319,268 Matching Results

This system will be undergoing maintenance April 18th between 9:00AM and 12:00PM CDT.

Search Results

Results: 1 - 24 next
open access

Smart Libraries: Best SQE Practices for Libraries with an Emphasis on Scientific Computing

Description: As scientific computing applications grow in complexity, more and more functionality is being packaged in independently developed libraries. Worse, as the computing environments in which these applications run grow in complexity, it gets easier to make mistakes in building, installing and using libraries as well as the applications that depend on them. Unfortunately, SQA standards so far developed focus primarily on applications, not libraries. We show that SQA standards for libraries differ fr… more
Date: December 15, 2004
Creator: Miller, M C; Reus, J F; Matzke, R P; Koziol, Q A & Cheng, A P
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

12G: code for conversion of isotope-ordered cross-section libraries into group-ordered cross-section libraries

Description: Many current reactor physics codes accept cross-section libraries in an isotope-ordered form, convert them with internal preprocessing routines to a group-ordered form, and then perform calculations using these group-ordered data. Occasionally, because of storage and time limitations, the preprocessing routines in these codes cannot convert very large multigroup isotope-ordered libraries. For this reason, the I2G code, i.e., ISOTXS to GRUPXS, was written to convert externally isotope-ordered cr… more
Date: September 1, 1977
Creator: Resnik, W. M. II & Bosler, G. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Scalable, extensible, and portable numerical libraries

Description: Designing a scalable and portable numerical library requires consideration of many factors, including choice of parallel communication technology, data structures, and user interfaces. The PETSc library (Portable Extensible Tools for Scientific computing) makes use of modern software technology to provide a flexible and portable implementation. This talk will discuss the use of a meta-communication layer (allowing the user to choose different transport layers such as MPI, p4, pvm, or vendor-spe… more
Date: January 1, 1995
Creator: Gropp, W. & Smith, B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The ZOOM Fermilab physics class libraries

Description: Several years ago, the two major collider experiments at Fermilab (D#31; and CDF) decided that new software development for Run II will be largely done in C++. The run is slated to start in 1.5 years, an aggressive time frame for a major change in development language and style. If despite the transition each experiment (and sometimes multiple groups within an experiment) were to develop each needed mod- ule, the C++ strategy would not be advantageous. Thus it was deemed useful to have a librar… more
Date: November 1, 1998
Creator: Mark Fischler, Walter Brown, Philippe Canal and John Marraffino
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Updated decay and photon libraries for the ORIGEN code

Description: Previously existing decay and photon libraries for the ORIGEN computer code were updated by utilizing a variety of sources. Information obtained form the Evaluated Nuclear Structure Data File (ENSDF) at ORNL was used to revise the half-lives, branching ratios, and recoverable heat values for 427 isotopes. Fifty-seven delayed-neutron precursors were included, on the basis of information in ENDF/B-IV. The natural abundances and the Radionuclide Concentration Guide values were updated for all isot… more
Date: February 1, 1979
Creator: Croff, A. G.; Haese, R. L. & Gove, N. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A look at scalable dense linear algebra libraries

Description: We discuss the essential design features of a library of scalable software for performing dense linear algebra computations on distributed memory concurrent computers. The square block scattered decomposition is proposed as a flexible and general-purpose way of decomposing most, if not all, dense matrix problems. An object- oriented interface to the library permits more portable applications to be written, and is easy to learn and use, since details of the parallel implementation are hidden fro… more
Date: July 1, 1992
Creator: Dongarra, J. J.; van de Geijn, R. & Walker, D. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A look at scalable dense linear algebra libraries

Description: We discuss the essential design features of a library of scalable software for performing dense linear algebra computations on distributed memory concurrent computers. The square block scattered decomposition is proposed as a flexible and general-purpose way of decomposing most, if not all, dense matrix problems. An object- oriented interface to the library permits more portable applications to be written, and is easy to learn and use, since details of the parallel implementation are hidden fro… more
Date: July 1, 1992
Creator: Dongarra, J. J.; van de Geijn, R. & Walker, D. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Capture Gamma-Ray Libraries for Nuclear Applications

Description: The neutron capture reaction is useful in identifying and analyzing the gamma-ray spectrum from an unknown assembly as it gives unambiguous information on its composition. This can be done passively or actively where an external neutron source is used to probe an unknown assembly. There are known capture gamma-ray data gaps in the ENDF libraries used by transport codes for various nuclear applications. The Evaluated Gamma-ray Activation file (EGAF) is a new thermal neutron capture database of d… more
Date: May 1, 2010
Creator: Sleaford, B.W.; Firestone, Richard B.; Summers, N.; Escher, J.; Hurst, A.; Krticka, M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

MOX Cross-Section Libraries for ORIGEN-ARP

Description: The use of mixed-oxide (MOX) fuel in commercial nuclear power reactors operated in Europe has expanded rapidly over the past decade. The predicted characteristics of MOX fuel such as the nuclide inventories, thermal power from decay heat, and radiation sources are required for design and safety evaluations, and can provide valuable information for non-destructive safeguards verification activities. This report describes the development of computational methods and cross-section libraries suitab… more
Date: July 1, 2003
Creator: Gauld, I. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Preparation of PAC libraries. Final technical report

Description: The goals of this project were to create P1 Artificial Chromosome (PAC) cloning vectors and use these vectors to generate, characterize, and distribute both human and mouse genomic PAC libraries to the scientific community.
Date: December 31, 1997
Creator: Jong, Pieter J. de
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Chromosome region-specific libraries for human genome analysis

