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Note: This page contains sample records for the topic "obtain information critical" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Terra-Gen Powers Coso Geothermal Facility Obtains Critical Federal...  

Open Energy Info (EERE)

Obtains Critical Federal Permit to Increase Its Renewable Energy Generation Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Terra-Gen Powers Coso...

2

Generalized mutual informations of quantum critical chains  

E-Print Network [OSTI]

We study the R\\'enyi mutual information $\\tilde{I}_n$ of the ground state of different critical quantum chains. The R\\'enyi mutual information definition that we use is based on the well established concept of the R\\'enyi divergence. We calculate this quantity numerically for several distinct quantum chains having either discrete $Z(Q)$ symmetries (Q-state Potts model with $Q=2,3,4$ and $Z(Q)$ parafermionic models with $Q=5,6,7,8$ and also Ashkin-Teller model with different anisotropies) or the $U(1)$ continuous symmetries(Klein-Gordon field theory, XXZ and spin-1 Fateev-Zamolodchikov quantum chains with different anisotropies). For the spin chains these calculations were done by expressing the ground-state wavefunctions in two special basis. Our results indicate some general behavior for particular ranges of values of the parameter $n$ that defines $\\tilde{I}_n$. For a system, with total size $L$ and subsystem sizes $\\ell$ and $L-\\ell$, the$\\tilde{I}_n$ has a logarithmic leading behavior given by $\\frac{\\til...

Alcaraz, F C

2015-01-01T23:59:59.000Z

3

U-017: HP MFP Digital Sending Software Lets Local Users Obtain Potentially Sensitive Information  

Broader source: Energy.gov [DOE]

A vulnerability was reported in HP MFP Digital Sending Software. A local user can obtain potentially sensitive information.

4

U-163: PHP Command Parameter Bug Lets Remote Users Obtain Potentially Sensitive Information and Execute Arbitrary Code  

Broader source: Energy.gov [DOE]

A vulnerability was reported in PHP. A remote user can obtain potentially sensitive information. A remote user can execute arbitrary code on the target system.

5

Scope and limitations of high energy electron scattering in obtaining relevant structural information about atoms and molecules  

SciTech Connect (OSTI)

During the course of this work experiments were undertaken to measure the scattering cross-sections for high energy electrons scattering from various target systems. The experiments can be broadly classified into two categories, one dealing with rather small systems and the other dealing with large systems (at least in the view of physicists). Although the experimental aspects, in so much as the experimental measurement of the intensities of the scattered electron is concerned, is the same for both the cases the motivation for performing the experiment is totally different. In the first case, simple atomic and molecular target systems, namely He, H/sub 2/ and D/sub 2/, are used. For such systems, good theoretical framework is available and critical comparisons of experimental cross sections are made with theoretical predictions. Attention is focussed mainly at small momentum transfer (up to 10A/sup -1/), and correlation and binding effects are studied. In the second case, somewhat larger molecular systems, namely naphthalene, anthraquinone, anthracene and dichromium tetraacetate are used. For such systems attention is focused at large momentum transfer (from 10 to 25 A/sup -1/) to obtain structural information about the molecules.

Ketkar, S.N.

1984-01-01T23:59:59.000Z

6

Information-Entropic Signature of the Critical Point  

E-Print Network [OSTI]

We investigate the critical behavior of continuous phase transitions in the context of Ginzburg Landau models with a double well effective potential. In particular, we show that the recently proposed configurational entropy, a measure of spatial complexity of the order parameter based on its Fourier mode decomposition, can be used to identify the critical point. We compute the CE for different temperatures and show that large spatial fluctuations near the critical point lead to a sharp decrease in the CE. We further show that the CE density has a marked scaling behavior near criticality, with the same power law as Kolmogorov turbulence. We reproduce the behavior of the CE at criticality with a percolating many bubble model.

Sowinski, Damian

2015-01-01T23:59:59.000Z

7

The Criticality Safety Information Resource Center at Los Alamos National Laboratory  

SciTech Connect (OSTI)

The mission of the Criticality Safety Information Resource Center (CSIRC) at Los Alamos National Laboratory (LANL) is the preservation of primary documentation supporting criticality safety. In many cases, but not all, this primary documentation consists of experimentalists` logbooks. Experience has shown that the logbooks and other primary information are vulnerable to being discarded. Destruction of these logbooks results in a permanent loss to the criticality safety community.

Henderson, B.D.; Meade, R.A. [Los Alamos National Lab., NM (United States); Pruvost, N.L. [Galaxy Computer Services, Inc., Santa Fe, NM (United States)

1997-05-01T23:59:59.000Z

8

Petroleum and geothermal production technology in Russia: Summary of information obtained during informational meetings with several Russian Institutes  

SciTech Connect (OSTI)

Russian scientists and engineers have drilled the deepest holes in the world. It is recognized that this experience has given them an expertise in drilling superdeep holes, as well as other aspects of drilling, completions, and geophysics. More and more US oil and gas companies are vigorously expanding their exploration and development into Russia. It is important for them to identify and use Russian technology in drilling, completion, logging, and reservoir characterization to the extent possible, in order to both reduce drilling costs and help support the Russian economy. While these US companies are interested in becoming involved in and/or sponsoring research in Russia, they have been unsure as to which scientists and institutes are working on problems of interest. It was also important to determine in which areas Russian technology is farther advanced than in the West. Such technology could then be commercialized as part of the Industrial Partnering Program. In order to develop a clear understanding of these issues, two Sandia engineers with drilling and completions expertise and a geophysicist with expertise in reservoir analysis traveled to Russia to meet with Russian scientists and engineers to discuss their technologies and areas of interest. This report contains a summary of the information obtained during the visit.

Schafer, D.M.; Glowka, D.A.; Teufel, L.W.

1995-04-01T23:59:59.000Z

9

Experimental criticality specifications, update through 1979. Informal report  

SciTech Connect (OSTI)

A table of contents for LA-7170-MS is provided, and publications of criticality specifications that appeared in 1978 and 1979 are listed. The table was omitted from the original document. An abstract of the original report appeared in Energy Research Abstracts, Volume 3: 43410.

Paxton, H.C. (comp.)

1980-02-01T23:59:59.000Z

10

Critical care unit data integration and clinical information system  

E-Print Network [OSTI]

which was critical to be able to complete this work. He has always gone out of his ways to help me as much as possible. TABLE OF CONTENTS Page ABSTRACT. . . . 1n ACKNOWLEDGMENTS. . . . . . TABLE OF CONTENTS, . LIST OF FIGURES. LIST OF TABLES.... . CHAPTER . . . 1X I INTRODUCTION. 1. 1 Related work. . . , . 1. 2 Objective. . . . . . 1. 3 Rationale. II SYSTEM DESCRIPTION. 2. 1 System configuration. 2. 2 Software tool. . . . . . . . I 2 2. 3 Virtual Instruments. . . . . . 12 2. 4 Modular...

Doma, Uma Jagdish

1994-01-01T23:59:59.000Z

11

Idaho How to Obtain EPA ID Number Webpage | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to: navigation,Ohio:GreerHiCalifornia:ISI Solar JumpObtain EPA ID Number Webpage Jump to:

12

with Earth's Theia component; thus, it is present-ly not possible to obtain information on D17  

E-Print Network [OSTI]

with Earth's Theia component; thus, it is present- ly not possible to obtain information on D17 O of the proto-Earth. An alternative explanation for the isotope difference between Earth and the Moon is that the D17 O value of Earth was modified by late- accreting material (late veneer) after the for- mation

Napp, Nils

13

Title 50 CFR 226 Designated Critical Habitat | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revisionEnvReviewNonInvasiveExplorationUT-gTaguspark JumpDetective: Terminology andInformation and Plants

14

Reflective responsibility for risk: a critical view of software and information systems development risk  

E-Print Network [OSTI]

in moral philosophy. As a general idea of how the ethical problems of risk can be addressed, this paperReflective responsibility for risk: a critical view of software and information systems development risk management Bernd Carsten Stahl Faculty of Computer Science and Engineering, Centre for Computing

De Montfort University

15

Nanostructure of Solid Precipitates Obtained by Expansion of Polystyrene-block-Polybutadiene Solutions in Near Critical Propane: Block Ratio and Micellar Solution Effects  

SciTech Connect (OSTI)

In contrast to incompressible liquid solutions, compressible near-critical solutions of block copolymers allow for controlling rapid structure transformations with pressure alone. For example, when dissolved in near-critical propane, polystyrene-block-polybutadiene can form a random molecular solution at high pressures, a micellar solution at moderate pressures, and a solvent-free precipitate at low pressures. In contrast to the unstructured virgin copolymer, such a propane-treated precipitate rapidly self-assembles toward structures characteristic of equilibrated block copolymers, such as lamellae, spheres, or cylinders, which depend on the block ratio rather than on the decompression rate or temperature, at least within the rate and temperature ranges investigated in this work. At lower temperatures, however, say below 40 C, glass transition of the styrene-butadiene diblocks can inhibit independent structure formation, while crystallization of their hydrogenated-butadiene analogues can preserve the micellar-solution structure.

Green, Jade [University of Wyoming, Laramie; Tyrrell, Zachary [University of Wyoming, Laramie; Radosz, Maciej [University of Wyoming, Laramie; Hong, Kunlun [ORNL; Mays, Jimmy [ORNL

2011-01-01T23:59:59.000Z

16

U-006:Cisco Network Admission Control Manager Directory Traversal Flaw Lets Remote Users Obtain Potentially Sensitive Information  

Broader source: Energy.gov [DOE]

An unauthenticated attacker could exploit this vulnerability to access sensitive information, including password files and system logs, that could be leveraged to launch subsequent attacks.

17

Universal behavior of the Shannon and Rényi mutual information of quantum critical chains  

E-Print Network [OSTI]

We study the Shannon and R\\'enyi mutual information (MI) in the ground state (GS) of different critical quantum spin chains. Despite the apparent basis dependence of these quantities we show the existence of some particular basis (we will call them conformal basis) whose finite-size scaling function is related to the central charge $c$ of the underlying conformal field theory of the model. In particular, we verified that for large index $n$, the MI of a subsystem of size $\\ell$ in a periodic chain with $L$ sites behaves as $\\frac{c}{4}\\frac{n}{n-1}\\ln\\Big{(}\\frac{L}{\\pi}\\sin(\\frac{\\pi \\ell}{L})\\Big{)}$, when the ground-state wavefunction is expressed in these special conformal basis. This is in agreement with recent predictions. For generic local basis we will show that, although in some cases $b_n\\ln\\Big{(}\\frac{L}{\\pi}\\sin(\\frac{\\pi \\ell}{L})\\Big{)}$ is a good fit to our numerical data, in general there is no direct relation between $b_n$ and the central charge of the system. We will support our findings with detailed numerical calculations for the transverse field Ising model, $Q=3,4$ quantum Potts chain, quantum Ashkin-Teller chain and the XXZ quantum chain. We will also present some additional results of the Shannon mutual information ($n=1$), for the parafermionic $Z_Q$ quantum chains with $Q=5,6,7$ and $8$.

F. C. Alcaraz; M. A. Rajabpour

2014-08-11T23:59:59.000Z

18

FULL-SCALE, WIND TUNNEL AND CFD WIND ENGINEERING STUDIES A variety of methods can be used to obtain wind engineering design information. These include  

E-Print Network [OSTI]

FULL-SCALE, WIND TUNNEL AND CFD WIND ENGINEERING STUDIES A variety of methods can be used to obtain wind engineering design information. These include codes of practice, full-scale, wind tunnel are listed in the table below: Table 1. Relative advantages and disadvantages of wind engineering techniques

Savory, Eric

19

Modeling mining economics and materials markets to inform criticality assessment and mitigation  

E-Print Network [OSTI]

Conventional criticality-assessment methods drawn from the existing literature are often limited to evaluations of scarcity risks, or rely on price as an indicator of criticality. Such approaches, however, are ill-suited ...

Poulizac, Claire Marie Franc?oise

2013-01-01T23:59:59.000Z

20

Information percolation for the Ising model: cutoff in three dimensions up to criticality  

E-Print Network [OSTI]

We introduce a new framework for analyzing Glauber dynamics for the Ising model. The traditional approach for obtaining sharp mixing results has been to appeal to estimates on spatial properties of the stationary measure from within a multi-scale analysis of the dynamics. Here we propose to study these simultaneously by examining "information percolation" clusters in the space-time slab. Using this framework, we obtain new results for the Ising model on $(\\mathbb{Z}/n\\mathbb{Z})^d$ throughout the high temperature regime: total-variation mixing exhibits cutoff with an $O(1)$-window around the time at which the magnetization is the square-root of the volume. (Previously, cutoff in the full high temperature regime was only known for $d\\leq 2$, and only with an $O(\\log\\log n)$-window.) Furthermore, the new framework opens the door to understanding the effect of the initial state on the mixing time. We demonstrate this on the 1D Ising model, showing that starting from the uniform ("disordered") initial distribution asymptotically halves the mixing time, whereas almost every deterministic starting state is asymptotically as bad as starting from the ("ordered") all-plus state.

Eyal Lubetzky; Allan Sly

2014-07-08T23:59:59.000Z

Note: This page contains sample records for the topic "obtain information critical" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Nuclear criticality safety guide  

SciTech Connect (OSTI)

This technical reference document cites information related to nuclear criticality safety principles, experience, and practice. The document also provides general guidance for criticality safety personnel and regulators.

Pruvost, N.L.; Paxton, H.C. [eds.] [eds.

1996-09-01T23:59:59.000Z

22

Toward an ontology framework supporting the integration of geographic information with modeling and simulation for critical infrastructure protection  

SciTech Connect (OSTI)

Protecting the nation's infrastructure from natural disasters, inadvertent failures, or intentional attacks is a major national security concern. Gauging the fragility of infrastructure assets, and understanding how interdependencies across critical infrastructures affect their behavior, is essential to predicting and mitigating cascading failures, as well as to planning for response and recovery. Modeling and simulation (M&S) is an indispensable part of characterizing this complex system of systems and anticipating its response to disruptions. Bringing together the necessary components to perform such analyses produces a wide-ranging and coarse-grained computational workflow that must be integrated with other analysis workflow elements. There are many points in both types of work flows in which geographic information (GI) services are required. The GIS community recognizes the essential contribution of GI in this problem domain as evidenced by past OGC initiatives. Typically such initiatives focus on the broader aspects of GI analysis workflows, leaving concepts crucial to integrating simulations within analysis workflows to that community. Our experience with large-scale modeling of interdependent critical infrastructures, and our recent participation in a DRS initiative concerning interoperability for this M&S domain, has led to high-level ontological concepts that we have begun to assemble into an architecture that spans both computational and 'world' views of the problem, and further recognizes the special requirements of simulations that go beyond common workflow ontologies. In this paper we present these ideas, and offer a high-level ontological framework that includes key geospatial concepts as special cases of a broader view.

Ambrosiano, John J [Los Alamos National Laboratory; Bent, Russell W [Los Alamos National Laboratory; Linger, Steve P [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

23

Critical Materials Workshop  

Broader source: Energy.gov [DOE]

AMO hosted a public workshop on Tuesday, April 3, 2012 in Arlington, VA to provide background information on critical materials assessment, the current research within DOE related to critical...

24

Reference handbook: Nuclear criticality  

SciTech Connect (OSTI)

The purpose for this handbook is to provide Rocky Flats personnel with the information necessary to understand the basic principles underlying a nuclear criticality.

Not Available

1991-12-06T23:59:59.000Z

25

Improving the Availability and Delivery of Critical Information for Tight Gas Resource Development in the Appalachian Basin  

SciTech Connect (OSTI)

To encourage, facilitate and accelerate the development of tight gas reservoirs in the Appalachian basin, the geological surveys in Pennsylvania and West Virginia collected widely dispersed data on five gas plays and formatted these data into a large database that can be accessed by individual well or by play. The database and delivery system that were developed can be applied to any of the 30 gas plays that have been defined in the basin, but for this project, data compilation was restricted to the following: the Mississippian-Devonian Berea/Murrysville sandstone play and the Upper Devonian Venango, Bradford and Elk sandstone plays in Pennsylvania and West Virginia; and the 'Clinton'/Medina sandstone play in northwestern Pennsylvania. In addition, some data were collected on the Tuscarora Sandstone play in West Virginia, which is the lateral equivalent of the Medina Sandstone in Pennsylvania. Modern geophysical logs are the most common and cost-effective tools for evaluating reservoirs. Therefore, all of the well logs in the libraries of the two surveys from wells that had penetrated the key plays were scanned, generating nearly 75,000 scanned e-log files from more than 40,000 wells. A standard file-naming convention for scanned logs was developed, which includes the well API number, log curve type(s) scanned, and the availability of log analyses or half-scale logs. In addition to well logs, other types of documents were scanned, including core data (descriptions, analyses, porosity-permeability cross-plots), figures from relevant chapters of the Atlas of Major Appalachian Gas Plays, selected figures from survey publications, and information from unpublished reports and student theses and dissertations. Monthly and annual production data from 1979 to 2007 for West Virginia wells in these plays are available as well. The final database also includes digitized logs from more than 800 wells, sample descriptions from more than 550 wells, more than 600 digital photos in 1-foot intervals from 11 cores, and approximately 260 references for these plays. A primary objective of the research was to make data and information available free to producers through an on-line data delivery model designed for public access on the Internet. The web-based application that was developed utilizes ESRI's ArcIMS GIS software to deliver both well-based and play-based data that are searchable through user-originated queries, and allows interactive regional geographic and geologic mapping that is play-based. System tools help users develop their customized spatial queries. A link also has been provided to the West Virginia Geological Survey's 'pipeline' system for accessing all available well-specific data for more than 140,000 wells in West Virginia. However, only well-specific queries by API number are permitted at this time. The comprehensive project web site (http://www.wvgs.wvnet.edu/atg) resides on West Virginia Geological Survey's servers and links are provided from the Pennsylvania Geological Survey and Appalachian Oil and Natural Gas Research Consortium web sites.

Mary Behling; Susan Pool; Douglas Patchen; John Harper

2008-12-31T23:59:59.000Z

26

Critical Materials:  

Broader source: Energy.gov (indexed) [DOE]

lighting. 14 (bottom) Criticality ratings of shortlisted raw 76 materials. 15 77 2. Technology Assessment and Potential 78 This section reviews the major trends within...

27

Criticality Model  

SciTech Connect (OSTI)

The ''Disposal Criticality Analysis Methodology Topical Report'' (YMP 2003) presents the methodology for evaluating potential criticality situations in the monitored geologic repository. As stated in the referenced Topical Report, the detailed methodology for performing the disposal criticality analyses will be documented in model reports. Many of the models developed in support of the Topical Report differ from the definition of models as given in the Office of Civilian Radioactive Waste Management procedure AP-SIII.10Q, ''Models'', in that they are procedural, rather than mathematical. These model reports document the detailed methodology necessary to implement the approach presented in the Disposal Criticality Analysis Methodology Topical Report and provide calculations utilizing the methodology. Thus, the governing procedure for this type of report is AP-3.12Q, ''Design Calculations and Analyses''. The ''Criticality Model'' is of this latter type, providing a process evaluating the criticality potential of in-package and external configurations. The purpose of this analysis is to layout the process for calculating the criticality potential for various in-package and external configurations and to calculate lower-bound tolerance limit (LBTL) values and determine range of applicability (ROA) parameters. The LBTL calculations and the ROA determinations are performed using selected benchmark experiments that are applicable to various waste forms and various in-package and external configurations. The waste forms considered in this calculation are pressurized water reactor (PWR), boiling water reactor (BWR), Fast Flux Test Facility (FFTF), Training Research Isotope General Atomic (TRIGA), Enrico Fermi, Shippingport pressurized water reactor, Shippingport light water breeder reactor (LWBR), N-Reactor, Melt and Dilute, and Fort Saint Vrain Reactor spent nuclear fuel (SNF). The scope of this analysis is to document the criticality computational method. The criticality computational method will be used for evaluating the criticality potential of configurations of fissionable materials (in-package and external to the waste package) within the repository at Yucca Mountain, Nevada for all waste packages/waste forms. The criticality computational method is also applicable to preclosure configurations. The criticality computational method is a component of the methodology presented in ''Disposal Criticality Analysis Methodology Topical Report'' (YMP 2003). How the criticality computational method fits in the overall disposal criticality analysis methodology is illustrated in Figure 1 (YMP 2003, Figure 3). This calculation will not provide direct input to the total system performance assessment for license application. It is to be used as necessary to determine the criticality potential of configuration classes as determined by the configuration probability analysis of the configuration generator model (BSC 2003a).

A. Alsaed

2004-09-14T23:59:59.000Z

28

Only critical information was scanned  

Office of Legacy Management (LM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarlyEnergyDepartment ofDepartment ofof EnergyYou$0.C. 20545*.MSE Cores" _August 4, 1992DOC F

29

Only critical information was scanned  

Office of Legacy Management (LM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarlyEnergyDepartment ofDepartment ofof EnergyYou$0.C. 20545*.MSE Cores" _August 4, 1992DOC F

30

The Critical Materials Institute | Critical Materials Institute  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest RegionatSearchScheduled System Burst BufferFluoriteSedimentsThe Critical

31

antiferromagnetic quantum critical: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

quasiparticles are strongly coupled and acquire spectral functions with a common dynamic critical exponent. We obtain results for critical exponents and for the variation in...

32

Indiana University Cognitive & Information Sciences  

E-Print Network [OSTI]

sheet for ideas and information.) Develop a resume or revise your current resume; Get assistance in creating a resume or obtain constructive criticism on your current resume. Using a variety of resources to provide the type of internship experience you are seeking. Send resumes and cover letters

Indiana University

33

E-Print Network 3.0 - association networks obtained Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Sample search results for: association networks obtained Page: << < 1 2 3 4 5 > >> 1 Ad Hoc Networking Critical Features and Performance Metrics Madhavi W. Subbarao Summary:...

34

Critically damped quantum search  

E-Print Network [OSTI]

Although measurement and unitary processes can accomplish any quantum evolution in principle, thinking in terms of dissipation and damping can be powerful. We propose a modification of Grover's algorithm in which the idea of damping plays a natural role. Remarkably, we have found that there is a critical damping value that divides between the quantum $O(\\sqrt{N})$ and classical O(N) search regimes. In addition, by allowing the damping to vary in a fashion we describe, one obtains a fixed-point quantum search algorithm in which ignorance of the number of targets increases the number of oracle queries only by a factor of 1.5.

Ari Mizel

2008-10-02T23:59:59.000Z

35

CRITICALITY SAFETY TRAINING AT FLUOR HANFORD (FH)  

SciTech Connect (OSTI)

The Fluor Hanford Criticality Safety engineers are extensively trained. The objectives and requirements for training are derived from Department of Energy (DOE) and American National Standards Institute/American Nuclear Society Standards (ANSI/ANS), and are captured in the Hanford Criticality Safety Program manual, HNF-7098. Qualification cards have been established for the general Criticality Safety Engineer (CSE) analyst, CSEs who support specific facilities, and for the facility Criticality Safety Representatives (CSRs). Refresher training and continuous education in the discipline are emphasized. Weekly Brown Bag Sessions keep the criticality safety engineers informed of the latest developments and historic perspectives.

TOFFER, H.

2005-05-02T23:59:59.000Z

36

U-163: PHP Command Parameter Bug Lets Remote Users Obtain Potentially...  

Broader source: Energy.gov (indexed) [DOE]

63: PHP Command Parameter Bug Lets Remote Users Obtain Potentially Sensitive Information and Execute Arbitrary Code U-163: PHP Command Parameter Bug Lets Remote Users Obtain...

37

Critical Materials Institute  

ScienceCinema (OSTI)

Ames Laboratory Director Alex King talks about the goals of the Critical Materials Institute in diversifying the supply of critical materials, developing substitute materials, developing tools and techniques for recycling critical materials, and forecasting materials needs to avoid future shortages.

Alex King

2013-06-05T23:59:59.000Z

38

Anomalous critical fields in quantum critical superconductors  

E-Print Network [OSTI]

-temperature superconductivity. However, the exact mechanism by which this occurs remains poorly understood. The iron-pnictide superconductor BaFe2(As1?xPx)2 is perhaps the clearest example to date of a high temperature quantum critical superconductor, and so it is a... mixing of antiferromagnetism and superconductivity, suggesting that a highly unusual vortex state is realised in quantum critical superconductors. Quantum critical points (QCPs) can be associated with a variety of different order-disorder phenomena...

Putzke, C.; Walmsley, P.; Fletcher, J.D.; Malone, L.; Vignolles, D.; Proust, C.; Badoux, S.; See, P.; Beere, H.E.; Ritchie, D.A.; Kasahara, S.; Mizukami, Y.; Shibauchi, T.; Matsuda, Y.; Carrington, A.

2015-01-01T23:59:59.000Z

39

PRECLOSURE CRITICALITY ANALYSIS PROCESS REPORT  

SciTech Connect (OSTI)

This report describes a process for performing preclosure criticality analyses for a repository at Yucca Mountain, Nevada. These analyses will be performed from the time of receipt of fissile material until permanent closure of the repository (preclosure period). The process describes how criticality safety analyses will be performed for various configurations of waste in or out of waste packages that could occur during preclosure as a result of normal operations or event sequences. The criticality safety analysis considers those event sequences resulting in unanticipated moderation, loss of neutron absorber, geometric changes, or administrative errors in waste form placement (loading) of the waste package. The report proposes a criticality analyses process for preclosure to allow a consistent transition from preclosure to postclosure, thereby possibly reducing potential cost increases and delays in licensing of Yucca Mountain. The proposed approach provides the advantage of using a parallel regulatory framework for evaluation of preclosure and postclosure performance and is consistent with the U.S. Nuclear Regulatory Commission's approach of supporting risk-informed, performance-based regulation for fuel cycle facilities, ''Yucca Mountain Review Plan, Final Report'', and 10 CFR Part 63. The criticality-related criteria for ensuring subcriticality are also described as well as which guidance documents will be utilized. Preclosure operations and facilities have significant similarities to existing facilities and operations currently regulated by the U.S. Nuclear Regulatory Commission; therefore, the design approach for preclosure criticality safety will be dictated by existing regulatory requirements while using a risk-informed approach with burnup credit for in-package operations.

A.E. Danise

2004-10-25T23:59:59.000Z

40

The Zeus Copper/Uranium Critical Experiment at NCERC  

SciTech Connect (OSTI)

A critical experiment was performed to provide nuclear data in a non-thermal neutron spectrum and to reestablish experimental capability relevant to Stockpile Stewardship and Technical Nuclear Forensic programs. Irradiation foils were placed at specific locations in the Zeus all oralloy critical experiment to obtain fission ratios. These ratios were compared with others from other critical assemblies to assess the degree of softness in the neutron spectrum. This critical experiment was performed at the National Criticality Experiments Research Center (NCERC) in Nevada.

Sanchez, Rene G. [Los Alamos National Laboratory; Hayes, David K. [Los Alamos National Laboratory; Bounds, John Alan [Los Alamos National Laboratory; Jackman, Kevin R. [Los Alamos National Laboratory; Goda, Joetta M. [Los Alamos National Laboratory

2012-06-15T23:59:59.000Z

Note: This page contains sample records for the topic "obtain information critical" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Terra-Gen Powers Coso Geothermal Facility Obtains Critical Federal Permit  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revisionEnvReviewNonInvasiveExplorationUT-gTaguspark Jump to: navigation,TelluricTODO:Tennessee 2REDDto Increase

42

Obtaining and Using USDA Market and Production Reports  

E-Print Network [OSTI]

Obtaining and Using USDA Market and Production Reports Risk Management E-490 RM2-11.0 09-08 *Professors and Extension Economists?Management, The Texas A&M System. It has been said that ?accurate and timely in- formation is the lubricant... organizations. Public information is commonly available from the United States Department of Agriculture (USDA) and land grant universities. USDA is responsible for collecting and reporting to the public a vast array of information on virtually every...

Bevers, Stan; Amosson, Stephen H.; Smith, Jackie; O'Brien, Daniel

2008-10-07T23:59:59.000Z

43

Nuclear Multifragmentation Critical Exponents  

E-Print Network [OSTI]

We show that the critical exponents of nuclear multi-fragmentation have not been determined conclusively yet.

Wolfgang Bauer; William Friedman

1994-11-14T23:59:59.000Z

44

Critical technologies research: Opportunities for DOE  

SciTech Connect (OSTI)

Recent studies have identified a number of critical technologies that are essential to the nation`s defense, economic competitiveness, energy independence, and betterment of public health. The National Critical Technologies Panel (NCTP) has identified the following critical technology areas: Aeronautics and Surface Transportation; Biotechnology and Life Sciences; Energy and Environment; Information and Communications; Manufacturing; and Materials. Sponsored by the Department of Energy`s Office of Energy Research (OER), the Critical Technologies Research Workshop was held in May 1992. Approximately 100 scientists, engineers, and managers from the national laboratories, industry, academia, and govemment participated. The objective of the Berkeley Workshop was to advance the role of the DOE multiprogram energy laboratories in critical technologies research by describing, defining, and illustrating research areas, opportunities, resources, and key decisions necessary to achieve national research goals. An agenda was developed that looked at DOE`s capabilities and options for research in critical technologies and provided a forum for industry, academia, govemment, and the national laboratories to address: Critical technology research needs; existing research activities and resources; capabilities of the national laboratories; and opportunities for national laboratories, industries, and universities. The Workshop included plenary sessions in which presentations by technology and policy leaders set the context for further inquiry into critical technology issues and research opportunities. Separate sessions then focused on each of the following major areas of technology: Advanced materials; biotechnology and life sciences; energy and environment; information and communication; and manufacturing and transportation.

Not Available

1992-12-01T23:59:59.000Z

45

Critical technologies research: Opportunities for DOE  

SciTech Connect (OSTI)

Recent studies have identified a number of critical technologies that are essential to the nation's defense, economic competitiveness, energy independence, and betterment of public health. The National Critical Technologies Panel (NCTP) has identified the following critical technology areas: Aeronautics and Surface Transportation; Biotechnology and Life Sciences; Energy and Environment; Information and Communications; Manufacturing; and Materials. Sponsored by the Department of Energy's Office of Energy Research (OER), the Critical Technologies Research Workshop was held in May 1992. Approximately 100 scientists, engineers, and managers from the national laboratories, industry, academia, and govemment participated. The objective of the Berkeley Workshop was to advance the role of the DOE multiprogram energy laboratories in critical technologies research by describing, defining, and illustrating research areas, opportunities, resources, and key decisions necessary to achieve national research goals. An agenda was developed that looked at DOE's capabilities and options for research in critical technologies and provided a forum for industry, academia, govemment, and the national laboratories to address: Critical technology research needs; existing research activities and resources; capabilities of the national laboratories; and opportunities for national laboratories, industries, and universities. The Workshop included plenary sessions in which presentations by technology and policy leaders set the context for further inquiry into critical technology issues and research opportunities. Separate sessions then focused on each of the following major areas of technology: Advanced materials; biotechnology and life sciences; energy and environment; information and communication; and manufacturing and transportation.

Not Available

1992-12-01T23:59:59.000Z

46

2011 Annual Criticality Safety Program Performance Summary  

SciTech Connect (OSTI)

The 2011 review of the INL Criticality Safety Program has determined that the program is robust and effective. The review was prepared for, and fulfills Contract Data Requirements List (CDRL) item H.20, 'Annual Criticality Safety Program performance summary that includes the status of assessments, issues, corrective actions, infractions, requirements management, training, and programmatic support.' This performance summary addresses the status of these important elements of the INL Criticality Safety Program. Assessments - Assessments in 2011 were planned and scheduled. The scheduled assessments included a Criticality Safety Program Effectiveness Review, Criticality Control Area Inspections, a Protection of Controlled Unclassified Information Inspection, an Assessment of Criticality Safety SQA, and this management assessment of the Criticality Safety Program. All of the assessments were completed with the exception of the 'Effectiveness Review' for SSPSF, which was delayed due to emerging work. Although minor issues were identified in the assessments, no issues or combination of issues indicated that the INL Criticality Safety Program was ineffective. The identification of issues demonstrates the importance of an assessment program to the overall health and effectiveness of the INL Criticality Safety Program. Issues and Corrective Actions - There are relatively few criticality safety related issues in the Laboratory ICAMS system. Most were identified by Criticality Safety Program assessments. No issues indicate ineffectiveness in the INL Criticality Safety Program. All of the issues are being worked and there are no imminent criticality concerns. Infractions - There was one criticality safety related violation in 2011. On January 18, 2011, it was discovered that a fuel plate bundle in the Nuclear Materials Inspection and Storage (NMIS) facility exceeded the fissionable mass limit, resulting in a technical safety requirement (TSR) violation. The TSR limits fuel plate bundles to 1085 grams U-235, which is the maximum loading of an ATR fuel element. The overloaded fuel plate bundle contained 1097 grams U-235 and was assembled under an 1100 gram U-235 limit in 1982. In 2003, the limit was reduced to 1085 grams citing a new criticality safety evaluation for ATR fuel elements. The fuel plate bundle inventories were not checked for compliance prior to implementing the reduced limit. A subsequent review of the NMIS inventory did not identify further violations. Requirements Management - The INL Criticality Safety program is organized and well documented. The source requirements for the INL Criticality Safety Program are from 10 CFR 830.204, DOE Order 420.1B, Chapter III, 'Nuclear Criticality Safety,' ANSI/ANS 8-series Industry Standards, and DOE Standards. These source requirements are documented in LRD-18001, 'INL Criticality Safety Program Requirements Manual.' The majority of the criticality safety source requirements are contained in DOE Order 420.1B because it invokes all of the ANSI/ANS 8-Series Standards. DOE Order 420.1B also invokes several DOE Standards, including DOE-STD-3007, 'Guidelines for Preparing Criticality Safety Evaluations at Department of Energy Non-Reactor Nuclear Facilities.' DOE Order 420.1B contains requirements for DOE 'Heads of Field Elements' to approve the criticality safety program and specific elements of the program, namely, the qualification of criticality staff and the method for preparing criticality safety evaluations. This was accomplished by the approval of SAR-400, 'INL Standardized Nuclear Safety Basis Manual,' Chapter 6, 'Prevention of Inadvertent Criticality.' Chapter 6 of SAR-400 contains sufficient detail and/or reference to the specific DOE and contractor documents that adequately describe the INL Criticality Safety Program per the elements specified in DOE Order 420.1B. The Safety Evaluation Report for SAR-400 specifically recognizes that the approval of SAR-400 approves the INL Criticality Safety Program. No new source requirements were released in 2011. A revision to LRD-18001 is

Andrea Hoffman

2011-12-01T23:59:59.000Z

47

Criticality Safety Basics for INL Emergency Responders  

SciTech Connect (OSTI)

This document is a modular self-study guide about criticality safety principles for Idaho National Laboratory emergency responders. This guide provides basic criticality safety information for people who, in response to an emergency, might enter an area that contains much fissionable (or fissile) material. The information should help responders understand unique factors that might be important in responding to a criticality accident or in preventing a criticality accident while responding to a different emergency.

This study guide specifically supplements web-based training for firefighters (0INL1226) and includes information for other Idaho National Laboratory first responders. However, the guide audience also includes other first responders such as radiological control personnel.

For interested readers, this guide includes clearly marked additional information that will not be included on tests. The additional information includes historical examples (Been there. Done that.), as well as facts and more in-depth information (Did you know …).

INL criticality safety personnel revise this guide as needed to reflect program changes, user requests, and better information. Revision 0, issued May 2007, established the basic text. Revision 1 incorporates operation, program, and training changes implemented since 2007. Revision 1 increases focus on first responders because later responders are more likely to have more assistance and guidance from facility personnel and subject matter experts. Revision 1 also completely reorganized the training to better emphasize physical concepts behind the criticality controls that help keep emergency responders safe. The changes are based on and consistent with changes made to course 0INL1226.

Valerie L. Putman

2012-08-01T23:59:59.000Z

48

Critical Materials Institute List of Projects | Critical Materials  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to User GroupInformationE-GovNaturalInstitute Critical Materials

49

Critical frequency in nuclear chiral rotation  

E-Print Network [OSTI]

Within the cranked Skyrme-Hartree-Fock approach the self-consistent solutions have been obtained for planar and chiral rotational bands in 132La. It turns out that the chiral band cannot exist below some critical rotational frequency which in the present case equals omega=0.6MeV. The appearance of the critical frequency is explained in terms of a simple classical model of two gyroscopes coupled to a triaxial rigid body.

P. Olbratowski; J. Dobaczewski; J. Dudek

2002-11-25T23:59:59.000Z

50

Information Security  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

The protection and control of classified information is critical to our nation’s security. This Order establishes requirements and responsibilities for Department of Energy (DOE) Departmental Elements, including the National Nuclear Security Administration (NNSA), to protect and control classified information as required by statutes, regulation, Executive Orders, government-wide policy directives and guidelines, and DOE policy and directives. Cancels DOE M 470.4-4A Chg except for Section D.

2011-06-20T23:59:59.000Z

51

U-017: HP MFP Digital Sending Software Lets Local Users Obtain...  

Broader source: Energy.gov (indexed) [DOE]

TRACETRACK Support Lets Remote Users Obtain Potentially Sensitive Information V-002: EMC NetWorker Module for Microsoft Applications Lets Remote Users Execute Arbitrary Code...

52

Treatment of biomass to obtain ethanol  

DOE Patents [OSTI]

Ethanol was produced using biocatalysts that are able to ferment sugars derived from treated biomass. Sugars were obtained by pretreating biomass under conditions of high solids and low ammonia concentration, followed by saccharification.

Dunson, Jr., James B. (Newark, DE); Elander, Richard T. (Evergreen, CO); Tucker, III, Melvin P. (Lakewood, CO); Hennessey, Susan Marie (Avondale, PA)

2011-08-16T23:59:59.000Z

53

Tank farms criticality safety manual  

SciTech Connect (OSTI)

This document defines the Tank Farms Contractor (TFC) criticality safety program, as required by Title 10 Code of Federal Regulations (CFR), Subpart 830.204(b)(6), ''Documented Safety Analysis'' (10 CFR 830.204 (b)(6)), and US Department of Energy (DOE) 0 420.1A, Facility Safety, Section 4.3, ''Criticality Safety.'' In addition, this document contains certain best management practices, adopted by TFC management based on successful Hanford Site facility practices. Requirements in this manual are based on the contractor requirements document (CRD) found in Attachment 2 of DOE 0 420.1A, Section 4.3, ''Nuclear Criticality Safety,'' and the cited revisions of applicable standards published jointly by the American National Standards Institute (ANSI) and the American Nuclear Society (ANS) as listed in Appendix A. As an informational device, requirements directly imposed by the CRD or ANSI/ANS Standards are shown in boldface. Requirements developed as best management practices through experience and maintained consistent with Hanford Site practice are shown in italics. Recommendations and explanatory material are provided in plain type.

FORT, L.A.

2003-03-27T23:59:59.000Z

54

Critical Materials Hub  

Broader source: Energy.gov [DOE]

Critical materials, including some rare earth elements that possess unique magnetic, catalytic, and luminescent properties, are key resources needed to manufacture products for the clean energy economy. These materials are so critical to the technologies that enable wind turbines, solar panels, electric vehicles, and energy-efficient lighting that DOE's 2010 and 2011 Critical Materials Strategy reported that supply challenges for five rare earth metals—dysprosium, neodymium, terbium, europium, and yttrium—could affect clean energy technology deployment in the coming years.1, 2

55

CRITICAL MATERIALS INSTITUTE PROJECTS  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

INL Recovery of Critical Materials from Consumer Devices 3 3-2 3.2.6 McCall, Scott LLNL Additive Manufacturing of Permanent Magnets 2 2-1 2.1.2 McGuire, Michael ORNL...

56

CRITICAL MATERIALS INSTITUTE PROJECTS  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

INL National Technology Roadmap for Critical Materials 4 4-3 4.3.3 McCall, Scott LLNL Additive Manufacturing of Permanent Magnets 2 2-1 2.1.2 Payne, Steve LLNL New Efficient...

57

About Critical Materials | Critical Materials Institute  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation InInformationCenterResearch Highlights MediaFuel Production ASU isAbout CAMDAbout

58

Intrusion-Tolerant Protection for Critical Infrastructures  

E-Print Network [OSTI]

of an organization in the face of accidents and attacks. How- ever, they are not simple firewalls but distributed]. In recent years these systems evolved in several aspects that greatly increased their exposure to cyber-attacks, a critical information infrastructure is formed by facilities, like power transformation substations or cor

Neves, Nuno

59

Fast Reactor Spent Fuel Processing: Experience and Criticality Safety  

SciTech Connect (OSTI)

This paper discusses operational and criticality safety experience associated with the Idaho National Laboratory Fuel Conditioning Facility which uses a pyrometallurgical process to treat spent fast reactor metallic fuel. The process is conducted in an inert atmosphere hot cell. The process starts with chopping metallic fuel elements into a basket. The basket is lowered into molten salt (LiCl-KCl) along with a steel mandrel. Active metal fission products, transuranic metals and sodium metal in the spent fuel undergo chemical oxidation and form chlorides. Voltage is applied between the basket, which serves as an anode, and the mandrel, which serves as a cathode, causing metallic uranium in the spent fuel to undergo electro-chemical oxidation thereby forming uranium chloride. Simultaneously at the cathode, uranium chloride undergoes electro-chemical reduction and deposits uranium metal onto the mandrel. The uranium metal and accompanying entrained salt are placed in a distillation furnace where the uranium melts forming an ingot and the entrained salt boils and subsequently condenses in a separate crucible. The uranium ingots are placed in long term storage. During the ten year operating history, over one hundred criticality safety evaluations were prepared. All criticality safety related limits and controls for the entire process are contained in a single document which required over thirty revisions to accommodate the process changes. Operational implementation of the limits and controls includes use of a near real-time computerized tracking system. The tracking system uses an Oracle database coupled with numerous software applications. The computerized tracking system includes direct fuel handler interaction with every movement of material. Improvements to this system during the ten year history include introduction of web based operator interaction, tracking of moderator materials and the development of a plethora database queries to assist in day to day operations as well as obtaining historical information. Over 12,000 driver fuel elements have been processed resulting in the production of 2500 kg of 20% enriched uranium. Also, over one thousand blanket fuel elements have been processed resulting in the production of 2400 kg of depleted uranium. These operations required over 35,000 fissile material transfers between zones and over 6000 transfers between containers. Throughout all of these movements, no mass limit violations occurred. Numerous lessons were learned over the ten year operating history. From a criticality safety perspective, the most important lesson learned was the involvement of a criticality safety practitioner in daily operations. A criticality safety engineer was assigned directly to facility operations, and was responsible for implementation of limits and controls including upkeep of the associated computerized tracking files. The criticality safety engineer was also responsible for conducting fuel handler training activities including serving on fuel handler qualification oral boards, and continually assessing operations from a criticality control perspective. The criticality safety engineer also attended bimonthly project planning meetings to identify upcoming process changes that would require criticality safety evaluation. Finally, the excellent criticality safety record was due in no small part to the continual support, involvement, trust, and confidence of project and operations mana

Chad Pope

2007-05-01T23:59:59.000Z

60

Obtaining Disaster Assistance for Public Infrastructure  

E-Print Network [OSTI]

?s Divi- sion of Emergency Management. FEMA will communicate with local governments about the process of ap- plying under its Public Assistance Program. The information also is found on the FEMA Web site http://www.fema.gov/rrr/pa/. Eligible applicants... Public Assistance pro- gram, the FEMA Hazard Mitigation Grant Program (HMGP), and other aid programs. USDA Rural Development assistance for water infrastructure may be available through Emer- gency Community Water Assistance Grants. http://www.usda.gov...

