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they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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1

Numerical methods of integration applied in the nonlinear dynamic analysis of shells of revolution  

E-Print Network [OSTI]

structural bel&avior a&d therefore cannot be used for nonlinear analyses. lhe second nðod of dynamic analysis uses numerical integra- tion of the equations of notion wit'bout necessitating a transforma- tion of coordinates. Tne numerical integration...!riinear beam analysis {first vibratory mode only) with the most prc!! ising methods b ing programmed for shell analy! es. Rea- listic test problems are used to evaluate three of the numerical integration procedures as applied in shell of revolution analyses...

Tillerson, Joe Richard

2012-06-07T23:59:59.000Z

2

Nonextensive statistical dynamics applied to wall turbulence  

E-Print Network [OSTI]

We apply a formalism of nonextensive statistical mechanics to experimental wall turbulence data, for the first time to our knowledge. Wind tunnel data for velocity differences a streamwise distance $r$ apart are compared to the prediction from theory as developed by Beck. The simplest theory, in which all free parameters are removed, is found to reproduce statistics for the wall-normal velocity component remarkably well, even for $r$ well beyond the corresponding integral scale, while the corresponding description of the streamwise velocity fluctuations is reasonable at separations below the integral scale. A least-squares 2-parameter fit is performed, and the dependence of the optimum parameter values on wall separation and $r$ is analysed. Both parameters are found to be approximately independent of wall-separation in the logarithmic sub-layer.

Simen Å Ellingsen; Per-Åge Krogstad

2014-02-10T23:59:59.000Z

3

applied algebraic dynamics: Topics by E-print Network  

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

applied algebraic dynamics 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 Algebraic Dynamics...

4

Nonlinear Adaptive Dynamic Inversion Applied to a Generic Hypersonic Vehicle  

E-Print Network [OSTI]

Nonlinear Adaptive Dynamic Inversion Applied to a Generic Hypersonic Vehicle Elizabeth Rollins Conclusions Extensions 3 / 50 #12;Motivation Control of Hypersonic Vehicles · Wide range of flight conditions in hypersonic flight · Three main causes of inlet unstarts: 1 A flow to the inlet that is slower than

Valasek, John

5

Nonlinear Adaptive Dynamic Inversion Applied to a Generic Hypersonic Vehicle  

E-Print Network [OSTI]

Nonlinear Adaptive Dynamic Inversion Applied to a Generic Hypersonic Vehicle Elizabeth Rollins of hypersonic vehicles is challenging because of the wide range of oper- ating conditions encountered and certain aspects unique to high speed flight. A particular safety concern in hypersonic flight is the risk

Valasek, John

6

The instrumented dynamic perforation test applied to a composite shell  

E-Print Network [OSTI]

The instrumented dynamic perforation test applied to a composite shell S. Pattofatto, H. Tsitsiris Wilson, F-94230 Cachan, France Abstract. Perforation tests are commonly used on composites but give limited results. In this study, a single layer of a thermoplastic woven composite is tested at high

Paris-Sud XI, Université de

7

Automation of radiochemical analysis by applying flow  

E-Print Network [OSTI]

of detection systems, including scintillation counting, a-spectrometers, proportional counters, mass spectrometry and spectrophotometry. ª 2010 Published by Elsevier Ltd. Keywords: Flow-analysis technique; Flow

Sánchez, David

8

Lessons Learned in Applying Formal Concept Analysis to Reverse Engineering  

E-Print Network [OSTI]

Lessons Learned in Applying Formal Concept Analysis to Reverse Engineering Gabriela Ar´evalo, St in "International Conference on Formal Concept Analysis (ICFCA '05) (2005)" #12;Lessons Learned in Applying Formal artifacts. In this paper we describe our approach, outline three case studies, and draw various lessons from

Paris-Sud XI, Université de

9

applied transient dynamic: Topics by E-print Network  

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

21 22 23 24 25 Next Page Last Page Topic Index 1 Neural networks with transient state dynamics Astrophysics (arXiv) Summary: We investigate dynamical systems characterized by a...

10

applied systems analysis: Topics by E-print Network  

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

Evgeny Katz 2011-10-08 7 A macro-micro system architecture analysis framework applied to Smart Grid meter data management systems by Sooraj Prasannan. MIT - DSpace Summary: This...

11

DYNAMIC INVARIANTS IN PROTEIN FOLDING PATHWAYS REVEALED BY TENSOR ANALYSIS  

E-Print Network [OSTI]

DYNAMIC INVARIANTS IN PROTEIN FOLDING PATHWAYS REVEALED BY TENSOR ANALYSIS Arvind Ramanathan Lane a spatio-temporal analysis of protein folding pathways. We applied our method to folding simulations of how a protein folds into its functionally relevant conformations. Protein folding pathways span over

Langmead, Christopher James

12

Multivariate Mathematical Morphology applied to Color Image Analysis  

E-Print Network [OSTI]

Chapter 10 Multivariate Mathematical Morphology applied to Color Image Analysis 10.1. Introduction analysis framework, currently fully developed for both binary and gray-level images. Its popularity in the image processing community is mainly due to its rigorous mathematical foundation as well as its inherent

Lefèvre, Sébastien

13

Ris-R-1388(EN) Applied Modal Analysis of Wind  

E-Print Network [OSTI]

Risø-R-1388(EN) Applied Modal Analysis of Wind Turbine Blades Henrik Broen Pedersen, Ole Jesper for wind turbine blades. Different methods to measure the position and adjust the direction of the meas measurement on the same wind turbine blade. Furthermore the flexibility of the test set-up is investigated

14

Dynamical analysis of highly excited molecular spectra  

SciTech Connect (OSTI)

The goal of this program is new methods for analysis of spectra and dynamics of highly excited vibrational states of molecules. In these systems, strong mode coupling and anharmonicity give rise to complicated classical dynamics, and make the simple normal modes analysis unsatisfactory. New methods of spectral analysis, pattern recognition, and assignment are sought using techniques of nonlinear dynamics including bifurcation theory, phase space classification, and quantization of phase space structures. The emphasis is chaotic systems and systems with many degrees of freedom.

Kellman, M.E. [Univ. of Oregon, Eugene (United States)

1993-12-01T23:59:59.000Z

15

A study of the point reactor dynamics equations as applied to large nuclear excursions  

E-Print Network [OSTI]

A STUDY OF THE POINT REACTOR DYNAMICS EQUATIONS AS APPLIED TO LARGE NUCLEAR EXCURSIONS A Thesis By ROBERT TERRELL PERRY, JR, Submitted to the Graduate College of the Texas ARM University xn partial fulfillment of the requirements i...' or the degree of MASTER OF SCIENCE May, 1967 Major Subject: Nuclear Engineering A STUDY OF THE POINT REACTOR DYNAMICS EQUATIONS AS APPLIED TO LARGE NUCLEAR EXCURSIONS A Thesis By ROBERT TERRELL PERRY, JR. Approved as to style and content by...

Perry, Robert Terrell

1967-01-01T23:59:59.000Z

16

IMA Journal of Applied Mathematics (2002) 67, 419439 Modelling thermal front dynamics in microwave heating  

E-Print Network [OSTI]

an electric field is applied to materials with high resistivity, the dipole moments of the molecules alignIMA Journal of Applied Mathematics (2002) 67, 419­439 Modelling thermal front dynamics in microwave July 2000; revised on 6 December 2001] The formation and propagation of thermal fronts in a cylindrical

Xin, Jack

17

Comparative molecular dynamics analysis of tapasin-dependent...  

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

molecular dynamics analysis of tapasin-dependent and -independent MHC class I alleles. Comparative molecular dynamics analysis of tapasin-dependent and -independent MHC class I...

18

Draft of Preliminary Syllabus Applying Geospatial Analysis-Project Based Learning  

E-Print Network [OSTI]

Draft of Preliminary Syllabus Applying Geospatial Analysis- Project Based Learning Listed as, and analysis (2) formulate and evaluate research questions relating to geospatial approaches (3) learn geospatial techniques (4) learn data management, data conversion, and data analysis (5) apply geospatial

Fabrikant, Sara Irina

19

Coupling of a multizone airflow simulation program with computational fluid dynamics for indoor environmental analysis  

E-Print Network [OSTI]

Current design of building indoor environment comprises macroscopIC approaches, such as CONT AM multizone airflow analysis tool, and microscopic approaches that apply Computational Fluid Dynamics (CFD). Each has certain ...

Gao, Yang, 1974-

2002-01-01T23:59:59.000Z

20

Analysis of Dynamic Multiplicity Fluctuations at PHOBOS  

E-Print Network [OSTI]

This paper presents the analysis of the dynamic fluctuations in the inclusive charged particle multiplicity measured by PHOBOS for Au+Au collisions at sqrt(s_NN)=200$GeV within the pseudo-rapidity range of -3analysis is presented, together with the discussion of their physics meaning. Then the procedure for the extraction of dynamic fluctuations is described. Some preliminary results are included to illustrate the correlation features of the fluctuation observable. New dynamic fluctuations results will be available in a later publication.

Zhengwei Chai; for the PHOBOS Collaboration

2005-09-20T23:59:59.000Z

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


21

E-Print Network 3.0 - activation analysis applied Sample Search...  

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

Flexible and Reliable Electronic Commerce Systems Summary: and the underlying TP facility form a framework for dynamic transactional activity processing. By applying the...

22

Semiclassical analysis of quantum dynamics  

E-Print Network [OSTI]

Simulating the molecular dynamics (MD) using classical or semi-classical trajectories provides important details for the understanding of many chemical reactions, protein folding, drug design, and solvation effects. MD simulations using trajectories have achieved great successes in the computer simulations of various systems, but it is difficult to incorporate quantum effects in a robust way. Therefore, improving quantum wavepacket dynamics and incorporating nonadiabatic transitions and quantum effects into classical and semi-classical molecular dynamics is critical as well as challenging. In this paper, we present a MD scheme in which a new set of equations of motion (EOM) are proposed to effectively propagate nuclear trajectories while conserving quantum mechanical energy which is critical for describing quantum effects like tunneling. The new quantum EOM is tested on a one-state one-dimensional and a two-state two-dimensional model nonadiabatic systems. The global quantum force experienced by each trajectory promotes energy redistribution among the bundle of trajectories, and thus helps the individual trajectory tunnel through the potential barrier higher than the energy of the trajectory itself. Construction of the new quantum force and EOM also provides a better way to treat the issue of back-reaction in mixed quantum-classical (MQC) methods, i.e. self-consistency between quantum degrees of freedom (DOF) and classical DOF.

Siyang Yang

2011-11-15T23:59:59.000Z

23

Dynamical System Analysis for a phantom model  

E-Print Network [OSTI]

The paper deals with a dynamical system analysis related to phantom cosmological model . Here gravity is coupled to phantom scalar field having scalar coupling function and a potential. The field equations are reduced to an autonomous dynamical system by a suitable redefinition of the basic variables and assuming some suitable form of the potential function. Finally, critical points are evaluated, their nature have been analyzed and corresponding cosmological scenario has been discussed.

Nilanjana Mahata; Subenoy Chakraborty

2014-04-24T23:59:59.000Z

24

Dynamic analysis of mechanisms by finite elements  

SciTech Connect (OSTI)

The need to increase productivity in order to decrease manufacturing costs lead to an increase in the working speeds of machines and mechanical systems used in manufacturing. A method is presented for investigating the dynamics of mechanisms with elastic links. Finite element method is used in the formulation of the dynamic problem. Modal transformation is used in order to reduce the number of equations of motion. Using the presented technique, elastic and rigid body motions of mechanism links are solved simultaneously. The presented method may be applied to spatial and open loop mechanisms including robot manipulators as well.

Botsali, F.M.; Uenuevar, A. [Selcuk Univ., Konya (Turkey). Mechanical Engineering Dept.

1996-11-01T23:59:59.000Z

25

analysis naa applied: Topics by E-print Network  

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

Websites Summary: barrier (SBA), fault tree (FTA) and failure mode and effect analysis (FMEA) into one method. Our approach Analysis (FTA), Failure Mode and Effect Analysis (FMEA),...

26

Dynamic Event Tree Analysis Through RAVEN  

SciTech Connect (OSTI)

Conventional Event-Tree (ET) based methodologies are extensively used as tools to perform reliability and safety assessment of complex and critical engineering systems. One of the disadvantages of these methods is that timing/sequencing of events and system dynamics is not explicitly accounted for in the analysis. In order to overcome these limitations several techniques, also know as Dynamic Probabilistic Risk Assessment (D-PRA), have been developed. Monte-Carlo (MC) and Dynamic Event Tree (DET) are two of the most widely used D-PRA methodologies to perform safety assessment of Nuclear Power Plants (NPP). In the past two years, the Idaho National Laboratory (INL) has developed its own tool to perform Dynamic PRA: RAVEN (Reactor Analysis and Virtual control ENvironment). RAVEN has been designed in a high modular and pluggable way in order to enable easy integration of different programming languages (i.e., C++, Python) and coupling with other application including the ones based on the MOOSE framework, developed by INL as well. RAVEN performs two main tasks: 1) control logic driver for the new Thermo-Hydraulic code RELAP-7 and 2) post-processing tool. In the first task, RAVEN acts as a deterministic controller in which the set of control logic laws (user defined) monitors the RELAP-7 simulation and controls the activation of specific systems. Moreover, RAVEN also models stochastic events, such as components failures, and performs uncertainty quantification. Such stochastic modeling is employed by using both MC and DET algorithms. In the second task, RAVEN processes the large amount of data generated by RELAP-7 using data-mining based algorithms. This paper focuses on the first task and shows how it is possible to perform the analysis of dynamic stochastic systems using the newly developed RAVEN DET capability. As an example, the Dynamic PRA analysis, using Dynamic Event Tree, of a simplified pressurized water reactor for a Station Black-Out scenario is presented.

A. Alfonsi; C. Rabiti; D. Mandelli; J. Cogliati; R. A. Kinoshita; A. Naviglio

2013-09-01T23:59:59.000Z

27

Dynamic Analysis of Fuel Cycle Transitioning  

SciTech Connect (OSTI)

This paper examines the time-dependent dynamics of transitioning from a once-through fuel cycle to a closed fuel cycle. The once-through system involves only Light Water Reactors (LWRs) operating on uranium oxide fuel UOX), while the closed cycle includes both LWRs and fast spectrum reactors (FRs) in either a single-tier system or two-tier fuel system. The single-tier system includes full transuranic recycle in FRs while the two-tier system adds one pass of mixed oxide uranium-plutonium (MOX U-Pu) fuel in the LWR. While the analysis primarily focuses on burner fast reactors, transuranic conversion ratios up to 1.0 are assessed and many of the findings apply to any fuel cycle transitioning from a thermal once-through system to a synergistic thermal-fast recycle system. These findings include uranium requirements for a range of nuclear electricity growth rates, the importance of back end fuel cycle facility timing and magnitude, the impact of employing a range of fast reactor conversion ratios, system sensitivity to used fuel cooling time prior to recycle, impacts on a range of waste management indicators, and projected electricity cost ranges for once-through, single-tier and two-tier systems. The study confirmed that significant waste management benefits can be realized as soon as recycling is initiated, but natural uranium savings are minimal in this century. The use of MOX in LWRs decouples the development of recycle facilities from fast reactor fielding, but also significantly delays and limits fast reactor deployment. In all cases, fast reactor deployment was significantly below than predicted by static equilibrium analyses.

Brent Dixon; Steve Piet; David Shropshire; Gretchen Matthern

2009-09-01T23:59:59.000Z

28

analysis structural dynamics: Topics by E-print Network  

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

computational dynamical model and with experiments E approach. An extension to the probabilistic case of the input error methodology for modal analysis dynamical systems with...

29

Structural Equation Modelling for Causal Analysis Applied to Transport Systems  

E-Print Network [OSTI]

barrier (SBA), fault tree (FTA) and failure mode and effect analysis (FMEA) into one method. Our approach Analysis (FTA), Failure Mode and Effect Analysis (FMEA), Event Tree Analysis (ETA) or Safety Barrier]). The probably most familiar methods FTA and FMEA are widely used in industry due to their intuitive

Schlingloff, Holger

30

E-Print Network 3.0 - applied ecosystem analysis Sample Search...  

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

life cycle assessment analysis (LCA), the article... of the problems with LCA. Linking industrial models with spatially explicit, dynamic and site-specific ecosystem......

31

applying analysis technology: Topics by E-print Network  

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

Informationstechnologie; In Der Medizin; Thomas M. Lehmann Klaus Spitzer 110 Technology assessment and market analysis of solid state ultracapacitors . Open Access...

32

Measurement uncertainty analysis techniques applied to PV performance measurements  

SciTech Connect (OSTI)

The purpose of this presentation is to provide a brief introduction to measurement uncertainty analysis, outline how it is done, and illustrate uncertainty analysis with examples drawn from the PV field, with particular emphasis toward its use in PV performance measurements. The uncertainty information we know and state concerning a PV performance measurement or a module test result determines, to a significant extent, the value and quality of that result. What is measurement uncertainty analysis? It is an outgrowth of what has commonly been called error analysis. But uncertainty analysis, a more recent development, gives greater insight into measurement processes and tests, experiments, or calibration results. Uncertainty analysis gives us an estimate of the I interval about a measured value or an experiment`s final result within which we believe the true value of that quantity will lie. Why should we take the time to perform an uncertainty analysis? A rigorous measurement uncertainty analysis: Increases the credibility and value of research results; allows comparisons of results from different labs; helps improve experiment design and identifies where changes are needed to achieve stated objectives (through use of the pre-test analysis); plays a significant role in validating measurements and experimental results, and in demonstrating (through the post-test analysis) that valid data have been acquired; reduces the risk of making erroneous decisions; demonstrates quality assurance and quality control measures have been accomplished; define Valid Data as data having known and documented paths of: Origin, including theory; measurements; traceability to measurement standards; computations; uncertainty analysis of results.

Wells, C.

1992-10-01T23:59:59.000Z

33

Utility concepts applied to the socio-economic subregionization analysis  

E-Print Network [OSTI]

and, can be grouped into a single factor. These factors usually are independent of one another and may readily be used. to represent all the essential information of the original set of varia- bles. The reduction of the number of variables can... the most important information contained in the original data. As pointed out by Hummel, factor analysis has 40 these distinguishing characteristics: 1 . Factor analysis can separate the interrela- tionship among the phenomena into functional patterns...

Hsieh, Joseph Ching-Huei

1973-01-01T23:59:59.000Z

34

Loosely Annotated Bibiolography: recommended by Applied Environmental Decision Analysis researchers (June-July 2011) and  

E-Print Network [OSTI]

Loosely Annotated Bibiolography: recommended by Applied Environmental Decision Analysis researchers-structured models are even more likely to collapse. Risks and decisions for conservation and environmental management (Burgman and Possingham 2000) Population Viability Analysis (PVA) is a useful tool

35

Loosely Annotated Bibiolography: recommended by Applied Environmental Decision Analysis researchers (June-July 2011)  

E-Print Network [OSTI]

Loosely Annotated Bibiolography: recommended by Applied Environmental Decision Analysis researchers to collapse. Risks and decisions for conservation and environmental management (Burgman and Possingham 2000) Population Viability Analysis (PVA) is a useful tool for conservation planning and population management

36

AIAA 20010064 Multi-Flexible-Body Dynamic Analysis of  

E-Print Network [OSTI]

was first presented by Warmbrodt and Friedmann.5 The cou- pled rotor/tower dynamics of wind turbineAIAA 2001­0064 Multi-Flexible-Body Dynamic Analysis of Horizontal-Axis Wind Turbines Mayuresh J-0150 ABSTRACT A dynamic stability analysis is presented for a horizontal-axis wind turbine modeled as a multi

Patil, Mayuresh

37

Current Human Reliability Analysis Methods Applied to Computerized Procedures  

SciTech Connect (OSTI)

Computerized procedures (CPs) are an emerging technology within nuclear power plant control rooms. While CPs have been implemented internationally in advanced control rooms, to date no US nuclear power plant has implemented CPs in its main control room (Fink et al., 2009). Yet, CPs are a reality of new plant builds and are an area of considerable interest to existing plants, which see advantages in terms of enhanced ease of use and easier records management by omitting the need for updating hardcopy procedures. The overall intent of this paper is to provide a characterization of human reliability analysis (HRA) issues for computerized procedures. It is beyond the scope of this document to propose a new HRA approach or to recommend specific methods or refinements to those methods. Rather, this paper serves as a review of current HRA as it may be used for the analysis and review of computerized procedures.

Ronald L. Boring

2012-06-01T23:59:59.000Z

38

Dynamical Systems and Applications of Nonlinear Functional Analysis to Dynamical Systems  

E-Print Network [OSTI]

Dynamical Systems and Applications of Nonlinear Functional Analysis to Dynamical Systems Meirong consists of three parts. In Part 1 we introduce some basic concepts in dynamical systems, including limit sets, nonwandering sets, topological conjugacy, clas- sification of discrete dynamical systems under

Zhang, Meirong

39

Grid embedment as applied to viscous transonic airfoil flowfield analysis  

E-Print Network [OSTI]

Journal, Vol. 18, No. 1, January, 1980, pp, 103-109. 6. Carlson, L. A. , "Inverse Transonic Airfoil Design Including Viscous Interaction, " NASA CP-2001, Vol. 4, 1976, pp. 1387-1395. 7. Steger, J. L. , and Lomax, H. , "Transonic Flow about Two... Mechanics, 1975, pp. 384-414. 9. Carlson, L. A. , "Transonic Airfoil Analysis and Design Using Cartesian Coordinates, " AIAA Journal of Aircraft, Vol. 13, No. 5, May, 1976, pp. 349-356. 10. White, Frank M. , Viscous Fluid Flow, McGraw-Hill, New York...

Reed, Christopher L.

1981-01-01T23:59:59.000Z

40

Multivariate calibration applied to the quantitative analysis of infrared spectra  

SciTech Connect (OSTI)

Multivariate calibration methods are very useful for improving the precision, accuracy, and reliability of quantitative spectral analyses. Spectroscopists can more effectively use these sophisticated statistical tools if they have a qualitative understanding of the techniques involved. A qualitative picture of the factor analysis multivariate calibration methods of partial least squares (PLS) and principal component regression (PCR) is presented using infrared calibrations based upon spectra of phosphosilicate glass thin films on silicon wafers. Comparisons of the relative prediction abilities of four different multivariate calibration methods are given based on Monte Carlo simulations of spectral calibration and prediction data. The success of multivariate spectral calibrations is demonstrated for several quantitative infrared studies. The infrared absorption and emission spectra of thin-film dielectrics used in the manufacture of microelectronic devices demonstrate rapid, nondestructive at-line and in-situ analyses using PLS calibrations. Finally, the application of multivariate spectral calibrations to reagentless analysis of blood is presented. We have found that the determination of glucose in whole blood taken from diabetics can be precisely monitored from the PLS calibration of either mind- or near-infrared spectra of the blood. Progress toward the non-invasive determination of glucose levels in diabetics is an ultimate goal of this research. 13 refs., 4 figs.

Haaland, D.M.

1991-01-01T23:59:59.000Z

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


41

Coupled Dynamic Analysis of Multiple Unit Floating Offshore Wind Turbine  

E-Print Network [OSTI]

In the present study, a numerical simulation tool has been developed for the rotor-floater-tether coupled dynamic analysis of Multiple Unit Floating Offshore Wind Turbine (MUFOWT) in the time domain including aero-blade-tower dynamics and control...

Bae, Yoon Hyeok

2013-04-23T23:59:59.000Z

42

Numerical tools applied to power reactor noise analysis  

SciTech Connect (OSTI)

In this paper, the development of numerical tools allowing the determination of the neutron noise in power reactors is reported. These tools give the space-dependence of the fluctuations of the neutron flux induced by fluctuating properties of the medium in the 2-group diffusion approximation and in a 2-dimensional representation of heterogeneous systems. Some applications of these tools to power reactor noise analysis are then described. These applications include the unfolding of the noise source from the resulting neutron noise measured at a few discrete locations throughout the core, the study of the space-dependence of the Decay Ratio in Boiling Water Reactors, the noise-based estimation of the Moderator Temperature Coefficient of reactivity in Pressurized Water Reactors, the modeling of shell-mode core barrel vibrations in Pressurized Water Reactors, and the investigation of the validity of the point-kinetic approximation in subcritical systems. (authors)

Demaziere, C.; Pazsit, I. [Chalmers Univ. of Technology, Dept. of Nuclear Engineering, SE-412 96 Goeteborg (Sweden)

2006-07-01T23:59:59.000Z

43

NO. RIV. NO. Structural/Dynamics Analysis Report  

E-Print Network [OSTI]

NO. RIV. NO. ATM-871 Structural/Dynamics Analysis Report PAGI 1 OF 3 DATI May 15, 1970 STRUCTURAL/DYNAMICS ANALYSIS REPORT APOLLO 14 LRRR Prepared by: Approved by: 7).t.--nb. ~ #12;NO. REV. NO. ATM-871 ~. 2PAGI OJI-1 thru 3-40 #12;RI!V. MO. · I ~ NO. ATM-871 ..AGI 3 0, 3 Structural/Dynamics Analysis Report DATI May 15

Rathbun, Julie A.

44

Applied & Computational MathematicsChallenges for the Design and Control of Dynamic Energy Systems  

SciTech Connect (OSTI)

The Energy Independence and Security Act of 2007 (EISA) was passed with the goal 'to move the United States toward greater energy independence and security.' Energy security and independence cannot be achieved unless the United States addresses the issue of energy consumption in the building sector and significantly reduces energy consumption in buildings. Commercial and residential buildings account for approximately 40% of the U.S. energy consumption and emit 50% of CO{sub 2} emissions in the U.S. which is more than twice the total energy consumption of the entire U.S. automobile and light truck fleet. A 50%-80% improvement in building energy efficiency in both new construction and in retrofitting existing buildings could significantly reduce U.S. energy consumption and mitigate climate change. Reaching these aggressive building efficiency goals will not happen without significant Federal investments in areas of computational and mathematical sciences. Applied and computational mathematics are required to enable the development of algorithms and tools to design, control and optimize energy efficient buildings. The challenge has been issued by the U.S. Secretary of Energy, Dr. Steven Chu (emphasis added): 'We need to do more transformational research at DOE including computer design tools for commercial and residential buildings that enable reductions in energy consumption of up to 80 percent with investments that will pay for themselves in less than 10 years.' On July 8-9, 2010 a team of technical experts from industry, government and academia were assembled in Arlington, Virginia to identify the challenges associated with developing and deploying newcomputational methodologies and tools thatwill address building energy efficiency. These experts concluded that investments in fundamental applied and computational mathematics will be required to build enabling technology that can be used to realize the target of 80% reductions in energy consumption. In addition the finding was that there are tools and technologies that can be assembled and deployed in the short term - the next 3-5 years - that can be used to significantly reduce the cost and time effective delivery of moderate energy savings in the U.S. building stock. Simulation tools, which are a core strength of current DOE computational research programs, provide only a part of the answer by providing a basis for simulation enabled design. New investments will be required within a broad dynamics and control research agenda which must focus on dynamics, control, optimization and simulation of multi-scale energy systems during design and operation. U.S. investments in high performance and high productivity computing (HP2C) should be leveraged and coupled with advances in dynamics and control to impact both the existing building stock through retrofits and also new construction. The essential R&D areas requiring investment are: (1) Characterizing the Dynamics of Multi-scale Energy Systems; (2) Control and Optimization Methodologies of Multi-scale Energy Systems Under Uncertainty; and (3) Multiscale Modeling and Simulation Enabled Design and Operation. The concept of using design and control specific computational tools is a new idea for the building industry. The potential payoffs in terms of accelerated design cycle times, performance optimization and optimal supervisory control to obtain and maintain energy savings are huge. Recent advances in computational power, computer science, and mathematical algorithms offer the foundations to address the control problems presented by the complex dynamics of whole building systems. The key areas for focus and associated metrics with targets for establishing competitiveness in energy efficient building design and operation are: (1) Scalability - Current methodology and tools can provide design guidance for very low energy buildings in weeks to months; what is needed is hours to days. A 50X improvement is needed. (2) Installation and commissioning - Current methodology and tools can target a three month window for commissioni

Brown, D L; Burns, J A; Collis, S; Grosh, J; Jacobson, C A; Johansen, H; Mezic, I; Narayanan, S; Wetter, M

2011-03-10T23:59:59.000Z

45

Fluid dynamics topics in bloodstain pattern analysis: Comparative review and research opportunities  

E-Print Network [OSTI]

Review Fluid dynamics topics in bloodstain pattern analysis: Comparative review and research a Department of Mechanical Engineering, Iowa State University of Science and Technology, Ames, IA 50011, USA b Engineering & Applied Science, Dalhousie University, Halifax, NS B3H 4R2, Canada d Department of Mechanical

Attinger, Daniel

46

Dynamic Analysis of Mobile Device Applications  

SciTech Connect (OSTI)

The On-Device Dynamic Analysis of Mobile Applications (ODAMA) project was started in an effort to protect mobile devices used in Industrial Control Systems (ICS) from cyber attack. Because mobile devices hide as much of the “computer” as possible, the user’s ability to assess the software running on their system is limited. The research team chose Google’s Android platform for this initial research because it is open source and it would give us freedom in our approach, including the ability to modify the mobile device’s operating system itself. The research team concluded that a Privileged Application was the right approach, and the result was ODAMA. This project is an important piece of the work to secure the expanding use of mobile devices with our nation’s critical infrastructure.

Corey Thuen

2013-01-01T23:59:59.000Z

47

Numerical tools applied to power reactor noise analysis Christophe Demazie`re*, Imre Pazsit  

E-Print Network [OSTI]

Review Numerical tools applied to power reactor noise analysis Christophe Demazie`re*, Imre Pa and application of the numerical tools employed. The code that was developed yields the space and non-critical systems with an external source. Some appli- cations of these tools to power reactor

Pázsit, Imre

48

LASER SCANNING AND NOISE REDUCTION APPLIED TO 3D ROAD SURFACE ANALYSIS  

E-Print Network [OSTI]

LASER SCANNING AND NOISE REDUCTION APPLIED TO 3D ROAD SURFACE ANALYSIS Thorsten Schulz and Hilmar, EAWAG Email: michele.steiner@eawag.ch Abstract: Terrestrial laser scanning was applied to acquire 3D the catchment area of a road with respect to a pilot plant. As laser scanning requires only a few minutes

Giger, Christine

49

A Multiscale Analysis of Dynamic Wetting  

E-Print Network [OSTI]

Williams, B. C. (2008). Engineering Fluid Mechanics. Wiley,Thermo-Fluid Dynamics: In Materials Science and Engineering.Fluid Dynamics. McGraw-Hill Sci- ence/Engineering/Math, 1st

Minaki, Hiroyuki

2013-01-01T23:59:59.000Z

50

DYNAMIC MECHANICAL ANALYSIS CHARACTERIZATION OF GLOVEBOX GLOVES  

SciTech Connect (OSTI)

As part of the characterization of various glovebox glove material from four vendors, the permeability of gas through each type as a function of temperature was determined and a discontinuity in the permeability with temperature was revealed. A series of tests to determine the viscoelastic properties of the glove materials as a function of temperature using Dynamic Mechanical Analysis (DMA) was initiated. The glass transition temperature and the elastic and viscoelastic properties as a function of temperature up to maximum use temperature were determined for each glove material. The glass transition temperatures of the gloves were -60 C for butyl, -30 C for polyurethane, -16 C Hypalon{reg_sign}, - 16 C for Viton{reg_sign}, and -24 C for polyurethane-Hypalon{reg_sign}. The glass transition was too complex for the butyl-Hypalon{reg_sign} and butyl-Viton{reg_sign} composite gloves to be characterized by a single glass transition temperature. All of the glass transition temperatures exceed the vendor projected use temperatures.

Korinko, P.

2012-02-29T23:59:59.000Z

51

Experimental ferrite core circuit analysis and design applied to an analog/digital converter  

E-Print Network [OSTI]

EXPKRflIENTAL FERRITE CORE CIRCUIT ANALYSIS A/4i) CESIGN APPLI ED' TO AN ANALOG+I QITAL -CCWERTER I I 'O' Thaaka RCSERT, NI. LL'I AN HQQAKS:-. , ";, , '. . :. . '. -:. '"":, , ':-. ', . -' ". ' t, . I I I' I, ' . Sobalttad, ta tb ~ Qra... , Na'fir. Sabjaat& ' Eiaktr leal EnCInaaring . EXPERIIIENTAL FERRITE CORE CIRCUIT ANALYSIS AND DESIGN APPLIED TO 'AN AMALGG/DIGITAL CONVERTER f 1 A, . Thea I'a t ROBERT Wl LI. I Al'Jl. HUGHES (Goober, ) ' (Me@bar) ' A'yprived . a'o . . to a4...

Hughes, Robert William

1965-01-01T23:59:59.000Z

52

E-Print Network 3.0 - applying dynamic flow-density Sample Search...  

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

Collection: Energy Storage, Conversion and Utilization 17 Dynamic Origin-Destination Demand Flow Estimation under Congested Traffic Conditions Xuesong Zhou Summary: for the...

53

Statistical analysis of a dynamical multifragmentation path  

E-Print Network [OSTI]

A microcanonical multifragmentation model (MMM) is used for investigating whether equilibration really occurs in the dynamical evolution of two heavy ion collisions simulated via a stochastic mean field approach (SMF). The standard deviation function between the dynamically obtained freeze-out fragment distributions corresponding to the reaction $^{129}$Xe+$^{119}$Sn at 32 MeV/u and the MMM ones corresponding to a wide range of mass, excitation energy, freeze-out volume and nuclear level density cut-off parameter shows a unique minimum. A distinct statistically equilibrated stage is identified in the dynamical evolution of the system.

A. H. Raduta; M. Colonna; V. Baran; M. Di Toro

2006-02-20T23:59:59.000Z

54

Performance Analysis of Photovoltaic Cell with Dynamic PHEV Loads  

E-Print Network [OSTI]

Performance Analysis of Photovoltaic Cell with Dynamic PHEV Loads F. R. Islam, H. R. Pota, M. S. Rahman and M. S. Ali Abstract--This paper presents the dynamics of photovoltaic (PV) cell with Plug for charging PHEVs with PV cell where PHEVs load are modelled based on third order battery model. System

Pota, Himanshu Roy

55

Statistical mechanical analysis of the dynamics of learning in perceptrons  

E-Print Network [OSTI]

with constant learning rate 2.5. Theory versus simulations 3. On-line learning: complete training setsStatistical mechanical analysis of the dynamics of learning in perceptrons C. W. H. MACE and A. C to analyse the dynamics of various classes of supervised learning rules in perceptrons. The character

Coolen, ACC "Ton"

56

Dynamical Analysis of Evolved Agents: A Primer Randall D. Beer  

E-Print Network [OSTI]

1 Dynamical Analysis of Evolved Agents: A Primer Randall D. Beer Cognitive Science Program School: Randall D. Beer Phone: (812) 856-0873 Cognitive Science Program Fax: (812) 855-1086 1910 E. 10th St. ­ 840

Beer, Randall D.

57

Regular Symbolic Analysis of Dynamic Networks of Pushdown Systems  

E-Print Network [OSTI]

Regular Symbolic Analysis of Dynamic Networks of Pushdown Systems Ahmed Bouajjani1, Markus M¨uller-Olm Bouajjani, Markus M¨uller-Olm, and Tayssir Touili parallel calls. In a multithreaded program such a command

Müller-Olm, Markus

58

Regular Symbolic Analysis of Dynamic Networks of Pushdown Systems  

E-Print Network [OSTI]

Regular Symbolic Analysis of Dynamic Networks of Pushdown Systems Ahmed Bouajjani 1 , Markus MË?uller­Olm #12; 474 Ahmed Bouajjani, Markus MË?uller­Olm, and Tayssir Touili parallel calls. In a multithreaded

Müller-Olm, Markus

59

Regular Symbolic Analysis of Dynamic Networks of Pushdown Systems  

E-Print Network [OSTI]

Regular Symbolic Analysis of Dynamic Networks of Pushdown Systems Ahmed Bouajjani 1 , Markus MË?uller­Olm Bouajjani, Markus MË?uller­Olm, and Tayssir Touili parallel calls. In a multithreaded program such a command

Touili, Tayssir

60

Regular Symbolic Analysis of Dynamic Networks of Pushdown Systems  

E-Print Network [OSTI]

Regular Symbolic Analysis of Dynamic Networks of Pushdown Systems Ahmed Bouajjani1, Markus M¨uller-Olm #12;474 Ahmed Bouajjani, Markus M¨uller-Olm, and Tayssir Touili parallel calls. In a multithreaded

Müller-Olm, Markus

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


61

STABILITY ANALYSIS OF INTERCONNECTED POWER SYSTEMS COUPLED WITH MARKET DYNAMICS  

E-Print Network [OSTI]

STABILITY ANALYSIS OF INTERCONNECTED POWER SYSTEMS COUPLED WITH MARKET DYNAMICS F.L. Alvarado1 J of generators and network interconnections. This paper examines questions of stability in such coupled systems

62

E-Print Network 3.0 - applying non-linear dynamics Sample Search...  

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

of the International Conference on Modeling and Simulation 2006 28 30 August 2006, Konya, TURKEY Summary: the predistortion approach is applied to the linearization of highly...

63

Wave excited cable mooring dynamics by modal analysis  

E-Print Network [OSTI]

klAVE EXCITED CABLE MOORING DYNAMICS BY MODAL ANALYSIS A Thesis RICHARD EARL DAVIS Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE December 1977 Major... Subject: Civil Engineering WAVE EXCITED CABLE MOORING DYNAMICS BY MODAL ANALYSIS A Thesis by RICHARD EARL DAVIS Approved as to style and content by: (:( '. t(( (Co ? Chairman of Committee) 0~s (Co-Chairnin+of Committee) (Head of' Departme t...

Davis, Richard Earl

2012-06-07T23:59:59.000Z

64

Interpolating dynamical systems: Applications to experimental data analysis  

SciTech Connect (OSTI)

Experimental data from Rayleigh-Benard convection is used to demonstrate new techniques in data analysis. The data, in the form of Poincare sections, are fit to a map of the plane as a function of a system control parameter. This provides a very useful method for interpolating experimental low-dimensional dynamical systems. The fitted map can then be studied using numerical bifurcation methods or other nonlinear dynamics analysis techniques. 16 refs., 3 figs., 1 tab.

Ecke, R.E.

1991-01-01T23:59:59.000Z

65

Nonlinear viscoelastic characterization of thin films using dynamic mechanical analysis  

E-Print Network [OSTI]

NONLINEAR VISCOELASTIC CHARACTERIZATION OF THIN FILMS USING DYNAMIC MECHANICAL ANALYSIS A Thesis by DEBBIE FLOWERS PAYNE 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 AUGUST 1993 Major Subject: Aerospace Engineering NONLINEAR VISCOELASTIC CHARACTERIZATION OF THIN FILMS USING DYNAMIC MECHANICAL ANALYSIS A Thesis by DEBBIE FLOWERS PAYNE Approved as to style and content by: Thomas W...

Payne, Debbie Flowers

1993-01-01T23:59:59.000Z

66

The Ford-Pfenning Quantum Inequalities(QI) Analysis applied to the Natario Warp Drive Spacetime.  

E-Print Network [OSTI]

The Ford-Pfenning Quantum Inequalities(QI) Analysis applied to the Natario Warp Drive Spacetime. Fernando Loup Residencia de Estudantes Universitas Lisboa Portugal October 15, 2012 Abstract Warp Drives Relativity. There are at the present moment two known solutions: The Alcubierre warp drive discovered in 1994

Paris-Sud XI, Université de

67

Extending the Borders of Accident Investigation: Applying Novel Analysis Techniques to the Loss of the Brazilian  

E-Print Network [OSTI]

-1- Extending the Borders of Accident Investigation: Applying Novel Analysis Techniques to the Loss. In consequence, it is becoming increasingly difficult to identify the causes of incidents and accidents back to the development of a number of novel accident investigation techniques. Most of these approaches are intended

Johnson, Chris

68

Kinematic and Dynamic Analysis of a Surgical Robot Positioning Arm  

E-Print Network [OSTI]

Kinematic and Dynamic Analysis of a Surgical Robot Positioning Arm Diana C.W. Friedman A thesis Analysis of a Surgical Robot Positioning Arm Diana C.W. Friedman Chair of the Supervisory Committee, a small form-factor surgical robot. To increase the RAVEN's workspace and decrease setup time, the C-Arm

69

Dynamic rich-data capture and analysis of debugging processes  

E-Print Network [OSTI]

Dynamic rich-data capture and analysis of debugging processes Pablo Romero, Benedict du Boulay and debugging through the capture and analysis of rich process data. A software debugging environment that comprises comprehension of the program, troubleshooting ability and knowledge of the computerised working

Romero, Pablo

70

Institute for Critical Technology and Applied Science Seminar Series Interfacial Structure, Dynamics, and  

E-Print Network [OSTI]

, Dynamics, and Transport in Polyelectrolyte Membrane Materials for Fuel Cells with Kirt Page, Polymers to correlate polymer structure and motions to ion and water transport. Currently, Kirt is serving a one:30 pm ICTAS Room 310, Stanger Street Fuel cells based on polymer electrolyte membranes (PEM) show

Crawford, T. Daniel

71

Applying observations of work activity in designing prototype data analysis tools  

SciTech Connect (OSTI)

Designers, implementers, and marketers of data analysis tools typically have different perspectives than users. Consequently, data analysis often find themselves using tools focused on graphics and programming concepts rather than concepts which reflect their own domain and the context of their work. Some user studies focus on usability tests late in development; others observe work activity, but fail to show how to apply that knowledge in design. This paper describes a methodology for applying observations of data analysis work activity in prototype tool design. The approach can be used both in designing improved data analysis tools, and customizing visualization environments to specific applications. We present an example of user-centered design for a prototype tool to cull large data sets. We revisit the typical graphical approach of animating a large data set from the point of view of an analysis who is culling data. Field evaluations using the prototype tool not only revealed valuable usability information, but initiated in-depth discussions about user`s work, tools, technology, and requirements.

