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A PREDICTIVE MODEL OF NUCLEON-NUCLEUS SCATTERING CROSS SECTIONS (open access)

A PREDICTIVE MODEL OF NUCLEON-NUCLEUS SCATTERING CROSS SECTIONS

None
Date: August 1, 2001
Creator: AMOS, K.; DEB, P. & KARATAGLIDIS, S.
Object Type: Article
System: The UNT Digital Library
Partition of solutes from the gas phase and from water to wet and dry di-n-butyl ether: a linear free energy relationship analysis (open access)

Partition of solutes from the gas phase and from water to wet and dry di-n-butyl ether: a linear free energy relationship analysis

Article on the partition of solutes from the gas phase and from water to wet and dry di-n-butyl ether and a linear free energy relationship analysis.
Date: August 13, 2001
Creator: Abraham, M. H. (Michael H.); Zissimos, Andreas M. & Acree, William E. (William Eugene)
Object Type: Article
System: The UNT Digital Library
Wear and friction behavior of Zr implanted D3 steel (open access)

Wear and friction behavior of Zr implanted D3 steel

Multicharged, pure, high current and pulsed ion beams of Zr have been extracted from a metal vapor vacuum arc (MEVVA) source and implanted into AISI D3 (C: 2-2,35%, Mn: 0,60%, Si: 0,60%, Cr: 11-13,50%, Ni: 0,30%, W: 1%, V: 1%) tool steel samples at the 3,6.1016, 5.1016 and 1.1017 ions/cm2 doses. The wear resistance and friction coefficient have been estimated using pin-on-disc wear tests. Implantation of Zr decreased the wear loss and friction coefficient. RBS, AES and SEM Microprobe analyses were used as a guide for explanation of implantation's effects.
Date: August 23, 2001
Creator: Akbas, N.; Saklakoglu, I.E.; Monteiro, O.R. & Brown, I.G.
Object Type: Article
System: The UNT Digital Library
Problems Encountered in Money Laundering Investigations (open access)

Problems Encountered in Money Laundering Investigations

The purpose of this study is to identify how the U.S. is responding to money laundering and what kind of problems arise while countering it, beginning with a detailed description of money laundering, its stages, typologies, impacts, and complications. Due to the broad nature of this subject only three main issues form the focal point of this study: problems concerning the banking industry and other financial organizations, problems resulting from the limitations of law enforcement agencies, and problems arising from the lack of cooperation between and within financial institutions and law enforcement agencies. Several probable solutions to the above problems are identified: Considering the financial industry, there are loopholes in the Bank Secrecy Act (BSA) and in other regulations that apply to the industry. Thus, there is a comparison of the Subjective Model vs. Objective Model in terms of reporting systems for financial organizations. On the law enforcement side, the priority is the need to update and upgrade their technology and investigation mechanisms in order not to fall behind the criminals. Finally, cooperation is something that can be achieved through mutual respect and understanding of the priorities of each side, which can be achieved by the creation of an upper …
Date: August 2001
Creator: Akyay, Ilkay
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Investigation of Mixed Metal Sorbent/Catalysts for the Simultaneous Removal of Sulfur and Nitrogen Oxides (open access)

Investigation of Mixed Metal Sorbent/Catalysts for the Simultaneous Removal of Sulfur and Nitrogen Oxides

Simultaneous removal of SO{sub 2} and NO{sub x} using a regenerable solid sorbent will constitute an important improvement over the use of separate processes for the removal of these two pollutants from stack gases and possibly eliminate several shortcomings of the individual SO{sub 2} and NO{sub x} removal operations. The work done at PETC and the DOE-funded investigation of the investigators on the sulfation and regeneration of alumina-supported cerium oxide sorbents have shown that they can perform well at relatively high temperatures (823-900 K) as regenerable desulfurization sorbents. Survey of the recent literature shows that addition of copper oxide to ceria lowers the sulfation temperature of ceria down to 773 K, sulfated ceria-based sorbents can function as selective SCR catalysts even at elevated temperatures, SO{sub 2} can be directly reduced to sulfur by CO on CuO-ceria catalysts, and ceria-based catalysts may have a potential for selective catalytic reduction of NO{sub x} by methane. These observations indicate a possibility of developing a ceria-based sorbent/catalyst which can remove both SO{sub 2} and NO{sub x} from flue gases within a relatively wide temperature window, produce significant amounts of elemental sulfur during regeneration, and use methane for the selective catalytic reduction of NO{sub x}.
Date: August 1, 2001
Creator: Akyurtlu, Ates & Akyurtle, Jale F.
Object Type: Report
System: The UNT Digital Library
Computer Modeling of Saltstone Landfills by Intera Environmental Consultants (open access)

