Sample records for qualitative result due

  1. Qualitative and analytical results of the bifurcation thresholds to halo orbits

    E-Print Network [OSTI]

    Sara Bucciarelli; Marta Ceccaroni; Alessandra Celletti; Giuseppe Pucacco

    2015-02-01T23:59:59.000Z

    We study the dynamics in the neighborhood of the collinear Lagrangian points in the spatial, circular, restricted three--body problem. We consider the case in which one of the primaries is a radiating body and the other is oblate (although the latter is a minor effect). Beside having an intrinsic mathematical interest, this model is particularly suited for the description of a mission of a spacecraft (e.g., a solar sail) to an asteroid. The aim of our study is to investigate the occurrence of bifurcations to halo orbits, which take place as the energy level is varied. The estimate of the bifurcation thresholds is performed by analytical and numerical methods: we find a remarkable agreement between the two approaches. As a side result, we also evaluate the influence of the different parameters, most notably the solar radiation pressure coefficient, on the dynamical behavior of the model. To perform the analytical and numerical computations, we start by implementing a center manifold reduction. Next, we estimate the bifurcation values using qualitative techniques (e.g. Poincar\\'e surfaces, frequency analysis, FLIs). Concerning the analytical approach, following \\cite{CPS} we implement a resonant normal form, we transform to suitable action-angle variables and we introduce a detuning parameter measuring the displacement from the synchronous resonance. The bifurcation thresholds are then determined as series expansions in the detuning. Three concrete examples are considered and we find in all cases a very good agreement between the analytical and numerical results.

  2. Requirements for Computer Based-Procedures for Nuclear Power Plant Field Operators Results from a Qualitative Study

    SciTech Connect (OSTI)

    Katya Le Blanc; Johanna Oxstrand

    2012-05-01T23:59:59.000Z

    Although computer-based procedures (CBPs) have been investigated as a way to enhance operator performance on procedural tasks in the nuclear industry for almost thirty years, they are not currently widely deployed at United States utilities. One of the barriers to the wide scale deployment of CBPs is the lack of operational experience with CBPs that could serve as a sound basis for justifying the use of CBPs for nuclear utilities. Utilities are hesitant to adopt CBPs because of concern over potential costs of implementation, and concern over regulatory approval. Regulators require a sound technical basis for the use of any procedure at the utilities; without operating experience to support the use CBPs, it is difficult to establish such a technical basis. In an effort to begin the process of developing a technical basis for CBPs, researchers at Idaho National Laboratory are partnering with industry to explore CBPs with the objective of defining requirements for CBPs and developing an industry-wide vision and path forward for the use of CBPs. This paper describes the results from a qualitative study aimed at defining requirements for CBPs to be used by field operators and maintenance technicians.

  3. Resultant magnetic fields due to both windings and heavy current leads in large power transformers

    SciTech Connect (OSTI)

    Tang Renyuan; Li Yan; Lin Feng; Tian Lijian [Shenyang Polytechnic Univ. (China)] [Shenyang Polytechnic Univ. (China)

    1996-05-01T23:59:59.000Z

    The eddy current field due to both windings and heavy current leads (HCL) in large power transformers is analyzed by using the improved T-{Omega} method, in which the T and {Omega} can be solved separately in different subregions. Thus, the storage capacity and CPU time can be saved to a great extent. In addition, the local overheating on the tank wall near the magnetic shield gap is calculated and analyzed, and the improving measures are proposed. On the basis of these work, a composite shield is analyzed and optimized. The numerical results show that the eddy current losses have been reduced and the local overheating has been removed by using this composite shield.

  4. Effect of voluntary counselling and testing and a negative HIV result on risk behaviour: a qualitative longitudinal study in a Zambian mining community 

    E-Print Network [OSTI]

    Sikasote, Janet Precious Banda

    2010-01-01T23:59:59.000Z

    sampled from VCT centres in two mining towns in Zambia. Interviews were digitally recorded, transcribed verbatim and analysed thematically with the aid of the qualitative data analysis software, Nvivo7. Cross-sectional analysis of all data sets...

  5. PHYSICS, QUALITATIVE BIBLIOGRAPHY

    E-Print Network [OSTI]

    de Kleer, Johan

    PHYSICS, QUALITATIVE C BIBLIOGRAPHY D. G. Bobrow and R J. Hayes, eds., Artif. Intell. 24," in Gentner and Stevens, 1983, pp. 155--190. J. de Kleer and J. S. Brown "A Qualitative Physics Based.J., 1983. P. Hayes, "The Naive Physics Manifesto," in Hobbs and Moore, 1985, pp 1--36 J R Hobbs and R C

  6. Qualitative interpretation of galaxy spectra

    E-Print Network [OSTI]

    Almeida, J Sanchez; Terlevich, E; Fernandes, R Cid; Morales-Luis, A B

    2012-01-01T23:59:59.000Z

    We describe a simple step-by-step guide to qualitative interpretation of galaxy spectra. Rather than an alternative to existing automated tools, it is put forward as an instrument for quick-look analysis, and for gaining physical insight when interpreting the outputs provided by automated tools. Though the recipe is of general application, it was developed for understanding the nature of the Automatic Spectroscopic K-means based (ASK) template spectra. They resulted from the classification of all the galaxy spectra in the Sloan Digital Sky Survey data release 7 (SDSS-DR7), thus being a comprehensive representation of the galaxy spectra in the local universe. Using the recipe, we give a description of the properties of the gas and the stars that characterize the ASK classes, from those corresponding to passively evolving galaxies, to HII galaxies undergoing a galaxy-wide starburst. The qualitative analysis is found to be in excellent agreement with quantitative analyses of the same spectra. A number of byprodu...

  7. QUALITATIVE INTERPRETATION OF GALAXY SPECTRA

    SciTech Connect (OSTI)

    Sanchez Almeida, J.; Morales-Luis, A. B. [Instituto de Astrofisica de Canarias, E-38205 La Laguna, Tenerife (Spain); Terlevich, R.; Terlevich, E. [Instituto Nacional de Astrofisica, Optica y Electronica, Tonantzintla, Puebla (Mexico); Cid Fernandes, R., E-mail: jos@iac.es, E-mail: abml@iac.es, E-mail: rjt@ast.cam.ac.uk, E-mail: eterlevi@inaoep.mx, E-mail: cid@astro.ufsc.br [Departamento de Fisica-CFM, Universidade Federal de Santa Catarina, P.O. Box 476, 88040-900 Florianopolis, SC (Brazil)

    2012-09-10T23:59:59.000Z

    We describe a simple step-by-step guide to qualitative interpretation of galaxy spectra. Rather than an alternative to existing automated tools, it is put forward as an instrument for quick-look analysis and for gaining physical insight when interpreting the outputs provided by automated tools. Though the recipe is for general application, it was developed for understanding the nature of the Automatic Spectroscopic K-means-based (ASK) template spectra. They resulted from the classification of all the galaxy spectra in the Sloan Digital Sky Survey data release 7, thus being a comprehensive representation of the galaxy spectra in the local universe. Using the recipe, we give a description of the properties of the gas and the stars that characterize the ASK classes, from those corresponding to passively evolving galaxies, to H II galaxies undergoing a galaxy-wide starburst. The qualitative analysis is found to be in excellent agreement with quantitative analyses of the same spectra. We compare the mean ages of the stellar populations with those inferred using the code STARLIGHT. We also examine the estimated gas-phase metallicity with the metallicities obtained using electron-temperature-based methods. A number of byproducts follow from the analysis. There is a tight correlation between the age of the stellar population and the metallicity of the gas, which is stronger than the correlations between galaxy mass and stellar age, and galaxy mass and gas metallicity. The galaxy spectra are known to follow a one-dimensional sequence, and we identify the luminosity-weighted mean stellar age as the affine parameter that describes the sequence. All ASK classes happen to have a significant fraction of old stars, although spectrum-wise they are outshined by the youngest populations. Old stars are metal-rich or metal-poor depending on whether they reside in passive galaxies or in star-forming galaxies.

  8. A Qualitive Modeling Approach for Fault Detection and Diagnosis on HVAC Systems

    E-Print Network [OSTI]

    Muller, T.; Rehault, N.; Rist, T.

    2013-01-01T23:59:59.000Z

    This paper describes the basics and first test results of a model based approach using qualitative modeling to perform Fault Detection and Diagnostics (FDD) on HVAC and R systems. A quantized system describing the qualitative behavior of a...

  9. ARTIFICIAL INTELLIGENCE A Qualitative Physics

    E-Print Network [OSTI]

    de Kleer, Johan

    ARTIFICIAL INTELLIGENCE A Qualitative Physics Confluences Johan De Kleer and John Seely Brown Xerox physics are (1) to be far simpler than the classical physics and yet retain all the important distinctions quantities and differential equations, (2) to produce causal accounts of physical mechanisms that are easy

  10. Quantifying precipitation suppression due to air Pollution

    E-Print Network [OSTI]

    Li, Zhanqing

    Quantifying precipitation suppression due to air Pollution First author: Amir Givati The Hebrew January 2004 #12;ABSTRACT: Urban and industrial air pollution has been shown qualitatively to suppress of the ratio of hill/coast precipitation during the 20th century in polluted areas in line with the increasing

  11. Kenneth D. Forbus Qualitative Reasoning Group

    E-Print Network [OSTI]

    Forbus, Kenneth D.

    Northwestern University 1890 Maple Avenue, Evanston, IL, 60201 Abstract Qualitative reasoners have been use of qualitative reasoning by engineers, scientists, and plain folks suggests that tractable: By tightly integrating numerical and qualitative models, behavior can be ex- plained as well as predicted

  12. BLIND SPOTS OF QUALITATIVE SIMULATORS Nuri Tasdemir

    E-Print Network [OSTI]

    BLIND SPOTS OF QUALITATIVE SIMULATORS by Nuri Ta¸sdemir BS, in Electrical and Electronics in Computer Engineering Bogazi¸ci University 2007 #12;ii BLIND SPOTS OF QUALITATIVE SIMULATORS APPROVED BY: Prof. A.C. Cem Say . . . . . . . . . . . . . . . . . . . (Thesis Supervisor) Prof. H. Levent Akin

  13. Effect of the magnetic lenses on the electron current due to near wall conductivity in a Hall thruster

    SciTech Connect (OSTI)

    Wu Zhiwen; Liu Xiangyang; Wang Ningfei [School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081 (China); Yu Daren [Harbin Plasma Propulsion Lab, Mail Box 458, Harbin Institute of Technology, Harbin 150001 (China)

    2010-07-15T23:59:59.000Z

    The effect of magnetic lens on the electron current due to near wall conductivity (NWC) in a Hall thruster is studied. A Monte Carlo model is employed to simulate the effect of the large magnetic field incidence angle on the electron current. The simulation results show that the electron current due to NWC decreases in the case of large incidence. The simulation qualitatively agrees with the related experimental result. And the simulation also demonstrates that choosing the curvature angle of the magnetic field is also a key factor to design a Hall thruster with high operation performance.

  14. Developer Dashboards: The Need For Qualitative Analytics

    E-Print Network [OSTI]

    Godfrey, Michael W.

    Developer Dashboards: The Need For Qualitative Analytics Olga Baysal, Reid Holmes, and Michael W-to-day development tasks. I. SOFTWARE ANALYTICS IN PRACTICE Many organizations have adopted data-driven decision

  15. assaying qualitative: Topics by E-print Network

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

    Parameter Estimation Using Qualitative Models: The Qualitative Kalman Filter Stev real data from a mo- bile robot application which utilises sonar and laser time-of- ight and...

  16. A qualitative method proposal to improve environmental impact assessment

    SciTech Connect (OSTI)

    Toro, Javier, E-mail: jjtoroca@unal.edu.co [Institute of Environmental Studies, National University of Colombia at Bogotá (Colombia)] [Institute of Environmental Studies, National University of Colombia at Bogotá (Colombia); Requena, Ignacio, E-mail: requena@decsai.ugr.es [Department of Computer Science and Artificial Intelligence, University of Granada (Spain)] [Department of Computer Science and Artificial Intelligence, University of Granada (Spain); Duarte, Oscar, E-mail: ogduartev@unal.edu.co [National University of Colombia at Bogotá, Department of Electrical Engineering and Electronics (Colombia)] [National University of Colombia at Bogotá, Department of Electrical Engineering and Electronics (Colombia); Zamorano, Montserrat, E-mail: zamorano@ugr.es [Department of Civil Engineering, University of Granada (Spain)] [Department of Civil Engineering, University of Granada (Spain)

    2013-11-15T23:59:59.000Z

    In environmental impact assessment, qualitative methods are used because they are versatile and easy to apply. This methodology is based on the evaluation of the strength of the impact by grading a series of qualitative attributes that can be manipulated by the evaluator. The results thus obtained are not objective, and all too often impacts are eliminated that should be mitigated with corrective measures. However, qualitative methodology can be improved if the calculation of Impact Importance is based on the characteristics of environmental factors and project activities instead on indicators assessed by evaluators. In this sense, this paper proposes the inclusion of the vulnerability of environmental factors and the potential environmental impact of project activities. For this purpose, the study described in this paper defined Total Impact Importance and specified a quantification procedure. The results obtained in the case study of oil drilling in Colombia reflect greater objectivity in the evaluation of impacts as well as a positive correlation between impact values, the environmental characteristics at and near the project location, and the technical characteristics of project activities. -- Highlights: • Concept of vulnerability has been used to calculate the importance impact assessment. • This paper defined Total Impact Importance and specified a quantification procedure. • The method includes the characteristics of environmental and project activities. • The application has shown greater objectivity in the evaluation of impacts. • Better correlation between impact values, environment and the project has been shown.

  17. Bias in Qualitative Measures of Concordance for Rodent Carcinogenicity Tests

    E-Print Network [OSTI]

    Tony H. Lin

    2011-01-01T23:59:59.000Z

    qualitative and quantitative factors. Risk Analysis 12 579{and quantitative cancer risk assessment. Risk Analysis 14

  18. Qualitative Heterogeneous Control of Higher Order Systems ?

    E-Print Network [OSTI]

    Kuipers, Benjamin

    framework, a methodology for the design of a controlled hybrid system based on attractors and transitions between them. This framework designs a robust controller that can accommodate bounded amounts techniques. The local models used in the design process are qualitative, allowing the use of partial

  19. Qualitative Heterogeneous Control of Higher Order Systems

    E-Print Network [OSTI]

    Kuipers, Benjamin

    framework, a methodology for the design of a controlled hybrid system based on attractors and transitions between them. This framework designs a robust controller that can accommodate bounded amounts techniques. The local models used in the design process are qualitative, allowing the use of partial

  20. Page 1 of 114 Qualitative Symbology -Gregory Bryant Johnson 1

    E-Print Network [OSTI]

    Klippel, Alexander

    Page 1 of 114 Qualitative Symbology - Gregory Bryant Johnson 1 Qualitative Symbology: An Evaluation of the Pictorial Signs of the National Park Service as Cartographic Symbols By Gregory Bryant Johnson Thesis Symbology - Gregory Bryant Johnson 2 QUALITATIVE SYMBOLOGY: AN EVALUATION OF THE PICTORIAL SIGNS

  1. The naturalness of qualitative reasoning suggests that qualitative representations might be an

    E-Print Network [OSTI]

    Forbus, Kenneth D.

    be an important component of the semantics of natural language. Prior work ( Kuehne 2004) showed that frame. Kuehne's approach relied on the parser recognizing specific syntactic constructions, which has limited in natural language semantics. Kuehne (2004) showed that the constructs of qualitative process theory (Forbus

  2. Strong Equivalence of Qualitative Optimization Problems

    E-Print Network [OSTI]

    Faber, Wolfgang; Woltran, Stefan

    2011-01-01T23:59:59.000Z

    We introduce the framework of qualitative optimization problems (or, simply, optimization problems) to represent preference theories. The formalism uses separate modules to describe the space of outcomes to be compared (the generator) and the preferences on outcomes (the selector). We consider two types of optimization problems. They differ in the way the generator, which we model by a propositional theory, is interpreted: by the standard propositional logic semantics, and by the equilibrium-model (answer-set) semantics. Under the latter interpretation of generators, optimization problems directly generalize answer-set optimization programs proposed previously. We study strong equivalence of optimization problems, which guarantees their interchangeability within any larger context. We characterize several versions of strong equivalence obtained by restricting the class of optimization problems that can be used as extensions and establish the complexity of associated reasoning tasks. Understanding strong equiv...

  3. Qualitative human reliability analysis for spent fuel handling

    SciTech Connect (OSTI)

    Brewer, J. D. [Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87185-0748 (United States); Amico, P. [Science Applications International Corporation (United States); Cooper, S. E. [United Stated Nuclear Regulatory Commission (United States)

    2006-07-01T23:59:59.000Z

    Human reliability analysis (HRA) methods have been developed primarily to provide information for use in probabilistic risk assessments (PRAs) that analyze nuclear power plant (NPP) operations. Given the original emphasis of these methods, it is understandable that many HRAs have not ventured far from NPP control room applications. Despite this historical focus on the control room, there has been growing interest and discussion regarding the application of HRA methods to other NPP activities such as spent fuel handling (SFH) or operations in different types of facilities. One recently developed HRA method, 'A Technique for Human Event Analysis' (ATHEANA) has been proposed as a promising candidate for diverse applications due to its particular approach for systematically uncovering the dynamic, contextual conditions influencing human performance. This paper describes one successful test of this proposition by presenting portions of a recently completed project in which a scoping study was performed to accomplish the following goals: (1) investigate what should be included in a qualitative HRA for spent fuel and cask handling operations; and (2) demonstrate that the ATHEANA HRA technique can be usefully applied to these operations. The preliminary, scoping qualitative HRA examined, in a generic manner, how human performance of SFH and dry cask storage operations (DCSOs) can plausibly lead to radiological consequences that impact the public and the environment. The study involved the performance of typical, qualitative HRA tasks such as collecting relevant information and the preliminary identification of human failure events or unsafe actions, relevant influences (e.g., performance shaping factors, other contextual factors), event scenario development and categorization of human failure event (HFE) scenario groupings. Information from relevant literature sources was augmented with subject matter expert interviews and analysis of an edited video of selected operations. Elements of NUREG-1792, Good Practices for Implementing Human Reliability Analyses (HRA) and NUREG-1624, Rev. 1, Technical Basis and Implementation Guidelines for A Technique for Human Event Analysis (ATHEANA) formed critical parts of the technical basis for the preliminary analysis. Mis-loading of spent fuel into a cask and dropping of a loaded cask were the two human failure event groupings of primary interest, although all human performance aspects of DCSOs were considered to some extent. Of important note is that HRA is typically performed in the context of a plant-specific PRA study. This analysis was performed without the benefit of the context provided by a larger PRA study, nor was it plant specific, and so it investigated only generic HRA issues relevant to SFH. However, the improved understanding of human performance issues provided by the study will likely enhance the ability to carry out a detailed qualitative HRA for a specific NPP at some point in the future. Furthermore, support was obtained regarding the potential for applying ATHEANA beyond NPP settings. This paper provides a description of the process followed during the analysis, a description of the HFE scenario groupings, discussion regarding general human performance vulnerabilities, and a detailed examination of one HFE scenario developed in the study. (authors)

  4. Qualitative Strategy for Inbound Call Center Outsourcing

    E-Print Network [OSTI]

    Sankaranaraynan, Meenakshi

    2010-05-14T23:59:59.000Z

    —such as language barriers, communication, punctuality, traditions, customs, and norms of behavior. A postmortem of many failed projects points out to relational factors such as communication challenges and misunderstandings due to cultural differences... offshoring, due to their infinite capacity to absorb OECD technologies and management strategies, to improve on them, and ultimately to compete head-to-head with the OECD (Trefler, et al., 2005). However, this argument is flawed. On the contrary, because...

  5. Revision of Qualitative Multi-Attribute Decision Models Martin Znidarsic*

    E-Print Network [OSTI]

    Bohanec, Marko

    881 Revision of Qualitative Multi-Attribute Decision Models Martin Znidarsic* Marko Bohanec** Jozef Stefan Institute Department of Intelligent Systems Ljubljana, Slovenia *Email: martin.znidarsic

  6. adjuvant induces qualitative: Topics by E-print Network

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

    In this work, two possible enrichments (quantitative andor qualitative) of linguistic labels are considered and operators (addition, multiplication, division, etc) for dealing...

  7. australia qualitative analysis: Topics by E-print Network

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

    Systems Neal Snooke and Jonathan Bell 1 Abstract. Failure Modes and Effects Analysis (FMEA- ware, and qualitative fault propagation, enables automated Software FMEA (SFMEA). The...

  8. Combining Functional Modelling and Qualitative Fault Propagation to Enable Failure Mode Analysis of

    E-Print Network [OSTI]

    Snooke, Neal

    of Software Systems Neal Snooke and Jonathan Bell 1 Abstract. Failure Modes and Effects Analysis (FMEA- ware, and qualitative fault propagation, enables automated Software FMEA (SFMEA). The result is a broad in extending FMEA into the soft- ware itself [3, 14, 6, 8] however there has been little progress in developing

  9. A Qualitative Survey of Modern Software Transactional Memory Systems

    E-Print Network [OSTI]

    Scott, Michael L.