Taylor, Greg

2005-10-10T23:59:59.000Z

Note: This page contains sample records for the topic "obtain information critical" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Critical Materials Strategy Summary  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergy Cooperation |South42.2Consolidated Edison UraniumCredit-Based Interest RateCriticalCritical

62

Geometric Critical Exponents in Classical and Quantum Phase Transitions  

E-Print Network [OSTI]

We define geometric critical exponents for systems that undergo continuous second order classical and quantum phase transitions. These relate scalar quantities on the information theoretic parameter manifolds of such systems, near criticality. We calculate these exponents by approximating the metric and thereby solving geodesic equations analytically, near curvature singularities of two dimensional parameter manifolds. The critical exponents are seen to be the same for both classical and quantum systems that we consider, and we provide evidence about the possible universality of our results.

Prashant Kumar; Tapobrata Sarkar

2014-11-02T23:59:59.000Z

63

How to obtain the National Energy Modeling System (NEMS)  

Reports and Publications (EIA)

The National Energy Modeling System (NEMS) NEMS is used by the modelers at the U. S. Energy Information Administration (EIA) who understand its structure and programming. NEMS has only been used by a few organizations outside of the EIA, because most people that requested NEMS found out that it was too difficult or rigid to use. NEMS is not typically used for state-level analysis and is poorly suited for application to other countries. However, many do obtain the model simply to use the data in its input files or to examine the source code.

2013-01-01T23:59:59.000Z

64

Information Security  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

The protection and control of classified information is critical to our nation’s security. This Order establishes requirements and responsibilities for Department of Energy (DOE) Departmental Elements, including the National Nuclear Security Administration (NNSA), to protect and control classified information as required by statutes, regulation, Executive Orders, government-wide policy directives and guidelines, and DOE policy and directives. Cancels DOE M 470.4-4A Chg except for Section D. Admin Chg 1, dated 11-23-2012, cancels DOE O 471.6.

2011-06-20T23:59:59.000Z

65

Criticality experiments with fast flux test facility fuel pins  

SciTech Connect (OSTI)

A United States Department of Energy program was initiated during the early seventies at the Hanford Critical Mass Laboratory to obtain experimental criticality data in support of the Liquid Metal Fast Breeder Reactor Program. The criticality experiments program was to provide basic physics data for clean well defined conditions expected to be encountered in the handling of plutonium-uranium fuel mixtures outside reactors. One task of this criticality experiments program was concerned with obtaining data on PuO{sub 2}-UO{sub 2} fuel rods containing 20--30 wt % plutonium. To obtain this data a series of experiments were performed over a period of about twelve years. The experimental data obtained during this time are summarized and the associated experimental assemblies are described. 8 refs., 7 figs.

Bierman, S.R.

1990-11-01T23:59:59.000Z

66

Covariance matrices for use in criticality safety predictability studies  

SciTech Connect (OSTI)

Criticality predictability applications require as input the best available information on fissile and other nuclides. In recent years important work has been performed in the analysis of neutron transmission and cross-section data for fissile nuclei in the resonance region by using the computer code SAMMY. The code uses Bayes method (a form of generalized least squares) for sequential analyses of several sets of experimental data. Values for Reich-Moore resonance parameters, their covariances, and the derivatives with respect to the adjusted parameters (data sensitivities) are obtained. In general, the parameter file contains several thousand values and the dimension of the covariance matrices is correspondingly large. These matrices are not reported in the current evaluated data files due to their large dimensions and to the inadequacy of the file formats. The present work has two goals: the first is to calculate the covariances of group-averaged cross sections from the covariance files generated by SAMMY, because these can be more readily utilized in criticality predictability calculations. The second goal is to propose a more practical interface between SAMMY and the evaluated files. Examples are given for {sup 235}U in the popular 199- and 238-group structures, using the latest ORNL evaluation of the {sup 235}U resonance parameters.

Derrien, H.; Larson, N.M.; Leal, L.C.

1997-09-01T23:59:59.000Z

67

Applicability of ZPR critical experiment data to criticality safety  

SciTech Connect (OSTI)

More than a hundred zero power reactor (ZPR) critical assemblies were constructed, over a period of about three decades, at the Argonne National Laboratory ZPR-3, ZPR-6, ZPR-9 and ZPPR fast critical assembly facilities. To be sure, the original reason for performing these critical experiments was to support fast reactor development. Nevertheless, data from some of the assemblies are well suited to form the basis for valuable, new criticality safety benchmarks. The purpose of this paper is to describe the ZPR data that would be of benefit to the criticality safety community and to explain how these data could be developed into practical criticality safety benchmarks.

Schaefer, R.W.; Aumeier, S.E.; McFarlane, H.F.

1995-12-31T23:59:59.000Z

68

Critical reaction rates in hypersonic combustion chemistry  

SciTech Connect (OSTI)

High Mach number flight requires that the scramjet propulsion system operate at a relatively low static inlet pressure and a high inlet temperature. These two constraints can lead to extremely high temperatures in the combustor, yielding high densities of radical species and correspondingly poor chemical combustion efficiency. As the temperature drops in the nozzle expansion, recombination of these excess radicals can produce more product species, higher heat yield, and potentially more thrust. The extent to which the chemical efficiency can be enhanced in the nozzle expansion depends directly on the rate of the radical recombination reactions. A comprehensive assessment of the important chemical processes and an experimental validation of the critical rate parameters is therefore required if accurate predictions of scramjet performance are to be obtained. This report covers the identification of critical reactions, and the critical reaction rates in hypersonic combustion chemistry. 4 refs., 2 figs.

Oldenborg, R.C.; Harradine, D.M.; Loge, G.W.; Lyman, J.L.; Schott, G.L.; Winn, K.R.

1989-01-01T23:59:59.000Z

69

Critical QCD in Nuclear Collisions  

E-Print Network [OSTI]

A detailed study of correlated scalars, produced in collisions of nuclei and associated with the $\\sigma$-field fluctuations, $(\\delta \\sigma)^2= $, at the QCD critical point (critical fluctuations), is performed on the basis of a critical event generator (Critical Monte-Carlo) developed in our previous work. The aim of this analysis is to reveal suitable observables of critical QCD in the multiparticle environment of simulated events and select appropriate signatures of the critical point, associated with new and strong effects in nuclear collisions.

N. G. Antoniou; Y. F. Contoyiannis; F. K. Diakonos; G. Mavromanolakis

2005-05-20T23:59:59.000Z

70

The Critical Mass Laboratory at Rocky Flats  

SciTech Connect (OSTI)

The Critical Mass Laboratory (CML) at Rocky Flats northwest of Denver, Colorado, was built in 1964 and commissioned to conduct nuclear experiments on January 28, 1965. It was built to attain more accurate and precise experimental data to ensure nuclear criticality safety at the plant than were previously possible. Prior to its construction, safety data were obtained from long extrapolations of subcritical data (called in situ experiments), calculated parameters from reactor engineering 'models', and a few other imprecise methods. About 1700 critical and critical-approach experiments involving several chemical forms of enriched uranium and plutonium were performed between then and 1988. These experiments included single units and arrays of fissile materials, reflected and 'bare' systems, and configurations with various degrees of moderation, as well as some containing strong neutron absorbers. In 1989, a raid by the Federal Bureau of Investigation (FBI) caused the plant as a whole to focus on 'resumption' instead of further criticality safety experiments. Though either not recognized or not admitted for a few years, that FBI raid did sound the death knell for the CML. The plant's optimistic goal of resumption evolved to one of deactivation, decommissioning, and plantwide demolition during the 1990s. The once-proud CML facility was finally demolished in April of 2002.

Rothe, Robert E

2003-10-15T23:59:59.000Z

71

Criticality & Recovery Preparedness: ePHI Systems Criticality Designation  

E-Print Network [OSTI]

Criticality & Recovery Preparedness: ePHI Systems 5100 EX.A Criticality Designation 1. Primary source of PHI for pre-research; or secondary source of PHI for research/pre-research; secondary source of PHI for treatment, payment or healthcare operations; or teaching Criticality mapped to Recovery

72

Critical pulse power components  

SciTech Connect (OSTI)

Critical components for pulsed power conditioning systems will be reviewed. Particular emphasis will be placed on those components requiring significant development efforts. Capacitors, for example, are one of the weakest elements in high-power pulsed systems, especially when operation at high-repetition frequencies for extended periods of time are necessary. Switches are by far the weakest active components of pulse power systems. In particular, opening switches are essentially nonexistent for most applications. Insulaton in all systems and components requires development and improvement. Efforts under way in technology base development of pulse power components will be discussed.

Sarjeant, W.J.; Rohwein, G.J.

1981-01-01T23:59:59.000Z

73

Careers | Critical Materials Institute  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone6Energy,MUSEUM DISPLAYCareers The Critical Materials Institute

74

Critical Materials Workshop  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up fromDepartmentTieCelebratePartners with Siemens onSite | Department ofServicesCritical

75

Critical Materials Institute |  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation InInformation InExplosion Monitoring:Home| Visitors|Upcoming Events and ‹ › ScienceCMI

76

Nuclear Engineering Nuclear Criticality Safety  

E-Print Network [OSTI]

Nuclear Engineering Nuclear Criticality Safety The Nuclear Engineering Division (NE) of Argonne National Laboratory is experienced in performing criticality safety and shielding evaluations for nuclear, and neutron spectra. The NE nuclear criticality safety (NCS) capabilities are based on a staff with decades

Kemner, Ken

77

Administrative Procedures for Obtaining Unescorted Access to Radioactive Materials of Concern  

E-Print Network [OSTI]

-related need". These mandates include fingerprint submission and a Federal Bureau of Investigation ("FBI to the FBI. The information received back from the FBI will be reviewed and confidentially considered that individual obtained from the FBI for the purpose of assuring correct and complete information. Columbia

Jia, Songtao

78

Criticality Safety Basics for INL FMHs and CSOs  

SciTech Connect (OSTI)

Nuclear power is a valuable and efficient energy alternative in our energy-intensive society. However, material that can generate nuclear power has properties that require this material be handled with caution. If improperly handled, a criticality accident could result, which could severely harm workers. This document is a modular self-study guide about Criticality Safety Principles. This guide's purpose it to help you work safely in areas where fissionable nuclear materials may be present, avoiding the severe radiological and programmatic impacts of a criticality accident. It is designed to stress the fundamental physical concepts behind criticality controls and the importance of criticality safety when handling fissionable materials outside nuclear reactors. This study guide was developed for fissionable-material-handler and criticality-safety-officer candidates to use with related web-based course 00INL189, BEA Criticality Safety Principles, and to help prepare for the course exams. These individuals must understand basic information presented here. This guide may also be useful to other Idaho National Laboratory personnel who must know criticality safety basics to perform their assignments safely or to design critically safe equipment or operations. This guide also includes additional information that will not be included in 00INL189 tests. The additional information is in appendices and paragraphs with headings that begin with 'Did you know,' or with, 'Been there Done that'. Fissionable-material-handler and criticality-safety-officer candidates may review additional information at their own discretion. This guide is revised as needed to reflect program changes, user requests, and better information. Issued in 2006, Revision 0 established the basic text and integrated various programs from former contractors. Revision 1 incorporates operation and program changes implemented since 2006. It also incorporates suggestions, clarifications, and additional information from readers and from personnel who took course 00INL189. Revision 1 also completely reorganized the training to better emphasize physical concepts behind the criticality controls that fissionable material handlers and criticality safety officers must understand. The reorganization is based on and consistent with changes made to course 00INL189 due to a review of course exam results and to discussions with personnel who conduct area-specific training.

V. L. Putman

2012-04-01T23:59:59.000Z

79

Examining Decision-Making Regarding Environmental Information  

SciTech Connect (OSTI)

Eight participants were asked to view a computer-based multimedia presentation on an environmental phenomenon. Participants were asked to play a role as a senior aide to a national legislator. In this role, they were told that the legislator had asked them to review a multimedia presentation regarding the hypoxic zone phenomenon in the Gulf of Mexico. Their task in assuming the role of a senior aide was to decide how important a problem this issue was to the United States as a whole, and the proportion of the legislator’s research budget that should be devoted to study of the problem. The presentation was divided into 7 segments, each containing some new information not contained in the previous segments. After viewing each segment, participants were asked to indicate how close they were to making a decision and how certain they were that their current opinion would be their final decision. After indicating their current state of decision-making, participants were interviewed regarding the factors affecting their decision-making. Of interest was the process by which participants moved toward a decision. This experiment revealed a number of possible directions for future research. There appeared to be two approaches to decision-making: Some decision-makers moved steadily toward a decision, and occasionally reversed decisions after viewing information, while others abruptly reached a decision after a certain time period spent reviewing the information. Although the difference in estimates of distance to decisions did not differ statistically for these two groups, that difference was reflected in the participants’ estimates of confidence that their current opinion would be their final decision. The interviews revealed that the primary difference between these two groups was in their trade-offs between willingness to spend time in information search and the acquisition of new information. Participants who were less confident about their final decision, tended to be the same group of participants who moved slowly toward a decision. These participants also tended to indicate that acquisition of information was more critical than the amount of time spent on the information search. The second group tended to form a set of specific questions for which they desired specific answers. This group was more likely to demonstrate a significant reduction in their distance to a decision much earlier than the first group. In addition, this group tended to be very confident of their final decision and indicated that time spent in information search was more critical than obtaining new information. They indicated that the value of information obtained must remain high to justify the extensive time spent in information search.

Marble, Julie Lynne; Medema, Heather Dawne; Hill, Susan Gardiner

2001-10-01T23:59:59.000Z

80

A Critical Assessment of the "Stable Indenter Velocity" Method for Obtaining the Creep Stress Exponent from Indentation Data  

E-Print Network [OSTI]

as analytical rigid bodies. Specimens were modelled as deformable bodies and meshed with linear (type CAX3) triangular elements. The meshes were refined in regions directly beneath the indenter, in order to handle the high gradients of stress, strain...

Dean, J.; Campbell, J.; Aldrich-Smith, G.; Clyne, T. W.

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "obtain information critical" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Research | Critical Materials Institute  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest RegionatSearch Welcome toResearch Areas OurLANLSoftware &

82

Resources | Critical Materials Institute  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest RegionatSearch Welcome toResearch AreasResearch GeneResourcesUser

83

Disclaimers | Critical Materials Institute  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest Region service area. The DesertDirections TheMadison PhysicsDisclaimers

84

Quantum-information approach to the quantum phase transition in the Kitaev honeycomb model  

SciTech Connect (OSTI)

The Kitaev honeycomb model with a topological phase transition at zero temperature is studied using the quantum-information method. Based on the exact solution of the ground state, the mutual information between two nearest sites and between two bonds with the greatest distance are obtained. It is found that the mutual information shows some singularities at the critical point where the system transits from the gapless phase to the gapped phase. Finite-size effects and scaling behavior are also studied. Our results indicate that the mutual information can serve as a good indicator of the topological phase transition. This is because the mutual information is believed to be able to catch some global correlation properties of the system. Meanwhile, this method has the advantages that the phase transition can be determined easily and the order parameters, which are hard to obtain for some topological phase transitions, are not necessarily known.

Cui Jian; Cao Junpeng; Fan Heng [Institute of Physics, Chinese Academy of Sciences, Beijing National Laboratory for Condensed Matter Physics, Beijing 100190 (China)

2010-08-15T23:59:59.000Z

85

Isospin Effects of the Critical Behavior in the Lattice Gas Model  

E-Print Network [OSTI]

Isospin effects of the critical phenomena were studied via Xe isotopes in the frame of lattice gas model. All the critical temperatures for four Xe isotopes are close to 5.5 MeV at the same freeze-out density of about 0.39 $\\rho_0$. The critical values of power law parameter of mass distribution, mean multiplicity of intermediate mass fragments (IMF), information entropy and Campi's second moment show minor dependence on the isospin at the critical point.

Yu-Gang Ma; Qian-Min Su; Wen-Qing Shen; Jian-Song Wang; Xiang-Zhou Cai; De-Qing Fang

1999-04-21T23:59:59.000Z

86

Breaking information-thermodynamics link  

E-Print Network [OSTI]

The information-thermodynamics link is revisited, going back to the analysis of Szilard's engine. It is argued that instead of equivalence rather complementarity of physical entropy and information theoretical one is a correct concept. Famous Landauer's formula for a minimal cost of information processing is replaced by a new one which takes into account accuracy and stability of information encoding. Two recent experiments illustrating the information-energy conversion are critically discussed.

Robert Alicki

2014-06-23T23:59:59.000Z

87

Review of Yucca Mountain Disposal Criticality Studies  

SciTech Connect (OSTI)

The U.S. Department of Energy (DOE), Office of Civilian Radioactive Waste Management, submitted a license application for construction authorization of a deep geologic repository at Yucca Mountain, Nevada, in June of 2008. The license application is currently under review by the U.S. Nuclear Regulatory Commission. However,on March 3, 2010 the DOE filed a motion requesting withdrawal of the license application. With the withdrawal request and the development of the Blue Ribbon Commission to seek alternative strategies for disposing of spent fuel, the status of the proposed repository at Yucca Mountain is uncertain. What is certain is that spent nuclear fuel (SNF) will continue to be generated and some long-lived components of the SNF will eventually need a disposition path(s). Strategies for the back end of the fuel cycle will continue to be developed and need to include the insights from the experience gained during the development of the Yucca Mountain license application. Detailed studies were performed and considerable progress was made in many key areas in terms of increased understanding of relevant phenomena and issues regarding geologic disposal of SNF. This paper reviews selected technical studies performed in support of the disposal criticality analysis licensing basis and the use of burnup credit. Topics include assembly misload analysis, isotopic and criticality validation, commercial reactor critical analyses, loading curves, alternative waste package and criticality control studies, radial burnup data and effects, and implementation of a conservative application model in the criticality probabilistic evaluation as well as other information that is applicable to operations regarding spent fuel outside the reactor. This paper summarizes the work and significant accomplishments in these areas and provides a resource for future, related activities.

Scaglione, John M [ORNL] [ORNL; Wagner, John C [ORNL] [ORNL

2011-01-01T23:59:59.000Z

88

Criticality Safety Code Validation with LWBR’s SB Cores  

SciTech Connect (OSTI)

The first set of critical experiments from the Shippingport Light Water Breeder Reactor Program included eight, simple geometry critical cores built with 233UO2-ZrO2, 235UO2-ZrO2, ThO2, and ThO2-233UO2 nuclear materials. These cores are evaluated, described, and modeled to provide benchmarks and validation information for INEEL criticality safety calculation methodology. In addition to consistency with INEEL methodology, benchmark development and nuclear data are consistent with International Criticality Safety Benchmark Evaluation Project methodology.Section 1 of this report introduces the experiments and the reason they are useful for validating some INEEL criticality safety calculations. Section 2 provides detailed experiment descriptions based on currently available experiment reports. Section 3 identifies criticality safety validation requirement sources and summarizes requirements that most affect this report. Section 4 identifies relevant hand calculation and computer code calculation methodologies used in the experiment evaluation, benchmark development, and validation calculations. Section 5 provides a detailed experiment evaluation. This section identifies resolutions for currently unavailable and discrepant information. Section 5 also reports calculated experiment uncertainty effects. Section 6 describes the developed benchmarks. Section 6 includes calculated sensitivities to various benchmark features and parameters. Section 7 summarizes validation results. Appendices describe various assumptions and their bases, list experimenter calculations results for items that were independently calculated for this validation work, report other information gathered and developed by SCIENTEC personnel while evaluating these same experiments, and list benchmark sample input and miscellaneous supplementary data.

Putman, Valerie Lee

2003-01-01T23:59:59.000Z

89

Arene Trifluoromethylation: An Effective Strategy to Obtain Air...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Effective Strategy to Obtain Air-Stable nType Organic Semiconductors with Tunable Optoelectronic Arene Trifluoromethylation: An Effective Strategy to Obtain Air-Stable nType...

90

Policy Flash 2013-24 Fee Determinations: Requirement to Obtain...  

Office of Environmental Management (EM)

Policy Flash 2013-24 Fee Determinations: Requirement to Obtain Acquisition Executive's Input Policy Flash 2013-24 Fee Determinations: Requirement to Obtain Acquisition Executive's...

91

CASE CRITICAL Keystone XL Pipeline  

E-Print Network [OSTI]

CASE CRITICAL Keystone XL Pipeline: A Line in the Sand? Case Critical is presented by ASU's Global Professor, ASU's School of Geographical Sciences and Urban Planning The Keystone XL Pipeline, a large, and environmental pressures of the heated Pipeline controversy. #12;

Hall, Sharon J.

92

Sensitivity analysis of coupled criticality calculations  

SciTech Connect (OSTI)

Perturbation theory based sensitivity analysis is a vital part of todays' nuclear reactor design. This paper presents an extension of standard techniques to examine coupled criticality problems with mutual feedback between neutronics and an augmenting system (for example thermal-hydraulics). The proposed procedure uses a neutronic and an augmenting adjoint function to efficiently calculate the first order change in responses of interest due to variations of the parameters describing the coupled problem. The effect of the perturbations is considered in two different ways in our study: either a change is allowed in the power level while maintaining criticality (power perturbation) or a change is allowed in the eigenvalue while the power is constrained (eigenvalue perturbation). The calculated response can be the change in the power level, the reactivity worth of the perturbation, or the change in any functional of the flux, the augmenting dependent variables and the input parameters. To obtain power- and criticality-constrained sensitivities power- and k-reset procedures can be applied yielding identical results. Both the theoretical background and an application to a one dimensional slab problem are presented, along with an iterative procedure to compute the necessary adjoint functions using the neutronics and the augmenting codes separately, thus eliminating the need of developing new programs to solve the coupled adjoint problem. (authors)

Perko, Z.; Kloosterman, J. L.; Lathouwers, D. [Delft Univ. of Technology, Faculty of Applied Physics, Dept. of Radiation, Radionuclides and Reactors, Mekelweg 15, 2629 JB, Delft (Netherlands)

2012-07-01T23:59:59.000Z

93

Tank farm nuclear criticality review  

SciTech Connect (OSTI)

The technical basis for the nuclear criticality safety of stored wastes at the Hanford Site Tank Farm Complex was reviewed by a team of senior technical personnel whose expertise covered all appropriate aspects of fissile materials chemistry and physics. The team concluded that the detailed and documented nucleonics-related studies underlying the waste tanks criticality safety basis were sound. The team concluded that, under current plutonium inventories and operating conditions, a nuclear criticality accident is incredible in any of the Hanford single-shell tanks (SST), double-shell tanks (DST), or double-contained receiver tanks (DCRTS) on the Hanford Site.

Bratzel, D.R., Westinghouse Hanford

1996-09-11T23:59:59.000Z

94

Autoclave nuclear criticality safety analysis  

SciTech Connect (OSTI)

Steam-heated autoclaves are used in gaseous diffusion uranium enrichment plants to heat large cylinders of UF{sub 6}. Nuclear criticality safety for these autoclaves is evaluated. To enhance criticality safety, systems are incorporated into the design of autoclaves to limit the amount of water present. These safety systems also increase the likelihood that any UF{sub 6} inadvertently released from a cylinder into an autoclave is not released to the environment. Up to 140 pounds of water can be held up in large autoclaves. This mass of water is sufficient to support a nuclear criticality when optimally combined with 125 pounds of UF{sub 6} enriched to 5 percent U{sup 235}. However, water in autoclaves is widely dispersed as condensed droplets and vapor, and is extremely unlikely to form a critical configuration with released UF{sub 6}.

D`Aquila, D.M. [Martin Marietta Energy Systems, Inc., Piketon, OH (United States); Tayloe, R.W. Jr. [Battelle, Columbus, OH (United States)

1991-12-31T23:59:59.000Z

95

Lecture notes for criticality safety  

SciTech Connect (OSTI)

These lecture notes for criticality safety are prepared for the training of Department of Energy supervisory, project management, and administrative staff. Technical training and basic mathematics are assumed. The notes are designed for a two-day course, taught by two lecturers. Video tapes may be used at the options of the instructors. The notes provide all the materials that are necessary but outside reading will assist in the fullest understanding. The course begins with a nuclear physics overview. The reader is led from the macroscopic world into the microscopic world of atoms and the elementary particles that constitute atoms. The particles, their masses and sizes and properties associated with radioactive decay and fission are introduced along with Einstein's mass-energy equivalence. Radioactive decay, nuclear reactions, radiation penetration, shielding and health-effects are discussed to understand protection in case of a criticality accident. Fission, the fission products, particles and energy released are presented to appreciate the dangers of criticality. Nuclear cross sections are introduced to understand the effectiveness of slow neutrons to produce fission. Chain reactors are presented as an economy; effective use of the neutrons from fission leads to more fission resulting in a power reactor or a criticality excursion. The six-factor formula is presented for managing the neutron budget. This leads to concepts of material and geometric buckling which are used in simple calculations to assure safety from criticality. Experimental measurements and computer code calculations of criticality are discussed. To emphasize the reality, historical criticality accidents are presented in a table with major ones discussed to provide lessons-learned. Finally, standards, NRC guides and regulations, and DOE orders relating to criticality protection are presented.

Fullwood, R.

1992-03-01T23:59:59.000Z

96

Motion Coordination with Distributed Information The challenge of obtaining global behavior from local interaction  

E-Print Network [OSTI]

animals exhibit complex collective behaviors when migrating, such as obstacle avoiding, leader election monitoring, and exploration. As a consequence of this growing interest, research on cooperative control has, and the development of design methodologies that provide mobile networks with provably correct cooperative strategies

97

Quantum correlations in bulk properties of solids obtained from neutron scattering  

E-Print Network [OSTI]

We demonstrate that inelastic neutron scattering technique can be used to indirectly detect and measure the macroscopic quantum correlations quantified by both entanglement and discord in a quantum magnetic material, VODPO4 . 1D2O. The amount of quantum correlations is obtained 2 by analyzing the neutron scattering data of magnetic excitations in isolated V4+ spin dimers. Our quantitative analysis shows that the critical temperature of this material can reach as high as Tc = 82.5 K, where quantum entanglement drops to zero. Significantly, quantum discord can even survive at Tc = 300 K and may be used in room temperature quantum devices. Taking into account the spin-orbit (SO) coupling, we also predict theoretically that entanglement can be significantly enhanced and the critical temperature Tc increases with the strength of spin-orbit coupling.

Ben-Qiong Liu; Lian-Ao Wu; Guo-Mo Zeng; Jian-Ming Song; Wei Luo; Yang Lei; Guang-Ai Sun; Bo Chen; Shu-Ming Peng

2014-07-02T23:59:59.000Z

98

ORNL/CDIAC-128 CARBON DIOXIDE, HYDROGRAPHIC, AND CHEMICAL DATA OBTAINED  

E-Print Network [OSTI]

.S.A. Prepared by Alexander Kozyr1 Carbon Dioxide Information Analysis Center 1 Energy, Environment of Biological and Environmental Research U.S. Department of Energy Budget Activity Numbers KP 12 04 01 0 and KP#12;ORNL/CDIAC-128 NDP-075 CARBON DIOXIDE, HYDROGRAPHIC, AND CHEMICAL DATA OBTAINED DURING THE R

99

Derivation of criticality safety benchmarks from ZPR fast critical assemblies  

SciTech Connect (OSTI)

Scores of critical assemblies were constructed, over a period of about three decades, at the Argonne National Laboratory ZPR-3, ZPR-6, ZPR-9, and ZPPR fast critical assembly facilities. Most of the assemblies were mockups of various liquid-metal fast breeder reactor designs. These tended to be complex, containing, for example, mockups of control rods and control rod positions. Some assemblies, however, were `physics benchmarks`. These relatively `clean` assemblies had uniform compositions and simple geometry and were designed to test fast reactor physics data and methods. Assemblies in this last category are well suited to form the basis for new criticality safety benchmarks. The purpose of this paper is to present an overview of some of these benchmark candidates and to describe the strategy being used to create the benchmarks.

Schaefer, R.W.; McKnight, R.D.

1997-09-01T23:59:59.000Z

100

Areas of Critical Environmental Concern | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating SolarElectricEnergyCT Biomass FacilityArdica Technologies Jump to: navigation,Concern

Note: This page contains sample records for the topic "obtain information critical" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Information Information for students  

E-Print Network [OSTI]

Disability & Dyslexia Information Guidance Support Information for students with disabilities the Disability and Dyslexia Service · Accessing your curriculum · Specialist examination arrangements · Dyslexia and Dyslexia Service for more information. Our contact details can be found on the back page. 03 #12

Wright, Francis

102

Integrating agile practices into critical software development  

E-Print Network [OSTI]

Integrating agile practices into critical software development Katarzyna Lukasiewicz, Janusz Górski. In this text we describe our research towards introducing agile practices into critical software development processes Keywords-- safety-critical software; agile practices; software development; process improvement

Boyer, Edmond

103

Criticality Safety Controls Implementation Inspection Criteria...  

Broader source: Energy.gov (indexed) [DOE]

Criticality Safety Controls Implementation Inspection Criteria, Approach, and Lines of Inquiry, October 23, 2009, (HSS CRAD 64-18, Rev 0 ) Criticality Safety Controls...

104

Nuclear criticality safety: 2-day training course  

SciTech Connect (OSTI)

This compilation of notes is presented as a source reference for the criticality safety course. At the completion of this training course, the attendee will: be able to define terms commonly used in nuclear criticality safety; be able to appreciate the fundamentals of nuclear criticality safety; be able to identify factors which affect nuclear criticality safety; be able to identify examples of criticality controls as used as Los Alamos; be able to identify examples of circumstances present during criticality accidents; have participated in conducting two critical experiments; be asked to complete a critique of the nuclear criticality safety training course.

Schlesser, J.A. [ed.] [comp.

1997-02-01T23:59:59.000Z

105

Critical Materials Workshop Plenary Session Videos | Department...  

Broader source: Energy.gov (indexed) [DOE]

Critical Materials Workshop Plenary Session Videos Critical Materials Workshop Plenary Session Videos Welcome and Overview of Workshop and Energy Innovation Hubs Speakers * Dr. Leo...

106

CRAD, Criticality Safety - Idaho Accelerated Retrieval Project...  

Broader source: Energy.gov (indexed) [DOE]

Criticality Safety - Idaho Accelerated Retrieval Project Phase II CRAD, Criticality Safety - Idaho Accelerated Retrieval Project Phase II February 2006 A section of Appendix C to...

107

DOE and Critical Materials Video (Text Version)  

Broader source: Energy.gov [DOE]

This is a text version of the "DOE and Critical Materials" video presented at the Critical Materials Workshop, held on April 3, 2012 in Arlington, Virginia.

108

Lab obtains approval to begin design on new radioactive waste...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

New radioactive waste staging facility Lab obtains approval to begin design on new radioactive waste staging facility The 4-acre complex will include multiple staging buildings...

109

Idaho Site Obtains Patent for Nuclear Reactor Sodium Cleanup...  

Office of Environmental Management (EM)

Idaho Site Obtains Patent for Nuclear Reactor Sodium Cleanup Treatment March 28, 2013 - 12:00pm Addthis CWI engineers Jeff Jones, David Tolman, right, and Kirk Dooley...

110

Quantum criticality for few-body systems: Path-integral approach Ricardo A. Sauerwein1,2  

E-Print Network [OSTI]

to obtain the critical nuclear charges for few-electron atoms 2,5 and simple diatomic molecules 7Quantum criticality for few-body systems: Path-integral approach Ricardo A. Sauerwein1,2 and Sabre 2001 We present the path-integral approach to treat quantum phase transitions and critical phenomena

Kais, Sabre

111

Information Physics: The New Frontier  

E-Print Network [OSTI]

At this point in time, two major areas of physics, statistical mechanics and quantum mechanics, rest on the foundations of probability and entropy. The last century saw several significant fundamental advances in our understanding of the process of inference, which make it clear that these are inferential theories. That is, rather than being a description of the behavior of the universe, these theories describe how observers can make optimal predictions about the universe. In such a picture, information plays a critical role. What is more is that little clues, such as the fact that black holes have entropy, continue to suggest that information is fundamental to physics in general. In the last decade, our fundamental understanding of probability theory has led to a Bayesian revolution. In addition, we have come to recognize that the foundations go far deeper and that Cox's approach of generalizing a Boolean algebra to a probability calculus is the first specific example of the more fundamental idea of assigning valuations to partially-ordered sets. By considering this as a natural way to introduce quantification to the more fundamental notion of ordering, one obtains an entirely new way of deriving physical laws. I will introduce this new way of thinking by demonstrating how one can quantify partially-ordered sets and, in the process, derive physical laws. The implication is that physical law does not reflect the order in the universe, instead it is derived from the order imposed by our description of the universe. Information physics, which is based on understanding the ways in which we both quantify and process information about the world around us, is a fundamentally new approach to science.

Kevin H. Knuth

2010-09-27T23:59:59.000Z

112

Mobile Information Access M. Satyanarayanan  

E-Print Network [OSTI]

Carnegie Mellon University Pittsburgh, PA 15213 To appear in IEEE Personal Communications, Volume 3, No. 1, February 1996 Abstract The ability to access information on demand when mobile will be a criticalMobile Information Access M. Satyanarayanan January 1996 CMU­CS­96­107 School of Computer Science

113

Quantum-information approach to rotating Bose-Einstein condensates  

SciTech Connect (OSTI)

We investigate the two-dimensional weakly interacting rotating Bose-Einstein condensate by the tools of quantum information theory. The critical exponents of the ground-state fidelity susceptibility and the correlation length of the system are obtained for the sudden change of the ground state when the first vortex is formed. This sudden change can also be indicated by the ground state entanglement. We also find the single-particle entanglement can be an indicator of the angular momentums for some real ground states. The single-particle entanglement of fractional quantum Hall states such as Laughlin state and Pfaffian state is also studied.

Liu Zhao; Guo Hongli; Chen Shu; Fan Heng [Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)

2009-12-15T23:59:59.000Z

114

A Review of Criticality Accidents 2000 Revision  

SciTech Connect (OSTI)

Criticality accidents and the characteristics of prompt power excursions are discussed. Sixty accidental power excursions are reviewed. Sufficient detail is provided to enable the reader to understand the physical situation, the chemistry and material flow, and when available the administrative setting leading up to the time of the accident. Information on the power history, energy release, consequences, and causes are also included when available. For those accidents that occurred in process plants, two new sections have been included in this revision. The first is an analysis and summary of the physical and neutronic features of the chain reacting systems. The second is a compilation of observations and lessons learned. Excursions associated with large power reactors are not included in this report.

Thomas P. McLaughlin; Shean P. Monahan; Norman L. Pruvost; Vladimir V. Frolov; Boris G. Ryazanov; Victor I. Sviridov

2000-05-01T23:59:59.000Z

115

Managing Critical Management Improvement Initiatives  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

Provides requirements and responsibilities for planning, executing and assessing critical management improvement initiatives within DOE. DOE N 251.59, dated 9/27/2004, extends this Notice until 10/01/2005. Archived 11-8-10. Does not cancel other directives.

2003-10-01T23:59:59.000Z

116

High critical current superconducting tapes  

DOE Patents [OSTI]

Improvements in critical current capacity for superconducting film structures are disclosed and include the use of a superconducting RE-BCO layer including a mixture of rare earth metals, e.g., yttrium and europium, where the ratio of yttrium to europium in the RE-BCO layer ranges from about 3 to 1 to from about 1.5 to 1.

Holesinger, Terry G. (Los Alamos, NM); Jia, Quanxi (Los Alamos, NM); Foltyn, Stephen R. (Los Alamos, NM)

2003-09-23T23:59:59.000Z

117

ORNL/TM-2011/450 Criticality Safety Validation of Scale 6.1  

E-Print Network [OSTI]

Government or any agency thereof. #12;ORNL/TM-2011/450 Reactor and Nuclear Systems Division CriticalityORNL/TM-2011/450 Criticality Safety Validation of Scale 6.1 November 2011 Prepared by W. J) representatives, and International Nuclear Information System (INIS) representatives from the following source

118

Theory of finite-entanglement scaling at one-dimensional quantum critical points  

E-Print Network [OSTI]

Studies of entanglement in many-particle systems suggest that most quantum critical ground states have infinitely more entanglement than non-critical states. Standard algorithms for one-dimensional many-particle systems construct model states with limited entanglement, which are a worse approximation to quantum critical states than to others. We give a quantitative theory of previously observed scaling behavior resulting from finite entanglement at quantum criticality: the scaling theory of finite entanglement is only superficially similar to finite-size scaling, and has a different physical origin. We find that finite-entanglement scaling is governed not by the scaling dimension of an operator but by the "central charge" of the critical point, which counts its universal degrees of freedom. An important ingredient is the recently obtained universal distribution of density-matrix eigenvalues at a critical point\\cite{calabrese1}. The parameter-free theory is checked against numerical scaling at several quantum critical points.

Frank Pollmann; Subroto Mukerjee; Ari Turner; Joel E. Moore

2009-04-20T23:59:59.000Z

119

X-ray and neutron scattering studies of magnetic critical fluctuations in holmium  

SciTech Connect (OSTI)

We describe measurements of the magnetic critical fluctuations of holmium by x-ray scattering techniques. The x-ray results are compared to those obtained in neutron scattering experiments performed on the same sample.

Thurston, T.R.; Helgesen, G.; Gibbs, D.; Shirane, G. [Brookhaven National Lab., Upton, NY (United States); Hill, J.P. [Brookhaven National Lab., Upton, NY (United States)]|[Massachusetts Inst. of Tech., Cambridge, MA (United States). Dept. of Physics; Gaulin, B.D. [Brookhaven National Lab., Upton, NY (United States)]|[McMaster Univ., Hamilton, ON (Canada). Dept. of Physics

1993-04-01T23:59:59.000Z

120

X-ray and neutron scattering studies of magnetic critical fluctuations in holmium  

SciTech Connect (OSTI)

We describe measurements of the magnetic critical fluctuations of holmium by x-ray scattering techniques. The x-ray results are compared to those obtained in neutron scattering experiments performed on the same sample.

Thurston, T.R.; Helgesen, G.; Gibbs, D.; Shirane, G. (Brookhaven National Lab., Upton, NY (United States)); Hill, J.P. (Brookhaven National Lab., Upton, NY (United States) Massachusetts Inst. of Tech., Cambridge, MA (United States). Dept. of Physics); Gaulin, B.D. (Brookhaven National Lab., Upton, NY (United States) McMaster Univ., Hamilton, ON (Canada). Dept. of Physics)

1993-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "obtain information critical" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Theoretical Analysis for Obtaining Physical Properties of Composite Electrodes  

E-Print Network [OSTI]

, 2003. Composite electrodes, composed of a mixture of electronically and ionically conducting materials and electronic conductivities of Nafion/ carbon composites. Shibuya et al.1 used an interdigitated arrayTheoretical Analysis for Obtaining Physical Properties of Composite Electrodes Parthasarathy M

Weidner, John W.

122

Treatment of biomass to obtain a target chemical  

DOE Patents [OSTI]

Target chemicals were produced using biocatalysts that are able to ferment sugars derived from treated biomass. Sugars were obtained by pretreating biomass under conditions of high solids and low ammonia concentration, followed by saccharification.

Dunson, Jr., James B. (Newark, DE); Tucker, III, Melvin P. (Lakewood, CO); Elander, Richard T. (Evergreen, CO); Hennessey, Susan Marie (Avondale, PA)

2010-08-24T23:59:59.000Z

123

Predicting cutability of lamb carcasses from easily obtainable carcass measurements  

E-Print Network [OSTI]

. One of the purposes of this study was to determine which of several measures of carcass cutability could be estimated from easily obtainable weights and measures. The measures of cutability considered in the study may be described as follows: a...

Oliver, William McCoy

1967-01-01T23:59:59.000Z

124

Degenerate and critical Bloch branes  

SciTech Connect (OSTI)

In the last few years a number of works reported the appearance of thick branes with internal structure, induced by the parameter which controls the interaction between two scalar fields coupled to gravity in (4,1) dimensions in warped space-time with one extra dimension. Here we show that one can implement the control over the brane thickness without needing to change the potential parameter. On the contrary, this is going to be done by means of the variation of a parameter associated with the domain wall degeneracy. We also report the existence of novel and qualitatively different solutions for a critical value of the degeneracy parameter, which could be called critical Bloch branes.

Souza Dutra, A. de [Abdus Salam ICTP, Strada Costiera 11, Trieste, I-34100 Italy (Italy); UNESP-Campus de Guaratingueta-DFQ, Departmento de Fisica e Quimica, 12516-410 Guaratingueta SP Brasil (Brazil); Amaro de Faria, A. C. Jr.; Hott, M. [UNESP-Campus de Guaratingueta-DFQ, Departmento de Fisica e Quimica, 12516-410 Guaratingueta SP Brasil (Brazil)

2008-08-15T23:59:59.000Z

125

Western Wind Strategy: Addressing Critical Issues for Wind Deployment  

SciTech Connect (OSTI)

The goal of the Western Wind Strategy project was to help remove critical barriers to wind development in the Western Interconnection. The four stated objectives of this project were to: (1) identify the barriers, particularly barriers to the operational integration of renewables and barriers identified by load-serving entities (LSEs) that will be buying wind generation, (2) communicate the barriers to state officials, (3) create a collaborative process to address those barriers with the Western states, utilities and the renewable industry, and (4) provide a role model for other regions. The project has been on the forefront of identifying and informing state policy makers and utility regulators of critical issues related to wind energy and the integration of variable generation. The project has been a critical component in the efforts of states to push forward important reforms and innovations that will enable states to meet their renewable energy goals and lower the cost to consumers of integrating variable generation.

Douglas Larson; Thomas Carr

2012-03-30T23:59:59.000Z

126

Dealloying below the critical potential  

SciTech Connect (OSTI)

Conventionally, the critical potential represents the potential marking the onset of bulk dealloying. The current density below the critical potential is only weakly dependent on potential, and the physical processes responsible for this passive-like behavior are poorly understood. In situ scanning tunneling microscopy was used to study the nature of the surface morphology which develops at potentials less than the critical potential. At fixed potential, the time-dependent evolution of the surface morphology was correlated with the observed current decay. This allowed the authors to identify and model the physical processes which control the current decay. They find two general regimes of power law behavior in the current decay corresponding to exhaustion of an activation-controlled dissolution process (t{sup {minus}1}) and the operation of one of three mechanisms of surface mass-transport control (t{sup {minus}5/8}, t{sup {minus}1/2}, and t{sup {minus}1/4}). Potential-pulsing experiments were performed in order to examine the effect of a blocking noble-metal layer on the nucleation and growth of the porous structure associated with bulk dealloying. These results were analyzed using a Johnson-Mehl-Avrami analysis. The Avrami exponents found were fractional and in the range of 1.25 to 1.8. The fractional exponents were interpreted in terms of the fractal dimension characterizing the initial stages of porosity formation during bulk dealloying.

