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Transient electronic structure of the photoinduced phase of Pr0.7Ca0.3MnO3 probed with soft x-ray pulses
We use time-resolved x-ray absorption near-edge structure spectroscopy to investigate the electronic dynamics associated with the photoinduced insulator-to-metal phase transition in the colossal magnetoresistive manganite Pr{sub 0.7}Ca{sub 0.3}MnO{sub 3}. Absorption changes at the O K and Mn L edges directly monitor the evolution of the density of unoccupied states in the transient photoinduced phase. We show that the electronic structure of the photoinduced phase is remarkably similar to that of the ferromagnetic metallic phase reached in related manganites upon cooling below the Curie temperature.
Date:
April 1, 2009
Creator:
Rini, M.; Zhu, Y.; Wall, S.; Tobey, R. I.; Ehrke, H.; Garl, T. et al.
Object Type:
Article
System:
The UNT Digital Library
U.S. Department of Energy, Office of Legacy Management Program Update, April-June 2009
Welcome to the April-June 2009 issue of the U.S. Department of Energy (DOE) Office of Legacy Management (LM) Program Update. This publication is designed to provide a status of activities within LM. The Legacy Management goals are: (1) Protect human health and the environment through effective and efficient long-term surveillance and maintenance - This goal highlights DOE's responsibility to ensure long-term protection of people, the environment, and the integrity of engineered remedies and monitoring systems. (2) Preserve, protect, and make accessible legacy records and information - This goal recognizes LM's commitment to successfully manage records, information, and archives of legacy sites under its authority. (3) Support an effective and efficient work force structured to accomplish Departmental missions and assure continuity of contractor worker pension and medical benefits - This goal recognizes DOE's commitment to its contracted work force and the consistent management of pension and health benefits. As sites continue to close, DOE faces the challenges of managing pension plan and health benefits liability. (4) Manage legacy land and assets, emphasizing protective real and personal property reuse and disposition - This goal recognizes a DOE need for local collaborative management of legacy assets, including coordinating land use planning, personal property …
Date:
April 1, 2009
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Ultracapacitor Applications and Evaluation for Hybrid Electric Vehicles
Describes the use of ultracapacitors in advanced hybrid and electric vehicles and discusses thermal and electrical testing of lithium ion capacitors for HEV applications.
Date:
April 1, 2009
Creator:
Pesaran, A.; Gonder, J. & Keyser, M.
Object Type:
Presentation
System:
The UNT Digital Library
Understanding Lustre Internals
Lustre was initiated and funded, almost a decade ago, by the U.S. Department of Energy (DoE) Office of Science and National Nuclear Security Administration laboratories to address the need for an open source, highly-scalable, high-performance parallel filesystem on by then present and future supercomputing platforms. Throughout the last decade, it was deployed over numerous medium-to-large-scale supercomputing platforms and clusters, and it performed and met the expectations of the Lustre user community. As it stands at the time of writing this document, according to the Top500 list, 15 of the top 30 supercomputers in the world use Lustre filesystem. This report aims to present a streamlined overview on how Lustre works internally at reasonable details including relevant data structures, APIs, protocols and algorithms involved for Lustre version 1.6 source code base. More importantly, it tries to explain how various components interconnect with each other and function as a system. Portions of this report are based on discussions with Oak Ridge National Laboratory Lustre Center of Excellence team members and portions of it are based on our own understanding of how the code works. We, as the authors team bare all responsibilities for all errors and omissions in this document. We can …
Date:
April 1, 2009
Creator:
Wang, Feiyi; Oral, H Sarp; Shipman, Galen M; Drokin, Oleg; Wang, Di & Huang, He
Object Type:
Report
System:
The UNT Digital Library
Uniform-Format Solid Feedstock Supply System: A Commodity-Scale Design to Produce an Infrastructure-Compatible Bulk Solid from Lignocellulosic Biomass -- Executive Summary
This report, Uniform-Format Solid Feedstock Supply System: A Commodity-Scale Design to Produce an Infrastructure-Compatible Bulk Solid from Lignocellulosic Biomass, prepared by Idaho National Laboratory (INL), acknowledges the need and provides supportive designs for an evolutionary progression from present day conventional bale-based supply systems to a uniform-format, bulk solid supply system that transitions incrementally as the industry launches and matures. These designs couple to and build from current state of technology and address science and engineering constraints that have been identified by rigorous sensitivity analyses as having the greatest impact on feedstock supply system efficiencies and costs.
