16,882 Matching Results

Results open in a new window/tab. Unexpected Results? Search the Catalog Instead.

The Energy Science and Technology Database on a local library system: A case study at the Los Alamos National Research Library (open access)

The Energy Science and Technology Database on a local library system: A case study at the Los Alamos National Research Library

This paper presents an overview of efforts at Los Alamos National Laboratory to acquire and mount the Energy Science and Technology Database (EDB) as a citation database on the Research Library`s Geac Advance system. The rationale for undertaking this project and expected benefits are explained. Significant issues explored are loading non-USMARC records into a MARC-based library system, the use of EDB records to replace or supplement in-house cataloging of technical reports, the impact of different cataloging standards and database size on searching and retrieval, and how integrating an external database into the library`s online catalog may affect staffing and workflow.
Date: October 1, 1994
Creator: Holtkamp, I. S.
Object Type: Article
System: The UNT Digital Library
Integrating the digital library puzzle: The library without walls at Los Alamos (open access)

Integrating the digital library puzzle: The library without walls at Los Alamos

Current efforts at the Research Library, Los Alamos National Laboratory (LANL), to develop digital library services are described. A key principle of LANL`s approach to delivering library information is the integration of products into a common interface and the use of the Web as the medium of service provision. Products described include science databases such as the SciSearch at LANL and electronic journals. Project developments described have significant ramifications for delivering library services over the Internet.
Date: December 1, 1998
Creator: Luce, R.E.
Object Type: Article
System: The UNT Digital Library
Shaping the library of the future: Digital library developments at Los Alamos National Laboratory`s Research Library (open access)

Shaping the library of the future: Digital library developments at Los Alamos National Laboratory`s Research Library

This paper offers an overview of current efforts at the Research Library, Los Alamos National Laboratory, (LANL), to develop digital library services. Current projects of LANL`s Library without Walls initiative are described. Although the architecture of digital libraries generally is experimental and subject to debate, one principle of LANL`s approach to delivering library information is the use of Mosaic as a client for the Research Library`s resources. Several projects under development have significant ramifications for delivering library services over the Internet. Specific efforts via Mosaic include support for preprint databases, providing access to citation databases, and access to a digital image database of unclassified Los Alamos technical reports.
Date: October 1, 1994
Creator: Luce, R. E.
Object Type: Article
System: The UNT Digital Library
The virtual library in action: Collaborative international control of high-energy physics pre-print (open access)

The virtual library in action: Collaborative international control of high-energy physics pre-print

This paper will discuss how control of the grey literature in high-energy physics pre-prints developed through a collaborative effort of librarians and physicists. It will highlight the critical steps in the development process and describe one model of a rapidly evolving virtual library for high-energy physics information. In conclusion, this paper will extend this physics model to other areas of grey literature management.
Date: February 1, 1996
Creator: Kreitz, P.A.; Addis, L.; Galic, H. & Johnson, T.
Object Type: Article
System: The UNT Digital Library
Climate change and water supply, management and use: A literature review (open access)

Climate change and water supply, management and use: A literature review

There is evidence that atmospheric concentrations Of C0{sub 2}, tropospheric 0{sub 3}, and CH{sub 4}, among other gases that contribute to the greenhouse effect, have increased in recent decades, and that these changes may induce changes in global air temperatures and regional climate features in coming years. A literature review was conducted to sample the literature base on which our understanding of the water resource impacts of climate change rests. Water resource issues likely to be important include hydrologic response to climate change, the resilience of water supply systems to changing climatic and hydrologic conditions, and the effects of climate change on water quality and water uses (such as navigation and energy generation). A computer-assisted search of literature on the effects of climate change on these subjects was conducted. All studies were classified by type of paper (e.g., review, discussion, case study), region, water resource variable studied, and source of climate scenario. The resulting bibliography containing more than 200 references was largely annotated. Case studies of potential hydrologic impacts have been more common than studies of impacts on water management or water use, but this apparent research gap is decreasing. Case studies demonstrating methods of incorporating potential risks of climate …
Date: May 1, 1992
Creator: Chang, L. H.; Draves, J. D. & Hunsaker, C. T.
Object Type: Report
System: The UNT Digital Library
Literature information applicable to the reaction of uranium oxides with chlorine to prepare uranium tetrachloride (open access)

Literature information applicable to the reaction of uranium oxides with chlorine to prepare uranium tetrachloride

