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


1

Subcellular metabolic organization in the context of dynamic energy budget and biochemical systems theories  

Science Journals Connector (OSTI)

...metabolites, energy compounds and...engineering. New York, NY: Marcel...cellular systems. New York, NY: Chapman...2010 Dynamic energy budget theory...biologists. New York, NY: Cambridge...context of dynamic energy budget and biochemical...

2010-01-01T23:59:59.000Z

2

Optimization of biochemical systems through mathematical programming: Methods and applications  

Science Journals Connector (OSTI)

In this work we present a general (mono and multiobjective) optimization framework for the technological improvement of biochemical systems. The starting point of the method is a mathematical model in ordinary differential equations (ODEs) of the investigated ... Keywords: Biochemical systems, Generalized mass action, Geometric programming, Linear programming, Multiobjective optimization, Power-law formalism, S-systems

Julio Vera; Carlos González-Alcón; Alberto Marín-Sanguino; Néstor Torres

2010-08-01T23:59:59.000Z

3

Equilibrium distributions of simple biochemical reaction systems for time-scale separation in stochastic reaction networks  

Science Journals Connector (OSTI)

...biochemical reaction systems for time-scale...for Biological Systems Analysis (ZBSA), University...Electrical and Computer Engineering, University...quasi-steady-state analysis: it is assumed...simple biochemical systems, such as enzymatic...

2014-01-01T23:59:59.000Z

4

Recent developments in parameter estimation and structure identification of biochemical and genomic systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Recent Recent developments in parameter estimation and structure identification of biochemical and genomic systems I-Chun Chou * , Eberhard O. Voit Integrative BioSystems Institute and The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, 313 Ferst Drive, Atlanta, GA 30332, USA a r t i c l e i n f o Article history: Received 2 October 2008 Received in revised form 6 March 2009 Accepted 15 March 2009 Available online 25 March 2009 Keywords: Parameter estimation Network identification Inverse modeling Biochemical Systems Theory a b s t r a c t The organization, regulation and dynamical responses of biological systems are in many cases too com- plex to allow intuitive predictions and require the support of mathematical modeling for quantitative assessments and a reliable understanding of system functioning. All steps of constructing

5

Development of a system for characterizing biomass quality of lignocellulosic feedstocks for biochemical conversion.  

E-Print Network (OSTI)

??The purpose of this research was twofold: (i) to develop a system for screening lignocellulosic biomass feedstocks for biochemical conversion to biofuels and (ii) to… (more)

Murphy, Patrick Thomas

2009-01-01T23:59:59.000Z

6

Quantum proof systems and entanglement theory  

E-Print Network (OSTI)

Quantum complexity theory is important from the point of view of not only theory of computation but also quantum information theory. In particular, quantum multi-prover interactive proof systems are defined based on ...

Abolfathe Beikidezfuli, Salman

2009-01-01T23:59:59.000Z

7

A Credibility Theory for Automobile Bonus Systems  

E-Print Network (OSTI)

R. Norberg A Credibility Theory for Automobile Bonus Systems Reprinted from Scandinaviun Actuarial Journal, 1976 #12;Scand. Actuarial J. 1976:92-107 A CredibilityTheory for Automobile Bonus Systems rating systems of the bonus type, commonly used in automobile insurance. On the basis of a simple model

Maume-Deschamps, Véronique

8

Hamilton-Jacobi Theory and Superintegrable Systems .  

E-Print Network (OSTI)

??Hamilton-Jacobi theory provides a powerful method for extracting the equations of motion out of some given systems in classical mechanics. On occasion it allows some… (more)

Armstrong, Craig Keith

2007-01-01T23:59:59.000Z

9

BISEN: Biochemical Simulation Environment  

Science Journals Connector (OSTI)

......how to use MATLAB to generate...265 lines of MATLAB code compute...networks. In Chemical Biophysics...of Cellular Processes. (2008...Supplementary Data 1 - pdf file BISEN: Biochemical Simulation Environment...systems in the MATLAB computing......

J. Vanlier; F. Wu; F. Qi; K. C. Vinnakota; Y. Han; R. K. Dash; F. Yang; D. A. Beard

2009-03-15T23:59:59.000Z

10

DENSITY FUNCTIONAL THEORY OF FIELD THEORETICAL SYSTEMS  

E-Print Network (OSTI)

DENSITY FUNCTIONAL THEORY OF FIELD THEORETICAL SYSTEMS E. Engel Inst. fur Theor. Physik background of relativistic density functional theory is emphasized and its consequences for relativistic Kohn-Sham equations are shown. The local density approximation for the exchange energy functional is reviewed

Engel, Eberhard

11

The Theory of Random Laser Systems  

SciTech Connect

Studies of random laser systems are a new direction with promising potential applications and theoretical interest. The research is based on the theories of localization and laser physics. So far, the research shows that there are random lasing modes inside the systems which is quite different from the common laser systems. From the properties of the random lasing modes, they can understand the phenomena observed in the experiments, such as multi-peak and anisotropic spectrum, lasing mode number saturation, mode competition and dynamic processes, etc. To summarize, this dissertation has contributed the following in the study of random laser systems: (1) by comparing the Lamb theory with the Letokhov theory, the general formulas of the threshold length or gain of random laser systems were obtained; (2) they pointed out the vital weakness of previous time-independent methods in random laser research; (3) a new model which includes the FDTD method and the semi-classical laser theory. The solutions of this model provided an explanation of the experimental results of multi-peak and anisotropic emission spectra, predicted the saturation of lasing modes number and the length of localized lasing modes; (4) theoretical (Lamb theory) and numerical (FDTD and transfer-matrix calculation) studies of the origin of localized lasing modes in the random laser systems; and (5) proposal of using random lasing modes as a new path to study wave localization in random systems and prediction of the lasing threshold discontinuity at mobility edge.

Xunya Jiang

2002-06-27T23:59:59.000Z

12

A multicenter study demonstrating discordant results from electronic prostate-specific antigen biochemical failure calculation systems  

SciTech Connect

Purpose: To evaluate the interobserver variation of four electronic biochemical failure (bF) calculators using three bF definitions. Methods and Materials: The data of 1200 men were analyzed using the electronic bF calculators of four institutions. Three bF definitions were examined for their concordance of bF identification across the centers: the American Society for Therapeutic Radiology and Oncology consensus definition (ACD), the lowest prostate-specific antigen (PSA) level to date plus 2 ng/mL (L2), and a threshold of 3 ng/mL (T3). Results: Unanimous agreement regarding bF status using the ACD, L2, and T3 definitions occurred in 87.3%, 96.4%, and 92.7% of cases, respectively. Using the ACD, 63% of the variation was from one institution, which allowed the bF status to be reversed if a PSA decline was seen after bF (PSA 'bounce'). A total of 270 men had an ACD bF time variation of >2 months across the calculators, and the 5-year freedom from bF rate was 49.8-60.9%. The L2 definition had a 20.5% rate of calculated bF times; which varied by >2 months (median, 6.4; range, 2.1-75.6) and a corresponding 5-year freedom from bF rate of 55.9-61.0%. The T3 definition had a 2.0% range in the 5-year freedom from bF. Fifteen definition interpretation variations were identified. Conclusion: Reported bF results vary not only because of bF definition differences, but because of variations in how those definitions are written into computer-based calculators, with multiple interpretations most prevalent for the ACD. An algorithm to avoid misinterpretations is proposed for the L2 definition. A verification system to guarantee consistent electronic bF results requires development.

Williams, Scott G. [Peter MacCallum Cancer Centre and University of Melbourne, Melbourne (Australia)]. E-mail: scott.williams@petermac.org; Pickles, Tom [British Columbia Cancer Agency, Vancouver, BC (Canada); Kestin, Larry [William Beaumont Hospital, Royal Oak, MI (United States); Potters, Louis [New York Prostate Institute, South Nassau Communities Hospital, Oceanside, NY (United States); Fearn, Paul [New York Prostate Institute, South Nassau Communities Hospital, Oceanside, NY (United States); Smith, Ryan [William Buckland Radiotherapy Centre, The Alfred Hospital, Melbourne (Australia); Pratt, Gary [Division of Oncology, Royal Brisbane Hospital, Brisbane (Australia)

2006-08-01T23:59:59.000Z

13

Time Dependent Density Functional Theory Application to Extended Systems  

E-Print Network (OSTI)

Time Dependent Density Functional Theory Application to Extended Systems Francesco Sottile Facility (ETSF) Donostia, 25 July 2007 Time Dependent Density Functional Theory Francesco Sottile #12 Density Functional Theory Francesco Sottile #12;Linear Periodic systems ALDA The Quest for the Holy

Botti, Silvana

14

Dose-Dependent Biochemical Changes in Rat Central Nervous System after 12-Week Exposure to 1-Bromopropane  

Science Journals Connector (OSTI)

1-Bromopropane is used as a cleaning agent or adhesive solvent in the workplace. The present study investigated the long-term effects of exposure to 1-bromopropane on biochemical components in the central nervous system (CNS) of rats. Four groups, each of nine male Wistar rats, were exposed to 200, 400, or 800 ppm 1-bromopropane or fresh air only, 8 h per day, 7 days a week for 12 weeks. We measured the levels of neuron-specific ?-enolase, glia-specific ?-S100 protein, creatine kinase (CK) subunits B and M, heat shock protein Hsp27 (by enzyme immunoassay), enzymatic activity of CK and levels of glutathione (GSH), oxidized glutathione (GSSG) and sulfhydrul (SH) base in the cerebrum, cerebellum, brainstem and spinal cord. ?-Enolase decreased dose-dependently in the cerebrum, which showed a decrease in wet weight, at 400 ppm or over, but no change was noted in ?-S100 protein in any brain region or spinal cord. Hsp27 decreased in the cerebellum, brainstem and spinal cord. Protein-bound SH base, non-protein SH base and total glutathione decreased in every brain region. CK activity decreased dose-dependently at 200 ppm or over, and the ratio of CK activity to CK-B concentration tended to decrease in all regions. The decrease in ?-enolase in the cerebrum suggests the involvement of biochemical changes in neurons with decrease in the wet weight of the cerebrum. Glutathione depletion and changes in proteins containing SH base as a critical site might be the underlying neurotoxic mechanism of 1-bromopropane. The biochemical changes in the cerebrum indicate that long-term exposure to 1-bromopropane has effects on the CNS.

Hailan Wang; Gaku Ichihara; Hidenori Ito; Kanefusa Kato; Junzoh Kitoh; Tetsuya Yamada; Xiaozhong Yu; Seiji Tsuboi; Yoshinori Moriyama; Yasuhiro Takeuchi

2003-01-01T23:59:59.000Z

15

Abstract: Boussinesq systems -- derivation and the linear theory  

E-Print Network (OSTI)

Boussinesq equations and other systems for small-amplitude long waves in nonlinear dispersive media. Part II: the nonlinear theory.

16

Development in structural systems reliability theory  

Science Journals Connector (OSTI)

This paper is concerned with two topics on structural systems reliability theory. One covers automatic generation of failure mode equations, identifications of stochastically dominant failure modes, and reliability assessment of redundant structures. Reduced stiffness matrixes and equivalent nodal forces representing the failed elements are introduced for expressing the safety margins of the elements, using a matrix method. Dominant failure modes are systematically selected by a branch-and-bound technique and heuristic operations. The other discusses the various optimum design problems based on reliability concept. Those problems are interpreted through a solution to a multi-objective optimization problem.

Y. Murotsu

1986-01-01T23:59:59.000Z

17

Electronic excitations in complex systems: beyond density functional theory  

E-Print Network (OSTI)

Electronic excitations in complex systems: beyond density functional theory for real materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 3 Time-dependent density functional theory 19 3.1 The Runge-Gross theorem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 4 Model kernels from many-body perturbation theory 29 4.1 Time-dependent density functional theory

Botti, Silvana

18

StochDecomp—Matlab package for noise decomposition in stochastic biochemical systems  

Science Journals Connector (OSTI)

......solved using the Matlab ODE solver...Analysis (PUA) Matlab package (Vanlier...and integrative Matlab package for computational...al. Detailed simulations of cell biology...in mesoscopic chemical systems. Nat...Stochastic Processes in Physics and...Supplementary Data - pdf file Supplementary......

Tomasz Jetka; Agata Charzynska; Anna Gambin; Michael P.H. Stumpf; Michal Komorowski

2014-01-01T23:59:59.000Z

19

Accessible methods for the dynamic time-scale decomposition of biochemical systems  

Science Journals Connector (OSTI)

......simulated with Matlab is 102. 3...with the direct simulation of the corresponding...DAE system with Matlab. Figure 6 shows...Computing in Chemical Engineering...slowly oscillating processes: the circadian...In: Winter Simulation Conference 2006...Supplementary Data - pdf file Supplementary......

Irina Surovtsova; Natalia Simus; Thomas Lorenz; Artjom König; Sven Sahle; Ursula Kummer

2009-11-01T23:59:59.000Z

20

Biochemical Screening of Pyrimidine Antimetabolites: I. Systems with Oxidative Energy Source  

Science Journals Connector (OSTI)

...Systems with Oxidative Energy Source* JOSEPHE. STONEANDVANR...to the uridine nucleo tides. Normal rat liver cytoplasm...furnished the source of energy for the reactions. A...of an agent upon the energy source, the absolute...ics to uridine nucleo- tides, could be used for production...

Joseph E. Stone and Van R. Potter

1956-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

Massively-Parallel Simulation of Biochemical Systems Jens Ackermann Paul Baecher Thorsten Franzel  

E-Print Network (OSTI)

derivatives, and computing standard measures of complex dynamics like the Lyapunov exponent. 1 Introduction paradigms. Our system can automatically compile standard SBML files into CUDA code, using analytic]. Such parameter spaces are generally high-dimensional and pose therefore a difficult optimization problem [Ham05

Goesele, Michael

22

Towards a Hamilton-Jacobi Theory for Nonholonomic Mechanical Systems  

E-Print Network (OSTI)

In this paper we obtain a Hamilton-Jacobi theory for nonholonomic mechanical systems. The results are applied to a large class of nonholonomic mechanical systems, the so-called \\v{C}aplygin systems.

D. Iglesias; M. de Leon; D. Martin de Diego

2007-05-25T23:59:59.000Z

23

Abstract: Boussinesq systems -- derivation and the linear theory  

E-Print Network (OSTI)

Boussinesq equations and other systems for small-amplitude long waves in nonlinear dispersive media. Part I: derivation and the linear theory ...

24

Effect of decimeter waves on functional state of cardiovascular system, some biochemical and immunological parameters of patients recovering from myocardial infarction  

SciTech Connect

Optimum localization of decimeter wave (DMW) treatment and its intensity was determined to investigate the effect of DMW on functional state of the cardiovascular system, and clinical biochemical parameters of patients with myocardial infarction in the early posthospitalization period. It is assumed that the effect of DMW via the segmented autonomic system leads to marked changes in the systems. With delivery of treatment to the DI-DV region, the effect on the heart occurs first through the autonomic nervous system which is shown by its vagotropic effect.

Sorokina, Y.I.; Poshkus, N.B.; Tupitsina, Y.Y.; Volkova, L.P.; Shubina, A.V.; Krasnikov, V.Y.

1983-06-01T23:59:59.000Z

25

Game Theory and Decision Theory in Multi-Agent Systems Simon Parsons (s.d.parsons@csc.liv.ac.uk)  

E-Print Network (OSTI)

Game Theory and Decision Theory in Multi-Agent Systems Simon Parsons (s the agent community in the use of techniques from decision theory and game theory. Our aims in this article are firstly to briefly summarise the key concepts of decision theory and game theory, secondly to discuss how

Parsons, Simon

26

The role of theory in gender and information systems research  

Science Journals Connector (OSTI)

In response to claims emanating from recent assessments of the status of gender and IS research about insufficient theorizing of gender, a critical literature analysis of research papers on the topic of gender and IS that appeared in information systems ... Keywords: Diversity, Feminism, Gay, Gender, Gender and information systems theory, Gender differences, Gender hegemony, Gender imbalance, Gender theory, IS workforce, Lesbian, Masculinity, Sex, Sexuality, Social inclusion, Theory, Transgender

Eileen M. Trauth

2013-10-01T23:59:59.000Z

27

Conference and Journal Publications in Database Systems and Theory  

E-Print Network (OSTI)

Conference and Journal Publications in Database Systems and Theory This document rates the conferences and journal publications in the database area with respect to quality and impact. As in many other systems and the database theory areas. A key issue we address is the relative importance of conference

Zhou, Yuanyuan

28

On the Hamilton-Jacobi Theory for Singular Lagrangian Systems  

E-Print Network (OSTI)

We develop a Hamilton-Jacobi theory for singular lagrangian systems using the Gotay-Nester-Hinds constraint algorithm. The procedure works even if the system has secondary constraints.

Manuel de León; Juan Carlos Marrero; David Martín de Diego; Miguel Vaquero

2012-04-27T23:59:59.000Z

29

What is "system": some decoherence-theory arguments  

E-Print Network (OSTI)

We discuss the possibility of making the {\\it initial} definitions of mutually different (possibly interacting, or even entangled) systems in the context of decoherence theory. We point out relativity of the concept of elementary physical system as well as point out complementarity of the different possible divisions of a composite system into "subsystems", thus eventually sharpening the issue of 'what is system'.

Miroljub Dugic

2005-09-30T23:59:59.000Z

30

Biochem. J.  

NLE Websites -- All DOE Office Websites (Extended Search)

29, 29, 533-543 (Printed in Great Britain) doi:10.1042/BJ20100238 533 Identification of a novel UDP-sugar pyrophosphorylase with a broad substrate specificity in Trypanosoma cruzi Ting YANG*† and Maor BAR-PELED†‡ 1 *Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA 30602, U.S.A., †Complex Carbohydrate Research Center (CCRC), University of Georgia, Athens, GA 30602, U.S.A., and ‡Department of Plant Biology, University of Georgia, Athens, GA 30602, U.S.A. The diverse types of glycoconjugates synthesized by trypanoso- matid parasites are unique compared with the host cells. These glycans are required for the parasite survival, invasion or evasion of the host immune system. Synthesis of those glycoconjugates requires a constant supply of nucleotide-sugars (NDP-sugars), yet little is known about how these NDP-sugars are made

31

Renormalization-group theory of correlated electron systems  

E-Print Network (OSTI)

The thesis applies position-space renormalization-group theory to a variety of correlated electron systems, determining finite-temperature phase diagrams and thermodynamic properties for electron densities both at and away ...

Hinczewski, Michael, 1979-

2005-01-01T23:59:59.000Z

32

An Investigation of the Complex Motions Inherent to Machining Systems via a Discontinuous Systems Theory Approach  

E-Print Network (OSTI)

AN INVESTIGATION OF THE COMPLEX MOTIONS INHERENT TO MACHINING SYSTEMS VIA A DISCONTINUOUS SYSTEMS THEORY APPROACH A Dissertation by BRANDON CHRISTOPHER GEGG Submitted to the Office of Graduate Studies... SYSTEMS VIA A DISCONTINUOUS SYSTEMS THEORY APPROACH A Dissertation by BRANDON CHRISTOPHER GEGG Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree...

Gegg, Brandon C.

2010-07-14T23:59:59.000Z

33

The role of theory in gender and information systems research  

Science Journals Connector (OSTI)

Abstract In response to claims emanating from recent assessments of the status of gender and IS research about insufficient theorizing of gender, a critical literature analysis of research papers on the topic of gender and IS that appeared in information systems journals between 1992 and 2012 was undertaken. While some research about gender and IS explicitly employs or develops gender theory, other research that claims to be about gender does not explicitly employ any gender theory to interpret research findings, relying, instead, on implicit gender essentialism as a theory-in-use. Research papers about gender and IS that do not explicitly employ gender theory typically use another IS or management theory as the sensitizing device to interpret the data. Still other research papers are gender atheoretical insofar as neither explicit nor implicit gender theorizing is evident in the papers. In gender and IS research, as in all research, gender theory can be used as a lens to guide the collection, analysis and interpretation of data — whether conducted with a positivist, interpretive or critical epistemology. Alternatively, gender theory can be used to interpret findings when gender is a factor that (expectedly or unexpectedly) results from a larger analysis. Finally, gender theory can result, inductively, from the data by means of grounded theory methods. In any case, the use of theory is to be directed toward understanding the phenomenon of gender in the context of IS (analyzing, explaining), establishing causality (predicting) or guiding action (design and action). This analysis of the role of theory in gender and IS research offers recommendations about the conduct of gender and IS research going forward.

Eileen M. Trauth

2013-01-01T23:59:59.000Z

34

Density functional theory for self-bound systems  

E-Print Network (OSTI)

The density functional theory is extended to account for self-bound systems. To this end the Hohenberg-Kohn theorem is formulated for the intrinsic density and a Kohn-Sham like procedure for an $N$--body system is derived using the adiabatic approximation to account for the center of mass motion.

Nir Barnea

2007-11-06T23:59:59.000Z

35

ON THE ERGODIC THEORY OF DISCRETE DYNAMICAL SYSTEMS  

E-Print Network (OSTI)

a class of measures, called harmonic mea- sures, that one can associate to a dynamical system consisting is infinite cyclic, then these measures are invariant. We show how the theory of classical dynamical systems with invariant measure can be extended to the case of harmonic measure. Other properties of harmonic measures

Candel, Alberto

36

Correlations in Many Electron Systems: Theory and Applications  

E-Print Network (OSTI)

In this contribution we present calculations performed for interacting electron systems within a non-perturbative formulation of the cluster theory. Extrapolation of the model to describe the time dependence of the interacting systems is feasible and planed. The theory is based on the unitary operator $e^{iS}$ ({\\it S} is the correlation operator) formalism which, in this paper, is treated non perturbatively within many-particle correlations. The application of the derived equations to few-body systems is realized in terms of Generalized Linearization Approximations (GLA) and via the Cluster Factorization Theory (CFT). To check the reliability of the model we present two different applications. In the first we evaluate the transitions energies in Helium-, Lithium-, Beryllium-, and Boron-like Oxygen. The calculation aims to a precise determination of the satellite transitions which play an important role in plasma diagnostics. In a second we investigate a non-perturbative method to evaluate the charge radii of...

Tomaselli, M; Kühl, T; Ursescu, D

2006-01-01T23:59:59.000Z

37

Quantum decoherence in the theory of open systems  

E-Print Network (OSTI)

In the framework of the Lindblad theory for open quantum systems, we determine the degree of quantum decoherence of a harmonic oscillator interacting with a thermal bath. It is found that the system manifests a quantum decoherence which is more and more significant in time. We calculate also the decoherence time scale and analyze the transition from quantum to classical behaviour of the considered system.

A. Isar

2007-04-25T23:59:59.000Z

38

Theory of Many-Particle Systems. I  

Science Journals Connector (OSTI)

This is the first of a series of papers dealing with many-particle systems from a unified, nonperturbative point of view. It contains derivations and discussions of various field-theoretical techniques which will be applied in subsequent papers. In a short introduction the general method of approach is summarized, and its relationship to other field-theoretic problems indicated. In the second section the macroscopic properties of the spectra of many-particle systems are described. Asymptotic evaluations are performed which characterize these macroscopic features in terms of intensive parameters, and the relationship of these parameters to thermodynamics is discussed. The special characteristics of the ground state are shown to follow as a limiting case of the asymptotic evaluations. The third section is devoted to the time-dependent field correlation functions, or Green's functions, which describe the microscopic behavior of a multiparticle system. These functions are defined, and related to intensive macroscopic variables when the energy and number of particles are large. Spectral representations and other properties of various one-particle Green's functions are derived. In the fourth section the treatment of non-equilibrium processes is considered. As a particular example, the electromagnetic properties of a system are expressed in terms of the special two-particle Green's function which describes current correlation. The discussion yields specifically a fluctuation-dissipation theorem, a sum rule for conductivity, and certain dispersion relations. The fifth section deals with the differential equations which determine the Green's functions. The boundary conditions that characterize the Green's function equations are exhibited without reference to adiabatic decoupling. A method for solving the equations approximately, by treating the correlations among successively larger numbers of particles, is considered. The first approximation in this sequence is shown to yield a generalized Hartree-like equation. A related, but rigorous, identity for the single-particle Green's function is then derived. A second approximation, which takes certain two-particle correlations into account, is shown to produce various additional effects: The interaction between particles is altered in a manner characterized by the intensive macroscopic parameters, and the modification and spread of the energy-momentum relation come into play. In the final section compact formal expressions for the Green's functions and other physical quantities are derived. Alternative equations and systematic approximations for the Green's functions are obtained.

Paul C. Martin and Julian Schwinger

1959-09-15T23:59:59.000Z

39

Theory of System Level Efficiency in Health Care  

Science Journals Connector (OSTI)

Abstract Systems level efficiency concerns understanding how well a health system uses the resources at its disposal to improve health and secure related health system objectives. This article first introduces the concept of a health system. It then considers the theory behind systems level efficiency and related concepts such as productivity, technical and allocative efficiency, and goes on to assess the key challenges and debates faced in this area of research. The article relates these theoretical concepts back to health policy to indicate the types of questions that might be considered in any analysis of technical or allocative efficiency.

I. Papanicolas; P.C. Smith

2014-01-01T23:59:59.000Z

40

Purity of states in the theory of open quantum systems  

E-Print Network (OSTI)

The condition of purity of states for a damped harmonic oscillator is considered in the framework of Lindblad theory for open quantum systems. For a special choice of the environment coefficients, the correlated coherent states are shown to be the only states which remain pure all the time during the evolution of the considered system. These states are also the most stable under evolution in the presence of the environment.

A. Isar

2006-04-28T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

Quantitative training system assessments using General Systems Performance Theory  

E-Print Network (OSTI)

provides an overview of the concept of situational awareness and identifies the characteristics that are usually associated ivith a situationally aivare person. A. CBT Systems As ivas mentioned in Chapter I, there is considerable evidence [3, 4...

Kashyap, Sujatha

2000-01-01T23:59:59.000Z

42

E-Print Network 3.0 - adaptive systems theory Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

systems theory Page: << < 1 2 3 4 5 > >> 1 From Adaptive Hypermedia to the Adaptive Web Systems Summary: 1 From Adaptive Hypermedia to the Adaptive Web Systems Peter...

43

The benchmark of gutzwiller density functional theory in hydrogen systems  

SciTech Connect

We propose an approximate form of the exchange-correlation energy functional for the Gutzwiller density functional theory. It satisfies certain physical constraints in both weak and strong electron correlation limits. We benchmark the Gutzwiller density functional approximation in the hydrogen systems, where the static correlation error is shown to be negligible. The good transferability is demonstrated by applications to the hydrogen molecule and some crystal structures.

Yao, Y.; Wang, Cai-Zhuang; Ho, Kai-Ming

2012-02-23T23:59:59.000Z

44

Geometric Hamilton-Jacobi Theory for Nonholonomic Dynamical Systems  

E-Print Network (OSTI)

The geometric formulation of Hamilton--Jacobi theory for systems with nonholonomic constraints is developed, following the ideas of the authors in previous papers. The relation between the solutions of the Hamilton--Jacobi problem with the symplectic structure defined from the Lagrangian function and the constraints is studied. The concept of complete solutions and their relationship with constants of motion, are also studied in detail. Local expressions using quasivelocities are provided. As an example, the nonholonomic free particle is considered.

J. F. Cariñena; X. Gracia; G. Marmo; E. Martinez; M. C. Muñoz-Lecanda; N. Roman--Roy

2009-08-17T23:59:59.000Z

45

Theory of Rayleigh waves on paramagnetic rare-earth systems  

Science Journals Connector (OSTI)

We present calculations of the velocity changes of Rayleigh waves in cubic, paramagnetic rare-earth systems due to magnetoelastic interactions. These interactions describe the coupling of the strain and rotational part of the deformation tensor to the incomplete 4f shell. They can be influenced by applying a magnetic field. An equation is obtained which generalizes that of Stoneley for cubic systems without magnetoelastic interactions. Special attention is paid to effects resulting from the rotational interactions. The theory is applied to CeAl2 for which experiments are available.

Robert Camley and Peter Fulde

1981-03-15T23:59:59.000Z

46

Time-dependent density-functional theory for open systems  

E-Print Network (OSTI)

By introducing the self-energy density functionals for the dissipative interactions between the reduced system and its environment, we develop a time-dependent density-functional theory formalism based on an equation of motion for the Kohn-Sham reduced single-electron density matrix of the reduced system. Two approximate schemes are proposed for the self-energy density functionals, the complete second order approximation and the wide-band limit approximation. A numerical method based on the wide-band limit approximation is subsequently developed and implemented to simulate the steady and transient current through various realistic molecular devices. Simulation results are presented and discussed.

Xiao Zheng; Fan Wang; Chi Yung Yam; Yan Mo; GuanHua Chen

2007-02-27T23:59:59.000Z

47

Quantum tomography meets dynamical systems and bifurcations theory  

SciTech Connect

A powerful tool for studying geometrical problems in Hilbert spaces is developed. We demonstrate the convergence and robustness of our method in every dimension by considering dynamical systems theory. This method provides numerical solutions to hard problems involving many coupled nonlinear equations in low and high dimensions (e.g., quantum tomography problem, existence and classification of Pauli partners, mutually unbiased bases, complex Hadamard matrices, equiangular tight frames, etc.). Additionally, this tool can be used to find analytical solutions and also to implicitly prove the existence of solutions. Here, we develop the theory for the quantum pure state tomography problem in finite dimensions but this approach is straightforwardly extended to the rest of the problems. We prove that solutions are always attractive fixed points of a nonlinear operator explicitly given. As an application, we show that the statistics collected from three random orthonormal bases is enough to reconstruct pure states from experimental (noisy) data in every dimension d ? 32.

Goyeneche, D., E-mail: dardo.goyeneche@cefop.udec.cl [Departamento de Fisíca, Universidad de Concepción, Casilla 160-C, Concepción, Chile and Center for Optics and Photonics, Universidad de Concepción, Casilla 4012, Concepción (Chile); Torre, A. C. de la [Departamento de Física, Universidad Nacional de Mar del Plata, IFIMAR-CONICET, Dean Funes 3350, 7600 Mar del Plata (Argentina)

2014-06-15T23:59:59.000Z

48

Theory of plasma transport in toroidal confinement systems  

Science Journals Connector (OSTI)

The dissipation induced by coulomb-collisional scattering provides an irreducible minimum, and thus a useful standard for comparison, for transport processes in a hot, magnetically confined plasma. The kinetic description of this dissipation is provided by an equation of the Fokker-Planck form. As in the standard transport theory for a neutral gas, approximate solution of the Fokker-Planck equation permits the calculation of transport coefficients, which linearly relate the fluxes of particles, energy, and electric charge, to the density and temperature gradients, and to the electric field. The transport relations are useful in studying the confinement properties of present and future experimental devices for research in controlled thermonuclear fusion. The transport theory for a magnetized plasma (in which the Larmor radius is much smaller than gradient scale lengths describing the plasma fluid) departs from the theory for a neutral gas in several fundamental ways. Thus, transport coefficients for a magnetized plasma can be calculated even when the collisional mean free path is much longer than the gradient scale length (as would pertain in thermonuclear regimes). Such transport coefficients are generally nonlocal, being defined in terms of averages over surfaces with macroscopic dimensions. Furthermore, when the mean free path is long, the magnetized-plasma transport coefficients depend crucially upon the magnetic field geometry, the effects of which must be treated at the kinetic level of the Fokker-Planck equation. The results display several novel couplings between collisional dissipation and the electromagnetic field. The present review of magnetized-plasma transport theory is intended to be as widely accessible as possible. Thus the relevant features of magnetic confinement in closed (toroidal) systems, and of charged particles in spatially varying fields, are derived, at least in outline, from first principles. Although consideration is given to "classical" transport in which most field geometric effects are omitted, major emphasis is placed on the "neoclassical" theory which has been developed over the last decade. Neoclassical transport coefficients are specifically relevant to a magnetically confined plasma, rather than to just a magnetized plasma; their unusual features, such as nonlocality and geometry dependence, become particularly important in the high temperature regime of proposed thermonuclear reactors. The area of neoclassical theory which seems most complete—its application to axisymmetric tokamak-type confinement systems—is correspondingly stressed.

F. L. Hinton and R. D. Hazeltine

1976-04-01T23:59:59.000Z

49

Department for Analysis and Computational Number Theory Additive functions and number systems  

E-Print Network (OSTI)

Department for Analysis and Computational Number Theory Additive functions and number systems systems April 7, 2010 1 / 35 #12;Department for Analysis and Computational Number Theory Outline Number #12;Department for Analysis and Computational Number Theory Examples for number systems b Z, b -2

50

Social Choice Theory as a Foundation for Multiagent Systems  

E-Print Network (OSTI)

disciplines, namely decision theory and game theory. Decision theory provides us with tools to model as to be able to choose the best action. That is, decision theory is the right framework when we want to model that part of nature consists of other agents taking their own decisions, we enter the realms of game theory

Endriss, Ulle

51

Biochemical upgrading of oils  

DOE Patents (OSTI)

A process for biochemical conversion of heavy crude oils is provided. The process includes contacting heavy crude oils with adapted biocatalysts. The resulting upgraded oil shows, a relative increase in saturated hydrocarbons, emulsions and oxygenates and a decrease in compounds containing organic sulfur, organic nitrogen and trace metals. Adapted microorganisms which have been modified under challenged growth processes are also disclosed. 121 figs.

Premuzic, E.T.; Lin, M.S.

1999-01-12T23:59:59.000Z

52

Operator renewal theory and mixing rates for dynamical systems with infinite measure  

E-Print Network (OSTI)

Operator renewal theory and mixing rates for dynamical systems with infinite measure Ian Melbourne renewal sequences in the context of infinite ergodic theory. For large classes of dynamical systems technique, operator renewal theory, to obtain precise asymptotics and hence sharp mixing rates

53

Complexity within the Air Force acquisition system gaining insight from a theory of collapse  

E-Print Network (OSTI)

Joseph Tainter's theory of societal collapse is applied in an examination of the U.S. Air Force's aircraft acquisition system in order to gain insight into the enterprise's lagging performance. Theories of collapse at both ...

Marticello, Daniel Nicholas, Jr

2012-01-01T23:59:59.000Z

54

Thermal analysis of biochemical systems  

E-Print Network (OSTI)

Scientists, both academic and industrial, develop two main types of drugs: 1) small molecule drugs, which are usually chemically synthesized and are taken orally and 2) large molecule, biotherapeutic, or protein-based ...

McEuen, Scott Jacob

2013-01-01T23:59:59.000Z

55

Theory: Biological systems organize to maximize entropy production subject to information and biophysicochemical constraints.  

E-Print Network (OSTI)

Theory: Biological systems organize to maximize entropy production subject to information production. While organized structures decrease the entropy of the system, they are maintained by external selection produce biological systems that tend to follow a pathway of maximum entropy production

Vallino, Joseph J.

56

Operator renewal theory and mixing rates for dynamical systems with in nite measure  

E-Print Network (OSTI)

Operator renewal theory and mixing rates for dynamical systems with in#12;nite measure Ian of operator renewal sequences in the context of in#12;nite ergodic theory. For large classes of dynamical for mixing rates. Sarig [37] introduced a powerful new technique, operator renewal theory, to obtain precise

57

Systems Oriented Epistemology and Testimony Theories of testimony | A simulation model | Conclusions  

E-Print Network (OSTI)

Systems Oriented Epistemology and Testimony Theories of testimony | A simulation model.S. Zollman Carnegie Mellon University Problem of testimony Theories of testimony | A simulation model University Three views Theories of testimony | A simulation model | Conclusions The views | Two methods in SE

Zollman, Kevin

58

Reformulation of nonperturbative density-functional theories of classical nonuniform systems  

Science Journals Connector (OSTI)

It is shown that most nonperturbative density-functional theories of classical systems can be reformulated as second-order truncations of exact perturbative expansions, thus eliminating the ad hoc nature of such theories. This reformulation is used as a basis for discussion as to why some theories work better than others when applied to hard spheres, why most theories perform poorly for continuous potentials, and in what direction they might be modified so as to improve their performance.

J. F. Lutsko

1991-04-15T23:59:59.000Z

59

CALIBRATION OF EQUILIBRIUM TIDE THEORY FOR EXTRASOLAR PLANET SYSTEMS. II  

SciTech Connect

We present a new empirical calibration of equilibrium tidal theory for extrasolar planet systems, extending a prior study by incorporating detailed physical models for the internal structure of planets and host stars. The resulting strength of the stellar tide produces a coupling that is strong enough to reorient the spins of some host stars without causing catastrophic orbital evolution, thereby potentially explaining the observed trend in alignment between stellar spin and planetary orbital angular momentum. By isolating the sample whose spins should not have been altered in this model, we also show evidence for two different processes that contribute to the population of planets with short orbital periods. We apply our results to estimate the remaining lifetimes for short-period planets, examine the survival of planets around evolving stars, and determine the limits for circularization of planets with highly eccentric orbits. Our analysis suggests that the survival of circularized planets is strongly affected by the amount of heat dissipated, which is often large enough to lead to runaway orbital inflation and Roche lobe overflow.

Hansen, Brad M. S., E-mail: hansen@astro.ucla.edu [Department of Physics and Astronomy and Institute of Geophysics and Planetary Physics, University of California Los Angeles, Los Angeles, CA 90095 (United States)

2012-09-20T23:59:59.000Z

60

Energy-based analysis of biochemical cycles using bond graphs  

Science Journals Connector (OSTI)

...encouragement to embark on a new research direction...Hill, TL . 1989 Free energy transduction and biochemical cycle kinetics. New York, NY: Springer...cellular systems. New York, NY: Chapman Hall...D . 1977 Power and energy in linearized physical...

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

Existence of A Rigorous Density-Functional Theory for Open Electronic Systems  

E-Print Network (OSTI)

We prove that the electron density function of a real physical system can be uniquely determined by its values on any finite subsystem. This establishes the existence of a rigorous density-functional theory for any open electronic system. By introducing a new density functional for dissipative interactions between the reduced system and its environment, we subsequently develop a time-dependent density-functional theory which depends in principle only on the electron density of the reduced system.

Xiao Zheng; Fan Wang; GuanHua Chen

2006-05-11T23:59:59.000Z

62

Attractor Spaces as Modules: A Semi-Eliminative Reduction of Symbolic AI to Dynamic Systems Theory  

Science Journals Connector (OSTI)

I propose a semi-eliminative reduction of Fodor's concept of module to the concept of attractor basin which is used in Cognitive Dynamic Systems Theory (DST). I show how attractor basins perform the same explanatory function as modules in several DST ... Keywords: Central Pattern Generator, Dynamic Systems Theory, Fodor, GOFAI, Kelso, Mezernich and Kaas, Port, Thelen and Smith, Van Gelder, Walter Freeman, animal locomotion, attractor spaces, bifurcations, collective variable, connectionism, distributed processing, invariant sets, modularity, orbit, symbolic systems hypothesis

Teed Rockwell

2005-02-01T23:59:59.000Z

63

BOUSSINESQ SYSTEMS OF BONA-SMITH TYPE ON PLANE DOMAINS: THEORY AND NUMERICAL ANALYSIS  

E-Print Network (OSTI)

BOUSSINESQ SYSTEMS OF BONA-SMITH TYPE ON PLANE DOMAINS: THEORY AND NUMERICAL ANALYSIS V. A numerical solutions of Bona-Smith systems with analogous solutions of the BBM-BBM system. 1 Introduction In this paper we will study the Boussinesq system t + · v + · v - bt = 0, vt + + 1 2 |v|2 + c - bvt = 0, (1

Paris-Sud XI, Université de

64

Brief Review of Linear System Theory The following information is typically covered in a course on  

E-Print Network (OSTI)

on linear system theory. At ISU, EE 577 is one such course and is highly recommended for power system and cause very large oscillations that could disrupt the system. c. with k=0, the effects of the "t for power systems. Therefore, we safely assume there are no repeated roots. #12;4 Right eigenvectors

McCalley, James D.

65

A Practical Theory of Micro-Solar Power Sensor Networks JAEIN JEONG, Cisco Systems  

E-Print Network (OSTI)

9 A Practical Theory of Micro-Solar Power Sensor Networks JAEIN JEONG, Cisco Systems DAVID CULLER Reference Format: Jeong, J. and Culler, D. 2012. A practical theory of micro-solar power sensor networks planning for micro-solar power sensor networks" in Proceedings of the 7th International Conference

California at Berkeley, University of

66

Geometric Hamilton-Jacobi theory for higher-order autonomous systems  

E-Print Network (OSTI)

The geometric framework for the Hamilton-Jacobi theory is used to study this theory in the ambient of higher-order mechanical systems, both in the Lagrangian and Hamiltonian formalisms. Thus, we state the corresponding Hamilton-Jacobi equations in these formalisms and apply our results to analyze some particular physical examples.

