Partner
UNT Libraries Government Documents Department
908
UNT Libraries
251
UNT Libraries Special Collections
159
Oklahoma Historical Society
101
National Museum of the Pacific War/Admiral Nimitz Foundation
34
Sweetwater/Nolan County City-County Library
25
Sterling Municipal Library
21
UNT College of Information
20
UNT Music Library
12
Livingston Municipal Library
9
51 More
Collection
Office of Scientific & Technical Information Technical Reports
589
Texas Digital Newspaper Program
257
Congressional Research Service Reports
173
UNT Theses and Dissertations
120
Oklahoma Digital Newspaper Program
113
Tocker Foundation Grant
77
University Records
77
Government Accountability Office Reports
76
The Greensheet
72
The Black Academy of Arts and Letters Records
60
98 More
Degree Department
Degree Discipline
Degree Level
Country
Year
Month
Results:
1 - 24 of
1,709
next
[5,10,15,20-Tetrakis(4-tolyl)porphyrin]-zinc(II) dichloromethane solvate
In the title complex, [Zn(C₄₈H₃₆N₄)]·CH₂Cl₂, the Znᴵᴵ atom lies on an inversion center and the dichloromethane solvent molecule is disordered around an inversion center.
Date:
May 26, 2010
Creator:
McGill, Sean; Nesterov, Vladimir N. & Gould, Stephanie L.
Object Type:
Article
System:
The UNT Digital Library
80 and 100 Meter Wind Energy Resource Potential for the United States (Poster)
Accurate information about the wind potential in each state is required for federal and state policy initiatives that will expand the use of wind energy in the United States. The National Renewable Energy Laboratory (NREL) and AWS Truewind have collaborated to produce the first comprehensive new state-level assessment of wind resource potential since 1993. The estimates are based on high-resolution maps of predicted mean annual wind speeds for the contiguous 48 states developed by AWS Truewind. These maps, at spatial resolution of 200 meters and heights of 60 to 100 meters, were created with a mesoscale-microscale modeling technique and adjusted to reduce errors through a bias-correction procedure involving data from more than 1,000 measurement masts. NREL used the capacity factor maps to estimate the wind energy potential capacity in megawatts for each state by capacity factor ranges. The purpose of this presentation is to (1) inform state and federal policy makers, regulators, developers, and other stakeholders on the availability of the new wind potential information that may influence development, (2) inform the audience of how the new information was derived, and (3) educate the audience on how the information should be interpreted in developing state and federal policy initiatives.
Date:
May 1, 2010
Creator:
Elliott, D.; Schwartz, M.; Haymes, S.; Heimiller, D.; Scott, G.; Flowers, L. et al.
Object Type:
Article
System:
The UNT Digital Library
120-mm superconducting quadrupole for interaction regions of hadron colliders
Magnetic and mechanical designs of a Nb{sub 3}Sn quadrupole magnet with 120-mm aperture suitable for interaction regions of hadron colliders are presented. The magnet is based on a two-layer shell-type coil and a cold iron yoke. Special spacers made of a low-Z material are implemented in the coil mid-planes to reduce the level of radiation heat deposition and radiation dose in the coil. The quadrupole mechanical structure is based on aluminum collars supported by an iron yoke and a stainless steel skin. Magnet parameters including maximum field gradient and field harmonics, Nb3Sn coil pre-stress and protection at the operating temperatures of 4.5 and 1.9 K are reported. The level and distribution of radiation heat deposition in the coil and other magnet components are discussed.
Date:
May 1, 2010
Creator:
Zlobin, A. V.; Kashikhin, V.V.; Mokhov, N. V. & Novitski, I.
