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1,932 Matching Results
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[An 1880s white dress with a cuirass bodice]
Photograph of a mannequin showing an 1880s white dress with a cuirass bodice and holding a fan, with fashion plates mounted to a grey wall in the background.
Date:
August 1, 2023
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[An 1890s white dress with light pink silk flowers]
Photograph of an 1890s white dress with light pink silk flowers and tiered lace sleeves, on a mannequin in front of a text panel and a mounted fashion plate, in a dark grey gallery space.
Date:
August 1, 2023
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[An 1895 evening gown]
Photograph of an 1895 evening gown, two-piece of cream brocaded silk with bustled train, shown on a mannequin with a variety of historic garments on mannequins in the background.
Date:
August 1, 2023
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[A 1897 Edwardian lace gown]
Photograph of the bust of a 1897 Edwardian lace gown mounted on a white mannequin, with a dark blue evening dress on a mannequin in the background of a dark grey gallery space.
Date:
August 1, 2023
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
20th International Training Course (ITC-20) on the physical protection of nuclear facilities and materials evaluation report.
The goal of this evaluation report is to provide the information necessary to improve the effectiveness of the ITC provided to the International Atomic Energy Agency Member States. This report examines ITC-20 training content, delivery methods, scheduling, and logistics. Ultimately, this report evaluates whether the course provides the knowledge and skills necessary to meet the participants needs in the protection of nuclear materials and facilities.
Date:
September 1, 2008
Creator:
Ramirez, Amanda Ann
Object Type:
Report
System:
The UNT Digital Library
A 2D Benchmark for the Verification of the PEBBED Code
A new benchmarking concept is presented for verifying the PEBBED 3D multigroup finite difference/nodal diffusion code with application to pebble bed modular reactors (PBMRs). The key idea is to perform convergence acceleration, also called extrapolation to zero discretization, of a basic finite difference numerical algorithm to give extremely high accuracy. The method is first demonstrated on a 1D cylindrical shell and then on an r,8 wedge where the order of the second order finite difference scheme is confirmed to four places.
Date:
September 1, 2008
Creator:
Ganapol, Barry D.; Gougar, Hans A. & Ougouag, A. O.
Object Type:
Article
System:
The UNT Digital Library
3rd African Drought Adaptation Forum report, Addis Ababa, Ethiopia, 17-19 September 2008
The Third African Drought Adaptation Forum was held in September 2008 in Addis Ababa, Ethiopia. The Forum was organized so that participants could exchange practical experiences, findings and ideas on how to adapt to the increasing threat of drought and climate change in the drylands of Africa. The report contains a summary of sessions and outlines key themes that emerged from the discussions.
Date:
September 2008
Creator:
UNDP Drylands Development Centre; United Nations Office for Disaster Risk Reduction & Economic Commission for Africa
Object Type:
Text
System:
The UNT Digital Library
Abilene Philharmonic Playbill: September-October, 2008
Program for an Abilene Philharmonic concert that ran from September 13th to October 4th, 2009 during the 59th season. It includes information about the pieces performed, artists and musicians, and advertising from local companies.
Date:
September 2008
Creator:
Abilene Philharmonic
Object Type:
Pamphlet
System:
The Portal to Texas History
ACRF Instrumentation Status: New, Current, and Future - August 2008
The purpose of this report is to provide a concise but comprehensive overview of Atmospheric Radiation Measurement Climate Research Facility instrumentation status. The report is divided into the following five sections: (1) new instrumentation in the process of being acquired and deployed, (2) field campaigns, (3) existing instrumentation and progress on improvements or upgrades, (4) proposed future instrumentation, and (5) Small Business Innovation Research instrument development.
Date:
September 1, 2008
Creator:
Voyles, J. W.
Object Type:
Report
System:
The UNT Digital Library
Activities and Accomplishments in Model Year 2007
Document summarizes the compliance activity of EPAct-covered state and alternative fuel provider fleets.
