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1,365 Matching Results

Start Over Year 2001 Month December Language English

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Results: 1 - 24 of 1,365 next

(open access)

O(N) real-space method for ab initio quantum transport calculations: Application to carbon nanotube - metal contacts

Article on O(N) real-space method for ab initio quantum transport calculations and application to carbon nanotube-metal contacts.

Date: December 10, 2001

Creator: Buongiorno Nardelli, Marco; Fattebert, Jean-luc & Bernholc, Jerry

Object Type: Article

System: The UNT Digital Library

(open access)

Southwest Retort, Volume 54, Number 4, December 2001

This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.

Date: December 2001

Creator: American Chemical Society. Dallas/Fort Worth Section.

Object Type: Journal/Magazine/Newsletter

System: The UNT Digital Library

(open access)

Property Management Systems Requirements: Checklist for Reviewing Systems Under the Federal Financial Management Improvement Act (Supersedes GAO-01-554G)

Guidance issued by the General Accounting Office with an abstract that begins "This publication supersedes GAO-01-554G, Property Management Systems Requirements: Checklist for Reviewing Systems Under the Federal Financial Management Improvement Act (Exposure Draft), June 2001. The Joint Financial Management Improvement Program's Property Management Systems Requirements assist (1) agencies implement and monitor their property management systems and (2) managers and auditors review agency property management systems to determine if they substantially comply with the Federal Financial Management Improvement Act. This checklist is provided as a tool for use by experienced staff and is one in a series of documents issued by GAO to help agencies improve or maintain effective operations."

Date: December 1, 2001

Creator: United States. General Accounting Office.

Object Type: Text

System: The UNT Digital Library

(open access)

NNSA Management: Progress in the Implementation of Title 32

Correspondence issued by the General Accounting Office with an abstract that begins "GAO reviewed the National Nuclear Security Administration's (NNSA) progress in implementing key components of Title 32 of the National Defense Authorization Act for Fiscal Year 2000 including NNSA's reorganization efforts; integrated planning, programming, and budgeting improvements; use of its excepted service personnel authority; and efforts to improve its procurement practices. GAO found that although NNSA announced a new headquarters organization in May 2001, the reorganization did not clearly define the roles and responsibilities of the headquarters organizational units and did not address NNSA's field organization at all. More importantly, NNSA still lacks an overall organizational structure that clearly addresses long-standing issues such as the division of roles and responsibilities among headquarters offices and between headquarters and field staff. NNSA lost some momentum during the summer of 2001 as it reevaluated its efforts to develop a new planning, programming, budgeting, and evaluation process. NNSA now has established a conceptual process and begun to develop the necessary implementation plans and procedures. However, because of the broad scope of the work needed to develop these plans and procedures, it will be difficult to fully implement NNSA's process in time for the …

Date: December 12, 2001

Creator: United States. General Accounting Office.

Object Type: Text

System: The UNT Digital Library

(open access)

Proposed Alliance Between American Airlines and British Airways Raises Competition Concerns and Public Interest Issues

Correspondence issued by the General Accounting Office with an abstract that begins "As part of their plan to form an international alliance, American Airlines (AA) and British Airways (BA) have sought immunity from antitrust laws in the United States and Europe. The extent to which the alliance might come to dominate the routes between major U.S. cities and London will depend on whether other airlines are able to enter this market under an open skies agreement. Some passengers may benefit from the larger network created by an AA/BA alliance, but GAO believes that the overall benefits of such an alliance may be limited for several reasons. First, continuing constraints in slots, gates, and terminal facilities at London's Heathrow Airport and BA's corporate strategy for reducing its overall capacity would limit potential benefits. Second, several carriers are already serving many of the markets that the AA/BA alliance plans to serve. Third, neither AA nor BA claim that the alliance would generate substantial operational savings that could be passed on to stockholders, employees, and customers. A full review of the competitive effects of this and other alliances is needed because GAO's analysis suggests that a grant of antitrust immunity could enable the …

Date: December 21, 2001

Creator: United States. General Accounting Office.

