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Numerical study of boundary layer injection as a scale control method (open access)

Numerical study of boundary layer injection as a scale control method

A boundary layer injection method of controlling scale-buildup in geothermal two-phase flow nozzles is studied. The object of this study is to set an upper limit on the ratio of the injected mass flow rate to the free stream mass flow rate that is necessary to isolate the scale carrying free stream flow from the nozzle wall. In order to develop a numerical model of the boundary layer flow, assumptions are made which reduce the results to order of magnitude approximations. Two configurations of nozzles with various injection flow rates are tried. It is found by numerical experiment that a nozzle with injection through a 1 mm thick ring near the inlet, is more efficient at isolating the free stream than a porous nozzle. A mass flow rate ratio of 0.173% was necessary to achieve this effect. It may be concluded that an upper limit on the mass flow rate ratio is about 2.0% with injection through a ring near the inlet, and that boundary layer injection is a reasonable method of controlling scale-buildup. A glossary of variables, program documentation and listings are presented for programs GMD15SR8, TRACK11, and TRACK12.
Date: September 26, 1975
Creator: Feiereisen, W.
System: The UNT Digital Library
Expansion potential for existing nuclear power station sites (open access)

Expansion potential for existing nuclear power station sites

This report is a preliminary analysis of the expansion potential of the existing nuclear power sites, in particular their potential for development into nuclear energy centers (NECs) of 10 (GW(e) or greater. The analysis is based primarily on matching the most important physical characteristics of a site against the dominating site criteria. Sites reviewed consist mainly of those in the 1974 through 1976 ERDA Nuclear Power Stations listings without regard to the present status of reactor construction plans. Also a small number of potential NEC sites that are not associated with existing power stations were reviewed. Each site was categorized in terms of its potential as: a dispersed site of 5 GW(e) or less; a mini-NEC of 5 to 10 GW(e); NECs of 10 to 20 GW(e); and large NECs of more than 20 GW(e). The sites were categorized on their ultimate potential without regard to political considerations that might restrain their development. The analysis indicates that nearly 40 percent of existing sites have potential for expansion to nuclear energy centers.
Date: September 26, 1977
Creator: Cope, D. F. & Bauman, H. F.
System: The UNT Digital Library
A microwiggler Free-Electron Laser at the Brookhaven Accelerator Test Facility (open access)

A microwiggler Free-Electron Laser at the Brookhaven Accelerator Test Facility

We report the design and status of an FEL experiment at the Brookhaven National Laboratory Accelerator Test Facility. A 50 MeV high brightness electron beam will be utilized for an oscillator experiment in the visible wavelength region. The microwiggler to be used is a superferric planar undulator with a 0.88 cm period, 60 cm length and K = 0.35. The optical cavity is a 368 cm long stable resonator with broadband dielectric coated mirrors. 8 refs., 2 figs., 4 tabs.
Date: September 26, 1989
Creator: Batchelor, K.; Ben-Zvi, Ilan; Fernow, R.; Gallardo, J.; Kirk, H.; Pellegrini, C. et al.
System: The UNT Digital Library
Monthly energy review, September 1991. [Contains glossary] (open access)

Monthly energy review, September 1991. [Contains glossary]

This publication presents current data on production, consumption, stocks, imports, exports, and prices of the principal energy commodities in the United States. Also included are data on international production of crude oil, consumption of petroleum products, petroleum stocks, and production of electricity from nuclear-powered facilities. 36 figs., 57 tabs.
Date: September 26, 1991
Creator: unknown
System: The UNT Digital Library
Government Shutdown: Operations of the Department of Defense During a Lapse in Appropriations (open access)

Government Shutdown: Operations of the Department of Defense During a Lapse in Appropriations

This report provides an overview of guidelines that have governed planning for Department of Defense (DOD) operations over the last 30 years in the event of a funding lapse. It also discusses the implications of the guidelines for a possible impending shutdown and briefly reviews what is known about current DOD planning for a shutdown.
Date: September 26, 2013
Creator: Towell, Pat & Belasco, Amy
System: The UNT Digital Library
Women in the United States Congress: Historical Overview, Tables, and Discussion (open access)