    A Qualitative Survey of Modern Software Transactional Memory Systems Virendra J. Marathe present a qualitative survey of modern STM systems that support dynamic transactions. More concretely, we management versus helping. This work was supported in part by NSF grants numbers EIA-0080124, CCR-9988361

  10. Communicating Qualitative Risk to a Rural Audience

    SciTech Connect (OSTI)

    Vandergraaf, T.T. [Providence College, Otterburne, MB, R0A (Canada)

    2008-07-01T23:59:59.000Z

    Although many risk assessment involve complex mathematical models and a thorough understanding, communicating the risk to the general public can present a considerable challenge. Comprehending a 'one-in-a-million' risk some 10 000 years in the future can be a challenge to the average citizen who is surrounded by more imminent dangers and who has, by virtue of their familiarity, become immune to them. A number of years ago, the then Japan Atomic Energy Institute (JAERI) signed a multi-year cooperative agreement with Atomic Energy of Canada, Ltd (AECL) that included a number of self-contained radioisotope diffusion and migration experiments to be performed under in situ geochemical conditions in a specially designed radiochemistry laboratory at a depth of 240 metres in AECL's Underground Research Laboratory (URL) near Lac du Bonnet, Manitoba, Canada. This underground facility has been excavated in a previously undisturbed granite pluton in the Canadian Shield to study various aspects of high-level nuclear waste management. The region has been the home to AECL's Whiteshell Laboratories since the early 1960's and is surrounded by lakes, forests, some agriculture and mining activity. The economy of town, Lac du Bonnet is based on tourism, forestry, mining and agriculture. The relationship between Lac du Bonnet and AECL has generally been good although there have been attempts by a few local citizens, aided by antinuclear activists from Winnipeg, Manitoba's capital, to curtail the operation of the URL. Although the use of radioisotopes was approved by the then-Atomic Energy Control Board, the Canadian regulatory body, maintaining good working relations with the elected officials of the neighbouring communities was essential to the proposed radioisotope migration experiments. One reason for this was that minute quantities of radioisotope solutions needed to be transported over a distance of {approx}25 km between the URL and the Whiteshell Laboratories over public roads. As part of the public affairs program, the author, before his retirement from AECL, presented a comparison between the amounts of radioisotopes used in the migration experiments and those present in commonly used consumer products. This comparison proved to be adequate to gain the trust and support of the neighbouring communities. This trust was maintained by a rigorous communication program between the project manager and representatives of the local communities, environmental and law enforcement agencies. In summary: The need to present an experimental program to non-scientists presented a golden opportunity to relate the qualitative risk of using radioisotopes in a non-traditional environment to that associated with widely used consumer items and medical therapeutic and diagnostic materials. Although the amounts of radioisotopes used in these experiments are orders of magnitude lower than those in the disposal of nuclear wastes, the approach presented here may have merit in bridging the gap between the scientific community and the general public. The success of the approach used became clear when, towards the end of the experimental program, some of the elected officials expressed satisfaction with the extension of the program for new, a five-year, period. (authors)

  11. Qualitative Reasoning Feeding Back into Quantitative Model-Based Tracking

    E-Print Network [OSTI]

    Nebel, Bernhard

    Qualitative Reasoning Feeding Back into Quantitative Model-Based Tracking Christian K¨ohler, 1- bilize basic signal processing and pattern recognition processes like the reliable extraction of some

  12. Qualitative Reasoning Feeding Back into Quantitative ModelBased Tracking

    E-Print Network [OSTI]

    Nebel, Bernhard

    Qualitative Reasoning Feeding Back into Quantitative Model­Based Tracking Christian KË? ohler, 1­ bilize basic signal processing and pattern recognition processes like the reliable extraction of some

  13. PRESSIONS ET BUDGET: UNE ETUDE QUALITATIVE DANS LE SECTEUR

    E-Print Network [OSTI]

    Boyer, Edmond

    PRESSIONS ET BUDGET: UNE ETUDE QUALITATIVE DANS LE SECTEUR HOSPITALIER Résumé Le courant Reliance secteur hospitalier public. Mots clés : pression budgétaire, manipulation de données, conflit de rôle 31 praticiens hospitaliers dans deux Centres Hospitaliers Universitaires. Ce choix est justifié par

  14. Arguing for Decisions: A Qualitative Model of Decision Making

    E-Print Network [OSTI]

    Bonet, Blai

    Universidad Simon Bol var Aptdo. 89000, Caracas 1080-A Venezuela Hector Ge ner Dpto. de Computacion Universidad Simon Bol var Aptdo. 89000, Caracas 1080-A Venezuela Abstract We develop a qualitative model

  15. Growth machine theory: a qualitative analysis

    E-Print Network [OSTI]

    Smith, Gavin Paul

    1993-01-01T23:59:59.000Z

    of land inherent in growth machine theory, does not necessarily result in a dialectic, win-lose situation. Furthermore, it is argued that the growth coalition may not always ado t a unidimensional roach to development where further growth...

  16. Announcement due to MSVE Department

    E-Print Network [OSTI]

    Announcement due to MSVE Department 2 weeks prior to defense Student revises Thesis GPD revises Thesis and returns to student Student revises Thesis Professional editor reviews Thesis original signatures on five copies Student revises Thesis Student takes final five copies to Registrar

  17. In Search of a Taxonomy for Classifying Qualitative Spreadsheet Errors

    E-Print Network [OSTI]

    Przasnyski, Zbigniew; Seal, Kala Chand

    2011-01-01T23:59:59.000Z

    Most organizations use large and complex spreadsheets that are embedded in their mission-critical processes and are used for decision-making purposes. Identification of the various types of errors that can be present in these spreadsheets is, therefore, an important control that organizations can use to govern their spreadsheets. In this paper, we propose a taxonomy for categorizing qualitative errors in spreadsheet models that offers a framework for evaluating the readiness of a spreadsheet model before it is released for use by others in the organization. The classification was developed based on types of qualitative errors identified in the literature and errors committed by end-users in developing a spreadsheet model for Panko's (1996) "Wall problem". Closer inspection of the errors reveals four logical groupings of the errors creating four categories of qualitative errors. The usability and limitations of the proposed taxonomy and areas for future extension are discussed.

  18. Effort minimization in UI development by reusing existing DGML based UI design for qualitative software development

    E-Print Network [OSTI]

    Suri, P K

    2010-01-01T23:59:59.000Z

    This paper addresses the methodology for achieving the user interface design reusability of a qualitative software system and effort minimization by applying the inference on the stored design documents. The pictorial design documents are stored in a special format in the form of keyword text [DGML tag based design]. The design document storage mechanism will expose the keywords per design stored. This methodology is having an inference engine. Inference mechanism search for the requirements and find the match for them in the available design repository. A match found will success in reusing it after checking the quality parameters of the found design module in the result set. DGML notations produces qualitative designs which helps in minimizing the efforts of software development life cycle.

  19. Politecnico di Milano Area Gestione Infrastrutture e Servizi Servizio Qualit di Ateneo

    E-Print Network [OSTI]

    Congresso Metrologia & Qualità 2009 2009 Exploring the Meaning of Quality for a Higher Education Institution Metrologia & Qualità 2005 2005 Il controllo dei processi di misura ­ Applicazione in ambito universitario Metrologia & Qualità 2005 2005 Area Gestione Infrastrutture e Servizi Servizio Qualità di Ateneo #12

  20. A qualitative model for temporal reasoning with incomplete information

    SciTech Connect (OSTI)

    Geffner, H. [Universidad Simon Bolivar, Caracas (Venezuela)

    1996-12-31T23:59:59.000Z

    We develop a qualitative framework for temporal reasoning with incomplete information that features a modeling language based on rules and a semantics based on infinitesimal probabilities. The framework relates logical and probabilistical models, and accommodates in a natural way features that have been found problematic in other models like non-determinism, action qualifications, parallel actions, and abduction to actions and fluents.

  1. The Qualitative Trajectory Calculus on Networks Peter Bogaert1

    E-Print Network [OSTI]

    Leeds, University of

    The Qualitative Trajectory Calculus on Networks Peter Bogaert1 , Nico Van de Weghe1 , Anthony G's), there #12;2 Peter Bogaert, Nico Van de Weghe, Anthony G. Cohn, Frank Witlox, Philippe De Maeyer are, 9000 Gent, Belgium {Peter.Bogaert, Nico.VandeWeghe, Frank.Witlox, Philippe.DeMaeyer}@UGent.be 2

  2. A Qualitative Simulation Approach for Fuzzy Dynamical Models

    E-Print Network [OSTI]

    Bontempi, Gianluca

    .g., a nuclear power plant in unexpected emergency situations) or because if does not yet exist (eA Qualitative Simulation Approach for Fuzzy Dynamical Models ANDREA BONARINI and GIANLUCA BONTEMPI Politecnico di Milano This article deal with simulation of approximate models of dynamic systems. We propose

  3. dam logic: qualitative reasoning about benthic macroinvertebrate responses

    E-Print Network [OSTI]

    Tullos, Desiree

    dam logic: qualitative reasoning about benthic macroinvertebrate responses to dam removal desiree reliability of biotic and abiotic indicators (e.g. responsiveness to dam removal, detectability, feasibility relationships "there appears to be a wide range of ecological responses to dam removal. It is therefore

  4. Challenges for Qualitative Electrical Reasoning in Automotive Circuit Simulation

    E-Print Network [OSTI]

    Snooke, Neal

    Challenges for Qualitative Electrical Reasoning in Automotive Circuit Simulation Neal Snooke it to be used for applications on realistic automotive circuits. The type of circuits for which it is most automotive circuits with more complex overall behaviour can be approximated using this type of modelling

  5. Qualitative Reliability Issues for In-Vessel Solid and Liquid Wall Fusion Designs

    SciTech Connect (OSTI)

    Cadwallader, Lee Charles; Nygren, R. E.

    2001-10-01T23:59:59.000Z

    This paper presents the results of a study of the qualitative aspects of plasma facing component (PFC) reliability for actively cooled solid wall and liquid wall concepts for magnetic fusion reactor vessels. These two designs have been analyzed for component failure modes. The most important results of that study are given here. A brief discussion of reliability growth in design is included to illustrate how solid wall designs have begun as workable designs and have evolved over time to become more optimized designs with better longevity. The increase in tolerable heat fluxes shows the improvement. Liquid walls could also have reliability growth if the designs had similar development efforts.

  6. Quantitative and qualitative productivity in nominal brainstorming groups

    E-Print Network [OSTI]

    Selivanoff, Sophia G

    1989-01-01T23:59:59.000Z

    . A. , Lorna Linda University Chair of Committee: Dr. Charles Samuelson This research investigated the effects of evaluation apprehension and social comparison feedback on the quantitative and qualitative productivity of brainstorming. Both... with these characteristics. However, this study goes one step further and uses truly nominal groups in order to isolate the effects of evaluation apprehension and social comparison feedback. One hundred three undergraduate students were used to investigate the following...

  7. Modification of gravity due to torsion

    SciTech Connect (OSTI)

    Nair, V. P. [Physics Department, City College of the CUNY, New York, NY 10031 (United States); Nikiforova, V. [Physics Department, Mascow State University Moscow (Russian Federation); Randjbar-Daemi, S. [The Abdus Salam International Centre for Theoretical Physics, Trieste (Italy); Rubakov, V. [Institute for Nuclear Research of the Russian Academy of Sciences, Moscow (Russian Federation)

    2010-01-01T23:59:59.000Z

    Modifications of general relativity have been considered as one of the possible ways of addressing some of the outstanding problems related to the large scale gravitational physics. In this contribution we review some of the recent results which are due to the inclusion of dynamical torsion. More specifically we shall discuss the propagation of massive spin-2 particles in flat and curved space times. We shall show that, contrary to what is generally believed, spinning matter is not the sole source of torsion field. A symmetric energy momentum tensor can also couple to torsion degrees of freedom. The massive and massless spin-2 particles mix giving rise to an infrared modification of gravity.

  8. Extreme events due to localisation of energy

    E-Print Network [OSTI]

    Colm Mulhern; Stephan Bialonski; Holger Kantz

    2015-01-09T23:59:59.000Z

    We study a one-dimensional chain of harmonically coupled units in an asymmetric anharmonic soft potential. Due to nonlinear localisation of energy, this system exhibits extreme events in the sense that individual elements of the chain show very large excitations. A detailed statistical analysis of extremes in this system reveals some unexpected properties, e.g., a pronounced pattern in the inter event interval statistics. We relate these statistical properties to underlying system dynamics, and notice that often when extreme events occur the system dynamics adopts (at least locally) an oscillatory behaviour, resulting in, for example, a quick succession of such events. The model therefore might serve as a paradigmatic model for the study of the interplay of nonlinearity, energy transport, and extreme events.

  9. System diagnostics using qualitative analysis and component functional classification

    DOE Patents [OSTI]

    Reifman, Jaques (Lisle, IL); Wei, Thomas Y. C. (Downers Grove, IL)

    1993-01-01T23:59:59.000Z

    A method for detecting and identifying faulty component candidates during off-normal operations of nuclear power plants involves the qualitative analysis of macroscopic imbalances in the conservation equations of mass, energy and momentum in thermal-hydraulic control volumes associated with one or more plant components and the functional classification of components. The qualitative analysis of mass and energy is performed through the associated equations of state, while imbalances in momentum are obtained by tracking mass flow rates which are incorporated into a first knowledge base. The plant components are functionally classified, according to their type, as sources or sinks of mass, energy and momentum, depending upon which of the three balance equations is most strongly affected by a faulty component which is incorporated into a second knowledge base. Information describing the connections among the components of the system forms a third knowledge base. The method is particularly adapted for use in a diagnostic expert system to detect and identify faulty component candidates in the presence of component failures and is not limited to use in a nuclear power plant, but may be used with virtually any type of thermal-hydraulic operating system.

  10. System diagnostics using qualitative analysis and component functional classification

    DOE Patents [OSTI]

    Reifman, J.; Wei, T.Y.C.

    1993-11-23T23:59:59.000Z

    A method for detecting and identifying faulty component candidates during off-normal operations of nuclear power plants involves the qualitative analysis of macroscopic imbalances in the conservation equations of mass, energy and momentum in thermal-hydraulic control volumes associated with one or more plant components and the functional classification of components. The qualitative analysis of mass and energy is performed through the associated equations of state, while imbalances in momentum are obtained by tracking mass flow rates which are incorporated into a first knowledge base. The plant components are functionally classified, according to their type, as sources or sinks of mass, energy and momentum, depending upon which of the three balance equations is most strongly affected by a faulty component which is incorporated into a second knowledge base. Information describing the connections among the components of the system forms a third knowledge base. The method is particularly adapted for use in a diagnostic expert system to detect and identify faulty component candidates in the presence of component failures and is not limited to use in a nuclear power plant, but may be used with virtually any type of thermal-hydraulic operating system. 5 figures.

  11. Qualitative Risk Assessment For An LNG Refueling Station And Review Of Relevant Safety Issues, Revision 2

    SciTech Connect (OSTI)

    Siu, Nathan; Herring, J Stephen; Cadwallader, Lee; Reece, Wendy; Byers, James

    2014-06-25T23:59:59.000Z

    This report is a qualitative assessment of the public and worker risk involved with the operation of liquefied natural gas vehicle refueling facility.

  12. A Qualitative Interpretation of the Second Solar Spectrum of Ce ll

    E-Print Network [OSTI]

    R. Manso Sainz; E. Landi Degl'Innocenti; J. Trujillo Bueno

    2005-10-31T23:59:59.000Z

    This is a theoretical investigation on the formation of the linearly polarized line spectrum of ionized cerium in the sun. We calculate the scattering line polarization pattern emergent from a plane-parallel layer of Ce {\\sc ii} atoms illuminated from below by the photospheric radiation field, taking into account the differential pumping induced in the various magnetic sublevels by the anisotropic radiation field. We find that the line polarization pattern calculated with this simple model is in good qualitative agreement with reported observations. Interestingly, the agreement improves when some amount of atomic level depolarization is considered. We find that the best fit to the observations corresponds to the situation where the ground and metastable levels are depolarized to about one fifth of the corresponding value obtained in the absence of any depolarizing mechanism. One possibility to have this situation is that the depolarizing rate value of elastic collisions is exactly $D=10^6{\\rm s}^{-1}$, which is rather unlikely. Therefore, we interpret that fact as} due to the presence of a turbulent magnetic field in the limit of saturated Hanle effect for the lower-levels. For this turbulent magnetic field we obtain a lower limit of 0.8 gauss and an upper limit of 200-300 gauss.

  13. A Qualitative Assessment of Thorium-Based Fuels in Supercritical Pressure Water Cooled Reactors

    SciTech Connect (OSTI)

    Weaver, Kevan Dean; Mac Donald, Philip Elsworth

    2002-10-01T23:59:59.000Z

    The requirements for the next generation of reactors include better economics and safety, waste minimization (particularly of the long-lived isotopes), and better proliferation resistance (both intrinsic and extrinsic). A supercritical pressure water cooled reactor has been chosen as one of the lead contenders as a Generation IV reactor due to the high thermal efficiency and compact/simplified plant design. In addition, interest in the use of thorium-based fuels for Generation IV reactors has increased based on the abundance of thorium, and the minimization of transuranics in a neutron flux; as plutonium (and thus the minor actinides) is not a by-product in the thorium chain. In order to better understand the possibility of the combination of these concepts to meet the Generation IV goals, the qualitative burnup potential and discharge isotopics of thorium and uranium fuel were studied using pin cell analyses in a supercritical pressure water cooled reactor environment. Each of these fertile materials were used in both nitride and metallic form, with light water reactor grade plutonium and minor actinides added. While the uranium-based fuels achieved burnups that were 1.3 to 2.7 times greater than their thorium-based counterparts, the thorium-based fuels destroyed 2 to 7 times more of the plutonium and minor actinides. The fission-to-capture ratio is much higher in this reactor as compared to PWR’s and BWR’s due to the harder neutron spectrum, thus allowing more efficient destruction of the transuranic elements. However, while the uranium-based fuels do achieve a net depletion of plutonium and minor actinides, the breeding of these isotopes limits this depletion; especially as compared to the thorium-based fuels.

  14. Assessing Rural Transformations: Piloting a Qualitative Impact Protocol in Malawi and Ethiopia

    E-Print Network [OSTI]

    Burton, Geoffrey R.

    Assessing Rural Transformations: Piloting a Qualitative Impact Protocol in Malawi and Ethiopia a Qualitative Impact Protocol in Malawi and Ethiopia James Copestake and Fiona Remnant Abstract This paper impact evaluation of NGO sponsored rural development projects in Malawi and Ethiopia. Two of the projects

  15. Learning Qualitative Relations in Physics with Law Encoding Diagrams Peter C-H. Cheng

    E-Print Network [OSTI]

    Cheng, Peter

    Learning Qualitative Relations in Physics with Law Encoding Diagrams Peter C-H. Cheng ESRC Centre that evaluates the effectiveness of Law Encoding Diagrams (LEDs) for learning qualitative relations in the domain of elastic colli- sions in physics. A LED is a representation that captures the laws or important relations

  16. Quantitative and qualitative measures of decomposition: Is there a link?

    SciTech Connect (OSTI)

    Eaton, Robert, J.; Sanchez, Felipe, G.

    2009-03-01T23:59:59.000Z

    Decomposition rates of loblolly pine coarse woody debris (CWD) were determined by mass loss and wood density changes for trees that differed in source of mortality (natural, girdle-poison, and felling). Specifically, three treatments were examined: (1) control (CON): natural mortality; (2) CD: 5-fold increase in CWD compared with the CON; and (3) CS: 12-fold increase in snags compared with the CON. The additional CWD in the CD treatment plots and the additional snags in the CS plots were achieved by felling (for the CD plots) or girdling followed by herbicide injection (for the CS plots) select trees in these plots. Consequently,mortality on the CD plots is due to natural causes and felling. Likewise, mortality on the CS plots is due to natural causes and girdle-poison. In each treatment plot, mortality due to natural causes was inventoried since 1997, whereas mortality due to girdle-poison and felling were inventoried since 2001. No significant difference was detected between the rates of decomposition for the CWD on these treatment plots, indicating that source of the tree mortality did not influence rates of decomposition once the tree fell. These experimental measures of decomposition were compared with two decay classification systems (three- and five-unit classifications) to determine linkages. Changes in wood density did not correlate to any decay classification, whereas mass loss had a weak correlation with decay class. However, the large degree of variation limits the utility of decay classification systems in estimating mass loss.

  17. Is Hubble's Expansion due to Dark Energy

    E-Print Network [OSTI]

    R. C. Gupta; Anirudh Pradhan

    2010-10-19T23:59:59.000Z

    {\\it The universe is expanding} is known (through Galaxy observations) since 1929 through Hubble's discovery ($V = H D$). Recently in 1999, it is found (through Supernovae observations) that the universe is not simply expanding but is accelerating too. We, however, hardly know only $4\\%$ of the universe. The Wilkinson Microwave Anisotropy Probe (WMAP) satellite observational data suggest $73\\%$ content of the universe in the form of dark-energy, $23\\%$ in the form of non-baryonic dark-matter and the rest $4\\%$ in the form of the usual baryonic matter. The acceleration of the universe is ascribed to this dark-energy with bizarre properties (repulsive-gravity). The question is that whether Hubble's expansion is just due to the shock of big-bang & inflation or it is due to the repulsive-gravity of dark-energy? Now, it is believed to be due to dark-energy, say, by re-introducing the once-discarded cosmological-constant $\\Lambda$. In the present paper, it is shown that `the formula for acceleration due to dark-energy' is (almost) exactly of same-form as `the acceleration formula from the Hubble's law'. Hence, it is concluded that: yes, `indeed it is the dark-energy responsible for the Hubble's expansion too, in-addition to the current on-going acceleration of the universe'.

  18. Listening to Our Students: Enhancing Library Instruction Through a Qualitative Assessment of Student Feedback

    E-Print Network [OSTI]

    Goodwin, Susan; Budzise-Weaver, Tina

    Listening to Our Students: Enhancing Library Instruction Through a Qualitative Assessment of Student Feedback Susan P. Goodwin1 and Tina Budzise-Weaver2 1Associate Professor & Head of Public and Learning Services, Texas A&M University Libraries...

  19. The Danube Delta Biosphere Reserve: a Case Study for Qualitative Modeling of Sustainable Development

    E-Print Network [OSTI]

    Bailey-Kellogg, Chris

    We present progress towards developing a qualitative reasoning model of sustainable development's Strategy for Sustainable Development (SSD) that call for increasing participation in the process of making decisions that affect sustainable development (SD), stakeholders, decision makers, and citizens must gain

  20. Validating the use of qualitative ratings of static wrist postures relative to quantitative measurements 

    E-Print Network [OSTI]

    Bohac, Melanie Dawn

    2000-01-01T23:59:59.000Z

    VALIDATING THE USE OF QUALITATIVE RATINGS OF STATIC WRIST POSTURES RELATIVE TO QUANTITATIVE MEASUREMENTS A Thesis by MELANIE DAWN BOHAC Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE December 2000 Major Subject: Safety Engineering VALIDATING THE USE OF QUALITATIVE RATINGS OF STATIC WRIST POSTURES RELATIVE TO QUANTITATIVE MEASUREMENTS A Thesis by MELANIE DAWN BOHAC Submitted to Texas...

  1. The transfer of training and skills by Texas State 4-H Council members: A qualitative study

    E-Print Network [OSTI]

    Bruce, Jacklyn Antoinette

    2004-09-30T23:59:59.000Z

    THE TRANSFER OF TRAINING AND SKILLS BY TEXAS STATE 4-H COUNCIL MEMBERS: A QUALITATIVE STUDY A Dissertation by JACKLYN ANTOINETTE BRUCE Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of DOCTOR OF PHILOSOPHY May 2003 Major Subject: Agricultural Education THE TRANSFER OF TRAINING AND SKILLS BY TEXAS STATE 4-H COUNCIL MEMBERS: A QUALITATIVE STUDY A Dissertation by JACKLYN ANTOINETTE BRUCE...

  2. E-Print Network 3.0 - aquatic biota due Sample Search Results

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

    Collection: Environmental Sciences and Ecology ; Geosciences 62 APPLIED ISSUES Effects of stream restoration and wastewater treatment Summary: at each site. 2. The WWTPs affected...

  3. E-Print Network 3.0 - air contamination due Sample Search Results

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

    Validation of a Computational Fluid Dynamics Model for IAQ applications in Ice Rink Arenas Summary: dynamics (CFD) model has been used to predict the contaminant...

  4. E-Print Network 3.0 - arabidopsis gene due Sample Search Results

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

    Universiteit - Department of Plant Systems Biology, Bioinformatics and Evolutionary Genomics Division Collection: Biology and Medicine 2 Comparative sequence analysis between...

  5. Correction due to finite speed of light in absolute gravimeters

    E-Print Network [OSTI]

    Nagornyi, V D; Zanimonskiy, Y Y

    2010-01-01T23:59:59.000Z

    Correction due to finite speed of light is among the most inconsistent ones in absolute gravimetry. Formulas reported by different authors yield corrections scattered up to 8 $\\mu$Gal with no obvious reasons. The problem, though noted before, has never been studied, and nowadays the correction is rather postulated than rigorously proven. In this paper we investigate the problem from several prospectives, find the corrections for different types of absolute gravimeters, and establish relationships between different ways of implement them. The obtained results enabled us to analyze and understand the discrepancies in the results of other authors. We found that the correction derived from the Doppler effect is accountable only for $\\tfrac{2}{3}$ of the total correction due to finite speed of light, if no signal delays are considered. Another major source of inconsistency was found in the tacit use of simplified trajectory models.