Leonardo Colombo; Manuel de León; Pedro Daniel Prieto-Martínez; Narciso Román-Roy

2014-05-19T23:59:59.000Z

67

Systems Oriented Epistemology and Testimony Theories of testimony | A simulation model | Conclusions  

E-Print Network (OSTI)

Systems Oriented Epistemology and Testimony Theories of testimony | A simulation model | A simulation model | Conclusions Two questions What is our epistemic warrant for believing testimony? Who.S. Zollman Carnegie Mellon University Three views Theories of testimony | A simulation model | Conclusions

Zollman, Kevin

68

A Contraction Theory Approach to Singularly Perturbed Systems with Application to Retroactivity Attenuation  

E-Print Network (OSTI)

In this paper, we revisit standard results for singularly perturbed systems on the infinite time interval by employing tools from nonlinear contraction theory. This allows us to determine explicit bounds both on the rate ...

Del Vecchio, Domitilla

69

Solar System Constraints on a Cosmologically Viable $f(R)$ Theory  

E-Print Network (OSTI)

Recently, a model $f(R)$ theory is proposed \\cite{recent} which is cosmologically viable and distinguishable from $\\Lambda$CDM. We use chameleon mechanism to investigate viability of the model in terms of Solar System experiments.

Yousef Bisabr

2009-12-02T23:59:59.000Z

70

An Information Systems Security Risk Assessment Model Under Dempster- Schafer Theory of Belief Functions  

E-Print Network (OSTI)

This study develops an alternative methodology for the risk analysis of information systems security (ISS), an evidential reasoning approach under the Dempster-Shafer theory of belief functions. The approach has the ...

Sun, Lili; Srivastava, Rajendra P.; Mock, Theodore J.

2006-01-01T23:59:59.000Z

71

A Hamilton-Jacobi Theory for Singular Lagrangian Systems in the Skinner and Rusk Setting  

E-Print Network (OSTI)

We develop a Hamilton-Jacobi theory for singular lagrangian systems in the Skinner-Rusk formalism. Comparisons with the Hamilton-Jacobi problem in the lagrangian and hamiltonian settings are discussed.

Manuel de León; David Martín de Diego; Miguel Vaquero

2012-05-01T23:59:59.000Z

72

Generalizations of the Landau-Zener theory in the physics of nanoscale systems  

E-Print Network (OSTI)

Nanoscale systems have sizes intermediate between atomic and macroscopic ones. Therefore their treatment often requires a combination of methods from atomic and condensed matter physics. The conventional Landau-Zener theory, being a powerful tool...

Sinitsyn, Nikolai

2004-09-30T23:59:59.000Z

73

MINIMAL AND MAXIMAL OPERATOR SPACES AND OPERATOR SYSTEMS IN ENTANGLEMENT THEORY  

E-Print Network (OSTI)

MINIMAL AND MAXIMAL OPERATOR SPACES AND OPERATOR SYSTEMS IN ENTANGLEMENT THEORY NATHANIEL JOHNSTON-maximal operator spaces and operator systems, and investigate their relationships with the basic separability operator systems that were recently introduced and show that their cones of positive elements are exactly

Paulsen, Vern

74

Joint density-functional theory for electronic structure of solvated systems  

E-Print Network (OSTI)

We introduce a new form of density functional theory for the {\\em ab initio} description of electronic systems in contact with a molecular liquid environment. This theory rigorously joins an electron density-functional for the electrons of a solute with a classical density-functional theory for the liquid into a single variational principle for the free energy of the combined system. A simple approximate functional predicts, without any fitting of parameters to solvation data, solvation energies as well as state-of-the-art quantum-chemical cavity approaches, which require such fitting.

Sahak Petrosyan; Jean-Francois Briere; David Roundy; T. A. Arias

2007-02-09T23:59:59.000Z

75

Towards a theory for cyber-physical systems modeling  

Science Journals Connector (OSTI)

Modeling the heterogeneous composition of physical, computational and communication systems is an important challenge in engineering Cyber-Physical Systems (CPS), where the major sources of heterogeneity are causality, time semantics, and different physical ... Keywords: cyber-physical systems, formalization, heterogeneous composition, model-based engineering

Gabor Simko; Tihamer Levendovszky; Miklos Maroti; Janos Sztipanovits

2014-04-01T23:59:59.000Z

76

Theory of mesonic and dibaryonic excitations in. pi. NN systems  

SciTech Connect

Progress made in developing a ..pi..NN model for describing all NN and ..pi..d reactions up to intermediate energy regions is reported. An accurate ..pi..NN model is the starting point of developing a microscopic description of nuclear phenomena up to the energy region where pion production can occur. The model can be used to carry out many-nucleon calculations, such as the calculations of pion absorption and electroproduction of ..delta.. on nuclei. It reduces to existing nuclear theory in the low energy region. 5 refs., 6 figs.

Lee, T.S.H.

1986-08-01T23:59:59.000Z

77

GIS and Location Theory Based Bioenergy Systems Planning.  

E-Print Network (OSTI)

??This research is concerned with bioenergy systems planning and optimization modelling in the context of locating biomass power plants and allocating available biomass feedstock to… (more)

Dong, Jingyuan

2008-01-01T23:59:59.000Z

78

Solar system constraints on multifield theories of modified dynamics  

Science Journals Connector (OSTI)

......define a conserved energy-momentum tensor...modified dynamics by Solar system phenomenology...where is the usual energy-momentum tensor...frame effects to project into the Solar system via the scalar...additional term in the energy-momentum tensor......

R. H. Sanders

2006-08-11T23:59:59.000Z

79

Elements of Information Theory for Networked Control Systems  

E-Print Network (OSTI)

-scale systems using digital technology and interacting with the physical world. These include energy systems, communi- cation, and control technologies, to respond to the increased societal need to build large where the generation, transmission, and distribution of energy is made more efficient through

Franceschetti, Massimo

80

BOUSSINESQ SYSTEMS OF BONA-SMITH TYPE ON PLANE DOMAINS: THEORY AND NUMERICAL ANALYSIS  

E-Print Network (OSTI)

BOUSSINESQ SYSTEMS OF BONA-SMITH TYPE ON PLANE DOMAINS: THEORY AND NUMERICAL ANALYSIS #3; V. A of Bona-Smith systems with analogous solutions of the BBM-BBM system. 1 Introduction In this paper we will study the Boussinesq system #17; t +r #1; v +r #1; #17;v b#1;#17; t = 0; v t +r#17; + 1 2 rjvj 2 + cr#1

Recanati, Catherine

Note: This page contains sample records for the topic "biochemical systems theory" 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 contact theory for surface tension driven systems Roger A. Sauer 1  

E-Print Network (OSTI)

A contact theory for surface tension driven systems Roger A. Sauer 1 Aachen Institute for Advanced description for the contact of surface tension driven sys- tems. The example system of a liquid droplet liquids or two solids in contact. The surface kinematics, essential to the modeling of surface tension

82

Systemic risk in energy derivative markets: a graph-theory analysis  

E-Print Network (OSTI)

Systemic risk in energy derivative markets: a graph-theory analysis Delphine Lautier 1,2 and Franck condition for systemic risk to appear, this article focuses on integration in energy derivative markets, and that energy markets are becoming more and more integrated. Financial support of the French Energy Council

Paris-Sud XI, Université de

83

ON DYNAMICAL SYSTEM THEORY APPLICATION TO EARTH-SATELLITE PITCH AUTHOR: Emmanuel Osei-Frimpong -KNUST  

E-Print Network (OSTI)

ON DYNAMICAL SYSTEM THEORY APPLICATION TO EARTH-SATELLITE PITCH AUTHOR: Emmanuel Osei the dynamics of Pitch Attitude librations of an orbiting earth-satellite is discussed. This highly non linear equation of motion of the Pitch Attitude librations is transformed into a system of equations in terms

Assani, Idris

84

Towards a General Theory of Extremes for Observables of Chaotic Dynamical Systems Valerio Lucarini,  

E-Print Network (OSTI)

Towards a General Theory of Extremes for Observables of Chaotic Dynamical Systems Valerio Lucarini the geometrical properties of a chaotic dynamical system and the distribution of extreme values. We show that the extremes of so-called physical observables are distributed according to the classical generalised Pareto

85

A Wavelet Theory -Based Adaptive Trend Analysis System for Process Monitoring and Diagnosis  

E-Print Network (OSTI)

A Wavelet Theory - Based Adaptive Trend Analysis System for Process Monitoring and Diagnosis Hiranmayee Vedam Venkat Venkatasubramanian* Laboratory for Intelligent Process Systems School of Chemical-ASTRA performs process monitoring and diagnosis. The main contributions of this paper are two fold. A wavelet

Venkatasubramanian, Venkat

86

White noise distribution theory for the Fermion system  

E-Print Network (OSTI)

In this paper, we give the white noise calculus for the Fermion system and prove the Fock expansion. Each continuous linear operator on Fermionic white noise functionals is uniquely represented by the series of integral kernel operators. This series is called the Fock expansion.

Yoshihito Shimada

2005-12-09T23:59:59.000Z

87

Maps for general open quantum systems and a theory of linear quantum error correction  

E-Print Network (OSTI)

We show that quantum subdynamics of an open quantum system can always be described by a Hermitian map, irrespective of the form of the initial total system state. Since the theory of quantum error correction was developed based on the assumption of completely positive (CP) maps, we present a generalized theory of linear quantum error correction, which applies to any linear map describing the open system evolution. In the physically relevant setting of Hermitian maps, we show that the CP-map based version of quantum error correction theory applies without modifications. However, we show that a more general scenario is also possible, where the recovery map is Hermitian but not CP. Since non-CP maps have non-positive matrices in their range, we provide a geometric characterization of the positivity domain of general linear maps. In particular, we show that this domain is convex, and that this implies a simple algorithm for finding its boundary.

A. Shabani; D. A. Lidar

2009-02-14T23:59:59.000Z

88

Hamilton-Jacobi Theory for Degenerate Lagrangian Systems with Holonomic and Nonholonomic Constraints  

E-Print Network (OSTI)

We extend Hamilton-Jacobi theory to Lagrange-Dirac (or implicit Lagrangian) systems, a generalized formulation of Lagrangian mechanics that can incorporate degenerate Lagrangians as well as holonomic and nonholonomic constraints. We refer to the generalized Hamilton-Jacobi equation as the Dirac-Hamilton-Jacobi equation. For non-degenerate Lagrangian systems with nonholonomic constraints, the theory specializes to the recently developed nonholonomic Hamilton-Jacobi theory. We are particularly interested in applications to a certain class of degenerate nonholonomic Lagrangian systems with symmetries, which we refer to as weakly degenerate Chaplygin systems, that arise as simplified models of nonholonomic mechanical systems; these systems are shown to reduce to non-degenerate almost Hamiltonian systems, i.e., generalized Hamiltonian systems defined with non-closed two-forms. Accordingly, the Dirac-Hamilton-Jacobi equation reduces to a variant of the nonholonomic Hamilton-Jacobi equation associated with the reduced system. We illustrate through a few examples how the Dirac-Hamilton-Jacobi equation can be used to exactly integrate the equations of motion.

Melvin Leok; Tomoki Ohsawa; Diana Sosa

2011-09-27T23:59:59.000Z

89

Green’s-function theory of quadrupolar coupled systems  

Science Journals Connector (OSTI)

The isotropic quadrupolar coupling Hamiltonian is studied by means of double-time Green’s functions. The equations-of-motion hierarchy is decoupled by using the concepts of cumulant averages and self-consistently identifying the statistically independent operators of the system. Our results satisfy all relevant spin-1 identities. We obtain the transition temperature and the ground-state order parameter for the sc, fcc, and bcc lattices. Our result for the ground-state order parameter is larger than that obtained by current decoupling schemes.

Edward B. Brown and Philip E. Bloomfield

1985-02-01T23:59:59.000Z

90

Theory of Raman scattering in coupled electron-phonon systems  

Science Journals Connector (OSTI)

The Raman spectrum is calculated for a coupled conduction-electron–phonon system in the zero-momentum-transfer limit. The Raman scattering is due to electron-hole excitations and phonons as well. The phonons of those branches that contribute to the electron self-energy and the correction of the electron-phonon vertex are assumed to have flat energy dispersion (the Einstein phonons). The effect of electron-impurity scattering is also incorporated. Both the electron-phonon interaction and the electron-impurity interaction cause the fluctuation of the electron distribution between different parts of the Fermi surface, which results in overdamped zero-sound modes of various symmetries. The scattering cross section is obtained by solving the Bethe-Salpeter equation. The spectrum shows a lower threshold at the smallest Einstein phonon energy when only the electron-phonon interaction is taken into consideration. When impurities are also taken into consideration, the threshold disappears.

K. Itai

1992-01-01T23:59:59.000Z

91

NREL: Biomass Research - Biochemical Conversion Capabilities  

NLE Websites -- All DOE Office Websites (Extended Search)

Biochemical Conversion Capabilities Biochemical Conversion Capabilities NREL researchers are working to improve the efficiency and economics of the biochemical conversion process by focusing on the most challenging steps in the process. Biochemical conversion of biomass to biofuels involves three basic steps: Converting biomass to sugar or other fermentation feedstock through: Pretreatment Conditioning and enzymatic hydrolysis Enzyme development. Fermenting these biomass-derived feedstocks using: Microorganisms for fermentation. Processing the fermentation product to produce fuel-grade ethanol and other fuels, chemicals, heat, and electricity by: Integrating the bioprocess. Get the Adobe Flash Player to see this video. This video is a narrated animation that explains the biochemical conversion

92

Stochastic chemical enrichment in metal-poor systems I. Theory  

E-Print Network (OSTI)

A stochastic model of the chemical enrichment of metal-poor systems by core-collapse (Type II) supernovae is presented, allowing for large-scale mixing of the enriched material by turbulent motions and cloud collisions in the interstellar medium. Infall of pristine material is taken into account by following the evolution of the gas density in the medium. Analytical expressions were derived for the number of stars enriched by a given number of supernovae, as well as for the amount of mass with which the ejected material from a supernova is mixed before being locked up in a subsequently formed star. It is shown that for reasonable values of the gas density (~0.1 cm-3) and of the supernova rate (~0.25 kpc-3 Myr-1) of the Galactic halo, the resulting metallicity distributions of the extreme Population II stars show a distinct cut-off at [Fe/H] ~= -4. In fact, by assuming no low-mass Population III stars were able to form out of the primordial interstellar medium, the derived fraction of stars below [Fe/H] = -4 is in agreement with observations. Moreover, the probability is high that even the most metal-poor stars observed to date have been enriched by several contributing supernovae. This partly explains the relatively small star-to-star scatter in many chemical-abundance ratios for stars down to [Fe/H] = -4, as recently found in several observational studies. Contribution from the thermonuclear (Type Ia) supernovae is found to be negligible over almost the entire extremely metal-poor regime. (***abridged***)

T. Karlsson

2005-04-27T23:59:59.000Z

93

A COGNITIVE-SYSTEMIC RECONSTRUCTION OF MASLOW'S THEORY OF SELF-ACTUALIZATION  

E-Print Network (OSTI)

A COGNITIVE-SYSTEMIC RECONSTRUCTION OF MASLOW'S THEORY OF SELF-ACTUALIZATION by Francis Heylighen1-order, cognitive-sys- temic framework. A hierarchy of basic needs is derived from the ur- gency of perturbations: material, cognitive and subjective. Material and/or cognitive incompetence during child- hood create

Toint, Philippe

94

A constructive implementation of the Cartan-Kähler theory of exterior differential systems  

Science Journals Connector (OSTI)

An efficient algorithm for the construction of a regular chain of involutive integral elements for a general exterior differential system is presented. It is based upon the existence theorems of the Cartan-Kahler theory, and may be used to analyse partial ...

David Hartley; Robin W. Tucker

1991-12-01T23:59:59.000Z

95

Low Dose Radiation Research Program: Computational Modeling of Biochemical  

NLE Websites -- All DOE Office Websites (Extended Search)

Computational Modeling of Biochemical Pathways Linking Ionizing Computational Modeling of Biochemical Pathways Linking Ionizing Radiation to Cell Cycle Arrest, Apoptosis, and Tumor Incidence Authors: Yuchao Maggie Zhao and Rory Conolly Institutions: Center for Computational Systems Biology CIIT Centers for Health Research Long-Range Goal: To develop an integrated, computational framework for the prediction of low-dose-response to ionizing radiation (IR) in people. Methodology: To provide a flexible framework to evaluate mechanisms of cellular adaptive responses after exposure to IR, three progressively more complicated descriptions of biochemical pathways linking DNA damage with cell-cycle checkpoint control and apoptosis were developed. These descriptions focus on p53-dependent checkpoint arrest and apoptosis, p73-dependent apoptosis, and Chk2-dependent checkpoint arrest,

96

A modular microfluidic architecture for integrated biochemical analysis  

E-Print Network (OSTI)

A modular microfluidic architecture for integrated biochemical analysis Kashan A. Shaikh*, Kee Suk for review November 15, 2004) Microfluidic laboratory-on-a-chip (LOC) systems based on a mod- ular (lead) at a sensitivity of 500 nM in microfluidic breadboard

Barron, Annelise E.

97

Complete Detoxification of Short Chain Chlorinated Aliphatic Compounds: Isolation of Halorespiring Organisms and Biochemical Studies of the Dehalogenating Enzyme Systems - Final Report  

SciTech Connect

Work focused on the isolation and characterization of halorespiring populations, and the initial investigation of the dechlorinating enzyme systems. In addition, tools to evaluate the presence/activity to halorespiring populations in the environment were developed. The tools developed in this work (measurements of hydrogen consumption thresholds, molecular probes) are relevant for regulatory agencies in order to facilitate decisions on which bioremediation technology (biostimulation or bioaugmentation) is most promising at a particular site. In addition, a better understanding of the physiology of the halorespiring organisms as well as the biochemistry of the dehalogenating enzyme systems enhances our knowledge of how these organisms can successfully be employed in the bioremediation of contaminated sites.

Tiedje, J.M.

1999-10-01T23:59:59.000Z

98

Weakly interacting two-dimensional system of dipoles: Limitations of the mean-field theory  

Science Journals Connector (OSTI)

We consider a homogeneous two-dimensional Bose gas with repulsive dipole-dipole interactions. The ground-state equation of state, calculated using the diffusion Monte Carlo method, shows quantitative differences from the predictions of the commonly used Gross-Pitaevskii mean-field theory. The static structure factor, pair distribution function, and condensate fraction are calculated in a wide range of the gas parameter. Differences from mean-field theory are reflected in the frequency of the lowest “breathing” mode for harmonically trapped systems.

G. E. Astrakharchik, J. Boronat, J. Casulleras, I. L. Kurbakov, and Yu. E. Lozovik

2007-06-29T23:59:59.000Z

99

Dissipativity Theory for Hybrid Systems with Applications to Networked Control Systems.  

E-Print Network (OSTI)

?? This dissertation provides new results for energy-based analysis of systems modeled by switched or hybrid system models. This work is motivated by applications in… (more)

McCourt, Michael J.

2015-01-01T23:59:59.000Z

100

Biochemical Conversion: Using Hydrolysis, Fermentation, and Catalysis...  

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

will enable energy-efficient biochemical conversion of lignocellulosic biomass into biofuels that are compatible with today's vehicles and infrastructure. Photos (clockwise from...

Note: This page contains sample records for the topic "biochemical systems theory" 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

Objectivity or advocacy: probability theory and capital costing at the Bell System  

Science Journals Connector (OSTI)

This paper investigates the Bell Telephone System's blending of depreciation knowledge and probability theory in order to control debate before government regulators in the early 1900s. By combining statistics and accounting, Bell created a system for estimating capital cost expiration firmly grounded in mathematical science, developing methodologies which used averaging techniques to determine trends in asset life obscured by random fluctuations in actual retirements. Concurrently, complexity derived from the application of probability theory gave the telephone company significant advantages in regulatory debates. The advanced mathematics employed formed a knowledge barrier, inhibiting potential encroachments by regulators on corporate prerogatives. This study expands our understanding of the acquisition and use of knowledge within the firm by investigating advocacy's role in the development of depreciation accounting. As depreciation knowledge spread beyond Bell, regulators examined equity issues related to the firm's depreciation practices, resulting in some relatively minor changes to Bell's depreciation policies.

Deirdre M. Collier

2012-01-01T23:59:59.000Z

102

Necessary and sufficient condition for a realistic theory of quantum systems  

E-Print Network (OSTI)

We study the possibility to describe pure quantum states and evens with classical probability distributions and conditional probabilities and show that the distributions and/or conditional probabilities have to assume negative values, except for a simple model whose realistic space dimension is not smaller than the Hilbert space dimension of the quantum system. This gives a negative answer to a question proposed by Montina [Phys.Rev.Lett.{\\bf 97}, 180401 (2006)] whether or not does there exist a classical theory whose phase-space dimension is much smaller than the Hilbert space dimension for any quantum system. Thus, any realistic theory of quantum mechanics with nonnegative probability distributions and conditional probabilities requires a number of variables grows exponentially with the physical size.

Zeqian Chen

2009-11-13T23:59:59.000Z

103

Systems Theory and Knowledge Management Systems: The Case of Pratt-Whitney Rocketdyne  

Science Journals Connector (OSTI)

edge management (KM) systems, many managers are still unsure how they can implement a KM system that will effectively contribute to the firm's competitive ad- vantage. A common framework is one that breaks down KM into four main activities: knowledge ...

Mark Chun; Kiho Sohn; Priscilla Arling; Nelson F. Granados

2008-01-01T23:59:59.000Z

104

A combined graph theory and analytic hierarchy process approach for multicriteria evaluation of hydrogen energy systems  

Science Journals Connector (OSTI)

Hydrogen is a renewable energy source and has the potential to mitigate the green house gas effect and to meet the increasing global electricity demand. In the present study, a multicriteria methodology is developed by combining graph theory and analytic hierarchy process methods for the evaluation and selection of hydrogen energy systems. The hydrogen energy system alternatives are assessed with respect to economic, environmental, performance and social criteria by computing the hydrogen energy system preference index. A detailed procedure for determination of hydrogen energy system preference index is suggested. Two examples relating to hydrogen production processes and hydrogen energy technologies are cited in order to demonstrate and validate the effectiveness and flexibility of the proposed methodology. In each example, a list of all possible choices from the best to the worst alternatives is obtained taking into account different evaluation criteria.

Pramod B. Lanjewar; R.V. Rao; A.V. Kale

2014-01-01T23:59:59.000Z

105

Experimental verification of a theory of the influence of measurement conditions on temperature measurement accuracy with IR systems  

Science Journals Connector (OSTI)

A theory of the influence of measurement conditions on temperature measurement accuracy with infrared systems has been recently presented. A comparison study of the shortwave (3–5-?m)...

Chrzanowski, Krzysztof

1996-01-01T23:59:59.000Z

106

Frontiers, Opportunities, and Challenges in Biochemical and Chemical...  

NLE Websites -- All DOE Office Websites (Extended Search)

Frontiers, Opportunities, and Challenges in Biochemical and Chemical Catalysis of CO2. Frontiers, Opportunities, and Challenges in Biochemical and Chemical Catalysis of CO2....

107

2011 Biomass Program Platform Peer Review: Biochemical Conversion...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Biochemical Conversion 2011 Biomass Program Platform Peer Review: Biochemical Conversion This document summarizes the recommendations and evaluations provided by an independent...

108

Process Design and Economics for Biochemical Conversion of Lignocellul...  

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

Biochemical Conversion of Lignocellulosic Biomass to Ethanol: Dilute-Acid Pretreatment and Enzymatic Hydrolysis of Corn Stover Process Design and Economics for Biochemical...

109

Solar System planetary orbital motions and f(R) Theories of Gravity  

E-Print Network (OSTI)

In this paper we study the effects of $f(R)$ Theories of Gravity on Solar System gravitational tests. In particular, starting from an exact solution of the field equation in vacuum, in the Palatini formalism, we work out the effects that the modifications to the Newtonian potential would induce on the Keplerian orbital elements of the Solar System planets, and compare them with the latest results in planetary orbit determination from the EPM2004 ephemerides. It turns out that the longitudes of perihelia and the mean longitudes are affected by secular precessions. We obtain the resulting best estimate of the parameter $k$ which, being simply related to the scalar curvature, measures the non linearity of the gravitational theory. We use our results to constrain the cosmological constant and show how $f(R)$ functions can be constrained, in principle. What we obtain suggests that, in agreement with other recent papers, the Solar System experiments are not effective to set such constraints, if compared to the cosmologically relevant values.

Matteo Luca Ruggiero; Lorenzo Iorio

2006-12-14T23:59:59.000Z

110

A novel Artificial Neural Network training method combined with Quantum Computational Multi-Agent System theory  

Science Journals Connector (OSTI)

Artificial Neural Networks (ANNs) are powerful tools that can be used to model and investigate various complex and non-linear phenomena. In this study, we construct a new ANN, which is based on Multi-Agent System (MAS) theory and quantum computing algorithm. All nodes in this new ANN are presented as Quantum Computational (QC) agents, and these agents have learning ability. A novel ANN training method was proposed via implementing QCMAS reinforcement learning. This new ANN has powerful parallel-work ability and its training time is shorter than classic algorithm. Experiment results show that this method is effective.

Xiangping Meng; Jianzhong Wang; Yuzhen Pi; Quande Yuan

2009-01-01T23:59:59.000Z

111

Tuning Range-Separated Density Functional Theory for Photocatalytic Water Splitting Systems  

E-Print Network (OSTI)

We discuss the applicability of long-range separated density functional theory (DFT) to the prediction of electronic transitions of a particular photocatalytic system based on an Ir(III) photosensitizer (IrPS). Special attention is paid to the charge-transfer properties which are of key importance for the photoexcitation dynamics, but and cannot be correctly described by means of conventional DFT. The optimization of the range-separation parameter is discussed for IrPS including its complexes with electron donors and acceptors used in photocatalysis. Particular attention is paid to the problems arising for a description of medium effects by a polarizable continuum model.

Bokareva, Olga S; Bokarev, Sergey I; Kühn, Oliver

2015-01-01T23:59:59.000Z

112

The harmonic oscillator with dissipation within the theory of open quantum systems  

E-Print Network (OSTI)

Time evolution of the expectation values of various dynamical operators of the harmonic oscillator with dissipation is analitically obtained within the framework of the Lindblad theory for open quantum systems. We deduce the density matrix of the damped harmonic oscillator from the solution of the Fokker-Planck equation for the coherent state representation, obtained from the master equation for the density operator. The Fokker-Planck equation for the Wigner distribution function, subject to either the Gaussian type or the $\\delta$-function type of initial conditions, is also solved by using the Wang-Uhlenbeck method. The obtained Wigner functions are two-dimensional Gaussians with different widths.

A. Isar

2005-08-18T23:59:59.000Z

113

Detection and control of combustion instability based on the concept of dynamical system theory  

Science Journals Connector (OSTI)

We propose an online method of detecting combustion instability based on the concept of dynamical system theory, including the characterization of the dynamic behavior of combustion instability. As an important case study relevant to combustion instability encountered in fundamental and practical combustion systems, we deal with the combustion dynamics close to lean blowout (LBO) in a premixed gas-turbine model combustor. The relatively regular pressure fluctuations generated by thermoacoustic oscillations transit to low-dimensional intermittent chaos owing to the intermittent appearance of burst with decreasing equivalence ratio. The translation error, which is characterized by quantifying the degree of parallelism of trajectories in the phase space, can be used as a control variable to prevent LBO.

Hiroshi Gotoda; Yuta Shinoda; Masaki Kobayashi; Yuta Okuno; Shigeru Tachibana

2014-02-11T23:59:59.000Z

114

Optimization of a photovoltaic pumping system based on the optimal control theory  

SciTech Connect

This paper suggests how an optimal operation of a photovoltaic pumping system based on an induction motor driving a centrifugal pump can be realized. The optimization problem consists in maximizing the daily pumped water quantity via the optimization of the motor efficiency for every operation point. The proposed structure allows at the same time the minimization the machine losses, the field oriented control and the maximum power tracking of the photovoltaic array. This will be attained based on multi-input and multi-output optimal regulator theory. The effectiveness of the proposed algorithm is described by simulation and the obtained results are compared to those of a system working with a constant air gap flux. (author)

Betka, A.; Attali, A. [Laboratoire de Genie Electrique de Biskra (LGEB), Electrical Engineering Department, University of Biskra (Algeria)

2010-07-15T23:59:59.000Z

115

NREL: Biomass Research - Biochemical Conversion Projects  

NLE Websites -- All DOE Office Websites (Extended Search)

Biochemical Conversion Projects Biochemical Conversion Projects A photo of a woman looking at the underside of a clear plastic tray. The tray has a grid of small holes to hold sample tubes. An NREL researcher examines a sample tray used in the BioScreen C, an instrument used to monitor the growth of microorganisms under different conditions. NREL's projects in biochemical conversion involve three basic steps to convert biomass feedstocks to fuels: Converting biomass to sugar or other fermentation feedstock Fermenting these biomass intermediates using biocatalysts (microorganisms including yeast and bacteria) Processing the fermentation product to yield fuel-grade ethanol and other fuels. Among the current biochemical conversion RD&D projects at NREL are: Pretreatment and Enzymatic Hydrolysis

116

Design guidelines for optical resonator biochemical sensors  

E-Print Network (OSTI)

In this paper, we propose a design tool for dielectric optical resonator-based biochemical refractometry sensors. Analogous to the widely accepted photodetector figure of merit, the detectivity D*, we introduce a new sensor ...

Kimerling, Lionel C.

117

Theory of microwave-induced zero-resistance states in two-dimensional electron systems  

SciTech Connect

The phenomena of microwave-induced zero-resistance states (MIZRS) and microwave-induced resistance oscillations (MIRO) were discovered in ultraclean two-dimensional electron systems in 2001-2003 and have attracted great interest from researchers. In spite of numerous theoretical efforts, the true origin of these effects remains unknown so far. We show that the MIRO-ZRS phenomena are naturally explained by the influence of the ponderomotive forces which arise in the near-contact regions of two-dimensional electron gas under the action of microwaves. The proposed analytical theory is in agreement with all experimental facts accumulated so far and provides a simple and self-evident explanation of the microwave frequency, polarization, magnetic field, mobility, power, and temperature dependencies of the observed effects.

Mikhailov, S. A. [Institute of Physics, University of Augsburg, D-86135 Augsburg (Germany)

2011-04-15T23:59:59.000Z

118

Impacts of Optimized Cold & Hot Deck Reset Schedules on Dual Duct VAV Systems - Theory and Model Simulation  

E-Print Network (OSTI)

Impacts of Optimized Cold & Hot Deck Reset Schedules on Dual Duct VAV Systems - Theory and Model Simulation Mingsheng Liu, Ph.D., P.E. Energy Systems Laboratory Texas A&M University College Station, Texas Abstract Optimal hot and cold deck... rate increased from 30% to 70% of the maximum flow. Introduction Simultaneous heating and cooling can be reduced sigmficantly by optimizing cold and hot deck reset schedules in dual duct constant volume systems [Liu et. a1 1994, 1995, 19961...

Liu, M.; Claridge, D. E.

1998-01-01T23:59:59.000Z

119

A decision support system prototype including human factors based on the TOGA meta-theory approach  

SciTech Connect

The human contribution to the risk of operation of complex technological systems is often not negligible and sometimes tends to become significant, as shown by many reports on incidents and accidents occurred in the past inside Nuclear Power Plants (NPPs). An error of a human operator of a NPP can derive by both omission and commission. For instance, complex commission errors can also lead to significant catastrophic technological accidents, as for the case of the Three Mile Island accident. Typically, the problem is analyzed by focusing on the single event chain that has provoked the incident or accident. What is needed is a general framework able to include as many parameters as possible, i.e. both technological and human factors. Such a general model could allow to envisage an omission or commission error before it can happen or, alternatively, suggest preferred actions to do in order to take countermeasures to neutralize the effect of the error before it becomes critical. In this paper, a preliminary Decision Support System (DSS) based on the so-called (-) TOGA meta-theory approach is presented. The application of such a theory to the management of nuclear power plants has been presented in the previous ICAPP 2011. Here, a human factor simulator prototype is proposed in order to include the effect of human errors in the decision path. The DSS has been developed using a TRIGA research reactor as reference plant, and implemented using the LabVIEW programming environment and the Finite State Machine (FSM) model The proposed DSS shows how to apply the Universal Reasoning Paradigm (URP) and the Universal Management Paradigm (UMP) to a real plant context. The DSS receives inputs from instrumentation data and gives as output a suggested decision. It is obtained as the result of an internal elaborating process based on a performance function. The latter, describes the degree of satisfaction and efficiency, which are dependent on the level of responsibility related to each professional role. As an application, we present the simulation of the discussed error, e.g. the unchecked extraction of the control rods during a power variation maneuver and we show how the effect of human errors can affect the performance function, giving rise to different countermeasures which could call different operator figures into play, potentially not envisaged in the standard procedure. (authors)

Cappelli, M.; Memmi, F. [UTFISST, ENEA Casaccia, via Anguillarese 301, Rome (Italy); Gadomski, A. M. [ECONA, Centro Interuniv. Elaborazione Cognitiva Sistemi Naturali e Artificiali, via dei Marsi 47, Rome (Italy); Sepielli, M. [UTFISST, ENEA Casaccia, via Anguillarese 301, Rome (Italy)

2012-07-01T23:59:59.000Z

120

Optimal design of stimulus experiments for robust discrimination of biochemical reaction networks  

Science Journals Connector (OSTI)

......method in MATLAB/AMPL is...biological processes provide the...far. For chemical reaction...function (PDF) in an optimal...Monte-Carlo simulations, the approximate...bistable chemical system...biochemical processes. During...response PDF, which results...parameter PDF under the...method in MATLAB/AMPL is...University, Process Systems Engineering......

R. J. Flassig; K. Sundmacher

2012-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

2009 Biochemical Conversion Platform Review Report  

Energy.gov (U.S. Department of Energy (DOE))

This document summarizes the recommendations and evaluations provided by an independent external panel of experts at the U.S. Department of Energy Biomass Program’s Biochemical Conversion platform review meeting, held on April 14-16, 2009, at the Sheraton Denver Downtown, Denver, Colorado.

122

Production of bioenergy and biochemicals from industrial and  

E-Print Network (OSTI)

Production of bioenergy and biochemicals from industrial and agricultural wastewater Largus T biological processing strat- egies that produce bioenergy or biochemicals while treating industrial on wastewater treatment from pollution control to resource exploitation. Many bioprocesses can provide bioenergy

Angenent, Lars T.

123

Density Functional Theory Analysis of Metal/Graphene Systems As a Filter Membrane to Prevent CO Poisoning in Hydrogen Fuel Cells  

Science Journals Connector (OSTI)

Density Functional Theory Analysis of Metal/Graphene Systems As a Filter Membrane to Prevent CO Poisoning in Hydrogen Fuel Cells ... Fuel cells: principles, types, fuels, and applications ... Components for PEM fuel cell systems using hydrogen and CO containing fuels ...

Deborah J. D. Durbin; Cecile Malardier-Jugroot

2010-12-21T23:59:59.000Z

124

Chiral effective field theory analysis of hadronic parity violation in few-nucleon systems  

SciTech Connect

Background: Weak interactions between quarks induce a parity-violating (PV) component in the nucleonnucleon potential, whose effects are currently being studied in a number of experiments involving few-nucleon systems. In the present work, we reconsider the derivation of this PV component within a chiral effective field theory (chiEFT) framework. Purpose: The objectives of the present work are twofold. The first is to perform a detailed analysis of the PV nucleon-nucleon potential up to next-to-next-to-leading (N2LO) order in the chiral expansion, in particular, by determining the number of independent low-energy constants (LECs) at N2LO. The second objective is to investigate PV effects in a number of few-nucleon observables, including the #2; p-p longitudinal asymmetry, the neutron spin rotation in #2;n-p and #2;n-d scattering, and the longitudinal asymmetry in the {sup 3}He(#2;{vector n},p){sup 3}H chargeexchange reaction. Methods: The chiEFT PV potential includes one-pion-exchange, two-pion-exchange, and contact terms as well as 1/M (M being the nucleon mass) nonstatic corrections. Dimensional regularization is used to renormalize pion loops. The wave functions for the A = 2?-4 nuclei are obtained by using strong two- and three-body potentials also derived, for consistency, from chiEFT. In the case of the A = 3?-4 systems, the wave functions are computed by expanding on a hyperspherical harmonics functions basis. Results: We find that the PV potential at N2LO depends on six LECs: the pion-nucleon PV coupling constant h^1_pi and five parameters multiplying contact interactions. An estimate for the range of values of the various LECs is provided by using available experimental data, and these values are used to obtain predictions for the other PV observables. Conclusions: The chiEFT approach provides a very satisfactory framework to analyze PV effects in few-nucleon systems.

Viviani, Michele [INFN; Baroni, Alessandro [ODU; Girlanda, Luca [Lecce U.; Kievsky, Alejandro [Pisa U,; Marcucci, Laura E. [Pisa U,; Schiavilla, Rocco [ODU, JLAB

2014-06-01T23:59:59.000Z

125

4.2 CONNECTIONS BETWEEN DISCOVERIES AND THEIR USE IN SERVICE TO SOCIETY 4.2.1 A MODULAR MICROFLUIDIC ARCHITECTURE FOR INTEGRATED BIOCHEMICAL  

E-Print Network (OSTI)

MICROFLUIDIC ARCHITECTURE FOR INTEGRATED BIOCHEMICAL ANALYSIS K. A. Shaikh, K. S. Ryu, E. D. Goluch, J.-M. Nam Microfluidic Architecture for Integrated Biochemical Analysis," Proc. Nat. Acad. Sci., 2005, 102, 9745 microfluidic systems. Micro valves, pumps, sensors, mixers, and other components are integrated on a silicon

Shull, Kenneth R.

126

Generalization of internal Density Functional Theory and Kohn-Sham scheme to multicomponent systems, and link with traditional DFT  

E-Print Network (OSTI)

We generalize the recently developped "internal" Density Functional Theory (DFT) and Kohn-Sham scheme to multicomponent systems. We obtain a general formalism, applicable for the description of multicomponent self-bound systems (as molecules where the nuclei are treated explicitely, atomic nuclei and mix of 3He and 4He droplets), where the fundamental translational symmetry has been treated correctly. The main difference with traditional DFT is the explicit inclusion of center-of-mass correlations in the functional. A large part of the paper is dedicated to the application to molecules, which permits among other to clarify the approximations that underly traditional DFT.

Jeremie Messud

2011-11-21T23:59:59.000Z

127

Microscopic theory of sound propagation in the superfluid {sup 3}He-aerogel system  

SciTech Connect

We present a theory of sound propagation in superfluid {sup 3}He confined in aerogel, taking dragged aerogel motion into account. The superfluid dynamics coupled with the aerogel motion is formulated by use of the Keldysh Green's function for weak-coupling superfluid Fermi liquid. We apply the theory to the hydrodynamic regime and calculate the attenuation of a hydrodynamic longitudinal sound mode, the so-called fast mode. The result is compared to the acoustic experiment reported by the Northwestern University group [R. Nomura, G. Gervais, T. M. Haard, Y. Lee, N. Mulders, and W. P. Halperin, Phys. Rev. Lett. 85, 4325 (2000); G. Gervais, R. Nomura, T. M. Haard, Y. Lee, N. Mulders, and W. P. Halperin, J. Low Temp. Phys. 122, 1 (2001)]. We find reasonable agreement between the theory and the experiment.

Higashitani, S.; Miura, M.; Yamamoto, M.; Nagai, K. [Faculty of Integrated Arts and Sciences, Hiroshima University, Kagamiyama 1-7-1, Higashi-Hiroshima 739-8521 (Japan)

2005-04-01T23:59:59.000Z

128

Biochemical processing of heavy oils and residuum  

SciTech Connect

During the past several decades, the petroleum industry has adjusted gradually to accommodate the changes in market product demands, government regulations, and the quality and cost of feedstock crude oils. For example, the trends show that the demand for distillate fuels, such as diesel, as compared to gasoline are increasing. Air-quality standards have put additional demand on the processing of heavier and higher sulfur feed stocks. Thus, the 1990 Clean Air Act amendments require the industry to produce greater quantities of oxygenated gasoline, and lower sulfur diesel and reformulated gasoline. Biochemical technology may play an important role in responding to these demands on the petroleum industry.

Lin, M.S.; Premuzic, T.; Yablon, J.H.; Zhou, Wei-Min

1995-05-01T23:59:59.000Z

129

The method of dynamic projection operators in the theory of hyperbolic systems of partial differential equations with variable coefficients  

E-Print Network (OSTI)

We consider a generalization of the projecting operators method for the case of Cauchy problem for systems of 1D evolution differential equations of first order with variable coefficients. It is supposed that the coefficients dependence on the only variable x is weak, that is described by a small parameter introduction. Such problem corresponds, for example, to the case of wave propagation in a weakly inhomogeneous medium. As an example, we specify the problem to adiabatic acoustics. For the Cauchy problem, to fix unidirectional modes, the projection operators are constructed. The method of successive approximations (perturbation theory) is developed and based on pseudodifferential operators theory. The application of these projection operators allows to obtain approximate evolution equations corresponding to the separated directed waves.

Sergey Leble; Irina Vereshchagina

2014-03-30T23:59:59.000Z

130

Time and International Relations Theory  

E-Print Network (OSTI)

Eternal permutational theories: neorealism and world systems theory 19 Neorealism 20 World systems theory 24 Closed historical theories: liberal democratic peace theory and teleological constructivsm 29 Liberal... frequently characterizes them by their duration. 3 International institutions and regimes emerge over years, decades, or centuries rather than appearing instantaneously in the global milieu. Innovations such as telegraphs, telephones, televisions...