Women in the United States Congress: Historical Overview, Tables, and Discussion

This report includes a discussion of the impact of women in Congress as well as historical information, including the number and percentage of women in Congress over time, means of entry to Congress, comparisons to international and state legislatures, records for tenure, firsts for women in Congress, women in leadership, and African American and Asian Pacific American women in Congress.
Date: September 26, 2013
Creator: Manning, Jennifer E.; Shogan, Colleen J. & Brudnick, Ida A.
System: The UNT Digital Library
Women in the United States Congress, 1917-2013: Biographical and Committee Assignment Information, and Listings by State and Congress (open access)

Women in the United States Congress, 1917-2013: Biographical and Committee Assignment Information, and Listings by State and Congress

This report includes biographical information, including the names, committee assignments, dates of service, listings by Congress and state, and (for Representatives) congressional districts of the 297 women who have served in Congress.
Date: September 26, 2013
Creator: Manning, Jennifer E. & Brudnick, Ida A.
System: The UNT Digital Library
Disaster Recovery: Past Experiences Offer Insights for Recovering from Hurricanes Ike and Gustav and Other Recent Natural Disasters (open access)

Disaster Recovery: Past Experiences Offer Insights for Recovering from Hurricanes Ike and Gustav and Other Recent Natural Disasters

A letter report issued by the Government Accountability Office with an abstract that begins "This month, Hurricanes Ike and Gustav struck the Gulf Coast producing widespread damage and leading to federal major disaster declarations. Earlier this year, heavy flooding resulted in similar declarations in seven Midwest states. In response, federal agencies have provided millions of dollars in assistance to help with short- and long-term recovery. State and local governments bear the primary responsibility for recovery and have a great stake in its success. Experiences from past disasters may help them better prepare for the challenges of managing and implementing the complexities of disaster recovery. GAO was asked to identify insights from past disasters and share them with state and local officials undertaking recovery activities. GAO reviewed six past disasters-- the Loma Prieta earthquake in northern California (1989), Hurricane Andrew in south Florida (1992), the Northridge earthquake in Los Angeles, California (1994), the Kobe earthquake in Japan (1995), the Grand Forks/Red River flood in North Dakota and Minnesota (1997), and Hurricanes Katrina and Rita in the Gulf Coast (2005). GAO interviewed officials involved in the recovery from these disasters and experts on disaster recovery. GAO also reviewed relevant legislation, policies, and …
Date: September 26, 2008
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Nuclear Waste: Action Needed to Improve Accountability and Management of DOE's Major Cleanup Projects (open access)

Nuclear Waste: Action Needed to Improve Accountability and Management of DOE's Major Cleanup Projects

A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Energy (DOE) spends billions of dollars annually to clean up nuclear wastes at sites that produced nuclear weapons. Cleanup projects decontaminate and demolish buildings, remove and dispose of contaminated soil, treat contaminated groundwater, and stabilize and dispose of solid and liquid radioactive wastes. Ten of these projects meet or nearly meet DOE's definition of major: costs exceeding $1 billion in the near term--usually a 5-year window of the project's total estimated life cycle. GAO was asked to determine the (1) extent to which the cost and schedule for DOE's major cleanup projects have changed and key reasons for changes, and (2) factors that may hinder DOE's ability to effectively manage these projects. GAO met with project directors and reviewed project documents for 10 major cleanup projects: 9 above the near-term $1 billion threshold, and 1 estimated to cost between $900 million and $1 billion over the near term."
Date: September 26, 2008
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Information Technology: DHS Needs to Enhance Management of Cost and Schedule for Major Investments (open access)

Information Technology: DHS Needs to Enhance Management of Cost and Schedule for Major Investments

A letter report issued by the Government Accountability Office with an abstract that begins "Approximately two-thirds of the Department of Homeland Security’s (DHS) major information technology (IT) investments are meeting their cost and schedule commitments (i.e., goals). Specifically, out of 68 major IT investments in development, 47 were meeting cost and schedule commitments. The remaining 21—which total about $1 billion in spending—had one or more subsidiary projects that were not meeting cost and/or schedule commitments (i.e., they exceeded their goals by at least 10 percent, which is the level at which the Office of Management and Budget (OMB) considers projects to be at increased risk of not being able to deliver planned capabilities on time and within budget.)"
Date: September 26, 2012
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Defense Travel System: Reported Savings Questionable and Implementation Challenges Remain (open access)

Defense Travel System: Reported Savings Questionable and Implementation Challenges Remain