Date:
September 1, 2008
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Addendum to the Streamlined Approach for Environmental Restoration Plan for Corrective Action Unit 134: Aboveground Storage Tanks, Nevada Test Site, Nevada
The following is an addendum to the Streamlined Approach for Environmental Restoration Plan for Corrective Action Unit 134: Aboveground Storage Tanks, Nevada Test Site, Nevada, DOE/NV--1275, dated May 2008. This addendum expands upon information provided in the May 2008 plan. It provides specific details regarding samples to be collected at Corrective Action Sites 15-01-05 and 29-01-01. It also provides discussion and rationale for establishing the spatial boundaries of Corrective Action Sites.
Date:
September 1, 2008
Creator:
National Security Technologies, LLC
Object Type:
Report
System:
The UNT Digital Library
Advanced Detector Research - Fabrication and Testing of 3D Active-Edge Silicon Sensors: High Speed, High Yield
Development of 3D silicon radiation sensors employing electrodes fabricated perpendicular to the sensor surfaces to improve fabrication yields and increasing pulse speeds.
Date:
September 1, 2008
Creator:
Parker, Sherwood I
Object Type:
Report
System:
The UNT Digital Library
Advanced Test Reactor In-Canal Ultrasonic Scanner: Experiment Design and Initial Results on Irradiated Plates
An irradiation test device has been developed to support testing of prototypic scale plate type fuels in the Advanced Test Reactor. The experiment hardware and operating conditions were optimized to provide the irradiation conditions necessary to conduct performance and qualification tests on research reactor type fuels for the RERTR program. The device was designed to allow disassembly and reassembly in the ATR spent fuel canal so that interim inspections could be performed on the fuel plates. An ultrasonic scanner was developed to perform dimensional and transmission inspections during these interim investigations. Example results from the AFIP-2 experiment are presented.
Date:
September 1, 2008
Creator:
Wachs, D. M.; Wight, J. M.; Clark, D. T.; Williams, J. M.; Taylor, S. C.; Utterbeck, D. J. et al.
Object Type:
Article
System:
The UNT Digital Library
The Advanced Test Reactor Irradiation Capabilities Available as a National Scientific User Facility
The Advanced Test Reactor (ATR) is one of the world’s premiere test reactors for performing long term, high flux, and/or large volume irradiation test programs. The ATR is a very versatile facility with a wide variety of experimental test capabilities for providing the environment needed in an irradiation experiment. These capabilities include simple capsule experiments, instrumented and/or temperature-controlled experiments, and pressurized water loop experiment facilities. Monitoring systems have also been utilized to monitor different parameters such as fission gases for fuel experiments, to measure specimen performance during irradiation. ATR’s control system provides a stable axial flux profile throughout each reactor operating cycle, and allows the thermal and fast neutron fluxes to be controlled separately in different sections of the core. The ATR irradiation positions vary in diameter from 16 mm to 127 mm over an active core height of 1.2 m. This paper discusses the different irradiation capabilities with examples of different experiments and the cost/benefit issues related to each capability. The recent designation of ATR as a national scientific user facility will make the ATR much more accessible at very low to no cost for research by universities and possibly commercial entities.
Date:
September 1, 2008
Creator:
Grover, S. Blaine
Object Type:
Article
System:
The UNT Digital Library
Advanced Thermal Control Enabling Cost Reduction for Automotive Power Electronics
Describes NREL's work on next-generation vehicle cooling technologies (jets, sprays, microchannels) and novel packaging topologies to reduce costs and increase performance and reliability.
Date:
September 1, 2008
Creator:
Abraham, T.; Kelly, K.; Bennion, K. & Vlahinos, A.
Object Type:
Presentation
System:
The UNT Digital Library
Agile machining and inspection thrust area team-on-machine probing / compatibility assessment of Parametric Technology Corporation (PTC) pro/CMM DMIS with Zeiss DMISEngine.
