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767
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307
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80
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45
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44
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38
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26
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23
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23
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476
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449
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199
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156
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136
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127
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95
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93
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45
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Year
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Neutron-Enhanced Calorimetry for Hadrons (NECH): Final Report
We present the results of a project to apply scintillator technology recently developed at Louisiana Tech University to hadronic calorimetry. In particular, we developed a prototype calorimeter module incorporating scintillator embedded with metal oxide nanoparticles as the active layers. These metal oxide nanoparticles of gadolinium oxide, have high cross-sections for interactions with slow neutrons. As a part fo this research project, we have developed a novel method for producing plastic scintillators with metal oxide nanoparticles evenly distributed through the plastic without aggregation.We will test the performance of the calorimeter module in test beam and with a neutron source, in order to measure the response to the neutron component of hadronic showers. We will supplement our detector prototyping activities with detailed studies of the effect of neutron component on the resolution of hadronic energy measurements, particular in the next generation of particle flow calorimeters.
Date:
August 31, 2012
Creator:
Andrew Stroud, Lee Sawyer
Object Type:
Report
System:
The UNT Digital Library
Research and Development of a Low Cost Solar Collector
This is a Final Technical Report on the Research and Development completed towards the development of a Low Cost Solar Collector conducted under the DOE cost-sharing award EE-0003591. The objective of this project was to develop a new class of solar concentrators with geometries and manufacturability that could significantly reduce the fully installed cost of the solar collector field for concentrated solar thermal power plants. The goal of the project was to achieve an aggressive cost target of $170/m2, a reduction of up to 50% in the total installed cost of a solar collector field as measured against the current industry benchmark of a conventional parabolic trough. The project plan, and the detailed activities conducted under the scope of the DOE Award project addressed all major drivers that affect solar collector costs. In addition to costs, the study also focused on evaluating technical performance of new collector architectures and compared them to the performance of the industry benchmark parabolic trough. The most notable accomplishment of this DOE award was the delivery of a full-scale integrated design, manufacturing and field installation solution for a new class of solar collector architecture which has been classified as the Bi-Planar Fresnel Collector (BPFC) and …
Date:
August 1, 2012
Creator:
Ansari, Asif; Philip, Lee & Thouppuarachchi, Chirath
Object Type:
Report
System:
The UNT Digital Library
Inherently safer technology gaps analysis study.
None
Date:
August 1, 2012
Creator:
Anstey, Mitchell R.; Sun, Amy Cha-Tien; Paap, Scott M.; Foltz, Greg W.; Jaeger, Calvin Dell; Hoette, Trisha Marie et al.
Object Type:
Report
System:
The UNT Digital Library
Penn State DOE GATE Program
The Graduate Automotive Technology Education (GATE) Program at The Pennsylvania State University (Penn State) was established in October 1998 pursuant to an award from the U.S. Department of Energy (U.S. DOE). The focus area of the Penn State GATE Program is advanced energy storage systems for electric and hybrid vehicles.
Date:
August 31, 2012
Creator:
Anstrom, Joel
Object Type:
Report
System:
The UNT Digital Library
Wind to Hydrogen in California: Case Study
This analysis presents a case study in California for a large scale, standalone wind electrolysis site. This is a techno-economic analysis of the 40,000 kg/day renewable production of hydrogen and subsequent delivery by truck to a fueling station in the Los Angeles area. This quantity of hydrogen represents about 1% vehicle market penetration for a city such as Los Angeles (assuming 0.62 kg/day/vehicle and 0.69 vehicles/person) [8]. A wind site near the Mojave Desert was selected for proximity to the LA area where hydrogen refueling stations are already built.
Date:
August 1, 2012
Creator:
Antonia, O. & Saur, G.