Springmeyer, R.R.

1993-07-06T23:59:59.000Z

72

Roughness analysis applied to niobium thin films grown on MgO(001) surfaces for superconducting radio frequency cavity applications  

SciTech Connect (OSTI)

This paper describes surface studies to address roughness issues inherent to thin film coatings deposited onto superconducting radio frequency (SRF) cavities. This is particularly relevant for multilayered thin film coatings that are being considered as a possible scheme to overcome technical issues and to surpass the fundamental limit of ?50??MV/m accelerating gradient achievable with bulk niobium. In 2006, a model by Gurevich [ Appl. Phys. Lett. 88 012511 (2006)] was proposed to overcome this limit that involves coating superconducting layers separated by insulating ones onto the inner walls of the cavities. Thus, we have undertaken a systematic effort to understand the dynamic evolution of the Nb surface under specific deposition thin film conditions onto an insulating surface in order to explore the feasibility of the proposed model. We examine and compare the morphology from two distinct Nb/MgO series, each with its own epitaxial registry, at very low growth rates and closely examine the dynamical scaling of the surface features during growth. Further, we apply analysis techniques such as power spectral density to the specific problem of thin film growth and roughness evolution to qualify the set of deposition conditions that lead to successful SRF coatings.

D. B. Beringer, W. M. Roach, C. Clavero, C. E. Reece, R. A. Lukaszew

2013-02-01T23:59:59.000Z

73

Decision Analysis of Dynamic Spectrum Access Rules  

SciTech Connect (OSTI)

A current trend in spectrum regulation is to incorporate spectrum sharing through the design of spectrum access rules that support Dynamic Spectrum Access (DSA). This paper develops a decision-theoretic framework for regulators to assess the impacts of different decision rules on both primary and secondary operators. We analyze access rules based on sensing and exclusion areas, which in practice can be enforced through geolocation databases. Our results show that receiver-only sensing provides insufficient protection for primary and co-existing secondary users and overall low social welfare. On the other hand, using sensing information between the transmitter and receiver of a communication link, provides dramatic increases in system performance. The performance of using these link end points is relatively close to that of using many cooperative sensing nodes associated to the same access point and large link exclusion areas. These results are useful to regulators and network developers in understanding in developing rules for future DSA regulation.

Juan D. Deaton; Luiz A. DaSilva; Christian Wernz

2011-12-01T23:59:59.000Z

74

Air Ingress Benchmarking with Computational Fluid Dynamics Analysis  

E-Print Network [OSTI]

1 Air Ingress Benchmarking with Computational Fluid Dynamics Analysis Tieliang Zhai Professor by the US Nuclear Regulatory Commission #12;2 Air Ingress Accident Objectives and Overall Strategy: Depresurization Pure Diffusion Natural Convection Challenging: Natural convection Multi-component Diffusion (air

75

Air Ingress Benchmarking with Computational Fluid Dynamics Analysis  

E-Print Network [OSTI]

Air Ingress Benchmarking with Computational Fluid Dynamics Analysis Andrew C. Kadak Department District Beijing, China September 22-24, 2004 Abstract Air ingress accident is a complicated accident scenario is compounded by multiple physical phenomena that are involved in the air ingress event

76

Time-domain Dynamics and Stability Analysis of Optoelectronic Oscillators  

E-Print Network [OSTI]

Time-domain Dynamics and Stability Analysis of Optoelectronic Oscillators based on Whispering and Yanne K. Chembo Optoelectronic oscillators (OEOs) are microwave photonics systems in- tended to generate in "" #12;1 Introduction The optoelectronic oscillator (OEO) is nowadays considered as one of the most

Paris-Sud XI, Université de

77

Coupled Waveform Analysis in Dynamic Characterization of Lossy Solids  

E-Print Network [OSTI]

and Anjun Lu2 Abstract: By means of the viscoelastic wave propagation model for a homogeneous semiCoupled Waveform Analysis in Dynamic Characterization of Lossy Solids Bojan B. Guzina, M.ASCE,1-infinite solid, a rational analytical and computational framework is developed for nonintrusive, wave

Guzina, Bojan

78

Beyond Streams and Graphs: Dynamic Tensor Analysis Dacheng Tao  

E-Print Network [OSTI]

not necessarily scale up, let alone operate on semi-infinite streams. Thus, we introduce the dynamic ten- sor nodes; all of them are identical or closely related to eigen analysis or derivatives; 4) social networks- zero entries in the adjacency matrix. The network value of a customer [13] has close ties to the first

79

St h ti d i l i fStochastic dynamic analysis of offshore wind turbines  

E-Print Network [OSTI]

1 St h ti d i l i fStochastic dynamic analysis of offshore wind turbines ­ with emphasis on fatigue analysis of offshore bottom-fixed wind turbines · Modelling and dynamic analysis of floating wind turbines ­ Stochastic dynamic analysis of offshore wind turbines; mooring system for wave energy converters · 2010 8

Nørvåg, Kjetil

80

RAVEN, a New Software for Dynamic Risk Analysis  

SciTech Connect (OSTI)

RAVEN is a generic software driver to perform parametric and probabilistic analysis of code simulating complex systems. Initially developed to provide dynamic risk analysis capabilities to the RELAP-7 code [1] is currently being generalized with the addition of Application Programming Interfaces (APIs). These interfaces are used to extend RAVEN capabilities to any software as long as all the parameters that need to be perturbed are accessible by inputs files or directly via python interfaces. RAVEN is capable to investigate the system response probing the input space using Monte Carlo, grid strategies, or Latin Hyper Cube schemes, but its strength is its focus toward system feature discovery like limit surfaces separating regions of the input space leading to system failure using dynamic supervised learning techniques. The paper will present an overview of the software capabilities and their implementation schemes followed by same application examples.

Cristian Rabiti; Andrea Alfonsi; Joshua Cogliati; Diego Mandelli; Robert Kinoshita

2014-06-01T23:59:59.000Z

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


81

A laser-induced repetitive fast neutron source applied for gold activation analysis  

SciTech Connect (OSTI)

A laser-induced repetitively operated fast neutron source was developed for applications in laser-driven nuclear physics research. The developed neutron source, which has a neutron yield of approximately 4 Multiplication-Sign 10{sup 5} n/pulse and can be operated up to a pulse repetition rate of 10 Hz, was applied for a gold activation analysis. Relatively strong delayed gamma spectra of the activated gold were measured at 333 keV and 355 keV, and proved the possibility of the neutron source for activation analyses. In addition, the nuclear reactions responsible for the measured gamma spectra of gold were elucidated by the 14 MeV fast neutrons resulting from the D(t,n)He{sup 4} nuclear reaction, for which the required tritium originated from the primary fusion reaction, D(d,p)T{sup 3}.

Lee, Sungman; Park, Sangsoon; Lee, Kitae; Cha, Hyungki [Quantum Optics Division, Korea Atomic Energy Research Institute, Daejeon 305-600 (Korea, Republic of)

2012-12-15T23:59:59.000Z

82

Computational methods for viscoplastic dynamic fracture mechanics analysis  

SciTech Connect (OSTI)

The role of nonlinear rate-dependent effects in the interpretation of crack run-arrest events in ductile materials is being investigated by the Heavy-Section Steel Technology (HSST) program through development and applications of viscoplastic-dynamic finite element analysis techniques. This paper describes a portion of these studies wherein various viscoplastic constitutive models and several proposed nonlinear fracture criteria are being installed in general purpose (ADINA) and special purpose (VISCRK) finite element computer program. The constitutive models implemented in these computer programs include the Bodner-Parton and the Perzyna viscoplastic formulations; the proposed fracture criteria include three parameters that are based on energy principles. The predictive capabilities of the nonlinear techniques are evaluated through applications to a series of HSST wide-plate crack-arrest tests. To assess the impact of including viscoplastic effects in the computational models, values of fracture parameters calculated in elastodynamic and viscoplastic-dynamic analyses are compared for a large wide-plate test. Finally, plans are reviewed for additional computational and experimental studies to assess the utility of viscoplastic analysis techniques in constructing a dynamic inelastic fracture mechanics model for ductile steels. 34 refs., 14 figs.

Bass, B.R.; Pugh, C.E.; Kenney-Walker, J.; Dexter, R.J.; O'Donoghue, P. E.; Schwartz, C. W.

1988-01-01T23:59:59.000Z

83

POWER GRID DYNAMICS: ENHANCING POWER SYSTEM OPERATION THROUGH PRONY ANALYSIS  

SciTech Connect (OSTI)

Prony Analysis is a technique used to decompose a signal into a series consisting of weighted complex exponentials and promises to be an effi cient way of recognizing sensitive lines during faults in power systems such as the U.S. Power grid. Positive Sequence Load Flow (PSLF) was used to simulate the performance of a simple two-area-four-generator system and the reaction of the system during a line fault. The Dynamic System Identifi cation (DSI) Toolbox was used to perform Prony analysis and use modal information to identify key transmission lines for power fl ow adjustment to improve system damping. The success of the application of Prony analysis methods to the data obtained from PSLF is reported, and the key transmission line for adjustment is identifi ed. Future work will focus on larger systems and improving the current algorithms to deal with networks such as large portions of the Western Electricity Coordinating Council (WECC) power grid.

Ray, C.; Huang, Z.

2007-01-01T23:59:59.000Z

84

Dynamic proteome analysis of Cyanothece sp. ATCC 51142 under constant light  

SciTech Connect (OSTI)

Understanding the dynamic nature of protein abundances provides insights into protein turnover not readily apparent from conventional, static mass spectrometry measurements. This level of data is particularly informative when surveying protein abundances in biological systems subjected to large perturbations or alterations in environment such as cyanobacteria. Our current analysis expands upon conventional proteomic approaches in cyanobacteria by measuring dynamic changes of the proteome using a 13C15N-L-leucine metabolic labeling in Cyanothece ATCC51142. Metabolically labeled Cyanothece ATCC51142 cells grown under nitrogen sufficient conditions in continuous light were monitored longitudinally for isotope incorporation over a 48 h period, revealing 422 proteins with dynamic changes in abundances. In particular, proteins involved in carbon fixation, pentose phosphate pathway, cellular protection, redox regulation, protein folding, assembly and degradation showed higher levels of isotope incorporation suggesting that these biochemical pathways are important for growth under non-diazotrophic conditions. Calculation of relative isotope abundances (RIA) values allowed to measure actual active protein synthesis over time for different biochemical pathways under non-diazotrophic conditions. Overall results demonstrated the utility of 'non-steady state' pulsed metabolic labeling for systems-wide dynamic quantification of the proteome in Cyanothece ATCC51142 that can also be applied to other cyanobacteria.

Aryal, Uma K.; Stockel, Jana; Welsh, Eric A.; Gritsenko, Marina A.; Nicora, Carrie D.; Koppenaal, David W.; Smith, Richard D.; Pakrasi, Himadri B.; Jacobs, Jon M.

2012-02-03T23:59:59.000Z

85

A Comparative Assessment of Malware Classification using Binary Texture Analysis and Dynamic Analysis  

E-Print Network [OSTI]

.ucsb.edu Vinod Yegneswaran SRI International Menlo Park, USA vinod@csl.sri.com Phillip Porras SRI International features. Further, feature extraction requires a time investment per binary that does not scale well and efficient complement to dynamic analysis. Categories and Subject Descriptors D.4.6 [Security and Protection

California at Santa Barbara, University of

86

Matrix analysis applied to the equivalent circuits of ?, †, and o-components of three-phase systems  

E-Print Network [OSTI]

LIBRARY i Ii R COLLEGE OF IEXAO MATlUX ANALYSIS APPLIED TO THE EQUIVALENT CIRCUITS OF , P, AND 0 COMPONENTS OF THREE-PHASE SYSTEMS A Theeie MARSHALL CHUAN YUNG KUO b ~ Submitted to the Graduate School of the Agricnltaral and Mechaaical... College of Tenas ln partial fnlfillment of the reqniremente for the degree of MASTER OF SCIENCE May 1958 Ms(or Sub)ect: Electrical Engineering LIBRARY A 4 M COLLEGE OF TEXAS MATRIX ANALYSIS APPLIED TO THE EQUIVALENT CIRCUITS OF g, p, AND 0...

Kuo, Marshall Chuan Yung

1958-01-01T23:59:59.000Z

87

Towards a Simplified Dynamic Wake Model using POD Analysis  

E-Print Network [OSTI]

We apply the proper orthogonal decomposition (POD) to large eddy simulation data of a wind turbine wake in a turbulent atmospheric boundary layer. The turbine is modeled as an actuator disk. Our analyis mainly focuses on the question whether POD could be a useful tool to develop a simplified dynamic wake model. The extracted POD modes are used to obtain approximate descriptions of the velocity field. To assess the quality of these POD reconstructions, we define simple measures which are believed to be relevant for a sequential turbine in the wake such as the energy flux through a disk in the wake. It is shown that only a few modes are necessary to capture basic dynamical aspects of these measures even though only a small part of the turbulent kinetic energy is restored. Furthermore, we show that the importance of the individual modes depends on the measure chosen. Therefore, the optimal choice of modes for a possible model could in principle depend on the application of interest. We additionally present a pos...

Bastine, David; Wächter, Matthias; Peinke, Joachim

2014-01-01T23:59:59.000Z

88

E-Print Network 3.0 - analysis methods applied Sample Search...  

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

Summary: Methods in Applied Sciences and Engineering (ECCOMAS 2008) June 30 -July 5, 2008 Venice, Italy Manifold... -mail: marino.arroyo@upc.edu Key Words: meshfree methods,...

89

E-Print Network 3.0 - analysis method applied Sample Search Results  

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

Summary: Methods in Applied Sciences and Engineering (ECCOMAS 2008) June 30 -July 5, 2008 Venice, Italy Manifold... -mail: marino.arroyo@upc.edu Key Words: meshfree methods,...

90

The development of an approximate dynamic analysis of insulating glass units  

E-Print Network [OSTI]

their dynamic response. The formulation of this approximate dynamic analysis of IG units is achieved by modeling the unit with two equivalent single degree of freedom systems consisting of equivalent masses, equivalent structural stiffnesses, equivalent forces...

Sequeira, Miguel Angel

1995-01-01T23:59:59.000Z

91

E-Print Network 3.0 - applying geostatistical analysis Sample...  

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

Geostatistical Analyst Summary: Welcome to ArcGIS Geostatistical Analyst 1 Exploratory spatial data analysis 2 Semivariogram modeling 3... of geostatistical analysis 49...

92

The Analysis of McMonigal,Lewis and O'Byrne applied to the Natario Warp Drive Spacetime  

E-Print Network [OSTI]

The Analysis of McMonigal,Lewis and O'Byrne applied to the Natario Warp Drive Spacetime Fernando Loup Residencia de Estudantes Universitas Lisboa Portugal June 26, 2012 Abstract Warp Drives Relativity. There are at the present moment two known solutions: The Alcubierre warp drive discovered in 1994

Paris-Sud XI, Université de

93

The analysis of Lobo and Visser applied to both Natario and Casimir warp drives. Physical reactions of gravitational repulsive behavior  

E-Print Network [OSTI]

The analysis of Lobo and Visser applied to both Natario and Casimir warp drives. Physical reactions of General Relativity. There are at the present moment two known solutions: The Alcubierre warp drive discovered in 1994 and the Natario warp drive discovered in 2001. The major drawback concerning warp drives

Boyer, Edmond

94

Applied Dynamic Analysis of the Global Economy (ADAGE) Model | Open Energy  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address: 160 East 300AlgoilEnergy Information the Army Permit: EngineeringInformation

95

Dynamic analysis of policy drivers for bioenergy commodity markets  

SciTech Connect (OSTI)

Biomass is increasingly being considered as a feedstock to provide a clean and renewable source of energy in the form of both liquid fuels and electric power. In the United States, the biofuels and biopower industries are regulated by different policies and have different drivers which impact the maximum price the industries are willing to pay for biomass. This article describes a dynamic computer simulation model that analyzes future behavior of bioenergy feedstock markets given policy and technical options. The model simulates the long-term dynamics of these markets by treating advanced biomass feedstocks as a commodity and projecting the total demand of each industry as well as the market price over time. The model is used for an analysis of the United States bioenergy feedstock market that projects supply, demand, and market price given three independent buyers: domestic biopower, domestic biofuels, and foreign exports. With base-case assumptions, the biofuels industry is able to dominate the market and meet the federal Renewable Fuel Standard (RFS) targets for advanced biofuels. Further analyses suggest that United States bioenergy studies should include estimates of export demand in their projections, and that GHG-limiting policy would partially shield both industries from exporter dominance.

Robert F. Jeffers; Jacob J. Jacobson; Erin M. Searcy

2001-01-01T23:59:59.000Z

96

Analysis and synthesis of attractive quantum Markovian dynamics  

E-Print Network [OSTI]

We propose a general framework for investigating a large class of stabilization problems in Markovian quantum systems. Building on the notions of invariant and attractive quantum subsystem, we characterize attractive subspaces by exploring the structure of the invariant sets for the dynamics. Our general analysis results are exploited to assess the ability of open-loop Hamiltonian and output-feedback control strategies to synthesize Markovian generators which stabilize a target subsystem, subspace, or pure-state. In particular, we provide an algebraic characterization of the manifold of stabilizable pure states in arbitrary finite-dimensional Markovian systems, that leads to a constructive strategy for designing the relevant controllers. Implications for stabilization of entangled pure states are addressed by example.

Francesco Ticozzi; Lorenza Viola

2008-09-03T23:59:59.000Z

97

APPLIED PHYSICS APPLIED PHYSICS  

E-Print Network [OSTI]

MSc APPLIED PHYSICS #12;MSc APPLIED PHYSICS This taught Masters course is based on the strong research in Applied Physics in the University's Department of Physics. The department has an impressive photonics and quantum optics, Physics and the Life Sciences, and solid state physics. The knowledge gained

Mottram, Nigel

98

Dynamics of excitation pulses with attractive interaction: Kinematic analysis and chemical wave experiments  

E-Print Network [OSTI]

Dynamics of excitation pulses with attractive interaction: Kinematic analysis and chemical wave present a theoretical analysis of stacking and destacking wave trains in excitable reaction-diffusion systems with anomalous velocity-wavelength dependence. For linearized dispersion relations, kinematic

Steinbock, Oliver

99

Dynamic Analysis of Hybrid Energy Systems under Flexible Operation and Variable Renewable Generation -- Part I: Dynamic Performance Analysis and Part II: Dynamic Cost  

SciTech Connect (OSTI)

Dynamic analysis of hybrid energy systems (HES) under flexible operation and variable renewable generation is considered in order to better understand various challenges and opportunities associated with the high system variability arising from the integration of renewable energy into the power grid. Unique consequences are addressed by devising advanced HES solutions in which multiple forms of energy commodities, such as electricity and chemical products, may be exchanged. Dynamic models of various unit operations are developed and integrated within two different HES options. One HES option, termed traditional, produces electricity only and consists of a primary heat generator (PHG) (e.g., a small modular reactor), a steam turbine generator, a wind farm, and a battery storage. The other HES option, termed advanced, includes not only the components present in the traditional option but also a chemical plant complex to repurpose excess energy for non-electricity services, such as for the production of chemical goods (e.g., transportation fuel). In either case, a given HES is connected to the power grid at a point of common coupling and requested to deliver a certain electricity generation profile as dictated by a regional power grid operator based on a predicted demand curve. Dynamic analysis of these highly-coupled HES are performed to identify their key dynamical properties and limitations and to prescribe solutions for best managing and mitigating the high variability introduced from incorporating renewable energy into the energy mix. A comparative dynamic cost analysis is also conducted to determine best HES options. The cost function includes a set of metrics for computing fixed costs, such as fixed operations and maintenance (O&M) and overnight capital costs, and also variable operational costs, such as cost of variability, variable O&M cost, and cost of environmental impact, together with revenues. Assuming different options for implementing PHG (e.g., natural gas, coal, nuclear), preliminary results identify the level of renewable penetration at which a given advanced HES option (e.g., a nuclear hybrid) becomes increasingly more economical than a traditional electricity-only generation solution. Conditions are also revealed under which carbon resources may be better utilized as carbon sources for chemical production rather than as combustion material for electricity generation.

Humberto E. Garcia; Amit Mohanty; Wen-Chiao Lin; Robert S. Cherry

2013-04-01T23:59:59.000Z

100

Integrated dynamic landscape analysis and modeling system (IDLAMS) : installation manual.  

SciTech Connect (OSTI)

The Integrated Dynamic Landscape Analysis and Modeling System (IDLAMS) is a prototype, integrated land management technology developed through a joint effort between Argonne National Laboratory (ANL) and the US Army Corps of Engineers Construction Engineering Research Laboratories (USACERL). Dr. Ronald C. Sundell, Ms. Pamela J. Sydelko, and Ms. Kimberly A. Majerus were the principal investigators (PIs) for this project. Dr. Zhian Li was the primary software developer. Dr. Jeffrey M. Keisler, Mr. Christopher M. Klaus, and Mr. Michael C. Vogt developed the decision analysis component of this project. It was developed with funding support from the Strategic Environmental Research and Development Program (SERDP), a land/environmental stewardship research program with participation from the US Department of Defense (DoD), the US Department of Energy (DOE), and the US Environmental Protection Agency (EPA). IDLAMS predicts land conditions (e.g., vegetation, wildlife habitats, and erosion status) by simulating changes in military land ecosystems for given training intensities and land management practices. It can be used by military land managers to help predict the future ecological condition for a given land use based on land management scenarios of various levels of training intensity. It also can be used as a tool to help land managers compare different land management practices and further determine a set of land management activities and prescriptions that best suit the needs of a specific military installation.

Li, Z.; Majerus, K. A.; Sundell, R. C.; Sydelko, P. J.; Vogt, M. C.

1999-02-24T23:59:59.000Z

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


101

Integrated dynamic landscape analysis and modeling system (IDLAMS) : programmer's manual.  

SciTech Connect (OSTI)

The Integrated Dynamic Landscape Analysis and Modeling System (IDLAMS) is a prototype, integrated land management technology developed through a joint effort between Argonne National Laboratory (ANL) and the US Army Corps of Engineers Construction Engineering Research Laboratories (USACERL). Dr. Ronald C. Sundell, Ms. Pamela J. Sydelko, and Ms. Kimberly A. Majerus were the principal investigators (PIs) for this project. Dr. Zhian Li was the primary software developer. Dr. Jeffrey M. Keisler, Mr. Christopher M. Klaus, and Mr. Michael C. Vogt developed the decision analysis component of this project. It was developed with funding support from the Strategic Environmental Research and Development Program (SERDP), a land/environmental stewardship research program with participation from the US Department of Defense (DoD), the US Department of Energy (DOE), and the US Environmental Protection Agency (EPA). IDLAMS predicts land conditions (e.g., vegetation, wildlife habitats, and erosion status) by simulating changes in military land ecosystems for given training intensities and land management practices. It can be used by military land managers to help predict the future ecological condition for a given land use based on land management scenarios of various levels of training intensity. It also can be used as a tool to help land managers compare different land management practices and further determine a set of land management activities and prescriptions that best suit the needs of a specific military installation.

Klaus, C. M.; Li, Z.; Majerus, K. A.; Sundell, R. C.; Sydelko, P. J.; Vogt, M. C.

1999-02-24T23:59:59.000Z

102

E-Print Network 3.0 - applying performance analysis Sample Search...  

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

system to a recorded performance of a trumpet playing... the analysis of recorded acoustic performances in order to study the relationship between scores... of two stages....

103

The Handbook of Applied Bayesian Analysis, Eds: Tony O'Hagan & Mike West, Oxford University Bayesian analysis and decisions in nuclear power plant  

E-Print Network [OSTI]

Bayesian analysis and decisions in nuclear power plant maintenance Elmira Popova, David Morton, Paul Damien are then applied to solving an important problem in a nuclear power plant system at the South Texas Project (STP) Electric Generation Station. STP is one of the newest and largest nuclear power plants in the US

Morton, David

104

Analysis of the influence of tool dynamics in diamond turning  

SciTech Connect (OSTI)

This report describes the progress in defining the role of machine and interface dynamics on the surface finish in diamond turning. It contains a review of literature from conventional and diamond machining processes relating tool dynamics, material interactions and tool wear to surface finish. Data from experimental measurements of tool/work piece interface dynamics are presented as well as machine dynamics for the DTM at the Center.

Fawcett, S.C.; Luttrell, D.E.; Keltie, R.F.

1988-12-01T23:59:59.000Z

105

6.041 / 6.431 Probabilistic Systems Analysis and Applied Probability, Spring 2005  

E-Print Network [OSTI]

This course is offered both to undergraduates (6.041) and graduates (6.431), but the assignments differ. 6.041/6.431 introduces students to the modeling, quantification, and analysis of uncertainty. Topics covered include: ...

Bertsekas, Dimitri

106

Evaluation of the use of engineering judgements applied to analytical human reliablity analysis methods (HRA)  

E-Print Network [OSTI]

Low Dependency MCR Main Control Room viii MFW Main Feed Water MLB Main Line Break MBLOCA Medium Break Loss of Coolant Accident MD Medium Dependency MAAP Modular Accident Analysis Program NPSH Net Positive Suction Head ND...

Kohlhepp, Katherine D.

2006-04-12T23:59:59.000Z

107

Using Dynamic DCF and Real Option Methods for Economic Analysis in NI43-101 Technical Reports  

E-Print Network [OSTI]

Using Dynamic DCF and Real Option Methods for Economic Analysis in NI43-101 Technical Reports or staff. #12;Abstract The introduction of Dynamic Discounted Cash Flow ("Dynamic DCF") and Real Options

108

Modes of asymmetry: the application of harmonic analysis to symmetric quantum dynamics and quantum reference frames  

E-Print Network [OSTI]

Finding the consequences of symmetry for open system quantum dynamics is a problem with broad applications, including describing thermal relaxation, deriving quantum limits on the performance of amplifiers, and exploring quantum metrology in the presence of noise. The symmetry of the dynamics may reflect a symmetry of the fundamental laws of nature, a symmetry of a low-energy effective theory, or it may describe a practical restriction such as the lack of a reference frame. In this paper, we apply some tools of harmonic analysis together with ideas from quantum information theory to this problem. The central idea is to study the decomposition of quantum operations---in particular, states, measurements and channels---into different modes, which we call modes of asymmetry. Under symmetric processing, a given mode of the input is mapped to the corresponding mode of the output, implying that one can only generate a given output if the input contains all of the necessary modes. By defining monotones that quantify the asymmetry in a particular mode, we also derive quantitative constraints on the resources of asymmetry that are required to simulate a given asymmetric operation. We present applications of our results for deriving bounds on the probability of success in nondeterministic state transitions, such as quantum amplification, and a simplified formalism for studying the degradation of quantum reference frames.

Iman Marvian; Robert W. Spekkens

2014-12-05T23:59:59.000Z

109

Comprehensive Mechanisms for Combustion Chemistry: An Experimental and Numerical Study with Emphasis on Applied Sensitivity Analysis  

SciTech Connect (OSTI)

This project was an integrated experimental/numerical effort to study pyrolysis and oxidation reactions and mechanisms for small-molecule hydrocarbon structures under conditions representative of combustion environments. The experimental aspects of the work were conducted in large-diameter flow reactors, at 0.3 to 18 atm pressure, 500 to 1100 K temperature, and 10-2 to 2 seconds reaction time. Experiments were also conducted to determine reference laminar flame speeds using a premixed laminar stagnation flame experiment and particle image velocimetry, as well as pressurized bomb experiments. Flow reactor data for oxidation experiments include: (1)adiabatic/isothermal species time-histories of a reaction under fixed initial pressure, temperature, and composition; to determine the species present after a fixed reaction time, initial pressure; (2)species distributions with varying initial reaction temperature; (3)perturbations of a well-defined reaction systems (e.g. CO/H2/O2 or H2/O2)by the addition of small amounts of an additive species. Radical scavenging techniques are applied to determine unimolecular decomposition rates from pyrolysis experiments. Laminar flame speed measurements are determined as a function of equivalence ratio, dilution, and unburned gas temperature at 1 atm pressure. Hierarchical, comprehensive mechanistic construction methods were applied to develop detailed kinetic mechanisms which describe the measurements and literature kinetic data. Modeling using well-defined and validated mechanisms for the CO/H2/Oxidant systems and perturbations of oxidation experiments by small amounts of additives were also used to derive absolute reaction rates and to investigate the compatibility of published elementary kinetic and thermochemical information. Numerical tools were developed and applied to assess the importance of individual elementary reactions to the predictive performance of the developed mechanisms and to assess the uncertainties in elementary rate constant evaluations.

Dryer, Frederick L.

2009-04-10T23:59:59.000Z

110

Analysis of Petroleum Technology Advances Through Applied Research by Independent Oil Producers  

SciTech Connect (OSTI)

Petroleum Technology Advances Through Applied Research by Independent Oil Producers is a program of the National Oil Research Program, U.S. Department of Energy. Between 1995 and 1998, the program competitively selected and cost-shared twenty-two projects with small producers. The purpose was to involve small independent producers in testing technologies of interest to them that would advance (directly or indirectly) one or more of four national program objectives: (1) Extend the productive life of reservoirs; (2) Increase production and/or reserves; (3) Improve environmental performance; and (4) Broaden the exchange of technology information.

Brashear, Jerry P.; North, Walter B.; Thomas Charles P.; Becker, Alan B.; Faulder, David D.

2000-01-12T23:59:59.000Z

111

An analysis of fluid flow by electrical analogy as applied to air ducts  

E-Print Network [OSTI]

. 0 10. 0 14. 9 9-4 12. 0 VELOCITY FPM 1600 1460 1570 1300 TOTAL PRESSURE DROP IN. WATER 0 04 0. 10 0 02 o o8 o. o8 TABLE 3 21 PART III ALMQJATING CUHREYZ N. . GAME CALCULATOR APPLIED TO THE TOTAL PiiBSURE DROP METHOD GIVEN... resistance for Section B is then read to be 13. 3$ ohms which gives an R oi' 38 ' 2 ohms. From Figure 4 the velocity is found to be 1400 fpm and duct diameter 14. 9 inches. fhe voltage drop for Section D is read to be 10. 0 volts, giving a total head loss...

Howard, Charles Pinto

2012-06-07T23:59:59.000Z

112

Under consideration for publication in Euro. Jnl of Applied Mathematics 1 Dynamic coupling between shallow-water sloshing and  

E-Print Network [OSTI]

on the dynamics and control of liquid transport, e.g. the terrestrial transport of liquids, oil and liquid natural gas in ships, and fuel in aviation and astrodynamics, has motivated a wide range of research for industrial control [10, 11, 12, 24], sloshing in automobile fuel tanks [29], and motion of water waves

Bridges, Tom

113

Coupled thermal analysis applied to the study of the rod ejection accident  

SciTech Connect (OSTI)

An advanced methodology for the assessment of fuel-rod thermal margins under RIA conditions has been developed by AREVA NP SAS. With the emergence of RIA analytical criteria, the study of the Rod Ejection Accident (REA) would normally require the analysis of each fuel rod, slice by slice, over the whole core. Up to now the strategy used to overcome this difficulty has been to perform separate analyses of sampled fuel pins with conservative hypotheses for thermal properties and boundary conditions. In the advanced methodology, the evaluation model for the Rod Ejection Accident (REA) integrates the node average fuel and coolant properties calculation for neutron feedback purpose as well as the peak fuel and coolant time-dependent properties for criteria checking. The calculation grid for peak fuel and coolant properties can be specified from the assembly pitch down to the cell pitch. The comparative analysis of methodologies shows that coupled methodology allows reducing excessive conservatism of the uncoupled approach. (authors)

Gonnet, M. [AREVA NP, TOUR AREVA - 1 Place Jean MILLIER, 92084 Paris La Defense Cedex (France)

2012-07-01T23:59:59.000Z

114

Statistical techniques applied to aerial radiometric surveys (STAARS): principal components analysis user's manual. [NURE program  

SciTech Connect (OSTI)

A Principal Components Analysis (PCA) has been written to aid in the interpretation of multivariate aerial radiometric data collected by the US Department of Energy (DOE) under the National Uranium Resource Evaluation (NURE) program. The variations exhibited by these data have been reduced and classified into a number of linear combinations by using the PCA program. The PCA program then generates histograms and outlier maps of the individual variates. Black and white plots can be made on a Calcomp plotter by the application of follow-up programs. All programs referred to in this guide were written for a DEC-10. From this analysis a geologist may begin to interpret the data structure. Insight into geological processes underlying the data may be obtained.

Koch, C.D.; Pirkle, F.L.; Schmidt, J.S.

1981-01-01T23:59:59.000Z

115

Multi-attribute criteria applied to electric generation energy system analysis LDRD.  

SciTech Connect (OSTI)

This report began with a Laboratory-Directed Research and Development (LDRD) project to improve Sandia National Laboratories multidisciplinary capabilities in energy systems analysis. The aim is to understand how various electricity generating options can best serve needs in the United States. The initial product is documented in a series of white papers that span a broad range of topics, including the successes and failures of past modeling studies, sustainability, oil dependence, energy security, and nuclear power. Summaries of these projects are included here. These projects have provided a background and discussion framework for the Energy Systems Analysis LDRD team to carry out an inter-comparison of many of the commonly available electric power sources in present use, comparisons of those options, and efforts needed to realize progress towards those options. A computer aid has been developed to compare various options based on cost and other attributes such as technological, social, and policy constraints. The Energy Systems Analysis team has developed a multi-criteria framework that will allow comparison of energy options with a set of metrics that can be used across all technologies. This report discusses several evaluation techniques and introduces the set of criteria developed for this LDRD.

Kuswa, Glenn W.; Tsao, Jeffrey Yeenien; Drennen, Thomas E.; Zuffranieri, Jason V.; Paananen, Orman Henrie; Jones, Scott A.; Ortner, Juergen G. (DLR, German Aerospace, Cologne); Brewer, Jeffrey D.; Valdez, Maximo M.

2005-10-01T23:59:59.000Z

116

Electrical signature analysis (ESA) developments at the Oak Ridge Diagnostics Applied Research Center  

SciTech Connect (OSTI)

Since 1985, researchers at the Oak Ridge National Laboratory (ORNL) have developed and patented several novel signal conditioning and signature analysis methods that have exploited the intrinsic abilities of conventional electric motors and generators to act as transducers. By using simple nonintrusive sensors such as clamp-on current and voltage probes, these new diagnostic techniques provide an improved means of detecting small time-dependent load and speed variations generated anywhere within an electromechanical system and converting them into revealing signatures that can be used to detect equipment degradation and incipient failures. These developments have been grouped under the general name of electrical signature analysis (ESA) and together provide a breakthrough in the ability to detect, analyze, and correct unwanted changes in process conditions or the presence of abnormalities in electrical and electromechanical equipment. Typical diagnostic information provided by ESA is comparable to that provided by conventional vibration analysis in that both time waveform and frequency spectrum signatures may be produced. The primary benefit of ESA is that an extensive range of diagnostic information can be obtained from a single transducer that may be installed several hundred feet or more from the monitored device on its electrical lines supplying input power (e.g., to a motor) or carrying output power (e.g., from a generator); thus, ESA is truly remote and nonintrusive.

Haynes, H.D. [Oak Ridge National Lab., TN (United States). Diagnostics Applied Research Center

1995-07-01T23:59:59.000Z

117

Applying geologic sensitivity analysis to environmental risk management: The financial implications  

SciTech Connect (OSTI)

The financial risks associated with environmental contamination can be staggering and are often difficult to identify and accurately assess. Geologic sensitivity analysis is gaining recognition as a significant and useful tool that can empower the user with crucial information concerning environmental risk management and brownfield redevelopment. It is particularly useful when (1) evaluating the potential risks associated with redevelopment of historical industrial facilities (brownfields) and (2) planning for future development, especially in areas of rapid development because the number of potential contaminating sources often increases with an increase in economic development. An examination of the financial implications relating to geologic sensitivity analysis in southeastern Michigan from numerous case studies indicate that the environmental cost of contamination may be 100 to 1,000 times greater at a geologically sensitive location compared to the least sensitive location. Geologic sensitivity analysis has demonstrated that near-surface geology may influence the environmental impact of a contaminated site to a greater extent than the amount and type of industrial development.

Rogers, D.T.

1999-07-01T23:59:59.000Z

118

Simulation and analysis of Magnetically-Applied Pressure-Shear (MAPS) experiments.  

SciTech Connect (OSTI)

A new experimental technique to measure material shear strength at high pressures has been developed for use on magnetohydrodynamic (MHD) drive pulsed power platforms. The technique is referred to as Magnetically-Applied Pressure-Shear (MAPS). By applying an external static magnetic field to the sample region, the MHD drive directly induces a shear stress wave in addition to the usual longitudinal stress wave. Strength is probed by passing this shear wave through a sample material where the transmissible shear stress is limited to the sample strength. The magnitude of the transmitted shear wave is measured via a transverse velocity interferometry system (VISAR) from which the sample strength is determined. The strength of materials is defined as the ability of a material to sustain deviatoric (shear) stresses. Strength is an important aspect of the response of materials subjected to compression to high pressure. Beyond the elastic response, material strength will govern at what pressure and to what extent a material will plastically deform. The MAPS technique cleverly exploits the property that, for a von Mises yield criterion at a given longitudinal stress, the maximum amplitude shear wave that can be transmitted is limited by the strength at that stress level. Successful fielding of MAPS experiments to measure shear stresses relies upon correct numerical simulation of the experiment. Complex wave interactions among forward and reflected longitudinal and shear waves, as well as the advancing magnetic diffusion front of the MHD drive, can make the design of the experiment complicated. Careful consideration must be given to driver, sample, and anvil materials; to the thicknesses of the driver, sample and anvil layers; as well as to the timing of the interacting waves. This paper will present and analyze the 2D MHD simulations used to design the MAPS experiments. The MAPS experiments are modeled using Sandia's ALEGRA-MHD simulation code. ALEGRA-MHD is an operator-split, multi-physics, multi-material, arbitrary lagrangian-eulerian code developed to model magnetic implosion, ceramic fracture, and electromagnetic launch. We will detail the numerical investigations into MHD shear generation, longitudinal and shear stress coupling, timing of wave interactions, and transmission of shear at material interfaces.

Haill, Thomas A.; Alexander, C. Scott; Asay, James Russell

2011-06-01T23:59:59.000Z

119

Energy analysis of facade-integrated photovoltaic systems applied to UAE commercial buildings  

SciTech Connect (OSTI)

Developments in the design and manufacture of photovoltaic cells have recently been a growing concern in the UAE. At present, the embodied energy pay-back time (EPBT) is the criterion used for comparing the viability of such technology against other forms. However, the impact of PV technology on the thermal performance of buildings is not considered at the time of EPBT estimation. If additional energy savings gained over the PV system life are also included, the total EPBT could be shorter. This paper explores the variation of the total energy of building integrated photovoltaic systems (BiPV) as a wall cladding system applied to the UAE commercial sector and shows that the ratio between PV output and saving in energy due to PV panels is within the range of 1:3-1:4. The result indicates that for the southern and western facades in the UAE, the embodied energy pay-back time for photovoltaic system is within the range of 12-13 years. When reductions in operational energy are considered, the pay-back time is reduced to 3.0-3.2 years. This study comes to the conclusion that the reduction in operational energy due to PV panels represents an important factor in the estimation of EPBT. (author)

Radhi, Hassan [Architectural Engineering Department, UAE University, Al-ain (United Arab Emirates)

2010-12-15T23:59:59.000Z

120

Quasi-real-time analysis of dynamic near field scattering data using a graphics processing unit  

E-Print Network [OSTI]

We present an implementation of the analysis of dynamic near field scattering (NFS) data using a graphics processing unit (GPU). We introduce an optimized data management scheme thereby limiting the number of operations required. Overall, we reduce the processing time from hours to minutes, for typical experimental conditions. Previously the limiting step in such experiments, the processing time is now comparable to the data acquisition time. Our approach is applicable to various dynamic NFS methods, including shadowgraph, Schlieren and differential dynamic microscopy.

Giovanni Cerchiari; Fabrizio Croccolo; Frédéric Cardinaux; Frank Scheffold

2012-09-15T23:59:59.000Z

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


121

Nonstandard Analysis Applied to Special and General Relativity - The Theory of Infinitesimal Light-Clocks  

E-Print Network [OSTI]

Nonstandard analysis and electromagnetic propagation properties are used to derive all of the fundamental results for the Special Theory of Relativity. Infinitesimal modeling via infinitesimal light-clocks is used to derive two general line-elements (metrics) without the use of Riemannian geometry. By substituting potential velocities, the Schwarzschild, quasi and modified Schwarzschild, de Sitter, Robertson-Walker and similar line-elements are derived. New black hole and quasi-white hole investigations are presented. A new fixed method using separating operators is used to obtain the major predictions for the relativistic alterations in natural-system behavior. The major conclusion is that all such changes are related to electromagnetic properties and that Riemannian geometry is but an analogue model for natural-system behavior.

Robert A. Herrmann

2014-02-14T23:59:59.000Z

122

Dynamic evidential networks in system reliability analysis: A Dempster Shafer Approach  

E-Print Network [OSTI]

Dynamic evidential networks in system reliability analysis: A Dempster Shafer Approach Philippe for modeling and analyzing the system reliability based on Dynamic Evidential Networks (DEN). This method. The current system state determine the probability distribution over the next states. In the work reported

Paris-Sud XI, Université de

123

Understanding Sectoral Labor Market Dynamics: An Equilibrium Analysis of the Oil and Gas Field Services  

E-Print Network [OSTI]

Understanding Sectoral Labor Market Dynamics: An Equilibrium Analysis of the Oil and Gas Field examines the response of employment and wages in the US oil and gas ...eld services industry to changes the dynamic response of wages and employment in the U.S. Oil and Gas Field Services (OGFS) industry to changes

Sadoulet, Elisabeth

124

Analysis of Power System Dynamics Subject to Stochastic Power Injections  

E-Print Network [OSTI]

to the computation of long-term power system state statistics; and to short-term probabilistic dynamic performance/reliability of renewable re- sources such as wind energy conversion systems (WECS) and photovoltaic energy conversion

DeVille, Lee

125

Performance analysis of synchronous machines under dynamic eccentricity  

E-Print Network [OSTI]

The performance of salient pole synchronous machines under eccentric rotors is studied. Relationships between stator and rotor current induced harmonics and dynamic eccentricity are investigated. The winding function theory has been modified...