  6. Model of Procedure Usage – Results from a Qualitative Study to Inform Design of Computer-Based Procedures

    SciTech Connect (OSTI)

    Johanna H Oxstrand; Katya L Le Blanc

    2012-07-01T23:59:59.000Z

    The nuclear industry is constantly trying to find ways to decrease the human error rate, especially the human errors associated with procedure use. As a step toward the goal of improving procedure use performance, researchers, together with the nuclear industry, have been looking at replacing the current paper-based procedures with computer-based procedure systems. The concept of computer-based procedures is not new by any means; however most research has focused on procedures used in the main control room. Procedures reviewed in these efforts are mainly emergency operating procedures and normal operating procedures. Based on lessons learned for these previous efforts we are now exploring a more unknown application for computer based procedures - field procedures, i.e. procedures used by nuclear equipment operators and maintenance technicians. The Idaho National Laboratory, the Institute for Energy Technology, and participants from the U.S. commercial nuclear industry are collaborating in an applied research effort with the objective of developing requirements and specifications for a computer-based procedure system to be used by field operators. The goal is to identify the types of human errors that can be mitigated by using computer-based procedures and how to best design the computer-based procedures to do this. The underlying philosophy in the research effort is “Stop – Start – Continue”, i.e. what features from the use of paper-based procedures should we not incorporate (Stop), what should we keep (Continue), and what new features or work processes should be added (Start). One step in identifying the Stop – Start – Continue was to conduct a baseline study where affordances related to the current usage of paper-based procedures were identified. The purpose of the study was to develop a model of paper based procedure use which will help to identify desirable features for computer based procedure prototypes. Affordances such as note taking, markups, sharing procedures between fellow coworkers, the use of multiple procedures at once, etc. were considered. The model describes which affordances associated with paper based procedures should be transferred to computer-based procedures as well as what features should not be incorporated. The model also provides a means to identify what new features not present in paper based procedures need to be added to the computer-based procedures to further enhance performance. The next step is to use the requirements and specifications to develop concepts and prototypes of computer-based procedures. User tests and other data collection efforts will be conducted to ensure that the real issues with field procedures and their usage are being addressed and solved in the best manner possible. This paper describes the baseline study, the construction of the model of procedure use, and the requirements and specifications for computer-based procedures that were developed based on the model. It also addresses how the model and the insights gained from it were used to develop concepts and prototypes for computer based procedures.

  7. Analytical determination of propeller performance degradation due to ice accretion

    E-Print Network [OSTI]

    Miller, Thomas Lloyd

    1984-01-01T23:59:59.000Z

    result of exposing an airfoil in forward motion to supercooled water droplets in a sub-freezing environment. The type of ice which will form may be determined by a variety of factors including freestream velocity, liquid water content of the cloud... as rime ice, occurs at relatively low velocities, low liquid water content values (typically 0. 5 to 1. 0 grams per cubic meter), and temperature well below freezing. Due primarily to the very cold temperatures associated with rime ice formation...

  8. Reflection beamshifts of visible light due to graphene

    E-Print Network [OSTI]

    Hermosa, N

    2015-01-01T23:59:59.000Z

    I present theoretical calculations of reflection beamshifts, Goos-H\\"anchen and Imbert-Fedorov shifts, due to the presence of a monolayer graphene on a dielectric media when using a beam with wavelength in the visible range. Specifically, I look at beamshifts for different polarization states (p, s, $45^0$, $\\sigma^+$). The Goos-H\\"anchen shifts I calculated are in good agreement with results of a recent experiment. I will discuss other possible experimental routes to determine beamshifts in graphene.

  9. Qualitative Comparison of Multiscale Skin Tumor Segmentation Methods

    E-Print Network [OSTI]

    Telea, Alexandru C.

    Davila" Univ. of Medicine and Pharmacy Bucharest, Romania Alexandru Telea Univ. of Groningen, Romania Caius Solovan "Victor Babes" Univ. of Medicine and Pharmacy Timisoara, Romania Razvan Voineacu Institute for World Economy Bucharest, Romania Aim Comparison Results We acquired over 100 images of a wide

  10. Qualitative analysis of trapped Dirac fermions in graphene

    E-Print Network [OSTI]

    Vit Jakubsky; David Krejcirik

    2015-01-07T23:59:59.000Z

    We study the confinement of Dirac fermions in graphene and in carbon nanotubes by an external magnetic field, mechanical deformations or inhomogeneities in the substrate. By applying variational principles to the square of the Dirac operator, we obtain sufficient and necessary conditions for confinement of the quasi-particles. The rigorous theoretical results are illustrated on the realistic examples of the three classes of traps.

  11. Particle transport due to magnetic fluctuations

    SciTech Connect (OSTI)

    Stoneking, M.R.; Hokin, S.A.; Prager, S.C.; Fiksel, G.; Ji, H.; Den Hartog, D.J.

    1994-01-01T23:59:59.000Z

    Electron current fluctuations are measured with an electrostatic energy analyzer at the edge of the MST reversed-field pinch plasma. The radial flux of fast electrons (E>T{sub e}) due to parallel streaming along a fluctuating magnetic field is determined locally by measuring the correlated product <{tilde J}{sub e}{tilde B}{sub r}>. Particle transport is small just inside the last closed flux surface ({Gamma}{sub e,mag} < 0.1 {Gamma}{sub e,total}), but can account for all observed particle losses inside r/a=0.8. Electron diffusion is found to increase with parallel velocity, as expected for diffusion in a region of field stochasticity.

  12. Subsidence due to geothermal fluid withdrawal

    SciTech Connect (OSTI)

    Narasimhan, T.N.; Goyal, K.P.

    1982-10-01T23:59:59.000Z

    Single-phase and two-phase geothermal reservoirs are currently being exploited for power production in Italy, Mexico, New Zealand, the U.S. and elsewhere. Vertical ground displacements of upto 4.5 m and horizontal ground displacements of up t o 0.5 m have been observed at Wairakei, New Zealand that are clearly attributable to the resource exploitation. Similarly, vertical displacements of about 0.13 m have been recorded at The Geysers, California. No significant ground displacements that are attributable to large-scale fluid production have been observed at Larderello, Italy and Cerro Prieto, Mexico. Observations show that subsidence due to geothermal fluid production is characterized by such features as an offset of the subsidence bowl from the main area of production, time-lag between production and subsidence and nonlinear stress-strain relationships. Several plausible conceptual models, of varying degrees of sophistication, have been proposed to explain the observed features. At present, relatively more is known about the physical mechanisms that govern subsidence than the relevant therma mechanisms. Although attempts have been made to simulate observed geothermal subsidence, the modeling efforts have been seriously limited by a lack of relevant field data needed to sufficiently characterize the complex field system.

  13. SUBSIDENCE DUE TO GEOTHERMAL FLUID WITHDRAWAL

    SciTech Connect (OSTI)

    Narasimhan, T.N.; Goyal, K.P.

    1982-10-01T23:59:59.000Z

    Single-phase and two-phase geothermal reservoirs are currently being exploited for power production in Italy, Mexico, New Zealand, the U.S. and elsewhere. Vertical ground displacements of upto 4.5 m and horizontal ground displacements of up to 0.5 m have been observed at Wairakei, New Zealand that are clearly attributable to the resource exploitation. Similarly, vertical displacements of about 0.13 m have been recorded at The Geysers, California. No significant ground displacements that are attributable to large-scale fluid production have been observed at Larderello, Italy and Cerro Prieto, Mexico. Observations show that subsidence due to geothermal fluid production is characterized by such features as an offset of the subsidence bowl from the main area of production, time-lag between production and subsidence and nonlinear stress-strain relationships. Several plausible conceptual models, of varying degrees of sophistication, have been proposed to explain the observed features. At present, relatively more is known about the physical mechanisms that govern subsidence than the relevant thermal mechanisms. Although attempts have been made to simulate observed geothermal subsidence, the modeling efforts have been seriously limited by a lack of relevant field data needed to sufficiently characterize the complex field system.

  14. Life Extinction Due To Neutron Star Mergers

    E-Print Network [OSTI]

    Arnon Dar; Ari Laor; Nir J. Shaviv

    1996-11-24T23:59:59.000Z

    Cosmic ray bursts (CRBs) from mergers or accretion induced collapse of neutron stars that hit an Earth-like planet closer than $\\sim 1 kpc$ from the explosion produce lethal fluxes of atmospheric muons at ground level, underground and underwater. These CRBs also destroy the ozone layer and radioactivate the environment. The mean rate of such life devastating CRBs is one in 100 million years (Myr), consistent with the observed 5 ``great'' extinctions in the past 600 Myr. Unlike the previously suggested extraterrestrial extinction mechanisms the CRBs explain massive life extinction on the ground, underground and underwater and the higher survival levels of radiation resistant species and of terrain sheltered species. More distant mergers can cause smaller extinctions. Biological mutations caused by ionizing radiation produced by the CRB may explain a fast appearance of new species after mass extinctions. The CRB extinction predicts detectable enrichment of rock layers which formed during the extinction periods with cosmogenically produced radioactive nucleides such as $^{129}$I, $^{146}$Sm, $^{205}$Pb with and $^{244}$Pu. Tracks of high energy particles in rock layers on Earth and on the moon may also contain records of intense CRBs. An early warning of future extinctions due to neutron star mergers can be obtained by identifying, mapping and timing all the nearby binary neutron stars systems. A final warning of an approaching CRB from a nearby neutron stars merger will be provided by a gamma ray burst a few days before the arrival of the CRB.

  15. Performance degradation of OFDM systems due to Doppler spreading

    E-Print Network [OSTI]

    Wang, T J; Proakis, J G; Masry, E; Zeidler, James R

    2006-01-01T23:59:59.000Z

    6, JUNE 2006 Performance Degradation of OFDM Systems Due toWANG et al. : PERFORMANCE DEGRADATION OF OFDM SYSTEM DUE TOWANG et al. : PERFORMANCE DEGRADATION OF OFDM SYSTEM DUE TO

  16. Optical loss due to diffraction by concentrator Fresnel lenses

    SciTech Connect (OSTI)

    Hornung, Thorsten, E-mail: thorsten.hornung@ise.fraunhofer.de; Nitz, Peter, E-mail: thorsten.hornung@ise.fraunhofer.de [Fraunhofer Institute for Solar Energy Systems ISE, Heidenhofstr. 2, 79110 Freiburg (Germany)

    2014-09-26T23:59:59.000Z

    Fresnel lenses are widely used in concentrating photovoltaic (CPV) systems as a primary optical element. They focus sunlight on small solar cells or on the entrance apertures of secondary optical elements. A Fresnel lens consists of several prism rings and diffraction by these prism rings is unavoidable. Some of the light that would reach a designated target area according to geometric optics will miss it due to diffraction. This diffraction loss may be of relevant magnitude for CPV applications. The results of published analytical calculations are evaluated, discussed, and compared to computer simulations and measurements.

  17. SC11 Education Program Applications due July 31

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

    SC11 Education Program Applications due July 31 SC11 Education Program Applications due July 31 June 9, 2011 by Francesca Verdier (0 Comments) Applications for the Education...

  18. Renewable Energy Loan Applications Due Today! | Department of...

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

    Renewable Energy Loan Applications Due Today Renewable Energy Loan Applications Due Today October 5, 2010 - 12:15pm Addthis Ebony Meeks Former Assistant Press Secretary, Office...

  19. Summer 2012 National Geothermal Academy: Applications Due February...

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

    Summer 2012 National Geothermal Academy: Applications Due February 15 Summer 2012 National Geothermal Academy: Applications Due February 15 January 23, 2012 - 4:02pm Addthis Course...

  20. ASCR Leadership Computing Challenge (ALCC) proposals due February...

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

    (ALCC) proposals due February 1, 2013 ASCR Leadership Computing Challenge (ALCC) proposals due February 1, 2013 January 2, 2013 by Francesca Verdier (0 Comments) DOE's ASCR...

  1. ASCR Leadership Computing Challenge Requests for Time Due February...

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

    Requests for Time Due February 14 ASCR Leadership Computing Challenge Requests for Time Due February 14 November 17, 2011 by Francesca Verdier (0 Comments) The ASCR Leadership...

  2. ASCR Leadership Computing Challenge proposals due February 3

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

    ASCR Leadership Computing Challenge proposals due February 3 ASCR Leadership Computing Challenge proposals due February 3 January 6, 2015 by Francesca Verdier (0 Comments) The...

  3. air pollutants due: Topics by E-print Network

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

    23 24 25 Next Page Last Page Topic Index 1 Quantifying precipitation suppression due to air Pollution Geosciences Websites Summary: Quantifying precipitation suppression due to...

  4. Runs 5 through 7 were stopped prematurely due to the fact that the PET product severely plugged the vent to the condenser. These were also completed after several modifications to the autoclave setup

    E-Print Network [OSTI]

    Runs 5 through 7 were stopped prematurely due to the fact that the PET product severely plugged modifications did not cause the plug. Conclusions Qualitatively, the objective was for the PET to be clear of the runs were varying degrees of yellow indicating that the PET began to degrade in the autoclave

  5. Using Narrative Function to Extract Qualitative Information from Natural Language Texts

    E-Print Network [OSTI]

    Forbus, Kenneth D.

    language semantics. Kuehne (2004) showed that the constructs of qualitative process (QP) theory (Forbus.aaai.org). All rights reserved. constrained (the consequent quantity), and sign (the direction of change). Kuehne, influences, and processes), Kuehne identified a set of syntactic patterns that could be used to extract them

  6. QUALITATIVE UPDATED DISCUSSION OF ATLANTIC BASIN SEASONAL HURRICANE ACTIVITY FOR 2012

    E-Print Network [OSTI]

    Gray, William

    QUALITATIVE UPDATED DISCUSSION OF ATLANTIC BASIN SEASONAL HURRICANE ACTIVITY FOR 2012 We anticipate that the 2012 Atlantic basin hurricane season will have reduced activity compared with the 1981 hurricane season. Our first quantitative forecast for 2012 will be issued on Wednesday, April 4. (as of 21

  7. "I regretted the minute I pressed share": A Qualitative Study of Regrets on Facebook

    E-Print Network [OSTI]

    Sadeh, Norman M.

    "I regretted the minute I pressed share": A Qualitative Study of Regrets on Facebook Yang Wang wang 569 Ameri- can Facebook users. Their regrets revolved around sensitive top- ics, content with strong the Facebook plat- form. Some reported incidents had serious repercussions, such as breaking up relationships

  8. Study of a transition in the qualitative behaviour of a simple oscillator with Coulomb friction

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    in the following way: when a system involving unilateral contact and dry friction is submitted to an oscillatingStudy of a transition in the qualitative behaviour of a simple oscillator with Coulomb friction. Keywords Coulomb friction, equilibrium states, mass-spring systems, nonsmooth dynamics. 1 Introduction

  9. BioSystems xxx (2006) xxxxxx Qualitative analysis of the relation between DNA microarray

    E-Print Network [OSTI]

    Radulescu, Ovidiu

    2006-01-01T23:59:59.000Z

    BioSystems xxx (2006) xxx­xxx Qualitative analysis of the relation between DNA microarray data:10.1016/j.biosystems.2005.10.006 BIO-2511; No. of Pages 22 #12;2 A. Siegel et al. / BioSystems xxx (2006) xxx­xxx tinuous and discrete models is made by piecewise linear differential models (de Jong et

  10. The Riacho Fundo water basin: a case study for qualitative modelling sustainable development

    E-Print Network [OSTI]

    Bailey-Kellogg, Chris

    of sustainable development related problems. The models aim at supporting stakeholders to understand the systemsThe Riacho Fundo water basin: a case study for qualitative modelling sustainable development Paulo presents a working plan for modelling relevant aspects of sustainability issues in the Riacho Fundo water

  11. QUALITATIVE ASYMMETRY MEASURE FOR MELANOMA DETECTION Michele d'Amico, Massimo Ferri,

    E-Print Network [OSTI]

    Ferri, Massimo

    QUALITATIVE ASYMMETRY MEASURE FOR MELANOMA DETECTION Michele d'Amico, Massimo Ferri, ARCES­validation are reported. 1. INTRODUCTION Since 1980, cutaneous malignant melanoma (CMM) was one of the ten most frequent and their discrimination between naevi and melanomas (see, e.g., [2, 3, 9, 7]). Most of them keep into account

  12. MICRO-CAPTEURS POUR LA GESTION DURABLE DE LA QUALITE DES EAUX Namour Philippe1 *

    E-Print Network [OSTI]

    Boyer, Edmond

    1 MICRO-CAPTEURS POUR LA GESTION DURABLE DE LA QUALITE DES EAUX Namour Philippe1 * , Khadro Basma 2 gestion, de protection et de restauration des eaux de surface et des ressources souterraines des bassins gestion et d'interprétation de ces données. Toutefois actuellement ce nouveau type d'instrumentation ne

  13. Atmospheric Environment 38 (2004) 49214929 Qualitative assessment of methane emission inventory from

    E-Print Network [OSTI]

    Columbia University

    assurance/quality control (QA/QC) and uncertainty estimation in national GHG emission inventories haveAtmospheric Environment 38 (2004) 4921­4929 Qualitative assessment of methane emission inventory May 2004 Abstract In developing countries like India, urban solid waste (SW) generation is increasing

  14. ORIGINAL PAPER Qualitative risk assessment of the role of the feral wild boar

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ORIGINAL PAPER Qualitative risk assessment of the role of the feral wild boar (Sus scrofa of the pathogens but also to understand how the ecology and behaviour of wild boar would affect disease with disease entering through the consumption of infected pork meat or meat products by either wild boar

  15. CIRQ: Qualitative fluid flow modelling for aerospace FMEA applications Neal Snooke

    E-Print Network [OSTI]

    Snooke, Neal

    M2 CIRQ: Qualitative fluid flow modelling for aerospace FMEA applications Neal Snooke Department- oped on top of the MCIRQ simulator with the aim to produce an automated FMEA for aircraft fuel systems similar to pre- viously developed automated electrical FMEA. Introduction This paper describes a circuit

  16. Changes in Dimethyl Sulfide Oceanic Distribution due to Climate Change

    SciTech Connect (OSTI)

    Cameron-Smith, P; Elliott, S; Maltrud, M; Erickson, D; Wingenter, O

    2011-02-16T23:59:59.000Z

    Dimethyl sulfide (DMS) is one of the major precursors for aerosols and cloud condensation nuclei in the marine boundary layer over much of the remote ocean. Here they report on coupled climate simulations with a state-of-the-art global ocean biogeochemical model for DMS distribution and fluxes using present-day and future atmospheric CO{sub 2} concentrations. They find changes in zonal averaged DMS flux to the atmosphere of over 150% in the Southern Ocean. This is due to concurrent sea ice changes and ocean ecosystem composition shifts caused by changes in temperature, mixing, nutrient, and light regimes. The largest changes occur in a region already sensitive to climate change, so any resultant local CLAW/Gaia feedback of DMS on clouds, and thus radiative forcing, will be particularly important. A comparison of these results to prior studies shows that increasing model complexity is associted with reduced DMS emissions at the equator and increased emissions at high latitudes.

  17. Characterization of unsteady loading due to impeller-diffuser interaction in centrifugal compressors

    E-Print Network [OSTI]

    Lusardi, Christopher (Christopher Dean)

    2012-01-01T23:59:59.000Z

    Time dependent simulations are used to characterize the unsteady impeller blade loading due to imipeller-diffuser interaction in centrifugal compressor stages. The capability of simulations are assessed by comparing results ...

  18. Qualitative Building Detection from Monocular Images Based on Linquistic Context \\Lambda

    E-Print Network [OSTI]

    Zhang, Zhongfei "Mark"

    , surveillance monitoring, and target recognition. Due to its practical interests, there have been several

  19. Moisture Risk in Unvented Attics Due to Air Leakage Paths

    SciTech Connect (OSTI)

    Prahl, D.; Shaffer, M.

    2014-11-01T23:59:59.000Z

    IBACOS completed an initial analysis of moisture damage potential in an unvented attic insulated with closed-cell spray polyurethane foam. To complete this analysis, the research team collected field data, used computational fluid dynamics to quantify the airflow rates through individual airflow (crack) paths, simulated hourly flow rates through the leakage paths with CONTAM software, correlated the CONTAM flow rates with indoor humidity ratios from Building Energy Optimization software, and used Warme und Feuchte instationar Pro two-dimensional modeling to determine the moisture content of the building materials surrounding the cracks. Given the number of simplifying assumptions and numerical models associated with this analysis, the results indicate that localized damage due to high moisture content of the roof sheathing is possible under very low airflow rates. Reducing the number of assumptions and approximations through field studies and laboratory experiments would be valuable to understand the real-world moisture damage potential in unvented attics.

  20. Massloss of galaxies due to a UV-background

    E-Print Network [OSTI]

    Takashi Okamoto; Liang Gao; Tom Theuns

    2008-07-25T23:59:59.000Z

    We perform cosmological hydrodynamic simulations to determine to what extent galaxies lose their gas due to photoheating from an ionizing background. We find that the characteristic mass at which haloes on average have lost half of their baryons is Mc ~ 6.5 x 10^9 Msun/h at z = 0, which corresponds to a circular velocity of 25 km/s. This is significantly lower than the filtering mass obtained by the linear theory, which is often used in semianalytical models of galaxy formation. We demonstrate it is the gas temperature at the virial radius which determines whether a halo can accrete gas. A simple model that follows the merger history of the dark matter progenitors, and where gas accretion is not allowed when this temperature is higher than the virial temperature of the halo, reproduces the results from the simulation remarkably well. This model can be applied to any reionization history, and is easy to incorporate in semianalytical models.

  1. Results from NEMO 3

    E-Print Network [OSTI]

    R. L. Flack; for the NEMO 3 collaboration

    2008-10-30T23:59:59.000Z

    The NEMO 3 experiment is located in the Modane Underground Laboratory and has been taking data since 2003 with seven isotopes. It is searching for the double beta decay process with two or zero neutrinos emitted in the final state. Precision measurements of the half-life of the isotopes due to two neutrino double beta decay have been performed and new results for 96Zr, 48Ca and 150Nd are presented here. Measurements of this process are important for reducing the uncertainties on the nuclear matrix elements. No evidence for zero neutrino double beta decay has been found and a 90% Confidence Level lower limit on the half-life of this process is derived. From this an upper limit can be set on the effective Majorana neutrino mass using the most recent nuclear matrix elements calculations.

  2. [PPT] Listening to Our Students: Enhancing Library Instruction Through a Qualitative Assessment of Student Feedback

    E-Print Network [OSTI]

    Goodwin, Susan; Budzise-Weaver, Tina

    2012-01-01T23:59:59.000Z

    Listening to Our Students: Enhancing Library Instruction Through a Qualitative Assessment of Student Feedback Susan P. Goodwin and Tina Budzise-Weaver U N I V E S I T Y L I B R A R I E S Student Feedback Form Assessment ? Report... • sgoodwin@library.tamu.edu Tina Budzise-Weaver • Texas A&M University Libraries • Dept. of Library and Information Sciences, University of North Texas • tmweaver@library.tamu.edu ...