Object Type:
Report
System:
The UNT Digital Library
Energy Saving Melting and Revert Reduction Technology: Innovative Semi-Solid Metal (SSM) Processing
Semi-solid metal (SSM) processing has emerged as an attractive method for near-net-shape manufacturing due to the distinct advantages it holds over conventional near-net-shape forming technologies. These advantages include lower cycle time, increased die life, reduced porosity, reduced solidification shrinkage, improved mechanical properties, etc. SSM processing techniques can not only produce the complex dimensional details (e.g. thin-walled sections) associated with conventional high-pressure die castings, but also can produce high integrity castings currently attainable only with squeeze and low-pressure permanent mold casting processes. There are two primary semi-solid processing routes, (a) thixocasting and (b) rheocasting. In the thixocasting route, one starts from a non-dendritic solid precursor material that is specially prepared by a primary aluminum manufacturer, using continuous casting methods. Upon reheating this material into the mushy (a.k.a. "two-phase") zone, a thixotropic slurry is formed, which becomes the feed for the casting operation. In the rheocasting route (a.k.a. "slurry-on-demand" or "SoD"), one starts from the liquid state, and the thixotropic slurry is formed directly from the melt via careful thermal management of the system; the slurry is subsequently fed into the die cavity. Of these two routes, rheocasting is favored in that there is no premium added to the billet cost, and …
Date:
August 15, 2012
Creator:
Apelian, Diran
Object Type:
Report
System:
The UNT Digital Library
Binder Rheology and Performance in Warm Mix Asphalt : Interim Report
This report presents the preliminary findings from a study conducted to investigate the influence of chemical warm mix asphalt (WMA) additives and reduced aging on the viscosity, stiffness, susceptibility to permanent deformation, fracture resistance, and thermal cracking resistance of asphalt binders.
Date:
August 2012
Creator:
Arega, Zelalem & Bhasin, Amit
Object Type:
Report
System:
The Portal to Texas History
Final Report: Binder Rheology and Performance in Warm Mix Asphalt
This report presents the findings from a study conducted to investigate the influence of chemical WMA additives and reduced short-term aging on the properties of asphalt binders, mortars, and mixtures.
Date:
August 2012
Creator:
Arega, Zelalem & Bhasin, Amit
Object Type:
Report
System:
The Portal to Texas History
Interim Report: Binder Rheology and Performance in Warm Mix Asphalt
Report describing binder rhealogy and performance in warm mix asphalt.
Date:
January 2012
Creator:
Arega, Zelalem & Bhasin, Amit
Object Type:
Report
System:
The Portal to Texas History
Crisis In Mali
This report discusses the West African country of Mali that faces multiple overlapping crises. The country’s political leadership has been uncertain and disputed since a military coup on March 22, 2012, overthrew a democratically elected government in the capital, Bamako.
Date:
August 16, 2012
Creator:
Arieff, Alexis & Johnson, Kelly
Object Type:
Report
System:
The UNT Digital Library
Seismic Loading for FAST: May 2011 - August 2011
As more wind farms are constructed in seismically active regions, earthquake loading increases in prominence for design and analysis of wind turbines. Early investigation of seismic load tended to simplify the rotor and nacelle as a lumped mass on top of the turbine tower. This simplification allowed the use of techniques developed for conventional civil structures, such as buildings, to be easily applied to wind turbines. However, interest is shifting to more detailed models that consider loads for turbine components other than the tower. These improved models offer three key capabilities in consideration of base shaking for turbines: 1) The inclusion of aerodynamics and turbine control; 2) The ability to consider component loads other than just tower loads; and 3) An improved representation of turbine response in higher modes by reducing modeling simplifications. Both experimental and numerical investigations have shown that, especially for large modern turbines, it is important to consider interaction between earthquake input, aerodynamics, and operational loads. These investigations further show that consideration of higher mode activity may be necessary in the analysis of the seismic response of turbines. Since the FAST code is already capable of considering these factors, modifications were developed that allow simulation of base …
Date:
August 1, 2012
Creator:
Asareh, M. A. & Prowell, I.
Object Type:
Report
System:
The UNT Digital Library
The Peer Created Motivational Climate in Youth Sport and Its Relationship to Psychological Outcomes and Intention to Continue in Sport Among Male Adolescents
Social agents in the youth sport domain (coaches, parents, and peers) play a crucial role in developing the motivational approaches of youth sport athletes. One theory which has been useful in explaining the important role of such social agents has been Achievement Goal Theory (Nicholls, 1989). Specifically, Achievement Goal Theory was used to delineate various peer behaviors as being task-involving (Ntoumanis & Vazou, 2005) and was used to predict subsequent relationships relationship between the task-involving motivational-climate created by teammates and athletes’ mastery goal orientations and self-esteem, sport competence, enjoyment, and intention to continue playing sport. Participants were 405 boys aged 12-15 years. Using structural equation modeling, an exploratory analysis and confirmatory analysis revealed that higher levels of task-involving behaviors from peers predicted mastery goal orientation. Participants with higher mastery goal orientation reported greater sport competence, self-esteem, and more enjoyment; enjoyment was the strongest predictor of intention to continue. These findings both emphasize the importance of peer relationships within sport on a variety of motivationally and psychologically salient outcomes and provide direction for the development of training programs targeted to create positive and healthy sport experiences.