Date:
April 1, 2009
Creator:
Hess, J. Richard; Wright, Christopher T.; Kenney, Kevin L. & Searcy, Erin M.
Object Type:
Report
System:
The UNT Digital Library
The United Nations Convention on the Rights of the Child: Background and Policy Issues
This report provides an overview of the United Nations Convention on the Rights of the Child (CRC) and examines evolving U.S. policy toward the Convention, including past and current Administration positions and congressional perspectives. The report also highlights issues for the 111th Congress, including the Convention's possible impact on federal and state laws, U.S. sovereignty, parental rights, and U.S. family planning and abortion policy.
Date:
April 1, 2009
Creator:
Blanchfield, Luisa
Object Type:
Report
System:
The UNT Digital Library
The University News (Irving, Tex.), Vol. 34, No. [20], Ed. 1 Wednesday, April 1, 2009
Weekly student newspaper from the University of Dallas in Irving, Texas that includes campus news and commentaries along with advertising.
Date:
April 1, 2009
Creator:
Tetzlaff, Mary
Object Type:
Newspaper
System:
The Portal to Texas History
Update on DOE’s Nuclear Energy University Program
The Center for Advanced Energy Studies (CAES) Nuclear Energy University Program Office assists the U.S. Department of Energy Office of Nuclear Energy (DOE-NE) by administering its University Program. To promote accountable relationships between universities and the TIOs/TDOs, a process was designed and administered which includes two competitive Requests for Proposals (RFP’s) and two FOAs in the following areas: (1)Research and Development Grants, (2)Infrastructure improvement, and (3)Scholarships and Fellowships. NEUP will also host periodic reviews of university mission-specific R&D that document progress, reinforce accountability, and assess return on investment; sponsor workshops that inform universities of the Department’s research needs to facilitate continued alignment of university R&D with NE missions; and conduct communications activities that foster stakeholder trust, serve as a catalyst for accomplishing NEUP objectives, and provide national visibility of NEUP activities and accomplishments. Year to date efforts to achieve these goals will be discussed.
Date:
April 1, 2009
Creator:
Lambregts, M. J.
Object Type:
Article
System:
The UNT Digital Library
Update on Electron-Cloud Simulations Using the Package WARP-POSINST
At PAC05[1] and PAC07[2], we presented the package WARP-POSINST for the modeling of the effect of electron clouds on high-energy beams. We present here the latest developments in the package. Three new modes of operations were implemented: (1) a build-up mode where, similarly to POSINST (LBNL) or ECLOUD (CERN), the build-up of electron clouds driven by a legislated bunch train is modeled in one region of an accelerator; (2) a quasistatic mode where, similarly to HEADTAIL (CERN) or QuickPIC (USC/UCLA), the frozen beam approximation is used to split the modeling of the beam and the electrons into two components evolving on their respective time scales; and (3) a Lorentz boosted mode where the simulation is performed in a moving frame where the space and time scales related to the beam and electron dynamics fall in the same range. The implementation of modes (1) and (2) was primary motivated by the need for benchmarking with other codes, while the implementation of mode (3) fulfills the drive toward fully self-consistent simulations of e-cloud effects on the beam including the build-up phase.
Date:
April 1, 2009
Creator:
Vay, J. L.; Celata, Christine M.; Furman, Miguel; Venturini, Marco; Sonnad, Kiran G.; Penn, G. et al.