Object Type: Text

System: The UNT Digital Library

(open access)

Inspectors General: Department of Defense IG Peer Reviews

Correspondence issued by the General Accounting Office with an abstract that begins "The 1997 peer review of the Department of Defense (DOD) Inspector General (IG) done by the Environmental Protection Agency IG resulted in a qualified opinion. The peer review report questioned the quality assurance system used by the DOD IG and said that the reviewed audits did not fully comply with Government Auditing Standards. The 2000 peer review done by the Department of the Treasury IG for Tax Administration (TIGTA) also resulted in a unqualified opinion. Although TIGTA cited several problems, the peer review report concluded that the quality assurance system used by the DOD IG reasonably ensured compliance with auditing standards. However, after the peer review had been completed, a letter was sent to Congress, the press, and others questioning the integrity of the documentation that the DOD IG provided to the TIGTA peer review staff. A DOD IG internal investigation later confirmed that the work papers for one of the audits chosen for peer review had been altered and destroyed. The report concluded that these actions violated Government Auditing Standards, internal DOD IG audit policies, and the expectations of the external peer review staff. TIGTA then withdrew …

Date: December 20, 2001

Creator: United States. General Accounting Office.

Object Type: Text

System: The UNT Digital Library

(open access)

GSA On-line Procurement Programs Lack Documentation and Reliability Testing

Correspondence issued by the General Accounting Office with an abstract that begins "The General Services Administration's (GSA) two online procurement systems--GSA Advantage! and information Technology Solutions Shop--lack basic management controls to ensure the systems produce reliable data, can not be inappropriately modified, and provide continuous service. These controls are increasingly important because government agencies are expected to increase their use of these systems and GSA relies heavily on contractors for systems operations and maintenance. Moreover, Congress and other oversight entities need to be able to rely on these systems to assess the effectiveness of government contracting programs."

Date: December 21, 2001

Creator: United States. General Accounting Office.

Object Type: Text

System: The UNT Digital Library

(open access)

Check Relay: Controls in Place Comply With Federal Reserve Guidelines

A letter report issued by the General Accounting Office with an abstract that begins "This report discusses the management of the air transportation network used to move checks from one Federal Reserve office to another. GAO studied the propriety of practices for bidding, awarding, and monitoring contracts and the adequacy of controls to monitor fuel and other payments to vendors. The network was moved to the Federal Reserve Bank of Atlanta (FRB Atlanta) in September 1998 and renamed Check Relay. Check Relay's internal controls are designed to ensure that each step of the contract evaluation and approval process conforms to FRB Atlanta and Federal Reserve System policies and that appropriate senior officials review and approve contract terms. Check Relay also ensures that all payments to vendors conform to contract terms. Another set of controls verifies that the amount of fuel used by Check Relay's vendors is consistent with expected levels and that fuel is provided only to the appropriate recipients. Check Relay is managed as a unit of the Retail Payments Office, which is managed out of FRB Atlanta. The Board's Division of Reserve Bank Operations and Payment Systems also has oversight responsibility over Check Relay. GAO found no evidence …

Date: December 12, 2001

Creator: United States. General Accounting Office.

Object Type: Report

System: The UNT Digital Library

(open access)

U.S. Postal Service: Update on E-Commerce Activities and Privacy Protections

A letter report issued by the General Accounting Office with an abstract that begins "Management of the U.S. Postal Service's (USPS) e-commerce program has been fragmented, and implementation of e-commerce initiatives has varied at different business units. Overall, USPS' performance in this area has fallen short of expectations. Last year, the Postmaster General announced a sweeping management restructuring that changed both the reporting structure and program managers. USPS also revised its procedures for approving and implementing new Internet initiatives, including e-commerce. However, concerns persist about whether USPS' e-commerce initiatives are being cross-subsidized by other postal products and services. USPS managers contend that e-commerce products and services must cover their incremental costs. GAO found that this goal has not been met and it is unclear when it might be achieved. Without accurate, complete, and consistent financial information, USPS cannot assess its progress toward its financial performance goals for e-commerce. USPS also lacks clear and comprehensive policies and procedures for reporting direct and indirect revenues and costs for e-commerce and other new products and services. As a result, reporting inconsistencies are likely to continue. In contrast, USPS has reportedly developed privacy policies and practices for its e-commerce customers that exceed those required …

Date: December 21, 2001

Creator: United States. General Accounting Office.