Description: We have made important progress since the beginning of the current grant year. We have further developed the microdissection and PCR- assisted microcloning techniques using the linker-adaptor method. We have critically evaluated the microdissection libraries constructed by this microtechnology and proved that they are of high quality. We further demonstrated that these microdissection clones are useful in identifying corresponding YAC clones for a thousand-fold expansion of the genomic coverage… more
Date: January 1, 1991
Creator: Kao, Fa-Ten.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Chromosome region-specific libraries for human genome analysis

Description: During the grant period progress has been made in the successful demonstration of regional mapping of microclones derived from microdissection libraries; successful demonstration of the feasibility of converting microclones with short inserts into yeast artificial chromosome clones with very large inserts for high resolution physical mapping of the dissected region; Successful demonstration of the usefulness of region-specific microclones to isolate region-specific cDNA clones as candidate gene… more
Date: August 1, 1992
Creator: Kao, Fa-Ten.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

LLNL nuclear data libraries used for fusion calculations

Description: The Physical Data Group of the Computational Physics Division of the Lawrence Livermore National Laboratory has as its principal responsibility the development and maintenance of those data that are related to nuclear reaction processes and are needed for Laboratory programs. Among these are the Magnetic Fusion Energy and the Inertial Confinement Fusion programs. To this end, we have developed and maintain a collection of data files or libraries. These include: files of experimental data of neu… more
Date: May 21, 1984
Creator: Howerton, R. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The design of linear algebra libraries for high performance computers

Description: This paper discusses the design of linear algebra libraries for high performance computers. Particular emphasis is placed on the development of scalable algorithms for MIMD distributed memory concurrent computers. A brief description of the EISPACK, LINPACK, and LAPACK libraries is given, followed by an outline of ScaLAPACK, which is a distributed memory version of LAPACK currently under development. The importance of block-partitioned algorithms in reducing the frequency of data movement betwe… more
Date: August 1, 1993
Creator: Dongarra, J. J. & Walker, D. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Neutron Capture Gamma-Ray Libraries for Nuclear Applications

Description: The neutron capture reaction is useful in identifying and analyzing the gamma-ray spectrum from an unknown assembly as it gives unambiguous information on its composition. this can be done passively or actively where an external neutron source is used to probe an unknown assembly. There are known capture gamma-ray data gaps in the ENDF libraries used by transport codes for various nuclear applications. The Evaluated Gamma-ray Activation file (EGAF) is a new thermal neutron capture database of d… more
Date: November 4, 2010
Creator: Sleaford, B. W.; Firestone, R. B.; Summers, N.; Escher, J.; Hurst, A.; Krticka, M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The evolution of secondary organization in immune system gene libraries

Description: A binary model of the immune system is used to study the effects of evolution on the genetic encoding for antibody molecules. We report experiments which show that the evolution of immune system genes, simulated by the genetic algorithm, can induce a high degree of genetic organization even though that organization is not explicitly required by the fitness function. This secondary organization is related to the true fitness of an individual, in contrast to the sampled fitness which is the expli… more
Date: February 1, 1993
Creator: Hightower, R.; Forrest, S. & Perelson, A. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Experience With the SCALE Criticality Safety Cross Section Libraries

Description: This report provides detailed information on the SCALE criticality safety cross-section libraries. Areas covered include the origins of the libraries, the data on which they are based, how they were generated, past experience and validations, and performance comparisons with measured critical experiments and numerical benchmarks. The performance of the SCALE criticality safety cross-section libraries on various types of fissile systems are examined in detail. Most of the performance areas are d… more
Date: August 21, 2000
Creator: Bowman, S. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The evolution of secondary organization in immune system gene libraries

Description: A binary model of the immune system is used to study the effects of evolution on the genetic encoding for antibody molecules. We report experiments which show that the evolution of immune system genes, simulated by the genetic algorithm, can induce a high degree of genetic organization even though that organization is not explicitly required by the fitness function. This secondary organization is related to the true fitness of an individual, in contrast to the sampled fitness which is the expli… more
Date: January 1, 1993
Creator: Hightower, R.; Forrest, S. (New Mexico Univ., Albuquerque, NM (United States). Dept. of Computer Science) & Perelson, A.S. (Los Alamos National Lab., NM (United States))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Production of Arrayed and Rearrayed cDNA Libraries for Public Use

Description: Researchers studying genes and their protein products need an easily available source for that gene. The I.M.A.G.E. Consortium at Lawrence Livermore National Laboratory is an important source of such genes in the form of arrayed cDNA libraries. The arrayed clones and associated data are available to the public, free of restriction. Libraries are transformed and titered into 384-well master plates, from which 2-8 copies are made. One copy plate is stored by LLNL while others are sent to sequenci… more
Date: August 29, 2005
Creator: Rasmussen, K
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Collaborating over the web: Libraries and laboratries or the librarian and the webmaster

Description: Fermilab [HREF1] has been using World Wide Web [HREF2] (WWW) servers and browsers for the past several years. The purpose has been to allow information sharing within internationally dispersed teams of large collaborations of high energy physics experimenters and to make possible the easy dissemination of information by support groups who work with those collaborations. That is, the purpose has been in fact that for which was created at CERN [HREF3] beginning in March 1989. In the remainder of … more
Date: March 1, 1995
Creator: Garrett, P. & Ritchie, D. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Photon production assessment for the MCNP{trademark} data libraries

Description: The goal of the Multispectral Neutron Logging project was to estimate minimum detection thresholds for environmental contaminants using nuclear well-logging techniques. The specific method was to identify and quantify contaminants from the discrete photons from thermal neutron capture reactions in the formation. Computer simulations using MCNP4A were used to benchmark the computer code against experimental data, and then to predict minimum detection thresholds for other contaminants. High quali… more
Date: March 1, 1996
Creator: Frankle, S. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen