboratory analysis, are expensive and time-consuming as well as increasing worker's exposure to hazardous environments. Therefore, an alternative technique that can provide quick, in-situ, and real-time detections of headspace gas compositions is highly desirable. This report summarizes the results obtained from a Laboratory Directed Research & Development (LDRD) project entitled 'Potential Application of Microsensor Technology in Radioactive Waste Management with Emphasis on Headspace Gas Detection'. The objective of this project is to bridge the technical gap between the current status of microsensor development and the intended applications of these sensors in nuclear waste management. The major results are summarized below: {sm_bullet} A literature review was conducted on the regulatory requirements for headspace gas sampling/analysis in waste characterization and monitoring. The most relevant gaseous species and the related physiochemical environments were identified. It was found that preconcentrators might be needed in order for …

As part of DARPA Information Processing Technology Office (IPTO) Software for Distributed Robotics (SDR) Program, Sandia National Laboratories has developed analysis and control software for coordinating tens to thousands of autonomous cooperative robotic agents (primarily unmanned ground vehicles) performing military operations such as reconnaissance, surveillance and target acquisition; countermine and explosive ordnance disposal; force protection and physical security; and logistics support. Due to the nature of these applications, the control techniques must be distributed, and they must not rely on high bandwidth communication between agents. At the same time, a single soldier must easily direct these large-scale systems. Finally, the control techniques must be provably convergent so as not to cause undo harm to civilians. In this project, provably convergent, moderate communication bandwidth, distributed control algorithms have been developed that can be regulated by a single soldier. We have simulated in great detail the control of low numbers of vehicles (up to 20) navigating throughout a building, and we have simulated in lesser detail the control of larger numbers of vehicles (up to 1000) trying to locate several targets in a large outdoor facility. Finally, we have experimentally validated the resulting control algorithms on smaller numbers of autonomous vehicles.

This plan describes the process for managing research generated medical waste at Sandia National Laboratories/California. It applies to operations at the Chemical and Radiation Detection Laboratory (CRDL), Building 968, and other biosafety level 1 or 2 activities at the site. It addresses the accumulation, storage, treatment and disposal of medical waste and sharps waste. It also describes the procedures to comply with regulatory requirements and SNL policies applicable to medical waste.

Deep X-ray lithography on PMMA resist is used in the LIGA process. The resist is exposed to synchrotron X-rays through a patterned mask and then is developed in a liquid developer to make high aspect ratio microstructures. The limitations in dimensional accuracies of the LIGA generated microstructure originate from many sources, including synchrotron and X-ray physics, thermal and mechanical properties of mask and resist, and from the kinetics of the developer. This work addresses the thermal analysis and temperature rise of the mask-resist assembly during exposure in air at the Advanced Light Source (ALS) synchrotron. The concern is that dimensional errors generated at the mask and the resist due to thermal expansion will lower the accuracy of the lithography. We have developed a three-dimensional finite-element model of the mask and resist assembly that includes a mask with absorber, a resist with substrate, three metal holders, and a water-cooling block. We employed the LIGA exposure-development software LEX-D to calculate volumetric heat sources generated in the assembly by X-ray absorption and the commercial software ABAQUS to calculate heat transfer including thermal conduction inside the assembly, natural and forced convection, and thermal radiation. at assembly outer and/or inner surfaces. The calculations of assembly …

In dynamic cardiac SPECT estimates of kinetic parameters ofa one-compartment perfusion model are usually obtained in a two stepprocess: 1) first a MAP iterative algorithm, which properly models thePoisson statistics and the physics of the data acquisition, reconstructsa sequence of dynamic reconstructions, 2) then kinetic parameters areestimated from time activity curves generated from the dynamicreconstructions. This paper provides a method for calculating thecovariance matrix of the kinetic parameters, which are determined usingweighted least squares fitting that incorporates the estimated varianceand covariance of the dynamic reconstructions. For each transaxial slicesets of sequential tomographic projections are reconstructed into asequence of transaxial reconstructions usingfor each reconstruction inthe time sequence an iterative MAP reconstruction to calculate themaximum a priori reconstructed estimate. Time-activity curves for a sumof activity in a blood region inside the left ventricle and a sum in acardiac tissue region are generated. Also, curves for the variance of thetwo estimates of the sum and for the covariance between the two ROIestimates are generated as a function of time at convergence using anexpression obtained from the fixed-point solution of the statisticalerror of the reconstruction. A one-compartment model is fit to the tissueactivity curves assuming a noisy blood input function to give weightedleast squares …

The results and procedure of the alignment of the MINOS Far Detector are presented. The far detector has independent alignments of SM1 and SM2. The misalignments have an estimated uncertainty of {approx}850 {micro}m for SM1 and {approx}750 {micro}m for SM2. The alignment has as inputs the average rotations of U and V as determined by optical survey and strip positions within modules measured from the module mapper. The output of this is a module-module correction for transverse mis-alignments. These results were verified by examining an independent set of data. These alignment constants on average contribute much less then 1% to the total uncertainty in the transverse strip position.

By means of coupled-cluster theory, molecular properties can be computed with an accuracy often exceeding that of experiment. The high-degree polynomial scaling of the coupled-cluster method, however, remains a major obstacle in the accurate theoretical treatment of mainstream chemical problems, despite tremendous progress in computer architectures. Although it has long been recognized that this super-linear scaling is non-physical, the development of efficient reduced-scaling algorithms for massively parallel computers has not been realized. We here present a locally correlated, reduced-scaling, massively parallel coupled-cluster algorithm. A sparse data representation for handling distributed, sparse multidimensional arrays has been implemented along with a set of generalized contraction routines capable of handling such arrays. The parallel implementation entails a coarse-grained parallelization, reducing interprocessor communication and distributing the largest data arrays but replicating as many arrays as possible without introducing memory bottlenecks. The performance of the algorithm is illustrated by several series of runs for glycine chains using a Linux cluster with an InfiniBand interconnect.

Contaminant dispersal models for use at scales ranging from meters to miles are widely used for planning sensor locations, first-responder actions for release scenarios, etc. and are constantly being improved. Applications range from urban contaminant dispersal to locating buried targets from an exhaust signature. However, these models need detailed data for model improvement and validation. A small Sandia National Laboratories Laboratory Directed Research and Development (LDRD) program was funded in FY04 to examine the feasibility and usefulness of a scale-model capability for quantitative characterization of flow and contaminant dispersal in complex environments. This report summarizes the work performed in that LDRD. The basics of atmospheric dispersion and dispersion modeling are reviewed. We examine the need for model scale data, and the capability of existing model test methods. Currently, both full-scale and model scale experiments are performed in order to collect validation data for numerical models. Full-scale experiments are expensive, are difficult to repeat, and usually produce relatively sparse data fields. Model scale tests often employ wind tunnels, and the data collected is, in many cases, derived from single point measurements. We review the scaling assumptions and methods that are used to relate model and full scale flows. In particular, we …