The reaction of uranium oxides and chlorine to prepare anhydrous uranium tetrachloride (UCl{sub 4}) are important to more economical preparation of uranium metal. The most practical reactions require carbon or carbon monoxide (CO) to give CO or carbon dioxide (CO{sub 2}) as waste gases. The chemistry of U-O-Cl compounds is very complex with valances of 3, 4, 5, and 6 and with stable oxychlorides. Literature was reviewed to collect thermochemical data, phase equilibrium information, and results of experimental studies. Calculations using thermodynamic data can identify the probable reactions, but the results are uncertain. All the U-O-Cl compounds have large free energies of formation and the calculations give uncertain small differences of large numbers. The phase diagram for UCl{sub 4}-UO{sub 2} shows a reaction to form uranium oxychloride (UOCl{sub 2}) that has a good solubility in molten UCl{sub 4}. This appears more favorable to good rates of reaction than reaction of solids and gases. There is limited information on U-O-Cl salt properties. Information on the preparation of titanium, zirconium, silicon, and thorium tetrachlorides (TiCl{sub 4}, ZrCl{sub 4}, SiCl{sub 4}, ThCl{sub 4}) by reaction of oxides with chlorine (Cl{sub 2}) and carbon has application to the preparation of UCl{sub 4}.
Date: February 1, 1992
Creator: Haas, P.A.
Object Type: Report
System: The UNT Digital Library
Literature information applicable to the reaction of uranium oxides with chlorine to prepare uranium tetrachloride (open access)

Literature information applicable to the reaction of uranium oxides with chlorine to prepare uranium tetrachloride

The reaction of uranium oxides and chlorine to prepare anhydrous uranium tetrachloride (UCl{sub 4}) are important to more economical preparation of uranium metal. The most practical reactions require carbon or carbon monoxide (CO) to give CO or carbon dioxide (CO{sub 2}) as waste gases. The chemistry of U-O-Cl compounds is very complex with valances of 3, 4, 5, and 6 and with stable oxychlorides. Literature was reviewed to collect thermochemical data, phase equilibrium information, and results of experimental studies. Calculations using thermodynamic data can identify the probable reactions, but the results are uncertain. All the U-O-Cl compounds have large free energies of formation and the calculations give uncertain small differences of large numbers. The phase diagram for UCl{sub 4}-UO{sub 2} shows a reaction to form uranium oxychloride (UOCl{sub 2}) that has a good solubility in molten UCl{sub 4}. This appears more favorable to good rates of reaction than reaction of solids and gases. There is limited information on U-O-Cl salt properties. Information on the preparation of titanium, zirconium, silicon, and thorium tetrachlorides (TiCl{sub 4}, ZrCl{sub 4}, SiCl{sub 4}, ThCl{sub 4}) by reaction of oxides with chlorine (Cl{sub 2}) and carbon has application to the preparation of UCl{sub 4}.
Date: February 1, 1992
Creator: Haas, P. A.
Object Type: Report
System: The UNT Digital Library
Issues in Benchmarking Human Reliability Analysis Methods: A Literature Review. (open access)

Issues in Benchmarking Human Reliability Analysis Methods: A Literature Review.

There is a diversity of human reliability analysis (HRA) methods available for use in assessing human performance within probabilistic risk assessment (PRA). Due to the significant differences in the methods, including the scope, approach, and underlying models, there is a need for an empirical comparison investigating the validity and reliability of the methods. To accomplish this empirical comparison, a benchmarking study is currently underway that compares HRA methods with each other and against operator performance in simulator studies. In order to account for as many effects as possible in the construction of this benchmarking study, a literature review was conducted, reviewing past benchmarking studies in the areas of psychology and risk assessment. A number of lessons learned through these studies are presented in order to aid in the design of future HRA benchmarking endeavors.
Date: April 1, 2008
Creator: Lois, Erasmia; Forester, John Alan; Tran, Tuan Q.; Hendrickson, Stacey M. Langfitt & Boring, Ronald L.
Object Type: Report
System: The UNT Digital Library
Summary of literature review of risk communication: Hanford Environmental Dose Reconstruction Project (open access)

Summary of literature review of risk communication: Hanford Environmental Dose Reconstruction Project