Object Type:
Article
System:
The UNT Digital Library
161 Glass: Site Specific Music in an Artistic Context
The composition 161 Glass is a 17-minute musical work with percussion, wind and brass instruments in which the intersection of mid-century architecture, and the art and culture of a dynamic city are inextricably linked. Through this paper, I explore the process of composing a musical work in relationship to the significance of site specific context. The paper begins by defining the concept of site specific art works; then reviews the discourse of the intersection of art, music and architecture. I then delve into the cultural and geographic context surrounding this project from the modern era through the present, and how those perspectives apply to the building and my piece. I reveal how the composition relates the musical ideas to the site. Finally, I describe the collaborative process between myself, the musicians and the Dallas Contemporary staff.
Date:
May 2010
Creator:
Rusnak, Christina S.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
500 MW X-BAND RF SYSTEM OF A 0.25 GEV ELECTRON LINAC FOR ADVANCED COMPTON SCATTERING SOURCE APPLICATION
A Mono-Energetic Gamma-Ray (MEGa-Ray) Compton scattering light source is being developed at LLNL in collaboration with SLAC National Accelerator Laboratory. The electron beam for the Compton scattering interaction will be generated by a X-band RF gun and a X-band LINAC at the frequency of 11.424 GHz. High power RF in excess of 500 MW is needed to accelerate the electrons to energy of 250 MeV or greater for the interaction. Two high power klystron amplifiers, each capable of generating 50 MW, 1.5 msec pulses, will be the main high power RF sources for the system. These klystrons will be powered by state of the art solid-state high voltage modulators. A RF pulse compressor, similar to the SLED II pulse compressor, will compress the klystron output pulse with a power gain factor of five. For compactness consideration, we are looking at a folded waveguide setup. This will give us 500 MW at output of the compressor. The compressed pulse will then be distributed to the RF gun and to six traveling wave accelerator sections. Phase and amplitude control are located at the RF gun input and additional control points along the LINAC to allow for parameter control during operation. This high …
Date:
May 12, 2010
Creator:
Chu, T S; Anderson, S G; Gibson, D J; Hartemann, F V; Marsh, R A; Siders, C et al.
Object Type:
Article
System:
The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 39, No. 27, Ed. 1 Friday, May 7, 2010
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
May 7, 2010
Creator:
Price, Racheal
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The 2010 Decennial Census: Background and Issues
The U.S. Constitution--Article 1, Section 2, clause 3, as modified by Section 2 of the Fourteenth Amendment--requires a population census every 10 years, to serve as the basis for reapportioning seats in the House of Representatives. Decennial census data also are used for within-state redistricting and in certain formulas that determine the annual distribution of more than $400 billion dollars in federal and state funds. This report discusses the major innovations that were planned for the 2010 census, problems encountered with the attempt to automate certain census field operations, the persistent differential census undercount of less advantaged groups in the population, and efforts to ensure an equitable census.
Date:
May 24, 2010
Creator:
Williams, Jennifer D.
Object Type:
Report
System:
The UNT Digital Library
The 2010 Decennial Census: Background and Issues
This report summarizes the information and background of the 2010 census. The report outlines what the census is and why it is necessary. Moreover, it describes the new methods used and the issues encountered by using those methods.
Date:
May 24, 2010
Creator:
Williams, Jennifer D.
Object Type:
Report
System:
The UNT Digital Library
2010 Non-Proliferation Treaty (NPT) Review Conference: Key Issues and Implications
The report includes a short summary of the provisions and goals of the Non-Proliferation Treaty (NPT) and a brief history of past review conferences. It also discusses the key issues that the participants are likely to address during the 2010 conference.
Date:
May 3, 2010
Creator:
Kerr, Paul K.; Nikitin, Mary Beth; Woolf, Amy F. & Medalia, Jonathan
Object Type:
Report
System:
The UNT Digital Library
21st Century Locomotive Technology: Quarterly Technical Status Report 29
Hybrid trip optimizer analysis tool has been implemented, to determine the optimal driving and hybrid charge-discharge control for a train.
Date:
May 24, 2010
Creator:
Lembit Salasoo, Ramu Chandra
Object Type:
Report
System:
The UNT Digital Library
4w Thomson Scattering Probe for High-density Measurements at Titan
None
Date:
May 10, 2010
Creator:
Ross, J. S.; Kline, J. L.; Yang, S.; Henesian, M.; Weiland, T.; Price, D. et al.