Hom, Andrew R.

2008-07-22T23:59:59.000Z

131

Biochemical processing of heavy oils and residuum  

SciTech Connect

During the past several decades, the petroleum industry has adjusted gradually to accommodate the changes in market product demands, government regulations, and the quality and cost of feedstock crude oils. For example, the trends show that the demand for distillate fuels, such as diesel, as compared to gasoline are increasing. Air-quality standards have put additional demand on the processing of heavier and higher sulfur feed stocks. Thus, the 1990 Clean Air Act amendments require the industry to produce greater quantities of oxygenated gasoline, and lower sulfur diesel and reformulated gasoline. Biochemical technology may play an important role in responding to these demands on the petroleum industry. Since oil is of biological origin, some biochemical reactions started at the beginning of its formation are still continuing in reservoirs on a geological time scale. Although these rates are very slow, many reactions can proceed readily under optimal conditions. This article will address some of the reactions that may be useful for processing heavy oils and refinery residuum. 6 refs., 2 figs., 3 tabs.

Lin, M.S.; Premuzic, E.T.; Yablon, J.H.; Zhou, Wei-Min [Brookhaven National Lab., Upton, NY (United States)

1996-12-31T23:59:59.000Z

132

Biochemical Production of Ethanol from Corn Stover: 2007 State...  

Energy Savers (EERE)

Process Design and Economics for Biochemical Conversion of Lignocellulosic Biomass to Ethanol: Dilute-Acid Pretreatment and Enzymatic Hydrolysis of Corn Stover Process...

133

Leveraging Post-Translational Phosphopantetheinylation as a Versatile Biochemical Tool /  

E-Print Network (OSTI)

calf intestinal phosphatase (CIP) (Worthington Biochemicals,dissociation constants. CIP (100 U at 3800 U/mL) was addedconcentration. Incubation of CIP-treated and untreated Sfp

Kosa, Nicolas M.

2013-01-01T23:59:59.000Z

134

Brzezinski, Tomasz, and Eric von Elert. Biochemical food quality ...  

Science Journals Connector (OSTI)

Biochemical food quality effects on a Daphnia hybrid complex. Tomasz Brzezinski1 ... energy are transferred from primary producers to higher trophic levels is a ...

2007-10-24T23:59:59.000Z

135

A centralized control system for ecological vehicle platooning using linear quadratic regulator theory  

Science Journals Connector (OSTI)

This paper presents an ecological vehicle platooning control system that aims in reducing overall fuel consumption of the vehicles in a platoon. A centralized linear quadratic regulator system for controlling the...

Anan Kaku; Masakazu Mukai; Taketoshi Kawabe

2012-10-01T23:59:59.000Z

136

Using graph theory to resolve state estimator issues faced by deregulated power systems  

E-Print Network (OSTI)

.................................. 75 5.3 The global semantic dictionary for the SKW.................................... 77 5.4 The SKW with ontology connection knowledge .............................. 79 5.5 System entity relationships in a typical power market... centers and logistics departments. Information integration for such a system has become very challenging [49-55]. Common Information Model (CIM) is utilized for data exchange [53]. How to transform the legacy Energy Management System (EMS) system...

Lei, Jiansheng

2009-05-15T23:59:59.000Z

137

From max-plus algebra to nonexpansive mappings: a nonlinear theory for discrete event systems  

Science Journals Connector (OSTI)

Discrete event systems provide a useful abstraction for modelling a wide variety of systems: digital circuits, communication networks, manufacturing plants, etc. Their dynamics--stability, equilibrium states, cyclical behaviour, asymptotic average delays--are ... Keywords: cycle time, discrete event system, fixed point, max-plus semiring, nonexpansive map, nonlinear eigenvalue, nonnegative matrix, topical function

Jeremy Gunawardena

2003-02-01T23:59:59.000Z

138

Design methodology based on H? control theory for marine propulsion system with bumpless transfer function  

Science Journals Connector (OSTI)

In this paper we propose a control system design methodology which has two main objectives: the first one is to achieve control system specifications for a local H? controller designed for a given operation condition, and the second ... Keywords: H controller, bumpless transfer, ship propulsion system

M. J. Lopez; L. Garcia; J. Lorenzo; A. Consegliere

2010-03-01T23:59:59.000Z

139

Brief Stability region for a class of open-loop unstable linear systems: Theory and application  

Science Journals Connector (OSTI)

A new method to calculate the stability region of scalar systems with one unstable pole subject to control limitations is derived and used to determine the conditions for a maximum stabilizer controller. The results are illustrated by means of two numerical ... Keywords: Constraints, Linear systems, Sliding mode, Stabilizer, Unstable

L. Scibile; B. Kouvaritakis

2000-01-01T23:59:59.000Z

140

Boussinesq Systems of Bona-Smith Type on Plane Domains: Theory and Numerical Analysis  

E-Print Network (OSTI)

We consider a class of Boussinesq systems of Bona-Smith type in two space dimensions approximating surface wave flows modelled by the three-dimensional Euler equations. We show that various initial-boundary-value problems for these systems, posed on a bounded plane domain are well posed locally in time. In the case of reflective boundary conditions, the systems are discretized by a modified Galerkin method which is proved to converge in $L^2$ at an optimal rate. Numerical experiments are presented with the aim of simulating two-dimensional surface waves in complex plane domains with a variety of initial and boundary conditions, and comparing numerical solutions of Bona-Smith systems with analogous solutions of the BBM-BBM system.

Dougalis, Vassilios; Saut, Jean-Claude

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

Operator support for ageing nuclear critical infrastructure systems: integrating ecological interface design with prospect theory  

Science Journals Connector (OSTI)

Operator support is essential for making decisions involving ageing infrastructure. In particular, ageing plants may have deviated from their original condition into a new state with a less predictable set of possible actions and outcomes. Standard procedures and practices may be insufficient to handle the risks and vulnerabilities of ageing nuclear infrastructure. Operator support must be designed with an understanding of how operators make decisions under uncertainty and a view to supporting unexpected situations. Prospect theory (PT) and ecological interface design (EID) are proposed as two complementary approaches for guiding operator support. PT describes how people make decisions under uncertainty and EID is an interface design approach for aiding operators with the problem-solving process in unanticipated situations. We suggest that these two approaches can be integrated to improve complex decision making in ageing nuclear plants.

Catherine Burns; Ali Asgary; Jason K. Levy

2005-01-01T23:59:59.000Z

142

Using Control Theory to Guide Load Shedding in Medical Data Stream Management System  

Science Journals Connector (OSTI)

The load shedding problem is vital to a Data Stream Management System (DSMS). This paper ... the design, implementation, and evaluation of a load shedding method under the guide of the ... is not so in a DSMS usi...

Zijing Hu; Hongyan Li; Baojun Qiu…

2005-01-01T23:59:59.000Z

143

The Theory of Functional Forms of the Consumer Demand System and its Application  

E-Print Network (OSTI)

This dissertation studies the consumer demand system focusing on its functional forms in the theoretical aspect and the empirical aspect. The theoretical part investigates the regularity property of the consumer demand ...

Usui, Ikuyasu

2010-01-25T23:59:59.000Z

144

Theory and Applications of the 3-DOF Modal System for PBSE of Asymmetrical Buildings  

Science Journals Connector (OSTI)

Seismic evaluation plays an important role in performance based seismic engineering (PBSE). The modal system is the basis of structural dynamics, which is closely associated with PBSE. This paper shows that th...

Jui-Liang Lin; Keh-Chyuan Tsai

2014-01-01T23:59:59.000Z

145

Canonical Duality-Triality Theory: Bridge Between Nonconvex Analysis/Mechanics and Global Optimization in Complex Systems  

E-Print Network (OSTI)

Canonical duality-triality is a breakthrough methodological theory, which can be used not only for modeling complex systems within a unified framework, but also for solving a wide class of challenging problems from real-world applications. This paper presents a brief review on this theory, its philosophical origin, physics foundation, and mathematical statements in both finite and infinite dimensional spaces, with emphasizing on its role for bridging the gap between nonconvex analysis/mechanics and global optimization. Special attentions are paid on unified understanding the fundamental difficulties in large deformation mechanics, bifurcation/chaos in nonlinear science, and the NP-hard problems in global optimization, as well as the theorems, methods, and algorithms for solving these challenging problems. Misunderstandings and confusions on some basic concepts, such as objectivity, nonlinearity, Lagrangian, and generalized convexities are discussed and classified. Breakthrough from recent challenges and conceptual mistakes by M. Voisei, C. Z\\u{a}linescu and his co-worker are addressed. Some open problems and future works in global optimization and nonconvex mechanics are proposed.

David Y Gao; Ning Ruan; Vittorio Latorre

2014-10-10T23:59:59.000Z

146

Canonical Duality-Triality Theory: Bridge Between Nonconvex Analysis/Mechanics and Global Optimization in Complex Systems  

E-Print Network (OSTI)

Canonical duality-triality is a breakthrough methodological theory, which can be used not only for modeling complex systems within a unified framework, but also for solving a wide class of challenging problems from real-world applications. This paper presents a brief review on this theory, its philosophical origin, physics foundation, and mathematical statements in both finite and infinite dimensional spaces, with emphasizing on its role for bridging the gap between nonconvex analysis/mechanics and global optimization. Special attentions are paid on unified understanding the fundamental difficulties in large deformation mechanics, bifurcation/chaos in nonlinear science, and the NP-hard problems in global optimization, as well as the theorems, methods, and algorithms for solving these challenging problems. Misunderstandings and confusions on some basic concepts, such as objectivity, nonlinearity, Lagrangian, and generalized convexities are discussed and classified. Breakthrough from recent challenges and conceptual mistakes by M. Voisei, C. Zalinescu and his co-worker are addressed. Some open problems and future works in global optimization and nonconvex mechanics are proposed.

David Y Gao; Ning Ruan; Vittorio Latorre

2014-11-26T23:59:59.000Z

147

Theory of ballistic transport through a 3D-1D-3D quantum system  

Science Journals Connector (OSTI)

Ballistic transport through a three-dimensional–one-dimensional–three-dimensional quantum system has been studied theoretically. Based on an exact quantum-mechanical formulation, the quantization of the conductance in units of 2e2/h of this vertical analog to the split-gate defined quantum channel in a two-dimensional electron gas has been proved. By taking into account the mode degeneracy in the lateral confined quantum pillar, multiple conductance plateaus, i.e., the conductance changes in steps of multiples of 2e2/h, are shown to appear in the quantum system.

Hongqi Xu

1993-09-15T23:59:59.000Z

148

Theory for hydrostatic gas journal bearings for micro-electro-mechanical systems  

E-Print Network (OSTI)

The goal of the MIT micro-engine project is to develop high-speed rotating Power MEMS (Micro-Electro-Mechanical Systems) using computer chip fabrication technologies. To produce high power (10-50 W) in a small volume (less ...

Liu, Lixian, Ph. D. Massachusetts Institute of Technology

2005-01-01T23:59:59.000Z

149

Density functional theory and Kohn-Sham scheme for self-bound systems  

E-Print Network (OSTI)

We demonstrate how the separation of the total energy of a self-bound system into a functional of the internal one-body Fermionic density and a function of an arbitrary wave vector describing the center-of-mass kinetic energy can be used to set-up an "internal" Kohn-Sham scheme.

J. Messud; M. Bender; E. Suraud

2009-11-10T23:59:59.000Z

150

Coarse analysis of multiscale systems: diffuser flows, charged particle motion, and connections to averaging theory  

E-Print Network (OSTI)

Coarse analysis of multiscale systems: diffuser flows, charged particle motion, and connections of working with Harish Bhat (without whom the particles work would not have been done), Matt West, Troy Smith, invisible, the only wise God, be honour and glory for ever and ever. Amen. 1 Timothy 1:15-17 #12;vi Abstract

Murray, Richard M.

151

Hamilton-Jacobi theory for one dimensional autonomous systems using parametric transformations  

E-Print Network (OSTI)

A necessary and sufficient condition for a parameter transformation that leaves invariant the energy of a one dimensional autonomous system is obtained. Using a parameter transformation the Hamilton-Jacobi equation is solved by a quadrature. An example of this approach is given.

G. Gonzalez

2005-01-22T23:59:59.000Z

152

Particle transport in low-energy ventilation systems. Part 1: theory of steady states  

E-Print Network (OSTI)

of the global population. According to the Energy Information Administration (http://www.eia.doe.gov/) the US of this energy is spent on ventilation of buildings with summer time cooling account for almost 10% of the US total energy budget. To reduce energy consumption various low-energy systems such as displacement

Bolster, Diogo

153

Introduction to the application of the dynamical systems theory in the study of the dynamics of cosmological models of dark energy  

E-Print Network (OSTI)

The theory of the dynamical systems is a very complex subject which has brought several surprises in the recent past in connection with the theory of chaos and fractals. The application of the tools of the dynamical systems in cosmological settings is less known in spite of the amount of published scientific papers on this subject. In this paper a -- mostly pedagogical -- introduction to the application in cosmology of the basic tools of the dynamical systems theory is presented. It is shown that, in spite of their amazing simplicity, these allow to extract essential information on the asymptotic dynamics of a wide variety of cosmological models. The power of these tools is illustrated within the context of the so called $\\Lambda$CDM and scalar field models of dark energy. This paper is suitable for teachers, undergraduate and postgraduate students from physics and mathematics disciplines.

García-Salcedo, Ricardo; Horta-Rangel, Francisco A; Quiros, Israel; Sanchez-Guzmán, Daniel

2015-01-01T23:59:59.000Z

154

A computational framework for risk-based power systems operations under uncertainty. Part I: Theory  

Science Journals Connector (OSTI)

Abstract With larger penetrations of wind power, the uncertainty increases in power systems operations. The wind power forecast errors must be accounted for by adapting existing operating tools or designing new ones. A switch from the deterministic framework used today to a probabilistic one has been advocated. This two-part paper presents a framework for risk-based operations of power systems. This framework builds on the operating risk defined as the probability of the system to be outside the stable operation domain, given probabilistic forecasts for the uncertainty (load and wind power generation levels) and outage rates of chosen elements of the system (generators and transmission lines). This operating risk can be seen as a probabilistic formulation of the N ? 1 criterion. The stable operation domain is defined by voltage-stability limits, small-signal stability limits, thermal stability limits and other operating limits. In Part I of the paper, a previous method for estimating the operating risk is extended by using a new model for the joint distribution of the uncertainty. This new model allows for a decrease in computation time of the method, which allows for the use of later and more up-to-date forecasts. In Part II, the accuracy and the computation requirements of the method using this new model will be analyzed and compared to the previously used model for the uncertainty. The method developed in this paper is able to tackle the two challenges associated with risk-based real-time operations: accurately estimating very low operating risks and doing so in a very limited amount of time.

Camille Hamon; Magnus Perninge; Lennart Söder

2015-01-01T23:59:59.000Z

155

Fundamental-measure density functional theory study of the crystal-melt interface of the hard sphere system  

E-Print Network (OSTI)

Fundamental-measure density functional theory study of the crystal-melt interface of the hard density functional theory. The equilibrium interfacial density profiles and interfacial free energies were value is 0.6 5,10 . For the past two decades a number of density functional theories were developed

Song, Xueyu

156

Application of convolution theory for solving non-linear flow problems: gas flow systems  

E-Print Network (OSTI)

. . . . . . . . . . . . 15 3. 2. 1 Generalized Analytical Solution for Real Gas Systems . . . . . . . . 15 3. 2. 2 Dry Gas Material Balance Relations: P(tn) - g(u) Identity. . . . . . 16 3. 3 Functional and Numerical Data Models for the Non-Linear CHAPTER IV Component... 5 4. 6 4. 7 4. 8 4. 9 Numerical Model for the (/igcg);/(/tgcg) Data Function Based on Roumboutsos and Stewart Algorithm for Transforming Data into the Laplace Domain. . (p;cg, )/(peg) Versus (p/zj/(p, /z;) (y?= 0. 7 (air = 1. 0), T = 50 'F...

Mireles, Thomas Joseph

2012-06-07T23:59:59.000Z

157

MOSFETEMBEDDED MICROCANTILEVER SIGNAL TRANSDUCTION PLATFORM FOR BIOCHEMICAL DETECTION AND DIAGNOSIS  

E-Print Network (OSTI)

MOSFETEMBEDDED MICROCANTILEVER SIGNAL TRANSDUCTION PLATFORM FOR BIOCHEMICAL DETECTION for reliable biological and chemical detection techniques that can provide enhanced sensitivity platform that provides labelfree detection of molecular interactions in real time. Demonstrations

Shull, Kenneth R.

158

Analysis of robustness and stochasticity in biochemical networks  

E-Print Network (OSTI)

Cells are constantly faced with the challenge of functioning reliably while being subject to unpredictable changes from within and outside. Here, I present two studies in which I analyze how biochemical circuits that ...

Ong, Mei-Lyn

2012-01-01T23:59:59.000Z

159

Knowledge-based framework for hypothesis formation in biochemical networks  

Science Journals Connector (OSTI)

......Spain, September 28-October 1, 2005 Knowledge-based framework for hypothesis formation...85281, USA Motivation: The current knowledge about biochemical networks is largely...constantly need to revise or extend existing knowledge. The revision and/or extension are......

Nam Tran; Chitta Baral; Vinay J. Nagaraj; Lokesh Joshi

2005-09-01T23:59:59.000Z

160

Self-consistent field theory based molecular dynamics with linear system-size scaling  

SciTech Connect

We present an improved field-theoretic approach to the grand-canonical potential suitable for linear scaling molecular dynamics simulations using forces from self-consistent electronic structure calculations. It is based on an exact decomposition of the grand canonical potential for independent fermions and does neither rely on the ability to localize the orbitals nor that the Hamilton operator is well-conditioned. Hence, this scheme enables highly accurate all-electron linear scaling calculations even for metallic systems. The inherent energy drift of Born-Oppenheimer molecular dynamics simulations, arising from an incomplete convergence of the self-consistent field cycle, is circumvented by means of a properly modified Langevin equation. The predictive power of the present approach is illustrated using the example of liquid methane under extreme conditions.

Richters, Dorothee [Institute of Mathematics and Center for Computational Sciences, Johannes Gutenberg University Mainz, Staudinger Weg 9, D-55128 Mainz (Germany)] [Institute of Mathematics and Center for Computational Sciences, Johannes Gutenberg University Mainz, Staudinger Weg 9, D-55128 Mainz (Germany); Kühne, Thomas D., E-mail: kuehne@uni-mainz.de [Institute of Physical Chemistry and Center for Computational Sciences, Johannes Gutenberg University Mainz, Staudinger Weg 7, D-55128 Mainz (Germany); Technical and Macromolecular Chemistry, University of Paderborn, Warburger Str. 100, D-33098 Paderborn (Germany)

2014-04-07T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

National Bioenergy Center Biochemical Platform Integration Project: Quarterly Update #17, October-December 2007  

SciTech Connect

October to December, 2007 edition of the newsletter of the Biochemical Platform Process Integration project.

Schell, D.

2008-01-01T23:59:59.000Z

162

National Bioenergy Center Biochemical Platform Integration Project: Quarterly Update #24, July-September 2009  

SciTech Connect

July to September, 2009 edition of the National Bioenergy Center's Biochemical Platform Integration Project quarterly newsletter.

Schell, D.

2009-10-01T23:59:59.000Z

163

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS--I: FUNDAMENTAL THEORY AND APPLICATIONS, VOL. 50, NO. 8, AUGUST 2003 991 Hexagonal SigmaDelta Modulation  

E-Print Network (OSTI)

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS--I: FUNDAMENTAL THEORY AND APPLICATIONS, VOL. 50, NO. 8-phase power-electronic converters. A conventional 61modulator with scalar signals and binary quantizer is generalized to a 61 modulator with vector signals and a hexagonal quantizer. Indeed, power-electronic

Dobson, Ian

164

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS--I: FUNDAMENTAL THEORY AND APPLICATIONS, VOL. 50, NO. 8, AUGUST 2003 1103 Small-Signal Analysis of Frequency-Controlled  

E-Print Network (OSTI)

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS--I: FUNDAMENTAL THEORY AND APPLICATIONS, VOL. 50, NO. 8, AUGUST 2003 1103 Small-Signal Analysis of Frequency-Controlled Electronic Ballasts Yan Yin, Student of frequency-controlled dimming electronic ballasts. A modified phasor transformation is proposed that converts

165

Method and apparatus for energy efficient self-aeration in chemical, biochemical, and wastewater treatment processes  

DOE Patents (OSTI)

The present invention is a pulse spilling self-aerator (PSSA) that has the potential to greatly lower the installation, operation, and maintenance cost associated with aerating and mixing aqueous solutions. Currently, large quantities of low-pressure air are required in aeration systems to support many biochemical production processes and wastewater treatment plants. Oxygen is traditionally supplied and mixed by a compressor or blower and a mechanical agitator. These systems have high-energy requirements and high installation and maintenance costs. The PSSA provides a mixing and aeration capability that can increase operational efficiency and reduce overall cost.

Gao, Johnway [Richland, WA; Skeen, Rodney S [Pendleton, OR

2002-05-28T23:59:59.000Z

166

STOCKS: STOChastic Kinetic Simulations of biochemical systems with Gillespie algorithm  

Science Journals Connector (OSTI)

......was modeled as a random pool with mean 35 and standard...modeled as the random pool with mean 350 and standard...is described by free energies rather than rate constants...improving computational efficiency of exact algorithms for...Origins of individual swimming behavior in bacteria......

Andrzej M. Kierzek

2002-03-01T23:59:59.000Z

167

Light-addressable potentiometric sensor for biochemical systems  

Science Journals Connector (OSTI)

...3) where E is the width of the photoresponse curve (0.1 V), C is the capacitance of the oxynitride insulator (0.05 SLF cm-2), and t is the illumination time per modulation cycle (0.05 msec for 10-kHz square-wave modulation). This optimum...

DG Hafeman; JW Parce; HM McConnell

1988-05-27T23:59:59.000Z

168

Accelerated maximum likelihood parameter estimation for stochastic biochemical systems  

E-Print Network (OSTI)

as: Daigle et al. : Accelerated maximum likelihood parame-Gillespie DT: Approximate accelerated stochastic simulationARTICLE Open Access Accelerated maximum likelihood parameter

Daigle, Bernie J; Roh, Min K; Petzold, Linda R; Niemi, Jarad

2012-01-01T23:59:59.000Z

169

Application And Evaluation Of Biomagnetic And Biochemical Monitoring Of The  

Open Energy Info (EERE)

Evaluation Of Biomagnetic And Biochemical Monitoring Of The Evaluation Of Biomagnetic And Biochemical Monitoring Of The Dispersion And Deposition Of Volcanically-Derived Particles At Mt Etna, Italy Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Application And Evaluation Of Biomagnetic And Biochemical Monitoring Of The Dispersion And Deposition Of Volcanically-Derived Particles At Mt Etna, Italy Details Activities (0) Areas (0) Regions (0) Abstract: Biomagnetic monitoring, using tree leaves as passive surfaces for particle collection, has been shown to be a promising technique for assessing the dispersion and deposition of particles in the context of anthropogenic pollution. By comparing leaves' magnetic properties with trace metal levels measured in the leaves, we here assess the utility of

170

IEEE TRANSACTIONS ON SYSTEMS, MAN, AND CYBERNETICS--PART A: SYSTEMS AND HUMANS, VOL. 36, NO. 5, SEPTEMBER 2006 943 Extending the Decision Field Theory to Model  

E-Print Network (OSTI)

, SEPTEMBER 2006 943 Extending the Decision Field Theory to Model Operators' Reliance on Automation by describing a quantitative model of trust in automation. We extend decision field theory (DFT) to describe the multiple sequential decisions that characterize reliance on au- tomation in supervisory control situations

Lee, John D.

171

Developing a Knowledge-Based System Using Rough Set Theory and Genetic Algorithms for Substation Fault Diagnosis  

Science Journals Connector (OSTI)

This chapter proposes a novel and hybrid approach using Rough Set Theory and a Genetic Algorithm (RS-GA) indexrough hybrid to extract knowledge from a set of events captured by (microprocessor based) protection, ...

Ching Lai Hor; Peter Crossley; Simon Watson…

2009-01-01T23:59:59.000Z

172

Modeling Tomorrow's Biorefinery - the NREL Biochemical Pilot Plant; Biomass Program (Brochure)  

NLE Websites -- All DOE Office Websites (Extended Search)

great ideas into viable solutions great ideas into viable solutions requires the ability to test theories under real world conditions. Few companies have the resources to build pilot-scale processing plants to test their ideas. The U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) helps by sharing its world-class equipment and expertise with industry and other research organizations through a variety of contractual arrangements. At the NREL campus in Golden, Colo., researchers use state-of-the-art laboratories to develop and improve the technologies that convert biomass to fuels, chemicals, and materials. One of the most important tools available to biomass researchers is the Biochemical Pilot Plant housed in the Alternative Fuels User Facility (AFUF). In this facility,

173

Oilseeds for Biofuels and Biochemicals in Texas BIOENERGY PROGRAM  

E-Print Network (OSTI)

Oilseeds for Biofuels and Biochemicals in Texas BIOENERGY PROGRAM Description feedstocks (primarily soybean) with food and feed markets. The price of October 2009 Chicago soybean oil to be competitive in the domestic market. U.S. biodiesel manfacturers are closing, consolidating, or suspending

174

Progressive Commercial Cigarette Yield Reduction: Biochemical Exposure and Behavioral Assessment  

Science Journals Connector (OSTI)

...cotinine analyses, the U.S. Centers for Disease Control and Prevention...San Diego: Educational and Industrial Testing Service; 1971. 15...biochemical exposure and behavioral assessment. | Mandated reduction of...smoking behavior, with an assessment of nicotine intake and exposure...

Neal L. Benowitz; Katherine M. Dains; Sharon M. Hall; Susan Stewart; Margaret Wilson; Delia Dempsey; and Peyton Jacob III

2009-03-01T23:59:59.000Z

175

Deterministic modelling and stochastic simulation of biochemical pathways using MATLAB  

E-Print Network (OSTI)

Deterministic modelling and stochastic simulation of biochemical pathways using MATLAB M. Ullah, H environment MATLAB is widely used in the physical and engineering sciences. We describe a collection of MATLAB for stochastic simulation using advanced MATLAB coding (Release 14). The program was successfully applied

Rostock, Universität

176

2011 Biomass Program Platform Peer Review: Biochemical Conversion  

Energy.gov (U.S. Department of Energy (DOE))

This document summarizes the recommendations and evaluations provided by an independent external panel of experts at the U.S. Department of Energy Biomass Program’s Biochemical Platform Review meeting, held on February 14–16, 2011, at the Crowne Plaza Hotel in Downtown Denver, Colorado.

177

Characterization and application of vortex flow adsorption for simplification of biochemical product downstream processing  

E-Print Network (OSTI)

One strategy to reduce costs in manufacturing a biochemical product is simplification of downstream processing. Biochemical product recovery often starts from fermentation broth or cell culture. In conventional downstream ...

Ma, Junfen, 1972-

2003-01-01T23:59:59.000Z

178

National Bioenergy Center Biochemical Platform Integration Project: Quarterly Update #26, January - March 2010  

SciTech Connect

January-March, 2010 edition of the National Bioenergy Center's Biochemical Platform Integration Project quarterly newsletter. Issue topics: understanding and improving sugar measurements in biomass hydrolysates; expansion of the NREL/DOE Biochemical Pilot Plant.

Schell, D.

2010-04-01T23:59:59.000Z

179

A numerical theory of lattice gas and lattice Boltzmann methods in the computation of solutions to nonlinear advective-diffusive systems  

SciTech Connect

A numerical theory for the massively parallel lattice gas and lattice Boltzmann methods for computing solutions to nonlinear advective-diffusive systems is introduced. The convergence theory is based on consistency and stability arguments that are supported by the discrete Chapman-Enskog expansion (for consistency) and conditions of monotonicity (in establishing stability). The theory is applied to four lattice methods: Two of the methods are for some two-dimensional nonlinear diffusion equations. One of the methods is for the one-dimensional lattice method for the one-dimensional viscous Burgers equation. And one of the methods is for a two-dimensional nonlinear advection-diffusion equation. Convergence is formally proven in the L{sub 1}-norm for the first three methods, revealing that they are second-order, conservative, conditionally monotone finite difference methods. Computational results which support the theory for lattice methods are presented. In addition, a domain decomposition strategy using mesh refinement techniques is presented for lattice gas and lattice Boltzmann methods. The strategy allows concentration of computational resources on regions of high activity. Computational evidence is reported for the strategy applied to the lattice gas method for the one-dimensional viscous Burgers equation. 72 refs., 19 figs., 28 tabs.

Elton, A.B.H.

1990-09-24T23:59:59.000Z

180

The analytical energy gradient scheme in the Gaussian based Hartree-Fock and density functional theory for two-dimensional systems using fast multipole method  

SciTech Connect

The analytical total energy gradient scheme for the Hartree-Fock and density functional crystalline orbital theory is formulated for infinitely extended periodic systems of general dimensions and implemented for those of two dimensions. Two major differences between the analytical gradient scheme for extended systems and that for molecular systems are described in detail. The first is the treatment of the long-range Coulomb interactions, which arises due to the infinite nature of the systems. The long-range effect is efficiently included by the multipole expansion technique and its extension, the fast multipole method The use of the fast multipole method enables us to include the long range effect up to the order of micro meter to millimeter region around the reference unit cell by virtue of the logarithmic cost scaling of the algorithm achieved by regrouping distant multipoles together and reducing the number of pairwise interactions. The second is the formulation of analytical gradient expressions with respect to unit cell parameters. In the HF theory they can be calculated by accumulating forces acting on atoms multiplied by some appropriate factors, while there is an extra term which requires a special numerical treatment in grid-based density functional theory. Specifically, it is shown that the quadrature weight derivatives do not vanish even in the limit of infinitely fine grid, when calculating the gradients with respect to unit cell parameters, and are essential in evaluating those gradients. Combining the analytical gradient scheme and an efficient inclusion of the long-range interaction makes it feasible to perform a full geometry optimization of extended systems at ab initio levels.

Tobita, Motoi; Hirata, So; Bartlett, Rodney J.

2003-04-01T23:59:59.000Z

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


181

Decision Theory for Performance Evaluation of New Technologies Incorporating Institutional Issues: Application to Traffic Control Implementation  

E-Print Network (OSTI)

Welfare Functions," Theory and Decision, 6, 311- IBI (1995),system evaluation and decision-theory techniques areevaluation and decision-theory. Transportation System

Mattingly, Stephen P

2000-01-01T23:59:59.000Z

182

Energy-economic theory and mathematical models for combining the systems of man and nature, case study: The urban region of Miami, Florida  

Science Journals Connector (OSTI)

This paper presents a study of the urban region of Miami, Fla. with consideration of energy flow and the relationship between energy theory and economics. Much of this work is based on the theories and work of Dr Howard T. Odum at the University of Florida. A theory of energy quality is presented which is an attempt to relate energies of different concentrations in their ability to do work. This theory allows comparison of the systems of man and nature. Another theory is proposed which seeks to describe the ability of a region to compete based on its flows of natural and fossil fuel energies. Economic, natural system, and energy data were compiled for the Miami urban region from 1950–1972. Cross-correlation of this data showed significant levels of correlation between the rate of change of fossil fuel use and the rates of change of population, budget, sales tax, income, building structure, and number of telephones. Calculation of several urban indicators for 1972 showed a fossil fuel energy density of 300 kcal/m2/day in the urbanized area, a per capita energy consumption of 53.8 × 106 kcal/capita/year, a ratio of natural to fossil fuel energies of 0.25, a developed area of 260 miles2 (673.4 km2), and a rate of development of 6.5 miles2 (16.8 km2) per year. An overall model of Miami is presented with flows and storages quantified for 1972. Based on this model a simpler model was simulated on an analog computer. This model consisted of a system of first-order in time, non-linear differential equations which included fossil fuel energy flows, main economic flows, external price functions, building structure, natural energies, and population. This model was simulated for several linearly increasing future price functions and several sets of future energy functions. Natural energies within the region were calculated by determining the land areas associated with various ecosystem types. Estimating the productivities of these systems on a per area basis allowed calculation of total energy flows. The energies associated with winds, tides, waves, and fresh/salt water concentration gradients were also determined. It was found that the ratio of natural to fossil fuel energy changed from 1.77 in 1950 to 0.25 in 1972.

James Zucchetto

1975-01-01T23:59:59.000Z

183

Social Choice Theory Decision Models with Multiple Criteria  

E-Print Network (OSTI)

Social Choice Theory Decision Models with Multiple Criteria Elise Bonzon 2013-2014 LIPADE / 39 Social Choice Theory #12;Social choice theory Social choice theory Research of a mechanism Choice Theory #12;Social choice theory Social choice theory Research of a mechanism (electoral system

Bonzon, Elise

184

Excitation energies with linear response density matrix functional theory along the dissociation coordinate of an electron-pair bond in N-electron systems  

SciTech Connect

Time dependent density matrix functional theory in its adiabatic linear response formulation delivers exact excitation energies ?{sub ?} and oscillator strengths f{sub ?} for two-electron systems if extended to the so-called phase including natural orbital (PINO) theory. The Löwdin-Shull expression for the energy of two-electron systems in terms of the natural orbitals and their phases affords in this case an exact phase-including natural orbital functional (PILS), which is non-primitive (contains other than just J and K integrals). In this paper, the extension of the PILS functional to N-electron systems is investigated. With the example of an elementary primitive NO functional (BBC1) it is shown that current density matrix functional theory ground state functionals, which were designed to produce decent approximations to the total energy, fail to deliver a qualitatively correct structure of the (inverse) response function, due to essential deficiencies in the reconstruction of the two-body reduced density matrix (2RDM). We now deduce essential features of an N-electron functional from a wavefunction Ansatz: The extension of the two-electron Löwdin-Shull wavefunction to the N-electron case informs about the phase information. In this paper, applications of this extended Löwdin-Shull (ELS) functional are considered for the simplest case, ELS(1): one (dissociating) two-electron bond in the field of occupied (including core) orbitals. ELS(1) produces high quality ?{sub ?}(R) curves along the bond dissociation coordinate R for the molecules LiH, Li{sub 2}, and BH with the two outer valence electrons correlated. All of these results indicate that response properties are much more sensitive to deficiencies in the reconstruction of the 2RDM than the ground state energy, since derivatives of the functional with respect to both the NOs and the occupation numbers need to be accurate.

Meer, R. van; Gritsenko, O. V. [Faculty of Exact Sciences, Theoretical Chemistry, VU University, Amsterdam (Netherlands) [Faculty of Exact Sciences, Theoretical Chemistry, VU University, Amsterdam (Netherlands); WCU Program, Dep. of Chemistry, Pohang Univ. of Science and Techn., Pohang (Korea, Republic of); Baerends, E. J. [Faculty of Exact Sciences, Theoretical Chemistry, VU University, Amsterdam (Netherlands) [Faculty of Exact Sciences, Theoretical Chemistry, VU University, Amsterdam (Netherlands); WCU Program, Dep. of Chemistry, Pohang Univ. of Science and Techn., Pohang (Korea, Republic of); Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589 (Saudi Arabia)

2014-01-14T23:59:59.000Z

185

Bridging over p-wave pi-production and weak processes in few-nucleon systems with chiral perturbation theory  

E-Print Network (OSTI)

I study an aspect of chiral perturbation theory (\\chi PT) which enables one to ``bridge'' different reactions. That is, an operator fixed in one of the reactions can then be used to predict the other. For this purpose, I calculate the partial wave amplitude for the p-wave pion production (pp\\to pn\\pi^+) using the pion production operator from the lowest and the next nonvanishing orders. The operator includes a contact operator whose coupling has been fixed using a matrix element of a low-energy weak process (pp\\to de^+\

Satoshi X. Nakamura

2008-05-13T23:59:59.000Z

186

Activity-based knowledge contexts : an exploration of Niklas Luhmann's autopoietic social theories for knowledge management practice and systems.  

E-Print Network (OSTI)

??[Truncated abstract] The dominant approaches to knowledge management practice and the design of knowledge management systems are driven by a resource-based view of knowledge. In… (more)

Young, Regit

2006-01-01T23:59:59.000Z

187

Joint Theory Institute  

NLE Websites -- All DOE Office Websites (Extended Search)

Program General Info Program General Info Registration Info Directions to Argonne Dynamics of Symmetry Breaking A Workshop sponsored by the ANL/UChicago Joint Theory Institute April 13-17, 2009 Argonne National Laboratory, IL The Joint Theory Institute (JTI) is a multi-disciplinary research institution jointly supported at the University of Chicago and Argonne National Laboratory to enhance collaborative research between both institutions in the broad area of theory. This year JTI sponsors a workshop the aim of which is to explore the dynamics of symmetry breaking in a broad range of systems from nuclear physics to string theory, using theoretical insights such as Dyson-Schwinger equations formalism, gauge/gravity duality and lattice QCD. We will focus on systems which exhibit dynamical symmetry breaking and will cover topics essential for understanding nonperturbative QCD and physics of quark-gluon plasma.

188

Biochemical Conversion Pilot Plant (Fact Sheet), NREL (National Renewable Energy Laboratory)  

NLE Websites -- All DOE Office Websites (Extended Search)

Biochemical Conversion Biochemical Conversion Pilot Plant A pilot-scale conversion plant for researchers, industry partners, and stakeholders to test a variety of biochemical conversion processes and technologies. NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. In the biochemical conversion pilot plant, NREL's engineers and scientists focus on all aspects of the efficiency and cost reduction of biochemical conversion processes. Our capabilities accommodate research from bench-scale to pilot-scale (up to one ton per day). NREL's biochemical conversion pilot plant is located in the Integrated Biorefinery Research Facility (IBRF). Photo by Dennis Schroeder, NREL/PIX 20248

189

Boussinesq Equations and Other Systems for Small-Amplitude Long Waves in Nonlinear Dispersive Media. I: Derivation and Linear Theory  

Science Journals Connector (OSTI)

...Considered herein are a number of variants of the classical Boussinesq system and their higher-order generalizations. Such equations were first derived by Boussinesq to describe the two-way propagation of ... ...

Bona; Chen; Saut

2002-08-01T23:59:59.000Z

190

Transition dynamics between the multiple steady states in natural ventilation systems : from theories to applications in optimal controls  

E-Print Network (OSTI)

In this study, we investigated the multiple steady state behavior, an important observation in numerical and experimental studies in natural ventilation systems. The-oretical models are developed and their applications in ...

Yuan, Jinchao

2007-01-01T23:59:59.000Z

191

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS-I: FUNDAMENTAL THEORY AND APPLICATIONS VOL. 39, NO. 9, SEPTEMBER 1992762 torics, Lecture Notes in Mathematics, 406, New York, pp. 247-261,  

E-Print Network (OSTI)

Abstruct-When a generator of a heavily loaded electric power system reaches a reactive power limit, the system can become immediately unstable and a dynamic voltage collapse leading to blackout may follow. We theory of saddle node and transcritical bifurcations. Load power margin calculations can be mis- leading

Dobson, Ian

192

Structure and Biochemical Activities of Escherichia coli MgsA  

SciTech Connect

Bacterial 'maintenance of genome stability protein A' (MgsA) and related eukaryotic enzymes play important roles in cellular responses to stalled DNA replication processes. Sequence information identifies MgsA enzymes as members of the clamp loader clade of AAA{sup +} proteins, but structural information defining the family has been limited. Here, the x-ray crystal structure of Escherichia coli MgsA is described, revealing a homotetrameric arrangement for the protein that distinguishes it from other clamp loader clade AAA{sup +} proteins. Each MgsA protomer is composed of three elements as follows: ATP-binding and helical lid domains (conserved among AAA{sup +} proteins) and a tetramerization domain. Although the tetramerization domains bury the greatest amount of surface area in the MgsA oligomer, each of the domains participates in oligomerization to form a highly intertwined quaternary structure. Phosphate is bound at each AAA{sup +} ATP-binding site, but the active sites do not appear to be in a catalytically competent conformation due to displacement of Arg finger residues. E. coli MgsA is also shown to form a complex with the single-stranded DNA-binding protein through co-purification and biochemical studies. MgsA DNA-dependent ATPase activity is inhibited by single-stranded DNA-binding protein. Together, these structural and biochemical observations provide insights into the mechanisms of MgsA family AAA{sup +} proteins.

Page, Asher N.; George, Nicholas P.; Marceau, Aimee H.; Cox, Michael M.; Keck, James L. (UW)

2012-02-27T23:59:59.000Z

193

E-Print Network 3.0 - attenuate biochemical indices Sample Search...  

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Vanderbilt University Collection: Biology and Medicine 45 Influences of biomass heat and biochemical energy storages on the land surface fluxes and radiative temperature...

194

E-Print Network 3.0 - anhydrase ix biochemical Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

ix biochemical Page: << < 1 2 3 4 5 > >> 1 Prokaryotic carbonic anhydrases Kerry S. Smith *, James G. Ferry Summary: Prokaryotic carbonic anhydrases Kerry S. Smith *, James G....