  3. Identifying linguistically diverse students as gifted and talented: a qualitative study of adding a new measure

    E-Print Network [OSTI]

    Breedlove, Lynette

    2009-05-15T23:59:59.000Z

    Identifying Linguistically Diverse Students as Gifted and Talented: A Qualitative Study of Adding a New Measure. (August 2007) Lynette Breedlove, B.A., Rhodes College; M.Ed., University of St. Thomas Co-Chairs of Advisory Committee: Dr. William R... Approved by: Co-Chairs of Committee, William R. Nash Joyce E. Juntune Committee Members, Laura M. Stough Diane S. Kaplan Head of Department, Michael R. Benz August 2007 Major Subject: Educational Psychology iii ABSTRACT...

  4. ANSI/ASHRAE/IESNA Standard 90.1-2007 Preliminary Qualitative Determination

    SciTech Connect (OSTI)

    Halverson, Mark A.; Liu, Bing; Richman, Eric E.; Winiarski, David W.

    2010-05-25T23:59:59.000Z

    A preliminary qualitative analysis of all addenda to ANSI/ASHRAE/IESNA Standard 90.1-2004 that were included in ANSI/ASHRAE/IESNA Standard 90.1-2007 was conducted. All 44 addenda processed by ASHRAE in the creation of Standard 90.1-2007 from Standard 90.1-2004 were evaluated by DOE for their impact on energy efficiency. DOE preliminarily determined whether that addenda would have a positive, neutral, or negative impact on overall building efficiency.

  5. FAMILY NEEDS OF CHINESE FAMILIES WITH CHILDREN WITH INTELLECTUAL AND DEVELOPMENTAL DISABILITIES: A QUALITATIVE INQUIRY

    E-Print Network [OSTI]

    Hu, Xiaoyi

    2011-07-19T23:59:59.000Z

    F AMIL Y NEEDS OF CHINESE FAMILIES WITH CHILDREN WITH INTELLECTUAL AND DEVELOPMENTAL DISABILITIES: A QUALITATIVE INQUIRY By Xiaoyi Hu Submitted to the Department of Special Education and the Faculty of the Graduate School...UI, LLM ~~~ la~ Mian Wang, h.D. Dissertation defended: June, 241\\ 2011 Copyright 2011 The Dissertation Committee for Xiaoyi Hu certifies that this is the approved version of the following dissertation: F AMIL Y NEEDS OF CHINESE FAMILIES...

  6. Exploring Food Insecurity among Individuals with Serious Mental Illness: A Qualitative Study

    E-Print Network [OSTI]

    Goetz, Jeannine Renee

    2008-05-05T23:59:59.000Z

    of international development work (Cook, 2002). Although several nutrition-assistance programs were established to assist vulnerable or underserved populations during prior years, it was not until 1984 that the President?s Task Force on Food Assistance demanded... EXPLORING FOOD INSECURITY AMONG INDIVIDUALS WITH SERIOUS MENTAL ILLNESS: A QUALITATIVE STUDY BY Jeannine Renee Goetz Submitted to the graduate degree program in Occupational Therapy and the Graduate Faculty of the University of Kansas...

  7. Rising Sea Levels Due to Global Warming Are Unstoppable

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

    Rising Sea Levels Due to Global Warming Are Unstoppable Rising Sea Levels Due to Global Warming Are Unstoppable Mitigation can slow down but not prevent sea level rise for...

  8. Disaster Unemployment Assistance (DUA) Due to Effects of Hurricane Sandy

    E-Print Network [OSTI]

    Brinkmann, Peter

    Disaster Unemployment Assistance (DUA) Due to Effects of Hurricane Sandy Factsheet Have you lost work or income due to the effects of Hurricane Sandy? If so, you may be eligible for Disaster due to the effects of hurricane sandy, you may qualify for DUA. there are different eligibility

  9. Oscillation of bundle conductors in overhead lines due to turbulent wind

    SciTech Connect (OSTI)

    Diana, G.; Cheli, F. (Politecnico di Milano, Milano (IT)); Manenti, A. (Universita degli Studi di Brescia, Brescia (IT)); Nicolini, P.; Tavano, F. (ENEL/CREI, Milano (IT))

    1990-10-01T23:59:59.000Z

    Due to the wind, the bundle conductors in overhead lines can oscillate and the distance between the phases can be reduced. This kind of movement may be caused by: non expansive oscillations of the phases due to the wind turbulence and to the correlated variations of the bundles aerodynamic coefficients during the movement (buffeting); expansive oscillations, or galloping, of the phases due to the unstable aerodynamic shapes that bundles may assume in presence of ice. This paper presents an analytical methodology to examine the dynamic behaviour of bundles subjected to the above mentioned phenomena. The results obtained during experiments carried out on a span of an energized 420-kV line equipped with triple bundles and subjected to oscillations due to buffeting are exposed. Lastly, the experimental data are compared with the analytical results.

  10. MIT Testing Results V.B. Graves

    E-Print Network [OSTI]

    McDonald, Kirk

    . DEPARTMENT OF ENERGY MUTAC Review BNL 18 Apr 2007 Hg System Schematic Sump tank CV1 VT VDHg Cylinder pressure due to field, but no effects observed · Water vapor issues inside jet chamber resulted in addition of strip heater on exterior of chamber · External bore heater had to be reconfigured due to clearance

  11. Modalities, Sites and Practices of Family Literacy: A Qualitative Interpretation of Family Photographs through Interviews and Observations 

    E-Print Network [OSTI]

    Lipsett, Tiffany Marie-Hamlin

    2012-10-19T23:59:59.000Z

    This qualitative arts-based research study explores family literacy experiences that occur in homes with adults and children through interviews, observations, and the visual analysis of photographs that document such experiences. I employ visual...

  12. Preparation to teach agricultural mechanics: a qualitative case study of expert agricultural science and technology teachers in Texas

    E-Print Network [OSTI]

    Ford, Richard Kirby

    2006-04-12T23:59:59.000Z

    for future teaching of high school agricultural mechanics. Data were collected, analyzed, and reported using accepted a qualitative protocol to develop emergent themes. Successful agricultural science and technology teachers agreed that their undergraduate...

  13. Qualitative analysis of food webs in the Pacific Ocean J Young, J Dambacher, R Olson, V Allain, F

    E-Print Network [OSTI]

    Hawai'i at Manoa, University of

    Ocean #12;Stomach collections Stomachs collected : CSIRO 3102, SPC 1691, IATTC 3882 Sampling area ~ 35 player Qualitative analyses: method flow chart Perturbations of species/groups to positive or negative

  14. Murder, mayhem, and mourning: a qualitative study of the experiences, reactions, and coping mechanisms of homicide survivors

    E-Print Network [OSTI]

    Quisenberry, Clinton Edward

    2010-07-14T23:59:59.000Z

    MURDER, MAYHEM, AND MOURNING: A QUALITATIVE STUDY OF THE EXPERIENCES, REACTIONS, AND COPING MECHANISMS OF HOMICIDE SURVIVORS A Dissertation by CLINTON EDWARD QUISENBERRY Submitted to the Office of Graduate Studies of Texas A...&M University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY May 2009 Major Subject: Counseling Psychology MURDER, MAYHEM, AND MOURNING: A QUALITATIVE STUDY OF THE EXPERIENCES, REACTIONS, AND COPING...

  15. Building Toward a Consistent Program Evaluation: A Qualitative Study of Community Reaction to Development Programs in Limón, Costa Rica

    E-Print Network [OSTI]

    Shane, Caleb Jonathan

    2012-10-19T23:59:59.000Z

    participatory qualitative methods to replace quantitative methods such as surveys or questionnaires, this logic model emphasizes that participatory qualitative methods—when used in combination with quantitative methods—are able to provide increased validity...). Environmental Degradation: The deterioration of the environment through the depletion of natural resources and the destruction of ecosystems (Donohoe, 2003). 23 Environmental Education: Organized efforts to teach people to learn to live in ways...

  16. acid intoxication due: Topics by E-print Network

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

    of asphaltene deposition that occurs during acid treatments of oil reservoirs. Asphaltenes are present to some degree in most hydrocarbons. Due to the molecular weight of the...

  17. aqueduct stenosis due: Topics by E-print Network

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

    and Technology (POSTECH), Pohang 790-784, Republic Cambridge, University of 109 Probabilistic Naturalness Measure for Dipole Moments due to New Physics HEP - Phenomenology...

  18. amelogenesis imperfecta due: Topics by E-print Network

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

    and Technology (POSTECH), Pohang 790-784, Republic Cambridge, University of 88 Probabilistic Naturalness Measure for Dipole Moments due to New Physics HEP - Phenomenology...

  19. aplastic crisis due: Topics by E-print Network

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

    a crisis due to doubling of fertilizer, grain, and fuel costs. New and better forage management practices 4 Aloimmunity against HLA class I antigens in patients with...

  20. attack damage due: Topics by E-print Network

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

    Cell damage extent due to irradiation with nanosecond laser pulses under cell culturing medium and dry environment Engineering Websites Summary: Autnoma de Mxico; Av....

  1. ANSI/ASHRAE/IES Standard 90.1-2013 Determination of Energy Savings: Qualitative Analysis

    SciTech Connect (OSTI)

    Halverson, Mark A.; Rosenberg, Michael I.; Hart, Philip R.; Richman, Eric E.; Athalye, Rahul A.; Winiarski, David W.

    2014-09-04T23:59:59.000Z

    This report provides a final qualitative analysis of all addenda to ANSI/ASHRAE/IES Standard 90.1-2010 (referred to as Standard 90.1-2010 or 2010 edition) that were included in ANSI/ASHRAE/IES Standard 90.1-2013 (referred to as Standard 90.1-2013 or 2013 edition). All addenda in creating Standard 90.1-2013 were evaluated for their projected impact on energy efficiency. Each addendum was characterized as having a positive, neutral, or negative impact on overall building energy efficiency.

  2. Modifications of alpha processing software to improve calculation of limits for qualitative detection

    SciTech Connect (OSTI)

    Kirkpatrick, J.R.

    1997-01-01T23:59:59.000Z

    The work described in this report was done for the Bioassay Counting Laboratory (BCL) of the Center of Excellence for Bioassay of the Analytical Services Organization at the Oak Ridge Y-12 Plant. BCL takes urine and fecal samples and tests for alpha radiation. An automated system, supplied by Canberra Industries, counts the activities in the samples and processes the results. The Canberra system includes hardware and software. The managers of BCL want to improve the accuracy of the results they report to their final customers. The desired improvements are of particular interest to the managers of BCL because the levels of alpha-emitting radionuclides in samples measured at BCL are usually so low that a significant fraction of the measured signal is due to background and to the reagent material used to extract the radioactive nuclides from the samples. Also, the background and reagent signals show a significant level of random variation. The customers at BCL requested four major modifications of the software. The requested software changes have been made and tested. The present report is in two parts. The first part describes what the modifications were supposed to accomplish. The second part describes the changes on a line-by-line basis. The second part includes listings of the changed software and discusses possible steps to correct a particular error condition. Last, the second part describes the effect of truncation errors on the standard deviations calculated from samples whose signals are very nearly the same.

  3. Enhancement of Zirconolite Dissolution Due to Water Radiolysis

    SciTech Connect (OSTI)

    Tribet, Magaly; Moncoffre, Nathalie [CNRS/Universite Claude Bernard Lyon 1, Institut de Physique Nucleaire de Lyon, 4 rue Enrico Fermi, Villeurbanne, 69622 (France); Toulhoat, Nelly [CNRS/Universite Claude Bernard Lyon 1, Institut de Physique Nucleaire de Lyon, 4 rue Enrico Fermi, Villeurbanne, 69622 (France)]|[Commissariat a l'Energie Atomique, DEN, CEN Saclay, Gif sur Yvette cedex, 91191 (France); Toulhoat, Pierre [CNRS/ISA Universite Claude Bernard Lyon 1, UFR de Chimie Biochimie, Villeurbanne, 69622 (France); Jegou, Christophe [Commissariat a l'Energie Atomique, DEN/DTCD/SECM, CEN Valrho, Bagnols sur Ceze cedex, 30207 (France); Corbel, Catherine [Commissariat a l'Energie Atomique, DSM/DRECAM/LSI, Ecole Polytechnique, palaiseau, 91128 (France); Bardez, Isabelle; Leturcq, Gilles [Commissariat a l'Energie Atomique, DEN/DRCP/SCPS, CEN Valrho, Bagnols sur Ceze cedex, 30207 (France)

    2007-07-01T23:59:59.000Z

    Zirconolite is a candidate host material for conditioning minor tri- and tetra-valent actinides arising from enhanced nuclear spent fuel reprocessing and partitioning, in the case of disposal of the nuclear waste. Its chemical durability has been studied here under charged particle-induced radiolysis (He{sup 2+} and proton external beams) to identify the possible effects of water radiolysis on the dissolution rates in pure water and to describe the alteration mechanisms. Two experimental geometries have been used in order to evaluate the influence of the following parameters: solid irradiation, water radiolysis. In the first geometry the beam gets through the sample before stopping at the surface/water interface. In the second one the beam stops before the surface/water interface. Results on the elemental releases due to the enhanced dissolution of the zirconolite surface during charged particle-induced irradiation of water are presented. Under radiolysis, an increase of one order of magnitude is observed in the Ti, Zr and Nd elemental releases. No difference in the total elemental releases can be noticed when the solid is also irradiated. (authors)

  4. Risk management study for the retired Hanford Site facilities: Qualitative risk evaluation for the retired Hanford Site facilities. Volume 3

    SciTech Connect (OSTI)

    Coles, G.A.; Shultz, M.V.; Taylor, W.E.

    1993-09-01T23:59:59.000Z

    This document provides a risk evaluation of the 100 and 200 Area retired, surplus facilities on the Hanford Site. Also included are the related data that were compiled by the risk evaluation team during investigations performed on the facilities. Results are the product of a major effort performed in fiscal year 1993 to produce qualitative information that characterizes certain risks associated with these facilities. The retired facilities investigated for this evaluation are located in the 100 and 200 Areas of the 1,450-km{sup 2} (570-mi{sup 2}) Hanford Site. The Hanford Site is a semiarid tract of land in southeastern Washington State. The nearest population center is Richland, Washington, (population 32,000) 30-km (20 mi) southeast of the 200 Area. During walkdown investigations of these facilities, data on real and potential hazards that threatened human health or safety or created potential environmental release issues were identified by the risk evaluation team. Using these findings, the team categorized the identified hazards by facility and evaluated the risk associated with each hazard. The factors contributing to each risk, and the consequence and likelihood of harm associated with each hazard also are included in this evaluation.

  5. LSND neutrino oscillation results

    SciTech Connect (OSTI)

    Louis, W.C.; LSND Collaboration

    1996-10-01T23:59:59.000Z

    The LSND (Liquid Scintillator Neutrino Detector) experiment at Los Alamos has conducted a search for muon antineutrino {r_arrow} electron antineutrino oscillations using muon neutrinos from antimuon decay at rest. The electron antineutrinos are detected via the reaction electron antineutrino + proton {r_arrow} positron + neutron, correlated with the 2.2-MeV gamma from neutron + proton {r_arrow} deuteron + gamma. The use of tight cuts to identify positron events with correlated gamma rays yields 22 events with positron energy between 36 and 60 MeV and only 4.6 {+-} 0.6 background events. The probability that this excess is due entirely to a statistical fluctuation is 4.1 {times} 10{sup -8}. A chi-squared fit to the entire positron sample results in a total excess of 51.8 {sup +18.7}{sub -16.9} {+-} 8.0 events with positron energy between 20 and 60 MeV. If attributed to muon antineutrino {r_arrow} electron antineutrino oscillations, this corresponds to an oscillation probability (averaged over the experimental energy and spatial acceptance) of (0.31 {+-} 0.12 {+-} 0.05){percent}. 10 refs., 7 figs., 1 tab.

  6. LSND neutrino oscillation results

    SciTech Connect (OSTI)

    White, D.H.; LSND Collaboration

    1997-11-01T23:59:59.000Z

    The LSND experiment at Los Alamos has conducted a search for {anti v}{sub {mu}} {yields} {anti v}{sub e} oscillations using {anti v}{sub {mu}} from {mu}{sup +} decay at rest. The {anti v}{sub e} are detected via the reaction {anti v}{sub e} p {yields} e{sup +}n, correlated with the 2.2 MeV {gamma} from n p {yields} d {gamma}. The use of tight cuts to identify e{sup +} events with correlated {gamma} rays yielded 22 events with e{sup +} energy between 36 and 60 MeV and only 4.6 {+-} 0.6 background events. The probability that this excess is due entirely to a statistical fluctuation is 4.1 {times} 10{sup {minus}8}. A {chi}{sup 2} fit to the entire e{sup +} sample results in a total excess of 51.8{sub {minus}16.9}{sup +18.7} {+-} 8.0 events with e{sup +} energy between 20 and 60 MeV. If attributed to {anti v}{sub {mu}} {yields} {anti v}{sub e} oscillations, this corresponds to an oscillation probability (averaged over the experimental energy and spatial acceptance) of 0.31 {+-} 0.12 {+-} 0.05%.

  7. A Qualitative Investigation of Deposition Velocities of a Non-Newtonian Slurry in Complex Pipeline Geometries

    SciTech Connect (OSTI)

    Yokuda, Satoru T.; Poloski, Adam P.; Adkins, Harold E.; Casella, Andrew M.; Hohimer, Ryan E.; Karri, Naveen K.; Luna, Maria; Minette, Michael J.; Tingey, Joel M.

    2009-05-11T23:59:59.000Z

    The External Flowsheet Review Team (EFRT) has identified the issues relating to the Waste Treatment and Immobilization Plant (WTP) pipe plugging. Per the review’s executive summary, “Piping that transports slurries will plug unless it is properly designed to minimize this risk. This design approach has not been followed consistently, which will lead to frequent shutdowns due to line plugging.” To evaluate the potential for plugging, testing was performed to determine critical velocities for the complex WTP piping layout. Critical velocity is defined as the point at which a moving bed of particles begins to form on the pipe bottom during slurry-transport operations. Pressure drops across the fittings of the test pipeline were measured with differential pressure transducers, from which the critical velocities were determined. A WTP prototype flush system was installed and tested upon the completion of the pressure-drop measurements. We also provide the data for the overflow relief system represented by a WTP complex piping geometry with a non-Newtonian slurry. A waste simulant composed of alumina (nominally 50 ?m in diameter) suspended in a kaolin clay slurry was used for this testing. The target composition of the simulant was 10 vol% alumina in a suspending medium with a yield stress of 3 Pa. No publications or reports are available to confirm the critical velocities for the complex geometry evaluated in this testing; therefore, for this assessment, the results were compared to those reported by Poloski et al. (2008) for which testing was performed for a straight horizontal pipe. The results of the flush test are compared to the WTP design guide 24590-WTP-GPG-M-0058, Rev. 0 (Hall 2006) in an effort to confirm flushing-velocity requirements.

  8. anomalous diffusion due: Topics by E-print Network

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

    uptake of 99m Tc-MDP. The mechanism of extraskeletal uptake of bone-seeking radiopharmaceuticals in damaged, inflamed, neoplastic or necrotic tissues may be due to dystrophic...

  9. Technology Solutions Case Study: Overcoming Comfort Issues Due...

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

    Issues Due to Reduced Flow Room Air Mixing Energy efficiency upgrades reduce heating and cooling loads on a house. With enough load reduction and if the heating, ventilating, and...

  10. Problems Of The Week Due March 26th

    E-Print Network [OSTI]

    Bigelow, Stephen

    Problems Of The Week Due March 26th Make sure to review the guidelines before you start! You can triangle are whole numbers. The perimeter of the triangle is 110 inches and one side has measure 29 inches

  11. arabian sea due: Topics by E-print Network

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

    coupled feedback makes a non-trivial contribution substantially reduce the latent heat loss. The long-term latent heat flux change due to eddies in the model Jochum, Markus...

  12. PRESSURIZATION OF FIXED ROOF STORAGE TANKS DUE TO EXTERNAL FIRES

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    PRESSURIZATION OF FIXED ROOF STORAGE TANKS DUE TO EXTERNAL FIRES Fabien FouiHen, INERIS, Parc initiating event of the fire ball observed. In concrete terms, when a fixed roof storage tank is surrounded

  13. anaphylactic reactions due: Topics by E-print Network

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

    storage tank in a Mauritian sugar factory near the end of the 1994 crushing season. The remedial action taken is detailed and the economic loss due to the incident is assessed....

  14. Differences in radar derived rainfall amounts due to sampling intervals

    E-Print Network [OSTI]

    Zdenek, David James

    1986-01-01T23:59:59.000Z

    DIFFERENCES IN RADAR DERIVED RAINFALL AMOUNTS DUE TO SAMPLING INTERVALS A Thesis by DAVID JAMES ZDENEK Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE... December 1986 Major Subject: Meteorology DIFFERENCES IN RADAR DERIVED RAINFALL AMOUNTS DUE TO SAMPLING INTERVALS A Thesis by DAVID JAMES ZDENEK Approved as to style and content by: eorge L. Huebner (Chairman of Committee) CP~ CG~& Robert C...

  15. ANSI/ASHRAE/IES Standard 90.1-2010 Final Qualitative Determination

    SciTech Connect (OSTI)

    Halverson, Mark A.; Rosenberg, Michael I.; Williamson, Jennifer L.; Richman, Eric E.; Liu, Bing

    2011-10-31T23:59:59.000Z

    A final qualitative analysis of all addenda to American National Standards Institute (ANSI)/American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE)/Illuminating Engineering Society of North America (IESNA) Standard 90.1-2007 (Standard 90.1-2007 or 2007 edition) that were included in ANSI/ASHRAE/IESNA Standard 90.1-2010 (Standard 90.1-2010 or 2010 edition) was conducted. All 109 addenda processed by ASHRAE in the creation of Standard 90.1-2010 from Standard 90.1-2007 were evaluated by DOE for their impact on energy efficiency. DOE determined whether each addendum would have a positive, neutral, or negative impact on overall building efficiency.

  16. ANSI/ASHRAE/IESNA Standard 90.1-2010 Preliminary Qualitative Determination

    SciTech Connect (OSTI)

    Halverson, Mark A.; Williamson, Jennifer L.; Liu, Bing; Rosenberg, Michael I.; Richman, Eric E.

    2010-11-01T23:59:59.000Z

    A preliminary qualitative analysis of all addenda to American National Standards Institute (ANSI)/American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE)/Illuminating Engineering Society of North America (IESNA) Standard 90.1-2007 (Standard 90.1-2007 or 2007 edition) that were included in ANSI/ASHRAE/IESNA Standard 90.1-2010 (Standard 90.1-2010 or 2010 edition) was conducted. All 109 addenda processed by ASHRAE in the creation of Standard 90.1-2010 from Standard 90.1-2007 were evaluated by DOE for their impact on energy efficiency. DOE preliminarily determined whether that addenda would have a positive, neutral, or negative impact on overall building efficiency.