Object Type:
Article
System:
The UNT Digital Library
[Academia at Masters Commencement Ceremony]
Photograph of academic administrators and academia onstage at the May 2010 masters commencement ceremony at the University of North Texas, in Denton, Texas. They are dressed in black, green, blue, red and gold academic regalia. There are people seated in the background, watching the ceremony.
Date:
May 14, 2010
Creator:
Chaney, Ken
Object Type:
Photograph
System:
The Portal to Texas History
Accelerating the Payment of PACE Assessments By Mark Zimring and Merrian Fulle
The 'acceleration' of land-secured assessments allows municipalities to declare the entire value (not just the late payments) of a property owner's outstanding balance payable if a default occurs. State laws vary on whether acceleration is required, permitted, or prohibited. Acceleration can be attractive to bond investors because it strips out non-performing assessments, and may avoid delays in debt service payments to investors. The risk that non-acceleration will negatively impact bond investors is a particular issue in states without a process for rapidly resolving defaults. However, acceleration may also increase the risk to mortgage holders, as the full amount of the outstanding assessment becomes due and traditionally has priority over other lien holders. Acceleration also places a greater burden on the property owner.
Date:
May 4, 2010
Creator:
Zimring, Mark & Fuller, Merrian
Object Type:
Report
System:
The UNT Digital Library
Accelerator neutrino program at Fermilab
The accelerator neutrino programme in the USA consists primarily of the Fermilab neutrino programme. Currently, Fermilab operates two neutrino beamlines, the Booster neutrino beamline and the NuMI neutrino beamline and is the planning stages for a third neutrino beam to send neutrinos to DUSEL. The experiments in the Booster neutrino beamline are miniBooNE, SciBooNE and in the future microBooNE, whereas in the NuMI beamline we have MINOS, ArgoNut, MINERVA and coming soon NOvA. The major experiment in the beamline to DUSEL will be LBNE.
Date:
May 1, 2010
Creator:
Parke, Stephen J.
Object Type:
Article
System:
The UNT Digital Library
Access to Broadband Networks: The Net Neutrality Debate
This report discusses the current debate over "net neutrality." While there is no single accepted definition of "net neutrality," most agree that any such definition should include the general principles that owners of the networks that compose and provide access to the Internet should not control how consumers lawfully use that network, and they should not be able to discriminate against content provider access to that network.
Date:
May 6, 2010
Creator:
Gilroy, Angele A.
Object Type:
Report
System:
The UNT Digital Library
Accurate simulation of the electron cloud in the Fermilab Main Injector with VORPAL
Precision simulations of the electron cloud at the Fermilab Main Injector have been studied using the plasma simulation code VORPAL. Fully 3D and self consistent solutions that includes E.M. field maps generated by the cloud and the proton bunches have been obtained, as well detailed distributions of the electron's 6D phase space. We plan to include such maps in the ongoing simulation of the space charge effects in the Main Injector. Simulations of the response of beam position monitors, retarding field analyzers and microwave transmission experiments are ongoing.
Date:
May 1, 2010
Creator:
Lebrun, Paul L.G.; Spentzouris, Panagiotis; Cary, John R.; Stoltz, Peter & Veitzer, Seth A.
Object Type:
Article
System:
The UNT Digital Library
Activities and Experiences of Academic Librarians Embedded in Online Courses
Presentation for the 2010 Qualitative and Quantitative Methods in Libraries (QQML) Conference. This presentation discusses activities and experiences of academic librarians embedded in online courses and common practices to assess various experiences.
Date:
May 2010
Creator:
Hoffman, Starr
Object Type:
Presentation
System:
The UNT Digital Library
Adagio 4.16 user<U+2019>s guide.