195

E-Print Network 3.0 - analytical chemistry biochemical Sample...  

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Powered by Explorit Topic List Advanced Search Sample search results for: analytical chemistry biochemical Page: << < 1 2 3 4 5 > >> 1 UNIVERSITY OF CENTRAL FLORIDA Undergraduate...

196

Complex higher order derivative theories  

SciTech Connect

In this work is considered a complex scalar field theory with higher order derivative terms and interactions. A procedure is developed to quantize consistently this system avoiding the presence of negative norm states. In order to achieve this goal the original real scalar high order field theory is extended to a complex space attaching a complex total derivative to the theory. Next, by imposing reality conditions the complex theory is mapped to a pair of interacting real scalar field theories without the presence of higher derivative terms.

Margalli, Carlos A.; Vergara, J. David [Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, Apartado Postal 70-543, Mexico 04510 DF (Mexico)

2012-08-24T23:59:59.000Z

197

A detailed and unified treatment of spin-orbit systems using tools distilled from the theory of bundles  

E-Print Network (OSTI)

We return to our study \\cite{BEH} of invariant spin fields and spin tunes for polarized beams in storage rings but in contrast to the continuous-time treatment in \\cite{BEH}, we now employ a discrete-time formalism, beginning with the $\\rm{Poincar\\acute{e}}$ maps of the continuous time formalism. We then substantially extend our toolset and generalize the notions of invariant spin field and invariant frame field. We revisit some old theorems and prove several theorems believed to be new. In particular we study two transformation rules, one of them known and the other new, where the former turns out to be an $SO(3)$-gauge transformation rule. We then apply the theory to the dynamics of spin-$1/2$ and spin-$1$ particle bunches and their density matrix functions, describing semiclassically the particle-spin content of bunches. Our approach thus unifies the spin-vector dynamics from the T-BMT equation with the spin-tensor dynamics and other dynamics. This unifying aspect of our approach relates the examples elega...

Heinemann, Klaus; Ellison, James A; Vogt, Mathias

2015-01-01T23:59:59.000Z

198

Review: a review of culture in information systems research: toward a theory of information technology culture conflict  

Science Journals Connector (OSTI)

An understanding of culture is important to the study of information technologies in that culture at various levels, including national, organizational, and group, can influence the successful implementation and use of information technology. Culture ... Keywords: IT values, information systems, national culture, organizational culture

Dorothy E. Leidner; Timothy Kayworth

2006-06-01T23:59:59.000Z

199

Synthesis of controllers for non-minimum phase and unstable systems using non-sequential MIMO quantitative feedback theory  

E-Print Network (OSTI)

such systems pose serious difficulties in controller synthesis for performance and stability. In spite of the added degrees of freedom the MIMO case also poses difficulties as has been shown in the stabilization of the X-29 aircraft. When using the MIMO QFT...

Lan, Chenyang

2005-08-29T23:59:59.000Z

200

RETRAN-02: a program for transient thermal-hydraulic analysis of complex fluid flow systems. Volume 1. Theory and numerics (Revision 2). [PWR; BWR  

SciTech Connect

RETRAN-02 represents a significant achievement in the development of a versatile and reliable computer program for use in best-estimate transient thermal-hydraulic analysis of LWR systems. The RETRAN-02 computer program is an extension of the RETRAN-01 program designed to provide analysis capabilities for: (1) BWR and PWR transients; (2) small-break loss-of-coolant accidents; (3) balance of plant modeling; and (4) anticipated transients without scram, while maintaining the analysis capabilities of the predecessor code. This report (the first of a four-volume computer code manual) describes the theory and numerical algorithms of the RETRAN-02 code. The three companion volumes describe the programming aspects, the programming details, and the verification and qualification performed with RETRAN.

McFadden, J.H.; Narum, R.E.; Peterson, C.E.; Noble, C.; Farman, R.F.; McClure, J.A.; Paulsen, M.P.; Richert, K.D.; Hughes, E.D.; Gose, G.C.

1984-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

A Universal Hamilton-Jacobi Theory  

E-Print Network (OSTI)

In this paper we develop a Hamilton-Jacobi theory in the setting of almost Poisson manifolds. The theory extends the classical Hamilton-Jacobi theory and can be also applied to very general situations including nonholonomic mechanical systems and time dependent systems with external forces.

Manuel de León; David Martín de Diego; Miguel Vaquero

2012-09-24T23:59:59.000Z

202

Theory and experiments on the effects of perturbations on nonlinear chemical systems: Generation of multiple attractors and efficiency  

Science Journals Connector (OSTI)

Periodic perturbations are applied to the input fluxes of reactants in a system which exhibits autonomous oscillations the combustion of acetaldehyde (ACH) and oxygen and a system which exhibits damped oscillations the combustion of methane and oxygen. The ACH system is studied by experiments and numerical analysis and the methanesystem is studied by numerical analysis. The periodic perturbations are in the form of a two?term Fourier series. Such perturbations may generate multiple attractors which are either periodic or chaotic. We discuss two types of bistable responses: a new phase bistability in which a subharmonic frequency is added to a sinusoidal perturbation at different phases relative to the periodic response; and jump phenomena in which the resonant frequency of a nonlinear oscillator depends on the amplitude of the periodic perturbation. Both the ACH and the methanesystems confirm the phase bistability. The additional complex behavior of bistability due to jump phenomena is seen only in calculations in the methanesystem. In both types of bistability a hysteresis loop is formed as we vary the form of the periodic perturbation. In the methanesystem we find period doubling to chaos occuring on one branch of the hysteresis loop while the other branch remains periodic. The methanesystem has been studied in the context of the efficiency of power production. We calculate the efficiency corresponding to each bistable attractor and find one branch of each pair to be the more efficient mode of operation. In the case of the coexisting periodic and chaotic attractors the chaotic attractor is the more efficient mode of operation.

Allen Hjelmfelt; Robert H. Harding; Kim K. Tsujimoto; John Ross

1990-01-01T23:59:59.000Z

203

155:427 CHEMICAL & BIOCHEMICAL ENGINEERING DESIGN AND ECONOMICS I FALL 2014 (3 credits)  

E-Print Network (OSTI)

155:427 CHEMICAL & BIOCHEMICAL ENGINEERING DESIGN AND ECONOMICS I FALL 2014 (3 credits) Professor:428 Chemical & Biochemical Engineering Design & Economics II). Course objectives · This is the first of two (Ms. Chaudhury), C-137 Course description Chemical engineering fundamentals are integrated

Muzzio, Fernando J.

204

Spatial Querying of Imaging Mass Spectrometry Data for the Biochemical Characterization of Anatomical Regions in Tissue  

E-Print Network (OSTI)

Spatial Querying of Imaging Mass Spectrometry Data for the Biochemical Characterization tissue section. In this paper we develop methods that enable spatial querying of MSI data. The objective that adds spatial information to mass spectral biochemical analysis. It delivers insight into the spatial

205

Milking Diatoms for Sustainable Energy: Biochemical Engineering versus Gasoline-Secreting Diatom Solar Panels  

Science Journals Connector (OSTI)

Milking Diatoms for Sustainable Energy: Biochemical Engineering versus Gasoline-Secreting Diatom Solar Panels ... In this communication, we propose ways of harvesting oil from diatoms, using biochemical engineering and also a new solar panel approach that utilizes genomically modifiable aspects of diatom biology, offering the prospect of “milking” diatoms for sustainable energy by altering them to actively secrete oil products. ...

T. V. Ramachandra; Durga Madhab Mahapatra; Karthick B; Richard Gordon

2009-06-02T23:59:59.000Z

206

Optimal adaptive control of (bio)chemical reactors: past, present and future  

E-Print Network (OSTI)

Optimal adaptive control of (bio)chemical reactors: past, present and future Ilse Y. Smets Abstract In this paper an overview of optimal adaptive control of (bio)chemical reactors is presented. Following the paradigm of the Minimum Principle of Pontryagin the derivation of optimal control sequences

Bastin, Georges

207

Application of Biochemical and Physiological Indicators for Assessing Recovery of Fish Populations in a Disturbed Stream  

SciTech Connect

Recovery dynamics in a previously disturbed streamwere investigated to determine the influence of a series of remedial actions on stream recovery and to evaluate the potential application of bioindicators as an environmental management tool. A suite of bioindicators, representing five different functional response groups, were measured annually for a sentinel fish species over a 15 year period during which a variety of remedial and pollution abatement actions were implemented. Trends in biochemical, physiological, condition, growth, bioenergetic, and nutritional responses demonstrated that the health status of a sentinel fish species in the disturbed stream approached that of fish in the reference stream by the end of the study. Two major remedial actions, dechlorination and water flow management, had large effects on stream recovery resulting in an improvement in the bioenergetic, disease, nutritional, and organ condition status of the sentinel fish species. A subset of bioindicators responded rather dramatically to temporal trends affecting all sites, but some indicators showed little response to disturbance or to restoration activities. In assessing recovery of aquatic systems, application of appropriate integrative structural indices along with a variety of sensitive functional bioindicators should be used to understand the mechanistic basis of stress and recovery and to reduce the risk of false positives. Understanding the mechanistic processes involved between stressors, stress responses of biota, and the recovery dynamics of aquatic systems reduces the uncertainty involved in environmental management and regulatory decisions resulting in an increased ability to predict the consequences of restoration and remedial actions for aquatic systems.

Adams, Marshall [ORNL; Ham, Kenneth [ORNL

2011-01-01T23:59:59.000Z

208

Application of Biochemical and Physiological Indicators for Assessing Recovery of Fish Populations in a Disturbed Stream  

SciTech Connect

Recovery dynamics in a previously disturbed streamwere investigated to determine the influence of a series of remedial actions on stream recovery and to evaluate the potential application of bioindicators as an environmental management tool. A suite of bioindicators, representing five different functional response groups, were measured annually for a sentinel fish species over a 15 year period during which a variety of remedial and pollution abatement actions were implemented. Trends in biochemical, physiological, condition, growth, bioenergetic, and nutritional responses demonstrated that the health status of a sentinel fish species in the disturbed stream approached that of fish in the reference stream by the end of the study. Two major remedial actions, dechlorination and water flow management, had large effects on stream recovery resulting in an improvement in the bioenergetic, disease, nutritional, and organ condition status of the sentinel fish species. A subset of bioindicators responded rather dramatically to temporal trends affecting all sites, but some indicators showed little response to disturbance or to restoration activities. In assessing recovery of aquatic systems, application of appropriate integrative structural indices along with a variety of sensitive functional bioindicators should be used to understand the mechanistic basis of stress and recovery and to reduce the risk of false positives. Understanding the mechanistic processes involved between stressors, stress responses of biota, and the recovery dynamics of aquatic systems reduces the uncertainty involved in environmental management and regulatory decisions resulting in an increased ability to predict the consequences of restoration and remedial actions for aquatic systems.

Adams, S. M.; Ham, Kenneth D.

2011-06-01T23:59:59.000Z

209

Modeling the Physical and Biochemical Influence of Ocean Thermal Energy Conversion Plant Discharges into their Adjacent Waters  

Energy.gov (U.S. Department of Energy (DOE))

Modeling the Physical and Biochemical Influence of Ocean Thermal Energy Conversion Plant Discharges into their Adjacent Waters

210

In Theory  

NLE Websites -- All DOE Office Websites (Extended Search)

5, 1998 5, 1998 Number 11 For every fundamental particle, the theory of supersymmetry proposes a supersymmetric partner, a "sparticle" in SUSY jargon. The electron, e, for example, has a SUSY spartner, the selectron ~ e. Would every Fermilab theorist have a SUSY "stheorist"? Probably not, but theorists worldwide will be watching Tevatron Run II for the first experimental evidence for SUSY. In Theory f INSIDE 2 Supersymmetry 7 Supersymmetry Workshop 8 MiniBooNE 10 Fishing 12 Paperless Papers 14 CDF Party The Fermilab Stheory Group ~ The Fermilab Theory Group by Meher Antia Without resorting to tricky mathematics or exotic physics, anyone can see that much of the stuff the world is made of has mass. Things can be touched and felt; they have some bulk, unlike, say, light which is intangible and

211

PP Theory  

NLE Websites -- All DOE Office Websites (Extended Search)

Present Theory of Present Theory of Fundamental Particles and Forces An Article Written Originally for Midlevel Teachers Back Before World War II, it was known that the nucleus was composed of closely packed protons and neutrons, but little was known about the "strong force" that kept them together. From 1950 to 1970, accelerators were built which were designed to probe nuclei with higher speed and more energetic, charged particles such as electrons and protons. The result was that hundreds of new particles were discovered and their properties defined. In 1963, a theory was proposed that a major group of these particles, called hadrons, could be thought of as made from a few, more fundamental particles, called quarks. Protons and neutrons are members of the hadron

212

INDUCED BIOCHEMICAL INTERACTIONS IN IMMATURE AND BIODEGRADED HEAVY CRUDE OILS  

SciTech Connect

Studies in which selective chemical markers have been used to explore the mechanisms by which biocatalysts interact with heavy crude oils have shown that the biochemical reactions follow distinct trends. The term biocatalyst refers to a group of extremophilic microorganisms which, under the experimental conditions used, interact with heavy crude oils to (1) cause a redistribution of hydrocarbons, (2) cause chemical changes in oil fractions containing sulfur compounds and lower the sulfur content, (3) decrease organic nitrogen content, and (4) decrease the concentration of trace metals. Current data indicate that the overall effect is due to simultaneous reactions yielding products with relatively higher concentration of saturates and lower concentrations of aromatics and resins. The compositional changes depend on the microbial species and the chemistry of the crudes. Economic analysis of a potential technology based on the available data indicate that such a technology, used in a pre-refinery mode, may be cost efficient and promising. In the present paper, the background of oil biocatalysis and some recent results will be discussed.

PREMUZIC,E.T.; LIN,M.S.; BOHENEK,M.; JOSHI-TOPE,G.; SHELENKOVA,L.; ZHOU,W.M.

1998-10-27T23:59:59.000Z

213

Induced biochemical interactions in immature and biodegraded heavy crude oils  

SciTech Connect

Studies in which selective chemical markers have been used to explore the mechanisms by which biocatalysts interact with heavy crude oils have shown that the biochemical reactions follow distinct trends. The term biocatalyst refers to a group of extremophilic microorganisms which, under the experimental conditions used, interact with heavy crude oils to (1) cause a redistribution of hydrocarbons, (2) cause chemical changes in oil fractions containing sulfur compounds and lower the sulfur content, (3) decrease organic nitrogen content, and (4) decrease the concentration of trace metals. Current data indicate that the overall effect is due to simultaneous reactions yielding products with relatively higher concentration of saturates and lower concentrations of aromatics and resins. The compositional changes depend on the microbial species and the chemistry of the crudes. Economic analysis of a potential technology based on the available data indicate that such a technology, used in a pre-refinery mode, may be cost efficient and promising. In the present paper, the background of oil biocatalysis and some recent results will be discussed.

Premuzic, E.T.; Lin, M.S.; Bohenek, M.; Joshi-Tope, G.; Shelenkova, L.; Zhou, W.M.

1998-11-01T23:59:59.000Z

214

RETRAN-02: A program for transient thermal-hydraulic analysis of complex fluid flow systems: Volume 1, Theory and numerics (Revision 4)  

SciTech Connect

RETRAN-02 represents a significant achievement in the development of a versatile and reliable computer program for use in best-estimate transient thermal-hydraulic analysis of light water reactor systems. The RETRAN-02 computer program is an extension of the RETRAN-01 program designed to provide analysis capabilities for (1) BWR and PWR transients, (2) small break loss of coolant accidents, (3) balance of plant modeling, and (4) anticipated transients without scram, while maintaining the analysis capabilities of the predecessor code. The RETRAN-02 computer code is constructed in a semimodular and dynamic dimensioned form where additions to the code can be easily carried out as new and improved models are developed. The NRC, at the request of a group of utilities, had Argonne National Laboratory perform a technical review of RETRAN-01 MOD003 and RETRAN-02 MOD002. This review was completed in May 1983, and the NRC issued a Safety Evaluation Report on RETRAN in September 1984. Revision 4 of the RETRAN-02 computer code manuals describes the MOD005 version of the code. This report (the first of a four-volume computer code manual) describes the theory and numerical algorithms of the RETRAN-02 code. The three companion volumes describe the programming details, the user input requirements and sample problem input and output files, and the verification and qualification performed with RETRAN. 186 refs., 75 figs., 30 tabs.

McFadden, J.H.; Narum, R.E.; Peterson, C.E.; Noble, C.; Farman, R.F.; McClure, J.A.; Paulsen, M.P.; Richert, K.D.; Hughes, E.D.; Gose, G.C.

1988-11-01T23:59:59.000Z

215

E-Print Network 3.0 - asymmetric particle systems Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Summary: systems (theory), stochastic particle dynamics (theory), transport processesheat transfer (theory) Ar... -driven singularities in asymmetric exclusion Figure 1....

216

Response to Comment on "Global Biodiversity, Biochemical Kinetics,  

E-Print Network (OSTI)

to be a comprehensive theory that could ac- count for all patterns and processes of species diversity. It was intended of mechanistic pro- cess that could, by itself or in interaction with other processes, account for this pattern description of several interrelated phenomena." It allowed us to make and val- idate precise quantitative

Allen, Andrew P.

217

DENSITY FUNCTIONAL THEORY, THE MODERN TREATMENT OF  

E-Print Network (OSTI)

DENSITY FUNCTIONAL THEORY, THE MODERN TREATMENT OF ELECTRON CORRELATIONS E.K.U. Gross and Stefan The basic idea of density functional theory is to describe a many-electron system exclusively and completely-consistent scheme, known as the Kohn-Sham scheme [2], is the heart of modern density functional theory

Gross, E.K.U.

218

Systems theory in musical acoustics  

Science Journals Connector (OSTI)

Recent digital synthesis techniques for woodwind bores and strings (bowed plucked and the like) have been devised using long delay lines and sparsely distributed filter elements to efficiently simulate solutions to the one?dimensional wave equation. In the simplest case a string or bore can be modeled using a single delay line and a single low?order digital filter. This presentation describes techniques used to simulate specific physical phenomena in the context of these models. As is well known in the lossless case solutions to the 1?D wave equation can be expressed in terms of left?going and right?going traveling waves and these are efficiently simulated using pure delay lines plus perhaps a sign inversion at a termination. Abutting two waveguides of differing characteristic impedance gives rise to a scattering junction at the interface leading to the ladder and lattice digital filter structures used extensively in the field of signal processing. When there are losses or when string stiffness is important there is linear filtering along the waveguide. Because linear time?invariant filters commute the distributed losses and dispersion can be lumped at convenient places in the waveguide network without changing an input?output transfer function. Once they are thus consolidated it is usually possible especially in audio applications to find a very accurate approximation using a low?order lumped digital filter in place of the distributed filtering. On top of this physically accurate yet efficient model it is straightforward to introduce nonlinear extensions such as (1) bow?string slippage due to absolute string displacement (2) pitch decay due to the gradual decline of the average string tension (3) wave?front sharpening due to increased speed of sound at higher air pressures (4) closure forces on double reeds and vocal folds due to the Bernoulli effect (5) heat conduction losses and (6) spontaneous generation of turbulence due to high volume velocity through a narrow aperture.

Julius O. Smith III

1990-01-01T23:59:59.000Z

219

Roadmaps for All Atoms in Biochemical Reactions | U.S. DOE Office of  

Office of Science (SC) Website

Roadmaps for All Atoms in Biochemical Reactions Roadmaps for All Atoms in Biochemical Reactions Biological and Environmental Research (BER) BER Home About Research Facilities Science Highlights Searchable Archive of BER Highlights External link Benefits of BER Funding Opportunities Biological & Environmental Research Advisory Committee (BERAC) News & Resources Contact Information Biological and Environmental Research U.S. Department of Energy SC-23/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3251 F: (301) 903-5051 E: sc.ber@science.doe.gov More Information » September 2012 Roadmaps for All Atoms in Biochemical Reactions How atoms move in biochemical reactions - a fast and accurate method to model all the atoms. Print Text Size: A A A Subscribe FeedbackShare Page Click to enlarge photo. Enlarge Photo

220

BIOENERGY/BIOFUELS/BIOCHEMICALS Chromatographic determination of 1, 4-b-xylooligosaccharides  

E-Print Network (OSTI)

BIOENERGY/BIOFUELS/BIOCHEMICALS Chromatographic determination of 1, 4-b. Li � R. Kumar � C. E. Wyman BioEnergy Science Center, Oak Ridge, TN 37831, USA 123 J Ind Microbiol

California at Riverside, University of

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


221

Knowledge-based integrative framework for hypothesis formation in biochemical networks  

Science Journals Connector (OSTI)

The current knowledge about biochemical networks is largely incomplete. Thus biologists constantly need to revise or extend existing knowledge. These revision or extension are first formulated as theoretical hypotheses, then verified experimentally. ...

Nam Tran; Chitta Baral; Vinay J. Nagaraj; Lokesh Joshi

2005-07-01T23:59:59.000Z

222

Prolonged Chest Pain and the Early Detection of Myocardial Damage by Novel Biochemical Markers — Practical Considerations  

Science Journals Connector (OSTI)

In recent years rapid analytical techniques have been developed which allow accurate measurement of biochemical serum markers useful for the detection of early myocardial damage and acute myocardial infarction...

Robbert J. de Winter

1998-01-01T23:59:59.000Z

223

Fundamentals of Dynamical Systems  

Science Journals Connector (OSTI)

For the purposes of control system design, analysis, test, and repair, the most important part of the very broad subject known as system theory is the theory of dynamical systems. It is difficult to give a pre...

William S. Levine

2005-01-01T23:59:59.000Z

224

Biochemical and photochemical control of leaf disk expansion  

E-Print Network (OSTI)

) May 1957 -i- ACKNOWLEDGEMENTS The writer wishes to express his sincere appreciation to Professor James L. Liverman who directed this research and obtained grants in aid from the National Science Foundation and U0 S. Atomic Energy Commission... internode growth in pea (7), bean (8,9), oat (10), and barley (11). Theories advanced for this light mediated growth reduction are that red light causes a decreased amount of available auxin (12), an increased IAA oxidase activity (12), or a decreased...

Scott, Ralph A.

1957-01-01T23:59:59.000Z

225

Role of exchange in density-functional theory for weakly interacting systems: Quantum Monte Carlo analysis of electron density and interaction energy  

E-Print Network (OSTI)

We analyze the density-functional theory (DFT) description of weak interactions by employing diffusion and reptation quantum Monte Carlo (QMC) calculations, for a set of benzene-molecule complexes. While the binding energies ...

Grossman, Jeffrey C.

226

Comparison of Selective Culturing and Biochemical Techniques for Measuring Biological Activity in Geothermal Process Fluids  

SciTech Connect

For the past three years, scientists at the Idaho National Engineering and Environmental Laboratory have been conducting studies aimed at determining the presence and influence of bacteria found in geothermal plant cooling water systems. In particular, the efforts have been directed at understanding the conditions that lead to the growth and accumulation of biomass within these systems, reducing the operational and thermal efficiency. Initially, the methods selected were based upon the current practices used by the industry and included the collection of water quality parameters, the measurement of soluble carbon, and the use of selective medial for the determination of the number density of various types of organisms. This data has been collected on a seasonal basis at six different facilities located at the Geysers’ in Northern California. While this data is valuable in establishing biological growth trends in the facilities and providing an initial determination of upset or off-normal conditions, more detailed information about the biological activity is needed to determine what is triggering or sustaining the growth in these facilities in order to develop improved monitoring and treatment techniques. In recent years, new biochemical approaches, based upon the analyses of phospholipid fatty acids and DNA recovered from environmental samples, have been developed and commercialized. These techniques, in addition to allowing the determination of the quantity of biomass, also provide information on the community composition and the nutritional status of the organisms. During the past year, samples collected from the condenser effluents of four of the plants from The Geysers’ were analyzed using these methods and compared with the results obtained from selective culturing techniques. The purpose of this effort was to evaluate the cost-benefit of implementing these techniques for tracking microbial activity in the plant study, in place of the selective culturing analyses that are currently the industry standard.

Pryfogle, Peter Albert

2000-09-01T23:59:59.000Z

227

Probabilistic theories with purification  

SciTech Connect

We investigate general probabilistic theories in which every mixed state has a purification, unique up to reversible channels on the purifying system. We show that the purification principle is equivalent to the existence of a reversible realization of every physical process, that is, to the fact that every physical process can be regarded as arising from a reversible interaction of the system with an environment, which is eventually discarded. From the purification principle we also construct an isomorphism between transformations and bipartite states that possesses all structural properties of the Choi-Jamiolkowski isomorphism in quantum theory. Such an isomorphism allows one to prove most of the basic features of quantum theory, like, e.g., existence of pure bipartite states giving perfect correlations in independent experiments, no information without disturbance, no joint discrimination of all pure states, no cloning, teleportation, no programming, no bit commitment, complementarity between correctable channels and deletion channels, characterization of entanglement-breaking channels as measure-and-prepare channels, and others, without resorting to the mathematical framework of Hilbert spaces.

Chiribella, Giulio; D'Ariano, Giacomo Mauro; Perinotti, Paolo [Perimeter Institute for Theoretical Physics, 31 Caroline Street North, Ontario, Ontario N2L 2Y5 (Canada); QUIT Group, Dipartimento di Fisica ''A. Volta'' and INFN Sezione di Pavia, via Bassi 6, 27100 Pavia (Italy)

2010-06-15T23:59:59.000Z

228

Salinas : theory manual.  

SciTech Connect

Salinas provides a massively parallel implementation of structural dynamics finite element analysis, required for high fidelity, validated models used in modal, vibration, static and shock analysis of structural systems. This manual describes the theory behind many of the constructs in Salinas. For a more detailed description of how to use Salinas, we refer the reader to Salinas, User's Notes. Many of the constructs in Salinas are pulled directly from published material. Where possible, these materials are referenced herein. However, certain functions in Salinas are specific to our implementation. We try to be far more complete in those areas. The theory manual was developed from several sources including general notes, a programmer notes manual, the user's notes and of course the material in the open literature.

Walsh, Timothy Francis; Reese, Garth M.; Bhardwaj, Manoj Kumar

2011-11-01T23:59:59.000Z

229

A proposed gravitodynamic theory  

E-Print Network (OSTI)

This paper proposes a gravitodynamic theory because there are similarities between gravitational theory and electrodynamics. Based on Einstein's principle of equivalence, two coordinate conditions are proposed into the four-dimensional line element and transformations. As a consequence,the equation of motion for gravitational force or inertial force has a form similar to the equation of Lorentz force on a charge in electrodynamics. The inertial forces in auniformly rotating system are calculated, which show that the Coriolis force is produced by a magnetic-type gravitational field. We have also calculated the Sagnac effect due to the rotation. These experimental facts strongly support our proposed coordinate conditions. In addition, the gravitodynamic field equations are briefly discussed. Since only four gravitational potentials (3 + 1 split) enter the metric tensor, the gravitodynamic field equations in ``3+1 split" form would be analogous to Maxwell's equations.

T. Chang

1997-03-18T23:59:59.000Z

230

Integrated optical sensor platform for multiparameter bio-chemical analysis  

Science Journals Connector (OSTI)

There is growing demand for robust, reliable, low cost, and easy to use sensor systems that feature multiparameter analysis in many application areas ranging from safety and security...

Lützow, Peter; Pergande, Daniel; Heidrich, Helmut

2011-01-01T23:59:59.000Z

231

Constrained sensitivity theory  

SciTech Connect

In sensitivity and uncertainty analysis of to-be-built reactors it is customary to use k-reset sensitivity functions - accounting for the combined effects of the change (or uncertainty) in the input data and of the alteration in some design variable applied to maintain criticality. Critical reactors are usually subjected to several constraints, such as power peaking factor and breeding ratio constraints, in addition to the criticality constraint. Perturbation theory formulations which can account, simultaneously, for several constraints both in critical reactors and in source driven systems (such as radiation shields and blankets of fusion devices) are presented. All the sensitivity and uncertainty analyses of source driven systems carried out so far used unconstrained sensitivity functions despite the fact that such systems can be also subjected to a variety of constraints.

Greenspan, E.; Williams, M.L.

1980-01-01T23:59:59.000Z

232

Formalizing Synthetic Domain Theory  

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Synthetic Domain Theory (SDT) is a constructive variant of Domain Theory where all functions are continuous following Dana Scott‘s idea of “domains as sets”. Recently there have been suggested more abstract axiomatizations encompassing ... Keywords: LCF, domain theory, formal verification, programming logics, synthetic domain theory, type theory

Bernhard Reus

1999-11-01T23:59:59.000Z

233

Perturbation theory of von Neumann Entropy  

E-Print Network (OSTI)

In quantum information theory, von Neumann entropy plays an important role. The entropies can be obtained analytically only for a few states. In continuous variable system, even evaluating entropy numerically is not an easy task since the dimension is infinite. We develop the perturbation theory systematically for calculating von Neumann entropy of non-degenerate systems as well as degenerate systems. The result turns out to be a practical way of the expansion calculation of von Neumann entropy.

Xiao-yu Chen

2009-02-27T23:59:59.000Z

234

Dark Matter Theory  

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Dark Matter Theory Dark Matter Theory Understanding discoveries at the Energy, Intensity, and Cosmic Frontiers Get Expertise Rajan Gupta (505) 667-7664 Email Bruce Carlsten (505)...

235

Quantum Field Theory & Gravity  

NLE Websites -- All DOE Office Websites (Extended Search)

Field Theory & Gravity Quantum Field Theory & Gravity Understanding discoveries at the Energy, Intensity, and Cosmic Frontiers Get Expertise Rajan Gupta (505) 667-7664 Email...

236

Designing experiments to understand the variability in biochemical reaction networks  

Science Journals Connector (OSTI)

...and show that well-chosen gene induction patterns may allow one to identify...desired moment. L is the extended generator of the stochastic hybrid system...suggests that well-chosen gene induction patterns may allow one to uncover...

2013-01-01T23:59:59.000Z

237

Quantum decision theory as quantum theory of measurement  

E-Print Network (OSTI)

We present a general theory of quantum information processing devices, that can be applied to human decision makers, to atomic multimode registers, or to molecular high-spin registers. Our quantum decision theory is a generalization of the quantum theory of measurement, endowed with an action ring, a prospect lattice and a probability operator measure. The algebra of probability operators plays the role of the algebra of local observables. Because of the composite nature of prospects and of the entangling properties of the probability operators, quantum interference terms appear, which make actions noncommutative and the prospect probabilities non-additive. The theory provides the basis for explaining a variety of paradoxes typical of the application of classical utility theory to real human decision making. The principal advantage of our approach is that it is formulated as a self-consistent mathematical theory, which allows us to explain not just one effect but actually all known paradoxes in human decision making. Being general, the approach can serve as a tool for characterizing quantum information processing by means of atomic, molecular, and condensed-matter systems.

V. I. Yukalov; D. Sornette

2009-03-30T23:59:59.000Z

238

Nutritional, Biochemical, and Pharmaceutical Potential of Proteins and Peptides from Jatropha: Review  

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Nutritional, Biochemical, and Pharmaceutical Potential of Proteins and Peptides from Jatropha: Review ... Increased bioenergy consciousness and high demand for animal products have propelled the search for alternative resources that could meet the dual demands. ... In the following section we discuss the literature available on jatropha cyclic peptides (Table 1) emphasizing chemistry and its potential toward agricultural/pharmaceutical properties. ...

Rakshit K. Devappa; Harinder P. S. Makkar; Klaus Becker

2010-05-13T23:59:59.000Z

239

Biochemical characterization of Cdc6/Orc1 binding to the replication origin of the euryarchaeon  

E-Print Network (OSTI)

Biochemical characterization of Cdc6/Orc1 binding to the replication origin of the euryarchaeon (Cdc6)/Origin Replication Complex subunit 1 (Orc1) proteins share sequence homology with eukaryotic DNA under- stand whether Cdc6/Orc1 functions in an eukaryotic or bacterial-like manner, we have

Berger, James M.

240

Topographic Variations in Biomechanical and Biochemical Properties in the Ankle Joint: An In Vitro Bovine Study  

E-Print Network (OSTI)

Topographic Variations in Biomechanical and Biochemical Properties in the Ankle Joint: An In Vitro the articulating surfaces of the ankle joint and to evaluate the functional and biological properties of engineered neo- cartilage generated using chondrocytes from different locations in the ankle joint. Methods

Athanasiou, Kyriacos

Note: This page contains sample records for the topic "biochemical systems theory" 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

Physiological and biochemical responses of three Veneridae clams exposed to salinity changes  

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Abstract Given their global importance, coastal marine environments are a major focus of concern regarding the potential impacts of climate change, namely due to alterations in seawater salinity. It is known that environmental characteristics, such as salinity, affect immune and physiological parameters of bivalves. Nevertheless, scarce information is available concerning the biochemical alterations associated with salinity changes. For this reason, the present work aimed to evaluate the biochemical responses of three venerid clam species (Venerupis decussata, Venerupis corrugata, Venerupis philippinarum) submitted to salinity changes. The effects on the native (V. decussata and V. corrugata) and invasive (V. philippinarum) species collected from the same sampling site and submitted to the same salinity gradient (0 to 42 g/L) were compared. The results obtained demonstrated that V. corrugata is the most sensitive species to salinity changes and V. decussata is the species that can tolerate a wider range of salinities. Furthermore, our work showed that clams under salinity associated stress can alter their biochemical mechanisms, such as increasing their antioxidant defenses, to cope with the higher oxidative stress resulting from hypo and hypersaline conditions. Among the physiological and biochemical parameters analyzed (glycogen and protein content; lipid peroxidation levels, antioxidant enzymes activity; total, reduced and oxidized glutathione) Catalase (CAT) and especially superoxide dismutase (SOD) showed to be useful biomarkers to assess salinity impacts in clams.

Vanessa Carregosa; Cátia Velez; Amadeu M.V.M. Soares; Etelvina Figueira; Rosa Freitas

2014-01-01T23:59:59.000Z

242

National Bioenergy Center, Biochemical Platform Integration Project: Quarterly Update, Summer 2011 (Newsletter)  

SciTech Connect

Summer 2011 issue of the National Bioenergy Center Biochemical Platform Integration Project quarterly update. Issue topics: evaluating new analytical techniques for measuring soluble sugars in the liquid portion of biomass hydrolysates, and measurement of the fraction of insoluble solids in biomass slurries.

Not Available

2011-09-01T23:59:59.000Z

243

Biochemical Adaptation 169 From: Integrative Physiology in the Proteomics and Post-Genomics Age  

E-Print Network (OSTI)

radicals. Sec- ond, to sustain life, all cells must maintain adequate energy turnover by maintaining suffiBiochemical Adaptation 169 169 From: Integrative Physiology in the Proteomics and Post-Genomics Age of mechanisms and processes that allows organisms to deal with challenges from both internal (e.g., exercise

Storey, Kenneth B.

244

On the likelihood of decompression sickness during H2 biochemical decompression in pigs  

E-Print Network (OSTI)

- bial metabolism (21) 4H2 CO2 3 2H2O CH4 (1) The model presented here differs from earlier models of DCS, and Susan R. Kayar. On the likeli- hood of decompression sickness during H2 biochemical de- compression, researchers have used a variety of models based solely on the physical history of the compression

Fahlman, Andreas

245

Department of Chemical and Biochemical Engineering Institute for Chemicals and Fuels from Alternative Resources  

E-Print Network (OSTI)

. The successful candidate will be an important member of the Institute for Chemicals and Fuels from AlternativeDepartment of Chemical and Biochemical Engineering Institute for Chemicals and Fuels from Alternative Resources The University of Western Ontario Applications are invited for a junior faculty position

Sinnamon, Gordon J.

246

Bio-PEPA: A framework for the modelling and analysis of biological systems  

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In this work we present Bio-PEPA, a process algebra for the modelling and the analysis of biochemical networks. It is a modification of PEPA, originally defined for the performance analysis of computer systems, in order to handle some features of biological ... Keywords: Analysis, Biochemical networks, Modelling, Process algebras

Federica Ciocchetta; Jane Hillston

2009-08-01T23:59:59.000Z

247

Exploring constructivist learning theory and course visualization on computer graphics  

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Constructivist learning theory has shown its advantages on learning system by improving students' interests and ability. In this paper, we introduce some research works of constructivist learning theory and some successful methods from ACM/IEEE-CS ...

Yiming Zhao; Mingmin Zhang; Shu Wang; Yefang Chen

2005-05-01T23:59:59.000Z

248

Presented at the International Joint Conference on Information Systems, Fuzzy Theory and Technology Conference, Atlantic City, N.J. March 2, 2000.  

E-Print Network (OSTI)

published regarding the combination of fuzzy logic (FL) and genetic algorithms (GA) (Herrera and Verdegay 1999). Fuzzy logic is a useful tool for modeling complex systems and deriving useful fuzzy relations systems (Chen 1998) or fuzzy control systems (Tang et. al. 1998); our goal is to maximize the similarity

Bridges, Susan M.

249

Algorithmic Game Theory and Applications  

E-Print Network (OSTI)

, such as the Internet, are operated and built by thousands of large and small entities (autonomous agents), which collab and mathematical economics have been proven to be a powerful modeling tool, which can be applied to understand, a subfield of game theory, asks how one can design systems so that agents' selfish behavior results

Mavronicolas, Marios

250

Quantum Theory of Matter: Superfluids & Superconductors  

E-Print Network (OSTI)

. The electrical resistance of a metal decreases when it is cooled. For a superconductor, the resistance vanishes resistance flux expulsion flux quantisation Superfluids atomic Bose condensates liquid helium theory in condensed matter physics elementary excitations in strongly correlated systems 1 Quantum Theory

251

Biotechnol. Appl. Biochem. (2005) 42, 119131 (Printed in Great Britain) doi:10.1042/BA20040207 119 Clonal evolution of stem and differentiated cells can be  

E-Print Network (OSTI)

Biotechnol. Appl. Biochem. (2005) 42, 119­131 (Printed in Great Britain) doi:10.1042/BA20040207 119

Zandstra, Peter W.

252

Biochemical Insights on Degradation of Arabidopsis DELLA Proteins Gained From a Cell-Free Assay System  

Science Journals Connector (OSTI)

...signaling gene SLEEPY1 are rescued by overexpression of its homologue, SNEEZY. Proc. Natl. Acad. Sci. USA 101: 12771-12776. Sullivan, J.A., Shirasu, K., and Deng, X.W. (2003). The diverse roles of ubiquitin and the 26S proteasome in...

Feng Wang; Danmeng Zhu; Xi Huang; Shuang Li; Yinan Gong; Qinfang Yao; Xiangdong Fu; Liu-Min Fan; Xing Wang Deng

2009-08-28T23:59:59.000Z

253

Non-equilibrium phase transition in mesoscopic biochemical systems: from stochastic to nonlinear dynamics and beyond  

Science Journals Connector (OSTI)

...challenging questions in biological physics is whether non-equilibrium...not smooth itself. So one does not have a phi(x). For...1983 Stochastic processes in physics and chemistry. Amsterdam...54 Gardiner, C. W. 1985 Handbook of stochastic methods. Berlin...

2011-01-01T23:59:59.000Z

254

A systems biology approach identifies the biochemical mechanisms regulating monoterpenoid essential oil composition in peppermint  

Science Journals Connector (OSTI)

...greenhouse with additional lighting from sodium-vapor lights...Sunshine Mix LC1; SunGro Horticulture) in a greenhouse with supplemental lighting from sodium-vapor lights...greenhouse with supplemental % lighting from sodium vapor lights...

Rigoberto Rios-Estepa; Glenn W. Turner; James M. Lee; Rodney B. Croteau; B. Markus Lange

2008-01-01T23:59:59.000Z

255

A systems biology approach identifies the biochemical mechanisms regulating monoterpenoid essential oil composition in peppermint  

Science Journals Connector (OSTI)

...from plants grown in the greenhouse contained primarily...menthofuran in greenhouse-grown plants...Sunshine Mix LC1; SunGro Horticulture) in a greenhouse with supplemental lighting from sodium-vapor lights...

Rigoberto Rios-Estepa; Glenn W. Turner; James M. Lee; Rodney B. Croteau; B. Markus Lange

2008-01-01T23:59:59.000Z

256

Biochemical Insights on Degradation of Arabidopsis DELLA Proteins Gained From a Cell-Free Assay System  

Science Journals Connector (OSTI)

...Feng Wang a b Danmeng Zhu a c d Xi Huang a b Shuang Li a b Yinan...Lys-48-linked ubiquitin chains (Jin et al., 2008). Thus, other...GAI Constructs. We thank Tai-ping Sun for providing sly1-d and...Plant Biol. 10: 461-465. Jin, L., Williamson, A., Banerjee...

Feng Wang; Danmeng Zhu; Xi Huang; Shuang Li; Yinan Gong; Qinfang Yao; Xiangdong Fu; Liu-Min Fan; Xing Wang Deng

2009-08-28T23:59:59.000Z

257

The AAAI-04 Workshop on Agent Organizations: Theory and Practice. July 25-29, 2004, San Jose, California. An Organizational Model for Designing Adaptive Multiagent Systems  

E-Print Network (OSTI)

, California. An Organizational Model for Designing Adaptive Multiagent Systems Scott A. DeLoach Eric Matson describes how to design adaptive multiagent systems using an organizational model, which defines to provide required information at various levels of efficiency and effectiveness. Introduction The field

Deloach, Scott A.