Wagner, K.; Brankovic, S.R.; Dimitrov, N.; Sieradzki, K. [Arizona State Univ., Tempe, AZ (United States)

1997-10-01T23:59:59.000Z

127

High Critical Current Coated Conductors  

SciTech Connect (OSTI)

One of the important critical needs that came out of the DOE’s coated conductor workshop was to develop a high throughput and economic deposition process for YBCO. Metal-organic chemical vapor deposition (MOCVD) technique, the most critical steps in high technical micro fabrications, has been widely employed in semiconductor industry for various thin film growth. SuperPower has demonstrated that (Y,Gd)BCO films can be deposited rapid with world record performance. In addition to high critical current density with increased film thickness, flux pinning properties of REBCO films needs to be improved to meet the DOE requirements for various electric-power equipments. We have shown that doping with Zr can result in BZO nanocolumns, but at substantially reduced deposition rate. The primary purpose of this subtask is to develop high current density MOCVD-REBCO coated conductors based on the ion-beam assisted (IBAD)-MgO deposition process. Another purpose of this subtask is to investigate HTS conductor design optimization (maximize Je) with emphasis on stability and protection issues, and ac loss for REBCO coated conductors.

Paranthaman, M. P.; Selvamanickam, V. (SuperPower, Inc.)

2011-12-27T23:59:59.000Z

128

Gas-liquid critical point in ionic fluids  

E-Print Network [OSTI]

Based on the method of collective variables we develop the statistical field theory for the study of a simple charge-asymmetric $1:z$ primitive model (SPM). It is shown that the well-known approximations for the free energy, in particular DHLL and ORPA, can be obtained within the framework of this theory. In order to study the gas-liquid critical point of SPM we propose the method for the calculation of chemical potential conjugate to the total number density which allows us to take into account the higher order fluctuation effects. As a result, the gas-liquid phase diagrams are calculated for $z=2-4$. The results demonstrate the qualitative agreement with MC simulation data: critical temperature decreases when $z$ increases and critical density increases rapidly with $z$.

O. Patsahan; I. Mryglod; T. Patsahan

2006-06-27T23:59:59.000Z

129

Center for Nanophase Materials Sciences (CNMS) - Obtaining Entry to CNMS  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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130

Infrastructure and Administration The Sustainability Office identifies and obtains fund-  

E-Print Network [OSTI]

for campus conservation and renewable energy projects. We also create and refine university policies- quest an audit today, or find more information, at www.oregonstate.edu/sustainability/assessment Energy Audits Audits involve an assessment of environmental im- pacts associated with campus workspaces and can

Escher, Christine

131

Analytical Computation of Critical Exponents in Several Holographic Superconductors  

E-Print Network [OSTI]

It is very interesting that all holographic superconductors, such as s-wave, p-wave and d-wave holographic superconductors, show the universal mean-field critical exponent 1/2 at the critical temperature, just like Gindzburg-Landau (G-L) theory for second order phase transitions. Now it is believed that the universal critical exponents appear because the dual gravity theory is classic in the large $N$ limit. However, even in the large $N$ limit there is an exception called "non-mean-field theory": an extension of the s-wave model with a cubic term of the charged scalar field shows a different critical exponent 1. In this paper, we try to use analytical methods to obtain the critical exponents for these models to see how the properties of the gravity action decides the appearance of the mean-field behaviors. It will be seen that just like the G-L theory, it is the fundamental symmetries rather than the detailed parameters of the bulk theory that lead to the universal properties of the holographic superconducting phase transition. The feasibility of the called "non-mean-field theory" is also discussed.

Hua-Bi Zeng; Xin Gao; Yu Jiang; Hong-Shi Zong

2012-04-27T23:59:59.000Z

132

CMI Offers Webinars on Critical Materials and Rare Earths | Critical  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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133

CMI Webinar: Critical Elements in Phosphate | Critical Materials Institute  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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134

CRITICAL ISSUES IN HIGH END COMPUTING - FINAL REPORT  

SciTech Connect (OSTI)

High-End computing (HEC) has been a driver for advances in science and engineering for the past four decades. Increasingly HEC has become a significant element in the national security, economic vitality, and competitiveness of the United States. Advances in HEC provide results that cut across traditional disciplinary and organizational boundaries. This program provides opportunities to share information about HEC systems and computational techniques across multiple disciplines and organizations through conferences and exhibitions of HEC advances held in Washington DC so that mission agency staff, scientists, and industry can come together with White House, Congressional and Legislative staff in an environment conducive to the sharing of technical information, accomplishments, goals, and plans. A common thread across this series of conferences is the understanding of computational science and applied mathematics techniques across a diverse set of application areas of interest to the Nation. The specific objectives of this program are: Program Objective 1. To provide opportunities to share information about advances in high-end computing systems and computational techniques between mission critical agencies, agency laboratories, academics, and industry. Program Objective 2. To gather pertinent data, address specific topics of wide interest to mission critical agencies. Program Objective 3. To promote a continuing discussion of critical issues in high-end computing. Program Objective 4.To provide a venue where a multidisciplinary scientific audience can discuss the difficulties applying computational science techniques to specific problems and can specify future research that, if successful, will eliminate these problems.

Corones, James [Krell Institute] [Krell Institute

2013-09-23T23:59:59.000Z

135

Criticality Safety | Department of Energy  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of Energy Power Systems EngineeringDepartmentSmart GridThird Quarterinto PARSCriteria ReviewCriticality

136

Brain Mapping Using Topology Graphs Obtained by Surface Segmentation  

E-Print Network [OSTI]

Brain Mapping Using Topology Graphs Obtained by Surface Segmentation Fabien Vivodtzev1 , Lars@ucdavis.edu Summary. Brain mapping is a technique used to alleviate the tedious and time- consuming process of annotating brains by mapping existing annotations from brain atlases to individual brains. We introduce

Linsen, Lars

137

INSTRUCTIONS FOR OBTAINING CENSUS DATA FROM E-STAT  

E-Print Network [OSTI]

Titlelink to connect to E-Stat. You may be asked to enter a user ID and password (depending on where you are). Just1 INSTRUCTIONS FOR OBTAINING CENSUS DATA FROM E-STAT Go to the Library homepage http://library.mcmaster.ca Click on the FIND ARTICLES tab. Click on the letter E and scroll down to find E-Stat. Clickonthe

Haykin, Simon

138

Damping filter method for obtaining spatially localized solutions  

E-Print Network [OSTI]

Spatially localized structures are key components of turbulence and other spatio-temporally chaotic systems. From a dynamical systems viewpoint, it is desirable to obtain corresponding exact solutions, though their existence is not guaranteed. A damping filter method is introduced to obtain variously localized solutions, and adopted into two typical cases. This method introduces a spatially selective damping effect to make a good guess at the exact solution, and we can obtain an exact solution through a continuation with the damping amplitude. First target is a steady solution to Swift-Hohenberg equation, which is a representative of bi-stable systems in which localized solutions coexist, and a model for span-wisely localized cases. Not only solutions belonging to the well-known snaking branches but also those belonging to an isolated branch known as "isolas" are found with a continuation paths between them in phase space extended with the damping amplitude. This indicates that this spatially selective excitation mechanism has an advantage in searching spatially localized solutions. Second target is a spatially localized traveling-wave solution to Kuramoto-Sivashinsky equation, which is a model for stream-wisely localized cases. Since the spatially selective damping effect breaks Galilean and translational invariances, the propagation velocity cannot be determined uniquely while the damping is active, and a singularity arises when these invariances are recovered. We demonstrate that this singularity can be avoided by imposing a simple condition, and a localized traveling-wave solution is obtained with a specific propagation speed.

Toshiki Teramura; Sadayoshi Toh

2014-04-30T23:59:59.000Z

139

OBTAINING EMPLOYMENT AT THE UNIVERSITY OF HAWAI`I  

E-Print Network [OSTI]

OBTAINING EMPLOYMENT AT THE UNIVERSITY OF HAWAI`I Employees at the University of Hawai`i fall into one of four distinct categories of employment ­ civil service, faculty, administrative of Campus Security Policy and Campus Crime Statistics Act, annual campus crime statistics for the University

Olsen, Stephen L.

140

Critical Materials Workshop Final Participant List  

Broader source: Energy.gov [DOE]

List of participants who attended the Critical Materials Workshop held on April 3, 2012 in Arlington, VA

Note: This page contains sample records for the topic "obtain information critical" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Anomalies of Nuclear Criticality, Revision 6  

SciTech Connect (OSTI)

This report is revision 6 of the Anomalies of Nuclear Criticality. This report is required reading for the training of criticality professionals in many organizations both nationally and internationally. This report describes many different classes of nuclear criticality anomalies that are different than expected.

Clayton, E. D.; Prichard, Andrew W.; Durst, Bonita E.; Erickson, David; Puigh, Raymond J.

2010-02-19T23:59:59.000Z

142

Obtaining anisotropic velocity data for proper depth seismic imaging  

SciTech Connect (OSTI)

The paper deals with the problem of obtaining anisotropic velocity data due to continuous acoustic impedance-based measurements while scanning in the axial direction along the walls of the borehole. Diagrams of full conductivity of the piezoceramic transducer were used to derive anisotropy parameters of the rock sample. The measurements are aimed to support accurate depth imaging of seismic data. Understanding these common anisotropy effects is important when interpreting data where it is present.

Egerev, Sergey; Yushin, Victor; Ovchinnikov, Oleg; Dubinsky, Vladimir; Patterson, Doug [Andreyev Acoustics Institute, Moscow, 117036 (Russian Federation); Baker Hughes, Inc, 2001 Rankin Road, Houston, TX, 77073 (United States)

2012-05-24T23:59:59.000Z

143

Hydrodesulfurization and hydrodenitrogenation catalysts obtained from coal mineral matter  

DOE Patents [OSTI]

A hydrotreating catalyst is prepared from coal mineral matter obtained by low temperature ashing coals of relatively low bassanite content by the steps of: (a) depositing on the low temperature ash 0.25-3 grams of an iron or nickel salt in water per gram of ash and drying a resulting slurry; (b) crushing and sizing a resulting solid; and (c) heating the thus-sized solid powder in hydrogen.

Liu, Kindtoken H. D. (Newark, DE); Hamrin, Jr., Charles E. (Lexington, KY)

1982-01-01T23:59:59.000Z

144

Counterterms, critical gravity and holography  

E-Print Network [OSTI]

We consider counterterms for odd dimensional holographic CFTs. These counterterms are derived by demanding cut-off independence of the CFT partition function on $S^d$ and $S^1 \\times S^{d-1}$. The same choice of counterterms leads to a cut-off independent Schwarzschild black hole entropy. When treated as independent actions, these counterterm actions resemble critical theories of gravity, i.e., higher curvature gravity theories where the additional massive spin-2 modes become massless. Equivalently, in the context of AdS/CFT, these are theories where at least one of the central charges associated with the trace anomaly vanishes. Connections between these theories and logarithmic CFTs are discussed. For a specific choice of parameters, the theories arising from counterterms are non-dynamical and resemble a DBI generalization of gravity. For even dimensional CFTs, analogous counterterms cancel log-independent cut-off dependence.

Kallol Sen; Aninda Sinha; Nemani V. Suryanarayana

2012-05-18T23:59:59.000Z

145

Critical heat flux test apparatus  

DOE Patents [OSTI]

An apparatus for testing, in situ, highly irradiated specimens at high temperature transients is provided. A specimen, which has a thermocouple device attached thereto, is manipulated into test position in a sealed quartz heating tube by a robot. An induction coil around a heating portion of the tube is powered by a radio frequency generator to heat the specimen. Sensors are connected to monitor the temperatures of the specimen and the induction coil. A quench chamber is located below the heating portion to permit rapid cooling of the specimen which is moved into this quench chamber once it is heated to a critical temperature. A vacuum pump is connected to the apparatus to collect any released fission gases which are analyzed at a remote location.

Welsh, Robert E. (West Mifflin, PA); Doman, Marvin J. (McKeesport, PA); Wilson, Edward C. (West Mifflin, PA)

1992-01-01T23:59:59.000Z

146

The Los Alamos Critical Experiments Facility Program  

SciTech Connect (OSTI)

Critical assemblies of precisely known materials and reproducible and easily calculated geometries have been constructed at the Los Alamos National Laboratory since the 1940s. Initially, these assemblies were built to provide information necessary for the nuclear weapons development effort. Subsequently, intensive studies of the assemblies themselves were undertaken to provide a better understanding of the physics of the fission process and other nuclear reactions in the nuclear materials from which these machine were constructed and in other materials irradiated in these assemblies. Some of these assemblies (notably Jezebel, Flattop, Big Ten, and Godiva) have been used as benchmark assemblies to compare the results of experimental measurements and computations of certain nuclear reaction parameters. These comparisons are used to validate both the input nuclear data and the computational methods. In addition to these normally fueled benchmark assemblies, other assembly machines are fueled periodically to provide specific and detailed results for parameter sensitivity studies for a large number of applications. Some of these machines and their applications are described.

Dowdy, E.J.

1987-01-01T23:59:59.000Z

147

Hybrid nuclear reactor grey rod to obtain required reactivity worth  

DOE Patents [OSTI]

Hybrid nuclear reactor grey rods are described, wherein geometric combinations of relatively weak neutron absorber materials such as stainless steel, zirconium or INCONEL, and relatively strong neutron absorber materials, such as hafnium, silver-indium cadmium and boron carbide, are used to obtain the reactivity worths required to reach zero boron change load follow. One embodiment includes a grey rod which has combinations of weak and strong neutron absorber pellets in a stainless steel cladding. The respective pellets can be of differing heights. A second embodiment includes a grey rod with a relatively thick stainless steel cladding receiving relatively strong neutron absorber pellets only. A third embodiment includes annular relatively weak netron absorber pellets with a smaller diameter pellet of relatively strong absorber material contained within the aperture of each relatively weak absorber pellet. The fourth embodiment includes pellets made of a homogeneous alloy of hafnium and a relatively weak absorber material, with the percentage of hafnium chosen to obtain the desired reactivity worth.

Miller, John V. (Munhall, PA); Carlson, William R. (Scott Township, Allegheny County, PA); Yarbrough, Michael B. (Hempfield Township, Westmoreland County, PA)

1991-01-01T23:59:59.000Z

148

An Ad-Hoc Method for Obtaining chi**2 Values from Unbinned Maximum Likelihood Fits  

E-Print Network [OSTI]

A common goal in an experimental physics analysis is to extract information from a reaction with multi-dimensional kinematics. The preferred method for such a task is typically the unbinned maximum likelihood method. In fits using this method, the likelihood is a goodness-of-fit quantity in that it effectively discriminates between available hypotheses; however, it does not provide any information as to how well the best hypothesis describes the data. In this paper, we present an {\\em ad-hoc} procedure for obtaining chi**2/n.d.f. values from unbinned maximum likelihood fits. This method does not require binning the data, making it very applicable to multi-dimensional problems.

M. Williams; C. A. Meyer

2008-06-30T23:59:59.000Z

149

The Casimir effect: from quantum to critical fluctuations  

E-Print Network [OSTI]

The Casimir effect in quantum electrodynamics (QED) is perhaps the best-known example of fluctuation-induced long-ranged force acting on objects (conducting plates) immersed in a fluctuating medium (quantum electromagnetic field in vacuum). A similar effect emerges in statistical physics, where the force acting, e.g., on colloidal particles immersed in a binary liquid mixture is affected by the classical thermal fluctuations occurring in the surrounding medium. The resulting Casimir-like force acquires universal features upon approaching a critical point of the medium and becomes long-ranged at criticality. In turn, this universality allows one to investigate theoretically the temperature dependence of the force via representative models and to stringently test the corresponding predictions in experiments. In contrast to QED, the Casimir force resulting from critical fluctuations can be easily tuned with respect to strength and sign by surface treatments and temperature control. We present some recent advances in the theoretical study of the universal properties of the critical Casimir force arising in thin films. The corresponding predictions compare very well with the experimental results obtained for wetting layers of various fluids. We discuss how the Casimir force between a colloidal particle and a planar wall immersed in a binary liquid mixture has been measured with femto-Newton accuracy, comparing these experimental results with the corresponding theoretical predictions.

Andrea Gambassi

2008-12-04T23:59:59.000Z

150

Controlling colloidal phase transitions with critical Casimir forces  

E-Print Network [OSTI]

The critical Casimir effect provides a thermodynamic analogue of the well-known quantum mechanical Casimir effect. It acts between two surfaces immersed in a critical binary liquid mixture, and results from the confinement of concentration fluctuations of the solvent. Unlike the quantum mechanical effect, the magnitude and range of this attraction can be adjusted with temperature via the solvent correlation length, thus offering new opportunities for the assembly of nano and micron-scale structures. Here, we demonstrate the active assembly control of equilibrium phases using critical Casimir forces. We guide colloidal particles into analogues of molecular liquid and solid phases via exquisite control over their interactions. By measuring the critical Casimir particle pair potential directly from density fluctuations in the colloidal gas, we obtain insight into liquefaction at small scales: We apply the Van der Waals model of molecular liquefaction and show that the colloidal gas-liquid condensation is accurately described by the Van der Waals theory, even on the scale of a few particles. These results open up new possibilities in the active assembly control of micro and nanostructures.

Van Duc Nguyen; Suzanne Faber; Zhibing Hu; Gerard H. Wegdam; Peter Schall

2013-02-20T23:59:59.000Z

151

Criticality safety of an annular tank for fissile solution  

SciTech Connect (OSTI)

Experiments performed to determine the criticality safety of annular tanks for storing fissile solutions are described. Six annular tanks were built in four nesting sizes to obtain experimental criticality data which could be used to validate computer codes employed in the design of such a safe storage system for an industrial plant. Each tank had an annular solution region thickness of 38 mm. The height of this region was 2.13 m, held 0.3 m off the floor by a stainless steel skirting. Walls were 6.4 mm-thick type 304L stainless steel. The uranyl nitrate solution contained 357 g U/l and had a density of 1.5 kg/m/sup 3/. The uranium was enriched to 93.2% /sup 235/U with other isotopes: 5.4% /sup 238/U, 1.0% /sup 234/U, and 0.4% /sup 236/U. The solution contained 0.5 molar nitric acid and a total impurity content of less than 1500 ppM. Important neutron absorbers, boron and cadmium, averaged 10 ppM and 30 ppM, respectively. Boron-loaded concrete and boron-loaded plaster were selected for the neutron moderator/absorber interior to the annular tank. Three configurations of tanks and reflector were taken to criticality and are reported. The critical uranium solution height in all tanks containing solution as a function of boron content in earthen interior material, tank array configuration, and other variables. (LCL)

Rothe, R.E.

1981-01-01T23:59:59.000Z

152

Finite quantum dissipation: the challenge of obtaining specific heat  

E-Print Network [OSTI]

We consider a free particle coupled with finite strength to a bath and investigate the evaluation of its specific heat. A harmonic oscillator bath of Drude type with cutoff frequency omega_D is employed to model an ohmic friction force with dissipation strength gamma. Two scenarios for obtaining specific heat are presented. The first one uses the measurement of the kinetic energy of the free particle while the second one is based on the reduced partition function. Both descriptions yield results which are consistent with the Third Law of thermodynamics. Nevertheless, the two methods produce different results that disagree even in their leading quantum corrections at high temperatures. We also consider the regime where the cutoff frequency is smaller than the friction strength, i.e. omega_D1.

Hänggi, Peter; Talkner, Peter

2008-01-01T23:59:59.000Z

153

The Critical Rayleigh Number in Horizontal Convection for $\\Pran=1$  

E-Print Network [OSTI]

We report the numerical simulations of the horizontal convection within a rectangle cavity tank at high Rayleigh numbers. The physical solution of horizontal convection depends the space resolution of the meshes. The mesh number $N$ is proportion to $Ra^{1/3}$. The unstable numerical solutions are obtained as $Npower law also implies that the space resolution is dominated by the viscosity and heat diffusion. It implies that the special resolution is dominated by viscosity and thermal diffusivity but the length of the tank. Moreover, there is a Hopf bifurcation from steady solutions to unsteady solutions and the critical Rayleigh number $Ra_c$ is obtained as $5.53\\times 10^8obtained value.

Sun, L; Sun, De-Jun; Sun, Liang

2007-01-01T23:59:59.000Z

154

Crosscutting Research | Critical Materials Institute  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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155

Privacy Notice | Critical Materials Institute  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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156

Security Notice | Critical Materials Institute  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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157

Latest News | Critical Materials Institute  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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158

Elements of a nuclear criticality safety program  

SciTech Connect (OSTI)

Nuclear criticality safety programs throughout the United States are quite successful, as compared with other safety disciplines, at protecting life and property, especially when regarded as a developing safety function with no historical perspective for the cause and effect of process nuclear criticality accidents before 1943. The programs evolved through self-imposed and regulatory-imposed incentives. They are the products of conscientious individuals, supportive corporations, obliged regulators, and intervenors (political, public, and private). The maturing of nuclear criticality safety programs throughout the United States has been spasmodic, with stability provided by the volunteer standards efforts within the American Nuclear Society. This presentation provides the status, relative to current needs, for nuclear criticality safety program elements that address organization of and assignments for nuclear criticality safety program responsibilities; personnel qualifications; and analytical capabilities for the technical definition of critical, subcritical, safety and operating limits, and program quality assurance.

Hopper, C.M.

1995-07-01T23:59:59.000Z

159

Abrasion Testing of Critical Components of Hydrokinetic Devices  

SciTech Connect (OSTI)

The objective of the Abrasion Testing of Critical Components of Hydrokinetic Devices (Project) was to test critical components of hydrokinetic devices in waters with high levels of suspended sediment – information that is widely applicable to the hydrokinetic industry. Tidal and river sites in Alaska typically have high suspended sediment concentrations. High suspended sediment also occurs in major rivers and estuaries throughout the world and throughout high latitude locations where glacial inputs introduce silt into water bodies. In assessing the vulnerability of technology components to sediment induced abrasion, one of the greatest concerns is the impact that the sediment may have on device components such as bearings and seals, failures of which could lead to both efficiency loss and catastrophic system failures.

Worthington, Monty [ORPC Alaska] [ORPC Alaska; Ali, Muhammad [Ohio University] [Ohio University; Ravens, Tom [University of Alaska Anchorage] [University of Alaska Anchorage

2013-12-06T23:59:59.000Z

160

Critical shear stresses in cohesive soils  

E-Print Network [OSTI]

CRITICAL SHEAR STRESSES IN COHESIVE SOILS A Thesis By ROBERT JAMES REKTORIK Approved as to style and content by: (Committee hairm g- c& ( ead of epartm ( mber) (Member) January 1964 ACKNOWLEDGMENTS I wish to acknowledge the guidance..., and Dummy Soil Sample 17 Typical Soil Samples after Scour Test, San Saba Clay 25 Typical Soil Samples after Scour Test, Houston Black Clay, K177 Regression of Critical Shearing Force on Per Cent Moisture . 31 10. Regression of Critical Shearing Force...

Rektorik, Robert James

1964-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "obtain information critical" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Criticality Safety Evaluation of a LLNL Training Assembly for Criticality Safety (TACS)  

SciTech Connect (OSTI)

Hands-on experimental training in the physical behavior of multiplying systems is one of ten key areas of training required for practitioners to become qualified in the discipline of criticality safety as identified in DOE-STD-1135-99, ''Guidance for Nuclear Criticality Safety Engineer Training and Qualification''. This document is a criticality safety evaluation of the training activities (or operations) associated with HS-3200, ''Laboratory Class for Criticality Safety''. These activities utilize the Training Assembly for Criticality Safety (TACS). The original intent of HS-3200 was to provide LLNL fissile material handlers with a practical hands-on experience as a supplement to the academic training they receive biennially in HS-3100, ''Fundamentals of Criticality Safety'', as required by ANSI/ANS-8.20-1991, ''Nuclear Criticality Safety Training''. HS-3200 is to be enhanced to also address the training needs of nuclear criticality safety professionals under the auspices of the NNSA Nuclear Criticality Safety Program.

Heinrichs, D P

2006-06-26T23:59:59.000Z

162

Wireless System Considerations When Implementing NERC Critical...  

Broader source: Energy.gov (indexed) [DOE]

American Electric Reliability Corporation (NERC) Critical Infrastructure Protection (CIP) Standards (CIP-002 through CIP-009). The increased use of wireless technologies and...

163

209-E Critical Mass Laboratory - Hanford Site  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and controlled. Criticality experiments, where a nuclear chain reaction becomes self-sustaining, were also conducted. In addition, 209-E was a research facility where methods of...

164

Critical Mission Support Through Energy Security  

Broader source: Energy.gov [DOE]

Presentation covers the critical mission support through energy security and is given at the Spring 2010 Federal Utility Partnership Working Group (FUPWG) meeting in Rapid City, South Dakota.

165

Guide to Critical Infrastructure Protection Cyber Vulnerability...  

Broader source: Energy.gov (indexed) [DOE]

Implementing NERC Critical Infrastructure Protection Standards New No-Cost ANTFARM Tool Maps Control System Networks to Help Implement Cyber Security Standards "Cybersecurity for...

166

Information California,  

E-Print Network [OSTI]

Ge, Sridevi Parise, Padhraic Smyth Information and Computer Science University of California, Irvine

Smyth, Padhraic

167

INFORMATION & COMMUNICATION  

E-Print Network [OSTI]

of information and communication technologies in development that draws on Amartya Sen's capabilities approach

Jackson, Daniel

168

Finite quantum dissipation: the challenge of obtaining specific heat  

E-Print Network [OSTI]

We consider a free particle coupled with finite strength to a bath and investigate the evaluation of its specific heat. A harmonic oscillator bath of Drude type with cutoff frequency omega_D is employed to model an ohmic friction force with dissipation strength gamma. Two scenarios for obtaining specific heat are presented. The first one uses the measurement of the kinetic energy of the free particle while the second one is based on the reduced partition function. Both descriptions yield results which are consistent with the Third Law of thermodynamics. Nevertheless, the two methods produce different results that disagree even in their leading quantum corrections at high temperatures. We also consider the regime where the cutoff frequency is smaller than the friction strength, i.e. omega_Dheat based on the thermodynamic prescription becomes negative. This anomaly is rooted in an ill-defined density of states of the damped free particle which assumes unphysical negative values when gamma/omega_D>1.

Peter Hänggi; Gert-Ludwig Ingold; Peter Talkner

2008-05-26T23:59:59.000Z

169

About the determination of critical exponents related to possible phase transitions in nuclear fragmentation  

E-Print Network [OSTI]

We introduce a method based on the finite size scaling assumption which allows to determine numerically the critical point and critical exponents related to observables in an infinite system starting from the knowledge of the observables in finite systems. We apply the method to bond percolation in 2 dimensions and compare the results obtained when the bond probability p or the fragment multiplicity m are chosen as the relevant parameter.

B. Elattari; J. Richert; P. Wagner

1997-05-30T23:59:59.000Z

170

Tennessee Water Resources Information Act (Tennessee)  

Broader source: Energy.gov [DOE]

The Tennessee Water Resources Information Act is designed to prevent the lowering of the ground water table by requiring that adequate information is obtained to document current demand for water...

171

Noise correction of turbulent spectra obtained from Acoustic Doppler Velocimeters  

SciTech Connect (OSTI)

Accurately estimated auto-spectral density functions are essential for characterization of turbulent flows, and they also have applications in computational fluid dynamics modeling, site and inflow characterization for hydrokinetic turbines, and inflow turbulence generation. The Acoustic Doppler Velocimeter (ADV) provides single-point temporally resolved data, that are used to characterize turbulent flows in rivers, seas, and oceans. However, ADV data are susceptible to contamination from various sources, including instrument noise, which is the intrinsic limit to the accuracy of acoustic velocity measurements. Due to the presence of instrument noise, the spectra obtained are altered at high frequencies. The focus of this study is to develop a robust and effective method for accurately estimating auto-spectral density functions from ADV data by reducing or removing the spectral contribution derived from instrument noise. For this purpose, the “Noise Auto-Correlation” (NAC) approach was developed, which exploits the correlation properties of instrument noise to identify and remove its contribution from spectra. The spectra estimated using the NAC approach exhibit increased fidelity and a slope of -5/3 in the inertial range, which is typically observed for turbulent flows. Finally, this study also compares the effectiveness of low-pass Gaussian filters in removing instrument noise with that of the NAC approach. For the data used in this study, both the NAC and Gaussian filter approaches are observed to be capable of removing instrument noise at higher frequencies from the spectra. However, the NAC results are closer to the expected frequency power of -5/3 in the inertial sub-range.

Durgesh, Vibhav; Thomson, Jim; Richmond, Marshall C.; Polagye, Brian

2014-03-02T23:59:59.000Z

172

Critical temperature for the nuclear liquid-gas phase transition (from multifragmentation and fission)  

E-Print Network [OSTI]

Critical temperature Tc for the nuclear liquid-gas phase transition is stimated both from the multifragmentation and fission data. In the first case,the critical temperature is obtained by analysis of the IMF yields in p(8.1 GeV)+Au collisions within the statistical model of multifragmentation (SMM). In the second case, the experimental fission probability for excited 188Os is compared with the calculated one with Tc as a free parameter. It is concluded for both cases that the critical temperature is higher than 16 MeV.

V. A. Karnaukhov; H. Oeschler; A. Budzanowski; S. P. Avdeyev; A. S. Botvina; E. A. Cherepanov; W. Karcz; V. V. Kirakosyan; P. A. Rukoyatkin; I. Skwirczynska; E. Norbeck

2008-01-29T23:59:59.000Z

173

Information Management and Supporting Documentation  

Broader source: Energy.gov [DOE]

The Paperwork Reduction Act (PRA) of 1995 requires each Federal agency to seek and obtain approval from the Office of Management and Budget (OMB) before undertaking a collection of information...

174

Critical Materials For Sustainable Energy Applications  

E-Print Network [OSTI]

Critical Materials For Sustainable Energy Applications September 2011 Resnick Institute Report C in the generation, storage, transmission, conversion and conservation of energy. + Institute Leadership Harry://resnick.caltech.edu Pasadena, CA. USA + #12;Critical Materials For Sustainable Energy Applications California Institute

175

Critical aspects of hierarchical protein folding  

E-Print Network [OSTI]

We argue that the first order folding transitions of proteins observed at physiological chemical conditions end in a critical point for a given temperature and chemical potential of the surrounding water. We investigate this critical point using a hierarchical Hamiltonian and determine its universality class. This class differs qualitatively from those of other known models.

Alex Hansen; Mogens H. Jensen; Kim Sneppen; Giovanni Zocchi

1998-01-13T23:59:59.000Z

176

Southeastern Colorado Survey of Critical Biological Resources  

E-Print Network [OSTI]

Southeastern Colorado Survey of Critical Biological Resources 2007 #12;ii #12;Southeastern Colorado Survey of Critical Biological Resources Prepared for: Colorado Cattleman's Agricultural Land Trust 8833 Ralston Road Arvada, CO 80002 Great Outdoors Colorado 1600 Broadway, Suite 1650 Denver, CO 80202 Colorado

177

Electrorecycling of Critical and Value Metals from Mobile Electronics  

SciTech Connect (OSTI)

Mobile electronic devices such as smart phones and tablets are a significant source of valuable metals that should be recycled. Each year over a billion devices are sold world-wide and the average life is only a couple years. Value metals in phones are gold, palladium, silver, copper, cobalt and nickel. Devices now contain increasing amounts of rare earth elements (REE). In recent years the supply chain for REE has moved almost exclusively to China. They are contained in displays, speakers and vibrators within the devices. By US Department of Energy (DOE) classification, specific REEs (Nd, Dy, Eu, Tb and Y) are considered critical while others (Ce, La and Pr) are deemed near critical. Effective recycling schemes should include the recovery of these critical materials. By including more value materials in a recovery scheme, more value can be obtained by product diversification and less waste metals remains to be disposed of. REEs are mined as a group such that when specific elements become critical significantly more ore must be processed to capture the dilute but valuable critical elements. Targeted recycling of items containing the more of the less available critical materials could address their future criticality. This presentation will describe work in developing aqueous electrochemistry-based schemes for recycling metals from scrap mobile electronics. The electrorecycling process generates oxidizing agents at an anode while reducing dissolved metals at the cathode. E vs pH diagrams and metals dissolution experiments are used to assess effectiveness of various solution chemistries. Although several schemes were envisioned, a two stages process has been the focus of work: 1) initial dissolution of Cu, Sn, Ag and magnet materials using Fe+3 generated in acidic sulfate and 2) final dissolution of Pd and Au using Cl2 generated in an HCl solution. Experiments were performed using simulated metal mixtures. Both Cu and Ag were recovered at ~ 97% using Fe+3 while leaving Au and Ag intact. REE were extracted from the dissolved mixture using conventional methods. A discussion of future research directions will be discussed.

Tedd E. Lister; Peming Wang; Andre Anderko

2014-09-01T23:59:59.000Z

178

Information Geometry and the Renormalization Group  

E-Print Network [OSTI]

Information theoretic geometry near critical points in classical and quantum systems is well understood for exactly solvable systems. Here we show that real space renormalization group equations can be used to construct the information metric and its associated quantities near criticality, even for systems that cannot be exactly solved. We study this metric in various cases and establish its scaling properties in several generic examples. Scaling relations on the parameter manifold involving scalar quantities are studied, and scaling exponents are identified. The meaning of the scalar curvature and the invariant geodesic distance in information geometry is established and substantiated from a renormalization group perspective.

Reevu Maity; Subhash Mahapatra; Tapobrata Sarkar

2015-03-13T23:59:59.000Z

179

CRITICALITY CURVES FOR PLUTONIUM HYDRAULIC FLUID MIXTURES  

SciTech Connect (OSTI)

This Calculation Note performs and documents MCNP criticality calculations for plutonium (100% {sup 239}Pu) hydraulic fluid mixtures. Spherical geometry was used for these generalized criticality safety calculations and three geometries of neutron reflection are: {sm_bullet}bare, {sm_bullet}1 inch of hydraulic fluid, or {sm_bullet}12 inches of hydraulic fluid. This document shows the critical volume and critical mass for various concentrations of plutonium in hydraulic fluid. Between 1 and 2 gallons of hydraulic fluid were discovered in the bottom of HA-23S. This HA-23S hydraulic fluid was reported by engineering to be Fyrquel 220. The hydraulic fluid in GLovebox HA-23S is Fyrquel 220 which contains phosphorus. Critical spherical geometry in air is calculated with 0 in., 1 in., or 12 inches hydraulic fluid reflection.

WITTEKIND WD

2007-10-03T23:59:59.000Z

180

Critical phenomena in N=2* plasma  

E-Print Network [OSTI]

We use gauge theory/string theory correspondence to study finite temperature critical behaviour of mass deformed N=4 SU(N) supersymmetric Yang-Mills theory at strong coupling, also known as N=2* gauge theory. For certain range of the mass parameters, N=2* plasma undergoes a second-order phase transition. We compute all the static critical exponents of the model and demonstrate that the transition is of the mean-field theory type. We show that the dynamical critical exponent of the model is z=0, with multiple hydrodynamic relaxation rates at criticality. We point out that the dynamical critical phenomena in N=2* plasma is outside the dynamical universality classes established by Hohenberg and Halperin.

A. Buchel; C. Pagnutti

2010-10-16T23:59:59.000Z

Note: This page contains sample records for the topic "obtain information critical" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Infrared Critical Exponents in Finite-Temperature Coulomb Gauge QCD  

E-Print Network [OSTI]

We investigate the infrared critical exponents of Coulomb gauge Yang-Mills theory in the limit of very high temperature. This allows us to focus on one scale (the spatial momentum) since all but the lowest Matsubara frequency decouple from the deep infrared. From the first-order Dyson-Schwinger equations in a bare-vertex truncation we obtain infrared exponents which correspond to confining or overconfining (yet mathematically well-defined) solutions. For three spatial dimensions the exponents are close to what is expected for a linearly rising color-Coulomb potential.

Klaus Lichtenegger; Daniel Zwanziger

2009-11-28T23:59:59.000Z

182

Bibliography for nuclear criticality accident experience, alarm systems, and emergency management  

SciTech Connect (OSTI)

The characteristics, detection, and emergency management of nuclear criticality accidents outside reactors has been an important component of criticality safety for as long as the need for this specialized safety discipline has been recognized. The general interest and importance of such topics receives special emphasis because of the potentially lethal, albeit highly localized, effects of criticality accidents and because of heightened public and regulatory concerns for any undesirable event in nuclear and radiological fields. This bibliography lists references which are potentially applicable to or interesting for criticality alarm, detection, and warning systems; criticality accident emergency management; and their associated programs. The lists are annotated to assist bibliography users in identifying applicable: industry and regulatory guidance and requirements, with historical development information and comments; criticality accident characteristics, consequences, experiences, and responses; hazard-, risk-, or safety-analysis criteria; CAS design and qualification criteria; CAS calibration, maintenance, repair, and testing criteria; experiences of CAS designers and maintainers; criticality accident emergency management (planning, preparedness, response, and recovery) requirements and guidance; criticality accident emergency management experience, plans, and techniques; methods and tools for analysis; and additional bibliographies.

Putman, V.L.

1995-09-01T23:59:59.000Z

183

SCHOLARSHIP INFORMATION  

E-Print Network [OSTI]

STUDENT LEADERSHIP SCHOLARSHIP INFORMATION & APPLICATION #12;Sentry Insurance is pleased, creativity and dedication to lead all sectors of society. Sentry believes that by supporting the education for providing scholarship information to school counselors, for actively recruiting students who meet

184

The Use of Catalysts in Near-Critical Water Processing  

SciTech Connect (OSTI)

The use of heterogeneous catalysts in near-critical water processing provides many challenges of material stability in addition to the normal questions of chemical activity. Conventional catalyst materials developed in traditional organic chemistry or petroleum chemistry applications provide a source of information of materials with the required activities but often without the required stability when used in hot liquid water. The importance of the use of catalysts in near-critical water processing plays a particularly crucial role for the development of renewable fuels and chemicals based on biomass feedstocks. Stability issues include both those related to the catalytic metal and also to the catalyst support material. In fact, the stability of the support is the most likely concern when using conventional catalyst formulations in near-critical water processing. Processing test results are used to show important design parameters for catalyst formulations for use in wet biomass gasification in high-pressure water and in catalytic hydrogenations in water for production of value-added chemical products from biomass in the biorefinery concept. Analytical methods including powder x-ray diffraction for crystallite size and composition determination, surface area and porosity measurements, and elemental analysis have all been used to quantify differences in catalyst materials before and after use. By these methods both the chemical and physical stability of heterogeneous catalysts can be verified.

Elliott, Douglas C.

2005-06-26T23:59:59.000Z

185

New enhancements to SCALE for criticality safety analysis  

SciTech Connect (OSTI)

As the speed, available memory, and reliability of computer hardware increases and the cost decreases, the complexity and usability of computer software will increase, taking advantage of the new hardware capabilities. Computer programs today must be more flexible and user friendly than those of the past. Within available resources, the SCALE staff at Oak Ridge National Laboratory (ORNL) is committed to upgrading its computer codes to keep pace with the current level of technology. This paper examines recent additions and enhancements to the criticality safety analysis sections of the SCALE code package. These recent additions and enhancements made to SCALE can be divided into nine categories: (1) new analytical computer codes, (2) new cross-section libraries, (3) new criticality search sequences, (4) enhanced graphical capabilities, (5) additional KENO enhancements, (6) enhanced resonance processing capabilities, (7) enhanced material information processing capabilities, (8) portability of the SCALE code package, and (9) other minor enhancements, modifications, and corrections to SCALE. Each of these additions and enhancements to the criticality safety analysis capabilities of the SCALE code system are discussed below.

Hollenbach, D.F.; Bowman, S.M.; Petrie, L.M.; Parks, C.V. [Oak Ridge National Lab., TN (United States). Computational Physics and Engineering Div.

1995-09-01T23:59:59.000Z

186

A critical view on transport and entanglement in models of photosynthesis  

E-Print Network [OSTI]

We revisit critically the recent claims, inspired by quantum optics and quantum information, that there is entanglement in the biological pigment protein complexes, and that it is responsible for the high transport efficiency. While unexpectedly long coherence times were experimentally demonstrated, the existence of entanglement is, at the moment, a purely theoretical conjecture; it is this conjecture that we analyze. As demonstrated by a toy model, a similar transport phenomenology can be obtained without generating entanglement. Furthermore, we also argue that even if entanglement does exist, it is purely incidental and seems to plays no essential role for the transport efficiency. We emphasize that our paper is not a proof that entanglement does not exist in light-harvesting complexes - this would require a knowledge of the system and its parameters well beyond the state of the art. Rather, we present a counter-example to the recent claims of entanglement, showing that the arguments, as they stand at the moment, are not sufficiently justified and hence cannot be taken as proof for the existence of entanglement, let alone of its essential role, in the excitation transport.

Markus Tiersch; Sandu Popescu; Hans J. Briegel

2012-08-23T23:59:59.000Z

187

Critical configurations of planar robot arms  

E-Print Network [OSTI]

It is known that a closed polygon P is a critical point of the oriented area function if and only if P is a cyclic polygon, that is, $P$ can be inscribed in a circle. Moreover, there is a short formula for the Morse index. Going further in this direction, we extend these results to the case of open polygonal chains, or robot arms. We introduce the notion of the oriented area for an open polygonal chain, prove that critical points are exactly the cyclic configurations with antipodal endpoints and derive a formula for the Morse index of a critical configuration.

Khimshiashvili, G; Siersma, D; Zhukova, A

2012-01-01T23:59:59.000Z

188

U.S. Department of Energy Critical Materials Strategy  

SciTech Connect (OSTI)

This report examines the role of rare earth metals and other materials in the clean energy economy. It was prepared by the U.S. Department of Energy (DOE) based on data collected and research performed during 2010. Its main conclusions include: (a) Several clean energy technologies -- including wind turbines, electric vehicles, photovoltaic cells and fluorescent lighting -- use materials at risk of supply disruptions in the short term. Those risks will generally decrease in the medium and long term. (b) Clean energy technologies currently constitute about 20 percent of global consumption of critical materials. As clean energy technologies are deployed more widely in the decades ahead, their share of global consumption of critical materials will likely grow. (c) Of the materials analyzed, five rare earth metals (dysprosium, neodymium, terbium, europium and yttrium), as well as indium, are assessed as most critical in the short term. For this purpose, 'criticality' is a measure that combines importance to the clean energy economy and risk of supply disruption. (d) Sound policies and strategic investments can reduce the risk of supply disruptions, especially in the medium and long term. (e) Data with respect to many of the issues considered in this report are sparse. In the report, DOE describes plans to (i) develop its first integrated research agenda addressing critical materials, building on three technical workshops convened by the Department during November and December 2010; (ii) strengthen its capacity for information-gathering on this topic; and (iii) work closely with international partners, including Japan and Europe, to reduce vulnerability to supply disruptions and address critical material needs. DOE will work with other stakeholders -- including interagency colleagues, Congress and the public -- to shape policy tools that strengthen the United States' strategic capabilities. DOE also announces its plan to develop an updated critical materials strategy, based upon additional events and information, by the end of 2011.DOE's strategy with respect to critical materials rests on three pillars. First, diversified global supply chains are essential. To manage supply risk, multiple sources of materials are required. This means taking steps to facilitate extraction, processing and manufacturing here in the United States, as well as encouraging other nations to expedite alternative supplies. In all cases, extraction and processing should be done in an environmentally sound manner. Second, substitutes must be developed. Research leading to material and technology substitutes will improve flexibility and help meet the material needs of the clean energy economy. Third, recycling, reuse and more efficient use could significantly lower world demand for newly extracted materials. Research into recycling processes coupled with well-designed policies will help make recycling economically viable over time.The scope of this report is limited. It does not address the material needs of the entire economy, the entire energy sector or even all clean energy technologies. Time and resource limitations precluded a comprehensive scope. Among the topics that merit additional research are the use of rare earth metals in catalytic converters and in petroleum refining. These topics are discussed briefly in Chapter 2.