Object Type: Report

System: The UNT Digital Library

(open access)

Capitol Preservation Commission Attestation Engagement

Correspondence issued by the General Accounting Office with an abstract that begins "The United States Capitol Preservation Commission receives commemorative coin surcharge funds authorized by the United States Capitol Visitor Center Commemorative Coin Act of 1999. Under the Omnibus Consolidated Appropriations Act of 1997 and the U.S. Mint's Compliance Procedures for Surcharge Eligibility, the commission must meet certain requirements before receiving available coin surcharge funds. The commission must provide the U.S. Mint with eligibility-related assertions associated with the commission's receipt and use of private matching funds, and an independent auditor must examine the assertions. GAO found that the assertion about the commission's receipt and use of private matching funds pursuant to the law and the U.S. Mint's Compliance Procedures for Surcharge Eligibility are fairly stated in all respects."

Date: December 12, 2001

Creator: United States. General Accounting Office.

Object Type: Text

System: The UNT Digital Library

Texas Annexation and the Presidential Election of 1844 in the Richmond, Virginia, and New Orleans, Louisiana, Newspaper

Access: Use of this item is restricted to the UNT Community

This thesis examines the issue of Texas annexation from the viewpoints of two southern cities: Richmond, Virginia, and New Orleans, Louisiana. It looks primarily at four major newspapers, two in each city: the Richmond Enquirer and the Richmond Whig; and the New Orleans Times-Picayune and the New Orleans Whig. These four newspapers were examined thoroughly from January 1844 to July 1845. In addition to the above newspapers, the Congressional Globe and national voting patterns on Texas annexation were examined. Analysis of the editorial articles in the above newspapers offers the best possibility of understanding public sentiment toward Texas annexation and the presidential election of 1844. The evidence examined in this study indicates that Texas annexation became a decisive issue in the presidential election of 1844. It also shows that, although the press and elements within both Democratic and Whig parties were aware that the slavery question was intricately linked to the Texas annexation issue, slavery and sectional politics were not the primary factors influencing annexation. Ultimately, fundamental concerns regarding western expansion in general, especially for the Whigs, and political party loyalty proved the decisive factors in the presidential election of 1844 and Texas annexation. The evidence gathered in this study …

Date: December 2001

Creator: Short, Steven W.

Object Type: Thesis or Dissertation

System: The UNT Digital Library

Characterizaton of Triethoxyfluorosilane and Tetraethoxysilane Based Aerogels

Access: Use of this item is restricted to the UNT Community

Aerogels are highly porous, low dielectric constant (low k) materials being considered by the semiconductor industry as an interlayer dielectric. Low k materials are needed to overcome capacitance problems that limit device feature sizes. Precursors triethoxyfluorosilane (TEFS) and tetraethoxysilane (TEOS) were used to prepare bulk aerogels. Samples were prepared by sol-gel methods, and then carbon dioxide supercritically-dried. Effects of varying the water to precursor ratio were studied with respect to aerogel properties and microstructure. Methods of analysis for this study include FTIR-ATR, TEM, RBS, EDS, SEM, dielectric constant determination by impedance and surface area by gas adsorption. Si-F bonds were determined to be present in both acid- and base-catalyzed TEFS as well as HF-catalyzed TEOS. Fluorine promotes a fractal network microstructure as opposed to a particle-like microstructure. Surface area and dielectric constant were determined to increase slightly with increases in the water to precursor ratio.

Date: December 2001

Creator: Roepsch, Jodi Ann

Object Type: Thesis or Dissertation

System: The UNT Digital Library

(open access)

Inspectors General: Department of Defense IG Peer Reviews

Date: December 21, 2001

Creator: United States. General Accounting Office.

Object Type: Text

System: The UNT Digital Library

A meta-analysis of service learning research in middle and high schools.