Date:
August 2012
Creator:
Atkins, Matthew R.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Austin Community College District Requests for Legislative Appropriations: Fiscal Years 2014 and 2015
Report submitted by the Austin Community College District containing summaries of requests for appropriations and expenditures for the fiscal years 2014 and 2015 with supporting documentation.
Date:
August 20, 2012
Creator:
Austin Community College (Austin, Tex.)
Object Type:
Book
System:
The Portal to Texas History
Patron Driven Acquisitions: Or I Wish I Knew Then...
This paper accompanies a poster presentation on patron driven acquisitions. The ups and downs of initiating and assessing a patron acquisitions program at the University of North Texas (UNT) will be highlighted. Emphasis will be placed on changing the philosophy of collection development, how to start the program (through a jobber or direct), coordinating print and electronic acquisitions processes, and assessing the first year's purchases.
Date:
August 2012
Creator:
Avery, Elizabeth Fuseler & Harker, Karen
Object Type:
Paper
System:
The UNT Digital Library
Patron Driven Acquisitions: Or I Wish I Knew Then... [Poster]
This poster discusses patron driven acquisitions. The ups and downs of initiating and assessing a patron acquisitions program at the University of North Texas (UNT) will be highlighted. Emphasis will be placed on changing the philosophy of collection development, how to start the program (through a jobber or direct), coordinating print and electronic acquisitions processes, and assessing the first year's purchases.
Date:
August 2012
Creator:
Avery, Elizabeth Fuseler & Harker, Karen
Object Type:
Poster
System:
The UNT Digital Library
Book Reviews in an Electronic Age
Poster presented at the 2012 IAMSLIC Annual Conference. This poster discusses research on book reviews in marine and aquatic journals to gain insight into the characteristics of the reviews and their value to librarians and research.
Date:
August 2012
Creator:
Avery, Elizabeth Fuseler; Heil, Kathy & Wiest, Natalie H., 1948-
Object Type:
Poster
System:
The UNT Digital Library
Design and implementation of high magnification framing camera for NIF "ARIANE Light"
None
Date:
August 6, 2012
Creator:
Ayers, M J; Felker, B; Smalyuk, V; Izumi, N; Piston, K; Holder, J et al.
Object Type:
Article
System:
The UNT Digital Library
Automating the Process for Locating No-Passing Zones Using Georeferencing Data
This research created a method of using global positioning system (GPS) coordinates to identify the location of no-passing zones in two-lane highways.
Date:
August 2012
Creator:
Azimi, Mehdi & Hawkings, H. Gene
Object Type:
Report
System:
The Portal to Texas History
Transformer Efficiency Assessment - Okinawa, Japan
The US Army Engineering & Support Center, Huntsville (USAESCH), and the US Marine Corps Base (MCB), Okinawa, Japan retained Idaho National Laboratory (INL) to conduct a Transformer Efficiency Assessment of “key” transformers located at multiple military bases in Okinawa, Japan. The purpose of this assessment is to support the Marine Corps Base, Okinawa in evaluating medium voltage distribution transformers for potential efficiency upgrades. The original scope of work included the MCB providing actual transformer nameplate data, manufacturer’s factory test sheets, electrical system data (kWh), demand data (kWd), power factor data, and electricity cost data. Unfortunately, the MCB’s actual data is not available and therefore making it necessary to de-scope the original assessment. Note: Any similar nameplate data, photos of similar transformer nameplates, and basic electrical details from one-line drawings (provided by MCB) are not a replacement for actual load loss test data. It is recommended that load measurements are performed on the high and low sides of transformers to better quantify actual load losses, demand data, and power factor data. We also recommend that actual data, when available, be inserted by MCB Okinawa where assumptions have been made and then the LCC analysis updated. This report covers a generalized assessment …
Date:
August 1, 2012
Creator:
Baldwin, Thomas L.; Turk, Robert J.; Myers, Kurt S.; Gentle, Jake P. & Bush, Jason W.
