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Private Collection of Jim Bell
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Jim Bell Texas Architecture Photograph Collection
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54
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41
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29
The Greensheet
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Actual Farm Bill Spending and Cost Estimates
This report discusses the budget for the 2008 Farm Bill, and its reauthorization. Moreover, the report discusses the increasing level of demand for fiscal constraint and the current large budget deficits.
Date:
December 13, 2010
Creator:
Monke, Jim & Johnson, Renée
Object Type:
Report
System:
The UNT Digital Library
Aerodynamic Design Criteria for Class 8 Heavy Vehicles Trailer Base Devices to Attain Optimum Performance
Lawrence Livermore National Laboratory (LLNL) as part of its Department of Energy (DOE), Energy Efficiency and Renewable Energy (EERE), and Vehicle Technologies Program (VTP) effort has investigated class 8 tractor-trailer aerodynamics for many years. This effort has identified many drag producing flow structures around the heavy vehicles and also has designed and tested many new active and passive drag reduction techniques and concepts for significant on the road fuel economy improvements. As part of this effort a database of experimental, computational, and conceptual design for aerodynamic drag reduction devices has been established. The objective of this report is to provide design guidance for trailer base devices to improve their aerodynamic performance. These devices are commonly referred to as boattails, base flaps, tail devices, and etc. The information provided here is based on past research and our most recent full-scale experimental investigations in collaboration with Navistar Inc. Additional supporting data from LLNL/Navistar wind tunnel, track test, and on the road test will be published soon. The trailer base devices can be identified by 4 flat panels that are attached to the rear edges of the trailer base to form a closed cavity. These devices have been engineered in many different forms …
Date:
December 13, 2010
Creator:
Salari, K & Ortega, J
Object Type:
Report
System:
The UNT Digital Library
Automatic Model Order Reduction
None
Date:
December 13, 2010
Creator:
White, D. A.
Object Type:
Article
System:
The UNT Digital Library
A Design Report for the Optical Transition Radiation Imager for the LCLS Undulator
The Linac Coherent Light Source (LCLS), a free-electron x-ray laser, is under design and construction. Its high-intensity electron beam, 3400 A in peak current and 46 TW in peak power, is concentrated in a small area (37 micrometer in rms radius) inside its undulator. Ten optical transition radiation (OTR) imagers are planned between the undulator segments for characterizing the transverse profiles of the electron beam. In this note, we report on the optical and mechanical design of the OTR imager. Through a unique optical arrangement, using a near-normal-incidence screen and a multi-layer coated mirror, this imager will achieve a fine resolution (12 micrometer or better) over the entire field of view (8 mm x 5 mm), with a high efficiency for single-shot imaging. A digital camera will be used to read out the beam images in a programmable region (5 mm x 0.5 mm) at the full beam repetition rate (120 Hz), or over the entire field at a lower rate (10 Hz). Its built-in programmable amplifier will be used as an electronic intensity control.
Date:
December 13, 2010
Creator:
Yang, Bingxin
Object Type:
Report
System:
The UNT Digital Library
Direct Comparison of Brookhaven Reflectivity Measurements with Free-Electron Theory
The reflectivity at normal incidence of copper and aluminum samples was recently measured over a large frequency range at Brookhaven by one of us (JT). Then using the Kramers-Kroning integrals, and assuming the free-electron model of conductivity, the dependence of conductivity on frequency was obtained. The results seemed to suggest, for example, that the dc conductivities of the copper and evaporated aluminum samples are a factor of 3 lower than expected. We propose in this report, instead, directly fitting the free-electron model to the low frequency end of the reflectivity data. This fitting does not depend on the higher frequency results and on Kramers-Kronig integrations, but it does assume that the data at the low frequency end is sufficiently accurate. Note that for our LCLS wakefield studies, it is only over these (relatively) low frequencies that we need to know the electrical properties of the metals. The equations that relate reflectivity R with the free electron parameters dc conductivity {sigma} and relaxation time {tau} are: (1) {tilde {sigma}} = {sigma}/1-ikc{tau}; (2) {tilde n} = {radical} {tilde {epsilon}} = {radical}(1+4{pi}i{tilde k}c/{omega}); and (3) R = |{tilde n}-1/{tilde n} + 1|{sup 2}. The parameters are ac conductivity {tilde {sigma}}, index of refraction …
Date:
December 13, 2010
Creator:
Bane, Karl L.F.
