Systems Security at Chemical and Biochemical Engineering
and Biochemical Engineering. The Systems Administrator for Chemical and Biochemical Engineering regularly reviews network security.However, maintaining systems security is a group effort and a never-ending task. Here Administrator regarding security bugs that may affect your personal computer. If a patch is available, download
Mutual information in time-varying biochemical systems
Filipe Tostevin; Pieter Rein ten Wolde
2010-06-16T23:59:59.000Z
Cells must continuously sense and respond to time-varying environmental stimuli. These signals are transmitted and processed by biochemical signalling networks. However, the biochemical reactions making up these networks are intrinsically noisy, which limits the reliability of intracellular signalling. Here we use information theory to characterise the reliability of transmission of time-varying signals through elementary biochemical reactions in the presence of noise. We calculate the mutual information for both instantaneous measurements and trajectories of biochemical systems for a Gaussian model. Our results indicate that the same network can have radically different characteristics for the transmission of instantaneous signals and trajectories. For trajectories, the ability of a network to respond to changes in the input signal is determined by the timing of reaction events, and is independent of the correlation time of the output of the network. We also study how reliably signals on different time-scales can be transmitted by considering the frequency-dependent coherence and gain-to-noise ratio. We find that a detector that does not consume the ligand molecule upon detection can more reliably transmit slowly varying signals, while an absorbing detector can more reliably transmit rapidly varying signals. Furthermore, we find that while one reaction may more reliably transmit information than another when considered in isolation, when placed within a signalling cascade the relative performance of the two reactions can be reversed. This means that optimising signal transmission at a single level of a signalling cascade can reduce signalling performance for the cascade as a whole.
Final Technical Report "Multiscale Simulation Algorithms for Biochemical Systems"
Petzold, Linda R.
2012-10-25T23:59:59.000Z
Biochemical systems are inherently multiscale and stochastic. In microscopic systems formed by living cells, the small numbers of reactant molecules can result in dynamical behavior that is discrete and stochastic rather than continuous and deterministic. An analysis tool that respects these dynamical characteristics is the stochastic simulation algorithm (SSA, Gillespie, 1976), a numerical simulation procedure that is essentially exact for chemical systems that are spatially homogeneous or well stirred. Despite recent improvements, as a procedure that simulates every reaction event, the SSA is necessarily inefficient for most realistic problems. There are two main reasons for this, both arising from the multiscale nature of the underlying problem: (1) stiffness, i.e. the presence of multiple timescales, the fastest of which are stable; and (2) the need to include in the simulation both species that are present in relatively small quantities and should be modeled by a discrete stochastic process, and species that are present in larger quantities and are more efficiently modeled by a deterministic differential equation (or at some scale in between). This project has focused on the development of fast and adaptive algorithms, and the fun- damental theory upon which they must be based, for the multiscale simulation of biochemical systems. Areas addressed by this project include: (1) Theoretical and practical foundations for ac- celerated discrete stochastic simulation (tau-leaping); (2) Dealing with stiffness (fast reactions) in an efficient and well-justified manner in discrete stochastic simulation; (3) Development of adaptive multiscale algorithms for spatially homogeneous discrete stochastic simulation; (4) Development of high-performance SSA algorithms.
Fluctuation preserving coarse graining for biochemical systems
Altaner, Bernhard
2011-01-01T23:59:59.000Z
Finite stochastic Markov models play a major role for modelling biochemical pathways. Such models are a coarse-grained description of the underlying microscopic dynamics and can be considered mesoscopic. The level of coarse-graining is to a certain extend arbitrary since it depends on the resolution of accomodating measurements. Here, we present a way to simplify such stochastic descriptions, which preserves both the meso-micro and the meso-macro connection. The former is achieved by demanding locality, the latter by considering cycles on the network of states. Using single- and multicycle examples we demonstrate how our new method preserves fluctuations of observables much better than na\\"ive approaches.
Stochastic Control Analysis for Biochemical Reaction Systems
Kyung Hyuk Kim; Herbert M. Sauro
2009-08-21T23:59:59.000Z
In this paper, we investigate how stochastic reaction processes are affected by external perturbations. We describe an extension of the deterministic metabolic control analysis (MCA) to the stochastic regime. We introduce stochastic sensitivities for mean and covariance values of reactant concentrations and reaction fluxes and show that there exist MCA-like summation theorems among these sensitivities. The summation theorems for flux variances are shown to depend on the size of the measurement time window ($\\epsilon$), within which reaction events are counted for measuring a single flux. The degree of the $\\epsilon$-dependency can become significant for processes involving multi-time-scale dynamics and is estimated by introducing a new measure of time scale separation. This $\\epsilon$-dependency is shown to be closely related to the power-law scaling observed in flux fluctuations in various complex networks. We propose a systematic way to control fluctuations of reactant concentrations while minimizing changes in mean concentration levels. Such orthogonal control is obtained by introducing a control vector indicating the strength and direction of parameter perturbations leading to a sensitive control. We also propose a possible implication in the control of flux fluctuation: The control distribution for flux fluctuations changes with the measurement time window size, $\\epsilon$. When a control engineer applies a specific control operation on a reaction system, the system can respond contrary to what is expected, depending on the time window size $\\epsilon$.
Decomposing Noise in Biochemical Signaling Systems Highlights the Role of Protein Degradation
Miekisz, Jacek
Decomposing Noise in Biochemical Signaling Systems Highlights the Role of Protein Degradation Micha degradation on the overall variability for a range of molecular processes and signaling systems. With our are able to show how regulated protein degradation can be employed to reduce the noise in biochem- ical
Statistical mechanical theory for steady state systems. VII. Nonlinear theory
Attard, Phil
Statistical mechanical theory for steady state systems. VII. Nonlinear theory Phil Attard School May 2007; published online 2 July 2007 The second entropy theory for nonequilibrium thermodynamics explicitly as a type of the Green-Kubo equilibrium time correlation function. The theory is illustrated
Hierarchical graphs for better annotations of rule-based models of biochemical systems
Hu, Bin [Los Alamos National Laboratory; Hlavacek, William [Los Alamos National Laboratory
2009-01-01T23:59:59.000Z
In the graph-based formalism of the BioNetGen language (BNGL), graphs are used to represent molecules, with a colored vertex representing a component of a molecule, a vertex label representing the internal state of a component, and an edge representing a bond between components. Components of a molecule share the same color. Furthermore, graph-rewriting rules are used to represent molecular interactions, with a rule that specifies addition (removal) of an edge representing a class of association (dissociation) reactions and with a rule that specifies a change of vertex label representing a class of reactions that affect the internal state of a molecular component. A set of rules comprises a mathematical/computational model that can be used to determine, through various means, the system-level dynamics of molecular interactions in a biochemical system. Here, for purposes of model annotation, we propose an extension of BNGL that involves the use of hierarchical graphs to represent (1) relationships among components and subcomponents of molecules and (2) relationships among classes of reactions defined by rules. We illustrate how hierarchical graphs can be used to naturally document the structural organization of the functional components and subcomponents of two proteins: the protein tyrosine kinase Lck and the T cell receptor (TCR)/CD3 complex. Likewise, we illustrate how hierarchical graphs can be used to document the similarity of two related rules for kinase-catalyzed phosphorylation of a protein substrate. We also demonstrate how a hierarchical graph representing a protein can be encoded in an XML-based format.
A Credibility Theory for Automobile Bonus Systems
Maume-Deschamps, Véronique
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
5th Elgersburg School Mathematical Systems Theory
Knobloch,Jürgen
5th Elgersburg School Mathematical Systems Theory February 18-22, 2013 Control in Power Electronics George Weiss Infinite-Dimensional Systems Hans Zwart George Weiss is professor of Systems and Control En). In parallel, he has been active in control theory (in particular, internal model based control) applied
Advanced topics in control systems theory II
Nesic, Dragan
Advanced topics in control systems theory II Lecture notes from FAP 2005 Editors: Antonio Lor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 1.8.2 Inverted Pendulum.4 The desired energy function Hd with kv = 0. . . . . . . . . . . . . . . . . . 32 1.5 Closed-loop responses
Theory and Simulation of Multiphase Polymer Systems
Friederike Schmid
2010-01-08T23:59:59.000Z
The theory of multiphase polymer systems has a venerable tradition. The 'classical' theory of polymer demixing, the Flory-Huggins theory, was developed already in the forties of the last century. It is still the starting point for most current approaches -- be they improved theories for polymer (im)miscibility that take into account the microscopic structure of blends more accurately, or sophisticated field theories that allow to study inhomogeneous multicomponent systems of polymers with arbitrary architectures in arbitrary geometries. In contrast, simulations of multiphase polymer systems are relatively young. They are still limited by the fact that one must simulate a large number of large molecules in order to obtain meaningful results. Both powerful computers and smart modeling and simulation approaches are necessary to overcome this problem. This article gives an overview over the state-of-the art in both areas, theory and simulation. While the theory has reached a fairly mature stage by now, and many aspects of it are covered in textbooks on polymer physics, the information on simulations is much more scattered. This is why some effort has been invested into putting together a representative list of references in this area (up to the year of 2008) -- which is of course still far from complete.
Effective Field Theory and Finite Density Systems
R. J. Furnstahl; G. Rupak; T. Schaefer
2008-01-04T23:59:59.000Z
This review gives an overview of effective field theory (EFT) as applied at finite density, with a focus on nuclear many-body systems. Uniform systems with short-range interactions illustrate the ingredients and virtues of many-body EFT and then the varied frontiers of EFT for finite nuclei and nuclear matter are surveyed.
Solar System Constraints on Disformal Gravity Theories
Hiu Yan Ip; Jeremy Sakstein; Fabian Schmidt
2015-07-02T23:59:59.000Z
Disformal theories of gravity are scalar-tensor theories where the scalar couples derivatively to matter via the Jordan frame metric. These models have recently attracted interest in the cosmological context since they admit accelerating solutions. We derive the solution for a static isolated mass in generic disformal gravity theories and transform it into the parameterised post-Newtonian form. This allows us to investigate constraints placed on such theories by local tests of gravity. The tightest constraints come from preferred-frame effects due to the motion of the Solar System with respect to the evolving cosmological background field. The constraints we obtain improve upon the previous solar system constraints by two orders of magnitude, and constrain the scale of the disformal coupling for generic models to $\\mathcal{M} \\gtrsim 100$ eV. These constraints render all disformal effects irrelevant for cosmology.
Solar System Constraints on Disformal Gravity Theories
Ip, Hiu Yan; Schmidt, Fabian
2015-01-01T23:59:59.000Z
Disformal theories of gravity are scalar-tensor theories where the scalar couples derivatively to matter via the Jordan frame metric. These models have recently attracted interest in the cosmological context since they admit accelerating solutions. We derive the solution for a static isolated mass in generic disformal gravity theories and transform it into the parameterised post-Newtonian form. This allows us to investigate constraints placed on such theories by local tests of gravity. The tightest constraints come from preferred-frame effects due to the motion of the Solar System with respect to the evolving cosmological background field. The constraints we obtain improve upon the previous solar system constraints by two orders of magnitude, and constrain the scale of the disformal coupling for generic models to $\\mathcal{M} \\gtrsim 100$ eV. These constraints render all disformal effects irrelevant for cosmology.
Extended Hamiltonian systems in multisymplectic field theories
Echeverria-Enriquez, Arturo; Leon, Manuel de; Munoz-Lecanda, Miguel C.; Roman-Roy, Narciso [Departamento de Matematica Aplicada IV, Campus Norte UPC, Edificio C-3, C/Jordi Girona 1, E-08034 Barcelona (Spain); Instituto de Matematicas y Fisica Fundamental, CSIC, C/Serrano 123, E-28006 Madrid (Spain); Departamento de Matematica Aplicada IV, Campus Norte UPC, Edificio C-3, C/Jordi Girona 1, E-08034 Barcelona (Spain)
2007-11-15T23:59:59.000Z
We consider Hamiltonian systems in first-order multisymplectic field theories. We review the properties of Hamiltonian systems in the so-called restricted multimomentum bundle, including the variational principle which leads to the Hamiltonian field equations. In an analogous way to how these systems are defined in the so-called extended (symplectic) formulation of nonautonomous mechanics, we introduce Hamiltonian systems in the extended multimomentum bundle. The geometric properties of these systems are studied, the Hamiltonian equations are analyzed using integrable multivector fields, the corresponding variational principle is also stated, and the relation between the extended and the restricted Hamiltonian systems is established. All these properties are also adapted to certain kinds of submanifolds of the multimomentum bundles in order to cover the case of almost-regular field theories.
Preface for Mathematical Control Theory: Deterministic Finite Dimensional Systems
Sontag, Eduardo
with the symbol 3 . Control and system theory shares with some other areas of "modern" applied m* and results of mathematical control* * and system theory. Based on courses that I have taught during the last of control theory: The alge* *braic theory of linear systems, including controllability, observability
Open quantum systems and Random Matrix Theory
Declan Mulhall
2015-01-09T23:59:59.000Z
A simple model for open quantum systems is analyzed with Random Matrix Theory. The system is coupled to the continuum in a minimal way. In this paper we see the effect of opening the system on the level statistics, in particular the $\\Delta_3(L)$ statistic, width distribution and level spacing are examined as a function of the strength of this coupling. A super-radiant transition is observed, and it is seen that as it is formed, the level spacing and $\\Delta_3(L)$ statistic exhibit the signatures of missed levels.
A Gentle Introduction to Dynamical Systems Theory
Beer, Randall D.
A Gentle Introduction to Dynamical Systems Theory Reading: Chapter 1 #12;IU/COGS-Q580/Beer Isaac = -F2 = G m1m2 r2 #12;IU/COGS-Q580/Beer Henri Poincaré and His 3 Bodies Diacu, F. and Holmes, P. (1996 to almost all differential equations cannot be expressed as an explicit formula #12;IU/COGS-Q580/Beer
Scattering Theory for Open Quantum Systems
J. Behrndt; M. M. Malamud; H. Neidhardt
2006-10-31T23:59:59.000Z
Quantum systems which interact with their environment are often modeled by maximal dissipative operators or so-called Pseudo-Hamiltonians. In this paper the scattering theory for such open systems is considered. First it is assumed that a single maximal dissipative operator $A_D$ in a Hilbert space $\\sH$ is used to describe an open quantum system. In this case the minimal self-adjoint dilation $\\widetilde K$ of $A_D$ can be regarded as the Hamiltonian of a closed system which contains the open system $\\{A_D,\\sH\\}$, but since $\\widetilde K$ is necessarily not semibounded from below, this model is difficult to interpret from a physical point of view. In the second part of the paper an open quantum system is modeled with a family $\\{A(\\mu)\\}$ of maximal dissipative operators depending on energy $\\mu$, and it is shown that the open system can be embedded into a closed system where the Hamiltonian is semibounded. Surprisingly it turns out that the corresponding scattering matrix can be completely recovered from scattering matrices of single Pseudo-Hamiltonians as in the first part of the paper. The general results are applied to a class of Sturm-Liouville operators arising in dissipative and quantum transmitting Schr\\"{o}dinger-Poisson systems.
Systems of two heavy quarks with effective field theories
Nora Brambilla
2006-09-22T23:59:59.000Z
I discuss results and applications of QCD nonrelativistic effective field theories for systems with two heavy quarks.
Exterior Differential Systems for Field Theories
Estabrook, Frank B
2014-01-01T23:59:59.000Z
Cartan forms and Exterior Differential Systems, set in the state space of field and potential variables taken together with four space-time variables, are formulated for Maxwell, SU(2), SU(3) and SU(4) classical gauge theories minimally coupled to Dirac spinor multiplets. Their Cartan character tables are calculated, showing the EDS, and so the Euler-Lagrange partial differential equations, of the first of these to be well posed. That theory anticipates QED. In the other cases, only if the Dirac fields' conserved currents are suppressed as sources for the Yang-Mills fields is a well posed EDS found. PACS numbers: 02.30.Xx 02.40.Hw 03.50.De 03.50.-z
Exterior Differential Systems for Field Theories
Frank B. Estabrook
2015-02-24T23:59:59.000Z
Exterior Differential Systems (EDS) and Cartan forms, set in the state space of field variables taken together with four space-time variables, are formulated for classical gauge theories of Maxwell and SU(2) Yang-Mills fields minimally coupled to Dirac spinor multiplets. Cartan character tables are calculated, showing whether the EDS, and so the Euler-Lagrange partial differential equations, is well-posed. The first theory, with 22 dimensional state space (10 Maxwell field and potential components and 8 components of a Dirac field), anticipates QED. In the second, non-Abelian, case (30 Yang-Mills field components and 16 Dirac), only if three additional "ghost" fields are included (15 more scalar variables) is a well-posed EDS found. This classical formulation anticipates the need for introduction of Fadeev-Popov ghost fields in the quantum standard model.
On the Reliability of System Identification: Applications of Bootstrap Theory
Kareem, Ahsan
1 On the Reliability of System Identification: Applications of Bootstrap Theory T. Kijewski & A of Notre Dame, Notre Dame, IN, USA Keywords: bootstrapping, system identification, Monte Carlo, damping
Quantum field theory of relic nonequilibrium systems
Nicolas G. Underwood; Antony Valentini
2014-11-14T23:59:59.000Z
In terms of the de Broglie-Bohm pilot-wave formulation of quantum theory, we develop field-theoretical models of quantum nonequilibrium systems which could exist today as relics from the very early universe. We consider relic excited states generated by inflaton decay, as well as relic vacuum modes, for particle species that decoupled close to the Planck temperature. Simple estimates suggest that, at least in principle, quantum nonequilibrium could survive to the present day for some relic systems. The main focus of this paper is to describe the behaviour of such systems in terms of field theory, with the aim of understanding how relic quantum nonequilibrium might manifest experimentally. We show by explicit calculation that simple perturbative couplings will transfer quantum nonequilibrium from one field to another (for example from the inflaton field to its decay products). We also show that fields in a state of quantum nonequilibrium will generate anomalous spectra for standard energy measurements. Possible connections to current astrophysical observations are briefly addressed.
The Danger Theory and Its Application to Artificial Immune Systems
Somayaji, Anil
The Danger Theory and Its Application to Artificial Immune Systems Uwe Aickelin1 , Steve Cayzer.aickelin@bradford.ac.uk, Steve_Cayzer@hp.com artificial immune systems, danger theory Over the last decade, a new idea in the Artificial Immune Systems world. A number of potential application areas are then used to provide a framing
Biochemical transformation of coals
Lin, M.S.; Premuzic, E.T.
1999-03-23T23:59:59.000Z
A method of biochemically transforming macromolecular compounds found in solid carbonaceous materials, such as coal is provided. The preparation of new microorganisms, metabolically weaned through challenge growth processes to biochemically transform solid carbonaceous materials at extreme temperatures, pressures, pH, salt and toxic metal concentrations is also disclosed. 7 figs.
Upcoming Numerical Linear Algebra Issues in Systems and Control Theory
Upcoming Numerical Linear Algebra Issues in Systems and Control Theory Paul Van Dooren University in the interdisciplinary area of numerical linear algebra and systems and control theory. Although we do not claimto, and normalized coprime factorizations in robust control. Key words. Numerical algorithms, linear algebra, sparse
Upcoming Numerical Linear Algebra Issues in Systems and Control Theory
Upcoming Numerical Linear Algebra Issues in Systems and Control Theory Paul Van Dooren University in the interdisciplinary area of numerical linear algebra and systems and control theory. Although we do not claim, and normalized coprime factorizations in robust control. Key words. Numerical algorithms, linear algebra, sparse
The quantum systems control and the optimal control theory
V. F. Krotov
2008-05-22T23:59:59.000Z
Mathematical theory of the quantum systems control is based on some ideas of the optimal control theory. These ideas are developed here as applied to these systems. The results obtained meet the deficiencies in the basis and algorithms of the control synthesis and expand the application of these methods.
apoptotic biochemical signaling: Topics by E-print Network
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Signal Transduction Condensed Matter (arXiv) Summary: We realize a biochemical filtering process by introducing a buffer in a biocatalytic signal-transduction logic system based...
Transition state theory and dynamical corrections in ergodic systems
Van Den Eijnden, Eric
Transition state theory and dynamical corrections in ergodic systems Fabio A. Tal and Eric Vanden, New York University, New York, USA Abstract. The results of transition state theory are derived manifold. A new perspective on how to compute the dynamical corrections to the TST transition frequency
Bayesian Networks and Evidence Theory to Model Complex Systems Reliability
Paris-Sud XI, Université de
, infrastructure of water distribution or electricity. The reliability studies of such systems are consequentlyBayesian Networks and Evidence Theory to Model Complex Systems Reliability Ch. SIMON, Ph. WEBER, E.levrat}@cran.uhp-nancy.fr Abstract-- This paper deals with the use of Bayesian Net- works to compute system reliability of complex
Solar system constraints on alternative gravity theories
Sumanta Chakraborty; Soumitra Sengupta
2014-01-14T23:59:59.000Z
The perihelion precession of planetary orbits and the bending angle of null geodesics are estimated for different gravity theories in string-inspired models. It is shown that, for dilaton coupled gravity, the leading order measure in the angle of bending of light comes purely from vacuum expectation value of the dilaton field which may be interpreted as an indicator of a dominant stringy effect over the curvature effect. We arrive at similar results for spherically symmetric solution in quadratic gravity. We also present the perihelion shift and bending of light in the Einstein-Maxwell-Gauss-Bonnet theory with special reference to the Casimir effect and Damour-Polyakov mechanism. Numerical bounds to different coupling parameters in these models are estimated.
Open quantum systems and random matrix theory
Mulhall, Declan [Department of Physics/Engineering, University of Scranton, Scranton, Pennsylvania 18510-4642 (United States)
2014-10-15T23:59:59.000Z
A simple model for open quantum systems is analyzed with RMT. The system is coupled to the continuum in a minimal way. In this paper we see the effect of opening the system on the level statistics, in particular the level spacing, width distribution and ?{sub 3}(L) statistic are examined as a function of the strength of this coupling. The usual super-radiant state is observed, and it is seen that as it is formed, the level spacing and ?{sub 3}(L) statistic exhibit the signatures of missed levels.
A MACHINE LEARNING APPROACH TO BIOCHEMICAL REACTION RULES DISCOVERY
Paris-Sud XI, Université de
perspective and from the Systems Biology perspective. In this paper, we report on the machine learning systemA MACHINE LEARNING APPROACH TO BIOCHEMICAL REACTION RULES DISCOVERY Laurence Calzone, Nathalie to the design of new automated reasoning tools for biologists/modelers. The Biochemical Abstract machine BIOCHAM
Premuzic, E.T.; Lin, M.S.
1999-01-12T23:59:59.000Z
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, Eugene T. (East Moriches, NY); Lin, Mow S. (Rocky Point, NY)
1999-01-12T23:59:59.000Z
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 in organic sulfur, organic nitrogen and trace metals. Adapted microorganisms which have been modified under challenged growth processes are also disclosed.
Quantitative training system assessments using General Systems Performance Theory
Kashyap, Sujatha
2000-01-01T23:59:59.000Z
and gccurocyrs, No n'anted for each train ing system . 137 35 plot, of Speedrs, x?~?~-s y gccuracyr s, z?~?~:~s for each train- ing system . . 138 Plot of Per formance, ' " ""' values for each training system, for Gt 1-11 Plot of Performance... is the value added by each component in a CBT system, i. e. , how does a particular component or subsystem contribute to the overall performance of the system? A computer-based training system can have a wide variety of choices for each system component...
Boundary String Field Theory of the DDbar System
Kraus, P; Kraus, Per; Larsen, Finn
2001-01-01T23:59:59.000Z
We develop the boundary string field theory approach to tachyon condensation on the DDbar system. Particular attention is paid to the gauge fields, which combine with the tachyons in a natural way. We derive the RR-couplings of the system and express the result in terms of Quillen's superconnection. The result is related to an index theorem, and is thus shown to be exact.
Differentiating Between Modified Gravity Theories in the Solar System
Ali Mozaffari
2014-03-21T23:59:59.000Z
Building on previous work, we re-examine the possibility of testing MOdified Newtonian Dynamics near the saddle points of gravitational potentials in the Solar System, through an extension of the forthcoming LISA Pathfinder mission. We extend present analysis to include quasi-linear formulations of these theories, resulting from fully relativistic modified gravity theories. Using similar quantitative and qualitative tools, we demonstrate that in general, both the instrumental response and typical Signal to Noise Ratios for such a test will be different. Finally we investigate constraints from a negative result and parameterised free functions.
Tests of Modified Gravity Theories in the Solar System
Ali Mozaffari
2014-04-01T23:59:59.000Z
We review the case for testing preferred acceleration scale theories of gravity (sometimes falling under the guise of MOdified Newtonian Dynamics) in the Solar System using the forthcoming LISA Pathfinder (LPF) mission. Using a combination of analytical and numerical results, we suggest that different types of theory should be detectable using the predicted anomalous tidal stresses effects around the saddle points of the Newtonian gravitational field. The saddle point bubbles expected extent of $\\sim 400$ km are to be contrasted with potential miss parameters of $\\leq 10$ km, making such a test in easy reach of LPF. We also consider routes to constraining our theories from data, based on scenarios of both null and positive results.