Bauer, D.; Diamond, D.; Li, J.; Sandalow, D.; Telleen, P.; Wanner, B.

2010-12-01T23:59:59.000Z

189

Critical Areas of State Concern (Maryland)  

Broader source: Energy.gov [DOE]

This legislation designates the Chesapeake Bay, other Atlantic Coastal Bays, and their tributaries and adjacent lands as critical areas of state concern. It is state policy to protect these areas...

190

Critical eigenvalue in LMFBRs: a physics assessment  

SciTech Connect (OSTI)

This paper summarizes recent work to put the analysis of past critical eigenvalue measurements from the US critical experiments program on a consistent basis. The integral data base includes 53 configurations built in 11 ZPPR assemblies which simulate mixed oxide LMFBRs. Both conventional and heterogeneous designs representing 350, 700, and 900 MWe sizes and with and without simulated control rods and/or control rod positions have been studied. The review of the integral data base includes quantitative assessment of experimental uncertainties in the measured excess reactivity. Analyses have been done with design level and higher-order methods using ENDF/B-IV data. Comparisons of these analyses with the experiments are used to generate recommended bias factors for criticality predictions. Recommended methods for analysis of LMFBR fast critical assemblies and LMFBR design calculations are presented. Unresolved issues and areas which require additional experimental or analytical study are identified.

McKnight, R.D.; Collins, P.J.; Olsen, D.N.

1984-01-01T23:59:59.000Z

191

Neutron absorbing coating for nuclear criticality control  

DOE Patents [OSTI]

A neutron absorbing coating for use on a substrate, and which provides nuclear criticality control is described and which includes a nickel, chromium, molybdenum, and gadolinium alloy having less than about 5% boron, by weight.

Mizia, Ronald E. (Idaho Falls, ID); Wright, Richard N. (Idaho Falls, ID); Swank, William D. (Idaho Falls, ID); Lister, Tedd E. (Idaho Falls, ID); Pinhero, Patrick J. (Idaho Falls, ID)

2007-10-23T23:59:59.000Z

192

Validation studies using joint USDOE/PNC critical experiments  

SciTech Connect (OSTI)

Validation studies have been performed in the United States and Japan using the SCALE-2 computer code system with benchmark data obtained from 46 critical experiments. The experiments spanned the range of neutron spectra from a very undermoderated condition (H/Pu ratio = 22) to a very overmoderated condition (H/Pu ratio = 2220). The experiments are divided into four sets: (1) heterogeneous mixed-oxide fuel pin arrays moderated by organic and aqueous solutions, (2) limiting critical concentration experiments, (3) basic cylinder and slab geometries with various reflection conditions, and (4) annular cylinder with various fixed-geometry poisons. Based on computations performed at the Oak Ridge National Laboratory (ORNL) with the KENO code and a 27 energy-group cross-section library, the average calculated k-effective for the 46 experiments was found to be 1.004. Calculated k-effectives ranged from 0.991 to 1.018, and the standard deviation of these results was 0.006. The Power Reactor and Nuclear Fuel Development Corporation (PNC) staff have obtained similar k-effective results in their validation studies. The good agreement between experiment and calculation gives confidence that the calculation methods and cross-section data can be applied to similar plant conditions. 10 refs., 1 fig., 4 tabs.

Smolen, G.R.; Whitesides, G.E.; Matsumoto, T.; Funabashi, H.

1987-01-01T23:59:59.000Z

193

E-Print Network 3.0 - adult information seeking Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

them achieve this: Give them accurate information about... for independence, seeking help from peers and adults other than their parents and expressing critical attitudes......

194

Quantum critical benchmark for density functional theory  

E-Print Network [OSTI]

Two electrons at the threshold of ionization represent a severe test case for electronic structure theory. A pseudospectral method yields a very accurate density of the two-electron ion with nuclear charge close to the critical value. Highly accurate energy components and potentials of Kohn-Sham density functional theory are given, as well as a useful parametrization of the critical density. The challenges for density functional approximations and the strength of correlation are also discussed.

Paul E. Grabowski; Kieron Burke

2014-08-09T23:59:59.000Z

195

Mathematical, Information and Computational Sciences Mathematical, Information  

E-Print Network [OSTI]

and Computational Sciences #12;High Performance Computing, Collaboration and Networks- Critical for DOE Science

196

Nuclear criticality safety experiments, calculations, and analyses: 1958 to 1982. Volume 1. Lookup tables  

SciTech Connect (OSTI)

This compilation contains 688 complete summaries of papers on nuclear criticality safety as presented at meetings of the American Nuclear Society (ANS). The selected papers contain criticality parameters for fissile materials derived from experiments and calculations, as well as criticality safety analyses for fissile material processing, transport, and storage. The compilation was developed as a component of the Nuclear Criticality Information System (NCIS) now under development at the Lawrence Livermore National Laboratory. The compilation is presented in two volumes: Volume 1 contains a directory to the ANS Transaction volume and page number where each summary was originally published, the author concordance, and the subject concordance derived from the keyphrases in titles. Volume 2 contains - in chronological order - the full-text summaries, reproduced here by permission of the American Nuclear Society from their Transactions, volumes 1-41.

Koponen, B.L.; Hampel, V.E.

1982-10-21T23:59:59.000Z

197

Information Technology: American National Standard for Information  

E-Print Network [OSTI]

Information Technology: American National Standard for Information Systems-- Data Format-271 Information Technology: American National Standard for Information Systems-- Data Format for the Interchange Sponsored by Information Access Division Information Technology Laboratory National Institute of Standards

198

Information Technology: American National Standard for Information  

E-Print Network [OSTI]

Information Technology: American National Standard for Information Systems-- Data Format 500-275 Information Technology: American National Standard for Information Systems-- Data Format Coleman, and Patrice Yuh, Editors Sponsored by Information Access Division Information Technology

199

The use of particle tracking to obtain planar velocity measurements in an unsteady laminar diffusion flame  

SciTech Connect (OSTI)

An investigation of the flame-flow interaction in an unsteady laminar co-flowing jet diffusion flame is underway. The flame is made periodic by acoustic excitation of the fuel stream. The objective of the research is to develop a better understanding of the relationship between the flowfield and combustion process by superimposing measurements of the vector velocity field on planar measurements of reactive and passive scalars. In this connection a technique is being developed to obtain instantaneous two-dimensional velocity measurements from multiply-exposed photographic images of scattered light from speed particles in the flow. The technique involves simple photographic images taken at a right angle to a thin laser sheet on the diametric center of the jet. The illumination source is pulsed Cu vapor laser. The important issues considered have included the particle type and size as they relate to the particle's ability to follow the flow and to withstand combustion temperatures. Also of concern is the effect of thermophoretic forces on the measurement accuracy. Both Al/sub 2/O/sub 3/ and TiO/sub 2/ have been used successfully and detailed information about the size and geometry of TiO/sub 2/ particles has been obtained through scanning electron microscope photographs. The TiO/sub 2/ particles have been produced from the reaction of TiCl/sub 4/ and water. The technique has been successfully demonstrated by measuring a cold laminar jet exit velocity profile. Also, good particle images have been obtained in a pulsed diffusion flame.

Lewis, G.S.; Cantwell, B.J.; Lecuona, A.

1987-01-01T23:59:59.000Z

200

CRITICAL MESSAGE INTEGRITY OVER A SHARED NETWORK 1 1 INTRODUCTION  

E-Print Network [OSTI]

, the simplest way to assure system safety is to isolate critical and non-critical components to prevent defects often contain a mixture of critical and non-critical software processes that need to communicate with each other. Critical software is "software whose failure could have an impact on safety, or could cause

Koopman, Philip

Note: This page contains sample records for the topic "obtain information critical" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Assessing Vulnerabilities, Risks, and Consequences of Damage to Critical Infrastructure  

SciTech Connect (OSTI)

Since the publication of 'Critical Foundations: Protecting America's Infrastructure,' there has been a keen understanding of the complexity, interdependencies, and shared responsibility required to protect the nation's most critical assets that are essential to our way of life. The original 5 sectors defined in 1997 have grown to 18 Critical Infrastructures and Key Resources (CIKR), which are discussed in the 2009 National Infrastructure Protection Plan (NIPP) and its supporting sector-specific plans. The NIPP provides the structure for a national program dedicated to enhanced protection and resiliency of the nation's infrastructure. Lawrence Livermore National Laboratory (LLNL) provides in-depth, multi-disciplinary assessments of threat, vulnerability, and consequence across all 18 sectors at scales ranging from specific facilities to infrastructures spanning multi-state regions, such as the Oil and Natural Gas (ONG) sector. Like many of the CIKR sectors, the ONG sector is comprised of production, processing, distribution, and storage of highly valuable and potentially dangerous commodities. Furthermore, there are significant interdependencies with other sectors, including transportation, communication, finance, and government. Understanding the potentially devastating consequences and collateral damage resulting from a terrorist attack or natural event is an important element of LLNL's infrastructure security programs. Our work began in the energy sector in the late 1990s and quickly expanded other critical infrastructure sectors. We have performed over 600 physical assessments with a particular emphasis on those sectors that utilize, store, or ship potentially hazardous materials and for whom cyber security is important. The success of our approach is based on building awareness of vulnerabilities and risks and working directly with industry partners to collectively advance infrastructure protection. This approach consists of three phases: The Pre-Assessment Phase brings together infrastructure owners and operators to identify critical assets and help the team create a structured information request. During this phase, we gain information about the critical assets from those who are most familiar with operations and interdependencies, making the time we spend on the ground conducting the assessment much more productive and enabling the team to make actionable recommendations. The Assessment Phase analyzes 10 areas: Threat environment, cyber architecture, cyber penetration, physical security, physical penetration, operations security, policies and procedures, interdependencies, consequence analysis, and risk characterization. Each of these individual tasks uses direct and indirect data collection, site inspections, and structured and facilitated workshops to gather data. Because of the importance of understanding the cyber threat, LLNL has built both fixed and mobile cyber penetration, wireless penetration and supporting tools that can be tailored to fit customer needs. The Post-Assessment Phase brings vulnerability and risk assessments to the customer in a format that facilitates implementation of mitigation options. Often the assessment findings and recommendations are briefed and discussed with several levels of management and, if appropriate, across jurisdictional boundaries. The end result is enhanced awareness and informed protective measures. Over the last 15 years, we have continued to refine our methodology and capture lessons learned and best practices. The resulting risk and decision framework thus takes into consideration real-world constraints, including regulatory, operational, and economic realities. In addition to 'on the ground' assessments focused on mitigating vulnerabilities, we have integrated our computational and atmospheric dispersion capability with easy-to-use geo-referenced visualization tools to support emergency planning and response operations. LLNL is home to the National Atmospheric Release Advisory Center (NARAC) and the Interagency Modeling and Atmospheric Assessment Center (IMAAC). NA

Suski, N; Wuest, C

2011-02-04T23:59:59.000Z

202

S. 1600, THE CRITICAL MINERALS POLICY ACT OF 2013 Statement of  

E-Print Network [OSTI]

lags involved in bringing new production capacity online or more fundamentally the basic geologic Roles for Government1 As an economist, I believe in the power and effectiveness of markets. Markets. Markets encourage users of critical materials to obtain "insurance": for example, in the short term, users

203

WIPP-016, Rev. 0 Nuclear Criticality Safety Evaluation for  

E-Print Network [OSTI]

WIPP-016, Rev. 0 Nuclear Criticality Safety Evaluation for Contact-Handled Transuranic Waste/2008 Guidance (if applicable): _______________________ #12;NUCLEAR CRITICALITY SAFETY EVALUATION FOR CONTACT, directors, employees, agents, consultants or personal services contractors. #12;NUCLEAR CRITICALITY SAFETY

204

Understanding Bulk Power Reliability: The Importance of Good Data and A Critical Review of Existing Sources  

SciTech Connect (OSTI)

Bulk power system reliability is of critical importance to the electricity sector. Complete and accurate information on events affecting the bulk power system is essential for assessing trends and efforts to maintain or improve reliability. Yet, current sources of this information were not designed with these uses in mind. They were designed, instead, to support real-time emergency notification to industry and government first-responders. This paper reviews information currently collected by both industry and government sources for this purpose and assesses factors that might affect their usefulness in supporting the academic literature that has relied upon them to draw conclusions about the reliability of the US electric power system.

Fisher, Emily; Eto, Joseph H.; LaCommare, Kristina Hamachi

2011-10-19T23:59:59.000Z

205

On the Critical Coupling for Kuramoto Oscillators  

E-Print Network [OSTI]

The celebrated Kuramoto model captures various synchronization phenomena in biological and man-made dynamical systems of coupled oscillators. It is well-known that there exists a critical coupling strength among the oscillators at which a phase transition from incoherency to synchronization occurs. This paper features three contributions. First, we characterize and distinguish the different notions of synchronization used throughout the literature and formally introduce the concept of phase cohesiveness as an analysis tool and performance index for synchronization. Second, we review the vast literature providing necessary, sufficient, implicit, and explicit estimates of the critical coupling strength in the finite and infinite-dimensional case. Finally, we present the first explicit necessary and sufficient condition on the critical coupling strength to achieve synchronization in the finite-dimensional Kuramoto model for an arbitrary distribution of the natural frequencies. The multiplicative gap in the synch...

Dorfler, Florian

2010-01-01T23:59:59.000Z

206

Critical point anomalies include expansion shock waves  

SciTech Connect (OSTI)

From first-principle fluid dynamics, complemented by a rigorous state equation accounting for critical anomalies, we discovered that expansion shock waves may occur in the vicinity of the liquid-vapor critical point in the two-phase region. Due to universality of near-critical thermodynamics, the result is valid for any common pure fluid in which molecular interactions are only short-range, namely, for so-called 3-dimensional Ising-like systems, and under the assumption of thermodynamic equilibrium. In addition to rarefaction shock waves, diverse non-classical effects are admissible, including composite compressive shock-fan-shock waves, due to the change of sign of the fundamental derivative of gasdynamics.

Nannan, N. R., E-mail: ryan.nannan@uvs.edu [Mechanical Engineering Discipline, Anton de Kom University of Suriname, Leysweg 86, PO Box 9212, Paramaribo, Suriname and Process and Energy Department, Delft University of Technology, Leeghwaterstraat 44, 2628 CA Delft (Netherlands); Guardone, A., E-mail: alberto.guardone@polimi.it [Department of Aerospace Science and Technology, Politecnico di Milano, Via La Masa 34, 20156 Milano (Italy); Colonna, P., E-mail: p.colonna@tudelft.nl [Propulsion and Power, Delft University of Technology, Kluyverweg 1, 2629 HS Delft (Netherlands)

2014-02-15T23:59:59.000Z

207

Critical Materials Research in DOE Video (Text Version)  

Broader source: Energy.gov [DOE]

This is a text version of the "Critical Materials Research in DOE" video presented at the Critical Materials Workshop, held on April 3, 2012 in Arlington, Virginia.

208

EV Everywhere Workshop: Electric Motors and Critical Materials...  

Broader source: Energy.gov (indexed) [DOE]

Electric Motors and Critical Materials Breakout Group Report EV Everywhere Workshop: Electric Motors and Critical Materials Breakout Group Report Presentation given at the EV...

209

Advanced Critical Advanced Energy Retrofit Education and Training...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Critical Advanced Energy Retrofit Education and Training and Credentialing - 2014 BTO Peer Review Advanced Critical Advanced Energy Retrofit Education and Training and...

210

National Academies Criticality Methodology and Assessment Video (Text Version)  

Broader source: Energy.gov [DOE]

This is a text version of the "National Academies Criticality Methodology and Assessment" video presented at the Critical Materials Workshop, held on April 3, 2012 in Arlington, Virginia.

211

Steel Success Story - Ironmaking: Quality and Supply Critical...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Steel Success Story - Ironmaking: Quality and Supply Critical to Steel Industry Steel Success Story - Ironmaking: Quality and Supply Critical to Steel Industry This factsheet...

212

V-004: Oracle Critical Patch Update Advisory- October 2012  

Broader source: Energy.gov [DOE]

October 2012 Critical Patch Update, security vulnerability fixes for proprietary components of Oracle Linux will be announced in Oracle Critical Patch Updates.

213

SciTech Connect: Relationship between critical tensile stress...  

Office of Scientific and Technical Information (OSTI)

Relationship between critical tensile stress and fracture toughness in mild steel Citation Details In-Document Search Title: Relationship between critical tensile stress and...

214

CHP: Enabling Resilient Energy Infrastructure for Critical Facilities...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

policies designed to promote CHP in critical infrastructure applications. Combined Heat and Power: Enabling Resilient Energy Infrastructure for Critical Facilities (March...

215

Department of Energy Critical Materials Strategy Video (Text Version)  

Broader source: Energy.gov [DOE]

This is a text version of the "Department of Energy Critical Materials Strategy" video presented at the Critical Materials Workshop, held on April 3, 2012 in Arlington, Virginia.

216

U-019: Oracle Critical Patch Update Advisory- October 2011  

Broader source: Energy.gov [DOE]

October 2011 Critical Patch Update, security vulnerability fixes for proprietary components of Oracle Linux will be announced in Oracle Critical Patch Updates.

217

Lessons learned from early criticality accidents  

SciTech Connect (OSTI)

Four accidents involving the approach to criticality occurred during the period July, 1945, through May, 1996. These have been described in the format of the OPERATING EXPERIENCE WEEKLY SUMMARY which is distributed by the Office of Nuclear and Facility Safety. Although the lessons learned have been incorporated in standards, codes, and formal procedures during the last fifty years, this is their first presentation in this format. It is particularly appropriate that they be presented in the forum of the Nuclear Criticality Technology Safety Project Workshop closest to the fiftieth anniversary of the last of the four accidents, and that which was most instrumental in demonstrating the need to incorporate lessons learned.

Malenfant, R.E.

1996-06-01T23:59:59.000Z

218

QCD Critical Point: The Race is On  

E-Print Network [OSTI]

A critical point in the phase diagram of Quantum Chromodynamics (QCD), if established either theoretically or experimentally, would be as profound a discovery as the good-old gas-liquid critical point. Unlike the latter, however, first-principles based approaches are being employed to locate it theoretically. Due to the short lived nature of the concerned phases, novel experimental techniques are needed to search for it. The Relativistic Heavy Ion Collider (RHIC) in USA has an experimental program to do so. This short review is an attempt to provide a glimpse of the race between the theorists and the experimentalists as well as that of the synergy between them.

Rajiv V. Gavai

2014-04-26T23:59:59.000Z

219

CRITICALITY HAZOP EFFICIENTLY EVALUATING HAZARDS OF NEW OR REVISED CRITICALITY SAFETY EVALUATIONS  

SciTech Connect (OSTI)

The 'Criticality HazOp' technique, as developed at Hanford's Plutonium Finishing Plant (PFP), has allowed for efficiencies enabling shortening of the time necessary to complete new or revised criticality safety evaluation reports (CSERs). For example, in the last half of 2007 at PFP, CSER revisions undergoing the 'Criticality HazOp' process were completed at a higher rate than previously achievable. The efficiencies gained through use of the 'Criticality HazOp' process come from the preliminary narrowing of potential scenarios for the Criticality analyst to fully evaluate in preparation of the new or revised CSER, and from the use of a systematized 'Criticality HazOp' group assessment of the relevant conditions to show which few parameter/condition/deviation combinations actually require analytical effort. The 'Criticality HazOp' has not only provided efficiencies of time, but has brought to criticality safety evaluation revisions the benefits of a structured hazard evaluation method and the enhanced insight that may be gained from direct involvement of a team in the process. In addition, involved personnel have gained a higher degree of confidence and understanding of the resulting CSER product.

CARSON DM

2008-04-15T23:59:59.000Z

220

Designing A Critical LinkDesigning A Critical Link PSU Transportation Seminar  

E-Print Network [OSTI]

Designing A Critical LinkDesigning A Critical Link PSU Transportation Seminar May 19, 2006 #12;2PSU Transportation Seminar ­ May 19, 2006 Presentation Outline · Project History · Function and Role of the I-5 · Process and Schedule #12;Project HistoryProject History #12;4PSU Transportation Seminar ­ May 19, 2006 I-5

Bertini, Robert L.

Note: This page contains sample records for the topic "obtain information critical" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Reactor Testing and Qualification: Prioritized High-level Criticality Testing Needs  

SciTech Connect (OSTI)

Researchers at the Idaho National Laboratory (INL) were tasked with reviewing possible criticality testing needs to support development of the fission surface power system reactor design. Reactor physics testing can provide significant information to aid in development of technologies associated with small, fast spectrum reactors that could be applied for non-terrestrial power systems, leading to eventual system qualification. Several studies have been conducted in recent years to assess the data and analyses required to design and build a space fission power system with high confidence that the system will perform as designed [Marcille, 2004a, 2004b; Weaver, 2007; Parry et al., 2008]. This report will provide a summary of previous critical tests and physics measurements that are potentially applicable to the current reactor design (both those that have been benchmarked and those not yet benchmarked), summarize recent studies of potential nuclear testing needs for space reactor development and their applicability to the current baseline fission surface power (FSP) system design, and provide an overview of a suite of tests (separate effects, sub-critical or critical) that could fill in the information database to improve the accuracy of physics modeling efforts as the FSP design is refined. Some recommendations for tasks that could be completed in the near term are also included. Specific recommendations on critical test configurations will be reserved until after the sensitivity analyses being conducted by Los Alamos National Laboratory (LANL) are completed (due August 2011).

S. Bragg-Sitton; J. Bess; J. Werner; G. Harms; S. Bailey

2011-09-01T23:59:59.000Z

222

ORNL/CDIAC-143 CARBON DIOXIDE, HYDROGRAPHIC, AND CHEMICAL DATA OBTAINED DURING THE  

E-Print Network [OSTI]

Kozyr Carbon Dioxide Information Analysis Center Oak Ridge National Laboratory Oak Ridge, Tennessee, U Prepared by the Carbon Dioxide Information Analysis Center OAK RIDGE NATIONAL LABORATORY Oak Ridge

223

Criticality Calculations for Step-2 GPHS Modules  

SciTech Connect (OSTI)

The Multi-Mission Radioisotope Thermoelectric Generator (MMRTG) will use an improved version of the General Purpose Heat Source (GPHS) module as its source of thermal power. This new version, referred to as the Step-2 GPHS Module, has additional and thicker layers of carbon fiber material (Fine Weaved Pierced Fabric) for increased strength over the original GPHS module. The GPHS uses alpha decay of {sup 238}Pu in the oxide form as the primary source of heat, and small amounts of other actinides are also present in the oxide fuel. Criticality calculations have been performed by previous researchers on the original version of the GPHS module (Step 0). This paper presents criticality calculations for the present Step-2 version. The Monte Carlo N-Particle eXtended code (MCNPX) was used for these calculations. Numerous configurations of GPHS module arrays surrounded by wet sand and other materials (to reflect the neutrons back into the stack with minimal absorption) were modeled. For geometries with eight GPHS modules (from a single MMRTG) surrounded by wet sand, the configuration is extremely sub-critical; k{sub eff} is about 0.3. It requires about 1000 GPHS modules (from 125 MMRTGs) in a close-spaced stack to approach criticality (k{sub eff} = 1.0) when surrounded by wet sand. The effect of beryllium in the MMRTG was found to be relatively small.

Lipinski, Ronald J. [Advanced Nuclear Concepts Department, Sandia National Laboratories, P.O Box 5800, Albuquerque, NM 87185 (United States); Hensen, Danielle L. [Risk and Reliability Department Sandia National Laboratories, P.O Box 5800, Albuquerque, NM 87185 (United States)

2008-01-21T23:59:59.000Z

224

Criticality calculations for Step-2 GPHS modules.  

SciTech Connect (OSTI)

The Multi-Mission Radioisotope Thermoelectric Generator (MMRTG) will use an improved version of the General Purpose Heat Source (GPHS) module as its source of thermal power. This new version, referred to as the Step-2 GPHS Module, has additional and thicker layers of carbon fiber material (Fine Weaved Pierced Fabric) for increased strength over the original GPHS module. The GPHS uses alpha decay of {sup 238}Pu in the oxide form as the primary source of heat, and small amounts of other actinides are also present in the oxide fuel. Criticality calculations have been performed by previous researchers on the original version of the GPHS module (Step 0). This paper presents criticality calculations for the present Step-2 version. The Monte Carlo N-Particle eXtended code (MCNPX) was used for these calculations. Numerous configurations of GPHS module arrays surrounded by wet sand and other materials (to reflect the neutrons back into the stack with minimal absorption) were modeled. For geometries with eight GPHS modules (from a single MMRTG) surrounded by wet sand, the configuration is extremely sub-critical; k{sub eff} is about 0.3. It requires about 1000 GPHS modules (from 125 MMRTGs) in a close-spaced stack to approach criticality (k{sub eff} = 1.0) when surrounded by wet sand. The effect of beryllium in the MMRTG was found to be relatively small.

Hensen, Danielle Lynn; Lipinski, Ronald J.

2007-08-01T23:59:59.000Z

225

Reliability Failure Mode, Effects, and Criticality Analysis  

E-Print Network [OSTI]

Reliability Failure Mode, Effects, and Criticality Analysis Addendum 1; HFE ~ ATM501 PAGE I I. Hiebert Reliability Engineer HFE · B-1 f #12;~~.~-~ -_ ~ ~ Reliability Failure Mode, Effects were slight adjustment in the linearizing resistors. The reliability is effected upward by the deletion

Rathbun, Julie A.

226

Determination of Critical Exponents in Nuclear Systems  

E-Print Network [OSTI]

Signatures of critical behaviour in nuclear fragmentation are often based on arguments from percolation theory. We demonstrate with general thermodynamic considerations and studies of the Ising model that the reliance on percolation as a reference model bears the risk of missing parts of the essential physics.

W. F. J. Mueller; ALADIN collaboration

1996-07-08T23:59:59.000Z

227

Robust Critical Node Selection by Benders Decomposition  

E-Print Network [OSTI]

critical node selection problem, we define the following decision variables ..... method to generate Pareto-optimal cuts thus achieving very good speed-ups compared to ... Barabási-Albert graphs generated using the Barabási graph generator (Dreier, 2006). ...... Computers & Operations Research, 38(12):1766 – 1774, 2011.

2014-01-28T23:59:59.000Z

228

Critical Electric Power Issues in Pennsylvania  

E-Print Network [OSTI]

Critical Electric Power Issues in Pennsylvania: Transmission, Distributed Generation and Continuing Services when the Grid Fails Produced by the Carnegie Mellon Electricity Industry Center for the Pa-268-3003, apt@cmu.edu. Executive Director of the Carnegie Mellon Electricity Industry Center at Carnegie Mellon

229

Arthur Fine Bohrs Response to EPR: Criticism  

E-Print Network [OSTI]

Arthur Fine Bohrs Response to EPR: Criticism and Defense If a specific question has meaning of focus that Niels Bohr makes in responding to EPR.1 EPR appeal to measurement as sometimes sufficient ("elements of reality"). In his response, Bohr, while paraphrasing thewordsofEPR

Fine, Arthur

230

Critical point analysis of phase envelope diagram  

SciTech Connect (OSTI)

Phase diagram or phase envelope is a relation between temperature and pressure that shows the condition of equilibria between the different phases of chemical compounds, mixture of compounds, and solutions. Phase diagram is an important issue in chemical thermodynamics and hydrocarbon reservoir. It is very useful for process simulation, hydrocarbon reactor design, and petroleum engineering studies. It is constructed from the bubble line, dew line, and critical point. Bubble line and dew line are composed of bubble points and dew points, respectively. Bubble point is the first point at which the gas is formed when a liquid is heated. Meanwhile, dew point is the first point where the liquid is formed when the gas is cooled. Critical point is the point where all of the properties of gases and liquids are equal, such as temperature, pressure, amount of substance, and others. Critical point is very useful in fuel processing and dissolution of certain chemicals. Here in this paper, we will show the critical point analytically. Then, it will be compared with numerical calculations of Peng-Robinson equation by using Newton-Raphson method. As case studies, several hydrocarbon mixtures are simulated using by Matlab.

Soetikno, Darmadi; Siagian, Ucok W. R. [Department of Petroleum Engineering, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132 (Indonesia); Kusdiantara, Rudy, E-mail: rkusdiantara@s.itb.ac.id; Puspita, Dila, E-mail: rkusdiantara@s.itb.ac.id; Sidarto, Kuntjoro A., E-mail: rkusdiantara@s.itb.ac.id; Soewono, Edy; Gunawan, Agus Y. [Department of Mathematics, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132 (Indonesia)

2014-03-24T23:59:59.000Z

231

VLA HYBRID CONFIGURATIONS A Critical Look  

E-Print Network [OSTI]

VLA HYBRID CONFIGURATIONS A Critical Look Barry Clark EVLA Memo 180 July 2014 The VLA hybrid weeks (plus the two week hybrid), whereas going directly from one main configuration to another could 4.5%. 2. The time requests in the hybrid configuration are heavily weighted to the galactic center

Groppi, Christopher

232

Framework for Improving Critical Infrastructure Cybersecurity  

E-Print Network [OSTI]

Framework for Improving Critical Infrastructure Cybersecurity Version 1.0 National Institute of Standards and Technology February 12, 2014 #12;February 12, 2014 Cybersecurity Framework Version 1.0 Table............................................................................................................. 20 ii #12;February 12, 2014 Cybersecurity Framework Version 1.0 Executive Summary The national

233

Geological carbon sequestration: critical legal issues  

E-Print Network [OSTI]

Geological carbon sequestration: critical legal issues Ray Purdy and Richard Macrory January 2004 Tyndall Centre for Climate Change Research Working Paper 45 #12;1 Geological carbon sequestration an integrated assessment of geological carbon sequestration (Project ID code T2.21). #12;2 1 Introduction

Watson, Andrew

234

E-Print Network 3.0 - acid isomers obtained Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

isomers obtained Search Powered by Explorit Topic List Advanced Search Sample search results for: acid isomers obtained Page: << < 1 2 3 4 5 > >> 1 Refolding of Amphioxus...

235

Reactor Physics and Criticality Benchmark Evaluations for Advanced Nuclear Fuel - Final Technical Report  

SciTech Connect (OSTI)

The nuclear industry interest in advanced fuel and reactor design often drives towards fuel with uranium enrichments greater than 5 wt% 235U. Unfortunately, little data exists, in the form of reactor physics and criticality benchmarks, for uranium enrichments ranging between 5 and 10 wt% 235U. The primary purpose of this project is to provide benchmarks for fuel similar to what may be required for advanced light water reactors (LWRs). These experiments will ultimately provide additional information for application to the criticality-safety bases for commercial fuel facilities handling greater than 5 wt% 235U fuel.

William Anderson; James Tulenko; Bradley Rearden; Gary Harms

2008-09-11T23:59:59.000Z

236

Matrix product states and variational methods applied to critical quantum field theory  

E-Print Network [OSTI]

We study the second-order quantum phase-transition of massive real scalar field theory with a quartic interaction ($\\phi^4$ theory) in (1+1) dimensions on an infinite spatial lattice using matrix product states (MPS). We introduce and apply a naive variational conjugate gradient method, based on the time-dependent variational principle (TDVP) for imaginary time, to obtain approximate ground states, using a related ansatz for excitations to calculate the particle and soliton masses and to obtain the spectral density. We also estimate the central charge using finite-entanglement scaling. Our value for the critical parameter agrees well with recent Monte Carlo results, improving on an earlier study which used the related DMRG method, verifying that these techniques are well-suited to studying critical field systems. We also obtain critical exponents that agree, as expected, with those of the transverse Ising model. Additionally, we treat the special case of uniform product states (mean field theory) separately, showing that they may be used to investigate non-critical quantum field theories under certain conditions.

Ashley Milsted; Jutho Haegeman; Tobias J. Osborne

2014-05-15T23:59:59.000Z

237

Critical confinement and elastic instability in thin solid films  

E-Print Network [OSTI]

When a flexible plate is peeled off a thin and soft elastic film bonded to a rigid support, uniformly spaced fingering patterns develop along their line of contact. While, the wavelength of these patterns depends only on the thickness of the film, their amplitude varies with all material and geometric properties of the film and that of the adhering plate. Here we have analyzed this instability by the regular perturbation technique to obtain the excess deformations of the film over and above the base quantities. Furthermore, by calculating the excess energy of the system we have shown that these excess deformations, associated with the instability, occur for films which are critically confined. We have presented two different experiments for controlling the degree of confinement: by pre-stretching the film and by adjusting the contact width between the film and the plate.

Animangsu Ghatak; Manoj K. Chaudhury

2007-01-11T23:59:59.000Z

238

Construction of spin models displaying quantum criticality from quantum field theory  

E-Print Network [OSTI]

We provide a method for constructing finite temperature states of one-dimensional spin chains displaying quantum criticality. These models are constructed using correlators of products of quantum fields and have an analytical purification. Their properties can be investigated by Monte-Carlo simulations, which enable us to study the low-temperature phase diagram and to show that it displays a region of quantum criticality. The mixed states obtained are shown to be close to the thermal state of a simple nearest neighbour Hamiltonian.

Ivan Glasser; J. Ignacio Cirac; Germán Sierra; Anne E. B. Nielsen

2014-07-23T23:59:59.000Z

239

Approaching total absorption at near infrared in a large area monolayer graphene by critical coupling  

SciTech Connect (OSTI)

We demonstrate experimentally close to total absorption in monolayer graphene based on critical coupling with guided resonances in transfer printed photonic crystal Fano resonance filters at near infrared. Measured peak absorptions of 35% and 85% were obtained from cavity coupled monolayer graphene for the structures without and with back reflectors, respectively. These measured values agree very well with the theoretical values predicted with the coupled mode theory based critical coupling design. Such strong light-matter interactions can lead to extremely compact and high performance photonic devices based on large area monolayer graphene and other two–dimensional materials.

Liu, Yonghao; Chadha, Arvinder; Zhao, Deyin; Shuai, Yichen; Menon, Laxmy; Yang, Hongjun; Zhou, Weidong, E-mail: wzhou@uta.edu [Nanophotonics Lab, Department of Electrical Engineering, University of Texas at Arlington, Arlington, Texas 76019 (United States); Piper, Jessica R.; Fan, Shanhui [Ginzton Laboratory, Department of Electrical Engineering, Stanford University, Stanford, California 94305 (United States); Jia, Yichen; Xia, Fengnian [Department of Electrical Engineering, Yale University, New Haven, Connecticut 06520 (United States); Ma, Zhenqiang [Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States)

2014-11-03T23:59:59.000Z

240

Critical Nuclear Charges for N-Electron Atoms  

E-Print Network [OSTI]

Critical Nuclear Charges for N-Electron Atoms ALEXEI V. SERGEEV, SABRE KAIS Department of Chemistry, which is treated as a continuous parameter, approaches its critical value. The critical nuclear charge: critical nuclear charges; N-electron atoms; stability of atomic dianions Introduction he question

Kais, Sabre

Note: This page contains sample records for the topic "obtain information critical" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

CSRL-V ENDF/B-V 227-group neutron cross-section library and its application to thermal-reactor and criticality safety benchmarks  

SciTech Connect (OSTI)

Characteristics and contents of the CSRL-V (Criticality Safety Reference Library based on ENDF/B-V data) 227-neutron-group AMPX master and pointwise cross-section libraries are described. Results obtained in using CSRL-V to calculate performance parameters of selected thermal reactor and criticality safety benchmarks are discussed.

Ford, W.E. III; Diggs, B.R.; Knight, J.R.; Greene, N.M.; Petrie, L.M.; Webster, C.C.; Westfall, R.M.; Wright, R.Q.; Williams, M.L.

1982-01-01T23:59:59.000Z

242

Validation and Comparison of Carbon Sequestration Project Cost Models with Project Cost Data Obtained from the Southwest Partnership  

SciTech Connect (OSTI)

Obtaining formal quotes and engineering conceptual designs for carbon dioxide (CO{sub 2}) sequestration sites and facilities is costly and time-consuming. Frequently, when looking at potential locations, managers, engineers and scientists are confronted with multiple options, but do not have the expertise or the information required to quickly obtain a general estimate of what the costs will be without employing an engineering firm. Several models for carbon compression, transport and/or injection have been published that are designed to aid in determining the cost of sequestration projects. A number of these models are used in this study, including models by J. Ogden, MIT's Carbon Capture and Sequestration Technologies Program Model, the Environmental Protection Agency and others. This report uses the information and data available from several projects either completed, in progress, or conceptualized by the Southwest Regional Carbon Sequestration Partnership on Carbon Sequestration (SWP) to determine the best approach to estimate a project's cost. The data presented highlights calculated versus actual costs. This data is compared to the results obtained by applying several models for each of the individual projects with actual cost. It also offers methods to systematically apply the models to future projects of a similar scale. Last, the cost risks associated with a project of this scope are discussed, along with ways that have been and could be used to mitigate these risks.

Robert Lee; Reid Grigg; Brian McPherson

2011-04-15T23:59:59.000Z

243

Jatropha Curcas Kernel Meals Obtained From Four Different Agro-Climatic Areas of Ghana:  

E-Print Network [OSTI]

) concentration of Jatropha curcas kernel meals (KM) obtained from four different agro-climatic conditions. The

S. K. Chikpah; B. Demuyakor

244

Water/sand flooded and immersed critical experiment and analysis performed in support of the TOPAZ-II Safety Program  

SciTech Connect (OSTI)

Presented is a brief description of the Narciss-M2 critical assemblies, which simulate accidental water/wet-sand immersion of the TOPAZ-II reactor as well as water-flooding of core cavities. Experimental results obtained from these critical assemblies, including experiments with several fuel elements removed from the core, are shown. These configurations with several extracted fuel elements simulate a proposed fuel-out anticriticality-device modification to the TOPAZ-II reactor. Preliminary computational analysis of these experiments using the Monte Carlo neutron-transport method is outlined. Nuclear criticality safety of the TOPAZ-II reactor with an incorporated anticriticality unit is demonstrated.

Glushkov, E.S.; Ponomarev-Stepnoi, N.N.; Bubelev, V.G.; Garin, V.P.; Gomin, E.A.; Kompanietz, G.V.; Krutoy, A.M.; Lobynstev, V.A.; Maiorov, L.V.; Polyakov, D.N. [RRC Kurchatov Institute, Moscow (Russian Federation)] [and others

1994-11-01T23:59:59.000Z

245

Information Sciences  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun withconfinementEtching.348ASSEMBLYInfluenceInformation3 Information Sciences

246

Contact Information  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation InInformationCenterResearchCASLNanoporousTestimony |IdahoVisionContact In

247

Refined Critical Balance in Strong Alfvénic Turbulence  

E-Print Network [OSTI]

We present numerical evidence that in strong Alfv\\'enic turbulence, the critical balance principle---equality of the nonlinear decorrelation and linear propagation times---is scale invariant, in the sense that the probability distribution of the ratio of these times is independent of scale. This result only holds if the local alignment of the Elsasser fields is taken into account in calculating the nonlinear time. At any given scale, the degree of alignment is found to increase with fluctuation amplitude, supporting the idea that the cause of alignment is mutual dynamical shearing of Elsasser fields. The scale-invariance of critical balance (while all other quantities of interest are strongly intermittent, i.e., have scale-dependent distributions) suggests that it is the most robust of the scaling principles used to describe Alfv\\'enic turbulence.

A. Mallet; A. A. Schekochihin; B. D. G. Chandran

2014-06-21T23:59:59.000Z

248

Bekenstein-Hawking entropy from Criticality  

E-Print Network [OSTI]

Vacuum Einstein equations when projected on to a black hole horizon is analogous to the dynamics of fluids. In this work we address the question, whether certain properties of semi-classical black holes could be holographically mapped into properties of (2 + 1)-dimensional fluid living on the horizon. In particular, we focus on the statistical mechanical description of the horizon-fluid that leads to Bekenstein-Hawking entropy. Within the paradigm of Landau mean field theory and existence of a condensate at a critical temperature, we explicitly show that Bekenstein-Hawking entropy and other features of black hole thermodynamics can be recovered from the statistical modelling of the fluid. We also show that a negative cosmological constant acts like an external magnetic field that induces order in the system leading to the appearance of a tri-critical point in the phase diagram.

Swastik Bhattacharya; S. Shankaranarayanan

2014-11-28T23:59:59.000Z

249

EPR and Bell's theorem: A critical review  

SciTech Connect (OSTI)

The argument of Einstein, Podolsky, and Rosen is reviewed with attention to logical structure and character of assumptions. Bohr's reply is discussed. Bell's contribution is formulated without use of hidden variables, and efforts to equate hidden variables to realism are critically examined. An alternative derivation of nonlocality that makes no use of hidden variables, microrealism, counterfactual definiteness, or any other assumption alien to orthodox quantum thinking is described in detail, with particular attention to the quartet or broken-square question.

Stapp, H.P. (Lawrence Berkeley Lab., CA (United States))

1991-01-01T23:59:59.000Z

250

Architecture for high critical current superconducting tapes  

DOE Patents [OSTI]

Improvements in critical current capacity for superconducting film structures are disclosed and include the use of, e.g., multilayer YBCO structures where individual YBCO layers are separated by a layer of an insulating material such as CeO.sub.2 and the like, a layer of a conducting material such as strontium ruthenium oxide and the like or by a second superconducting material such as SmBCO and the like.

Jia, Quanxi (Los Alamos, NM); Foltyn, Stephen R. (Los Alamos, NM)

2002-01-01T23:59:59.000Z

251

Results from 2010 Caliban Criticality Dosimetry Intercomparison  

SciTech Connect (OSTI)

The external dosimetry program participated in a criticality dosimetry intercomparison conducted at the Caliban facility in Valduc, France in 2010. Representatives from the dosimetry and instrumentation groups were present during testing which included irradiations of whole-body beta/gamma (HBGT) and neutron thermoluminescent dosimeters (TLDs), a fixed nuclear accident dosimeter (FNAD), electronic alarming dosimeters, and a humanoid phantom filled with reference man concentrations of sodium. This report reviews the testing procedures, preparations, irradiations, and presents results of the tests.

Veinot, K. G.