The Hanford Environmental Dose Reconstruction (HEDR) Project will estimate radiation exposures people may have received from radioactive materials released during past operations at the Department of Energy's Hanford Site near Richland, Washington. The project is being conducted by Pacific Northwest Laboratory (PNL) under the direction of an independent Technical Steering Panel (TSP). The Centers for Disease Control (CDC) will use HEDR dose estimates in studies to investigate a potential link between thyroid disease and historical Hanford emissions. The HEDR Project was initiated to address public concerns about the possible health impacts from past releases of radioactive materials from Hanford. The TSP recognized early in the project that special mechanisms would be required to communicate effectively to the many different concerned audiences. To identify and develop these mechanisms, the TSP issued Directive 89-7 to PNL in May 1989. The TSP directed PNL to examine methods to communicate the causes and effects of uncertainties in the dose estimates. A literature review was conducted as the first activity in response to the TSP's directive. This report presents the results of the literature review. The objective of the literature review was to identify key principles'' that could be applied to develop communications strategies for …
Date: May 1, 1991
Creator: Byram, S.J.
Object Type: Report
System: The UNT Digital Library
An Adaptive System Approach to the Implementation and Evaluation of Digital Library Recommendation Systems (open access)

An Adaptive System Approach to the Implementation and Evaluation of Digital Library Recommendation Systems

None
Date: May 1, 2000
Creator: Bollen, J. & Rocha, L.
Object Type: Article
System: The UNT Digital Library
Full-text information services at the desktop (open access)

Full-text information services at the desktop

In order to develop true electronic information services, libraries will be called upon to deliver a wide array of full-text documents to users` desktop computers. This requirement can currently be seen in the demands for electronic access to the ever-growing array of federal, state and local regulations covering almost any activity at DOE sites. The Hanford Technical Library has put together a new online statutory and regulatory information service, SARIS, that is described in this paper. SARIS is expected to serve as a platform fort the delivery of additional full-text information sources in the future.
Date: December 1, 1993
Creator: Judy, J. R.
Object Type: Article
System: The UNT Digital Library
Climate change and water supply, management and use: A literature review (open access)

Climate change and water supply, management and use: A literature review

There is evidence that atmospheric concentrations Of C0{sub 2}, tropospheric 0{sub 3}, and CH{sub 4}, among other gases that contribute to the greenhouse effect, have increased in recent decades, and that these changes may induce changes in global air temperatures and regional climate features in coming years. A literature review was conducted to sample the literature base on which our understanding of the water resource impacts of climate change rests. Water resource issues likely to be important include hydrologic response to climate change, the resilience of water supply systems to changing climatic and hydrologic conditions, and the effects of climate change on water quality and water uses (such as navigation and energy generation). A computer-assisted search of literature on the effects of climate change on these subjects was conducted. All studies were classified by type of paper (e.g., review, discussion, case study), region, water resource variable studied, and source of climate scenario. The resulting bibliography containing more than 200 references was largely annotated. Case studies of potential hydrologic impacts have been more common than studies of impacts on water management or water use, but this apparent research gap is decreasing. Case studies demonstrating methods of incorporating potential risks of climate …
Date: May 1, 1992
Creator: Chang, L. H.; Draves, J. D. & Hunsaker, C. T.
Object Type: Report
System: The UNT Digital Library
Scientific and Technical Information (STI)....what`s the status? (open access)

Scientific and Technical Information (STI)....what`s the status?

In 1982, the Pacific Northwest Laboratory (PNL) developed an electronic Publications and Presentations Registry designed to track Scientific and Technical Information (STI) products through PNL and Department of Energy (DOE) programmatic reviews. All information forwarded to the Office of Scientific and Technical Information (OSTI) for release (e.g., public, UCNI, Export Control) is included in the database. The database contains client and programmatic information for all STI generated by PNL. This electronic format is currently one of the most comprehensive resources for PNL authored and co-authored documents on the Hanford Site.
Date: December 1, 1993
Creator: Varley, D. A.
Object Type: Article
System: The UNT Digital Library
Meta-transport library user`s guide (open access)

Meta-transport library user`s guide

Developing new transport protocols or protocol algorithms suffer from the complexity of the environment in which they are intended to run. Modeling techniques attempt to relieve this by simulating the environment. Our approach to promoting rapid prototyping of protocols and protocol algorithms is to provide a pre-built infrastructure that is common to all transport protocols, so that the focus is placed on the protocol-specific aspects. The Meta-Transport Library is a library of base classes that implement or abstract out the mundane functions of a protocol; new protocol implementations are derived from the base classes. The result is a fully viable transport protocol implementation, with emphasis on modularity. The collection of base classes form a {open_quotes}class-chest{close_quotes} of tools from which protocols can be developed and studied with as little change to a normal mix environment as possible. In addition to supporting protocol designers, this approach has pedagogical uses.
Date: July 1, 1996
Creator: Strayer, W.T.
Object Type: Report
System: The UNT Digital Library
User Manual and Supporting Information for Library of Codes for Centroidal Voronoi Point Placement and Associated Zeroth, First, and Second Moment Determination (open access)