Al-Nuaim, Nabil Abdulaziz

1996-01-01T23:59:59.000Z

126

Decision Analysis Science Modeling for Application and Fielding Selection Applied to Metal Decontamination Technologies  

SciTech Connect (OSTI)

During the decontamination and decommissioning (D and D) activities being conducted by the U.S. Department of Energy (DOE), approximately 550,000 metric tons of contaminated metal will be generated by the disposition of contaminated buildings. The majority of the structural steel is considered to be radiologically contaminated. The D and D activities require the treatment of the structural steel to reduce occupational and environmental radiological exposures during dismantlement. Treatment technologies may also be required for possible recycling. Many proven commercial treatment technologies are available. These treatment processes vary in aggressiveness, safety requirements, secondary waste generation, necessary capital, and operation and maintenance costs. Choosing the appropriate technology to meet the decontamination objectives for structural steel is a difficult process. A single information source comparing innovative and nuclear and non-nuclear technologies in the areas of safety, cost and effectiveness is not currently commercially available to perform a detailed analysis. This study presents comparable data related to operation and maintenance, cost, and health and safely aspects of three readily available technologies and one innovative technology for nuclear decontamination. The technologies include Advance Recyclable Media System (ARMS{trademark}), NELCO Porta Shot Blast{trademark} (JHJ-2000), Pegasus Coating Removal System 7 (PCRS-7) and the innovative laser ablation technology called the Yag Eraser{trademark}.

Lagos, L.E.; Ebadian, M.A.

1998-01-01T23:59:59.000Z

127

Dynamics of the UK Natural Gas Industry: System Dynamics Modelling and Long-Term Energy Policy Analysis  

E-Print Network [OSTI]

www.eprg.group.cam.ac.uk E P R G W O R K IN G P A P E R N O N -T E C H N IC A L S U M M A R Y DYNAMICS OF THE UK NATURAL GAS INDUSTRY: SYSTEM DYNAMICS MODELLING AND LONG-TERM ENERGY POLICY ANALYSIS EPRG Working Paper 0913... Cambridge Working Paper in Economics 0922 Kong Chyong Chi , David M. Reiner and William J. Nuttall The UK offshore natural gas and oil industry has a long and successful history and has been said to represent the pride of UK...

Chi, K C; Reiner, David; Nuttall, William J

128

Descriptor-Based Analysis Applied to HCN Synthesis from NH3 and CH4  

SciTech Connect (OSTI)

The design of solid metal catalysts using theoretical methods has been a long-standing goal in heterogeneous catalysis. Recent developments in methodology and computer technology as well as the establishment of a descriptor-based approach for the analysis of reaction mechanisms and trends across the periodic table allow for the fast screening for new catalytic materials and have lead to first examples of computational discoveries of new materials. The underlying principles of the descriptor-based approach are the existence of relations between the surface electronic structure, adsorption energies and activation barriers that result in volcano-shaped activity plots as function of simple descriptors, such as atomic binding energies or the d-band center. Linear scaling relations have been established between the adsorption energies of hydrogen-containing molecules such as CH{sub x}, NH{sub x}, OH{sub x} and SH{sub x} and the C, N O and S adsorption energies on transition-metal surfaces. Transition-state energies have also been shown to scale linearly with adsorption energies in a similar fashion. Recently, a single transition state scaling relation has been identified for a large number of C-C, C-O, C-N, N-O, N-N, and O-O coupling reactions. The scaling relations provide a powerful tool for the investigation of reaction mechanisms and the prediction of potential energy surfaces. They limit the number of independent variables to a few, typically adsorption energies of key atoms. Using this information as input to a microkinetic model provides an understanding of trends in catalytic activity across the transition metals. In most cases a volcano-shaped relation between activity and the key variables, the descriptors, is observed. In the present paper we will provide an example of the approach outlined above and show how one can obtain an understanding of activity/selectivity trends of a reaction with just a few new calculations.

Grabow, L

2011-08-18T23:59:59.000Z

129

Hull/mooring/riser coupled dynamic analysis of a floating platform in time domain  

E-Print Network [OSTI]

this program is about ten times faster than its sibling based on the same FEM theory given by D. L. Garrett in 19g2. The Present Case Study In order to examine the benefits of non-linear coupled dynamic analysis of floating offshore structures with flexible... dynamic analysis, a finite-element-method (FEM) program WINPOST was used (e. g. Kim, 1997; Ran and Kim, 1997). The mooring dynamics program was based on a global-coordinate- based FEM (Garrett, 1982), which is expected to be more efficient than...

Zheng, Weizhong

2000-01-01T23:59:59.000Z

130

Review of Methods of Power-Spectrum Analysis as Applied to Super-Kamiokande Solar Neutrino Data  

E-Print Network [OSTI]

To help understand why different published analyses of the Super-Kamiokande solar neutrino data arrive at different conclusions, we have applied six different methods to a standardized problem. The key difference between the various methods rests in the amount of information that each processes. A Lomb-Scargle analysis that uses the mid times of the time bins and ignores experimental error estimates uses the least information. A likelihood analysis that uses the start times, end times, and mean live times, and takes account of the experimental error estimates, makes the greatest use of the available information. We carry out power-spectrum analyses of the Super-Kamiokande 5-day solar neutrino data, using each method in turn, for a standard search band (0 to 50 yr-1). For each method, we also carry out a fixed number (10,000) of Monte-Carlo simulations for the purpose of estimating the significance of the leading peak in each power spectrum. We find that, with one exception, the results of these calculations are compatible with those of previously published analyses. (We are unable to replicate Koshio's recent results.) We find that the significance of the peaks at 9.43 yr-1 and at 43.72 yr-1 increases progressively as one incorporates more information into the analysis procedure.

P. A. Sturrock

2004-08-02T23:59:59.000Z

131

The dynamics of a seismic wave field: Animation and analysis of kinematic GPS data recorded during the 2011  

E-Print Network [OSTI]

The dynamics of a seismic wave field: Animation and analysis of kinematic GPS data recorded during. Freymueller (2011), The dynamics of a seismic wave field: Animation and analysis of kinematic GPS data identify dynamic ground motion due to Swaves (body waves), Love waves and Rayleigh waves (surface waves

Grapenthin, Ronni

132

Symbolic Dynamic Analysis of Transient Time Series for Fault  

E-Print Network [OSTI]

. A recently developed data-driven technique, called the symbolic dynamic filtering (SDF) [8], has been shown), and Bayesian techniques [9]. Recently, in a two-part paper [10,11], an SDF-based algorithm for detection- stationarity made in SDF. Due to this assumption, SDF may not be able to adequately handle transient data

Ray, Asok

133

ORIGINAL PAPER Analysis and management of stand dynamics of Vietnamese  

E-Print Network [OSTI]

. In addition, wildfires frequently affect their dynamics. Sustainable man- agement of this unique forest type on maximum sustainable yield, (b) explore transformation times from a given to a desired forest state, and (c-timber products to local people and the country (Con 1991; Dong 2002). The dipterocarp forests in Vietnam are dry

Paris-Sud XI, Université de

134

The method of general dimensional analysis applied to the determination of the parameters of the process of nitriding  

SciTech Connect (OSTI)

In the field of process characteristics for thermochemical treatments there is a contradiction between the great number of the parameters, that the experiment pointed out as determinants of the acquired results, and the small number of such kind of parameters that the Fick`s analytical laws can correlate. It can be ascertained that, a great deal of the complexity of diffusion processes is focused on the diffusion constant, as in the case of convection, where the coefficient of convection reflects the complexity of the process. The general dimensional analysis, created by the Romanian School of Experimental Physics as a development on a superior level of Rayleigh and Buckingham`s methods, can gather without exception, in analytical relations, all the parameters of the process of diffusion. The authors apply the method in the case of nitriding in nitrogen atmosphere with addition of ammonia.

Samoila, C.; Bot, D. [Transilvania-Univ. of Brasov (Romania)

1995-12-31T23:59:59.000Z

135

A linear dynamic analysis of stiffened shells of revolution by the matrix displacement method  

E-Print Network [OSTI]

displacement approach and Houbolt's numerical method of integration. The stiffened shell structure considered here is a combination of shell structure with either meridional or circumferential stiff- eners or both. The structure is idealized... Survey Shell Structures. Stiffened Shell Structures. Objective Scope of Investigation. 1 4 4 8 13 15 II GENERAL DESCRIPTION OF THE MATRIX DISPLACEMENT METHOD. . . . . . . . . . . . . . . . . . . . . 17 Static Analysis Dynamic Analysis. 17...

Hoover, Charlie Doll

2012-06-07T23:59:59.000Z

136

Analysis of Cardio-respiratory Dynamics during Mental Stress using (Partial) Time-Frequency Spectra  

E-Print Network [OSTI]

important to determine the mechanisms un- derlying stress. In this paper, we aim at studying the cardio-respiratory to conduct a combined analysis of the cardio-respiratory system. In this study, we will perform cross timeAnalysis of Cardio-respiratory Dynamics during Mental Stress using (Partial) Time-Frequency Spectra

137

Risk Dynamics?An Analysis for the Risk of Change  

E-Print Network [OSTI]

Bookstaber, R. (1999). "Risk Management in ComplexG. E. (2004). "How Useful Is Quantitative Risk Assessment?"Risk Analysis, Aubrey, A. (2010). "Preventing Diabetes:

Huang, Tailin

2010-01-01T23:59:59.000Z

138

Dynamic Human Reliability Analysis: Benefits and Challenges of Simulating Human Performance  

SciTech Connect (OSTI)

To date, there has been considerable work on dynamic event trees and other areas related to dynamic probabilistic safety assessment (PSA). The counterpart to these efforts in human reliability analysis (HRA) has centered on the development of specific methods to account for the dynamic nature of human performance. In this paper, the author posits that the key to dynamic HRA is not in the development of specific methods but in the utilization of cognitive modeling and simulation to produce a framework of data that may be used in quantifying the likelihood of human error. This paper provides an overview of simulation approaches to HRA; reviews differences between first, second, and dynamic generation HRA; and outlines potential benefits and challenges of this approach.

R. L. Boring

2007-06-01T23:59:59.000Z

139

Data analysis method for wind turbine dynamic response testing  

SciTech Connect (OSTI)

The Wind Research Branch at the Solar Energy Research Institute (SERI) has developed an efficient data analysis package for personal computer use in response to growing needs of the wind turbine industry and SERI's Cooperative Field Test Program. This new software is used by field test engineers to examine wind turbine performance and loads during testing, as well as by data analysts for detailed post-processing. The Wind Data Analysis Tool Set, WINDATS, has been written as a collection of tools that fall into two general groups. First, the preparatory tools perform subsection, filtering, decimation, preaveraging, scaling, and derivation of new channels. Second, analysis tools are used for mean removal, linear detrending, azimuth averaging and removal, per-rev averaging, binning, and spectral analysis. The input data file can be a standard ASCII file as is generated by most data acquisition software. 9 refs., 10 figs.

Olsen, T.L.; Hock, S.M.

1989-06-01T23:59:59.000Z

140

An Analysis Tool for Flight Dynamics Monte Carlo Simulations  

E-Print Network [OSTI]

and analysis work to understand vehicle operating limits and identify circumstances that lead to mission failure. A Monte Carlo simulation approach that varies a wide range of physical parameters is typically used to generate thousands of test cases...

Restrepo, Carolina 1982-

2011-05-20T23:59:59.000Z

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


141

Dynamic Systems Analysis Report for Nuclear Fuel Recycle  

SciTech Connect (OSTI)

This report examines the time-dependent dynamics of transitioning from the current United States (U.S.) nuclear fuel cycle where used nuclear fuel is disposed in a repository to a closed fuel cycle where the used fuel is recycled and only fission products and waste are disposed. The report is intended to help inform policy developers, decision makers, and program managers of system-level options and constraints as they guide the formulation and implementation of advanced fuel cycle development and demonstration efforts and move toward deployment of nuclear fuel recycling infrastructure.

Brent Dixon; Sonny Kim; David Shropshire; Steven Piet; Gretchen Matthern; Bill Halsey

2008-12-01T23:59:59.000Z

142

Characteristics of identifying linear dynamic models from impulse response data using Prony analysis  

SciTech Connect (OSTI)

The purpose of the study was to investigate the characteristics of fitting linear dynamic models to the impulse response of oscillatory dynamic systems using Prony analysis. Many dynamic systems exhibit oscillatory responses with multiple modes of oscillations. Although the underlying dynamics of such systems are often nonlinear, it is frequently possible and very useful to represent the system operating about some set point with a linear model. Derivation of such linear models can be done using two basic approaches: model the system using theoretical derivations and some linearization method such as a Taylor series expansion; or use a curve-fitting technique to optimally fit a linear model to specified system response data. Prony analysis belongs to the second class of system modeling because it is a method of fitting a linear model to the impulse response of a dynamic system. Its parallel formulation inherently makes it well suited for fitting models to oscillatory system data. Such oscillatory dynamic effects occur in large synchronous-generator-based power systems in the form of electromechanical oscillations. To study and characterize these oscillatory dynamics, BPA has developed computer codes to analyze system data using Prony analysis. The objective of this study was to develop a highly detailed understanding of the properties of using Prony analysis to fit models to systems with characteristics often encountered in power systems. This understanding was then extended to develop general rules-of-thumb'' for using Prony analysis. The general characteristics were investigated by performing fits to data from known linear models under controlled conditions. The conditions studied include various mathematical solution techniques; different parent system configurations; and a large variety of underlying noise characteristics.

Trudnowski, D.J.

1992-12-01T23:59:59.000Z

143

Characteristics of identifying linear dynamic models from impulse response data using Prony analysis  

SciTech Connect (OSTI)

The purpose of the study was to investigate the characteristics of fitting linear dynamic models to the impulse response of oscillatory dynamic systems using Prony analysis. Many dynamic systems exhibit oscillatory responses with multiple modes of oscillations. Although the underlying dynamics of such systems are often nonlinear, it is frequently possible and very useful to represent the system operating about some set point with a linear model. Derivation of such linear models can be done using two basic approaches: model the system using theoretical derivations and some linearization method such as a Taylor series expansion; or use a curve-fitting technique to optimally fit a linear model to specified system response data. Prony analysis belongs to the second class of system modeling because it is a method of fitting a linear model to the impulse response of a dynamic system. Its parallel formulation inherently makes it well suited for fitting models to oscillatory system data. Such oscillatory dynamic effects occur in large synchronous-generator-based power systems in the form of electromechanical oscillations. To study and characterize these oscillatory dynamics, BPA has developed computer codes to analyze system data using Prony analysis. The objective of this study was to develop a highly detailed understanding of the properties of using Prony analysis to fit models to systems with characteristics often encountered in power systems. This understanding was then extended to develop general ``rules-of-thumb`` for using Prony analysis. The general characteristics were investigated by performing fits to data from known linear models under controlled conditions. The conditions studied include various mathematical solution techniques; different parent system configurations; and a large variety of underlying noise characteristics.

Trudnowski, D.J.

1992-12-01T23:59:59.000Z

144

Analysis of forward and inverse problems in chemical dynamics and spectroscopy  

SciTech Connect (OSTI)

The overall scope of this research concerns the development and application of forward and inverse analysis tools for problems in chemical dynamics and chemical kinetics. The chemical dynamics work is specifically associated with relating features in potential surfaces and resultant dynamical behavior. The analogous inverse research aims to provide stable algorithms for extracting potential surfaces from laboratory data. In the case of chemical kinetics, the focus is on the development of systematic means to reduce the complexity of chemical kinetic models. Recent progress in these directions is summarized below.

Rabitz, H. [Princeton Univ., NJ (United States)

1993-12-01T23:59:59.000Z

145

Response margins of the dynamic analysis of piping systems  

SciTech Connect (OSTI)

This report is organized as follows: Section 2 describes the three piping systems of the Zion nuclear power plant which formed the basis of the present study. The auxiliary feedwater (AFW) piping from steam generator to containment, the residual heat removal (RHR) and safety injection piping in the auxiliary building, and the reactor coolant loops (RCL) including a portion of the branch lines were analyzed. Section 3 describes the analysis methods and the analyses performed. Section 4 presents the numerical results; the principal results presented as comparisons of response calculated by best estimate time history analysis methods vs. the SRP response spectrum technique. Section 5 draws conclusions from the results. Appendix A contains a brief description of the mathematical models that defined the structures containing the three piping systems. Response from these models provided input to the piping models. Appendix B provides a detailed derivation of the pseudostatic mode approach to the multisupport time history analysis method used in this study.

Johnson, J.J.; Benda, B.J.; Chuang, T.Y.; Smith, P.D.

1984-04-01T23:59:59.000Z

146

Hanbury-Brown-Twiss analysis and dynamical correlations  

SciTech Connect (OSTI)

We test the applicability of the Hanbury-Brown-Twiss theory of bosonic enhancement for the analysis of heavy ion reactions. The correlation function is calculated in a solvable model. We find that the analysis in terms of the ratio of like-sign to unlike-sign pairs is more reliable and more stable than in terms of the ratio of pairs to single mesons. We also compare our exact results with the predictions obtained in a classical treatment of the source function, like the one that is used to extract correlation functions from cascade type simulations. In spite of agreement for extreme choices of the parameters of our model, the results of the approximation deviate strongly from the exact correlation function for Physical Noticed choices. We thus call into question the use of classical approximations for the analysis of reactions in which the final state is produced by a cascade of resonance decays.

Herrmann, M.; Bertsch, G.F.; Danielewicz, P.

1993-10-01T23:59:59.000Z

147

Simulating Nationwide Pandemics: Applying the Multi-scale Epidemiologic Simulation and Analysis System to Human Infectious Diseases  

SciTech Connect (OSTI)

This study uses the Multi-scale Epidemiologic Simulation and Analysis (MESA) system developed for foreign animal diseases to assess consequences of nationwide human infectious disease outbreaks. A literature review identified the state of the art in both small-scale regional models and large-scale nationwide models and characterized key aspects of a nationwide epidemiological model. The MESA system offers computational advantages over existing epidemiological models and enables a broader array of stochastic analyses of model runs to be conducted because of those computational advantages. However, it has only been demonstrated on foreign animal diseases. This paper applied the MESA modeling methodology to human epidemiology. The methodology divided 2000 US Census data at the census tract level into school-bound children, work-bound workers, elderly, and stay at home individuals. The model simulated mixing among these groups by incorporating schools, workplaces, households, and long-distance travel via airports. A baseline scenario with fixed input parameters was run for a nationwide influenza outbreak using relatively simple social distancing countermeasures. Analysis from the baseline scenario showed one of three possible results: (1) the outbreak burned itself out before it had a chance to spread regionally, (2) the outbreak spread regionally and lasted a relatively long time, although constrained geography enabled it to eventually be contained without affecting a disproportionately large number of people, or (3) the outbreak spread through air travel and lasted a long time with unconstrained geography, becoming a nationwide pandemic. These results are consistent with empirical influenza outbreak data. The results showed that simply scaling up a regional small-scale model is unlikely to account for all the complex variables and their interactions involved in a nationwide outbreak. There are several limitations of the methodology that should be explored in future work including validating the model against reliable historical disease data, improving contact rates, spread methods, and disease parameters through discussions with epidemiological experts, and incorporating realistic behavioral assumptions.

Dombroski, M; Melius, C; Edmunds, T; Banks, L E; Bates, T; Wheeler, R

2008-09-24T23:59:59.000Z

148

Dynamic Analysis of Wind Turbine Planetary Gears Using an Extended Harmonic Balance Approach: Preprint  

SciTech Connect (OSTI)

The dynamics of wind turbine planetary gears with gravity effects are investigated using an extended harmonic balance method that extends established harmonic balance formulations to include simultaneous internal and external excitations. The extended harmonic balance method with arc-length continuation and Floquet theory is applied to a lumped-parameter planetary gear model including gravity, fluctuating mesh stiffness, bearing clearance, and nonlinear tooth contact to obtain the planetary gear dynamic response. The calculated responses compare well with time domain integrated mathematical models and experimental results. Gravity is a fundamental vibration source in wind turbine planetary gears and plays an important role in system dynamics, causing hardening effects induced by tooth wedging and bearing-raceway contacts. Bearing clearance significantly reduces the lowest resonant frequencies of translational modes. Gravity and bearing clearance together lowers the speed at which tooth wedging occurs lower than the resonant frequency.

Guo, Y.; Keller, J.; Parker, R. G.

2012-06-01T23:59:59.000Z

149

Electrical Power Grid Delivery Dynamic Analysis: Using Prime Mover Engines to Balance Dynamic Wind Turbine Output  

SciTech Connect (OSTI)

This paper presents an investigation into integrated wind + combustion engine high penetration electrical generation systems. Renewable generation systems are now a reality of electrical transmission. Unfortunately, many of these renewable energy supplies are stochastic and highly dynamic. Conversely, the existing national grid has been designed for steady state operation. The research team has developed an algorithm to investigate the feasibility and relative capability of a reciprocating internal combustion engine to directly integrate with wind generation in a tightly coupled Hybrid Energy System. Utilizing the Idaho National Laboratory developed Phoenix Model Integration Platform, the research team has coupled demand data with wind turbine generation data and the Aspen Custom Modeler reciprocating engine electrical generator model to investigate the capability of reciprocating engine electrical generation to balance stochastic renewable energy.

Diana K. Grauer; Michael E. Reed

2011-11-01T23:59:59.000Z

150

Rotor dynamic analysis of multi-line systems using the polynomial transfer matrix method  

E-Print Network [OSTI]

forces generated by the working fluid of the machine; squeeze film, elastomeric or active feedback dampers; or machine mounting and attachment flexibility. Of course the results of the analysis are only good if the linearization is a valid approximation...ROTOR DYNAMIC ANALYSIS OF MULTI-LINE SYSTEMS USING THE POLYNOMIAL TRANSFER MATRIX METHOD A Thesis by PAUL JOSEPH TROXLER Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirement...

Troxler, Paul Joseph

1990-01-01T23:59:59.000Z

151

Photoionization analysis of chemo-dynamical dwarf galaxies simulations  

E-Print Network [OSTI]

Photoionization modelling allows to follow the transport, the emergence, and the absorption of photons taking into account all important processes in nebular plasmas. Such modelling needs the spatial distribution of density, chemical abundances and temperature, that can be provided by chemo-dynamical simulations (ChDS) of dwarf galaxies. We perform multicomponent photoionization modelling (MPhM) of the ionized gas using 2-D ChDSs of dwarf galaxies. We calculate emissivity maps for important nebular emission lines. Their intensities are used to derive the chemical abundance of oxygen by the so-called Te- and R23-methods. Some disagreements are found between oxygen abundances calculated with these methods and the ones coming from the ChDSs. We investigate the fraction of ionizing radiation emitted in the star-forming region which is able to leak out the galaxy. The time- and direction-averaged escape fraction in our simulation is 0.35-0.4. Finally, we have calculated the total Halpha lumi- nosity of our model g...

Melekh, B; Hensler, G; Buhajenko, O

2015-01-01T23:59:59.000Z

152

Computational Fluid Dynamics Analysis of Flexible Duct Junction Box Design  

SciTech Connect (OSTI)

IBACOS explored the relationships between pressure and physical configurations of flexible duct junction boxes by using computational fluid dynamics (CFD) simulations to predict individual box parameters and total system pressure, thereby ensuring improved HVAC performance. Current Air Conditioning Contractors of America (ACCA) guidance (Group 11, Appendix 3, ACCA Manual D, Rutkowski 2009) allows for unconstrained variation in the number of takeoffs, box sizes, and takeoff locations. The only variables currently used in selecting an equivalent length (EL) are velocity of air in the duct and friction rate, given the first takeoff is located at least twice its diameter away from the inlet. This condition does not account for other factors impacting pressure loss across these types of fittings. For each simulation, the IBACOS team converted pressure loss within a box to an EL to compare variation in ACCA Manual D guidance to the simulated variation. IBACOS chose cases to represent flows reasonably correlating to flows typically encountered in the field and analyzed differences in total pressure due to increases in number and location of takeoffs, box dimensions, and velocity of air, and whether an entrance fitting is included. The team also calculated additional balancing losses for all cases due to discrepancies between intended outlet flows and natural flow splits created by the fitting. In certain asymmetrical cases, the balancing losses were significantly higher than symmetrical cases where the natural splits were close to the targets. Thus, IBACOS has shown additional design constraints that can ensure better system performance.

Beach, R.; Prahl, D.; Lange, R.

2013-12-01T23:59:59.000Z

153

A Detailed Analysis of the Nonlinear Dynamics of the Electric Step Motor J. Reiss, F. Alin*  

E-Print Network [OSTI]

A Detailed Analysis of the Nonlinear Dynamics of the Electric Step Motor J. Reiss, F. Alin* , M.robert@univ-reims.fr Abstract The electric step motor is an electromechanical device which converts electrical pulses of stationarity in the system. We show that the electric step motor may function as a low-dimensional chaotic

Reiss, Josh

154

Estimate of fine sediment deposit dynamics on a gravel bar using photography analysis  

E-Print Network [OSTI]

Estimate of fine sediment deposit dynamics on a gravel bar using photography analysis B. CAMENEN1 , M. JODEAU2 , and M. JABALLAH3 Abstract Three different methods to analyse fine sediment deposits the ground. These methods were used to estimate the surface of fine sediment deposits before and after

Paris-Sud XI, Université de

155

Characterizing a tropical deforestation wave: a dynamic spatial analysis of a deforestation hotspot in the  

E-Print Network [OSTI]

Characterizing a tropical deforestation wave: a dynamic spatial analysis of a deforestation hotspot deforestation is the major contemporary threat to global biodiversity, because a diminishing extent of tropical of deforestation. How- ever, it is not a random process, but often moves in waves originating from settled areas

Queensland, University of

156

BIOMECHANICAL ANALYSIS OF TWO SIMPLE DYNAMICAL MODELS FOR THE HUMAN GAIT  

E-Print Network [OSTI]

and expenditure energy for the human body in normal walking models. Both models allow us to adapt a vector the adaptability of the subject to the environment in a reactive way . The high complexity of biomechanical modelsBIOMECHANICAL ANALYSIS OF TWO SIMPLE DYNAMICAL MODELS FOR THE HUMAN GAIT J.Finat1 , F.Montoya2

Llanos, Diego R.

157

Dynamic behavior analysis for a six axis industrial machining BISU Claudiu1,a  

E-Print Network [OSTI]

.). In the aerospace industry, robot starts to be used for complex applications such as drilling, riveting, fiberDynamic behavior analysis for a six axis industrial machining robot BISU Claudiu1,a , CHERIF Mehdi2-yves.knevez@u-bordeaux1.fr Abstract The six axis robots are widely used in automotive industry for their good

Paris-Sud XI, Université de

158

Get Online Support, Feel Better--Sentiment Analysis and Dynamics in an Online Cancer  

E-Print Network [OSTI]

Get Online Support, Feel Better--Sentiment Analysis and Dynamics in an Online Cancer Survivor and Technology The Pennsylvania State University, University Park, PA 16802 American Cancer Society, Inc. 250}@ist.psu.edu, {greta.greer, kenneth.portier}@cancer.org Abstract--Many users join online health communities (OHC

159

Coupled Damage and Plasticity Modelling in Transient Dynamic Analysis of Concrete  

E-Print Network [OSTI]

Coupled Damage and Plasticity Modelling in Transient Dynamic Analysis of Concrete F. Gatuingt Abstract In a concrete structure subjected to an explosion, for example a concrete slab, the material on the same concrete. Computations of split Hopkinson tests on confined concrete, a tensile test with scabbing

160

Flow analysis and nozzle-shape optimization for the cold-gas dynamic-spray process  

E-Print Network [OSTI]

Flow analysis and nozzle-shape optimization for the cold-gas dynamic-spray process M Grujicic1*, W, maximizes the acceleration of the particles. Furthermore, it is found that if the cold-spray nozzle, a significant increase in the average velocity of the particles at the nozzle exit can be obtained

Grujicic, Mica

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


161

Dynamic analysis of a circulating fluidized bed riser  

SciTech Connect (OSTI)

A linear state model is proposed to analyze dynamic behavior of a circulating fluidized bed riser. Different operating regimes were attained with high density polyethylene beads at low and high system inventories. The riser was operated between the classical choking velocity and the upper transport velocity demarcating fast fluidized and transport regimes. At a given riser superficial gas velocity, the aerations fed at the standpipe were modulated resulting in a sinusoidal solids circulation rate that goes into the riser via L-valve. The state model was derived based on the mass balance equation in the riser. It treats the average solids fraction across the entire riser as a state variable. The total riser pressure drop was modeled using Newton’s second law of motion. The momentum balance equation involves contribution from the weight of solids and the wall friction caused by the solids to the riser pressure drop. The weight of solids utilizes the state variable and hence, the riser inventory could be easily calculated. The modeling problem boils down to estimating two parameters including solids friction coefficient and time constant of the riser. It has been shown that the wall friction force acts in the upward direction in fast fluidized regime which indicates that the solids were moving downwards on the average with respect to the riser wall. In transport regimes, the friction acts in the opposite direction. This behavior was quantified based on a sign of Fanning friction factor in the momentum balance equation. The time constant of the riser appears to be much higher in fast fluidized regime than in transport conditions.

Panday, Rupen [REM Engineering PLLC; Shadle, Lawrence J. [U.S. DOE; Guenther, Chris [U.S. DOE

2012-01-01T23:59:59.000Z

162

Dynamic multiplexed analysis method using ion mobility spectrometer  

DOE Patents [OSTI]

A method for multiplexed analysis using ion mobility spectrometer in which the effectiveness and efficiency of the multiplexed method is optimized by automatically adjusting rates of passage of analyte materials through an IMS drift tube during operation of the system. This automatic adjustment is performed by the IMS instrument itself after determining the appropriate levels of adjustment according to the method of the present invention. In one example, the adjustment of the rates of passage for these materials is determined by quantifying the total number of analyte molecules delivered to the ion trap in a preselected period of time, comparing this number to the charge capacity of the ion trap, selecting a gate opening sequence; and implementing the selected gate opening sequence to obtain a preselected rate of analytes within said IMS drift tube.

Belov, Mikhail E [Richland, WA

2010-05-18T23:59:59.000Z

163

Preliminary Dynamic Siol-Structure-Interaction Analysis for the Waste Handling Building  

SciTech Connect (OSTI)

The objective of this analysis package is to document a preliminary dynamic seismic evaluation of a simplified design concept of the Wade Handling Building (WHB). Preliminary seismic ground motions and soil data will be used. Loading criteria of the WHB System Design Description will be used. Detail design of structural members will not be performed.. The results of the analysis will be used to determine preliminary sizes of structural concrete and steel members and to determine whether the seismic response of the structure is within an acceptable level for future License Application design of safety related facilities. In order to complete this preliminary dynamic evaluation to meet the Site Recommendation (SR) schedule, the building configuration was ''frozen in time'' as the conceptual design existed in October 1999. Modular design features and dry or wet waste storage features were intentionally excluded from this preliminary dynamic seismic evaluation. The document was prepared in accordance with the Development Plan for the ''Preliminary/Dynamic Soil Structure Interaction Analysis for the Waste Handling Building'' (CRWMS M&O 2000b), which was completed, in accordance with AP-2.13Q, ''Technical Product Development Planning''.

G. Wagenblast

2000-05-01T23:59:59.000Z

164

The Analysis of Barcelo,Finazzi and Liberati applied to both Alcubierre and Natario Warp Drive Spacetimes: Horizons,Infinite Doppler  

E-Print Network [OSTI]

The Analysis of Barcelo,Finazzi and Liberati applied to both Alcubierre and Natario Warp Drive Loup Residencia de Estudantes Universitas Lisboa Portugal November 3, 2013 Abstract Warp Drives Relativity. There are at the present moment two known solutions: The Alcubierre warp drive discovered in 1994

Paris-Sud XI, Université de

165

The Analysis of Harold White applied to the Natario Warp Drive Spacetime. From 10 times the mass of the Universe to the mass of the  

E-Print Network [OSTI]

The Analysis of Harold White applied to the Natario Warp Drive Spacetime. From 10 times the mass Portugal September 30, 2012 Abstract Warp Drives are solutions of the Einstein Field Equations that allows solutions: The Alcubierre warp drive discovered in 1994 and the Natario warp drive discovered in 2001

Boyer, Edmond

166

How Much Degrees Of Temperature A Warp Drive Achieves When At Superluminal Speeds?? The Analysis Of Gonzalez-Diaz Applied To The  

E-Print Network [OSTI]

How Much Degrees Of Temperature A Warp Drive Achieves When At Superluminal Speeds?? The Analysis Of Gonzalez-Diaz Applied To The Natario Warp Drive Spacetime. Fernando Loup Residencia de Estudantes Universitas Lisboa Portugal February 24, 2013 Abstract Warp Drives are solutions of the Einstein Field

Boyer, Edmond

167

The Analysis of Harold White applied to the Natario Warp Drive Spacetime. From 10 times the mass of the Universe to arbitrary low  

E-Print Network [OSTI]

The Analysis of Harold White applied to the Natario Warp Drive Spacetime. From 10 times the mass with power factors.Warp Drives with two warped regions Fernando Loup Residencia de Estudantes Universitas Lisboa Portugal July 15, 2013 Abstract Warp Drives are solutions of the Einstein Field Equations

Paris-Sud XI, Université de

168

STAT565: APPLIED TIME SERIES ANALYSIS 16:960:565 SPRING 2014, MONDAY 6:40-9:30 PM, ARC 107 BUS  

E-Print Network [OSTI]

STAT565: APPLIED TIME SERIES ANALYSIS 16:960:565 SPRING 2014, MONDAY 6:40-9:30 PM, ARC 107 BUS 1 or by appointment · Email: hxiao@stat.rutgers.edu · Prerequisite. First graduate level courses in mathematical, by Ruey S. Tsay. Wiley, 2010, 3rd. Full text available from MyiLibrary http://lib.myilibrary.com/Open.aspx?id

Shepp, Larry

169

Piping benchmark problems. Volume 1. Dynamic analysis uniform support motion response spectrum method  

SciTech Connect (OSTI)

A set of benchmark problems and solutions have been developed for verifying the adequacy of computer programs used for dynamic analysis and design of nuclear piping systems by the Response Spectrum Method. The problems range from simple to complex configurations which are assumed to experience linear elastic behavior. The dynamic loading is represented by uniform support motion, assumed to be induced by seismic excitation in three spatial directions. The solutions consist of frequencies, participation factors, nodal displacement components and internal force and moment components. Solutions to associated anchor point motion static problems are not included.

Bezler, P.; Hartzman, M.; Reich, M.

1980-08-01T23:59:59.000Z

170

Variational Results and Solutions in Gauge Gravity and a Bifurcation Analysis of Black Hole Orbital Dynamics  

E-Print Network [OSTI]

An analysis of all known spherically symmetric solutions to the field equations originating from the Riemann tensor quadratic curvature Lagrangian is presented. A new exact solution is found for the field equation originating from the "energy-momentum" equation of the gauge gravity theory. Imposing equivalence between the Palatini and standard variational field equations yields an algebraic condition that restricts the number spacetime solutions to gauge gravity. An analysis of a new spherically symmetric solution to the conformal gravity field equations is also presented. Point particle orbital dynamics in both the Schwarzschild and Reissner-Nordstrom black hole spacetimes are analyzed as 2-d conservative bifurcation phenomena. The Schwarzschild dynamics exhibit both saddle-center and transcritical bifurcation points and a calculation of periastron precession is presented that incorporates a phase-plane analysis of the relativistic equations of motion. Level curves of constant energy are illustrated for both timelike and null geodesics and a phase-plane analysis of dynamical invariance between the proper and coordinate time reference frames is discussed. The Reissner-Nordstrom dynamics exhibit saddle-center, transcritical, pseudo-transcritical, and additional bifurcations that combine all three previous bifurcations in various combinations. Periastron precession in the Reissner-Nordstrom spacetime is analyzed using the phase-plane and bifurcation techniques and extended to include a bifurcation point of the dynamics. A numerical solution at these parameter values illustrates that such orbits typically yield a much larger precession value compared to the standard value for timelike, precession. The acausal geodesics considered by Brigman are also discussed and their precession value is calculated.

Bruce Herold Dean

2013-12-29T23:59:59.000Z

171

A macro-micro system architecture analysis framework applied to Smart Grid meter data management systems by Sooraj Prasannan.  

E-Print Network [OSTI]

This thesis proposes a framework for architectural analysis of a system at the Macro and Micro levels. The framework consists of two phases -- Formulation and Analysis. Formulation is made up of three steps -- Identifying ...

Prasannan, Sooraj

2010-01-01T23:59:59.000Z

172

Dynamical system analysis for DBI dark energy interacting with dark matter  

E-Print Network [OSTI]

A dynamical system analysis related to Dirac Born Infeld (DBI) cosmological model has been investigated in this present work. For spatially flat FRW space time, the Einstein field equation for DBI scenario has been used to study the dynamics of DBI dark energy interacting with dark matter. The DBI dark energy model is considered as a scalar field with a nonstandard kinetic energy term. An interaction between the DBI dark energy and dark matter is considered through a phenomenological interaction between DBI scalar field and the dark matter fluid. The field equations are reduced to an autonomous dynamical system by a suitable redefinition of the basic variables. The potential of the DBI scalar field is assumed to be exponential. Finally, critical points are determined, their nature have been analyzed and corresponding cosmological scenario has been discussed.

Nilanjana Mahata; Subenoy Chakraborty

2015-01-19T23:59:59.000Z

173

Dynamical system analysis for DBI dark energy interacting with dark matter  

E-Print Network [OSTI]

A dynamical system analysis related to Dirac Born Infeld (DBI) cosmological model has been investigated in this present work. For spatially flat FRW space time, the Einstein field equation for DBI scenario has been used to study the dynamics of DBI dark energy interacting with dark matter. The DBI dark energy model is considered as a scalar field with a nonstandard kinetic energy term. An interaction between the DBI dark energy and dark matter is considered through a phenomenological interaction between DBI scalar field and the dark matter fluid. The field equations are reduced to an autonomous dynamical system by a suitable redefinition of the basic variables. The potential of the DBI scalar field is assumed to be exponential. Finally, critical points are determined, their nature have been analyzed and corresponding cosmological scenario has been discussed.

Mahata, Nilanjana

2015-01-01T23:59:59.000Z

174

Dynamical Energy Analysis - determining wave energy distributions in complex vibro-acoustical structures  

E-Print Network [OSTI]

We propose a new approach towards determining the distribution of mechanical and acoustic wave energy in complex built-up structures. The technique interpolates between standard Statistical Energy Analysis (SEA) and full ray tracing containing both these methods as limiting case. By writing the flow of ray trajectories in terms of linear phase space operators, it is suggested here to reformulate ray-tracing algorithms in terms of boundary operators containing only short ray segments. SEA can now be identified as a low resolution ray tracing algorithm and typical SEA assumptions can be quantified in terms of the properties of the ray dynamics. The new technique presented here enhances the range of applicability of standard SEA considerably by systematically incorporating dynamical correlations wherever necessary. Some of the inefficiencies inherent in typical ray tracing methods can be avoided using only a limited amount of the geometrical ray information. The new dynamical theory - Dynamical Energy Analysis (DEA) - thus provides a universal approach towards determining wave energy distributions in complex structures.

Gregor Tanner

2008-03-12T23:59:59.000Z

175

General purpose dynamic Monte Carlo with continuous energy for transient analysis  

SciTech Connect (OSTI)

For safety assessments transient analysis is an important tool. It can predict maximum temperatures during regular reactor operation or during an accident scenario. Despite the fact that this kind of analysis is very important, the state of the art still uses rather crude methods, like diffusion theory and point-kinetics. For reference calculations it is preferable to use the Monte Carlo method. In this paper the dynamic Monte Carlo method is implemented in the general purpose Monte Carlo code Tripoli4. Also, the method is extended for use with continuous energy. The first results of Dynamic Tripoli demonstrate that this kind of calculation is indeed accurate and the results are achieved in a reasonable amount of time. With the method implemented in Tripoli it is now possible to do an exact transient calculation in arbitrary geometry. (authors)

Sjenitzer, B. L.; Hoogenboom, J. E. [Delft Univ. of Technology, Dept. of Radiation, Radionuclide and Reactors, Mekelweg 15, 2629JB Delft (Netherlands)

2012-07-01T23:59:59.000Z

176

An analysis of the shear dynamics in Bianchi I cosmologies with $R^n$-gravity  

E-Print Network [OSTI]

We consider the case of $R^n$-gravity and perform a detailed analysis of the dynamics in Bianchi I cosmologies which exhibit {\\it local rotational symmetry} (LRS). We find exact solutions and study their behaviour and stability in terms of the values of the parameter $n$. In particular, we found a set of cosmic histories in which the universe is initially isotropic, then develops shear anisotropies which approaches a constant value.

Jannie A. Leach; Peter K. S. Dunsby; Sante Carloni

2007-02-23T23:59:59.000Z

177

Automated Protocol for the Analysis of Dynamic Mechanical Analyzer Date from Fine Aggregate Asphalt Mixes  

E-Print Network [OSTI]

AUTOMATED PROTOCOL FOR ANALYSIS OF DYNAMIC MECHANICAL ANALYZER DATA FROM FINE AGGREGATE ASPHALT MIXES A Thesis by PEDRO CAVALCANTI DE SOUSA Submitted to the Office of Graduate Studies of Texas A&M University in partial... by PEDRO CAVALCANTI DE SOUSA 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 Approved by: Co-Chairs of Committee, Dallas N. Little Eyad Masad...