E-Print Network 3.0 - adaptive systems theory Sample Search Results
Broader source: All U.S. Department of Energy (DOE) Office Webpages (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...
Thermal analysis of biochemical systems
McEuen, Scott Jacob
2013-01-01T23:59:59.000Z
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 ...
Complex geometric optics for symmetric hyperbolic systems I: linear theory
Omar Maj
2008-02-12T23:59:59.000Z
We obtain an asymptotic solution for $\\ep \\to 0$ of the Cauchy problem for linear first-order symmetric hyperbolic systems with oscillatory initial values written in the eikonal form of geometric optics with frequency $1/\\ep$, but with complex phases. For the most common linear wave propagation models, this kind on Cauchy problems are well-known in the applied literature and their asymptotic theory, referred to as complex geometric optics, is attracting interest for applications. In this work, which is the first of a series of papers dedicated to complex geometric optics for nonlinear symmetric hyperbolic systems, we develop a rigorous linear theory and set the basis for the subsequent nonlinear analysis.
Density Functional Resonance Theory of Unbound Electronic Systems
Daniel L. Whitenack; Adam Wasserman
2011-06-20T23:59:59.000Z
Density Functional Resonance Theory (DFRT) is a complex-scaled version of ground-state Density Functional Theory (DFT) that allows one to calculate the resonance energies and lifetimes of metastable anions. In this formalism, the exact energy and lifetime of the lowest-energy resonance of unbound systems is encoded into a complex "density" that can be obtained via complex-coordinate scaling. This complex density is used as the primary variable in a DFRT calculation just as the ground-state density would be used as the primary variable in DFT. As in DFT, there exists a mapping of the N-electron interacting system to a Kohn-Sham system of N non-interacting particles in DFRT. This mapping facilitates self consistent calculations with an initial guess for the complex density, as illustrated with an exactly-solvable model system. Whereas DFRT yields in principle the exact resonance energy and lifetime of the interacting system, we find that neglecting the complex-correlation contribution leads to errors of similar magnitude to those of standard scattering close-coupling calculations under the bound-state approximation.
Effective Holographic Theories for low-temperature condensed matter systems
C. Charmousis; B. Goutéraux; B. S. Kim; E. Kiritsis; Rene Meyer
2010-09-30T23:59:59.000Z
The IR dynamics of effective holographic theories capturing the interplay between charge density and the leading relevant scalar operator at strong coupling are analyzed. Such theories are parameterized by two real exponents $(\\gamma,\\delta)$ that control the IR dynamics. By studying the thermodynamics, spectra and conductivities of several classes of charged dilatonic black hole solutions that include the charge density back reaction fully, the landscape of such theories in view of condensed matter applications is characterized. Several regions of the $(\\gamma,\\delta)$ plane can be excluded as the extremal solutions have unacceptable singularities. The classical solutions have generically zero entropy at zero temperature, except when $\\gamma=\\delta$ where the entropy at extremality is finite. The general scaling of DC resistivity with temperature at low temperature, and AC conductivity at low frequency and temperature across the whole $(\\gamma,\\delta)$ plane, is found. There is a codimension-one region where the DC resistivity is linear in the temperature. For massive carriers, it is shown that when the scalar operator is not the dilaton, the DC resistivity scales as the heat capacity (and entropy) for planar (3d) systems. Regions are identified where the theory at finite density is a Mott-like insulator at T=0. We also find that at low enough temperatures the entropy due to the charge carriers is generically larger than at zero charge density.
Disformal Theories of Gravity: From the Solar System to Cosmology
Jeremy Sakstein
2014-10-20T23:59:59.000Z
This paper is concerned with theories of gravity that contain a scalar coupled both conformally and disformally to matter through the metric. By systematically deriving the non-relativistic limit, it is shown that no new non-linear screening mechanisms are present beyond the Vainshtein mechanism and chameleon-like screening. If one includes the cosmological expansion of the universe, disformal effects that are usually taken to be absent can be present in the solar system. When the conformal factor is absent, fifth-forces can be screened on all scales when the cosmological field is slowly-rolling. We investigate the cosmology of these models and use local tests of gravity to place new constraints on the disformal coupling and find $\\mathcal{M}>\\mathcal{O}(\\textrm{eV})$, which is not competitive with laboratory tests. Finally, we discuss the future prospects for testing these theories and the implications for other theories of modified gravity. In particular, the Vainshtein radius of solar system objects can be altered from the static prediction when cosmological time-derivatives are non-negligible.
Signal and System Theory II, BSc, Winter 2008 Automatic Control Laboratory D-ITET
Lygeros, John
Signal and System Theory II, BSc, Winter 2008 Automatic Control Laboratory D-ITET ETH Zurich Winter happens to the state as t using the final value theorem. 1 #12;Signal and System Theory II, BSc, Winter T seconds. Do you believe her? Justify your answer. 2 #12;Signal and System Theory II, BSc, Winter 2008
Quantum tomography meets dynamical systems and bifurcations theory
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
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.
Field Theory Techniques on Spin Systems Physics 230A, Spring 2007, Hitoshi Murayama
Murayama, Hitoshi
Field Theory Techniques on Spin Systems Physics 230A, Spring 2007, Hitoshi Murayama 1 Introduction to understand using the quantum field theory techniques. In order to use techniques in continuum field theory would like to do now is to rewrite this Hamiltonian in terms of continuum field theory. The first step
Transition State Theory for dissipative systems without a dividing surface
Revuelta, F; Benito, R M; Borondo, F
2015-01-01T23:59:59.000Z
Transition State Theory is a central cornerstone in reaction dynamics. Its key step is the identification of a dividing surface that is crossed only once by all reactive trajectories. This assumption is often badly violated, especially when the reactive system is coupled to an environment. The calculations made in this way then overestimate the reaction rate and the results depend critically on the choice of the dividing surface. In this Letter, we study the phase space of a stochastically driven system close to an energetic barrier in order to identify the geometric structure unambiguously determining the reactive trajectories, which is then incorporated in a simple rate formula for reactions in condensed phase that is both independent of the dividing surface and exact.
A General Systems Theory for Rain Formation in Warm Clouds
A. M. Selvam
2014-08-15T23:59:59.000Z
A cumulus cloud model which can explain the observed characteristics of warm rain formation in monsoon clouds is presented. The model is based on classical statistical physical concepts and satisfies the principle of maximum entropy production. Atmospheric flows exhibit selfsimilar fractal fluctuations that are ubiquitous to all dynamical systems in nature, such as physical, chemical, social, etc and are characterized by inverse power law form for power (eddy energy) spectrum signifying long-range space-time correlations. A general systems theory model for atmospheric flows developed by the author is based on the concept that the large eddy energy is the integrated mean of enclosed turbulent (small scale) eddies. This model gives scale-free universal governing equations for cloud growth processes. The model predicted cloud parameters are in agreement with reported observations, in particular, the cloud dropsize distribution. Rain formation can occur in warm clouds within 30minutes lifetime under favourable conditions of moisture supply in the environment.
THEORY OF DYNAMICAL SYSTEMS AND GENERAL TRANSFORMATION GROUPS WITH INVARIANT MEASURE
Katok, Svetlana
THEORY OF DYNAMICAL SYSTEMS AND GENERAL TRANSFORMATION GROUPS WITH INVARIANT MEASURE A. B. Katok, Ya. G. Sinai, and A. M. Stepin UDC 513.83:513.88+517.9+519.4 INTRODUCTION The theory of dynamical systems with invariant measure, or ergodic theory, is one of those domains of mathematics whose form
Complexity within the Air Force acquisition system gaining insight from a theory of collapse
Marticello, Daniel Nicholas, Jr
2012-01-01T23:59:59.000Z
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 ...
National Bioenergy Center Biochemical Platform Integration Project
Not Available
2008-07-01T23:59:59.000Z
April through June 2008 update on activities of the National Bioenergy Center's Biochemical Platform Integration Project.
Biochemical Conversion Pilot Plant (Fact Sheet)
Not Available
2012-06-01T23:59:59.000Z
This fact sheet provides information about Biochemical Conversion Pilot Plant capabilities and resources at NREL.
A Practical Theory of Micro-Solar Power Sensor Networks JAEIN JEONG, Cisco Systems
California at Berkeley, University of
9 A Practical Theory of Micro-Solar Power Sensor Networks JAEIN JEONG, Cisco Systems DAVID CULLER, University of California, Berkeley Building a micro-solar power system is challenging because it must address develop a practical theory of micro-solar power systems that is materialized in a simulation suite
Bath Institute for Complex Systems On Landau theory and symmetric energy landscapes for phase
Zimmer, Johannes
BICS Bath Institute for Complex Systems On Landau theory and symmetric energy landscapes for phase://www.bath.ac.uk/math-sci/BICS #12;On Landau theory and symmetric energy landscapes for phase transitions Kai Hormann and Johannes Zimmer Abstract Martensitic phase transformations, Landau theory, energy function, orbit space, geomet
Vallino, Joseph J.
Theory: Biological systems organize to maximize entropy production subject to information the fitness landscape is as dynamic as the organisms themselves. The theory of MEP under biophysicochemical, 2005b) presented a provisional proof on the theory of maximum entropy production (MEP), which posits
Minimum Resource Characterization of Biochemical Analyses for Digital
Akella, Srinivas
;2 Lingzhi Luo and Srinivas Akella 1 Introduction Low-cost, portable lab-on-a-chip systems capable of rapid versatile, yet low cost systems. Hence it is important to iden- tify the class of biochemical analyses requirements, towards the design of cost and space-efficient biochips. Mixers and storage units are two primary
Sandia National Laboratories: Biochemical Conversion Program
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
with: Biochemical Conversion Program * Biofuels * Combustion Research Facility * CRF * Energy * Lignocellulosic biomass * Microalgae * SAND 2011-5054W * Transportation Energy...
Multiple capillary biochemical analyzer
Dovichi, N.J.; Zhang, J.Z.
1995-08-08T23:59:59.000Z
A multiple capillary analyzer allows detection of light from multiple capillaries with a reduced number of interfaces through which light must pass in detecting light emitted from a sample being analyzed, using a modified sheath flow cuvette. A linear or rectangular array of capillaries is introduced into a rectangular flow chamber. Sheath fluid draws individual sample streams through the cuvette. The capillaries are closely and evenly spaced and held by a transparent retainer in a fixed position in relation to an optical detection system. Collimated sample excitation radiation is applied simultaneously across the ends of the capillaries in the retainer. Light emitted from the excited sample is detected by the optical detection system. The retainer is provided by a transparent chamber having inward slanting end walls. The capillaries are wedged into the chamber. One sideways dimension of the chamber is equal to the diameter of the capillaries and one end to end dimension varies from, at the top of the chamber, slightly greater than the sum of the diameters of the capillaries to, at the bottom of the chamber, slightly smaller than the sum of the diameters of the capillaries. The optical system utilizes optic fibers to deliver light to individual photodetectors, one for each capillary tube. A filter or wavelength division demultiplexer may be used for isolating fluorescence at particular bands. 21 figs.
Geometrical structures of higher-order dynamical systems and field theories
Pedro D. Prieto-Martínez
2014-10-28T23:59:59.000Z
In this Thesis we develop the geometric formulations for higher-order autonomous and non-autonomous dynamical systems, and second-order field theories. In all cases, the physical information of the system is given in terms of a Lagrangian function/density, or a Hamiltonian that admits Lagrangian counterpart. These geometric frameworks are used to study several relevant physical examples and applications, such as the Hamilton-Jacobi theory for higher-order mechanical systems, relativistic spin particles and deformation problems in mechanics, and the Korteweg-de Vries equation and other systems in field theory.
Few-Body Systems and the Pionless Effective Field Theory
Lucas Platter
2009-09-30T23:59:59.000Z
The pionless effective field theory (EFT) is the appropriate low-energy EFT for short-range interactions that display a large scattering length. It has been successfully applied in atomic, nuclear and particle physics. We give an overview over recent calculations employing the pionless effective field theory and lay emphasis on applications in the three- and four-body sector where the most exciting developments have occurred.
Financing Advanced Biofuels, Biochemicals And Biopower In Integrated...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Financing Advanced Biofuels, Biochemicals And Biopower In Integrated Biorefineries Financing Advanced Biofuels, Biochemicals And Biopower In Integrated Biorefineries Afternoon...
Biochemical Conversion | Department of Energy
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels DataEnergyDepartmentWindConversion Biochemical Conversion This area focuses
Theory for the optimal control of time-averaged quantities in open quantum systems
Ilia Grigorenko; Martin E. Garcia; K. H. Bennemann
2002-03-25T23:59:59.000Z
We present variational theory for optimal control over a finite time interval in quantum systems with relaxation. The corresponding Euler-Lagrange equations determining the optimal control field are derived. In our theory the optimal control field fulfills a high order differential equation, which we solve analytically for some limiting cases. We determine quantitatively how relaxation effects limit the control of the system. The theory is applied to open two level quantum systems. An approximate analytical solution for the level occupations in terms of the applied fields is presented. Different other applications are discussed.
Phase space theory of quantum–classical systems with nonlinear and stochastic dynamics
Buri?, Nikola, E-mail: buric@ipb.ac.rs; Popovi?, Duška B.; Radonji?, Milan; Prvanovi?, Slobodan
2014-04-15T23:59:59.000Z
A novel theory of hybrid quantum–classical systems is developed, utilizing the mathematical framework of constrained dynamical systems on the quantum–classical phase space. Both, the quantum and classical descriptions of the respective parts of the hybrid system are treated as fundamental. Therefore, the description of the quantum–classical interaction has to be postulated, and includes the effects of neglected degrees of freedom. Dynamical law of the theory is given in terms of nonlinear stochastic differential equations with Hamiltonian and gradient terms. The theory provides a successful dynamical description of the collapse during quantum measurement. -- Highlights: •A novel theory of quantum–classical systems is developed. •Framework of quantum constrained dynamical systems is used. •A dynamical description of the measurement induced collapse is obtained.
Simulations of Solar System observations in alternative theories of gravity
A. Hees; B. Lamine; S. Reynaud; M. -T. Jaekel; C. Le Poncin-Lafitte; V. Lainey; A. Füzfa; J. -M. Courty; V. Dehant; P. Wolf
2013-02-27T23:59:59.000Z
In this communication, we focus on the possibility to test General Relativity (GR) with radioscience experiments. We present simulations of observables performed in alternative theories of gravity using a software that simulates Range/Doppler signals directly from the space time metric. This software allows one to get the order of magnitude and the signature of the modifications induced by an alternative theory of gravity on radioscience signals. As examples, we present some simulations for the Cassini mission in Post-Einsteinian gravity (PEG) and with Standard Model Extension (SME).
A modular microfluidic architecture for integrated biochemical analysis
Barron, Annelise E.
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
Rudenko, Yu.N.; Ushakov, I.A.
1984-01-01T23:59:59.000Z
Certain features of mathematical models of energy-system reliability are analyzed. Mathematical models employed in reliability theory for technical systems are considered together with the possibility of modifying them for use in the solution of problems associated with ensuring the reliability of energy systems.
Solar System Constraints on a Cosmologically Viable $f(R)$ Theory
Yousef Bisabr
2009-12-02T23:59:59.000Z
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.
Hierarchic Theory of Complex Systems (biosystems, colloids): self-organization & osmos
Alex Kaivarainen
2000-03-24T23:59:59.000Z
1. Protein domain mesoscopic organization 2. Quantum background of lipid domain organization in biomembranes 3. Hierarchic approach to theory of solutions and colloid systems 4. Distant solvent-mediated interaction between macromolecules 5. Spatial self-organization in the water-macromolecular systems 6. Properties of [bisolvent - polymer system] 7. Osmosis and solvent activity. Traditional and mesoscopic approach
Statistical Mechanics of Ecological Systems: Neutral Theory and Beyond
Azaele, Sandro; Grilli, Jacopo; Volkov, Igor; Banavar, Jayanth R; Maritan, Amos
2015-01-01T23:59:59.000Z
The simplest theories often have much merit and many limitations, and in this vein, the value of Neutral Theory (NT) has been the subject of much debate over the past 15 years. NT was proposed at the turn of the century by Stephen Hubbell to explain pervasive patterns observed in the organization of ecosystems. Its originally tepid reception among ecologists contrasted starkly with the excitement it caused among physicists and mathematicians. Indeed, NT spawned several theoretical studies that attempted to explain empirical data and predicted trends of quantities that had not yet been studied. While there are a few reviews of NT oriented towards ecologists, our goal here is to review the quantitative results of NT and its extensions for physicists who are interested in learning what NT is, what its successes are and what important problems remain unresolved. Furthermore, we hope that this review could also be of interest to theoretical ecologists because many potentially interesting results are buried in the ...
Algebraic theory of type-and-effect systems
Kammar, Ohad
2014-06-27T23:59:59.000Z
We present a general semantic account of Gifford-style type-and-effect systems. These type systems provide lightweight static analyses annotating program phrases with the sets of possible computational effects they may ...
NREL: Biomass Research - Biochemical Conversion Projects
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
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...
Exterior Differential Systems for Yang-Mills Theories
Frank B. Estabrook
2008-12-05T23:59:59.000Z
Exterior differential systems are given, and their Cartan characters calculated, for Maxwell and SU(2)-Yang-Mills equations in dimensions from three to six.
Theory and Practice of Enhancing a Legacy Software System
Calder, M.
Calder,M. Magill,E. Reiff-Marganiec,S. Thayananthan,V. Systems Engineering for Business Process Change (volume 2), P.Henderson (ed.) Springer
Pionless Effective Field Theory in Few-Nucleon Systems
Kirscher, Johannes
2015-01-01T23:59:59.000Z
A systematic description of low-energy observables in light nuclei is presented. The effective field theory formalism without pions is extended to: i) predictions with next-to-leading-order (non-perturbatively) accuracy for the 4-helium binding energy B({\\alpha}), the triton charge radius, and the 3-helium-neutron scattering length; ii) phase shifts for neutron-deuteron scattering and {\\alpha}-neutron low-energy scattering at leading order; iii) the ground states of the 5-helium (with and without Coulomb interaction) and 6-helium isotopes up to next-to-leading order; The convergence from leading- to next-to-leading order of the theory is demonstrated for correlations between: i) the triton binding energy B(t) and the triton charge radius; ii) B(t) and the 4-helium binding energy B({\\alpha}); Furthermore, a correlation between B(t) and the scattering length in the singlet S-wave channel of neutron-helium-3 scattering is discovered, and a model-independent estimate for the trinucleon binding energy splitting is...
Geometrical Hyperbolic Systems for General Relativity and Gauge Theories
A. Abrahams; A. Anderson; Y. Choquet-Bruhat; J. W. York Jr
1996-05-08T23:59:59.000Z
The evolution equations of Einstein's theory and of Maxwell's theory---the latter used as a simple model to illustrate the former--- are written in gauge covariant first order symmetric hyperbolic form with only physically natural characteristic directions and speeds for the dynamical variables. Quantities representing gauge degrees of freedom [the spatial shift vector $\\beta^{i}(t,x^{j})$ and the spatial scalar potential $\\phi(t,x^{j})$, respectively] are not among the dynamical variables: the gauge and the physical quantities in the evolution equations are effectively decoupled. For example, the gauge quantities could be obtained as functions of $(t,x^{j})$ from subsidiary equations that are not part of the evolution equations. Propagation of certain (``radiative'') dynamical variables along the physical light cone is gauge invariant while the remaining dynamical variables are dragged along the axes orthogonal to the spacelike time slices by the propagating variables. We obtain these results by $(1)$ taking a further time derivative of the equation of motion of the canonical momentum, and $(2)$ adding a covariant spatial derivative of the momentum constraints of general relativity (Lagrange multiplier $\\beta^{i}$) or of the Gauss's law constraint of electromagnetism (Lagrange multiplier $\\phi$). General relativity also requires a harmonic time slicing condition or a specific generalization of it that brings in the Hamiltonian constraint when we pass to first order symmetric form. The dynamically propagating gravity fields straightforwardly determine the ``electric'' or ``tidal'' parts of the Riemann tensor.
Coherent versus measurement feedback: Linear systems theory for quantum information
Naoki Yamamoto
2014-10-10T23:59:59.000Z
To control a quantum system via feedback, we generally have two options in choosing control scheme. One is the coherent feedback, which feeds the output field of the system, through a fully quantum device, back to manipulate the system without involving any measurement process. The other one is the measurement-based feedback, which measures the output field and performs a real-time manipulation on the system based on the measurement results. Both schemes have advantages/disadvantages, depending on the system and the control goal, hence their comparison in several situation is important. This paper considers a general open linear quantum system with the following specific control goals; back-action evasion (BAE), generation of a quantum non-demolished (QND) variable, and generation of a decoherence-free subsystem (DFS), all of which have important roles in quantum information science. Then some no-go theorems are proven, clarifying that those goals cannot be achieved by any measurement-based feedback control. On the other hand it is shown that, for each control goal, there exists a coherent feedback controller accomplishing the task. The key idea to obtain all the results is system theoretic characterizations of BAE, QND, and DFS in terms of controllability and observability properties or transfer functions of linear systems, which are consistent with their standard definitions.
774 BIOCHEMICAL SOCIETY TRANSACTIONS Bennett, J. (1983) Biochem. J. 212, 1-13
Allen, John F.
774 BIOCHEMICAL SOCIETY TRANSACTIONS Bennett, J. (1983) Biochem. J. 212, 1-13 Bennett, J. (1984)in Science Publishers, Amsterdam Bennett, J., Steinback,K. E. & Amtzen, C. J. (1980) Proc. Natl. Acad. Sci. U. & Bennett, J. (1981) FEES Kyle, D. J., Staehelin,L. A. & Arntzen, C. J. (1983)Arch. Biochem. Lin, Z
Malicious Code Execution Detection and Response Immune System inpired by the Danger Theory
Aickelin, Uwe
Malicious Code Execution Detection and Response Immune System inpired by the Danger Theory Jungwon an artificial immune system. A recently developed hypothesis in immunology, the Danger The- ory, states that our invaders, plus signals generated by the host indic- ating danger and damage. We propose the incorporation
Particle transport in low-energy ventilation systems. Part 1: theory of steady states
Bolster, Diogo
, such as that pro- vided by a conventional overhead heating, ventilating and air-conditioning system, is mixingParticle transport in low-energy ventilation systems. Part 1: theory of steady states Introduction of this energy is spent on ventilation of buildings with summer time cooling account for almost 10% of the US
A contact theory for surface tension driven systems Roger A. Sauer 1
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
Two definitions of the electric polarizability of a bound system in relativistic quantum theory
F. A. B. Coutinho; Y. Nogami; Lauro Tomio
1998-12-24T23:59:59.000Z
For the electric polarizability of a bound system in relativistic quantum theory, there are two definitions that have appeared in the literature. They differ depending on whether or not the vacuum background is included in the system. A recent confusion in this connection is clarified.
Computing Resources at Chemical and Biochemical Engineering
Main Site Dept. of Chemical and Biochemical Engineering, 98 Brett Road Piscataway, NJ 08854-8058 PhoneComputing Resources at Chemical and Biochemical Engineering Note that use of all Rutgers University at: http://rucs.rutgers.edu/acceptable- use.html. Microlab. The PC Microlab (Engineering Room C233
A semiclassical theory of quantum noise in open chaotic systems
B. C. Bag; S. Chaudhuri; J. Ray Chaudhuri; D. S. Ray
1998-11-13T23:59:59.000Z
We consider the quantum evolution of classically chaotic systems in contact with surroundings. Based on $\\hbar$-scaling of an equation for time evolution of the Wigner's quasi-probability distribution function in presence of dissipation and thermal diffusion we derive a semiclassical equation for quantum fluctuations. This identifies an early regime of evolution dominated by fluctuations in the curvature of the potential due to classical chaos and dissipation. A stochastic treatment of this classical fluctuations leads us to a Fokker-Planck equation which is reminiscent of Kramers' equation for thermally activated processes. This reveals an interplay of three aspects of evolution of quantum noise in weakly dissipative open systems; the reversible Liouville flow, the irreversible chaotic diffusion which is characteristic of the system itself, and irreversible dissipation induced by the external reservoir. It has been demonstrated that in the dissipation-free case a competition between Liouville flow in the contracting direction of phase space and chaotic diffusion sets a critical width in the Wigner function for quantum fluctuations. We also show how the initial quantum noise gets amplified by classical chaos and ultimately equilibrated under the influence of dissipation. We establish that there exists a critical limit to the expansion of phase space. The limit is determined by chaotic diffusion and dissipation. Making use of appropriate quantum-classical correspondence we verify the semiclassical analysis by the fully quantum simulation in a chaotic quartic oscillator.