User Manual and Supporting Information for Library of Codes for Centroidal Voronoi Point Placement and Associated Zeroth, First, and Second Moment Determination

The theory, numerical algorithm, and user documentation are provided for a new ''Centroidal Voronoi Tessellation (CVT)'' method of filling a region of space (2D or 3D) with particles at any desired particle density. ''Clumping'' is entirely avoided and the boundary is optimally resolved. This particle placement capability is needed for any so-called ''mesh-free'' method in which physical fields are discretized via arbitrary-connectivity discrete points. CVT exploits efficient statistical methods to avoid expensive generation of Voronoi diagrams. Nevertheless, if a CVT particle's Voronoi cell were to be explicitly computed, then it would have a centroid that coincides with the particle itself and a minimized rotational moment. The CVT code provides each particle's volume and centroid, and also the rotational moment matrix needed to approximate a particle by an ellipsoid (instead of a simple sphere). DIATOM region specification is supported.
Date: February 1, 2002
Creator: BURKARDT, JOHN; GUNZBURGER, MAX; PETERSON, JANET & BRANNON, REBECCA M.
Object Type: Report
System: The UNT Digital Library
Generation of large-scale maps of science and associated indicators. (open access)

Generation of large-scale maps of science and associated indicators.

Over the past several years, techniques have been developed for clustering very large segments of the technical literature using sources such as Thomson ISI's Science Citation Index. The primary objective of this work has been to develop indicators of potential impact at the paper level to enhance planning and evaluation of research. These indicators can also be aggregated at different levels to enable profiling of departments, institutions, agencies, etc. Results of this work are presented as maps of science and technology with various overlays corresponding to the indicators associated with a particular search or question.
Date: December 1, 2005
Creator: Klavans, Richard (SciTech Strategies, Inc., Berwyn, PA) & Boyack, Kevin W.
Object Type: Report
System: The UNT Digital Library
Users guide to the PGAPack parallel genetic algorithm library (open access)

Users guide to the PGAPack parallel genetic algorithm library

PGAPack is a parallel genetic algorithm library that is intended to provide most capabilities desired in a genetic algorithm package, in an integrated, seamless, and portable manner. Key features of PGAPack are as follows: Ability to be called from Fortran or C. Executable on uniprocessors, multiprocessors, multicomputers, and workstation networks. Binary-, integer-, real-, and character-valued native data types. Object-oriented data structure neutral design. Parameterized population replacement. Multiple choices for selection, crossover, and mutation operators. Easy integration of hill-climbing heuristics. Easy-to-use interface for novice and application users. Multiple levels of access for expert users. Full extensibility to support custom operators and new data types. Extensive debugging facilities. Large set of example problems.
Date: January 1, 1996
Creator: Levine, D.
Object Type: Report
System: The UNT Digital Library
The verdict geometric quality library. (open access)

The verdict geometric quality library.

Verdict is a collection of subroutines for evaluating the geometric qualities of triangles, quadrilaterals, tetrahedra, and hexahedra using a variety of metrics. A metric is a real number assigned to one of these shapes depending on its particular vertex coordinates. These metrics are used to evaluate the input to finite element, finite volume, boundary element, and other types of solvers that approximate the solution to partial differential equations defined over regions of space. The geometric qualities of these regions is usually strongly tied to the accuracy these solvers are able to obtain in their approximations. The subroutines are written in C++ and have a simple C interface. Each metric may be evaluated individually or in combination. When multiple metrics are evaluated at once, they share common calculations to lower the cost of the evaluation.
Date: March 1, 2006
Creator: Knupp, Patrick Michael; Ernst, C.D. (Elemental Technologies, Inc., American Fork, UT); Thompson, David C. (Sandia National Laboratories, Livermore, CA); Stimpson, C.J. (Elemental Technologies, Inc., American Fork, UT) & Pebay, Philippe Pierre
Object Type: Report
System: The UNT Digital Library
Library of Advanced Materials for Engineering : LAME. (open access)

Library of Advanced Materials for Engineering : LAME.