2011-10-12T23:59:59.000Z

252

Observation of the critical end point in the phase diagram for hot and dense nuclear matter  

E-Print Network [OSTI]

Excitation functions for the Gaussian emission source radii difference ($R^2_{\\text{out}} - R^2_{\\text{side}}$) obtained from two-pion interferometry measurements in Au+Au ($\\sqrt{s_{NN}}= 7.7 - 200$ GeV) and Pb+Pb ($\\sqrt{s_{NN}}= 2.76$ TeV) collisions, are studied for a broad range of collision centralities. The observed non-monotonic excitation functions validate the finite-size scaling patterns expected for the deconfinement phase transition and the critical end point (CEP), in the temperature vs. baryon chemical potential ($T,\\mu_B$) plane of the nuclear matter phase diagram. A Finite-Size Scaling (FSS) analysis of these data indicate a second order phase transition with the estimates $T^{\\text{cep}} \\sim 165$~MeV and $\\mu_B^{\\text{cep}} \\sim 100$~MeV for the location of the critical end point. The critical exponents ($\

Lacey, Roy A

2014-01-01T23:59:59.000Z

253

Information International  

E-Print Network [OSTI]

. Orientation 17 Section 4 ­ Miscellaneous information 18 A. Dates of future academic sessions 18 B. Contact Checklist Back Cover Contents EUROPEAN NATIONALS/RESIDENTS NEED TO READ THE WHOLE OF ALL SECTIONS MARKED NON-EUROPEAN NATIONALS/RESIDENTS NEED TO READ THE WHOLE OF ALL SECTIONS MARKED SECTIONS MARKED SHOULD BE READ BY ALL

Petriu, Emil M.

254

CORPORATETECHNOLOGY Information &  

E-Print Network [OSTI]

s CORPORATETECHNOLOGY Information & Communications Neural Computation SIEMENS Structural Equation Modelling of fMRI-Data Norbert Galm CT IC 4 11.11.2003 #12;SIEMENS © Siemens AG, CT IC 4 - all rights in fMRI experiments the BOLD signal (blood oxygen level dependent) is measured: #12;SIEMENS © Siemens

Popeea, Corneliu - Chair for Foundations of Software Reliability and Theoretical Computer Science

255

postgraduate information  

E-Print Network [OSTI]

, biomedical engineering and technology, clean energy, water and the environment, complex systems and materialspostgraduate guide 2014 information technology and management #12;"The knowledge and skills Technology has been an excellent investment in my own development and will be crucial to realising my future

Scholz, Bernhard

256

Mercury Information Clearinghouse  

SciTech Connect (OSTI)

The Canadian Electricity Association (CEA) identified a need and contracted the Energy & Environmental Research Center (EERC) to create and maintain an information clearinghouse on global research and development activities related to mercury emissions from coal-fired electric utilities. With the support of CEA, the Center for Air Toxic Metals{reg_sign} (CATM{reg_sign}) Affiliates, and the U.S. Department of Energy (DOE), the EERC developed comprehensive quarterly information updates that provide a detailed assessment of developments in the various areas of mercury monitoring, control, policy, and research. A total of eight topical reports were completed and are summarized and updated in this final CEA quarterly report. The original quarterly reports can be viewed at the CEA Web site (www.ceamercuryprogram.ca). In addition to a comprehensive update of previous mercury-related topics, a review of results from the CEA Mercury Program is provided. Members of Canada's coal-fired electricity generation sector (ATCO Power, EPCOR, Manitoba Hydro, New Brunswick Power, Nova Scotia Power Inc., Ontario Power Generation, SaskPower, and TransAlta) and CEA, have compiled an extensive database of information from stack-, coal-, and ash-sampling activities. Data from this effort are also available at the CEA Web site and have provided critical information for establishing and reviewing a mercury standard for Canada that is protective of environment and public health and is cost-effective. Specific goals outlined for the CEA mercury program included the following: (1) Improve emission inventories and develop management options through an intensive 2-year coal-, ash-, and stack-sampling program; (2) Promote effective stack testing through the development of guidance material and the support of on-site training on the Ontario Hydro method for employees, government representatives, and contractors on an as-needed basis; (3) Strengthen laboratory analytical capabilities through analysis and quality assurance programs; and (4) Create and maintain an information clearinghouse to ensure that all parties can keep informed on global mercury research and development activities.

Chad A. Wocken; Michael J. Holmes; Dennis L. Laudal; Debra F. Pflughoeft-Hassett; Greg F. Weber; Nicholas V. C. Ralston; Stanley J. Miller; Grant E. Dunham; Edwin S. Olson; Laura J. Raymond; John H. Pavlish; Everett A. Sondreal; Steven A. Benson

2006-03-31T23:59:59.000Z

257

Improved criticality convergence via a modified Monte Carlo iteration method  

SciTech Connect (OSTI)

Nuclear criticality calculations with Monte Carlo codes are normally done using a power iteration method to obtain the dominant eigenfunction and eigenvalue. In the last few years it has been shown that the power iteration method can be modified to obtain the first two eigenfunctions. This modified power iteration method directly subtracts out the second eigenfunction and thus only powers out the third and higher eigenfunctions. The result is a convergence rate to the dominant eigenfunction being |k{sub 3}|/k{sub 1} instead of |k{sub 2}|/k{sub 1}. One difficulty is that the second eigenfunction contains particles of both positive and negative weights that must sum somehow to maintain the second eigenfunction. Summing negative and positive weights can be done using point detector mechanics, but this sometimes can be quite slow. We show that an approximate cancellation scheme is sufficient to accelerate the convergence to the dominant eigenfunction. A second difficulty is that for some problems the Monte Carlo implementation of the modified power method has some stability problems. We also show that a simple method deals with this in an effective, but ad hoc manner.

Booth, Thomas E [Los Alamos National Laboratory; Gubernatis, James E [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

258

Finite size scaling for quantum criticality using the finite-element method  

E-Print Network [OSTI]

Finite size scaling for the Schr\\"{o}dinger equation is a systematic approach to calculate the quantum critical parameters for a given Hamiltonian. This approach has been shown to give very accurate results for critical parameters by using a systematic expansion with global basis-type functions. Recently, the finite element method was shown to be a powerful numerical method for ab initio electronic structure calculations with a variable real-space resolution. In this work, we demonstrate how to obtain quantum critical parameters by combining the finite element method (FEM) with finite size scaling (FSS) using different ab initio approximations and exact formulations. The critical parameters could be atomic nuclear charges, internuclear distances, electron density, disorder, lattice structure, and external fields for stability of atomic, molecular systems and quantum phase transitions of extended systems. To illustrate the effectiveness of this approach we provide detailed calculations of applying FEM to approximate solutions for the two-electron atom with varying nuclear charge; these include Hartree-Fock, density functional theory under the local density approximation, and an "exact"' formulation using FEM. We then use the FSS approach to determine its critical nuclear charge for stability; here, the size of the system is related to the number of elements used in the calculations. Results prove to be in good agreement with previous Slater-basis set calculations and demonstrate that it is possible to combine finite size scaling with the finite-element method by using ab initio calculations to obtain quantum critical parameters. The combined approach provides a promising first-principles approach to describe quantum phase transitions for materials and extended systems.

Edwin Antillon; Birgit Wehefritz-Kaufmann; Sabre Kais

2012-03-08T23:59:59.000Z

259

Evolution of toxicology information systems  

SciTech Connect (OSTI)

Society today is faced with new health risk situations that have been brought about by recent scientific and technical advances. Federal and state governments are required to assess the many potential health risks to exposed populations from the products (chemicals) and by-products (pollutants) of these advances. Because a sound analysis of any potential health risk should be based on the use of relevant information, it behooves those individuals responsible for making the risk assessments to know where to obtain needed information. This paper reviews the origins of toxicology information systems and explores the specialized information center concept that was proposed in 1963 as a means of providing ready access to scientific and technical information. As a means of illustrating this concept, the operation of one specialized information center (the Environmental Mutagen Information Center at Oak Ridge National Laboratory) will be discussed. Insights into how toxicological information resources came into being, their design and makeup, will be of value to those seeking to acquire information for risk assessment purposes. 7 refs., 1 fig., 4 tabs.

Wassom, J.S.; Lu, P.Y. [Oak Ridge National Laboratory, TN (United States)

1990-12-31T23:59:59.000Z

260

LEGACY MANAGEMENT REQUIRES INFORMATION  

SciTech Connect (OSTI)

''Legacy Management Requires Information'' describes the goal(s) of the US Department of Energy's Office of Legacy Management (LM) relative to maintaining critical records and the way those goals are being addressed at Hanford. The paper discusses the current practices for document control, as well as the use of modern databases for both storing and accessing the data to support cleanup decisions. In addition to the information goals of LM, the Hanford Federal Facility Agreement and Consent Order, known as the ''Tri-Party Agreement'' (TPA) is one of the main drivers in documentation and data management. The TPA, which specifies discrete milestones for cleaning up the Hanford Site, is a legally binding agreement among the US Department of Energy (DOE), the Washington State Department of Ecology (Ecology), and the US Environmental Protection Agency (EPA). The TPA requires that DOE provide the lead regulatory agency with the results of analytical laboratory and non-laboratory tests/readings to help guide them in making decisions. The Agreement also calls for each signatory to preserve--for at least ten years after the Agreement has ended--all of the records in its or its contractors, possession related to sampling, analysis, investigations, and monitoring conducted. The tools used at Hanford to meet TPA requirements are also the tools that can satisfy the needs of LM.

CONNELL, C.W.; HILDEBRAND, R.D.

2006-12-14T23:59:59.000Z

Note: This page contains sample records for the topic "obtain information critical" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Critical Materials Institute UPDATE | The Ames Laboratory  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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262

Assessment of national systems for obtaining local acceptance of waste management siting and routing activities  

SciTech Connect (OSTI)

There is a rich mixture of formal and informal approaches being used in our sister nuclear democracies in their attempts to deal with the difficulties of obtaining local acceptance for siting of waste management facilities and activities. Some of these are meeting with a degree of success not yet achieved in the US. Although this survey documents and assesses many of these approaches, time did not permit addressing in any detail their relevance to common problems in the US. It would appear the US could benefit from a periodic review of the successes and failures of these efforts, including analysis of their applicability to the US system. Of those countries (Germany, Sweden, Switzerland, Japan, Belgium, and the US) who are working to a time table for the preparation of a high-level waste (HLW) repository, Germany is the only country to have gained local siting acceptance for theirs. With this (the most difficult of siting problems) behind them they appear to be in the best overall condition relative to waste management progress and plans. This has been achieved without a particularly favorable political structure, made up for by determination on the part of the political leadership. Of the remaining three countries studied (France, UK and Canada) France, with its AVM production facility, is clearly the world leader in the HLW immobilization aspect of waste management. France, Belgium and the UK appear to have the least favorable political structures and environments for arriving at waste management decisions. US, Switzerland and Canada appear to have the least favorable political structures and environments for arriving at waste management decisions.

Paige, H.W.; Lipman, D.S.; Owens, J.E.

1980-07-01T23:59:59.000Z

263

How to Obtain Authorization to Import and/or Export Natural Gas...  

Broader source: Energy.gov (indexed) [DOE]

How to Obtain Authorization to Import andor Export Natural Gas and LNG How to Obtain Authorization to Import andor Export Natural Gas and LNG LNG Exports | Long Terms | Blanket...

264

Manhattan Project: CP-1 Goes Critical, Met Lab, December 2, 1942  

Office of Scientific and Technical Information (OSTI)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation InInformation In closing,-- Energy, science,LinksCP-1 GOES CRITICAL (Met Lab, December 2,

265

Transmission Information  

E-Print Network [OSTI]

(symbols/s) information rate: R = Rs ·H (bits/s) . Code each symbol by log 2 q bits (BCD), then data rate Rs · log 2 q > R, unless source is equal probable pi = 1/q, 1 # i # q . How to code symbols in an e that the signal exhibits some form of redundancy, which should be exploited when the signal is coded

Chen, Sheng

266

Transmission Information  

E-Print Network [OSTI]

Memoryless source with independent symbols (code each symbol by log 2 q bits is called binary coded decimal (BCD)) mi, pi 1 # i # q # # # # BCD: log 2 q (bits/symbol) symbol rate Rs (symbols/s) data bit rate: Rs/symbol) Information rate R = Rs ·H (bits/s) . How to code symbols to achieve e#ciency (data bit rate = R)? 14 #12

Chen, Sheng

267

SECOND WASTE PACKAGE PROBABILISTIC CRITICALITY ANALYSIS: GENERATION AND EVALUATION OF INTERNAL CRITICIALITY CONFIGURATIONS  

SciTech Connect (OSTI)

This analysis is prepared by the Mined Geologic Disposal System (MGDS) Waste Package Development (WPD) department to provide an evaluation of the criticality potential within a waste package having sonic or all of its contents degraded by corrosion and removal of neutron absorbers. This analysis is also intended to provide an estimate of the consequences of any internal criticality, particularly in terms of any increase in radionuclide inventory. These consequence estimates will be used as part of the WPD input to the Total System Performance Assessment. The ultimate objective of this analysis is to augment the information gained from the Initial Waste Package Probabilistic Criticality Analyses (Ref. 5.8 and 5.9, hereafter referred to as IPA) to a degree which will support preliminary waste package design recommendations intended to reduce the risk of waste package criticality and the risk to total repository system performance posed by the consequences of any criticality. The IPA evaluated the criticality potential under the assumption that the waste package basket retained its structural integrity, so that the assemblies retained their initial separation, even when the neutron absorbers had been leached from the basket. This analysis is based on the more realistic condition that removal of the neutron absorbers is a consequence of the corrosion of the steel in which they are contained, which has the additional consequence of reducing the structural support between assemblies. The result is a set of more reactive configurations having a smaller spacing between assemblies, or no inter-assembly spacing at all. Another difference from the IPA is the minimal attention to probabilistic evaluation given in this study. Although the IPA covered a time horizon to 100,000 years, the lack of consideration of basket degradation modes made it primarily applicable to the first 10,000 years. In contrast, this study, by focusing on the degraded modes of the basket, is primarily applicable to the post 10,000 year time horizon. The principal probability related objective of this analysis is to estimate the earliest time at which a criticality can possibly occur, as a function of several environmental and material performance parameters, the specific values of which are subject to great uncertainty. It should be noted that the longer the possibility of criticality is delayed, the less will be the probability of any criticality at all, because of the increased probability that the waste package bottom will be penetrated by corrosion so that the waste package can no longer hold enough water to provide the necessary moderation to support the criticality.

P. Gottlieb, J.R. Massari, J.K. McCoy

1996-03-27T23:59:59.000Z

268

On the Critical Coupling for Kuramoto Oscillators  

E-Print Network [OSTI]

The Kuramoto model captures various synchronization phenomena in biological and man-made systems of coupled oscillators. It is well-known that there exists a critical coupling strength among the oscillators at which a phase transition from incoherency to synchronization occurs. This paper features four contributions. First, we characterize and distinguish the different notions of synchronization used throughout the literature and formally introduce the concept of phase cohesiveness as an analysis tool and performance index for synchronization. Second, we review the vast literature providing necessary, sufficient, implicit, and explicit estimates of the critical coupling strength for finite and infinite-dimensional, and for first and second-order Kuramoto models. Third, we present the first explicit necessary and sufficient condition on the critical coupling to achieve synchronization in the finite-dimensional Kuramoto model for an arbitrary distribution of the natural frequencies. The multiplicative gap in the synchronization condition yields a practical stability result determining the admissible initial and the guaranteed ultimate phase cohesiveness as well as the guaranteed asymptotic magnitude of the order parameter. Fourth and finally, we extend our analysis to multi-rate Kuramoto models consisting of second-order Kuramoto oscillators with inertia and viscous damping together with first-order Kuramoto oscillators with multiple time constants. We prove that the multi-rate Kuramoto model is locally topologically conjugate to a first-order Kuramoto model with scaled natural frequencies, and we present necessary and sufficient conditions for almost global phase synchronization and local frequency synchronization. Interestingly, these conditions do not depend on the inertiae which contradicts prior observations on the role of inertiae in synchronization of second-order Kuramoto models.

Florian Dorfler; Francesco Bullo

2011-05-05T23:59:59.000Z

269

FIRST SOLAR CELLS ON SILICON RIBBONS OBTAINED BY FAST CVD FROM SILANE  

E-Print Network [OSTI]

FIRST SOLAR CELLS ON SILICON RIBBONS OBTAINED BY FAST CVD FROM SILANE C. R. Pinto, J. M. Serra, M Lisboa Campo Grande, 1749-016 Lisboa, Portugal ABSTRACT: : In this paper we report our first results on solar cells made on silicon ribbons obtained by a two-step process: pre-ribbons obtained by CVD followed

Lisbon, University of

270

T-651: Blue Coat ProxySG Discloses Potentially Sensitive Information in Core Files  

Broader source: Energy.gov [DOE]

A vulnerability was reported in Blue Coat ProxySG. A local user can obtain potentially sensitive information

271

REACT: Alternatives to Critical Materials in Magnets  

SciTech Connect (OSTI)

REACT Project: The 14 projects that comprise ARPA-E’s REACT Project, short for “Rare Earth Alternatives in Critical Technologies”, are developing cost-effective alternatives to rare earths, the naturally occurring minerals with unique magnetic properties that are used in electric vehicle (EV) motors and wind generators. The REACT projects will identify low-cost and abundant replacement materials for rare earths while encouraging existing technologies to use them more efficiently. These alternatives would facilitate the widespread use of EVs and wind power, drastically reducing the amount of greenhouse gases released into the atmosphere.

None

2012-01-01T23:59:59.000Z

272

Fuel Cells for Critical Communications Backup Power  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeatMulti-Dimensional ElectricalEnergy FrozenNovember 10, 2014 2014for Critical

273

Nuclear Criticality Safety | More Science | ORNL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the ContributionsArms Control R&D Consortium includes Los Alamos April 7,Criticality

274

CANISTER HANDLING FACILITY CRITICALITY SAFETY CALCULATIONS  

SciTech Connect (OSTI)

This design calculation revises and updates the previous criticality evaluation for the canister handling, transfer and staging operations to be performed in the Canister Handling Facility (CHF) documented in BSC [Bechtel SAIC Company] 2004 [DIRS 167614]. The purpose of the calculation is to demonstrate that the handling operations of canisters performed in the CHF meet the nuclear criticality safety design criteria specified in the ''Project Design Criteria (PDC) Document'' (BSC 2004 [DIRS 171599], Section 4.9.2.2), the nuclear facility safety requirement in ''Project Requirements Document'' (Canori and Leitner 2003 [DIRS 166275], p. 4-206), the functional/operational nuclear safety requirement in the ''Project Functional and Operational Requirements'' document (Curry 2004 [DIRS 170557], p. 75), and the functional nuclear criticality safety requirements described in the ''Canister Handling Facility Description Document'' (BSC 2004 [DIRS 168992], Sections 3.1.1.3.4.13 and 3.2.3). Specific scope of work contained in this activity consists of updating the Category 1 and 2 event sequence evaluations as identified in the ''Categorization of Event Sequences for License Application'' (BSC 2004 [DIRS 167268], Section 7). The CHF is limited in throughput capacity to handling sealed U.S. Department of Energy (DOE) spent nuclear fuel (SNF) and high-level radioactive waste (HLW) canisters, defense high-level radioactive waste (DHLW), naval canisters, multicanister overpacks (MCOs), vertical dual-purpose canisters (DPCs), and multipurpose canisters (MPCs) (if and when they become available) (BSC 2004 [DIRS 168992], p. 1-1). It should be noted that the design and safety analyses of the naval canisters are the responsibility of the U.S. Department of the Navy (Naval Nuclear Propulsion Program) and will not be included in this document. In addition, this calculation is valid for the current design of the CHF and may not reflect the ongoing design evolution of the facility. However, it is anticipated that design changes to the facility layout will have little or no impact on the criticality results and/or conclusions presented in this document. This calculation is subject to the ''Quality Assurance Requirements and Description'' (DOE 2004 [DIRS 171539]) because the CHF is included in the Q-List (BSC 2005 [DIRS 171190], p. A-3) as an item important to safety. This calculation is prepared in accordance with AP-3.12Q, ''Design Calculations and Analyses'' [DIRS 168413].

C.E. Sanders

2005-04-07T23:59:59.000Z

275

Critical phenomena in N=4 SYM plasma  

E-Print Network [OSTI]

Strongly coupled N=4 supersymmetric Yang-Mills plasma at finite temperature and chemical potential for an R-symmetry charge undergoes a second order phase transition. We demonstrate that this phase transition is of the mean field theory type. We explicitly show that the model is in the dynamical universality class of 'model B' according to the classification of Hohenberg and Halperine, with dynamical critical exponent z=4. We study bulk viscosity in the mass deformed version of this theory in the vicinity of the phase transition. We point out that all available models of bulk viscosity at continuous phase transition are in conflict with our explicit holographic computations.

Alex Buchel

2010-05-05T23:59:59.000Z

276

Critical Materials Hub | Department of Energy  

Office of Environmental Management (EM)

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277

Total absorption by degenerate critical coupling  

SciTech Connect (OSTI)

We consider a mirror-symmetric resonator with two ports. We show that, when excited from a single port, complete absorption can be achieved through critical coupling to degenerate resonances with opposite symmetry. Moreover, any time two resonances with opposite symmetry are degenerate in frequency and absorption is always significantly enhanced. In contrast, when two resonances with the same symmetry are nearly degenerate, there is no absorption enhancement. We numerically demonstrate these effects using a graphene monolayer on top of a photonic crystal slab, illuminated from a single side in the near-infrared.

Piper, Jessica R., E-mail: jrylan@stanford.edu; Liu, Victor; Fan, Shanhui, E-mail: shanhui@stanford.edu [Ginzton Laboratory, Department of Electrical Engineering, Stanford University, Stanford, California 94305 (United States)

2014-06-23T23:59:59.000Z

278

Influence of the ab-initio nd cross sections in the critical heavy-water benchmarks  

E-Print Network [OSTI]

The n-d elastic and breakup cross sections are computed by solving the three-body Faddeev equations for realistic and semi-realistic Nucleon-Nucleon potentials. These cross sections are inserted in the Monte Carlo simulation of the nuclear processes considered in the International Handbook of Evaluated Criticality Safety Benchmark Experiments (ICSBEP). The results obtained using thes ab initio n-d cross sections are compared with those provided by the most renown international libraries.

B. Morillon; R. Lazauskas; J. Carbonell

2013-11-15T23:59:59.000Z

279

Influence of the ab-initio nd cross sections in the critical heavy-water benchmarks  

E-Print Network [OSTI]

The n-d elastic and breakup cross sections are computed by solving the three-body Faddeev equations for realistic and semi-realistic Nucleon-Nucleon potentials. These cross sections are inserted in the Monte Carlo simulation of the nuclear processes considered in the International Handbook of Evaluated Criticality Safety Benchmark Experiments (ICSBEP). The results obtained using thes ab initio n-d cross sections are compared with those provided by the most renown international libraries.

Morillon, B; Carbonell, J

2013-01-01T23:59:59.000Z

280

Weak magnetic field effects on chiral critical temperature in a nonlocal Nambu--Jona-Lasinio model  

E-Print Network [OSTI]

In this article we study the nonlocal Nambu--Jona-Lasinio model with a Gaussian regulator in the chiral limit. Finite temperature effects and the presence of a homogeneous magnetic field are considered. The magnetic evolution of the critical temperature for chiral symmetry restoration is then obtained. Here we restrict ourselves to the case of low magnetic field values, being this a complementary discussion to the exisiting analysis in nonlocal models in the strong magnetic field regime.

M. Loewe; F. Marquez; C. Villavicencio; R. Zamora

2014-10-27T23:59:59.000Z

Note: This page contains sample records for the topic "obtain information critical" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Documentation Integrity for Safety-Critical Applications: The COHERE Project  

E-Print Network [OSTI]

. Keywords Authoring interface, documentation integrity, consistency 1. INTRODUCTION This paper reportsDocumentation Integrity for Safety-Critical Applications: The COHERE Project David G. Novick-critical systems. Following a set of documentation integrity maxims, the project developed two generations

Novick, David G.

282

NIST Roadmap for Improving Critical Infrastructure Cybersecurity February 12, 2014  

E-Print Network [OSTI]

NIST Roadmap for Improving Critical Infrastructure Cybersecurity February 12, 2014 1. Introduction This companion Roadmap to the Framework for Improving Critical Infrastructure Cybersecurity ("the Framework, which has been moved to this document. 2. Evolution of the Cybersecurity Framework Since

283

Hydrogen Fuel Cells Providing Critical Backup Power | Department...  

Broader source: Energy.gov (indexed) [DOE]

Fuel Cells Providing Critical Backup Power Hydrogen Fuel Cells Providing Critical Backup Power April 9, 2010 - 3:43pm Addthis Customers of AT&T Wireless and Pacific Gas & Electric...

284

Critical length limiting super-low friction  

E-Print Network [OSTI]

Since the demonstration of super-low friction (superlubricity) in graphite at nanoscale, one of the main challenges in the field of nano- and micro-mechanics was to scale this phenomenon up. A key question to be addressed is to what extent superlubricity could persist, and what mechanisms could lead to its failure. Here, using an edge-driven Frenkel-Kontorova model, we establish a connection between the critical length above which superlubricity disappears and both intrinsic material properties and experimental parameters. A striking boost in dissipated energy with chain length emerges abruptly due to a high-friction stick-slip mechanism caused by deformation of the slider leading to a local commensuration with the substrate lattice. We derived a parameter-free analytical model for the critical length that is in excellent agreement with our numerical simulations. Our results provide a new perspective on friction and nano-manipulation and can serve as a theoretical basis for designing nano-devices with super-low friction, such as carbon nanotubes.

Ming Ma; Andrea Benassi; Andrea Vanossi; Michael Urbakh

2015-01-02T23:59:59.000Z

285

Teaching Against Tradition: Historical Preludes to Critical Pedagogy  

E-Print Network [OSTI]

Page IV DISSENT FROM DIDACTICISM: CRITICAL PEDAGOGIES IN EIGHTEENTH-CENTURY ENGLISH DISSENTING ACADEMIES ............................................................................. 119 A History...

Thomas, Brad 1974-

2012-09-27T23:59:59.000Z

286

CMI Affiliate Members | Critical Materials Institute  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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287

CMI Develops Outreach Resources | Critical Materials Institute  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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288

CMI Education and Outreach | Critical Materials Institute  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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289

CMI Grand Challenge Problems | Critical Materials Institute  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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290

CMI Industry Survey | Critical Materials Institute  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation InInformationCenterResearchCASL Symposium: Celebrating theCEFRC

291

CMI Membership Benefits | Critical Materials Institute  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation InInformationCenterResearchCASL Symposium: Celebrating theCEFRCBenefits Benefits of CMI

292

CMI Membership Program | Critical Materials Institute  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation InInformationCenterResearchCASL Symposium: Celebrating theCEFRCBenefits Benefits of

293

CMI Success Stories | Critical Materials Institute  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation InInformationCenterResearchCASL Symposium: Celebrating theCEFRCBenefits BenefitsCMI

294

CMI Team Members | Critical Materials Institute  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation InInformationCenterResearchCASL Symposium: Celebrating theCEFRCBenefits BenefitsCMITeam

295

Comments/Questions | Critical Materials Institute  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation InInformationCenterResearchCASLNanoporous Materials | Center Upcoming Eventshourly

296

Information Security  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

This Manual establishes security requirements for the protection and control of information and matter required to be classified or controlled by statutes, regulations, or Department of Energy directives. Attachment E, Technical Surveillance Countermeasures Program, is for Official Use Only. Contact the Office of Security and Safety Performance Assurance at 301-903-3653 if your official duties require you to have access to this part of the directive. Cancels: DOE M 471.2-1B, DOE M 471.2-1C, DOE M 471.2-4, and DOE O 471.2A.

2005-08-26T23:59:59.000Z

297

Information Security  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

Establishes security requirements for the protection and control of information and matter required to be classified or controlled by statutes, regulations, or Department of Energy directives. Section E, Technical Surveillance Countermeasures Program, is Official Use Only. Please contact the DOE Office of Health, Safety and Security at 301-903-0292 if your official duties require you to have access to this part of the directive. Cancels: DOE M 471.2-1B, DOE M 471.2-1C, DOE M 471.2-4, and DOE O 471.2A

2007-06-29T23:59:59.000Z

298

Ordering Information  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines AboutDecember 2005 (Thousand9,0,InformationU.S. Crude Oil3113315,0,482272Oil and9:-coal

299

Ordering Information  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines AboutDecember 2005 (Thousand9,0,InformationU.S. Crude Oil3113315,0,482272Oil and9:-coalI,

300

Ordering Information  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines AboutDecember 2005 (Thousand9,0,InformationU.S. Crude Oil3113315,0,482272Oil

Note: This page contains sample records for the topic "obtain information critical" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Information Science  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun withconfinementEtching.348ASSEMBLYInfluenceInformation

302

Information Repository  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest Region service area.Portaldefault Sign In AboutIn theIndustry

303

User Information  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest RegionatSearchScheduledProductionCCEIResearch UpperFacilities atGuideUser

304

Safety Lifecycle for Developing Safety Critical Artificial Neural Networks  

E-Print Network [OSTI]

Safety Lifecycle for Developing Safety Critical Artificial Neural Networks Zeshan Kurd, Tim Kelly. There are many techniques that aim to improve the performance of neural networks for safety-critical systems. Consequently, their role in safety-critical applications, if any, is typically restricted to advisory systems

Kelly, Tim

305

COT 4930/5930 Security for infrastructure systems Critical infrastructure are the systems that support our everyday life and the Dept. of  

E-Print Network [OSTI]

which our normal life is not possible. This information is embodied in a process control system (PCS Infrastructure. Features and requirements. Standards. Requirements. Process control systems, information systemsCOT 4930/5930 Security for infrastructure systems Critical infrastructure are the systems

Richman, Fred

306

IUPAC critical evaluation of the rotationalvibrational spectra of water vapor. Part I--Energy levels and transition wavenumbers  

E-Print Network [OSTI]

Keywords: Water vapor Transition wavenumbers Atmospheric physics Energy levels MARVEL Information systemIUPAC critical evaluation of the rotational­vibrational spectra of water vapor. Part I--Energy levels and transition wavenumbers for H2 17 O and H2 18 O Jonathan Tennyson a,Ã, Peter F. Bernath b

Chance, Kelly

307

FSC has 'failed the world's forests' say critics FSC has 'failed the world's forests' say critics  

E-Print Network [OSTI]

a variety of environmental organizations. The FSC is an international not-for-profit organization for slipping standards The Forest Stewardship Council (FSC) has come under increasingly harsh criticisms from environmental organizations like World Rainforest Movement and Ecological Internet are putting the organization

308

Bayesian Policy Gradient and Actor-Critic Algorithms Bayesian Policy Gradient and Actor-Critic Algorithms  

E-Print Network [OSTI]

Bayesian Policy Gradient and Actor-Critic Algorithms Bayesian Policy Gradient and Actor Yaakov Engel yakiengel@gmail.com Editor: Abstract Policy gradient methods are reinforcement learning algorithms that adapt a param- eterized policy by following a performance gradient estimate. Many

Paris-Sud XI, Université de

309

Sensitive Chemical Compass Assisted by Quantum Criticality  

E-Print Network [OSTI]

The radical-pair-based chemical reaction could be used by birds for the navigation via the geomagnetic direction. An inherent physical mechanism is that the quantum coherent transition from a singlet state to triplet states of the radical pair could response to the weak magnetic field and be sensitive to the direction of such a field and then results in different photopigments in the avian eyes to be sensed. Here, we propose a quantum bionic setup for the ultra-sensitive probe of a weak magnetic field based on the quantum phase transition of the environments of the two electrons in the radical pair. We prove that the yield of the chemical products via the recombination from the singlet state is determined by the Loschmidt echo of the environments with interacting nuclear spins. Thus quantum criticality of environments could enhance the sensitivity of the detection of the weak magnetic field.

C. Y. Cai; Qing Ai; H. T. Quan; C. P. Sun

2011-05-12T23:59:59.000Z

310

Electron stars for holographic metallic criticality  

SciTech Connect (OSTI)

We refer to the ground state of a gravitating, charged ideal fluid of fermions held at a finite chemical potential as an ''electron star.'' In a holographic setting, electron stars are candidate gravity duals for strongly interacting finite fermion density systems. We show how electron stars develop an emergent Lifshitz scaling at low energies. This IR scaling region is a consequence of the two-way interaction between emergent quantum critical bosonic modes and the finite density of fermions. By integrating from the IR region to an asymptotically AdS{sub 4} spacetime, we compute basic properties of the electron stars, including their electrical conductivity. We emphasize the challenge of connecting UV and IR physics in strongly interacting finite density systems.

Hartnoll, Sean A.; Tavanfar, Alireza [Center for the Fundamental Laws of Nature, Harvard University, Cambridge, Massachusetts 02138 (United States)

2011-02-15T23:59:59.000Z

311

Geometrically induced magnetic catalysis and critical dimensions  

E-Print Network [OSTI]

We discuss the combined effect of magnetic fields and geometry in interacting fermionic systems. At leading order in the heat-kernel expansion, the infrared singularity (that in flat space leads to the magnetic catalysis) is regulated by the chiral gap effect and the catalysis is deactivated by effect of the curvature. We discover that an infrared singularity may reappear from higher-order terms in the heat kernel expansion leading to a novel form of geometrically induced magnetic catalysis (absent in flat space). The dynamical mass squared is then modified not only due to the chiral gap effect by an amount proportional to the curvature, but also by a magnetic shift $\\propto (4-D)eB$ where $D$ represents the number of space-time dimensions. We argue that $D=4$ is a critical dimension across which the behaviour of the magnetic shift changes qualitatively.

Antonino Flachi; Kenji Fukushima; Vincenzo Vitagliano

2015-02-21T23:59:59.000Z

312

Geometrically induced magnetic catalysis and critical dimensions  

E-Print Network [OSTI]

We discuss the combined effect of magnetic fields and geometry in interacting fermionic systems. At leading order in the heat-kernel expansion, the infrared singularity (that in flat space leads to the magnetic catalysis) is regulated by the chiral gap effect and the catalysis is deactivated by effect of the curvature. We discover that an infrared singularity may reappear from higher-order terms in the heat kernel expansion leading to a novel form of geometrically induced magnetic catalysis (absent in flat space). The dynamical mass squared is then modified not only due to the chiral gap effect by an amount proportional to the curvature, but also by a magnetic shift $\\propto (4-D)eB$ where $D$ represents the number of space-time dimensions. We argue that $D=4$ is a critical dimension across which the behaviour of the magnetic shift changes qualitatively.

Flachi, Antonino; Vitagliano, Vincenzo

2015-01-01T23:59:59.000Z

313

Electron stars for holographic metallic criticality  

E-Print Network [OSTI]

We refer to the ground state of a gravitating, charged ideal fluid of fermions held at a finite chemical potential as an `electron star'. In a holographic setting, electron stars are candidate gravity duals for strongly interacting finite fermion density systems. We show how electron stars develop an emergent Lifshitz scaling at low energies. This IR scaling region is a consequence of the two way interaction between emergent quantum critical bosonic modes and the finite density of fermions. By integrating from the IR region to an asymptotically AdS_4 spacetime, we compute basic properties of the electron stars, including their electrical conductivity. We emphasize the challenge of connecting UV and IR physics in strongly interacting finite density systems.

Sean A. Hartnoll; Alireza Tavanfar

2011-01-06T23:59:59.000Z

314

Critical review of naphthenic acid corrosion  

SciTech Connect (OSTI)

Naphthenic acid corrosion continues to be a reliability issue in refinery distillation units. A review of the subject is presented herein with special focus on field and laboratory data and on areas where research is needed. The review shows that several parameters are known to affect the corrosion process and their individual effect on crude corrosivity are somewhat understood. However, their combined effect is still subject to much controversy. The determination of a critical factor--naphthenic acid content--is still not standardized. It is shown herein that, by arranging the literature findings into three groups (1) furnace tubes and transfer lines, (2) vacuum column and (3) side cut piping, a better agreement of the literature data is achieved.

Tebbal, S. [SET Labs., Inc., Stafford, TX (United States)

1999-11-01T23:59:59.000Z

315

Thermal criticality in a repository environment  

SciTech Connect (OSTI)

This report explores a scenario in which burial containers fail and fissile material is transported through the tuff by water to some location, away from the burial site, where an over-moderated critical mass gradually accumulates. Because of the low solubilities of plutonium and uranium, and the low ground water velocities, the analysis shows that such a scenario with {sup 239}Pu is probably impossible because the time required to accumulate a critical mass is large compared with the half-life of the {sup 239}Pu. In the case of {sup 235}U, the analysis indicates that the accumulation rates are so low that relatively small fission power levels would consume the {sup 235}U as fast as it accumulates, and that the thermal conductivity of the tuff is large enough to prevent a significant increase in temperature. Thus, the conditions for the removal of water by boiling and the associated autocatalytic increase in reactivity are not met in the case of {sup 235}U. An explosive release of energy does not appear to be possible. A simple water voiding model, which allows water removal at about the fastest possible rate, was used to explore a scenario in which the fuel accumulation rate was arbitrarily increased enough to cause water boiling and the associated dryout of the tuff. Calculations for this case indicate that disruption of the tuff, leading to a neutronic shutdown, would probably occur before an explosive energy release could be generated. Additional scenarios, which should be investigated in future work are identified.

Morris, E.E.

1995-11-01T23:59:59.000Z

316

Grid Information Security Functional Requirement - Fulfilling Information Security of a Smart Grid System  

E-Print Network [OSTI]

This paper describes the background of smart information infrastructure and the needs for smart grid information security. It introduces the conceptual analysis to the methodology with the application of hermeneutic circle and information security functional requirement identification. Information security for the grid market cover matters includes automation and communications industry that affects the operation of electric power systems and the functioning of the utilities that manage them and its awareness of this information infrastructure has become critical to the reliability of the power system. Community benefits from of cost savings, flexibility and deployment along with the establishment of wireless communications. However, concern revolves around the security protections for easily accessible devices such as the smart meter and the related communications hardware. On the other hand, the changing points between traditional versus smart grid networking trend and the information security importance on...

Ling, Amy Poh Ai; 10.5121/ijgca.2011.2201

2011-01-01T23:59:59.000Z

317

National Criticality Experiments Research Center: Capability and Status  

SciTech Connect (OSTI)

After seven years, the former Los Alamos Critical Experiments Facility (LACEF), or Pajarito Site, has reopened for business as the National Criticality Experiments Research Center (NCERC) at the Nevada National Security Site (NNSS). Four critical assembly machines (Comet, Planet, Flat-Top, and Godiva-IV) made the journey from Los Alamos to the NNSS. All four machines received safety system upgrades along with new digital control systems. Between these machines, systems ranging from the thermal through the intermediate to the fast spectrum may be assembled. Steady-State, transient, and super-prompt critical conditions may be explored. NCERC is the sole remaining facility in the United States capable of conducting general-purpose nuclear materials handling including the construction and operation of high-multiplication assemblies, delayed critical assemblies, and prompt critical assemblies. Reconstitution of the unique capabilities at NCERC ensures the viability of (1) The Nuclear Renaissance, (2) Stockpile Stewardship, and (3) and the next generation of criticality experimentalists.

Hayes, David K. [Los Alamos National Laboratory; Myers, William L. [Los Alamos National Laboratory

2012-07-12T23:59:59.000Z

318

Transient critical heat flux and blowdown heat-transfer studies  

SciTech Connect (OSTI)

Objective of this study is to give a best-estimate prediction of transient critical heat flux (CHF) during reactor transients and hypothetical accidents. To accomplish this task, a predictional method has been developed. Basically it involves the thermal-hydraulic calculation of the heated core with boundary conditions supplied from experimental measurements. CHF predictions were based on the instantaneous ''local-conditions'' hypothesis, and eight correlations (consisting of round-tube, rod-bundle, and transient correlations) were tested against most recent blowdown heat-transfer test data obtained in major US facilities. The prediction results are summarized in a table in which both CISE and Biasi correlations are found to be capable of predicting the early CHF of approx. 1 s. The Griffith-Zuber correlation is credited for its prediction of the delay CHF that occurs in a more tranquil state with slowly decaying mass velocity. In many instances, the early CHF can be well correlated by the x = 1.0 criterion; this is certainly indicative of an annular-flow dryout-type crisis. The delay CHF occurred at near or above 80% void fraction, and the success of the modified Zuber pool-boiling correlation suggests that this CHF is caused by flooding and pool-boiling type hydrodynamic crisis.

Leung, J.C.

1980-05-01T23:59:59.000Z

319

Critical charges on strange quark nuggets and other extended objects  

SciTech Connect (OSTI)

We investigate the behavior of the critical charge for spontaneous pair production, Z{sub C}, defined as the charge at which the total energy of a K-shell electron is E=-m{sub e}, as a function of the radius R of the charge distribution. Our approach is to solve the Dirac equation for a potential V(r) consisting of a spherically symmetrical charge distribution of radius R and a Coulomb tail. For a spherical shell distribution of the type usually associated with color-flavor locked strange quark nuggets, we confirm the relation Z{sub C}=0.71R (fm) for sufficiently large R obtained by Madsen, who used an approach based on the Thomas-Fermi model. We also present results for a uniformly charged sphere and again find that Z{sub C}{approx}R for large enough R. Also discussed is the behavior of Z{sub C} when simple ad hoc modifications are made to the potential for 0{<=}r

Dicus, Duane A. [Physics Department, University of Texas, Austin, Texas 78712 (United States); Repko, Wayne W. [Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824 (United States); Teplitz, V. L. [NASA Goddard Space Flight Center, Greenbelt, Maryland 20771 (United States); Physics Department, Southern Methodist University, Dallas, Texas 75275 (United States)

2008-11-01T23:59:59.000Z

320

Critical Materials Institute Affiliates Program MEMBER AGREEMENT  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to User GroupInformationE-GovNatural

Note: This page contains sample records for the topic "obtain information critical" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Quantum information with modular variables  

E-Print Network [OSTI]

We introduce a novel strategy, based on the use of modular variables, to encode and deterministically process quantum information using states described by continuous variables. Our formalism leads to a general recipe to adapt existing quantum information protocols, originally formulated for finite dimensional quantum systems, to infinite dimensional systems described by continuous variables. This is achieved by using non unitary and non-gaussian operators, obtained from the superposition of gaussian gates, together with adaptative manipulations in qubit systems defined in infinite dimensional Hilbert spaces. We describe in details the realization of single and two qubit gates and briefly discuss their implementation in a quantum optical set-up.

A. Ketterer; S. P. Walborn; A. Keller; T. Coudreau; P. Milman

2014-06-24T23:59:59.000Z

322

Method and apparatus for obtaining enhanced production rate of thermal chemical reactions  

DOE Patents [OSTI]

Reactors and processes are disclosed that can utilize high heat fluxes to obtain fast, steady-state reaction rates. Porous catalysts used in conjunction with microchannel reactors to obtain high rates of heat transfer are also disclosed. Reactors and processes that utilize short contact times, high heat flux and low pressure drop are described. Improved methods of steam reforming are also provided.