A letter report issued by the Government Accountability Office with an abstract that begins "In 1995, the Department of Defense (DOD) began an effort to implement a standard departmentwide travel system. The Defense Travel System (DTS) is envisioned as DOD's standard end-to-end travel system. This report is a follow-up to GAO's January 2006, report which highlighted DTS implementation problems. Because of continued congressional interest in DTS, GAO initiated this follow-up audit under the Comptroller General's statutory authority. GAO determined whether (1) two key assumptions made in the September 2003 economic analysis were reasonable, (2) DOD is taking action to ensure full utilization of DTS and gathering the data needed to monitor DTS utilization, and (3) DOD has resolved the previously identified problems with DTS flight information. To address the above objectives, GAO (1) reviewed the September 2003 DTS economic analysis, (2) analyzed DTS utilization data, and (3) analyzed DTS flight information."
Date: September 26, 2006
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Pediatric Drug Research: Food and Drug Administration Should More Efficiently Monitor Inclusion of Minority Children (open access)

Pediatric Drug Research: Food and Drug Administration Should More Efficiently Monitor Inclusion of Minority Children

A letter report issued by the General Accounting Office with an abstract that begins "Drug effectiveness and adverse events can vary between children and adults and among racial and ethnic groups. The Food and Drug Administration (FDA) is authorized under the pediatric exclusivity provision to grant drug sponsors 6 months of additional exclusive marketing rights for conducting clinical drug studies in children. The Best Pharmaceuticals for Children Act of 2002 (BPCA) expanded this provision to require FDA to take into account the adequacy of minority representation in pediatric exclusivity studies. BPCA also directed GAO to evaluate the representation of minorities in such studies. GAO examined the extent to which minority children are represented, whether drugs that treat diseases disproportionately affecting minority groups are studied under the provision, and FDA's monitoring of the representation of minority children in the studies. GAO reviewed related FDA documents, FDA requests for pediatric studies and final study results, and interviewed FDA officials and other experts."
Date: September 26, 2003
Creator: United States. General Accounting Office.
System: The UNT Digital Library
Debt Management: Backup Funding Options Would Enhance Treasury's Resilience to a Financial Market Disruption (open access)

Debt Management: Backup Funding Options Would Enhance Treasury's Resilience to a Financial Market Disruption

A letter report issued by the Government Accountability Office with an abstract that begins "The September 11, 2001, attacks significantly affected the financial markets that the U.S. Treasury (Treasury) relies on. To understand how Treasury could obtain funds during a future potential wide-scale financial market disruption GAO examined (1) steps Treasury and others took during the September 11 attacks and after to assure required debt obligations and payments were made on time and ensure liquidity in the markets, (2) major actions Treasury and others have taken since the attacks to increase the resiliency of the auction process, and (3) the opinions of relevant parties on the main design features of any backup funding options. We conducted interviews with Treasury officials and others and reviewed appropriate documents."
Date: September 26, 2006
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Defense Management: DOD Needs to Establish Clear Goals and Objectives, Guidance, and a Designated Budget to Manage Its Biometrics Activities (open access)

Defense Management: DOD Needs to Establish Clear Goals and Objectives, Guidance, and a Designated Budget to Manage Its Biometrics Activities

A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Defense (DOD), in its response to unconventional threats from terrorists, uses biometrics technologies that identify physical attributes, including fingerprints and iris scans. However, coordinating the development and implementation of biometrics and ensuring interoperability across DOD has been difficult to achieve. Biometrics also is an enabling technology for identity management, a concept that seeks to manage personally identifiable information to enable improved governmentwide sharing and analysis of identity information. GAO was asked to examine the extent to which DOD has established biometrics goals and objectives, implementing guidance for managing biometrics activities, and a designated budget. To address these objectives, GAO reviewed documentation, including DOD biometrics policy and directives, and interviewed key DOD officials involved with making policy and funding decisions regarding biometrics."
Date: September 26, 2008
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Public Transit: Transit Agencies' Use of Contracting to Provide Service (open access)