Access: Use of this item is restricted to the UNT Community

This study examines the relationship between service learning innovations and improved academics, self-concept, and social or personal growth in middle and high school students. Meta-Analysis is employed to arrive at effect-size estimates for each construct. A historical overview of service learning is presented and a detailed description of the study selection process is provided. The data revealed a moderate relationship between service learning participation and academics, self-concept and social or personal growth in middle and high school students. The findings are presented, and some appropriate conclusions are drawn. A discussion of the implications of these findings and recommendations for future research are also provided.

Date: December 2001

Creator: White, Amy E.

Object Type: Thesis or Dissertation

System: The UNT Digital Library

Immediate and subsequent effects of fixed-time food presentations on automatically maintained mouthing.

Access: Use of this item is restricted to the UNT Community

Several studies have demonstrated that fixed-time (FT) schedules of stimulus delivery can function to reduce a variety of behaviors. The purpose of this study was to evaluate the immediate and subsequent effects of FT food deliveries on mouthing. In Phase 1, a preference assessment showed that caramel popcorn, chocolate cookies and pretzels were highly preferred food items. Thus, providing the basis for use of food items during treatment. In Phase 2, a functional analysis showed that mouthing was a nonsocially maintained problem behavior. Phase 3 demonstrated the use of FT schedules of food deliveries as treatment for nonsocially maintained mouthing. Results indicated that FT schedules of food significantly reduced mouthing. In addition, levels of mouthing observed during post-FT observations were reliably lower than pre-FT observations. Treatment effects, operative mechanisms responsible for the treatment effects and the experimental arrangement used to investigate varying FT schedules are discussed.

Date: December 2001

Creator: Simmons, Jason N.

Object Type: Thesis or Dissertation

System: The UNT Digital Library

Microwave Cavity Test for Superconductivity

Access: Use of this item is restricted to the UNT Community

The first part of this paper describes the Meissner effect in superconductors which serves as the most definitive evidence for superconductivity. It is shown that the microwave perturbation technique may be used to demonstrate this effect. By measuring the changes of resonant frequency and inverse quality factor Q of a microwave cavity with a small volume of sample loading, the Meissner effect can be shown by using the Slater perturbation equation. The experimental system is described with details and the basic principle of each component discussed. The second part of this work describes the technique employed to do the actual measurements. The experiments were conducted on samples of Gallium Arsenide (GaAs) and lead zirconate titanate (PZT) to look for the possible high temperature superconductivity properties. Results of these experiments are presented and discussed. Conclusion and suggestions to future exploration are made.

Date: December 2001

Creator: Tang, Shan

Object Type: Thesis or Dissertation

System: The UNT Digital Library

(open access)

Earned Income Tax Credit Eligibility and Participation

Correspondence issued by the General Accounting Office with an abstract that begins "The Earned Income Tax Credit (EIC), which is expected to provide more than $20 billion in refundable tax credits in fiscal year 2002, is intended to offset the burden of the Social Security payroll tax on low-income workers and encourage low-income individuals to work. About 75 percent of the 17.2 million eligible households have claimed the credit. GAO found that the participation rate varied by the number of qualifying children in the household. Participation rates for households with one or two qualifying children were 96 percent and 93 percent respectively. In contrast, the participation rate for households with three or more qualifying children was 62.5 percent. The participation rate for households with no qualifying children was 44.7 percent. Although qualifying households were eligible to claim $22.3 billion in EICs in 1999, the Internal Revenue Service estimates that participating households actually claimed $20.9 billion."

Date: December 14, 2001

Creator: United States. General Accounting Office.

Object Type: Text

System: The UNT Digital Library

(open access)

Joint FBI and Justice Investigation of Alleged Misconduct by Senior FBI Personnel in 1997 and Our Queries About the Possibility of Similar Misconduct in 2001

Correspondence issued by the General Accounting Office with an abstract that begins "This letter responds to allegations of improper conduct by senior Federal Bureau of Investigations (FBI) personnel in connection with an October 1997 retirement dinner for former FBI Assistant Director Larry Potts. The allegations asserted that a conference was scheduled at the FBI Training Academy in Quantico, Virginia, to provide a reason for senior FBI personnel to travel to Mr. Potts' retirement dinner in Arlington, Virginia, at government expense. GAO determined that the October 1997 FBI investigation of the alleged improper scheduling of a training conference was thorough. FBI and Justice Department investigators reviewed the actions of eight FBI Senior Executive Service (SES) employees. The FBI's Deputy Director issued letters of censure to three of the eight. Two individuals retired before receiving proposed letters of censure. The three remaining individuals were not disciplined because they either had attended both the training conference and the retirement dinner or had some other explanation for traveling to Washington, D.C. The FBI's Law Enforcement Ethics Unit did a study in September 1999 that concluded that a perception existed of a double standard in disciplining SES and non-SES employees. The travel cost to the …

Date: December 21, 2001

Creator: United States. General Accounting Office.