Cavalcanti De Sousa, Pedro

2010-10-12T23:59:59.000Z

178

Quasilinear dynamics of a cloud of hot electrons propagating through a plasma in the presence of an externally applied uniform electric field  

SciTech Connect (OSTI)

The propagation of a cloud of hot electrons through a plasma and the generation of Langmuir waves are investigated in the presence of an externally applied uniform electric field. Using numerical simulations of the quasilinear equations the evolution of the electron distribution function and the spectral density of Langmuir waves are monitored in coordinate and velocity space. It is found that the Langmuir waves are enhanced in the presence of the electric field and the distribution functions of the beam and Langmuir waves diffuse toward large velocities. The overall self-similar characteristic of the system is preserved in the presence of the electric field. The average beam velocity is no longer constant and increases with time along its trajectory, but the acceleration is much less than that of free streaming particles. The beam number density plateaus in coordinate space and large scale, small amplitude fluctuations develop on the top of this plateau. The level of the fluctuations depends on the strength of the electric field. We also investigated the influence of the external electric field on the evolution of gas-dynamical parameters such as the height of the plateau in the beam distribution function in velocity space, its upper velocity boundary, and the local velocity spread of the beam. Due to the finite quasilinear relaxation time and spatial inhomogeneity of the electron beam, different parts of the beam are in different states of relaxation. In the region of partial relaxation the plateau is specified by both upper and lower velocity boundaries. The upper boundary of plateau increases linearly with the strength of the electric field but the lower boundary is independent of it. Contrary to the free streaming of a beam in an electric field or quasilinear relaxation in the absence of the electric field, the local velocity spread of the beam increases during its propagation. Some of the electrons at the back of the beam are also transferred by the electric field to its front, so that the height of plateau increases at large distan0009c.

Foroutan, G.; Robinson, P. A.; Zahed, H.; Li, B.; Cairns, I. H. [Physics Department, Faculty of Science, Sahand University of Technology, 51335-1996, Tabriz, Iran and School of Physics, University of Sydney, NSW 2006, Sydney (Australia); School of Physics, University of Sydney, NSW 2006, Sydney (Australia); Physics Department, Faculty of Science, Sahand University of Technology, 51335-1996, Tabriz (Iran, Islamic Republic of); School of Physics, University of Sydney, NSW 2006, Sydney (Australia)

2007-12-15T23:59:59.000Z

179

STAT565: APPLIED TIME SERIES ANALYSIS 16:960:565 SPRING 2013, MONDAY 6:40-9:30 PM, ARC 107 BUS  

E-Print Network [OSTI]

STAT565: APPLIED TIME SERIES ANALYSIS 16:960:565 SPRING 2013, MONDAY 6:40-9:30 PM, ARC 107 BUS 1:30-6:00 pm or by appointment · Email: hxiao@stat.rutgers.edu · Prerequisite. First graduate level courses of Financial Time Series, by Ruey S. Tsay. Wiley, 2010, 3rd. Full text available from MyiLibrary http://lib.myilibrary.com/Open.aspx?id

Shepp, Larry

180

Equivalent circuit analysis applied to the investigation of the driving point impedance of a chemical high frequency analytical instrument  

E-Print Network [OSTI]

LIBRARY A 4 N COLLESE OF TEXAS EQUIVALENT CIRCUIT ANALZSIS APPLIED TO THE ZNVESTIQATION OF THE DRZVINQ POZNT IMPEDANCE OF A CHEMICAL HIQH FREQUENCE AN ALTTZC AL INSTRUMENT A Thesis Laurence Raymond Dausin Subnitted to the Qraduate Sohool... of the Agrioultural and Hechanical College of Texas in partial fulfillment of the requirements for the degree of RASTER OF SCIENCE January 1958 Na J or Sub J eat I Electrioa1 Engineering EQUIVALENT CIRCUIT ANALTSIS APPLIH) TO THE INVESTIGATION OF THE DRIVING...

Dausin, Lawrence Raymond

1958-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "applied dynamic analysis" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
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181

Computational Fluid Dynamic Analysis of the VHTR Lower Plenum Standard Problem  

SciTech Connect (OSTI)

The United States Department of Energy is promoting the resurgence of nuclear power in the U. S. for both electrical power generation and production of process heat required for industrial processes such as the manufacture of hydrogen for use as a fuel in automobiles. The DOE project is called the next generation nuclear plant (NGNP) and is based on a Generation IV reactor concept called the very high temperature reactor (VHTR), which will use helium as the coolant at temperatures ranging from 450 ºC to perhaps 1000 ºC. While computational fluid dynamics (CFD) has not been used for past safety analysis for nuclear reactors in the U. S., it is being considered for safety analysis for existing and future reactors. It is fully recognized that CFD simulation codes will have to be validated for flow physics reasonably close to actual fluid dynamic conditions expected in normal and accident operational situations. To this end, experimental data have been obtained in a scaled model of a narrow slice of the lower plenum of a prismatic VHTR. The present report presents results of CFD examinations of these data to explore potential issues with the geometry, the initial conditions, the flow dynamics and the data needed to fully specify the inlet and boundary conditions; results for several turbulence models are examined. Issues are addressed and recommendations about the data are made.

Richard W. Johnson; Richard R. Schultz

2009-07-01T23:59:59.000Z

182

A dynamic fuel cycle analysis for a heterogeneous thorium-DUPIC recycle in CANDU reactors  

SciTech Connect (OSTI)

A heterogeneous thorium fuel recycle scenario in a Canada deuterium uranium (CANDU) reactor has been analyzed by the dynamic analysis method. The thorium recycling is performed through a dry process which has a strong proliferation resistance. In the fuel cycle model, the existing nuclear power plant construction plan was considered up to 2016, while the nuclear demand growth rate from the year 2016 was assumed to be 0%. In this analysis, the spent fuel inventory as well as the amount of plutonium, minor actinides, and fission products of a multiple thorium recycling fuel cycle were estimated and compared to those of the once-through fuel cycle. The analysis results have shown that the heterogeneous thorium fuel cycle can be constructed through the dry process technology. It is also shown that the heterogeneous thorium fuel cycle can reduce the spent fuel inventory and save on the natural uranium resources when compared with the once-through cycle. (authors)

Jeong, C. J.; Park, C. J.; Choi, H. [Korea Atomic Energy Research Inst., P.O. Box 150, Yuseong, Daejeon, 305-600 (Korea, Republic of)

2006-07-01T23:59:59.000Z

183

Highly parallelized control programming methodologies using multicore CPU and FPGA for highly dynamic multi-DoF mobile robots, applied to the MIT Cheetah  

E-Print Network [OSTI]

This thesis presents highly parallelized control programming methodologies developed for multi-degrees of freedom (DoF) robots capable of highly dynamic movements. In robotic applications that require rapid physical ...

Seok, Sangok

2014-01-01T23:59:59.000Z

184

Simulation and Analysis for Applying the Double-Stage Coupled Heat Pump System in the Villa of Cold Area  

E-Print Network [OSTI]

-to-water double-stage coupled heat pump system, is presented in this paper based on analyzing the characteristics of the villa district heating. Prediction and analysis of the feasibility of the double-stage coupled heat pump system in cold areas were carried...

Yang, L.; Yao, Y.; Ma, Z.

2006-01-01T23:59:59.000Z

185

Prospects for large dynamic range isotope analysis using photon burst mass spectrometry  

SciTech Connect (OSTI)

Photon Burst Mass Spectrometry is a relatively new and untried method which may complement and extend the impressive achievements of Resonance Ionization Mass Spectrometry and Accelerator Mass Spectrometry in the field of large dynamic range isotope analysis. Theoretical predictions indicate that measurements in the 10/sup /minus/11/ to 10/sup /minus/15/ range are possible in a reasonable period of time with zero background. Experimentally only the very first demonstrations of PBMS with stable isotopes have been completed. 8 refs., 1 fig., 1 tab.

Fairbank, W.M. Jr.; LaBelle, R.D.; Keller, R.A.; Miller, C.M.; Poths, J.; Fearey, B.L.

1988-01-01T23:59:59.000Z

186

A Dynamical Systems Analysis of Axisymmetric Accretion in a Schwarzschild Black Hole  

E-Print Network [OSTI]

Stationary, inviscid, axi-symmetric, rotating, transonic accretion flow has been studied in a general relativistic framework, in the Schwarzschild metric; for three different flow geometries - under both polytropic and isothermal conditions. The equilibrium points of the underlying fluid system have been located and an eigenvalue based linear dynamical systems analysis of these critical points has been carried out, to obtain a taxonomic scheme of the critical points. It has hence been shown that only saddle and centre type points can arise for real, physical transonic flow.

Shamreen Iram

2015-02-21T23:59:59.000Z

187

Equilibrium Response and Transient Dynamics Datasets from VEMAP: Vegetation/Ecosystem Modeling and Analysis Project  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

Users of the VEMAP Portal can access input files of numerical data that include monthly and daily files of geographic data, soil and site files, scenario files, etc. Model results from Phase I, the Equilibrium Response datasets, are available through the NCAR anonymous FTP site at http://www.cgd.ucar.edu/vemap/vresults.html. Phase II, Transient Dynamics, include climate datasets, models results, and analysis tools. Many supplemental files are also available from the main data page at http://www.cgd.ucar.edu/vemap/datasets.html.

188

Applied Science  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAbout theOFFICEAmesApplication Acceleration onto MeasurementsApplied

189

Scaling analysis of bio-molecular dynamics derived from elastic incoherent neutron scattering experiments  

SciTech Connect (OSTI)

Numerous neutron scattering studies of bio-molecular dynamics employ a qualitative analysis of elastic scattering data and atomic mean square displacements. We provide a new quantitative approach showing that the intensity at zero energy exchange can be a rich source of information of bio-structural fluctuations on a pico- to nano-second time scale. Elastic intensity scans performed either as a function of the temperature (back-scattering) and/or by varying the instrumental resolution (time of flight spectroscopy) yield the activation parameters of molecular motions and the approximate structural correlation function in the time domain. The two methods are unified by a scaling function, which depends on the ratio of correlation time and instrumental resolution time. The elastic scattering concept is illustrated with a dynamic characterization of alanine-dipeptide, protein hydration water, and water-coupled protein motions of lysozyme, per-deuterated c-phycocyanin (CPC) and hydrated myoglobin. The complete elastic scattering function versus temperature, momentum exchange, and instrumental resolution is analyzed instead of focusing on a single cross-over temperature of mean square displacements at the apparent onset temperature of an-harmonic motions. Our method predicts the protein dynamical transition (PDT) at T{sub d} from the collective (?) structural relaxation rates of the solvation shell as input. By contrast, the secondary (?) relaxation enhances the amplitude of fast local motions in the vicinity of the glass temperature T{sub g}. The PDT is specified by step function in the elastic intensity leading from elastic to viscoelastic dynamic behavior at a transition temperature T{sub d}.

Doster, W. [Physik-Department, Technische Universität München, D-85748 Garching (Germany)] [Physik-Department, Technische Universität München, D-85748 Garching (Germany); Nakagawa, H. [Jülich Centre for Neutron Science, Forschungszentrum Jülich GmbH, Outstation at MLZ, Lichtenbergstraße 1, 85747 Garching (Germany) [Jülich Centre for Neutron Science, Forschungszentrum Jülich GmbH, Outstation at MLZ, Lichtenbergstraße 1, 85747 Garching (Germany); Japan Atomic Energy Agency, Quantum Beam Science Directorate, Tokai, Ibaraki 319-1195 (Japan); Appavou, M. S. [Jülich Centre for Neutron Science, Forschungszentrum Jülich GmbH, Outstation at MLZ, Lichtenbergstraße 1, 85747 Garching (Germany)] [Jülich Centre for Neutron Science, Forschungszentrum Jülich GmbH, Outstation at MLZ, Lichtenbergstraße 1, 85747 Garching (Germany)

2013-07-28T23:59:59.000Z

190

Unsteady adjoint analysis for output sensitivity and mesh adaptation  

E-Print Network [OSTI]

Adjoint analysis in computational fluid dynamics (CFD) has been applied to design optimization and mesh adaptation, but due to the relative expense of unsteady analysis these applications have predominantly been for steady ...

Krakos, Joshua Ambre

2012-01-01T23:59:59.000Z

191

Applying Nonlinear Signal Analysis Technologies to Flame Scanner Signals to Improve Staging of Cyclone Boilers for NOx control  

SciTech Connect (OSTI)

Cyclone{trademark} boiler owners continue to drive down NO{sub x} emissions by increasingly sophisticated staging and air distribution schemes. For example, Alliant Energy has employed RMT's SmartBurn{reg_sign} technology, and Ameren UE has pioneered neural nets to reduce emissions. Over the last 11 years under sponsorship of EPRI, the team of ORNL and B&W has developed pulverized coal burner diagnostic technology by applying nonlinear signal analysis techniques to flame scanner signals. The team has extended the technology to cyclones to facilitate deeper staging of the cyclones to reduce NO{sub x} emissions. Development projects were conducted at the Alliant Energy Edgewater Units 3 and 4, and Ameren UE Sioux Unit 1. Nonlinear analysis statistics were correlated to upsets in cyclone operation resulting from poor air distribution in the burner and barrel. The team demonstrated that the lighter and main flame scanners can be used to independently guide adjustments to the burner and barrel.

Flynn, T. J. [Babcock and Wilcox Company, The; Bailey, R. T. [Babcock and Wilcox Company, The; Fuller, T. A. [Babcock and Wilcox Company, The; FINNEY, Charles E A [ORNL; Daw, C Stuart [ORNL; Stallings, J. [Electric Power Research Institute (EPRI); Himes, R. [Electric Power Research Institute (EPRI); Bermke, R. [Alliant Energy

2006-08-01T23:59:59.000Z

192

ECE 432/532 Dynamics of Electromechanical Energy Conversion Catalog Description: Generalized machine theory. Techniques for dynamic analysis of  

E-Print Network [OSTI]

drives Transfer functions and basic control theory Electric machine and drives simulation Measurable. Learning Resources: Mohan, Advanced Electric Drives, MNPERE, 2001 #12;Students with Disabilities-axis equivalent and develop the electrical and mechanical performance equations for dynamic operation (ABET

193

Cosmic microwave background constraints on dark energy dynamics: analysis beyond the power spectrum  

E-Print Network [OSTI]

We consider the distribution of the non-Gaussian signal induced by weak lensing on the primary total intensity cosmic microwave background (CMB) anisotropies. Our study focuses on the three point statistics exploiting an harmonic analysis based on the CMB bispectrum. By considering the three multipoles as independent variables, we reveal a complex structure of peaks and valleys determined by the re-projection of the primordial acoustic oscillations through the lensing mechanism. We study the dependence of this system on the expansion rate at the epoch in which the weak lensing power injection is relevant, probing the dark energy equation of state at redshift corresponding to the equivalence with matter or higher ($w_\\infty$). We evaluate the impact of the bispectrum observable on the CMB capability of constraining the dark energy dynamics. We perform a maximum likelihood analysis by varying the dark energy abundance, the present equation of state $w_0$ and $w_\\infty$. We show that the projection degeneracy affecting a pure power spectrum analysis in total intensity is broken if the bispectrum is taken into account. For a Planck-like experiment, assuming nominal performance, no foregrounds or systematics, and fixing all the parameters except $w_0$, $w_\\infty$ and the dark energy abundance, a percent and ten percent precision measure of $w_0$ and $w_\\infty$ is achievable from CMB data only. These results indicate that the detection of the weak lensing signal by the forthcoming CMB probes may be relevant to gain insight into the dark energy dynamics at the onset of cosmic acceleration.

Fabio Giovi; Carlo Baccigalupi; Francesca Perrotta

2005-05-18T23:59:59.000Z

194

Analysis of liquid natural gas as a truck fuel: a system dynamics approach  

SciTech Connect (OSTI)

The purpose of this analysis is to evaluate the potential for growth in use of liquid natural gas (LNG) fueled trucks. . A system dynamics model was constructed for the analysis and a variety of scenarios were investigated. The analysis considers the economics of LNG fuel in the context of the trucking industry to identify barriers to the increased use of LNG trucks and potential interventions or leverage points which may overcome these barriers. The study showed that today, LNG use in trucks is not yet economically viable. A large change in the savings from fuel cost or capital cost is needed for the technology to take off. Fleet owners have no way now to benefit from the environmental benefits of LNG fuel nor do they benefit from the clean burning nature of the fuel. Changes in the fuel cost differential between diesel and LNG are not a research issue. However, quantifying the improvements in reliability and wear from the use of clean fuel could support increased maintenance and warranty periods. Many people involved in the use of LNG for trucks believe that LNG has the potential to occupy a niche within the larger diesel truck business. But if LNG in trucks can become economic, the spread of fuel stations and technology improvements could lead to LNG trucks becoming the dominant technology. An assumption in our simulation work is that LNG trucks will be purchased when economically attractive. None of the simulation results show LNG becoming economic but then only to the level of a niche market.

Bray, M.A.; Sebo, D.E.; Mason, T.L.; Mills, J.I.; Rice, R.E.

1996-10-01T23:59:59.000Z

195

Nonlinear dynamics analysis of a membrane Stirling engine: Starting and stable operation  

E-Print Network [OSTI]

This paper presents the work devoted to the study of the operation of a miniaturized membrane Stirling engine. Indeed, such an engine relies on the dynamic coupling of the motion of two membranes to achieve a prime mover Stirling thermodynamic cycle. The modelling of the system introduces the large vibration amplitudes of the membrane as well as the nonlinear dissipative effects associated to the fluid flow within the engine. The nonlinearities are expressed as polynomial functions with quadratic and cubic terms. This paper displays the stability analysis to predict the starting of the engine and the instability problem which leads to the steady state behaviour. The centre manifold - normal form theory is used to obtain the simplest expression for the limit cycle amplitudes. The approach allows the reduction of the number of equations of the original system in order to obtain a simplified system, without loosing the dynamics of the original system as well as the contributions of non-linear terms. The model in...

Formosa, Fabien

2013-01-01T23:59:59.000Z

196

Multi analysis of the effect of grain size on the dynamic behavior of microalloyed steels  

SciTech Connect (OSTI)

This study presents some aspects of multiscale analysis and modeling of variously structured materials behavior in quasi-static and dynamic loading conditions. The investigation was performed for two different materials of common application: high strength microalloyed steel (HSLA, X65), and as a reference more ductile material, Ti-IF steel. The MaxStrain technique and one pass hot rolling processes were used to produce ultrafine-grained and coarse-grained materials. The efficiency and inhomogeneity of microstructure refinement were examined because of their important role in work hardening and the initiation and growth of fracture under tensile stresses. It is shown that the combination of microstructures characterized by their different features contributes to the dynamic behavior and final properties of the product. In particular, the role of solute segregation at grain boundaries as well as precipitation of carbonitrides in coarse and ultrafine-grained structures is assessed. The predicted mechanical response of ultrafine-grained structures, using modified KHL model is in reasonable agreement with the experiments. This is a result of proper representation of the role of dislocation structure and the grain boundary and their multiscale effects included in this model.

Zurek, Anna K [Los Alamos National Laboratory; Muszka, K [AGH; Majta, J [AGH; Wielgus, M [AGH

2009-01-01T23:59:59.000Z

197

On quantitative analysis of interband recombination dynamics: Theory and application to bulk ZnO  

SciTech Connect (OSTI)

The issue of the quantitative analysis of time-resolved photoluminescence experiments is addressed by developing and describing two approaches for determination of unimolecular lifetime, bimolecular recombination coefficient, and equilibrium free-carrier concentration, based on a quite general second-order expression of the electron-hole recombination rate. Application to the case of band-edge emission of ZnO single crystals is reported, evidencing the signature of sub-nanosecond second-order recombination dynamics for optical transitions close to the interband excitation edge. The resulting findings are in good agreement with the model prediction and further confirm the presence, formerly evidenced in literature by non-optical methods, of near-surface conductive layers in ZnO crystals with sheet charge densities of about 3–5×10{sup 13} cm{sup ?2}.

Lettieri, S. [Institute for Superconductors, Oxides and Innovative Materials, National Research Council (CNR-SPIN), U.O.S. Napoli, Via Cintia, I-80126 Napoli (Italy)] [Institute for Superconductors, Oxides and Innovative Materials, National Research Council (CNR-SPIN), U.O.S. Napoli, Via Cintia, I-80126 Napoli (Italy); Capello, V.; Santamaria, L. [Physics Department, University of Naples “Federico II,” Via Cintia I-80126 Napoli (Italy)] [Physics Department, University of Naples “Federico II,” Via Cintia I-80126 Napoli (Italy); Maddalena, P. [Institute for Superconductors, Oxides and Innovative Materials, National Research Council (CNR-SPIN), U.O.S. Napoli, Via Cintia, I-80126 Napoli (Italy) [Institute for Superconductors, Oxides and Innovative Materials, National Research Council (CNR-SPIN), U.O.S. Napoli, Via Cintia, I-80126 Napoli (Italy); Physics Department, University of Naples “Federico II,” Via Cintia I-80126 Napoli (Italy)

2013-12-09T23:59:59.000Z

198

Retrospective Analysis of Communication Events - Understanding the Dynamics of Collaborative Multi-Party Discourse  

SciTech Connect (OSTI)

This research is aimed at understanding the dynamics of collaborative multi-party discourse across multiple communication modalities. Before we can truly make sig-nificant strides in devising collaborative communication systems, there is a need to understand how typical users utilize com-putationally supported communications mechanisms such as email, instant mes-saging, video conferencing, chat rooms, etc., both singularly and in conjunction with traditional means of communication such as face-to-face meetings, telephone calls and postal mail. Attempting to un-derstand an individual’s communications profile with access to only a single modal-ity is challenging at best and often futile. Here, we discuss the development of RACE – Retrospective Analysis of Com-munications Events – a test-bed prototype to investigate issues relating to multi-modal multi-party discourse.

Cowell, Andrew J.; Haack, Jereme N.; McColgin, Dave W.

2006-06-08T23:59:59.000Z

199

DYNAPCON: a computer code for dynamic analysis of prestressed concrete structures. [LMFBR  

SciTech Connect (OSTI)

A finite element computer code for the transient analysis of prestressed concrete reactor vessels (PCRVs) for LMFBR containment is described. The method assumes rotational symmetry of the structure. Time integration is by an explicit method. The quasistatic prestressing operation of the PCRV model is performed by a dynamic relaxation technique. The material model accounts for the crushing and tensile cracking in arbitrary direction in concrete and the elastic-plastic behavior of reinforcing steel. The variation of the concrete tensile cracking and compressive crushing limits with strain rate is taken into account. Relative slip is permitted between the concrete and tendons. Several example solutions are presented and compared with experimental results. These sample problems range from simply supported beams to small scale models of PCRV's. It is shown that the analytical methods correlate quite well with experimental results, although in the vicinity of the failure load the response of the models tend to be quite sensitive to input parameters.

Marchertas, A.H.

1982-09-01T23:59:59.000Z

200

Cosmology in one dimension: Symmetry role in dynamics, mass oriented approaches to fractal analysis  

E-Print Network [OSTI]

The distribution of visible matter in the universe, such as galaxies and galaxy clusters, has its origin in the week fluctuations of density that existed at the epoch of recombination. The hierarchical distribution of the universe, with its galaxies, clusters and super-clusters of galaxies indicates the absence of a natural length scale. In the Newtonian formulation, numerical simulations of a one-dimensional system permit us to precisely follow the evolution of an ensemble of particles starting with an initial perturbation in the Hubble flow. The limitation of the investigation to one dimension removes the necessity to make approximations in calculating the gravitational field and, on the whole, the system dynamics. It is then possible to accurately follow the trajectories of particles for a long time. The simulations show the emergence of a self-similar hierarchical structure in both the phase space and the configuration space and invites the implementation of a multifractal analysis. Here, after showing th...

Miller, Bruce N; Shiozawa, Yui

2015-01-01T23:59:59.000Z

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


201

Design and environmental force-induced moment analysis of a shallow water oceanographic mooring dynamic antenna  

E-Print Network [OSTI]

waterway, Port, Coastal and Ocean Engineering, Vol. 111, No.of Science in Engineering Sciences (Applied Ocean Sciences)Science in Engineering Sciences (Applied Ocean Sciences) by

Nguyen, Nam Huu

2012-01-01T23:59:59.000Z

202

Extending the Capabilities of the Mooring Analysis Program: A Survey of Dynamic Mooring Line Theories for Integration into FAST: Preprint  

SciTech Connect (OSTI)

Techniques to model dynamic mooring lines come in various forms. The most widely used models include either a heuristic representation of the physics (such as a Lumped-Mass, LM, system), a Finite-Element Analysis (FEA) discretization of the lines (discretized in space), or a Finite-Difference (FD) model (which is discretized in both space and time). In this paper, we explore the features of the various models, weigh the advantages of each, and propose a plan for implementing one dynamic mooring line model into the open-source Mooring Analysis Program (MAP). MAP is currently used as a module for the FAST offshore wind turbine computer-aided engineering (CAE) tool to model mooring systems quasi-statically, although dynamic mooring capabilities are desired. Based on the exploration in this manuscript, the lumped-mass representation is selected for implementation in MAP based on its simplicity, computational cost, and ability to provide similar physics captured by higher-order models.

Masciola, M.; Jonkman, J.; Robertson, A.

2014-03-01T23:59:59.000Z

203

Complex Dynamics  

E-Print Network [OSTI]

Complex Dynamics Bernardo Da Costa, Koushik Ramachandran, Jingjing Qu, and I had a two semester learning seminar in complex analysis and potential ...

204

Analysis of supercritical CO{sub 2} cycle control strategies and dynamic response for Generation IV Reactors.  

SciTech Connect (OSTI)

The analysis of specific control strategies and dynamic behavior of the supercritical carbon dioxide (S-CO{sub 2}) Brayton cycle has been extended to the two reactor types selected for continued development under the Generation IV Nuclear Energy Systems Initiative; namely, the Very High Temperature Reactor (VHTR) and the Sodium-Cooled Fast Reactor (SFR). Direct application of the standard S-CO{sub 2} recompression cycle to the VHTR was found to be challenging because of the mismatch in the temperature drop of the He gaseous reactor coolant through the He-to-CO{sub 2} reactor heat exchanger (RHX) versus the temperature rise of the CO{sub 2} through the RHX. The reference VHTR features a large temperature drop of 450 C between the assumed core outlet and inlet temperatures of 850 and 400 C, respectively. This large temperature difference is an essential feature of the VHTR enabling a lower He flow rate reducing the required core velocities and pressure drop. In contrast, the standard recompression S-CO{sub 2} cycle wants to operate with a temperature rise through the RHX of about 150 C reflecting the temperature drop as the CO{sub 2} expands from 20 MPa to 7.4 MPa in the turbine and the fact that the cycle is highly recuperated such that the CO{sub 2} entering the RHX is effectively preheated. Because of this mismatch, direct application of the standard recompression cycle results in a relatively poor cycle efficiency of 44.9%. However, two approaches have been identified by which the S-CO{sub 2} cycle can be successfully adapted to the VHTR and the benefits of the S-CO{sub 2} cycle, especially a significant gain in cycle efficiency, can be realized. The first approach involves the use of three separate cascaded S-CO{sub 2} cycles. Each S-CO{sub 2} cycle is coupled to the VHTR through its own He-to-CO{sub 2} RHX in which the He temperature is reduced by 150 C. The three respective cycles have efficiencies of 54, 50, and 44%, respectively, resulting in a net cycle efficiency of 49.3 %. The other approach involves reducing the minimum cycle pressure significantly below the critical pressure such that the temperature drop in the turbine is increased while the minimum cycle temperature is maintained above the critical temperature to prevent the formation of a liquid phase. The latter approach also involves the addition of a precooler and a third compressor before the main compressor to retain the benefits of compression near the critical point with the main compressor. For a minimum cycle pressure of 1 MPa, a cycle efficiency of 49.5% is achieved. Either approach opens up the door to applying the SCO{sub 2} cycle to the VHTR. In contrast, the SFR system typically has a core outlet-inlet temperature difference of about 150 C such that the standard recompression cycle is ideally suited for direct application to the SFR. The ANL Plant Dynamics Code has been modified for application to the VHTR and SFR when the reactor side dynamic behavior is calculated with another system level computer code such as SAS4A/SYSSYS-1 in the SFR case. The key modification involves modeling heat exchange in the RHX, accepting time dependent tabular input from the reactor code, and generating time dependent tabular input to the reactor code such that both the reactor and S-CO{sub 2} cycle sides can be calculated in a convergent iterative scheme. This approach retains the modeling benefits provided by the detailed reactor system level code and can be applied to any reactor system type incorporating a S-CO{sub 2} cycle. This approach was applied to the particular calculation of a scram scenario for a SFR in which the main and intermediate sodium pumps are not tripped and the generator is not disconnected from the electrical grid in order to enhance heat removal from the reactor system thereby enhancing the cooldown rate of the Na-to-CO{sub 2} RHX. The reactor side is calculated with SAS4A/SASSYS-1 while the S-CO{sub 2} cycle is calculated with the Plant Dynamics Code with a number of iterations over a timescale of 500 seconds. It is found that the RHX u

Moisseytsev, A.; Sienicki, J. J. (Nuclear Engineering Division)

2011-04-12T23:59:59.000Z

205

Dynamics of quantum spin liquid and spin solid phases in IPA-CuCl3 under an applied magnetic field studied with neutron scattering  

SciTech Connect (OSTI)

Inelastic and elastic neutron scattering is used to study spin correlations in the quasi-one-dimensional quantum antiferromagnet IPA-CuCl3 in strong applied magnetic fields. A condensation of magnons and commensurate transverse long-range ordering is observe at a critical field Hc=9.5 T. The field dependencies of the energies and polarizations of all magnon branches are investigated both below and above the transition point. Their dispersion is measured across the entire one-dimensional Brillouin zone in magnetic fields up to 14 T. The critical wave vector of magnon spectrum truncation Masuda et al., Phys. Rev. Lett. 96, 047210 2006 is found to shift from hc0,35 at HHC to hc=0.25 for HHC. A drastic reduction of magnon bandwidths in the ordered phase Garlea et al., Phys. Rev. Lett. 98, 167202 2007 is observed and studied in detail. New features of the spectrum, presumably related to this bandwidth collapse, are observed just above the transition field.

Zheludev, Andrey I [ORNL; Garlea, Vasile O [ORNL; Masuda, T. [Yokohama City University, Japan; Manaka, H. [Kagoshima University, Kagoshima JAPAN; Regnault, L.-P. [CEA, Grenoble, France; Ressouche, E. [CEA, Grenoble, France; Grenier, B. [CEA, Grenoble, France; Chung, J.-H. [National Institute of Standards and Technology (NIST); Qiu, Y. [National Institute of Standards and Technology (NIST); Habicht, Klaus [Hahn-Meitner Institut, Berlin, Germany; Kiefer, K. [Hahn-Meitner Institut, Berlin, Germany; Boehm, Martin [Institut Laue-Langevin (ILL)

2007-01-01T23:59:59.000Z

206

Stability of hypersonic reacting stagnation flow of a detonatable gas mixture by dynamical systems analysis  

SciTech Connect (OSTI)

The stability characteristics of the reacting hypersonic flow of the fuel/oxidizer mixture in the stagnation region of a blunt body are studied. The conditions for oscillations of the combustion front are assumed to be determined mainly by the flow conditions at the stagnation region. The density at the stagnation region is assumed to be constant at hypersonic flow conditions. By assuming a simplified flow model, the time dependent flow equations, including the heat addition due to the chemical reactions, are reduced to a second-order nonlinear differential equation for the instantaneous temperature. The solutions are analyzed assuming a one-step chemical reaction with zero-order and first-order processes using dynamical systems methods. These methods are used to determine the stability boundaries in terms of the flow and chemical reaction parameters. It is shown that the zero-order reaction has nonperiodic solutions that may lead to explosion whereas the first-order and higher-order reactions may have periodic solutions indicating oscillations. The zero-order analysis also reaffirms the requirements for a minimum size blunt body for the establishment of a detonation (in agreement with classical detonation theory) and the first-order analysis indicates a minimum body size for establishment of oscillations. The oscillation frequencies are calculated using the small perturbation approximation for the temperature oscillations. These frequencies are compared with results from published data on spheres and hemisphere cylindrical bodies fired into hydrogen-oxygen and acetylene oxygen mixtures. Very good agreement is found between the measured and calculated results.

Tivanov, G.; Rom, J. [Technion-Israel Inst. of Tech., Haifa (Israel)] [Technion-Israel Inst. of Tech., Haifa (Israel)

1995-12-01T23:59:59.000Z

207

Dynamic Analysis of Electrical Power Grid Delivery: Using Prime Mover Engines to Balance Dynamic Wind Turbine Output  

SciTech Connect (OSTI)

This paper presents an investigation into integrated wind + combustion engine high penetration electrical generation systems. Renewable generation systems are now a reality of electrical transmission. Unfortunately, many of these renewable energy supplies are stochastic and highly dynamic. Conversely, the existing national grid has been designed for steady state operation. The research team has developed an algorithm to investigate the feasibility and relative capability of a reciprocating internal combustion engine to directly integrate with wind generation in a tightly coupled Hybrid Energy System. Utilizing the Idaho National Laboratory developed Phoenix Model Integration Platform, the research team has coupled demand data with wind turbine generation data and the Aspen Custom Modeler reciprocating engine electrical generator model to investigate the capability of reciprocating engine electrical generation to balance stochastic renewable energy.

Diana K. Grauer

2011-10-01T23:59:59.000Z

208

Computational Fluid Dynamics Analysis of Very High Temperature Gas-Cooled Reactor Cavity Cooling System  

SciTech Connect (OSTI)

The design of passive heat removal systems is one of the main concerns for the modular very high temperature gas-cooled reactors (VHTR) vessel cavity. The reactor cavity cooling system (RCCS) is a key heat removal system during normal and off-normal conditions. The design and validation of the RCCS is necessary to demonstrate that VHTRs can survive to the postulated accidents. The computational fluid dynamics (CFD) STAR-CCM+/V3.06.006 code was used for three-dimensional system modeling and analysis of the RCCS. A CFD model was developed to analyze heat exchange in the RCCS. The model incorporates a 180-deg section resembling the VHTR RCCS experimentally reproduced in a laboratory-scale test facility at Texas A&M University. All the key features of the experimental facility were taken into account during the numerical simulations. The objective of the present work was to benchmark CFD tools against experimental data addressing the behavior of the RCCS following accident conditions. Two cooling fluids (i.e., water and air) were considered to test the capability of maintaining the RCCS concrete walls' temperature below design limits. Different temperature profiles at the reactor pressure vessel (RPV) wall obtained from the experimental facility were used as boundary conditions in the numerical analyses to simulate VHTR transient evolution during accident scenarios. Mesh convergence was achieved with an intensive parametric study of the two different cooling configurations and selected boundary conditions. To test the effect of turbulence modeling on the RCCS heat exchange, predictions using several different turbulence models and near-wall treatments were evaluated and compared. The comparison among the different turbulence models analyzed showed satisfactory agreement for the temperature distribution inside the RCCS cavity medium and at the standpipes walls. For such a complicated geometry and flow conditions, the tested turbulence models demonstrated that the realizable k-epsilon model with two-layer all y+ wall treatment performs better than the other k-epsilon and k-omega turbulence models when compared to the experimental results and the Reynolds stress transport turbulence model results. A scaling analysis was developed to address the distortions introduced by the CFD model in simulating the physical phenomena inside the RCCS system with respect to the full plant configuration. The scaling analysis demonstrated that both the experimental facility and the CFD model achieve a satisfactory resemblance of the main flow characteristics inside the RCCS cavity region, and convection and radiation heat exchange phenomena are properly scaled from the actual plant.

Angelo Frisani; Yassin A. Hassan; Victor M. Ugaz

2010-11-02T23:59:59.000Z

209

A multi-tier framework for dynamic data collection, analysis, and visualization  

E-Print Network [OSTI]

This thesis describes a framework for collecting, analyzing, and visualizing dynamic data, particularly data gathered through Web questionnaires. The framework addresses challenges such as promoting user participation, ...

Ke, Xian, 1981-

2004-01-01T23:59:59.000Z

210

Coupled computational fluid dynamics and heat transfer analysis of the VHTR lower plenum.  

SciTech Connect (OSTI)

The very high temperature reactor (VHTR) concept is being developed by the US Department of Energy (DOE) and other groups around the world for the future generation of electricity at high thermal efficiency (> 48%) and co-generation of hydrogen and process heat. This Generation-IV reactor would operate at elevated exit temperatures of 1,000-1,273 K, and the fueled core would be cooled by forced convection helium gas. For the prismatic-core VHTR, which is the focus of this analysis, the velocity of the hot helium flow exiting the core into the lower plenum (LP) could be 35-70 m/s. The impingement of the resulting gas jets onto the adiabatic plate at the bottom of the LP could develop hot spots and thermal stratification and inadequate mixing of the gas exiting the vessel to the turbo-machinery for energy conversion. The complex flow field in the LP is further complicated by the presence of large cylindrical graphite posts that support the massive core and inner and outer graphite reflectors. Because there are approximately 276 channels in the VHTR core from which helium exits into the LP and a total of 155 support posts, the flow field in the LP includes cross flow, multiple jet flow interaction, flow stagnation zones, vortex interaction, vortex shedding, entrainment, large variation in Reynolds number (Re), recirculation, and mixing enhancement and suppression regions. For such a complex flow field, experimental results at operating conditions are not currently available. Instead, the objective of this paper is to numerically simulate the flow field in the LP of a prismatic core VHTR using the Sandia National Laboratories Fuego, which is a 3D, massively parallel generalized computational fluid dynamics (CFD) code with numerous turbulence and buoyancy models and simulation capabilities for complex gas flow fields, with and without thermal effects. The code predictions for simpler flow fields of single and swirling gas jets, with and without a cross flow, are validated using reported experimental data and theory. The key processes in the LP are identified using phenomena identification and ranking table (PIRT). It may be argued that a CFD code that accurately simulates simplified, single-effect flow fields with increasing complexity is likely to adequately model the complex flow field in the VHTR LP, subject to a future experimental validation. The PIRT process and spatial and temporal discretizations implemented in the present analysis using Fuego established confidence in the validation and verification (V and V) calculations and in the conclusions reached based on the simulation results. The performed calculations included the helicoid vortex swirl model, the dynamic Smagorinsky large eddy simulation (LES) turbulence model, participating media radiation (PMR), and 1D conjugate heat transfer (CHT). The full-scale, half-symmetry LP mesh used in the LP simulation included unstructured hexahedral elements and accounted for the graphite posts, the helium jets, the exterior walls, and the bottom plate with an adiabatic outer surface. Results indicated significant enhancements in heat transfer, flow mixing, and entrainment in the VHTR LP when using swirling inserts at the exit of the helium flow channels into the LP. The impact of using various swirl angles on the flow mixing and heat transfer in the LP is qualified, including the formation of the central recirculation zone (CRZ), and the effect of LP height. Results also showed that in addition to the enhanced mixing, the swirling inserts result in negligible additional pressure losses and are likely to eliminate the formation of hot spots.

El-Genk, Mohamed S. (University of New Mexico, Albuquerque, NM); Rodriguez, Salvador B.

2010-12-01T23:59:59.000Z

211

The comparison of four dynamic systems-based software packages: Translation and sensitivity analysis  

E-Print Network [OSTI]

The comparison of four dynamic systems-based software packages: Translation and sensitivity Wetness Energy Balance (SWEB) model for canopy surface wetness has been translated into four software pack of the model. Ã? 2005 Elsevier Ltd. All rights reserved. Keywords: Model comparison; Dynamic simulation; System

Vermont, University of

212

Dynamic programming applied to electromagnetic satellite actuation  

E-Print Network [OSTI]

Electromagnetic formation flight (EMFF) is an enabling technology for a number of space mission architectures. While much work has been done for EMFF control for large separation distances, little work has been done for ...

Eslinger, Gregory John

2013-01-01T23:59:59.000Z

213

An Analysis of the Interactions between the Sem-5 SH3 Domain and Its Ligands Using Molecular Dynamics, Free Energy Calculations,  

E-Print Network [OSTI]

to the construction of van der Waals interaction energy profiles for each ligand as well as for wild-type and mutant Dynamics, Free Energy Calculations, and Sequence Analysis Wei Wang, Wendell A. Lim,, Araz Jakalian,§,# Jian the interactions between Sem-5 and its ligands using molecular dynamics (MD), free energy calculations

Wang, Wei

214

Nuclear Dynamics Consequence Analysis (NDCA) for the Disposal of Spent Nuclear Fuel in an Underground Geologic Repository - Volume 3: Appendices  

SciTech Connect (OSTI)

The United States Department of Energy Office of Environmental Management's (DOE/EM's) National Spent Nuclear Fuel Program (NSNFP), through a collaboration between Sandia National Laboratories (SNL) and Idaho National Engineering and Environmental Laboratory (INEEL), is conducting a systematic Nuclear Dynamics Consequence Analysis (NDCA) of the disposal of SNFs in an underground geologic repository sited in unsaturated tuff. This analysis is intended to provide interim guidance to the DOE for the management of the SNF while they prepare for final compliance evaluation. This report presents results from a Nuclear Dynamics Consequence Analysis (NDCA) that examined the potential consequences and risks of criticality during the long-term disposal of spent nuclear fuel owned by DOE-EM. This analysis investigated the potential of post-closure criticality, the consequences of a criticality excursion, and the probability frequency for post-closure criticality. The results of the NDCA are intended to provide the DOE-EM with a technical basis for measuring risk which can be used for screening arguments to eliminate post-closure criticality FEPs (features, events and processes) from consideration in the compliance assessment because of either low probability or low consequences. This report is composed of an executive summary (Volume 1), the methodology and results of the NDCA (Volume 2), and the applicable appendices (Volume 3).