Tonkovich, Anna Lee Y. (Pasco, WA); Wang, Yong (Richland, WA); Wegeng, Robert S. (Richland, WA); Gao, Yufei (Kennewick, WA)

2006-05-16T23:59:59.000Z

323

Method and apparatus for obtaining enhanced production rate of thermal chemical reactions  

DOE Patents [OSTI]

Reactors and processes are disclosed that can utilize high heat fluxes to obtain fast, steady-state reaction rates. Porous catalysts used in conjunction with microchannel reactors to obtain high rates of heat transfer are also disclosed. Reactors and processes that utilize short contact times, high heat flux and low pressure drop are described. Improved methods of steam reforming are also provided.

Tonkovich, Anna Lee; Wang, Yong; Wegeng, Robert S.; Gao, Yufei

2003-09-09T23:59:59.000Z

324

Instructions to obtain apostille certification of the FBI background check (Valencia Year-Long Students)  

E-Print Network [OSTI]

Instructions to obtain apostille certification of the FBI background check (Valencia Year-Long Students) Once you have received the FBI background check. You will need to proceed with step two, obtain not waste time submitting your FBI Background Check for certification. 1.) Complete the DS-4194 Request

Hull, Elaine

325

The chemistry of minerals obtained from the combustion of Jordanian oil shale  

E-Print Network [OSTI]

The chemistry of minerals obtained from the combustion of Jordanian oil shale Awni Y. Al was performed on the spent oil shale (oil shale ash) obtained from the combustion of Jordanian oil shale process, minimal fragmentation was encountered since Jordanian oil shale contains large proportions of ash

Shawabkeh, Reyad A.

326

Interfacial and colloidal behavior of asphaltenes obtained from Brazilian crude oils  

E-Print Network [OSTI]

Interfacial and colloidal behavior of asphaltenes obtained from Brazilian crude oils Anto present new data on the interfacial and colloidal behavior of asphaltenes in model aromatic solvents, inhibition of deposition and emulsion stabilization capacities for two types of asphaltenes obtained from

Loh, Watson

327

Manipulating surface diffusion and elastic interactions to obtain quantum dot multilayer arrangements over different length scales  

SciTech Connect (OSTI)

An innovative multilayer growth of InAs quantum dots on GaAs(100) is demonstrated to lead to self-aggregation of correlated quantum dot chains over mesoscopic distances. The fundamental idea is that at critical growth conditions is possible to drive the dot nucleation only at precise locations corresponding to the local minima of the Indium chemical potential. Differently from the known dot multilayers, where nucleation of new dots on top of the buried ones is driven by the surface strain originating from the dots below, here the spatial correlations and nucleation of additional dots are mostly dictated by a self-engineering of the surface occurring during the growth, close to the critical conditions for dot formation under the fixed oblique direction of the incoming As flux, that drives the In surface diffusion.

Placidi, E., E-mail: ernesto.placidi@ism.cnr.it; Arciprete, F. [Istituto di Struttura della Materia, CNR, Via del Fosso del Cavaliere 100, 00133 Rome (Italy); Università di Roma “Tor Vergata”, Dipartimento di Fisica, via della Ricerca Scientifica 1, 00133 Rome (Italy); Latini, V.; Latini, S.; Patella, F. [Università di Roma “Tor Vergata”, Dipartimento di Fisica, via della Ricerca Scientifica 1, 00133 Rome (Italy); Magri, R. [Dipartimento di Scienze Fisiche, Informatiche e Matematiche (FIM), Università di Modena e Reggio Emilia, and Centro S3 CNR-Istituto Nanoscienze, Via Campi 213/A, 4100 Modena (Italy); Scuderi, M.; Nicotra, G. [CNR-IMM, Strada VIII, 5, 95121 Catania (Italy)

2014-09-15T23:59:59.000Z

328

Validation of Nuclear Criticality Safety Software and 27 energy group ENDF/B-IV cross sections  

SciTech Connect (OSTI)

The validation documented in this report is based on calculations that were executed during June through August 1992, and was completed in June 1993. The statistical analyses in Appendix C and Appendix D were completed in October 1993. This validation gives Portsmouth NCS personnel a basis for performing computerized KENO V.a calculations using the Martin Marietta Nuclear Criticality Safety Software. The first portion of the document outlines basic information in regard to validation of NCSS using ENDF/B-IV 27-group cross sections on the IBM 3090 at ORNL. A basic discussion of the NCSS system is provided, some discussion on the validation database and validation in general. Then follows a detailed description of the statistical analysis which was applied. The results of this validation indicate that the NCSS software may be used with confidence for criticality calculations at the Portsmouth Gaseous Diffusion Plant. When the validation results are treated as a single group, there is 95% confidence that 99.9% of future calculations of similar critical systems will have a calculated K{sub eff} > 0.9616. Based on this result the Portsmouth Nuclear Criticality Safety Department has adopted the calculational acceptance criteria that a k{sub eff} + 2{sigma} {le} 0.95 is safety subcritical. The validation of NCSS on the IBM 3090 at ORNL was extended to include NCSS on the IBM 3090 at K-25.

Lee, B.L. Jr.

1994-08-01T23:59:59.000Z

329

A RE-INTRODUCTION TO ANOMALIES OF CRITICALITY  

SciTech Connect (OSTI)

In 1974, a small innocuous document was submitted to the American Nuclear Society's Criticality Safety Division for publication that would have lasting impacts on this nuclear field The author was Duane Clayton, manager of the Battelle Pacific Northwest National Laboratory's Critical Mass Lab, the world's preeminent reactor critical experimenter with plutonium solutions. The document was entitled, 'Anomalies of Criticality'. 'Anomalies...' was a compilation of more than thirty separate and distinct examples of departures from what might be commonly expected in the field of nuclear criticality. Mr. Clayton's publication was the derivative of more than ten thousand experiments and countless analytical studies conducted world-wide on every conceivable reactor system imaginable: from fissile bearing solutions to solids, blocks to arrays of fuel rods, low-enriched uranium oxide systems to pure plutonium and highly enriched uranium systems. After publication, the document was commonly used within the nuclear fuel cycle and reactor community to train potential criticality/reactor analysts, experimenters and fuel handlers on important things for consideration when designing systems with critically 'safe' parameters in mind The purpose of this paper is to re-introduce 'Anomalies of Criticality' to the current Criticality Safety community and to add new 'anomalies' to the existing compendium. By so doing, it is the authors' hope that a new generation of nuclear workers and criticality engineers will benefit from its content and might continue to build upon this work in support of the nuclear renaissance that is about to occur.

PUIGH RJ

2009-09-09T23:59:59.000Z

330

National Environmental Information Infrastructure  

E-Print Network [OSTI]

National Environmental Information Infrastructure: Reference Architecture Contributing Information Infrastructure: Reference Architecture v1.1 Environmental Information Programme Publication Series: Reference Architecture, Environmental Information Programme Publication Series, document no. 4, Bureau

Greenslade, Diana

331

Consolidated fuel reprocessing program: Criticality experiments with fast test reactor fuel pins in an organic moderator  

SciTech Connect (OSTI)

The results obtained in a series of criticality experiments performed as part of a joint program on criticality data development between the United States Department of Energy and the Power Reactor and Nuclear Fuel Development Corporation of Japan are presented in this report along with a complete description of the experiments. The experiments involved lattices of Fast Test Reactor (FTR) fuel pins in an organic moderator mixture similar to that used in the solvent extraction stage of fuel reprocessing. The experiments are designed to provide data for direct comparison with previously performed experimental measurements with water moderated lattices of FTR fuel pins. The same lattice arrangements and FTR fuel pin types are used in these organic moderated experimental assemblies as were used in the water moderated experiments. The organic moderator is a mixture of 38 wt % tributylphosphate in a normal paraffin hydrocarbon mixture of C{sub 11}H{sub 24} to C{sub 15}H{sub 32} molecules. Critical sizes of 1054.8, 599.2, 301.8, 199.5 and 165.3 fuel pins were obtained respectively for organic moderated lattices having 0.761 cm, 0.968 cm, 1.242 cm, 1.537 cm and 1.935 cm square lattice pitches as compared to 1046.9, 571.9, 293.9, 199.7 and 165.1 fuel pins for the same lattices water moderated.

Bierman, S.R.

1986-12-01T23:59:59.000Z

332

Information integration for data fusion  

SciTech Connect (OSTI)

Data fusion has been identified by the Department of Defense as a critical technology for the U.S. defense industry. Data fusion requires combining expertise in two areas - sensors and information integration. Although data fusion is a rapidly growing area, there is little synergy and use of common, reusable, and/or tailorable objects and models, especially across different disciplines. The Laboratory-Directed Research and Development project had two purposes: to see if a natural language-based information modeling methodology could be used for data fusion problems, and if so, to determine whether this methodology would help identify commonalities across areas and achieve greater synergy. The project confirmed both of the initial hypotheses: that the natural language-based information modeling methodology could be used effectively in data fusion areas and that commonalities could be found that would allow synergy across various data fusion areas. The project found five common objects that are the basis for all of the data fusion areas examined: targets, behaviors, environments, signatures, and sensors. Many of the objects and the specific facts related to these objects were common across several areas and could easily be reused. In some cases, even the terminology remained the same. In other cases, different areas had their own terminology, but the concepts were the same. This commonality is important with the growing use of multisensor data fusion. Data fusion is much more difficult if each type of sensor uses its own objects and models rather than building on a common set. This report introduces data fusion, discusses how the synergy generated by this LDRD would have benefited an earlier successful project and contains a summary information model from that project, describes a preliminary management information model, and explains how information integration can facilitate cross-treaty synergy for various arms control treaties.

Bray, O.H.

1997-01-01T23:59:59.000Z

333

Improved dose estimates for nuclear criticality accidents  

SciTech Connect (OSTI)

Slide rules are improved for estimating doses and dose rates resulting from nuclear criticality accidents. The original slide rules were created for highly enriched uranium solutions and metals using hand calculations along with the decades old Way-Wigner radioactive decay relationship and the inverse square law. This work uses state-of-the-art methods and better data to improve the original slide rules and also to extend the slide rule concept to three additional systems; i.e., highly enriched (93.2 wt%) uranium damp (H/{sup 235}U = 10) powder (U{sub 3}O{sub 8}) and low-enriched (5 wt%) uranium mixtures (UO{sub 2}F{sub 2}) with a H/{sup 235}U ratio of 200 and 500. Although the improved slide rules differ only slightly from the original slide rules, the improved slide rules and also the new slide rules can be used with greater confidence since they are based on more rigorous methods and better nuclear data.

Wilkinson, A.D.; Basoglu, B.; Bentley, C.L.; Dunn, M.E.; Plaster, M.J.; Dodds, H.L. [Univ. of Tennessee, Knoxville, TN (United States). Nuclear Engineering Dept.; Haught, C.F. [Martin Marietta Utility Systems, Piketon, OH (United States); Yamamoto, T. [Japan Atomic Energy Research Inst., Tokai (Japan). Tokai Research Establishment; Hopper, C.M. [Oak Ridge National Lab., TN (United States)

1995-08-01T23:59:59.000Z

334

Critical infrastructure systems of systems assessment methodology.  

SciTech Connect (OSTI)

Assessing the risk of malevolent attacks against large-scale critical infrastructures requires modifications to existing methodologies that separately consider physical security and cyber security. This research has developed a risk assessment methodology that explicitly accounts for both physical and cyber security, while preserving the traditional security paradigm of detect, delay, and respond. This methodology also accounts for the condition that a facility may be able to recover from or mitigate the impact of a successful attack before serious consequences occur. The methodology uses evidence-based techniques (which are a generalization of probability theory) to evaluate the security posture of the cyber protection systems. Cyber threats are compared against cyber security posture using a category-based approach nested within a path-based analysis to determine the most vulnerable cyber attack path. The methodology summarizes the impact of a blended cyber/physical adversary attack in a conditional risk estimate where the consequence term is scaled by a ''willingness to pay'' avoidance approach.

Sholander, Peter E.; Darby, John L.; Phelan, James M.; Smith, Bryan; Wyss, Gregory Dane; Walter, Andrew; Varnado, G. Bruce; Depoy, Jennifer Mae

2006-10-01T23:59:59.000Z

335

Critical Dynamics in the Early Universe  

E-Print Network [OSTI]

Methods and concepts for the study of phase transitions mediated by a time-dependent order-parameter field in curved spacetimes are discussed. A practical example is the derivation of an effective (quasi-)potential for the description of `slow-roll' inflation in the early universe. We first summarize our early results on viewing the symmetry behavior of constant background fields in curved but static spacetimes as finite size effect, and the use of derivative expansions for constructing effective actions for slowly-varying background fields. We then introduce the notion of dynamical finite size effect to explain how an exponential expansion of the scale factor imparts a finite size to the system and how the symmetry behavior in de Sitter space can be understood qualitatively in this light. We reason why the exponential inflation can be described equivalently by a scale transformation, thus rendering this special class of dynamics as effectively static. Finally we show how, in this view, one can treat the class of `slow-roll' inflation as a dynamic perturbation off the effectively static class of exponential inflation and understand it as a dynamical critical phenomenon in cosmology.

B. L. Hu

1993-02-22T23:59:59.000Z

336

A Critical Review of Classical Bouncing Cosmologies  

E-Print Network [OSTI]

Given the proliferation of bouncing models in recent years, we gather and critically assess these proposals in a comprehensive review. The Planck data shows an unmistakably red, quasi scale-invariant, purely adiabatic primordial power spectrum and no primary non-Gaussianities. While these observations are consistent with inflationary predictions, bouncing cosmologies aspire to provide an alternative framework to explain them. Such models face many problems, both of the purely theoretical kind, such as the necessity of violating the NEC and instabilities, and at the cosmological application level, as exemplified by the possible presence of shear. We provide a pedagogical introduction to these problems and also assess the fitness of different proposals with respect to the data. For example, many models predict a slightly blue spectrum and must be fine-tuned to generate a red spectral index; as a side effect, large non-Gaussianities often result. We highlight several promising attempts to violate the NEC without introducing dangerous instabilities at the classical and/or quantum level. If primordial gravitational waves are observed, certain bouncing cosmologies, such as the cyclic scenario, are in trouble, while others remain valid. We conclude that, while most bouncing cosmologies are far from providing an alternative to the inflationary paradigm, a handful of interesting proposals have surfaced, which warrant further research. The constraints and lessons learned as laid out in this review might guide future research.

Diana Battefeld; Patrick Peter

2014-12-02T23:59:59.000Z

337

Project Information Form Project Title Assessment of Critical Barriers to Alternative and Renewable Fuel and  

E-Print Network [OSTI]

Fuel and Vehicle Deployment University UC Davis Principal Investigator Amy Jaffe Andrew Burke PI and clean fuels and ensure that associated infrastructure becomes available at a sufficient pace and scale to meet AB118/AB8 goals. Our research in this area will consider the synergies of incumbent fueling

California at Davis, University of

338

Incident and Accident Investigation techniques to Inform Model Based Design of Safety Critical Interactive Systems  

E-Print Network [OSTI]

Basnyat,S. Chozos,N. Johnson,C.W. Palanque,P. M. Harrison (ed.), Design, Specification and Verification of Interactive Systems 2005, Springer Verlag, Berlin, Germany, Lecture Notes in Computing Science 3941. pp 51-66 Springer Verlag

Basnyat, S.; Chozos, N.; Johnson, C.W.

339

E-Print Network 3.0 - additional critical experiments Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

in design process 15 additional CEF critical... Experiments - Critical and Subcritical Experiments at the Critical Experiments Facility (CEF) Now Being ... Source: Danon,...

340

U-053: Linux kexec Bugs Let Local and Remote Users Obtain Potentially...  

Broader source: Energy.gov (indexed) [DOE]

A remote user on the local network with the ability to conduct a man-in-the-middle attack can impersonate the kdump SSH server to potentially access information in vmcore dumps...

Note: This page contains sample records for the topic "obtain information critical" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

'Known Secure Sensor Measurements' for Critical Infrastructure Systems: Detecting Falsification of System State  

SciTech Connect (OSTI)

This paper describes a first investigation on a low cost and low false alarm, reliable mechanism for detecting manipulation of critical physical processes and falsification of system state. We call this novel mechanism Known Secure Sensor Measurements (KSSM). The method moves beyond analysis of network traffic and host based state information, in fact it uses physical measurements of the process being controlled to detect falsification of state. KSSM is intended to be incorporated into the design of new, resilient, cost effective critical infrastructure control systems. It can also be included in incremental upgrades of already in- stalled systems for enhanced resilience. KSSM is based on known secure physical measurements for assessing the likelihood of an attack and will demonstrate a practical approach to creating, transmitting, and using the known secure measurements for detection.

Miles McQueen; Annarita Giani

2011-09-01T23:59:59.000Z

342

Self Organized Criticality in an one dimensional magnetized grid. Application to GRB X-ray afterglows  

E-Print Network [OSTI]

A simplified one dimensional grid is used to model the evolution of magnetized plasma flow. We implement diffusion laws similar to those so-far used to model magnetic reconnection with Cellular Automata. As a novelty, we also explicitly superimpose a background flow. The aim is to numerically investigate the possibility that Self-Organized Criticality appears in a one dimensional magnetized flow. The cellular automaton's cells store information about the parameter relevant to the evolution of the system being modelled. Under the assumption that this parameter stands for the magnetic field, the magnetic energy released by one volume during one individual relaxation event is also computed. Our results show that indeed in this system Self-Organized Criticality is established. The possible applications of this model to the study of the X-ray afterglows of GRBs is also briefly considered.

Harko, Tiberiu; Stroia, Nicoleta

2015-01-01T23:59:59.000Z

343

Smart Grid Information Security (IS) Functional Requirement  

E-Print Network [OSTI]

It is important to implement safe smart grid environment to enhance people's lives and livelihoods. This paper provides information on smart grid IS functional requirement by illustrating some discussion points to the sixteen identified requirements. This paper introduces the smart grid potential hazards that can be referred as a triggering factor to improve the system and security of the entire grid. The background of smart information infrastructure and the needs for smart grid IS is described with the adoption of hermeneutic circle as methodology. Grid information technology and security-s session discusses that grid provides the chance of a simple and transparent access to different information sources. In addition, the transformation between traditional versus smart grid networking trend and the IS importance on the communication field reflects the criticality of grid IS functional requirement identification is introduces. The smart grid IS functional requirements described in this paper are general and ...

Ling, Amy Poh Ai

2011-01-01T23:59:59.000Z

344

Providing Nuclear Criticality Safety Analysis Education through Benchmark Experiment Evaluation  

SciTech Connect (OSTI)

One of the challenges that today's new workforce of nuclear criticality safety engineers face is the opportunity to provide assessment of nuclear systems and establish safety guidelines without having received significant experience or hands-on training prior to graduation. Participation in the International Criticality Safety Benchmark Evaluation Project (ICSBEP) and/or the International Reactor Physics Experiment Evaluation Project (IRPhEP) provides students and young professionals the opportunity to gain experience and enhance critical engineering skills.

John D. Bess; J. Blair Briggs; David W. Nigg

2009-11-01T23:59:59.000Z

345

Fast Plasma Shutdowns Obtained With Massive Hydrogenic, Noble and Mixed-Gas Injection in DIII-D  

SciTech Connect (OSTI)

Massive gas injection (MGI) experiments with H{sub 2}, D{sub 2}, He, Ne and Ar and 'mixed' (H{sub 2} + Ar and D{sub 2} + Ne) gases injected into 'ITER-similar' 1.3-MA H-mode plasmas are described. Gas species, injected quantity Q, delivery time, t{sub inj}, rate-of-rise and intrinsic and added impurities are found to affect the attributes and 'disruption mitigation' efficacies of the resulting fast plasma shutdowns. With sufficient Q and t{sub inj} < {approx}2 ms, all species provide fast (within {le} {approx}3 ms), more-or-less uniform radiative dissipation of the 0.7-MJ plasma thermal energy and fast but benign current decays with reduced vacuum vessel vertical force impulse. With pure and mixed low-Z gases, free-electron densities up to 2 x 10{sup 21} m{sup -3} are obtained. While these densities are high relative to normal tokamak densities, they are still an order of magnitude smaller than the densities required for unconditional mitigation of the runaway electron avalanche process. Key information relevant to the design of effective MGI systems for larger tokamaks and ITER has been obtained and the collective species and Q-variation data provides a rich basis for validation of emerging 2D + t MHD/transport/radiation models.

Wesley, J; Hollmann, E; Jernigan, T; Van Zeeland, M; Baylor, L; Boedo, J; Combs, S; Evans, T; Groth, M; Humphreys, D; Hyatt, A; Izzo, V; James, A; Moyer, R; Parks, P; Rudakov, D; Strait, E; Wu, W; Yu, J

2008-10-14T23:59:59.000Z

346

E-Print Network 3.0 - al phosphor obtained Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Engineering ; Materials Science 2 A nearly ideal phosphor-converted white light-emitting diode Steven C. Allen and Andrew J. Steckla Summary: by the phosphor to obtain white...

347

Obtaining and Ensuring Persistence of O&M Savings Through Resource Conservation Management  

E-Print Network [OSTI]

OBTAINING AND ENSURING PERSISTENCE OF O&M SAVINGS THROUGH RESOURCE CONSERVATION MANAGEMENT WILL MILLER ASSOCIATE DIRECTOR ? TECHNICAL SERVICES PORTLAND ENERGY CONSERVATION, INC. (PECI) PORTLAND, OREGON ABSTRACT Resource conservation management is a...

Miller, W.

2001-01-01T23:59:59.000Z

348

Critical Infrastructure Interdependency Modeling: A Survey of U.S. and International Research  

SciTech Connect (OSTI)

The Nation’s health, wealth, and security rely on the production and distribution of certain goods and services. The array of physical assets, processes, and organizations across which these goods and services move are called "critical infrastructures".1 This statement is as true in the U.S. as in any country in the world. Recent world events such as the 9-11 terrorist attacks, London bombings, and gulf coast hurricanes have highlighted the importance of stable electric, gas and oil, water, transportation, banking and finance, and control and communication infrastructure systems. Be it through direct connectivity, policies and procedures, or geospatial proximity, most critical infrastructure systems interact. These interactions often create complex relationships, dependencies, and interdependencies that cross infrastructure boundaries. The modeling and analysis of interdependencies between critical infrastructure elements is a relatively new and very important field of study. The U.S. Technical Support Working Group (TSWG) has sponsored this survey to identify and describe this current area of research including the current activities in this field being conducted both in the U.S. and internationally. The main objective of this study is to develop a single source reference of critical infrastructure interdependency modeling tools (CIIMT) that could be applied to allow users to objectively assess the capabilities of CIIMT. This information will provide guidance for directing research and development to address the gaps in development. The results will inform researchers of the TSWG Infrastructure Protection Subgroup of research and development efforts and allow a more focused approach to addressing the needs of CIIMT end-user needs. This report first presents the field of infrastructure interdependency analysis, describes the survey methodology, and presents the leading research efforts in both a cumulative table and through individual datasheets. Data was collected from open source material and when possible through direct contact with the individuals leading the research.

Not Available

2006-08-01T23:59:59.000Z

349

Determination of critical length scales for corrosion processes using microelectroanalytical techniques.  

SciTech Connect (OSTI)

A key factor in our ability to produce and predict the stability of metal-based macro- to nano-scale structures and devices is a fundamental understanding of the localized nature of corrosion. Corrosion processes where physical dimensions become critical in the degradation process include localized corrosion initiation in passivated metals, microgalvanic interactions in metal alloys, and localized corrosion in structurally complex materials like nanocrystalline metal films under atmospheric and inundated conditions. This project focuses on two areas of corrosion science where a fundamental understanding of processes occurring at critical dimensions is not currently available. Sandia will study the critical length scales necessary for passive film breakdown in the inundated aluminum (Al) system and the chemical processes and transport in ultra-thin water films relevant to the atmospheric corrosion of nanocrystalline tungsten (W) films. Techniques are required that provide spatial information without significantly perturbing or masking the underlying relationships. Al passive film breakdown is governed by the relationship between area of the film sampled and its defect structure. We will combine low current measurements with microelectrodes to study the size scale required to observe a single initiation event and record electrochemical breakdown events. The resulting quantitative measure of stability will be correlated with metal grain size, secondary phase size and distribution to understand which metal properties control stability at the macro- and nano-scale. Mechanisms of atmospheric corrosion on W are dependent on the physical dimensions and continuity of adsorbed water layers as well as the chemical reactions that take place in this layer. We will combine electrochemical and scanning probe microscopic techniques to monitor the chemistry and resulting material transport in these thin surface layers. A description of the length scales responsible for driving the corrosion of the nanocrystalline metal films will be developed. The techniques developed and information derived from this work will be used to understand and predict degradation processes in microelectronic and microsystem devices critical to Sandia's mission.

Zavadil, Kevin Robert; Wall, Frederick Douglas

2004-03-01T23:59:59.000Z

350

T-605: Oracle Critical Patch Update Advisory - April 2011 | Department...  

Broader source: Energy.gov (indexed) [DOE]

Critical Patch Update Advisory - April 19 2011. PLATFORM: Oracle Database, Oracle Fusion Middleware, Oracle Enterprise Manager Grid Control, Oracle E-Business Suite...

351

T-672: Oracle Critical Patch Update Advisory - July 2011 | Department...  

Broader source: Energy.gov (indexed) [DOE]

Critical Patch Updates and Security Alerts Security Alerts reference LINKS: Oracle Fusion Middleware Risk Matrix Oracle Database Server Risk Matrix Oracle Enterprise Manager...

352

T-537: Oracle Critical Patch Update Advisory - January 2011 ...  

Broader source: Energy.gov (indexed) [DOE]

Critical Patch Update Advisory - January 2011. PLATFORM: Oracle Database, Oracle Fusion Middleware, Oracle Enterprise Manager Grid Control, Oracle E-Business Suite...

353

Annular Core Research Reactor - Critical to Science-Based Weapons...  

National Nuclear Security Administration (NNSA)

Annular Core Research Reactor - Critical to Science-Based Weapons Design, Certification | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People...

354

Critical Performance and Durability Parameters of an Integrated...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

and Durability Parameters of an Integrated Aftertreatment System used to Meet Tier II Emission Standards Critical Performance and Durability Parameters of an Integrated...

355

Energy: Critical Infrastructure and Key Resources Sector-Specific...  

Broader source: Energy.gov (indexed) [DOE]

comprehensive risk management framework that defines critical infrastructure protection (CIP) roles and responsibilities for all levels of government, private industry, and other...

356

Proceedings of the Nuclear Criticality Technology Safety Workshop  

SciTech Connect (OSTI)

This document contains summaries of most of the papers presented at the 1995 Nuclear Criticality Technology Safety Project (NCTSP) meeting, which was held May 16 and 17 at San Diego, Ca. The meeting was broken up into seven sessions, which covered the following topics: (1) Criticality Safety of Project Sapphire; (2) Relevant Experiments For Criticality Safety; (3) Interactions with the Former Soviet Union; (4) Misapplications and Limitations of Monte Carlo Methods Directed Toward Criticality Safety Analyses; (5) Monte Carlo Vulnerabilities of Execution and Interpretation; (6) Monte Carlo Vulnerabilities of Representation; and (7) Benchmark Comparisons.

Rene G. Sanchez

1998-04-01T23:59:59.000Z

357

Review of Nevada Site Office Criticality Safety Assessments at the Criticality Experiments Facility and Training Assembly for Criticality Safety and Appraisal of the Criticality Experiments Facility Startup Plan, October 2011  

Broader source: Energy.gov [DOE]

This report provides the results of an independent oversight review of criticality safety assessment activities conducted by the Department of Energy's (DOE) Nevada Site Office

358

Residential implementation of critical-peak pricing of electricity  

E-Print Network [OSTI]

L.R. Modeling alternative residential peak-load electricitydemand response to residential critical peak pricing (CPP)analysis of California residential customer response to

Herter, Karen

2006-01-01T23:59:59.000Z

359

NNSA Completes its Critical Radar Arming and Fuzing Test for...  

National Nuclear Security Administration (NNSA)

its Critical Radar Arming and Fuzing Test for the W88 ALT 370 | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile...

360

Investigation of critical parameters in Li-ion battery electrodes...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

of critical parameters in Li-ion battery electrodes 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation...

Note: This page contains sample records for the topic "obtain information critical" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Mines Welcomes Middle School Students | Critical Materials Institute  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of Science and Technology. The students spent the day at Mines to learn about Earth, energy, the environment, critical materials and mining. The students enjoyed a chemistry show...

362

Criticality Safety Evaluation of Hanford Tank Farms Facility  

SciTech Connect (OSTI)

Data and calculations from previous criticality safety evaluations and analyses were used to evaluate criticality safety for the entire Tank Farms facility to support the continued waste storage mission. This criticality safety evaluation concludes that a criticality accident at the Tank Farms facility is an incredible event due to the existing form (chemistry) and distribution (neutron absorbers) of tank waste. Limits and controls for receipt of waste from other facilities and maintenance of tank waste condition are set forth to maintain the margin subcriticality in tank waste.

WEISS, E.V.

2000-12-15T23:59:59.000Z

363

Reducing Cyber Risk to Critical Infrastructure: NIST Framework...  

Broader source: Energy.gov (indexed) [DOE]

the President under Executive Order (EO) 13636 "Improving Critical Infrastructure Cybersecurity" of February 2013 directed the National Institute of Standards and Technology...

364

The Future of Absorption Technology in America: A Critical Look...  

Broader source: Energy.gov (indexed) [DOE]

The Future of Absorption Technology in America: A Critical Look at the Impact of Building, Cooling, Heating, and Power (BCHP) and Innovation, June 2000 The Future of Absorption...

365

Exact solution of the van der Waals model in the critical region  

E-Print Network [OSTI]

Inspired by the theory of nonlinear conservation laws, we propose a novel approach, in the framework of statistical mechanics, that naturally extends the van der Waals model to the critical region. Starting from an effective microscopic description, we derive the general functional form of its mean field partition function under the assumption named Isochoric Weights Thermodynamic ansatz. The condition that outside the critical region the model reproduces, in the thermodynamic limit, the classical van der Waals equation of state allows to fix uniquely the partition function. We show that isothermal curves develop a classical viscous shock which provides the exact analytical description of the first order gas-liquid transition of simple fluids. The solution obtained holds for finite number of particles and, in the thermodynamic limit, automatically encodes the Maxwell equal areas rule.

Adriano Barra; Antonio Moro

2014-12-05T23:59:59.000Z

366

Exact results for the criticality of quench dynamics in quantum Ising models  

E-Print Network [OSTI]

Based on the obtained exact results we systematically study the quench dynamics of a one-dimensional spin-1/2 transverse field Ising model with zero- and finite-temperature initial states. We focus on the magnetization of the system after a sudden change of the external field and a coherent time-evolution process. With a zero-temperature initial state, the quench magnetic susceptibility as a function of the initial field strength exhibits strongly similar scaling behaviors to those of the static magnetic susceptibility, and the quench magnetic susceptibility as a function of the final field strength shows a discontinuity at the quantum critical point. This discontinuity remains robust and always occurs at the quantum critical point even for the case of finite-temperature initial systems, which indicates a great advantage of employing quench dynamics to study quantum phase transitions.

Ying Li; M. X. Huo; Z. Song

2009-06-23T23:59:59.000Z

367

Security Certification & Accreditation of Federal Information Systems A Tutorial  

E-Print Network [OSTI]

assessments of Security Controls in Information Systems To obtain better understanding of Agency- related to hardware, software, firmware) Security Controls in an Information System, to determine the extent to which/29/2009 Security Certification & Assurance of Federal Information Systems Tutorial Questions during C&A Process

Madisetti, Vijay K.

368

Information Technology and Community Restoration Studies/Task 1: Information Technology  

SciTech Connect (OSTI)

Executive Summary The Interagency Biological Restoration Demonstration—a program jointly funded by the Department of Defense's Defense Threat Reduction Agency and the Department of Homeland Security's (DHS's) Science and Technology Directorate—is developing policies, methods, plans, and applied technologies to restore large urban areas, critical infrastructures, and Department of Defense installations following the intentional release of a biological agent (anthrax) by terrorists. There is a perception that there should be a common system that can share information both vertically and horizontally amongst participating organizations as well as support analyses. A key question is: "How far away from this are we?" As part of this program, Pacific Northwest National Laboratory conducted research to identify the current information technology tools that would be used by organizations in the greater Seattle urban area in such a scenario, to define criteria for use in evaluating information technology tools, and to identify current gaps. Researchers interviewed 28 individuals representing 25 agencies in civilian and military organizations to identify the tools they currently use to capture data needed to support operations and decision making. The organizations can be grouped into five broad categories: defense (Department of Defense), environmental/ecological (Environmental Protection Agency/Ecology), public health and medical services, emergency management, and critical infrastructure. The types of information that would be communicated in a biological terrorism incident include critical infrastructure and resource status, safety and protection information, laboratory test results, and general emergency information. The most commonly used tools are WebEOC (web-enabled crisis information management systems with real-time information sharing), mass notification software, resource tracking software, and NW WARN (web-based information to protect critical infrastructure systems). It appears that the current information management tools are used primarily for information gathering and sharing—not decision making. Respondents identified the following criteria for a future software system. It is easy to learn, updates information in real time, works with all agencies, is secure, uses a visualization or geographic information system feature, enables varying permission levels, flows information from one stage to another, works with other databases, feeds decision support tools, is compliant with appropriate standards, and is reasonably priced. Current tools have security issues, lack visual/mapping functions and critical infrastructure status, and do not integrate with other tools. It is clear that there is a need for an integrated, common operating system. The system would need to be accessible by all the organizations that would have a role in managing an anthrax incident to enable regional decision making. The most useful tool would feature a GIS visualization that would allow for a common operating picture that is updated in real time. To capitalize on information gained from the interviews, the following activities are recommended: • Rate emergency management decision tools against the criteria specified by the interviewees. • Identify and analyze other current activities focused on information sharing in the greater Seattle urban area. • Identify and analyze information sharing systems/tools used in other regions.

Upton, Jaki F.; Lesperance, Ann M.; Stein, Steven L.

2009-11-19T23:59:59.000Z

369

March 23, 2008 Databases: Information Systems 1 Information Systems  

E-Print Network [OSTI]

March 23, 2008 Databases: Information Systems 1 Information Systems #12;March 23, 2008 Databases: Information Systems 2 Objectives What is an Information System (IS) + Classification of Information Systems + Evolution of Information Systems + Information System Management + Performance Requirements of ISs + #12

Adam, Salah

370

Undo and Erase Events as Indicators of Usability Problems Author information removed for blind review  

E-Print Network [OSTI]

. This research evaluates the use of undo and erase events as indicators of critical incidents in Google SketchUp-reported critical incidents for low cost usability evaluation of design-oriented applications like SketchUp. Author, Google SketchUp. ACM Classification Keywords H5.2. Information interfaces and presentation (e.g., HCI

Tomkins, Andrew

371

Development of a structural health monitoring system for the life assessment of critical transportation infrastructure.  

SciTech Connect (OSTI)

Recent structural failures such as the I-35W Mississippi River Bridge in Minnesota have underscored the urgent need for improved methods and procedures for evaluating our aging transportation infrastructure. This research seeks to develop a basis for a Structural Health Monitoring (SHM) system to provide quantitative information related to the structural integrity of metallic structures to make appropriate management decisions and ensuring public safety. This research employs advanced structural analysis and nondestructive testing (NDT) methods for an accurate fatigue analysis. Metal railroad bridges in New Mexico will be the focus since many of these structures are over 100 years old and classified as fracture-critical. The term fracture-critical indicates that failure of a single component may result in complete collapse of the structure such as the one experienced by the I-35W Bridge. Failure may originate from sources such as loss of section due to corrosion or cracking caused by fatigue loading. Because standard inspection practice is primarily visual, these types of defects can go undetected due to oversight, lack of access to critical areas, or, in riveted members, hidden defects that are beneath fasteners or connection angles. Another issue is that it is difficult to determine the fatigue damage that a structure has experienced and the rate at which damage is accumulating due to uncertain history and load distribution in supporting members. A SHM system has several advantages that can overcome these limitations. SHM allows critical areas of the structure to be monitored more quantitatively under actual loading. The research needed to apply SHM to metallic structures was performed and a case study was carried out to show the potential of SHM-driven fatigue evaluation to assess the condition of critical transportation infrastructure and to guide inspectors to potential problem areas. This project combines the expertise in transportation infrastructure at New Mexico State University with the expertise at Sandia National Laboratories in the emerging field of SHM.

Roach, Dennis Patrick; Jauregui, David Villegas (New Mexico State University, Las Cruces, NM); Daumueller, Andrew Nicholas (New Mexico State University, Las Cruces, NM)

2012-02-01T23:59:59.000Z

372

Implications of an open, extensible, and distributed hypermedia information system architecture for interprocess communication subsystem design  

E-Print Network [OSTI]

in an information system as openness and extensibility. Secondly, it was shown that the design and implementation of an interprocess communication subsystem has critical implications for the supersystem into which it is integrated. Namely, if the interprocess...

Nuernberg, Peter John

1994-01-01T23:59:59.000Z

373

Criticality experiments with low enriched UO/sub 2/ fuel rods in water containing dissolved gadolinium  

SciTech Connect (OSTI)

The results obtained in a criticality experiments program performed for British Nuclear Fuels, Ltd. (BNFL) under contract with the United States Department of Energy (USDOE) are presented in this report along with a complete description of the experiments. The experiments involved low enriched UO/sub 2/ and PuO/sub 2/-UO/sub 2/ fuel rods in water containing dissolved gadolinium, and are in direct support of BNFL plans to use soluble compounds of the neutron poison gadolinium as a primary criticality safeguard in the reprocessing of low enriched nuclear fuels. The experiments were designed primarily to provide data for validating a calculation method being developed for BNFL design and safety assessments, and to obtain data for the use of gadolinium as a neutron poison in nuclear chemical plant operations - particularly fuel dissolution. The experiments program covers a wide range of neutron moderation (near optimum to very under-moderated) and a wide range of gadolinium concentration (zero to about 2.5 g Gd/l). The measurements provide critical and subcritical k/sub eff/ data (1 greater than or equal to k/sub eff/ greater than or equal to 0.87) on fuel-water assemblies of UO/sub 2/ rods at two enrichments (2.35 wt % and 4.31 wt % /sup 235/U) and on mixed fuel-water assemblies of UO/sub 2/ and PuO/sub 2/-UO/sub 2/ rods containing 4.31 wt % /sup 235/U and 2 wt % PuO/sub 2/ in natural UO/sub 2/ respectively. Critical size of the lattices was determined with water containing no gadolinium and with water containing dissolved gadolinium nitrate. Pulsed neutron source measurements were performed to determine subcritical k/sub eff/ values as additional amounts of gadolinium were successively dissolved in the water of each critical assembly. Fission rate measurements in /sup 235/U using solid state track recorders were made in each of the three unpoisoned critical assemblies, and in the near-optimum moderated and the close-packed poisoned assemblies of this fuel.

Bierman, S.R.; Murphy, E.S.; Clayton, E.D.; Keay, R.T.

1984-02-01T23:59:59.000Z

374

Diamagnetic critical singularity in unconventional ferromagnetic superconductors  

E-Print Network [OSTI]

The scaling properties of the free energy, the diamagnetic moment, and the diamagnetic susceptibility above the phase transition from the ferromagnetic phase to the phase of coexistence of ferromagnetic order and superconductivity in unconventional ferromagnetic superconductors with spin-triplet (p-wave) electron paring are considered. The crossover from weak to strong magnetic induction is described for both quasi-2D (thin films) and 3D (bulk) superconductors. The singularities of diamagnetic moment and diamagnetic susceptibility are dumped for large variations of the pressure and, hence, such singularities could hardly be observed in experiments. The results are obtained within Gaussian approximation on the basis of general theory of ferromagnetic superconductors with p-wave electron pairing.

Humberto Belich; Dimo I. Uzunov

2012-01-18T23:59:59.000Z

375

What is a Beryllium Measurement? A Critical Look at Beryllium  

SciTech Connect (OSTI)

DOE workplaces strive to comply with the 10 CFR 850.31(b)(1) surface concentration release criterion. The usual planning considerations for demonstrating compliance are these: how many swipes, and where; which sample preparation and analytical methods; what reporting limits; and what sample statistic to compare with the criterion. We have reviewed swipe samples from hundreds of Nevada Test Site workplaces: office buildings; experimental facilities; forward area field units; shops; and tunnels. Our experiences have led us to a critical examination of the inner workings of the measurement process itself, involving details generally taken for granted when those usual questions are asked. In this presentation we dissect the ICP-AES Be measurement process. We discuss calibration options and how they impact the distributions of analytical results. We look at distributions of blank results obtained from different labs, and discuss their relevance to determining reporting limits. We examine the way measurements are made from spectra, how that process impacts our understanding of the actual statistical distributions of Be measurements, and how interferences can affect Be measurements. Our objective is to gain sufficient confidence in the measurement process so that the usual questions will make sense and the survey results will be credible. Based on our observations, we offer these recommendations: prepare calibration samples in digested blank swipes; force the calibration line through (0,0); base reporting limits on field blank measurement distributions rather than 40 CFR 236 calculations; use, but do not believe, the usual lognormal distribution assumption; and avoid the 234.861 nm emission line.

Charles Davis; Dan Field; John Hess; Dan Jensen

2006-03-01T23:59:59.000Z

376

Criticality Safety Evaluation for TRU Waste In Storage at the RWMC  

SciTech Connect (OSTI)

Stored containers (drums, boxes, and bins) of transuranic waste at the Radioactive Waste Management Complex (RWMC) facility located at the Idaho National Engineering Laboratory (INEL) were evaluated based on inherent neutron absorption characteristics of the waste materials. It was demonstrated that these properties are sufficient to preclude a criticality accident at the actual fissile levels present in the waste stored at the RWMC. Based on the database information available, the results reported herein confirm that the waste drums, boxes, and bins currently stored at the RWMC will remain safely subcritical if rearranged, restacked, or otherwise handled. Acceptance criteria for receiving future drum shipments were established based on fully infinite systems.

M. E. Shaw; J. B. Briggs; C. A. Atkinson; G. J. Briscoe

1994-04-01T23:59:59.000Z

377

Critical Configuration and Physics Measurements for Assemblies of U(93.15)O2 Fuel Rods  

SciTech Connect (OSTI)

A series of critical experiments were completed in 1962-1965 at Oak Ridge National Laboratory’s (ORNL’s) Critical Experiments Facility (CEF) in support of the Medium-Power Reactor Experiments (MPRE) program. In the late 1950s, efforts were made to study “power plants for the production of electrical power in space vehicles.”(a) The MPRE program was a part of those efforts and studied the feasibility of a stainless-steel system, boiling potassium 1 MW(t), or about 140 kW(e), reactor. The program was carried out in [fiscal years] 1964, 1965, and 1966. A summary of the program’s effort was compiled in 1967. The delayed critical experiments were a mockup of a small, potassium-cooled space power reactor for validation of reactor calculations and reactor physics methods. Initial experiments, performed in November and December of 1962, consisted of a core of unmoderated stainless-steel tubes, each containing 26 UO2 fuel pellets, surrounded by a graphite reflector. Measurements were made to determine critical reflector arrangements, fission-rate distributions, and cadmium ratio distributions. Subsequent experiments used beryllium reflectors and also measured the reactivity for various materials placed in the core. “The [assemblies were built] on [a] vertical assembly machine so that the movable part was the core and bottom reflector.”(Reference 1) The experiment studied in this evaluation was the first of the series and had the fuel tubes packed tightly into a 22.87 cm outside diameter (OD) core tank. Two critical configurations were found by varying the amount of graphite reflector (References 1 and 2). Once the critical configurations had been achieved, various measurements of reactivity, relative axial and radial activation rates of 235U, , and cadmium ratios were performed. The cadmium ratio, reactivity, and activation rate measurements performed on the critical configurations are described in Sections 1.3, 1.4 and 1.7, respectively. Information for this evaluation was compiled from References 1 and 2, reports on subsequent experiments in the series , and the experimental logbook, and from communication with the experimenter, John T. Mihalczo.