258

Nonlinear Analysis: Theory, Metods and Applications (2007) doi:10.1016/j.na.2007.07.034 Dynamical systems method (DSM) for general  

E-Print Network (OSTI)

; Dynamical systems method (DSM) for general nonlinear equations. A.G. Ramm Mathematics Department, Kansas) = 0 can be solved by a DSM (dynamical systems method). This method yields also a convergent iterative is constructed by a DSM when f is unknown but f # is known, where ||f # - f || # #. 1 Introduction In this paper

259

Information theory and solar energy collection  

Science Journals Connector (OSTI)

Information theory is applied to the problem of solar radiation collection. We find that the optimum solar concentrator corresponds to a perfect imaging system, i.e., one that images...

Patera, R P; Robertson, H S

1980-01-01T23:59:59.000Z

260

Heavy quarks in effective field theories  

E-Print Network (OSTI)

Heavy quark physics serves as a probe to understand QCD, measure standard model parameters, and look for signs of new physics. We study several aspects of heavy quark systems in an effective field theory framework, including ...

Jain, Ambar

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

Condensed Matter Theory Center Tuesday, December 13  

E-Print Network (OSTI)

Condensed Matter Theory Center Seminar Tuesday, December 13 11:00am-12:30pm 2205 Physics Building" Abstract: At sufficiently low temperatures, condensed-matter systems tend to develop order. An notable

Lathrop, Daniel P.

262

Determination of effective brain connectivity from functional connectivity using propagator-based interferometry and neural field theory with application to the corticothalamic system  

Science Journals Connector (OSTI)

It is shown how to compute both direct and total effective connection matrices (deCMs and teCMs), which embody the strengths of neural connections between regions, from correlation-based functional CMs using propagator-based interferometry, a method that stems from geophysics and acoustics, coupled with the recent identification of deCMs and teCMs with bare and dressed propagators, respectively. The approach incorporates excitatory and inhibitory connections, multiple structures and populations, and measurement effects. The propagator is found for a generalized scalar wave equation derived from neural field theory, and expressed in terms of neural activity correlations and covariances, and wave damping rates. It is then related to correlation matrices that are commonly used to express functional and effective connectivities in the brain. The results are illustrated in analytically tractable test cases.

P. A. Robinson

2014-10-15T23:59:59.000Z

263

Constructor Theory of Information  

E-Print Network (OSTI)

We present a theory of information expressed solely in terms of which transformations of physical systems are possible and which are impossible - i.e. in constructor-theoretic terms. Although it includes conjectured laws of physics that are directly about information, independently of the details of particular physical instantiations, it does not regard information as an a priori mathematical or logical concept, but as something whose nature and properties are determined by the laws of physics alone. It does not suffer from the circularity at the foundations of existing information theory (namely that information and distinguishability are each defined in terms of the other). It explains the relationship between classical and quantum information, and reveals the single, constructor-theoretic property underlying the most distinctive phenomena associated with the latter, including the lack of in-principle distinguishability of some states, the impossibility of cloning, the existence of pairs of variables that cannot simultaneously have sharp values, the fact that measurement processes can be both deterministic and unpredictable, the irreducible perturbation caused by measurement, and entanglement (locally inaccessible information).

David Deutsch; Chiara Marletto

2014-07-14T23:59:59.000Z

264

Electromagnetic Theory 1 /56 Electromagnetic Theory  

E-Print Network (OSTI)

Electromagnetic Theory 1 /56 Electromagnetic Theory Summary: · Maxwell's equations · EM Potentials · Equations of motion of particles in electromagnetic fields · Green's functions · Lienard-Weichert potentials · Spectral distribution of electromagnetic energy from an arbitrarily moving charge #12;Electromagnetic

Bicknell, Geoff

265

Proteomic and Biochemical Studies of Human Mesenchymal Stem Cells in Response to Low Dose Ionizing Radiation  

NLE Websites -- All DOE Office Websites (Extended Search)

Proteomic and Biochemical Studies of Human Mesenchymal Stem Cells Proteomic and Biochemical Studies of Human Mesenchymal Stem Cells in Response to Low Dose Ionizing Radiation Deok-Jin Jang 1 , Mingquan Guo 1 , Julia S.F.Chu 2 , Kyle T. Kurpinski 2 , Bjorn Rydberg 1 , Song Li 2 , and Daojing Wang 1 1. Life Sciences Division, Lawrence Berkeley National Lab, Berkeley, CA 94720 2. Department of Bioengineering, University of California, Berkeley, CA 94720 We will present data obtained during the first year of our DOE/NASA Low Dose Radiation Research program. We utilized a comprehensive approach including transcriptomics, proteomics, phosphoproteomics, and biochemistry to characterize human mesenchymal stem cells (MSCs) in response to low dose ionizing radiation. We first determined the cell survival, proliferation, and osteogenic differentiation of

266

Techno-Economic Analysis of Biochemical Scenarios for Production of Cellulosic Ethanol  

NLE Websites -- All DOE Office Websites (Extended Search)

8 8 June 2010 Techno-Economic Analysis of Biochemical Scenarios for Production of Cellulosic Ethanol F. Kabir Kazi, J. Fortman, and R. Anex Iowa State University G. Kothandaraman ConocoPhillips Company D. Hsu, A. Aden, and A. Dutta National Renewable Energy Laboratory National Renewable Energy Laboratory 1617 Cole Boulevard, Golden, Colorado 80401-3393 303-275-3000 * www.nrel.gov NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Operated by the Alliance for Sustainable Energy, LLC Contract No. DE-AC36-08-GO28308 Technical Report NREL/TP-6A2-46588 June 2010 Techno-Economic Analysis of Biochemical Scenarios for Production of Cellulosic Ethanol F. Kabir Kazi, J. Fortman, and R. Anex

267

A newly isolated Bacillus licheniformis strain thermophilically produces 2,3-butanediol, a platform and fuel bio-chemical  

Science Journals Connector (OSTI)

...2,3-Butanediol (2,3-BD), a platform and fuel bio-chemical, can be efficiently produced by Klebsiella pneumonia, K. oxytoca, and Serratia marcescens. However, these strains are opportunistic pathogens and not f...

Lixiang Li; Lijie Zhang; Kun Li; Yu Wang; Chao Gao…

2013-08-01T23:59:59.000Z

268

Biochemical Changes During Fungal Sporulation and Spore Germination: I. Phenyl Methyl Sulfonyl Fluoride Inhibition of Macroconidial Germination in Microsporum gypseum  

Science Journals Connector (OSTI)

...agent. The germination of Bacillus spores was inhibited 190...alkaline protease of B. subtilis (2). It is interesting that the B. subtilis alkaline protease was...transformable strain of Bacillus subtilis. Arch. Biochem. Biophys...

T. J. Leighton; J. J. Stock

1970-03-01T23:59:59.000Z

269

Elements of number theory  

E-Print Network (OSTI)

The dissertation argues for the necessity of a morphosemantic theory of number, that is, a theory of number serviceable both to semantics and morphology. The basis for this position, and the empirical core of the dissertation, ...

Harbour, Daniel, 1975-

2003-01-01T23:59:59.000Z

270

Essays on economic theory  

E-Print Network (OSTI)

These four essays concern the theory of games and its application to economic theory. The first two, closely linked, chapters are an investigation into the foundational question of the sensitivity of the predictions of ...

Weinstein, Jonathan

2005-01-01T23:59:59.000Z

271

Low energy branes, effective theory, and cosmology  

Science Journals Connector (OSTI)

The low energy regime of cosmological BPS-brane configurations with a bulk scalar field is studied. We construct a systematic method to obtain five-dimensional solutions to the full system of equations governing the geometry and dynamics of the bulk. This is done for an arbitrary bulk scalar field potential and taking into account the presence of matter on the branes. The method, valid in the low energy regime, is a linear expansion of the system about the static vacuum solution. Additionally, we develop a four-dimensional effective theory describing the evolution of the system. At the lowest order in the expansion, the effective theory is a biscalar tensor theory of gravity. One of the main features of this theory is that the scalar fields can be stabilized naturally without the introduction of additional mechanisms, allowing satisfactory agreement between the model and current observational constraints. The special case of the Randall-Sundrum model is discussed.

Gonzalo A. Palma and Anne-Christine Davis

2004-09-15T23:59:59.000Z

272

Game Theory Kenneth Prestwich  

E-Print Network (OSTI)

...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ......... . . . . . . ESS Game theory modeling: Hawks dashed line and Doves solid line. #12;Game Theory Kenneth Prestwich ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. ......... . . . . . . ESS Game theory modeling: Hawks dashed line and Doves solid line. #12;c 1999 by Kenneth Prestwich. All are available on-line at: http: science.holycross.edu departments biology kprestwi behavior ESS ESS index frmset

Prestwich, Ken

273

Decision Theory Mendoza, M.  

E-Print Network (OSTI)

1 MS 1319 Decision Theory Mendoza, M. Dept. Statistics, ITAM Rio Hondo 1, San Angel. México 01000 D of Decision Theory, the literature offers an account of the ways people actually make decisions and a discussion on the mechanisms underlying this behavior. This is called a "descriptive" decision theory

Mendoza Ramírez, Manuel

274

1064 IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS--I: FUNDAMENTAL THEORY AND APPLICATIONS, VOL. 46, NO. 9, SEPTEMBER 1999 AER Image Filtering Architecture  

E-Print Network (OSTI)

. 9, SEPTEMBER 1999 AER Image Filtering Architecture for Vision-Processing Systems Teresa Serrano for the realization of real-time two-dimensional (2-D) image filtering in an address- event-representation (AER on another approach, whose popularity has grown recently, which is known as address even representation (AER

Barranco, Bernabe Linares

275

Appears in Perspectives in Mathematical System Theory, Control, and Information Processing, A Festschrift in honor of Yutaka Yamamoto on the Occasion of his sixtieth birthday,  

E-Print Network (OSTI)

law). Power and energy that enter a circuit is defined for ports. Terminals are for interconnection, ports are for energy transfer. A port of a mechanical system is a set of terminals that satisfy port on the other hand. Interconnection happens via terminals, while energy transfer happens via ports. We consider

276

Perturbation Expa]nsion in Dynamical Nuclear Field Theory and Its Relation with Boson Expansion Theory  

Science Journals Connector (OSTI)

......Perturbation Expa]nsion in Dynamical Nuclear Field Theory and Its Relation...April 1990. With the Dynamical Nuclear Field Theory (DNFT) in the...vibrational mode of a spherical nuclear system. Due to the effects...coupling strength and boson energy fails at full self-consistency......

Teruo Kishimoto; Tetsuo Kammuri

1990-09-01T23:59:59.000Z

277

Theory of fermion liquids  

Science Journals Connector (OSTI)

We develop a general theory of fermion liquids in spatial dimensions greater than 1. The principal method, bosonization, is applied to the cases of short- and long-range longitudinal interactions and to transverse gauge interactions. All the correlation funtions of the system may be obtained with the use of a generating functional. Short-range and Coulomb interactions do not destroy the Landau-Fermi fixed point. Non-Fermi liquid fixed points are found, however, in the cases of a super-long-range longitudinal interaction in two dimensions and transverse gauge interactions in two and three spatial dimensions. We consider in some detail the (2+1)-dimensional problem of a Chern-Simons gauge action combined with a longitudinal two-body interaction V(q)??q?y-1, which controls the density, and hence gauge, fluctuations. For y0 the interaction is relevant and the fixed point cannot be accessed by bosonization. Of special importance is the case y=0 (Coulomb interaction), which describes the Halperin-Lee-Read theory of the half-filled Landau level. We obtain the full quasiparticle propagator, which is of a marginal Fermi-liquid form. Using Ward identities, we show that neither the inclusion of nonlinear terms in the fermion dispersion nor vertex corrections alters our results: the fixed point is accessible by bosonization. As the two-point fermion Green’s function is not gauge invariant, we also invetigate the gauge-invariant density response function. Near momentum Q=2kF, in addition to the Kohn anomaly we find other nonanalytic behavior. In the appendies we present a numerical calculation of the spectral function for a Fermi liquid with Landau parameter f0?0. We also show how Kohn’s theorem is satisfied within the bosonization framework.

H.-J. Kwon; A. Houghton; J. B. Marston

1995-09-15T23:59:59.000Z

278

Hybrid Dynamic Density Functional Theory for Polymer Melts and Blends  

E-Print Network (OSTI)

We propose a high-speed and accurate hybrid dynamic density functional theory for the computer simulations of the phase separation processes of polymer melts and blends. The proposed theory is a combination of the dynamic self-consistent field (SCF) theory and a time-dependent Ginzburg-Landau type theory with the random phase approximation (GRPA). The SCF theory is known to be accurate in evaluating the free energy of the polymer systems in both weak and strong segregation regions although it has a disadvantage of the requirement of a considerable amount of computational cost. On the other hand, the GRPA theory has an advantage of much smaller amount of required computational cost than the SCF theory while its applicability is limited to the weak segregation region. To make the accuracy of the SCF theory and the high-performance of the GRPA theory compatible, we adjust the chemical potential of the GRPA theory by using the SCF theory every constant time steps in the dynamic simulations. The performance of the GRPA and the hybrid theories is tested by using several systems composed of an A/B homopolymer, an AB diblock copolymer, or an ABC triblock copolymer. Using the hybrid theory, we succeeded in reproducing the metastable complex phase-separated domain structures of an ABC triblock copolymer observed by experiments.

Takashi Honda; Toshihiro Kawakatsu

2006-09-05T23:59:59.000Z

279

Magnetism Theory Group / POSTECH Magnetism Theory Group / POSTECH  

E-Print Network (OSTI)

Magnetism Theory Group / POSTECH #12;Magnetism Theory Group / POSTECH #12;Magnetism Theory Group / POSTECH #12;Magnetism Theory Group / POSTECH #12;Magnetism Theory Group / POSTECH J.H . Park et al. #12;'s of FeinCsm e tal The chargeandorbitalordering geom etryin YB a C o 2 O 5 S. K. Kwon etal .Magnetism Theory

Min, Byung Il

280

Density Functional Theory for Superconductors  

E-Print Network (OSTI)

Density Functional Theory for Superconductors LATHIOTAKIS, A. MARQUES, 1,2,3 LU DERS, L. FAST, 2004 words: theory superconductors; density functional theory; critical temperature; exchange matter physics theoretical chemistry is density functional theory (DFT). foundations were established mid

Gross, E.K.U.

Note: This page contains sample records for the topic "biochemical systems theory" 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

Migration revisited using the Category Theory: Application to Biological Modelling Languages  

E-Print Network (OSTI)

on the system theory appeared [2]. Within that range, Modelica [3], Stella [4] and SIMILE [5], for instance

Boyer, Edmond

282

Microfluidic systems for chemical kinetics that rely on chaotic mixing in droplets  

Science Journals Connector (OSTI)

...system is particularly appropriate for chemical kinetics and biochemical assays. The...required. 9. Using the microfluidic platform to measure kinetics This plug-based...Press. Ottino, J. M. 1994 Mixing and chemical-reactions--a tutorial. Chem. Engng...

2004-01-01T23:59:59.000Z

283

Global-to-local incompatibility, monogamy of entanglement, and ground-state dimerization: Theory and observability of quantum frustration in systems with competing interactions  

E-Print Network (OSTI)

Frustration in quantum many body systems is quantified by the degree of incompatibility between the local and global orders associated, respectively, to the ground states of the local interaction terms and the global ground state of the total many-body Hamiltonian. This universal measure is bounded from below by the ground-state bipartite block entanglement. For many-body Hamiltonians that are sums of two-body interaction terms, a further inequality relates quantum frustration to the pairwise entanglement between the constituents of the local interaction terms. This additional bound is a consequence of the limits imposed by monogamy on entanglement shareability. We investigate the behavior of local pair frustration in quantum spin models with competing interactions on different length scales and show that valence bond solids associated to exact ground-state dimerization correspond to a transition from generic frustration, i.e. geometric, common to classical and quantum systems alike, to genuine quantum frustration, i.e. solely due to the non-commutativity of the different local interaction terms. We discuss how such frustration transitions separating genuinely quantum orders from classical-like ones are detected by observable quantities such as the static structure factor and the interferometric visibility.

S. M. Giampaolo; B. C. Hiesmayr; F. Illuminati

2015-01-25T23:59:59.000Z

284

Mesoscopic theory of the viscoelasticity of polymers  

E-Print Network (OSTI)

We have advanced our previous static theory of polymer entanglement involving an extended Cahn-Hilliard functional, to include time-dependent dynamics. We go beyond the Gaussian approximation, to the one-loop level, to compute the frequency dependent storage and loss moduli of the system. The three parameters in our theory are obtained by fitting to available experimental data on polystyrene melts of various chain lengths. This provides a physical representation of the parameters in terms of the chain length of the system. We discuss the importance of the various terms in our energy functional with respect to their contribution to the viscoelastic response of the polymeric system.

S. M. Chitanvis

1999-01-26T23:59:59.000Z

285

Techno-Economic Analysis of Bioconversion of Methane into Biofuel and Biochemical (Poster)  

SciTech Connect

In light of the relatively low price of natural gas and increasing demands of liquid transportation fuels and high-value chemicals, attention has begun to turn to novel biocatalyst for conversion of methane (CH4) into biofuels and biochemicals [1]. A techno-economic analysis (TEA) was performed for an integrated biorefinery process using biological conversion of methane, such as carbon yield, process efficiency, productivity (both lipid and acid), natural gas and other raw material prices, etc. This analysis is aimed to identify research challenges as well provide guidance for technology development.

Fei, Q.; Tao, L.; Pienkos, P .T.; Guarnieri, M.; Palou-Rivera, I.

2014-10-01T23:59:59.000Z

286

Genomic and biochemical approaches in the discovery of mechanisms for selective neuronal vulnerability to oxidative stress  

E-Print Network (OSTI)

ral ssBioMed CentBMC Neuroscience Open AcceResearch article Genomic and biochemical approaches in the discovery of mechanisms for selective neuronal vulnerability to oxidative stress Xinkun Wang*1,2, Asma Zaidi2,3, Ranu Pal1,2, Alexander S Garrett4...: Daiichi Sankyo Inc., Two Hilton Court, Parsippany, NJ 07054, USA Email: Xinkun Wang* - xwang@ku.edu; Asma Zaidi - azaidi@kcumb.edu; Ranu Pal - ranupal@ku.edu; Alexander S Garrett - asg@stowers- institute.org; Rogelio Braceras - rbraceras@dsus.com; Xue...

Wang, Xinkun; Zaidi, Asma; Pal, Ranu; Garrett, Alexander S.; Braceras, Rogelio; Chen, Xue-wen; Michaelis, Mary L.; Michaelis, Elias K.

2009-02-19T23:59:59.000Z

287

Comparison between Gaussian-type orbitals and plane wave ab initio density functional theory modeling of layer silicates: Talc [Mg{sub 3}Si{sub 4}O{sub 10}(OH){sub 2}] as model system  

SciTech Connect

The quantum chemical characterization of solid state systems is conducted with many different approaches, among which the adoption of periodic boundary conditions to deal with three-dimensional infinite condensed systems. This method, coupled to the Density Functional Theory (DFT), has been proved successful in simulating a huge variety of solids. Only in relatively recent years this ab initio quantum-mechanic approach has been used for the investigation of layer silicate structures and minerals. In the present work, a systematic comparison of different DFT functionals (GGA-PBEsol and hybrid B3LYP) and basis sets (plane waves and all-electron Gaussian-type orbitals) on the geometry, energy, and phonon properties of a model layer silicate, talc [Mg{sub 3}Si{sub 4}O{sub 10}(OH){sub 2}], is presented. Long range dispersion is taken into account by DFT+D method. Results are in agreement with experimental data reported in literature, with minimal deviation given by the GTO/B3LYP-D* method regarding both axial lattice parameters and interaction energy and by PW/PBE-D for the unit-cell volume and angular values. All the considered methods adequately describe the experimental talc infrared spectrum.

Ulian, Gianfranco; Valdrè, Giovanni, E-mail: giovanni.valdre@unibo.it [Dipartimento di Scienze Biologiche e Geologico-Ambientali, Centro di Ricerca Interdisciplinare di Biomineralogia, Cristallografia e Biomateriali, Università di Bologna “Alma Mater Studiorum” Piazza di Porta San Donato 1, 40126 Bologna (Italy)] [Dipartimento di Scienze Biologiche e Geologico-Ambientali, Centro di Ricerca Interdisciplinare di Biomineralogia, Cristallografia e Biomateriali, Università di Bologna “Alma Mater Studiorum” Piazza di Porta San Donato 1, 40126 Bologna (Italy); Tosoni, Sergio [Departament de Química Física and Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, C/ Martí i Franquès 1, E-08028 Barcelona (Spain)] [Departament de Química Física and Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, C/ Martí i Franquès 1, E-08028 Barcelona (Spain)

2013-11-28T23:59:59.000Z

288

Gravitational lensing in metric theories of gravity  

Science Journals Connector (OSTI)

Gravitational lensing in metric theories of gravity is discussed. I introduce a generalized approximate metric element, inclusive of both post-post-Newtonian contributions and a gravitomagnetic field. Following Fermat’s principle and standard hypotheses, I derive the time delay function and deflection angle caused by an isolated mass distribution. Several astrophysical systems are considered. In most of the cases, the gravitomagnetic correction offers the best perspectives for an observational detection. Actual measurements distinguish only marginally different metric theories from each other.

Mauro Sereno

2003-03-24T23:59:59.000Z

289

Which decision theory?  

Science Journals Connector (OSTI)

Abstract A new laboratory experiment is designed to identify the best theories for describing decisions under risk. The experimental design has two noteworthy features: a representative sample of binary choice problems (for fair comparison across theories) and a lottery set with a small number of outcomes and probabilities (for ease of non-parametric estimation). We find that a simple heuristic, rank-dependent utility and expected utility theory provide the best goodness of fit.

Pavlo Blavatskyy

2013-01-01T23:59:59.000Z

290

Automated Lattice Perturbation Theory  

SciTech Connect

I review recent developments in automated lattice perturbation theory. Starting with an overview of lattice perturbation theory, I focus on the three automation packages currently "on the market": HiPPy/HPsrc, Pastor and PhySyCAl. I highlight some recent applications of these methods, particularly in B physics. In the final section I briefly discuss the related, but distinct, approach of numerical stochastic perturbation theory.

Monahan, Christopher

2014-11-01T23:59:59.000Z

291

Original research What was the programme theory of New Labour's  

E-Print Network (OSTI)

Original research What was the programme theory of New Labour's Health System Reforms? Ross Millar The King's Fund, London, UK Objectives: To examine whether the Health System Reforms delivered the promise of being a coherent and mutually supporting reform programme; to identify the underlying programme theory

Birmingham, University of

292

Complex biological and bio-inspired systems  

SciTech Connect

The understanding and characterization ofthe fundamental processes of the function of biological systems underpins many of the important challenges facing American society, from the pathology of infectious disease and the efficacy ofvaccines, to the development of materials that mimic biological functionality and deliver exceptional and novel structural and dynamic properties. These problems are fundamentally complex, involving many interacting components and poorly understood bio-chemical kinetics. We use the basic science of statistical physics, kinetic theory, cellular bio-chemistry, soft-matter physics, and information science to develop cell level models and explore the use ofbiomimetic materials. This project seeks to determine how cell level processes, such as response to mechanical stresses, chemical constituents and related gradients, and other cell signaling mechanisms, integrate and combine to create a functioning organism. The research focuses on the basic physical processes that take place at different levels ofthe biological organism: the basic role of molecular and chemical interactions are investigated, the dynamics of the DNA-molecule and its phylogenetic role are examined and the regulatory networks of complex biochemical processes are modeled. These efforts may lead to early warning algorithms ofpathogen outbreaks, new bio-sensors to detect hazards from pathomic viruses to chemical contaminants. Other potential applications include the development of efficient bio-fuel alternative-energy processes and the exploration ofnovel materials for energy usages. Finally, we use the notion of 'coarse-graining,' which is a method for averaging over less important degrees of freedom to develop computational models to predict cell function and systems-level response to disease, chemical stress, or biological pathomic agents. This project supports Energy Security, Threat Reduction, and the missions of the DOE Office of Science through its efforts to accurately model biological systems at the molecular and cellular level. The project's impact encompasses applications to biofuels, to novel sensors and to materials with broad use for energy or threat reduction. The broad, interdisciplinary approach of CNLS offers the unparalleled strength of combining science backgrounds and expertise -a unique and important asset in attacking the complex science of biological organisms. This approach also allows crossfertilization, with concepts and techniques transferring across field boundaries.

Ecke, Robert E [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

293

Theory and Software  

NLE Websites -- All DOE Office Websites (Extended Search)

groups at several beam lines. At NIU, the theory effort is integrated with the nanoscience program of the Institute for Nanoscience, Engineering and Technology (INSET) at...

294

Effective medium theory  

SciTech Connect

New applications of the theory of homogenization for heterogeneous metamaterials, in particular for acoustic cloaking and for design and engineering of tunable phononic crystal.

Krokhin, Arkadii [Univ. of North Texas, Denton, TX (United States)

2014-04-18T23:59:59.000Z

295

MHK Projects/Modeling the Physical and Biochemical Influence of Ocean  

Open Energy Info (EERE)

Modeling the Physical and Biochemical Influence of Ocean Modeling the Physical and Biochemical Influence of Ocean Thermal Energy Conversion Plant Discharges into their Adjacent Waters < MHK Projects Jump to: navigation, search << Return to the MHK database homepage Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":5,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"350px","centre":false,"title":"","label":"","icon":"File:Aquamarine-marker.png","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":21.9,"lon":158.75,"alt":0,"address":"","icon":"http:\/\/prod-http-80-800498448.us-east-1.elb.amazonaws.com\/w\/images\/7\/74\/Aquamarine-marker.png","group":"","inlineLabel":"","visitedicon":""}]}

296

Utility Theory Social Intelligence  

E-Print Network (OSTI)

Utility Theory Social Intelligence Daniel Polani Utility Theory ­ p.1/15 Utilities: Motivation Consider: game scenario For Instance: 2-or-more players Necessary: development of concept for utilities decisions sequential decisions (time) games Utility The Prototypical Scenario Consider: agent that can take

Polani, Daniel

297

Optimal Control Theory for Sustainable Environmental Management  

Science Journals Connector (OSTI)

Although optimization leading to time-independent decisions is a well established decision-making technique, such decisions might be suboptimal for natural systems, as they ignore the inherent dynamic characteristics of these systems. ... Therefore, an effective approach is to use control theory to derive time-dependent management decisions. ... This is decided using the results from the PRCC analysis and also based on the dynamics of the uncontrolled system. ...

Yogendra Shastri; Urmila Diwekar; Heriberto Cabezas

2008-06-14T23:59:59.000Z

298

Geometric perturbation theory and plasma physics  

SciTech Connect

Modern differential geometric techniques are used to unify the physical asymptotics underlying mechanics, wave theory and statistical mechanics. The approach gives new insights into the structure of physical theories and is suited to the needs of modern large-scale computer simulation and symbol manipulation systems. A coordinate-free formulation of non-singular perturbation theory is given, from which a new Hamiltonian perturbation structure is derived and related to the unperturbed structure. The theory of perturbations in the presence of symmetry is developed, and the method of averaging is related to reduction by a circle group action. The pseudo-forces and magnetic Poisson bracket terms due to reduction are given a natural asymptotic interpretation. Similar terms due to changing reference frames are related to the method of variation of parameters, which is also given a Hamiltonian formulation. These methods are used to answer a question about nearly periodic systems. The answer leads to a new secular perturbation theory that contains no ad hoc elements. Eikonal wave theory is given a Hamiltonian formulation that generalizes Whitham's Lagrangian approach. The evolution of wave action density on ray phase space is given a Hamiltonian structure using a Lie-Poisson bracket. The relationship between dissipative and Hamiltonian systems is discussed. A new type of attractor is defined which attracts both forward and backward in time and is shown to occur in infinite-dimensional Hamiltonian systems with dissipative behavior. The theory of Smale horseshoes is applied to gyromotion in the neighborhood of a magnetic field reversal and the phenomenon of reinsertion in area-preserving horseshoes is introduced. The central limit theorem is proved by renormalization group techniques. A natural symplectic structure for thermodynamics is shown to arise asymptotically from the maximum entropy formalism.

Omohundro, S.M.

1985-04-04T23:59:59.000Z

299

In situ Bio-Spectroscopic Investigation of Rapid Ischemic and Post-mortem Induced Biochemical Alterations in the Rat Brain  

Science Journals Connector (OSTI)

In situ Bio-Spectroscopic Investigation of Rapid Ischemic and Post-mortem Induced Biochemical Alterations in the Rat Brain ... Rapid advances in imaging technologies have pushed novel spectroscopic modalities such as Fourier-transform infrared spectroscopy (FTIR), and X-ray absorption spectroscopy (XAS) at the sulfur K-edge to the forefront of direct in situ investigation of brain biochemistry. ... The results are in accordance with previous investigations using biochemical assays and demonstrate that the time between animal death and tissue dissection results in ischemic conditions that alter brain metabolism and initiate oxidative stress. ...

Mark J Hackett; Carter J Britz; Phyllis G Paterson; Helen Nichol; Ingrid J. Pickering; Graham N. George

2014-10-28T23:59:59.000Z

300

Quantum theory from one global symmetry  

E-Print Network (OSTI)

It is shown that unitary quantum theory is not only consistent with but follows from decompositional equivalence: the principle that there is no preferred decomposition of the universe into systems, or alternatively, that there is no preferred quantum reference frame. Decompositional equivalence requires unitary quantum theory to be both observer- and scale-independent, requires time, "systems" and all classical information to be strictly observer-relative, and imposes an unavoidable free-energy cost on the acquisition of observational outcomes. This free energy cost of observation is characterized from first principles and shown to accord with known costs of information acquisition and storage by human observers.

Chris Fields

2014-06-17T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

SEQUENTIAL ADOPTION THEORY: A Theory For Understanding Herding in Technology  

E-Print Network (OSTI)

SEQUENTIAL ADOPTION THEORY: A Theory For Understanding Herding in Technology Adoption Decisions, Sequential decision making, Signal detection theory, Imitative behavior, Simulation I. INTRODUCTION adoption often occurs sequentially, so that later potential adopters can see the decisions (adopt

Walden, Eric

302

Nonholonomic Hamilton-Jacobi Theory via Chaplygin Hamiltonization  

E-Print Network (OSTI)

We develop Hamilton-Jacobi theory for Chaplygin systems, a certain class of nonholonomic mechanical systems with symmetries, using a technique called Hamiltonization, which transforms nonholonomic systems into Hamiltonian systems. We give a geometric account of the Hamiltonization, identify necessary and sufficient conditions for Hamiltonization, and apply the conventional Hamilton-Jacobi theory to the Hamiltonized systems. We show, under a certain sufficient condition for Hamiltonization, that the solutions to the Hamilton-Jacobi equation associated with the Hamiltonized system also solve the nonholonomic Hamilton-Jacobi equation associated with the original Chaplygin system. The results are illustrated through several examples.

Tomoki Ohsawa; Oscar E. Fernandez; Anthony M. Bloch; Dmitry V. Zenkov

2011-02-21T23:59:59.000Z

303

Viscosity, Black Holes, and Quantum Field Theory  

E-Print Network (OSTI)

We review recent progress in applying the AdS/CFT correspondence to finite-temperature field theory. In particular, we show how the hydrodynamic behavior of field theory is reflected in the low-momentum limit of correlation functions computed through a real-time AdS/CFT prescription, which we formulate. We also show how the hydrodynamic modes in field theory correspond to the low-lying quasinormal modes of the AdS black p-brane metric. We provide a proof of the universality of the viscosity/entropy ratio within a class of theories with gravity duals and formulate a viscosity bound conjecture. Possible implications for real systems are mentioned.

D. T. Son; A. O. Starinets

2007-04-02T23:59:59.000Z

304

Information Theory and Statistical Mechanics  

Science Journals Connector (OSTI)

Information theory provides a constructive criterion for setting up probability distributions on the basis of partial knowledge, and leads to a type of statistical inference which is called the maximum-entropy estimate. It is the least biased estimate possible on the given information; i.e., it is maximally noncommittal with regard to missing information. If one considers statistical mechanics as a form of statistical inference rather than as a physical theory, it is found that the usual computational rules, starting with the determination of the partition function, are an immediate consequence of the maximum-entropy principle. In the resulting "subjective statistical mechanics," the usual rules are thus justified independently of any physical argument, and in particular independently of experimental verification; whether or not the results agree with experiment, they still represent the best estimates that could have been made on the basis of the information available.It is concluded that statistical mechanics need not be regarded as a physical theory dependent for its validity on the truth of additional assumptions not contained in the laws of mechanics (such as ergodicity, metric transitivity, equal a priori probabilities, etc.). Furthermore, it is possible to maintain a sharp distinction between its physical and statistical aspects. The former consists only of the correct enumeration of the states of a system and their properties; the latter is a straightforward example of statistical inference.

E. T. Jaynes

1957-05-15T23:59:59.000Z

305

Hamilton-Jacobi Theory in k-Symplectic Field Theories  

E-Print Network (OSTI)

In this paper we extend the geometric formalism of Hamilton-Jacobi theory for Mechanics to the case of classical field theories in the k-symplectic framework.

M. De LeÓn; D. MartÍn De Diego; J. C. Marrero; M. Salgado; S. Vilariño

2010-05-10T23:59:59.000Z

306

G. Tsoulos (Ed.), MIMO System Technology for Wireless Communications, CRC & Taylor and Francis, Boca Raton, 2006. 20-Jul-05 Chapter 3: Information Theory and Electromagnetism: Are They Related? 1(37)  

E-Print Network (OSTI)

, Boca Raton, 2006. 20-Jul-05 Chapter 3: Information Theory and Electromagnetism: Are They Related? 1(37) INFORMATION THEORY AND ELECTROMAGNETISM: ARE THEY RELATED? Sergey Loyka1 , Juan Mosig2 1 School of Information [9-14]. Electromagnetic waves are used as the primary carrier of information. The basic

Loyka, Sergey

307

Two poplar methyl salicylate esterases display comparable biochemical properties but divergent expression patterns  

NLE Websites -- All DOE Office Websites (Extended Search)

Two Two poplar methyl salicylate esterases display comparable biochemical properties but divergent expression patterns Nan Zhao a , Ju Guan a , Farhad Forouhar b , Timothy J. Tschaplinski c , Zong-Ming Cheng a , Liang Tong b , Feng Chen a, * a Department of Plant Sciences, University of Tennessee, 252 Ellington Plant Science Bldg., 2431 Joe Johnson Drive, Knoxville, TN 37996, USA b Department of Biological Sciences, Northeast Structural Genomics Consortium, Columbia University, New York, NY 10027, USA c Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA a r t i c l e i n f o Article history: Received 3 June 2008 Received in revised form 27 October 2008 Available online 10 January 2009 Keywords: Black cottonwood Populus trichocarpa Methyl esterase SABP2 Methyl salicylate Salicylic acid Gene family Molecular modeling a b s t r a c t Two genes encoding proteins

308

Microfluidic Technology Platforms for Synthesizing, Labeling and Measuring the Kinetics of Transport and Biochemical Reactions for Developing Molecular Imaging Probes  

SciTech Connect

Radiotracer techniques are used in environmental sciences, geology, biology and medicine. Radiotracers with Positron Emission Tomography (PET) provided biological examinations of ~3 million patients 2008. Despite the success of positron labeled tracers in many sciences, there is limited access in an affordable and convenient manner to develop and use new tracers. Integrated microfluidic chips are a new technology well matched to the concentrations of tracers. Our goal is to develop microfluidic chips and new synthesis approaches to enable wide dissemination of diverse types of tracers at low cost, and to produce new generations of radiochemists for which there are many unfilled jobs. The program objectives are to: 1. Develop an integrated microfluidic platform technology for synthesizing and 18F-labeling diverse arrays of different classes of molecules. 2. Incorporate microfluidic chips into small PC controlled devices (“Synthesizer”) with a platform interfaced to PC for electronic and fluid input/out control. 3. Establish a de-centralized model with Synthesizers for discovering and producing molecular imaging probes, only requiring delivery of inexpensive [18F]fluoride ion from commercial PET radiopharmacies vs the centralized approach of cyclotron facilities synthesizing and shipping a few different types of 18F-probes. 4. Develop a position sensitive avalanche photo diode (PSAPD) camera for beta particles embedded in a microfluidic chip for imaging and measuring transport and biochemical reaction rates to valid new 18F-labeled probes in an array of cell cultures. These objectives are met within a research and educational program integrating radio-chemistry, synthetic chemistry, biochemistry, engineering and biology in the Crump Institute for Molecular Imaging. The Radiochemistry Training Program exposes PhD and post doctoral students to molecular imaging in vitro in cells and microorganisms in microfluidic chips and in vivo with PET, from new technologies for radiochemistry (macro to micro levels), biochemistry and biology to imaging principles, tracer kinetics, pharmacokinetics and biochemical assays. New generations of radiochemists will be immersed in the biochemistry and biology for which their labeled probes are being developed for assays of these processes. In this program engineers and radio-chemists integrate the principles of microfluidics and radiolabeling along with proper system design and chemistry rule sets to yield Synthesizers enabling biological and pharmaceutical scientists to develop diverse arrays of probes to pursue their interests. This progression would allow also radiochemists to focus on the further evolution of rapid, high yield synthetic reactions with new enabling technologies, rather than everyday production of radiotracers that should be done by technologists. The invention of integrated circuits in electronics established a platform technology that allowed an evolution of ideas and applications far beyond what could have been imagined at the beginning. Rather than provide a technology for the solution to a single problem, it is hoped that microfluidic radiochemistry will be an enabling platform technology for others to solve many problems. As part of this objective, another program goal is to commercialize the technologies that come from this work so that they can be provided to others who wish to use it.

Phelps, Michael E.

2009-09-01T23:59:59.000Z

309

Gauge Theory and Renormalization  

Science Journals Connector (OSTI)

Early developments leading to renormalizable non-Abelian gauge theories for the weak, electromagnetic and strong interactions, are discussed from a personal viewpoint. They drastically improved our view of the...

Gerard’t Hooft

1996-01-01T23:59:59.000Z

310

Theories of Truth  

Science Journals Connector (OSTI)

A theory of truth is supposed to tell us what it ... issue here? What are the bearers of truth and falsehood? Philosophical discussions of truth tend to revolve around four broad categories...truth bearers...: se...

Marian David

2004-01-01T23:59:59.000Z

311

Theory of nuclear reactions  

SciTech Connect

The book presents a theory of nuclear reaction. An account is given of the nonrelativistic nuclear reaction theory. The R - matrix description of nuclear reactions is considered and the dispersion method is formulated. Mechanisms of nuclear reactions and their relationship are studied in detail. Attention is paid to nuclear reactions involving the compound nuclear formation and to direct nuclear processes. The optical model the diffraction approach and high - energy diffraction nuclear processes involving composite particles are discussed.

Sitenko, A.G.

1990-01-01T23:59:59.000Z

312

Theory of Dipole Induced Electromagnetic Transparency  

E-Print Network (OSTI)

A detailed theory describing linear optics of vapors comprised of interacting multi-level quantum emitters is proposed. It is shown both by direct integration of Maxwell-Bloch equations and using a simple analytical model that at large densities narrow transparency windows appear in otherwise completely opaque spectra. The existence of such windows is attributed to overlapping resonances. This effect, first introduced for three-level systems in [R. Puthumpally-Joseph, M. Sukharev, O. Atabek and E. Charron, Phys. Rev. Lett. 113, 163603 (2014)], is due to strongly enhanced dipole-dipole interactions at high emitters' densities. The presented theory extends this effect to the case of multilevel systems. The theory is applied to the D1 transitions of interacting Rb-85 atoms. It is shown that at high atomic densities, Rb-85 atoms can behave as three-level emitters exhibiting all the properties of dipole induced electromagnetic transparency. Applications including slow light and laser pulse shaping are also propose...

Puthumpally-Joseph, Raiju; Sukharev, Maxim; Charron, Eric

2015-01-01T23:59:59.000Z

313

Molecular structure and biochemical properties of lignins in relation to possible self-organization of lignin networks  

E-Print Network (OSTI)

Molecular structure and biochemical properties of lignins in relation to possible self-organization of lignin networks B. Monties Laboratoire de Chimie Biologique, INRA (CBAI), Institut National Agronomique recalls chemical data related to the variations in the molecular structure of lignin and mainly discusses

Paris-Sud XI, Université de

314

Use of lambda unc transducing bacteriophages in genetic and biochemical characterization of H+-ATPase mutants of Escherichia coli.  

Science Journals Connector (OSTI)

...LAMBDA unc TRANSDUCING PHAGES 1085 .: *4.m .:A a 5 FIG. 4...determined. VOL. 156, 1983 1086 MOSHER, PETERS, AND FILLINGAME...LAMBDA unc TRANSDUCING PHAGES 1089 cases, weak growth in the complementation...Annu. Rev. Biochem. 49:1079-1113. 16. F1nme, R. H...