The free energy cost of accurate biochemical oscillations
Cao, Yuansheng; Ouyang, Qi; Tu, Yuhai
2015-01-01T23:59:59.000Z
Oscillation is an important cellular process that regulates timing of different vital life cycles. However, in the noisy cellular environment, oscillations can be highly inaccurate due to phase fluctuations. It remains poorly understood how biochemical circuits suppress phase fluctuations and what is the incurred thermodynamic cost. Here, we study four different types of biochemical oscillations representing three basic oscillation motifs shared by all known oscillatory systems. We find that the phase diffusion constant follows the same inverse dependence on the free energy dissipation per period for all systems studied. This relationship between the phase diffusion and energy dissipation is shown analytically in a model of noisy oscillation. Microscopically, we find that the oscillation is driven by multiple irreversible cycles that hydrolyze the fuel molecules such as ATP; the number of phase coherent periods is proportional to the free energy consumed per period. Experimental evidence in support of this un...
Integrating Random Matrix Theory Predictions with Short-Time Dynamical Effects in Chaotic Systems
A. Matthew Smith; Lev Kaplan
2010-06-29T23:59:59.000Z
We discuss a modification to Random Matrix Theory eigenstate statistics, that systematically takes into account the non-universal short-time behavior of chaotic systems. The method avoids diagonalization of the Hamiltonian, instead requiring only a knowledge of short-time dynamics for a chaotic system or ensemble of similar systems. Standard Random Matrix Theory and semiclassical predictions are recovered in the limits of zero Ehrenfest time and infinite Heisenberg time, respectively. As examples, we discuss wave function autocorrelations and cross-correlations, and show that significant improvement in accuracy is obtained for simple chaotic systems where comparison can be made with brute-force diagonalization. The accuracy of the method persists even when the short-time dynamics of the system or ensemble is known only in a classical approximation. Further improvement in the rate of convergence is obtained when the method is combined with the correlation function bootstrapping approach introduced previously.
2011 Biomass Program Platform Peer Review: Biochemical Conversion...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Biochemical Conversion 2011 Biomass Program Platform Peer Review: Biochemical Conversion This document summarizes the recommendations and evaluations provided by an independent...
Frontiers, Opportunities, and Challenges in Biochemical and Chemical...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Frontiers, Opportunities, and Challenges in Biochemical and Chemical Catalysis of CO2. Frontiers, Opportunities, and Challenges in Biochemical and Chemical Catalysis of CO2....
Biochemical Production of Ethanol from Corn Stover: 2007 State...
Biochemical Production of Ethanol from Corn Stover: 2007 State of Technology Model Biochemical Production of Ethanol from Corn Stover: 2007 State of Technology Model An update to...
Aeschbach-Hertig, Werner
Notation and definitions Origin and description of fractionation Fractionating processes Rayleigh distillation Literature: Mook Vol. I, ch. 3 and 4 Physics of Aquatic Systems II, 3. Stable Isotopes - Theory "concentration" or mixing ratio: Fractional abundance of given isotope relative to all isotopes of the element
Theory and Practice of Cavity RF Test Systems
Tom Powers
2006-08-28T23:59:59.000Z
Over the years Jefferson Lab staff members have performed about 2500 cold cavity tests on about 500 different superconducting cavities. Most of these cavities were later installed in 73 different cryomodules, which were used in three different accelerators. All of the cavities were tested in our vertical test area. About 25% of the cryomodules were tested in our cryomodule test facility and later commissioned in an accelerator. The remainder of the cryomodules were tested and commissioned after they were installed in their respective accelerator. This paper is an overview which should provide a practical background in the RF systems used to test the cavities as well as provide the mathematics necessary to convert the raw pulsed or continuous wave RF signals into useful information such as gradient, quality factor, RF-heat loads and loaded Q?s. Additionally, I will provide the equations necessary for determining the measurement error associated with these values.
Multiscale simulations of biochemically reacting systems
Cheng, Yuhui
2007-01-01T23:59:59.000Z
Energy barriers for the phosphoryl transfer reaction in the wild-energy barriers for the reorientation of the side-chain of the P- site Ser in the wildEnergy barriers for the phosphoryl transfer reaction in the wild-
Qu, Zhihua
. Controllers designed using modern state-space theory have been serving power systems for decades power system excitation control design via theories of feedback linearization control and nonlinear robust control DEQIANG GAN{, ZHIHUA QU{ and HONGZHI CAI{ The dynamics of a large-scale power system
Stochastic chemical enrichment in metal-poor systems I. Theory
T. Karlsson
2005-04-27T23:59:59.000Z
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***)
A TYPE REDUCTION THEORY FOR SYSTEMS WITH REPLICATED TOMASZ MAZUR AND GAVIN LOWE
Oxford, University of
of processes in the network. We use CSP as our formalism. We present a type reduction theory, which operational semantics for CSP processes that satisfy certain normality requirements, and we provide a set for verification of safety-critical systems; it is highly unlikely that someone would ever want to perform testing
McGaughey, Alan
Eliminating Software Task Overestimation Using Economic Game Theory to Create a Competitive Incentive System T.J. Glazier It is common for software engineers to overestimate the time to successfully is an organizational behavior that is the product of tangible penalties for being late and no incentives for being
Optimizing the Energy Delivery via V2G Systems based on Stochastic Inventory Theory
Zhuang, Weihua
1 Optimizing the Energy Delivery via V2G Systems based on Stochastic Inventory Theory Hao Liang, Fellow, IEEE Abstract--In this paper, we study the optimal energy delivery problem from viewpoints formulate the optimization problem based on a general plug- in hybrid electric vehicle (PHEV) model, taking
Existence of radial stationary solutions for a system in combustion theory
Coville, Jerome; 10.3934/dcdsb.2011.16.xx
2011-01-01T23:59:59.000Z
In this paper, we construct radially symmetric solutions of a nonlinear noncooperative elliptic system derived from a model for flame balls with radiation losses. This model is based on a one step kinetic reaction and our system is obtained by approximating the standard Arrehnius law by an ignition nonlinearity, and by simplifying the term that models radiation. We prove the existence of 2 solutions using degree theory.
Design guidelines for optical resonator biochemical sensors
Kimerling, Lionel C.
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 ...
On the use of the theory of dynamical systems for transient problems
Ugo Galvanetto; Luca Magri
2014-11-01T23:59:59.000Z
This paper is a preliminary work to address the problem of dynamical systems with parameters varying in time. An idea to predict their behaviour is proposed. These systems are called \\emph{transient systems}, and are distinguished from \\emph{steady systems}, in which parameters are constant. In particular, in steady systems the excitation is either constant (e.g. nought) or periodic with amplitude, frequency and phase angle which do not vary in time. We apply our method to systems which are subjected to a transient excitation, which is neither constant nor periodic. The effect of switching-off and full-transient forces is investigated. The former can be representative of switching-off procedures in machines; the latter can represent earthquake vibrations, wind gusts, etc. acting on a mechanical system. This class of transient systems can be seen as the evolution of an ordinary steady system into another ordinary steady system, for both of which the classical theory of dynamical systems holds. The evolution from a steady system to the other is driven by a transient force, which is regarded as a map between the two steady systems.
Theory of competition between fusion and quasi-fission in a heavy fusing system
Alexis Diaz-Torres
2006-04-05T23:59:59.000Z
A theory of the competition between fusion and quasi-fission in a heavy fusing system is proposed, which is based on a master equation and the two-center shell model. Fusion and quasi-fission arise from a diffusion process in an ensemble of nuclear shapes, each of which evolves towards the thermal equilibrium. The master equation describes the diffusion of the nuclear shapes due to quantum and thermal fluctuations. Other crucial physical effects like dissipation, ground-state shell effects, diabatic effects and rotational effects are also incorporated into the theory. The fusing system moves in a dynamical (time-dependent) collective potential energy surface which is initially diabatic and gradually becomes adiabatic. The microscopic ingredients of the theory are obtained with a realistic two-center shell model based on Woods-Saxon potentials. Numerical calculations for several reactions leading to $^{256}$No are discussed. Among other important conclusions, the results indicate that (i) the diabatic effects play a very important role in the onset of fusion hindrance for heavy systems, and (ii) very asymmetric reactions induced by closed shell nuclei seem to be the best suited to synthesize the heaviest compound nuclei.
On the Foundations of the Theory of a new Collatz Based Number System
Michael A. Idowu
2015-03-18T23:59:59.000Z
Set out here are some fundamental theories that may be regarded as newly discovered metamathematics of the odd integers in relation to the Collatz conjecture (also called the 3x+1 problem). Originally motivated by the requirement to invent a new optimised integer factorisation method, this foundational paper primarily focuses on the foundation, formalisation and presentation of a new theoretical framework (schema or blueprint) of a Collatz based number system. The proposed framework is based on metamathematical theories meticulously derived through iterative analyses and reverse engineering (i.e., by hand and mathematical computations) of many large subsets of integers. A collation of the fundamental results from these analytical attempts has led to the establishment of a completely deterministic model of a generalised Collatz based number system that is fundamentally and strangely associated with nonchaotic patterns. The proposed Collatz based number schema comprises of both visual and theoretical representations of many hidden patterns in Collatz sequences yet to be reported in literature. This novel theoretical approach may be viewed as a new method to contemporary Collatz conjecture research which may be connected to the proofs of many other mathematical theorems in number theory and discrete mathematics.
Paris-Sud XI, UniversitÃ© de
Adaptive and context-aware scenarios for technology- enhanced learning system based on a didactical-aware model of scenario based on a didactical theory and closely related to a domain model, a learner model and applications"; ii) the theory in didactic anthropology of knowledge of Chevallard [1]; iii) a hierarchical task
Eclipsing binary systems as tests of low-mass stellar evolution theory
Feiden, Gregory A
2015-01-01T23:59:59.000Z
Stellar fundamental properties (masses, radii, effective temperatures) can be extracted from observations of eclipsing binary systems with remarkable precision, often better than 2%. Such precise measurements afford us the opportunity to confront the validity of basic predictions of stellar evolution theory, such as the mass-radius relationship. A brief historical overview of confrontations between stellar models and data from eclipsing binaries is given, highlighting key results and physical insight that have led directly to our present understanding. The current paradigm that standard stellar evolution theory is insufficient to describe the most basic relation, that of a star's mass to its radius, along the main sequence is then described. Departures of theoretical expectations from empirical data, however, provide a rich opportunity to explore various physical solutions, improving our understanding of important stellar astrophysical processes.
Duality and Modularity in Elliptic Integrable Systems and Vacua of N=1* Gauge Theories
Antoine Bourget; Jan Troost
2015-01-21T23:59:59.000Z
We study complexified elliptic Calogero-Moser integrable systems. We determine the value of the potential at isolated extrema, as a function of the modular parameter of the torus on which the integrable system lives. We calculate the extrema for low rank B,C,D root systems using a mix of analytical and numerical tools. For so(5) we find convincing evidence that the extrema constitute a vector valued modular form for a congruence subgroup of the modular group. For so(7) and so(8), the extrema split into two sets. One set contains extrema that constitute vector valued modular forms for congruence subgroups, and a second set contains extrema that exhibit monodromies around points in the interior of the fundamental domain. The former set can be described analytically, while for the latter, we provide an analytic value for the point of monodromy for so(8), as well as extensive numerical predictions for the Fourier coefficients of the extrema. Our results on the extrema provide a rationale for integrality properties observed in integrable models, and embed these into the theory of vector valued modular forms. Moreover, using the data we gather on the modularity of complexified integrable system extrema, we analyse the massive vacua of mass deformed N=4 supersymmetric Yang-Mills theories with low rank gauge group of type B,C and D. We map out their transformation properties under the infrared electric-magnetic duality group as well as under triality for N=1* with gauge algebra so(8). We compare the exact massive vacua to those found in a semi-classical analysis, and find surprising properties of the quantum gauge theories.
Duality and Modularity in Elliptic Integrable Systems and Vacua of N=1* Gauge Theories
Antoine Bourget; Jan Troost
2015-04-09T23:59:59.000Z
We study complexified elliptic Calogero-Moser integrable systems. We determine the value of the potential at isolated extrema, as a function of the modular parameter of the torus on which the integrable system lives. We calculate the extrema for low rank B,C,D root systems using a mix of analytical and numerical tools. For so(5) we find convincing evidence that the extrema constitute a vector valued modular form for a congruence subgroup of the modular group. For so(7) and so(8), the extrema split into two sets. One set contains extrema that make up vector valued modular forms for congruence subgroups, and a second set contains extrema that exhibit monodromies around points in the interior of the fundamental domain. The former set can be described analytically, while for the latter, we provide an analytic value for the point of monodromy for so(8), as well as extensive numerical predictions for the Fourier coefficients of the extrema. Our results on the extrema provide a rationale for integrality properties observed in integrable models, and embed these into the theory of vector valued modular forms. Moreover, using the data we gather on the modularity of complexified integrable system extrema, we analyse the massive vacua of mass deformed N=4 supersymmetric Yang-Mills theories with low rank gauge group of type B,C and D. We map out their transformation properties under the infrared electric-magnetic duality group as well as under triality for N=1* with gauge algebra so(8). We find several intriguing properties of the quantum gauge theories.
Towards A Theory of Autonomous Reconstitution of Compromised Cyber-Systems
Ramuhalli, Pradeep; Halappanavar, Mahantesh; Coble, Jamie B.; Dixit, Mukul
2013-11-12T23:59:59.000Z
The ability to maintain mission-critical operations in cyber-systems in the face of disruptions is critical. Faults in cyber systems can come from accidental sources (e.g., natural failure of a component) or deliberate sources (e.g., an intelligent adversary). Natural and intentional manipulation of data, computing, or coordination are the most impactful ways that an attacker can prevent an infrastructure from realizing its mission goals. Under these conditions, the ability to reconstitute critical infrastructure becomes important. Specifically, the question is: Given an intelligent adversary, how can cyber systems respond to keep critical infrastructure operational? In cyber systems, the distributed nature of the system poses serious difficulties in maintaining operations, in part due to the fact that a centralized command and control apparatus is unlikely to provide a robust framework for resilience. Resilience in cyber-systems, in general, has several components, and requires the ability to anticipate and withstand attacks or faults, as well as recover from faults and evolve the system to improve future resilience. The recovery effort (and any subsequent evolution) may require significant reconfiguration of the system (at all levels – hardware, software, services, permissions, etc.) if the system is to be made resilient to further attack or faults. This is especially important in the case of ongoing attacks, where reconfiguration decisions must be taken with care to avoid further compromising the system while maintaining continuity of operations. Collectively, we will label this recovery and evolution process as “reconstitution”. Currently, reconstitution is performed manually, generally after-the-fact, and usually consists of either standing up redundant systems, check-points (rolling back the configuration to a “clean” state), or re-creating the system using “gold-standard” copies. For enterprise systems, such reconstitution may be performed either directly on hardware, or using virtual machines. A significant challenge within this context is the ability to verify that the reconstitution is performed in a manner that renders the cyber-system resilient to ongoing and future attacks or faults. Fundamentally, the need is to determine optimal configuration of the cyber system when a fault is determined to be present. While existing theories for fault tolerance (for example, Byzantine fault tolerance) can guarantee resilience under certain conditions, in practice, these theories can break down in the face of an intelligent adversary. Further, it is difficult, in a dynamically evolving environment, to determine whether the necessary conditions for resilience have been met, resulting in difficulties in achieving resilient operation. In addition, existing theories do not sufficiently take into account the cost for attack and defense (the adversary is generally assumed to have infinite resources and time), hierarchy of importance (all network resources are assumed to be equally important), and the dynamic nature of some attacks (i.e., as the attack evolves, can resilience be maintained?). Alternative approaches to resilience based on a centralized command and control structure suffer from a single-point-failure. This paper presents preliminary research towards concepts for effective autonomous reconstitution of compromised cyber systems. We describe a mathematical framework as a first step towards a theoretical basis for autonomous reconstitution in dynamic cyber-system environments. We then propose formulating autonomous reconstitution as an optimization problem and describe some of the challenges associated with this formulation. This is followed by a brief discussion on potential solutions to these challenges.
Clinical Biochemical Geneticist Two-Year Fellowship
Finley Jr., Russell L.
Clinical Biochemical Geneticist Two-Year Fellowship YEAR 1 YEAR 2 MONDAY TUESDAY WEDNESDAY THURSDAY FRIDAY A.M. Lab Research & Clinical Training Lab Research & Clinical Training Lab Research & Clinical Training 8AM Newborn Screen Follow-up conference Lab Research & Clinical Training Lab Research & Clinical
Solar System planetary orbital motions and f(R) Theories of Gravity
Matteo Luca Ruggiero; Lorenzo Iorio
2006-12-14T23:59:59.000Z
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.
Omar Maj
2008-02-12T23:59:59.000Z
This is the second part of a work aimed to study complex-phase oscillatory solutions of nonlinear symmetric hyperbolic systems. We consider, in particular, the case of one space dimension. That is a remarkable case, since one can always satisfy the \\emph{naive} coherence condition on the complex phases, which is required in the construction of the approximate solution. Formally the theory applies also in several space dimensions, but the \\emph{naive} coherence condition appears to be too restrictive; the identification of the optimal coherence condition is still an open problem.
The harmonic oscillator with dissipation within the theory of open quantum systems
A. Isar
2005-08-18T23:59:59.000Z
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.
Tuning Range-Separated Density Functional Theory for Photocatalytic Water Splitting Systems
Bokareva, Olga S; Bokarev, Sergey I; Kühn, Oliver
2015-01-01T23:59:59.000Z
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.
ORAL QUAL SYLLABUS: SET THEORY; ERGODIC THEORY
ORAL QUAL SYLLABUS: SET THEORY; ERGODIC THEORY SAMUEL COSKEY Set Theory. #15; Basic set theory's theorem { there exists an Aronsajn tree { Shanin's root system lemma (#2;2) #15; Descriptive set theory of set theory (Jech 12,13) { Mostowski's collapsing theorem { relativization and absolute formulas { re
Friedman, Eby G.
, and soft- ware implementation of this repeater insertion system are presented in this paper. Results fromIEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS--I: FUNDAMENTAL THEORY AND APPLICATIONS, VOL. 47, NO. 10 these insertion methodologies improve delay from 25% to 60% versus typical cascaded buffer methodologies. Global
Clausen, Alison, E-mail: aliclausen@protocol.com.a [WWF Madagascar and Western Indian Ocean Programme Office, BP 738, Antananarivo 101 (Madagascar); Vu, Hoang Hoa, E-mail: hoanghoavu@yahoo.co [Water Resources University, Hanoi (Viet Nam); Pedrono, Miguel, E-mail: pedrono@cirad.f [CIRAD, Campus International de Baillarguet, 34398 Montpellier Cedex 5 (France)
2011-03-15T23:59:59.000Z
Vietnam has one of the fastest growing economies in the world and has achieved significant socio-economic development in recent years. However this growth is placing increased pressure on an already depleted natural environment. Environmental impact assessment (EIA) is recognised by the Government and international organizations as an important tool in the management of the impacts of future development on the country's natural resource base. The Government's commitment to EIA has been demonstrated through the development and adoption of the Law on Environment Protection (Revised) in 2005 which sets out the requirements for EIA and which represents a major step in the development of a robust legislative framework for EIA in Vietnam. The Law on Environment Protection (Revised) 2005 has now been operational for several years and we have undertaken an evaluation of the resulting EIA system in Vietnam. We argue that while significant improvements have been achieved in the EIA policy framework, an important gap remains between EIA theory and practice. We contend that the basis of the current EIA legislation is strong and that future developments of the EIA system in Vietnam should focus on improving capacity of EIA practitioners rather than further substantial legislative change. Such improvements would allow the Vietnamese EIA system to emerge as an effective and efficient tool for environmental management in Vietnam and as a model EIA framework for other developing countries.
Biochemical processing of heavy oils and residuum
Lin, M.S.; Premuzic, T.; Yablon, J.H.; Zhou, Wei-Min
1995-05-01T23:59:59.000Z
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.
NREL: Biomass Research - Biochemical Conversion Capabilities
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Saleshttp://www.fnal.gov/directorate/nalcal/nalcal02_07_05_files/nalcal.gifNREL NREL RefinesAnalysisBiochemical Conversion
A General Systems Theory for Atmospheric Flows and Atmospheric Aerosol Size Distribution
A. M. Selvam
2011-07-25T23:59:59.000Z
Atmospheric flows exhibit selfsimilar fractal spacetime fluctuations manifested as the fractal geometry to global cloud cover pattern and inverse power law form for power spectra of meteorological parameters such as windspeed, temperature, rainfall etc. Inverse power law form for power spectra indicate long-range spacetime correlations or non-local connections and is a signature of selforganised criticality generic to dynamical systems in nature such as river flows, population dynamics, heart beat patterns etc. The author has developed a general systems theory which predicts the observed selforganised criticality as a signature of quantumlike chaos in dynamical systems. The model predictions are (i) The fractal fluctuations can be resolved into an overall logarithmic spiral trajectory with the quasiperiodic Penrose tiling pattern for the internal structure. (ii) The probability distribution represents the power (variance) spectrum for fractal fluctuations and follows universal inverse power law form incorporating the golden mean. Such a result that the additive amplitudes of eddies when squared represent probability distribution is observed in the subatomic dynamics of quantum systems such as the electron or photon. Therefore the irregular or unpredictable fractal fluctuations exhibit quantumlike chaos. (iii) Atmospheric aerosols are held in suspension by the vertical velocity distribution (spectrum). The atmospheric aerosol size spectrum is derived in terms of the universal inverse power law characterizing atmospheric eddy energy spectrum. Model predicted spectrum is in agreement with the following two experimentally determined atmospheric aerosol data sets, (i) SAFARI 2000 CV-580 Aerosol Data, Dry Season 2000 (CARG) (ii) World Data Centre Aerosols data sets for the three stations Ny {\\AA}lesund, Pallas and Hohenpeissenberg.
Can bio-inspired information processing steps be realized as synthetic biochemical processes?
Vladimir Privman; Evgeny Katz
2014-11-07T23:59:59.000Z
We consider possible designs and experimental realiza-tions in synthesized rather than naturally occurring bio-chemical systems of a selection of basic bio-inspired information processing steps. These include feed-forward loops, which have been identified as the most common information processing motifs in many natural pathways in cellular functioning, and memory-involving processes, specifically, associative memory. Such systems should not be designed to literally mimic nature. Rather, we can be guided by nature's mechanisms for experimenting with new information/signal processing steps which are based on coupled biochemical reactions, but are vastly simpler than natural processes, and which will provide tools for the long-term goal of understanding and harnessing nature's information processing paradigm. Our biochemical processes of choice are enzymatic cascades because of their compatibility with physiological processes in vivo and with electronics (e.g., electrodes) in vitro allowing for networking and interfacing of enzyme-catalyzed processes with other chemical and biochemical reactions. In addition to designing and realizing feed-forward loops and other processes, one has to develop approaches to probe their response to external control of the time-dependence of the input(s), by measuring the resulting time-dependence of the output. The goal will be to demonstrate the expected features, for example, the delayed response and stabilizing effect of the feed-forward loops.
Process Design and Economics for Biochemical Conversion of Lignocellul...
Broader source: Energy.gov (indexed) [DOE]
Process Design and Economics for Biochemical Conversion of Lignocellulosic Biomass to Ethanol: Dilute-Acid Pretreatment and Enzymatic Hydrolysis of Corn Stover Process Design and...
NREL 2012 Achievement of Ethanol Cost Targets: Biochemical Ethanol...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
NREL 2012 Achievement of Ethanol Cost Targets: Biochemical Ethanol Fermentation via Dilute-Acid Pretreatment and Enzymatic Hydrolysis of Corn Stover Ling Tao, Dan Schell, Ryan...
Modeling Tomorrow's Biorefinery--the NREL Biochemical Pilot Plant
Not Available
2008-03-01T23:59:59.000Z
Brochure describing the capabilities of NREL's Biochemical Pilot Plant. In this facility, researchers test ideas for creating high-value products from cellulosic biomass.
Biochemical processes for geothermal brine treatment
Premuzic, E.T.; Lin, M.S.; Bohenek, M.; Joshi-Tope, G.; Zhou, W.; Shelenkova, L.; Wilke, R.
1998-08-01T23:59:59.000Z
As part of the DOE Geothermal Energy Program, BNL`s Advanced Biochemical Processes for Geothermal Brines (ABPGB) project is aimed at the development of cost-efficient and environmentally acceptable technologies for the disposal of geothermal wastes. Extensive chemical studies of high and low salinity brines and precipitates have indicated that in addition to trace quantities of regulated substances, e.g., toxic metals such as arsenic and mercury, there are significant concentrations of valuable metals, including gold, silver and platinum. Further chemical and physical studies of the silica product have also shown that the produced silica is a valuable material with commercial potential. A combined biochemical and chemical technology is being developed which (1) solubilizes, separates, and removes environmentally regulated constituents in geothermal precipitates and brines, (2) generates an amorphous silica product which may be used as feedstock for the production of revenue generating materials, (3) recover economically valuable trace metals and salts. Geothermal power resources which utilize low salinity brines and use the Stretford process for hydrogen sulfide abatement generate a contaminated sulfur cake. Combined technology converts such sulfur to a commercial grade sulfur, suitable for agricultural use. The R and D activities at BNL are conducted jointly with industrial parties in an effort focused on field applications.