The charter goal of the Agile Machining and Inspection Thrust Area Team is to identify technical requirements, within the nuclear weapons complex (NWC), for Agile Machining and Inspection capabilities. During FY 2008, the team identified Parametric Technology Corporation (PTC) Pro/CMM as a software tool for use in off-line programming of probing routines--used for measurement--for machining and turning centers. The probing routine would be used for in-process verification of part geometry. The same Pro/CMM program used on the machine tool could also be employed for program validation / part verification using a coordinate measuring machine (CMM). Funding was provided to determine the compatibility of the Pro/CMM probing program with CMM software (Zeiss DMISEngine).
Date:
September 1, 2008
Creator:
Wade, James Rokwel; Tomlinson, Kurt & Bryce, Edwin Anthony
Object Type:
Report
System:
The UNT Digital Library
An Algebraic Approach to the Evolution of Emittances upon Crossing the Linear Coupling Difference Resonance
One of the hallmarks of linear coupling is the resonant exchange of oscillation amplitude between the horizontal and vertical planes when the difference between the unperturbed tunes is close to an integer. The standard derivation of this phenomenon (known as the difference resonance) can be found, for example, in the classic papers of Guignard [1, 2]. One starts with an uncoupled lattice and adds a linear perturbation that couples the two planes. The equations of motion are expressed in hamiltonian form. As the difference between the unperturbed tunes approaches an integer, one finds that the perturbing terms in the hamiltonian can be divided into terms that oscillate slowly and ones that oscillate rapidly. The rapidly oscillating terms are discarded or transformed to higher order with an appropriate canonical transformation. The resulting approximate hamiltonian gives equations of motion that clearly exhibit the exchange of oscillation amplitude between the two planes. If, instead of the hamiltonian, one is given the four-by-four matrix for one turn around a synchrotron, then one has the complete solution for the turn-by-turn (TBT) motion. However, the conditions for the phenomenon of amplitude exchange are not obvious from a casual inspection of the matrix. These conditions and those …
Date:
September 1, 2008
Creator:
Gardner,C.
Object Type:
Report
System:
The UNT Digital Library
An Algebraic Approach to the Evolution of Emittances upon Crossing the Linear Coupling Difference Resonance
N/A
Date:
September 1, 2008
Creator:
Gardner, C. J.
Object Type:
Report
System:
The UNT Digital Library
Analyses of the Effects of Global Change on Human Health and Welfare and Human Systems
This report focuses on the impacts of global climate change, especially impacts on three bread dimensions of the human condition: human health, human settlements, and human welfare.
Date:
September 2008
Creator:
Climate Change Science Program (U.S.)
Object Type:
Report
System:
The UNT Digital Library
Analyses of the Effects of Global Change on Human Health and Welfare and Human Systems
This document is part of the Synthesis and Assessment Products (SAP) described in the U.S. Climate Change Science Program (CCSP) Strategic Plan. This report is meant to synthesize and communicate the current state of understanding about the characteristics and implications of uncertainty related to climate change and variability to an audience of policymakers, decision makers, and members of the media and general public with an interest in developing a fundamental understanding of the issue.
Date:
September 2008
Creator:
U.S. Climate Change Science Program and the Subcommittee on Global Change Research
Object Type:
Book
System:
The UNT Digital Library
Analysis of HFIR Dosimetry Experiments Performed in Cycles 400 and 401
The High Flux Isotope Reactor (HFIR) has been in operation at Oak Ridge National Laboratory since 1966. To upgrade and enhance capabilities for neutron science research at the reactor, a larger HB-2 beam tube was installed in April of 2002. To assess, experimentally, the impact of this larger beam tube on radiation damage rates [i.e., displacement-per-atom (dpa) rates] used in vessel life extension studies, dosimetry experiments were performed from April to August 2004 during fuel cycles 400 and 401. This report documents the analysis of the dosimetry experiments and the determination of best-estimate dpa rates. These dpa rates are obtained by performing a least-squares adjustment of calculated neutron and gamma-ray fluxes and the measured responses of radiometric monitors and beryllium helium accumulation fluence monitors. The best-estimate dpa rates provided here will be used to update HFIR pressure vessel life extension studies, which determine the pressure/temperature limits for reactor operation and the HFIR pressure vessel's remaining life. All irradiation parameters given in this report correspond to a reactor power of 85 MW.