M E Mosher; L K Peters; R H Fillingame

1983-12-01T23:59:59.000Z

315

Eur. J. Biochem. 161,37-43 (1986) A 'H-NMR study of human interleukin-lp  

E-Print Network (OSTI)

vectors in E. coli, large amounts of highly purified recombinant 11-1 are potentially available-lp for our studies, since it can be produced as a soluble protein in large quantities in E. coli and purifiedEur. J. Biochem. 161,37-43 (1986) 0FEBS 1986 A 'H-NMR study of human interleukin-lp Sequence

Clore, G. Marius

316

Biochem. J. (2013) 449, 167173 (Printed in Great Britain) doi:10.1042/BJ20121271 167 Cytosolic [Ca2 +  

E-Print Network (OSTI)

Biochem. J. (2013) 449, 167­173 (Printed in Great Britain) doi:10.1042/BJ20121271 167 Cytosolic [Ca* *Department of Neurobiology and Behavior, University of California, Irvine, CA 92697, U.S.A., and Department of Physiology and Biophysics, University of California, Irvine, CA 92697, U.S.A. InsP3-mediated puffs

Parker, Ian

317

Eur. J. Biochem. 85, 529-534 (1978) X-Ray and Neutron Small-Angle Scattering Studies  

E-Print Network (OSTI)

Eur. J. Biochem. 85, 529-534 (1978) X-Ray and Neutron Small-Angle Scattering Studies of the Complex-ray and neutron scattering techniques. In this work, we concentrated mainly on radius of gyration analyses and a neutron scattering experiment is performed in 21-Iz0 solvent. This decrease simply reflects the fact

318

Particle-Number Projection and the Density Functional Theory  

E-Print Network (OSTI)

In the framework of the Density Functional Theory for superconductors, we study the restoration of the particle number symmetry by means of the projection technique. Conceptual problems are outlined and numerical difficulties are discussed. Both are related to the fact that neither the many-body Hamiltonian nor the wave function of the system appear explicitly in the Density Functional Theory. Similar obstacles are encountered in self-consistent theories utilizing density-dependent effective interactions.

J. Dobaczewski; M. V. Stoitsov; W. Nazarewicz; P. -G. Reinhard

2007-08-03T23:59:59.000Z

319

From dialectic to organization: Bogdanov’s contribution to social theory  

Science Journals Connector (OSTI)

This paper situates Bogdanov in the context of social theory generally and socialist theory in particular. It outlines briefly the principal characteristics of his mature system, and assesses the strengths and...

Anthony Mansueto

1996-03-01T23:59:59.000Z

320

Nuclear theory for high-energy nuclear reactions of biomedical relevance  

Science Journals Connector (OSTI)

......Presentations Nuclear theory for high-energy nuclear reactions of biomedical relevance...Nuclear Data Needs for Generation IV Nuclear Energy Systems, April 5-7, 2005...2005. Nuclear theory for high-energy nuclear reactions of biomedical relevance......

A. J. Koning; M. C. Duijvestijn

2007-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

Information Theory and Multiparticle Production  

Science Journals Connector (OSTI)

The secondary particles produced in high-energy inelastic collisions are treated statistically but in a manner distinct from the concept of one or more fireballs. We employ the classical grand-canonical approach, and in the spirit of information theory define an entropy for the system. It is postulated that this entropy is independent of the energy of the system for a sufficiently high incoming energy. Consequently, the energy dependence of the charged multiplicity N of the secondaries is determined to be N?(E0?)23, where E0 is the incoming center-of-mass energy and ? a normalizing mass. Under additional but natural assumptions, the ratios N?±NK±Npp¯ are predicted. Comparison of our results is made with experiment, and some limitations and consequences of the method are discussed.

P. Rotelli

1969-06-25T23:59:59.000Z

322

Bayesian decision theoryBayesian decision theory Jean Daunizeau  

E-Print Network (OSTI)

Bayesian decision theoryBayesian decision theory Jean Daunizeau Wellcome Trust CentreFromstatisticalinferencetostatisticaldecision...... estimationmotivationmotivation conclusionBayesian Decision Theory (i) What do we do with posterior pdfs? (ii) How can we learn:Expectedutilitytheory: existenceofautilityfunctionexistenceofautilityfunction estimationmotivationmotivation conclusionBayesian Decision Theory hypothesis testing

Daunizeau, Jean

323

Prequantum Classical Statistical Field Theory: Fundamentals  

SciTech Connect

We present fundamentals of a prequantum model with hidden variables of the classical field type. In some sense this is the comeback of classical wave mechanics. Our approach also can be considered as incorporation of quantum mechanics into classical signal theory. All quantum averages (including correlations of entangled systems) can be represented as classical signal averages and correlations.

Khrennikov, Andrei [International Center for Mathematical Modelling in Physics and Cognitive Sciences, Linnaeus University, Vaexjoe, S-35195 (Sweden)

2011-03-28T23:59:59.000Z

324

Master's Thesis Density Functional Theory for  

E-Print Network (OSTI)

of the information found during my work. v #12;vi #12;Contents Abstract #12;Abstract This thesis presents a number of results for basic quantum mechanical models intended to be used in the development of density functional theory for systems with edges. Following previous work

Armiento, Rickard

325

On Cyber Security for Networked Control Systems  

E-Print Network (OSTI)

infrastructure systems in the analysis of safety and stability - a significant contribution to the theory of hybrid

Amin, Saurabh

2011-01-01T23:59:59.000Z

326

Physics as Information Theory  

SciTech Connect

The experience from Quantum Information of the last twenty years has lead theorists to look at Quantum Theory and the whole of Physics from a different angle. A new information-theoretic paradigm is emerging, long time ago prophesied by John Archibald Wheeler with his popular coinage 'It from bit'. Theoretical groups are now addressing the problem of deriving Quantum Theory from informational principles, and similar lines are investigated in new approaches to Quantum Gravity. In my talk I will review some recent advances on these lines. The general idea synthesizing the new paradigm is that there is only Quantum Theory (without quantization rules): the whole Physics--including space-time and relativity--is emergent from quantum-information processing. And, since Quantum Theory itself is made with purely informational principles, the whole Physics must be reformulated in information-theoretical terms. The review is divided into the following parts: (a) The informational axiomatization of Quantum Theory; (b) How space-time and relativistic covariance emerge from the quantum computation; (c) What is the information-theoretical meaning of inertial mass and Planck constant, and how the quantum field emerges; (d) Observational consequences: mass-dependent refraction index of vacuum. I then conclude with some possible future research lines.

D'Ariano, Giacomo Mauro (University of Pavia) [University of Pavia

2010-10-20T23:59:59.000Z

327

Ensemble methods in computational protein and ligand design : applications to the Fc[gamma] immunoglobulin, HIV-1 protease, and ketol-acid reductoisomerase systems  

E-Print Network (OSTI)

This thesis explores the use of ensemble, free energy models in the study and design of molecular, biochemical systems. We use physics based computational models to analyze the molecular basis of binding affinity in the ...

Silver, Nathaniel White

2012-01-01T23:59:59.000Z

328

History of Unified Theories  

NLE Websites -- All DOE Office Websites (Extended Search)

Jahrelang haben Physiker nach vereinheitlichten Theorien gesucht - und Jahrelang haben Physiker nach vereinheitlichten Theorien gesucht - und diese auch gefunden. 1861-1865 James Maxwell, beschreibt in einem Artikel die Zusammenhänge zwischen elektrischen und magnetischen Feldern und vereinigt diese zur Theorie des Elektromagnetismus. Das führte zu den heute berühmten Maxwell'schen Gleichungen. 1881-1884 Heinrich Hertz demonstriert im Experiment die Existenz von Radiowellen und zeigt, dass Radiowellen und Licht elektromagnetische Wellen unterschiedlicher Frequenz darstellen - ein Faktum, das bereits von Maxwell in seiner Theorie vorhergesagt wurde. 1967-1970 Glashow, Salam und Weinberg schlagen eine Theorie vor, welche die elektromagnetische Wechselwirkung mit der schwachen WW vereinigt. Sie sagen die Masse des W Bosons, welches schwache Wechselwirkung - z.B.

329

Theory of cargo and membrane trafficking  

E-Print Network (OSTI)

Endocytosis underlies many cellular functions including signaling and nutrient uptake. The endocytosed cargo gets redistributed across a dynamic network of endosomes undergoing fusion and fission. Here, a theoretical approach is reviewed which can explain how the microscopic properties of endosome interactions cause the emergent macroscopic properties of cargo trafficking in the endosomal network. Predictions by the theory have been tested experimentally and include the inference of dependencies and parameter values of the microscopic processes. This theory could also be used to infer mechanisms of signal-trafficking crosstalk. It is applicable to in vivo systems since fixed samples at few time points suffice as input data.

Lionel Foret; Lutz Brusch; Frank Jülicher

2014-12-03T23:59:59.000Z

330

Perspective: Nonadiabatic dynamics theory  

Science Journals Connector (OSTI)

Nonadiabatic dynamics—nuclear motion evolving on multiple potential energy surfaces—has captivated the interest of chemists for decades. Exciting advances in experimentation and theory have combined to greatly enhance our understanding of the rates and pathways of nonadiabatic chemical transformations. Nevertheless there is a growing urgency for further development of theories that are practical and yet capable of reliable predictions driven by fields such as solar energy interstellar and atmospheric chemistry photochemistry vision single molecule electronics radiation damage and many more. This Perspective examines the most significant theoretical and computational obstacles to achieving this goal and suggests some possible strategies that may prove fruitful.

John C. Tully

2012-01-01T23:59:59.000Z

331

Theories with Memory  

E-Print Network (OSTI)

Dimensionally reduced supersymmetric theories retain a great deal of information regarding their higher dimensional origins. In superspace, this "memory" allows us to restore the action governing a reduced theory to that describing its higher-dimensional progenitor. We illustrate this by restoring four-dimensional N=4 Yang-Mills to its six-dimensional parent, N=(1,1) Yang-Mills. Supersymmetric truncation is introduced into this framework and used to obtain the N=1 action in six dimensions. We work in light-cone superspace, dealing exclusively with physical degrees of freedom.

Sudarshan Ananth

2005-10-07T23:59:59.000Z

332

Biochemical and biophysical characterization of the manganese transport regulator (MntR) from Bacillus subtilis  

E-Print Network (OSTI)

a Labconoco Water Pro Plus purification system. Buffers wereby a Labconoco Water Pro Plus purification system. All

Golynskiy, Misha

2007-01-01T23:59:59.000Z

333

The Many-Body Perturbation Theory of Brueckner and Goldstone  

Science Journals Connector (OSTI)

After a historical introduction to the many-body problem the landmark papers on the many-body perturbation theory by Brueckner (1955) and by Goldstone (1957) ... the present knowledge of many fermion systems. Brueckner

Werner Kutzelnigg

1992-01-01T23:59:59.000Z

334

Cloud Computing: Theory and Practice, 1st edition  

Science Journals Connector (OSTI)

Cloud Computing: Theory and Practice provides students and IT professionals with an in-depth analysis of the cloud from the ground up. Beginning with a discussion of parallel computing and architectures and distributed systems, the book turns to contemporary ...

Dan C. Marinescu

2013-06-01T23:59:59.000Z

335

Understanding predicted shifts in diazotroph biogeography using resource competition theory  

E-Print Network (OSTI)

We examine the sensitivity of the biogeography of nitrogen fixers to a warming climate and increased aeolian iron deposition in the context of a global earth system model. We employ concepts from the resource-ratio theory ...

Ward, B. A.

336

Dynamic energy budget theory and population ecology: lessons from Daphnia  

Science Journals Connector (OSTI)

...A. L. M. 2000 Dynamic energy and mass budgets in biological systems. New York, NY: Cambridge University...A. L. M. 2010 Dynamic energy budget theory for metabolic organization. New York, NY: Cambridge University...

2010-01-01T23:59:59.000Z

337

Network Inference, Analysis, and Modeling in Systems Biology  

Science Journals Connector (OSTI)

...sophisticated interplay of theory, computation, and experiment...Bollobas, B. (1979). Graph Theory: An introductory course...1968). General System Theory: Foundations, Development...governing embryonic stem cell fate decisions. Bioinformatics 21: 741-753...

Réka Albert

2007-11-30T23:59:59.000Z

338

Mesoscopic theory for inhomogeneous mixtures  

E-Print Network (OSTI)

Mesoscopic density functional theory for inhomogeneous mixtures of sperical particles is developed in terms of mesoscopic volume fractions by a systematic coarse-graining procedure starting form microscopic theory. Approximate expressions for the correlation functions and for the grand potential are obtained for weak ordering on mesoscopic length scales. Stability analysis of the disordered phase is performed in mean-field approximation (MF) and beyond. MF shows existence of either a spinodal or a $\\lambda$-surface on the volume-fractions - temperature phase diagram. Separation into homogeneous phases or formation of inhomogeneous distribution of particles occurs on the low-temperature side of the former or the latter surface respectively, depending on both the interaction potentials and the size ratios between particles of different species. Beyond MF the spinodal surface is shifted, and the instability at the $\\lambda$-surface is suppressed by fluctuations. We interpret the $\\lambda$-surface as a borderline between homogeneous and inhomogeneous (containing clusters or other aggregates) structure of the disordered phase. For two-component systems explicit expressions for the MF spinodal and $\\lambda$-surfaces are derived. Examples of interaction potentials of simple form are analyzed in some detail, in order to identify conditions leading to inhomogeneous structures.

A. Ciach

2010-10-22T23:59:59.000Z

339

Monolithic piezoelectric sensor (MPS) for sensing chemical, biochemical and physical measurands  

DOE Patents (OSTI)

A piezoelectric sensor and assembly for measuring chemical, biochemical and physical measurands is disclosed. The piezoelectric sensor comprises a piezoelectric material, preferably a crystal, a common metal layer attached to the top surface of the piezoelectric crystal, and a pair of independent resonators placed in close proximity on the piezoelectric crystal such that an efficacious portion of acoustic energy couples between the resonators. The first independent resonator serves as an input port through which an input signal is converted into mechanical energy within the sensor and the second independent resonator serves an output port through which a filtered replica of the input signal is detected as an electrical signal. Both a time delay and an attenuation at a given frequency between the input signal and the filtered replica may be measured as a sensor output. The sensor may be integrated into an assembly with a series feedback oscillator and a radio frequency amplifier to process the desired sensor output. In the preferred embodiment of the invention, a selective film is disposed upon the grounded metal layer of the sensor and the resonators are encapsulated to isolate them from the measuring environment. In an alternative embodiment of the invention, more than two resonators are used in order to increase the resolution of the sensor.

Andle, Jeffrey C. (Bangor, ME); Lec, Ryszard M. (Orono, ME)

2000-01-01T23:59:59.000Z

340

Non-Relativistic Superstring Theories  

SciTech Connect

We construct a supersymmetric version of the 'critical' non-relativistic bosonic string theory [1] with its manifest global symmetry. We introduce the anticommuting bc CFT which is the super partner of the {beta}{gamma} CFT. The conformal weights of the b and c fields are both 1/2. The action of the fermionic sector can be transformed into that of the relativistic superstring theory. We explicitly quantize the theory with manifest SO(8) symmetry and find that the spectrum is similar to that of Type IIB superstring theory. There is one notable difference: the fermions are non-chiral. We further consider 'noncritical' generalizations of the supersymmetric theory using the superspace formulation. There is an infinite range of possible string theories similar to the supercritical string theories. We comment on the connection between the critical non-relativistic string theory and the lightlike Linear Dilaton theory.

Kim, Bom Soo

2007-12-14T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

Variational transition state theory  

SciTech Connect

This research program involves the development of variational transition state theory (VTST) and semiclassical tunneling methods for the calculation of gas-phase reaction rates and selected applications. The applications are selected for their fundamental interest and/or their relevance to combustion.

Truhlar, D.G. [Univ. of Minnesota, Minneapolis (United States)

1993-12-01T23:59:59.000Z

342

Hightlights in Proof Theory  

Science Journals Connector (OSTI)

This is a survey of some of the principal developments in proof theory from its inception in the 1920s, at the hands of David Hilbert, up to the 1960s. Hilbert’s aim was to use this as a tool in his finitary c...

Solomon Feferman Lec. 1.

2000-01-01T23:59:59.000Z

343

Update on Charmonium Theory  

SciTech Connect

In this invited presentation, I review some recent developments in the theory of charmonium that appear likely to be of importance for future experimental studies in this field. The specific areas considered are double charmonium production. LQCD studies of charmonium, recent results for hadron loops, cc{bar} production cross sections at PANDA, charm molecules, and two recent developments, "charmiscelleny".

Barnes, Ted {F E } [ORNL

2010-01-01T23:59:59.000Z

344

Nuclear effective field theory on the lattice  

E-Print Network (OSTI)

In the low-energy region far below the chiral symmetry breaking scale (which is of the order of 1 GeV) chiral perturbation theory provides a model-independent approach for quantitative description of nuclear processes. In the two- and more-nucleon sector perturbation theory is applicable only at the level of an effective potential which serves as input in the corresponding dynamical equation. To deal with the resulting many-body problem we put chiral effective field theory (EFT) on the lattice. Here we present the results of our lattice EFT study up to next-to-next-to-leading order in the chiral expansion. Accurate description of two-nucleon phase-shifts and ground state energy ratio of dilute neutron matter up to corrections of higher orders shows that lattice EFT is a promising tool for a quantitative description of low-energy few- and many-body systems.

Hermann Krebs; Bugra Borasoy; Evgeny Epelbaum; Dean Lee; Ulf-G. Meiß ner

2008-10-01T23:59:59.000Z

345

Biochemical Responses of European Sea Bass (Dicentrarchus labrax L.) to the Stress Induced by Off Shore Experimental Seismic Prospecting  

Science Journals Connector (OSTI)

The paper reports the results of an experimental seismic survey in the open sea by an air gun, carried out to evaluate the effects of air gun acoustic waves on marine animals. Air gun blast exposition was found to have a marked influence on confined Dicentrarchus labrax. Our data, in fact, demonstrated a biochemical response to acoustic stress induced by air gun blasts. Variations of cortisol, glucose, lactate, AMP, ADP, ATP and cAMP in different tissues of D. labrax, indicate that fish have a typical primary and secondary stress response after air gun detonations. Radiography indicates that air gun blasts do not induce any macroscopic effect on skeletal apparatus. The variations of biochemical parameters returned within physiological values within 72 h indicating a rapid recovery of homeostasis after acoustic stress and no mortality was observed.

A Santulli; A Modica; C Messina; L Ceffa; A Curatolo; G Rivas; G Fabi; V D’Amelio

1999-01-01T23:59:59.000Z

346

Theories of the Earth's Magnetism  

Science Journals Connector (OSTI)

The earth's core may be assumed to consist of fluid metal surrounding a solid inner core which probably contains a source of heat to drive convection, but it is not possible at present to select between various possible types of convective motion in the fluid core. Types considered are characterized by some sort of radial flow streams and a tendency for the fluid to rotate on the average more rapidly near the axis to conserve angular momentum during the circulation. Though the actual flow may be quite complicated, proposed mechanisms for generating a terrestrial magnetic field are considered for some oversimplified flow patterns in an attempt to indicate what features of the flow may provide the most important possibilities for field generation. It is suggested that, without a field to absorb the energy, the flow would be accelerated indefinitely and would evolve through a succession of flow patterns, some of which would be expected to have the properties to generate a field capable of preventing further acceleration and prolonging the status quo, thus making it likely that the earth should have a field.The generating mechanisms discussed include two induction theories, the dynamo theory of Elsasser and Bullard, which is discussed at length both in terms of velocity-current systems portrayed by elaborate models and in hydromagnetic terms, and the "twisted-kink" theory of Alvèn which is discussed only hydromagnetically. Each of these theories depends on amplifying an initial stray magnetic field up to a point where it dissipates all of the available energy, and is at least in this respect analogous to a conventional electrical generator but without a ferromagnetic core. Other mechanisms discussed depend either on the thermoelectric effect with junctions at the core-mantle interface or on a combination of thermoelectric and Hall effects in the core and mantle.If the convective flow is rather irregular, the observed slow westward drift of the detailed pattern of the earth's field is attributed to the vanishing of the total torque on the core by the magnetic field threading through the core and mantle, as a result of an eastward drag on the outer part of the core rotating more slowly in space and a westward drag on the more rapidly rotating part of the core near the axis, with the presumption that the observed magnetic pattern is characteristic of the westward-drifting outer part. If the flow instead involves a jet stream, the flow in the jet may under some circumstances be expected to be eastward for reasons comparable to temperate-zone meteorology, so the magnetic field should exert a westward drag on it leading to the westward drift of the flow pattern.

D. R. Inglis

1955-04-01T23:59:59.000Z

347

A Geometric Hamilton-Jacobi Theory for Classical Field Theories  

E-Print Network (OSTI)

In this paper we extend the geometric formalism of the Hamilton-Jacobi theory for hamiltonian mechanics to the case of classical field theories in the framework of multisymplectic geometry and Ehresmann connections.

M. de Leon; J. C. Marrero; D. Martin de Diego

2008-01-08T23:59:59.000Z

348

Argonne Physics Division - Theory Group  

NLE Websites -- All DOE Office Websites (Extended Search)

Division Seminar: R-150 @ 3:30pm Division Seminar: R-150 @ 3:30pm 14 April 2011 Stefano Gandolfi Los Alamos National Laboratory stefano@lanl.gov Quantum Monte Carlo Study of Strongly Correlated Fermions: Neutron Matter, Neutron Stars and Cold Atoms Division Seminar: R-150 @ 3:30pm 31 March 2011 Lucas Platter Chalmers University of Technology, Göteborg platter@chalmers.se Effective Field Theories for Nuclear Systems Division Seminar: R-150 @ 3:30pm 17 February 2011 Alexandros Gezerlis University of Washington gezerlis@uw.edu Bridging the Gap: Fermions in Nuclear Structure and Nuclear Astrophysics Special Day: Tuesday 15 February 2011 Louis H. Kauffman UIC kauffman@uic.edu Topological Quantum Information and the Jones Polynomial Division Seminar: R-150 @ 3:30pm 10 February 2011 JoaquÃ-n Drut

349

Nolen and Pollard 1 6/17/2008 STRUCTURE AND BIOCHEMICAL PROPERTIES OF FISSION YEAST ARP2/3  

E-Print Network (OSTI)

Nolen and Pollard 1 6/17/2008 STRUCTURE AND BIOCHEMICAL PROPERTIES OF FISSION YEAST ARP2/3 COMPLEX-mail:bradley.nolen@yale.edu Running title: Arp2 Arp2/3 complex Arp2/3 (Actin-related protein 2/3) complex is a seven-subunit complex of the Arp2 subunit in the function of Arp2/3 complex by isolating a version of the complex lacking Arp2 (Arp

350

Mathematical Structure of Quantum Decision Theory  

E-Print Network (OSTI)

One of the most complex systems is the human brain whose formalized functioning is characterized by decision theory. We present a "Quantum Decision Theory" of decision making, based on the mathematical theory of separable Hilbert spaces. This mathematical structure captures the effect of superposition of composite prospects, including many incorporated intentions, which allows us to explain a variety of interesting fallacies and anomalies that have been reported to particularize the decision making of real human beings. The theory describes entangled decision making, non-commutativity of subsequent decisions, and intention interference of composite prospects. We demonstrate how the violation of the Savage's sure-thing principle (disjunction effect) can be explained as a result of the interference of intentions, when making decisions under uncertainty. The conjunction fallacy is also explained by the presence of the interference terms. We demonstrate that all known anomalies and paradoxes, documented in the context of classical decision theory, are reducible to just a few mathematical archetypes, all of which finding straightforward explanations in the frame of the developed quantum approach.

V. I. Yukalov; D. Sornette

2008-08-01T23:59:59.000Z

351

Biochem. J. (2006) 393, 447457 (Printed in Great Britain) doi:10.1042/BJ20050832 447 Kinetic, inhibition and structural studies on 3-oxoacyl-ACP reductase from  

E-Print Network (OSTI)

triclosan. In the present paper, we report the biochemical properties and 1.5 Ã? (1 Ã? = 0.1 nm) crystal inhibition of malaria FAS II is possible with drugs such as thiolactomycin [5] and triclosan [9]. Although

Schnaufer, Achim

352

The crystal structure and biochemical characterization of Kif15: a bifunctional molecular motor involved in bipolar spindle formation and neuronal development  

Science Journals Connector (OSTI)

The structural and biochemical study of Kif15 provides insight into this potential drug target and allows comparison with Eg5, a kinesin that partially shares the functions of Kif15.

Klejnot, M.

2013-12-24T23:59:59.000Z

353

Electronic Structure: Density Functional Theory S. Kurth, M. A. L. Marques, and E. K. U. Gross  

E-Print Network (OSTI)

Electronic Structure: Density Functional Theory S. Kurth, M. A. L. Marques, and E. K. U. Gross: July 5, 2003) PACS numbers: 71.15.Mb, 31.15.Ew 1 #12;I. INTRODUCTION Density functional theory (DFT systems becomes prohibitive. A different approach is taken in density functional theory where, instead

Gross, E.K.U.

354

A microscopic theory of fully spinpolarized 3He H. H. Glyde and S. I. Hernadi  

E-Print Network (OSTI)

in which to test a Brueckner-Hartree-Feck (BHF) theorysT-s~ of dense Fermi systems. While the BHF theory) theory2s-2s in which the Galitskii-Feynman (GF) T-matrix replaces the Brueckner T-matrix. To identify

Glyde, Henry R.

355

Quantum probability from decision theory?  

Science Journals Connector (OSTI)

...128. Cox, R. T. 1946 Probability, frequency, and reasonable...Finetti, B. 1972 Theory of probability, vols I and II. Wiley...1999 Quantum theory of probability and decisions. Proc. R...1972 The foundations of statistics. Dover. Von Neumann, J...

2000-01-01T23:59:59.000Z

356

Decision Theory and Real Decisions:  

Science Journals Connector (OSTI)

Decision theory has been extremely successful in various ways. As a theory per se..., it has provided interesting research opportunities stemming from an elegant central core. It has served as a basis for identif...

Kenneth R. MacCrimmon

1999-01-01T23:59:59.000Z

357

Theory Seminar Schedule  

NLE Websites -- All DOE Office Websites (Extended Search)

6-2007 6-2007 Click on a title to read an abstract, if available (underlined). 10 July 2007 Special Day: Tuesday, 3:00pm Robert Wiringa Argonne National Laboratory wiringa@theory.phy.anl.gov Dependence of nuclear binding on hadronic mass variation 3 July 2007 Special Day and Time: Tuesday, 10:30am Renato Higa University of Bonn, Germany higa@itkp.uni-bonn.de Coulomb interactions within Halo EFT 5 June 2007 Special Day and Time: Tuesday, 10.30am Omar Benhar Istituto Nazionale di Fisica Nucleare, Rome, Italy benhar@roma1.infn.it The equation of state of neutron star matter and gravitational wave emission 29 May 2007 Special Day: Tuesday Ulrich Mosel Giessen University, Germany Ulrich.Mosel@theo.physik.uni-giessen.de Hadrons in Medium - Theory meets experiment 10 May 2007

358

Field Theory of Matter  

Science Journals Connector (OSTI)

A speculative field theory of matter is developed. Simple computational methods are used in a preliminary survey of its consequences. The theory exploits the known properties of leptons by means of a principle of symmetry between electrical and nucleonic charge. There are fundamental fields with spins 0, ½, 1. The spinless field is neutral. Spin ½ and 1 fields can carry both electrical and nucleonic charge. The multiplicity of any nonzero charge is 3. Explicit dynamical mechanisms for the breakdown of unitary symmetry and for the muon-electron mass difference are given. A more general view of lepton properties is proposed. Mass relations for baryon and meson multiplets are derived, together with approximate couplings among the multiplets. The weakness of ? production in ?-N collisions and the suppression of the ???+? decay is explained.

Julian Schwinger

1964-08-10T23:59:59.000Z

359

Nonlocal theory of accelerated observers  

Science Journals Connector (OSTI)

A nonlocal theory of accelerated observers is developed on the basis of the hypothesis that an electromagnetic wave can never stand completely still with respect to an observer. In the eikonal approximation, the nonlocal theory reduces to the standard extension of Lorentz invariance to accelerated observers. The validity of the nonlocal theory would exclude the possibility of existence of any basic scalar field in nature. The observational consequences of this theory are briefly discussed.

Bahram Mashhoon

1993-05-01T23:59:59.000Z

360

Biochemical Markers of Bone Turnover in Percutaneous Vertebroplasty for Osteoporotic Compression Fracture  

SciTech Connect

Purpose. To evaluate relationships between biochemical markers of bone turnover, bone mineral density, and new compression fractures following vertebroplasty. Methods. Initially, we enrolled 30 consecutive patients with vertebral compression fractures caused by osteoporosis. Twenty-three of the 30 patients visited our hospital for follow-up examinations for more than 4 weeks after vertebroplasty. The patients were divided into two groups: patients with new fractures (group F) and patients with no new fractures (group N). We analyzed differences in the following parameters between these two groups: serum bone alkaline phosphatase, urinary crosslinked N-telopeptide of type I collagen, urinary deoxypyridinoline, and bone mineral density. Next, the patients were divided into another two groups: patients with higher risk (group H: urinary crosslinked N-telopeptide of type I collagen >54.3 nmol BCE/mmol Cr or urinary deoxypyridinoline >7.6 nmol/mmol Cr, and serum bone alkaline phosphatase <29.0 U/l) and patients with lower risk (group L). We analyzed the difference in the rate of new fractures between these two groups. Results. We identified 9 new fractures in 7 patients. There were no significant differences between groups F and N. We identified 5 new fractures in 3 of the 4 patients in group H, and 4 new fractures in 4 of the 19 patients in group L. There was a significant difference in the rate of new fractures between groups H and L. Conclusions. A combination of high levels of bone resorption markers and normal levels of bone formation markers may be associated with increased risk of new recurrent fractures after percutaneous vertebroplasty.

Komemushi, Atsushi, E-mail: kome64@yo.rim.or.jp; Tanigawa, Noboru; Kariya, Shuji; Kojima, Hiroyuki; Shomura, Yuzo; Tokuda, Takanori; Nomura, Motoo; Terada, Jiro; Kamata, Minoru; Sawada, Satoshi [Kansai Medical University, Department of Radiology (Japan)

2008-03-15T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

Molecular and biochemical characterization of the jasmonic acid methyltransferase gene from black cottonwood (Populus trichocarpa)  

SciTech Connect

Methyl jasmonate is a metabolite known to be produced by many plants and has roles in diverse biological processes. It is biosynthesized by the action of S-adenosyl-L-methionine:jasmonic acid carboxyl methyltransferase (JMT), which belongs to the SABATH family of methyltransferases. Herein is reported the isolation and biochemical characterization of a JMT gene from black cottonwood (Populus trichocarpa). The genome of P. trichocarpa contains 28 SABATH genes (PtSABATH1 to PtSABATH28). Recombinant PtSABATH3 expressed in Escherichia coli showed the highest level of activity with jasmonic acid (JA) among carboxylic acids tested. It was therefore renamed PtJMT1. PtJMT1 also displayed activity with benzoic acid (BA), with which the activity was about 22% of that with JA. PtSABATH2 and PtSABATH4 were most similar to PtJMT1 among all PtSABATHs. However, neither of them had activity with JA. The apparent Km values of PtJMT1 using JA and BA as substrate were 175 lM and 341 lM, respectively. Mutation of Ser-153 and Asn-361, two residues in the active site of PtJMT1, to Tyr and Ser respectively, led to higher specific activity with BA than with JA. Homology-based structural modeling indicated that substrate alignment, in which Asn-361 is involved, plays a role in determining the substrate specificity of PtJMT1. In the leaves of young seedlings of black cottonwood, the expression of PtJMT1 was induced by plant defense signal molecules methyl jasmonate and salicylic acid and a fungal elicitor alamethicin, suggesting that PtJMT1 may have a role in plant defense against biotic stresses. Phylogenetic analysis suggests that PtJMT1 shares a common ancestor with the Arabidopsis JMT, and functional divergence of these two apparent JMT orthologs has occurred since the split of poplar and Arabidopsis lineages.

Zhao, Nan [ORNL; Yao, Jianzhuang [University of Tennessee, Knoxville (UTK); Chaiprasongsuk, Minta [University of Tennessee, Knoxville (UTK); Li, Guanglin [University of Tennessee, Knoxville (UTK); Guan, Ju [University of Tennessee, Knoxville (UTK); Tschaplinski, Timothy J [ORNL; Guo, Hong [University of Tennessee, Knoxville (UTK); Chen, Feng [University of Tennessee, Knoxville (UTK)

2013-01-01T23:59:59.000Z

362

Quantum field theories around a large-Z nucleus  

Science Journals Connector (OSTI)

We analyze quantum electrodynamics around a hypothetical highly charged (Z?137) nucleus by treating it as an external source. In contrast with the foregoing analyses which rely on the one-particle theory we construct a framework which enables us to create the quantum-field-theoretic treatment of the system. To deal with such a nonperturbative question we develop novel truncation and approximation procedures. Keeping only the lowest partial wave of the electron and the photon fields we transcribe the system into the form of two-dimensional fermion theory. We further convert the theory into a two-dimensional boson theory by using a bosonization technique. We then argue that the semiclassical approximation in the resultant boson theory is reasonably good and in particular does take care of the quantum effects of the original fermion theory. We investigate the asymptotic particle state of the theory and find that electrons appear as topological solitons. By analyzing the boson theory with an external source classically we show that the ground state undergoes the phase transition at a certain value of Z (Z?150 for nucleus size ?20 fm) from the normal QED vacuum to an ‘‘anomalous’’ one which is characterized by the occurrence of real pair creation of electrons and positrons. Our result is confronted with the one obtained by the one-particle-theoretic treatment. Some comments are made on the possibility of understanding the peak structure in positron spectrum observed in heavy-ion collisions.

Yumi Hirata and Hisakazu Minakata

1986-10-15T23:59:59.000Z

363

Informational derivation of quantum theory  

SciTech Connect

We derive quantum theory from purely informational principles. Five elementary axioms - causality, perfect distinguishability, ideal compression, local distinguishability, and pure conditioning - define a broad class of theories of information processing that can be regarded as standard. One postulate - purification - singles out quantum theory within this class.

Chiribella, Giulio; D'Ariano, Giacomo Mauro; Perinotti, Paolo [Perimeter Institute for Theoretical Physics, 31 Caroline Street North, Ontario, N2L 2Y5 (Canada); QUIT Group, Dipartimento di Fisica ''A. Volta'' and INFN Sezione di Pavia, via Bassi 6, I-27100 Pavia (Italy)

2011-07-15T23:59:59.000Z

364

Density Functional Theory for Superconductors  

E-Print Network (OSTI)

Density Functional Theory for Superconductors N. N. LATHIOTAKIS,1,2 M. A. L. MARQUES,1,2,3 M. LU; density functional theory; critical temperature; exchange and correlation; phonon and theoretical chemistry is density functional theory (DFT). Its foundations were established in the mid-1960s

Gross, E.K.U.

365

Quantum Probability from Decision Theory?  

E-Print Network (OSTI)

In a recent paper (quant-ph/9906015), Deutsch claims to derive the "probabilistic predictions of quantum theory" from the "non-probabilistic axioms of quantum theory" and the "non-probabilistic part of classical decision theory." We show that his derivation fails because it includes hidden probabilistic assumptions.

H. Barnum; C. M. Caves; J. Finkelstein; C. A. Fuchs; R. Schack

1999-07-07T23:59:59.000Z

366

Epistemic Decision Theory Hilary Greaves  

E-Print Network (OSTI)

Epistemic Decision Theory Hilary Greaves Faculty of Philosophy, University of Oxford hilary an epistemic decision theory, in a consequentialist spirit. Previous work has focused on cases in which and causal decision theory, and of the Newcomb Problem and `Psychopath Button' Problem. A variant of causal

Fitelson, Branden

367

Density Functional Theory (DFT) Simulated Annealing (SA)  

E-Print Network (OSTI)

. . . . . . . . 9 2009 #12;! " # $ % & - " # $ %' ! " # # $ % & # ( # " ) Density Functional Theory) % Lattice-Boltzmann (LBM) #12;! " # $ % & - " # $ %' ! " # # $ % & # ( # " ) Density Functional Theory (DFT;! " # $ % & - " # $ %' ! " # # $ % & # ( # " ) Density Functional Theory (DFT) Simulated Annealing (SA) Monte Carlo &$ ' ' (GCMC

368

Applying Effective Theories to Collider Phenomenology  

E-Print Network (OSTI)

Theories to Collider Phenomenology by Grigol GagikovichTheories to Collider Phenomenology Copyright 2010 by GrigolTheories to Collider Phenomenology by Grigol Gagikovich

Ovanesyan, Grigol

2010-01-01T23:59:59.000Z

369

Description of the course Math609/BMC609/ Biochem609/BMI609: Mathematical Methods in Systems Biology  

E-Print Network (OSTI)

: - Introduction to mathematical and computational modeling - Introduction to MATLAB for visualization projects and collaborative interdisciplinary team projects. The choice of any particular project's topic will be based on student interest, and could be based on a student's ongoing research interest. Each project

Craciun, Gheorghe

370

Taking industry seriously in information systems research  

Science Journals Connector (OSTI)

In this essay, we argue that industry receives little attention in information systems research and theory, despite its increasingly important influence on IS activities. This is evident both in the narrow range of industries examined in IS research ... Keywords: industry context, information systems theory, institutional theory

Mike W. Chiasson; Elizabeth Davidson

2005-12-01T23:59:59.000Z

371

Temperature Modeling in Activated Sludge Systems: A Case Study  

E-Print Network (OSTI)

Temperature Modeling in Activated Sludge Systems: A Case Study Jacek Makinia, Scott A. Wells, Piotr Zima ABSTRACT: A model of temperature dynamics was developed as part of a general model of activated-sludge biochemical-energy inputs and other activated-sludge, heat-balance terms. All the models were tested under

Wells, Scott A.

372

Theory of Pseudomodes in Quantum Optical Processes  

E-Print Network (OSTI)

This paper deals with non-Markovian behaviour in atomic systems coupled to a structured reservoir of quantum EM field modes, with particular relevance to atoms interacting with the field in high Q cavities or photonic band gap materials. In cases such as the former, we show that the pseudo mode theory for single quantum reservoir excitations can be obtained by applying the Fano diagonalisation method to a system in which the atomic transitions are coupled to a discrete set of (cavity) quasimodes, which in turn are coupled to a continuum set of (external) quasimodes with slowly varying coupling constants and continuum mode density. Each pseudomode can be identified with a discrete quasimode, which gives structure to the actual reservoir of true modes via the expressions for the equivalent atom-true mode coupling constants. The quasimode theory enables cases of multiple excitation of the reservoir to now be treated via Markovian master equations for the atom-discrete quasimode system. Applications of the theory to one, two and many discrete quasimodes are made. For a simple photonic band gap model, where the reservoir structure is associated with the true mode density rather than the coupling constants, the single quantum excitation case appears to be equivalent to a case with two discrete quasimodes.

B. J. Dalton; S. M. Barnett; B. M. Garraway

2001-02-28T23:59:59.000Z

373

Observer Localization in Multiverse Theories Marcus Hutter  

E-Print Network (OSTI)

battle; and the ongoing discussion of whether string theory is a theory of everything or more a theory's oscillating universe, Smolin's baby universe theory, Everett's many-worlds interpretation of quantum mechanics

Hutter, Marcus

374

Quantum Decision Theory  

E-Print Network (OSTI)

We argue that, contrary to conventional wisdom, decision theory is not invariant to the physical environment in which a decision is made. Specifically, we show that a decision maker (DM) with access to quantum information resources may be able to do strictly better than a DM with access only to classical information resources. In this respect, our findings are somewhat akin to those in computer science that have established the superiority of quantum over classical algorithms for certain problems. We treat three kinds of decision tree (Kuhn [1950], [1953]): Kuhn trees in which the DM does or does not have perfect recall, and non-Kuhn trees.

Adam Brandenburger; Pierfrancesco La Mura

2011-07-01T23:59:59.000Z

375

Neutrinos: Theory and Phenomenology  

SciTech Connect

The theory and phenomenology of neutrinos will be addressed, especially that relating to the observation of neutrino flavor transformations. The current status and implications for future experiments will be discussed with special emphasis on the experiments that will determine the neutrino mass ordering, the dominant flavor content of the neutrino mass eigenstate with the smallest electron neutrino content and the size of CP violation in the neutrino sector. Beyond the neutrino Standard Model, the evidence for and a possible definitive experiment to confirm or refute the existence of light sterile neutrinos will be briefly discussed.

Parke, Stephen

2013-10-22T23:59:59.000Z

376

An Interpretive, Multilevel Theory of Scenario Planning: Advancing Human Resource Development Theory Building  

E-Print Network (OSTI)

This study advances theory building as the process of modeling real-world phenomena and uses a theory-to-research strategy in the theory building process. A five-step theory building methodology constitutes applied theory building in general...