Object Type:
Article
System:
The UNT Digital Library
Using Multiple Unmanned Systems for a Site Security Task
Unmanned systems are often used to augment the ability of humans to perform challenging tasks. While the value of individual unmanned vehicles have been proven for a variety of tasks, it is less understood how multiple unmanned systems should be used together to accomplish larger missions such as site security. The purpose of this paper is to discuss efforts by researchers at the Idaho National Laboratory (INL) to explore the utility and practicality of operating multiple unmanned systems for a site security mission. This paper reviews the technology developed for a multi-agent mission and summarizes the lessons-learned from a technology demonstration.
Date:
April 1, 2009
Creator:
Anderson, Matthew O.; Nielsen, Curtis W.; McKay, Mark D.; Wadsworth, Derek C.; Hruska, Ryan C. & Koudelka, John A.
Object Type:
Article
System:
The UNT Digital Library
VÄ›stnĂk (Temple, Tex.), Vol. 97, No. 13, Ed. 1 Wednesday, April 1, 2009
Weekly Czech and English language newspaper from Temple, Texas published as the official organ of the Slavonic Benevolent Order of the State of Texas that includes news of interest to members along with advertising.
Date:
April 1, 2009
Creator:
Zavodny, Melanie
Object Type:
Newspaper
System:
The Portal to Texas History
VISION: Verifiable Fuel Cycle Simulation Model
The nuclear fuel cycle is a very complex system that includes considerable dynamic complexity as well as detail complexity. In the nuclear power realm, there are experts and considerable research and development in nuclear fuel development, separations technology, reactor physics and waste management. What is lacking is an overall understanding of the entire nuclear fuel cycle and how the deployment of new fuel cycle technologies affects the overall performance of the fuel cycle. The Advanced Fuel Cycle Initiative’s systems analysis group is developing a dynamic simulation model, VISION, to capture the relationships, timing and delays in and among the fuel cycle components to help develop an understanding of how the overall fuel cycle works and can transition as technologies are changed. This paper is an overview of the philosophy and development strategy behind VISION. The paper includes some descriptions of the model and some examples of how to use VISION.
Date:
April 1, 2009
Creator:
Jacobson, Jacob J.; Yacout, Abdellatif M.; Matthern, Gretchen E.; Piet, Steven J. & Shropshire, David E.
Object Type:
Article
System:
The UNT Digital Library
Water Quality Trends in the Entiat River Subbasin: Final 2008 Annual Report.
None
Date:
April 1, 2009
Creator:
Woodsmith, Richard & Bookter, Andy
Object Type:
Report
System:
The UNT Digital Library
The Wild and Scenic Rivers Act and Federal Water Rights
This report discusses federal authority over water, and federal "reserved" and non-reserved water rights. Based on the language of the act and its legislative history, it appears that the act creates federal water rights.
Date:
April 1, 2009
Creator:
Brougher, Cynthia
Object Type:
Report
System:
The UNT Digital Library
Wildland Fire Management: Actions by Federal Agencies and Congress Could Mitigate Rising Fire Costs and Their Effects on Other Agency Programs
Testimony issued by the Government Accountability Office with an abstract that begins "Our nation's wildland fire problems have worsened in the past decade. The Forest Service within the Department of Agriculture and four agencies within the Department of the Interior (Interior) are responsible for managing fires on federal lands. Federal appropriations to these agencies for wildland fire management have more than doubled since the late 1990s, averaging $2.9 billion annually in recent years. Rising wildland fire costs have challenged the agencies to meet their land management responsibilities. This testimony, based on previous GAO reports, discusses (1) the budgetary and programmatic effects of the increasing cost of fire management activities and (2) steps the agencies could take to help contain wildland fire expenditures and steps they could take, and Congress could consider, to reduce the need to transfer funds from other programs."
Date:
April 1, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
The WIMP Forest: Indirect Detection of a Chiral Square
The spectrum of photons arising from WIMP annihilation carries a detailed imprint of the structure of the dark sector. In particular, loop-level annihilations into a photon and another boson can in principle lead to a series of lines (a WIMP forest) at energies up to the WIMP mass. A specific model which illustrates this feature nicely is a theory of two universal extra dimensions compactified on a chiral square. Aside from the continuum emission, which is a generic prediction of most dark matter candidates, we find a 'forest' of prominent annihilation lines that, after convolution with the angular resolution of current experiments, leads to a distinctive (2-bump plus continuum) spectrum, which may be visible in the near future with the Fermi Gamma-Ray Space Telescope (formerly known as GLAST).