Object Type:
Report
System:
The UNT Digital Library
Earth's Magnetic Field Measurements for the LCLS Undulators
Measurements of the earth's magnetic field at several locations at SLAC were conducted to determine the possible field error contribution from tuning the undulators in a location with a different magnetic field than that which will be found in the undulator hall. An average difference of 0.08 {+-} 0.04 Gauss has been measured between the downward earth's field components in the test facility and SLAC tunnel locations.
Date:
December 13, 2010
Creator:
Hacker, Kirsten
Object Type:
Report
System:
The UNT Digital Library
Effect of Asymmetric Versus Symmetric Warming on Grassland Mesocosms: Final Report
Final Report for âEffect of Asymmetric Versus Symmetric Warming on Grassland Mesocosmsâ
Date:
December 13, 2010
Creator:
Olszyk, David M.
Object Type:
Report
System:
The UNT Digital Library
Emergency Communications: Broadband and the Future of 911
This report discusses the Summary of 911 Legislation and Policy, Funding and Grants and National Broadband Plan.
Date:
December 13, 2010
Creator:
Moore, Linda K.
Object Type:
Report
System:
The UNT Digital Library
Environmental Reactivity of Solid-State Hydrogen Systems: Fundamental Testing and Evaluation
In order to enable the commercial acceptance of solid state hydrogen storage materials and systems it is important to understand the risks associated with the environmental exposure of various materials. In some instances, these materials are sensitive to the environment surrounding the material and the behavior is unique and independent to each material. The development of testing procedures to evaluate a material's behavior with different environmental exposures is a critical need. In some cases material modifications may be needed in order to reduce the risk of environmental exposure. We have redesigned two standardized UN tests for clarity and exactness; the burn rate and self-heating tests. The results of these and other UN tests are shown for ammonia borane, NH{sub 3}BH{sub 3}, and alane, AlH{sub 3}. The burn rate test showed a strong dependence on the preparation method of aluminum hydride as the particle size and trace amounts of solvent greatly influence the test results. The self-heating test for ammonia borane showed a failed test as low as 70 C in a modified cylindrical form. Finally, gas phase calorimetry was performed and resulted in an exothermic behavior within an air and 30%RH environment.
Date:
December 13, 2010
Creator:
James, C.; Cortes-Concepcion, J.; Anton, D. & Tamburello, D.
Object Type:
Article
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Monday, December 13, 2010
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 13, 2010
Creator:
Wray, Kelly
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Federal Crop Insurance: Background and Issues
This report provides a primer on the federal crop insurance program and discusses related issues.
Date:
December 13, 2010
Creator:
Shields, Dennis A.
Object Type:
Report
System:
The UNT Digital Library
Federal Register, Volume 75, Number 238, December 13, 2010, Pages 77251-77748
Daily publication of the U.S. Office of the Federal Register contains rules and regulations, proposed legislation and rule changes, and other notices, including "Presidential proclamations and Executive Orders, Federal agency documents having general applicability and legal effect, documents required to be published by act of Congress, and other Federal agency documents of public interest" (p. ii). Table of Contents starts on page iii.