Computer Modeling of Saltstone Landfills by Intera Environmental Consultants

This report summaries the computer modeling studies and how the results of these studies were used to estimate contaminant releases to the groundwater. These modeling studies were used to improve saltstone landfill designs and are the basis for the current reference design. With the reference landfill design, EPA Drinking Water Standards can be met for all chemicals and radionuclides contained in Savannah River Plant waste salts.
Date: August 9, 2001
Creator: Albenesius, E.L.
Object Type: Report
System: The UNT Digital Library

Oral History Interview with Richard E. Cole, August 8, 2000

Access: Use of this item is restricted to the UNT Community
Interview with Army Air Forces veteran Richard E. Cole describing personal experiences about being Jimmy Doolittle's co-pilot during the Tokyo Raid on April 8, 1942, pre-war education, flight training, volunteering for a secret mission and meeting Colonel Doolittle, being assigned as Doolittle's co-pilot, mission training, various B-25 missions against Japanese targets in China and Burma, flying supplies over "The Hump." transferring to the states and volunteering for service in Burma with the 1st Air Commandos to support Wingate's Chindits and Merrill's Marauders, and reunions of Doolittle's Raiders the following war.
Date: August 8, 2001
Creator: Alexander, William J. & Cole, Richard E.
Object Type: Book
System: The UNT Digital Library
Assessing Risk of Innovation (open access)

Assessing Risk of Innovation

Today's manufacturing systems and equipment must perform at levels thought impossible a decade ago. Companies must push operations, quality, and efficiencies to unprecedented levels while holding down costs. In this new economy, companies must be concerned with market shares, equity growth, market saturation, and profit. U.S. manufacturing is no exception and is a prime example of businesses forced to adapt to constant and rapid changes in customer needs and product mixes, giving rise to the term ''Agile Manufacturing''. The survival and ultimate success of the American Manufacturing economy may depend upon its ability to create, innovate, and quickly assess the impact that new innovations will have on its business practices. Given the need for flexibility, companies need proven methods to predict and measure the impact that new technologies and strategies will have on overall plant performance from an enterprise perspective. The Value-Derivative Model provides a methodology and approach to assess such impacts in terms of energy savings, production increases, quality impacts, emission reduction, and maintenance and operating costs as they relate to enabling and emerging technologies. This is realized by calculating a set of first order sensitivity parameters obtained from expanding a Taylor Series about the system's operating point. These …
Date: August 15, 2001
Creator: Allgood, GO
Object Type: Article
System: The UNT Digital Library
LED-induced fluorescence diagnostics for turbine and combustion engine thermometry (open access)

LED-induced fluorescence diagnostics for turbine and combustion engine thermometry

Fluorescence from phosphor coatings is the basis of an established technique for measuring temperature in a wide variety of turbine and combustion engine applications. Example surfaces include blades, vanes, combustors, intake valves, pistons, and rotors. Many situations that are remote and noncontact require the high intensity of a laser to illuminate the phosphor, especially if the surface is moving. Thermometric resolutions of 0.1 C are obtainable, and some laboratory versions of these systems have been calibrated against NIST standards to even higher precision. To improve the measurement signal-to-noise ratio, synchronous detection timing has been used to repeatedly interrogate the same blade in a high speed rotating turbine. High spatial resolution can be obtained by tightly focusing the interrogation beam in measurements of static surfaces, and by precise differential timing of the laser pulses on rotating surfaces. We report here the use of blue light emitting diodes (LEDs) as a n illumination source for producing useable fluorescence from phosphors for temperature measurements. An LED can excite most of the same phosphors used to cover the temperature range from 8 to 1400 C. The advantages of using LEDs are obvious in terms of size, power requirements, space requirements and cost. There can …
Date: August 17, 2001
Creator: Allison, S. W.
Object Type: Article
System: The UNT Digital Library
Women in the United States Congress: 1917-2001 (open access)