Date:
September 1, 2008
Creator:
Remec, Igor & Baldwin, Charles A.
Object Type:
Report
System:
The UNT Digital Library
An analysis of the pull strength behaviors of fine-pitch, flip chip solder interconnections using a Au-Pt-Pd thick film conductor on Low-Temperature, Co-fired Ceramic (LTCC) substrates.
The assembly of the BDYE detector requires the attachment of sixteen silicon (Si) processor dice (eight on the top side; eight on the bottom side) onto a low-temperature, co-fired ceramic (LTCC) substrate using 63Sn-37Pb (wt.%, Sn-Pb) in a double-reflow soldering process (nitrogen). There are 132 solder joints per die. The bond pads were gold-platinum-palladium (71Au-26Pt-3Pd, wt.%) thick film layers fired onto the LTCC in a post-process sequence. The pull strength and failure modes provided the quality metrics for the Sn-Pb solder joints. Pull strengths were measured in both the as-fabricated condition and after exposure to thermal cycling (-55/125 C; 15 min hold times; 20 cycles). Extremely low pull strengths--referred to as the low pull strength phenomenon--were observed intermittently throughout the product build, resulting in added program costs, schedule delays, and a long-term reliability concern for the detector. There was no statistically significant correlation between the low pull strength phenomenon and (1) the LTCC 'sub-floor' lot; (2) grit blasting the LTCC surfaces prior to the post-process steps; (3) the post-process parameters; (4) the conductor pad height (thickness); (5) the dice soldering assembly sequence; or (5) the dice pull test sequence. Formation of an intermetallic compound (IMC)/LTCC interface caused by thick film …
Date:
September 1, 2008
Creator:
Uribe, Fernando R.; Kilgo, Alice C.; Grazier, John Mark; Vianco, Paul Thomas; Zender, Gary L.; Hlava, Paul Frank et al.
Object Type:
Report
System:
The UNT Digital Library
t anti-t production cross section measurement using soft electron tagging in p anti-p collisions at s**(1/2) = 1.96-TeV
We measure the production cross section of t{bar t} events in p{bar p} collisions at {radical}s = 1.96 TeV. The data was collected by the CDF experiment in Run 2 of the Tevatron accelerator at the Fermi National Accelerator Laboratory between 2002 and 2007. 1.7 fb{sup -1} of data was recorded during this time period. We reconstruct t{bar t} events in the lepton+jets channel, whereby one W boson - resulting from the decay of the top quark pairs - decays leptonically and the other hadronically. The dominant background to this process is the production of W bosons in association with multiple jets. To distinguish t{bar t} from background, we identify soft electrons from the semileptonic decay of heavy flavor jets produced in t{bar t} events. We measure a cross section of {sigma}{sub p{bar p}} = 7.8 {+-} 2.4(stat) {+-} 1.6(syst) {+-} 0.5(lumi).
Date:
September 1, 2008
Creator:
Chou, John Paul & U., /Harvard
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Assessing Descriptive Substance in Free-Text Collection-Level Metadata
This paper discusses assessing descriptive substance in free-text collection-level metadata. This paper reports on a content analysis of collection records in an aggregation of cultural heritage collections.
Date:
September 2008
Creator:
Zavalina, Oksana; Palmer, Carole L.; Jackson, Amy S. & Han, Myung-Ja
Object Type:
Paper
System:
The UNT Digital Library