Margaret A. Marshall

2013-03-01T23:59:59.000Z

378

Critical Configuration and Physics Measurements for Assemblies of U(93.15)O2 Fuel Rods  

SciTech Connect (OSTI)

A series of critical experiments were completed in 1962-1965 at Oak Ridge National Laboratory’s (ORNL’s) Critical Experiments Facility (CEF) in support of the Medium-Power Reactor Experiments (MPRE) program. In the late 1950s, efforts were made to study “power plants for the production of electrical power in space vehicles.”(a) The MPRE program was a part of those efforts and studied the feasibility of a stainless-steel system, boiling potassium 1 MW(t), or about 140 kW(e), reactor. The program was carried out in [fiscal years] 1964, 1965, and 1966. A summary of the program’s effort was compiled in 1967. The delayed critical experiments were a mockup of a small, potassium-cooled space power reactor for validation of reactor calculations and reactor physics methods. Initial experiments, performed in November and December of 1962, consisted of a core of unmoderated stainless-steel tubes, each containing 26 UO2 fuel pellets, surrounded by a graphite reflector. Measurements were made to determine critical reflector arrangements, fission-rate distributions, and cadmium ratio distributions. Subsequent experiments used beryllium reflectors and also measured the reactivity for various materials placed in the core. “The [assemblies were built] on [a] vertical assembly machine so that the movable part was the core and bottom reflector.”(Reference 1) The experiment studied in this evaluation was the first of the series and had the fuel tubes packed tightly into a 22.87 cm outside diameter (OD) core tank. Two critical configurations were found by varying the amount of graphite reflector (References 1 and 2). Once the critical configurations had been achieved, various measurements of reactivity, relative axial and radial activation rates of 235U, , and cadmium ratios were performed. The cadmium ratio, reactivity, and activation rate measurements performed on the critical configurations are described in Sections 1.3, 1.4 and 1.7, respectively. Information for this evaluation was compiled from References 1 and 2, reports on subsequent experiments in the series , and the experimental logbook, and from communication with the experimenter, John T. Mihalczo.

Margaret A. Marshall

2012-09-01T23:59:59.000Z

379

Fetch Halting on Critical Load Misses Nikil Mehta,  

E-Print Network [OSTI]

Fetch Halting on Critical Load Misses Nikil Mehta, Brian Singer, R. Iris Bahar Division, such as loads that miss to main memory and floating point arithmetic operations, are primarily responsible to characterize critical instructions, our approach com- bines software profiling and hardware monitoring

DeHon, André

380

Critical phenomena of asymmetric nuclear matter in the extended  

E-Print Network [OSTI]

Critical phenomena of asymmetric nuclear matter in the extended Zimanyi-Moszkowski model K nuclear matter produced by heavy-ion reactions is isospin asymmetric. Although the critical exponents. Miyazaki Abstract We have studied the liquid-gas phase transition of warm asymmetric nuclear matter

Note: This page contains sample records for the topic "obtain information critical" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

COG - Special Features of Interest to Criticality Safety Practitioners  

SciTech Connect (OSTI)

COG is a modern, general-purpose, high fidelity, multi-particle transport code developed at the Lawrence Livermore National Laboratory specifically for use in deep penetration (shielding) and criticality safety calculations. This paper describes some features in COG of special interest to criticality safety practitioners.

Buck, R M; Heinrichs, D P; Krass, A W; Lent, E M

2010-01-14T23:59:59.000Z

382

Homogenization of the criticality spectral equation in neutron transport  

E-Print Network [OSTI]

for the neutron transport equation in a periodic heterogeneous domain, modeling the criticality study of nuclearHomogenization of the criticality spectral equation in neutron transport Gr'egoire Allaire \\Lambda problem. This result justifies and improves the engineering procedure used in practice for nuclear reactor

Bal, Guillaume

383

The brain: What is critical about it? Dante R. Chialvo  

E-Print Network [OSTI]

The brain: What is critical about it? Dante R. Chialvo , Pablo Balenzuela and Daniel Fraiman the recent proposal that the most fascinating brain properties are related to the fact that it always stays results, as well as further implications of this view of the functioning brain. Keywords: Brain, critical

Chialvo, Dante R.

384

Attack Containment Framework for Large-Scale Critical Infrastructures  

E-Print Network [OSTI]

Attack Containment Framework for Large-Scale Critical Infrastructures Hoang Nguyen Department-- We present an attack containment framework against value-changing attacks in large-scale critical structure, called attack container, which captures the trust behavior of a group of nodes and assists

Nahrstedt, Klara

385

Cryptanalysing the Critical Group: Efficiently Solving Biggs's Discrete Logarithm Problem  

E-Print Network [OSTI]

Cryptanalysing the Critical Group: Efficiently Solving Biggs's Discrete Logarithm Problem Simon R Kingdom s.blackburn@rhul.ac.uk November 7, 2008 Abstract Biggs has recently proposed the critical group that the discrete log problem can be efficiently solved in Biggs's groups. Thus this class of groups is not suitable

386

Statistical Model Criticism using Kernel Two Sample Tests  

E-Print Network [OSTI]

Statistical Model Criticism using Kernel Two Sample Tests James Robert Lloyd Department Abstract We propose an exploratory approach to statistical model criticism using maximum mean discrepancy a statistic by which to measure discrepancies between data and a statistical model. MMD two sample tests

Ghahramani, Zoubin

387

1998 technology roadmap for integrated circuits used in critical applications  

SciTech Connect (OSTI)

Integrated Circuits (ICs) are being extensively used in commercial and government applications that have extreme consequences of failure. The rapid evolution of the commercial microelectronics industry presents serious technical and supplier challenges to this niche critical IC marketplace. This Roadmap was developed in conjunction with the Using ICs in Critical Applications Workshop which was held in Albuquerque, NM, November 11--12, 1997.

Dellin, T.A.

1998-09-01T23:59:59.000Z

388

SPECTRA OF CRITICAL EXPONENTS IN NONLINEAR HEAT EQUATIONS WITH ABSORPTION  

E-Print Network [OSTI]

SPECTRA OF CRITICAL EXPONENTS IN NONLINEAR HEAT EQUATIONS WITH ABSORPTION V.A. GALAKTIONOV AND P of the classical porous medium equation with absorption u t = #1;u m u p in R N #2; R+ change their large-time behaviour at the critical absorption exponent p 0 = m+2=N . We show that, actually, there exists an in#12

Bath, University of

389

Ideas for Security Assurance in Security Critical Software using Modelica  

E-Print Network [OSTI]

Ideas for Security Assurance in Security Critical Software using Modelica David Broman, Peter critical software. Modelica is a modern, strongly typed, de- clarative, and object-oriented language assurance, by expanding the scope of Modelica into also becoming a declarative modeling language for other

Zhao, Yuxiao

390

CRITICAL FEATURES IN HUMAN MOTION SIMULATION FOR ERGONOMIC ANALYSIS  

E-Print Network [OSTI]

CRITICAL FEATURES IN HUMAN MOTION SIMULATION FOR ERGONOMIC ANALYSIS Matthew P. Reed, Don B. Chaffin of choice for assessments of the physical ergonomics of products and workplaces. Software representations important for ergonomic analysis. This paper identifies and justifies a set of these critical features

Faraway, Julian

391

Neutronics for critical fission reactors and subcritical fission in hybrids  

SciTech Connect (OSTI)

The requirements of future innovative nuclear fuel cycles will focus on safety, sustainability and radioactive waste minimization. Critical fast neutron reactors and sub-critical, external source driven systems (accelerator driven and fusion-fission hybrids) have a potential role to meet these requirements in view of their physics characteristics. This paper provides a short introduction to these features.

Salvatores, Massimo [CEA-Cadarache, DEN-Dir, Bat. 101, St-Paul-Lez-Durance 13108 (France)

2012-06-19T23:59:59.000Z

392

WIPP-025, Rev. 0 Summary of Nuclear Criticality Safety  

E-Print Network [OSTI]

at the Waste Isolation Pilot Plant #12;SUMMARY OF NUCLEAR CRITICALITY SAFETY EVALUATION FOR SHIELDED CONTAINERS PLANT WIPP-025, REV. 0 AUGUST 2009 Summary of Nuclear Criticality Safety Evaluation for Shielded ISOLATION PILOT PLANT WIPP-025, REV. 0 AUGUST 2009 ES-1 Executive Summary This report summarizes the nuclear

393

Shale Gas and the Environment: Critical Need for a  

E-Print Network [OSTI]

Shale Gas and the Environment: Critical Need for a Government­University­Industry Research Initiative P o l i c y m a k e r G u i d e #12;Shale gas production is increasing at a rapid rate initiative is needed to fill critical gaps in knowledge at the interface of shale gas development

McGaughey, Alan

394

Shale Gas and the Environment: Critical Need for a  

E-Print Network [OSTI]

Shale Gas and the Environment: Critical Need for a Government­University­Industry Research Initiative P O L I C Y M A K E R G U I D E #12;Shale gas production is increasing at a rapid rate initiative is needed to fill critical gaps in knowledge at the interface of shale gas development

McGaughey, Alan

395

Proceedings of the Nuclear Criticality Technology and Safety Project Workshop  

SciTech Connect (OSTI)

This report is the proceedings of the annual Nuclear Criticality Technology and Safety Project (NCTSP) Workshop held in Monterey, California, on April 16--28, 1993. The NCTSP was sponsored by the Department of Energy and organized by the Los Alamos Critical Experiments Facility. The report is divided into six sections reflecting the sessions outlined on the workshop agenda.

Sanchez, R.G. [comp.

1994-01-01T23:59:59.000Z

396

Inspection Procedures for Critical Programs that Model Physical Phenomena  

E-Print Network [OSTI]

is software critical? The software that controls a nuclear plant, chemical plant, automobile, or airplane-of-life and/or environmental damage. Software that controls systems in "real-time" has long been a concern used in many critical analyses, such as · to predict the effect of explosions, · to estimate

Qiao, Sanzheng

397

Survey of Critical Wetlands and Riparian Areas in Mesa County  

E-Print Network [OSTI]

Survey of Critical Wetlands and Riparian Areas in Mesa County Colorado Natural Heritage Program, Colorado 80523 #12;Survey of Critical Wetlands and Riparian Areas in Mesa County Prepared for: Colorado Department of Natural Resources Division of Wildlife, Wetlands Program 6060 Broadway Denver, Colorado 80203

398

Survey of Critical Wetlands Bureau of Land Management Lands  

E-Print Network [OSTI]

Survey of Critical Wetlands Bureau of Land Management Lands South Park, Park County, Colorado 2003 Delivery Colorado State University #12;Survey of Critical Wetlands Bureau of Land Management Lands South place from unique wetlands to high quality grasslands to the bristlecone pine forests to its alpine

399

Title 43 CFR 3204.5 How Can I Obtain a Noncompetitive Lease? | Open Energy  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov Pty LtdSteen,Ltd Jump JumpAl.,InformationInformation 2 What Fees Must

400

Quantitative comparison of fuel spray images obtained using ultrafast coherent and incoherent double-pulsed illumination  

E-Print Network [OSTI]

We present a quantitative comparison between the high-pressure fuel spray images obtained experimentally using classical imaging with coherent and incoherent ultrafast illuminations recorded using a compatible CMOS camera. The ultrafast, incoherent illumination source was extracted from the supercontinuum generated by tightly focusing the femtosecond laser pulses in water. The average velocity maps computed using time-correlated image-pairs and spray edge complexity computed using the average curvature scale space maps are compared for the spray images obtained with the two illumination techniques and also for the numerically simulated spray using the coupled volume of fluid and level set method for interface tracking (direct numerical simulation or DNS). The spray images obtained with supercontinuum-derived, incoherent, ultrafast illumination are clearer, since the artifacts arising due to laser speckles and multiple diffraction effects are largely reduced and show a better correlation with the DNS results.

Purwar, Harsh; Idlahcen, Saïd; Rozé, Claude; Blaisot, Jean-Bernard; Ménard, Thibault

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "obtain information critical" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

The effective delayed neutron fraction for bare-metal criticals  

SciTech Connect (OSTI)

Given sufficient material, a large number of actinides could be used to form bare-metal criticals. The effective delayed neutron fraction for a bare critical comprised of a fissile material is comparable with the absolute delayed neutron fraction. The effective delayed neutron fraction for a bare critical composed of a fissionable material is reduced by factors of 2 to 10 when compared with the absolute delayed neutron fraction. When the effective delayed neutron fraction is small, the difference between delayed and prompt criticality is small, and extreme caution must be used in critical assemblies of these materials. This study uses an approximate but realistic model to survey the actinide region to compare effective delayed neutron fractions with absolute delayed neutron fractions.

Pearlstein, S.

1999-12-01T23:59:59.000Z

402

Self limiting features of accidental criticality in a solution system  

SciTech Connect (OSTI)

Experience with the SHEBA solution critical assembly during validation testing of accidental criticality alarm detectors provided several insights into the character of potential accidental excursions. Two observations were of particular interest. First, it is nearly impossible to maintain a solution system, particularly one employing low-enrichment material, in a constant state. If super-critical, the system will heat up, expand (or form bubbles), return to a sub-critical state, and shut down of its own accord without going into short period oscillations. Second, a very slow change in the system could produce a long ''pulse'' resulting in lengthy exposures, a high dose, but a low dose rate. The experiments dramatically contradicted the popular contention that accidental criticality is characterized by a blue flash, a clap of thunder, and violet expulsion of material. 5 refs., 3 figs., 4 tabs.

Malenfant, R.E.

1988-01-01T23:59:59.000Z

403

Process For Cutting Polymers Electrolyte Multi-Layer Batteries And Batteries Obtained Thereby  

DOE Patents [OSTI]

A stacking of battery laminate is prepared, each battery consisting of anode, polymer electrolyte, cathode films and possibly an insulating film, under conditions suitable to constitute a rigid monoblock assembly, in which the films are unitary with one another. The assembly obtained is thereafter cut in predetermined shape by using a mechanical device without macroscopic deformation of the films constituting the assembly and without inducing permanent short circuits. The battery which is obtained after cutting includes at least one end which appears as a uniform cut, the various films constituting the assembly having undergone no macroscopic deformation, the edges of the films of the anode including an electronically insulating passivation film.

Gauthier, Michel (La Prairie, CA); Lessard, Ginette (Longueuil, CA); Dussault, Gaston (St-Benoit-de-Mirabel, CA); Rouillard, Roger (Beloeil, CA); Simoneau, Martin (Montreal, CA); Miller, Alan Paul (Woodbury, MN)

2003-09-09T23:59:59.000Z

404

10 Things You Didn't Know About Critical Materials | Critical Materials  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation InInformation InExplosion Monitoring:Home|PhysicsGas SeparationsRelevant0 0 0 1 0 0 0 1

405

Water/sand flooded and immersed critical experiment and analysis performed in support of the TOPAZ-II safety program  

SciTech Connect (OSTI)

Presented is a brief description of the Narciss-M2 critical assemblies, which simulate accidental water/wet-sand immersion of the TOPAZ-II reactor as well as water-flooding of core cavities. Experimental results obtained from these critical assemblies, including experiments with several fuel elements removed from the core, are shown. These configurations with several extracted fuel elements simulate a proposed fuel-out anticriticality-device modification to the TOPAZ-II reactor. Preliminary computational analysis of these experiments using the Monte Carlo neutron-transport method is outlined. Nuclear criticality safety of the TOPAZ-II reactor with an incorporated anticriticality unit is demonstrated. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}

Glushkov, E.S.; Ponomarev-Stepnoi, N.N.; Bubelev, V.G.; Garin, V.P.; Gomin, E.A.; Kompanietz, G.V.; Krutov, A.M.; Lobynstev, V.A.; Maiorov, L.V.; Polyakov, D.N.; Chunyaev, E.I. [RRC Kurchatov Institute, Moscow 123182 (Russian Federation); Marshall, A.C. [International Nuclear Safety, Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States); Sapir, J.L.; Pelowitz, D.B. [Reactor Design and Analysis Group, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

1995-01-20T23:59:59.000Z

406

FEDERAL INFORMATION PROCESSING STANDARD  

E-Print Network [OSTI]

March 2004 FEDERAL INFORMATION PROCESSING STANDARD (FIPS) 199, STANDARDS FOR SECURITY Information Technology Laboratory National Institute of Standards and Technology A new Federal Information Processing Standard (FIPS), recently approved by the Secretary of Commerce, will help federal agencies

407

Evaluation of extraction and purification methods for obtaining PCR-amplifiable DNA from compost  

E-Print Network [OSTI]

Evaluation of extraction and purification methods for obtaining PCR-amplifiable DNA from compost complicate the isolation of PCR- amplifiable DNA from compost and other organic-rich samples. In this study from compost decreased with increasing salt concentration in the lysis buffer. DNA purified by gel

Michel Jr., Frederick C.

408

Vol. 36 (2005) ACTA PHYSICA POLONICA B No 4 NUCLEAR SHELL ENERGY OBTAINED  

E-Print Network [OSTI]

, not over the single- particle energies. The new prescription for ~E is the following: · one definesVol. 36 (2005) ACTA PHYSICA POLONICA B No 4 NUCLEAR SHELL ENERGY OBTAINED BY AVERAGING IN PARTICLE (Received December 13, 2004) A revised version of the shell-correction method, based on a new way

Pomorski, Krzysztof

409

ENERGY SPECTRUM OF PRIMARY COSMIC RAYS ABOVE 1017 OBTAINED USING AKENO 20 KM2  

E-Print Network [OSTI]

OG 6.3-3 ENERGY SPECTRUM OF PRIMARY COSMIC RAYS ABOVE 1017 EV OBTAINED USING AKENO 20 KM2 ARRAY M, Tokyo Institute of Technology, Tokyo 152, Japan . Institute of High Energy Physics, Academia Sinica these showers, 60 of them are initiated by primaries with energies larger than 1019 eV. The energy spectrum

410

Using Euler-Lagrange Variational Principle to Obtain Flow Relations for Generalized Newtonian Fluids  

E-Print Network [OSTI]

Euler-Lagrange variational principle is used to obtain analytical and numerical flow relations in cylindrical tubes. The method is based on minimizing the total stress in the flow duct using the fluid constitutive relation between stress and rate of strain. Newtonian and non-Newtonian fluid models; which include power law, Bingham, Herschel-Bulkley, Carreau and Cross; are used for demonstration.

Taha Sochi

2013-01-13T23:59:59.000Z

411

Impact of sludge mechanical behaviour on spatial distribution parameters obtained with centrifugal spreader  

E-Print Network [OSTI]

1 Impact of sludge mechanical behaviour on spatial distribution parameters obtained to analyse organic spreading and opens the way to more developments. Keywords: sludge rheological behaviour a large amount of residues which are spread on agricultural fields. This process of sludge reuse is mainly

Paris-Sud XI, Université de

412

Internship Guidelines All students seeking to obtain internship credit through the Center for International Studies should  

E-Print Network [OSTI]

Internship Guidelines All students seeking to obtain internship credit through the Center in pursuing an International Studies internship should begin making plans and searching for an internship well securing an internship at least six months in advance. For example, should you plan to complete

Hutcheon, James M.

413

Cooling energy demand evaluation by means of regression models obtained from dynamic simulations  

E-Print Network [OSTI]

Cooling energy demand evaluation by means of regression models obtained from dynamic simulations Ph, Université Lyon1, FRANCE ABSTRACT The forecast of the energy heating/cooling demand would be a good indicator between simple and complex methods of evaluating the cooling energy demand we have proposed to use energy

Paris-Sud XI, Université de

414

1 THE CRITICAL ZONE The critical zone is "the heterogeneous, near surface  

E-Print Network [OSTI]

of environmental conditions. This information then needs to be integrated into field scale hydro- logic of synchrotron-based tech- niques, including micro-focused x-ray absorption fine structure (XAFS) and x-ray fluorescence (XRF) spec- troscopies and micro-tomography to speciate and determine associations of metal

Sparks, Donald L.

415

Energy information sheets  

SciTech Connect (OSTI)

The National Energy Information Center (NEIC), as part of its mission, provides energy information and referral assistance to Federal, State, and local governments, the academic community, business and industrial organizations, and the public. The Energy Information Sheets was developed to provide general information on various aspects of fuel production, prices, consumption, and capability. Additional information on related subject matter can be found in other Energy Information Administration (EIA) publications as referenced at the end of each sheet.

NONE

1995-07-01T23:59:59.000Z

416

The cation inversion and magnetization in nanopowder zinc ferrite obtained by soft mechanochemical processing  

SciTech Connect (OSTI)

Graphical abstract: - Highlights: • Nano powder of ZnFe{sub 2}O{sub 4} prepared by a soft mechanochemical route after 18 h milling. • Phase formation controlled by XRD, Raman spectroscopy and magnetic measurements. • Size, strain and cation inversion degree determined by Rietveld refinement. • We were able to estimate the degree of inversion at most 0.348 and 0.4. • Obtained extremely high values of saturation magnetizations at T = 4.5 K. - Abstract: Two zinc ferrite nanoparticle materials were prepared by the same method – soft mechanochemical synthesis, but starting from different powder mixtures: (1) Zn(OH){sub 2}/?-Fe{sub 2}O{sub 3} and (2) Zn(OH){sub 2}/Fe(OH){sub 3}. In both cases a single phase system was obtained after 18 h of milling. The progress of the synthesis was controlled by X-ray diffractometry (XRD), Raman spectroscopy, TEM and magnetic measurements. Analysis of the XRD patterns by Rietveld refinement allowed determination of the cation inversion degree for both obtained single phase ZnFe{sub 2}O{sub 4} samples. The sample obtained from mixture (1) has the cation inversion degree 0.3482 and the sample obtained from mixture (2) 0.400. Magnetization measurements were confirmed that the degrees of the inversion were well estimated. Comparison with published data shows that used method of synthesis gives nano powder samples with extremely high values of saturation magnetizations: sample (1) 78.3 emu g{sup ?1} and sample (2) 91.5 emu g{sup ?1} at T = 4.5 K.

Milutinovi?, A. [Institute of Physics, University of Belgrade, Pregrevica 118, Zemun, Belgrade (Serbia); Lazarevi?, Z., E-mail: lzorica@yahoo.com [Institute of Physics, University of Belgrade, Pregrevica 118, Zemun, Belgrade (Serbia); Jovaleki?, ?. [Institute for Multidisciplinary Research, University of Belgrade, Belgrade (Serbia); Kuryliszyn-Kudelska, I. [Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw (Poland); Rom?evi?, M.; Kosti?, S.; Rom?evi?, N. [Institute of Physics, University of Belgrade, Pregrevica 118, Zemun, Belgrade (Serbia)

2013-11-15T23:59:59.000Z

417

Review of critical factors affecting crude corrosivity  

SciTech Connect (OSTI)

Lower quality opportunity crudes are now processed in most refineries and the source of the crudes may vary daily. These feedstocks, if not properly handled, can result in reduction in service life of equipment as well as costly failure and downtime. Analytical tools are needed to predict their high temperature corrosivity toward distillation units. Threshold in total sulfur and total acid number (TAN) have been used for many years as rules of thumb for predicting crude corrosivity, However, it is now realized that they are not accurate in their predictive ability. Crudes with similar composition and comparable with respect to process considerations have been found to be entirely different in their impact on corrosion. Naphthenic acid content, sulfur content, velocity, temperature, and materials of construction are the main factors affecting the corrosion process, Despite progress made in elucidating the role of the different parameters on the crude corrosivity process, the main problem is in calculating their combined effect, especially when the corroding stream is such a complex mixture. The TAN is usually related directly to naphthenic acid content. However, discrepancies between analytical methods and interference of numerous components of the crude itself lead to unreliable reported content of naphthenic acid. The sulfur compounds, with respect to corrosivity, appear to relate more to their decomposition at elevated temperature to form hydrogen sulfide than to their total content in crude. This paper reviews the present situation regarding crude corrosivity in distillation units, with the aim of indicating the extent of available information, and areas where further research is necessary.

Tebbal, S.; Kane, R.D. [CLI International, Inc., Houston, TX (United States)

1996-08-01T23:59:59.000Z

418

Technical Data to Justify Full Burnup Credit in Criticality Safety Licensing Analysis  

SciTech Connect (OSTI)

Enercon Services, Inc. (ENERCON) was requested under Task Order No.2 to identify scientific and technical data needed to benchmark and justify Full Burnup Credit, which adds 16 fission products and 4 minor actinides1 to Actinide-Only burnup credit. The historical perspective for Full Burnup Credit is discussed, and interviews of organizations participating in burnup credit activities are summarized as a basis for identifying additional data needs and making recommendation. Input from burnup credit participants representing two segments of the commercial nuclear industry is provided. First, the Electric Power Research Institute (EPRI) has been very active in the development of Full Burnup Credit, representing the interests of nuclear utilities in achieving capacity gains for storage and transport casks. EPRI and its utility customers are interested in a swift resolution of the validation issues that are delaying the implementation of Full Burnup Credit [EPRI 2010b]. Second, used nuclear fuel storage and transportation Cask Vendors favor improving burnup credit beyond Actinide-Only burnup credit, although their discussion of specific burnup credit achievements and data needs was limited citing business sensitive and technical proprietary concerns. While Cask Vendor proprietary items are not specifically identified in this report, the needs of all nuclear industry participants are reflected in the conclusions and recommendations of this report. In addition, Oak Ridge National Laboratory (ORNL) and Sandia National Laboratory (SNL) were interviewed for their input into additional data needs to achieve Full Burnup Credit. ORNL was very open to discussions of Full Burnup Credit, with several telecoms and a visit by ENERCON to ORNL. For many years, ORNL has provided extensive support to the NRC regarding burnup credit in all of its forms. Discussions with ORNL focused on potential resolutions to the validation issues for the use of fission products. SNL was helpful in ENERCON's understanding of the difficult issues related to obtaining and analyzing additional cross section test data to support Full Burnup Credit. A PIRT (Phenomena Identification and Ranking Table) analysis was performed by ENERCON to evaluate the costs and benefits of acquiring different types of nuclear data in support of Full Burnup Credit. A PIRT exercise is a formal expert elicitation process with the final output being the ranking tables. The PIRT analysis (Table 7-4: Results of PIRT Evaluation) showed that the acquisition of additional Actinide-Only experimental data, although beneficial, was associated with high cost and is not necessarily needed. The conclusion was that the existing Radiochemical Assay (RCA) data plus the French Haut Taux de Combustion (HTC)2 and handbook Laboratory Critical Experiment (LCE) data provide adequate benchmark validation for Actinide-Only Burnup Credit. The PIRT analysis indicated that the costs and schedule to obtain sufficient additional experimental data to support the addition of 16 fission products to Actinide-Only Burnup Credit to produce Full Burnup Credit are quite substantial. ENERCON estimates the cost to be $50M to $100M with a schedule of five or more years. The PIRT analysis highlights another option for fission product burnup credit, which is the application of computer-based uncertainty analyses (S/U - Sensitivity/Uncertainty methodologies), confirmed by the limited experimental data that is already available. S/U analyses essentially transform cross section uncertainty information contained in the cross section libraries into a reactivity bias and uncertainty. Recent work by ORNL and EPRI has shown that a methodology to support Full Burnup Credit is possible using a combination of traditional RCA and LCE validation plus S/U validation for fission product isotopics and cross sections. Further, the most recent cross section data (ENDF/B-VII) can be incorporated into the burnup credit codes at a reasonable cost compared to the acquisition of equivalent experimental data. ENERCON concludes that even with the cos

Enercon Services, Inc.

2011-03-14T23:59:59.000Z

419

Biofuels Information Center  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Biofuels Information Center BETO 2015 Peer Review Kristi Moriarty March 24, 2015 2 Goal Statement * The purpose of the Biofuels Information Center (BIC) task is to increase...

420

Confidential Business Information  

Broader source: Energy.gov (indexed) [DOE]

will make its own determination about the confidential status of the information and treat it according to its determination. Confidential information should be submitted to the...

Note: This page contains sample records for the topic "obtain information critical" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Experimental study on the thorium-loaded accelerator-driven system at the Kyoto Univ. critical assembly  

SciTech Connect (OSTI)

The experimental study on the thorium-loaded accelerator-driven system (ADS) is conducted in the Kyoto Univ. Critical Assembly (KUCA). The experiments are carried out in both the critical and subcritical states for attaining the reaction rates of the thorium capture and fission reactions. In the critical system, the thorium plate irradiation experiment is carried out for the thorium capture and fission reactions. From the results of the measurements, the thorium fission reactions are obtained apparently in the critical system, and the C/E values of reaction rates show the accuracy of relative difference of about 30%. In the ADS experiments with 14 MeV neutrons and 100 MeV protons, the subcritical experiments are carried out in the thorium-loaded cores to obtain the capture reaction rates through the measurements of {sup 115}In(n, {gamma}){sup 116m}In reactions. The results of the experiments reveal the difference between the reaction rate distributions for the change in not only the neutron spectrum but also the external neutron source. The comparison between the measured and calculated reaction rate distributions demonstrates a discrepancy of the accuracy of reaction rate analyses of thorium capture reactions through the thorium-loaded ADS experiments with 14 MeV neutrons. Hereafter, kinetic experiments are planned to be carried out to deduce the delayed neutron decay constants and subcriticality using the pulsed neutron method. (authors)

Pyeon, C. H.; Yagi, T.; Lim, J. Y.; Misawa, T. [Nuclear Science Engineering Div., Research Reactor Inst., Kyoto Univ., Asashiro-nishi, Kumatori-cho, Sennan-gun, Osaka 590-0494 (Japan)

2012-07-01T23:59:59.000Z

422

Approach for Validating Actinide and Fission Product Compositions for Burnup Credit Criticality Safety Analyses  

SciTech Connect (OSTI)

This paper describes a depletion code validation approach for criticality safety analysis using burnup credit for actinide and fission product nuclides in spent nuclear fuel (SNF) compositions. The technical basis for determining the uncertainties in the calculated nuclide concentrations is comparison of calculations to available measurements obtained from destructive radiochemical assay of SNF samples. Probability distributions developed for the uncertainties in the calculated nuclide concentrations were applied to the SNF compositions of a criticality safety analysis model by the use of a Monte Carlo uncertainty sampling method to determine bias and bias uncertainty in effective neutron multiplication factor. Application of the Monte Carlo uncertainty sampling approach is demonstrated for representative criticality safety analysis models of pressurized water reactor spent fuel pool storage racks and transportation packages using burnup-dependent nuclide concentrations calculated with SCALE 6.1 and the ENDF/B-VII nuclear data. The validation approach and results support a recent revision of the U.S. Nuclear Regulatory Commission Interim Staff Guidance 8.

Radulescu, Georgeta [ORNL; Gauld, Ian C [ORNL; Ilas, Germina [ORNL; Wagner, John C [ORNL

2014-01-01T23:59:59.000Z

423

Burst wait time simulation of CALIBAN reactor at delayed super-critical state  

SciTech Connect (OSTI)

In the past, the super prompt critical wait time probability distribution was measured on CALIBAN fast burst reactor [4]. Afterwards, these experiments were simulated with a very good agreement by solving the non-extinction probability equation [5]. Recently, the burst wait time probability distribution has been measured at CEA-Valduc on CALIBAN at different delayed super-critical states [6]. However, in the delayed super-critical case the non-extinction probability does not give access to the wait time distribution. In this case it is necessary to compute the time dependent evolution of the full neutron count number probability distribution. In this paper we present the point model deterministic method used to calculate the probability distribution of the wait time before a prescribed count level taking into account prompt neutrons and delayed neutron precursors. This method is based on the solution of the time dependent adjoint Kolmogorov master equations for the number of detections using the generating function methodology [8,9,10] and inverse discrete Fourier transforms. The obtained results are then compared to the measurements and Monte-Carlo calculations based on the algorithm presented in [7]. (authors)

Humbert, P. [Commissariat a l'Energie Atomique CEA, Centre de Bruyeres-le-Chatel, 91297 Arpajon (France); Authier, N.; Richard, B.; Grivot, P.; Casoli, P. [Commissariat a l'Energie Atomique CEA, Centre de Valduc, 21120 Is-sur-Tille (France)

2012-07-01T23:59:59.000Z

424

Critical speed measurements in the Tevatron cold compressors  

SciTech Connect (OSTI)

The Fermilab Tevatron cryogenic system utilizes high-speed centrifugal cold compressors, manufactured by Ishikawajima-Harima Heavy Industries Co. Ltd. (IHI), for high energy operations. Nominal operating range for these compressors is 43,000 to 85,000 rpm. Past foil bearing failures prompted investigation to determine if critical speeds for operating compressors fall within operating range. Data acquisition hardware and software settings will be discussed for measuring liftoff, first critical and second critical speeds. Several tests provided comparisons between an optical displacement probe and accelerometer measurements. Vibration data and analysis of the 20 Tevatron ring cold compressors will be presented.

DeGraff, B.; Bossert, R.; Martinez, A.; Soyars, W.M.; /Fermilab

2006-01-01T23:59:59.000Z

425

Critical temperature of antikaon condensation in nuclear matter  

E-Print Network [OSTI]

We investigate the critical temperature of Bose-Einstein condensation of $K^-$ mesons in neutron star matter. This is studied within the framework of relativistic field theoretical models at finite temperature where nucleon-nucleon and (anti)kaon-nucleon interactions are mediated by the exchange of mesons. The melting of the antikaon condensate is studied for different values of antikaon optical potential depths. We find that the critical temperature of antikaon condensation increases with baryon number density. Further it is noted that the critical temperature is lowered as antikaon optical potential becomes less attractive. We also construct the phase diagram of neutron star matter with $K^-$ condensate.

Sarmistha Banik; Walter Greiner; Debades Bandyopadhyay

2008-12-30T23:59:59.000Z

426

Gluon condensation and deconfinement critical density in nuclear matter  

E-Print Network [OSTI]

An upper limit to the critical density for the transition to the deconfined phase, at zero temperature, has been evaluated by analyzing the behavior of the gluon condensate in nuclear matter. Due to the non linear baryon density effects, the upper limit to the critical density, \\rho_c turns out about nine times the saturation density, rho_0 for the value of the gluon condensate in vacuum =0.012 GeV^4. For neutron matter \\rho_c \\simeq 8.5 \\rho_0. The dependence of the critical density on the value of the gluon condensate in vacuum is studied.

M. Baldo; P. Castorina; D. Zappala'

2004-10-07T23:59:59.000Z

427

Evidence of critical balance in kinetic Alfven wave turbulence simulations  

SciTech Connect (OSTI)

A numerical simulation of kinetic plasma turbulence is performed to assess the applicability of critical balance to kinetic, dissipation scale turbulence. The analysis is performed in the frequency domain to obviate complications inherent in performing a local analysis of turbulence. A theoretical model of dissipation scale critical balance is constructed and compared to simulation results, and excellent agreement is found. This result constitutes the first evidence of critical balance in a kinetic turbulence simulation and provides evidence of an anisotropic turbulence cascade extending into the dissipation range. We also perform an Eulerian frequency analysis of the simulation data and compare it to the results of a previous study of magnetohydrodynamic turbulence simulations.

TenBarge, J. M.; Howes, G. G. [Department of Physics and Astronomy, University of Iowa, Iowa City, Iowa 52242 (United States)

2012-05-15T23:59:59.000Z

428

Universality of critical magnetic field in holographic superconductor  

E-Print Network [OSTI]

In this letter we study aspects of the holographic superconductors analytically in the presence of a constant external magnetic field. We show that the critical temperature and critical magnetic field can be calculated at nonzero temperature. We detect the Meissner effect in such superconductors. A universal relation between black hole mass $ M$ and critical magnetic field $H_c$ is proposed as $\\frac{H_c}{M^{2/3}}\\leq 0.687365$. We discuss some aspects of phase transition in terms of black hole entropy and the Bekenstein's entropy to energy upper bound.

D. Momeni; R. Myrzakulov

2015-02-11T23:59:59.000Z

429

Criticality safety assessment of tank 241-C-106 remediation  

SciTech Connect (OSTI)

A criticality safety assessment was performed in support of Project 320 for the retrieval of waste from tank 241-C-106 to tank 241-AY-102. The assessment was performed by a multi-disciplined team consisting of expertise covering the range of nuclear engineering, plutonium and nuclear waste chemistry,and physical mixing hydraulics. Technical analysis was performed to evaluate the physical and chemical behavior of fissile material in neutralized Hanford waste as well as modeling of the fluid dynamics for the retrieval activity. The team has not found evidence of any credible mechanism to attain neutronic criticality in either tank and has concluded that a criticality accident is incredible.

Waltar, A.E., Westinghouse Hanford

1996-07-19T23:59:59.000Z

430

Critical analysis and remedy of switching failures in straintronic logic using Bennett clocking in the presence of thermal fluctuations  

SciTech Connect (OSTI)

Straintronic logic is a promising platform for beyond Moore's law computing. Using Bennett clocking mechanism, information can propagate through an array of strain-mediated multiferroic nanomagnets, exploiting the dipolar coupling between the magnets without having to physically interconnect them. Here, we perform a critical analysis of switching failures, i.e., error in information propagation due to thermal fluctuations through a chain of such straintronic devices. We solved stochastic Landau-Lifshitz-Gilbert equation considering room-temperature thermal perturbations and show that magnetization switching may fail due to inherent magnetization dynamics accompanied by thermally broadened switching delay distribution. Avenues available to circumvent such issue are proposed.

Roy, Kuntal, E-mail: royk@purdue.edu [School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907 (United States)] [School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907 (United States)

2014-01-06T23:59:59.000Z

431

Sandia National Laboratories Information Design Assurance Red TeamTM  

E-Print Network [OSTI]

, and process control system security. Sandia is a multiprogram laboratory operated by Sandia Corporation-disciplinary assessment team working to improve the security of critical systems through systematic analysis using metrics, and tools for analyzing the security robustness of information systems contributing to our

Fuerschbach, Phillip

432

Find It. Delete It. Protect It. Information Technology Security Strategy  

E-Print Network [OSTI]

that security will be a process rather than project. Achievement of the goal, optimized risk management to external best practices and seek external advice on effectiveness. For critical processes and systems valuable information for governance. This process will achieve the long term Internal Controls Maturity

Sheridan, Jennifer

433

Integrating Provenance Information in Reservoir Engineering Jing Zhao, Na Chen  

E-Print Network [OSTI]

that can exploit the additional measurements (such as using the right kind of drilling fluid) for optimized and logging while drilling (LWD) 2 . Designed to replace wireline logging, LWD captures a wealth of additional drilling. Analysis of provenance information has become a critical requirement of data analysis

Prasanna, Viktor K.

434

Spatial Literacy, Geographical Information Technologies, and Solutions to Societal Problems  

E-Print Network [OSTI]

, building with Lego or daydreaming." National Research Council report Learning to Think Spatially, 2006 #12 ­ Geographic information systems (GIS) ­ Global positioning systems (GPS) ­ Satellite remote sensing Office of Emergency Management and NY Office of Cyber Security and Critical Infrastructure Coordination

Fabrikant, Sara Irina

435

NOAA Satellite and Information Service Deep Space Climate Observatory (DSCOVR)  

E-Print Network [OSTI]

such as the commercial airline, electric power and GPS industries. Our national security and economic well-being, whichNOAA Satellite and Information Service Deep Space Climate Observatory (DSCOVR) Background: DSCOVR will maintain the Nation's solar wind observations, which are critical to maintaining the accuracy and lead time

436

Method for making graded I-III-VI.sub.2 semiconductors and solar cell obtained thereby  

DOE Patents [OSTI]

Improved cell photovoltaic conversion efficiencies are obtained by the simultaneous elemental reactive evaporation process of Mickelsen and Chen for making semiconductors by closer control of the evaporation rates and substrate temperature during formation of the near contact, bulk, and near junction regions of a graded I-III-VI.sub.2, thin film, semiconductor, such as CuInSe.sub.2 /(Zn,Cd)S or another I-III-VI.sub.2 /II-VI heterojunction.

Devaney, Walter E. (Seattle, WA)

1987-08-04T23:59:59.000Z

437

Hydrodynamic equations for electrons in graphene obtained from the maximum entropy principle  

SciTech Connect (OSTI)

The maximum entropy principle is applied to the formal derivation of isothermal, Euler-like equations for semiclassical fermions (electrons and holes) in graphene. After proving general mathematical properties of the equations so obtained, their asymptotic form corresponding to significant physical regimes is investigated. In particular, the diffusive regime, the Maxwell-Boltzmann regime (high temperature), the collimation regime and the degenerate gas limit (vanishing temperature) are considered.

Barletti, Luigi, E-mail: luigi.barletti@unifi.it [Dipartimento di Matematica e Informatica “Ulisse Dini”, Università degli Studi di Firenze, Viale Morgagni 67/A, 50134 Firenze (Italy)

2014-08-15T23:59:59.000Z

438

Impact of Fuel Failure on Criticality Safety of Used Nuclear Fuel  

SciTech Connect (OSTI)

Commercial used nuclear fuel (UNF) in the United States is expected to remain in storage for considerably longer periods than originally intended (e.g., <40 years). Extended storage (ES) time and irradiation of nuclear fuel to high-burnup values (>45 GWd/t) may increase the potential for fuel failure during normal and accident conditions involving storage and transportation. Fuel failure, depending on the severity, can result in changes to the geometric configuration of the fuel, which has safety and regulatory implications. The likelihood and extent of fuel reconfiguration and its impact on the safety of the UNF is not well understood. The objective of this work is to assess and quantify the impact of fuel reconfiguration due to fuel failure on criticality safety of UNF in storage and transportation casks. This effort is primarily motivated by concerns related to the potential for fuel degradation during ES periods and transportation following ES. The criticality analyses consider representative UNF designs and cask systems and a range of fuel enrichments, burnups, and cooling times. The various failed-fuel configurations considered are designed to bound the anticipated effects of individual rod and general cladding failure, fuel rod deformation, loss of neutron absorber materials, degradation of canister internals, and gross assembly failure. The results quantify the potential impact on criticality safety associated with fuel reconfiguration and may be used to guide future research, design, and regulatory activities. Although it can be concluded that the criticality safety impacts of fuel reconfiguration during transportation subsequent to ES are manageable, the results indicate that certain configurations can result in a large increase in the effective neutron multiplication factor, k{sub eff}. Future work to inform decision making relative to which configurations are credible, and therefore need to be considered in a safety evaluation, is recommended.