Women in the United States Congress: 1917-2001

This report identifies the committee assignments, dates of service, and (for Representatives) districts of the 209 women Members of Congress.
Date: August 20, 2001
Creator: Amer, Mildred L.
Object Type: Report
System: The UNT Digital Library
The Newsletter of the Texas Chapter of the American Fisheries Society, Volume 27, Number 2, Summer 2001 (open access)

The Newsletter of the Texas Chapter of the American Fisheries Society, Volume 27, Number 2, Summer 2001

Newsletter of the Texas Chapter of the American Fisheries Society containing information about the organization, membership, and field of aquaculture and ecosystem management.
Date: August 2001
Creator: American Fisheries Society. Texas Chapter.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Reducing ion beam noise of vacuum arc ion sources (open access)

Reducing ion beam noise of vacuum arc ion sources

Vacuum arc ion sources are known for delivering high currents of metal ion beams. By Langmuir probe and Faraday cup measurements it is shown that fluctuations of the ion beam current are due to the fluctuations of plasma density which in turn are due to the explosive nature of plasma production at cathode spots. Humphries and co-workers and later Oks and co-workers have shown that beam fluctuations can be reduced by inserting biased meshes in the plasma. Here, the idea of ion extraction at kV-level with post-acceleration is investigated. The high voltage allows us to use coarse, ridged meshes or grids. The combination of an extractor operating in the overdense plasma regime with post-acceleration lead to very reproducible, practically ''noiseless'' ion beams however at the expense of low ion current density. The noise reduction is due to ion optics effects. Although the current setup is not suitable for a heavy ion fusion injector due to the low beam current and the risk of extractor voltage breakdown, further development of the concept may lead to reproducible beam pulses of sufficiently high current and brightness.
Date: August 29, 2001
Creator: Anders, Andre & Hollinger, Ralph
Object Type: Article
System: The UNT Digital Library

A Comparison of Five Robust Regression Methods with Ordinary Least Squares: Relative Efficiency, Bias and Test of the Null Hypothesis

Access: Use of this item is restricted to the UNT Community
A Monte Carlo simulation was used to generate data for a comparison of five robust regression estimation methods with ordinary least squares (OLS) under 36 different outlier data configurations. Two of the robust estimators, Least Absolute Value (LAV) estimation and MM estimation, are commercially available. Three authormodified variations on MM were also included (MM1, MM2, and MM3). Design parameters that were varied include sample size (n=60 and n=180), number of independent predictor variables (2, 3 and 6), outlier density (0%, 5% and 15%) and outlier location (2x,2y s, 8x8y s, 4x,8y s and 8x,4y s). Criteria on which the regression methods were measured are relative efficiency, bias and a test of the null hypothesis. Results indicated that MM2 was the best performing robust estimator on relative efficiency. The best performing estimator on bias was MM1. The best performing regression method on the test of the null hypothesis was MM2. Overall, the MM-type robust regression methods outperformed OLS and LAV on relative efficiency, bias, and the test of the null hypothesis.
Date: August 2001
Creator: Anderson, Cynthia, 1962-
Object Type: Thesis or Dissertation
System: The UNT Digital Library
John Graves and the Pastoral Tradition (open access)

John Graves and the Pastoral Tradition

John Graves's creative non-fiction has earned him respect in Texas letters as a seminal writer but scarce critical commentary of his work outside the region. Ecological criticism examines how language, culture and the land interact, providing a context in which to discuss Graves in relation to the southwestern literary tradition of J. Frank Dobie, Walter P. Webb, and Roy Bedichek, to southern pastoral in the Virgilian mode, and to American nature writing. Graves's rhetorical strategies, including his appropriation of form, his non-polemical voice, his experimentation with narrative persona, and his utilization of traditional tropes of metaphor, metonymy, and irony, establish him as a conservative and Romantic writer of place concerned with the friction between traditional agrarian values and the demands of late-twentieth-century urban/technological existence. Sequentially, Graves's three main booksGoodbye to a River (1960), Hard Scrabble (1974), and From a Limestone Ledge (1980)represent a movement from the pastoral mode of the outward journey and return to the more domestic world of georgic, from the mode of leisure and contemplation to the demands and rewards of hard work and ownership. As such they represent not only progression or maturation in the arc of the narrator's life but a desire to reconcile ideological …
Date: August 2001
Creator: Anderson, David Roy
Object Type: Thesis or Dissertation
System: The UNT Digital Library
The influence of sub-100 nm scattering on high-energy electron beam lithography (open access)

The influence of sub-100 nm scattering on high-energy electron beam lithography

None
Date: August 1, 2001
Creator: Anderson, Erik H.; Olynick, Deidre L.; Chao, Weilun; Harteneck, Bruce & Veklerov, Eugene
Object Type: Article
System: The UNT Digital Library

Barriers Limiting Access to Hospice Care for Elderly African Americans in Amarillo, Texas

Access: Use of this item is restricted to the UNT Community
This study examines barriers limiting access to hospice care for elderly African Americans. Ethnic background plays a critical role in the development of attitudes, beliefs and expectations related to death and issues surrounding hospice care. The purpose of this study was to identify barriers that may limit access to hospice care for African Americans. A questionnaire was administered to 56 elderly African Americans in three religious settings and an African American senior citizens center. The questionnaire was designed to obtain information concerning African Americans' attitudes toward death and dying; religious beliefs; health beliefs; familiarity with hospice and prospective use of hospice. The results of the study indicate a number of barriers in access to hospice care for African Americans including: hospice knowledge barriers; education/outreach barriers; cultural knowledge barriers related to death/dying values; family/social support barriers; hospice organizational/provider barriers; health care organizational/provider barriers; and reimbursement barriers.
Date: August 2001
Creator: Anthony, Tomagene
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Revisiting Eric Nordlinger: The Dynamics of Russian Civil- Military Relations in the Twentieth Century (open access)

Revisiting Eric Nordlinger: The Dynamics of Russian Civil- Military Relations in the Twentieth Century

This paper examines the role that military has played in the political development of the former Union of Soviet Socialist Republics and the modern Russian Federation. By utilizing the theoretical tenets of Eric Nordlinger, this paper endeavors to update and hopefully revise his classic work in civil-military relations, Soldiers in Politics. Chapter one of this paper introduces many of the main theoretical concepts utilized in this analysis. Chapter two considers the Stalinist totalitarian penetration model that set the standard for communist governments around the world. Chapter three follows up by addressing the middle years of Khrushchev and Brezhnev. Both reformed the military in its relation to the party and state and made the armed forces a more corporate and professional institution. Chapter four pinpoints the drastic changes in both the state and armed forces during Gorbachev's perestroika and glasnost. The military briefly ventured to a point it never gone before by launching a short coup against the last Soviet president. Chapter five focuses on the last ten years in the Russian Federation. While still a professional organization typical of the liberal model of civil-military relations, the armed forces face great uncertainty, as economic and social problems demand more of their …
Date: August 2001
Creator: Ardovino, Michael
Object Type: Thesis or Dissertation
System: The UNT Digital Library

Bricktown

Photograph of the Bricktown Ballpark Wall Mural.
Date: August 8, 2001
Creator: Argo, Jim
Object Type: Photograph
System: The Gateway to Oklahoma History

Bricktown

Photograph of the Johnny Bench statue in front of the Bricktown Ballpark.
Date: August 8, 2001
Creator: Argo, Jim
Object Type: Photograph
System: The Gateway to Oklahoma History

Bricktown

Photograph of the Bricktown Ballpark Wall Mural.
Date: August 8, 2001
Creator: Argo, Jim
Object Type: Photograph
System: The Gateway to Oklahoma History

Bricktown

Photograph of the Johnny Bench statue in front of the Bricktown Ballpark.
Date: August 8, 2001
Creator: Argo, Jim
Object Type: Photograph
System: The Gateway to Oklahoma History

Bricktown

Photograph of the Bricktown Ballpark Wall Mural.
Date: August 8, 2001
Creator: Argo, Jim
Object Type: Photograph
System: The Gateway to Oklahoma History

Bricktown

Photograph of the Johnny Bench statue in front of the Bricktown Ballpark.
Date: August 8, 2001
Creator: Argo, Jim
Object Type: Photograph
System: The Gateway to Oklahoma History

Bricktown

Photograph of the Johnny Bench statue in front of the Bricktown Ballpark.
Date: August 8, 2001
Creator: Argo, Jim
Object Type: Photograph
System: The Gateway to Oklahoma History