Constitutive modeling is an important aspect of computational solid mechanics. Sandia National Laboratories has always had a considerable effort in the development of constitutive models for complex material behavior. However, for this development to be of use the models need to be implemented in our solid mechanics application codes. In support of this important role, the Library of Advanced Materials for Engineering (LAME) has been developed in Engineering Sciences. The library allows for simple implementation of constitutive models by model developers and access to these models by application codes. The library is written in C++ and has a very simple object oriented programming structure. This report summarizes the current status of LAME.
Date: August 1, 2007
Creator: Hammerand, Daniel Carl & Scherzinger, William Mark
Object Type: Report
System: The UNT Digital Library
New Science on the Open Science Grid (open access)

New Science on the Open Science Grid

The Open Science Grid (OSG) includes work to enable new science, new scientists, and new modalities in support of computationally based research. There are frequently significant sociological and organizational changes required in transformation from the existing to the new. OSG leverages its deliverables to the large scale physics experiment member communities to benefit new communities at all scales through activities in education, engagement and the distributed facility. As a partner to the poster and tutorial at SciDAC 2008, this paper gives both a brief general description and some specific examples of new science enabled on the OSG. More information is available at the OSG web site: www.opensciencegrid.org.
Date: June 1, 2008
Creator: Pordes, Ruth; Altunay, Mine; Avery, Paul; Bejan, Alina; Blackburn, Kent; Blatecky, Alan et al.
Object Type: Article
System: The UNT Digital Library
Revised computer programs for ordering, listing, and circulating library books. [Detailed user instructions, but little information on the codes themselves] (open access)

Revised computer programs for ordering, listing, and circulating library books. [Detailed user instructions, but little information on the codes themselves]

None
Date: August 1, 1975
Creator: Feldman, M.S.; Wren, H.F. & Buhl, N.A.
Object Type: Report
System: The UNT Digital Library
Information resources for US Department of Energy pollution prevention programs (open access)

Information resources for US Department of Energy pollution prevention programs

In support of the US Department of Energy`s (DOE`s) pollution prevention efforts being conducted under the aegis of DOE`s Office of Environmental Restoration and Waste Management (EM) program, Pacific Northwest Laboratory was tasked with evaluating pollution prevention information resources. The goal of this activity was to improve the effectiveness of DOE`s pollution prevention activities through improved information flow, both within the complex, and more specifically, between DOE and other organizations that share similar pollution prevention challenges. This report presents our findings with respect to the role of information collection and dissemination within the complex, opportunities for teaming from successes of the private sector, and specific information needs of the DOE pollution prevention community. These findings were derived from a series of interviews with pollution prevention coordinators from across the DOE complex, review of DOE site and facility pollution prevention plans, and workshops with DOE information users as well as an information resources workshop that brought together information specialists from private industry, non-profit organizations, as well as state and regional pollution prevention assistance programs.
Date: January 1, 1994
Creator: Peterson, K. L.; Snowden-Swan, L. J. & Butner, R. S.
Object Type: Report
System: The UNT Digital Library
Historical literature review on waste classification and categorization (open access)

Historical literature review on waste classification and categorization

The Staff of the Waste Management Document Library (WMDL), in cooperation with Allen Croff have been requested to provide information support for a historical search concerning waste categorization/classification. This bibliography has been compiled under the sponsorship of Oak Ridge National Laboratory`s Chemical Technology Division to help in Allen`s ongoing committee work with the NRC/NRCP. After examining the search, Allen Croff saw the value of the search being published. Permission was sought from the database providers to allow limited publication (i.e. 20--50 copies) of the search for internal distribution at the Oak Ridge National Laboratory and for Allen Croff`s associated committee. Citations from the database providers who did not grant legal permission for their material to be published have been omitted from the literature review. Some of the longer citations have been included in an abbreviated form in the search to allow the format of the published document to be shortened from approximately 1,400 pages. The bibliography contains 372 citations.
Date: March 1, 1995
Creator: Croff, A. G.; Richmond, A. A. & Williams, J. P.
Object Type: Report
System: The UNT Digital Library
Los Alamos National Laboratory Research Library: Integrating the present with the future (open access)

Los Alamos National Laboratory Research Library: Integrating the present with the future

Today The LANL Research Library works in challenging times with limited resources, evolving technologies and changing customer needs. In order to balance today`s products and services with tomorrow`s strategic direction it must focus on the present and the future at the same time. It must understand current products and services, customers and suppliers. It needs to continuously work to ensure that customer needs are satisfied. In addition, it should build the groundwork for future innovative products that anticipate customer needs. By planning for future needs while it provides today`s products it will successfully move into the twenty first century as a valuable resource for researchers at Los Alamos National Laboratory. The author will outline the current process for balancing present and future Library products and services for their customers by using a fully integrated business planning system.
Date: July 1, 1997
Creator: Stack, J.M.
Object Type: Article
System: The UNT Digital Library