Object Type:
Report
System:
The UNT Digital Library
LCLS-II New Instruments Workshops Report
The LCLS-II New Instruments workshops chaired by Phil Heimann and Jerry Hastings were held on March 19-22, 2012 at the SLAC National Accelerator Laboratory. The goal of the workshops was to identify the most exciting science and corresponding parameters which will help define the LCLS-II instrumentation. This report gives a synopsis of the proposed investigations and an account of the workshop. Scientists from around the world have provided short descriptions of the scientific opportunities they envision at LCLS-II. The workshops focused on four broadly defined science areas: biology, materials sciences, chemistry and atomic, molecular and optical physics (AMO). Below we summarize the identified science opportunities in the four areas. The frontiers of structural biology lie in solving the structures of large macromolecular biological systems. Most large protein assemblies are inherently difficult to crystallize due to their numerous degrees of freedom. Serial femtosecond protein nanocrystallography, using the 'diffraction-before-destruction' approach to outrun radiation damage has been very successfully pioneered at LCLS and diffraction patterns were obtained from some of the smallest protein crystals ever. The combination of femtosecond x-ray pulses of high intensity and nanosized protein crystals avoids the radiation damage encountered by conventional x-ray crystallography with focused beams and opens the …
Date:
August 8, 2012
Creator:
Baradaran, Samira; Bergmann, Uwe; Durr, Herrmann; Gaffney, Kelley; Goldstein, Julia; Guehr, Markus et al.
Object Type:
Article
System:
The UNT Digital Library
Web-based Testing for an Environmental Information Management System
None
Date:
August 31, 2012
Creator:
Barbosa, E & Laguna, G W
Object Type:
Article
System:
The UNT Digital Library
Overview of the Facility Safeguardability Analysis (FSA) Process
Executive Summary The safeguards system of the International Atomic Energy Agency (IAEA) is intended to provide the international community with credible assurance that a State is fulfilling its safeguards obligations. Effective and cost-efficient IAEA safeguards at the facility level are, and will remain, an important element of IAEA safeguards as those safeguards evolve towards a “State-Level approach.” The Safeguards by Design (SBD) concept can facilitate the implementation of these effective and cost-efficient facility-level safeguards (Bjornard, et al. 2009a, 2009b; IAEA, 1998; Wonder & Hockert, 2011). This report, sponsored by the National Nuclear Security Administration’s Office of Nuclear Safeguards and Security, introduces a methodology intended to ensure that the diverse approaches to Safeguards by Design can be effectively integrated and consistently used to cost effectively enhance the application of international safeguards.
Date:
August 1, 2012
Creator:
Bari, Robert A.; Hockert, John; Wonder, Edward F.; Johnson, Scott J.; Wigeland, Roald & Zentner, Michael D.
Object Type:
Report
System:
The UNT Digital Library
2012 MITOCHONDRIA AND CHLOROPLASTS GORDON RESEARCH CONFERENCE & GORDON RESEARCH SEMINAR, JULY 29 - AUGUST 3, 2012
The 2012 Gordon Research Conference on Mitochondria and Chloroplasts will assemble an international group of scientists investigating fundamental properties of these organelles, and their integration into broader physiological processes. The conference will emphasize the many commonalities between mitochondria and chloroplasts: their evolution from bacterial endosymbionts, their genomes and gene expression systems, their energy transducing membranes whose proteins derive from both nuclear and organellar genes, the challenge of maintaining organelle integrity in the presence of the reactive oxygen species that are generated during energy transduction, their incorporation into organismal signaling pathways, and more. The conference will bring together investigators working in animal, plant, fungal and protozoan systems who specialize in cell biology, genetics, biochemistry, physiology, proteomics, genomics, and structural biology. As such, this conference will provide a unique forum that engenders cross-disciplinary discussions concerning the biogenesis, dynamics, and regulation of these key cellular structures. By fostering interactions among mammalian, fungal and plant organellar biologists, this conference also provides a conduit for the transmission of mechanistic insights obtained in model organisms to applications in medicine and agriculture. The 2012 conference will highlight areas that are moving rapidly and emerging themes. These include new insights into the ultrastructure and organization of the energy …
Date:
August 3, 2012
Creator:
Barkan, Alice
Object Type:
Article
System:
The UNT Digital Library
Direct Observation of Hydrides Formation in Cavity-Grade Niobium
None
Date:
August 1, 2012
Creator:
Barkov, F. & Romanenko, A.
Object Type:
Article
System:
The UNT Digital Library