  17. Qualitative risk assessment for the 100-HR-3 groundwater operable unit

    SciTech Connect (OSTI)

    Vukelich, S.E. [Golder Associates, Inc., Richland, WA (United States)

    1994-09-22T23:59:59.000Z

    This report provides the qualitative risk assessment for the 100-HR-3 operable unit on the Hanford Reservation. 100-HR-3 is a ground water unit. The purpose of the QRA at the 100-HR-3 operable unit is to focus on a predefined set of human and environmental exposure scenarios in order to provides sufficient information that will assist the Tri-Party signatories (Washington State Department of Ecology, EPA and US DOE) in making defensible decisions on the necessity of Interim Remedial Measures. Frequent- and occasional-use exposure scenarios are evaluated in the human health risk assessment to provide bounding estimates of risk. The ecological risk assessment consists of an evaluation of the risks to riparian and aquatic receptors which live in or near the Columbia River.

  18. Interim qualitative risk assessment for an LNG refueling station and review of relevant safety issues

    SciTech Connect (OSTI)

    Siu, N.; Herring, S.; Cadwallader, L.; Reece, W.; Byers, J.

    1997-07-01T23:59:59.000Z

    This report is a qualitative assessment of the public and worker risk involved with the operation of a liquefied natural (LNG) vehicle refueling facility. This study includes facility maintenance and operations, tanker truck delivers and end-use vehicle fueling; it does not treat the risks of LNG vehicles on roadways. Accident initiating events are identified by using a Master Logic Diagram, a Failure Modes and Effects analysis and historical operating experiences. The event trees were drawn to depict possible sequences of mitigating events following the initiating events. The phenomenology of LNG and other vehicle fuels is discussed to characterize the hazard posed by LNG usage. Based on the risk modeling and analysis, recommendations are given to improve the safety of LNG refueling stations in the areas of procedures and training, station design, and the dissemination of best practice information throughout the LNG community.

  19. Qualitative Risk Assessment for an LNG Refueling Station and Review of Relevant Safety Issues

    SciTech Connect (OSTI)

    Siu, N.; Herring, J.S.; Cadwallader, L.; Reece, W.; Byers, J.

    1998-02-01T23:59:59.000Z

    This report is a qualitative assessment of the public and worker risk involved with the operation of a liquefied natural gas (LNG) vehicle refueling facility. This study includes facility maintenance and operations, tank truck deliveries, and end-use vehicle fueling; it does not treat the risks of LNG vehicles on roadways. Accident initiating events are identified by using a Master Logic Diagram, a Failure Modes and Effects Analysis, and historical operating experiences. The event trees were drawn to depict possible sequences of mitigating events following the initiating events. The phenomenology of LNG and other vehicle fuels is discussed to characterize the hazard posed by LNG usage. Based on the risk modeling and analysis, recommendations are given to improve the safety of LNG refueling stations in the areas of procedures and training, station design, and the dissemination of ``best practice`` information throughout the LNG community.

  20. ANSI/ASHRAE/IESNA Standard 90.1-2007 Final Qualitative Determination

    SciTech Connect (OSTI)

    Halverson, Mark A.; Liu, Bing; Richman, Eric E.; Winiarski, David W.

    2011-01-01T23:59:59.000Z

    A final qualitative analysis of all addenda to American National Standards Institute (ANSI)/American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE)/Illuminating Engineering Society of North America (IESNA) Standard 90.1-2004 that were included in ANSI/ASHRAE/IESNA Standard 90.1-2007 was conducted. All 44 addenda processed by ASHRAE in the creation of Standard 90.1-2007 from Standard 90.1-2004 were evaluated by the U.S. Department of Energy (DOE) for their impact on energy efficiency. DOE preliminarily determined whether that addenda would have a positive, neutral, or negative impact on overall building efficiency. Table S.1 shows the number of positive and negative changes for each section of Standard 90.1.

  1. ANSI/ASHRAE/IES Standard 90.1-2013 Preliminary Determination: Qualitative Analysis

    SciTech Connect (OSTI)

    Halverson, Mark A.; Hart, Reid; Athalye, Rahul A.; Rosenberg, Michael I.; Richman, Eric E.; Winiarski, David W.

    2014-03-01T23:59:59.000Z

    Section 304(b) of the Energy Conservation and Production Act (ECPA), as amended, requires the Secretary of Energy to make a determination each time a revised version of ASHRAE Standard 90.1 is published with respect to whether the revised standard would improve energy efficiency in commercial buildings. When the U.S. Department of Energy (DOE) issues an affirmative determination on Standard 90.1, states are statutorily required to certify within two years that they have reviewed and updated the commercial provisions of their building energy code, with respect to energy efficiency, to meet or exceed the revised standard. This report provides a preliminary qualitative analysis of all addenda to ANSI/ASHRAE/IES Standard 90.1-2010 (referred to as Standard 90.1-2010 or 2010 edition) that were included in ANSI/ASHRAE/IES Standard 90.1-2013 (referred to as Standard 90.1-2013 or 2013 edition).

  2. Error analysis due to laser beams misalignment of a double laser self-mixing velocimeter

    SciTech Connect (OSTI)

    Tanios, Bendy; Bony, Francis; Bosch, Thierry [CNRS, LAAS, 7 avenue du colonel Roche, F-31400 Toulouse (France) and Univ de Toulouse, UPS, LAAS, F-31400 Toulouse (France); CNRS, LAAS, 7 avenue du colonel Roche, F-31400 Toulouse, France and Univ de Toulouse, INP, LAAS, F-31400 Toulouse (France)

    2012-06-13T23:59:59.000Z

    In this paper, we present a self-mixing double-head laser diode velocimeter. Analyzes are performed to evaluate the sensitivity to misalignment for this setup and calculate errors due to this misalignment. The analyses and calculations are verified by experimental results.

  3. Electrical Detection of Spin Pumping due to the Precessing Magnetization of a Single Ferromagnet

    E-Print Network [OSTI]

    van der Wal, Caspar H.

    Electrical Detection of Spin Pumping due to the Precessing Magnetization of a Single Ferromagnet M of spin pumping, using a lateral normal-metal/ferromagnet/normal- metal device, where a single ferromagnet in ferromagnetic resonance pumps spin-polarized electrons into the normal metal, resulting in spin accumulation

  4. Temporal-spatial modeling of electron density enhancement due to successive lightning strokes

    E-Print Network [OSTI]

    Otago, University of

    (FDTD) model that describes the effect of lightning electromagnetic pulses (EMP) on the ionosphere. Each The electromagnetic pulse (EMP) from lightning has been shown to modify conductivity and electron density in the lower successive EMP pulse interacts with a modified background ionosphere due to the previous pulses, resulting

  5. SUNRISE: INSTRUMENT, MISSION, DATA, AND FIRST RESULTS

    SciTech Connect (OSTI)

    Solanki, S. K.; Barthol, P.; Danilovic, S.; Feller, A.; Gandorfer, A.; Hirzberger, J.; Riethmueller, T. L.; Schuessler, M. [Max-Planck-Institut fuer Sonnensystemforschung, Max-Planck-Str. 2, 37191 Katlenburg-Lindau (Germany); Bonet, J. A.; Pillet, V. MartInez [Instituto de Astrofisica de Canarias, C/Via Lactea s/n, 38200 La Laguna, Tenerife (Spain); Del Toro Iniesta, J. C. [Instituto de Astrofisica de AndalucIa (CSIC), Apdo. de Correos 3004, E-18080, Granada (Spain); Domingo, V.; Palacios, J. [Grupo de AstronomIa y Ciencias del Espacio, Universidad de Valencia, E-46980, Paterna, Valencia (Spain); Knoelker, M. [High Altitude Observatory, National Center for Atmospheric Research, P.O. Box 3000, Boulder, CO 80307-3000 (United States); Gonzalez, N. Bello; Berkefeld, T.; Franz, M.; Schmidt, W. [Kiepenheuer-Institut fuer Sonnenphysik, Schoeneckstr. 6, 79104 Freiburg (Germany); Title, A. M., E-mail: solanki@mps.mpg.d [Lockheed-Martin Solar and Astrophysical Lab., Palo Alto, CA 94304 (United States)

    2010-11-10T23:59:59.000Z

    The SUNRISE balloon-borne solar observatory consists of a 1 m aperture Gregory telescope, a UV filter imager, an imaging vector polarimeter, an image stabilization system, and further infrastructure. The first science flight of SUNRISE yielded high-quality data that revealed the structure, dynamics, and evolution of solar convection, oscillations, and magnetic fields at a resolution of around 100 km in the quiet Sun. After a brief description of instruments and data, the first qualitative results are presented. In contrast to earlier observations, we clearly see granulation at 214 nm. Images in Ca II H display narrow, short-lived dark intergranular lanes between the bright edges of granules. The very small-scale, mixed-polarity internetwork fields are found to be highly dynamic. A significant increase in detectable magnetic flux is found after phase-diversity-related reconstruction of polarization maps, indicating that the polarities are mixed right down to the spatial resolution limit and probably beyond.

  6. Dissolved oxygen in the River Mesta (Bulgaria): a case study for qualitative modelling of sustainable development

    E-Print Network [OSTI]

    Bailey-Kellogg, Chris

    agriculture and forestry; increasing energy production from hydropower; construction of new roads and streets of DO due to diffusion from the atmosphere. Normally there is a dynamic equilibrium between inputs

  7. Transient heat transfer in helium II due to a sudden vacuum break

    SciTech Connect (OSTI)

    Bosque, Ernesto S.; Dhuley, Ram C.; Van Sciver, Steven W. [National High Magnetic Field Laboratory, Tallahassee, FL 32310, USA and FAMU-FSU College of Engineering, Tallahassee, FL 32310 (United States)

    2014-01-29T23:59:59.000Z

    To ensure future cryogenic devices meet safety and operational specifications, significant value is gained from a developed understanding of the transient heat fluxes that result from failure of an insulating vacuum jacket around a helium II (He II)-cooled device. A novel, one-dimensional experiment is successfully performed examining the phenomena immediately following a vacuum rupture onto a cryosurface. In the experiment, a fast-opening (?10 ms) valve isolates a rigid container of ultra high purity nitrogen (N{sub 2}) gas kept at room temperature and adjustable pressure from a vertically oriented, highly evacuated (?10{sup ?3} Pa) tube roughly 1 m in length. The bottom of the evacuated tube is sealed via a 2.54 mm thick copper disk, whose bottom surface is in intimate contact with an open column of He II (?1.8 K). The evacuated tube, disk, and He II column share a diameter of 24 mm. Opening the valve results in a vacuum rupture. N{sub 2} gas is immediately drawn into the evacuated space and cryopumped onto the disk as a growing layer of solid cryodeposit. Various coupled transient heat transfer processes proceed as the internal energy of the warm gas is transferred through the growing layer of solid N{sub 2}, through the copper disk, and into the He II column. This work examines the qualitative nature of these transient phenomena and the magnitude of the heat fluxes present through each of the series of thermal resistances.

  8. Eddy heat fluxes at Drake Passage due to mesoscale motions

    E-Print Network [OSTI]

    Rojas Recabal, Ricardo Luis

    1982-01-01T23:59:59.000Z

    EDDY HEAT FLUKES AT DRAKE PASSAGE DUE TO MESOSCALE MOTIONS A Thesis by RICARDO LUIS ROJAS RECABAL Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE May... 1982 Major Subject: Oceanography EDDY HEAT FLUXES AT DRAKE PASSAGE DUE TO MESOSCALE NOTIONS A Thesis by RICARDO LUIS ROJAS RECABAL Approved as to style and content by: was )W-~ Member em er May 1982 ABSTRACT Eddy Heat Fluxes at Drake Passage...

  9. Atomic displacements due to spinspin repulsion in conjugated alternant hydrocarbons

    E-Print Network [OSTI]

    Benzi, Michele

    Atomic displacements due to spin­spin repulsion in conjugated alternant hydrocarbons Ernesto-induced atomic displacements in conjugated alt- ernant hydrocarbons. It appears to be responsible alternant hydrocarbons (CAHs) have played a fun- damental role in the development of theoretical chemistry

  10. Heliospheric MeV energization due to resonant interaction

    E-Print Network [OSTI]

    California at Berkeley, University of

    Heliospheric MeV energization due to resonant interaction Ilan Roth1 Space Sciences Laboratory energetic heavy ions during active solar periods are of major importance with respect to the proper. Such processes may violate one or more invariants while preserving the other(s). Solar MeV ions are frequently

  11. Oil and Gas Production Optimization; Lost Potential due to Uncertainty

    E-Print Network [OSTI]

    Johansen, Tor Arne

    Oil and Gas Production Optimization; Lost Potential due to Uncertainty Steinar M. Elgsaeter Olav.ntnu.no) Abstract: The information content in measurements of offshore oil and gas production is often low, and when in the context of offshore oil and gas fields, can be considered the total output of production wells, a mass

  12. Parton energy loss due to synchrotron-like gluon emission

    E-Print Network [OSTI]

    B. G. Zakharov

    2008-09-03T23:59:59.000Z

    We develop a quasiclassical theory of the synchrotron-like gluon radiation. Our calculations show that the parton energy loss due to the synchrotron gluon emission may be important in the jet quenching phenomenon if the plasma instabilities generate a sufficiently strong chromomagnetic field. Our gluon spectrum disagrees with that obtained by Shuryak and Zahed within the Schwinger's proper time method.

  13. BOUSSINESQ MODELING OF SURFACE WAVES DUE TO UNDERWATER LANDSLIDES

    E-Print Network [OSTI]

    topography, and the equations of motion for the landslide and surface waves are solved simultaneously. Introduction Surface waves originating from sudden perturbations of the bottom topography are often termedBOUSSINESQ MODELING OF SURFACE WAVES DUE TO UNDERWATER LANDSLIDES DENYS DUTYKH AND HENRIK KALISCH

  14. BOUSSINESQ MODELING OF SURFACE WAVES DUE TO UNDERWATER LANDSLIDES

    E-Print Network [OSTI]

    topography, and the equations of motion for the landslide and surface waves are solved simultaneouslyBOUSSINESQ MODELING OF SURFACE WAVES DUE TO UNDERWATER LANDSLIDES DENYS DUTYKH AND HENRIK KALISCH Abstract. Consideration is given to the influence of an underwater landslide on waves at the surface

  15. BOUSSINESQ MODELING OF SURFACE WAVES DUE TO UNDERWATER LANDSLIDES

    E-Print Network [OSTI]

    topography, and the equations of motion for the landslide and surface waves are solved simultaneouslyBOUSSINESQ MODELING OF SURFACE WAVES DUE TO UNDERWATER LANDSLIDES DENYS DUTYKH # AND HENRIK KALISCH Abstract. Consideration is given to the influence of an underwater landslide on waves at the surface

  16. Cluster Report or Survey Description Date due to IEA Responsible

    E-Print Network [OSTI]

    Fernandez, Eduardo

    Cluster Report or Survey Description Date due to IEA Responsible person(s) Comments Reports IEA will activate and distribute survey in August 2011 Summer Activity Report Faculty activity report for summer, 2012 December 20, 2012 Academic Department Heads By October 8, 2012, data is provided by IEA

  17. Plastic strain due to twinning in austenitic TWIP steels

    E-Print Network [OSTI]

    Cambridge, University of

    Plastic strain due to twinning in austenitic TWIP steels B. Qin and H. K. D. H. Bhadeshia* Twinning induced plasticity steels are austenitic alloys in which mechanical twinning is a prominent deformation, Twinning, Twinning induced plasticity, Automobiles Introduction Mechanical twinning is a plastic

  18. Left Lateralized Enhancement of Orofacial Somatosensory Processing Due

    E-Print Network [OSTI]

    JSLHR Supplement Left Lateralized Enhancement of Orofacial Somatosensory Processing Due to Speech associated with speech articulatory movements affects the perception of speech sounds and vice versa, suggesting an intimate linkage between speech production and perception systems. However, it is unclear which

  19. Nonvolatile memory disturbs due to gate and junction leakage currents

    E-Print Network [OSTI]

    Schroder, Dieter K.

    ) from traps within the gate oxides. Such low gate leakage currents can lead to sufficient charge; accepted 10 September 2002 Abstract We address disturbs due to gate oxide and junction leakage currents in floating gate nonvolatile memories (NVM). The junction leakage is important, because the gate oxide current

  20. Costs of Land Subsidence Due to Groundwater Withdrawal

    E-Print Network [OSTI]

    Warren, J. P.; Jones, L. L.; Griffin, W. L.; Lacewell, R. D.

    total. Of the $109.6 million, $53.2 million were incurred in 1973, principally due to a six foot tide. Probability of the occurrence of a six foot tide in any one year is 20 percent. Given five additional feet of subsidence in the study area...

  1. Availability Impact on GPS Aviation due to Strong

    E-Print Network [OSTI]

    Stanford University

    /3/941774. Refereeing of this contribution was handled by M. Braasch. This work was supported by the Federal Aviation Administration (FAA) CRDA 08-G-007. The opinions discussed here are those of the authors and do not necessarilyAvailability Impact on GPS Aviation due to Strong Ionospheric Scintillation JIWON SEO TODD WALTER

  2. Four-nucleon potential due to exchange of pions

    SciTech Connect (OSTI)

    Robilotta, M.R.

    1985-03-01T23:59:59.000Z

    A four-body force due to the exchange of pions has been derived by means of It includes effects corresponding to pion-pion scattering, pion production, and pion-nucleon rescattering. The strength parameters of this four-body potential are typically one order of magnitude smaller than those of the two-pion-exchange three-body force.

  3. Math 110 Homework Assignment 21 due date: Mar. 18, 2013

    E-Print Network [OSTI]

    Roth, Mike

    Math 110 Homework Assignment 21 due date: Mar. 18, 2013 1. Consider a fish population with adult fish and young fish where the transition from one year's population to the next is 0.7 0.2 3 0 representing a 70% adult survival rate from year to year, a 20% survival rate for young fish, and the fact

  4. Cosmological electromagnetic fields due to gravitational wave perturbations Mattias Marklund*

    E-Print Network [OSTI]

    Dunsby, Peter

    show that this coupling leads to an initial pulse of electromagnetic waves whose width and amplitude to produce a pulse of gravitationally induced electromagnetic waves. In particular, because of the differentCosmological electromagnetic fields due to gravitational wave perturbations Mattias Marklund

  5. Compressed Gas Cylinder Safety I. Background. Due to the nature

    E-Print Network [OSTI]

    Suzuki, Masatsugu

    Compressed Gas Cylinder Safety I. Background. Due to the nature of gas cylinders hazards of a ruptured cylinder. There are almost 200 different types of materials in gas cylinders, there are several general procedures to follow for safe storage and handling of a compressed gas cylinder: II

  6. atmospheric absorption due: Topics by E-print Network

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

    atmospheric absorption due First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 The thermal infrared spectra...

  7. air pollution due: Topics by E-print Network

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

    air pollution due First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Quantifying precipitation suppression...

  8. From 9-IM Topological Operators to Qualitative Spatial Relations using 3D Selective Nef Complexes and Logic Rules for bodies

    E-Print Network [OSTI]

    Boyer, Edmond

    From 9-IM Topological Operators to Qualitative Spatial Relations using 3D Selective Nef Complexes.benhmida, boochs}@geoinform.fh-mainz.de Keywords: Topological relations ; 9-IM ; Selective Nef Complex ; Ontology Complexes Nef Polyhedra structure generated from standard Polyhedron. The Selective Nef Complexes is a data

  9. AN ASPECT OF A DIDACTICAL PATH FOR APPROACHING THE CONCEPT OF FUNCTION: THE QUALITATIVE INTERPRETATION OF A GRAPH

    E-Print Network [OSTI]

    Spagnolo, Filippo

    156 AN ASPECT OF A DIDACTICAL PATH FOR APPROACHING THE CONCEPT OF FUNCTION: THE QUALITATIVE uncertainties and difficulties when teaching it (Even, 1993). At the middle school level, it seems didactically and their representations. From a didactical point of view, this sets the problem of how to lead the student to put

  10. Abstract--Robust control has long been the purview of quanti-tative linear control techniques, while qualitative, symbolic

    E-Print Network [OSTI]

    Linder, Stephen

    Abstract--Robust control has long been the purview of quanti- tative linear control techniques, while qualitative, symbolic control has been deemed more suitable to obtaining complex control objectives that require only low output precision. The intelligent techniques of Fuzzy control have, however

  11. Qualitative analysis of Zircaloy-4 cladding air degradation in O2-N2 mixtures at high temperature

    E-Print Network [OSTI]

    Boyer, Edmond

    . Thermogravimetry, optical microscopy, scanning electron microscopy and energy dispersive X-ray spectrometry1 Qualitative analysis of Zircaloy-4 cladding air degradation in O2-N2 mixtures at high temperature Email: M. Lasserre (marina.lasserre@irsn.fr) Keywords: Zircaloy-4; thermogravimetry; high temperature

  12. Landscape architects, working along with scientists and consultants, combine science with other more qualitative planning and design

    E-Print Network [OSTI]

    Schladow, S. Geoffrey

    energy potentials can include incorporating passive solar, small-scale hydrologic, and wind. The latest more qualitative planning and design processes and methods. They design "artful" places for people of landscape design include the use of geology and soil science for sensitive land planning. Soil erosion

  13. Qualitative analysis of Pb liquid sample using laser-induced breakdown spectroscopy (LIBS)

    SciTech Connect (OSTI)

    Suyanto, Hery; Rupiasih, Ni Nyoman; Winardi, T. B. [Physics Department, Faculty of Mathematics and Natural Sciences, Udayana University. Kampus Bukit Jimbaran, Badung, Bali, Indonesia 80361 (Indonesia)] [Physics Department, Faculty of Mathematics and Natural Sciences, Udayana University. Kampus Bukit Jimbaran, Badung, Bali, Indonesia 80361 (Indonesia); Manurung, M. [Chemistry Dept, Faculty of Mathematics and Natural Sciences, Udayana University. Kampus Bukit Jimbaran, Badung, Bali, Indonesia 80361 (Indonesia)] [Chemistry Dept, Faculty of Mathematics and Natural Sciences, Udayana University. Kampus Bukit Jimbaran, Badung, Bali, Indonesia 80361 (Indonesia); Kurniawan, K. H. [Research Center of Maju Makmur Mandiri Foundation, 40 Srengseng Raya, Kembangan, Jakarta Barat 11630 (Indonesia)] [Research Center of Maju Makmur Mandiri Foundation, 40 Srengseng Raya, Kembangan, Jakarta Barat 11630 (Indonesia)

    2013-09-03T23:59:59.000Z

    Qualitative analysis of liquid sample containing 1,000 ppm of Pb was performed by using LIBS technique. In order to avoid splashing off of the liquid sample during laser irradiation, a sample pretreatment was done, namely the liquid sample was absorbed by using commercial available stomach medicine. Two kinds of absorbent materials were chosen in this experiment, first containing 125 mg activated carbon and second 600 mg activated attapulgite. These absorbent materials were used since carbon sample gives better absorption of infrared laser irradiation used in this experiment. In order to characterize the absorption process, three treatments were conducted in this experiment; first, without heating the sample but varying the absorption time before laser irradiation; second by varying the heating temperature after certain time of absorption process and third by varying the temperature only. The maximum emission intensity of Pb I 405.7 nm was found in the second treatment of heating the sample till 85°C after 30 minutes absorption of the liquid sample in both absorbent materials.