Adagio is a three-dimensional, implicit solid mechanics code with a versatile element library, nonlinear material models, and capabilities for modeling large deformation and contact. Adagio is a parallel code, and its nonlinear solver and contact capabilities enable scalable solutions of large problems. It is built on the SIERRA Framework [1, 2]. SIERRA provides a data management framework in a parallel computing environment that allows the addition of capabilities in a modular fashion. The Adagio 4.16 User's Guide provides information about the functionality in Adagio and the command structure required to access this functionality in a user input file. This document is divided into chapters based primarily on functionality. For example, the command structure related to the use of various element types is grouped in one chapter; descriptions of material models are grouped in another chapter. The input and usage of Adagio is similar to that of the code Presto [3]. Presto, like Adagio, is a solid mechanics code built on the SIERRA Framework. The primary difference between the two codes is that Presto uses explicit time integration for transient dynamics analysis, whereas Adagio is an implicit code. Because of the similarities in input and usage between Adagio and Presto, the …
Date:
May 1, 2010
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Adaptation of the Biolog Phenotype MicroArrayTM Technology to Profile the Obligate Anaerobe Geobacter metallireducens
The Biolog OmniLog? Phenotype MicroArray (PM) plate technology was successfully adapted to generate a select phenotypic profile of the strict anaerobe Geobacter metallireducens (G.m.). The profile generated for G.m. provides insight into the chemical sensitivity of the organism as well as some of its metabolic capabilities when grown with a basal medium containing acetate and Fe(III). The PM technology was developed for aerobic organisms. The reduction of a tetrazolium dye by the test organism represents metabolic activity on the array which is detected and measured by the OmniLog(R) system. We have previously adapted the technology for the anaerobic sulfate reducing bacterium Desulfovibrio vulgaris. In this work, we have taken the technology a step further by adapting it for the iron reducing obligate anaerobe Geobacter metallireducens. In an osmotic stress microarray it was determined that the organism has higher sensitivity to impermeable solutes 3-6percent KCl and 2-5percent NaNO3 that result in osmotic stress by osmosis to the cell than to permeable non-ionic solutes represented by 5-20percent ethylene glycol and 2-3percent urea. The osmotic stress microarray also includes an array of osmoprotectants and precursor molecules that were screened to identify substrates that would provide osmotic protection to NaCl stress. None of the …
Date:
May 17, 2010
Creator:
Joyner, Dominique; Fortney, Julian; Chakraborty, Romy & Hazen, Terry
Object Type:
Report
System:
The UNT Digital Library
Adaptive Advantages of Carotenoid Pigments in Alpine and Subalpine Copepod Responses to Polycyclic Aromatic Hydrocarbon Induced Phototoxicity
Alpine zooplankton are exposed to a variety of stressors in their natural environment including ultraviolet radiation. Physiological coping mechanisms such as the accumulation of photoprotective compounds provide these zooplankton protection from many of these stressors. Elevated levels of carotenoid compounds such as astaxanthin have been shown to help zooplankton survive longer when exposed to ultraviolet radiation presumably due to the strong antioxidant properties of carotenoid compounds. This antioxidant capacity is important because it may ameliorate natural and anthropogenic stressor-induced oxidative stress. While previous researchers have shown carotenoid compounds impart increased resistance to ultraviolet radiation in populations of zooplankton, little work has focused on the toxicological implications of PAH induced phototoxicity on zooplankton containing high levels of carotenoid compounds. This thesis discusses research studying the role that carotenoid compounds play in reducing PAH induced phototoxicity. By sampling different lakes at elevations ranging from 9,500' to 12,700' in the front range of the Colorado Rocky Mountains, copepod populations containing different levels of carotenoid compounds were obtained. These populations were then challenged with fluoranthene and ultraviolet radiation. Results discussed include differences in survival and levels of lipid peroxidation among populations exhibiting different levels of carotenoid compounds, and the toxicological and ecological implications of …
Date:
May 2010
Creator:
Kovach, Matthew James
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Advanced Spectroscopic Portal Program: Background and Issues for Congress
The attacks of September 11, 2001, prompted an increased federal focus on protecting the United States against terrorist nuclear or radiological attack. Since that time, the federal government has expanded existing programs, developed new programs, and deployed new equipment at U.S. borders and elsewhere. The global nuclear detection architecture has multiple facets, including source security to make acquiring threat material more difficult, intelligence activities, law enforcement activities, and deployment of radiation detection equipment. New technologies have been proposed to replace or augment existing radiation detection equipment and enhance its effectiveness. Primary among these new systems is an improved type of radiation detection device known as the Advanced Spectroscopic Portal (ASP). This report provides an overview of the ASP program's history and outlines issues for Congress as the program moves forward.