BIOCHEMICAL PROCESSES FOR GEOTHERMAL BRINE TREATMENT
PREMUZIC,E.T.; LIN,M.S.; BOHENEK,M.; JOSHI-TOPE,G.; ZHOU,W.; SHELENKOVA,L.; WILKE,R.
1998-09-20T23:59:59.000Z
As part of the DOE Geothermal Energy Program, BNL's Advanced Biochemical Processes for Geothermal Brines (ABPGB) project is aimed at the development of cost-efficient and environmentally acceptable technologies for the disposal of geothermal wastes. Extensive chemical studies of high and low salinity brines and precipitates have indicated that in addition to trace quantities of regulated substances, e.g., toxic metals such as arsenic and mercury, there are significant concentrations of valuable metals, including gold, silver and platinum. Further chemical and physical studies of the silica product have also shown that the produced silica is a valuable material with commercial potential. A combined biochemical and chemical technology is being developed which (1) solubilizes, separates, and removes environmentally regulated constituents in geothermal precipitates and brines (2) generates an amorphous silica product which may be used as feedstock for the production of revenue generating materials, (3) recover economically valuable trace metals and salts. Geothermal power resources which utilize low salinity brines and use the Stretford process for hydrogen sulfide abatement generate a contaminated sulfur cake. Combined technology converts such sulfur to a commercial grade sulfur, suitable for agricultural use. The R and D activities at BNL are conducted jointly with industrial parties in an effort focused on field applications.
Ronald F. Fox
2015-03-12T23:59:59.000Z
In this paper, we develop further the theory of thermostated systems along the lines of our earlier paper. Two results are highlighted: 1) in the Markov limit of the contracted description, a least dissipation of Helmholtz free energy principle is established; and 2) a detailed account of the appropriateness of this principle for nano-biology, including the evolution of life, is presented.
Ronald F. Fox
2015-03-11T23:59:59.000Z
In this paper, we develop further the theory of thermostated systems along the lines of our earlier paper. Two results are highlighted: 1) in the Markov limit of the contracted description, a least dissipation of Helmholtz free energy principle is established; and 2) a detailed account of the appropriateness of this principle for nano-biology, including the evolution of life, is presented.
Kachroo, Pushkin
ECE 6444: Optimization Theory: Finite and Infinite Dimensional Systems Fall 2006, 3 credits, CRN and 00 )( xtx = are specified, ft and )( ftx are free. From this general result, show the necessary conditions, when (b) 0t and 00 )( xtx = are specified, ft and )( ftx are also specified (2 points) (c) 0t
Alberto Escalante
2006-07-13T23:59:59.000Z
Using a strongly covariant formalism given by Carter for the deformations dynamics of p-branes in a curved background and a covariant and gauge invariant geometric structure constructed on the corresponding Witten's phase space, we identify the canonical variables for Dirac-Nambu-Goto [DNG] and Gauss-Bonnet [GB] system in string theory. Future extensions of the present results are outlined.
E-Print Network 3.0 - aided systems theory Sample Search Results
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Technologies and Information Sciences 49 AABBSSTTRRAACCTT MA, RUIQI. The Effect of In-Vehicle Automation and Reliability on Driver Situation Summary: , etc. In theory, the...
Few-Nucleon Forces and Systems in Chiral Effective Field Theory
Evgeny Epelbaum
2005-09-14T23:59:59.000Z
We outline the structure of the nuclear force in the framework of chiral effective field theory of QCD and review recent applications to processes involving few nucleons.
Unveiling the hidden structure of complex stochastic biochemical networks
Valleriani, Angelo, E-mail: angelo.valleriani@mpikg.mpg.de [Max Planck Institute of Colloids and Interfaces, Department of Theory and Bio-Systems, 14424 Potsdam (Germany)] [Max Planck Institute of Colloids and Interfaces, Department of Theory and Bio-Systems, 14424 Potsdam (Germany); Li, Xin [Department of Chemistry, Rice University, Houston, Texas 77005 (United States)] [Department of Chemistry, Rice University, Houston, Texas 77005 (United States); Kolomeisky, Anatoly B. [Department of Chemistry and Center for Theoretical Biological Physics, Rice University, Houston, Texas 77005 (United States)] [Department of Chemistry and Center for Theoretical Biological Physics, Rice University, Houston, Texas 77005 (United States)
2014-02-14T23:59:59.000Z
Complex Markov models are widely used and powerful predictive tools to analyze stochastic biochemical processes. However, when the network of states is unknown, it is necessary to extract information from the data to partially build the network and estimate the values of the rates. The short-time behavior of the first-passage time distributions between two states in linear chains has been shown recently to behave as a power of time with an exponent equal to the number of intermediate states. For a general Markov model we derive the complete Taylor expansion of the first-passage time distribution between two arbitrary states. By combining algebraic methods and graph theory approaches it is shown that the first term of the Taylor expansion is determined by the shortest path from the initial state to the final state. When this path is unique, we prove that the coefficient of the first term can be written in terms of the product of the transition rates along the path. It is argued that the application of our results to first-return times may be used to estimate the dependence of rates on external parameters in experimentally measured time distributions.
Chiral effective field theory analysis of hadronic parity violation 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
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.
Sociology: Computational Organization Theory Sociology: Computational Organization Theory
Sadeh, Norman M.
Sociology: Computational Organization Theory Sociology: Computational Organization Theory Kathleen; organization theory; organizational learning; social networks; expert systems Citation: Kathleen Carley, 1994, "Sociology: Computational Organization Theory." Social Science Computer Review, 12(4): 611-624. #12;Sociology
Chjan Lim
2006-08-09T23:59:59.000Z
A family of spin-lattice models are derived as convergent finite dimensional approximations to the rest frame kinetic energy of a barotropic fluid coupled to a massive rotating sphere. In not fixing the angular momentum of the fluid component, there is no Hamiltonian equations of motion of the fluid component of the coupled system. This family is used to formulate a statistical equilibrium model for the energy - relative enstrophy theory of the coupled barotropic fluid - rotating sphere system, known as the spherical model, which because of its microcanonical constraint on relative enstrophy, does not have the low temperature defect of the classical energy - enstrophy theory. This approach differs from previous works and through the quantum - classical mapping between quantum field theory in spatial dimension $d$ and classical statistical mechanics in dimension $d+1,$ provides a new example of Feynman's generalization of the Least Action Principle to problems that do not have a standard Lagrangian or Hamiltonian. A simple mean field theory for this statistical equlibrium model is formulated and solved, providing precise conditions on the planetary spin and relative enstrophy in order for phase transitions to occur at positive and negative critical temperatures, $T_{+}$ and $T_{-}.$
Gunceler, Deniz; Sundararaman, Ravishankar; Schwarz, Kathleen A; Arias, T A
2013-01-01T23:59:59.000Z
Delivering the full benefits of first principles calculations to battery materials demands the development of accurate and computationally-efficient electronic structure methods that incorporate the effects of the electrolyte environment and electrode potential. Realistic electrochemical interfaces containing polar surfaces are beyond the regime of validity of existing continuum solvation theories developed for molecules, due to the presence of significantly stronger electric fields. We present an ab initio theory of the nonlinear dielectric and ionic response of solvent environments within the framework of joint density-functional theory, with precisely the same optimizable parameters as conventional polarizable continuum models. We demonstrate that the resulting nonlinear theory agrees with the standard linear models for organic molecules and metallic surfaces under typical operating conditions. However, we find that the saturation effects in the rotational response of polar solvent molecules, inherent to o...
Multiple capillary biochemical analyzer with barrier member
Dovichi, N.J.; Zhang, J.Z.
1996-10-22T23:59:59.000Z
A multiple capillary biochemical analyzer is disclosed for sequencing DNA and performing other analyses, in which a set of capillaries extends from wells in a microtiter plate into a cuvette. In the cuvette the capillaries are held on fixed closely spaced centers by passing through a sandwich construction having a pair of metal shims which squeeze between them a rubber gasket, forming a leak proof seal for an interior chamber in which the capillary ends are positioned. Sheath fluid enters the chamber and entrains filament sample streams from the capillaries. The filament sample streams, and sheath fluid, flow through aligned holes in a barrier member spaced close to the capillary ends, into a collection chamber having a lower glass window. The filament streams are illuminated above the barrier member by a laser, causing them to fluoresce. The fluorescence is viewed end-on by a CCD camera chip located below the glass window. The arrangement ensures an equal optical path length from all fluorescing spots to the CCD chip and also blocks scattered fluorescence illumination, providing more uniform results and an improved signal-to-noise ratio. 12 figs.
Multiple capillary biochemical analyzer with barrier member
Dovichi, Norman J. (Edmonton, CA); Zhang, Jian Z. (Edmonton, CA)
1996-01-01T23:59:59.000Z
A multiple capillary biochemical analyzer for sequencing DNA and performing other analyses, in which a set of capillaries extends from wells in a microtiter plate into a cuvette. In the cuvette the capillaries are held on fixed closely spaced centers by passing through a sandwich construction having a pair of metal shims which squeeze between them a rubber gasket, forming a leak proof seal for an interior chamber in which the capillary ends are positioned. Sheath fluid enters the chamber and entrains filament sample streams from the capillaries. The filament sample streams, and sheath fluid, flow through aligned holes in a barrier member spaced close to the capillary ends, into a collection chamber having a lower glass window. The filament streams are illuminated above the barrier member by a laser, causing them to fluoresce. The fluorescence is viewed end-on by a CCD camera chip located below the glass window. The arrangement ensures an equal optical path length from all fluorescing spots to the CCD chip and also blocks scattered fluorescence illumination, providing more uniform results and an improved signal to noise ratio.
A numerical study of crack initiation in a bcc iron system based on dynamic bifurcation theory
Li, Xiantao, E-mail: xli@math.psu.edu [Pennsylvania State University, University Park, Pennsylvania 16802 (United States)
2014-10-28T23:59:59.000Z
Crack initiation under dynamic loading conditions is studied under the framework of dynamic bifurcation theory. An atomistic model for BCC iron is considered to explicitly take into account the detailed molecular interactions. To understand the strain-rate dependence of the crack initiation process, we first obtain the bifurcation diagram from a computational procedure using continuation methods. The stability transition associated with a crack initiation, as well as the connection to the bifurcation diagram, is studied by comparing direct numerical results to the dynamic bifurcation theory [R. Haberman, SIAM J. Appl. Math. 37, 69–106 (1979)].
Biochemical changes in speckled trout (Cynoscion nebulosus) preserved with ice
Glover, James Donald
1970-01-01T23:59:59.000Z
BIOCHEMICAL CHANGES IN SPECKLED TROUT (CYNOSCION NEBULOSUS) PRESERVED WITH ICE A Thesis by JAMES DONALD GLOVER Approved as to style and content by: (C irman of Committee) emb ) (Head of Depa tment) (Member ) August 1970 ABSTRACT... Biochemical Changes in Speckled Trout (Cynoscion Nebulosus) Preserved with Ice. (August 1970) James Donald Glover, B. S. , Texas A&M University Directed by: Bryant F. Cobb III One hundred-sixty speckled trout were purchased from retail fish markets...
Kinship Algebra Expert System (KAES): A Software Implementation of a Cultural Theory
Read, Dwight W
2006-01-01T23:59:59.000Z
Mouton. Read / Kinship Algebra Expert System Lowie, R. H. (M. D. (2005). Kinship algebra expert system. RetrievedRead Kinship Algebra Expert Social / Science Computer Review
Not Available
2009-04-01T23:59:59.000Z
January to March, 2009 edition of the National Bioenergy Center's Biochemical Platform Integration Project quarterly newsletter.
Schell, D.
2010-01-01T23:59:59.000Z
October to December, 2009 edition of the National Bioenergy Center's Biochemical Platform Integration Project quarterly newsletter.
Schell, D. J.
2008-12-01T23:59:59.000Z
July to September, 2008 edition of the National Bioenergy Center's Biochemical Platform Integration Project quarterly newsletter.
Schell, D.
2009-10-01T23:59:59.000Z
July to September, 2009 edition of the National Bioenergy Center's Biochemical Platform Integration Project quarterly newsletter.
Schell, D.
2008-01-01T23:59:59.000Z
October to December, 2007 edition of the newsletter of the Biochemical Platform Process Integration project.
Makai Ocean Engineering, Inc. Otec Plume Biochemical Simulation of a 100MW
the Physical and Biochemical Influence of Ocean Thermal Energy Conversion Plant Discharges into their Adjacent
Schell, D.
2009-08-01T23:59:59.000Z
April to June, 2009 edition of the National Bioenergy Center's Biochemical Platform Integration Project quarterly newsletter.
Paris-Sud XI, Université de
there is a strong need of reliability and consistency from modeling, development and life cycle systems. A main and organization from human-machine systems to socio- technical systems especially for safety and life critical methodologies and ergonomics of systems design. Current and future technical developments for enhancing human
EXISTENCE OF RADIAL STATIONARY SOLUTIONS FOR A SYSTEM IN COMBUSTION THEORY
Paris-Sud XI, Université de
on a one step kinetic reaction and our system is obtained by approximating the standard Arrehnius law
What can one learn about Self-Organized Criticality from Dynamical Systems theory ?
Ph. Blanchard; B. Cessac; T. Krueger
1999-12-06T23:59:59.000Z
We develop a dynamical system approach for the Zhang's model of Self-Organized Criticality, for which the dynamics can be described either in terms of Iterated Function Systems, or as a piecewise hyperbolic dynamical system of skew-product type. In this setting we describe the SOC attractor, and discuss its fractal structure. We show how the Lyapunov exponents, the Hausdorff dimensions, and the system size are related to the probability distribution of the avalanche size, via the Ledrappier-Young formula.
Gao, Johnway [Richland, WA; Skeen, Rodney S [Pendleton, OR
2002-05-28T23:59:59.000Z
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.
Automated synthesis of reliable and efficient systems through game theory: a case study
Randour, Mickael
2012-01-01T23:59:59.000Z
Reactive computer systems bear inherent complexity due to continuous interactions with their environment. While this environment often proves to be uncontrollable, we still want to ensure that critical computer systems will not fail, no matter what they face. Examples are legion: railway traffic, power plants, plane navigation systems, etc. Formal verification of a system may ensure that it satisfies a given specification, but only applies to an already existing model of a system. In this work, we address the problem of synthesis: starting from a specification of the desired behavior, we show how to build a suitable system controller that will enforce this specification. In particular, we discuss recent developments of that approach for systems that must ensure Boolean behaviors (e.g., reachability, liveness) along with quantitative requirements over their execution (e.g., never drop out of fuel, ensure a suitable mean response time). We notably illustrate a powerful, practically useable algorithm for the aut...
PRODIAG: Combined expert system/neural network for process fault diagnosis. Volume 1, Theory
Reifman, J.; Wei, T.Y.C.; Vitela, J.E.
1995-09-01T23:59:59.000Z
The function of the PRODIAG code is to diagnose on-line the root cause of a thermal-hydraulic (T-H) system transient with trace back to the identification of the malfunctioning component using the T-H instrumentation signals exclusively. The code methodology is based on the Al techniques of automated reasoning/expert systems (ES) and artificial neural networks (ANN). The research and development objective is to develop a generic code methodology which would be plant- and T-H-system-independent. For the ES part the only plant or T-H system specific code requirements would be implemented through input only and at that only through a Piping and Instrumentation Diagram (PID) database. For the ANN part the only plant or T-H system specific code requirements would be through the ANN training data for normal component characteristics and the same PID database information. PRODIAG would, therefore, be generic and portable from T-H system to T-H system and from plant to plant without requiring any code-related modifications except for the PID database and the ANN training with the normal component characteristics. This would give PRODIAG the generic feature which numerical simulation plant codes such as TRAC or RELAP5 have. As the code is applied to different plants and different T-H systems, only the connectivity information, the operating conditions and the normal component characteristics are changed, and the changes are made entirely through input. Verification and validation of PRODIAG would, be T-H system independent and would be performed only ``once``.
Lynch, Herchel Eugene
1968-01-01T23:59:59.000Z
oi tiie gpprosch Present practices in pred:cting system effectiveness during the initicl concept or formulation phase involves other approaches in addition to the comparison technioue which is a comparison of the new system with prior generic... est ountercd probability d'stributions. 15 ifaintained Systems L'ving orgar'. sms which have died cannot be repaired, but most . qu pmerit can be and us!!ally is; thus, a n a! ype of failure distri" bution may be coucieved. Ihis new type...
Sun, Lili; Srivastava, Rajendra P.; Mock, Theodore J.
2006-01-01T23:59:59.000Z
], artificial intelligence and expert systems [18, 61], data mining [33, 60], financial portfolio management [45], image processing in radiology [10], remote sensing in agriculture [11] and in the ocean [29], and forecasting demand for mobile satellites [28...
The theory of diversity and redundancy in information system security : LDRD final report.
Mayo, Jackson R. (Sandia National Laboratories, Livermore, CA) [Sandia National Laboratories, Livermore, CA; Torgerson, Mark Dolan; Walker, Andrea Mae; Armstrong, Robert C. (Sandia National Laboratories, Livermore, CA) [Sandia National Laboratories, Livermore, CA; Allan, Benjamin A. (Sandia National Laboratories, Livermore, CA) [Sandia National Laboratories, Livermore, CA; Pierson, Lyndon George
2010-10-01T23:59:59.000Z
The goal of this research was to explore first principles associated with mixing of diverse implementations in a redundant fashion to increase the security and/or reliability of information systems. Inspired by basic results in computer science on the undecidable behavior of programs and by previous work on fault tolerance in hardware and software, we have investigated the problem and solution space for addressing potentially unknown and unknowable vulnerabilities via ensembles of implementations. We have obtained theoretical results on the degree of security and reliability benefits from particular diverse system designs, and mapped promising approaches for generating and measuring diversity. We have also empirically studied some vulnerabilities in common implementations of the Linux operating system and demonstrated the potential for diversity to mitigate these vulnerabilities. Our results provide foundational insights for further research on diversity and redundancy approaches for information systems.
Ahmadi, Amir Ali
2008-01-01T23:59:59.000Z
Lyapunov's direct method, which is based on the existence of a scalar function of the state that decreases monotonically along trajectories, still serves as the primary tool for establishing stability of nonlinear systems. ...
Advanced biochemical processes for geothermal brines FY 1998 annual operating plan
NONE
1997-10-01T23:59:59.000Z
As part of the overall Geothermal Energy Research which is aimed at the development of economical geothermal resources production systems, the aim of the Advanced Biochemical Processes for Geothermal Brines (ABPGB) effort is the development of economic and environmentally acceptable methods for disposal of geothermal wastes and conversion of by-products to useful forms. Methods are being developed for dissolution, separation and immobilization of geothermal wastes suitable for disposal, usable in inert construction materials, suitable for reinjection into the reservoir formation, or used for recovery of valuable metals.
Glenn A Roth; Fatih Aydogan
2014-09-01T23:59:59.000Z
This is Part II of two articles describing the details of thermal-hydraulic sys- tem codes. In this second part of the article series, the system code closure relationships (used to model thermal and mechanical non-equilibrium and the coupling of the phases) for the governing equations are discussed and evaluated. These include several thermal and hydraulic models, such as heat transfer coefficients for various flow regimes, two phase pressure correlations, two phase friction correlations, drag coefficients and interfacial models be- tween the fields. These models are often developed from experimental data. The experiment conditions should be understood to evaluate the efficacy of the closure models. Code verification and validation, including Separate Effects Tests (SETs) and Integral effects tests (IETs) is also assessed. It can be shown from the assessments that the test cases cover a significant section of the system code capabilities, but some of the more advanced reactor designs will push the limits of validation for the codes. Lastly, the limitations of the codes are discussed by considering next generation power plants, such as Small Modular Reactors (SMRs), analyz- ing not only existing nuclear power plants, but also next generation nuclear power plants. The nuclear industry is developing new, innovative reactor designs, such as Small Modular Reactors (SMRs), High-Temperature Gas-cooled Reactors (HTGRs) and others. Sub-types of these reactor designs utilize pebbles, prismatic graphite moderators, helical steam generators, in- novative fuel types, and many other design features that may not be fully analyzed by current system codes. This second part completes the series on the comparison and evaluation of the selected reactor system codes by discussing the closure relations, val- idation and limitations. These two articles indicate areas where the models can be improved to adequately address issues with new reactor design and development.
David Y Gao; Ning Ruan; Vittorio Latorre
2014-11-26T23:59:59.000Z
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.
Field theory and weak Euler-Lagrange equation for classical particle-field systems
Qin, Hong [PPPL; Burby, Joshua W [PPPL; Davidson, Ronald C [PPPL
2014-10-01T23:59:59.000Z
It is commonly believed that energy-momentum conservation is the result of space-time symmetry. However, for classical particle-field systems, e.g., Klimontovich-Maxwell and Klimontovich- Poisson systems, such a connection hasn't been formally established. The difficulty is due to the fact that particles and the electromagnetic fields reside on different manifolds. To establish the connection, the standard Euler-Lagrange equation needs to be generalized to a weak form. Using this technique, energy-momentum conservation laws that are difficult to find otherwise can be systematically derived.
{gamma} parameter and Solar System constraint in chameleon-Brans-Dicke theory
Saaidi, Kh.; Mohammadi, A.; Sheikhahmadi, H. [Department of Physics, Faculty of Science, University of Kurdistan, Sanandaj (Iran, Islamic Republic of)
2011-05-15T23:59:59.000Z
The post Newtonian parameter is considered in the chameleon-Brans-Dicke model. In the first step, the general form of this parameter and also effective gravitational constant is obtained. An arbitrary function for f({Phi}), which indicates the coupling between matter and scalar field, is introduced to investigate validity of solar system constraint. It is shown that the chameleon-Brans-Dicke model can satisfy the solar system constraint and gives us an {omega} parameter of order 10{sup 4}, which is in comparable to the constraint which has been indicated in [19].
Interpretation of the Tadpole VV29 Merging Galaxy System using Hydro-Gravitational Theory
Carl H. Gibson; Rudolph E. Schild
2003-05-03T23:59:59.000Z
Hubble Space Telescope (HST/ACS) images of the galaxy merger Tadpole are interpreted using the hydro-gravitational theory of Gibson 1996-2000 (HGT) that predicts galaxy masses within about 100 kpc are dominated by dark halos of planetary mass primordial-fog-particles (PFPs) in dark proto-globular-star-clusters (PGCs). According to our interpretation, stars and young-globular-clusters (YGCs) appear out of the dark as merging galaxy components VV29cdef move through the baryonic-dark-matter halo of the larger galaxy VV29a creating luminous star-wakes. Frozen PFP planets are evaporated by radiation and tidal forces of the intruders. Friction from the gas accelerates an accretional cascade of PFPs to form larger planets, stars and YGCs of the filamentary galaxy VV29b. Star-wakes show that galaxy VV29c, identified as a blue dwarf by radio telescope observations of gas density and velocity (Briggs et al. 2001), with companions VV29def entered the dark halo of the larger VV29a galaxy at a radius 130 kpc and then spiraled in on different tracks toward frictional capture by the VV29a core. A previously dark dwarf galaxy is identified from a Keck spectrographic study showing a VV29c star-wake dense cluster of YGCs aligned to 1 degree in a close straight row (Tran et al. 2003).
Systemic risk in energy derivative markets: a graph-theory analysis
Paris-Sud XI, Université de
. Such a method indeed makes it possible to investigate prices shocks in the physical as well as in the paper markets. In order to understand the underlying prin- ciples and the dynamic behavior of our prices system to identify the most probable path for the transmission of prices shocks. We study the organization
Strategic Structural Reorganization in Multi-agent Systems Inspired by Social Organization Theory
Nematollahi Mahani, Maryamossadat
2012-08-31T23:59:59.000Z
. . . . . . . . . . 53 5.2.3 Organization and Reorganization Models using S-MOISE+ . . . . . . . . . 54 5.3 Evaluation Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 5.4 Experimental Evaluation... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 6.3.2 System Dynamics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 6.4 Organization and Reorganization Models using J-MOISE+ . . . . . . . . . . . . . 72 6.5 Experimental Setup...
Theory for hydrostatic gas journal bearings for micro-electro-mechanical systems
Liu, Lixian, Ph. D. Massachusetts Institute of Technology
2005-01-01T23:59:59.000Z
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 ...