Taylor, L.L.; Wilson, J.R. (INEEL); Sanchez, L.C.; Aguilar, R.; Trellue, H.R.; Cochrane, K. (SNL); Rath, J.S. (New Mexico Engineering Research Institute)

1998-10-01T23:59:59.000Z

215

Dynamical analysis on heavy-ion fusion reactions near Coulomb barrier  

E-Print Network [OSTI]

The shell correction is proposed in the improved isospin dependent quantum molecular dynamics (ImIQMD) model, which plays an important role in heavy-ion fusion reactions near Coulomb barrier. By using the ImIQMD model, the static and dynamical fusion barriers, dynamical barrier distribution in the fusion reactions are analyzed systematically. The fusion and capture excitation functions for a series of reaction systems are calculated and compared with experimental data. It is found that the fusion cross sections for neutron-rich systems increase obviously, and the strong shell effects of two colliding nuclei result in a decrease of the fusion cross sections at the sub-barrier energies. The lowering of the dynamical fusion barriers favors the enhancement of the sub-barrier fusion cross sections, which is related to the nucleon transfer and the neck formation in the fusion reactions.

Zhao-Qing Feng; Gen-Ming Jin; Feng-Shou Zhang

2007-11-23T23:59:59.000Z

216

Analysis of condensate banking dynamics in a gas condensate reservoir under different injection schemes  

E-Print Network [OSTI]

condensate reservoir under natural depletion, and injection of methane, injection of carbon dioxide, produced gas recycling and water injection. To monitor the condensate banking dynamics near the wellbore area, such as oil saturation and compositional...

Sandoval Rodriguez, Angelica Patricia

2002-01-01T23:59:59.000Z

217

Vibration analysis and control of dynamics effects of moving vehicles over bridges  

E-Print Network [OSTI]

An extensive review and evaluation of the optimal models to asses the dynamic effects of moving vehicle on a bridge is performed. These models, with increasing grades of complexity, represent the best approximation of the ...

Medina Andrés, Violeta

2006-01-01T23:59:59.000Z

218

Essays on Price Dynamics, Welfare Analysis, Household Food Insecurity in Mexico  

E-Print Network [OSTI]

prices, and determinants of household food insecurity are discussed and presented in three separate essays. In the first essay, the dynamic information flows among prices of important agricultural commodities in the United States (U.S.) and Mexico...

Magana Lemus, David

2013-09-20T23:59:59.000Z

219

Computational Fluid Dynamics Best Practice Guidelines in the Analysis of Storage Dry Cask  

SciTech Connect (OSTI)

Computational fluid dynamics (CFD) methods are used to evaluate the thermal performance of a dry cask under long term storage conditions in accordance with NUREG-1536 [NUREG-1536, 1997]. A three-dimensional CFD model was developed and validated using data for a ventilated storage cask (VSC-17) collected by Idaho National Laboratory (INL). The developed Fluent CFD model was validated to minimize the modeling and application uncertainties. To address modeling uncertainties, the paper focused on turbulence modeling of buoyancy driven air flow. Similarly, in the application uncertainties, the pressure boundary conditions used to model the air inlet and outlet vents were investigated and validated. Different turbulence models were used to reduce the modeling uncertainty in the CFD simulation of the air flow through the annular gap between the overpack and the multi-assembly sealed basket (MSB). Among the chosen turbulence models, the validation showed that the low Reynolds k-{epsilon} and the transitional k-{omega} turbulence models predicted the measured temperatures closely. To assess the impact of pressure boundary conditions used at the air inlet and outlet channels on the application uncertainties, a sensitivity analysis of operating density was undertaken. For convergence purposes, all available commercial CFD codes include the operating density in the pressure gradient term of the momentum equation. The validation showed that the correct operating density corresponds to the density evaluated at the air inlet condition of pressure and temperature. Next, the validated CFD method was used to predict the thermal performance of an existing dry cask storage system. The evaluation uses two distinct models: a three-dimensional and an axisymmetrical representation of the cask. In the 3-D model, porous media was used to model only the volume occupied by the rodded region that is surrounded by the BWR channel box. In the axisymmetric model, porous media was used to model the entire region that encompasses the fuel assemblies as well as the gaps in between. Consequently, a larger volume is represented by porous media in the second model; hence, a higher frictional flow resistance is introduced in the momentum equations. The conservatism and the safety margins of these models were compared to assess the applicability and the realism of these two models. The three-dimensional model included fewer geometry simplifications and is recommended as it predicted less conservative fuel cladding temperature values, while still assuring the existence of adequate safety margins. (authors)

Zigh, A.; Solis, J. [US Nuclear Regulatory Commission, Rockville, MD MS (United States)

2008-07-01T23:59:59.000Z

220

Cybersecurity Dynamics Shouhuai Xu  

E-Print Network [OSTI]

Cybersecurity Dynamics Shouhuai Xu Department of Computer Science, University of Texas at San Antonio ABSTRACT We explore the emerging field of Cybersecurity Dynamics, a candidate foundation for the Science of Cybersecurity. Keywords Cybersecurity dynamics, security model, security analysis 1

Xu, Shouhuai

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221

ROTATION OF MERCURY: THEORETICAL ANALYSIS OF THE DYNAMICS OF A RIGID ELLIPSOIDAL PLANET  

E-Print Network [OSTI]

Laboratory ROTATION OF MERCURY: THEDRETICAL ANALYSIS OF THEW -7405-eng-48 ROTATION OF MERCURY: THEORETICAL ANALYSIS OFfor the rotation of Mercury is sho'ln to imply locked-in

Laslett, L. Jackson

2008-01-01T23:59:59.000Z

222

Generalized models as a universal approach to the analysis of nonlinear dynamical systems  

E-Print Network [OSTI]

We present a universal approach to the investigation of the dynamics in generalized models. In these models the processes that are taken into account are not restricted to specific functional forms. Therefore a single generalized models can describe a class of systems which share a similar structure. Despite this generality, the proposed approach allows us to study the dynamical properties of generalized models efficiently in the framework of local bifurcation theory. The approach is based on a normalization procedure that is used to identify natural parameters of the system. The Jacobian in a steady state is then derived as a function of these parameters. The analytical computation of local bifurcations using computer algebra reveals conditions for the local asymptotic stability of steady states and provides certain insights on the global dynamics of the system. The proposed approach yields a close connection between modelling and nonlinear dynamics. We illustrate the investigation of generalized models by considering examples from three different disciplines of science: a socio-economic model of dynastic cycles in china, a model for a coupled laser system and a general ecological food web.

Thilo Gross; Ulrike Feudel

2006-01-29T23:59:59.000Z

223

A New Bifurcation Analysis for Power System Dynamic Voltage Stability Studies  

E-Print Network [OSTI]

a specific system configuration and the operation condition. For a power system, the typical state variables are the time dependent generator voltages (For different generator models, the variables of generator voltages as the variables of the exciter, speed governor and so on; sometimes the dynamics of the load behavior will also

224

Trend Motif: A Graph Mining Approach for Analysis of Dynamic Complex Networks  

SciTech Connect (OSTI)

Complex networks have been used successfully in scientific disciplines ranging from sociology to microbiology to describe systems of interacting units. Until recently, studies of complex networks have mainly focused on their network topology. However, in many real world applications, the edges and vertices have associated attributes that are frequently represented as vertex or edge weights. Furthermore, these weights are often not static, instead changing with time and forming a time series. Hence, to fully understand the dynamics of the complex network, we have to consider both network topology and related time series data. In this work, we propose a motif mining approach to identify trend motifs for such purposes. Simply stated, a trend motif describes a recurring subgraph where each of its vertices or edges displays similar dynamics over a userdefined period. Given this, each trend motif occurrence can help reveal significant events in a complex system; frequent trend motifs may aid in uncovering dynamic rules of change for the system, and the distribution of trend motifs may characterize the global dynamics of the system. Here, we have developed efficient mining algorithms to extract trend motifs. Our experimental validation using three disparate empirical datasets, ranging from the stock market, world trade, to a protein interaction network, has demonstrated the efficiency and effectiveness of our approach.

Jin, R; McCallen, S; Almaas, E

2007-05-28T23:59:59.000Z

225

Analysis of Photoreaction in the Delta Energy Region by the Quantum Molecular Dynamics Approach  

E-Print Network [OSTI]

We study the photoreaction in the delta energy region using the QMD approach. The proton and pion cross-sections are calculated and compared with experimental data. Through this work we examine the multistep contributions in the cross-sections and the {$\\pi - \\Delta$} dynamics.

Tomoyuki Maruyama; Koji Niita; Satoshi Chiba; Toshiki Maruyama; Akira Iwamoto

1997-05-02T23:59:59.000Z

226

A Toolkit for Real-time Analysis of Dynamic Large-Scale Networks  

E-Print Network [OSTI]

contains algorithms to compute metrics of static snapshots of the dynamic graph. I. INTRODUCTION Many that have played on the same team [8], and more abstract things such as functional brain networks where possible to process them in a single machine. Often, the networks are not even stored in a single location

Kuipers, Fernando A.

227

An Efficient Nonlinear Structural Dynamics Solver for Use in Computational Aeroelastic Analysis  

E-Print Network [OSTI]

for several examples. Ultimately, these equations are coupled with a uid dynamics solver to provide a structurally e cient aeroelastic program. v ACKNOWLEDGMENTS I would like to thank my advisor, Dr. Paul Cizmas as well as the members of my committee. I... for their unconditional and unending support. They are the reason for my success. vi TABLE OF CONTENTS Page ABSTRACT : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : iii ACKNOWLEDGMENTS : : : : : : : : : : : : : : : : : : : : : : : : : : : : : v...

Freno, Brian Andrew

2011-08-08T23:59:59.000Z

228

Evaluation of Counter-Based Dynamic Load Balancing Schemes for Massive Contingency Analysis on Over 10,000 Cores  

SciTech Connect (OSTI)

Contingency analysis studies are necessary to assess the impact of possible power system component failures. The results of the contingency analysis are used to ensure the grid reliability, and in power market operation for the feasibility test of market solutions. Currently, these studies are performed in real time based on the current operating conditions of the grid with a set of pre-selected contingency list, which might result in overlooking some critical contingencies caused by variable system status. To have a complete picture of a power grid, more contingencies need to be studied to improve grid reliability. High-performance computing techniques hold the promise of being able to perform the analysis for more contingency cases within a much shorter time frame. This paper evaluates the performance of counter-based dynamic load balancing schemes for a massive contingency analysis program on 10,000+ cores. One million N-2 contingency analysis cases with a Western Electricity Coordinating Council power grid model have been used to demonstrate the performance. The speedup of 3964 with 4096 cores and 7877 with 10240 cores are obtained. This paper reports the performance of the load balancing scheme with a single counter and two counters, describes disk I/O issues, and discusses other potential techniques for further improving the performance.

Chen, Yousu; Huang, Zhenyu; Rice, Mark J.

2012-12-27T23:59:59.000Z

229

theoretical and applied fracture  

E-Print Network [OSTI]

theoretical and applied fracture mechanics ELSEVIER Theoretical and Applied Fracture Mechanics 00 and Applied Fracture Mechanics 00 (1995) 000-000 Recently, some European countries developed defect specific. A suitable probabilistic fracture mechanic

Cizelj, Leon

230

Numerical Analysis of the Internal Kinematics and Dynamics of Three-dimensional Breaking Waves on B. Biausser, S.T. Grilli, P. Frauni  

E-Print Network [OSTI]

Numerical Analysis of the Internal Kinematics and Dynamics of Three-dimensional Breaking Waves/Navier-Stokes solver. Analysis of wave profiles and kinematics (velocity, vorticity, pressure) are carried out. Keyword the breaking and post-breaking in a three- dimensional numerical wave tank of a solitary wave over a sloping

Grilli, Stéphan T.

231

Causality Analysis of Groundwater dynamics based on a Vector Autoregressive model in the semi-arid basin of Gundal (South India)  

E-Print Network [OSTI]

Causality Analysis of Groundwater dynamics based on a Vector Autoregressive model in the semi, time space analysis, causality, VAR model, semi-arid region 1. Introduction Large amounts of water. Abstract: Causal relationships existing between observed levels of groundwater in a semi-arid sub

232

Applied Computer Science  

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

Computing CCS Division Applied Computer Science Applied Computer Science Innovative co-design of applications, algorithms, and architectures in order to enable scientific...

233

Dynamic response analysis of a 900 kW wind turbine subject to ground excitation  

E-Print Network [OSTI]

response analysis of wind turbine towers including soil-were attached to the wind turbine tower at 7 locations alongload demands on the wind turbine tower structure. Additional

Caudillo, Adrian Felix

2012-01-01T23:59:59.000Z

234

18.311 Principles of Applied Mathematics, Spring 2003  

E-Print Network [OSTI]

Introduction to fundamental concepts in "continuous" applied mathematics. Extensive use of demonstrational software. Discussion of computational and modelling issues. Nonlinear dynamical systems; nonlinear waves; diffusion; ...

Rosales, Rodolfo

235

2007-01-0258 Dynamic Load and Stress Analysis of a Crankshaft  

E-Print Network [OSTI]

and was verified by simulation in ADAMS which resulted in the load spectrum applied to crank pin bearing. This load diesel engine with Ricardo type combustion chamber configuration. The crankshaft durability assessment optimization of crankshaft. Guagliano et al. [2] conducted a study on a marine diesel engine crankshaft

Fatemi, Ali

236

Ethanol Distribution, Dispensing, and Use: Analysis of a Portion of the Biomass-to-Biofuels Supply Chain Using System Dynamics  

SciTech Connect (OSTI)

The Energy Independence and Security Act of 2007 targets use of 36 billion gallons of biofuels per year by 2022. Achieving this may require substantial changes to current transportation fuel systems for distribution, dispensing, and use in vehicles. The U.S. Department of Energy and the National Renewable Energy Laboratory designed a system dynamics approach to help focus government action by determining what supply chain changes would have the greatest potential to accelerate biofuels deployment. The National Renewable Energy Laboratory developed the Biomass Scenario Model, a system dynamics model which represents the primary system effects and dependencies in the biomass-to-biofuels supply chain. The model provides a framework for developing scenarios and conducting biofuels policy analysis. This paper focuses on the downstream portion of the supply chain-represented in the distribution logistics, dispensing station, and fuel utilization, and vehicle modules of the Biomass Scenario Model. This model initially focused on ethanol, but has since been expanded to include other biofuels. Some portions of this system are represented dynamically with major interactions and feedbacks, especially those related to a dispensing station owner's decision whether to offer ethanol fuel and a consumer's choice whether to purchase that fuel. Other portions of the system are modeled with little or no dynamics; the vehicle choices of consumers are represented as discrete scenarios. This paper explores conditions needed to sustain an ethanol fuel market and identifies implications of these findings for program and policy goals. A large, economically sustainable ethanol fuel market (or other biofuel market) requires low end-user fuel price relative to gasoline and sufficient producer payment, which are difficult to achieve simultaneously. Other requirements (different for ethanol vs. other biofuel markets) include the need for infrastructure for distribution and dispensing and widespread use of high ethanol blends in flexible-fuel vehicles.

Vimmerstedt, L. J.; Bush, B.; Peterson, S.

2012-05-01T23:59:59.000Z

237

Finite element analysis of the Arquin-designed CMU wall under a dynamic (blast) load.  

SciTech Connect (OSTI)

The Arquin Corporation designed a CMU (concrete masonry unit) wall construction and reinforcement technique that includes steel wire and polymer spacers that is intended to facilitate a faster and stronger wall construction. Since the construction method for an Arquin-designed wall is different from current wall construction practices, finite element computer analyses were performed to estimate the ability of the wall to withstand a hypothetical dynamic load, similar to that of a blast from a nearby explosion. The response of the Arquin wall was compared to the response of an idealized standard masonry wall exposed to the same dynamic load. Results from the simulations show that the Arquin wall deformed less than the idealized standard wall under such loading conditions. As part of a different effort, Sandia National Laboratories also looked at the relative static response of the Arquin wall, results that are summarized in a separate SAND Report.

Lopez, Carlos; Petti, Jason P.

2008-12-01T23:59:59.000Z

238

Dynamical Systems analysis of an interacting dark energy model in the Brane Scenario  

E-Print Network [OSTI]

In this paper, we investigate the background dynamics in brane cosmology when dark energy is coupled to dark matter by a suitable interaction. Here we consider an homogeneous and isotropic Friedmann-Robertson-Walker (FRW) brane model and the evolution equations are reduced to an autonomous system by suitable transformation of variables. The nature of critical points are analyzed by evaluating the eigenvalues of linearized Jacobi matrix. Finally, the classical stability of the model is also studied.

Biswas, Sujay Kr

2015-01-01T23:59:59.000Z

239

Dynamical System Analysis of Modified Chaplygin Gas in Einstein-Aether Gravity  

E-Print Network [OSTI]

In this work we investigate the background dynamics when dark energy is coupled to dark matter with a suitable interaction in the universe described by Einstein-Aether gravity. Dark energy in the form of Modified Chaplygin gas is considered. A suitable interaction between dark energy and dark matter is considered in order to at least alleviate (if not solve) the cosmic coincidence problem. The dynamical system of equations is solved numerically and a stable scaling solution is obtained. A significant attempt towards the solution of the cosmic coincidence problem is taken. The statefinder parameters are also calculated to classify the dark energy models. Graphs and phase diagrams are drawn to study the variations of these parameters. It is also seen that the background dynamics of modified Chaplygin gas in Einstein-Aether gravity is completely consistent with the notion of an accelerated expansion in the late universe. Finally, it has been shown that the universe follows the power law form of expansion around the critical point.

Chayan Ranjit; Prabir Rudra; Sujata Kundu

2014-08-19T23:59:59.000Z

240

UNL Core for Applied Genomics and Ecology  

E-Print Network [OSTI]

UNL Core for Applied Genomics and Ecology Bioinformatics training Roche 454 GS-FLX Registration, Microbiomes, Variant Analysis, Whole Genomes, Transcriptomes Data Analysis and Statistics CAGE database and employer. University of Nebraska-Lincoln*Core for Applied Genomics and Ecology* 323 Filley Hall *Lincoln

Farritor, Shane

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


241

The Development of Dynamic Operational Risk Assessment in Oil/Gas and Chemical Industries  

E-Print Network [OSTI]

of reliability and safety, conventional approaches that are static reveal their weakness in nature when applied to dynamic processes[7, 8]. For instance, fault tree/event tree analysis (FTA/ETA)[9], initially applied in nuclear power plants, collects a set...

Yang, Xiaole

2011-08-08T23:59:59.000Z

242

Commercial Aircraft Corporation of China (Comac) attempts to break the Airbus-Boeing duopoly, will it succeed? : an industry analysis framework applied  

E-Print Network [OSTI]

Using an industry analysis framework, this thesis analyzes whether the recently established Commercial Aircraft Corporation of China (Comac) is likely to break the Boeing-Airbus duopoly in the industry of large commercial ...

Fuentes, Jose L., S.M. Massachusetts Institute of Technology

2011-01-01T23:59:59.000Z

243

Sensitivity analysis of oscillating dynamical systems with applications to the mammalian circadian clock  

E-Print Network [OSTI]

The work presented in this thesis consists of two major parts. In Chapter 2, the theory for sensitivity analysis of oscillatory systems is developed and discussed. Several contributions are made, in particular in the precise ...

Wilkins, Anna Katharina

2008-01-01T23:59:59.000Z

244

Trend dynamics : a method to improve the analysis, dissemination and forecasting of trends on the Internet  

E-Print Network [OSTI]

This thesis provides a new perspective in trend analysis with the acknowledgement of individuals as carriers of trends and susceptible to influence simultaneously by a trend's perceived significance and by external effects ...

Strazza, Ernesto (Strazza Silva)

2014-01-01T23:59:59.000Z

245

Design and Analysis of Stochastic Dynamical Systems with Fokker-Planck Equation  

E-Print Network [OSTI]

Monte-Carlo techniques. Spectral analysis of the discretized Fokker- Planck operator, followed by spurious mode rejection is employed to construct a new semi-analytical algorithm to obtain near real-time approximations of transient FPE response of high...

Kumar, Mrinal

2011-02-22T23:59:59.000Z

246

Wavelet Spectrum Analysis and Ocean Wind Waves  

E-Print Network [OSTI]

Wavelet Spectrum Analysis and Ocean Wind Waves Paul C. Liu Abstract. Wavelet spectrum analysis is applied to a set of measured ocean wind waves data collected during the 1990 SWADE {Surface Wave Dynamics Experi- ment) program. The results reveal significantly new and previously unexplored Insights on wave

247

A dynamic stability analysis of an aircraft passing through the trailing vortices of another aircraft  

E-Print Network [OSTI]

Santo, Jr. , B. S. , United States Air Force Academy Directed by: Dr. Balusu M. Rao A method is developed to predict the changes in the aerodynamic forces and moments on an aircraft as it passes through the trailing vortex system of another aircraft... as the test aircraft. The dynamic response of the test aircraft to an encounter with a trailing vortex system is predicted using a linear and a non-linear set of equations of motion. The calculated aerodynamic forces and moments are treated as forcing...

De Santo, Robert James William

2012-06-07T23:59:59.000Z

248

An Analysis of Residential Energy Intensity in Iran, A System Dynamics Approach  

E-Print Network [OSTI]

Abstract: substantial development of counties needs to use the resources in an efficient way. One indicator that shows the degree of efficient use of energy resources is energy intensity. Statistics show that Iran’s energy intensity was in a bad situation during past years and if this manner of using energy resources continues, it will get worse.In this study a system dynamics approach is used to model changes of energy intensity in residential sector in Iran. By implementation and simulation of this model we found some reasons of this problem in Iran. Then we tried to introduce some policies to make steady improvement in energy intensity in the future. Keywords:

Mohamed M. Jamshidi

249

Economic growth, convergence and the HIV/AIDS epidemic: a cross-country panel data analysis   

E-Print Network [OSTI]

This thesis presents an analysis of the dynamic process of economic growth, national welfare and the HIV/AIDS epidemic. An assessment of the methodological designs of applied growth research is undertaken in order to ...

Smith, Joel Benjamin Edmund

2011-07-05T23:59:59.000Z

250

DYNAMIC ANALYSIS OF THE BULK TRITIUM SHIPPING PACKAGE SUBJECTED TO CLOSURE TORQUES AND SEQUENTIAL IMPACTS  

SciTech Connect (OSTI)

This paper presents a finite-element technique to simulate the structural responses and to evaluate the cumulative damage of a radioactive material packaging requiring bolt closure-tightening torque and subjected to the scenarios of the Hypothetical Accident Conditions (HAC) defined in the Code of Federal Regulations Title 10 part 71 (10CFR71). Existing finite-element methods for modeling closure stresses from bolt pre-load are not readily adaptable to dynamic analyses. The HAC events are required to occur sequentially per 10CFR71 and thus the evaluation of the cumulative damage is desirable. Generally, each HAC event is analyzed separately and the cumulative damage is partially addressed by superposition. This results in relying on additional physical testing to comply with 10CFR71 requirements for assessment of cumulative damage. The proposed technique utilizes the combination of kinematic constraints, rigid-body motions and structural deformations to overcome some of the difficulties encountered in modeling the effect of cumulative damage. This methodology provides improved numerical solutions in compliance with the 10CFR71 requirements for sequential HAC tests. Analyses were performed for the Bulk Tritium Shipping Package (BTSP) designed by Savannah River National Laboratory to demonstrate the applications of the technique. The methodology proposed simulates the closure bolt torque preload followed by the sequential HAC events, the 30-foot drop and the 30-foot dynamic crush. The analytical results will be compared to the package test data.

Wu, T; Paul Blanton, P; Kurt Eberl, K

2007-07-09T23:59:59.000Z

251

An analysis of the strain energy field of a composite coupon in dynamic tensile loading  

E-Print Network [OSTI]

assumption made for coupons was treated by Puppo and Evensen [6] and Pipes and Pagano [7]. The citations of the following pages follow the style of the A. S. M. E. Journal of Applied Mechanics. The derivation of the distortion strain energy and its use... directions of elasticity, leads to definition of these elastic constants in terms of the "engineering constants, " Young's modulus E, the shear modulus G and Poisson's ratio u. By assuming a state of plane stress, c = r = r = 0 , x xz yz the relation...

Albright, Stephen Lee

1974-01-01T23:59:59.000Z

252

Dynamic analysis of shells of revolution submerged in an acoustic medium by the finite element method  

E-Print Network [OSTI]

matrix due to radiated pressure modulus of elasticity linear mid-surface strain for the shell generalized applied load matrix shear modulus generalized radiated pressure matrix assembled equivalent nodal loads due to radiated pressure weight... and the shell material are 0 037 and 0 289 slug per cubic inch, respectively, and the speed of sound in water is taken as 4700 feet per second. This corresponds to a steel shell in sea water. An in ternal pressure of 50 p. s. i. is assumed. The nodal forces...

Ng, Chi Kin

1978-01-01T23:59:59.000Z

253

Computational Fluid Dynamics in Support of the SNS Liquid Mercury Thermal-Hydraulic Analysis  

SciTech Connect (OSTI)

Experimental and computational thermal-hydraulic research is underway to support the liquid mercury target design for the Spallation Neutron Source (SNS) facility. The SNS target will be subjected to internal nuclear heat generation that results from pulsed proton beam collisions with the mercury nuclei. Recirculation and stagnation zones within the target are of particular concern because of the likelihood that they will result in local hot spots and diminished heat removal from the target structure. Computational fluid dynamics (CFD) models are being used as a part of this research. Recent improvements to the 3D target model include the addition of the flow adapter which joins the inlet/outlet coolant pipes to the target body and an updated heat load distribution at the new baseline proton beam power level of 2 MW. Two thermal-hydraulic experiments are planned to validate the CFD model.

Siman-Tov, M.; Wendel, M.W.; Yoder, G.L.

1999-11-14T23:59:59.000Z

254

POSITION OPENING APPLIED STATISTICS  

E-Print Network [OSTI]

: Assistant or Associate Professor of Applied Statistics. Employment Beginning: September 16, 2012 DescriptionPOSITION OPENING APPLIED STATISTICS Department of Decision Sciences Charles H. Lundquist College at the University of Oregon is seeking to fill one tenure-track faculty position in Applied Statistics. Rank

Shepp, Larry

255

Mokken scale analysis of mental health and wellbeing questionnaire item responses: a nonparametric IRT method in empirical research for applied health researchers  

E-Print Network [OSTI]

potentially useful items are rejected because of the shape of their item response functions, with the result that other aspects of scale performance are likely to be compromised to some extent. For ex- ample, reliability estimated from the conforming items may... . No violations of the invariant item ordering requirement are present. We can therefore consider the results of this first ex- emplar Mokken scaling analysis as supportive of a GHQ-12 scale which, within each subscale, satisfies IIO and therefore both subscales...

Stochl, Jan; Jones, Peter B; Croudace, Tim J

2012-06-11T23:59:59.000Z

256

Dynamic analysis of a semi-submersible connected to a tanker  

E-Print Network [OSTI]

frequency oscillation. 2. 16 Reproduction of API RP2P curve . 2. 17 Sedco 711 surge motion for low frequency motion calculations. 2. 18 Sedco 711 surge motion for low frequency motion calculations; details of 20 sec, surrounding extreme. . 2. 19 Curve... institutes (API) "Recommended Practices for The Analysis of Spread Mooring Systems for Floating Drilling Units (RP2P)" [18]. API RP2P contains an upper bound curve for the relationship between spectral significant wave height, mean wave drift force...

Maldonado-Aguirre, Georgina

1993-01-01T23:59:59.000Z

257

Applied quantum mechanics 1 Applied Quantum Mechanics  

E-Print Network [OSTI]

that describe the time-dependent state . If can be expressed as a power series in the perturbing potential of a one dimensional har- monic oscillator. At time t = 0 a perturbation is applied where V0-dimensional rectangular potential well for which in the range and elsewhere. It is decided to control the state

Levi, Anthony F. J.

258

Thermal analysis of adsorptive natural gas storages during dynamic charge phase at room temperature  

SciTech Connect (OSTI)

The thermal behavior of an adsorptive natural gas (ANG) vessel pressurized continuously with light hydrocarbon gases and their mixture at 27 C was analyzed using two different activated carbons. Activated carbon AC-L showed better isothermal storage capacity than AC-D due to its sufficient porous structure. However, higher adsorption capacity claimed more extreme thermal fluctuation represented by a temperature rise of 99.2 C at the center region of the bed charged continuously with methane at 1 L min{sup -1} up to pressure of 4 MPa, corresponding to 82.5 C in AC-D bed. Higher charge rate of 5 L min{sup -1} claimed severer thermal fluctuation of 116 C in AC-L/methane system calling for a serious reduction of 26.9% in the dynamic storage capacity with respect to the isothermal storage capacity. This reduction brought the storage system to a working pressure of about 2.5 MPa rather than the desired working pressure of {proportional_to}4 MPa (about 40% reduction in storage pressure). The severest temperature rise was at the center region caused by bed poor thermal conductivity leading to limited heat transfer. High ethane and propane portions in natural gas may contribute to the thermal fluctuation of the storage system as their heats of adsorption are higher than that for methane. (author)

Ridha, Firas N.; Yunus, Rosli M.; Rashid, Mohd. [Department of Chemical Engineering, University of Technology Malaysia, 81310 UTM, Skudai, Johor (Malaysia); Ismail, Ahmad F. [Department of Gas Engineering, University of Technology Malaysia, 81310 UTM, Skudai, Johor (Malaysia)

2007-10-15T23:59:59.000Z

259

Dynamic simulations of geologic materials using combined FEM/DEM/SPH analysis  

SciTech Connect (OSTI)

An overview of the Lawrence Discrete Element Code (LDEC) is presented, and results from a study investigating the effect of explosive and impact loading on geologic materials using the Livermore Distinct Element Code (LDEC) are detailed. LDEC was initially developed to simulate tunnels and other structures in jointed rock masses using large numbers of polyhedral blocks. Many geophysical applications, such as projectile penetration into rock, concrete targets, and boulder fields, require a combination of continuum and discrete methods in order to predict the formation and interaction of the fragments produced. In an effort to model this class of problems, LDEC now includes implementations of Cosserat point theory and cohesive elements. This approach directly simulates the transition from continuum to discontinuum behavior, thereby allowing for dynamic fracture within a combined finite element/discrete element framework. In addition, there are many application involving geologic materials where fluid-structure interaction is important. To facilitate solution of this class of problems a Smooth Particle Hydrodynamics (SPH) capability has been incorporated into LDEC to simulate fully coupled systems involving geologic materials and a saturating fluid. We will present results from a study of a broad range of geomechanical problems that exercise the various components of LDEC in isolation and in tandem.

Morris, J P; Johnson, S M

2008-03-26T23:59:59.000Z

260

First principles analysis of lattice dynamics for Fe-based superconductors and entropically-stabilized phases  

SciTech Connect (OSTI)

Modern calculations are becoming an essential, complementary tool to inelastic x-ray scattering studies, where x-rays are scattered inelastically to resolve meV phonons. Calculations of the inelastic structure factor for any value of Q assist in both planning the experiment and analyzing the results. Moreover, differences between the measured data and theoretical calculations help identify important new physics driving the properties of novel correlated systems. We have used such calculations to better and more e#14;ciently measure the phonon dispersion and elastic constants of several iron pnictide superconductors. This dissertation describes calculations and measurements at room temperature in the tetragonal phase of CaFe{sub 2}As{sub 2} and LaFeAsO. In both cases, spin-polarized calculations imposing the antiferromagnetic order present in the low-temperature orthorhombic phase dramatically improves the agreement between theory and experiment. This is discussed in terms of the strong antiferromagnetic correlations that are known to persist in the tetragonal phase. In addition, we discuss a relatively new approach called self-consistent ab initio lattice dynamics (SCAILD), which goes beyond the harmonic approximation to include phonon-phonon interactions and produce a temperature-dependent phonon dispersion. We used this technique to study the HCP to BCC transition in beryllium.

Hahn, Steven

2012-07-20T23:59:59.000Z

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


261

Dynamic Faraday cup signal analysis and the measurement of energetic ions emitted by plasma focus  

SciTech Connect (OSTI)

A theoretical model is developed to study the signals from a typical dynamic Faraday cup, and using this model the output signals from this structure are obtained. A detailed discussion on the signal structure, using different experimental conditions, is also given. It is argued that there is a possibility of determining the total charge of the generated ion pulse, the maximum velocity of the ions, ion velocity distribution, and the number of ion species for mixed working gases, under certain conditions. In addition, the number of different ionization stages, the number of different pinches in one shot, and the number of different existing acceleration mechanisms can also be determined provided that the mentioned conditions being satisfied. An experiment is carried out on the Filippov type 90?kJ Sahand plasma focus using Ar as the working gas at the pressure of 0.25?Torr. The data from a typical shot are fitted to a signal from the model and the total charge of the related energetic ion pulse is deduced using the values of the obtained fit parameters. Good agreement between the obtained amount of the total charge and the values obtained during other experiments on the same plasma focus device is observed.

Pestehe, S. J., E-mail: sjpest@tabrizu.ac.ir; Mohammadnejad, M. [Department of Atomic and Molecular Physics, Faculty of Physics, University of Tabriz, Tabriz 5167618949 (Iran, Islamic Republic of) [Department of Atomic and Molecular Physics, Faculty of Physics, University of Tabriz, Tabriz 5167618949 (Iran, Islamic Republic of); Research Institute for Applied Physics and Astronomy, University of Tabriz, Tabriz (Iran, Islamic Republic of); Irani Mobaraki, S. [Department of Atomic and Molecular Physics, Faculty of Physics, University of Tabriz, Tabriz 5167618949 (Iran, Islamic Republic of)] [Department of Atomic and Molecular Physics, Faculty of Physics, University of Tabriz, Tabriz 5167618949 (Iran, Islamic Republic of)

2014-03-15T23:59:59.000Z

262

Dynamical systems probabilistic risk assessment.  

SciTech Connect (OSTI)

Probabilistic Risk Assessment (PRA) is the primary tool used to risk-inform nuclear power regulatory and licensing activities. Risk-informed regulations are intended to reduce inherent conservatism in regulatory metrics (e.g., allowable operating conditions and technical specifications) which are built into the regulatory framework by quantifying both the total risk profile as well as the change in the risk profile caused by an event or action (e.g., in-service inspection procedures or power uprates). Dynamical Systems (DS) analysis has been used to understand unintended time-dependent feedbacks in both industrial and organizational settings. In dynamical systems analysis, feedback loops can be characterized and studied as a function of time to describe the changes to the reliability of plant Structures, Systems and Components (SSCs). While DS has been used in many subject areas, some even within the PRA community, it has not been applied toward creating long-time horizon, dynamic PRAs (with time scales ranging between days and decades depending upon the analysis). Understanding slowly developing dynamic effects, such as wear-out, on SSC reliabilities may be instrumental in ensuring a safely and reliably operating nuclear fleet. Improving the estimation of a plant's continuously changing risk profile will allow for more meaningful risk insights, greater stakeholder confidence in risk insights, and increased operational flexibility.

Denman, Matthew R.; Ames, Arlo Leroy

2014-03-01T23:59:59.000Z

263

Paper No. 2003-JSC-340 Biausser 1 Numerical analysis of the internal kinematics and dynamics of three-dimensional breaking waves on  

E-Print Network [OSTI]

Paper No. 2003-JSC-340 Biausser 1 Numerical analysis of the internal kinematics and dynamics of three-dimensional breaking waves on slopes B. Biausser(1),(3) , S.T. Grilli (2) , R. Marcer (3) , P- dimensional numerical wave tank of a solitary wave over a sloping ridge. The numerical model is based

Grilli, Stéphan T.

264

Integrated Dynamic Analysis of Floating Offshore Wind Turbines Bjrn Skaare*, Tor David Hanson*, Finn Gunnar Nielsen*, Rune Yttervik*, Anders Melchior Hansen**,  

E-Print Network [OSTI]

Integrated Dynamic Analysis of Floating Offshore Wind Turbines Bjørn Skaare*, Tor David Hanson of floating wind turbines exposed to forces from wind, waves and current has been developed for Hydro Oil & Energy's floating wind turbine concept, HYWIND. Two existing, independent, computer program systems

265

A study of localisation in dual phase high-strength steels under dynamic loading using digital image correlation and FE analysis  

E-Print Network [OSTI]

1 A study of localisation in dual phase high-strength steels under dynamic loading using digital of an elasto-viscoplastic constitutive model for the dual-phase steel is provided in terms of its ability for the shell element analysis. Keywords: high-speed photography, localisation, dual-phase high strength-steel

Paris-Sud XI, Université de

266

E-Print Network 3.0 - applying spatial thinking Sample Search...  

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

Summary: on geographic information science, spatial analysis, and accuracy in geographic data. "Spatial thinking applies... Analysis Application Applying Concepts of Spatial...

267

Thioulouse, J., J. Devillers, D. Chessel, and Y. Auda. 1991. Graphical techniques for multidimensional data analysis. Pages 153-205 in J. Devillers and W. Karcher, editors. Applied Multivariate Analysis in SAR and Environmental Studies. Kluwer Academic  

E-Print Network [OSTI]

Analysis in SAR and Environmental Studies. Kluwer Academic Publishers. http://pbil.univ-lyon1.fr/R/articles Analysis in SAR and Environmental Studies. Kluwer Academic Publishers. http://pbil.univ-lyon1.fr/R/articles Analysis in SAR and Environmental Studies. Kluwer Academic Publishers. http://pbil.univ-lyon1.fr/R/articles

Thioulouse, Jean

268

Improved Protein Arrays for Quantitative Systems Analysis of the Dynamics of Signaling Pathway Interactions  

SciTech Connect (OSTI)

Astronauts and workers in nuclear plants who repeatedly exposed to low doses of ionizing radiation (IR, <10 cGy) are likely to incur specific changes in signal transduction and gene expression in various tissues of their body. Remarkable advances in high throughput genomics and proteomics technologies enable researchers to broaden their focus from examining single gene/protein kinetics to better understanding global gene/protein expression profiling and biological pathway analyses, namely Systems Biology. An ultimate goal of systems biology is to develop dynamic mathematical models of interacting biological systems capable of simulating living systems in a computer. This Glue Grant is to complement Dr. Boothman’s existing DOE grant (No. DE-FG02-06ER64186) entitled “The IGF1/IGF-1R-MAPK-Secretory Clusterin (sCLU) Pathway: Mediator of a Low Dose IR-Inducible Bystander Effect” to develop sensitive and quantitative proteomic technology that suitable for low dose radiobiology researches. An improved version of quantitative protein array platform utilizing linear Quantum dot signaling for systematically measuring protein levels and phosphorylation states for systems biology modeling is presented. The signals are amplified by a confocal laser Quantum dot scanner resulting in ~1000-fold more sensitivity than traditional Western blots and show the good linearity that is impossible for the signals of HRP-amplification. Therefore this improved protein array technology is suitable to detect weak responses of low dose radiation. Software is developed to facilitate the quantitative readout of signaling network activities. Kinetics of EGFRvIII mutant signaling was analyzed to quantify cross-talks between EGFR and other signaling pathways.

YANG, CHIN-RANG [NHLBI, NIH] [NHLBI, NIH

2013-12-11T23:59:59.000Z

269

Apply early! Limited enrollment.  

E-Print Network [OSTI]

volcano. Experience the culture and history of Hawaii, and the impact of human activitiesApply early! Limited enrollment. Environmental Science in the Hawaiian Islands Observe, research

270

Applied Computer Science  

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

Science and Innovation Computing CCS Division CCS-7 Applied Computer Science Innovative co-design of applications, algorithms, and architectures in order to enable...

271

Analytical Chemistry Applied Mathematics  

E-Print Network [OSTI]

Analytical Chemistry Applied Mathematics Architectural Engineering Architecture Architecture Electricity Markets Environmental Engineering Food Process Engineering Food Safety & Technology Architecture Information Technology & Management Integrated Building Delivery Landscape Architecture Management

Heller, Barbara

272

How To Apply  

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

CSCEEE undergraduate students are encouraged to apply. Required Materials Current Resume Official University Transcript (with spring courses posted andor a copy of Spring...

273

Applied Geosciences Links  

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

Applied Geosciencs Links USGS Mercury Research Uniteds States Geological Survey (USGS) investigations provide information to guide environmental planning and management. This...

274

Experimental analysis of the vorticity and turbulent flow dynamics of a pitching airfoil at realistic flight (helicopter) conditions  

E-Print Network [OSTI]

was improved understanding of the fundamental vorticity and turbulent flow physics for a dynamically stalling airfoil at realistic helicopter flight conditions. An experimental program was performed on a large-scale (C = 0.45 m) dynamically pitching NACA 0012...

Sahoo, Dipankar

2008-10-10T23:59:59.000Z

275

Dynamics of large-scale solar-wind streams obtained by the double superposed epoch analysis  

E-Print Network [OSTI]

Using the OMNI data for period 1976-2000 we investigate the temporal profiles of 20 plasma and field parameters in the disturbed large-scale types of solar wind (SW): CIR, ICME (both MC and Ejecta) and Sheath as well as the interplanetary shock (IS). To take into account the different durations of SW types, we use the double superposed epoch analysis (DSEA) method: re-scaling the duration of the interval for all types in such a manner that, respectively, beginning and end for all intervals of selected type coincide. As the analyzed SW types can interact with each other and change parameters as a result of such interaction, we investigate separately 8 sequences of SW types: (1) CIR, (2) IS/CIR, (3) Ejecta, (4) Sheath/Ejecta, (5) IS/Sheath/Ejecta, (6) MC, (7) Sheath/MC, and (8) IS/Sheath/MC. The main conclusion is that the behavior of parameters in Sheath and in CIR are very similar both qualitatively and quantitatively. Both the high-speed stream (HSS) and the fast ICME play a role of pistons which push the pl...

Yermolaev, Yu I; Nikolaeva, N S; Yermolaev, M Yu

2015-01-01T23:59:59.000Z

276

Applied knowledge to meet society's needs.  