Public Transit: Transit Agencies' Use of Contracting to Provide Service

A letter report issued by the Government Accountability Office with an abstract that begins "Contracting is a prevalent means of providing transit services. About 61 percent of the 463 transit agencies responding to GAO's survey reported they contract out some or all operations and services, while the rest reported that they do not contract out at all. According to GAO's survey, paratransit (services for the disabled), demand response (also known as dial-a-ride), and commuter rail service are most often contracted out, and fixed-route bus, heavy rail, and light rail service are most often operated by the transit agency. Operations are most frequently contracted out, followed by maintenance services. Transit agencies most consistently cite reducing costs as a factor influencing their decision to contract. Contracting can reduce costs because contractors' workforces are more flexible, with more employees working in part-time positions, and lower insurance costs, among other things. Transit agencies also frequently cited starting new service, improving efficiency, and allowing for more flexible service as reasons for contracting. State laws are generally not a reason for contracting, according to GAO's survey. Transit agencies that do not contract most often cited one of these three reasons: desire to maintain control over operations, …
Date: September 26, 2013
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Energy Efficiency: Opportunities Exist for Federal Agencies to Better Inform Household Consumers (open access)

Energy Efficiency: Opportunities Exist for Federal Agencies to Better Inform Household Consumers

A letter report issued by the Government Accountability Office with an abstract that begins "Household energy use accounts for nearly one-fourth of all energy consumed in the United States, amounting to more than $200 billion per year spent by consumers. Recent increases in energy prices have heightened consumers' interest in making their households more energy efficient. To this end, the federal government manages two key efforts--EnergyGuide and Energy Star--to inform consumers about the energy consumed by certain household products. EnergyGuide is a mandatory labeling program created under the Energy Policy and Conservation Act of 1975 (EPCA) and administered by the Federal Trade Commission (FTC) with assistance from the Department of Energy (DOE). It requires manufacturers to label and prominently display information about the energy consumption and annual energy costs of 11 categories of household products. In recent years, manufacturers have used adhesive backed labels adhered to appliances and so-called "hang tags" loosely attached to the interior or exterior of appliances. In its August 2007 revisions to the rule, FTC, among other things, prohibited the use of hang tags on the exterior of appliances, but continues to allow them on the inside. The law requires retailers to provide this information in …
Date: September 26, 2007
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
DOD Financial Management: Improvements Are Needed in Antideficiency Act Controls and Investigations (open access)

DOD Financial Management: Improvements Are Needed in Antideficiency Act Controls and Investigations

A letter report issued by the Government Accountability Office with an abstract that begins "Senate Report No. 110-77 directed GAO to review the Department of Defense's (DOD) procedures for Antideficiency Act (ADA) violations. GAO focused on whether (1) existing DOD funds control systems, processes, and internal controls provide reasonable assurance that ADA violations will be prevented or detected and whether key funds control personnel are trained; (2) investigations of ADA violations are processed in accordance with applicable DOD regulations; and (3) DOD tracks and reports metrics pertaining to its ADA investigations and what disciplinary actions are taken when ADA violations have occurred. GAO's review included all 54 ADA military service case files closed in fiscal years 2006 and 2007. GAO did not assess the appropriateness of the conclusions reached or of the disciplinary actions taken for the ADA cases."
Date: September 26, 2008
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Defense Acquisitions: Navy Strategy for Unmanned Carrier-Based Aircraft System Defers Key Oversight Mechanisms (open access)

Defense Acquisitions: Navy Strategy for Unmanned Carrier-Based Aircraft System Defers Key Oversight Mechanisms

A letter report issued by the Government Accountability Office with an abstract that begins ""
Date: September 26, 2013
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Financial Management: Improvements Under Way but Serious Financial Systems Problems Persist (open access)

Financial Management: Improvements Under Way but Serious Financial Systems Problems Persist

A letter report issued by the Government Accountability Office with an abstract that begins "The ability to produce the financial information needed to efficiently and effectively manage the day-today operations of the federal government and provide accountability to taxpayers continues to be a challenge for most federal agencies. To help address this challenge, the Federal Financial Management Improvement Act of 1996 (FFMIA) requires the Chief Financial Officers (CFO) Act agencies to implement and maintain financial management systems that comply substantially with (1) federal financial management systems requirements, (2) federal accounting standards, and (3) the U.S. Government Standard General Ledger at the transaction level. FFMIA also requires GAO to report annually on the implementation of the act."
Date: September 26, 2006
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Organizational Transformation: Military Departments Can Improve Their Enterprise Architecture Programs (open access)