Matlock, James 1958-

2012-12-01T23:59:59.000Z

377

Phoxonic crystals—a new platform for chemical and biochemical sensors  

Science Journals Connector (OSTI)

It must be noted as well that like QCM, Micro-Electro-Mechanical-Systems (MEMS) or Micro-Opto-Mechanical Systems sensors or Surface Plasmon Resonance phoxonic crystal sensors are inherently non-specific. They bec...

Ralf Lucklum; Mikhail Zubtsov; Aleksandr Oseev

2013-08-01T23:59:59.000Z

378

Scalar Field Theories with Polynomial Shift Symmetries  

E-Print Network (OSTI)

We continue our study of naturalness in nonrelativistic QFTs of the Lifshitz type, focusing on scalar fields that can play the role of Nambu-Goldstone (NG) modes associated with spontaneous symmetry breaking. Such systems allow for an extension of the constant shift symmetry to a shift by a polynomial of degree $P$ in spatial coordinates. These "polynomial shift symmetries" in turn protect the technical naturalness of modes with a higher-order dispersion relation, and lead to a refinement of the proposed classification of infrared Gaussian fixed points available to describe NG modes in nonrelativistic theories. Generic interactions in such theories break the polynomial shift symmetry explicitly to the constant shift. It is thus natural to ask: Given a Gaussian fixed point with polynomial shift symmetry of degree $P$, what are the lowest-dimension operators that preserve this symmetry, and deform the theory into a self-interacting scalar field theory with the shift symmetry of degree $P$? To answer this (essen...

Griffin, Tom; Horava, Petr; Yan, Ziqi

2014-01-01T23:59:59.000Z

379

Unified Theory of Ideals  

E-Print Network (OSTI)

Unified field theories try to merge the internal symmetries of the standard model into a single group. Here we lay out something different. We give evidence that a theory may be unified in alternate ways; that is, instead of aiming to unify the internal symmetries into a single group, the groups may be unified together with the quarks and leptons that they act on. Furthermore, the (3+1) Lorentz transformations may likewise be unified with the scalars, spinors, four-vectors and field strength tensors that they act on. These simplifications occur because the representations can be found in the form of an algebra acting on itself. The approach described in this paper is meant to tie everything into the Dixon algebra: RxCxHxO, the tensor product of the four normed division algebras over R, whose connection to the standard model was earlier advocated for in [1]. As we show, this method very quickly uncovers all of the Lorentz representations of the standard model, and a set of states behaving like one full generation of quarks and leptons.

Cohl Furey

2014-04-16T23:59:59.000Z

380

The Hamilton-Jacobi Theory, Quantum Mechanics and General Relativity  

E-Print Network (OSTI)

The Hamilton-Jacobi theory of Classical Mechanics can be extended in a novel manner to systems which are fuzzy in the sense that they can be represented by wave functions. A constructive interference of the phases of the wave functions then gives us back Classical systems. In a suitable description this includes both Quantum Theory and General Relativity in the well known superspace formulation. However, there are several nuances which provide insight into these latter systems. All this is considered in this paper together with suitable generalization, to cascades of super universes.

B. G. Sidharth

2005-10-12T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

String?coupled pendulum oscillators: Theory and experiment  

Science Journals Connector (OSTI)

A coupled?oscillator system is given which is readily set up using only household materials. The normal?mode analysis of this system is worked out and an experiment or demonstration is recommended in which one verifies the theory by measuring two times and four lengths.

Michael J. Moloney

1978-01-01T23:59:59.000Z

382

Non-Equilibrium Conformal Field Theories with Impurities  

E-Print Network (OSTI)

We present a construction of non-equilibrium steady states within conformal field theory. These states sustain energy flows between two quantum systems, initially prepared at different temperatures, whose dynamical properties are represented by two, possibly different, conformal field theories connected through an impurity. This construction relies on a real time formulation of conformal defect dynamics based on a field scattering picture parallelizing - but yet different from - the Euclidean formulation. We present the basic characteristics of this formulation and give an algebraic construction of the real time scattering maps that we illustrate in the case of SU(2)-based conformal field theories.

D. Bernard; B. Doyon; J. Viti

2015-01-20T23:59:59.000Z

383

From a Relativistic Point Particle to String Theory  

E-Print Network (OSTI)

Using a classical action associated to a point-particle in (1+1)-dimensions the classical string theory is derived. In connection with this result two aspects are clarified: First, the point particle in (1+1)-dimensions is not an ordinary relativistic system, but rather a some kind of a relativistic top; and second, through the quantization of such a kind of top the ordinary string theory is not obtained, but rather a $\\sigma$-model associated to a non-compact group which may be understood as an extended string theory.

J. A. Nieto

1995-08-03T23:59:59.000Z

384

Cosmological solutions of time varying speed of light theories  

E-Print Network (OSTI)

We consider scalar-tensor theory for describing varying speed of light in a spatially flat FRW space-time. We find some exact solutions in the metric and Palatini formalisms. Also we examine the dynamics of this theory by dynamical system method assuming a $\\Lambda$CDM background and we find some exact solutions by considering the character of critical points of the theory in both formalisms. We show that for any attractor the form of non-minimal coupling coefficient is quadratic in terms of the scalar field $\\Psi$. Also we show that only attractors of the de Sitter era satisfy the horizon criteria.

Mahmood Roshan; Maryam Nouri; Fatimah Shojai

2009-01-21T23:59:59.000Z

385

The modelling of biochemical-thermal coupling effect on gas generation and transport in MSW landfill  

Science Journals Connector (OSTI)

The landfill gas generation was investigated based on the theories of the thermodynamics, microbial dynamics and chemical dynamics. The coupling model was developed for describing the gas transport and heat release. And the relationship between the gas generation rate and the temperature was proposed. The parameters in the gas generation model were obtained by bioreactor test in order to evaluate the volume of gas production of the Erfeishan landfill in China. The simulation results shown that the operating life of the landfill will be overestimated if the model does not consider the thermal effect during degradation of the solid substrate.

Liu Lei; Liang Bing; Xue Qiang; Zhao Ying; Yang Chun

2011-01-01T23:59:59.000Z

386

Teaching lean construction: perspectives on theory and practice  

E-Print Network (OSTI)

required them to visit the glossary on the LCI website to identify all concepts addressed by the Airplane Game. In addition, within the first two weeks, he also introduced the Toyota Production System and Toyota Way principles (Liker 2003... of course readings introduced lean theory (the Toyota Way and value stream mapping) (Liker 2003), the transformation-flow-value (TFV) theory of production (Koskela 2000), and lean project delivery (definition, design, construction, and IPD). The second...

Tsao, Cynthia C. Y.; Azambuja, Marcelo; Hamzeh, Farook R.; Rybkowski, Zofia K.

2013-07-31T23:59:59.000Z

387

Bekenstein bound in asymptotically free field theory  

SciTech Connect

For spatially bounded free fields, the Bekenstein bound states that the specific entropy satisfies the inequality (S/E){<=}2{pi}R, where R stands for the radius of the smallest sphere that circumscribes the system. The validity of the Bekenstein bound in the asymptotically free side of the Euclidean ({lambda}{phi}{sup 4}){sub d} scalar field theory is investigated. We consider the system in thermal equilibrium with a reservoir at temperature {beta}{sup -1} and defined in a compact spatial region without boundaries. Using the effective potential, we discuss the thermodynamic of the model. For low and high temperatures the system presents a condensate. We present the renormalized mean energy E and entropy S for the system and show in which situations the specific entropy satisfies the quantum bound.

Arias, E.; Svaiter, N. F.; Menezes, G. [Centro Brasileiro de Pesquisas Fisicas-CBPF, Rua Dr. Xavier Sigaud 150, Rio de Janeiro, RJ, 22290-180 (Brazil); Instituto de Fisica Teorica, Universidade Estadual Paulista, Rua Dr. Bento Teobaldo Ferraz 271, Bloco II, Barra Funda, Sao Paulo, SP, 01140-070 (Brazil)

2010-08-15T23:59:59.000Z

388

Theory of delayed thermal fluorescence  

Science Journals Connector (OSTI)

A theory of nonradiative thermal activation involved in delayed thermal fluorescence has been developed from the viewpoint of the breakdown of the Born-Oppenheimer adiabatic approximation.

S. H. Lin

1971-01-01T23:59:59.000Z

389

Twistor String Theory and QCD  

SciTech Connect

The author reviews recent progress in using twistor-inspired methods to compute perturbative scattering amplitudes in gauge theory, for application to collider physics.

Dixon, Lance J.; /SLAC

2005-12-08T23:59:59.000Z

390

New Interactions in Effective Theory.  

E-Print Network (OSTI)

??I studied the physics beyond the Standard Model by using effective field theory. I built models of new heavy physics and obtained their low energy… (more)

Kim, Kyungwook

2010-01-01T23:59:59.000Z

391

Theory Seminar Schedule  

NLE Websites -- All DOE Office Websites (Extended Search)

7-2008 7-2008 Click on a title to read an abstract, if available (underlined). 12 June 2008 Kristina Sviratcheva Louisiana State University kristina@rouge.phys.lsu.edu Symplectic Ab Initio No-Core Shell Model - Taming the Model Space Dilemma 5 June 2008 Wick Haxton INT, University of Washington haxton@u.washington.edu Probing Time-odd Moments in Atoms and Nuclei 1 May 2008 Wolfgang Bentz Tokai University, Japan bentz@keyaki.cc.u-tokai.ac.jp Fragmentation functions in an effective quark theory 17 April 2008 Special Time: 10:30am Dmitry G. Yakovlev Ioffe Physico-Technical Institute, St.Petersburg yak@astro.ioffe.rssi.ru Landau and Neutron Stars Tuesday 15 April 2008 Special Day Jochen Wambach GSI and TU Darmstadt J.Wambach@gsi.de Viscosity in the Nambu--Jona-Lasinio Model Tuesday 8 April 2008

392

Chameleon Field Theories  

E-Print Network (OSTI)

Chameleons are light scalar fields with remarkable properties. Through the interplay of self-interactions and coupling to matter, chameleon particles have a mass that depends on the ambient matter density. The manifestation of the fifth force mediated by chameleons therefore depends sensitively on their environment, which makes for a rich phenomenology. In this article, we review two recent results on chameleon phenomenology. The first result a pair of no-go theorems limiting the cosmological impact of chameleons and their generalizations: i) the range of the chameleon force at cosmological density today can be at most ~Mpc; ii) the conformal factor relating Einstein- and Jordan-frame scale factors is essentially constant over the last Hubble time. These theorems imply that chameleons have negligible effect on the linear growth of structure, and cannot account for the observed cosmic acceleration except as some form of dark energy. The second result pertains to the quantum stability of chameleon theories. We ...

Khoury, Justin

2013-01-01T23:59:59.000Z

393

Anthropic decision theory  

E-Print Network (OSTI)

This paper sets out to solve the Sleeping Beauty problem and various related anthropic (self-locating belief) problems, not through the calculation of anthropic probabilities, but through finding the correct decision to make. Given certain simple assumptions, it turns out to be possible to do so without knowing the underlying anthropic probabilities. Most common anthropic problems are underspecified from the decision perspective, and this can explain some of the differing intuitions in the subject: selfless and selfish agents, total and average utilitarians, will all reach different decisions in the same problem. These results are formalised into an anthropic decision theory, that is then used to solve many anthropic problems and paradoxes, such as the Presumptuous Philosopher, Adam and Eve, and Doomsday problems.

Stuart Armstrong

2011-10-28T23:59:59.000Z

394

Axions in String Theory  

SciTech Connect

In the context of string theory, axions appear to provide the most plausible solution of the strong CP problem. However, as has been known for a long time, in many string-based models, the axion coupling parameter Fa is several orders of magnitude higher than the standard cosmological bounds. We re-examine this problem in a variety of models, showing that Fa is close to the GUT scale or above in many models that have GUT-like phenomenology, as well as some that do not. On the other hand, in some models with Standard Model gauge fields supported on vanishing cycles, it is possible for Fa to be well below the GUT scale.

Svrcek, Peter; /Stanford U., Phys. Dept. /SLAC; Witten, Edward; /Princeton, Inst. Advanced Study

2006-06-09T23:59:59.000Z

395

Gauge Theories of Josephson Junction Arrays  

E-Print Network (OSTI)

We show that the zero-temperature physics of planar Josephson junction arrays in the self-dual approximation is governed by an Abelian gauge theory with periodic mixed Chern-Simons term describing the charge-vortex coupling. The periodicity requires the existence of (Euclidean) topological excitations which determine the quantum phase structure of the model. The electric-magnetic duality leads to a quantum phase transition between a superconductor and a superinsulator at the self-dual point. We also discuss in this framework the recently proposed quantum Hall phases for charges and vortices in presence of external offset charges and magnetic fluxes: we show how the periodicity of the charge-vortex coupling can lead to transitions to anyon superconductivity phases. We finally generalize our results to three dimensions, where the relevant gauge theory is the so-called BF system, with an antisymmetric Kalb-Ramond gauge field.

M. C. Diamantini; P. Sodano; C. A. Trugenberger

1995-11-23T23:59:59.000Z

396

Topological Response Theory of Doped Topological Insulators  

Science Journals Connector (OSTI)

We generalize the topological response theory of three-dimensional topological insulators (TI) to metallic systems—specifically, doped TI with finite bulk carrier density and a time-reversal symmetry breaking field near the surface. We show that there is an inhomogeneity-induced Berry phase contribution to the surface Hall conductivity that is completely determined by the occupied states and is independent of other details such as band dispersion and impurities. In the limit of zero bulk carrier density, this intrinsic surface Hall conductivity reduces to the half-integer quantized surface Hall conductivity of TI. Based on our theory we predict the behavior of the surface Hall conductivity for a doped topological insulator with a top gate, which can be directly compared with experiments.

Maissam Barkeshli and Xiao-Liang Qi

2011-11-07T23:59:59.000Z

397

Derivation of Quantum Theory from Feynman's Rules  

E-Print Network (OSTI)

Feynman's formulation of quantum theory is remarkable in its combination of formal simplicity and computational power. However, as a formulation of the abstract structure of quantum theory, it is incomplete as it does not account for most of the fundamental mathematical structure of the standard von Neumann-Dirac formalism such as the unitary evolution of quantum states. In this paper, we show how to reconstruct the entirety of the finite-dimensional quantum formalism starting from Feynman's rules with the aid of a single new physical postulate, the no-disturbance postulate. This postulate states that a particular class of measurements have no effect on the outcome probabilities of subsequent measurements performed. We also show how it is possible to derive both the amplitude rule for composite systems of distinguishable subsystems and Dirac's amplitude-action rule, each from a single elementary and natural assumption, by making use of the fact that these assumptions must be consistent with Feynman's rules.

Philip Goyal

2014-03-14T23:59:59.000Z

398

Theory, modeling and simulation: Annual report 1993  

SciTech Connect

Developing the knowledge base needed to address the environmental restoration issues of the US Department of Energy requires a fundamental understanding of molecules and their interactions in insolation and in liquids, on surfaces, and at interfaces. To meet these needs, the PNL has established the Environmental and Molecular Sciences Laboratory (EMSL) and will soon begin construction of a new, collaborative research facility devoted to advancing the understanding of environmental molecular science. Research in the Theory, Modeling, and Simulation program (TMS), which is one of seven research directorates in the EMSL, will play a critical role in understanding molecular processes important in restoring DOE`s research, development and production sites, including understanding the migration and reactions of contaminants in soils and groundwater, the development of separation process for isolation of pollutants, the development of improved materials for waste storage, understanding the enzymatic reactions involved in the biodegradation of contaminants, and understanding the interaction of hazardous chemicals with living organisms. The research objectives of the TMS program are to apply available techniques to study fundamental molecular processes involved in natural and contaminated systems; to extend current techniques to treat molecular systems of future importance and to develop techniques for addressing problems that are computationally intractable at present; to apply molecular modeling techniques to simulate molecular processes occurring in the multispecies, multiphase systems characteristic of natural and polluted environments; and to extend current molecular modeling techniques to treat complex molecular systems and to improve the reliability and accuracy of such simulations. The program contains three research activities: Molecular Theory/Modeling, Solid State Theory, and Biomolecular Modeling/Simulation. Extended abstracts are presented for 89 studies.

Dunning, T.H. Jr.; Garrett, B.C.

1994-07-01T23:59:59.000Z

399

No Drama Quantum Theory? A Review  

E-Print Network (OSTI)

Schr\\"{o}dinger (Nature, v.169, 538 (1952)) noted that the complex matter field in the Klein-Gordon equation can be made real by a gauge transform, although charged fields are believed to require complex functions. Surprisingly, the result can be extended to the Dirac equation: three complex components of the Dirac spinor function can be algebraically eliminated, and the remaining component can be made real by a gauge transform. Therefore, the Dirac equation is generally equivalent to one fourth-order partial differential equation for one real function (A. Akhmeteli, J. Math. Phys. v.52, 082303 (2011)). These results both belong in textbooks and can be used for development of new efficient methods of quantum chemistry. The matter field can be algebraically eliminated both in scalar electrodynamics and in spinor electrodynamics in a certain gauge. The resulting equations describe independent dynamics of the electromagnetic field, which permits mathematical simplification and can be useful for interpretation of quantum theory. For example, in the Bohm interpretation, the electromagnetic field can replace the wave function as the guiding field. It is also shown that for these equations, generalized Carleman embedding generates systems of linear equations in the Hilbert space, which look like second-quantized theories and are equivalent to the original nonlinear systems on the set of solutions of the latter. Thus, the relevant local realistic models can be embedded into quantum field theories. These models are equivalent to scalar electrodynamics and spinor electrodynamics, so they correctly describe a large body of experimental data. Although they may need some modifications for better agreement with experiments, they may be of great interest as "no drama quantum theories", as simple (in principle) as classical electrodynamics. Possible issues with the Bell theorem are discussed.

A. Akhmeteli

2011-11-20T23:59:59.000Z

400

Nonprevalence of biochemical fossils in kerogen from pre-Phanerozoic sediments  

Science Journals Connector (OSTI)

...Chemi- cal Data Systems) in...with 10-sec heat pulses successively...before complete combustion, so that any...Systems, such as hydrocarbon, leads to ethylene...Table 1 for other data on samples...Table 1 for other data on samples...pyroly- zable to hydrocarbons, and no large...

Joel Leventhal; Stephen E. Suess; Preston Cloud

1975-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

Bogoliubov theory and bosonic atoms  

E-Print Network (OSTI)

We formulate the Bogoliubov variational principle in a mathematical framework similar to the generalized Hartree-Fock theory. Then we analyze the Bogoliubov theory for bosonic atoms in details. We discuss heuristically why the Bogoliubov energy should give the first correction to the leading energy of large bosonic atoms.

Phan Thanh Nam

2011-09-13T23:59:59.000Z

402

Quantum Probability from Decision Theory?  

E-Print Network (OSTI)

Deutsch has recently (in quant-ph/9906015) offered a justification, based only on the non-probabilistic axioms of quantum theory and of classical decision theory, for the use of the standard quantum probability rules. In this note, this justification is examined.

J. Finkelstein

1999-07-01T23:59:59.000Z

403

Dynamical Theory of K Mesons  

Science Journals Connector (OSTI)

Considerations leading to a complete dynamical theory of K particles and hyperons are outlined. The theory exploits several points of analogy between the ? field and the electromagnetic field, and gives a qualitatively satisfactory description of a number of phenomena. In particular, it accounts for the variety of K-particle decay modes, including those exhibiting opposite parity.

Julian Schwinger

1956-11-15T23:59:59.000Z

404

Quantum Electrodynamical Density-Functional Theory: Bridging Quantum Optics and Electronic-Structure Theory  

E-Print Network (OSTI)

In this work we give a comprehensive derivation of an exact and numerically feasible method to perform ab-initio calculations of quantum particles interacting with a quantized electromagnetic field. We present a hierachy of density-functional-type theories that describe the interaction of charged particles with photons and introduce the appropriate Kohn-Sham schemes. We show how the evolution of a system described by quantum electrodynamics in Coulomb gauge is uniquely determined by its initial state and two reduced quantities. These two fundamental observables, the polarization of the Dirac field and the vector potential of the photon field, can be calculated by solving two coupled, non-linear evolution equations without the need to explicitly determine the (numerically infeasible) many-body wave function of the coupled quantum system. To find reliable approximations to the implicit functionals we present the according Kohn-Sham construction. In the non-relativistic limit this density-functional-type theory ...

Ruggenthaler, Michael; Pellegrini, Camilla; Appel, Heiko; Tokatly, Ilya V; Rubio, Angel

2014-01-01T23:59:59.000Z

405

Geometric scalar theory of gravity  

SciTech Connect

We present a geometric scalar theory of gravity. Our proposal will be described using the ''background field method'' introduced by Gupta, Feynman, Deser and others as a field theory formulation of general relativity. We analyze previous criticisms against scalar gravity and show how the present proposal avoids these difficulties. This concerns not only the theoretical complaints but also those related to observations. In particular, we show that the widespread belief of the conjecture that the source of scalar gravity must be the trace of the energy-momentum tensor — which is one of the main difficulties to couple gravity with electromagnetic phenomenon in previous models — does not apply to our geometric scalar theory. From the very beginning this is not a special relativistic scalar gravity. The adjective ''geometric'' pinpoints its similarity with general relativity: this is a metric theory of gravity. Some consequences of this new scalar theory are explored.

Novello, M.; Bittencourt, E.; Goulart, E.; Salim, J.M.; Toniato, J.D. [Instituto de Cosmologia Relatividade Astrofisica ICRA - CBPF Rua Dr. Xavier Sigaud 150 - 22290-180 Rio de Janeiro - Brazil (Brazil); Moschella, U., E-mail: novello@cbpf.br, E-mail: eduhsb@cbpf.br, E-mail: Ugo.Moschella@uninsubria.it, E-mail: egoulart@cbpf.br, E-mail: jsalim@cbpf.br, E-mail: toniato@cbpf.br [Università degli Studi dell'Insubria - Dipartamento di Fisica e Matematica Via Valleggio 11 - 22100 Como - Italy (Italy)

2013-06-01T23:59:59.000Z

406

Pretreatment Endorectal Coil Magnetic Resonance Imaging Findings Predict Biochemical Tumor Control in Prostate Cancer Patients Treated With Combination Brachytherapy and External-Beam Radiotherapy  

SciTech Connect

Purpose: To investigate the utility of endorectal coil magenetic resonance imaging (eMRI) in predicting biochemical relapse in prostate cancer patients treated with combination brachytherapy and external-beam radiotherapy. Methods and Materials: Between 2000 and 2008, 279 men with intermediate- or high-risk prostate cancer underwent eMRI of their prostate before receiving brachytherapy and supplemental intensity-modulated radiotherapy. Endorectal coil MRI was performed before treatment and retrospectively reviewed by two radiologists experienced in genitourinary MRI. Image-based variables, including tumor diameter, location, number of sextants involved, and the presence of extracapsular extension (ECE), were incorporated with other established clinical variables to predict biochemical control outcomes. The median follow-up was 49 months (range, 1-13 years). Results: The 5-year biochemical relapse-free survival for the cohort was 92%. Clinical findings predicting recurrence on univariate analysis included Gleason score (hazard ratio [HR] 3.6, p = 0.001), PSA (HR 1.04, p = 0.005), and National Comprehensive Cancer Network risk group (HR 4.1, p = 0.002). Clinical T stage and the use of androgen deprivation therapy were not correlated with biochemical failure. Imaging findings on univariate analysis associated with relapse included ECE on MRI (HR 3.79, p = 0.003), tumor size (HR 2.58, p = 0.04), and T stage (HR 1.71, p = 0.004). On multivariate analysis incorporating both clinical and imaging findings, only ECE on MRI and Gleason score were independent predictors of recurrence. Conclusions: Pretreatment eMRI findings predict for biochemical recurrence in intermediate- and high-risk prostate cancer patients treated with combination brachytherapy and external-beam radiotherapy. Gleason score and the presence of ECE on MRI were the only significant predictors of biochemical relapse in this group of patients.

Riaz, Nadeem [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States)] [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States); Afaq, Asim; Akin, Oguz [Department of Radiology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States)] [Department of Radiology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States); Pei Xin; Kollmeier, Marisa A.; Cox, Brett [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States)] [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States); Hricak, Hedvig [Department of Radiology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States)] [Department of Radiology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States); Zelefsky, Michael J., E-mail: zelefskm@mskcc.org [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States)

2012-11-01T23:59:59.000Z

407

Theory of Coulomb drag in graphene  

Science Journals Connector (OSTI)

We study the Coulomb drag between two single graphene sheets in intrinsic and extrinsic graphene systems with no interlayer tunneling. The general expression for the nonlinear susceptibility appropriate for single-layer graphene systems is derived using the diagrammatic perturbation theory, and the corresponding exact zero-temperature expression is obtained analytically. We find that, despite the existence of a nonzero conductivity in an intrinsic graphene layer, the Coulomb drag between intrinsic graphene layers vanishes at all temperatures. In extrinsic systems, we obtain numerical results and an approximate analytical result for the drag resistivity ?D, and find that ?D goes as T2 at low temperature T, as 1?d4 for large layer separation d, and 1?n3 for high carrier density n. We also discuss qualitatively the effect of plasmon-induced enhancement on the Coulomb drag, which should occur at a temperature of the order of or higher than the Fermi temperature.

Wang-Kong Tse; Ben Yu-Kuang Hu; S. Das Sarma

2007-08-06T23:59:59.000Z

408

Probability: Theory and examples  

E-Print Network (OSTI)

Some times the lights are shining on me. Other times I can barely see. Lately it occurs to me what a long strange trip its been. Grateful Dead In 1989 when the first edition of the book was completed, my sons David and Greg were 3 and 1, and the cover picture showed the Dow Jones at 2650. The last twenty years have brought many changes but the song remains the same. The title of the book indicates that as we develop the theory, we will focus our attention on examples. Hoping that the book would be a useful reference for people who apply probability in their work, we have tried to emphasize the results that are important for applications, and illustrated their use with roughly 200 examples. Probability is not a spectator sport, so the book contains almost 450 exercises to challenge the reader and to deepen their understanding. The fourth edition has two major changes (in addition to a new publisher): (i) The book has been converted from TeX to LaTeX. The systematic use of labels should eventually eliminate problems with references to other points in the text. In

Rick Durrett

2011-01-01T23:59:59.000Z

409

N=2 gauge theories and degenerate fields of Toda theory  

SciTech Connect

We discuss the correspondence between degenerate fields of the W{sub N} algebra and punctures of Gaiotto's description of the Seiberg-Witten curve of N=2 superconformal gauge theories. Namely, we find that the type of degenerate fields of the W{sub N} algebra, with null states at level one, is classified by Young diagrams with N boxes, and that the singular behavior of the Seiberg-Witten curve near the puncture agrees with that of W{sub N} generators. We also find how to translate mass parameters of the gauge theory to the momenta of the Toda theory.

Kanno, Shoichi; Matsuo, Yutaka; Shiba, Shotaro [Department of Physics, Faculty of Science, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan); Tachikawa, Yuji [School of Natural Sciences, Institute for Advanced Study, Princeton, New Jersey 08540 (United States)

2010-02-15T23:59:59.000Z

410

Effective field theory for dilute fermions with pairing  

SciTech Connect

Effective field theory (EFT) methods for a uniform system of fermions with short-range, natural interactions are extended to include pairing correlations, as part of a program to develop a systematic Kohn-Sham density functional theory (DFT) for medium and heavy nuclei. An effective action formalism for local composite operators leads to a free-energy functional that includes pairing by applying an inversion method order by order in the EFT expansion. A consistent renormalization scheme is demonstrated for the uniform system through next-to-leading order, which includes induced-interaction corrections to pairing.

Furnstahl, R.J. [Department of Physics, Ohio State University, Columbus, OH 43210 (United States)], E-mail: furnstahl.1@osu.edu; Hammer, H.-W. [Helmholtz-Institut fuer Strahlen- und Kernphysik (Theorie), Universitaet Bonn, Nussallee 14-16, D-53115 Bonn (Germany)], E-mail: hammer@itkp.uni-bonn.de; Puglia, S.J. [SBIG PLC, Berkeley Square House, London W1J 6BR (United Kingdom)], E-mail: spuglia@sbiguk.com

2007-11-15T23:59:59.000Z

411

Auxiliary potential dependence of the Brueckner-Bethe-Goldstone theory  

Science Journals Connector (OSTI)

It is observed that unlike the versions which rely on auxiliary potentials designed to cancel diagrams exactly, the continuous version of the Brueckner-Bethe-Goldstone theory can be used to calculate the properties and in particular the ground state energy of repulsive many body systems. The only proviso amounts to a trivial requirement on the effective mass at the Fermi momentum. These results are related to those concerning the predictions of the corresponding versions of Green's function theory for the analytical properties of the mass operator. The case of attractive many body systems is also considered.

R. Sartor

1984-12-01T23:59:59.000Z

412

Introduction to Q-tensor theory  

E-Print Network (OSTI)

This paper aims to provide an introduction to a basic form of the ${\\bf Q}$-tensor approach to modelling liquid crystals, which has seen increased interest in recent years. The increase in interest in this type of modelling approach has been driven by investigations into the fundamental nature of defects and new applications of liquid crystals such as bistable displays and colloidal systems for which a description of defects and disorder is essential. The work in this paper is not new research, rather it is an introductory guide for anyone wishing to model a system using such a theory. A more complete mathematical description of this theory, including a description of flow effects, can be found in numerous sources but the books by Virga and Sonnet and Virga are recommended. More information can be obtained from the plethora of papers using such approaches, although a general introduction for the novice is lacking. The first few sections of this paper will detail the development of the ${\\bf Q}$-tensor approach for nematic liquid crystalline systems and construct the free energy and governing equations for the mesoscopic dependent variables. A number of device surface treatments are considered and theoretical boundary conditions are specified for each instance. Finally, an example of a real device is demonstrated.

Nigel J. Mottram; Christopher J. P. Newton

2014-09-11T23:59:59.000Z

413

in: "Density Functional Theory", edited by R.F. Nalewajski, Topics in Current Chemistry, Vol. 181, p. 81  

E-Print Network (OSTI)

in: "Density Functional Theory", edited by R.F. Nalewajski, Topics in Current Chemistry, Vol. 181, p. 81 Springer­Verlag Berlin Heidelberg 1996 Density functional theory of time­dependent phenomena E of density functional theory (DFT) is to describe an interacting many­particle system exclusively

Gross, E.K.U.

414

in: "Density Functional Theory", edited by R.F. Nalewajski, Topics in Current Chemistry, Vol. 181, p. 81  

E-Print Network (OSTI)

in: "Density Functional Theory", edited by R.F. Nalewajski, Topics in Current Chemistry, Vol. 181, p. 81 Springer-Verlag Berlin Heidelberg 1996 Density functional theory of time-dependent phenomena E of density functional theory (DFT) is to describe an interacting many-particle system exclusively

Gross, E.K.U.

415

Electronic Structure: Density Functional Theory S. Kurth, M.A.L. Marques, and E. K. U. Gross  

E-Print Network (OSTI)

Electronic Structure: Density Functional Theory S. Kurth, M.A.L. Marques, and E. K. U. Gross: July 5, 2003) PACS numbers: 71.15.Mb, 31.15.Ew 1 #12; I. INTRODUCTION Density functional theory (DFT systems becomes prohibitive. A di#erent approach is taken in density functional theory where, instead

Gross, E.K.U.

416

Particle vibrational coupling in covariant density functional theory  

E-Print Network (OSTI)

A consistent combination of covariant density functional theory (CDFT) and Landau-Migdal Theory of Finite Fermi Systems (TFFS) is presented. Both methods are in principle exact, but Landau-Migdal theory cannot describe ground state properties and density functional theory does not take into account the energy dependence of the self-energy and therefore fails to yield proper single-% particle spectra as well as the coupling to complex configurations in the width of giant resonances. Starting from an energy functional, phonons and their vertices are calculated without any further parameters. They form the basis of particle-vibrational coupling leading to an energy dependence of the self-energy and an induced energy-dependent interaction in the response equation. A subtraction procedure avoids double counting. Applications in doubly magic nuclei and in a chain of superfluid nuclei show excellent agreement with experimental data.

P. Ring; E. Litvinova

2010-06-21T23:59:59.000Z

417

Compact boson stars in K field theories  

E-Print Network (OSTI)

We study a scalar field theory with a non-standard kinetic term minimally coupled to gravity. We establish the existence of compact boson stars, that is, static solutions with compact support of the full system with self-gravitation taken into account. Concretely, there exist two types of solutions, namely compact balls on the one hand, and compact shells on the other hand. The compact balls have a naked singularity at the center. The inner boundary of the compact shells is singular, as well, but it is, at the same time, a Killing horizon. These singular, compact shells therefore resemble black holes.

C. Adam; N. Grandi; P. Klimas; J. Sanchez-Guillen; A. Wereszczynski

2009-09-16T23:59:59.000Z

418

Compact boson stars in K field theories  

E-Print Network (OSTI)

We study a scalar field theory with a non-standard kinetic term minimally coupled to gravity. We establish the existence of compact boson stars, that is, static solutions with compact support of the full system with self-gravitation taken into account. Concretely, there exist two types of solutions, namely compact balls on the one hand, and compact shells on the other hand. The compact balls have a naked singularity at the center. The inner boundary of the compact shells is singular, as well, but it is, at the same time, a Killing horizon. These singular, compact shells therefore resemble black holes.

Adam, C; Klimas, P; Sánchez-Guillén, J; Wereszczynski, A

2009-01-01T23:59:59.000Z

419

Energy and Momentum Density in Field Theory  

Science Journals Connector (OSTI)

It is shown that the energy density commutator condition in its simplest form is valid for interacting spin 0, ½, 1 field systems, but not for higher spin fields. The action principle is extended, for this purpose, to arbitrary coordinate frames. There is a discussion of four categories of fields and some explicit consideration of spin 32 as the simplest example that gives additional terms in the energy density commutator. As the fundamental equation of relativistic quantum field theory, the commutator condition makes explicit the greater physical complexity of higher spin fields.

Julian Schwinger

1963-04-15T23:59:59.000Z

420

Decision Theory under Complex Uncertainty Durham 15 May 2008  

E-Print Network (OSTI)

Decision Theory under Complex Uncertainty Durham 15 May 2008 Decision Theory under Complex #12;Decision Theory under Complex Uncertainty Durham 15 May 2008 Decision Theory under Complex Robert Hable University of Bayreuth #12;Decision Theory under Complex Uncertainty Decision Theory

Hable, Robert

Note: This page contains sample records for the topic "biochemical systems theory" 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

Momentum dissipation and effective theories of coherent and incoherent transport  

E-Print Network (OSTI)

We study heat transport in two systems without momentum conservation: a hydrodynamic system, and a holographic system with spatially dependent, massless scalar fields. When momentum dissipates slowly, there is a well-defined, coherent collective excitation in the AC heat conductivity, and a crossover between sound-like and diffusive transport at small and large distance scales. When momentum dissipates quickly, there is no such excitation in the incoherent AC heat conductivity, and diffusion dominates at all distance scales. For a critical value of the momentum dissipation rate, we compute exact expressions for the Green's functions of our holographic system due to an emergent gravitational self-duality, similar to electric/magnetic duality, and SL(2,R) symmetries. We extend the coherent/incoherent classification to examples of charge transport in other holographic systems: probe brane theories and neutral theories with non-Maxwell actions.

Richard A. Davison; Blaise Goutéraux

2015-01-21T23:59:59.000Z

422

The Brueckner Theory of Nuclear Structure  

Science Journals Connector (OSTI)

8 May 1956 research-article The Brueckner Theory of Nuclear Structure R. J. Eden The object of the Brueckner theory is to calculate the properties...insufficient. Previous papers on the Brueckner theory have used a formalism applicable...

1956-01-01T23:59:59.000Z

423

Decision Theory Models of Information and Consideration  

E-Print Network (OSTI)

with states of mind. Theory and Decision, 53:1–26, 2007a. N.sequential rationality. Theory and Decision, 62 (2):119–134,for paired comparison. Theory and Decision, 52(1):29–71,

Lleras, Juan Sebastian

2011-01-01T23:59:59.000Z

424

SMITH THEORY FOR ALGEBRAIC VARIETIES PETER SYMONDS  

E-Print Network (OSTI)

SMITH THEORY FOR ALGEBRAIC VARIETIES PETER SYMONDS Abstract.We show how an approach to Smith Theory about group actions on * *CW. 1.Introduction Peter May described in [8] a version of Smith Theory based on Bredon cohomolo

Symonds, Peter

425

Condensed Matter Theory Center Wednesday, May 18  

E-Print Network (OSTI)

Condensed Matter Theory Center Seminar Wednesday, May 18 11am-12pm 2205 Physics Building Zhengcheng condensed matter physics is based on two theories: symmetry breaking theory for phases and phase transitions

Lathrop, Daniel P.

426

Phenomenological theories of ferroelectric phase transitions  

E-Print Network (OSTI)

Phenomenological theories of ferroelectric phase transitions W. Cao parameter in the free energy expansion, phenomenological theory can also describe inhomogeneous structures appear-Phenomenological parent and product phases. phenomenological theories in multidimensions for describ-Phenomenological

Cao, Wenwu

427

Understanding conformal field theory through parafermions and Chern Simons theory  

SciTech Connect

Conformal field theories comprise a vast class of exactly solvable two dimensional quantum field theories. Conformal theories with an enlarged symmetry group, the current algebra symmetry, axe a key ingredient to possible string compactification models. The following work explores a Lagrangian approach to these theories. In the first part of this thesis, a large class of conformal theories, the so-called coset models, are derived semi-classically from a gauged version Of the Wess-Zumino-Witten functional. A non-local field transformation to the parafermionic field description is employed in the quantization procedure. Classically, these parafermionic fields satisfy non-trivial Poisson brackets, providing insight into the fractional spin nature of the conformal theory. The W-algebra symmetry is shown to appear naturally in this approach. In the second part of this thesis, the connection between the fusion algebra structure of Wess-Zumino-Witten models and the quantization of the Chern-Simons action on the torus is made explicit. The modular properties of the conformal model are also derived in this context, giving a natural demonstration of the Verlinde conjecture. The effects of background gauge fields and monopoles are also discussed.

Hotes, S.A.

1992-11-19T23:59:59.000Z

428

Theory Seminar Schedule  

NLE Websites -- All DOE Office Websites (Extended Search)

1-2002 1-2002 30 July 2002 Josef Speth -- Forschungszentrum Juelich j.speth@fz-juelich.de From Nuclear Physics to the Stock Market 23 May 2002 Peter Cabauy -- University of Michigan and Argonne National Lab cabauy@phy.anl.gov Quantum Computing and Cyclic Networks of Quantum Gates 15 May 2002 Andreas Nogga -- University of Arizona anogga@physics.arizona.edu Bound states of the 4N and 3N-hyperon systems 30 April 2002 Prashanth Jaikumar -- SUNY, Stony Brook jaikumar@tonic.physics.sunysb.edu Aspects of High Density QCD and Neutron Star Cooling 4 April 2002 Charles J. Horowitz -- Indiana University at Bloomington charlie@niobe.iucf.indiana.edu Parity Violating Measurements of Neutron Densities: Implications for Neutron Stars 26 March 2002 Andreas Krassnigg -- Institut fuer Theoretische Physik, Karl-Franzens-Universitaet Graz, Austria andreas.krassnigg@kfunigraz.ac.at A Relativistic Point-Form Approach to Quark-Antiquark Systems

429

Understanding Structural Stability of Pharmaceutically Relevant Macromolecular Complexes: A Biophysical and Biochemical Approach  

E-Print Network (OSTI)

of the structure and stability of proteins to environmental perturbations. In the case of more complex macromolecular systems (e.g., multi-domain fusion proteins, large recombinant proteins, and viruses), however, the measured stability is presumably the sum of all...

Esfandiary, Reza

2009-08-10T23:59:59.000Z

430

Computer-Aided Process Engineering Center Department of Chemical and Biochemical Engineering  

E-Print Network (OSTI)

in offshore oil & gas industries (Gürkan Sin) Data mining techniques for process monitoring & operation Liquids (Jens Abildskov) Gas Solubility in Complex Liquids (Jens Abildskov) Biocatalysis (Jens Abildskov) Diabatic Distillation (Jens Abildskov/Jakob Kjøbsted Huusom) Modelling and control of a 4-tank system

Mosegaard, Klaus

431

DEPARTMENT OF BIOCHEMICAL ENGINEERING AND BIOTECHNOLOGY INDIAN INSTITUTE OF TECHNOLOGY DELHI  

E-Print Network (OSTI)

collection with sampling vials should be provided. 17. SS condenser for exhaust gas outlet (SS-316L) should be supplied with one pH probe. The pH control range should be from 3 - 12, links to acid pump or CO2 gas. Automatic and manual gas mixing options with control via solenoid valves should be available. 13. The system

Kumar, M. Jagadesh

432

Nonprevalence of biochemical fossils in kerogen from pre-Phanerozoic sediments  

Science Journals Connector (OSTI)

...pyrolyzed in helium with 10-sec heat pulses successively at 250...furnace just before complete combustion, so that any adsorbed water...Simpler Systems, such as hydrocarbon, leads to ethylene and methane...kerogen pyroly- zable to hydrocarbons, and no large molecules...