Desheng Li
2010-05-26T23:59:59.000Z
In this paper we first construct smooth Morse-Lyapunov functions of attractors for nonsmooth dynamical systems. Then we prove that all open attractor neighborhoods of an attractor have the same homotopy type. Based on this basic fact we finally introduce the concept of critical group for Morse sets of an attractor and establish Morse inequalities and equations.
Disposal: Science and Theory Disposal: Science and Theory
Benson, Eric R.
Disposal: Science and Theory #12;Disposal: Science and Theory Foaming Options · Compressed Air Foam Systems (CAFS) · Foam Blower · Foam Generator · Nozzle Systems #12;Disposal: Science and Theory Compressed Industry owned response team #12;Disposal: Science and Theory Commercial CAFS for Poultry · Poultry
García-Salcedo, Ricardo; Horta-Rangel, Francisco A; Quiros, Israel; Sanchez-Guzmán, Daniel
2015-01-01T23:59:59.000Z
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.
Schell, D.
2010-04-01T23:59:59.000Z
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.
Ma, Junfen, 1972-
2003-01-01T23:59:59.000Z
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 ...
M. Lapert; R. Tehini; G. Turinici; D. Sugny
2009-05-29T23:59:59.000Z
We consider the optimal control of quantum systems interacting non-linearly with an electromagnetic field. We propose new monotonically convergent algorithms to solve the optimal equations. The monotonic behavior of the algorithm is ensured by a non-standard choice of the cost which is not quadratic in the field. These algorithms can be constructed for pure and mixed-state quantum systems. The efficiency of the method is shown numerically on molecular orientation with a non-linearity of order 3 in the field. Discretizing the amplitude and the phase of the Fourier transform of the optimal field, we show that the optimal solution can be well-approximated by pulses that could be implemented experimentally.
Schell, D. J.
2007-01-01T23:59:59.000Z
Volume 13 of a quarterly newsletter that describes the activities of the National Bioenergy Center's Biochemical Processing Integration Task.
Schell, D.
2008-04-01T23:59:59.000Z
January-March, 2008 edition of the quarterly update for the National Bioenergy Center's Biochemical Platform Integration Project.
Schell, D.
2009-01-01T23:59:59.000Z
October to December, 2008 edition of the National Bioenergy Center?s Biochemical Platform Integration Project quarterly newsletter.
The Theory of Functional Forms of the Consumer Demand System and its Application
Usui, Ikuyasu
2010-01-25T23:59:59.000Z
function U(q) = nY k=1 q#11;kk = q#11;11 q#11;22 q#11;33 #1;#1;#1;q#11;nn , (3) with #11;k > 0 andPnk=1#11;k = 1. Setting up the Lagrangian for this optimiza- 11 tion problem L = U(q) +#21; x#0; nX k=1 pkqk ! (4) = nY k=1 q#11;kk +#21; x#0; nX k=1 pkqk... ......................................... 13 2.1.3 Hicksian Demands ......................................16 2.1.4 Elasticity Relations .....................................18 2.1.5 Curvature .............................................. 28 2.2 Demand System Speci...
Recent results in the theory of the three-nucleon systems
Friar, J.L.
1987-06-01T23:59:59.000Z
This paper concentrates on calculational results obtained by the Los Alamos-Iowa Faddeev group and on related calculations. Most of the interest of this group has centered on the Helium 3 and Hydrogen 3 ground states, including the effects of the Coulomb interactions between the two protons in Helium 3. Recent progress in treating the alpha particle is reported and zero energy n-d and p-d scattering and an improved understanding of the scattering lengths for these systems are also discussed. Simple physical pictures for these results are presented where possible. 54 refs., 9 figs. (DWL)
Application of convolution theory for solving non-linear flow problems: gas flow systems
Mireles, Thomas Joseph
1995-01-01T23:59:59.000Z
. . . . . . . . . . . . 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... of the functions. " By applying this theorem and taking the Laplace transform of the right hand side of Eq. 3. 1 (expressed by Eq. 3. 3), we obtain Eq. 3. 4. Q(ft * fj)(t)) = ft(u) g(u) . where the non-linear transform function is given as g(u) = X(g(t)) . (3...
Veeraraghavan, Srikant; Mazziotti, David A., E-mail: damazz@uchicago.edu [Department of Chemistry and The James Franck Institute, The University of Chicago, Chicago, Illinois 60637 (United States)
2014-03-28T23:59:59.000Z
We present a density matrix approach for computing global solutions of restricted open-shell Hartree-Fock theory, based on semidefinite programming (SDP), that gives upper and lower bounds on the Hartree-Fock energy of quantum systems. While wave function approaches to Hartree-Fock theory yield an upper bound to the Hartree-Fock energy, we derive a semidefinite relaxation of Hartree-Fock theory that yields a rigorous lower bound on the Hartree-Fock energy. We also develop an upper-bound algorithm in which Hartree-Fock theory is cast as a SDP with a nonconvex constraint on the rank of the matrix variable. Equality of the upper- and lower-bound energies guarantees that the computed solution is the globally optimal solution of Hartree-Fock theory. The work extends a previously presented method for closed-shell systems [S. Veeraraghavan and D. A. Mazziotti, Phys. Rev. A 89, 010502–R (2014)]. For strongly correlated systems the SDP approach provides an alternative to the locally optimized Hartree-Fock energies and densities with a certificate of global optimality. Applications are made to the potential energy curves of C{sub 2}, CN, Cr {sub 2}, and NO {sub 2}.
Wu, Wei [Department of Physics and Astronomy and Department of Chemistry, State University of New York at Stony Brook, Stony Brook, New York 11794 (United States); Wang, Jin, E-mail: jin.wang.1@stonybrook.edu [Department of Physics and Astronomy and Department of Chemistry, State University of New York at Stony Brook, Stony Brook, New York 11794 (United States); State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun, China and College of Physics, Jilin University, 130021 Changchun (China)
2014-09-14T23:59:59.000Z
We have established a general non-equilibrium thermodynamic formalism consistently applicable to both spatially homogeneous and, more importantly, spatially inhomogeneous systems, governed by the Langevin and Fokker-Planck stochastic dynamics with multiple state transition mechanisms, using the potential-flux landscape framework as a bridge connecting stochastic dynamics with non-equilibrium thermodynamics. A set of non-equilibrium thermodynamic equations, quantifying the relations of the non-equilibrium entropy, entropy flow, entropy production, and other thermodynamic quantities, together with their specific expressions, is constructed from a set of dynamical decomposition equations associated with the potential-flux landscape framework. The flux velocity plays a pivotal role on both the dynamic and thermodynamic levels. On the dynamic level, it represents a dynamic force breaking detailed balance, entailing the dynamical decomposition equations. On the thermodynamic level, it represents a thermodynamic force generating entropy production, manifested in the non-equilibrium thermodynamic equations. The Ornstein-Uhlenbeck process and more specific examples, the spatial stochastic neuronal model, in particular, are studied to test and illustrate the general theory. This theoretical framework is particularly suitable to study the non-equilibrium (thermo)dynamics of spatially inhomogeneous systems abundant in nature. This paper is the second of a series.
Theory and experiment reveal unexpected calcium profiles in one-dimensional systems
S. L. Mironov
2013-04-30T23:59:59.000Z
Calcium is an ubiquitous second messenger that triggers a plethora of key physiological responses. The events are initiated in micro- or nano-sized compartments and determined by the complex interactions with calcium-binding proteins and mechanisms of calcium clearance. Local calcium increases in the vicinity of single channels represent an essentially non-linear reaction-diffusion problem that have been analysed previously using various linearized approximations. I revisited the problem of stationary patterns that can be generated by the point calcium source in the presence of buffer and obtained new explicit solutions. Main results of the analysis of the calcium buffering are supplemented with pertinent derivations and discussion of respective mathematical problems in Appendices. I show that for small calcium influx the calcium gradients around established around channel lumen have quasi-exponential form. For bigger fluxes, when the buffer is saturated, the model predicts periodic patterns. The transition between the two regimes depend on the capacity of buffer and its mobility. Theoretical predictions were examined using a model one-dimensional system. For sufficiently big fluxes the oscillatory calcium patterns were observed. Theoretical and experimental results are discussed in terms of their possible physiological implications.
DENSE MULTIPHASE FLOW SIMULATION: CONTINUUM MODEL FOR POLY-DISPERSED SYSTEMS USING KINETIC THEORY
Moses Bogere
2011-08-31T23:59:59.000Z
The overall objective of the project was to verify the applicability of the FCMOM approach to the kinetic equations describing the particle flow dynamics. For monodispersed systems the fundamental equation governing the particle flow dynamics is the Boltzmann equation. During the project, the FCMOM was successfully applied to several homogeneous and in-homogeneous problems in different flow regimes, demonstrating that the FCMOM has the potential to be used to solve efficiently the Boltzmann equation. However, some relevant issues still need to be resolved, i.e. the homogeneous cooling problem (inelastic particles cases) and the transition between different regimes. In this report, the results obtained in homogeneous conditions are discussed first. Then a discussion of the validation results for in-homogeneous conditions is provided. And finally, a discussion will be provided about the transition between different regimes. Alongside the work on development of FCMOM approach studies were undertaken in order to provide insights into anisotropy or particles kinetics in riser hydrodynamics. This report includes results of studies of multiphase flow with unequal granular temperatures and analysis of momentum re-distribution in risers due to particle-particle and fluid-particle interactions. The study of multiphase flow with unequal granular temperatures entailed both simulation and experimental studies of two particles sizes in a riser and, a brief discussion of what was accomplished will be provided. And finally, a discussion of the analysis done on momentum re-distribution of gas-particles flow in risers will be provided. In particular a discussion of the remaining work needed in order to improve accuracy and predictability of riser hydrodynamics based on two-fluid models and how they can be used to model segregation in risers.
. Building Simulation Modeling Environments Using Systems Theory and Software Architecture Principles Hessam the relationships between the realm of (i) model building and simulation execution in conjunction with (ii) softwareTo Be Presented at the Advanced Simulation Technology Symposium (ASTC), Washington DC, April 2004
Bell, Alexis T.
with H2O2 releases HOOÂ· free radicals and generates V(IV) species, which are capable of generating HOA Density Functional Theory Study of the Mechanism of Free Radical Generation in the System for HOOÂ· generation. It is also found that species containing two pca ligands and an H2O2 molecule do
Biochemical Production of Ethanol from Corn Stover: 2007 State of
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels DataEnergyDepartmentWindConversion Biochemical Conversion This area
Lucien Hardy
2013-03-06T23:59:59.000Z
We discuss how to reconstruct quantum theory from operational postulates. In particular, the following postulates are consistent only with for classical probability theory and quantum theory. Logical Sharpness: There is a one-to-one map between pure states and maximal effects such that we get unit probability. This maximal effect does not give probability equal to one for any other pure state. Information Locality: A maximal measurement is effected on a composite system if we perform maximal measurements on each of the components. Tomographic Locality: The state of a composite system can be determined from the statistics collected by making measurements on the components. Permutability: There exists a reversible transformation on any system effecting any given permutation of any given maximal set of distinguishable states for that system. Sturdiness: Filters are non-flattening. To single out quantum theory we need only add any requirement that is inconsistent with classical probability theory and consistent with quantum theory.
Introduction to spherical field theory
Dean Lee
1998-11-12T23:59:59.000Z
Spherical field theory is a new non-perturbative method for studying quantum field theories. It uses the spherical partial wave expansion to reduce a general d-dimensional Euclidean field theory into a set of coupled one-dimensional systems. The coupled one-dimensional systems are then converted to partial differential equations and solved numerically. We demonstrate the methods of spherical field theory by analyzing Euclidean phi^4 theory in two dimensions.
Mehdi Farzanehpour; I. V. Tokatly
2015-06-29T23:59:59.000Z
We use analytic (current) density-potential maps of time-dependent (current) density functional theory (TD(C)DFT) to inverse engineer analytically solvable time-dependent quantum problems. In this approach the driving potential (the control signal) and the corresponding solution of the Schr\\"odinger equation are parametrized analytically in terms of the basic TD(C)DFT observables. We describe the general reconstruction strategy and illustrate it with a number of explicit examples. First we consider the real space one-particle dynamics driven by a time-dependent electromagnetic field and recover, from the general TDDFT reconstruction formulas, the known exact solution for a driven oscillator with a time-dependent frequency. Then we use analytic maps of the lattice TD(C)DFT to control quantum dynamics in a discrete space. As a first example we construct a time-dependent potential which generates prescribed dynamics on a tight-binding chain. Then our method is applied to the dynamics of spin-1/2 driven by a time dependent magnetic field. We design an analytic control pulse that transfers the system from the ground to excited state and vice versa. This pulse generates the spin flip thus operating as a quantum NOT gate.
Disposal: Science and Theory Disposal: Science and Theory
Benson, Eric R.
Disposal: Science and Theory #12;Disposal: Science and Theory Brief History of Foam 2004 Bud and foam 2009 No advantage for gas #12;Disposal: Science and Theory What is foam? · What is fire fighting system. #12;Disposal: Science and Theory Foam Composition · Foam can include Mixture of surfactants
How Minds Work Global Workspace Theory
Memphis, University of
1 How Minds Work Global Workspace Theory Stan Franklin Computer Science Division & Institute for Intelligent Systems The University of Memphis #12;February 3, 2005 HMW: Global Workspace Theory 2 Global Workspace Theory Â· A Theory of Consciousness Â· A Theory of Cognition Â· A Theory of Mind #12;February 3
Olivier Minazzoli; Aurélien Hees
2013-08-13T23:59:59.000Z
In this communication, we present a class of Brans-Dicke-like theories with a universal coupling between the scalar field and the matter Lagrangian. We show this class of theories naturally exhibits a decoupling mechanism between the scalar field and matter. As a consequence, this coupling leads to almost the same phenomenology as general relativity in the Solar System: the trajectories of massive bodies and the light propagation differ from general relativity only at the second post-Newtonian order. Deviations from general relativity are beyond present detection capabilities. However, this class of theories predicts a deviation of the gravitational redshift at a level detectable by the future ACES and STE/QUEST missions.
Maxwell's demon in biochemical signal transduction with feedback loop
Sosuke Ito; Takahiro Sagawa
2014-11-13T23:59:59.000Z
Signal transduction in living cells is vital to maintain life itself, where information transfer in noisy environment plays a significant role. In a rather different context, thermodynamics of information processing by "Maxwell's demon" has been developed recently, leading to a unified theory of thermodynamics and information. Here we combine these two streams of researches, and show that the second law of thermodynamics with informational reveals the fundamental limit of the robustness of signal transduction against environmental fluctuations. Especially, we found that the degree of robustness is quantitatively characterized by an informational quantity called transfer entropy. Our information-thermodynamic approach is applicable to biological communication inside cells, where there is not any explicit channel coding in contrast to the case of artificial communication. Our result would open up a novel biophysical approach to understand information processing in living systems on the basis of the fundamental information-thermodynamic link.
Maxwell's demon in biochemical signal transduction with feedback loop
Sosuke Ito; Takahiro Sagawa
2015-04-15T23:59:59.000Z
Signal transduction in living cells is vital to maintain life itself, where information transfer in noisy environment plays a significant role. In a rather different context, the recent intensive researches of "Maxwell's demon" - a feedback controller that utilizes information of individual molecules - has led to a unified theory of information and thermodynamics. Here we combine these two streams of researches, and show that the second law of thermodynamics with information reveals the fundamental limit of the robustness of signal transduction against environmental fluctuations. Especially, we found that the degree of robustness is quantitatively characterized by an informational quantity called transfer entropy. Our information-thermodynamic approach is applicable to biological communication inside cells, in which there is no explicit channel coding in contrast to artificial communication. Our result would open up a novel biophysical approach to understand information processing in living systems on the basis of the fundamental information-thermodynamics link.
An overview of system modeling and identification Gerard Favier
Paris-Sud XI, Université de
useful for various application areas including chemical and biochemical processes (distillation columns developed for designing model- based control systems. More generally, parameter estimation is at the heart
Biochemical Platform Analysis Presentation for BETO 2015 Project Peer Review
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The FutureCommentsEnergyand SustainedBio-Oil Deployment in the HomeBiochemical
Phoha, Vir V.
in the realization of battery-free RFID sensor tags such as tags with energy harvesting power source (eIEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 57, NO. 5, MAY 2009 1303 A Chipless RFID
Biochemical Production of Ethanol from Corn Stover: 2008 State of Technology Model
Humbird, D.; Aden, A.
2009-08-01T23:59:59.000Z
An update to the FY 2007 assessment of the state of technical research progress toward biochemical process goals, quantified in terms of Minimum Ethanol Selling Price.
Biochemical Production of Ethanol from Corn Stover: 2007 State of Technology Model
Aden, A.
2008-05-01T23:59:59.000Z
An update to the FY 2005 assessment of the state of technical research progress toward biochemical process goals. This assessment contains research results from 2006 and 2007.
E-Print Network 3.0 - anhydrase ix biochemical Sample Search...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (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....
Structure and Biochemical Activities of Escherichia coli MgsA
Page, Asher N.; George, Nicholas P.; Marceau, Aimee H.; Cox, Michael M.; Keck, James L. (UW)
2012-02-27T23:59:59.000Z
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.
Closed-form solutions and free energy of hard-spin mean-field theory of a fully frustrated system
Kabakcioglu, A.; Nihat Berker, A.; Cemal Yalabik, M. (Department of Physics, Bilkent University, Bilkent, Ankara 06533 (Turkey) Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States))
1994-04-01T23:59:59.000Z
Closed-form solutions of the hard-spin mean-field theory equations for the antiferromagnetic Ising model on a triangular lattice, with or without an external field [ital H], are obtained, showing the lack of order for [ital H]=0 and very good agreement with Monte Carlo data for the onset of order for nonzero [ital H]. A free energy calculation is developed, within the context of hard-spin mean-field theory, distinguishing between metastable solutions and true thermodynamic equilibrium.
Giulio Bonelli; Kazunobu Maruyoshi; Alessandro Tanzini
2011-12-15T23:59:59.000Z
We study N=2 supersymmetric SU(2) gauge theories coupled to non-Lagrangian superconformal field theories induced by compactifying the six dimensional A_1 (2,0) theory on Riemann surfaces with irregular punctures. These are naturally associated to Hitchin systems with wild ramification whose spectral curves provide the relevant Seiberg-Witten geometries. We propose that the prepotential of these gauge theories on the Omega-background can be obtained from the corresponding irregular conformal blocks on the Riemann surfaces via a generalization of the coherent state construction to the case of higher order singularities.
Song, Xueyu
density functional theory. The equilibrium interfacial density profiles and interfacial free energies were of density profile. We found that the average interfacial free energy is about 0.78, which is in reasonable of the crystal-melt interface is the interfacial free energy. Experimentally, this quantity can be extracted from
Optimal adaptive control of (bio)chemical reactors: past, present and future
Bastin, Georges
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 presentedTeCÂÂBioprocess Technology and Control, Department of Chemical Engineering, Katholieke Universiteit Leuven, W. de Croylaan 46
Francalanza, Adrian
The Danger Theory and Its Application to Artificial Immune Systems Proceedings of the 1st Internat Conference on ARtificial Immune Systems (ICARIS-2002), pp 141-148, Canterbury, UK, 2002. Uwe Aickelin School in the Artificial Immune Systems world. A number of potential application areas are then used to provide a framing
Boolean Theory laws proof Number Theory Character Theory
Hehner, Eric C.R.
Review Boolean Theory laws proof Number Theory Character Theory Bunches Sets Strings Lists for loop 1/109 #12;Review Boolean Theory laws proof Number Theory Character Theory Bunches Sets Strings with exit for loop 2/109 #12;Review Boolean Theory laws proof Number Theory Character Theory Bunches Sets
Broader source: Energy.gov [DOE]
Modeling the Physical and Biochemical Influence of Ocean Thermal Energy Conversion Plant Discharges into their Adjacent Waters
Song, Young-Ho; Lazauskas, Rimantas; Park, Tae-Sun [Department of Physics, Duke University, Durham, North Carolina 27708 (United States); IPHC, IN2P3-CNRS/Universite Louis Pasteur BP 28, F-67037 Strasbourg Cedex 2 (France); Department of Physics and BAERI, Sungkyunkwan University, Suwon 440-746 (Korea, Republic of)
2009-06-15T23:59:59.000Z
M1 properties, comprising magnetic moments and radiative capture of thermal neutron observables, are studied in two- and three-nucleon systems. We use meson exchange current derived up to N{sup 3}LO using heavy baryon chiral perturbation theory a la Weinberg. Calculations have been performed for several qualitatively different realistic nuclear Hamiltonians, which permits us to analyze model dependence of our results. Our results are found to be strongly correlated with the effective range parameters such as binding energies and the scattering lengths. Taking into account such correlations, the results are in good agreement with the experimental data with small model dependence.
Topos theory and `neo-realist' quantum theory
Andreas Doering
2007-12-24T23:59:59.000Z
Topos theory, a branch of category theory, has been proposed as mathematical basis for the formulation of physical theories. In this article, we give a brief introduction to this approach, emphasising the logical aspects. Each topos serves as a `mathematical universe' with an internal logic, which is used to assign truth-values to all propositions about a physical system. We show in detail how this works for (algebraic) quantum theory.
Coulomb interactions within Halo Effective Field Theory
Renato Higa
2007-11-30T23:59:59.000Z
I present preliminary results of effective field theory applied to nuclear cluster systems, where Coulomb interactions play a significant role.
Not Available
2012-04-01T23:59:59.000Z
Winter 2011-2012 issue of the National Bioenergy Center Biochemical Platform Integration Project quarterly update. Issue topics: 34th Symposium on Biotechnology for Fuels and Chemicals; feasibility of NIR spectroscopy-based rapid feedstock reactive screening; demonstrating integrated pilot-scale biomass conversion. The Biochemical Process Integration Task focuses on integrating the processing steps in enzyme-based lignocellulose conversion technology. This project supports the U.S. Department of Energy's efforts to foster development, demonstration, and deployment of 'biochemical platform' biorefineries that economically produce ethanol or other fuels, as well as commodity sugars and a variety of other chemical products, from renewable lignocellulosic biomass.
Advanced biochemical processes for geothermal brines: Current developments
Premuzic, E.T.; Lin, M.S.; Bohenek, M. [Brookhaven National Lab., Upton, NY (United States). Energy Science and Technology Div.; Bajsarowicz, V. [CET Environmental Services, Inc., Richmond, CA (United States); McCloud, M. [C.E. Holt/California Energy, Pasadena, CA (United States)
1997-07-07T23:59:59.000Z
A research program at Brookhaven National Laboratory (BNL) which deals with the development and application of processes for the treatment of geothermal brines and sludges has led to the identification and design of cost-efficient and environmentally friendly treatment methodology. Initially the primary goal of the processing was to convert geothermal wastes into disposable materials whose chemical composition would satisfy environmental regulations. An expansion of the r and D effort identified a combination of biochemical and chemical processes which became the basis for the development of a technology for the treatment of geothermal brines and sludges. The new technology satisfies environmental regulatory requirements and concurrently converts the geothermal brines and sludges into commercially promising products. Because the chemical composition of geothermal wastes depends on the type of the resource, the emerging technology has to be flexible so that it can be readily modified to suit the needs of a particular type of resource. Recent conceptional designs for the processing of hypersaline and low salinity brines and sludges will be discussed.
Induced biochemical interactions in immature and biodegraded heavy crude oils
Premuzic, E.T.; Lin, M.S.; Bohenek, M.; Joshi-Tope, G.; Shelenkova, L.; Zhou, W.M.
1998-11-01T23:59:59.000Z
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.
INDUCED BIOCHEMICAL INTERACTIONS IN IMMATURE AND BIODEGRADED HEAVY CRUDE OILS
PREMUZIC,E.T.; LIN,M.S.; BOHENEK,M.; JOSHI-TOPE,G.; SHELENKOVA,L.; ZHOU,W.M.
1998-10-27T23:59:59.000Z
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.
Boolean Theory laws proof Number Theory Character Theory
Hehner, Eric C.R.
construction induction Recursive Program Definition construction induction Theory Design and Implementation Definition construction induction Theory Design and Implementation data theory program theory Data Recursive Data Definition construction induction Recursive Program Definition construction induction Theory
Camey, Sarah
2013-08-31T23:59:59.000Z
Background: Despite an abundance of soy interventions, the effect of soy isoflavones prior to curative treatment for localized prostate cancer on biochemical recurrence has not been evaluated. Objective: To determine if short-term supplementation...
National Bioenergy Center--Biochemical Platform Integration Project: Quarterly Update, Fall 2010
Schell, D.
2010-12-01T23:59:59.000Z
Fall 2010 edition of the National Bioenergy Center's Biochemical Platform Integration Project quarterly newsletter. Issue topics: rapid analysis models for compositional analysis of intermediate process streams; engineered arabinose-fermenting Zymomonas mobilis strain.
Yuan, Jinchao
2007-01-01T23:59:59.000Z
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 ...