Date:
May 21, 2010
Creator:
Shea, Dana A.; Moteff, John D. & Morgan, Daniel
Object Type:
Report
System:
The UNT Digital Library
ADVANCED X-BAND TEST ACCELERATOR FOR HIGH BRIGHTNESS ELECTRON AND GAMMA RAY BEAMS
In support of Compton scattering gamma-ray source efforts at LLNL, a multi-bunch test stand is being developed to investigate accelerator optimization for future upgrades. This test stand will enable work to explore the science and technology paths required to boost the current 10 Hz monoenergetic gamma-ray (MEGa-Ray) technology to an effective repetition rate exceeding 1 kHz, potentially increasing the average gamma-ray brightness by two orders of magnitude. Multiple bunches must be of exceedingly high quality to produce narrow-bandwidth gamma-rays. Modeling efforts will be presented, along with plans for a multi-bunch test stand at LLNL. The test stand will consist of a 5.5 cell X-band rf photoinjector, single accelerator section, and beam diagnostics. The photoinjector will be a high gradient standing wave structure, featuring a dual feed racetrack coupler. The accelerator will increase the electron energy so that the emittance can be measured using quadrupole scanning techniques. Multi-bunch diagnostics will be developed so that the beam quality can be measured and compared with theory. Design will be presented with modeling simulations, and layout plans.
Date:
May 12, 2010
Creator:
Marsh, R A; Anderson, S G; Barty, C P; Chu, T S; Ebbers, C A; Gibson, D J et al.
Object Type:
Article
System:
The UNT Digital Library
Advances in coupled safety modeling using systems analysis and high-fidelity methods.
The potential for a sodium-cooled fast reactor to survive severe accident initiators with no damage has been demonstrated through whole-plant testing in EBR-II and FFTF. Analysis of the observed natural protective mechanisms suggests that they would be characteristic of a broad range of sodium-cooled fast reactors utilizing metal fuel. However, in order to demonstrate the degree to which new, advanced sodium-cooled fast reactor designs will possess these desired safety features, accurate, high-fidelity, whole-plant dynamics safety simulations will be required. One of the objectives of the advanced safety-modeling component of the Reactor IPSC is to develop a science-based advanced safety simulation capability by utilizing existing safety simulation tools coupled with emerging high-fidelity modeling capabilities in a multi-resolution approach. As part of this integration, an existing whole-plant systems analysis code has been coupled with a high-fidelity computational fluid dynamics code to assess the impact of high-fidelity simulations on safety-related performance. With the coupled capabilities, it is possible to identify critical safety-related phenomenon in advanced reactor designs that cannot be resolved with existing tools. In this report, the impact of coupling is demonstrated by evaluating the conditions of outlet plenum thermal stratification during a protected loss of flow transient. Outlet plenum stratification was …
Date:
May 31, 2010
Creator:
Fanning, T. H.; Thomas, J. W. & Division, Nuclear Engineering
Object Type:
Report
System:
The UNT Digital Library
Advancing Open Access Through Digital Services
Presentation for the 2010 Open Access Symposium discussing digital services using Georgia Tech University as a case study.
Date:
May 18, 2010
Creator:
Walters, Tyler
Object Type:
Presentation
System:
The UNT Digital Library