Date:
April 1, 2009
Creator:
Bertone, Gianfranco; Jackson, C.B.; Shaughnessy, Gabe; Tait, Tim M.P. & Vallinotto, Alberto
Object Type:
Article
System:
The UNT Digital Library
Wind Issues in Solar Thermal Performance Ratings: Preprint
We suggest that wind bias against unglazed solar water heaters be mitigated by using a calibrated collector model to derive a wind correction to the measured efficiency curve.
Date:
April 1, 2009
Creator:
Burch, J. & Casey, R.
Object Type:
Article
System:
The UNT Digital Library
Wind Power Today: Building a New Energy Future, Wind and Hydropower Technologies Program 2009 (Brochure)
Wind Power Today is an annual publication that provides an overview of the wind energy research conducted by the U.S. Department of Energy Wind and Hydropower Technologies Program.
Date:
April 1, 2009
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Wind Powering America - Outreach in Priority States (Poster)
WPA works with 33 State Wind Working Groups to educate stakeholders on wind energy topics and to achieve the basics needed for effective wind development in a state. WPA has accelerated outreach and communication efforts with 13 priority states: Alaska, Arizona, Indiana, Maryland, Massachussetts, Michigan, Nebraska, Nevada, North Carolina, Ohio, South Dakota, Utah, and Virginia. These states have the potential to contribute substantially to the national portfolio of wind energy but do not yet have large amounts of wind energy applications on the ground. This is often due to barriers in in-state knowledge and understanding of wind energy issues and potential that impact the policy environment and the market environment. There are common regional issues among the states, and important learning opportunities can be gained by cross-training and sharing experiences. The Regional Wind Energy Institutes (RWEIs) are train-the-trainer organizations that work to develop a cadre of in-state outreach specialists who reach out to audiences of decisionmakers (e.g., the ag community, state and local officials, utilities, regulatory bodies) to build understanding, create public acceptance, take advantage of regional synergies, and eventually to impact polices and the market environment for effective wind implementation.
Date:
April 1, 2009
Creator:
Kelly, M. & Flowers, L.
Object Type:
Article
System:
The UNT Digital Library
Workforce Development: A Survey of Industry Needs and Training Approaches
This paper presents information and data collected during 2008 on PV workforce needs by the Interstate Renewable Energy Council for the U.S. Department of Energy. The data was collected from licensed contractors, PV practitioners, educators and expert instructors at training sessions, and at focus group and advisory committee meetings. Respondents were primarily from three states: Florida, New York and California. Other states were represented, but to a lesser extent. For data collection, a 12-item questionnaire was developed that addressed key workforce development issues from the perspectives of both the PV industry and training institutions. A total of 63 responses were collected, although not every respondent answered every question. Industry representatives slightly outnumbered the educators, although the difference in responses was not significant.
Date:
April 1, 2009
Creator:
Ventre, Jerry & Weissman, Jane
Object Type:
Article
System:
The UNT Digital Library
The Wylie News (Wylie, Tex.), Vol. [61], No. 46, Ed. 1 Wednesday, April 1, 2009
Weekly newspaper from Wylie, Texas that includes local, state and national news along with advertising.
Date:
April 1, 2009
Creator:
Engbrock, Chad B.
Object Type:
Newspaper
System:
The Portal to Texas History
Yoakum Herald-Times (Yoakum, Tex.), Vol. 117, No. 13, Ed. 1 Wednesday, April 1, 2009
Weekly newspaper from Yoakum, Texas that includes local, state, and national news along with advertising.
Date:
April 1, 2009
Creator:
McCracken, Michael S.
Object Type:
Newspaper
System:
The Portal to Texas History