Hjelmfelt, A.; Harding, R.H.; Tsujimoto, K.K.; Ross, J. (Department of Chemistry, Stanford University, Stanford, California 94305 (US))
1990-03-15T23:59:59.000Z
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 methane system 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 methane systems confirm the phase bistability. The additional complex behavior of bistability due to jump phenomena is seen only in calculations in the methane system. In both types of bistability a hysteresis loop is formed as we vary the form of the periodic perturbation. In the methane system, we find period doubling to chaos occuring on one branch of the hysteresis loop while the other branch remains periodic. The methane system 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.
Exploring the Pinhole: Biochemical and Genetic Studies on the Prototype Pinholin, S21
Pang, Ting
2011-08-08T23:59:59.000Z
EXPLORING THE PINHOLE: BIOCHEMICAL AND GENETIC STUDIES ON THE PROTOTYPE PINHOLIN, S21 A Dissertation by TING PANG Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of DOCTOR OF PHILOSOPHY May 2010 Major Subject: Biochemistry EXPLORING THE PINHOLE: BIOCHEMICAL AND GENETIC STUDIES ON THE PROTOTYPE PINHOLIN, S21 A Dissertation by TING PANG Submitted to the Office of Graduate...
2015-03-12T23:59:59.000Z
Cellar theory. A. Eremenko. March 12, 2015. The temperature on the Earth surface at a given place experiences roughly speaking periodic fluctuation, daily and ...
Quantum theory Bohrification: topos theory and quantum theory
Spitters, Bas
Quantum theory Bohrification: topos theory and quantum theory Bas Spitters Domains XI, 9/9/2014 Bas Spitters Bohrification: topos theory and quantum theory #12;Quantum theory Point-free Topology The axiom, Krein-Millman, Alaoglu, Hahn-Banach, Gelfand, Zariski, ... Bas Spitters Bohrification: topos theory
Complex higher order derivative theories
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
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.
Lan, Chenyang
2005-08-29T23:59:59.000Z
Considered in this thesis is multi-input multi-output (MIMO) systems with non-minimum phase (NMP) zeros and unstable poles where some of the unstable poles are located to the right of the NMP zeros. In the single-input single-output (SISO) case...
Mario G. Silveirinha
2014-06-09T23:59:59.000Z
Here, we develop a comprehensive quantum theory for the phenomenon of quantum friction. Based on a theory of macroscopic quantum electrodynamics for unstable systems, we calculate the quantum expectation of the friction force, and link the friction effect to the emergence of system instabilities related to the Cherenkov effect. These instabilities may occur due to the hybridization of particular guided modes supported by the individual moving bodies, and selection rules for the interacting modes are derived. It is proven that the quantum friction effect can take place even when the interacting bodies are lossless and made of nondispersive dielectrics.
Shuanhu Qi; Hans Behringer; Friederike Schmid
2013-09-26T23:59:59.000Z
We develop a multiscale hybrid scheme for simulations of soft condensed matter systems, which allows one to treat the system at the particle level in selected regions of space, and at the continuum level elsewhere. It is derived systematically from an underlying particle-based model by field theoretic methods. Particles in different representation regions can switch representations on the fly, controlled by a spatially varying tuning function. As a test case, the hybrid scheme is applied to simulate colloid-polymer composites with high resolution regions close to the colloids. The hybrid simulations are significantly faster than reference simulations of a pure particle-based model, and the results are in good agreement.
Sethna, James P.
2008-01-01T23:59:59.000Z
: Predictions from a mesoscale theory of continuum dislocation dynamics S. Limkumnerda,Ã, J.P. Sethnab a Zernike developed mesoscale continuum theory of dislocation dynamics, we derive three predictions about plasticity
Quantum Field Theory and Representation Theory
Woit, Peter
Quantum Field Theory and Representation Theory Peter Woit woit@math.columbia.edu Department of Mathematics Columbia University Quantum Field Theory and Representation Theory p.1 #12;Outline of the talk · Quantum Mechanics and Representation Theory: Some History Quantum Field Theory and Representation Theory
Liu, M.; Claridge, D. E.
1998-01-01T23:59:59.000Z
, is the fan power consumption, cfm is the air flow rate, and cfr&, is the designed air flow rate. In the base cases, the cold deck temperature is 55°F regardless of the ambient temperature. The hot deck temperature varies from 1 10°F to 75°F when... the ambient temperature increases from 40°F to 75OF. When the ambient temperature is lower than 40°F, the hot deck temperature remains at 1 10°F. Figure 5: Cold and Hot Deck Temperature Versus the Ambient Temperature for Base Case or Normal VAV System...
DemaziÃ¨re, Christophe
Comparative study of 2-group P1 and diffusion theories for the calculation of the neutron noise of the neutron flux around its mean value, is calculated in 2-group P1 and diffusion theories for a 2-region slab reactor using Green's function technique. The applicability of diffusion theory for different types
Deloach, Scott A.
The AAAI-04 Workshop on Agent Organizations: Theory and Practice. July 25-29, 2004, San Jose work. Related Work Computational organization theory uses mathematical and computational techniques are not exclusive to computational organization theory, results from the field are illuminating. Specifically
Smooth Field Theories and Homotopy Field Theories
Wilder, Alan Cameron
2011-01-01T23:59:59.000Z
1 . . . . . . . . 4 Categories of Field Theories 4.1 Functorto super symmetric field theories. CRM Proceedings and0-dimensional super symmetric field theories. preprint 2008.
On Conformal Field Theory and Number Theory
Huang, An
2011-01-01T23:59:59.000Z
Frontiers in Number Theory, Physics, and Ge- ometry II. (Witten, Quantum Field Theory, Crassmannians, and AlgebraicJ. Polchinski, String Theory, Vol. 1, Cambridge Univ.
Topics in low-dimensional field theory
Crescimanno, M.J.
1991-04-30T23:59:59.000Z
Conformal field theory is a natural tool for understanding two- dimensional critical systems. This work presents results in the lagrangian approach to conformal field theory. The first sections are chiefly about a particular class of field theories called coset constructions and the last part is an exposition of the connection between two-dimensional conformal theory and a three-dimensional gauge theory whose lagrangian is the Chern-Simons density.
Reachability Analysis of Stochastic Hybrid Systems: A Biodiesel Production System
Koutsoukos, Xenofon D.
Reachability Analysis of Stochastic Hybrid Systems: A Biodiesel Production System Derek Riley problem because it provides a formal framework to analyze complex systems. Biodiesel production is a realistic biochemical process that can be modeled and analyzed using SHS methods. Analysis of a biodiesel
Magnetic Backgrounds and Noncommutative Field Theory
Richard J. Szabo
2004-02-09T23:59:59.000Z
This paper is a rudimentary introduction, geared at non-specialists, to how noncommutative field theories arise in physics and their applications to string theory, particle physics and condensed matter systems.
Bevir, Mark
2013-01-01T23:59:59.000Z
Marsh, eds. , The State: Theory and Issues. Basingstoke, UK:Passion,” Administra- tive Theory & Praxis 18 (1996), 97–?Public Administration Theory,” Administrative Theory &
Shabram, Megan; Boley, Aaron C. [Department of Astronomy, University of Florida, 211 Bryant Space Center, Gainesville, FL 32611 (United States)] [Department of Astronomy, University of Florida, 211 Bryant Space Center, Gainesville, FL 32611 (United States)
2013-04-10T23:59:59.000Z
Using radiation hydrodynamics simulations, we explore the evolution of circumplanetary disks around wide-orbit proto-gas giants. At large distances from the star ({approx}100 AU), gravitational instability followed by disk fragmentation can form low-mass substellar companions (massive gas giants and/or brown dwarfs) that are likely to host large disks. We examine the initial evolution of these subdisks and their role in regulating the growth of their substellar companions, as well as explore consequences of their interactions with circumstellar material. We find that subdisks that form in the context of GIs evolve quickly from a very massive state. Long-term accretion rates from the subdisk onto the proto-gas giant reach {approx}0.3 Jupiter masses kyr{sup -1}. We also find consistency with previous simulations, demonstrating that subdisks are truncated at {approx}1/3 of the companion's Hill radius and are thick, with (h/r) of {approx}> 0.2. The thickness of subdisks draws to question the use of thin-disk approximations for understanding the behavior of subdisks, and the morphology of subdisks has implications for the formation and extent of satellite systems. These subdisks create heating events in otherwise cold regions of the circumstellar disk and serve as planet formation beacons that can be detected by instruments such as ALMA.
Canonical density matrix perturbation theory
Niklasson, Anders M N; Rubensson, Emanuel H; Rudberg, Elias
2015-01-01T23:59:59.000Z
Density matrix perturbation theory [Niklasson and Challacombe, Phys. Rev. Lett. 92, 193001 (2004)] is generalized to canonical (NVT) free energy ensembles in tight-binding, Hartree-Fock or Kohn-Sham density functional theory. The canonical density matrix perturbation theory can be used to calculate temperature dependent response properties from the coupled perturbed self-consistent field equations as in density functional perturbation theory. The method is well suited to take advantage of sparse matrix algebra to achieve linear scaling complexity in the computational cost as a function of system size for sufficiently large non-metallic materials and metals at high temperatures.
Noncommutative Quantum Field Theories
H. O. Girotti
2003-03-19T23:59:59.000Z
We start by reviewing the formulation of noncommutative quantum mechanics as a constrained system. Then, we address to the problem of field theories defined on a noncommutative space-time manifold. The Moyal product is introduced and the appearance of the UV/IR mechanism is exemplified. The emphasis is on finding and analyzing noncommutative quantum field theories which are renormalizable and free of nonintegrable infrared singularities. In this last connection we give a detailed discussion of the quantization of the noncommutative Wess-Zumino model as well as of its low energy behavior.
Wedgeworth, John Bertus
1985-01-01T23:59:59.000Z
Committee; Dr. C. J. Glover This research presents the first application of equation-ofwtate solution theories to the binary snd ternary light scattering data Three different equation-of-state solution theories were used. These were the Flory... and composition is needed to predict the thermodynamic properties at various conditions. The limiting factor in the application of EOS solution theories is the sparse amount of data on the interaction parameters as well as the complexity of the equations...
Eur. J. Biochem. 200,223-236 (1991) 001429569100530Y
by the environment of the system; they can act as external regulators by communicating changes in the environment we use the medium of control analysis to re- assess the concept of metabolic regulation, specifically
Xue, H. T.; Tang, F. L., E-mail: tfl03@mails.tsinghua.edu.cn [State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Department of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050 (China); Science and Technology on Surface Engineering Laboratory, Lanzhou Institute of Physics, Lanzhou 730000 (China); Lu, W. J.; Li, X. K.; Zhang, Y. [State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Department of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050 (China); Feng, Y. D. [Science and Technology on Surface Engineering Laboratory, Lanzhou Institute of Physics, Lanzhou 730000 (China)
2014-08-07T23:59:59.000Z
The phase diagram of the CuInSe{sub 2}-CuGaSe{sub 2} pseudobinary system was determined using a combination of special quasirandom structure approach, ab initio density functional theory calculations, and thermodynamic modelling. It is shown that the CuIn{sub 1?x}Ga{sub x}Se{sub 2} solution phase has a tendency to phase separation at low temperature. The calculated consolute temperature is 485?K. It is found that both the binodal and spinodal curves are significantly asymmetric and on both curves there are a local maximum and a local minimum, which have not been reported in the previous studies. Our phase diagram can well explain the finding that the inhomogeneity of CuIn{sub 0.25}Ga{sub 0.75}Se{sub 2} is higher than that of CuIn{sub 0.75}Ga{sub 0.25}Se{sub 2} at the same temperature, while the previous phase diagrams cannot. Hence, our phase diagram should be more reliable and applicable.
3USDA Forest Service Gen.Tech.Rep. PSW-GTR-166. 1998. Biochemical Reactions of Ozone in Plants1
Standiford, Richard B.
3USDA Forest Service Gen.Tech.Rep. PSW-GTR-166. 1998. Biochemical Reactions of Ozone in Plants1 Abstract Plants react biochemically to ozone in three phases: with constitutive chemicals in the apoplastic, plant reactions with ozone result in constitutive molecules such as the ozonolysis of ethylene
Changes in the Mechanical and Biochemical Properties of Aortic Tissue due to Cold Storage
Zhang, Katherine Yanhang
Changes in the Mechanical and Biochemical Properties of Aortic Tissue due to Cold Storage Ming Background. Temporary cold storage is a common procedure for preserving tissues for a short time be- fore; collagen; mechan- ical properties; arteries; cold storage; soft tissue; mechanical testing; vascular
Schell, D.
2010-07-01T23:59:59.000Z
April-June, 2010 edition of the National Bioenergy Center's Biochemical Platform Integration Project quarterly newsletter. Issue topics: understanding performance of alternative process configurations for producing ethanol from biomass; investigating Karl Fischer Titration for measuring water content of pretreated biomass slurries.
155:427 CHEMICAL & BIOCHEMICAL ENGINEERING DESIGN AND ECONOMICS I FALL 2014 (3 credits)
Muzzio, Fernando J.
of the steps involved in the design and economic evaluation of chemical and biochemical processes. We elaborate and economic evaluation of their project forms their major task during the Spring semester design course (155, optimization and economic evaluation: planning, cost estimation, fixed capital investments, working capital
Volume 6(2): 068-074 (2014) -068 J Microb Biochem Technol
Gu, Tingyue
2014-01-01T23:59:59.000Z
are lacking on anaerobic corrosion by acid producing bacteria (APB) that undergo anaerobic fermentation the possibility of very high MIC pitting corrosion rates due to free organic acids (represented by acetic acid of Acid Producing Bacteria Causing Fast Pitting Bioc`orrosion. J Microb Biochem Technol 6: 067-073. doi:10
Not Available
2011-09-01T23:59:59.000Z
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.
Schell, D. J.
2011-04-01T23:59:59.000Z
Spring 2011 edition of the National Bioenergy Center's Biochemical Platform Integration Project quarterly newsletter. Issue topics: 33rd Symposium on Biotechnology for Fuels and Chemicals program sessions and special topic sessions; assessment of waste water treatment needs; and an update on new arabinose-to-ethanol fermenting Zymomonas mobilis strains.
Wilamowski, Bogdan Maciej
is that the method presented does not require the analytical details describing the plant dynamics available. I conditions and unknown plant dynamics. In this paper, an analytic approach towards the calculation@ieee.org X.Yu@cqu.edu.au Abstract Â Biochemical processes often display a complicated dynamic behavior
National Bioenergy Center - Biochemical Platform Integration Project: Quarterly Update, Winter 2010
Schell, D.
2011-02-01T23:59:59.000Z
Winter 2011 edition of the National Bioenergy Center's Biochemical Platform Integration Project quarterly newsletter. Issue topics: 33rd Symposium on Biotechnology for Fuels and Chemicals program topic areas; results from reactive membrane extraction of inhibitors from dilute-acid pretreated corn stover; list of 2010 task publications.
A Biochemical Ocean State Estimate in the Southern1 Ocean Gas Exchange Experiment2
Haine, Thomas W. N.
of the oceanic31 carbon pool. It influences light penetration with consequences for primary productivity1 A Biochemical Ocean State Estimate in the Southern1 Ocean Gas Exchange Experiment2 S. Dwivedi1 , T. W. N. Haine2 and C. E. Del Castillo3 3 1 Department of Atmospheric and Ocean Sciences, University
Eur. J. Biochem. 78, 585-598 (1977) Binding of Modified Adenine Nucleotides
Govindjee
Eur. J. Biochem. 78, 585-598 (1977) Binding of Modified Adenine Nucleotides to Isolated Coupling) 1. Fluorescent nucleotides (1,N6-ethenoadenosine diphosphate and triphosphate, EADP and EATP)replace the natural nucleotides rather efficiently (65- 85%) in several chloroplast reactions (ADP inhibition
Biochemical Engineering Journal 89 (2014) 2127 Contents lists available at ScienceDirect
Raghavan, Srinivasa
Direct Biochemical Engineering Journal journal homepage: www.elsevier.com/locate/bej Regular article Tyrosinase: Biofabrication Caffeic acid Chitosan Electrodeposition Redox Tyrosinase a b s t r a c t Physics and chemistry and function. Here, we describe one such biofabrication methodology, the use of tyrosinase to graft phenolics
AN INTEGRATED LUNG-ON-A-CHIP MICROFLUIDIC PLATFORM WITH REAL-TIME BIOCHEMICAL SENSING
Kassegne, Samuel Kinde
AN INTEGRATED LUNG-ON-A-CHIP MICROFLUIDIC PLATFORM WITH REAL-TIME BIOCHEMICAL SENSING, without finding it. Lucius Annaeus Seneca #12;v ABSTRACT OF THE THESIS An Integrated Lung for detection. In this research, we replicate the Lung-on- a-Chip platform with a cystic fibrosis cell line
Final Technical Report Modeling the Physical and Biochemical Influence of Ocean
Influence of Ocean Thermal Energy Conversion Plant Discharges into their Adjacent Waters DOE AWARD NO. DE sustainably with acceptably low biological impact. Ocean Thermal Energy Conversion (OTEC) uses large flowsFinal Technical Report Modeling the Physical and Biochemical Influence of Ocean Thermal Energy
Piard, Veronique D.
1994-01-01T23:59:59.000Z
between the concept of entropy/mutual information of information theory and mean squared error (MSE) estimation theory with respect to an N-link discretetime communication system. This research analyzes and develops mathematically this correspondence...
Systems theory of Smad signaling
D. C. Clarke; M. D. Betterton; X. Liu
2006-03-22T23:59:59.000Z
Transforming Growth Factor-beta (TGF-beta) signalling is an important regulator of cellular growth and differentiation. The principal intracellular mediators of TGF-beta signalling are the Smad proteins, which upon TGF-beta stimulation accumulate in the nucleus and regulate transcription of target genes. To investigate the mechanisms of Smad nuclear accumulation, we developed a simple mathematical model of canonical Smad signalling. The model was built using both published data and our experimentally determined cellular Smad concentrations (isoforms 2, 3, and 4). We found in mink lung epithelial cells that Smad2 (8.5-12 x 10^4 molecules/cell) was present in similar amounts to Smad4 (9.3-12 x 10^4 molecules/cell), while both were in excess of Smad3 (1.1-2.0 x 10^4 molecules/cell). Variation of the model parameters and statistical analysis showed that Smad nuclear accumulation is most sensitive to parameters affecting the rates of RSmad phosphorylation and dephosphorylation and Smad complex formation/dissociation in the nucleus. Deleting Smad4 from the model revealed that rate-limiting phospho-R-Smad dephosphorylation could be an important mechanism for Smad nuclear accumulation. Furthermore, we observed that binding factors constitutively localised to the nucleus do not efficiently mediate Smad nuclear accumulation if dephosphorylation is rapid. We therefore conclude that an imbalance in the rates of R-Smad phosphorylation and dephosphorylation is likely an important mechanism of Smad nuclear accumulation during TGF-beta signalling.
Names and Binding in Type Theory
Schöpp, Ulrich
Names and name-binding are useful concepts in the theory and practice of formal systems. In this thesis we study them in the context of dependent type theory. We propose a novel dependent type theory with primitives for the explicit handling...
Theory and Advanced Scientific Presentation to
Theory and Advanced Scientific Computing Presentation to Dr. Walt Polansky Acting Director, MICS Laboratory August 29, 2002 #12;PPPL THEORY PROGRAM Has Well-Defined Target & Approach · TARGET --- RELIABLE systems (longer-term impact) #12;PPPL THEORY/ADVANCED SCIENTIFIC COMPUTING PROGRAM Emphasizes
Mathematical niche theory Mathematical niche theory
Meszéna, Géza
Mathematical niche theory Mathematical niche theory G´eza Mesz´ena1 Gy¨orgy Barab´as2 KalleUniversity of Turku MMEE 2011, Groningen #12;Mathematical niche theory Outline 1 Introduction 2 Core theory 3 Ways of niche segragation 4 Controversies #12;Mathematical niche theory Introduction Why are there so
Craik, Charles S.
Biochemical Journal Immediate Publication. Published on 03 Oct 2014 as manuscript BJ20140809 with prior permission and as allowed by law. © 2014 The Authors Journal compilation © 2014 Biochemical Society #12;Biochemical Journal Immediate Publication. Published on 03 Oct 2014 as manuscript BJ20140809
Bevir, Mark
2013-01-01T23:59:59.000Z
Management and Organization Theory: From Panopticon toand covering both organization theory and changing patternsTrust in Organizations: Frontiers of Theory and Research (
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Theory and Software Home People Science Highlights Publications Seminars & Meetings Opportunities Advisory Committee Theory and Software Group (X-ray Science Division) The Theory...
Vukmirovic, Nenad
2010-01-01T23:59:59.000Z
Petersilka, Density Functional Theory (Springer, New York,Quantum Dots: Theory Nenad Vukmirovi´ and Lin-Wang Wang cdensity functional theory; electronic structure; empirical
Smooth Field Theories and Homotopy Field Theories
Wilder, Alan Cameron
2011-01-01T23:59:59.000Z
CHAPTER 3. FIELD THEORIES Definition 3.2.1. A smooth fielda ’top down’ definition of field theories. Taking as ourin the following. Definition A field theory is a symmetric
Metabolic Futile Cycles and Their Functions: A Systems Analysis of Energy and Control
Hong Qian; Daniel A. Beard
2006-06-14T23:59:59.000Z
It has long been hypothesized that futile cycles in cellular metabolism are involved in the regulation of biochemical pathways. Following the work of Newsholme and Crabtree, we develop a quantitative theory for this idea based on open-system thermodynamics and metabolic control analysis. It is shown that the {\\it stoichiometric sensitivity} of an intermediary metabolite concentration with respect to changes in steady-state flux is governed by the effective equilibrium constant of the intermediate formation, and the equilibrium can be regulated by a futile cycle. The direction of the shift in the effective equilibrium constant depends on the direction of operation of the futile cycle. High stoichiometric sensitivity corresponds to ultrasensitivity of an intermediate concentration to net flow through a pathway; low stoichiometric sensitivity corresponds to super-robustness of concentration with respect to changes in flux. Both cases potentially play important roles in metabolic regulation. Futile cycles actively shift the effective equilibrium by expending energy; the magnitude of changes in effective equilibria and sensitivities is a function of the amount of energy used by a futile cycle. This proposed mechanism for control by futile cycles works remarkably similarly to kinetic proofreading in biosynthesis. The sensitivity of the system is also intimately related to the rate of concentration fluctuations of intermediate metabolites. The possibly different roles of the two major mechanisms for cellular biochemical regulation, namely reversible chemical modifications via futile cycles and shifting equilibrium by macromolecular binding, are discussed.
Dittrich, Peter
2005-01-01T23:59:59.000Z
Reference: Dittrich, P., P. Speroni di Fenizio (2005), Chemical Organization Theory, arXiv:q-bio.MN/0501016 Chemical organization theory: Towards a theory of con- structive dynamical systems Peter Dittrich. The theory consists of two parts. The first part introduces the concept of a chemical organization
MBI Biorefinery: Corn to Biomass, Ethanol to Biochemicals and Biomaterials
None
2006-02-17T23:59:59.000Z
The project is a continuation of DOE-funded work (FY02 and FY03) that has focused on the development of the ammonia fiber explosion (AFEX) pretreatment technology, fermentation production of succinic acid and new processes and products to enhance dry mill profitability. The primary objective for work beginning in April 2004 and ending in November 2005 is focus on the key issues related to the: (1) design, costing and construction plan for a pilot AFEX pretreatment system, formation of a stakeholder development team to assist in the planning and design of a biorefinery pilot plant, continued evaluation of corn fractionation technologies, corn oil extraction, AFEX treatment of corn fiber/DDGs; (2) development of a process to fractionate AFEX-treated corn fiber and corn stover--cellulose and hemicellulose fractionation and sugar recovery; and (3) development of a scalable batch succinic acid production process at 500 L at or below $.42/lb, a laboratory scale fed-batch process for succinic acid production at or below $.40/lb, a recovery process for succinic acid that reduces the cost of succinic acid by $.02/lb and the development of an acid tolerant succinic acid production strain at lab scale (last objective not to be completed during this project time period).
Biochemical and physical factors affecting color characteristics of selected bovine muscles
McKenna, David Richard
2004-09-30T23:59:59.000Z
for (K/S)572/(K/S)525 values of steaks from 19 beef muscles over 5 days of retail display ........................................................21 3. Least squares means for objective color measurements of 19 beef muscles .......24 4. Least... squares means for (K/S)610/(K/S)525 values of steaks from 19 beef muscles over 5 days of retail display ........................................................27 5. Correlation coefficients of biochemical, physical, and objective color measurements...