E-Print Network [OSTI]

Applied knowledge to meet society's needs. Applied Physics covers phenomena ranging from knowledge and hands-on experience in experimental techniques, theoretical analysis, simulation and modelling of radiation. The focus of the research is on energy and health. While the topics addressed ­ covering

Langendoen, Koen

277

Applying Global Optimization in Structural Engineering  

E-Print Network [OSTI]

structure Dynamic loading Challenges "Dwarfing visitors, the 70-foot-tall Corliss steam engine powered steam engine in the world. Of engines like the Corliss, William Dean Howells wrote, 'In these thingsApplying Global Optimization in Structural Engineering Dr. George F. Corliss Electrical

278

Nanoindentation Under Dynamic Conditions  

E-Print Network [OSTI]

............................................................................................ 98  6.3.1  Data Analysis ........................................................................................... 99  6.3.2  Dynamic Compliance ............................................................................. 103  6.3.3  Strain Rates...

Wheeler, Jeffrey M

2009-05-22T23:59:59.000Z

279

AEROSPACE SCIENCES Applied aerodynamics  

E-Print Network [OSTI]

AEROSPACE SCIENCES Applied aerodynamics This year saw significant progress in industry, research labs, and academia in the development of flow-control concepts, novel configuration aerodynamic concepts, and aerodynamic im- provement technologies for enhancing the fuel efficiency and performance

Xu, Kun

280

Engineering and Applied  

E-Print Network [OSTI]

> Computer Science > Electrical, Computer, and Energy Engineering > Mechanical Engineering 11, Computational Science and Engineering, Energy Systems and Environmental Sustainability, Materials ScienceCollege of Engineering and Applied Science Contact Robert H. Davis, Engineering Dean 303

Stowell, Michael

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


281

Dieckmann U & Ferrire R (2004). Adaptive Dynamics and Evolving Biodiversity. In: Evolutionary Conservation Biology, eds. Ferrire R, Dieckmann U & Couvet D, pp. 188224. Cambridge University  

E-Print Network [OSTI]

Dieckmann U & Ferrière R (2004). Adaptive Dynamics and Evolving Biodiversity. In: Evolutionary Conservation Biology, eds. Ferrière R, Dieckmann U & Couvet D, pp. 188­224. Cambridge University Press. c International Institute for Applied Systems Analysis 11 Adaptive Dynamics and Evolving Biodiversity Ulf

Dieckmann, Ulf

282

Analysis and synthesis techniques of nonlinear dynamical systems with applications to diagnostic of controlled thermonuclear fusion reactors.  

E-Print Network [OSTI]

??Nonlinear dynamical systems are of wide interest to engineers, physicists and mathematicians, and this is due to the fact that most of physical systems in… (more)

Pisano, Fabio

2013-01-01T23:59:59.000Z

283

Applying one-dimensional fluid thermal elements into a 3D CLIC accelerating strucutre  

E-Print Network [OSTI]

A finite element modeling method to simplify the analysis of coupled thermal-structural model for the CLIC accelerating structure is presented. In addition, the results of thermal and structural analyses for the accelerating structure are presented. Instead of using a standard 3D computational fluid dynamics (CFD) method for solving problems involving fluid dynamics and heat transfer in 3D environment, one-dimensional fluid thermal elements are used. In one-dimensional flow, the governing equations of fluid dynamics are considerably simplified. Thus, it is expected that the computational time for more complex simulations becomes shorter. The method was first applied to several test models, which demonstrated the suitability of the one-dimensional flow modeling. The results show that one-dimensional fluid flow reduces the computation time considerably allowing the modeling for the future larger assemblies with sufficient accuracy.

Raatikainen, Riku; Österberg, Kenneth; Riddone, Germana; Samoshkin, Alexander; Gudkov, Dmitry

2010-01-01T23:59:59.000Z

284

Conductivity as applied to water analysis  

E-Print Network [OSTI]

for the "Dionio Water Tester11. 1. Detection of condenser leaks. 2. Measurement of the priming of boilers. 3. Estimation of the hardness of water. 6. 4. Softening water. 5. Detection of sewage pollution. 6. Test of sewage effluent. 7. Estimation... of the purity of distilled water. 8. Checking the purity of a water supply. In most cases, conductivity is a very satisfactory means of detecting condenser leaks and may also he used in estimating the extent of the leakage. The conductivity of a sample...

Godfrey, Truman M.

1913-05-15T23:59:59.000Z

285

Tensor analysis applied to symmetrical components  

E-Print Network [OSTI]

+ dbms+ b%g) ? (c e9 +$h~ + k ~b) (&~) qk-4h $q-dk dh- &'j ch- bk b& a'k -&Q bg-~ (7e) provided &8 0 ~ Eaoh tern is understood to be nultiplied by the soalar ks seen, froa what has been stated, in order to find the inverse of a entre it nust...

Iriarte, Modesto

1949-01-01T23:59:59.000Z

286

Neutron activation analysis applied to perspiration electrolytes  

E-Print Network [OSTI]

) Member) (Eieisber) (Hie isbn r ) (Nc, . ib": ) J iniar ! Vl R P 3STR-'. CT Neutron ';ctivatior. Imalysis iipplied to Perspiration Electrolytes. (January 1969) Robert C. N Andrew:, B. S. , Norcester Poly' echnic Institut Directed by: Dr. James B... dlX II1 last Neutron Act ivsticn Cross-Eec!iona - - - 73 J Igf 0F TABL? S TABLE 1 TABLE 2 TABLE 3 TABLE 6! Nuclear Properties of Pertinent Elec!eats - - 6 Sodium Reactions Interfering Reactions - - - - - - ~ - - - - 13 Sodium Concentrations...

McAndrew, Robert Gavin

2012-06-07T23:59:59.000Z

287

Apply for Beamtime  

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

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

288

Seminar N 03301, Dynamically  

E-Print Network [OSTI]

Seminar Nº 03301, Dynamically Reconfigurable Architectures A Mead-&-Conway-like Break ·Ametek ·Applied Dynamics ·Astronautics ·BBN ·CDC ·Convex ·Cray Computer ·Cray Research ·Culler-Harris

Hartenstein, Reiner

289

SUSTAINABILITY WHO CAN APPLY  

E-Print Network [OSTI]

FUNDED BY CALL FOR SUSTAINABILITY RESEARCH STUDENT WHO CAN APPLY Undergraduate and graduate Participate in the Global Change & Sustainability Center's Research Symposium; attend workshops with faculty or publish in the U's student-run sustainability publication to be released in May 2014. Are you conducting

290

Nuclear Dynamics Consequence Analysis (NDCA) for the Disposal of Spent Nuclear Fuel in an Underground Geologic Repository--Volume 2: Methodology and Results  

SciTech Connect (OSTI)

The US Department of Energy Office of Environmental Management's (DOE/EM's) National Spent Nuclear Fuel Program (NSNFP), through a collaboration between Sandia National Laboratories (SNL) and Idaho National Engineering and Environmental Laboratory (INEEL), is conducting a systematic Nuclear Dynamics Consequence Analysis (NDCA) of the disposal of SNFs in an underground geologic repository sited in unsaturated tuff. This analysis is intended to provide interim guidance to the DOE for the management of the SNF while they prepare for final compliance evaluation. This report presents results from a Nuclear Dynamics Consequence Analysis (NDCA) that examined the potential consequences and risks of criticality during the long-term disposal of spent nuclear fuel owned by DOE-EM. This analysis investigated the potential of post-closure criticality, the consequences of a criticality excursion, and the probability frequency for post-closure criticality. The results of the NDCA are intended to provide the DOE-EM with a technical basis for measuring risk which can be used for screening arguments to eliminate post-closure criticality FEPs (features, events and processes) from consideration in the compliance assessment because of either low probability or low consequences. This report is composed of an executive summary (Volume 1), the methodology and results of the NDCA (Volume 2), and the applicable appendices (Volume 3).

Taylor, L.L.; Wilson, J.R.; Sanchez, L.C.; Aguilar, R.; Trellue, H.R.; Cochrane, K.; Rath, J.S.

1998-10-01T23:59:59.000Z

291

Population dynamics and movements of skipjack tuna (Katsuwonus pelamis) in the Maldivian fishery: analysis of tagging data from an  

E-Print Network [OSTI]

Population dynamics and movements of skipjack tuna (Katsuwonus pelamis) in the Maldivian fishery du listao (Katsuwonus pelamis) dans la pêcherie des Maldives : analyse des données de marquage au

Hawai'i at Manoa, University of

292

Stochastic Dynamic Programming and Stochastic Fluid-Flow Models in the Design and Analysis of Web-Server Farms  

E-Print Network [OSTI]

A Web-server farm is a specialized facility designed specifically for housing Web servers catering to one or more Internet facing Web sites. In this dissertation, stochastic dynamic programming technique is used to obtain the optimal admission...

Goel, Piyush

2010-10-12T23:59:59.000Z

293

Trailing Edge Noise Model Applied to Wind Turbine Airfoils  

E-Print Network [OSTI]

flows, as well as the acoustic waves, using Computational Fluid Dynamics have become affordable thanksTrailing Edge Noise Model Applied to Wind Turbine Airfoils Franck Bertagnolio Risø-R-1633(EN) Risø Bertagnolio Title: Trailing Edge Noise Model Applied to Wind Turbine Airfoils Department: Wind Energy

294

HyDIVE (Hydrogen Dynamic Infrastructure and Vehicle Evolution...  

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

HyDIVE (Hydrogen Dynamic Infrastructure and Vehicle Evolution) Model Analysis HyDIVE (Hydrogen Dynamic Infrastructure and Vehicle Evolution) Model Analysis Presentation by NREL's...

295

Symbolic Dynamics in a Matching Labour Market Model  

E-Print Network [OSTI]

In this paper we apply the techniques of symbolic dynamics to the analysis of a labor market which shows large volatility in employment flows. In a recent paper, Bhattacharya and Bunzel \\cite{BB} have found that the discrete time version of the Pissarides-Mortensen matching model can easily lead to chaotic dynamics under standard sets of parameter values. To conclude about the existence of chaotic dynamics in the numerical examples presented in the paper, the Li-Yorke theorem or the Mitra sufficient condition were applied which seems questionable because they may lead to misleading conclusions. Moreover, in a more recent version of the paper, Bhattacharya and Bunzel \\cite{BB1} present new results in which chaos is completely removed from the dynamics of the model. Our paper explores the matching model so interestingly developed by the authors with the following objectives in mind: (i) to show that chaotic dynamics may still be present in the model for standard parameter values; (ii) to clarify some open questions raised by the authors in \\cite{BB}, by providing a rigorous proof of the existence of chaotic dynamics in the model through the computation of topological entropy in a symbolic dynamics setting.

Diana A. Mendes; Vivaldo M. Mendes; J. Sousa Ramos

2006-08-01T23:59:59.000Z

296

Analysis of biomimetics in the application of robotic locomotion with a focus on structures, materials and dynamics  

E-Print Network [OSTI]

Biomimetics is the study and analysis of natural systems to inform engineering design and technology development. Through interdisciplinary research and analysis of natural phenomena, engineers are able to gain valuable ...

Miller, Ari Parsons

2011-01-01T23:59:59.000Z

297

Apply for Beamtime  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAbout theOFFICEAmesApplication Acceleration ontoInstrumentationApply for

298

Applied Science/Techniques  

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

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

299

Dynamical analysis of a weakly coupled nonlinear dielectric waveguide -- surface-plasmon model as a new type of Josephson Junction  

E-Print Network [OSTI]

We propose that a weakly-coupled nonlinear dielectric waveguide -- surface-plasmon system can be formulated as a new type of Josephson junction. Such a system can be realized along a metal - dielectric interface where the dielectric medium hosts a nonlinear waveguide (e.g. fiber) for soliton propagation. We demonstrate that the system is in close analogy to the bosonic Josephson-Junction (BJJ) of atomic condensates at very low temperatures, yet exhibits different dynamical features. In particular, the inherently dynamic coupling parameter between soliton and surface-plasmon generates self-trapped oscillatory states at nonzero fractional populations with zero and $\\pi$ time averaged phase difference. The salient features of the dynamics are presented in the phase space.

Ek?io?lu, Yasa; Güven, Kaan

2011-01-01T23:59:59.000Z

300

Dynamical analysis of a weakly coupled nonlinear dielectric waveguide: Surface-plasmon model as another type of Josephson junction  

SciTech Connect (OSTI)

We propose that a weakly coupled nonlinear dielectric waveguide surface-plasmon system can be formulated as another type of Josephson junction. Such a system can be realized along a metal-dielectric interface where the dielectric medium hosts a nonlinear waveguide (e.g., fiber) for soliton propagation. We demonstrate that the system is in close analogy to the bosonic Josephson junction of atomic condensates at very low temperatures, yet exhibits different dynamical features. In particular, the inherently dynamic coupling parameter between soliton and surface plasmon generates self-trapped oscillatory states at nonzero fractional populations with zero and {pi} time-averaged phase difference. The salient features of the dynamics are presented in the phase space.

Eksioglu, Yasa; Muestecaplioglu, Oezguer E.; Gueven, Kaan [Department of Physics, Koc University, Istanbul (Turkey)

2011-09-15T23:59:59.000Z

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


301

Evaluating the Dynamic Nature of Market Risk Todd Hubbs, Todd H. Kuethe,  

E-Print Network [OSTI]

he states, "Many of the most dramatic price movements in the 140-year history have been associated, and oil price shocks. In addition, over time new farm bills have provisions targeting #12;2 agricultural the Dynamic Nature of Market Risk." Proceedings of the NCCC-134 Conference on Applied Commodity Price Analysis

Tesfatsion, Leigh

302

Risk Metrics for Dynamic Complex Infrastructure Systems such as the Power Transmission Grid  

E-Print Network [OSTI]

Risk Metrics for Dynamic Complex Infrastructure Systems such as the Power Transmission Grid D. E in their probability versus size. This power law behavior suggests that conventional risk analysis does not apply of the power transmission grid. How these metrics change, implying changed risk, with different upgrade

Dobson, Ian

303

Analysis of ISO NE Balancing Requirements: Uncertainty-based Secure Ranges for ISO New England Dynamic Inerchange Adjustments  

SciTech Connect (OSTI)

The document describes detailed uncertainty quantification (UQ) methodology developed by PNNL to estimate secure ranges of potential dynamic intra-hour interchange adjustments in the ISO-NE system and provides description of the dynamic interchange adjustment (DINA) tool developed under the same contract. The overall system ramping up and down capability, spinning reserve requirements, interchange schedules, load variations and uncertainties from various sources that are relevant to the ISO-NE system are incorporated into the methodology and the tool. The DINA tool has been tested by PNNL and ISO-NE staff engineers using ISO-NE data.

Etingov, Pavel V.; Makarov, Yuri V.; Wu, Di; Hou, Zhangshuan; Sun, Yannan; Maslennikov, S.; Luo, X.; Zheng, T.; George, S.; Knowland, T.; Litvinov, E.; Weaver, S.; Sanchez, E.

2013-01-31T23:59:59.000Z

304

E-Print Network 3.0 - applied biological simulations Sample Search...  

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

< 1 2 3 4 5 > >> 1 Dynamics of Disease S. A. Levin, Dept. of Ecology and Evolutionary Biology Summary: in physics, biophysics, mathematics (pure or applied), engineering, and...

305

Hierarchical Network Structure Promotes Dynamical Robustness  

E-Print Network [OSTI]

The analysis of dynamical systems that attempts to model chemical reaction, gene-regulatory, population, and ecosystem networks all rely on models having interacting components. When the details of these interactions are unknown for biological systems of interest, one effective approach is to study the dynamical properties of an ensemble of models determined by evolutionary constraints that may apply to all such systems. One such constraint is that of dynamical robustness. Despite previous investigations, the relationship between dynamical robustness-an important functional characteristic of many biological systems-and network structure is poorly understood. Here we analyze the stability and robustness of a large class of dynamical systems and demonstrate that the most hierarchical network structures, those equivalent to the total ordering, are the most robust. In particular, we determine the probability distribution of robustness over system connectivity and show that robustness is maximized by maximizing the number of links between strongly connected components of the graph representing the underlying system connectivity. We demonstrate that this can be understood in terms of the fact that permutation of strongly connected components is a fundamental symmetry of dynamical robustness, which applies to networks of any number of components and is independent of the distribution from which the strengths of interconnection among components are sampled. The classification of dynamical robustness based upon a purely topological property provides a fundamental organizing principle that can be used in the context of experimental validation to select among models that break or preserve network hierarchy. This result contributes to an explanation for the observation of hierarchical modularity in biological networks at all scales.

Cameron Smith; Raymond S. Puzio; Aviv Bergman

2014-12-01T23:59:59.000Z

306

Applied Statistical Physics Molecular Engineering Conference Puerto Vallarta, Mexico, 24-29 August 2003  

E-Print Network [OSTI]

of the sessions: Complex Fluids: Equilibrium and Dynamics, Nano-biotechnology, Nanoscience, Quantum EngineeringFOREWORD Applied Statistical Physics Molecular Engineering Conference Puerto Vallarta, Mexico, 24, RS, Brazil The Second International Conference on `Applied Statistical Physics: Molecular Engineering

Barbosa, Marcia C. B.

307

i* ,C le"/ ^ /o ^ -g C lS' -e l/ -iLE COPY DYNAMIC ANALYSIS OF THE FLUIDYNE  

E-Print Network [OSTI]

Laboratory Oak Ridge, Tennessee #12;ABSTRACT The dynamio behavior of the liquid-piston Stirling engine tuning line oscillations INTRODUCTION The dynamics of the liquid piston Stirling engine have been before the 18th Intersociety Energy Conversion Engineering Conference IECEC '83 August 21-26, 1983

Oak Ridge National Laboratory

308

APPLIED MATHEMATICS & COMPUTATIONAL SCI. (AS) {AMCS}  

E-Print Network [OSTI]

APPLIED MATHEMATICS & COMPUTATIONAL SCI. (AS) {AMCS} 510. (MATH410) Complex Analysis. 520. (MATH420. (MATH432) Game Theory. 567. (BE 567) Mathematical and Computational Modeling of Biological Systems. (M) Prerequisite(s): BE 324 and BE 350. This is an introductory course in mathematical biology. The emphasis

Carpick, Robert W.

309

School of Applied Technology School of Applied Technology  

E-Print Network [OSTI]

School of Applied Technology School of Applied Technology Daniel F. and Ada L. Rice Campus Illinois Institute of Technology 201 E. Loop Road Wheaton, IL 60187 630.682.6000 www.iit.edu/applied tech/ Dean Technology and Management Programs: Mazin Safar Director, Marketing & Development: Scott Pfeiffer Director

Heller, Barbara

310

School of Applied Technology School of Applied Technology  

E-Print Network [OSTI]

School of Applied Technology School of Applied Technology Daniel F. and Ada L. Rice Campus Illinois Institute of Technology 201 E. Loop Road Wheaton, IL 60187 630.682.6000 www.iit.edu/applied tech/ Dean and Academic Director, Information Technology and Management Programs: C. Robert Carlson Director of Operations

Heller, Barbara

311

Performance of a Short Open-End Squeeze Film Damper With Feed Holes: Experimental Analysis of Dynamic Force Coefficients  

E-Print Network [OSTI]

features affect the SFD forced performance. This thesis presents a comprehensive analysis, experimental and theoretical, of a short (L=25.4 mm) open ends SFD design incorporating three lubricant feed holes (without a circumferential feed groove...

Bradley, Gary Daniel

2013-07-19T23:59:59.000Z

312

Composite resonance: A circuit approach to the waveform distortion dynamics of an HVdc converter  

SciTech Connect (OSTI)

A frequency domain analysis is applied to a controlled HVdc converter interconnecting ac and dc networks. The converter is considered as a three port network, and described using transfer functions. Using ac and dc system frequency dependent impedances an equivalent electrical circuit is constructed. The concept of composite resonance is introduced to emphasize the interaction between the ac and dc systems, and a simplified damping factor derived to predict the dynamics of waveform distortion during transient recovery. The frequency domain analysis is verified by dynamic simulation.

Wood, A.R.; Arrillaga, J. [Univ. of Canterbury, Christchurch (New Zealand)] [Univ. of Canterbury, Christchurch (New Zealand)

1995-10-01T23:59:59.000Z

313

Statistics applied to safeguards  

SciTech Connect (OSTI)

Statistical methods are central to safeguards work. Measurements forming the basis of much materials accountancy are not perfect - ``perfect`` in the sense of being error free. Other sessions in this course address the destructive and nondestructive measurement of nuclear material, together with the inherent limitations in those measurements. The bottom line is that measurement errors are a fact of life and, since we can`t eliminate them, we have to find a rational way to deal with them. Which leads to the world of statistics. Beyond dealing with measurement errors, another area of statistical application involves the sampling of items for verification. Inspectors from the IAEA and domestic regulatory agencies periodically visit operating facilities and make measurements of selected items. By comparing their own measured values to those declared by the facilities, increased confidence is obtained. If verification measurements were not expensive, time consuming, and disruptive to operations, perhaps verification of 100% of the inventories would be desirable. In reality, many constraints lead to inspection of only a portion of those inventories. Drawing inferences about a larger ``population`` of declared items in a facility based on verification information obtained from a sample of those items is a statistical problem. There are few texts on statistics in safeguards. The lengthy exposition ``IAEA Safeguards: Statistical Concepts and Techniques`` and the US NRC book edited by Bowen and Bennet are two good sources of general information. In the next section, the subject of measurement quality is addressed. The third section covers the evaluation of MUFs, and discusses the related subjects of error propagation and sequential analysis. The final section covers verification, inspection sample size calculations, and the D statistic. The text is written at an elementary level, with references to the safeguards literature for more detailed treatment.

Picard, R.R.

1993-05-01T23:59:59.000Z

314

Statistics applied to safeguards  

SciTech Connect (OSTI)

Statistical methods are central to safeguards work. Measurements forming the basis of much materials accountancy are not perfect - perfect'' in the sense of being error free. Other sessions in this course address the destructive and nondestructive measurement of nuclear material, together with the inherent limitations in those measurements. The bottom line is that measurement errors are a fact of life and, since we can't eliminate them, we have to find a rational way to deal with them. Which leads to the world of statistics. Beyond dealing with measurement errors, another area of statistical application involves the sampling of items for verification. Inspectors from the IAEA and domestic regulatory agencies periodically visit operating facilities and make measurements of selected items. By comparing their own measured values to those declared by the facilities, increased confidence is obtained. If verification measurements were not expensive, time consuming, and disruptive to operations, perhaps verification of 100% of the inventories would be desirable. In reality, many constraints lead to inspection of only a portion of those inventories. Drawing inferences about a larger population'' of declared items in a facility based on verification information obtained from a sample of those items is a statistical problem. There are few texts on statistics in safeguards. The lengthy exposition IAEA Safeguards: Statistical Concepts and Techniques'' and the US NRC book edited by Bowen and Bennet are two good sources of general information. In the next section, the subject of measurement quality is addressed. The third section covers the evaluation of MUFs, and discusses the related subjects of error propagation and sequential analysis. The final section covers verification, inspection sample size calculations, and the D statistic. The text is written at an elementary level, with references to the safeguards literature for more detailed treatment.

Picard, R.R.

1993-01-01T23:59:59.000Z

315

Assessment of Global Buckling and Fatigue Life for Steel Catenary RIser by Hull-Riser-Mooring Coupled Dynamic Analysis Program  

E-Print Network [OSTI]

the related techniques, software, rules and regulations. They outlined the analysis flow in which the procedure is initiated by design basis and leads to fatigue analysis of SCR including VIV, VIM and motion fatigue, emphasizing 6 the shell element... compression, downward hang-off heave velocity is the target of measurement. Assuming the length is unit length, the equations for the parameter and the variables are as follows: 29 2 min 2 0net d drag Ter alF m g C D V?? ? ? ? ? ? ? 2 /Terminal d...

Eom, Taesung

2013-08-01T23:59:59.000Z

316

Analysis of testing the single-fluxon dynamics in a long Josephson junction by a dissipative spot  

SciTech Connect (OSTI)

A change of the [ital I]-[ital V] characteristics of a long Josephson junction, operating in the zero-field single-fluxon regime, under the action of a hot spot'' (e.g., created by a focused electron beam) is calculated analytically by means of the perturbation theory, and also investigated numerically. The change of the average voltage at a given value of the bias current is calculated as a function of the hot spot-position. The overlap Josephson junction geometry is considered in detail, while the inline one is briefly discussed. A good accord between analytical and numerical results is found. The results are relevant for the interpretation of the low-temperature scanning electron microscopy experiments on imaging the fluxon dynamic states in a long Josephson junction.

Malomed, B.A. (Dipartimento di Fisica, Universita di Salerno, I-84801 Baronissi (Saudi Arabia) (Italy)); Ustinov, A.V. (Institute for Thin Films and Ion Technology, Research Centre (KFA), D-52425 Juelich (Germany))

1994-05-01T23:59:59.000Z

317

Development of one-dimensional computational fluid dynamics code 'GFLOW' for groundwater flow and contaminant transport analysis  

SciTech Connect (OSTI)

Prediction of groundwater movement and contaminant transport in soil is an important problem in many branches of science and engineering. This includes groundwater hydrology, environmental engineering, soil science, agricultural engineering and also nuclear engineering. Specifically, in nuclear engineering it is applicable in the design of spent fuel storage pools and waste management sites in the nuclear power plants. Ground water modeling involves the simulation of flow and contaminant transport by groundwater flow. In the context of contaminated soil and groundwater system, numerical simulations are typically used to demonstrate compliance with regulatory standard. A one-dimensional Computational Fluid Dynamics code GFLOW had been developed based on the Finite Difference Method for simulating groundwater flow and contaminant transport through saturated and unsaturated soil. The code is validated with the analytical model and the benchmarking cases available in the literature. (authors)

Rahatgaonkar, P. S.; Datta, D.; Malhotra, P. K.; Ghadge, S. G. [Nuclear Power Corporation of India Ltd., R-2, Ent. Block, Nabhikiya Urja Bhavan, Anushakti Nagar, Mumbai - 400 094 (India)

2012-07-01T23:59:59.000Z

318

Exact analysis of particle dynamics in combined field of finite duration laser pulse and static axial magnetic field  

SciTech Connect (OSTI)

Dynamics of a charged particle is studied in the field of a relativistically intense linearly polarized finite duration laser pulse in the presence of a static axial magnetic field. For a finite duration laser pulse whose temporal shape is defined by Gaussian profile, exact analytical expressions are derived for the particle trajectory, momentum, and energy as function of laser phase. From the solutions, it is shown that, unlike for the monochromatic plane wave case, resonant phase locking time between the particle and laser pulse is finite. The net energy transferred to the particle does not increase monotonically but tends to saturate. It is further shown that appropriate tuning of cyclotron frequency of the particle with the characteristic frequency in the pulse spectrum can lead to the generation of accelerated particles with variable energies in MeV-TeV range.

Sagar, Vikram; Sengupta, Sudip; Kaw, Predhiman [Institute for Plasma Research, Bhat, Gandhinagar 382428 (India)

2012-11-15T23:59:59.000Z

319

Analysis of the Reactor Cavity Cooling System for Very High Temperature Gas-cooled Reactors Using Computational Fluid Dynamics Tools  

E-Print Network [OSTI]

the VHTR performance and safety analysis, one-dimensional (1-D) system type codes, like RELAP5 or MELCOR, and multi-dimensional CFD codes can be used. The choice of 1-D over multi-dimensional codes first involves identifying the main phenomena, and from...

Frisani, Angelo

2011-08-08T23:59:59.000Z

320

Dynamic programming applied to maximizing traffic flow in parallel systems  

E-Print Network [OSTI]

Solution of the problem The Triple-Route Model 33 CHAPTER I INTRODUCTION The control of traffic flow and congestion in freeway systems is a matter of increasing importance at a time when it. has become evident that it is impossible to construct... enough urban highway- to satisfy all of the traffic demand. It is necessary to seek ways to make more efficient u. e of existing freeways. Nattleworth (1, 2) and others (3, 4, 5, 6) have discussed various aspects of the control of freeway systems...

Anderson, Gerald Lee

1967-01-01T23:59:59.000Z

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


321

Phase space structures and ionization dynamics of hydrogen atom in elliptically polarized microwaves  

E-Print Network [OSTI]

The multiphoton ionization of hydrogen atoms in a strong elliptically polarized microwave field exhibits complex features that are not observed for ionization in circular and linear polarized fields. Experimental data reveal high sensitivity of ionization dynamics to the small changes of the field polarization. The multidimensional nature of the problem makes widely used diagnostics of dynamics, such as Poincar\\'{e} surfaces of section, impractical. We analyze the phase space dynamics using finite time stability analysis rendered by the fast Lyapunov Indicators technique. The concept of zero--velocity surface is used to initialize the calculations and visualize the dynamics. Our analysis provides stability maps calculated for the initial energy at the maximum and below the saddle of the zero-velocity surface. We estimate qualitatively the dependence of ionization thresholds on the parameters of the applied field, such as polarization and scaled amplitude.

Elena Shchekinova; Cristel Chandre; Turgay Uzer

2006-08-24T23:59:59.000Z

322

Dynamics in shear flow studied by X-ray Photon Correlation Spectroscopy  

E-Print Network [OSTI]

X-ray photon correlation spectroscopy was used to measure the diffusive dynamics of colloidal particles in a shear flow. The results presented here show how the intensity autocorrelation functions measure both the diffusive dynamics of the particles and their flow-induced, convective motion. However, in the limit of low flow/shear rates, it is possible to obtain the diffusive component of the dynamics, which makes the method suitable for the study of the dynamical properties of a large class of complex soft-matter and biological fluids. An important benefit of this experimental strategy over more traditional X-ray methods is the minimization of X-ray induced beam damage. While the method can be applied also for photon correlation spectroscopy in the visible domain, our analysis shows that the experimental conditions under which it is possible to measure the diffusive dynamics are easier to achieve at higher q values (with X-rays).

Sebastian Busch; Torben Haugaard Jensen; Yuriy Chushkin; Andrei Fluerasu

2008-03-19T23:59:59.000Z

323

Romanian sources on applied mechanics  

SciTech Connect (OSTI)

This note provides a list of journals and recent books published in Romania covering topics in applied mechanics, with information on bow to obtain them.

Popescu, M.E. [Civil Engineering Inst., Bucharest (Romania)

1992-06-01T23:59:59.000Z

324

Developing Fully Coupled Dynamical Reactor Core Isolation System Models in RELAP-7 for Extended Station Black-Out Analysis  

SciTech Connect (OSTI)

The reactor core isolation cooling (RCIC) system in a boiling water reactor (BWR) provides makeup water to the reactor vessel for core cooling when the main steam lines are isolated and the normal supply of water to the reactor vessel is lost. It was one of the very few safety systems still available during the Fukushima Daiichi accidents after the tsunamis hit the plants and the system successfully delayed the core meltdown for a few days for unit 2 & 3. Therefore, detailed models for RCIC system components are indispensable to understand extended station black-out accidents (SBO) for BWRs. As part of the effort to develop the new generation reactor system safety analysis code RELAP-7, major components to simulate the RCIC system have been developed. This paper describes the models for those components such as turbine, pump, and wet well. Selected individual component test simulations and a simplified SBO simulation up to but before core damage is presented. The successful implementation of the simplified RCIC and wet well models paves the way to further improve the models for safety analysis by including more detailed physical processes in the near future.

Haihua Zhao; Ling Zou; Hongbin Zhang; David Andrs; Richard Martineau

2014-04-01T23:59:59.000Z

325

Precise ruthenium fission product isotopic analysis using dynamic reaction cell inductively coupled plasma mass spectrometry (DRC-ICP-MS)  

SciTech Connect (OSTI)

99Tc is a subsurface contaminant of interest at numerous federal, industrial, and international facilities. However, as a mono-isotopic fission product, 99Tc lacks the ability to be used as a signature to differentiate between the different waste disposal pathways that could have contributed to subsurface contamination at these facilities. Ruthenium fission-product isotopes are attractive analogues for the characterization of 99Tc sources because of their direct similarity to technetium with regard to subsurface mobility, and their large fission yields and low natural background concentrations. We developed an inductively coupled plasma mass spectrometry (ICP-MS) method capable of measuring ruthenium isotopes in groundwater samples and extracts of vadose zone sediments. Samples were analyzed directly on a Perkin Elmer ELAN DRC II ICP-MS after a single pass through a 1-ml bed volume of Dowex AG 50W-X8 100-200 mesh cation exchange resin. Precise ruthenium isotopic ratio measurements were achieved using a low-flow Meinhard-type nebulizer and long sample acquisition times (150,000 ms). Relative standard deviations of triplicate replicates were maintained at less than 0.5% when the total ruthenium solution concentration was 0.1 ng/ml or higher. Further work was performed to minimize the impact caused by mass interferences using the dynamic reaction cell (DRC) with O2 as the reaction gas. The aqueous concentrations of 96Mo and 96Zr were reduced by more than 99.7% in the reaction cell prior to injection of the sample into the mass analyzer quadrupole. The DRC was used in combination with stable-mass correction to quantitatively analyze samples containing up to 2-orders of magnitude more zirconium and molybdenum than ruthenium. The analytical approach documented herein provides an efficient and cost-effective way to precisely measure ruthenium isotopes and quantitate total ruthenium (natural vs. fission-product) in aqueous matrixes.

Brown, Christopher F.; Dresel, P. Evan; Geiszler, Keith N.; Farmer, Orville T.

2006-05-09T23:59:59.000Z

326

The Foundations of Applied Mathematics  

E-Print Network [OSTI]

The Foundations of Applied Mathematics John Baez Category-Theoretic Foundations of Mathematics Workshop May 5, 2013 #12;We often picture the flow of information about mathematics a bit like this: SCIENCE AND ENGINEERING APPLIED MATHEMATICS PURE MATHEMATICS FOUNDATIONS OF MATHEMATICS #12;Of course

Baez, John

327

Journal of Applied Ecology 2004  

E-Print Network [OSTI]

Journal of Applied Ecology 2004 41, 922­933 © 2004 British Ecological Society Blackwell Publishing that might guide management decisions. We tested whether ideas from landscape ecology (local vs. landscape-scale, Sacramento River, succession, vegetation Journal of Applied Ecology (2004) 41, 922­933 Introduction More than

Holl, Karen

328

Dynamical Properties of Interaction Data  

E-Print Network [OSTI]

Network dynamics are typically presented as a time series of network properties captured at each period. The current approach examines the dynamical properties of transmission via novel measures on an integrated, temporally extended network representation of interaction data across time. Because it encodes time and interactions as network connections, static network measures can be applied to this "temporal web" to reveal features of the dynamics themselves. Here we provide the technical details and apply it to agent-based implementations of the well-known SEIR and SEIS epidemiological models.

Bramson, Aaron

2015-01-01T23:59:59.000Z

329

Performance Analysis between Two Sparsity Constrained MRI Methods: Highly Constrained Backprojection(HYPR) and Compressed Sensing(CS) for Dynamic Imaging  

E-Print Network [OSTI]

One of the most important challenges in dynamic magnetic resonance imaging (MRI) is to achieve high spatial and temporal resolution when it is limited by system performance. It is desirable to acquire data fast enough to capture the dynamics...

Arzouni, Nibal

2012-10-19T23:59:59.000Z

330

Molecular dynamics simulation studies of structural and dynamical properties of rapidly quenched Al  

SciTech Connect (OSTI)

The structural and dynamical properties of rapidly quenched Al are studied by molecular dynamics simulations. The pair-correlation function of high temperature liquid Al agrees well with the experimental results. Different cooling rates are applied with high cooling rates leading to glass formation, while low cooling rates leading to crystallization. The local structures are characterized by Honeycutt–Andersen indices and Voronoi tessellation analysis. The results show that for high cooling rates, the local structures of the liquid and glassy Al are predominated by icosahedral clusters, together with considerable amount of face-centered cubic and hexagonal close packed short-range orders. These short-range order results are further confirmed using the recently developed atomic cluster alignment method. Moreover, the atomic cluster alignment clearly shows the crystal nucleation process in supercooled liquid of Al. Finally, the mean square displacement for the liquid is also analyzed, and the corresponding diffusion coefficient as a function of temperature is calculated.

Shen, B. [Fudan University; Liu, C. Y. [Zhengzhou University; Jia, Y. [Zhengzhou University; Yue, G. Q. [Fudan University; Ke, F. S. [Fudan University; Zhao, H. B. [Fudan University; Chen, L. Y. [Fudan University; Wang, S. Y. [Ames Laboratory; Wang, Cai-Zhuang [Ames Laboratory; Ho, Kai-Ming [Ames Laboratory

2013-06-11T23:59:59.000Z

331

Sustainable FACULTY OF APPLIED SCIENCE  

E-Print Network [OSTI]

Working Together Towards a Sustainable Energy Future FACULTY OF APPLIED SCIENCE Clean Energy aspects of sustainable energy solutions, and is committed to using its extensive expertise to serve, Electrical & Computer, Materials, Mechanical, Mining), the School of Architecture & Landscape Architecture

Michelson, David G.

332

temperature heat pumps applied to  

E-Print Network [OSTI]

Very high- temperature heat pumps applied to energy efficiency in industry Application June 21th 2012 Energy efficiency : A contribution to environmental protection Kyoto Copenhage Emission, plastics Partnership : EDF R&D Bil

Oak Ridge National Laboratory

333

IIT SCHOOL OF APPLIED TECHNOLOGY  

E-Print Network [OSTI]

INDUSTRIAL TECHNOLOGY AND MANAGEMENT IIT SCHOOL OF APPLIED TECHNOLOGY PREPARING SKILLED INDIVIDUALS, INDUSTRIAL FACILITIES, SUPPLY CHAIN MANAGEMENT, SUSTAINABILITY AND MANUFACTURING TECHNOLOGY. #12;BE ONE to assess, implement, and utilize current technologies, and to learn how to manage industrial operations

Heller, Barbara

334

Modeling applied to problem solving  

E-Print Network [OSTI]

We describe a modeling approach to help students learn expert problem solving. Models are used to present and hierarchically organize the syllabus content and apply it to problem solving, but students do not develop and ...

Pawl, Andrew

335

Dynamic stall on wind turbine blades  

SciTech Connect (OSTI)

Dynamic loads must be predicted accurately in order to estimate the fatigue life of wind turbines operating in turbulent environments. Dynamic stall contributes to increased dynamic loads during normal operation of all types of horizontal-axis wind turbine (HAWTs). This report illustrates how dynamic stall varies throughout the blade span of a 10 m HAWT during yawed and unyawed operating conditions. Lift, drag, and pitching moment coefficients during dynamics stall are discussed. Resulting dynamic loads are presented, and the effects of dynamic stall on yaw loads are demonstrated using a yaw loads dynamic analysis (YAWDYN). 12 refs., 22 figs., 1 tab.

Butterfield, C.P.; Simms, D.; Scott, G. [National Renewable Energy Lab., Golden, CO (United States)] [National Renewable Energy Lab., Golden, CO (United States); Hansen, A.C. [Utah Univ., Salt Lake City, UT (United States)] [Utah Univ., Salt Lake City, UT (United States)

1991-12-01T23:59:59.000Z

336

Analysis and control of a nonlinear boiler-turbine unit Wen Tan a,*,1  

E-Print Network [OSTI]

Analysis and control of a nonlinear boiler-turbine unit Wen Tan a,*,1 , Horacio J. Marquez b, and the concept is applied to a boiler-turbine unit to analyze its dynamics. It is shown that the unit shows. Keywords: Boiler-turbine unit; Nonlinearity measure; Gap metric; Anti-windup bumpless transfer techniques

Marquez, Horacio J.

337

Optimization of naïve dynamic binary instrumentation Tools/  

E-Print Network [OSTI]

The proliferation of dynamic program analysis tools has done much to ease the burden of developing complex software. However, creating such tools remains a challenge. Dynamic binary instrumentation frameworks such as ...

Kleckner, Reid (Reid N.)

2011-01-01T23:59:59.000Z

338

University of California, Santa Cruz, Applied Optics Grouphttp://photon.soe.ucsc.edu Nanoscale Optofluidics for  

E-Print Network [OSTI]

University of California, Santa Cruz, Applied Optics Grouphttp://photon.soe.ucsc.edu Nanoscale;University of California, Santa Cruz, Applied Optics Grouphttp://photon.soe.ucsc.edu Background Microfluidics Single molecule analysis Integrated optics Singleparticle Optofluidics Optofluidics: combination

Lee, Herbie

339

Systematic Multimodeling Methodology Applied to an Activated Sludge Reactor Anca Maria Nagy,*,  

E-Print Network [OSTI]

Systematic Multimodeling Methodology Applied to an Activated Sludge Reactor Model Anca Maria Nagy for analysis or control purpose. This method is applied to an activated sludge reactor model. Introduction

Paris-Sud XI, Université de

340

Technical Letter Report - Analysis of Ultrasonic Data on Piping Cracks at Ignalina Nuclear Power Plant Before and After Applying a Mechanical Stress Improvement Process, JCN-N6319, Task 2  

SciTech Connect (OSTI)

Pacific Northwest National Laboratory (PNNL) is assisting the United States Nuclear Regulatory Commission (NRC) in developing a position on the management of primary water stress corrosion cracking (PWSCC) in piping systems previously analyzed for leak-before-break (LBB). Part of this work involves determining whether inspections alone are sufficient or if inspections plus mitigation techniques are needed. The work described in this report addresses the reliability of ultrasonic phased-array (PA) examinations for inspection of cracks that have been subjected to the mitigation method of mechanical stress improvement process (MSIP). It is believed that stresses imparted during MSIP may make ultrasonic crack responses in piping welds more difficult to detect and accurately characterize. To explore this issue, data were acquired, both before and after applying MSIP, and analyzed from cracked areas in piping at the Ignalina Nuclear Power Plant (INPP) in Lithuania. This work was performed under NRC Project JCN-N6319, PWSCC in Leak-Before-Break Systems.

Anderson, Michael T.; Cumblidge, Stephen E.; Crawford, Susan L.