Marshall, William BJ J [ORNL] [ORNL; Wagner, John C [ORNL] [ORNL

2012-01-01T23:59:59.000Z

439

Method and apparatus of periodically obtaining accurate opacity monitor readings of an exhaust gas stream  

SciTech Connect (OSTI)

This patent describes in an opacity monitor associated with an exhaust stack, the monitor having a transmitter and a receiving which cooperate to measure a quantity of particulate matter in an exhaust gas stream, a method of periodically obtaining opacity monitor readings. It comprises: shielding the monitor from the exhaust gas stream by placing two windows adjacent to the monitor, a first window being placed between the transmitter and the exhaust gas stream and a second window being placed between the receiver and the exhaust gas stream; cleaning at least one of the windows for a first predetermined time period by spraying a volatile nonflammable cleaning solvent onto the window by means of a sprayer intermittently operable during the first predetermined time period while wiping the window with a reciprocating wiper arm in resilient engagement therewith; then obtaining an opacity monitor reading by directing a light beam across the exhaust stack from the transmitter via the first window through the exhaust gas stream to the receiver via the second window; and alternately repeating the step of cleaning the window with the step of obtaining an opacity monitor reading.

Weaver, K.L.; Bellows, J.C.

1990-01-23T23:59:59.000Z

440

Rigidity-dependent cosmic ray energy spectra in the knee region obtained with the GAMMA experiment  

E-Print Network [OSTI]

On the basis of the extensive air shower (EAS) data obtained by the GAMMA experiment, the energy spectra and elemental composition of the primary cosmic rays are derived in the 1-100 PeV energy range. The reconstruction of the primary energy spectra is carried out using an EAS inverse approach in the framework of the SIBYLL2.1 and QGSJET01 interaction models and the hypothesis of power-law primary energy spectra with rigidity-dependent knees. The energy spectra of primary H, He, O-like and Fe-like nuclei obtained with the SIBYLL interaction model agree with corresponding extrapolations of the balloon and satellite data to ~1 PeV energies. The energy spectra obtained from the QGSJET model show a predominantly proton composition in the knee region. The rigidity-dependent knee feature of the primary energy spectra for each interaction model is displayed at the following rigidities: ~2.5+/-0.2 PV (SIBYLL) and ~3.1-4.2 PV (QGSJET). All the results presented are derived taking into account the detector response, the reconstruction uncertainties of the EAS parameters, and fluctuations in the EAS development.

A. P. Garyaka; R. M. Martirosov; S. V. Ter-Antonyan; N. Nikolskaya; Y. A. Gallant; L. Jones; J. Procureur

2007-04-24T23:59:59.000Z

Note: This page contains sample records for the topic "obtain information critical" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Rigidity-dependent cosmic ray energy spectra in the knee region obtained with the GAMMA experiment  

E-Print Network [OSTI]

On the basis of the extensive air shower (EAS) data obtained by the GAMMA experiment, the energy spectra and elemental composition of the primary cosmic rays are derived in the 1-100 PeV energy range. The reconstruction of the primary energy spectra is carried out using an EAS inverse approach in the framework of the SIBYLL2.1 and QGSJET01 interaction models and the hypothesis of power-law primary energy spectra with rigidity-dependent knees. The energy spectra of primary H, He, O-like and Fe-like nuclei obtained with the SIBYLL interaction model agree with corresponding extrapolations of the balloon and satellite data to ~1 PeV energies. The energy spectra obtained from the QGSJET model show a predominantly proton composition in the knee region. The rigidity-dependent knee feature of the primary energy spectra for each interaction model is displayed at the following rigidities: ~2.5+/-0.2 PV (SIBYLL) and ~3.1-4.2 PV (QGSJET). All the results presented are derived taking into account the detector response, th...

Garyaka, A P; Ter-Antonian, S V; Nikolskaya, N; Gallant, Y A; Jones, L; Procureur, J

2007-01-01T23:59:59.000Z

442

Rocky Flats CAAS System Recalibrated, Retested, and Analyzed to Install in the Criticality Experiments Facility at the Nevada Test Site  

E-Print Network [OSTI]

sponsorship of the DOE Nuclear Criticality Safety Program.Improved Criticality Alarm System,” Proceedings of Nuclear

2009-01-01T23:59:59.000Z

443

Critical coupling and coherent perfect absorption for ranges of energies due to a complex gain and loss symmetric system  

E-Print Network [OSTI]

We consider a non-Hermitian medium with a gain and loss symmetric, exponentially damped potential distribution to demonstrate different scattering features analytically. The condition for critical coupling (CC) for unidirectional wave and coherent perfect absorption (CPA) for bidirectional waves are obtained analytically for this system. The energy points at which total absorption occurs are shown to be the spectral singular points for the time reversed system. The possible energies at which CC occurs for left and right incidence are different. We further obtain periodic intervals with increasing periodicity of energy for CC and CPA to occur in this system.

Mohammad Hasan; Ananya Ghatak; Bhabani Prasad Mandal

2014-03-03T23:59:59.000Z

444

Analysis of a hypothetical criticality accident in a waste supercompactor  

SciTech Connect (OSTI)

A hypothetical nuclear criticality accident in a waste supercompactor is evaluated. The waste consists of a homogenous mixture of plutonium 49, beryllium, and air contained in a 35 gallon carbon steel drum. Possible consequences are investigated.

Plaster, M.J.; Basoglu, B.; Bentley, C.L.; Dunn, M.E.; Ruggles, A.E.; Wilkinson, A.; Yamamoto, T.; Dodds, H.L. [Univ. of Tennessee, Knoxville, TN (United States)

1994-12-31T23:59:59.000Z

445

Quantum superconducting criticality in graphene and topological insulators  

E-Print Network [OSTI]

The field theory of the semimetal-superconductor quantum phase transition for graphene and surface states of topological insulators is presented. The Lagrangian possesses the global U(1) symmetry, with the self-interacting complex bosonic order-parameter and the massless Dirac fermions coupled through a Yukawa term. The same theory also governs the quantum critical behavior of graphene near the transition towards the bond-density-wave (Kekule) insulator. The local U(1) gauged version of the theory which describes the quantum semimetal-superconductor transition in the ultimate critical regime is also considered. Due to the Yukawa coupling the transitions are found to be always continuous, both with and without the fluctuating gauge field. The critical behavior is addressed within the dimensional regularization near four space-time dimensions, and the calculation of various universal quantities, including critical exponents and the universal mass-ratio, is reported.

Bitan Roy; Vladimir Juricic; Igor F. Herbut

2013-01-10T23:59:59.000Z

446

3 LANSCE: Mission-Critical for National Security  

E-Print Network [OSTI]

. LANSCE is a mission-critical facility for the National Nuclear Security Administration (NNSA) and the Department of Energy (DOE). In 2011, the NNSA renewed the memorandum of understanding that affirms

447

Criticality Safety Controls Implementation, May 31, 2013 (HSS...  

Broader source: Energy.gov (indexed) [DOE]

Implementation, May 31, 2013 (HSS CRAD 45-18, Rev. 1) More Documents & Publications CRAD, Criticality Safety Controls Implementation - May 31, 2013 DOE-STD-1158-2010 Application of...

448

NSS 18.1 Criticality Safety 5/26/95  

Broader source: Energy.gov [DOE]

The objective of this surveillance is to ensure that effective programs have been developed and implemented to protect the public and DOE's workers from unplanned criticality.  The programs should...

449

Effective critical electric field for runaway electron generation  

E-Print Network [OSTI]

In this letter we investigate factors that influence the effective critical electric field for runaway electron generation in plasmas. We present numerical solutions of the kinetic equation, and discuss the implications for the threshold electric field. We show that the effective electric field necessary for significant runaway formation often is higher than previously calculated due to both (1) extremely strong dependence of primary generation on temperature, and (2) synchrotron radiation losses. We also address the effective critical field in the context of a transition from runaway growth to decay. We find agreement with recent experiments, but show that the observation of an elevated effective critical field can mainly be attributed to changes in the momentum-space distribution of runaways, and only to a lesser extent to a de facto change in the critical field.

Stahl, Adam; Decker, Joan; Embréus, Ola; Fülöp, Tünde

2014-01-01T23:59:59.000Z

450

albicans critical role: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

240 kilograms of plutonium oxide 5 Standards for Quality and the Coordinating Role of Wine Critics CiteSeer Summary: When product quality matters but is not observable before...

451

Determination of pool boiling Critical Heat Flux enhancement in nanofluids  

E-Print Network [OSTI]

Nanofluids are engineered colloids composed of nano-size particles dispersed in common fluids such as water or refrigerants. Using an electrically controlled wire heater, pool boiling Critical Heat Flux (CHF) of Alumina ...

Truong, Bao H. (Bao Hoai)

2007-01-01T23:59:59.000Z

452

Experimental bond critical point and local energy density properties...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Mn-O, Fe-O and Co-O bonded interactions for Abstract: Bond critical point, bcp, and local energy density properties for the electron density, ED, distributions, calculated with...

453

U-215: Oracle Critical Patch Update Advisory- July 2012  

Broader source: Energy.gov [DOE]

Critical Patch Updates are the primary means of releasing security fixes for Oracle products to customers with valid support contracts. They are released on the Tuesday closest to the 17th day of January, April, July and October.

454

Globalization and the sociology of Immanuel Wallerstein: A critical appraisal  

E-Print Network [OSTI]

Globalization and the Postcolonial World: The New Political Economyglobalization, including rampant financial speculation in the world-economy,economy, and assess these con- tributions from what I have termed a critical globalization

Robinson, William I.

2011-01-01T23:59:59.000Z

455

Jefferson Lab News - Jefferson Lab Achieves Critical Milestone...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Achieves Critical Milestone Toward Construction of 310-Million Upgrade Project Pion This architectural rendering shows the Hall D complex to be built as part of the CEBAF 12 GeV...

456

Critical Writing Assessment Rubric (Blind Review) Revised 2010  

E-Print Network [OSTI]

W Critical Writing Assessment Rubric (Blind Review) Revised 2010 Paper Code: ___________ Date Reviewed: ___________ Reader: ___________ (Initials) 1. Thesis The essay contains a clear and relevant thesis. 0 ___ 1 ___ 2 ___ 3 ___ 4 ___ 2. Organization The paragraphs are logically ordered within

Wilson, Mark A.

457

Towards verifiable adaptive control for safety critical applications  

E-Print Network [OSTI]

To be implementable in safety critical applications, adaptive controllers must be shown to behave strictly according to predetermined specifications. This thesis presents two tools for verifying specifications relevant to ...

Schwager, Mac

2005-01-01T23:59:59.000Z

458

Critically Evaluated Thermochemical Properties of Polycyclic Aromatic Hydrocarbons  

E-Print Network [OSTI]

, Spain James S. Chickos Department of Chemistry and Biochemistry, University of Missouri-St. Louis, One with sublimation, vaporization, and fusion enthalpies, are critically evaluated. Whenever possible, recommended. . . . . . . . . . . . . . . . 1867 3.2. Sublimation enthalpies. . . . . . . . . . . . . . . . . 1867 3.3. Fusion Enthalpies

Chickos, James S.

459

Thermodynamic and transport property modeling in super critical water  

E-Print Network [OSTI]

Supercritical water oxidation (SCWO) is a thermally-based, remediation and waste-treatment process that relies on unique property changes of water when water is heated and pressurized above its critical point. Above its ...

Kutney, Michael C. (Michael Charles)

2005-01-01T23:59:59.000Z

460

Bazaar [+] : addressing critical adjacencies in Mumbai's urban farm  

E-Print Network [OSTI]

This thesis focuses on the city of Mumbai, and evolves the notion of how "critical adjacency" has been instrumental in guiding the city's urban transformations into modernity. Presently, Mumbai experiences some of the ...

Bhat, Arjun (Arjun Devadas)

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "obtain information critical" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Model of critical heat flux in subcooled flow boiling  

E-Print Network [OSTI]

The physical phenomenon occurring before and at the critical heat flux (CHF) for subcooled flow boiling has been investigated. The first phase of this study established the basic nature of the flow structure at CHF. A ...

Fiori, Mario P.

1968-01-01T23:59:59.000Z

462

Criticality and axial offset searches based on the integrated neutron balance approach  

SciTech Connect (OSTI)

Criticality and axial offset (AO) searches are key features in the simulation of plant operation procedures. Typically, the dedicated algorithms consist of either a Newton method or a secant method that features the successive computation of difference quotients to be used as derivatives. Within this context, computational robustness and efficiency are of paramount importance. This applies in particular to when the variations imposed during the search are spatially heterogeneous, such as in the case of tuning control rod positions for achieving target AO. In order to optimize this kind of search capability in AREVA NP's reactor code ARTEMIS in accordance with this design principle, a generalized approach has been implemented that harmonizes very well numerically with the overall multi-physics iterative solution process. As embedded in the latter, the new neutronic integral re-balancing approach is defined through periodic whole-core space-energy integrations of the principal terms in the core-integrated process-rate balance terms (i.e. neutron absorption, production and leakage). This procedure yields sequences of single zero-dimensional equations from which the chosen tuning parameters can be solved directly in dependence of the imposed (and systematically fixed) values for the response quantities k{sub eff} and/or AO. The converged result of the iteration sequence of successively obtained search parameter values is final in terms of being fully consistent with the entire set of multi-physics equations while enabling the accurate fulfillment of the target response value. The k etc and AO searches can be pursued simultaneously. Judging from the results of pursued verifications, the neutronic integral re-balancing approach fulfils the above-mentioned expectations convincingly. Specific verification examples are presented, such as the determination of the insertion depth of a critical control bank, a double search on target criticality and target AO by adjusting the boron concentration and the position of a control bank, and a critical power search during reactor cycle stretch out. (authors)

Dall'Osso, A. [AREVA NP Tour AREVA, 92084 Paris La Defense Cedex (France); Van Geemert, R. [AREVA GmbH, Paul Gossenstrasse 100, D-91058 Erlangen (Germany)

2013-07-01T23:59:59.000Z

463

Networks, Information & Social Capital  

E-Print Network [OSTI]

This paper investigates how information flows enable social networks to constitute social capital. By analyzing

Aral, Sinan

2008-01-26T23:59:59.000Z

464

Department of Information Technology  

E-Print Network [OSTI]

Department of Information Technology Human-Computer Interaction http://www.it.uu.se/research/hci #12;InformationTechnology-HCI Department of Information Technology | www.it.uu.se Today's menu Who we and collaboration Teaching KoF 2007, effects? Vision and plans Challenges #12;InformationTechnology

Flener, Pierre

465

Nuclear Regulatory Commission Information Digest, 1991 edition  

SciTech Connect (OSTI)

The Nuclear Regulatory Commission Information Digest provides a summary of information about the US Nuclear Regulatory Commission (NRC), NRC's regulatory responsibilities, and the areas NRC licenses. This digest is a compilation of NRC-related data and is designed to provide a quick reference to major facts about the agency and the industry it regulates. In general, the data cover 1975 through 1990, with exceptions noted. For operating US commercial nuclear power reactors, information on generating capacity and average capacity factor is obtained from Monthly Operating Reports submitted to the NRC directly by the licensee. This information is reviewed for consistency only. No independent validation and/or verification is performed by the NRC. For detailed and complete information about tables and figures, refer to the source publications. This digest is published annually for the general use of the NRC staff and is available to the public. 30 figs., 12 tabs.

Olive, K L

1991-03-01T23:59:59.000Z

466

Influence of safeguards and fire protection on criticality safety  

SciTech Connect (OSTI)

There are several positive influences of safeguards and fire protection on criticality safety. Experts in each discipline must be aware of regulations and requirements of the others and work together to ensure a fault-tree design. EG and G Idaho, Inc., routinely uses an Occupancy-Use Readiness Manual to consider all aspects of criticality safety, fire protection, and safeguards. The use of the analytical tree is described.

Six, D E

1980-01-01T23:59:59.000Z

467

Effect of topology on the critical charge in graphene  

E-Print Network [OSTI]

We show that the critical charge for the Dirac excitations in gapless graphene depends on the spatial topology of the sample. In particular, for graphene cones, the effective value of the critical charge can tend towards zero for a suitable angle of the conical sample. We discuss the nature of the scattering phase shifts, quasi-bound state energies and local density of states for a gapless graphene cone and determine the dependence of these physical quantities on the sample topology.

Baishali Chakraborty; Kumar S. Gupta; Siddhartha Sen

2010-11-18T23:59:59.000Z

468

An evaluation of the critical mechanical properties of filled elastomers  

E-Print Network [OSTI]

AN EVALUATION OF THE CRITICAL MECHANICAL PROPERTIES OF FILLED ELASTOMERS A Thesis By PATRICK ARTHUR GIBSON Submitted to the Graduate College of the Texas ASM University in partial fulfillment of the requirements for the degree of MASTER... possible. ABSTRACT An Evaluation of the Critical Mechanical Properties of Filled Elastomers Patrick A. Gibson, B. S. , Texas ASM University Directed by: Dr. William B. Ledbetter A test procedure is developed for the uniaxial tensile testing...

Gibson, Patrick Arthur

2012-06-07T23:59:59.000Z

469

Salmonella detection and critical control point determination during poultry processing  

E-Print Network [OSTI]

SALMONELLA DETECTION AND CRITICAL CONTROL POINT DETERMINATION DURING POULTRY PROCESSING A Thesis by SUZANNE D. Y O U N G Submitted to the Office of Graduate Studies of Texas A & M University in partial fulfillment of the requirements... for the degree of M A S T E R OF SCIENCE May 2000 Major Subject: Poultry Science SALMONELLA DETECTION AND CRITICAL CONTROL POINT DETERMINATION DURING POULTRY PROCESSING A Thesis by SUZANNE D. Y O U N G Submitted to the Office of Graduate Studies...

Young, Suzanne D.

2000-01-01T23:59:59.000Z

470

Technical Information Officers | Scientific and Technical Information...  

Office of Scientific and Technical Information (OSTI)

are incorporated into strategic planning, management information plans, life-cycle procedures from project initiation to close-out, and contract language as appropriate....

471

CONTACTS FOR INFORMATION MANAGEMENT: Forms, Information Collection...  

Broader source: Energy.gov (indexed) [DOE]

(Lead) Christina "Chris" Rouleau Phone: 301-903-6227 Email: Christina.Rouleau@hq.doe.gov Information Collection Management Program (Lead) Deidra "Dee Dee" Wilkinson Phone:...

472

Criticality safety analysis on fissile materials in Fukushima reactor cores  

SciTech Connect (OSTI)

The present study focuses on the criticality analysis for geological disposal of damaged fuels from Fukushima reactor cores. Starting from the basic understanding of behaviors of plutonium and uranium, a scenario sequence for criticality event is considered. Due to the different mobility of plutonium and uranium in geological formations, the criticality safety is considered in two parts: (1) near-field plutonium system and (2) far-field low enriched uranium (LEU) system. For the near-field plutonium system, a mathematical analysis for pure-solute transport was given, assuming a particular buffer material and waste form configuration. With the transport and decay of plutonium accounted, the critical mass of plutonium was compared with the initial load of a single canister. Our calculation leads us to the conclusion that our system with the initial loading being the average mass of plutonium in an assembly just before the accident is very unlikely to become critical over time. For the far-field LEU system, due to the uncertainties in the geological and geochemical conditions, calculations were made in a parametric space that covers the variation of material compositions and different geometries. Results show that the LEU system could not remain sub-critical within the entire parameter space assumed, although in the iron-rich rock, the neutron multiplicity is significantly reduced.

Liu, Xudong; Lemaitre-Xavier, E.; Ahn, Joonhong [Department of Nuclear Engineering, University of California, Berkeley, Berkeley, CA 94720 (United States); Hirano, Fumio [Japan Atomic Energy Agency, Geological Isolation Research and Development Directorate, Tokai-mura, Ibaraki 319-1194 (Japan)

2013-07-01T23:59:59.000Z

473

Challenges in Obtaining Property Access: The FUSRAP Maywood Site Experience - 13433  

SciTech Connect (OSTI)

The Formerly Utilized Sites Remedial Action Program (FUSRAP) is the US government program started in 1974 to identify, investigate and clean up or control sites that became contaminated as a result of the nation's early atomic programs. Many of these sites are not owned by the federal government and therefore require owner permission to enter. The experience in pursuing such access at the FUSRAP Maywood Superfund Site (the Maywood Site or the Site) in Bergen County, New Jersey, is extensive. Since the US Army Corps of Engineers (the Corps) assumed responsibility for the Maywood Site from the US Department of Energy in 1997, at least 186 separate property access agreements (known in FUSRAP as a Real Estate Right-of- Entry or ROE) have been executed between the Corps and approximately 55 different land owners and tenant occupants at the Maywood Site (agreement renewals with the same owners over time account for the difference). Maywood's experience during the Corps' tenure, reflected here in three case studies of representative property access efforts, offers some lessons and best practices that may apply to other remedial programs. While the Site Community Relations Manager (the author of this paper) managed the property access task, multi-disciplinary support from across the project was also critical to success in this endeavor. (authors)

Kollar, William [Shaw Environmental, Inc., 100 West Hunter Avenue, Maywood, NJ 07607 (United States)] [Shaw Environmental, Inc., 100 West Hunter Avenue, Maywood, NJ 07607 (United States)

2013-07-01T23:59:59.000Z

474

Nuclear criticality safety experiments, calculations, and analyses - 1958 to 1982. Volume 2. Summaries. Complilation of papers from the Transactions of the American Nuclear Society  

SciTech Connect (OSTI)

This compilation contains 688 complete summaries of papers on nuclear criticality safety as presented at meetings of the American Nuclear Society (ANS). The selected papers contain criticality parameters for fissile materials derived from experiments and calculations, as well as criticality safety analyses for fissile material processing, transport, and storage. The compilation was developed as a component of the Nuclear Criticality Information System (NCIS) now under development at the Lawrence Livermore National Laboratory. The compilation is presented in two volumes: Volume 1 contains a directory to the ANS Transaction volume and page number where each summary was originally published, the author concordance, and the subject concordance derived from the keyphrases in titles. Volume 2 contains-in chronological order-the full-text summaries, reproduced here by permission of the American Nuclear Society from their Transactions, volumes 1-41.

Koponen, B.L.; Hampel, V.E.

1982-10-21T23:59:59.000Z

475

Mission-Critical Platform for Online Transaction Processing (OLTP) SQL Server 2008 Mission-Critical Platform for OLTP Data Solutions  

E-Print Network [OSTI]

Mission-Critical Platform for Online Transaction Processing (OLTP) SQL Server 2008 Mission Data Collector to troubleshoot and tune SQL Server 2008 instances. Help ensure compliance 2008 high- performance query processing engine for industry leading performance and scalability. Define

Bernstein, Phil

476

Emergency Preparedness Sector Coordinators (EP) are a critical part of the campus effort to improve our emergency preparedness. Sector Coords. will serve as a network of university  

E-Print Network [OSTI]

Emergency Preparedness Sector Coordinators (EP) are a critical part of the campus effort to improve the EP Zone Coord. While this assignment will result in some extra work, it will prove to be rewarding to a sector. The network will provide better information and services to the "occupants" of the area. EP

Tennessee, University of

477

Results of the 2013 UT modeling benchmark obtained with models implemented in CIVA  

SciTech Connect (OSTI)

The 2013 Ultrasonic Testing (UT) modeling benchmark concerns direct echoes from side drilled holes (SDH), flat bottom holes (FBH) and corner echoes from backwall breaking artificial notches inspected with a matrix phased array probe. This communication presents the results obtained with the models implemented in the CIVA software: the pencilmodel is used to compute the field radiated by the probe, the Kirchhoff approximation is applied to predict the response of FBH and notches and the SOV (Separation Of Variables) model is used for the SDH responses. The comparison between simulated and experimental results are presented and discussed.

Toullelan, Gwénaël; Raillon, Raphaële; Chatillon, Sylvain [CEA, LIST, 91191Gif-sur-Yvette (France); Lonne, Sébastien [EXTENDE, Le Bergson, 15 Avenue Emile Baudot, 91300 MASSY (France)

2014-02-18T23:59:59.000Z

478

Comparison of product yields obtained from the New Albany Shale by different rapid heating retorting procedures  

SciTech Connect (OSTI)

Seven samples of New Albany Shale, Clegg Creek Member were independently evaluated for possible oil yield enhancement above Fischer Assay. Bulk samples were crushed, blended, sieved and riffled into representative aliquots and then divided between two laboratories. Samples were evaluated by the ASTM Fischer Assay and the Rapid Heat Up Assay (RHU). Results provided the first case of the independent evaluation of oil yield enhancement over Fischer Assay (FA) for eastern US oil shales carried out by different laboratories working on the same samples. Oil yield enhancements were obtained by both laboratories. Fischer Assay results were remarkably comparable indicating that reproducibility is possible for eastern US shale. Results from the assays are given.

Rubel, A.M.; Audeh, C.A.

1985-02-01T23:59:59.000Z

479

Reduction of CCD observations obtained with the Fabry-Perot scanning interferometer. II. Additional Procedures  

E-Print Network [OSTI]

We describe a software package used at the Special Astrophysical Observatory of the Russian Academy of Sciences to reduce and analyze the data obtained with the Fabry-Perot scanning interferometer. We already described most of the algorithms employed in our earlier Paper I (Moiseev, 2002). In this paper we focus on extra procedures required in the case of the use of a high-resolution Fabry-Perot interferometer: removal of ghosts and measurement of the velocity dispersion of ionized gas in galactic and extragalactic objects.

A. V. Moiseev; O. V. Egorov

2008-05-15T23:59:59.000Z

480

Optimization and modeling studies for obtaining high injection efficiency at the Advanced Photon Source.  

SciTech Connect (OSTI)

In recent years, the optics of the Advanced Photon Source storage ring has evolved to a lower equilibrium emittance (2.5 nm-rad) at the cost of stronger sextupoles and stronger nonlinearities, which have reduced the injection efficiency from the virtual 100% of the high emittance mode. Over the years we have developed a series of optimizations, measurements, and modeling studies of the injection process, which allows us to obtain or maintain low injection losses. The above will be described along with the injection configuration.

Emery, L.; APS Operations Division

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "obtain information critical" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Hamiltonian structure of reduced fluid models for plasmas obtained from a kinetic description  

E-Print Network [OSTI]

We consider the Hamiltonian structure of reduced fluid models obtained from a kinetic description of collisionless plasmas by Vlasov-Maxwell equations. We investigate the possibility of finding Poisson subalgebras associated with fluid models starting from the Vlasov-Maxwell Poisson algebra. In this way, we show that the only possible Poisson subalgebra involves the moments of zeroth and first order of the Vlasov distribution, meaning the fluid density and the fluid velocity. We find that the bracket derived in [Phys. Rev. Lett. 93, 175002 (2004)] which involves moments of order 2 is not a Poisson bracket since it does not satisfy the Jacobi identity.

Loïc De Guillebon; Cristel Chandre

2012-04-19T23:59:59.000Z

482

Page 1 of 2 Rev. 7/05 Request for Alien Information for Miscellaneous Income Payments  

E-Print Network [OSTI]

Page 1 of 2 Rev. 7/05 Request for Alien Information for Miscellaneous Income Payments IMPORTANT ­ Request for Alien Information is used to obtain basic taxpayer information for aliens. Part 2 for Alien Information: *Payee's Social Security Number or Individual Tax Identification Number

Krovi, Venkat

483

The Relationships of Media, Task, Spatial Presence, and Critical Thinking, in an Online Tutorial Designed to Teach Art Criticism  

E-Print Network [OSTI]

THE RELATIONSHIPS OF MEDIA, TASK, SPATIAL PRESENCE, AND CRITICAL THINKING, IN AN ONLINE TUTORIAL DESIGNED TO TEACH ART CRITICISM A Dissertation by NANCY OSTERBERG WOOD Submitted to the Office of Graduate and Professional Studies of Texas A... in an online research tutorial. The four conditions comprised two levels of two factors: Media and Task. The two Media were Static, represented by a linked jpeg image of the artwork; and Dynamic Manipulation represented by an interactive Adobe Flash version...

Wood, Nancy O

2013-11-08T23:59:59.000Z

484

A New Curriculum for Information Literacy (ANCIL)- Executive Summary  

E-Print Network [OSTI]

, new literacies, media literacy and digital literacy. At the heart of many of these other literacies is a desire to develop critical thinking, evaluation and high level cognitive skills in students. This is the essence of what information literacy seeks...  revolutionary curriculum for information literacy that can be used with undergraduate students entering UK higher education  • To provide practical guidance about how best to equip students with the knowledge, skills and behaviour around information use to support their learning in the digital...

Coonan, Emma; Secker, Jane

485

Risk assessment activities at NIOSH: Information resources and needs  

SciTech Connect (OSTI)

Under the Occupational Safety and Health, and Mine Safety and Health Acts, the National Institute for Occupational Safety and Health (NIOSH) is charged with development of recommended occupational safety and health standards, and with conducting research to support the development of these standards. Thus, NIOSH has been actively involved in the analysis of risk associated with occupational exposures, and in the development of research information that is critical for the risk assessment process. NIOSH research programs and other information resources relevant to the risk assessment process are described in this paper. Future needs for information resources are also discussed.

Stayner, L.T.; Meinhardt, T.; Hardin, B. [National Institute for Occupational Safety and Health, Cincinnati, OH (United States)

1990-12-31T23:59:59.000Z

486

Information Management in Health Administration College of Public Health and Health Professions  

E-Print Network [OSTI]

. Required texts: Wager, Lee, Glaser. Health Care Information Systems. 2nd edition. (2009) John Wiley for Health: Using Electronic Health Records to Transform Care Delivery. 1st edition. (2010) Jossey-Bass ISBN to timely, complete, accurate, legible and relevant information is critical to health care organizations

Kane, Andrew S.

487

Section 4 -Financial Information A. General Information  

E-Print Network [OSTI]

Section 4 - Financial Information A. General Information 1. All University Housing and Dining fees. The security deposit, less any charges for damages, will be returned approximately ten weeks after the end according to Section 5 ­ Termination of Occupancy, will result in the forfeiture of the security deposit

Pantaleone, Jim

489

Obtaining accurate amounts of mercury from mercury compounds via electrolytic methods  

DOE Patents [OSTI]

A process for obtaining pre-determined, accurate rate amounts of mercury. In one embodiment, predetermined, precise amounts of Hg are separated from HgO and plated onto a cathode wire. The method for doing this involves dissolving a precise amount of HgO which corresponds to a pre-determined amount of Hg desired in an electrolyte solution comprised of glacial acetic acid and H.sub.2 O. The mercuric ions are then electrolytically reduced and plated onto a cathode producing the required pre-determined quantity of Hg. In another embodiment, pre-determined, precise amounts of Hg are obtained from Hg.sub.2 Cl.sub.2. The method for doing this involves dissolving a precise amount of Hg.sub.2 Cl.sub.2 in an electrolyte solution comprised of concentrated HCl and H.sub.2 O. The mercurous ions in solution are then electrolytically reduced and plated onto a cathode wire producing the required, pre-determined quantity of Hg.

Grossman, Mark W. (Belmont, MA); George, William A. (Rockport, MA)

1987-01-01T23:59:59.000Z

490

Obtaining accurate amounts of mercury from mercury compounds via electrolytic methods  

DOE Patents [OSTI]

A process is described for obtaining pre-determined, accurate rate amounts of mercury. In one embodiment, predetermined, precise amounts of Hg are separated from HgO and plated onto a cathode wire. The method for doing this involves dissolving a precise amount of HgO which corresponds to a pre-determined amount of Hg desired in an electrolyte solution comprised of glacial acetic acid and H[sub 2]O. The mercuric ions are then electrolytically reduced and plated onto a cathode producing the required pre-determined quantity of Hg. In another embodiment, pre-determined, precise amounts of Hg are obtained from Hg[sub 2]Cl[sub 2]. The method for doing this involves dissolving a precise amount of Hg[sub 2]Cl[sub 2] in an electrolyte solution comprised of concentrated HCl and H[sub 2]O. The mercurous ions in solution are then electrolytically reduced and plated onto a cathode wire producing the required, pre-determined quantity of Hg. 1 fig.

Grossman, M.W.; George, W.A.

1987-07-07T23:59:59.000Z

491

KENO-VI Primer: A Primer for Criticality Calculations with SCALE/KENO-VI Using GeeWiz  

SciTech Connect (OSTI)

The SCALE (Standardized Computer Analyses for Licensing Evaluation) computer software system developed at Oak Ridge National Laboratory is widely used and accepted around the world for criticality safety analyses. The well-known KENO-VI three-dimensional Monte Carlo criticality computer code is one of the primary criticality safety analysis tools in SCALE. The KENO-VI primer is designed to help a new user understand and use the SCALE/KENO-VI Monte Carlo code for nuclear criticality safety analyses. It assumes that the user has a college education in a technical field. There is no assumption of familiarity with Monte Carlo codes in general or with SCALE/KENO-VI in particular. The primer is designed to teach by example, with each example illustrating two or three features of SCALE/KENO-VI that are useful in criticality analyses. The primer is based on SCALE 6, which includes the Graphically Enhanced Editing Wizard (GeeWiz) Windows user interface. Each example uses GeeWiz to provide the framework for preparing input data and viewing output results. Starting with a Quickstart section, the primer gives an overview of the basic requirements for SCALE/KENO-VI input and allows the user to quickly run a simple criticality problem with SCALE/KENO-VI. The sections that follow Quickstart include a list of basic objectives at the beginning that identifies the goal of the section and the individual SCALE/KENO-VI features that are covered in detail in the sample problems in that section. Upon completion of the primer, a new user should be comfortable using GeeWiz to set up criticality problems in SCALE/KENO-VI. The primer provides a starting point for the criticality safety analyst who uses SCALE/KENO-VI. Complete descriptions are provided in the SCALE/KENO-VI manual. Although the primer is self-contained, it is intended as a companion volume to the SCALE/KENO-VI documentation. (The SCALE manual is provided on the SCALE installation DVD.) The primer provides specific examples of using SCALE/KENO-VI for criticality analyses; the SCALE/KENO-VI manual provides information on the use of SCALE/KENO-VI and all its modules. The primer also contains an appendix with sample input files.

Bowman, Stephen M [ORNL

2008-09-01T23:59:59.000Z

492

Nuclear Criticality Safety Application Guide: Safety Analysis Report Update Program  

SciTech Connect (OSTI)

Martin Marietta Energy Systems, Inc. (MMES) is committed to performing and documenting safety analyses for facilities it manages for the Department of Energy (DOE). Safety analyses are performed to identify hazards and potential accidents; to analyze the adequacy of measures taken to eliminate, control, or mitigate hazards; and to evaluate potential accidents and determine associated risks. Safety Analysis Reports (SARs) are prepared to document the safety analysis to ensure facilities can be operated safely and in accordance with regulations. Many of the facilities requiring a SAR process fissionable material creating the potential for a nuclear criticality accident. MMES has long had a nuclear criticality safety program that provides the technical support to fissionable material operations to ensure the safe processing and storage of fissionable materials. The guiding philosophy of the program has always been the application of the double-contingency principle, which states: {open_quotes}process designs shall incorporate sufficient factors of safety to require at least two unlikely, independent, and concurrent changes in process conditions before a criticality accident is possible.{close_quotes} At Energy Systems analyses have generally been maintained to document that no single normal or abnormal operating conditions that could reasonably be expected to occur can cause a nuclear criticality accident. This application guide provides a summary description of the MMES Nuclear Criticality Safety Program and the MMES Criticality Accident Alarm System requirements for inclusion in facility SARs. The guide also suggests a way to incorporate the analyses conducted pursuant to the double-contingency principle into the SAR. The prime objective is to minimize duplicative effort between the NCSA process and the SAR process and yet adequately describe the methodology utilized to prevent a nuclear criticality accident.

Not Available

1994-02-01T23:59:59.000Z

493

Energy information sheets  

SciTech Connect (OSTI)

The National Energy Information Center (NEIC), as part of its mission, provides energy information and referral assistance to Federal, State, and local governments, the academic community, business and industrial organizations, and the general public. Written for the general public, the EIA publication Energy Information Sheets was developed to provide information on various aspects of fuel production, prices, consumption and capability. The information contained herein pertains to energy data as of December 1991. Additional information on related subject matter can be found in other EIA publications as referenced at the end of each sheet.

Not Available

1993-12-02T23:59:59.000Z

494

Teleportation of Accelerated Information  

E-Print Network [OSTI]

A theoretical quantum teleportation protocal is suggested to teleport accelerated and non-accelerated information over different classes of accelerated quantum channels. For the accelerated information, it is shown that the fidelity of the teleported state increases as the entanglement of the initial quantum channel increases. However as the difference between the accelerated channel and the accelerated information decreases the fidelity increases. The fidelity of the non accelerated information increases as the entanglement of the initial quantum channel increases, while the accelerations of the quantum channel has a little effect. The possibility of sending quantum information over accelerated quantum channels is much better than sending classical information.

N. Metwally

2012-06-17T23:59:59.000Z

495

Heat-rate improvements obtained by retubing condensers with new, enhanced tube types  

SciTech Connect (OSTI)

Significant fuel savings can be achieved at power plants by retubing the condensers with enhanced tubes. Because of the higher overall heat-transfer coefficient, the exhaust steam is condensed at a lower pressure and the plant efficiency is therefore increased or plant heat rate is reduced. Only the spirally indented type of enhanced tube is currently being used in the U.S. and most other countries; however, different types of enhanced tubes have been proposed for power-plant condensers, each with their own set of attributes. This paper determines what attributes and their magnitudes of enhanced tubes lead to the most energy savings as measured by reduction of the plant heat rate. The particular attributes considered are the inside and outside enhancement levels, the inside efficiency index (inside enhancement level divided by pressure-drop increase), and the enhanced-tube fouling-rate multiplier. Two particular condensers were selected because all necessary information were known from previous heat-rate studies such as the condenser geometry, the circulating-water pump and system information, and the low-pressure turbine characteristics. These are {open_quotes}real-world{close_quotes} condensers and therefore the finding will be representative for many other condenser-retubing applications. However, the authors strongly recommend that an economic evaluation be performed at each site to determine the energy savings and payback time. This generic investigation showed that the outside enhancement level is the most important attribute, and a value of about 1.5 can lead to heat-rate savings of about 20 to 40 Btu/kW-hr. Increasing the inside enhancement is less effective because of the increased pressure drop that leads to a reduction of the coolant flow rate and velocity.

Rabas, T.J. [Argonne National Lab., IL (United States); Taborek, J. [Consulting Services, Virginia Beach, VA (United States)

1995-01-01T23:59:59.000Z

496

Integrated Approach to Documenting Readiness for a Potential Criticality Incident  

SciTech Connect (OSTI)

There have been 60 highly publicized criticality accidents1 over the last 60 years and the nature of the hazard is unique. Recent studies2 discuss the benefits of knowing what to expect during and immediately following these events. Emergency planning and response standards2 provide an effective tool for establishing an adequate level of readiness to a criticality accident. While these planning requirements cover a broad spectrum of activities to establish readiness, a concise and routinely reviewed criticality accident scenario may be the most valuable tool in developing a cohesive understanding and response to these challenging events. Using a guideline3 for criticality safety evaluations the analytical work and emergency planning to mitigate a criticality accident at the Radiochemical Processing Laboratory at the Pacific Northwest National Laboratory, was developed. Using a single document the analysis that established the accident characteristics, response scenario based on emergency staffing and planning, and anticipated dose consequences were integrated. This single document approach provides a useful platform to integrate the initial planning and guide the review of proposed changes to emergency response plans.

Carlisle, Bruce S.; Prichard, Andrew W.; Jones, Robert A.

2013-11-11T23:59:59.000Z

497

Critical behaviour in the elastic response of hydrogels  

E-Print Network [OSTI]

Highly responsive, or 'smart' materials are abundant in Nature; individual cells, for instance, can adapt their mechanical properties to the local surroundings through small changes in their internal structure. An effective method to enhance the responsiveness of synthetic materials is to operate near a critical point, where small variations lead to large changes in material properties. Recent theories have suggested that fibre/polymer networks can show critical behaviour near and below the point of marginal connectivity that separates rigid and floppy states [1-4]. To date, however, experimental evidence for criticality in such networks has been lacking. Here, we demonstrate critical behaviour in the stress response of synthetic hydrogels at low concentrations of order 0.1% volume fraction. We show, using computer simulations, that the observed response to stress can be understood by considering the influence of a zero-temperature critical point, i.e. the Maxwell isostatic point [5], together with the intrinsically nonlinear stretch response of semi-flexible polymer strands in the gel.

M. Dennison; M. Jaspers; P. H. J. Kouwer; C. Storm; A. E. Rowan; F. C. MacKintosh

2014-07-01T23:59:59.000Z

498

ITL BULLETIN FOR MARCH 2013 NIST TO DEVELOP A CYBERSECURITY FRAMEWORK TO PROTECT CRITICAL INFRASTRUCTURE  

E-Print Network [OSTI]

ITL BULLETIN FOR MARCH 2013 NIST TO DEVELOP A CYBERSECURITY FRAMEWORK TO PROTECT CRITICAL, "Improving Critical Infrastructure Cybersecurity," the President has directed NIST to develop a voluntary framework for reducing cyber risks to our nation's critical infrastructure. The Cybersecurity Framework

499

Process and apparatus for obtaining samples of liquid and gas from soil  

DOE Patents [OSTI]

An apparatus and process for obtaining samples of liquid and gas from subsurface soil is provided having filter zone adjacent an external expander ring. The expander ring creates a void within the soil substrate which encourages the accumulation of soil-borne fluids. The fluids migrate along a pressure gradient through a plurality of filters before entering a first chamber. A one-way valve regulates the flow of fluid into a second chamber in further communication with a collection tube through which samples are collected at the surface. A second one-way valve having a reverse flow provides additional communication between the chambers for the pressurized cleaning and back-flushing of the apparatus. 8 figs.

Rossabi, J.; May, C.P.; Pemberton, B.E.; Shinn, J.; Sprague, K.

1999-03-30T23:59:59.000Z

500

Characterization of new corrosion resistant nickel-zinc-phosphorus alloys obtained by electrodeposition  

SciTech Connect (OSTI)

The authors discuss the electrodeposition of a family of NiZnP coatings studied at a rotating cylinder electrode by varying the temperature (45{sup 0}-80{sup 0}C) and the applied current density (0.03-0.95 A/cm/sup 2/). Two of the coatings were nickel-rich, two were zinc-rich, and a fifth coating had approximately equal amounts of Ni and Zn. The coatings were characterized using SEM/EDX and Auger depth profile techniques. A Ni-rich alloy with a supersaturated amount of zinc and the approximate composition 59Ni-39Zn-2P was obtained at all temperatures in the high speed electrodeposition current density range 0.6-1.0 A/cm/sup 2/. The supersaturated alloy could be deposited at current efficiencies higher than 80% at all temperatures. The corrosion rate of this coating was the lowest among the various NiZnP coatings.

Swathirajan, S.; Mikhail, Y.M. (Physical Chemistry Dept., General Motors Research Labs., Warren, MI (US))

1989-08-01T23:59:59.000Z