Biochemical changes in the proteins of sorghum grain during moisture reconstitution
Billings, Toby Jackson
1972-01-01T23:59:59.000Z
MICROORGANISM INHABITING SORGHUM GRAIN AFTER RECONSTITUTION Medium Growth Acid Gas MR VP Nitrate Reduction Mannose yes yes no Glucose yes yes no Sucrose yes no no Gal actos e yes yes no Mannitol Starch Maltose yes yes yes no no yes...BIOCHEMICAL CHANGES IN THE PROTEINS OF SORGHUM GRAIN DURING MOISTURE RECONSTITUTION A Thesis by TOBY JACKSON BILLINGS Submitted to the Graduate College of the Texas A&M University in partial fulfillment of the requirement for the degree...
Fernandes, Denise [C.I.M.A., University of Algarve, F.C.M.A., Campus de Gambelas, 8005-139-Faro (Portugal); Department of Environmental Chemistry, IIQAB-CSIC, Jordi Girona 18, 08034-Barcelona (Spain); Porte, Cinta [Department of Environmental Chemistry, IIQAB-CSIC, Jordi Girona 18, 08034-Barcelona (Spain)]. E-mail: cpvqam@cid.csic.es; Bebianno, Maria Joao [C.I.M.A., University of Algarve, F.C.M.A., Campus de Gambelas, 8005-139-Faro (Portugal)
2007-02-15T23:59:59.000Z
Cultured and wild sea bass (Dicentrarchus labrax) from the Arade Estuary were sampled in summer and winter and the degree of exposure to metals and polycyclic aromatic hydrocarbons (PAHs) assessed, together with some biochemical responses against those and other pollutants. The highest levels of copper (up to 997 {mu}g g{sup -1} dry weight) and cadmium (up to 4.22 {mu}g g{sup -1} dry weight) were detected in the liver and kidney of cultured specimens, whereas the highest exposure to PAHs was observed in wild fish. Significant alterations in some biochemical markers were detected and associated to pollutant exposure. Thus, metallothionein concentrations were higher in the tissues of cultured fish and positively correlated with metal residues. The activity 7-ethoxyresorufin O-deethylase ranged from 28 pmol/min/mg protein in cultured fish to 83 pmol/min/mg protein in wild fish collected near a marina area. Cultured fish and wild fish from the marina area had depressed acetylcholinesterase in muscle tissue and a parasitic infection in the gonads. The obtained results support the usefulness of the combined use of chemical and biochemical markers to assess the impact of anthropogenic pollutants in both wild and cultured fish.
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Anand, M.; Rajagopal, K.; Rajagopal, K. R.
2003-01-01T23:59:59.000Z
Multiple interacting mechanisms control the formation and dissolution of clots to maintain blood in a state of delicate balance. In addition to a myriad of biochemical reactions, rheological factors also play a crucial role in modulating the response of blood to external stimuli. To date, a comprehensive model for clot formation and dissolution, that takes into account the biochemical, medical and rheological factors, has not been put into place, the existing models emphasizing either one or the other of the factors. In this paper, after discussing the various biochemical, physiologic and rheological factors at some length, we develop a modelmore »for clot formation and dissolution that incorporates many of the relevant crucial factors that have a bearing on the problem. The model, though just a first step towards understanding a complex phenomenon, goes further than previous models in integrating the biochemical, physiologic and rheological factors that come into play.« less
A proposed gravitodynamic theory
T. Chang
1997-03-18T23:59:59.000Z
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.
Walsh, Timothy Francis; Reese, Garth M.; Bhardwaj, Manoj Kumar
2011-11-01T23:59:59.000Z
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.
Morog, Joseph V
1981-01-01T23:59:59.000Z
General systems theory provides a conceptual framework for the integration of knowledge from a wide variety of specialized fields. Systems theory serves to synthesize, reconcile, and integrate knowledge making it possible ...
ON THE THREE AXIOMS OF GENERAL DESIGN THEORY Makoto Kikuchi
Kikuchi, Makoto
form is overcame in their theory, but we can still observe some sign of the survival of the paradox. WeON THE THREE AXIOMS OF GENERAL DESIGN THEORY Makoto Kikuchi Department of Computer and Systems Yoshikawa's General Design Theory is an axiomatic theory of design in which design is formulated and dis
Estimation techniques for large-scale turbulent fluid systems
Colburn, Christopher Hughes
2011-01-01T23:59:59.000Z
R. 1972 Linear Optimal Control Systems. Wiley- Intersciencetime optimal control theory applied to the linear system (time optimal control theory applied to the linear system (
Equivalence Relations in Set Theory, Computation Theory and Complexity Theory
Equivalence Relations in Set Theory, Computation Theory and Complexity Theory Denable Equivalence-preserving transformations Unitary equivalence of unitary operators Conformal equivalence of Riemann surfaces These are analytic (1 1 with parameters) equivalence relations on Polish spaces (think of the reals) #12;Equivalence
Hamilton-Jacobi theory in multisymplectic classical field theories
Manuel de León; Pedro Daniel Prieto-Martínez; Narciso Román-Roy; Silvia Vilariño
2015-04-08T23:59:59.000Z
The geometric framework for the Hamilton-Jacobi theory developed in previous works is extended for multisymplectic first-order classical field theories. The Hamilton-Jacobi problem is stated for the Lagrangian and the Hamiltonian formalisms of these theories as a particular case of a more general problem, and the classical Hamilton-Jacobi equation for field theories is recovered from this geometrical setting. Particular and complete solutions to these problems are defined and characterized in several equivalent ways in both formalisms, and the equivalence between them is proved. The use of distributions in jet bundles that represent the solutions to the field equations is the fundamental tool in this formulation. Some examples are analyzed and, in particular, the Hamilton-Jacobi equation for non-autonomous mechanical systems is obtained as a special case of our results.
Theory of electromagnetic fields
Wolski, Andrzej
2011-01-01T23:59:59.000Z
We discuss the theory of electromagnetic fields, with an emphasis on aspects relevant to radiofrequency systems in particle accelerators. We begin by reviewing Maxwell's equations and their physical significance. We show that in free space, there are solutions to Maxwell's equations representing the propagation of electromagnetic fields as waves. We introduce electromagnetic potentials, and show how they can be used to simplify the calculation of the fields in the presence of sources. We derive Poynting's theorem, which leads to expressions for the energy density and energy flux in an electromagnetic field. We discuss the properties of electromagnetic waves in cavities, waveguides and transmission lines.
Dmitriy Palatnik
2005-08-12T23:59:59.000Z
Suggested modification of the Einstein-Maxwell system, such that Maxwell equations become non-gauge and nonlinear. The theory is based on assumption that observable (i.e., felt by particles) metric is $ {\\tilde{g}}_{ab} = g_{ab} - l^2{A}_a{A}_b$, where $g_{ab}$ is metric (found from Einstein equations), $A_a$ is electromagnetic potential, and $l$ is fundamental constant of the theory. Specific model of the mass and charge densities of a fundamental particle is considered. As a result, one obtains solutions corresponding to quantized electrical charge with spectrum $q_{n} = {{2n}\\over3}e$ and $q'_{n} = -{(2n+1)\\over3}e$, where $n = 0, 1, 2, ...$ Theory predicts Coulomb interaction between electrical charges and masses. Namely, if ($m, e$) and ($m',e'$) describe masses and electrical charges of two particles respectively, then energy of interaction (in non-relativistic limit) is $V(r) = [ee' - kmm' - \\sqrt k(em' + e'm)]/r$. It follows, then, that the Earth's mass, $M_E$, contributes negative electrical charge, $Q_E = - \\sqrt k M_E$, which explains why primary cosmic rays consist mainly of positively charged particles. One may attribute the fairweather electric field at the Earth's surface to the charge $Q_E$.
Composite Photon Theory Versus Elementary Photon Theory
Walton A. Perkins
2015-03-02T23:59:59.000Z
The purpose of this paper is to show that the composite photon theory measures up well against the Standard Model's elementary photon theory. This is done by comparing the two theories area by area. Although the predictions of quantum electrodynamics are in excellent agreement with experiment (as in the anomalous magnetic moment of the electron), there are some problems, such as the difficulty in describing the electromagnetic field with the four-component vector potential because the photon has only two polarization states. In most areas the two theories give similar results, so it is impossible to rule out the composite photon theory. Pryce's arguments in 1938 against a composite photon theory are shown to be invalid or irrelevant. Recently, it has been realized that in the composite theory the antiphoton does not interact with matter because it is formed of a neutrino and an antineutrino with the wrong helicity. This leads to experimental tests that can determine which theory is correct.
Transgression field theory for interacting topological insulators
Aç?k, Özgür
2013-01-01T23:59:59.000Z
We consider effective topological field theories of quantum Hall systems and time-reversal invariant topological insulators that are Chern-Simons and BF field theories. The edge states of these systems are related to the gauge invariance of the effective actions. For the edge states at the interface of two topological insulators, transgression field theory is proposed as a gauge invariant effective action. Transgression actions of Chern-Simons theories for (2+1)D and (4+1)D and BF theories for (3+1)D are constructed. By using transgression actions, the edge states are written in terms of the bulk connections of effective Chern-Simons and BF theories.
Altafini, Claudio
for Advanced Studies), Trieste. e-mail: altafini@sissa.it Aim: Bilinear Systems are an important class
Appropriating Theory Bonnie Nardi
Nardi, Bonnie
Appropriating Theory Bonnie Nardi forthcoming in D. Sonnenwald, ed. Theory Development in Information: Reflecting on the Process. Austin in this volume concern the development of new theory. I want to take a slightly
Motorcycle Emissions System Multireflection Optics for non-
Denver, University of
Motorcycle Emissions System Multireflection Optics for non- contact measurement of small emissions-2580 FAX 2587 · e-mail dstedman @ DU.edu · www.feat.biochem.du.edu #12;End view of six-pass optical system #12;#12;#12;#12;Side view of ramp and optics #12;#12;#12;Motorcycle Emissions · Measurement of 90cc
Center for Information & Systems Engineering
Goldberg, Bennett
imaging, video surveillance, modern energy systems and bioinformatics. With a proven track record of scholarship, funding and industry collaboration, CISE faculty bring vast research experience to addressing, information theory, control theory, queuing theory, simulation, and applied probability and statistics. Master
Setser, Jeremy Wayne
2014-01-01T23:59:59.000Z
Chemical reactions allow biological systems to function. The majority of these biochemical reactions occur due to the work of protein catalysts known as enzymes. These biocatalysts are often thought of as pre-formed, static ...
Zhan, Wei
2005-08-29T23:59:59.000Z
We have investigated and implemented several general strategies in the development of microfluidics-based chemical/biochemical sensing systems. The research in this dissertation covers the immobilization of biological reagents inside microfluidic...
Chen, Guan-Jong, 1981-
2004-01-01T23:59:59.000Z
Design and fabrication of a microfluidics system capable of generating reproducible and controlled micro-biochemical environments that can be used as a diagnostic assay and microreactor is important. Here, a simple technique ...
Techno-Economic Analysis of Bioconversion of Methane into Biofuel and Biochemical (Poster)
Fei, Q.; Tao, L.; Pienkos, P .T.; Guarnieri, M.; Palou-Rivera, I.
2014-10-01T23:59:59.000Z
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.
Generalized Probability Theories: What determines the structure of quantum theory?
Peter Janotta; Haye Hinrichsen
2014-08-13T23:59:59.000Z
The framework of generalized probabilistic theories is a powerful tool for studying the foundations of quantum physics. It provides the basis for a variety of recent findings that significantly improve our understanding of the rich physical structure of quantum theory. This review paper tries to present the framework and recent results to a broader readership in an accessible manner. To achieve this, we follow a constructive approach. Starting from few basic physically motivated assumptions we show how a given set of observations can be manifested in an operational theory. Furthermore, we characterize consistency conditions limiting the range of possible extensions. In this framework classical and quantum theory appear as special cases, and the aim is to understand what distinguishes quantum mechanics as the fundamental theory realized in nature. It turns out non-classical features of single systems can equivalently result from higher dimensional classical theories that have been restricted. Entanglement and non-locality, however, are shown to be genuine non-classical features.
Quantum Field Theory & Gravity
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Quantum Field Theory & Gravity Quantum Field Theory & Gravity Understanding discoveries at the Energy, Intensity, and Cosmic Frontiers Get Expertise Rajan Gupta (505) 667-7664...
BNL | CFN: Theory & Computation
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Theory and Computation Contact: Mark Hybertsen Advances in theory, numerical algorithms and computational capabilities have enabled an unprecedented opportunity for fundamental...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
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)...
Reformulating and Reconstructing Quantum Theory
Lucien Hardy
2011-08-25T23:59:59.000Z
We provide a reformulation of finite dimensional quantum theory in the circuit framework in terms of mathematical axioms, and a reconstruction of quantum theory from operational postulates. The mathematical axioms for quantum theory are the following: [Axiom 1] Operations correspond to operators. [Axiom 2] Every complete set of physical operators corresponds to a complete set of operations. The following operational postulates are shown to be equivalent to these mathematical axioms: [P1] Sharpness. Associated with any given pure state is a unique maximal effect giving probability equal to one. This maximal effect does not give probability equal to one for any other pure state. [P2] Information locality. A maximal measurement on a composite system is effected if we perform maximal measurements on each of the components. [P3] Tomographic locality. The state of a composite system can be determined from the statistics collected by making measurements on the components. [P4] Compound permutability. There exists a compound reversible transformation on any system effecting any given permutation of any given maximal set of distinguishable states for that system. [P5] Sturdiness. Filters are non-flattening. Hence, from these postulates we can reconstruct all the usual features of quantum theory: States are represented by positive operators, transformations by completely positive trace non-increasing maps, and effects by positive operators. The Born rule (i.e. the trace rule) for calculating probabilitieso follows. A more detailed abstract is provided in the paper.
Extention cohomological fields theories and noncommutative Frobenius manifolds
S. M. Natanzon
2005-10-04T23:59:59.000Z
We construct some extension ({\\it Stable Field Theory}) of Cohomological Field Theory. The Stable Field Theory is a system of homomorphisms to some vector spaces generated by spheres and disks with punctures. It is described by a formal tensor series, satisfying to some system of "differential equations". In points of convergence the tensor series generate special noncommutative analogues of Frobenius algebras, describing 'Open-Closed' Topological Field Theories.
Washington Taylor
2006-06-28T23:59:59.000Z
This elementary introduction to string field theory highlights the features and the limitations of this approach to quantum gravity as it is currently understood. String field theory is a formulation of string theory as a field theory in space-time with an infinite number of massive fields. Although existing constructions of string field theory require expanding around a fixed choice of space-time background, the theory is in principle background-independent, in the sense that different backgrounds can be realized as different field configurations in the theory. String field theory is the only string formalism developed so far which, in principle, has the potential to systematically address questions involving multiple asymptotically distinct string backgrounds. Thus, although it is not yet well defined as a quantum theory, string field theory may eventually be helpful for understanding questions related to cosmology in string theory.
Couzin, Iain D.
for cooperative control of engineered multi-agent systems. For instance, a continuous model of particles moving at constant speed in the plane with steering control (heading rate) designed to couple the dynamics Abstract-- We present a low-dimensional, continuous model of a multi-agent system motivated by simulation
Dobson, Ian
technology of flexible ac transmission [9], [ll], [19]. Detailed systems studies of the effect of these devices on the power system use network models consisting of linear RLC elements, ideal thyristors and periodic sources. Applications include high power thyristor controlled reactor and bridge rectifier
Zhang, Shuzhong
Introduction Theory of CAMNS Practical realization of CAMNS Simulation results & Conclusions Blind Separation of Non-negative Sources using Convex Analysis: Theory and Methods Wing-Kin (Ken) Ma Dept Blind Separation of Non-negative Sources using Convex Analysis: Theory and #12;Introduction Theory
Introduction Classical Field Theory
Baer, Christian
Introduction Classical Field Theory Locally Covariant Quantum Field Theory Renormalization Time evolution Conclusions and outlook Locality and Algebraic Structures in Field Theory Klaus Fredenhagen IIÂ¨utsch and Pedro Lauridsen Ribeiro) Klaus Fredenhagen Locality and Algebraic Structures in Field Theory #12
Introduction to Information Theory
Belohlavek, Radim
Introduction to Information Theory and Its Applications Radim BelohlÂ´avek Dept. Computer Science providing introduction to Information Theory. Radim BelohlÂ´avek, Introduction to Information Theory and Its Applications 1 #12;Information Theory: What and Why Â· information: one of key terms in our society
V.3K(1)-Local Homotopy Theory, Iwasawa Theory
V.3K(1)-Local Homotopy Theory, Iwasawa Theory and Algebraic K-Theory Stephen A. Mitchell* 3.3 K(1)-local Homotopy Theory............................................................. 965 -Adic K-Theory ................................................................. 968 K(1)-Localization
Complex biological and bio-inspired systems
Ecke, Robert E [Los Alamos National Laboratory
2009-01-01T23:59:59.000Z
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.
Ghirardi, M.; Svedruzic, D.
2013-07-01T23:59:59.000Z
The proposed research attempted to identify novel biochemical catalysts, catalyst support materials, high-efficiency electron transfer agents between catalyst active sites and electrodes, and solid-phase electrolytes in order to maximize the current density of biochemical fuel cells that utilize various alcohols as substrates.
Gleeson, Joseph G.
Biochemical Journal Immediate Publication. Published on 23 Nov 2010 as manuscript BJ20101691 with prior permission and as allowed by law. © 2010 The Authors Journal compilation © 2010 Portland Press Limited #12;Biochemical Journal Immediate Publication. Published on 23 Nov 2010 as manuscript BJ20101691
Bret, A.; Gremillet, L.; Benisti, D. [ETSI Industriales, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain and Instituto de Investigaciones Energeticas y Aplicaciones Industriales, Campus Universitario de Ciudad Real, 13071 Ciudad Real (Spain); CEA, DAM, DIF, F-91297 Arpajon (France)
2010-03-15T23:59:59.000Z
Following a recent Letter by Bret et al. [Phys. Rev. Lett. 100, 205008 (2008)], we present a detailed report of the entire unstable k spectrum of a relativistic collisionless beam-plasma system within a fully kinetic framework. In contrast to a number of previously published studies, our linear analysis makes use of smooth momentum distribution functions of the Maxwell-Juettner form. The three competing classes of instabilities, namely, two-stream, filamentation, and oblique modes, are dealt with in a unified manner, no approximation being made regarding the beam-plasma densities, temperatures, and drift energies. We investigate the hierarchy between the competing modes, paying particular attention to the relatively poorly known quasielectrostatic oblique modes in the regime where they govern the system. The properties of the fastest growing oblique modes are examined in terms of the system parameters and compared to those of the dominant two-stream and filamentation modes.
Phelps, Michael E.
2009-09-01T23:59:59.000Z
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.
Physico-chemical and Bio-chemical Controls on Soil C Saturation Behavior
Six, Johan; Plante, Alain
2011-06-02T23:59:59.000Z
In this project, we tested through a multitude of lab and field experiments the concept of soil C stabilization and determined metrics for the level of C saturation across soils and soil organic matter fractions. The basic premise of the soil C saturation concept is that there is a maximum amount of C that can be stabilized within a soil, even when C input is further increased. In a first analysis, our results showed that linear regression models do not adequately predict maximal organic C stabilization by fine soil particles. Soil physical and chemical properties associated with soil clay mineralogy, such as specific surface area and organic C loading, should be incorporated into models for predicting maximal organic C stabilization. In a second analysis, we found significantly greater maximal C stabilization in the microaggregate-protected versus the non-microaggregate protected mineral fractions, which provides independent validation that microaggregation plays an important role in increasing the protection and stabilization of soil C leading to greater total soil C accumulation in these pools. In a third study, our results question the role of biochemical preference in mineral C stabilization and of the chemical recalcitrance of specific plant-derived compounds in non-protected soil C accumulation. Because C biochemical composition of slowly turning over mineral protected C pools does not change with C saturation, input C composition is unlikely to affect long-term C stabilization. Rather, C saturation and stabilization in soil is controlled only by the quantity of C input to the soil and the physical and chemical protection mechanisms at play in long-term C stabilization. In conclusion, we have further corroborated the concept of soil C saturation and elucidated several mechanisms underlying this soil C saturation.
Feasibility of Organizations -A Refinement of Chemical Organization Theory
Hinze, Thomas
Feasibility of Organizations - A Refinement of Chemical Organization Theory with Application to P a theorem providing a criteria for an unfeasible organization. This is a refinement of organization theory organization. Key words: reaction networks, constructive dynamical systems, chem- ical organization theory
Chapter 1. Systems. 1.1. On Line. In this introductory section we will pose no exercises, but instead, will detail. how to use Maple to solve problems in linear ...
Scott, John D.
2012-01-01T23:59:59.000Z
210 Biochemical Society Transactions (2012) Volume 40, part 1 PKA phosphorylation of the small heat The small heat-shock protein Hsp20 (heat-shock protein 20), also known as HspB6, has been shown to protect infarcts, and improved recovery of contractile performance during the reperfusion phase, compared with wild
Eur. J. Biochem. 85, 529-534 (1978) X-Ray and Neutron Small-Angle Scattering Studies
1978-01-01T23:59:59.000Z
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
Paris-Sud XI, Université de
Micromorphological and (bio)chemical organic matter changes in a formerly cutover peat bog : Le. In order to moniter peat reaccumulation and hence long-term carbon sequestration in peatlands which have ([1]). Among these indicators, it has previously been shown that physico-chemical properties of peat
Bazant, Martin Z.
energy storage (EES) systems with high energy and power density will require the development of a full breakthroughs. Although chemical energy storage (batteries) and ECs share common components such as electrodes the research directions for each are presented separately. Chemical Energy Storage Storage of electrical charge
Generalized Quantum Theory and Mathematical Foundations of Quantum Field Theory
Maroun, Michael Anthony
2013-01-01T23:59:59.000Z
The Unique Status of Condensed Matter Theory . . . . . . . .of a Satisfactory Theory . . . . . . . . . . . . BasicThe Generalized Quantum Theory The Postulates and Philosophy
Tom Banks
1999-11-10T23:59:59.000Z
This is a series of lectures on M Theory for cosmologists. After summarizing some of the main properties of M Theory and its dualities I show how it can be used to address various fundamental and phenomenological issues in cosmology.
Marciano, W.J.
1984-12-01T23:59:59.000Z
The present state of the art in elementary particle theory is reviewed. Topics include quantum electrodynamics, weak interactions, electroweak unification, quantum chromodynamics, and grand unified theories. 113 references. (WHK)
Covariant Noncommutative Field Theory
Estrada-Jimenez, S. [Licenciaturas en Fisica y en Matematicas, Facultad de Ingenieria, Universidad Autonoma de Chiapas Calle 4a Ote. Nte. 1428, Tuxtla Gutierrez, Chiapas (Mexico); Garcia-Compean, H. [Departamento de Fisica, Centro de Investigacion y de Estudios Avanzados del IPN P.O. Box 14-740, 07000 Mexico D.F., Mexico and Centro de Investigacion y de Estudios Avanzados del IPN, Unidad Monterrey Via del Conocimiento 201, Parque de Investigacion e Innovacion Tecnologica (PIIT) Autopista nueva al Aeropuerto km 9.5, Lote 1, Manzana 29, cp. 66600 Apodaca Nuevo Leon (Mexico); Obregon, O. [Instituto de Fisica de la Universidad de Guanajuato P.O. Box E-143, 37150 Leon Gto. (Mexico); Ramirez, C. [Facultad de Ciencias Fisico Matematicas, Universidad Autonoma de Puebla, P.O. Box 1364, 72000 Puebla (Mexico)
2008-07-02T23:59:59.000Z
The covariant approach to noncommutative field and gauge theories is revisited. In the process the formalism is applied to field theories invariant under diffeomorphisms. Local differentiable forms are defined in this context. The lagrangian and hamiltonian formalism is consistently introduced.
Henderson, Leah
2010-01-01T23:59:59.000Z
This thesis consists of three papers on the nature of scientific theories and inference. In many cases, scientific theories can be regarded as organized into hierarchies, with higher levels sometimes called 'paradigms', ...
Toward a Theory of Information Processing Sinan Sinanovic and Don H. Johnson
theory and statistical signal processing. This preliminary theory com- plements classic information, by acting on signals, process information. We use information-theoretic distance measures, the Kullback a system's output and input quantifies the system's informationprocessing properties. Using this approach
Topological insulators and superconductors from string theory
Ryu, Shinsei; Takayanagi, Tadashi [Department of Physics, University of California, Berkeley, California 94720 (United States); Institute for the Physics and Mathematics of the Universe (IPMU), University of Tokyo, Kashiwa, Chiba 277-8582 (Japan)
2010-10-15T23:59:59.000Z
Topological insulators and superconductors in different spatial dimensions and with different discrete symmetries have been fully classified recently, revealing a periodic structure for the pattern of possible types of topological insulators and superconductors, both in terms of spatial dimensions and in terms of symmetry classes. It was proposed that K theory is behind the periodicity. On the other hand, D-branes, a solitonic object in string theory, are also known to be classified by K theory. In this paper, by inspecting low-energy effective field theories realized by two parallel D-branes, we establish a one-to-one correspondence between the K-theory classification of topological insulators/superconductors and D-brane charges. In addition, the string theory realization of topological insulators and superconductors comes naturally with gauge interactions, and the Wess-Zumino term of the D-branes gives rise to a gauge field theory of topological nature, such as ones with the Chern-Simons term or the {theta} term in various dimensions. This sheds light on topological insulators and superconductors beyond noninteracting systems, and the underlying topological field theory description thereof. In particular, our string theory realization includes the honeycomb lattice Kitaev model in two spatial dimensions, and its higher-dimensional extensions. Increasing the number of D-branes naturally leads to a realization of topological insulators and superconductors in terms of holography (AdS/CFT).