Date:
December 13, 2010
Creator:
United States. Office of the Federal Register.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
First Measurements and Results With a Stretched Wire Test Setup
The LINAC Coherent Light Source [LCLS] is a free electron laser, designed to produce high brilliant X-ray beams using Self Amplified Spontaneous Emission [SASE]. Due to the physics of SASE, the electron beam has to be held very precisely on the same trajectory as the X-ray light beam generated by the undulator magnets. To optimize the SASE output, trajectory deviations between both beams have to be minimized to a few micrometers along the entire undulator section and held stable over the time period between beam-based-alignment processes. Consequently, extremely high position stability of all magnets in the undulator section is required to operate the LCLS successfully. The knowledge of any magnet movement exceeding few micrometers during periods of several weeks is essential for efficient X-ray generation. A well known principle of monitoring transverse component positions along beam lines is the application of stretched wires, associated with suitable wire position sensors and electronics. The particular challenge at LCLS is the required wire system performance in conjunction with the length of the undulator section and the large number of monitors. Verification of system stability and resolution under real conditions is the primary goal of this test setup. A stretched wire test setup has …
Date:
December 13, 2010
Creator:
Peters, Franz
Object Type:
Report
System:
The UNT Digital Library
The Freedom of Information Act and Nondisclosure Provisions in Other Federal Laws
This report discusses Congressional considerations regarding how to balance the federal government's growing need for sensitive or confidential business information, the public's right of access to information about government activities, and the private sector's interest in keeping its sensitive or proprietary information protected from public disclosure. The report discusses this issue in light of particularly the Freedom of Information Act (FOIA) and other similar legislation.
Date:
December 13, 2010
Creator:
Stevens, Gina
Object Type:
Report
System:
The UNT Digital Library
The Genetic Information Nondiscrimination Act of 2008 and the Patient Protection and Affordable Care Act of 2010: Overview and Legal Analysis of Potential Interactions
None
Date:
December 13, 2010
Creator:
Sarata, Amanda K.; Jones, Nancy Lee & Staman, Jennifer A.
Object Type:
Report
System:
The UNT Digital Library
Innovations in Nuclear Infrastructure and Education
The decision to implement the Innovation in Nuclear Infrastructure and Engineering Program (INIE) was an important first step towards ensuring that the United States preserves its worldwide leadership role in the field of nuclear science and engineering. Prior to INIE, university nuclear science and engineering programs were waning, undergraduate student enrollment was down, university research reactors were being shut down, while others faced the real possibility of closure. For too long, cutting edge research in the areas of nuclear medicine, neutron scattering, radiochemistry, and advanced materials was undervalued and therefore underfunded. The INIE program corrected this lapse in focus and direction and started the process of drawing a new blueprint with positive goals and objectives that supports existing as well the next generation of educators, students and researchers.
Date:
December 13, 2010
Creator:
Bernard, John
Object Type:
Report
System:
The UNT Digital Library
Iran Sanctions
This report focuses on the United States' relationship with Iran and how the Obama Administration is handling prior administration's economic sanctions against Iran. The Obama Administration's policy approach toward Iran has contrasted with the Bush Administration's by attempting to couple the imposition of sanctions to an active and direct U.S. effort to negotiate with Iran on the nuclear issue. That approach was not initially altered because of the Iranian dispute over its June 12, 2009, elections. However, with subsequent negotiations yielding no firm Iranian agreement to compromise, since early 2010 the Administration has focused on achieving the imposition of additional U.N., U.S., and allied country sanctions whose cumulative effect would be to compel it to accept a nuclear bargain.
Date:
December 13, 2010
Creator:
Katzman, Kenneth
Object Type:
Report
System:
The UNT Digital Library
Keeping America's Pipelines Safe and Secure: Key Issues for Congress
This report discusses new legislation being considered by the 111th Congress to improve the safety and security of the U.S. pipeline network. H.R. 6008 would require pipeline operators to provide immediate telephonic notice of a pipeline release to federal emergency response officials and would increase civil penalties for pipeline safety violations. S. 3824 would increase the number of federal pipeline safety inspectors, would require automatic shutoff valves for natural gas pipelines, and would mandate internal inspections of transmission pipelines, among other provisions
Date:
December 13, 2010
Creator:
Parfomak, Paul W.