  14. Multiphase modeling and qualitative analysis of the growth of tumor cords

    E-Print Network [OSTI]

    Andrea Tosin

    2009-06-27T23:59:59.000Z

    In this paper a macroscopic model of tumor cord growth is developed, relying on the mathematical theory of deformable porous media. Tumor is modeled as a saturated mixture of proliferating cells, extracellular fluid and extracellular matrix, that occupies a spatial region close to a blood vessel whence cells get the nutrient needed for their vital functions. Growth of tumor cells takes place within a healthy host tissue, which is in turn modeled as a saturated mixture of non-proliferating cells. Interactions between these two regions are accounted for as an essential mechanism for the growth of the tumor mass. By weakening the role of the extracellular matrix, which is regarded as a rigid non-remodeling scaffold, a system of two partial differential equations is derived, describing the evolution of the cell volume ratio coupled to the dynamics of the nutrient, whose higher and lower concentration levels determine proliferation or death of tumor cells, respectively. Numerical simulations of a reference two-dimensional problem are shown and commented, and a qualitative mathematical analysis of some of its key issues is proposed.

  15. Revisiting the cosmological bias due to local gravitational redshifts

    E-Print Network [OSTI]

    Huang, Zhiqi

    2015-01-01T23:59:59.000Z

    A recent article by Wojtak {\\it et al} (arXiv:1504.00178) pointed out that the local gravitational redshift, despite its smallness ($\\sim 10^{-5}$), can have a noticeable ($\\sim 1\\%$) systematic effect on our cosmological parameter measurements. The authors studied a few extended cosmological models (non-flat $\\Lambda$CDM, $w$CDM, and $w_0$-$w_a$CDM) with a mock supernova dataset. We repeat this calculation and find that the $\\sim 1\\%$ biases are due to strong degeneracy between cosmological parameters. When Cosmic Microwave Background (CMB) data are added to break the degeneracy, the biases due to local gravitational redshift are negligible ($\\lesssim 0.1 \\sigma$).

  16. EE 511 Problem Set 7 Due on 16 Nov 2007

    E-Print Network [OSTI]

    Bhashyam, Srikrishna

    is 11 MHz, sketch SXI (f), the power spectral density of the in-phase component of the band-pass process), the cross power spectral density of the in-phase and quadrature components of the band-pass processEE 511 Problem Set 7 Due on 16 Nov 2007 1. Let ^Xt be the Hilbert transform of the W.S.S. random

  17. To be published in In Proceedings of ACM Eye Tracking Research & Applications Symposium, Austin, TX, 2010 Qualitative and Quantitative Scoring and Evaluation of the Eye Movement

    E-Print Network [OSTI]

    Oleg, Komogortsev - Department of Computer Science, Texas State University

    To be published in In Proceedings of ACM Eye Tracking Research & Applications Symposium, Austin, TX, 2010 Qualitative and Quantitative Scoring and Evaluation of the Eye Movement Classification Algorithms presents a set of qualitative and quantitative scores designed to assess performance of any eye movement

  18. There is an increasing order in digitized technology. This increasing order requires high qualitative document management system which can be used in secure fashion especially for organization with

    E-Print Network [OSTI]

    qualitative document management system which can be used in secure fashion especially for organization with different branches and different location. In this paper we propose a qualitative document management. The proposed framework provides the necessary options for creating an effective document management system

  19. Premio Perini Navi S.p.A. IL COMITATO LEONARDO ITALIAN QUALIT COMMITTE HA

    E-Print Network [OSTI]

    Segatti, Antonio

    1 Premio Perini Navi S.p.A. IL COMITATO LEONARDO ­ ITALIAN QUALITÀ COMMITTE ­ HA DELIBERATO DI DELEGATO DI PERINI NAVI SPA. - ANNO 2011 - "Progetto di un natante ad uso tender per un'imbarcazione a vela dalla direzione della Perini Navi S.p.A. FINALITÀ: Premiare i due migliori progetti relativi ad un

  20. Plans, Implementation, and Results

    Broader source: Energy.gov [DOE]

    About the Weatherization and Intergovernmental Programs Office (WIPO) including information on plans, implementations, and results.

  1. Evaluation of main feedwater line instability due to the sudden opening of flow control valve

    SciTech Connect (OSTI)

    Kathiresan, R.M.; Huang, S.M.; Tonet, N.

    1983-11-01T23:59:59.000Z

    Feedwater piping in a nuclear power plant can be subjected to transient forces due to the sudden opening of flow control valves. A numerical analysis of the valve transient problem is performed to simulate an incident that occurred at an operating facility. The results of the investigation of hydrodynamic loads on the feedwater lines and the dynamic structural response due to the aforementioned event are presented. The computer code WAVENET is employed to calculate the fluid transient response and hydrodynamic loads. The NUPIPE finite element computer program is used to calculate the structural response of the feedwater piping and piping support for these transient hydrodynamic loads. Based on the analysis, potential problem areas in the feedwater pipeline in terms of both support loads and stresses are identified. The results obtained successfully verify the mathematical modeling procedure of the failure of the pipe supports and snubbers.

  2. Thermal neutron flux perturbation due to indium foils in water

    E-Print Network [OSTI]

    Stinson, Ronald Calvin

    1961-01-01T23:59:59.000Z

    of MASTER OF SCIENCE August, i 96I Major Subject: Nuclear Engineering THERMAL NEUTRON FLUX PERTURBATION DUE TO INDIUM FOILS IN WATER A Thesis by Ronald C. Stinson, Jr. Approved as to style and content by: Chai man of Committee Head of Department.... 2. Tittle, C. N. , Nucleonics 8, (6), 5 (1951); Ibid 9 (1), 60 (1951). 3. Skyrme, T, H. R. , "Reduction in Neutron Density Caused by an Absorbing Disc. " MS-91 (N. D. ) 4. Dalton, G. R. and Osborn, R. K. , Nuclear Science and En ineerin 9, 19...

  3. Plasma Frequency Shift Due to a Slowly Rotating Compact Star

    E-Print Network [OSTI]

    Babur M. Mirza; Hamid Saleem

    2005-05-10T23:59:59.000Z

    We investigate the effects of a slowly rotating compact gravitational source on electron oscillations in a homogeneous electrically neutral plasma in the absence of an external electric or magnetic field. Neglecting the random thermal motion of the electrons we assume the gravitoelectromagnetic approximation to the general theory of relativity for the gravitational field. It is shown that there is a shift in the plasma frequency and hence in the dielectric constant of the plasma due to the gravitomagnetic force. We also give estimates for the difference in the frequency of radially transmitted electromagnetic signals for typical compact star candidates.

  4. Due West, South Carolina: Energy Resources | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualPropertyd8c-a9ae-f8521cbb8489 No revision| Open EnergyProjectDraper, Utah:DuPageEmirates:Due

  5. Hazard analysis results report

    SciTech Connect (OSTI)

    Niemi, B.J., Westinghouse Hanford

    1996-09-30T23:59:59.000Z

    This document describes and defines the Hazard Analysis Results for the Tank Waste Remediation System Final Safety Analysis Report.

  6. Preliminary Results on Luminaire Designs for Hybrid Solar Lighting Systems

    SciTech Connect (OSTI)

    Earl, D.D.

    2001-06-15T23:59:59.000Z

    We report on the design of two hybrid lighting luminaires that blend light from a fiber optic end-emitted solar source with electric T8 fluorescent lamps. Both designs involve the retrofit of a commercially-available recessed fluorescent luminaire with minimal reductions in the original luminaire's optical efficiency. Two methods for high-angle dispersion of fiber optic end-emitted solar light are described and the resulting spatial intensity distributions, simulated using ZEMAX, are compared with standard cylindrical fluorescent tubes. Differences in spatial intensity distribution are qualitatively characterized and potential design improvements discussed.

  7. Seismic attenuation due to wave-induced flow

    SciTech Connect (OSTI)

    Pride, S.R.; Berryman, J.G.; Harris, J.M.

    2003-10-09T23:59:59.000Z

    Analytical expressions for three P-wave attenuation mechanisms in sedimentary rocks are given a unified theoretical framework. Two of the models concern wave-induced flow due to heterogeneity in the elastic moduli at mesoscopic scales (scales greater than grain sizes but smaller than wavelengths). In the first model, the heterogeneity is due to lithological variations (e.g., mixtures of sands and clays) with a single fluid saturating all the pores. In the second model, a single uniform lithology is saturated in mesoscopic ''patches'' by two immiscible fluids (e.g., air and water). In the third model, the heterogeneity is at ''microscopic'' grain scales (broken grain contacts and/or micro-cracks in the grains) and the associated fluid response corresponds to ''squirt flow''. The model of squirt flow derived here reduces to proper limits as any of the fluid bulk modulus, crack porosity, and/or frequency is reduced to zero. It is shown that squirt flow is incapable of explaining the measured level of loss (10{sup -2} < Q{sup -1} < 10{sup -1}) within the seismic band of frequencies (1 to 10{sup 4} Hz); however, either of the two mesoscopic scale models easily produce enough attenuation to explain the field data.

  8. Geothermal: Search Results

    Office of Scientific and Technical Information (OSTI)

    Search Results Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us HomeBasic Search About Publications Advanced Search New Hot Docs News Related Links The...

  9. User Survey Results | EMSL

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

    have accessed computing resources during the prior year. The results of the most recent survey are posted here with management responses to concerns or issues identified by our...

  10. Excitation of flow instabilities due to nonlinear scale invariance

    SciTech Connect (OSTI)

    Prasad Datta, Dhurjati, E-mail: dp-datta@yahoo.com [Department of Mathematics, University of North Bengal, Siliguri, West Bengal 734013 (India); Sen, Sudip [National Institute of Aerospace (NASA-LaRC), 100 Exploration Way, Hampton, Virginia 23666 (United States); College of William and Mary, Williamsburg, Virginia 23187 (United States)

    2014-05-15T23:59:59.000Z

    A novel route to instabilities and turbulence in fluid and plasma flows is presented in kinetic Vlasov-Maxwell model. New kind of flow instabilities is shown to arise due to the availability of new kinetic energy sources which are absent in conventional treatments. The present approach is based on a scale invariant nonlinear analytic formalism developed to address irregular motions on a chaotic attractor or in turbulence in a more coherent manner. We have studied two specific applications of this turbulence generating mechanism. The warm plasma Langmuir wave dispersion relation is shown to become unstable in the presence of these multifractal measures. In the second application, these multifractal measures are shown to induce naturally non-Gaussian, i.e., a stretched, Gaussian distribution and anomalous transport for tracer particles from the turbulent advection-diffusion transport equation in a Vlasov plasma flow.

  11. Optical analog of Rabi oscillation suppression due to atomic motion

    E-Print Network [OSTI]

    J. G. Muga; B. Navarro

    2005-05-13T23:59:59.000Z

    The Rabi oscillations of a two-level atom illuminated by a laser on resonance with the atomic transition may be suppressed by the atomic motion through averaging or filtering mechanisms. The optical analogs of these velocity effects are described. The two atomic levels correspond in the optical analogy to orthogonal polarizations of light and the Rabi oscillations to polarization oscillations in a medium which is optically active, naturally or due to a magnetic field. In the later case, the two orthogonal polarizations could be selected by choosing the orientation of the magnetic field, and one of them be filtered out. It is argued that the time-dependent optical polarization oscillations or their suppression are observable with current technology.

  12. Comments on Landau damping due to synchrotron frequency spread

    SciTech Connect (OSTI)

    Ng, K.Y.; /Fermilab

    2005-01-01T23:59:59.000Z

    An inductive/space-charge impedance shifts the synchrotron frequency downwards above/below transition, but it is often said that the coherent synchrotron frequency of the bunch is not shifted in the rigid-dipole mode. On the other hand, the incoherent synchrotron frequency due to the sinusoidal rf always spreads in the downward direction. This spread will therefore not be able to cover the coherent synchrotron frequency, implying that there will not be any Landau damping no matter how large the frequency spread is. By studying the dispersion relation, it is shown that the above argument is incorrect, and there will be Landau damping if there is sufficient frequency spread. The main reason is that the coherent frequency of the rigid-dipole mode will no longer remain unshifted in the presence of a synchrotron frequency spread.

  13. East-west faults due to planetary contraction

    E-Print Network [OSTI]

    Beuthe, Mikael

    2010-01-01T23:59:59.000Z

    Contraction, expansion and despinning have been common in the past evolution of Solar System bodies. These processes deform the lithosphere until it breaks along faults. The type and orientation of faults are usually determined under the assumption of a constant lithospheric thickness, but lithospheric thinning can occur at the equator or at the poles due either to latitudinal variation in solar insolation or to localized tidal dissipation. Using thin elastic shells with variable thickness, I show that the equatorial thinning of the lithosphere transforms the homogeneous and isotropic fault pattern caused by contraction/expansion into a pattern of faults striking east-west, preferably formed in the equatorial region. By contrast, lithospheric thickness variations only weakly affect the despinning faulting pattern consisting of equatorial strike-slip faults and polar normal faults. If contraction is added to despinning, the despinning pattern first shifts to thrust faults striking north-south and then to thrus...

  14. Precursor detonation wave development in ANFO due to aluminum confinement

    SciTech Connect (OSTI)

    Jackson, Scott I [Los Alamos National Laboratory; Klyanda, Charles B [Los Alamos National Laboratory; Short, Mark [Los Alamos National Laboratory

    2010-01-01T23:59:59.000Z

    Detonations in explosive mixtures of ammonium-nitrate-fuel-oil (ANFO) confined by aluminum allow for transport of detonation energy ahead of the detonation front due to the aluminum sound speed exceeding the detonation velocity. The net effect of this energy transport on the detonation is unclear. It could enhance the detonation by precompressing the explosive near the wall. Alternatively, it could decrease the explosive performance by crushing porosity required for initiation by shock compression or destroying confinement ahead of the detonation. At present, these phenomena are not well understood. But with slowly detonating, non-ideal high explosive (NIHE) systems becoming increasing prevalent, proper understanding and prediction of the performance of these metal-confined NIHE systems is desirable. Experiments are discussed that measured the effect of this ANFO detonation energy transported upstream of the front by a 76-mm-inner-diameter aluminum confining tube. Detonation velocity, detonation-front shape, and aluminum response are recorded as a function of confiner wall thickness and length. Detonation shape profiles display little curvature near the confining surface, which is attributed to energy transported upstream modifying the flow. Average detonation velocities were seen to increase with increasing confiner thickness, while wavefront curvature decreased due to the stiffer, subsonic confinement. Significant radial sidewall tube motion was observed immediately ahead of the detonation. Axial motion was also detected, which interfered with the front shape measurements in some cases. It was concluded that the confiner was able to transport energy ahead of the detonation and that this transport has a definite effect on the detonation by modifying its characteristic shape.

  15. On the same team? a qualitative study of female sportswriters' attitudes on covering women's athletics

    E-Print Network [OSTI]

    Butler, Bryan Christopher

    2008-10-10T23:59:59.000Z

    of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Approved by: Chair of Committee,Michael Sagas Committee Members,Gregg Bennett George Cunningham Arnold LeUnes Head of Department.... George Cunningham, Dr. Gregg Bennett, and Dr. Arnold LeUnes. Their guidance and patience improved this research as well as my future work. Thanks are also due to Vicki Michaelis, the president of the Association for Women in Sports Media, who helped me...

  16. Overview of ALICE results

    E-Print Network [OSTI]

    Kryshen, E L

    2013-01-01T23:59:59.000Z

    Selected ALICE results on the global event properties, particle spectra, azimuthal anisotropy, heavy flavour and quarkonium production in Pb-Pb collisions at sqrt(s_NN) = 2.76 TeV are presented. First results on p-Pb collisions at sqrt(s_NN) = 5.02 TeV are briefly reviewed.

  17. Diffraction Results from CDF

    SciTech Connect (OSTI)

    Goulianos, Konstantin

    2012-04-01T23:59:59.000Z

    We present final results by the CDF II collaboration on diffractive W and Z production, report on the status of ongoing analyses on diffractive dijet production and on rapidity gaps between jets, and briefly summarize results obtained on exclusive production pointing to their relevance to calibrating theoretical models used to predict exclusive Higgs-boson production at the LHC.

  18. Recent results from TRISTAN

    SciTech Connect (OSTI)

    Enomoto, Ryoji [National Laboratory for High Energy Physics, Ibaraki (Japan)

    1997-01-01T23:59:59.000Z

    TRISTAN results on {gamma}{gamma} physics from 1994 to 1995 are reviewed in this report. We have systematically investigated jet production, the {gamma}-structure function, and charm pair production in {gamma}{gamma} processes. The results are discussed, and future prospects are presented.

  19. Orbital precession due to central-force perturbations

    E-Print Network [OSTI]

    Gregory S. Adkins; Jordan McDonnell

    2007-02-02T23:59:59.000Z

    We calculate the precession of Keplerian orbits under the influence of arbitrary central-force perturbations. Our result is in the form of a one-dimensional integral that is straightforward to evaluate numerically. We demonstrate the effectiveness of our formula for the case of the Yukawa potential. We obtain analytic results for potentials of the form V(r) = \\alpha r^n and V(r) = \\alpha \\ln(r/\\lambda) in terms of the hypergeometric function {_2F_1} (1/2-n/2,1-n/2; 2; e^2), where e is the eccentricity. Our results reproduce the known general relativistic (n=-3), constant force (n=1), and cosmological constant (n=2) precession formulas. Planetary precessions are often used to constrain the sizes of hypothetical new weak forces--our results allow for more precise, and often stronger, constraints on such proposed new forces.

  20. Sensitivity and Scenario Results

    E-Print Network [OSTI]

    Yu, Winston

    Presents the results of various scenarios using models used to study water, climate, agriculture and the economy in Pakistan's Indus Basin, and discusses the policy and investment implications. The water allocations per ...

  1. Electroweak results from CDF

    SciTech Connect (OSTI)

    D. S. Waters

    2004-06-02T23:59:59.000Z

    Inclusive W and Z production cross-sections have been measured by CDF and certain electroweak parameters extracted with high precision from these measurements. New results on diboson production at the Tevatron are also presented.

  2. Recent MEG results

    E-Print Network [OSTI]

    G. Cavoto

    2010-12-09T23:59:59.000Z

    New results of a search for the ultra-rare decay $\\mu \\to e \\gamma$ by the MEG collaboration are reported in this contribution. The data were taken during 2009 and correspond to approximately 6.5 10$^{13}$ muon stopped on target. A maximum likelihood analysis sets an upper limit at 90\\% C.L. on the branching ratio, BF($\\mu \\to e \\gamma$) $< $1.5 10$^{-11}$. The results presented here are preliminary.

  3. SUPPRESSION OF DIELECTRONIC RECOMBINATION DUE TO FINITE DENSITY EFFECTS

    SciTech Connect (OSTI)

    Nikolic, D.; Gorczyca, T. W.; Korista, K. T. [Western Michigan University, Kalamazoo, MI (United States); Ferland, G. J. [University of Kentucky, Lexington, KY (United States); Badnell, N. R. [University of Strathclyde, Glasgow (United Kingdom)

    2013-05-01T23:59:59.000Z

    We have developed a general model for determining density-dependent effective dielectronic recombination (DR) rate coefficients in order to explore finite-density effects on the ionization balance of plasmas. Our model consists of multiplying by a suppression factor those highly-accurate total zero-density DR rate coefficients which have been produced from state-of-the-art theoretical calculations and which have been benchmarked by experiment. The suppression factor is based upon earlier detailed collision-radiative calculations which were made for a wide range of ions at various densities and temperatures, but used a simplified treatment of DR. A general suppression formula is then developed as a function of isoelectronic sequence, charge, density, and temperature. These density-dependent effective DR rate coefficients are then used in the plasma simulation code Cloudy to compute ionization balance curves for both collisionally ionized and photoionized plasmas at very low (n{sub e} = 1 cm{sup -3}) and finite (n{sub e} = 10{sup 10} cm{sup -3}) densities. We find that the denser case is significantly more ionized due to suppression of DR, warranting further studies of density effects on DR by detailed collisional-radiative calculations which utilize state-of-the-art partial DR rate coefficients. This is expected to impact the predictions of the ionization balance in denser cosmic gases such as those found in nova and supernova shells, accretion disks, and the broad emission line regions in active galactic nuclei.

  4. Light defection due to a charged, rotating body

    E-Print Network [OSTI]

    Sarani Chakraborty; A. K. Sen

    2014-06-05T23:59:59.000Z

    According to GTR and subsequent developments in the field, it is known that there are three factors namely mass, rotation and charge that can influence the space-time geometry. Accordingly, we discuss the effect of space-time geometry of a charged, rotating body on the motion of the light ray. We obtained the expression for equatorial defection of light due to such a body up to fourth order term. In our expression for defection angle it is clear that charge can influence the path of light ray. We used the null geodesic approach of light ray for our calculation. If we set the charge to zero our expression of bending angle gets reduced to the Kerr equatorial bending angle.If we set rotation to zero our expression reduces to Resinner-Nordstr$\\ddot{o}$m defection angle and if we set both charge and rotation to zero our expression reduces to Schwarzschild bending angle. However, we get non-zero bending angle for a hypothetical massless, rotating, charged body.

  5. Periodic fluctuations in deep water formation due to sea ice

    E-Print Network [OSTI]

    Raj Saha

    2015-02-21T23:59:59.000Z

    During the last ice age several quasi-periodic abrupt warming events took place. Known as Dansgaard-Oeschger (DO) events their effects were felt globally, although the North Atlantic experienced the largest temperature anomalies. Paleoclimate data shows that the fluctuations often occurred right after massive glacial meltwater releases in the North Atlantic and in bursts of three or four with progressively decreasing strengths. In this study a simple dynamical model of an overturning circulation and sea ice is developed with the goal of understanding the fundamental mechanisms that could have caused the DO events. Interaction between sea ice and the overturning circulation in the model produces self-sustained oscillations. Analysis and numerical experiments reveal that the insulating effect of sea ice causes the ocean to periodically vent out accumulated heat in the deep ocean into the atmosphere. Subjecting the model to idealized freshwater forcing mimicking Heinrich events causes modulation of the natural periodicity and produces burst patterns very similar to what is observed in temperature proxy data. Numerical experiments with the model also suggests that the characteristic period of 1,500 years is due to the geometry, or the effective heat capacity, of the ocean that comes under sea ice cover.

  6. Gravitational vacuum polarization phenomena due to the Higgs field

    E-Print Network [OSTI]

    Roberto Onofrio

    2013-03-22T23:59:59.000Z

    In the standard model the mass of elementary particles is considered as a dynamical property emerging from their interaction with the Higgs field. We show that this assumption implies peculiar deviations from the law of universal gravitation in its distance and mass dependence, as well as from the superposition principle. The experimental observation of the predicted deviations from the law of universal gravitation seems out of reach. However, we argue that a new class of experiments aimed at studying the influence of surrounding masses on the gravitational force - similar to the ones performed by Quirino Majorana almost a century ago - could be performed to test the superposition principle and to give direct limits on the presence of non-minimal couplings between the Higgs field and the spacetime curvature. From the conceptual viewpoint, the violation of the superposition principle for gravitational forces due to the Higgs field creates a conflict with the notion that gravitational potentials, as assumed in Newtonian gravitation or in post-Newtonian parameterizations of metric theories, are well-defined concepts to describe gravity in their non-relativistic limit.

  7. Roles of cavitation/column separation due to earthquake-induced hydraulic transients

    SciTech Connect (OSTI)

    Hwang, Y.D.