2008-02-26T23:59:59.000Z

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


341

TILLMPAD NUMERISK STRMNINGSMEKANIK MVK150 Applied Computational Fluid Mechanics (CFD), basic course  

E-Print Network [OSTI]

TILLÃ?MPAD NUMERISK STRÃ?MNINGSMEKANIK MVK150 Applied Computational Fluid Mechanics (CFD), basic.D.; Computational Fluid Dynamics, The basics with applications, McGraw-Hill, 1995. #12;

342

Endogenous and exogenous dynamics of pressure fluctuations in an impinging entrained-flow gasifier  

E-Print Network [OSTI]

On a laboratory-scale testing platform of impinging entrained-flow gasifier with two opposed burners, the pressure fluctuation signals were measured with a stainless steel water-cooled probe. Phenomenological investigations of the endogenous and exogenous dynamics in the fluctuations of pressure were carried out by performing the mean-variance analysis and separating the endogenous and exogenous components of the signals. Non-universal dynamics with power-law behaviors have been found not only in the original signals but also in their components. A new inequality was obtained showing that the exogenous exponent is smallest while the overall dynamic exponent is the largest. The results highlight that the dynamics of pressure fluctuations in the first fifteen minutes of the gasification process is driven dominantly by the ignition process. The method can be readily applied to the other multiphase systems like bubble column, fluidized bed, etc.

Niu, Miao-Ren; Zhou, Wei-Xing; Wang, Fu-Chen; Yu, Zun-Hong

2007-01-01T23:59:59.000Z

343

Dynamic Structured Partitioning for Parallel Scientific Applications with Pointwise Varying Workloads  

E-Print Network [OSTI]

Dynamic Structured Partitioning for Parallel Scientific Applications with Pointwise Varying", a dynamic structured partition- ing strategy that has been applied to parallel uniform and adaptive and overall application performance. Keywords: Dynamic load balancing, structured grids, pointwise processes

Daniels, Jeffrey J.

344

apply skills & experience build skills  

E-Print Network [OSTI]

senior apply skills & experience junior build skills sophomore research & execute freshman explore options1 2 3 4 s u p p o r t4-year career action plan parent about the center for career development Remind your student that it is never too soon or too late to seek an internship or summer job. build

Alvarez, Pedro J.

345

APPLIED MATHEMATICS AND SCIENTIFIC COMPUTING  

E-Print Network [OSTI]

APPLIED MATHEMATICS AND SCIENTIFIC COMPUTING Brijuni, Croatia June 23{27, 2003. y x Runge's example; Organized by: Department of Mathematics, Unversity of Zagreb, Croatia. Miljenko Maru#20;si#19;c, chairman;simir Veseli#19;c Andro Mikeli#19;c Sponsors: Ministry of Science and Technology, Croatia, CV Sistemi d

Rogina, Mladen

346

California Energy Commission Apply Today!  

E-Print Network [OSTI]

of Flyer Public Programs Office (916) 654-4147 pubprog@energy.state.ca.us June 2006 #12;DON'T MISS electricity usage by about 30 percent. Electricity Savings: 2,262,207 kWh Demand Savings: 575 kW EnergyCalifornia Energy Commission Apply Today! "The college is using cutting edge on- site generation

347

APPLIED THERMAL ENGINEERING Manuscript Draft  

E-Print Network [OSTI]

the heat pump from the grid during the two hours of electrical peak power · Design of a new heat exchangerAPPLIED THERMAL ENGINEERING Manuscript Draft TITLE: Experimental assessment of a PCM to air heat This paper presents a heat exchanger prototype containing PCM material designed to provide a 1kW heating

Paris-Sud XI, Université de

348

Journal of Applied Ecology 2004  

E-Print Network [OSTI]

herbivores provide goods and income to rural communities, have major impacts on land use and habitats-Bianchet REVIEW The management of wild large herbivores to meet economic, conservation and environmental is applied to their management across the globe. To be effective, however, management has to be science

Festa-Bianchet, Marco

349

Journal of Applied Ecology 2006  

E-Print Network [OSTI]

Journal of Applied Ecology 2006 43, 377­384 © 2006 The Authors. Journal compilation © 2006 British Ecological Society Blackwell Publishing Ltd METHODOLOGICAL INSIGHTS Point transect sampling with traps, Etive House, Beechwood Park, Inverness IV2 3BW, UK Summary 1. The ability to monitor abundance of animal

Thomas, Len

350

Applied Sustainability Political Science 319  

E-Print Network [OSTI]

1 Applied Sustainability Political Science 319 College of Charleston Spring 2013 Day/Time: TH 1 Address: fisherb@cofc.edu Office: 284 King Street, #206 (Office of Sustainability) Office Hours: by appt sustainability. It will focus on the development of semester-long sustainability projects, from conception

Young, Paul Thomas

351

Final technical report [ACCELERATED MOLECULAR DYNAMICS SIMULATIONS OF REACTIVE HYDROCARBON SYSTEMS  

SciTech Connect (OSTI)

The research activities in this project consisted of four different sub-projects. Three different accelerated dynamics techniques (parallel replica dynamics, hyperdynamics, and temperature-accelerated dynamics) were applied to the modeling of pyrolysis of hydrocarbons. In addition, parallel replica dynamics was applied to modeling of polymerization.

Stuart, Steven J.

2014-02-25T23:59:59.000Z

352

SIAM conference on applications of dynamical systems  

SciTech Connect (OSTI)

A conference (Oct.15--19, 1992, Snowbird, Utah; sponsored by SIAM (Society for Industrial and Applied Mathematics) Activity Group on Dynamical Systems) was held that highlighted recent developments in applied dynamical systems. The main lectures and minisymposia covered theory about chaotic motion, applications in high energy physics and heart fibrillations, turbulent motion, Henon map and attractor, integrable problems in classical physics, pattern formation in chemical reactions, etc. The conference fostered an exchange between mathematicians working on theoretical issues of modern dynamical systems and applied scientists. This two-part document contains abstracts, conference program, and an author index.

Not Available

1992-01-01T23:59:59.000Z

353

Analysis of the approximations applied in the continuum-distorted-wave-eikonal-initial-state theory for the evaluation of ionization cross sections: Post-prior discrepancy, axial symmetry, and ion-ion interaction  

SciTech Connect (OSTI)

When the continuum distorted wave with eikonal initial state (CDW-EIS) [D. S. Crothers and J. F. McCann, J. Phys B 16, 3229 (1983)] theory is applied to the evaluation of ionization cross sections, many additional approximations are assumed. However, usually, the influence of these approximations is not clear. Aiming to estimate them, we compare the differential and total cross sections obtained with diverse approximations for ionization of He atoms by proton impact. We analyze the post-prior discrepancy, which depends on the perturbative Hamiltonian applied in the scattering amplitude. We study the dependence of the cross sections on the description of the initial and final states. For this purpose, we use the 1Z and 5Z variational and numerical Optimized Potential Model (OPM) [J. D. Talman, Comput. Phys. Commun. 54, 85 (1989)] bound states for the initial target state, and for the final target state we set Coulomb waves with proper effective charges or the continuum state of an OPM potential model. The cross sections resulting from OPM post and prior versions are identical and show excellent agreement with experimental data in each case. Nevertheless, the cross section derived by the prior CDW-EIS, 5Z initial wave, and corresponding continuum state gives comparable results, requiring shorter computational work. Then we study the determination of the impact parameter ionization probability from the transition amplitudes, also including an axial symmetry for the ionization process. The hypothesis of this axial symmetry saves an angular integration in the evaluation of the probabilities. We analyze the variation of these probabilities within the post and prior formalisms and mention initial and final states, according to the supposed symmetry. We found that the probabilities derived with the axial symmetry concentrate at a lower impact parameter than the usual ones and are quite sensitive to the approximations used for the CDW-EIS evaluation. Furthermore, these probabilities underestimate distant collisions. In the last section we introduce the projectile-residual ion potential, and we discuss the effect of the diverse approximations on the dependence of the cross section as a function of the projectile scattering angle. We compare the projectile angular distribution resulting from a full Coulomb interaction between the ions with the one obtained by a screened potential, but in the latter case the theoretical distributions underestimate the experimental data. The OPM and 5Z functions give a good description of the experimental data.

Lopez, S. D.; Garibotti, C. R. [CONICET and Centro Atomico Bariloche, 8400 S.C. de Bariloche (Argentina); Fiori, M. [Departamento de Fisica, Universidad Nacional de Salta, 4400 Salta (Argentina)

2011-03-15T23:59:59.000Z

354

KNOWLEDGE: Building, Securing, Sharing & Applying  

E-Print Network [OSTI]

is to educate and provide powerful analytical tools for information sharing, collaboration & decision support against threats to cyber infrastructure and data Data management in emergency situations Risk analysis for challenging problems in data analysis that address present and emerging homeland security threats Our Mission

355

The effect of cyclic and dynamic loads on carbon steel pipe  

SciTech Connect (OSTI)

This report presents the results of four 152-mm (6-inch) diameter, unpressurized, circumferential through-wall-cracked, dynamic pipe experiments fabricated from STS410 carbon steel pipe manufactured in Japan. For three of these experiments, the through-wall crack was in the base metal. The displacement histories applied to these experiments were a quasi-static monotonic, dynamic monotonic, and dynamic, cyclic (R = {minus}1) history. The through-wall crack for the third experiment was in a tungsten-inert-gas weld, fabricated in Japan, joining two lengths of STS410 pipe. The displacement history for this experiment was the same history applied to the dynamic, cyclic base metal experiment. The test temperature for each experiment was 300 C (572 F). The objective of these experiments was to compare a Japanese carbon steel pipe material with US pipe material, to ascertain whether this Japanese steel was as sensitive to dynamic and cyclic effects as US carbon steel pipe. In support of these pipe experiments, quasi-static and dynamic, tensile and fracture toughness tests were conducted. An analysis effort was performed that involved comparing experimental crack initiation and maximum moments with predictions based on available fracture prediction models, and calculating J-R curves for the pipe experiments using the {eta}-factor method.

Rudland, D.L.; Scott, P.M.; Wilkowski, G.M. [Battelle, Columbus, OH (United States)

1996-02-01T23:59:59.000Z

356

Field-driven Polarization and Domain Dynamics of Ferroelectric...  

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

leads to an exciting variety of structural and dynamic effects in applied electric fields. The richness of these phenomena arises in part from the interaction between...

357

Spectral Analysis of Dynamical Systems  

E-Print Network [OSTI]

Solvay Institutes for Physics and Chemistry, Brussels, and I would like to express my deep gratitude

Bandtlow, Oscar

358

IMPACT OF DYNAMIC VOLTAGE SCALING (DVS) ON CIRCUIT OPTIMIZATION  

E-Print Network [OSTI]

Circuit designers perform optimization procedures targeting speed and power during the design of a circuit. Gate sizing can be applied to optimize for speed, while Dual-VT and Dynamic Voltage Scaling (DVS) can be applied to optimize for leakage...

Esquit Hernandez, Carlos A.

2010-01-16T23:59:59.000Z

359

Cluster Dynamics of Planetary Waves  

E-Print Network [OSTI]

The dynamics of nonlinear atmospheric planetary waves is determined by a small number of independent wave clusters consisting of a few connected resonant triads. We classified the different types of connections between neighboring triads that determine the general dynamics of a cluster. Each connection type corresponds to substantially different scenarios of energy flux among the modes. The general approach can be applied directly to various mesoscopic systems with 3-mode interactions, encountered in hydrodynamics, astronomy, plasma physics, chemistry, medicine, etc.

Elena Kartashova; Victor S. L'vov

2008-11-05T23:59:59.000Z

360

Human Factors design and evaluation criteria applied to academic and instructional websites.  

E-Print Network [OSTI]

??This culminating project applies Human Factors principles to the analysis of various web designs. This culminating project consists of three major parts. The first chapter… (more)

Mendez, Veronica

2015-01-01T23:59:59.000Z

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


361

Nonlinear analysis of time series of vibration data from a friction brake: SSA, PCA, and MFDFA  

E-Print Network [OSTI]

We use the methodology of singular spectrum analysis (SSA), principal component analysis (PCA), and multi-fractal detrended fluctuation analysis (MFDFA), for investigating characteristics of vibration time series data from a friction brake. SSA and PCA are used to study the long time-scale characteristics of the time series. MFDFA is applied for investigating all time scales up to the smallest recorded one. It turns out that the majority of the long time-scale dynamics, that is presumably dominated by the structural dynamics of the brake system, is dominated by very few active dimensions only and can well be understood in terms of low dimensional chaotic attractors. The multi-fractal analysis shows that the fast dynamical processes originating in the friction interface are in turn truly multi-scale in nature.

Nikolay K. Vitanov; Norbert P. Hoffmann; Boris Wernitz

2014-10-23T23:59:59.000Z

362

Improving the probability of effective organizational change in the Coast Guard through the combined use of System Dynamics and Enterprise Value Stream Mapping & Analysis  

E-Print Network [OSTI]

Most major organizational changes never reap the benefits the original planners envisioned, they often take longer to implement than expected and in a dynamic environment that can spell disaster for a large enterprise. The ...

Johnston, Michael J., S.M. Massachusetts Institute of Technology

2008-01-01T23:59:59.000Z

363

Simulation studies of slow dynamics of hydration water in lysozyme : hydration level dependence and comparison with experiment using new time domain analysis  

E-Print Network [OSTI]

A series of Molecular Dynamics (MD) simulations using the GROMACS® package has been performed in this thesis. It is used to mimic and simulate the hydration water in Lysozyme with three different hydration levels (h = 0.3, ...

Kim, Chansoo, S.M. Massachusetts Institute of Technology

2008-01-01T23:59:59.000Z

364

TIGER: A data analysis pipeline for testing the strong-field dynamics of general relativity with gravitational wave signals from coalescing compact binaries  

E-Print Network [OSTI]

The direct detection of gravitational waves with upcoming second-generation gravitational wave observatories such as Advanced LIGO and Advanced Virgo will allow us to probe the genuinely strong-field dynamics of general ...

Agathos, M.

365

47th AIAA Structures, Structural Dynamics and Materials Conference, May 1-4, 2006 Newport, Rhode Island Comparative Analysis of Computational Methods for  

E-Print Network [OSTI]

in turbomachinery, helicopter blades in forward flight, wind turbines, flapping flight, flow control using synthetic47th AIAA Structures, Structural Dynamics and Materials Conference, May 1-4, 2006 Newport, Rhode

Jameson, Antony

366

Why do mixed quantum-classical methods describe short-time dynamics through conical intersections so well? Analysis of geometric phase effects  

E-Print Network [OSTI]

Adequate simulation of non-adiabatic dynamics through conical intersection requires account for a non-trivial geometric phase (GP) emerging in electronic and nuclear wave-functions in the adiabatic representation. Popular mixed quantum-classical (MQC) methods, surface hopping and Ehrenfest, do not carry a nuclear wave-function to be able to incorporate the GP into nuclear dynamics. Surprisingly, the MQC methods reproduce ultra-fast interstate crossing dynamics generated with the exact quantum propagation so well as if they contained information about the GP. Using two-dimensional linear vibronic coupling models we unravel how the MQC methods can effectively mimic the most significant dynamical GP effects: 1) compensation for repulsive diagonal second order non-adiabatic couplings and 2) transfer enhancement for a fully cylindrically symmetric component of a nuclear distribution.

Gherib, Rami; Izmaylov, Artur F

2015-01-01T23:59:59.000Z

367

Non Linear Beam Dynamics Studies at SPEAR  

SciTech Connect (OSTI)

The frequency map analysis of a Hamiltonian system recently introduced to accelerators physics in combination with turn-by-turn phase space measurements opens new experimental opportunities for studying non linear dynamic in storage rings. In this paper we report on the experimental program at SPEAR having the goal of measuring the frequency map of the machine. In this paper we discuss the accuracy of the instantaneous tune extraction from experimental data and demonstrate the possibility of the frequency map measurement. The instantaneous tune extraction technique can be applied to experimental tracking data with reasonable accuracy. Frequency map can be experimentally determined using the existing turn-by-turn phase space measurement techniques and NAFF instantaneous tune extraction.

Terebilo, A.; Pellegrini, C.; /UCLA; Cornacchia, M.; Corbett, J.; Martin, D.; /SLAC

2011-09-12T23:59:59.000Z

368

Applying to Teacher Education Program at Purdue  

E-Print Network [OSTI]

Apply to the Teacher Education Program (TEP). Please remember to apply to the TEP(Gate A) if you wish to officially enroll in the. Professional Education ...

David Drasin

2012-12-02T23:59:59.000Z

369

FY 1990 Applied Sciences Branch annual report  

SciTech Connect (OSTI)

The Applied Sciences Branch actively supports the advancement of DOE/SERI goals for the development and implementation of the solar photovoltaic technology. The primary focus of the laboratories is to provide state-of-the-art analytical capabilities for materials and device characterization and fabrication. The branch houses a comprehensive facility which is capable of providing information on the full range of photovoltaic components. A major objective of the branch is to aggressively pursue collaborative research with other government laboratories, universities, and industrial firms for the advancement of photovoltaic technologies. Members of the branch disseminate research findings to the technical community in publications and presentations. This report contains information on surface and interface analysis, materials characterization, development, electro-optical characterization module testing and performance, surface interactions and FTIR spectroscopy.

Keyes, B.M.; Dippo, P.C. [eds.

1991-11-01T23:59:59.000Z

370

Substructured multibody molecular dynamics.  

SciTech Connect (OSTI)

We have enhanced our parallel molecular dynamics (MD) simulation software LAMMPS (Large-scale Atomic/Molecular Massively Parallel Simulator, lammps.sandia.gov) to include many new features for accelerated simulation including articulated rigid body dynamics via coupling to the Rensselaer Polytechnic Institute code POEMS (Parallelizable Open-source Efficient Multibody Software). We use new features of the LAMMPS software package to investigate rhodopsin photoisomerization, and water model surface tension and capillary waves at the vapor-liquid interface. Finally, we motivate the recipes of MD for practitioners and researchers in numerical analysis and computational mechanics.

Grest, Gary Stephen; Stevens, Mark Jackson; Plimpton, Steven James; Woolf, Thomas B. (Johns Hopkins University, Baltimore, MD); Lehoucq, Richard B.; Crozier, Paul Stewart; Ismail, Ahmed E.; Mukherjee, Rudranarayan M. (Rensselaer Polytechnic Institute, Troy, NY); Draganescu, Andrei I.

2006-11-01T23:59:59.000Z

371

Separation of Stochastic and Deterministic Information from Seismological Time Series with Nonlinear Dynamics and Maximum Entropy Methods  

SciTech Connect (OSTI)

We present a procedure developed to detect stochastic and deterministic information contained in empirical time series, useful to characterize and make models of different aspects of complex phenomena represented by such data. This procedure is applied to a seismological time series to obtain new information to study and understand geological phenomena. We use concepts and methods from nonlinear dynamics and maximum entropy. The mentioned method allows an optimal analysis of the available information.

Gutierrez, Rafael M.; Useche, Gina M.; Buitrago, Elias [Centro de Investigaciones, Universidad Antonio Narino, Carrera 3 Este No. 47A--15 Bogota (Colombia)

2007-11-13T23:59:59.000Z

372

Biosystem Dynamics & Design | EMSL  

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

Biosystem Dynamics & Design Overview Atmospheric Aerosol Systems Biosystem Dynamics & Design Energy Materials & Processes Terrestrial & Subsurface Ecosystems Biosystem Dynamics &...

373

The study of seasonal composition and dynamics of wetland ecosystems and wintering bird habitat at Poyang Lake, PR China using object-based image analysis and field observations  

E-Print Network [OSTI]

index or geospatial metric, and pilot analysis showed that ageospatial data, DCTs may serve as a first step in “top-down” analysesGeospatial Innovation Facility, University of California Berkeley for the remote sensing data analysis.

Dronova, Iryna

2012-01-01T23:59:59.000Z

374

Loads Analysis of Several Offshore Floating Wind Turbine Concepts  

SciTech Connect (OSTI)

This paper presents a comprehensive dynamic-response analysis of six offshore floating wind turbine concepts.

Robertson, A. N.; Jonkman, J. M.

2011-10-01T23:59:59.000Z

375

Application for SAS Certificate Applied Statistics and SAS Programming  

E-Print Network [OSTI]

# ________________________________________ BYU ID ________________________________________ ________________________________________ Year Name Year/Term Taken Grade Stat 124 1.5 SAS Base Programming Skills Stat 224 1.5 Applied SAS Programming Stat 230 3.0 Analysis of Variance Stat 330 3.0 Introduction to Regression Stat 424 3.0 Statistical

Dahl, David B.

376

Bulk Power System Dynamics and Control V, August 26-31, 2001, Onomichi, Japan Strong Resonance Effects in Normal Form Analysis  

E-Print Network [OSTI]

Bulk Power System Dynamics and Control V, August 26-31, 2001, Onomichi, Japan Strong Resonance Engineering Department University of Wisconsin, Madison, WI 53706 USA dobson@engr.wisc.edu Abstract: Power resonance occurring in the power system linearization. Moreover, the changes in the coefficients when

377

A study of localisation in dual phase high-strength steels under dynamic loading using digital image correlation and FE analysis  

E-Print Network [OSTI]

1 A study of localisation in dual phase high-strength steels under dynamic loading using digital conducted on dual-phase high-strength steel in a split-Hopkinson tension bar at a strain-rate in the range-speed photography, localisation, dual-phase high strength-steel, split- Hopkinson bar, photomechanics, elasto

378

Prescission neutron multiplicity and fission probability from Langevin dynamics of nuclear fission  

E-Print Network [OSTI]

A theoretical model of one-body nuclear friction which was developed earlier, namely the chaos-weighted wall formula, is applied to a dynamical description of compound nuclear decay in the framework of the Langevin equation coupled with statistical evaporation of light particles and photons. We have used both the usual wall formula friction and its chaos-weighted version in the Langevin equation to calculate the fission probability and prescission neutron multiplicity for the compound nuclei $^{178}$W, $^{188}$Pt, $^{200}$Pb, $^{213}$Fr, $^{224}$Th, and $^{251}$Es. We have also obtained the contributions of the presaddle and postsaddle neutrons to the total prescission multiplicity. A detailed analysis of our results leads us to conclude that the chaos-weighted wall formula friction can adequately describe the fission dynamics in the presaddle region. This friction, however, turns out to be too weak to describe the postsaddle dynamics properly. This points to the need for a suitable explanation for the enhanc...

Chaudhuri, G; Chaudhuri, Gargi; Pal, Santanu

2002-01-01T23:59:59.000Z

379

E-Print Network 3.0 - anisotropic dynamic clustering Sample Search...  

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

editor) Spatial analysis of dynamic movements of V... Velo'v Dynamic network Spatial data. 1 Introduction Community shared bicycle programs have been... , such...

380

Fluid Limits Applied to Peer to Peer Network Analysis  

E-Print Network [OSTI]

´ublica Montevideo, Uruguay aspirot@fing.edu.uy Ernesto Mordecki Universidad de la Rep´ublica Montevideo, Uruguay

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


381

B. F. Skinner's contributions to applied behavior analysis  

E-Print Network [OSTI]

profoundly affected society through their philosophical implications, though they have made little difference to the contents of one's house or how one does things. Dalton's Atomic Theory and Faraday's Electromagnetism had lit tle influence on the nineteenth...

Morris, Edward K.; Smith, Nathaniel G.; Altus, Deborah E.

2005-01-01T23:59:59.000Z

382

analysis tool applied: Topics by E-print Network  

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

CiteSeer Summary: by Edmund V. Aversenti, General Magnaplate Designers tasked with tooling up for new composite parts must consider multiple factors before specifying a...

383

applied behavior analysis: Topics by E-print Network  

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

and physiological effects of genetic mutations, drug action monitoring of rodent behavior in a home cage environment, either in a daylight condition (light-cycle) using Motai,...

384

applied sensitivity analysis: Topics by E-print Network  

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

in this paper attains almost the same performance as global optimization but with faster speed. Furthermore, sensitivities of optimal operation parameters with respect to external...

385

applied modal analysis: Topics by E-print Network  

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

instability. Introduction Disc brake noise continues to be object of investigation for automotive-mail: francesco.massi@uniroma1.it Abstract In this paper, an experimental...

386

Interference microscopy and Fourier fringe analysis applied to measuring  

E-Print Network [OSTI]

in Fig. 1. It forms an image of the experimental cell that interferes with a plane wave, the two being (Peltier) coolers; 5,

Ribak, Erez

387

analysis techniques applied: Topics by E-print Network  

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

damage due to atmo- spheric corrosion. The early detection of corroded areas in oil introduce a new Nondestructive Evaluation (NDE) method for corrosion inspec- tion on...

388

Challenges in Applying Surface Analysis Methods to Nanoparticles and  

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

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

389

Behavioral Economics Applied to Energy Demand Analysis: A Foundation  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAboutScience ProgramBackground8.0.1Vulture SpatialBECOMEBehaviorBehavior

390

Behavioral Economics Applied to Energy Demand Analysis: A Foundation -  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone6 M. Babzien, I. Ben-Zvi, P.2.2 Beamline21BeckyEnergy

391

International Institute for Applied Systems Analysis | Open Energy  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat JumpInc Place: EdenOverview Of The Data,association Name:Information

392

Layer of protection analysis applied to ammonia refrigeration systems  

E-Print Network [OSTI]

Ammonia refrigeration systems are widely used in industry. Demand of these systems is expected to increase due to the advantages of ammonia as refrigerant and because ammonia is considered a green refrigerant. Therefore, it is important to evaluate...

Zuniga, Gerald Alexander

2009-05-15T23:59:59.000Z

393

Challenges in Applying Surface Analysis Methods to Nanoparticles...  

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

and other nanostructured materials present a variety of challenges. This paper reviews environmental effects on measurements of Ce-oxide nanoparticles and nanoporous silica...

394

Thermomechanical analysis of fast-burst reactors  

SciTech Connect (OSTI)

Fast-burst reactors are designed to provide intense, short-duration pulses of neutrons. The fission reaction also produces extreme time-dependent heating of the nuclear fuel. An existing transient-dynamic finite element code was modified specifically to compute the time-dependent stresses and displacements due to thermal shock loads of reactors. Thermomechanical analysis was then applied to determine structural feasibility of various concepts for an EDNA-type reactor and to optimize the mechanical design of the new SPR III-M reactor.

Miller, J.D.

1994-08-01T23:59:59.000Z

395

Operator Analysis of Neutrinoless Double Beta Decay  

E-Print Network [OSTI]

We study the effective operators of the standard model fields which would yield an observable rate of neutrinoless double beta decay. We particularly focus on the possibility that neutrinoless double beta decay is dominantly induced by lepton-number-violating higher dimensional operators other than the Majorana neutrino mass. Our analysis can be applied to models in which neutrinoless double beta decay is induced either by a strong dynamics or by quantum gravity effects at a fundamental scale near the TeV scale as well as the conventional models in which neutrinoless double beta decay is induced by perturbative renormalizable interactions.

Kiwoon Choi; Kwang Sik Jeong; Wan Young Song

2002-07-19T23:59:59.000Z

396

E-Print Network 3.0 - analysis system applicable Sample Search...  

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

and Summary: Dynamic Systems Analysis and Simulation Dynamic Systems Analysis and Simulation (DSAS) Group... members have extensive experience developing novel applications...

397

SYLLABUS--GEOGRAPHY (GEOG)-455 APPLIED CLIMATOLOGY  

E-Print Network [OSTI]

SYLLABUS--GEOGRAPHY (GEOG)-455 APPLIED CLIMATOLOGY Spring 2006 Time: T-R 12:30-1:45 p.m. (BOL B95-455-001-lec@uwm.edu Textbooks: Thompson-Perry, Applied Climatology: principles and practice, (1997, graduate students will prepare a 10 page (2500 word minimum) paper on a project using applied climatology

Saldin, Dilano

398

SCHOOL OF APPLIED SCIENCES THE POSITION  

E-Print Network [OSTI]

DEAN SCHOOL OF APPLIED SCIENCES THE POSITION The University of Mississippi (www.olemiss.edu) seeks applications and nominations for the position of Dean of the School of Applied Sciences. The School of Applied Sciences is a free-standing academic unit whose Dean reports directly to the Vice

Tchumper, Gregory S.

399

Theoretical studies of combustion dynamics  

SciTech Connect (OSTI)

The basic objectives of this research program are to develop and apply theoretical techniques to fundamental dynamical processes of importance in gas-phase combustion. There are two major areas currently supported by this grant. One is reactive scattering of diatom-diatom systems, and the other is the dynamics of complex formation and decay based on L{sup 2} methods. In all of these studies, the authors focus on systems that are of interest experimentally, and for which potential energy surfaces based, at least in part, on ab initio calculations are available.

Bowman, J.M. [Emory Univ., Atlanta, GA (United States)

1993-12-01T23:59:59.000Z

400

applied sciences branch: Topics by E-print Network  

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

Master of Science Program in Applied Science Education Department 3 & APPLIED SCIENCE SPLIKER ENGINEERING Biotechnology Websites Summary: & APPLIED SCIENCE SPLIKER...

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


401

SIAM J. APPLIED DYNAMICAL SYSTEMS c xxxx Society for Industrial and Applied Mathematics Vol. xx, pp. x xx  

E-Print Network [OSTI]

. Social phenomena, such as the spread of a technological or behavioural innovation through communities, but also whether or not an individual's social circle has adopted the innovation. As such, the spread of the innovation will be influenced by the network of social contacts between individuals, including both social

Rucklidge, Alastair

402

SIAM J. APPLIED DYNAMICAL SYSTEMS c 2005 Society for Industrial and Applied Mathematics Vol. 4, No. 4, pp. 783807  

E-Print Network [OSTI]

(over a broader distribution) in both coordinate and momentum space. As the gas is cooled, condensation. 4, pp. 783­807 Bose-Einstein Condensates in Superlattices Mason A. Porter and P. G. Kevrekidis- perlattices to study cigar-shaped Bose­Einstein condensates (BECs) in such potentials. We examine spatially

Porter, Mason A.

403

Dynamic nuclear polarization and Hanle effect in (In,Ga)As/GaAs quantum dots. Role of nuclear spin fluctuations  

SciTech Connect (OSTI)

The degree of circular polarization of photoluminescence of (In,Ga)As quantum dots as a function of magnetic field applied perpendicular to the optical axis (Hanle effect) is experimentally studied. The measurements have been performed at various regimes of the optical excitation modulation. The analysis of experimental data has been performed in the framework of a vector model of regular nuclear spin polarization and its fluctuations. The analysis allowed us to evaluate the magnitude of nuclear polarization and its dynamics at the experimental conditions used.

Gerlovin, I. Ya. [Spin Optics Laboratory, Saint Petersburg State University, Petrodvorets, 198504 St. Petersburg (Russian Federation); Cherbunin, R. V.; Ignatiev, I. V.; Kuznetsova, M. S.; Verbin, S. Yu. [Spin Optics Laboratory, Saint Petersburg State University, Petrodvorets, 198504 St. Petersburg, Russia and Experimentelle Physik 2, Technische Universität Dortmund, D-44221 Dortmund (Germany); Flisinski, K.; Bayer, M. [Experimentelle Physik 2, Technische Universität Dortmund, D-44221 Dortmund (Germany); Reuter, D.; Wieck, A. D. [Angewandte Festkörperphysik, Ruhr-Universität Bochum, D-44780 Bochum (Germany); Yakovlev, D. R. [Experimentelle Physik 2, Technische Universität Dortmund, D-44221 Dortmund, Germany and A. F. Ioffe Physical-Technical Institute, Russian Academy of Sciences, 194021 St. Petersburg (Russian Federation)

2013-12-04T23:59:59.000Z

404

A model of forensic analysis using goal-oriented logging  

E-Print Network [OSTI]

A Toward Forensic Models . . . . . . . . . . . . . . . .of Forensic Analysis . . . . . . . . . . . . . . . .150 3. Applying Forensic Techniques to Intrusion

Peisert, Sean Philip

2007-01-01T23:59:59.000Z

405

Development and application of the dynamic system doctor to nuclear reactor probabilistic risk assessments.  

SciTech Connect (OSTI)

This LDRD project has produced a tool that makes probabilistic risk assessments (PRAs) of nuclear reactors - analyses which are very resource intensive - more efficient. PRAs of nuclear reactors are being increasingly relied on by the United States Nuclear Regulatory Commission (U.S.N.R.C.) for licensing decisions for current and advanced reactors. Yet, PRAs are produced much as they were 20 years ago. The work here applied a modern systems analysis technique to the accident progression analysis portion of the PRA; the technique was a system-independent multi-task computer driver routine. Initially, the objective of the work was to fuse the accident progression event tree (APET) portion of a PRA to the dynamic system doctor (DSD) created by Ohio State University. Instead, during the initial efforts, it was found that the DSD could be linked directly to a detailed accident progression phenomenological simulation code - the type on which APET construction and analysis relies, albeit indirectly - and thereby directly create and analyze the APET. The expanded DSD computational architecture and infrastructure that was created during this effort is called ADAPT (Analysis of Dynamic Accident Progression Trees). ADAPT is a system software infrastructure that supports execution and analysis of multiple dynamic event-tree simulations on distributed environments. A simulator abstraction layer was developed, and a generic driver was implemented for executing simulators on a distributed environment. As a demonstration of the use of the methodological tool, ADAPT was applied to quantify the likelihood of competing accident progression pathways occurring for a particular accident scenario in a particular reactor type using MELCOR, an integrated severe accident analysis code developed at Sandia. (ADAPT was intentionally created with flexibility, however, and is not limited to interacting with only one code. With minor coding changes to input files, ADAPT can be linked to other such codes.) The results of this demonstration indicate that the approach can significantly reduce the resources required for Level 2 PRAs. From the phenomenological viewpoint, ADAPT can also treat the associated epistemic and aleatory uncertainties. This methodology can also be used for analyses of other complex systems. Any complex system can be analyzed using ADAPT if the workings of that system can be displayed as an event tree, there is a computer code that simulates how those events could progress, and that simulator code has switches to turn on and off system events, phenomena, etc. Using and applying ADAPT to particular problems is not human independent. While the human resources for the creation and analysis of the accident progression are significantly decreased, knowledgeable analysts are still necessary for a given project to apply ADAPT successfully. This research and development effort has met its original goals and then exceeded them.

Kunsman, David Marvin; Aldemir, Tunc (Ohio State University); Rutt, Benjamin (Ohio State University); Metzroth, Kyle (Ohio State University); Catalyurek, Umit (Ohio State University); Denning, Richard (Ohio State University); Hakobyan, Aram (Ohio State University); Dunagan, Sean C.

2008-05-01T23:59:59.000Z

406

Applied Science Division annual report, Environmental Research Program FY 1983  

SciTech Connect (OSTI)

The primary concern of the Environmental Research Program is the understanding of pollutant formation, transport, and transformation and the impacts of pollutants on the environment. These impacts include global, regional, and local effects on the atmosphere and hydrosphere, and on certain aspects of human health. This multidisciplinary research program includes fundamental and applied research in physics, chemistry, engineering, and biology, as well as research on the development of advanced methods of measurement and analysis. During FY 1983, research concentrated on atmospheric physics and chemistry, applied physics and laser spectroscopy, combustion theory and phenomena, environmental effects of oil shale processing, freshwater ecology and acid precipitation, trace element analysis for the investigation of present and historical environmental impacts, and a continuing survey of instrumentation for environmental monitoring.

Cairns, E.J.; Novakov, T.

1984-05-01T23:59:59.000Z

407

Summaries of the FY 1981 applied mathematical sciences research program  

SciTech Connect (OSTI)

Applied Mathematical Sciences serves as the DOE focal point for monitoring and advancing the state of the art in mathematics, statistics, and computer science. Several DOE mission programs develop and refine specific techniques from the applied mathematical sciences applicable to their immediate needs. In contrast, Applied Mathematical Sciences concentrates on more broadly based, continuing needs throughout the DOE community. Emphasis is placed on research basic to the analysis, development, and use of large-scale computational models; the management and analysis of large, complex collections of information; and the effective use of DOE computing resources. The purpose of this research is not to improve existing technologies and methodologies, but rather to render them obsolete. Each part of the Applied Mathematical Sciences activity has been designed with the help and advice of leading mathematicians and computer scientists from universities, industry, and DOE laboratories to assure the broadest and greatest impact on the nation's energy R and D enterprise. Many of them are expert in industry's needs in the relevant areas. Close liaison is maintained with other federal agencies in the selection of areas of emphasis and of individual research tasks. This is high leverage research. In favorable cases, the results may be of great benefit simultaneously to a number of different energy technologies. The requested increase will be an exceptionally sound investment.

Not Available

1981-12-01T23:59:59.000Z

408

Symbolic dynamics  

E-Print Network [OSTI]

This chapter presents some of the links between automata theory and symbolic dynamics. The emphasis is on two particular points. The first one is the interplay between some particular classes of automata, such as local automata and results on embeddings of shifts of finite type. The second one is the connection between syntactic semigroups and the classification of sofic shifts up to conjugacy.

Béal, M -P; Eilers, S; Perrin, D

2010-01-01T23:59:59.000Z

409

Drift Degradation Analysis  

SciTech Connect (OSTI)

Degradation of underground openings as a function of time is a natural and expected occurrence for any subsurface excavation. Over time, changes occur to both the stress condition and the strength of the rock mass due to several interacting factors. Once the factors contributing to degradation are characterized, the effects of drift degradation can typically be mitigated through appropriate design and maintenance of the ground support system. However, for the emplacement drifts of the geologic repository at Yucca Mountain, it is necessary to characterize drift degradation over a 10,000-year period, which is well beyond the functional period of the ground support system. This document provides an analysis of the amount of drift degradation anticipated in repository emplacement drifts for discrete events and time increments extending throughout the 10,000-year regulatory period for postclosure performance. This revision of the drift degradation analysis was developed to support the license application and fulfill specific agreement items between the U.S. Nuclear Regulatory Commission (NRC) and the U.S. Department of Energy (DOE). The earlier versions of ''Drift Degradation Analysis'' (BSC 2001 [DIRS 156304]) relied primarily on the DRKBA numerical code, which provides for a probabilistic key-block assessment based on realistic fracture patterns determined from field mapping in the Exploratory Studies Facility (ESF) at Yucca Mountain. A key block is defined as a critical block in the surrounding rock mass of an excavation, which is removable and oriented in an unsafe manner such that it is likely to move into an opening unless support is provided. However, the use of the DRKBA code to determine potential rockfall data at the repository horizon during the postclosure period has several limitations: (1) The DRKBA code cannot explicitly apply dynamic loads due to seismic ground motion. (2) The DRKBA code cannot explicitly apply loads due to thermal stress. (3) The DRKBA code, which determines structurally controlled key-block failure, is not applicable for stress-controlled failure in the lithophysal units. To address these limitations, additional numerical codes have been included that can explicitly apply seismic and thermal loads, providing significant improvements to the analysis of drift degradation and extending the validity of drift degradation models.

D. Kicker

2004-09-16T23:59:59.000Z

410

Dynamic imaging with electron microscopy  

SciTech Connect (OSTI)

Livermore researchers have perfected an electron microscope to study fast-evolving material processes and chemical reactions. By applying engineering, microscopy, and laser expertise to the decades-old technology of electron microscopy, the dynamic transmission electron microscope (DTEM) team has developed a technique that can capture images of phenomena that are both very small and very fast. DTEM uses a precisely timed laser pulse to achieve a short but intense electron beam for imaging. When synchronized with a dynamic event in the microscope's field of view, DTEM allows scientists to record and measure material changes in action. A new movie-mode capability, which earned a 2013 R&D 100 Award from R&D Magazine, uses up to nine laser pulses to sequentially capture fast, irreversible, even one-of-a-kind material changes at the nanometer scale. DTEM projects are advancing basic and applied materials research, including such areas as nanostructure growth, phase transformations, and chemical reactions.

Campbell, Geoffrey; McKeown, Joe; Santala, Melissa

2014-02-20T23:59:59.000Z

411

Dynamic imaging with electron microscopy  

ScienceCinema (OSTI)

Livermore researchers have perfected an electron microscope to study fast-evolving material processes and chemical reactions. By applying engineering, microscopy, and laser expertise to the decades-old technology of electron microscopy, the dynamic transmission electron microscope (DTEM) team has developed a technique that can capture images of phenomena that are both very small and very fast. DTEM uses a precisely timed laser pulse to achieve a short but intense electron beam for imaging. When synchronized with a dynamic event in the microscope's field of view, DTEM allows scientists to record and measure material changes in action. A new movie-mode capability, which earned a 2013 R&D 100 Award from R&D Magazine, uses up to nine laser pulses to sequentially capture fast, irreversible, even one-of-a-kind material changes at the nanometer scale. DTEM projects are advancing basic and applied materials research, including such areas as nanostructure growth, phase transformations, and chemical reactions.

Campbell, Geoffrey; McKeown, Joe; Santala, Melissa

2014-05-30T23:59:59.000Z

412

Postdoctoral Position in Applied Mathematics Seminar for Applied Mathematics of ETH Zurich  

E-Print Network [OSTI]

Postdoctoral Position in Applied Mathematics Seminar for Applied Mathematics of ETH Z¨urich The Seminar for Applied Mathematics (SAM) of ETH Z¨urich offers a post- doctoral position in applied a competitive salary according to the standards of ETH Z¨urich as well as the opportunity to work

Feichtinger, Hans Georg

413

PhD Position in Applied Mathematics Seminar for Applied Mathematics of ETH Zurich  

E-Print Network [OSTI]

PhD Position in Applied Mathematics Seminar for Applied Mathematics of ETH Z¨urich The Seminar for Applied Mathematics (SAM) of ETH Z¨urich offers a PhD position in applied mathematics. The main research teaching load. The successful candidate will receive a competitive salary according to the standards of ETH

Feichtinger, Hans Georg

414

Modeling International Relationships in Applied General Equilibrium...  

Open Energy Info (EERE)

Relationships in Applied General Equilibrium (MIRAGE) AgencyCompany Organization: International Food Policy Research Institute, Centre d'Etudes Prospectives et d'Informations...