Object Type:
Report
System:
The UNT Digital Library
Location of Maximum Credible Beam Losses in LCLS Injector
The memo describes the maximum credible beam the LCLS injector can produce and lose at various locations along the beamline. The estimation procedure is based upon three previous reports [1, 2, 3]. While specific numbers have been updated to accurately reflect the present design parameters, the conclusions are very similar to those given in Ref 1. The source of the maximum credible beam results from the explosive electron emission from the photocathode if the drive laser intensity exceeds the threshold for plasma production. In this event, the gun's RF field can extract a large number of electrons from this plasma which are accelerated out of the gun and into the beamline. This electron emission persists until it has depleted the gun of all its energy. Hence the number of electrons emitted per pulse is limited by the amount of stored RF energy in the gun. It needs to be emphasized that this type of emission is highly undesirable, as it causes permanent damage to the cathode.
Date:
December 13, 2010
Creator:
Mao, Stan
Object Type:
Report
System:
The UNT Digital Library
[Man in library]
Photograph of a man in a library, held by UNT Special Collections. The image shows an African American man in a white shirt sitting at a green chair in front of a wall containing rows of books. The man has a book open in his lap.
Date:
December 13, 2010
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Man with laptop]
Photograph of a man with a laptop, held by UNT Special Collections. The image shows an African American man in a white shirt, sitting at a big table with his laptop in front of him. The wall behind him is green.
Date:
December 13, 2010
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
MIDAS (Material Implementation, Database, and Analysis Source): A comprehensive resource of material properties
MIDAS is aimed to be an easy-to-use and comprehensive common source for material properties including both experimental data and models and their parameters. At LLNL, we will develop MIDAS to be the central repository for material strength related data and models with the long-term goal to encompass other material properties. MIDAS will allow the users to upload experimental data and updated models, to view and read materials data and references, to manipulate models and their parameters, and to serve as the central location for the application codes to access the continuously growing model source codes. MIDAS contains a suite of interoperable tools and utilizes components already existing at LLNL: MSD (material strength database), MatProp (database of materials properties files), and MSlib (library of material model source codes). MIDAS requires significant development of the computer science framework for the interfaces between different components. We present the current status of MIDAS and its future development in this paper.
Date:
December 13, 2010
Creator:
Tang, M.; Norquist, P.; Barton, N.; Durrenberger, K.; Florando, J. & Attia, A.
Object Type:
Article
System:
The UNT Digital Library
The National Ignition Facility and the Promise of Inertial Fusion Energy
The National Ignition Facility (NIF) at the Lawrence Livermore National Laboratory (LLNL) in Livermore, CA, is now operational. The NIF is the world's most energetic laser system capable of producing 1.8 MJ and 500 TW of ultraviolet light. By concentrating the energy from its 192 extremely energetic laser beams into a mm{sup 3}-sized target, NIF can produce temperatures above 100 million K, densities of 1,000 g/cm{sup 3}, and pressures 100 billion times atmospheric pressure - conditions that have never been created in a laboratory and emulate those in planetary interiors and stellar environments. On September 29, 2010, the first integrated ignition experiment was conducted, demonstrating the successful coordination of the laser, cryogenic target system, array of diagnostics and infrastructure required for ignition demonstration. In light of this strong progress, the U.S. and international communities are examining the implication of NIF ignition for inertial fusion energy (IFE). A laser-based IFE power plant will require a repetition rate of 10-20 Hz and a laser with 10% electrical-optical efficiency, as well as further development and advances in large-scale target fabrication, target injection, and other supporting technologies. These capabilities could lead to a prototype IFE demonstration plant in the 10- to 15-year time frame. …
Date:
December 13, 2010
Creator:
Moses, E I
Object Type:
Article
System:
The UNT Digital Library
P.L. 94-171 County Block Map (2010 Census): Anderson County, Block 1
Parent map for Anderson County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:18,000.
Date:
December 13, 2010
Creator:
United States. Bureau of the Census.
Object Type:
Map
System:
The Portal to Texas History