    1986-01-01T23:59:59.000Z

    The roles of cavitation/column separation due to earthquake-induced hydraulic transients in pipe flow were investigated experimentally and theoretically. It is known that when the system pressure during a hydraulic transient reaches the saturation pressure of the liquid, cavitation/column separation occurs. When the cavities collapse or when the separated liquid columns rejoin, very high pressures are produced. The experiment employed a pipe mounted between a constant-pressure tank and a piston-type excitation device. The resulting pressure variation at the piston was recorded continually. Comparison of pressure response for various test runs indicated that the peak pressures at/near resonance frequency were not affected significantly by the excitation velocity amplitude in cases of cavitation/column separation. These results were confirmed by comparison with theoretical analysis. A numerical method to simulate column separation/cavitation was developed. In order to eliminate numerical oscillation, the flux-correction method was introduced. Results obtained suggest that the cavitation/column separation due to earthquake-induced hydraulic transients is an important damage mechanism.

  8. Comment on "Air Emissions Due to Wind and Solar Power" and Supporting Information

    E-Print Network [OSTI]

    Mills, Andrew D.

    2011-01-01T23:59:59.000Z

    due to wind and solar power. Environ. Sci. Technol. (2)Emissions Due to Wind and Solar Power” Andrew Mills, ? , †due to wind and solar power. Environ. Sci. Technol. (2)

  9. Hydrodynamic loads on flexible marine structures due to vortex shedding

    SciTech Connect (OSTI)

    Every, M.J.; King, R.

    1982-12-01T23:59:59.000Z

    This paper makes a comparison of experimental measurements and a recently developed methodology for the prediction of the increase in the steady drag of a cylinder undergoing vortex-induced vibrations. The experimental results were obtained during the development of a means to reduce the flow-induced vibration of a cable-suspended pile of the COGNAC platform installation and agree well with the predictions made in this paper. Next, a brief consideration is made of some of the authors' experience of methods used to reduce vortex-induced vibrations, and hence stress levels. Finally, a reduction method which used an air-blowing manifold is described and results presented.

  10. Optical bistability at low light level due to collective atomic recoil

    E-Print Network [OSTI]

    M. Vengalattore; M. Hafezi; M. D. Lukin; M. Prentiss

    2008-04-15T23:59:59.000Z

    We demonstrate optical nonlinearities due to the interaction of weak optical fields with the collective motion of a strongly dispersive ultracold gas. The combination of a recoil-induced resonance (RIR) in the high gain regime and optical waveguiding within the dispersive medium enables us to achieve a collective atomic cooperativity of $275 \\pm 50$ even in the absence of a cavity. As a result, we observe optical bistability at input powers as low as 20 pW. The present scheme allows for dynamic optical control of the dispersive properties of the ultracold gas using very weak pulses of light. The experimental observations are in good agreement with a theoretical model.

  11. CSC 2420S 2012, Assignment 2 Due: March 26

    E-Print Network [OSTI]

    Borodin, Allan

    the convergence time. Essentially show that the locality gap is at most k. 3. Let w() be a monotone, normalized) without any reference to randomiza- tion. 5. Consider a constraint satisfaction problem CSP where each as to decide "with high probability" whether or not the CSP has a solution. Brute force search would result

  12. Costs of Land Subsidence Due to Groundwater Withdrawal 

    E-Print Network [OSTI]

    Warren, J. P.; Jones, L. L.; Griffin, W. L.; Lacewell, R. D.

    1974-01-01T23:59:59.000Z

    out. The cost data resulting from those samples formed the basis for economic analysis. Historical costs and property losses that were attributable to subsidence were estimated to be $60.7 million and $48.9 million, respectively, or $109.6 million...

  13. Math 308, Matlab assignment 2 due February 12 in class

    E-Print Network [OSTI]

    Anshelevich, Michael

    will need to determine the step sizes yourself. Plot the results on one plot. Label the plot and the axes plot for more details. You can also add a new graph to the previous plot by using hold on / hold off commands. Use legend('first graph','second graph') to label the graphs, xlabel('x'), ylabel('y'), title

  14. Plans, Implementation, and Results

    Broader source: Energy.gov [DOE]

    The Bioenergy Technologies Office carries out technology research, development, and deployment through an ongoing process of planning and analysis, implementation, and review. This Web page includes links to documents that support and document the program management process, and the results and public benefits that derive from it.

  15. Recent results from MAC

    SciTech Connect (OSTI)

    MAC Collaboration

    1982-05-01T23:59:59.000Z

    Some preliminary results from the MAC detector at PEP are presented. These include measurements of the angular distribution of ..gamma gamma.., ..mu mu.. and tau tau final states, a determination of the tau lifetime, a measurement of R, and a presentation of the inclusive muon p/sub perpendicular/ distribution for hadronic events.

  16. A Qualitative Study of Intergenerational Literacy Connection (ILC) Practices Among Korean ELL Families and Teachers

    E-Print Network [OSTI]

    Shin, Jee Young

    2012-07-16T23:59:59.000Z

    's challenges and limited resources resulted in the creation of invisible expectations of the other parties. However, by watching video clips about literacy practices and reading handouts about each person's literacy values, goals, experiences, and photo...

  17. Formal reasoning on qualitative models of coinfection of HIV and Tuberculosis and HAART therapy

    E-Print Network [OSTI]

    2010-01-18T23:59:59.000Z

    , on the boundaries of bioinformatics, computational and systems biology. Results We present a simplified formalisation of the highly dynamic system consisting of HIV, TB and related therapies, at the cellular level. The progression of the disease (AIDS) depends hence...

  18. A resilience assessment framework for infrastructure and economic systems : quantitative and qualitative resilience analysis of petrochemical supply chains to a hurricane.

    SciTech Connect (OSTI)

    Ehlen, Mark Andrew; Vugrin, Eric D.; Warren, Drake E.

    2010-03-01T23:59:59.000Z

    In recent years, the nation has recognized that critical infrastructure protection should consider not only the prevention of disruptive events, but also the processes that infrastructure systems undergo to maintain functionality following disruptions. This more comprehensive approach has been termed critical infrastructure resilience (CIR). Given the occurrence of a particular disruptive event, the resilience of a system to that event is the system's ability to efficiently reduce both the magnitude and duration of the deviation from targeted system performance levels. Sandia National Laboratories (Sandia) has developed a comprehensive resilience assessment framework for evaluating the resilience of infrastructure and economic systems. The framework includes a quantitative methodology that measures resilience costs that result from a disruption to infrastructure function. The framework also includes a qualitative analysis methodology that assesses system characteristics that affect resilience in order to provide insight and direction for potential improvements to resilience. This paper describes the resilience assessment framework. This paper further demonstrates the utility of the assessment framework through application to a hypothetical scenario involving the disruption of a petrochemical supply chain by a hurricane.

  19. Cosmic Electromagnetic Fields due to Perturbations in the Gravitational Field

    E-Print Network [OSTI]

    Bishop Mongwane; Peter K. S. Dunsby; Bob Osano

    2012-10-21T23:59:59.000Z

    We use non-linear gauge-invariant perturbation theory to study the interaction of an inflation produced seed magnetic field with density and gravitational wave perturbations in an almost Friedmann-Lema\\^itre-Robertson-Walker (FLRW) spacetime. We compare the effects of this coupling under the assumptions of poor conductivity, infinite conductivity and the case where the electric field is sourced via the coupling of velocity perturbations to the seed field in the ideal magnetohydrodynamic (MHD) regime, thus generalizing, improving on and correcting previous results. We solve our equations for long wavelength limits and numerically integrate the resulting equations to generate power spectra for the electromagnetic field variables, showing where the modes cross the horizon. We find that the rotation of the electric field dominates the power spectrum on small scales, in agreement with previous arguments.

  20. RESULTS OF SLICE MEASUREMENTS

    E-Print Network [OSTI]

    Rudolph, J

    2011-01-01T23:59:59.000Z

    The linear accelerator ELBE delivers high-brightness electron bunches to multiple user stations, including two IR-FEL oscillators [1], [2]. In the framework of an upgrade program the current thermionic injector is being replaced by a SRF-photoinjector [3], [4]. The SRF injector promises higher beam quality, especially required for future experiments with high power laser radiation. During the commissioning phase, the SRF-injector was running in parallel to the thermionic gun. After installation of a injection beamline (dogleg), beam from the SRF-injector can now be injected into the ELBE linac. Detailed characterization of the electron beam quality delivered by the new electron injector includes vertical slice emittance measurements in addition to measurements of projected emittance values. This report gives an overview of the status of the project and summarizes first measurement results as well as results of simulations performed with measurement settings.

  1. Tevatron Top Results

    E-Print Network [OSTI]

    Christophe Clement

    2006-05-28T23:59:59.000Z

    I present the latest results from the CDF and D0 collaborations on top quark production (single top and top quark pair production) at the Tevatron proton-antiproton collider at sqrt(s) =1.96 TeV, measurements of the top quark decay properties such as the branching ratio B(t -> Wb), the W helicity in t -> Wb decays, and measurements of fundamental parameters such as the top quark charge and mass.

  2. Qualitative vs. quantitative data: Controls on the accuracy of PID field screening in petroleum contamination assessment applications

    SciTech Connect (OSTI)

    Luessen, M.J.; Allex, M.K.; Holzel, F.R. [ATEC Associates Inc., Cincinnati, OH (United States)

    1995-09-01T23:59:59.000Z

    The use of photoionization detectors (PIDs) for field screening of soils for volatile organic contaminants has become a standard industry practice. PID screening data is generally utilized as a qualitative basis for selection of samples for laboratory analysis to quantify concentrations of specific contaminants of concern. Both qualitative field screening data and quantitative laboratory analytical data were reviewed for more than 100 hydrogeologic assessment sites in Ohio to evaluate controls on the effectiveness of field screening data. Assessment data evaluated was limited to sites at which the suspected contaminant source was a gasoline underground storage tanks system. In each case, a 10.0 eV (or greater) PID calibrated for benzene was used to screen soils which were analyzed for benzene, toluene, ethylbenzene and xylene (BTEX) by SW 846 method 8020. Controls on field screening which were evaluated for each site included (1) soil classification, (2) soil moisture, (3) weather conditions, (4) background levels, (5) equipment quality, (6) screening methodology, and (7) laboratory QA/QC. Statistical data analysis predictably indicated a general overestimate of total BTEX levels based on field screening (gasoline is approximately 25 weight percent BTEX). However, data locally indicated cases of both significant (i.e., more than an order of magnitude difference) over- and under-estimation of actual BTEX concentrations (i.e., quantitative laboratory data) by field screening data.

  3. Double Chooz: Latest results

    E-Print Network [OSTI]

    J. I. Crespo-Anadón; for the Double Chooz collaboration

    2014-12-11T23:59:59.000Z

    The latest results from the Double Chooz experiment on the neutrino mixing angle $\\theta_{13}$ are presented. A detector located at an average distance of 1050 m from the two reactor cores of the Chooz nuclear power plant has accumulated a live time of 467.90 days, corresponding to an exposure of 66.5 GW-ton-year (reactor power $\\times$ detector mass $\\times$ live time). A revised analysis has boosted the signal efficiency and reduced the backgrounds and systematic uncertainties compared to previous publications, paving the way for the two detector phase. The measured $\\sin^2 2\\theta_{13} = 0.090^{+0.032}_{-0.029}$ is extracted from a fit to the energy spectrum. A deviation from the prediction above a visible energy of 4 MeV is found, being consistent with an unaccounted reactor flux effect, which does not affect the $\\theta_{13}$ result. A consistent value of $\\theta_{13}$ is measured in a rate-only fit to the number of observed candidates as a function of the reactor power, confirming the robustness of the result.

  4. Neutrino pair emission due to scattering of electrons off fluxoids in superfluid neutron star cores

    E-Print Network [OSTI]

    A. D. Kaminker; D. G. Yakovlev; P. Haensel

    1997-02-18T23:59:59.000Z

    We study the emission of neutrinos, resulting from the scattering of electrons off magnetic flux tubes (fluxoids) in the neutron star cores with superfluid (superconducting) protons. In the absence of proton superfluidity (T> T_{cp}), this process transforms into the well known electron synchrotron emission of neutrino pairs in a locally uniform magnetic field B, with the neutrino energy loss rate Q proportional to B^2 T^5. For temperatures T not much below T_{cp}, the synchrotron regime (Q \\propto T^5) persists and the emissivity Q can be amplified by several orders of magnitude due to the appearance of the fluxoids and associated enhancement of the field within them. For lower T, the synchrotron regime transforms into the bremsstrahlung regime (Q \\propto T^6) similar to the ordinary neutrino-pair bremsstrahlung of electrons which scatter off atomic nuclei. We calculate Q numerically and represent our results through a suitable analytic fit. In addition, we estimate the emissivities of two other neutrino-production mechanisms which are usually neglected -- neutrino-pair bremsstrahlung processes due to electron-proton and electron-electron collisions. We show that the electron-fluxoid and electron-electron scattering can provide the main neutrino production mechanisms in the neutron star cores with highly superfluid protons and neutrons at T scattering is significant if the initial, locally uniform magnetic field B > 10^{13} G.

  5. Celiac Injury Due to Arcuate Ligament: An Endovascular Approach

    SciTech Connect (OSTI)

    Zini, Chiara, E-mail: zini.chiara@gmail.com; Corona, Mario, E-mail: mario.corona@uniroma.it; Boatta, Emanuele, E-mail: emanuele.boatta@yahoo.it; Wlderk, Andrea, E-mail: a.wlderk@virgilio.it; Salvatori, Filippo Maria, E-mail: filippomaria.salvatori@uniroma1.it; Fanelli, Fabrizio, E-mail: fabrizio.fanelli@uniroma1.it ['Sapienza,'-University of Rome, Vascular and Interventional Radiology Unit, Radiology, Oncology and Pathology Department (Italy)

    2013-06-15T23:59:59.000Z

    Celiac trunk injures are rare events, with high mortality rates and difficult management. Endovascular treatment may be considered to avoid bleeding. We report a case of severe bleeding in a 37-year-old man resulting from celiac trunk stretching after a motorcycle crash. Because direct celiac trunk catheterization was not possible, a retrograde catheterization of the common hepatic artery was performed via the superior mesenteric artery. Two vascular plugs (type IV) were released, and the exclusion of the celiac trunk origin was completed with the deployment of an aortic cuff. The patient's clinical condition immediately improved, and after 6 months' follow-up, imaging confirmed the complete exclusion of the celiac trunk.

  6. Failure of sheathed thermocouples due to thermal cycling

    SciTech Connect (OSTI)

    Anderson, R.L.; Ludwig, R.L.

    1982-03-01T23:59:59.000Z

    Open circuit failures (up to 100%) in small-diameter thermocouples used in electrically heated nuclear fuel rod simulator prototypes during thermal cycling tests were investigated to determine the cause(s) of the failures. The experiments conducted to determine the relative effects of differential thermal expansion, wire size, grain size, and manufacturing technology are described. It was concluded that the large grain size and embrittlement which result from certain common manufacturing annealing and drawing procedures were a major contributing factor in the breakage of the thermocouple wires.

  7. A periodic inspection and replacement policy for systems subject to competing failure modes due to degradation and traumatic events

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A periodic inspection and replacement policy for systems subject to competing failure modes due-making. A condition-based periodic inspection/replacement policy is developed and compared with a benchmark time- based block replacement policy. Numerical results show that it is indeed useful to follow closely

  8. Neutrino and antineutrino energy loss rates in massive stars due to isotopes of titanium

    E-Print Network [OSTI]

    Nabi, Jameel-Un

    2011-01-01T23:59:59.000Z

    Weak interaction rates on titanium isotopes are important during the late phases of evolution of massive stars. A search was made for key titanium isotopes from available literature and a microscopic calculation of weak rates of these nuclei were performed using the proton-neutron quasiparticle random phase approximation (pn-QRPA) theory. Earlier the author presented the stellar electron capture rates on titanium isotopes. In this paper I present the neutrino and antineutrino energy loss rates due to capture and decay rates on isotopes of titanium in stellar environment. Accurate estimate of neutrino energy loss rates are needed for the study of the late stages of the stellar evolution, in particular for cooling of neutron stars and white dwarfs. The results are also compared against previous calculations. At high stellar temperatures the calculated neutrino and antineutrino energy loss rates are bigger by more than two orders of magnitude as compared to the large scale shell model results and favor stellar c...

  9. Particle Acceleration in Relativistic Jets due to Weibel Instability

    E-Print Network [OSTI]

    K. -I. Nishikawa; P. Hardee; G. Richardson; R. Preece; H. Sol; G. J. Fishman

    2003-06-04T23:59:59.000Z

    Shock acceleration is an ubiquitous phenomenon in astrophysical plasmas. Plasma waves and their associated instabilities (e.g., the Buneman instability, two-streaming instability, and the Weibel instability) created in the shocks are responsible for particle (electron, positron, and ion) acceleration. Using a 3-D relativistic electromagnetic particle (REMP) code, we have investigated particle acceleration associated with a relativistic jet front propagating through an ambient plasma with and without initial magnetic fields. We find only small differences in the results between no ambient and weak ambient magnetic fields. Simulations show that the Weibel instability created in the collisionless shock front accelerates particles perpendicular and parallel to the jet propagation direction. While some Fermi acceleration may occur at the jet front, the majority of electron acceleration takes place behind the jet front and cannot be characterized as Fermi acceleration. The simulation results show that this instability is responsible for generating and amplifying highly nonuniform, small-scale magnetic fields, which contribute to the electron's transverse deflection behind the jet head. The ``jitter'' radiation (Medvedev 2000) from deflected electrons has different properties than synchrotron radiation which is calculated in a uniform magnetic field. This jitter radiation may be important to understanding the complex time evolution and/or spectral structure in gamma-ray bursts, relativistic jets, and supernova remnants.

  10. Theory and Observations of Low Frequency Eigenmodes due to Alfvén Acoustic Coupling in Toroidal Fusion Plasmas

    E-Print Network [OSTI]

    Theory and Observations of Low Frequency Eigenmodes due to Alfvén Acoustic Coupling in Toroidal Fusion Plasmas

  11. AUGC2009 XX/XX, pages 1 X Estimation de la qualit des donnes

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    grilles de qualité. ABSTRACT. The control of failure risks of dams is of major importance in our society on the dam performance knowledge as regards their main failure modes and the reliability of this knowledge. Here, the estimation of the result reliability of the dam performance assessment model, based

  12. Un modle SVM pour l'valuation de la qualit de donnes biomtriques

    E-Print Network [OSTI]

    Boyer, Edmond

    biométrique testé. Abstract ­ This paper presents a generic method (i.e., modality-independent) to evaluate are used to quantify the relevance of the proposed method. Experimental results show the efficiency of the proposed method in detecting several types of real alterations, that may deeply influence the overall

  13. Recent Results from HAPPEX

    SciTech Connect (OSTI)

    Robert Michaels

    2006-09-18T23:59:59.000Z

    New measurements of the parity-violating asymmetry in elastic scattering of 3GeV electrons off hydrogen and helium-4 targets at theta{sub lab} = 6 degrees are reported. The helium-4 result is A = (+6.40 {+-} 0.23 (stat) {+-} 0.12 (syst)) * 10{sup -6}. The hydrogen result is A = (-1.58 {+-} 0.12 (stat) {+-} 0.04 (syst)) * 10{sup -6}. The asymmetry for hydrogen is a function of a linear combination of G{sub E}{sup s} and G{sub M}{sup s}, the strange quark contributions to the electric and magnetic form factors of the nucleon respectively, and that for helium-4 is a function solely of G{sub E}{sup s}. The combination of the two measurements separates G{sub E}{sup s} and G{sub M}{sup s} and provide new limits on the role of strange quarks in the nucleon charge and magnetization distributions. We extract G{sub E}{sup s} = 0.002 {+-} 0.014 {+-} 0.007 at Q{sup 2} = 0.077 GeV{sup 2} and G{sub E}{sup s} + 0.09 G{sub M}{sup s} = 0.007 {+-} 0.011 {+-} 0.006 at Q{sup 2} = 0.109 GeV{sup 2}.

  14. Organic Separation Test Results

    SciTech Connect (OSTI)

    Russell, Renee L.; Rinehart, Donald E.; Peterson, Reid A.

    2014-09-22T23:59:59.000Z

    Separable organics have been defined as “those organic compounds of very limited solubility in the bulk waste and that can form a separate liquid phase or layer” (Smalley and Nguyen 2013), and result from three main solvent extraction processes: U Plant Uranium Recovery Process, B Plant Waste Fractionation Process, and Plutonium Uranium Extraction (PUREX) Process. The primary organic solvents associated with tank solids are TBP, D2EHPA, and NPH. There is concern that, while this organic material is bound to the sludge particles as it is stored in the tanks, waste feed delivery activities, specifically transfer pump and mixer pump operations, could cause the organics to form a separated layer in the tank farms feed tank. Therefore, Washington River Protection Solutions (WRPS) is experimentally evaluating the potential of organic solvents separating from the tank solids (sludge) during waste feed delivery activities, specifically the waste mixing and transfer processes. Given the Hanford Tank Waste Treatment and Immobilization Plant (WTP) waste acceptance criteria per the Waste Feed Acceptance Criteria document (24590-WTP-RPT-MGT-11-014) that there is to be “no visible layer” of separable organics in the waste feed, this would result in the batch being unacceptable to transfer to WTP. This study is of particular importance to WRPS because of these WTP requirements.

  15. Approximations by gravitational fields due to restricted unit point masses

    E-Print Network [OSTI]

    Shull, Carolyn Sue Flowers

    1973-01-01T23:59:59.000Z

    approximations by Chui (1, 3, 4j and D. J. Newman $12$. Some open problems will be discussed including a conjecture by Chui f2]. I ht th ' th ~Pdl f~hA 1 Mth i I ~gociet is used as a pattern for format, CHAPTER I UNIFORM APPROXIMATION ON COMPACT SETS Let C... free analytic functions in D are not approximable. Also the following result was obtained in fgj . THEOREM 1. 4. A closed set R dis oint from a domain D which lies in som h lf- 1 ne H is ol omial a roximation set relative t b~fl fRt~tbf th I t f3d...

  16. Toroidal momentum transport in a tokamak due to profile shearing

    SciTech Connect (OSTI)

    Buchholz, R.; Grosshauser, S. R.; Hornsby, W. A.; Migliano, P.; Peeters, A. G. [Physics Department, University of Bayreuth, Universitätsstrasse 30 Bayreuth (Germany); Camenen, Y. [Aix-Marseille Université, CNRS, PIIM UMR 7345, Marseille 13397 (France); Casson, F. J. [EURATOM Association, Max Planck Institut fuer Plasmaphysik, Boltzmannstrasse 2, Garching 85748 (Germany)

    2014-06-15T23:59:59.000Z

    The effect of profile shearing on toroidal momentum transport is studied in linear and non-linear gyro-kinetic simulations. Retaining the radial dependence of both plasma and geometry parameters leads to a momentum flux that has contributions both linear in the logarithmic gradients of density and temperature, as well as contributions linear in the derivatives of the logarithmic gradients. The effect of the turbulence intensity gradient on momentum transport is found to be small for the studied parameters. Linear simulations at fixed normalized toroidal wave number predict a weak dependence of the momentum flux on the normalized Larmor radius ?{sub *}=?/R. Non-linear simulations, however, at sufficiently small ?{sub *} show a linear scaling of the momentum flux with ?{sub *}. The obtained stationary rotation gradients are in the range of, although perhaps smaller than, current experiments. For a reactor plasma, however, a rather small rotation gradient should result from profile shearing.