Organizational Transformation: Military Departments Can Improve Their Enterprise Architecture Programs

A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Defense (DOD) spends billions of dollars annually to build and maintain information technology (IT) systems intended to support its mission. For decades, DOD has been challenged in modernizing its systems environment to reduce duplication and increase integration. Such modernizations can be guided by an enterprise architecture--a blueprint that describes an organization's current and target state for its business operations and supporting IT systems and a plan for transitioning between the two states. DOD has long sought to employ enterprise architectures and has defined an approach for doing so that depends in large part on the military departments developing architectures of their own. In light of the critical role that military department enterprise architectures play in DOD's overall architecture approach, GAO was requested to assess the status of the Departments of the Air Force, Army, and Navy (DON) enterprise architecture programs. To do so, GAO obtained and analyzed key information about each department's architecture relative to the 59 core elements contained in stages 1 through 6 of GAO's Enterprise Architecture Management Maturity Framework."
Date: September 26, 2011
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Prepositioned Stocks: Inconsistencies in DOD's Annual Report Underscore the Need for Overarching Strategic Guidance and Joint Oversight (open access)

Prepositioned Stocks: Inconsistencies in DOD's Annual Report Underscore the Need for Overarching Strategic Guidance and Joint Oversight

A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Defense (DOD) provided information on all 12 required reporting elements in its fiscal year 2012 prepositioning report; however, 3 of these elements were only partially addressed. For example, DOD provided a list of non-standard items slated for inclusion in its prepositioned stocks but did not include a specific plan for funding those items as required by the law. Federal internal control standards state that decision makers need complete and relevant information to manage risks and achieve efficiency and effectiveness goals. However, GAO found that DOD's report contained some inconsistencies in information across the services as well as several inaccuracies and omissions. For example, DOD's report included funding information for 6 or 7 fiscal years for most of the services but only 2 fiscal years for the Navy's stocks. Service information was also presented in different formats in the report, which makes it difficult to compare data. Because the Joint Staff did not provide specific guidance to the services to ensure consistency when requesting data, the services adopted separate approaches to reporting information to the Joint Staff for compilation in the report. In addition, …
Date: September 26, 2013
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Defense Acquisitions: Sound Business Case Needed to Implement Missile Defense Agency's Targets Program (open access)

Defense Acquisitions: Sound Business Case Needed to Implement Missile Defense Agency's Targets Program

A letter report issued by the Government Accountability Office with an abstract that begins "The Missile Defense Agency (MDA) is likely to spend $460 million annually on missiles used as targets for flight tests. Executing these tests depends on the quality and availability of targets. Congress asked GAO to assess (1) if MDA is providing reliable targets; (2) the causes of any deficiencies; and (3) if resolutions exist for any problems identified. To do this, GAO analyzed acquisition policies and procedures; flight test data; and budget, program execution, and acquisition materials; and interviewed MDA and DOD officials."
Date: September 26, 2008
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
IRS 2014 Budget: Improvements Made to Budget Request and Cost Estimate, but Further Actions Needed (open access)

IRS 2014 Budget: Improvements Made to Budget Request and Cost Estimate, but Further Actions Needed

A letter report issued by the Government Accountability Office with an abstract that begins "For the fiscal year 2014 budget formulation process, the Internal Revenue Service (IRS) implemented a new process that uses templates to help screen, prioritize, and select new initiatives before detailed business cases are developed to support funding requests. The template information that GAO reviewed varied in detail and scope; for some, IRS guidance may have contributed to incomplete submissions to senior leadership. According to Office of Management and Budget Circular A-94, in order to evaluate and compare funding initiatives, decision-makers need to be aware of benefits, costs, and strategies related to achieving program goals. By improving guidance on the type of data to include, IRS could help ensure the templates are fully completed."
Date: September 26, 2013
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Financial Management Service: Significant Weaknesses in Computer Controls (open access)

Financial Management Service: Significant Weaknesses in Computer Controls

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a legislative requirement, GAO provided information on the Financial Management Service's (FMS) computer controls in fiscal year (FY) 1999, focusing on: (1) the significant weaknesses GAO identified in its limited official use report and the recommendations that GAO had made; and (2) a follow-up on previously reported weaknesses."
Date: September 26, 2000
Creator: United States. General Accounting Office.
System: The UNT Digital Library