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open access

Emerging Energy-Efficient Technologies in Buildings Technology Characterizations for Energy Modeling

Description: The energy use in America's commercial and residential building sectors is large and growing. Over 38 quadrillion Btus (Quads) of primary energy were consumed in 2002, representing 39% of total U.S. energy consumption. While the energy use in buildings is expected to grow to 52 Quads by 2025, a large number of energy-related technologies exist that could curtail this increase. In recent years, improvements in such items as high efficiency refrigerators, compact fluorescent lights, high-SEER air… more
Date: October 11, 2004
Creator: Hadley, SW
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Methods for Calibrating Basin-Wide Hydroacoustic Propagation in the Indian Ocean

Description: This collaborative project was designed to test and compare methods for achieving full ocean basin propagation of hydroacoustic signals in the 5-100 Hz frequency band. Plans for a systematic calibration of the International Monitoring System (IMS) for nuclear testing were under consideration in 2000/2001. The results from this project provide information to guide such planning for future ocean basin calibration work. Several acoustic source types were tested during two sea-going experiments and… more
Date: October 11, 2004
Creator: Blackman, D; de Groot-Hedlin, C; Orcutt, J A; Harben, P H; Clarke, D B & Ramirez, A L
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

High pT hadron spectra at RHIC: an overview

Description: Recent results on high transverse momentum (p{sub T}) hadron production in p+p, d+Au and Au+Au collisions at the Relativistic Heavy Ion Collider (RHIC) are reviewed. Comparison of the nuclear modification factors, R{sub dAu}(p{sub T}) and R{sub AA}(p{sub T}), demonstrates that the large suppression in central Au+Au collisions is due to strong final-state effects. Theoretical models which incorporate jet quenching via gluon Bremsstrahlung in the dense partonic medium that is expected in central … more
Date: October 11, 2004
Creator: Klay, J L
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

PM Motor Parametric Design Analyses for a Hybrid Electric Vehicle Traction Drive Application

Description: The Department of Energy's (DOE) Office of FreedomCAR (Cooperative Automotive Research) and Vehicle Technologies office has a strong interest in making rapid progress in permanent magnet (PM) machine development. The DOE FreedomCAR program is directing various technology development projects that will advance the technology and hopefully lead to a near-term request for proposals (RFP) for a to-be-determined level of initial production. This aggressive approach is possible because the technology… more
Date: October 11, 2004
Creator: Staunton, R.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Using Energy Information Systems (EIS): A Guidebook for the U.S. Postal Service

Description: The U.S. Postal Service (Postal Service) recently installed Energy Information Systems (EIS) at 30 facilities in California. These systems integrate electric utility meter data acquisition hardware, software, and communication systems to collect, archive, analyze, and display whole-facility energy consumption data. At some point in the future, these systems could also be integrated with sub-meters that measure the electricity consumption of key end-use equipment. The purpose of this guidebook i… more
Date: October 11, 2004
Creator: Foster, Dale; Hough, Ben; Barbose, Galen; Golove, William & Goldman, Charles
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Lattice design for an ILC damping ring with 3 km circumference

Description: We describe a simple lattice that meets the specifications for the damping times and horizontal and longitudinal emittances for the International Linear Collider (ILC) damping rings. The circumference of a little over 3 km leads to a bunch spacing of around 3 ns, which will require advances in kicker technology for injection and extraction. We present the lattice design, and initial results of studies of the acceptance and collective effects. With the high bunch charge and close spacing, the io… more
Date: October 11, 2004
Creator: Wolski, Andrzej
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

FEPs Screening of Processes and Issues in Drip Shield and Waste Package Degradation

Description: The purpose of this report is to evaluate and document the inclusion or exclusion of features, events and processes (FEPs) with respect to drip shield and waste package modeling used to support the Total System Performance Assessment for License Application (TSPA-LA). Thirty-three FEPs associated with the waste package and drip shield performance have been identified (DTN: MO0407SEPFEPLA.000 [DIRS 170760]). A screening decision, either ''included'' or ''excluded,'' has been assigned to each FEP… more
Date: October 11, 2004
Creator: Mon, K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Protocols for Thermoluninescence and Optically Stimulated Luminescence Research at DOSAR

Description: The Life Sciences Division (LSD) of Oak Ridge National Laboratory (ORNL) has a long record of radiation dosimetry research at the Dosimetry Applications Research (DOSAR) facility complex. These facilities have been used by a broad segment of the research community to perform a variety of experiments in areas including, but not limited to, radiobiology, radiation dosimeter and instrumentation development and calibration, and materials testing in a variety of radiation environments. Collaboration… more
Date: October 11, 2004
Creator: Bernal, S. M. & Bogard, J. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Simulations of Turbulence Induced Ellipticity Over Large Fields-of-View: The First Step Towards Enabling LSST Weak Lensing Science

Description: Atmospheric turbulence can mimic the effects of weak lensing in astronomical images, so it is necessary to understand to what degree turbulence affects weak lensing measurements. In particular, we studied the ellipticity induced upon the point-spread functions (PSFs) of a grid of simulated stars separated by distances (d {approx} 1{prime}) that will be characteristic of Large Synoptic Survey Telescope (LSST) images. We observe that atmospherically induced ellipticity changes on small scales (d … more
Date: October 11, 2004
Creator: Schlaufman, K
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Discussion: Reporting and calibration of post-bomb 14C data