  17. Rotational quenching of CO due to H$_2$ collisions

    E-Print Network [OSTI]

    Yang, Benhui; Balakrishnan, N; Forrey, R C

    2010-01-01T23:59:59.000Z

    Rate coefficients for state-to-state rotational transitions in CO induced by both para- and ortho-H$_2$ collisions are presented. The results were obtained using the close-coupling method and the coupled-states approximation, with the CO-H$_2$ interaction potential of Jankowski & Szalewicz (2005). Rate coefficients are presented for temperatures between 1 and 3000 K, and for CO($v=0,j$) quenching from $j=1-40$ to all lower $j^\\prime$ levels. Comparisons with previous calculations using an earlier potential show some discrepancies, especially at low temperatures and for rotational transitions involving large $|\\Delta j|$. The differences in the well depths of the van der Waals interactions in the two potential surfaces lead to different resonance structures in the energy dependence of the cross sections which influence the low temperature rate coefficients. Applications to far infrared observations of astrophysical environments are briefly discussed.

  18. MELCOR validation results

    SciTech Connect (OSTI)

    Leigh, C.D.; Byers, R.K.; Shaffer, C.J.

    1986-01-01T23:59:59.000Z

    Recent comparisons of MELCOR predictions to three sets of experiments, the ABCOVE Aerosol Experiments, the HDR-V44 Steam Blowdown Experiments, and the Battelle-Frankfurt Gas Mixing Experiments are presentd. All three comparisons involve conditions that are of concern in an LWR containment during a severe accident. MELCOR results are compared to the experimental data and the predictions of at least one other state-of-the-art code for each test. In the ABCOVE comparisons, the MELCOR aerosol modeling is demonstrated. In comparisons to the HDR-V44 Steam Blowdown Experiments, MELCOR predictions of the response of the containment to the release of steam from the primary system are shown, and in the Battelle-Frankfurt comparisons, MELCOR predictions of the diffusion in a containment of an injected hydrogen-nitrogen gas are studied. These comparisons provide critical testing of the MELCOR control volume hydrodynamics package, the radionuclide package, and the flow path package.

  19. Results from NA49

    E-Print Network [OSTI]

    C. Hoehne

    2005-10-17T23:59:59.000Z

    An overview of results from the CERN experiment NA49 is presented with emphasis on most recent measurements. NA49 has systematically studied the dependence of hadron production on energy and system size or centrality. At top-SPS energy the detailed investigation of hadron production, now also extending to elliptic flow of Lambda-baryons and to identified particle yields at high p_t, shows that the created matter behaves in a similar manner as at RHIC energies. In the lower SPS energy range a distinct structure is observed in the energy dependence of the rate of strangeness production and in the slopes of p_t-spectra suggesting the onset of the creation of a deconfined phase of matter.

  20. Qualitative risk evaluation of environmental restoration programs at Brookhaven National Laboratory

    SciTech Connect (OSTI)

    Morris, S.C.

    1996-05-01T23:59:59.000Z

    This report documents the evaluation of risks associated with environmental restoration activities at Brookhaven National Laboratory using two tools supplied by DOE to provide a consistent set of risk estimates across the DOE complex: Risk Data Sheets (RDS) and Relative Risk Ranking. The tools are described, the process taken characterized, results provided and discussed. The two approaches are compared and recommendations provided for continuing improvement of the process.

  1. Reversal of Hugoniot locus for strong shocks due to radiation

    SciTech Connect (OSTI)

    Li Jiwei; Li Jinghong; Meng Guangwei [Institute of Applied Physics and Computational Mathematics, Beijing 100094 (China)

    2011-04-15T23:59:59.000Z

    Shock Hugoniot can be used to express the response of a material to shocks, and the compression ratio of the shock can be determined by the Hugoiot locus. When the shock is strong, it will become radiating, and the radiation will affect the Hugoniot. The role of radiation on the Hugoniot condition is studied in the paper. For the radiative flux-dominated shocks, the radiative flux if large enough may render the structure of the shock Hugoniot locus totally different with the case for the pure hydrodynamic shock: the two branches with one in quadrant I and the other in quadrant III are reversed into two in quadrants IV and II, respectively, correspondingly the compression ratio may be larger than the limiting value ({gamma}+1)/({gamma}-1) for ideal gases with index {gamma}. For the radiative shock in which the radiative heat wave propagates supersonically, a threshold value for the net radiative flux to the preshock is also defined which determines whether the Hugoniot locus is reversed and the compression ratio exceeds the limiting value. Numerical results also verify the reversal of the Hugoniot locus of the shocks if the net radiative flux to the preshock exceeds the threshold value.

  2. Damage in porous media due to salt crystallization

    E-Print Network [OSTI]

    Noushine Shahidzadeh-Bonn; Julie Desarnaud; François Bertrand; Xavier Chateau; Daniel Bonn

    2010-07-13T23:59:59.000Z

    We investigate the origins of salt damage in sandstones for the two most common salts: sodium chloride and sulfate. The results show that the observed difference in damage between the two salts is directly related to the kinetics of crystallization and the interfacial properties of the salt solutions and crystals with respect to the stone. We show that, for sodium sulfate, the existence of hydrated and anhydrous crystals and specifically their dissolution and crystallization kinetics are responsible for the damage. Using magnetic resonance imaging and optical microscopy we show that when water imbibes sodium sulfate contaminated sandstones, followed by drying at room temperature, large damage occurs in regions where pores are fully filled with salts. After partial dissolution, anhydrous sodium sulfate salt present in these regions gives rise to a very rapid growth of the hydrated phase of sulfate in the form of clusters that form on or close to the remaining anhydrous microcrystals. The rapid growth of these clusters generates stresses in excess of the tensile strength of the stone leading to the damage. Sodium chloride only forms anhydrous crystals that consequently do not cause damage in the experiments.

  3. Radio Scintillation due to Discontinuities in the Interstellar Plasma Density

    E-Print Network [OSTI]

    Hendrik Lambert; Barney Rickett

    1999-11-18T23:59:59.000Z

    We develop the theory of interstellar scintillation as caused by an irregular plasma having a power-law spatial density spectrum with a spectral exponent of 4 corresponding to a medium with abrupt changes in its density. An ``outer scale'' is included in the model representing the typical scale over which the density of the medium remains uniform. Such a spectrum could be used to model plasma shock fronts in supernova remnants or other plasma discontinuities. We investigate and develop equations for the decorrelation bandwidth of diffractive scintillations and the refractive scintillation index and compare our results with pulsar measurements. We consider both a medium concentrated in a thin layer and an extended irregular medium. We conclude that the discontinuity model gives satisfactory agreement for many diffractive measurements, in particular the VLBI meaurements of the structure function exponent between 5/3 and 2. However, it gives less satisfactory agreement for the refractive scintillation index than does the Kolmogorov turbulence spectrum. The comparison suggests that the medium consists of a pervasive background distribution of turbulence embedded with randomly placed discrete plasma structures such as shocks or HII regions. This can be modeled by a composite spectrum following the Kolmogorov form at high wavenumbers and steepening at lower wavenumbers corresponding to the typical (inverse) size of the discrete structures. Such a model can also explain the extreme scattering events. However, lines of sight through the enhanced scattering prevalent at low galactic latitudes are accurately described by the Kolmogorov spectrum in an extended medium and do not appear to have a similar low-wavenumber steepening.

  4. arXiv:1311.0292v1[astro-ph.EP]1Nov2013 Runaway greenhouse effect on exomoons due to

    E-Print Network [OSTI]

    Barnes, Rory

    arXiv:1311.0292v1[astro-ph.EP]1Nov2013 Runaway greenhouse effect on exomoons due to irradiation to experience a runaway greenhouse effect. Results. Planetary illumination from a 13-Jupiter-mass planet onto

  5. Spectral anti-broadening due to four-wave mixing in optical fibers

    E-Print Network [OSTI]

    Alexander M. Balk

    2015-02-08T23:59:59.000Z

    We show that the four-wave mixing can restrict spectral broadening. This is a general physical phenomenon that occurs in one-dimensional systems of four wave packets that resonantly interact "2-to-2": $ \\omega_1+\\omega_2=\\omega_3+\\omega_4,\\; k_1+k_2=k_3+k_4$, when an annihilation of one pair of waves results in the creation of another pair. In addition, for this phenomenon to occur, the group velocities $C_1,C_2,C_3,C_4$ of the packets should be in a certain order: The extreme value (max or min) of the four group velocities should be in the same pair with the middle value of the remaining three, e.g. $C_1due to the presence of an extra invariant, in addition to the energy, momentum, and Manley-Rowe relations.

  6. Neutrino-Pair Emission due to Electron-Phonon Scattering in a Neutron Star Crust

    E-Print Network [OSTI]

    D. G. Yakovlev; A. D. Kaminker

    1996-04-19T23:59:59.000Z

    Neutrino-pair bremsstrahlung radiation is considered due to electron--phonon scattering of degenerate, relativistic electrons in a lattice of spherical atomic nuclei in a neutron star crust. The neutrino energy generation rate is calculated taking into account exact spectrum of phonons, the Debye--Waller factor, and the nuclear form--factor in the density range from $10^7$~g~cm$^{-3}$ to $10^{14}$~g~cm$^{-3}$ at arbitrary nuclear composition for body-centered-cubic and face-centered-cubic Coulomb crystals. The results are fitted by a unified analytic expression. A comparison is given of the neutrino bremsstrahlung energy losses in a neutron star crust composed of ground state and accreted matter, in the solid and liquid phases.

  7. Assessing Fatigue and Ultimate Load Uncertainty in Floating Offshore Wind Turbines Due to Varying Simulation Length

    SciTech Connect (OSTI)

    Stewart, G.; Lackner, M.; Haid, L.; Matha, D.; Jonkman, J.; Robertson, A.

    2013-07-01T23:59:59.000Z

    With the push towards siting wind turbines farther offshore due to higher wind quality and less visibility, floating offshore wind turbines, which can be located in deep water, are becoming an economically attractive option. The International Electrotechnical Commission's (IEC) 61400-3 design standard covers fixed-bottom offshore wind turbines, but there are a number of new research questions that need to be answered to modify these standards so that they are applicable to floating wind turbines. One issue is the appropriate simulation length needed for floating turbines. This paper will discuss the results from a study assessing the impact of simulation length on the ultimate and fatigue loads of the structure, and will address uncertainties associated with changing the simulation length for the analyzed floating platform. Recommendations of required simulation length based on load uncertainty will be made and compared to current simulation length requirements.

  8. A QUALITATIVE APPROACH TO UNCERTAINTY ANALYSIS FOR THE PWR ROD EJECTION ACCIDENT

    SciTech Connect (OSTI)

    DIAMOND,D.J.; ARONSON,A.; YANG,C.

    2000-06-19T23:59:59.000Z

    In order to understand best-estimate calculations of the peak local fuel enthalpy during a rod ejection accident, an assessment of the uncertainty has been completed. The analysis took into account point kinetics parameters which would be available from a three-dimensional core model and engineering judgment as to the uncertainty in those parameters. Sensitivity studies to those parameters were carried out using the best-estimate code PARCS. The results showed that the uncertainty (corresponding to one standard deviation) in local fuel enthalpy would be determined primarily by the uncertainty in ejected rod worth and delayed neutron fraction. For an uncertainty in the former of 8% and the latter of 5%, the uncertainty in fuel enthalpy varied from 51% to 69% for control rod worth varying from $1.2 to $1.0. Also considered in the uncertainty were the errors introduced by uncertainties in the Doppler reactivity coefficient, the fuel pellet specific heat, and assembly and fuel pin peaking factors.

  9. Government Benefits and the Rule of Law: Toward a Standards-Based Theory of Due Process

    E-Print Network [OSTI]

    Levy, Richard E.; Shapiro, Sidney A.

    2006-01-01T23:59:59.000Z

    Under the Supreme Court's current due process jurisprudence, due process applies only when government actors deprive a person of a protected interest in life, liberty, or property, and government benefits are property only when has an entitlement...

  10. Transient Eddy Current Response Due to a Subsurface Crack in a Conductive Plate

    SciTech Connect (OSTI)

    Fangwei Fu

    2006-08-09T23:59:59.000Z

    Eddy current nondestructive evaluation (NDE) is usually carried out by exciting a time harmonic field using an inductive probe. However, a viable alternative is to use transient eddy current NDE in which a current pulse in a driver coil produces a transient .eld in a conductor that decays at a rate dependent on the conductivity and the permeability of the material and the coil configuration. By using transient eddy current, it is possible to estimate the properties of the conductive medium and to locate and size potential .aws from the measured probe response. The fundamental study described in this dissertation seeks to establish a theoretical understanding of the transient eddy current NDE. Compared with the Fourier transform method, the derived analytical formulations are more convenient when the transient eddy current response within a narrow time range is evaluated. The theoretical analysis provides a valuable tool to study the effect of layer thickness, location of defect, crack opening as well as the optimization of probe design. Analytical expressions have been developed to evaluate the transient response due to eddy currents in a conductive plate based on two asymptotic series. One series converges rapidly for a short time regime and the other for a long time regime and both of them agree with the results calculated by fast Fourier transform over all the times considered. The idea of asymptotic expansion is further applied to determine the induced electromotive force (EMF) in a pick-up coil due to eddy currents in a cylindrical rod. Starting from frequency domain representation, a quasi-static time domain dyadic Green's function for an electric source in a conductive plate has been derived. The resulting expression has three parts; a free space term, multiple image terms and partial reflection terms. The dyadic Green's function serves as the kernel of an electric field integral equation which defines the interaction of an ideal crack with the transient eddy currents in a conductive plate. The crack response is found using the reciprocity theorem. Good agreement is observed between the predictions of the magnetic field due to the crack and experimental measurements.

  11. Search results | Department of Energy

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    1 Search results Search results Enter terms Search Showing 1 - 4 of 4 results. Download Green Fuel This activity allows students the opportunity to explore different methods for...

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    1 Search results Search results Enter terms Search Showing 1 - 5 of 5 results. Download Alternative Fuels Used in Transportation (5 Activities) Gasoline is the most commonly...

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    1 Search results Search results Enter terms Search Showing 1 - 6 of 6 results. Download Alternative Fuels Used in Transportation (5 Activities) Gasoline is the most commonly...

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    Elementary (K-5) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Article Energy Literacy in Action: Nevada Teachers Helping Students Learn...

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    Elementary (K-5) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Page Advantages and Challenges of Wind Energy Wind energy offers many...

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    K-8 Grade Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Page How Distributed Wind Works Wind generator http:energy.goveerewind...

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    K-8 Grade Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Article Energy Literacy in Action: Nevada Teachers Helping Students Learn About...

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    Elementary (K-5) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Page How Distributed Wind Works Wind generator http:energy.goveerewind...

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    Elementary (K-5) Teachers Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Energy Management Students will review energy basics and what...

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    Elementary (K-5) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy Management Students will review energy basics and what they...

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    Water Elementary (K-5) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Power to the Plug: An Introduction to Energy,...

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    Elementary (K-5) Teachers Search results Search results Enter terms Search Showing 1 - 3 of 3 results. Download Energy Management Students will review energy basics and what...

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    Elementary (K-5) Teachers Middle School (6-8) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Protect Your Climate Curriculum...

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    Elementary (K-5) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Protect Your Climate Curriculum and Training Request projects...

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    Energy Efficiency Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Understanding Earth's Energy Sources In Part 1, students will know how...

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    Vehicles Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Understanding Earth's Energy Sources In Part 1, students will know how fossil fuels...

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    results Search results Enter terms Search Showing 1 - 3 of 3 results. Download Alternative Fuels Used in Transportation (5 Activities) Gasoline is the most commonly used fuel...

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    results Search results Enter terms Search Showing 1 - 9 of 9 results. Download Alternative Fuels Used in Transportation (5 Activities) Gasoline is the most commonly used fuel...

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    Biofuels Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Transportation Fuels: The Future is Today (6 Activities) This teacher guide...

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    Biofuels Download Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Alternative Fuels Used in Transportation (5 Activities) Gasoline is the...

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    Biofuels Download Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Transportation Fuels: The Future is Today (6 Activities) This teacher...

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    results Search results Enter terms Search Showing 31 - 40 of 53 results. Download Wind Turbine Blade Design Blade engineering and design is one of the most complicated and...

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    3 Search results Search results Enter terms Search Showing 1 - 8 of 8 results. Download Energy Literacy Videos New video series, Energy Literacy highlights the 7 Essential...

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    High School (9-12) Teachers Energy Efficiency Search results Search results Enter terms Search Showing 1 - 4 of 4 results. Download The BEAM Project: Building Efficient...

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    Middle School (6-8) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Protect Your Climate Curriculum and Training Request projects...

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    Waste Management Elementary (K-5) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy Expos Students work in groups to create...

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    Science & Technology Search results Search results Enter terms Search Showing 1 - 8 of 8 results. Download Exploring Hydroelectricity (9 activities) Integrated and inquiry-based...

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    Technology Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy in Today's Global Society Energy is an abstract concept that is very...

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    Technology Search results Search results Enter terms Search Showing 1 - 8 of 8 results. Download Exploring Hydroelectricity (9 activities) Integrated and inquiry-based...

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    Technology Download Search results Search results Enter terms Search Showing 1 - 5 of 5 results. Download Energy Expos Students work in groups to create hands-on exhibits...

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    Technology Search results Search results Enter terms Search Showing 1 - 7 of 7 results. Download Exploring Hydroelectricity (9 activities) Integrated and inquiry-based...

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    Education Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Article Energy Literacy in Action: Nevada Teachers Helping Students Learn About Energy...

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    Education Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Green Fuel This activity allows students the opportunity to explore different...

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    Education Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Energy in Today's Global Society Energy is an abstract concept that is very...

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    Education Search results Search results Enter terms Search Showing 1 - 3 of 3 results. Download Energy in Today's Global Society Energy is an abstract concept that is very...

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    Energy Efficiency Search results Search results Enter terms Search Showing 1 - 10 of 27 results. Download Protect Your Climate Curriculum and Training Request projects here....

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    Middle School (6-8) Teachers Search results Search results Enter terms Search Showing 1 - 10 of 27 results. Download Protect Your Climate Curriculum and Training Request...

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    Middle School (6-8) Teachers Search results Search results Enter terms Search Showing 11 - 20 of 27 results. Download Learning and Conserving (10 activities) These activities...

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    7 Biofuels Bioenergy Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Video A New Biofuels Technology Blooms in Iowa Cellulosic biofuels made...

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    Education & Training Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Energy Transfer 1. Identify a closed system with consevative forces....

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    Search results Search results Enter terms Search Showing 1 - 10 of 31 results. Download Energy Literacy Video Analysis Guide A guide for discussion related to the information and...

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    Search results Search results Enter terms Search Showing 1 - 10 of 12 results. Download Energy Literacy Video Analysis Guide A guide for discussion related to the information and...

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    Alternative Fuel Vehicles Energy Efficiency Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Alternative Fuels Used in Transportation (5...

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    Geothermal Search results Search results Enter terms Search Showing 1 - 3 of 3 results. Download Energy Production Students will compare and contrast renewable and nonrenewable...

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    Geothermal Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Power to the Plug: An Introduction to Energy, Electricity, Consumption, and...

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    Search results Search results Enter terms Search Showing 1 - 7 of 7 results. Download Plants in Your Gas Tank: From Photosynthesis to Ethanol With ethanol becoming more prevalent...

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    results Search results Enter terms Search Showing 11 - 20 of 12 results. Download Photosynthesis and Biomass Growth (7 Activities) Introduce your students to the power of plants...

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    results Search results Enter terms Search Showing 11 - 20 of 13 results. Download Photosynthesis and Biomass Growth (7 Activities) Introduce your students to the power of plants...

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    Solar Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Power to the Plug: An Introduction to Energy, Electricity, Consumption, and...

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    High School (9-12) Teachers Search results Search results Enter terms Search Showing 1 - 8 of 8 results. Download Energy Literacy Videos New video series, Energy Literacy...

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    Energy Sources Search results Search results Enter terms Search Showing 1 - 10 of 18 results. Download Build a Pizza Box Solar Oven Check out this staightforward lesson, that...

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    Energy Sources Search results Search results Enter terms Search Showing 1 - 7 of 7 results. Download Get Current: Switch on Clean Energy Activity Book Switching on clean energy...

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    Energy Sources Search results Search results Enter terms Search Showing 1 - 3 of 3 results. Download Get Current: Switch on Clean Energy Activity Book Switching on clean energy...

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    Energy Sources Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Get Current: Switch on Clean Energy Activity Book Switching on clean energy...

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    Energy Efficiency Search results Search results Enter terms Search Showing 1 - 3 of 3 results. Download Powering the Future Using the Environmental Protection Agency's climate...

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    Energy Sources Search results Search results Enter terms Search Showing 11 - 20 of 17 results. Download Get Current: Switch on Clean Energy Activity Book Switching on clean...

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    6 Search results Search results Enter terms Search Showing 1 - 7 of 7 results. Download Get Current: Switch on Clean Energy Activity Book Switching on clean energy technologies...

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    7 Search results Search results Enter terms Search Showing 1 - 3 of 3 results. Download Powering the Future Using the Environmental Protection Agency's climate change website,...

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  1. Search results | Department of Energy

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    2 Energy Efficiency Search results Search results Enter terms Search Showing 1 - 4 of 4 results. Download Understanding Earth's Energy Sources In Part 1, students will know...

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    Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Video Energy 101: Fuel Cell Technology This video illustrates the fundamentals of fuel cell technology...

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    Energy Sources Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Video Energy 101: Fuel Cell Technology This video illustrates the fundamentals of fuel...

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    Renewables Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Page How Distributed Wind Works Wind generator http:energy.goveerewind...

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    Page Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Page How Distributed Wind Works Wind generator http:energy.goveerewind...

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    Wind Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Page How Distributed Wind Works Wind generator http:energy.goveerewind...

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    Educators Search results Search results Enter terms Search Showing 1 - 3 of 3 results. Page How Distributed Wind Works Wind generator http:energy.goveerewind...

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    Educators Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Page How Distributed Wind Works Wind generator http:energy.goveerewind...

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    Energy Sources Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Page How Distributed Wind Works Wind generator http:energy.goveerewind...

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    Wind Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Page How Distributed Wind Works Wind generator http:energy.goveerewindhow-distributed-wind-...

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    Renewables Search results Search results Enter terms Search Showing 1 - 3 of 3 results. Page How Distributed Wind Works Wind generator http:energy.goveerewind...

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    Page Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Page How Distributed Wind Works Wind generator http:energy.goveerewindhow-distributed-wind-...

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    Educators Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Page How Distributed Wind Works Wind generator http:energy.goveerewind...

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  1. Search results | Department of Energy

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    Geothermal Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Energy Production Students will compare and contrast renewable and nonrenewable...

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    1 Search results Search results Enter terms Search Showing 1 - 10 of 22 results. Download Infographics from the 2014 National Geothermal Student Competition With the theme of...

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    1 Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy Literacy Videos New video series, Energy Literacy highlights the 7 Essential...

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    High School Students Search results Search results Enter terms Search Showing 1 - 6 of 6 results. Article Energy Literacy in Action: Nevada Teachers Helping Students Learn About...

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    4 Search results Search results Enter terms Search Showing 1 - 10 of 48 results. Download Infographics from the 2014 National Geothermal Student Competition With the theme of...

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