Object Type: Text

System: The UNT Digital Library

Teacher Practice, Curriculum, and Children's Moral Development in Buddhist Temple Preschools in Thailand

Access: Use of this item is restricted to the UNT Community

This study investigated what constitutes a moral development program in Buddhist temple preschools in Thailand. The researcher employed three qualitative methods: structured, in-depth interviews, observations of teachers' instruction, and document analysis of curriculum guides. Four Buddhist temple preschools were selected as the sites. Participants for interview included three abbots and one head nun, four principals, and twelve teachers. Participants for observations included four teachers of third year classes in each preschool. The study concentrated on four research questions: (a) what are the elements of the character education curriculum? (b) How do teachers teach moral development concepts and skills? (c) What are the teachers' perceptions of the moral development of third year preschoolers? (d) How do teachers assess their pupils' moral development? Key findings for the research questions were: character education was not a subject in the National Preschool Curriculum which was implemented in the Buddhist temple preschools. Core morality was integrated into every topic. The moral behaviors emphasized in the curriculum and the lesson plans included discipline, mindfulness, kindness, helpfulness, patience, honesty, respect, thriftiness, and politeness. The Buddhist concept of the process of moral development includes character education and meditation. The preschoolers were trained to pay respect to teachers and …

Date: December 2001

Creator: Phisalaphong, Rathdow

Object Type: Thesis or Dissertation

System: The UNT Digital Library

Topological uniqueness results for the special linear and other classical Lie Algebras.

Access: Use of this item is restricted to the UNT Community

Suppose L is a complete separable metric topological group (ring, field, etc.). L is topologically unique if the Polish topology on L is uniquely determined by its underlying algebraic structure. More specifically, L is topologically unique if an algebraic isomorphism of L with any other complete separable metric topological group (ring, field, etc.) induces a topological isomorphism. A local field is a locally compact topological field with non-discrete topology. The only local fields (up to isomorphism) are the real, complex, and p-adic numbers, finite extensions of the p-adic numbers, and fields of formal power series over finite fields. We establish the topological uniqueness of the special linear Lie algebras over local fields other than the complex numbers (for which this result is not true) in the context of complete separable metric Lie rings. Along the way the topological uniqueness of all local fields other than the field of complex numbers is established, which is derived as a corollary to more general principles which can be applied to a larger class of topological fields. Lastly, also in the context of complete separable metric Lie rings, the topological uniqueness of the special linear Lie algebra over the real division algebra of quaternions, …

Date: December 2001

Creator: Rees, Michael K.

Object Type: Thesis or Dissertation

System: The UNT Digital Library

Comparative Morphology of Sensilla Styloconica on the Proboscis of North American Nymphalidae and Other Selected Taxa: Systematic and Ecological Considerations.

Access: Use of this item is restricted to the UNT Community

Sensilla styloconica on the proboscis of 107 species of North American and tropical butterflies were comparatively studied using the scanning electron microscope. Focus was on 76 species of North American Nymphalidae representing 45 genera and 11 subfamilies. Nomenclature for generalized and specific types of nymphalid sensilla is proposed. Written descriptions and micrographs are presented for each species studied. Morphological features were generally consistent for all or most species within genera and sometimes within subfamilies, with specified exceptions. Statistical analysis revealed significant differences for six of eight variables tested between two distinct feeding guilds of North American Nymphalidae. Average number, density, extent of proboscis coverage with sensilla, their total length, and shoulder spine length were all significantly greater in the non-nectar feeding guild than in nectar feeders, and may indicate adaptation for greater efficiency in feeding on flat surfaces. The greater frequency of apical shoulder spines in non-nectar feeders may represent adaptation for protection of sensory pegs from mechanical abrasion during feeding, or for anchoring the flexible proboscis tip to the surface. Correlation analysis revealed 9 out of 28 positive correlations in nectar feeders and 5 out of 28 in non-nectar feeders. Results of preliminary cladistic analysis were not considered to …

Date: December 2001

Creator: Petr, Daniel

Object Type: Thesis or Dissertation

System: The UNT Digital Library

A Novel Phytoestrogen that Acts as an Agonist for Human Estrogen Receptors.