415

Environmental Impact and Sustainability Applied General Equilibrium...  

Open Energy Info (EERE)

Equilibrium Model (ENVISAGE) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Environmental Impact and Sustainability Applied General Equilibrium Model (ENVISAGE)...

416

Corrections APPLIED PHYSICAL SCIENCES, BIOPHYSICS AND  

E-Print Network [OSTI]

Corrections APPLIED PHYSICAL SCIENCES, BIOPHYSICS AND COMPUTATIONAL BIOLOGY Correction gene, MyHC-IIb, which is thought under most circumstances not to be expressed. The physiological

Spudich, James A.

417

Building America Expert Meeting: Recommendations for Applying...  

Energy Savers [EERE]

Building America Expert Meeting: Recommendations for Applying Water Heaters in Combination Space and Domestic Water Heating Systems Building America Expert Meeting: Recommendations...

418

Three-dimensional medical image analysis using local dynamic algorithm selection on a multiple-instruction, multiple-data architecture. Doctoral thesis  

SciTech Connect (OSTI)

The dissertation outlines development of a medical imaging machine which renders 3D images from voxel data within a MIMD multiprocessor architecture at interactive rates. Interactive performance is achieved using local dynamic selection of the optimum adaptive recursive hidden-surface removal algorithm. A survey of the medical imaging, graphics, and medical imaging modality literature is provided. A description of Computerized Technology, Magnetic Resonance Imaging, Positron Emission Tomography, Single Photon Emission Computed Tomography, and Ultrasound imaging modalities is presented Previous work in 3D volume rendering graphics techniques and data models is introduced. Eleven medical imaging machines are examined with emphasis on characterization of the major innovation(s) and performance of each machine. A five stage image processing pipeline is described.

Stytz, M.R.

1989-01-01T23:59:59.000Z

419

Mapping molecular dynamics computations to hypercubes  

E-Print Network [OSTI]

December 1993 Major Subject: ('omputer Science MAPPING MOLECULAR DYNAMICS COMPUTATIONS TO HYPERCUBES A Thesis by VAMSEE IvRISHNA LAIvAMSANI Submitted to Texas AX. 'M University in partial fnlfillment of the requirements for the degree of lv... for systematic modeling, mapping and perfornianrc analysis of a Grand Challenge application problein in computational biology called Moleru- lar Dynamics S&tnufat&un uj Proteins Molecular Dynamics (MD) is an important techn&que used m computational...

Lakamsani, Vamsee Krishna

1993-01-01T23:59:59.000Z

420

Flavor Dynamics  

E-Print Network [OSTI]

The purpose of BRAHMS is to survey the dynamics of relativistic heavy ion (as well as pp and d-A) collisions over a very wide range of rapidity and transverse momentum. The sum of these data may give us a glimpse of the initial state of the system, its transverse and longitudinal evolution and how the nature of the system changes with time. Here I will concentrate on the origin and dynamics of the light flavors, i.e. the creation and transport of the up, down and strange quarks. The results presented here are certainly not the end of the story. It is my hope that in a few years new detectors will reveal the rapidity dependence of the charm and bottom quarks.

Michael Murray; for the BRAHMS Collaboration

2007-10-24T23:59:59.000Z

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


421

Dynamic response of guyed towers  

E-Print Network [OSTI]

guyed towers. A parametric study was conducted using eigen analysis to determine the effects of consistent mass, geometric stiffness and P-Delta gravity loads. Time domain solutions were obtained by direct integration for motion due to regular Stokes... guyed tower 2 References to guyed tower dynamic analysis 4 Effect of mass formulation on tower natural periods. 5 P-Delta effect on fundamental period. 6 Effect of axial compression on the 1st & 2nd mode. 7 Geometric stiffness effect on natural...

Gillcrist, Mark Christopher

2012-06-07T23:59:59.000Z

422

Critiquing the Masters: Applying 3D Production Lighting Principles to Famous 2D Works of Art  

E-Print Network [OSTI]

This thesis demonstrates the effects of applying lighting principles developed for 3D computer graphics production to well-known historical 2D paintings. The visual analysis and cinematographic direction is derived from the iterative review...

Ford, Angelique

2012-10-19T23:59:59.000Z

423

What is Biomedical Engineering? Biomedical engineers are professionally trained to apply engineering  

E-Print Network [OSTI]

What is Biomedical Engineering? Biomedical engineers are professionally trained to apply engineering analysis and design to clinical applications. Biomedical engineers understand how the human body diseases and injuries. The systems designed by biomedical engineers will improve patient outcomes

Lu, Chang

424

Timetables Sem 1 2013/14 Student timetable -MSc in Applied Mathematics  

E-Print Network [OSTI]

/65061 Continuum Mechanics Alan Turing G.209 Hazel (A) MATH65061 LECTURE MATH64051 Mathematical Methods (MAGIC022) Alan Turing Magic Room 1.213 Gajjar (J) LECTURE MATH44041/64041 Applied Dynamical Systems Univ Place 6.213 Glendinning (P) MATH64041 LECTURE MATH64051 Mathematical Methods (MAGIC022) Alan Turing Magic Room 1

Sidorov, Nikita

425

FINITE VOLUME METHODS APPLIED TO THE COMPUTATIONAL MODELLING OF WELDING PHENOMENA  

E-Print Network [OSTI]

1 FINITE VOLUME METHODS APPLIED TO THE COMPUTATIONAL MODELLING OF WELDING PHENOMENA Gareth A.Taylor@brunel.ac.uk ABSTRACT This paper presents the computational modelling of welding phenomena within a versatile numerical) and Computational Solid Mechanics (CSM). With regard to the CFD modelling of the weld pool fluid dynamics, heat

Taylor, Gary

426

Idealized Test Cases for Dynamical Core Experiments  

E-Print Network [OSTI]

Idealized Test Cases for Dynamical Core Experiments Christiane Jablonowski (University of Michigan-13/2006 #12;Motivation · Test cases for 3D dynamical cores on the sphere ­ are hard to find in the literature groups ­ lack standardized & easy-to-use analysis techniques · Idea: Establish a collection of test cases

Jablonowski, Christiane

427

The Quantum-Relativistic Dynamics of the Universe  

E-Print Network [OSTI]

From the analysis of the quantum and relativistic properties of the particles it results the unified quantum-relativistic dynamics of the physical reality (Universe).

Skalsky, Vladimir

2015-01-01T23:59:59.000Z

428

Flexible dynamics of floating wind turbines  

E-Print Network [OSTI]

This work presents Tower Flex, a structural dynamics model for a coupled analysis of offshore floating wind turbines consisting of a tower, a floating platform and a mooring system. In this multi-body, linear frequency-domain ...

Luypaert, Thomas (Thomas J.)

2012-01-01T23:59:59.000Z

429

Gaussian process emulation of dynamic computer codes  

E-Print Network [OSTI]

Gaussian process emulation of dynamic computer codes By Stefano Conti, Centre for Health Economics of simulator runs. In particular, standard Monte Carlo based methods of sensitivity analysis require thousands

Oakley, Jeremy

430

Chris Jones Department of Applied Mathematics  

E-Print Network [OSTI]

) Exoplanet detection (vi) Planetary dynamics: ring formation, N-body problem, tidal interactions etc. (vii you can only create planets close to the Sun this way. Lithium is depleted by nuclear burning

Haase, Markus

431

Dynamic Positioning Simulator Dynamic Positioning Simulator  

E-Print Network [OSTI]

Simulator 5 / 24 #12;Dynamic Positioning Simulator Dynamic Positioning Why Dynamic Positioning? Advantages Dynamic Positioning: No tugboats needed; Offshore set-up is quick; Power saving; Precision situations more on Ship: Wind Force Fw = 1 2 air V 2 rw CXw (rw )AT 1 2 air V 2 rw CYw (rw )AL Mw = 1 2 air V 2 rw CMw (rw

Vuik, Kees

432

15.872 System Dynamics II, Fall 2010  

E-Print Network [OSTI]

15.872 is a continuation of 15.871 Introduction to System Dynamics. It emphasizes tools and methods needed to apply systems thinking and simulation modeling successfully in complex real-world settings. The course uses ...

Sterman, John

433

How to Apply??? Students wishing to apply for a position in the  

E-Print Network [OSTI]

as grounds maintenance and landscaping responsibilities. Work Schedule: The workHow to Apply??? Students wishing to apply for a position in the landscape your application package to: Cranbrook Educational Community Landscape Horticulture

434

Decision Support:Decision Support: Decision AnalysisDecision Analysis  

E-Print Network [OSTI]

-Making under Risk · Expected Value · Sensitivity Analysis Decision Analysis Decision Analysis: Applied Decision Decision-Making Process Source: Decision Analysis ­ A Tool to Deal with Uncertainty, http Succeed Fail Decision Trees OR/MS · Multi-Criteria Optimisation · Risk Analysis and Simulation · Bayesian

Bohanec, Marko

435

Roadmap: Applied Engineering Applied Engineering and Technology Management Bachelor of Science  

E-Print Network [OSTI]

Roadmap: Applied Engineering ­ Applied Engineering and Technology Management ­ Bachelor of Science­2013 Page 1 of 2 | Last Updated: 21-May-12/JS This roadmap is a recommended semester-by-semester plan TECH 43550 Computer-Aided Manufacturing 3 General Elective 6 #12;Roadmap: Applied Engineering

Sheridan, Scott

436

BUSINESS AND The certificate or associate of applied science degree in applied  

E-Print Network [OSTI]

APPLIED BUSINESS AND ACCOUNTING The certificate or associate of applied science degree in applied business provides you with a well-rounded business education covering a wide range of related subjects. The program covers basic business and accounting knowledge and skills, emerging technologies, advanced

Ickert-Bond, Steffi

437

FACULTY OF APPLIED SCIENCE ENGINEERING NEWS  

E-Print Network [OSTI]

how his research in the Pulp and Paper Centre -- applying and heating thermoplastic polymers to lift found an ingenious way to relieve the stress of dropped calls by using radio and TV channels to transmit

Pulfrey, David L.

438

HOCHSCHULE ESSLINGEN: University of Applied Sciences  

E-Print Network [OSTI]

and Electrical Engineering Social work, health and nursing Building services, energy and environmental, Energy and Environmental Engineering Energy and Environmental Engineering Building Services Social workHOCHSCHULE ESSLINGEN: University of Applied Sciences Esslingen, Germany About: Engineering

Duchowski, Andrew T.

439

GenII Gap Analysis  

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

generally recognized and acceptable approaches for modeling source and consequence phenomenology, and can be applied as appropriate to support accident analysis in term ocumented...

440

Ris-R-1395(EN) Generator Dynamics in  

E-Print Network [OSTI]

Risø-R-1395(EN) Generator Dynamics in Aeroelastic Analysis and Simulations Torben J. Larsen, Morten Laboratory, Roskilde, Denmark July 2003 #12;Abstract This report contains a description of a dynamic model order expression for the slow part. Dynamic effects of the first order terms in the model as well

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


441

Dynamic study of tunable stiffness scanning microscope probe  

E-Print Network [OSTI]

This study examines the dynamic characteristics of the in-plane tunable stiffness scanning microscope probe for an atomic force microscope (AFM). The analysis was carried out using finite element analysis (FEA) methods for ...

Vega González, Myraida Angélica

2005-01-01T23:59:59.000Z

442

The modified dynamics (MOND) predicts an absolute maximum to the acceleration produced by `dark halos'  

E-Print Network [OSTI]

We have recently discovered that the modified dynamics (MOND) implies some universal upper bound on the acceleration that can be contributed by a `dark halo'--assumed in a Newtonian analysis to account for the effects of MOND. Not surprisingly, the limit is of the order of the acceleration constant of the theory. This can be contrasted directly with the results of structure-formation simulations. The new limit is substantial and different from earlier MOND acceleration limits (discussed in connection with the MOND explanation of the Freeman law for galaxy disks, and the Fish law for ellipticals): It pertains to the `halo', and not to the observed galaxy; it is absolute, and independent of further physical assumptions on the nature of the galactic system; and it applies at all radii, whereas the other limits apply only to the mean acceleration in the system.

Rafael Brada; Mordehai Milgrom

1998-12-21T23:59:59.000Z

443

Dynamical stability of Minkowski space in higher order gravity  

E-Print Network [OSTI]

We discuss the Minkowski stability problem in modified gravity by using dynamical system approach. The method to investigate dynamical stability of Minkowski space was proposed. This method was applied for a some modified gravity theories, such as $f(R)$ gravity, $f(R)+\\alpha R\\Box R$ gravity and scalar-tensor gravity models with non-minimal kinetic coupling.

Petr Tretyakov

2014-07-15T23:59:59.000Z

444

Ris-R-1453(EN) Optics and Fluid Dynamics  

E-Print Network [OSTI]

Risø-R-1453(EN) Optics and Fluid Dynamics Department Annual Progress Report for 2003 Edited by H May 2004 #12;Abstract The Optics and Fluid Dynamics Department performs basic and applied research within three scientific programmes: (1) laser systems and optical materials, (2) optical diagnostics

445

Ris-R-1399(EN) Optics and Fluid Dynamics  

E-Print Network [OSTI]

Risø-R-1399(EN) Optics and Fluid Dynamics Department Annual Progress Report for 2002 Edited by H May 2003 #12;Abstract The Optics and Fluid Dynamics Department performs basic and applied research within three scientific programmes: (1) laser systems and optical materials, (2) optical diagnostics

446

Ris-R-1314(EN) Optics and Fluid Dynamics  

E-Print Network [OSTI]

Risø-R-1314(EN) Optics and Fluid Dynamics Department Annual Progress Report for 2001 Edited by H March 2002 #12;Abstract The Optics and Fluid Dynamics Department performs basic and applied research within three scientific programmes: (1) laser systems and optical materials, (2) optical diagnostics

447

Dynamic tuning of chemiresistor sensitivity using mechanical strain  

DOE Patents [OSTI]

The sensitivity of a chemiresistor sensor can be dynamically tuned using mechanical strain. The increase in sensitivity is a smooth, continuous function of the applied strain, and the effect can be reversible. Sensitivity tuning enables the response curve of the sensor to be dynamically optimized for sensing analytes, such as volatile organic compounds, over a wide concentration range.

Martin, James E; Read, Douglas H

2014-09-30T23:59:59.000Z

448

Dynamic Modelling for Control of Fuel Cells Federico Zenith  

E-Print Network [OSTI]

Dynamic Modelling for Control of Fuel Cells Federico Zenith Sigurd Skogestad Department of Chemical Engineering Norwegian University of Science and Technology ( ntnu) Trondheim Abstract Fuel-cell dynamics have been investigated with a variable-resistance board applied to a high temperature polymer fuel cell

Skogestad, Sigurd

449

25th AIAA Applied Aerodynamics Conference June 2528, 2007/Miami, FL  

E-Print Network [OSTI]

25th AIAA Applied Aerodynamics Conference June 25­28, 2007/Miami, FL Validation Study of Aerodynamic Analysis Tools for Design Optimization of Helicopter Rotors Seongim Choi , Juan J. Alonso , Edwin current aerodynamic analysis tools in predicting the unsteady flow field generated by helicopter rotors

Alonso, Juan J.

450

Laser spectroscopy and dynamics of transient species  

SciTech Connect (OSTI)

The goal of this program is to study the vibrational and electronic spectra and excited state dynamics of a number of transient sulfur and oxygen species. A variety of supersonic jet techniques, as well as high resolution FT-IR and intracavity dye laser spectroscopy, have been applied to these studies.

Clouthier, D.J. [Univ. of Kentucky, Lexington (United States)

1993-12-01T23:59:59.000Z

451

Capturing Dynamics in the Power Grid: Formulation of Dynamic State Estimation through Data Assimilation  

SciTech Connect (OSTI)

With the increasing complexity resulting from uncertainties and stochastic variations introduced by intermittent renewable energy sources, responsive loads, mobile consumption of plug-in vehicles, and new market designs, more and more dynamic behaviors are observed in everyday power system operation. To operate a power system efficiently and reliably, it is critical to adopt a dynamic paradigm so that effective control actions can be taken in time. The dynamic paradigm needs to include three fundamental components: dynamic state estimation; look-ahead dynamic simulation; and dynamic contingency analysis (Figure 1). These three components answer three basic questions: where the system is; where the system is going; and how secure the system is against accidents. The dynamic state estimation provides a solid cornerstone to support the other 2 components and is the focus of this study.

Zhou, Ning; Huang, Zhenyu; Meng, Da; Elbert, Stephen T.; Wang, Shaobu; Diao, Ruisheng

2014-03-31T23:59:59.000Z

452

Modeling and Management of Nonlinear Dependencies Copulas in Dynamic Financial  

E-Print Network [OSTI]

an important tool for decision making and an essential part of enterprise risk management (ERM), particularly. Keywords: Non-Life Insurance, Risk Management, Dynamic Financial Analysis, Co- pulas, PerformanceModeling and Management of Nonlinear Dependencies ­ Copulas in Dynamic Financial Analysis Martin

Ulm, Universität

453

applied materials science: Topics by E-print Network  

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

applied in chemical or materials sciences, physics, biology, psychology, applied maths, engineering - anything science brings clear benefits to: researchers (developing...

454

Apply for Beam Time | Advanced Photon Source  

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

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

455

Apply for a Job | Argonne National Laboratory  

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

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

456

Apply to the Cyclotron Institute REU Program  

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

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

457

Apply to the Cyclotron Institute REU Program  

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

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

458

Nonlinear Fluid Dynamics from Gravity  

E-Print Network [OSTI]

Black branes in AdS5 appear in a four parameter family labeled by their velocity and temperature. Promoting these parameters to Goldstone modes or collective coordinate fields -- arbitrary functions of the coordinates on the boundary of AdS5 -- we use Einstein's equations together with regularity requirements and boundary conditions to determine their dynamics. The resultant equations turn out to be those of boundary fluid dynamics, with specific values for fluid parameters. Our analysis is perturbative in the boundary derivative expansion but is valid for arbitrary amplitudes. Our work may be regarded as a derivation of the nonlinear equations of boundary fluid dynamics from gravity. As a concrete application we find an explicit expression for the expansion of this fluid stress tensor including terms up to second order in the derivative expansion.

Sayantani Bhattacharyya; Veronika E Hubeny; Shiraz Minwalla; Mukund Rangamani

2008-04-02T23:59:59.000Z

459

Dynamic defense workshop : from research to practice.  

SciTech Connect (OSTI)

On September 5th and 6th, 2012, the Dynamic Defense Workshop: From Research to Practice brought together researchers from academia, industry, and Sandia with the goals of increasing collaboration between Sandia National Laboratories and external organizations, de ning and un- derstanding dynamic, or moving target, defense concepts and directions, and gaining a greater understanding of the state of the art for dynamic defense. Through the workshop, we broadened and re ned our de nition and understanding, identi ed new approaches to inherent challenges, and de ned principles of dynamic defense. Half of the workshop was devoted to presentations of current state-of-the-art work. Presentation topics included areas such as the failure of current defenses, threats, techniques, goals of dynamic defense, theory, foundations of dynamic defense, future directions and open research questions related to dynamic defense. The remainder of the workshop was discussion, which was broken down into sessions on de ning challenges, applications to host or mobile environments, applications to enterprise network environments, exploring research and operational taxonomies, and determining how to apply scienti c rigor to and investigating the eld of dynamic defense.

Crosby, Sean Michael; Doak, Justin E.; Haas, Jason J.; Helinski, Ryan; Lamb, Christopher C.

2013-02-01T23:59:59.000Z

460

Protein Dynamics and Biocatalysis  

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

Protein Dynamics and Biocatalysis Protein Dynamics and Biocatalysis 1998 Annual Report Grand Challenge Projects biocatalysis.gif A model of the Michaelis complex for the TEM-1...

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


461

Society for Industrial and Applied Mathematics  

E-Print Network [OSTI]

Society for Industrial and Applied Mathematics Science and Industry Advance with Mathematics and computational science have become essential tools in the development of advances in science and technology with ethanol a viable solution to the world's dependence on fossil fuels? Can biofuel production be optimized

Aslan, Beyza Caliskan

462

Applying Reliability Models to the Space Shuttle  

E-Print Network [OSTI]

Applying Reliability Models to the Space Shuttle Norman F. Schneidewind Ted W. Keller #12;What are Reliability Models? Reliability Models are tools that Help Us: · Predict software Reliability. · Control software Reliability. · Assess software Reliability. This functions let an organization determine

Feitelson, Dror

463

Faculty of Engineering Bachelor of Applied Science  

E-Print Network [OSTI]

and Environmental Engineering; Electrical Engineering; Industrial Engineering and Mechanical, Automotive & MaterialsFaculty of Engineering Bachelor of Applied Science in Engineering The demands on professional engineers around the world are increasing in terms of what they must address: our society must confront

464

APPLYING HYPERTEXT STRUCTURES TO SOFTWARE DOCUMENTATION  

E-Print Network [OSTI]

with automating the management of software documentation to better increase its utility. We describe a prototype system, SLEUTH, currently under investigation as a vehicle for software documentation managementAPPLYING HYPERTEXT STRUCTURES TO SOFTWARE DOCUMENTATION James C. French 1 , John C. Knight, Allison

French, James C.

465

APPLYING HYPERTEXT STRUCTURES TO SOFTWARE DOCUMENTATION  

E-Print Network [OSTI]

the management of software documentation to better increase its utility. We describe a prototype system, SLEUTH, currently under investigation as a vehicle for software documentation management. The prototype maintains & Management," Vol. 33, No. 2, pp. 219-231, 1997. #12;Applying Hypertext Structures to Software Documentation

French, James C.

466

APPLIED GEOPHYSICS FIELD CLASS GEOLOGY 437  

E-Print Network [OSTI]

APPLIED GEOPHYSICS FIELD CLASS GEOLOGY 437 SPRING 2014 OF NATURAL RESOURCES INCLUDING OIL, COAL, MINERALS AND GROUNDWATER. OTHER APPLICATIONS OF GEOPHYSICS MAY, IF AVAILABLE, WE WILL VISIT AN OIL DRILLING RIG IN OPERATION. DATES FOR FIELD TRIPS WILL DEPEND ON THE WEATHER

Nickrent, Daniel L.

467

Applied Econometrics University of British Columbia  

E-Print Network [OSTI]

FRE 528 Applied Econometrics University of British Columbia Fall, 2014 Instructor: Michael Johnson constraints and econometric challenges) along with potential solutions to these problems. Students. Textbook/References: R. Carter Hill, William E. Griffiths and Guay C. Lim, Principles of Econometrics

Farrell, Anthony P.

468

Building on a Base: Applying Physics Education  

E-Print Network [OSTI]

Building on a Base: Applying Physics Education Research to Physics Teaching S.J. Pollock CU Boulder Concept Inventory (FCI) R. Hake, "...A six-thousand-student survey..." AJP 66, 64-74 (`98). = post. Pre R. App. Pre R. Care. Pre Math Pre Effort Pre Skept. Pre Overall Post Indep. Post Coher. Post Conc

Colorado at Boulder, University of

469

Action/Reason Code Applies To  

E-Print Network [OSTI]

9/28/2001 PAF Action/Reason Code Applies To: Business Unit Explanation ADL-Additional Job All Used to add a concurrent/additional job in the system APC-Appointment End Date ChanAll Used to change or payment terms CPR-Correction to pay rate All Used to correct a payrate FTE-FTE change All Used to indicate

Karonis, Nicholas T.

470

Uniform insulation applied-B ion diode  

DOE Patents [OSTI]

An applied-B field extraction ion diode has uniform insulation over an anode surface for increased efficiency. When the uniform insulation is accomplished with anode coils, and a charge-exchange foil is properly placed, the ions may be focused at a point on the z axis.

Seidel, David B. (Albuquerque, NM); Slutz, Stephen A. (Albuquerque, NM)

1988-01-01T23:59:59.000Z

471

Security Implications of Applying the Communications Assistance  

E-Print Network [OSTI]

of these is the recent FBI request to ap- ply the Communications Assistance for Law Enforcement Act (CALEA) to Vo with CALEA (without issuing specific regulations on what that would mean). The FBI has suggested that CALEA to innovate, while the latter is simply dangerous. The current FBI and FCC direction on CALEA applied to Vo

Landau, Susan

472

How to Apply for Senior Executive positions  

Broader source: Energy.gov [DOE]

To apply vacancies for SENIOR EXECUTIVE SERVICE (SES) , SENIOR LEVEL (SL), SCIENTIFIC AND PROFESSIONAL (ST) positions within the Department of Energy please visit OPM's website: http://www.usajobs.gov. From this site, you may download announcements for vacancies of interest to you.

473

Master of Science in Applied Science Education  

E-Print Network [OSTI]

Master of Science in Applied Science Education Student Handbook Division of Teacher Education, MI 49931 Telephone: (906) 487-2460 Fax: (906) 487-2468 Email: brad@mtu.edu www.ed.mtu.edu Update 6................................................................................................... 12 Elective Education and Science Courses.................................................. 12

474

Applied Physics A Materials Science & Processing  

E-Print Network [OSTI]

1 23 Applied Physics A Materials Science & Processing ISSN 0947-8396 Volume 117 Number 1 Appl. Phys. A (2014) 117:319-326 DOI 10.1007/s00339-014-8268-8 Background gas collisional effects on expanding fs at link.springer.com". #12;Background gas collisional effects on expanding fs and ns laser ablation plumes

Harilal, S. S.

475

The dynamic sphere test problem  

SciTech Connect (OSTI)

In this manuscript we define the dynamic sphere problem as a spherical shell composed of a homogeneous, linearly elastic material. The material exhibits either isotropic or transverse isotropic symmetry. When the problem is formulated in material coordinates, the balance of mass equation is satisfied automatically. Also, the material is assumed to be kept at constant temperature, so the only relevant equation is the equation of motion. The shell has inner radius r{sub i} and outer radius r{sub o}. Initially, the shell is at rest. We assume that the interior of the shell is a void and we apply a time-varying radial stress on the outer surface.

Chabaud, Brandon M. [Los Alamos National Laboratory; Brock, Jerry S. [Los Alamos National Laboratory; Smith, Brandon M. [Los Alamos National Laboratory

2012-05-16T23:59:59.000Z

476

SDI: Statistical dynamic interactions  

SciTech Connect (OSTI)

We focus on the combined statistical and dynamical aspects of heavy ion induced reactions. The overall picture is illustrated by considering the reaction {sup 36}Ar + {sup 238}U at a projectile energy of 35 MeV/nucleon. We illustrate the time dependent bound excitation energy due to the fusion/relaxation dynamics as calculated with the Boltzmann master equation. An estimate of the mass, charge and excitation of an equilibrated nucleus surviving the fast (dynamic) fusion-relaxation process is used as input into an evaporation calculation which includes 20 heavy fragment exit channels. The distribution of excitations between residue and clusters is explicitly calculated, as is the further deexcitation of clusters to bound nuclei. These results are compared with the exclusive cluster multiplicity measurements of Kim et al., and are found to give excellent agreement. We consider also an equilibrated residue system at 25% lower initial excitation, which gives an unsatisfactory exclusive multiplicity distribution. This illustrates that exclusive fragment multiplicity may provide a thermometer for system excitation. This analysis of data involves successive binary decay with no compressional effects nor phase transitions. Several examples of primary versus final (stable) cluster decay probabilities for an A = 100 nucleus at excitations of 100 to 800 MeV are presented. From these results a large change in multifragmentation patterns may be understood as a simple phase space consequence, invoking neither phase transitions, nor equation of state information. These results are used to illustrate physical quantities which are ambiguous to deduce from experimental fragment measurements. 14 refs., 4 figs.

Blann, M.; Mustafa, M.G. (Lawrence Livermore National Lab., CA (USA)); Peilert, G.; Stoecker, H.; Greiner, W. (Frankfurt Univ. (Germany, F.R.). Inst. fuer Theoretische Physik)

1991-04-01T23:59:59.000Z

477

Modeling Molecular Dynamics from Simulations  

SciTech Connect (OSTI)

Many important processes in biology occur at the molecular scale. A detailed understanding of these processes can lead to significant advances in the medical and life sciences. For example, many diseases are caused by protein aggregation or misfolding. One approach to studying these systems is to use physically-based computational simulations to model the interactions and movement of the molecules. While molecular simulations are computationally expensive, it is now possible to simulate many independent molecular dynamics trajectories in a parallel fashion by using super- or distributed- computing methods such as Folding@Home or Blue Gene. The analysis of these large, high-dimensional data sets presents new computational challenges. In this seminar, I will discuss a novel approach to analyzing large ensembles of molecular dynamics trajectories to generate a compact model of the dynamics. This model groups conformations into discrete states and describes the dynamics as Markovian, or history-independent, transitions between the states. I will discuss why the Markovian state model (MSM) is suitable for macromolecular dynamics, and how it can be used to answer many interesting and relevant questions about the molecular system. I will also discuss many of the computational and statistical challenges in building such a model, such as how to appropriately cluster conformations, determine the statistical reliability, and efficiently design new simulations.

Hinrichs, Nina Singhal (University of Chicago) [University of Chicago

2009-01-28T23:59:59.000Z

478

B.S. Applied Physics Program B.S. in Applied Physics  

E-Print Network [OSTI]

B.S. Applied Physics Program B.S. in Applied Physics Department(s) Physics and Astronomy College and magnetism 3. understanding of thermodynamics 4. understanding of modern physics 5. ability to perform modern laboratory experiments 6. ability to perform an independent physics research project 7. ability

Hemmers, Oliver

479

Who does this apply to? This process applies to all UW employees who  

E-Print Network [OSTI]

Who does this apply to? This process applies to all UW employees who possess, control, or have process · Delete, move, or alter files on the affected system · Contact or retaliate against the attacker, and Definitions October 2012 Important contact information Incident Management Process for Information Security

Queitsch, Christine

480

August 12, 2010 11:8 Journal of Applied Statistics Draft.5 Journal of Applied Statistics  

E-Print Network [OSTI]

August 12, 2010 11:8 Journal of Applied Statistics Draft.5 Journal of Applied Statistics Vol. 00 of Victoria, PO Box 3060, Victoria, B.C., Canada V8W 3R4; (July, 2009) A new parametric (3-parameter) survival Taylor & Francis DOI: 10.1080/0266476YYxxxxxxxx http://www.informaworld.com #12;August 12, 2010 11

Reed, W.J.

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


481

Toward Models for Forensic Analysis  

E-Print Network [OSTI]

Toward Models for Forensic Analysis Sean Peisert (UC San Diego) Matt Bishop (UC Davis) Sid Karin is Forensic Analysis? Forensic analysis is the process of answering the questions: How did an event take place? What was the nature of the event? What were the effects of the event? Forensic analysis applies

Peisert, Sean

482

Accelerated molecular dynamics methods  

SciTech Connect (OSTI)

The molecular dynamics method, although extremely powerful for materials simulations, is limited to times scales of roughly one microsecond or less. On longer time scales, dynamical evolution typically consists of infrequent events, which are usually activated processes. This course is focused on understanding infrequent-event dynamics, on methods for characterizing infrequent-event mechanisms and rate constants, and on methods for simulating long time scales in infrequent-event systems, emphasizing the recently developed accelerated molecular dynamics methods (hyperdynamics, parallel replica dynamics, and temperature accelerated dynamics). Some familiarity with basic statistical mechanics and molecular dynamics methods will be assumed.

Perez, Danny [Los Alamos National Laboratory

2011-01-04T23:59:59.000Z

483

Fluid Bed Combustion Applied to Industrial Waste  

E-Print Network [OSTI]

of its relatively recent application to coal fired steam production, fluid beds have been uti lized in industry for over 60 years. Beginning in Germany in the twenties for coal gasification, the technology was applied to catalytic cracking of heavy... system cost), use of minimum excess air required, and maintaining the min"imum reactor temperature neces sary to sustain combustion. For superautogenous fuels, where incineration. only is desired, minimum capital cost is achieved by using direct bed...

Mullen, J. F.; Sneyd, R. J.

484

Impact damping applied to MDOF structures  

E-Print Network [OSTI]

an attachment to ground. With regard to temperature constraints, previous work by Male, Kinsman [2], Moore, and Palazzolo [3] have confirmed the effectiveness of the impact damper in high and cryogenic temperature environments respectively. In consideration..., medium and high amplitude range. Moors' s work focuses on both free and forced response SDOF analyses as well as experimental investigation of impact damping applied to a rotor- bearing system operating in a cryogenic environment. Moore's thesis...

McElhaney, John Michael

1995-01-01T23:59:59.000Z

485

Apply process integration to waste minimization  

SciTech Connect (OSTI)

This article presents a systematic method for identifying process modifications to minimize waste generation. It is based on the hierarchical decision procedure, which provides a framework for identifying process improvement options and evaluating heat and mass integration opportunities. The article deals specifically with an adaptation of the hierarchical decision approach for use in pollution abatement applications. The article also illustrates the use of the technique by applying it to the fluid catalytic cracking unit at Amoco Oil Co.'s Yorktown, VA, refinery.

Rossiter, A.P.; Spriggs, H.D. (Linnhoff March, Inc., Leesburg, VA (United States)); Klee, H. Jr. (Amoco Corp., Chicago, IL (United States))

1993-01-01T23:59:59.000Z

486

Abstract--Principal component analysis (PCA) is a commonly applied technique for data analysis and processing,  

E-Print Network [OSTI]

Institute "Nikola Tesla", Belgrade, Serbia (phone: +81-3-7734-2699; fax: +81-3-7734-2699; e-mail: marko@ sg

Sugiyama, Masashi

487

Sensitivity analysis in linear programming applied to the problems of activation analysis  

E-Print Network [OSTI]

results were right-nand-side ranging and the assigning to the obJective function a ratio of cost coefficients so each charnel assume as much importance in fitting a curve to the Activation Analvsis data as any other channel iv A CKii0'1LZD GM!'. ITS... CHAPTER III DATA DIFFERENCES AND THE ZFFECTS OF CHANNEL SUMMING CHAPTER IV PROCEDURE QF RIGHT-HAND-SIDE RANGI NG 16 CHAPTER V RATIO COST COEFFICIENTS PROCEDURE CHAPTER VI ANALYS1S GF OUTPUT TO DETERMINE SEIISITIVITY CHAPTER VII UNIFORM VARIATIONS...

Sloan, Thomas Orville

1969-01-01T23:59:59.000Z

488

IJOPE Paper No JC-343AB-final 9/26/04 Biausser Page number 1 Numerical Analysis of the Internal Kinematics and Dynamics of 3D Breaking Waves on Slopes  

E-Print Network [OSTI]

Kinematics and Dynamics of 3D Breaking Waves on Slopes Benjamin Biausser1 , Stéphan T. Grilli2 , Philippe and internal kinematics (velocity, vorticity, pressure) are presented. KEY WORDS: breaking ocean waves years, our understanding of wave breaking dynamics and kinematics is still quite incomplete. Due

Grilli, Stéphan T.

489

A probability current analysis of energy transport in open quantum systems  

E-Print Network [OSTI]

We introduce a probability current analysis of excitation energy transfer between states of an open quantum system. Expressing the energy transfer through currents of excitation probability between the states in a site representation enables us to gain key insights into the energy transfer dynamics. It allows to, i) identify the pathways of energy transport in large networks of sites and to quantify their relative weights, ii) quantify the respective contributions of unitary dynamics, dephasing, and relaxation/dissipation processes to the energy transfer, and iii) quantify the contribution of coherence to the energy transfer. Our analysis is general and can be applied to a broad range of open quantum system descriptions (with coupling to non-Markovian environments) in a straightforward manner.

Jan J. J. Roden; K. Birgitta Whaley

2015-01-24T23:59:59.000Z

490

Numerical Analysis of Dynamical Systems John Guckenheimer  

E-Print Network [OSTI]

. Interesting examples from diverse applications infuse the subject and establish mathematical connections

Guckenheimer, John

491

Analysis & Simulation of Dynamics in Supercooled Liquids  

E-Print Network [OSTI]

Moreover, the heat capacity of that liquid is also higherthe intensive heat capacities of the liquid and the crystal,

Elmatad, Yael Sarah

2011-01-01T23:59:59.000Z

492

4, 24612496, 2007 Dynamic analysis of  

E-Print Network [OSTI]

of stream reaches in native forest, exotic pine, and pasture in the steep hills of the Hakarimata Ranges). Much of the pastoral land use is on hill country, including extensive grazing on steep land. Studies

Paris-Sud XI, Université de

493

Analysis of Stochastic Dual Dynamic Programming Method  

E-Print Network [OSTI]

[12] M.V.F. Pereira, Optimal stochastic operations scheduling of large hydroelectric systems, In- ternational Journal of Electric Power and Energy Systems, 3, ...

2010-05-29T23:59:59.000Z

494

Asymptotic analysis of singularly perturbed dynamical systems  

E-Print Network [OSTI]

N ), S = diag{-a, . . . , -a}, M = diag{-µ1, . . . , -µN }, C = {kij}1i,jN . Here ni is the population density Sciences University of KwaZulu-Natal, Durban, South Africa e-mail:banasiak@ukzn.ac.za Contents 1 What . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 5 Hydrodynamic limit­the sole equation 22 5.1 Age structured population model

Paris-Sud XI, Université de

495

Dynamic stability margin analysis on SRAM  

E-Print Network [OSTI]

%....................... 41 3-14 (a) V th1 and V th3 Increase By 33%; (b)V th1 and V th3 Decrease By 33%; (c) K1 and K3 Increase By 20%; (d) K1 and K3 Decrease By 20% ........ 42 3-15 Example of 0th Order Effect on Symmetrical Change on Multiple Pairs...; (b) 80..................................... 48 3-20 Varying Only K Values When n is (a) 20; (b) 40; (c) 60; (d) 80. .............. 48 3-21 Varying V th and K Values at n=70. ............................................................ 49 4...

Ho, Yenpo

2009-05-15T23:59:59.000Z

496

MULTISCALE ANALYSIS IMPLIES STRONG DYNAMICAL LOCALIZATION  

E-Print Network [OSTI]

localized region), E n k� \\Lambda 1 j(H(!))� \\Lambda 2 k o Ÿ kjk1 \\Delta dist(\\Lambda 1 ; \\Lambda 2 ) \\Gamma

Stollmann, P.

497

Nonlinear Stochastic Analysis of Motorcycle Dynamics.  

E-Print Network [OSTI]

??Off-road and racing motorcycles require a particular setup of the suspension to improve the comfort and the safety of the rider. Further, due to ground… (more)

Robledo Ricardo, Luis

2013-01-01T23:59:59.000Z

498

Global Dynamics in Galactic Triaxial Systems I  

E-Print Network [OSTI]

In this paper we present a theoretical analysis of the global dynamics in a triaxial galactic system using a 3D integrable Hamiltonian as a simple representation. We include a thorough discussion on the effect of adding a generic non--integrable perturbation to the global dynamics of the system. We adopt the triaxial Stackel Hamiltonian as the integrable model and compute its resonance structure in order to understand its global dynamics when a perturbation is introduced. Also do we take profit of this example in order to provide a theoretical discussion about diffussive processes taking place in phase space.

Pablo M. Cincotta; Claudia M. Giordano; Josefa Perez; .

2006-04-21T23:59:59.000Z

499

Computational fluid dynamic applications  

SciTech Connect (OSTI)

The rapid advancement of computational capability including speed and memory size has prompted the wide use of computational fluid dynamics (CFD) codes to simulate complex flow systems. CFD simulations are used to study the operating problems encountered in system, to evaluate the impacts of operation/design parameters on the performance of a system, and to investigate novel design concepts. CFD codes are generally developed based on the conservation laws of mass, momentum, and energy that govern the characteristics of a flow. The governing equations are simplified and discretized for a selected computational grid system. Numerical methods are selected to simplify and calculate approximate flow properties. For turbulent, reacting, and multiphase flow systems the complex processes relating to these aspects of the flow, i.e., turbulent diffusion, combustion kinetics, interfacial drag and heat and mass transfer, etc., are described in mathematical models, based on a combination of fundamental physics and empirical data, that are incorporated into the code. CFD simulation has been applied to a large variety of practical and industrial scale flow systems.

Chang, S.-L.; Lottes, S. A.; Zhou, C. Q.

2000-04-03T23:59:59.000Z

500

SMACS. Probabilistic Seismic Analysis System  

SciTech Connect (OSTI)

The SMACS (Seismic Methodology Analysis Chain with Statistics) system of computer programs is one of the major computational tools of the U.S. NRC Seismic Safety Margins Research Program (SSMRP). SMACS is comprised of the core program SMAX, which performs the SSI response analyses, five preprocessing programs, and two postprocessors. The preprocessing programs include: GLAY and CLAN, which generate the nominal impedance matrices and wave scattering vectors for surface-founded structures; INSSIN, which projects the dynamic properties of structures to the foundation in the form of modal participation factors and mass matrices; SAPPAC, which projects the dynamic and pseudostatic properties of multiply-supported piping systems to the support locations, and LNGEN, which can be used to generate the multiplication factors to be applied to the nominal soil, structural, and subsystem properties for each of the response calculations in accounting for random variations of these properties. The postprocessors are: PRESTO, which performs statistical operations on the raw data from the response vectors that SMAX produces to calculate best fit lognormal distributions for each response location, and CHANGO, which manipulates the data produced by PRESTO to produce other results of interest to the user. Also included is the computer program SAP4 (a modified version of the University of California, Berkeley SAPIV program), a general linear structural analysis program used for eigenvalue extractions and pseudostatic mode calculations of the models of major structures and subsystems. SAP4 is used to prepare input to the INSSIN and SAPPAC preprocessing programs. The GLAY and CLAN programs were originally developed by J.E. Luco (UCSD) and H.L. Wong (USC).

Johnson, J.J.; Maslenikov, O.R.; Tiong, L.W.; Mraz, M.J. [EQE Incorporated, San Ramon, CA (United States); Bumpus, S.; Gerhard, M.A. [Lawrence Livermore National Lab., CA (United States)

1992-01-14T23:59:59.000Z