Description: The definitive paper by Stuiver and Polach (1977) established the conventions for reporting of {sup 14}C data for chronological and geophysical studies based on the radioactive decay of {sup 14}C in the sample since the year of sample death or formation. Several ways of reporting {sup 14}C activity levels relative to a standard were also established, but no specific instructions were given for reporting nuclear weapons testing (post-bomb) {sup 14}C levels in samples. Because the use of post-bom… more
Date: October 11, 2004
Creator: Reimer, P J; Brown, T A & Reimer, R W
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Simulating Time-Dependent Energy Transfer Between Crossed Laser Beams in an Expanding Plasma

Description: A coupled mode system is derived to investigate a three-wave parametric instability leading to energy transfer between co-propagating laser beams crossing in a plasma flow. The model includes beams of finite width refracting in a prescribed transverse plasma flow with spatial and temporal gradients in velocity and density. The resulting paraxial light equations are discretized spatially with a Crank-Nicholson-type scheme, and these algebraic constraints are nonlinearly coupled with ordinary dif… more
Date: October 11, 2004
Creator: Hittinger, J. F.; Dorr, M. R.; Berger, R. L. & Williams, E. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Hard X-ray Optics for Astronomy and the Laboratory

Description: The hard X-ray regime (10-100 keV) remains one of the last unexplored areas of astronomy. During the next decade, several major observatories will open this new frontier, providing insight into black hole formation, nucleosynthesis and the physics that governs the most energetic quasars. The telescopes rely on grazing incidence optics coated with multilayers, and will require at wavelength calibration of the angular resolution of the mirrors and the reflectivity of their coatings-a task best pe… more
Date: October 11, 2004
Creator: Pivovaroff, M
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Simultaneous near-field and far-field imaging of the 11.9-nm Ni-like Sn soft x-ray laser

Description: We report on two-dimensional near-field imaging experiments of the 11.9-nm Sn x-ray laser that were performed with a set of Mo/Y multilayer mirrors having reflectivities of up to {approx}45% at normal and at 45{sup o} incidence. Second-moment analysis of the x-ray laser emission was used to determine values of the x-ray beam propagation factor M{sup 2} for a range of irradiation parameters. The results reveal a reduction of M{sup 2} with increasing prepulse amplitude. The spatial size of the ou… more
Date: October 11, 2004
Creator: Staub, F; Braud, M; Balmer, J E; Nilsen, J & Bajt, S
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

New Technology and Lunar Power Option for Power Beaming Propulsion

Description: Orbit raising missions (LEO to GEO or beyond) are the only missions with enough current traffic to be seriously considered for near-term power beaming propulsion. Even these missions cannot justify the development expenditures required to deploy the required new laser, optical and propulsion technologies or the programmatic risks. To be deployed, the laser and optics technologies must be spin-offs of other funded programs. The manned lunar base nighttime power requirements may justify a major p… more
Date: October 11, 2004
Creator: Kare, J; Early, J; Krupke, W & Beach, R
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Simulating thermal explosion of RDX-based explosives: Model comparison with experiment

Description: We compare two-dimensional model results with measurements for the thermal, chemical and mechanical behavior in a thermal explosion experiment. Confined high explosives are heated at a rate of 1 C per hour until an explosion is observed. The heating, ignition, and deflagration phases are modeled using an Arbitrarily Lagrangian-Eulerian code (ALE3D) that can handle a wide range of time scales that vary from a structural to a dynamic hydro time scale. During the pre-ignition phase, quasi-static m… more
Date: October 11, 2004
Creator: Yoh, J J; McClelland, M A; Maienschein, J L; Wardell, J F & Tarver, C M
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

48Ti(n,xnypz ag) reactions for neutron energies up to 250 MeV

Description: Cross section measurements were made of prompt {gamma}-ray production as a function of incident neutron energy on a {sup 48}Ti sample. Partial {gamma}-ray cross sections for transitions in {sup 45--48}Ti, {sup 44--48}Sc, {sup 42--45}Ca, {sup 41--44}K, and {sup 41--42}Ar have been determined. Energetic neutrons were delivered by the Los Alamos National Laboratory spallation neutron source located at the LANSCE/WNR facility. The prompt-reaction {gamma} rays were detected with the large-scale Comp… more
Date: October 11, 2004
Creator: Dashdorj, D.; Garrett, P. E.; Becker, J. A.; Bernstein, L. A.; Cooper, J. R.; Devlin, M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Frequency map analysis of nonlinear dynamics in the NLC main damping rings

Description: To avoid radiation damage, the acceptance of linear collider damping rings must be large enough that injection efficiency close to 100 percent can be achieved. Survival plots based on tracking particles in the NLC Main Damping Ring lattice suggest a dynamic aperture with some margin over the specified injected beam size and energy spread. Here, we apply Frequency Map Analysis to give a more detailed picture of the dynamical stability of particle trajectories in the presence of lattice nonlinear… more
Date: October 11, 2004
Creator: Wolski, Andrzej; Venturini, Marco; Wan, Weishi & Marks, Steve
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

[Woman in dress speaking]

Description: A photograph of a woman speaking at a Department of Equity and Diversity event. She is wearing a black dress and silver and crystal jewelry.
Date: October 11, 2004
Creator: University of North Texas. Multicultural Center.
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections
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