Joel Leventhal; Stephen E. Suess; Preston Cloud

1975-01-01T23:59:59.000Z

433

Biochemical markers of intelligence: a proton MR spectroscopy study of normal human brain  

Science Journals Connector (OSTI)

...is a sensitive new tool to assess the neuronal...is a sensitive new tool to assess the neuronal...is a sensitive new tool to assess the neuronal...of psychological assessment and neuroimaging...software (GE Medical Systems, Waukesha, WI...acquisition mode (STEAM) pulse sequence...

1999-01-01T23:59:59.000Z

434

Theory of Leakage Preventing Layer  

Science Journals Connector (OSTI)

It is a brand new concept for leakage prevention layer. The practice to place HEPA filter at the terminal is improved when the theory of leakage prevention layer applies, which becomes the core of novel air distr...

Zhonglin Xu

2014-01-01T23:59:59.000Z

435

Informative sensing : theory and applications  

E-Print Network (OSTI)

Compressed sensing is a recent theory for the sampling and reconstruction of sparse signals. Sparse signals only occupy a tiny fraction of the entire signal space and thus have a small amount of information, relative to ...

Chang, Hyun Sung

2012-01-01T23:59:59.000Z

436

Bringing Identity Theory into Leisure  

E-Print Network (OSTI)

Despite a substantial volume of research on identity in the social and behavioral sciences, identity theory has existed on the margins of the leisure literature and contributed to the understanding of leisure behavior only in occasional illustrative...

Jun, Jinhee

2010-01-14T23:59:59.000Z

437

Gauge theory webs and surfaces  

E-Print Network (OSTI)

We analyze the perturbative cusp and closed polygons of Wilson lines for massless gauge theories in coordinate space, and express them as exponentials of two-dimensional integrals. These integrals have geometric interpretations, which link renormalization scales with invariant distances.

Ozan Erdo?an; George Sterman

2015-01-29T23:59:59.000Z

438

Chiral Gauge Theory for Graphene  

E-Print Network (OSTI)

We construct a chiral gauge theory to describe fractionalization of fermions in graphene. Thereby we extend a recently proposed model, which relies on vortex formation. Our chiral gauge fields provide dynamics for the vortices and also couple to the fermions.

R. Jackiw; S. -Y. Pi

2007-01-30T23:59:59.000Z

439

Information Theory and Climate Prediction  

Science Journals Connector (OSTI)

This paper introduces the use of information theory in characterizing climate predictability. Specifically, the concepts of entropy and transinformation are employed. Entropy measures the amount of uncertainty in our knowledge of the state of the ...

Lai-Yung Leung; Gerald R. North

1990-01-01T23:59:59.000Z

440

Chiral Gauge Theory for Graphene  

Science Journals Connector (OSTI)

We construct a chiral gauge theory to describe fractionalization of fermions in graphene. Thereby we extend a recently proposed model, which relies on vortex formation. Our chiral gauge fields provide dynamics for the vortices and also couple to the fermions.

R. Jackiw and S.-Y. Pi

2007-06-26T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

The fundamental constants and theory  

Science Journals Connector (OSTI)

...1. Introduction The fundamental constants appear as parameters...least-squares adjustment of the fundamental constants (Mohr Taylor...are the following: How does theory enter into the CODATA evaluation of the fundamental constants? What are the...

2005-01-01T23:59:59.000Z

442

Inflationary Cosmology: Theory and Phenomenology  

E-Print Network (OSTI)

This article gives a brief overview of some of the theory behind the inflationary cosmology, and discusses prospects for constraining inflation using observations. Particular care is given to the question of falsifiability of inflation or of subsets of inflationary models.

Andrew R Liddle

2001-10-18T23:59:59.000Z

443

Segmental alternations and metrical theory  

E-Print Network (OSTI)

This dissertation focuses on phonological alternations that are influenced or constrained by word-internal prosody, i.e. prominence and foot structure, and what these alternations can tell us about metrical theory. Detailed ...

Vaysman, Olga

2009-01-01T23:59:59.000Z

444

The behavioral theory of contract  

E-Print Network (OSTI)

This work develops a theory of contract grounded in empirical analysis of individuals' experience with and interpretations of form-adhesive contracts. Form-adhesive contracts are unilaterally drafted, typically by ...

Eigen, Zev J. (Zev Jacob)

2009-01-01T23:59:59.000Z

445

Das Standard Modell als Theorie  

NLE Websites -- All DOE Office Websites (Extended Search)

as a Theory as a Theory Ungelöste Rätsel Das Standard Modell als Theorie Auch wenn das Standard Modell die im Experiment beobachteten Phänomene sehr gut beschreibt, so ist es dennoch eine unvollständige Theorie. Das Problem liegt darin, dass das Standard Modell nicht erklären kann, warum einige Teilchen gerade diejenigen Eigenschaften haben, die wir beobachten. Zum Beispiel, auch wenn den Physikern die Massen aller Quarks - mit Ausnahme derjenigen des top Quarks - seit Jahren bekannt waren, so war es dennoch nicht möglich die Masse des top Quarks ohne die Hilfe experimenteller Daten genau vorherzusagen. Das ist deshalb so, weil das Standard Modell keine Erklärung dafür geben kann, warum die Liste der Teilchenmassen gerade diese Zahlenwerte aufweist.

446

Thermoelectric Materials by Design, Computational Theory and...  

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

Design, Computational Theory and Structure Thermoelectric Materials by Design, Computational Theory and Structure 2009 DOE Hydrogen Program and Vehicle Technologies Program Annual...

447

Thermoelectric Materials by Design: Computational Theory and...  

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

Design: Computational Theory and Structure Thermoelectric Materials by Design: Computational Theory and Structure Presentation from the U.S. DOE Office of Vehicle Technologies...

448

Geometric Hamilton-Jacobi Field Theory  

E-Print Network (OSTI)

I briefly review my proposal about how to extend the geometric Hamilton-Jacobi theory to higher derivative field theories on fiber bundles.

Luca Vitagliano

2011-09-08T23:59:59.000Z

449

Chemistry: Theory - Combustion Energy Frontier Research Center  

NLE Websites -- All DOE Office Websites (Extended Search)

Theory Chemistry: Theory Presentations from 2010 CEFRC First Annual Conference MultireferenceCorrelated WavefunctionCalculations and Reaction Flux Analyses of Methyl Ester...

450

$n$-plectic Maxwell Theory  

E-Print Network (OSTI)

This note provides a detailed treatment of the Multisymplectic Maxwell theory through the general setting developed in [24] [26] [27]. In particular we explore the DeDonder-Weyl theory, the question of algebraic and dynamical observable forms, the copolarization process related to the good search of canonical forms. Finally, we give - for the two dimensional case - some indications for the construction of the higher Lepage-Dedecker correspondence, in the context of the underlying Grassmannian viewpoint.

Dimitri Vey

2014-06-06T23:59:59.000Z

451

Information theory and climate prediction  

E-Print Network (OSTI)

INFORMATION THEORY AND CLIMATE PREDICTION A Thesis by LAI-YUNG LEUNG Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 1988 Major Subject...: Meteorology INFORMATION THEORY AND CLIMATE PREDICTION A Thesis by LAI-YUNG LEUNG Approved as to style and content by: Gerald R. North (Chairman) George L. Huebner (Member) Robert O. Reid (Member) James R. Scoggins (Head of Department) May 19BB...

Leung, Lai-yung

1988-01-01T23:59:59.000Z

452

The development, advantages, challenges, and potential of a compact OLEDbased platform for photoluminescencebased sensing of (bio)chemical analytes will be  

E-Print Network (OSTI)

for photoluminescencebased sensing of (bio)chemical analytes will be presented. In this platform, the excitation source Graduate Seminar Organic Electronics­Based Chemical & Biological Sensing Platform: Advances & ChallengesThe development, advantages, challenges, and potential of a compact OLEDbased platform

Farritor, Shane

453

YourAuthorPDFforBiochemicalSocietyTransactions We are pleased to provide a copy of the Version of Record of your article. This PDF is  

E-Print Network (OSTI)

@portlandpress.com. #12;IntrinsicallyDisorderedProteins Intrinsically Disordered Proteins A Biochemical Society Focused, U.K.) and Mike Williamson (Sheffield, U.K.). Intrinsically disordered proteins: administration, University of York, Heslington, York YO10 5DD, U.K. Abstract IDPs (intrinsically disordered proteins

Williamson, Mike P.

454

Optimal control theory with arbitrary superpositions of waveforms  

E-Print Network (OSTI)

Standard optimal control methods perform optimization in the time domain. However, many experimental settings demand the expression of the control signal as a superposition of given waveforms. Since this type of constraint is not time-local, Optimal Control Theory cannot be used without modifications. Simplex methods, used as a substitute in this case, tend to be less efficient and less reliable than Optimal Control Theory. In this paper, we present an extension to Optimal Control Theory which allows gradient-based optimization for superpositions of arbitrary waveforms. Its key is the use of the Moore-Penrose pseudoinverse as an efficient means of transforming from a time-local to a waveform-based description. To illustrate this optimization technique, we study the parametrically driven harmonic oscillator as model system and reduce its energy, considering both Hamiltonian dynamics and open-system dynamics. We demonstrate the viability and efficiency of the method for these test cases.

Selina Meister; Jürgen T. Stockburger; Rebecca Schmidt; Joachim Ankerhold

2014-08-27T23:59:59.000Z

455

Ultrametric Fewnomial Theory  

E-Print Network (OSTI)

. Khovanskii?s results imply that a square system of n real polynomial equations in n variables with total t terms has at most (n+1)t2t(t?1)/2 non-degenerate roots in the positive orthant. Khovanskii?s bound was improved by the work of F. Bihan and F. Sottile.... For more details see [12], [15], [17] and [21]. 1. What Are the p-adic Numbers? Let Q denote the set of rational numbers, we can construct a norm on Q in the following way: Let p be a prime number, and for any integer a ? Z, define the p-adic valuation of a...

Ibrahim Abdelhalim, Ashraf

2011-02-22T23:59:59.000Z

456

Molecular Cluster Perturbation Theory. I. Formalism  

E-Print Network (OSTI)

We present second-order molecular cluster perturbation theory (MCPT(2)), a methodology to calculate arbitrarily large systems with explicit calculation of individual wavefunctions in a coupled-cluster framework. This new MCPT(2) framework uses coupled-cluster perturbation theory and an expansion in terms of molecular dimer interactions to obtain molecular wavefunctions that are infinite-order in both the electronic fluctuation operator and all possible dimer (and products of dimers) interactions. The MCPT(2) framework has been implemented in the new SIA/ACES parallel architecture, making use of the advanced dynamic memory control and fine grained parallelism to perform very large explicit molecular cluster calculations. To illustrate the power of this method, we have computed energy shifts and lattice site dipole moments via explicit calculation of the bulk system for the polar and non-polar configurations of solid hydrogen fluoride. The explicit lattice size without periodic boundary conditions was expanded up to 1,000 HF molecules, with 32,000 basis functions and 10,000 electrons. Our obtained HF lattice site dipole moments of 2.51 and 2.49 Debye (for the polar and non-polar configurations, respectively) are in good agreement with the existing literature values of 2.51 and 2.47.

Jason N. Byrd; Nakul Jindal; Robert W. Molt, Jr.; Rodney J. Bartlett; Beverly A. Sanders; Victor F. Lotrich

2014-09-06T23:59:59.000Z

457

Sheldon Glashow, the Electroweak Theory, and the Grand Unified Theory  

Office of Scientific and Technical Information (OSTI)

Sheldon Glashow and the Electroweak Theory Sheldon Glashow and the Electroweak Theory Resources with Additional Information Sheldon Glashow Courtesy AIP Emilio Segrè Visual Archives, Segrè Collection [Sheldon] 'Glashow shared the 1979 Nobel Prize for physics with Steven Weinberg and Abdus Salam for unifying the theories of weak and electromagnetic forces. The new "electroweak" theory underlies all of particle physics and provides a framework for understanding how the early universe evolved and how the chemical elements were created. ... "Glashow's work has been instrumental in our understanding of how our universe came into being," says Lawrence R. Sulak, chairman of the Boston University physics department. "In the years since winning the prize, Glashow has helped develop the Grand Unified Theory of all particles and all forces. Its predictions led to the construction of massive underground detectors, the refinement of the unification models, the first observation of neutrinos from a supernova, and the recent discovery that neutrinos have mass. Glashow has fueled an ongoing search for rare events and exotic effects that may shed further light on the evolution of the early universe."1

458

A theory for one dimensional asynchronous chemical wave  

E-Print Network (OSTI)

We present a theory for experimentally observed phenomenon of one dimensional asynchronous waves. The general principle of coexistence of linear and nonlinear solutions of a dynamical system is underlying the present theoretical work. The result has been proposed analytically and numerical simulations are produced in support of the analytical results.

A. Bhattacharyay

2005-10-28T23:59:59.000Z

459

General Relativity and Lorentz-Invariant Theories of Gravitations  

Science Journals Connector (OSTI)

... until the present day. The three well-known Einstein tests are all obtained from the Schwarzschild metric, that is the general relativity solution of the one-body problem. There has ... Whitehead's theory are formally identical with the corresponding equations in general relativity if the Schwarzschild metric is represented in a suitable co-ordinate system. Later this suggestion led Schild ...

G. J. WHITROW; G. E. MORDUCH

1960-12-03T23:59:59.000Z

460

Liquid pair correlations in four spatial dimensions: Theory versus simulation  

E-Print Network (OSTI)

Using liquid integral equation theory, we calculate the pair correlations of particles that interact via a smooth repulsive pair potential in d = 4 spatial dimensions. We discuss the performance of different closures for the Ornstein-Zernike equation, by comparing the results to computer simulation data. Our results are of relevance to understand crystal and glass formation in high-dimensional systems.

M. Heinen; J. Horbach; H. Löwen

2014-11-06T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

The effects of fermions on lattice gauge theories with scalars  

SciTech Connect

The effects of fermions on the gauge-Higgs systems are investigated in the context of an SU(2) lattice gauge theory with scalar and fermion fields. The results from analytic studies and numerical simulations, with quenched and dynamical fermions, are presented. Some physical implications are discussed. 19 refs., 8 figs.

Lee, I-Hsiu

1988-01-01T23:59:59.000Z

462

Hamilton-Jacobi theory and the evolution operator  

E-Print Network (OSTI)

We present a new setting of the geometric Hamilton-Jacobi theory by using the so-called time-evolution operator K. This new approach unifies both the Lagrangian and the Hamiltonian formulation of the problem developed in a previous paper [7], and can be applied to the case of singular Lagrangian dynamical systems.

J. F. Carinena; X. Gracia; E. Martinez; G. Marmo; M. C. Munoz-Lecanda; N. Roman-Roy

2009-07-06T23:59:59.000Z

463

Density Functional Theory-Based Database Development and CALPHAD Automation  

E-Print Network (OSTI)

Density Functional Theory-Based Database Development and CALPHAD Automation YI WANG,1,2 SHUNLI, the integration of first-principles calculations, CALPHAD modeling, and the automation of phase diagram, and the automated calculation of a phase diagram for the Al- Mg system. INTRODUCTION In thermodynamics, a phase

Chen, Long-Qing

464

Communication: Random phase approximation renormalized many-body perturbation theory  

SciTech Connect

We derive a renormalized many-body perturbation theory (MBPT) starting from the random phase approximation (RPA). This RPA-renormalized perturbation theory extends the scope of single-reference MBPT methods to small-gap systems without significantly increasing the computational cost. The leading correction to RPA, termed the approximate exchange kernel (AXK), substantially improves upon RPA atomization energies and ionization potentials without affecting other properties such as barrier heights where RPA is already accurate. Thus, AXK is more balanced than second-order screened exchange [A. Grüneis et al., J. Chem. Phys. 131, 154115 (2009)], which tends to overcorrect RPA for systems with stronger static correlation. Similarly, AXK avoids the divergence of second-order Møller-Plesset (MP2) theory for small gap systems and delivers a much more consistent performance than MP2 across the periodic table at comparable cost. RPA+AXK thus is an accurate, non-empirical, and robust tool to assess and improve semi-local density functional theory for a wide range of systems previously inaccessible to first-principles electronic structure calculations.

Bates, Jefferson E.; Furche, Filipp, E-mail: filipp.furche@uci.edu [Department of Chemistry, University of California, Irvine, 1102 Natural Sciences II, Irvine, California 92697-2025 (United States)] [Department of Chemistry, University of California, Irvine, 1102 Natural Sciences II, Irvine, California 92697-2025 (United States)

2013-11-07T23:59:59.000Z

465

Subsystem real-time Time Dependent Density Functional Theory  

E-Print Network (OSTI)

We present the extension of Frozen Density Embedding (FDE) theory to real-time Time Dependent Density Functional Theory (rt-TDDFT). FDE a is DFT-in-DFT embedding method that allows to partition a larger Kohn-Sham system into a set of smaller, coupled Kohn-Sham systems. Additional to the computational advantage, FDE provides physical insight into the properties of embedded systems and the coupling interactions between them. The extension to rt-TDDFT is done straightforwardly by evolving the Kohn-Sham subsystems in time simultaneously, while updating the embedding potential between the systems at every time step. Two main applications are presented: the explicit excitation energy transfer in real time between subsystems is demonstrated for the case of the Na$_4$ cluster and the effect of the embedding on optical spectra of coupled chromophores. In particular, the importance of including the full dynamic response in the embedding potential is demonstrated.

Krishtal, Alisa; Pavanello, Michele

2015-01-01T23:59:59.000Z

466

Research on Methane-Electricity-Heatpump System Model in Cold Area  

Science Journals Connector (OSTI)

The heat energy loss of methane liquid is the most important reason for low temperature of methane biochemical reaction in cold area by energy-flow analysis. The heat energy recovery of methane liquid can build a self-energizing system. Vegetable greenhouses ... Keywords: cold area, self-energizing, methane, heat pump, model

Zhang Chenghu; Pan Yawen; Ma Fang; Sun Dexing; Qiu Shan

2011-01-01T23:59:59.000Z

467

Theory Seminar Schedule  

NLE Websites -- All DOE Office Websites (Extended Search)

seminars held in the year 2002-2003 seminars held in the year 2002-2003 29 May 2003 Mihai Horoi Central Michigan University horoi@phy.cmich.edu No Core Shell Model Calculations of s- and p-Shell Nuclei with the Low Momentum Interaction 17 April 2003 Shannon Cowell University of Illinois cowell@students.uiuc.edu Quenching of Weak Interactions in Nucleon Matter 10 April 2003 Declan Mulhall Cal Poly, San Louis Obispo dmulhall@calpoly.edu Random interactions, order and symmetry in a simple many-fermion system 27 March 2003 Boris Kopeliovich Max-Planck-Institute High-pT Pions at RHIC: Where does the Supression Come From? 18 March 2003 Sarmistha Banik Saha Institute of Nuclear Physics, Kolkata, India Neutron Stars: Dense Matter Laboratories 13 March 2003 Nicole Bell Fermilab nfb@fnal.gov

468

Theory Seminar Schedule  

NLE Websites -- All DOE Office Websites (Extended Search)

5-2006 5-2006 Click on a title to read an abstract, if available (underlined). 30 May 2006 Special Day: Tuesday Dean J. Lee North Carolina State University djlee3@unity.ncsu.edu A new type of superfluid 25 May 2006 José Goity Hampton University & Jefferson Lab goity@jlab.org The 1/Nc Expansion in Baryons 23 May 2006 Special Day and Time: Tuesday, 10:30am Bogdan Mihaila Los Alamos National Laboratory bmihaila@lanl.gov Solving the effective interaction puzzle in ultracold fermionic atom gases April 27th 2006 Robin Santra Argonne National Laboratory (CHM) rsantra@anl.gov Calculating resonances using a complex absorbing potential 3 April 2006 Special Day and Time: Monday, 10:30am Huang Fei Institute for High Energy Physics, Beijing hfbin@mail.ihep.ac.cn Resonating group method study of baryon-meson systems in a chiral quark model

469

Subsidiary Conditions in Covariant Theories  

Science Journals Connector (OSTI)

We have investigated the effect that coordinate conditions and similar conditions will have on the formal properties of covariant theories. Two distinct types of coordinate conditions were included, those involving first derivatives of the field variables (such as the gauge condition of Lorentz and the coordinate conditions of De Donder) and those algebraic in the field variables (of which the Coulomb gauge is an example).We have found that with either type of coordinate condition we can construct a variational principle, or a Hamiltonian formalism, which leads to physically meaningful field equations if associated with appropriate initial conditions on a space-like hypersurface. Thus the existence of a properly set Cauchy problem is always assured.It had been found previously that the infinitesimal invariant transformations of covariant theories form a group and that the coordinate (and similar) transformations represent a normal subgroup. The members of the resulting factor group are in one-to-one correspondence with the true observables of the theory, those dynamical variables which alone possess intrinsic significance without reference to a particular frame of description and whose commutator algebra is presumably reflected in the commutators of the corresponding Hilbert operators of the quantized theory. In this paper we have established the appropriate transformation groups (and their subgroups and factor groups) of a theory with either type of coordinate conditions. We have found that in any of these versions the theory will yield the same observables with the same commutator algebra. One may therefore hope that a quantization scheme based on a theory with subsidiary conditions will be free of the arbitrariness involved in the choice of particular conditions.

Peter G. Bergmann and Allen I. Janis

1958-08-15T23:59:59.000Z

470

Structural and Biochemical Characterization of the Hemophore (HasAp) From Pseudomonas Aeruginosa  

E-Print Network (OSTI)

= 5/2) hexacoordinate; (B) high-spin (S = 5/2) pentacoordinate and (C) low-spin (S = ?) heme complexes. Adapted from [10, 59] ????????????????... 97 Figure 18. 13 C NMR spectra of HasAp, pH 7.0, reconstituted with (A) heme labeled at the C...-membrane receptors in an energy-dependent process which allows the delivery of the iron to the bacteria via a TonB-dependent pathway [10, 15]. P. aeruginosa can also sequester iron from heme containing proteins by employing two heme-uptake systems, namely phu...

Alontaga, Aileen Yung

2008-07-23T23:59:59.000Z

471

Jacek Dobaczewski Density functional theory and energy  

E-Print Network (OSTI)

Jacek Dobaczewski Density functional theory and energy density functionals in nuclear physics Jacek Functional #12;Jacek Dobaczewski Mean-Field Theory Density Functional Theory · mean-field one? Density Functional Theory: A variational method that uses observables as variational parameters. #12;Jacek

Dobaczewski, Jacek

472

Density functional theory George F. Bertsch  

E-Print Network (OSTI)

Density functional theory George F. Bertsch #3; Institute for Nuclear Theory and Department of Physics University of Tsukuba Tsukuba 305-8577 Japan Abstract Density functional theory is a remarkably Time-dependent density functional theory: the equations 34 A Optical properties

Bertsch George F.

473

Statistical Decision Theory: Concepts, Methods and Applications  

E-Print Network (OSTI)

Statistical Decision Theory: Concepts, Methods and Applications (Special topics in Probabilistic Mazumder 950116380 #12;Part I: Decision Theory ­ Concepts and Methods 1 Part I: DECISION THEORY - Concepts and Methods Decision theory as the name would imply is concerned with the process of making decisions

Rosenthal, Jeffrey S.

474

3D N = 4 Gauge Theory Compactication  

E-Print Network (OSTI)

Outline 3D N = 4 Gauge Theory Compactication Twistors 3D N = 4 Supersymmetric Gauge Theories and Hyperk¨ahler Metrics Richard Eager UCSB Friday, October 17th, 2008, 4:00 p.m. Richard Eager UCSB 3D N = 4 Supersymmetric Gauge Theories and Hyperk¨ahler M #12;Outline 3D N = 4 Gauge Theory Compactication Twistors

Bigelow, Stephen

475

Sleeve reaction chamber system  

DOE Patents (OSTI)

A chemical reaction chamber system that combines devices such as doped polysilicon for heating, bulk silicon for convective cooling, and thermoelectric (TE) coolers to augment the heating and cooling rates of the reaction chamber or chambers. In addition the system includes non-silicon-based reaction chambers such as any high thermal conductivity material used in combination with a thermoelectric cooling mechanism (i.e., Peltier device). The heat contained in the thermally conductive part of the system can be used/reused to heat the device, thereby conserving energy and expediting the heating/cooling rates. The system combines a micromachined silicon reaction chamber, for example, with an additional module/device for augmented heating/cooling using the Peltier effect. This additional module is particularly useful in extreme environments (very hot or extremely cold) where augmented heating/cooling would be useful to speed up the thermal cycling rates. The chemical reaction chamber system has various applications for synthesis or processing of organic, inorganic, or biochemical reactions, including the polymerase chain reaction (PCR) and/or other DNA reactions, such as the ligase chain reaction.

Northrup, M. Allen (Berkeley, CA); Beeman, Barton V. (San Mateo, CA); Benett, William J. (Livermore, CA); Hadley, Dean R. (Manteca, CA); Landre, Phoebe (Livermore, CA); Lehew, Stacy L. (Livermore, CA); Krulevitch, Peter A. (Pleasanton, CA)

2009-08-25T23:59:59.000Z

476

Free Energy of ABJM Theory  

E-Print Network (OSTI)

The free energy of ABJM theory has previously been computed in the strong and weak coupling limits. In this note, we report on results for the computation of the first non-vanishing quantum correction to the free energy, from the field theory side. The correction can be expressed in terms of a thermal mass for the scalar fields. This mass vanishes to 1-loop order, but there is a non-vanishing result to 2-loop order. Hence, the leading correction to the free energy is non-analytic in the 't Hooft coupling constant lambda. The reason is that the infrared divergences necessitate a resummation of ring diagrams and a related reorganization of perturbation theory, in which already the leading correction receives contributions from all orders in lambda. These results suggest that the free energy interpolates smoothly between weak and strong coupling.

Mikael Smedbäck

2011-03-24T23:59:59.000Z

477

Economic feasibility of biochemical processes for the upgrading of crudes and the removal of sulfur, nitrogen, and trace metals from crude oil -- Benchmark cost establishment of biochemical processes on the basis of conventional downstream technologies. Final report FY95  

SciTech Connect

During the past several years, a considerable amount of work has been carried out showing that microbially enhanced oil recovery (MEOR) is promising and the resulting biotechnology may be deliverable. At Brookhaven National Laboratory (BNL), systematic studies have been conducted which dealt with the effects of thermophilic and thermoadapted bacteria on the chemical and physical properties of selected types of crude oils at elevated temperatures and pressures. Current studies indicate that during the biotreatment several chemical and physical properties of crude oils are affected. The oils are (1) emulsified; (2) acidified; (3) there is a qualitative and quantitative change in light and heavy fractions of the crudes; (4) there are chemical changes in fractions containing sulfur compounds; (5) there is an apparent reduction in the concentration of trace metals; and (6) the qualitative and quantitative changes appear to be microbial species dependent; and (7) there is a distinction between biodegraded and biotreated oils. The downstream biotechnological crude oil processing research performed thus far is of laboratory scale and has focused on demonstrating the technical feasibility of downstream processing with different types of biocatalysts under a variety of processing conditions. Quantitative economic analysis is the topic of the present project which investigates the economic feasibility of the various biochemical downstream processes which hold promise in upgrading of heavy crudes, such as those found in California, e.g., Monterey-type, Midway Sunset, Honda crudes, and others.

Premuzic, E.T.

1996-08-01T23:59:59.000Z

478

A Classical Density-Functional Theory for Describing Water Interfaces  

E-Print Network (OSTI)

We develop a classical density functional for water which combines the White Bear fundamental-measure theory (FMT) functional for the hard sphere fluid with attractive interactions based on the Statistical Associating Fluid Theory (SAFT-VR). This functional reproduces the properties of water at both long and short length scales over a wide range of temperatures, and is computationally efficient, comparable to the cost of FMT itself. We demonstrate our functional by applying it to systems composed of two hard rods, four hard rods arranged in a square and hard spheres in water.

Jessica Hughes; Eric Krebs; David Roundy

2012-08-31T23:59:59.000Z

479

Stochastic quantization of real-time thermal field theory  

SciTech Connect

We use the stochastic quantization method to obtain the free scalar propagator of a finite temperature field theory formulated in the Minkowski space-time. First, we use the Markovian stochastic quantization approach to present the two-point function of the theory. Second, we assume a Langevin equation with a memory kernel and a colored noise. The convergence of the Markovian and non-Markovian stochastic processes in the asymptotic limit of the fictitious time is obtained. Our formalism can be the starting point to discuss systems at finite temperature out of equilibrium.

Aguiar, T. C. de; Svaiter, N. F. [Centro Brasileiro de Pesquisas Fisicas (CBPF), Rua Dr. Xavier Sigaud 150, Rio de Janeiro 22290-180, Rio de Janeiro (Brazil); Menezes, G. [Instituto de Fisica Teorica, Universidade Estadual Paulista, Rua Dr. Bento Teobaldo Ferraz 271, Bloco II, Barra Funda, Sao Paulo 01140-070, Sao Paulo (Brazil)

2010-10-15T23:59:59.000Z

480

Dual-Process Theory and Signal-Detection Theory of Recognition Memory John T. Wixted  

E-Print Network (OSTI)

-detection theory. A dual-process version of signal-detection theory implies that individual recognition decisions. One view--the dual-process theory of recognition memory--holds that recogni- tion decisions are basedDual-Process Theory and Signal-Detection Theory of Recognition Memory John T. Wixted University

Wixted, John T.

Note: This page contains sample records for the topic "biochemical systems theory" 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

Quantum Theory and Spacelike Measurements  

E-Print Network (OSTI)

Experimentally observed violations of Bell inequalities rule out local realistic theories. Consequently, the quantum state vector becomes a strong candidate for providing an objective picture of reality. However, such an ontological view of quantum theory faces difficulties when spacelike measurements on entangled states have to be described, because time ordering of spacelike events can change under Lorentz-Poincar\\'e transformations. In the present paper it is shown that a necessary condition for consistency is to require state vector reduction on the backward light-cone. A fresh approach to the quantum measurement problem appears feasible within such a framework.

Bernd A. Berg

1998-01-04T23:59:59.000Z

482

Introduction to Measurement with Theory  

E-Print Network (OSTI)

industry level for the benchmark year, 1997. Then EU KLEMS database was then used to extrapolate this benchmark through time from 1970 to 2005. This was done at a detailed industry level. Modern 15 production theory using the user cost of capital... to TFP growth in the usual ratio approach to index number theory.25 For example, the owner of an oil exploration company will generally be interested in knowing how much of the difference between current period profits over the previous period profits...

Barnett, William A.; Diewert, W. Erwin; Zellner, Arnold

2009-09-01T23:59:59.000Z

483

Fuzzy decision support system for spread mooring system selection  

Science Journals Connector (OSTI)

Spread mooring systems are associated with high level uncertainties and risks during tanker loading/unloading operations. In addition, the design of such complex systems consists of many subjective and imprecise parameters. Therefore, in the present ... Keywords: AHP, Decision making, Fuzzy multiple attribute decision making, Fuzzy set theory, Spread mooring system, TOPSIS

Ayhan Mentes; Ismail Hakki Helvacioglu

2012-02-01T23:59:59.000Z

484

Physically Based Rendering, Second Edition: From Theory To Implementation, 2nd edition  

Science Journals Connector (OSTI)

Physically Based Rendering, 2nd Edition describes both the mathematical theory behind a modern photorealistic rendering system as well as its practical implementation. A method - known as 'literate programming'- combines human-readable documentation ...

Matt Pharr; Greg Humphreys

2010-07-01T23:59:59.000Z

485

Condensed Matter Theory Center Seminar Tuesday, October 28 at 11:00 AM  

E-Print Network (OSTI)

Condensed Matter Theory Center Seminar Tuesday, October 28 at 11:00 AM 2205 Physics Building bosons neither condense (and become a superfluid) nor localize (and insulate) at T=0. The system

Lathrop, Daniel P.

486

Projection and Reaction for Decision Support in Refineries: Combining Multiple Theories  

E-Print Network (OSTI)

system to provide decision support for refinery operations personnel (Krebsbach & Musliner 1997; Musliner) used to optimize control parameters during normal operations. Current Refinery Operations HumanProjection and Reaction for Decision Support in Refineries: Combining Multiple Theories Kurt D

Krebsbach, Kurt D.

487

Modified Brans-Dicke theory with space-time anisotropic parameters  

E-Print Network (OSTI)

We consider the ADM formalism of the Brans-Dicke theory and propose an anisotropic extension of the theory by introducing five free parameters. We find that the resulting theory reveals many interesting aspects which are not present in the original BD theory. We first discuss the ghost instability and strong coupling problems which are present in the gravity theory without the full diffeomorphism symmetry and show that they can be avoided in a region of the parameter space. We also perform the post-Newtonian approximation and show that the constraint of the Brans-Dicke parameter $\\omega_{{\\rm BD}}$ being large to be consistent with the solar system observations could be evaded in the extended theory. We also discuss that accelerating Universe can be achieved without the need of the potential for the Brans-Dicke scalar.

Taeyoon Moon; Phillial Oh

2014-02-22T23:59:59.000Z

488

Walk-through survey report: control technology for fermentation processes at Novo Biochemical Industries, Inc. , Franklinton, North Carolina  

SciTech Connect

A walkthrough survey of control technology for fermentation processes at Novo Biochemical Industries, Incorporated (SIC-2869), Franklinton, North Carolina was conducted in June, 1983. The company produced two industrial enzymes, alpha-amylase and amyl glucosidase, from microbial strains of Bacillus and Aspergillus. Engineering controls included enclosure of the production process and local exhaust ventilation of all bag dumping stations. Employee contact with the production process was minimal except for equipment maintenance and manual broth sample extraction. The majority of the large scale processes were computer controlled or monitored. All employees were required to maintain a clean work environment. The company used a computerized preventive-maintenance program. Routine industrial hygiene monitoring for active aerosilized liquid enzymes was conducted. The company had a relatively complete medical and biological monitoring program. Appropriate personal-protective equipment was required in all departments of the facility. The company employed a standardized procedure for entering a deep tank reactor vessel. The author concludes that the company employs state of the art technology and provides a work environment that minimizes potential exposure to microorganisms, process chemical intermediates, and biological products. An indepth survey of the facility is recommended.

Martinez, K.F.

1983-09-01T23:59:59.000Z

489

A perturbative approach for the study of compatibility between nonminimally coupled gravity and Solar System experiments  

E-Print Network (OSTI)

We develop a framework for constraining a certain class of theories of nonminimally coupled (NMC) gravity with Solar System observations.

Orfeu Bertolami; Riccardo March; Jorge Páramos

2014-03-18T23:59:59.000Z

490

Application of a modified generalized Flory dimer theory to normal alkanes  

SciTech Connect

The applicability of chain equations of state to real systems is discussed in this paper. For this purpose, the authors have compared four theories: the perturbed-hard-chain theory (PHCT) of Prausnitz and coworkers, the generalized Flory (GF) and generalized Flory dimer (GFD) theories of Hall and coworkers, and the statistical associating fluid theory (SAFT) of Radosz, Gubbins, and co-workers. In this comparison, the perturbation expansion in the attractive term was truncated after the first-order term for all theories. Comparison of these theories with Monte Carlo simulation data for hard chains and square-well chains showed that the GFD theory, which explicitly takes into account the effect of the formation of chains in both the repulsive and the attractive part of the equations, is in best agreement with the data. The GFD theory was further improved by using the simulations data directly to reevaluate the shape parameters c and q, which were found to be density dependent. The new simplified GFD theory gives a significantly better correlation of the properties of normal alkanes than the other four theories.

Bokis, C.P.; Donohue, M.D. (Johns Hopkins Univ., Baltimore, MD (United States). Dept. of Chemical Engineering); Hall, C.K. (North Carolina State Univ., Raleigh, NC (United States). Dept. of Chemical Engineering)

1994-05-01T23:59:59.000Z

491

A Foundation Theory of Quantum Mechanics  

E-Print Network (OSTI)

The nRules are empirical regularities that were discovered in macroscopic situations where the outcome is known. When they are projected theoretically into the microscopic domain they predict a novel ontology including the frequent collapse of an atomic wave function, thereby defining an nRule based foundation theory. Future experiments can potentially discriminate between this and other foundation theories of (non-relativistic) quantum mechanics. Important features of the nRules are: (1) they introduce probability through probability current rather than the Born rule, (2) they are valid independent of size (micro or macroscopic), (3) they apply to individual trials, not just to ensembles of trials. (4) they allow all observers to be continuously included in the system without ambiguity, (5) they account for the collapse of the wave function without introducing new or using old physical constants, and (6) in dense environments they provide a high frequency of stochastic localizations of quantum mechanical objects. Key words: measurement, stochastic choice, state reduction.

Richard A Mould

2006-07-10T23:59:59.000Z

492

Nonextensive lattice gauge theories: algorithms and methods  

E-Print Network (OSTI)

High-energy phenomena presenting strong dynamical correlations, long-range interactions and microscopic memory effects are well described by nonextensive versions of the canonical Boltzmann-Gibbs statistical mechanics. After a brief theoretical review, we introduce a class of generalized heat-bath algorithms that enable Monte Carlo lattice simulations of gauge fields on the nonextensive statistical ensemble of Tsallis. The algorithmic performance is evaluated as a function of the Tsallis parameter q in equilibrium and nonequilibrium setups. Then, we revisit short-time dynamic techniques, which in contrast to usual simulations in equilibrium present negligible finite-size effects and no critical slowing down. As an application, we investigate the short-time critical behaviour of the nonextensive hot Yang-Mills theory at q- values obtained from heavy-ion collision experiments. Our results imply that, when the equivalence of statistical ensembles is obeyed, the long-standing universality arguments relating gauge theories and spin systems hold also for the nonextensive framework.

Rafael B. Frigori

2014-04-26T23:59:59.000Z

493

Effective theory for deformed nuclei  

E-Print Network (OSTI)

Techniques from effective field theory are applied to nuclear rotation. This approach exploits the spontaneous breaking of rotational symmetry and the separation of scale between low-energy Nambu-Goldstone rotational modes and high-energy vibrational and nucleonic degrees of freedom. A power counting is established and the Hamiltonian is constructed at next-to-leading order.

T. Papenbrock

2010-11-23T23:59:59.000Z

494

Natural Philosophy and Quantum Theory  

E-Print Network (OSTI)

We attempt to show how relationalism might help in understanding Bell's theorem. We also present an analogy with Darwinian evolution in order to pedagogically hint at how one might go about using a theory in which one does not even desire to explain correlations by invoking common causes.

Thomas Marlow

2006-08-22T23:59:59.000Z

495

Quantum Field Theory in Graphene  

E-Print Network (OSTI)

This is a short non-technical introduction to applications of the Quantum Field Theory methods to graphene. We derive the Dirac model from the tight binding model and describe calculations of the polarization operator (conductivity). Later on, we use this quantity to describe the Quantum Hall Effect, light absorption by graphene, the Faraday effect, and the Casimir interaction.

I. V. Fialkovsky; D. V. Vassilevich

2011-11-13T23:59:59.000Z

496

A New Solar Theory1  

Science Journals Connector (OSTI)

... the numerous theories which have been propounded in explanation of the periodic changes of the solar phenomena no account has yet been taken of so important an element as the light ... light- and heat-absorbing envelope surrounding the photosphere. The attention which this so-called solar atmosphere has hitherto received, on the part even of our most eminent investigators, in ...

J. HALM

1902-02-13T23:59:59.000Z

497

Plasma theory and simulation research  

SciTech Connect

Our research group uses both theory and simulation as tools in order to increase the understanding of instabilities, heating, diffusion, transport and other phenomena in plasmas. We also work on the improvement of simulation, both theoretically and practically. Our focus has been more and more on the plasma edge (the sheath''), interactions with boundaries, leading to simulations of whole devices (someday a numerical tokamak).

Birdsall, C.K.

1989-01-01T23:59:59.000Z

498

Hamilton's theory of turns revisited  

E-Print Network (OSTI)

We present a new approach to Hamilton's theory of turns for the groups SO(3) and SU(2) which renders their properties, in particular their composition law, nearly trivial and immediately evident upon inspection. We show that the entire construction can be based on binary rotations rather than mirror reflections.

N. Mukunda; S. Chaturvedi; R. Simon

2009-04-30T23:59:59.000Z

499

Rough Set Theory: An Introduction  

Science Journals Connector (OSTI)

In rough set theory, knowledge is interpreted as an ability...a, 81b]). These objects form a set called often a universe of discourse and their nature may vary from case to case: they may be e.g. medical patients...

Prof. Dr. Lech Polkowski

2002-01-01T23:59:59.000Z

500

Magnetism and the Maxwellian Theory  

Science Journals Connector (OSTI)

... 31 that he is satisfied with my reply to his query concerning the place of magnetism in fundamental electrical theory. Of course there can be no question of “annihilating magnetic ... and properties of permanent magnets; but, as regards the understanding of fundamental physical phenomena, magnetism appears to have played a part similar to that of money in economics—a useful ...

C. V. DRYSDALE

1939-02-18T23:59:59.000Z