Access: Use of this item is restricted to the UNT Community

Estrogen is the natural agonist of the estrogen receptor (ER). However, certain plant-derived compounds or phytoestrogens have been identified that mimic estrogens and act as agonists and/or antagonists of ERs, depending on subtype and target tissue. Understanding how phytoestrogens interact with ERs, and therefore effect the estrogenic response, may prove beneficial in hormone replacement therapy and in the prevention and treatment of hormone-related diseases. Using Thin Layer Chromatography, gas chromatography/mass spectrometry (GC/MS), and proton nuclear nagnetic resonance (HNMR), I identified 4-ethoxymethylphenol (4EM) found in Maclura pomifera. While most phytoestrogens are heterocyclic compounds, 4EM is a simple phenol that acts as an agonist of ER-alpha and -beta in HeLa and MCF-7 cells. To study the effect of 4EM on ER-alpha and -beta activity, I performed transient transfection assays and showed that 4EM activates ER dependent gene transcription in a dose dependent manner in both ER subtypes. Further, 4EM- mediated transcription in ER-alpha, like estrogen, was enhance in the presense of co-activators, SRC-1 (steroid receptor coactivator-1), CBP (CREB binding proteins), and E6-AP (E6-associated protein) and inhibited by trans-4- hydroxytamoxifen (4HT). I found that 4EM was specific for ER and did not activate transcription of the progesterone receptor in HeLa cells.

Date: December 2001

Creator: Pearce, Virginia

Object Type: Thesis or Dissertation

System: The UNT Digital Library

(open access)

Survey Results of Selected Non-CFO Act Agencies' Views on Having Audited Financial Statements

Correspondence issued by the General Accounting Office with an abstract that begins "GAO surveyed 26 agencies not subject to the Chief Financial Officers Act of 1990. Overall, the surveyed agencies reported that they either achieved significant benefits or would anticipate achieving such benefits from having audited financial statements. The level of effort to prepare financial statements and prepare for an audit varied significantly with the size and other characteristics of the agencies. In determining whether agencies should prepare financial statements and have them audited, respondents identified a combination of factors to consider, including budget authority, key financial statement amounts, and the type of agency operations. Irrespective of the importance of such factors, 21 of the 26 agencies reported that federal agencies should have their financial statements audited."

Date: December 14, 2001

Creator: United States. General Accounting Office.

Object Type: Text

System: The UNT Digital Library

(open access)

Military Personnel: First-Term Personnel Less Satisfied With Military Life Than Those in Mid-Career

A letter report issued by the General Accounting Office with an abstract that begins "This report analyzes the Department of Defense's (DOD) 1999 survey of active duty personnel. GAO found that among first-term and mid-career personnel, satisfaction with military life and retention intent, which tend to increase with an individual's seniority, were important reasons for joining the armed forces. Among first-term enlisted personnel, education benefits and training for civilian employment were among the top reasons for joining. Mid-career personnel cited a desire to serve their country as one of the main reasons for joining, and these individuals said that they were likely to serve 20 years. Mid-career enlisted personnel and officers who joined for education benefits or for training for a specific occupation--skills that can be transferred to civilian jobs--said that they were more likely to leave the military. Base pay, the amount of personal/family leave time, and leadership quality were the main reasons cited by servicemembers for leaving the military. Servicemembers did, however, view some aspects of military life more favorable compared with civilian life, including vacation time, sense of accomplishment and pride, and education and training opportunities."

Date: December 6, 2001

Creator: United States. General Accounting Office.

Object Type: Report

System: The UNT Digital Library

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