Topological Insulators and Superconductors from String Theory
Shinsei Ryu; Tadashi Takayanagi
2010-08-01T23:59:59.000Z
Topological insulators and superconductors in different spatial dimensions and with different discrete symmetries have been fully classified recently, revealing a periodic structure for the pattern of possible types of topological insulators and supercondutors, both in terms of spatial dimensions and in terms of symmetry classes. It was proposed that K-theory is behind the periodicity. On the other hand, D-branes, a solitonic object in string theory, are also known to be classified by K-theory. In this paper, by inspecting low-energy effective field theories realized by two parallel D-branes, we establish a one-to-one correspondence between the K-theory classification of topological insulators/superconductors and D-brane charges. In addition, the string theory realization of topological insulators and superconductors comes naturally with gauge interactions, and the Wess-Zumino term of the D-branes gives rise to a gauge field theory of topological nature, such as ones with the Chern-Simons term or the $\\theta$-term in various dimensions. This sheds light on topological insulators and superconductors beyond non-interacting systems, and the underlying topological field theory description thereof. In particular, our string theory realization includes the honeycomb lattice Kitaev model in two spatial dimensions, and its higher-dimensional extensions. Increasing the number of D-branes naturally leads to a realization of topological insulators and superconductors in terms of holography (AdS/CFT).
Theorizing Practice and Practicing Theory
Feldman, Martha S; Orlikowski, Wanda J
2011-01-01T23:59:59.000Z
Practice and Practicing Theory Organization Science 22(5),Practice and Practicing Theory Organization Science 22(5),Practice and Practicing Theory Organization Science 22(5),
Higher Auslander-Reiten Theory
West, Jacob
2015-01-01T23:59:59.000Z
Linearly Com- pact Rings. Applications. , Category Theory,Homology Theory and their Applications II. Lecture Notes in1977), 519– , Representation Theory of Artin Algebras VI: A
Limit theory for overfit models
Calhoun, Grayson Ford
2009-01-01T23:59:59.000Z
theory. . . . . . . . . . . . . . . . . . . . . . . . .1.2 Asymptotic Theory and Main Results . . . . . . . . .Chapter 2 Limit theory for comparing over?t models out-of-
Migration revisited using the Category Theory: Application to Biological Modelling Languages
Boyer, Edmond
on the system theory appeared [2]. Within that range, Modelica [3], Stella [4] and SIMILE [5], for instance
II.2K-Theory and Intersection Theory
II.2K-Theory and Intersection Theory Henri Gillet 2.1 Introduction.3 K-Theory and Intersection Multiplicities ......................................... 253 Serre's tor Groups .............................................. 259 Higher Rational Equivalence and Milnor K-Theory
Ward, Karen
Theory and Culture: Examination of organizational and management theories and research that guide Management Roles and Operations: This course focuses on theories and principles of leadership, administration, and management for mid-level managers in supervision and administration. Social changes and trends are discussed
Ding-Yu Chung; Volodymyr Krasnoholovets
2005-12-05T23:59:59.000Z
We present the cosmic organism theory in which all visible and invisible matter has different cosmic genetic expressions. The cosmic gene includes codes for the object structure and the space structure. The cosmic digital code for the object structure consists of full object (1, 2, and 3 for particle, string, and membrane, respectively) and empty object (0) as anti de Sitter space (AdS). The tessellation lattice of empty objects is tessellattice. The decomposition of a full object in tessellattice results in the AdS/CFT (conformal field theory) duality. The digital code for the object structure accounts for the AdS/CFT duality, the dS/bulk duality, and gravity. The digital code for the space structure consists of 1 and 0 for attachment space and detachment space, respectively. Attachment space attaches to object permanently at zero speed or reversibly at the speed of light. Detachment space detaches from the object irreversibly at the speed of light. The combination of attachment space and detachment space results in miscible space, binary lattice space or binary partition space. Miscible space represents special relativity. Binary lattice space consists of multiple quantized units of attachment space separated from one another by detachment space. Binary lattice space corresponds to the nilpotent universal computational rewrite system (NUCRS) by Diaz and Rowlands. The gauge force fields and wavefunction are in binary lattice space. With tessellattice and binary lattice space, 11D brane is reducing to 4D particle surrounded by gravity and the gauge force fields. The cosmic dimension varies due to different speeds of light in different dimensional space-times and the increase of mass.
Magnetism Theory Group / POSTECH Magnetism Theory Group / POSTECH
Min, Byung Il
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
Silver, Nathaniel White
2012-01-01T23:59:59.000Z
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 ...
Battenfeld, Ingo
2008-01-01T23:59:59.000Z
This thesis presents Topological Domain Theory as a powerful and flexible framework for denotational semantics. Topological Domain Theory models a wide range of type constructions and can interpret many computational features. Furthermore, it has...We begin by describing the categories of Topological Domain Theory, and their categorical structure. In particular, we recover the basic constructions of domain theory, such as products, function spaces, fixed points and recursive types, in the context of Topological Domain Theory....As a central contribution, we give a detailed account of how computational effects can be modelled in Topological Domain Theory. Following recent work of Plotkin and Power, who proposed to construct effect monads via free algebra functors, this is done by showing that free algebras for a large class of parametrised equational theories exist in Topological Domain Theory. These parametrised equational theories are expressive enough to generate most of the standard examples of effect monads. Moreover, the free algebras in Topological Domain Theory are obtained by an explicit inductive construction, using only basic topological and set-theoretical principles....We also give a comparison of Topological and Classical Domain Theory. The category of omega-continuous dcpos embeds into Topological Domain Theory, and we prove that this embedding preserves the basic domain-theoretic constructions in most cases. We show that the classical powerdomain constructions on omega-continuous dcpos, including the probabilistic powerdomain, can be recovered in Topological Domain Theory....Finally, we give a synthetic account of Topological Domain Theory. We show that Topological Domain Theory is a specific model of Synthetic Domain Theory in the realizability topos over Scott's graph model. We give internal characterisations of the categories of Topological Domain Theory in this realizability topos, and prove the corresponding categories to be internally complete and weakly small. This enables us to show that Topological Domain Theory can model the polymorphic lambda-calculus, and to obtain a richer collection of free algebras than those constructed earlier....In summary, this thesis shows that Topological Domain Theory supports a wide range of semantic constructions, including the standard domain-theoretic constructions, computational effects and polymorphism, all within a single setting....
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
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.
Hardy's non-locality and generalized non-local theory
Sujit K. Choudhary; Sibasish Ghosh; Guruprasad Kar; Samir Kunkri; Ramij Rahaman; Anirban Roy
2011-10-31T23:59:59.000Z
Hardy's non-locality theorem for multiple two-level systems is explored in the context of generalized nonlocal theory. We find nonlocal but non-signaling probabilities, providing Hardy's nonlocal argument, which are higher than those in Quantum Mechanics. Maximum probability of success of Hardy's argument is obtained for three two-level systems in quantum as well as in a more generalized theory. Interestingly, the maximum in the nonlocal generalized theory for both the cases turns out to be same.
Semenov, Alexander [Chemistry Department, Wehr Chemistry Building, Marquette University, Milwaukee, Wisconsin 53201-1881 (United States); PSL Research University, Observatoire de Paris, Sorbonne Universités, UPMC Univ Paris 06, ENS, UCP, CNRS, UMR8112, LERMA, 5 Place Janssen, 92195 Meudon (France); Dubernet, Marie-Lise [PSL Research University, Observatoire de Paris, Sorbonne Universités, UPMC Univ Paris 06, ENS, UCP, CNRS, UMR8112, LERMA, 5 Place Janssen, 92195 Meudon (France); Babikov, Dmitri, E-mail: dmitri.babikov@mu.edu [Chemistry Department, Wehr Chemistry Building, Marquette University, Milwaukee, Wisconsin 53201-1881 (United States)
2014-09-21T23:59:59.000Z
The mixed quantum/classical theory (MQCT) for inelastic molecule-atom scattering developed recently [A. Semenov and D. Babikov, J. Chem. Phys. 139, 174108 (2013)] is extended to treat a general case of an asymmetric-top-rotor molecule in the body-fixed reference frame. This complements a similar theory formulated in the space-fixed reference-frame [M. Ivanov, M.-L. Dubernet, and D. Babikov, J. Chem. Phys. 140, 134301 (2014)]. Here, the goal was to develop an approximate computationally affordable treatment of the rotationally inelastic scattering and apply it to H{sub 2}O + He. We found that MQCT is somewhat less accurate at lower scattering energies. For example, below E = 1000 cm{sup ?1} the typical errors in the values of inelastic scattering cross sections are on the order of 10%. However, at higher scattering energies MQCT method appears to be rather accurate. Thus, at scattering energies above 2000 cm{sup ?1} the errors are consistently in the range of 1%–2%, which is basically our convergence criterion with respect to the number of trajectories. At these conditions our MQCT method remains computationally affordable. We found that computational cost of the fully-coupled MQCT calculations scales as n{sup 2}, where n is the number of channels. This is more favorable than the full-quantum inelastic scattering calculations that scale as n{sup 3}. Our conclusion is that for complex systems (heavy collision partners with many internal states) and at higher scattering energies MQCT may offer significant computational advantages.
Original research What was the programme theory of New Labour's
Birmingham, University of
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
Noncommutative Dipole Field Theories
K. Dasgupta; M. M. Sheikh-Jabbari
2002-02-05T23:59:59.000Z
Assigning an intrinsic constant dipole moment to any field, we present a new kind of associative star product, the dipole star product, which was first introduced in [hep-th/0008030]. We develop the mathematics necessary to study the corresponding noncommutative dipole field theories. These theories are sensible non-local field theories with no IR/UV mixing. In addition we discuss that the Lorentz symmetry in these theories is ``softly'' broken and in some particular cases the CP (and even CPT) violation in these theories may become observable. We show that a non-trivial dipole extension of N=4, D=4 gauge theories can only be obtained if we break the SU(4) R (and hence super)-symmetry. Such noncommutative dipole extensions, which in the maximal supersymmetric cases are N=2 gauge theories with matter, can be embedded in string theory as the theories on D3-branes probing a smooth Taub-NUT space with three form fluxes turned on or alternatively by probing a space with R-symmetry twists. We show the equivalences between the two approaches and also discuss the M-theory realization.
Quantum feedback control and classical control theory
Doherty, Andrew C. [Department of Physics, University of Auckland, Private Bag 92019, Auckland, (New Zealand)] [Department of Physics, University of Auckland, Private Bag 92019, Auckland, (New Zealand); Habib, Salman [Theoretical Division, T-8, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)] [Theoretical Division, T-8, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Jacobs, Kurt [Theoretical Division, T-8, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)] [Theoretical Division, T-8, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Mabuchi, Hideo [Norman Bridge Laboratory of Physics 12-33, California Institute of Technology, Pasadena, California 91125 (United States)] [Norman Bridge Laboratory of Physics 12-33, California Institute of Technology, Pasadena, California 91125 (United States); Tan, Sze M. [Department of Physics, University of Auckland, Private Bag 92019, Auckland, (New Zealand)] [Department of Physics, University of Auckland, Private Bag 92019, Auckland, (New Zealand)
2000-07-01T23:59:59.000Z
We introduce and discuss the problem of quantum feedback control in the context of established formulations of classical control theory, examining conceptual analogies and essential differences. We describe the application of state-observer-based control laws, familiar in classical control theory, to quantum systems and apply our methods to the particular case of switching the state of a particle in a double-well potential. (c) 2000 The American Physical Society.
Monolithic piezoelectric sensor (MPS) for sensing chemical, biochemical and physical measurands
Andle, Jeffrey C. (Bangor, ME); Lec, Ryszard M. (Orono, ME)
2000-01-01T23:59:59.000Z
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.
D-brane field theory on compact spaces
Washington Taylor
1996-11-07T23:59:59.000Z
We consider Dirichlet p-branes in type II string theory on a space which has been toroidally compactified in d dimensions. We give an explicit construction of the field theory description of this system by putting a countably infinite number of copies of each brane on the noncompact covering space, and modding out the resulting gauge theory by Z^d. The resulting theory is a gauge theory with graded fields corresponding to strings winding around the torus an arbitrary number of times. In accordance with T-duality, this theory is equivalent to the gauge theory for the dual system of (d + p)-branes wrapped around the compact directions, where the winding number is exchanged for momentum in the compact direction.
Automated Lattice Perturbation Theory
Monahan, Christopher
2014-11-01T23:59:59.000Z
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.
Theory Modeling and Simulation
Shlachter, Jack [Los Alamos National Laboratory
2012-08-23T23:59:59.000Z
Los Alamos has a long history in theory, modeling and simulation. We focus on multidisciplinary teams that tackle complex problems. Theory, modeling and simulation are tools to solve problems just like an NMR spectrometer, a gas chromatograph or an electron microscope. Problems should be used to define the theoretical tools needed and not the other way around. Best results occur when theory and experiments are working together in a team.
Bevir, Mark
2013-01-01T23:59:59.000Z
Trentmann, “The Modern Genealogy of the Consumer: Meanings,2007. Biebricher, T. “Genealogy and Governmentality. ”of Political Theory: The Genealogy of an American Vocation.
Krokhin, Arkadii [Univ. of North Texas, Denton, TX (United States)
2014-04-18T23:59:59.000Z
New applications of the theory of homogenization for heterogeneous metamaterials, in particular for acoustic cloaking and for design and engineering of tunable phononic crystal.
Constructive Quantum Field Theory
Giovanni Gallavotti
2005-10-04T23:59:59.000Z
A review of the renormalization group approach to the proof of non perturbative ultraviolet stability in scalar field theories in dimension d=2,3.
Hoskin, Peter [Cancer Centre, Mount Vernon Hospital, Northwood, Middlesex (United Kingdom); Rojas, Ana, E-mail: arc03@btconnect.com [Cancer Centre, Mount Vernon Hospital, Northwood, Middlesex (United Kingdom); Lowe, Gerry; Bryant, Linda; Ostler, Peter; Hughes, Rob; Milner, Jessica; Cladd, Helen [Cancer Centre, Mount Vernon Hospital, Northwood, Middlesex (United Kingdom)
2012-03-15T23:59:59.000Z
Purpose: To evaluate genitourinary (GU) and gastrointestinal (GI) morbidity and biochemical control of disease in patients with localized prostate adenocarcinoma treated with escalating doses per fraction of high-dose rate brachytherapy alone. Methods and Materials: A total of 197 patients were treated with 34 Gy in four fractions, 36 Gy in four fractions, 31.5 Gy in three fractions, or 26 Gy in two fractions. Median follow-up times were 60, 54, 36, and 6 months, respectively. Results: Incidence of early Grade {>=} 3 GU morbidity was 3% to 7%, and Grade 4 was 0% to 4%. During the first 12 weeks, the highest mean International Prostate Symptom Score (IPSS) value was 14, and between 6 months and 5 years it was 8. Grade 3 or 4 early GI morbidity was not observed. The 3-year actuarial rate of Grade 3 GU was 3% to 16%, and was 3% to 7% for strictures requiring surgery (4-year rate). An incidence of 1% Grade 3 GI events was seen at 3 years. Late Grade 4 GU or GI events were not observed. At 3 years, 99% of patients with intermediate-risk and 91% with high-risk disease were free of biochemical relapse (log-rank p = 0.02). Conclusions: There was no significant difference in urinary and rectal morbidity between schedules. Biochemical control of disease in patients with intermediate and high risk of relapse was good.
archaeal system ignicoccus: Topics by E-print Network
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
we apply systems sciences to analyze the human locomotor system and develop a general theory that reveals the systemic destructive process in the locomotor system, linking...
Danger Theory: The Link between AIS and IDS?+ Uwe Aickelin1
Aickelin, Uwe
Danger Theory: The Link between AIS and IDS?+ Uwe Aickelin1 , Peter Bentley2 , Steve Cayzer_Cayzer@hplb.hpl.hp.com, Jungwon@dcs.kcl.ac.uk, Julie.Mcleod@uwe.ac.uk artificial immune system, intrusion detection, danger theory self-nonself thinking and a new `Danger Theory' (DT) is emerging. This new theory suggests
Reprinted from New Beer in an Old Bottle: Eduard Buchner and the Growth of Biochemical Knowledge is to be 67 #12;HERBERT FRIEDMANN master -- that's all." LEWIS CARROLL, Through the Looking Glass The words
PAT GRANDELLI, P.E.; GREG ROCHELEAU; JOHN HAMRICK, Ph.D.; MATT CHURCH, Ph.D.; BRIAN POWELL, Ph.D.
2012-09-29T23:59:59.000Z
This paper describes the modeling work by Makai Ocean Engineering, Inc. to simulate the biochemical effects of of the nutrient-enhanced seawater plumes that are discharged by one or several 100 megawatt OTEC plants. The modeling is needed to properly design OTEC plants that can operate sustainably with acceptably low biological impact. In order to quantify the effect of discharge configuration and phytoplankton response, Makai Ocean Engineering implemented a biological and physical model for the waters surrounding O`ahu, Hawai`i, using the EPA-approved Environmental Fluid Dynamics Code (EFDC). Each EFDC grid cell was approximately 1 square kilometer by 20 meters deep, and used a time step of three hours. The biological model was set up to simulate the biochemical response for three classes of organisms: Picoplankton (< 2 um) such as prochlorococccus, nanoplankton (2-20 um), and microplankton (> 20 um) e.g., diatoms. The dynamic biological phytoplankton model was calibrated using chemical and biological data collected for the Hawaii Ocean Time Series (HOTS) project. Peer review of the biological modeling was performed. The physical oceanography model uses boundary conditions from a surrounding Hawai'i Regional Ocean Model, (ROM) operated by the University of Hawai`i and the National Atmospheric and Oceanic Administration. The ROM provided tides, basin scale circulation, mesoscale variability, and atmospheric forcing into the edges of the EFDC computational domain. This model is the most accurate and sophisticated Hawai'ian Regional Ocean Model presently available, assimilating real-time oceanographic observations, as well as model calibration based upon temperature, current and salinity data collected during 2010 near the simulated OTEC site. The ROM program manager peer-reviewed Makai's implementation of the ROM output into our EFDC model. The supporting oceanographic data was collected for a Naval Facilities Engineering Command / Makai project. Results: The model was run for a 100 MW OTEC Plant consisting of four separate ducts, discharging a total combined flow rate of 420 m3/s of warm water and 320 m3/s of cold water in a mixed discharge at 70 meters deep. Each duct was assumed to have a discharge port diameter of 10.5m producing a downward discharge velocity of about 2.18 m/s. The natural system, as measured in the HOTS program, has an average concentration of 10-15 mgC/m3. To calibrate the biological model, we first ran the model with no OTEC plant and varied biological parameters until the simulated data was a good match to the HOTS observations. This modeling showed that phytoplankton concentration were patchy and highly dynamic. The patchiness was a good match with the data variability observed within the HOTS data sets. We then ran the model with simulated OTEC intake and discharge flows and associated nutrients. Directly under the OTEC plant, the near-field plume has an average terminal depth of 172 meters, with a volumetric dilution of 13:1. The average terminal plume temperature was 19.8oC. Nitrate concentrations are 1 to 2 umol/kg above ambient. The advecting plume then further dilutes to less than 1 umol/kg above ambient within a few kilometers downstream, while remaining at depth. Because this terminal near-field plume is well below the 1% light limited depths (~120m), no immediate biological utilization of the nutrients occurs. As the nitrate is advected and dispersed downstream, a fraction of the deep ocean nutrients (< 0.5 umol/kg perturbation) mix upward where they are utilized by the ambient phytoplankton population. This occurs approximately twenty-five kilometers downstream from the plant at 110 - 70 meters depth. For pico-phytoplankton, modeling results indicate that this nutrient perturbation causes a phytoplankton perturbation of approximately 1 mgC/m3 (~10% of average ambient concentrations) that covers an area 10x5 km in size at the 70 to 90m depth. Thus, the perturbations are well within the natural variability of the system, generally corresponding to a 10 to 15% increase above the a
Logic and the set theory Lecture 19: The set theory
Choi, Suhyoung
Logic and the set theory Lecture 19: The set theory S. Choi Department of Mathematical Science KAIST, Daejeon, South Korea Fall semester, 2012 S. Choi (KAIST) Logic and set theory November 20, 2012 1 / 24 #12;Introduction About this lecture Axioms of the set theory S. Choi (KAIST) Logic and set theory
Catterall, Simon [Syracuse University] [Syracuse University; Hubisz, Jay [Syracuse University] [Syracuse University; Balachandran, Aiyalam [Syracuse University] [Syracuse University; Schechter, Joe [Syracuse University] [Syracuse University
2013-01-05T23:59:59.000Z
This final report describes the activities of the high energy theory group at Syracuse University for the period 1 January 2010 through April 30 2013. The research conducted by the group includes lattice gauge theory, non-commutative geometry, phenomenology and mathematical physics.
Instantaneous stochastic perturbation theory
Martin Lüscher
2014-12-17T23:59:59.000Z
A form of stochastic perturbation theory is described, where the representative stochastic fields are generated instantaneously rather than through a Markov process. The correctness of the procedure is established to all orders of the expansion and for a wide class of field theories that includes all common formulations of lattice QCD.
Structural and Biochemical Determinants of Ligand Binding by the c-di-GMP Riboswitch
Smith, K.; Lipchock, S; Livingston,; Shanahan, C; Strobel, S
2010-01-01T23:59:59.000Z
The bacterial second messenger c-di-GMP is used in many species to control essential processes that allow the organism to adapt to its environment. The c-di-GMP riboswitch (GEMM) is an important downstream target in this signaling pathway and alters gene expression in response to changing concentrations of c-di-GMP. The riboswitch selectively recognizes its second messenger ligand primarily through contacts with two critical nucleotides. However, these two nucleotides are not the most highly conserved residues within the riboswitch sequence. Instead, nucleotides that stack with c-di-GMP and that form tertiary RNA contacts are the most invariant. Biochemical and structural evidence reveals that the most common natural variants are able to make alternative pairing interactions with both guanine bases of the ligand. Additionally, a high-resolution (2.3 {angstrom}) crystal structure of the native complex reveals that a single metal coordinates the c-di-GMP backbone. Evidence is also provided that after transcription of the first nucleotide on the 3{prime}-side of the P1 helix, which is predicted to be the molecular switch, the aptamer is functional for ligand binding. Although large energetic effects occur when several residues in the RNA are altered, mutations at the most conserved positions, rather than at positions that base pair with c-di-GMP, have the most detrimental effects on binding. Many mutants retain sufficient c-di-GMP affinity for the RNA to remain biologically relevant, which suggests that this motif is quite resilient to mutation.
Quantum theory from one global symmetry
Chris Fields
2014-06-17T23:59:59.000Z
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.
Dmitry Zhuridov
2014-05-21T23:59:59.000Z
New theory of neutrino masses and mixing is introduced. This theory is based on a simple S_3 symmetric democratic neutrino mass matrix, and predicts the neutrino mass spectrum of normal ordering. Taking into account the matter effect and proper averaging of the oscillations, this theory agrees with the variety of atmospheric, solar and accelerator neutrino data. Moreover, the absolute scale of the neutrino masses m of 0.03 eV is determined in this theory, using the atmospheric neutrino oscillation data. In case of tiny perturbations in the democratic mass matrix only one this scale parameter m allows to explain the mentioned above neutrino results, and the theory has huge predictive power.
Foliable Operational Structures for General Probabilistic Theories
Lucien Hardy
2009-12-23T23:59:59.000Z
In this chapter a general mathematical framework for probabilistic theories of operationally understood circuits is laid out. Circuits are comprised of operations and wires. An operation is one use of an apparatus and a wire is a diagrammatic device for showing how apertures on the apparatuses are placed next to each other. Mathematical objects are defined in terms of the circuit understood graphically. In particular, we do not think of the circuit as sitting in a background time. Circuits can be foliated by hypersurfaces comprised of sets of wires. Systems are defined to be associated with wires. A closable set of operations is defined to be one for which the probability associated with any circuit built from this set is independent both of choices on other circuits and of extra circuitry that may be added to outputs from this circuit. States can be associated with circuit fragments corresponding to preparations. These states evolve on passing through circuit fragments corresponding to transformations. The composition of transformations is treated. A number of theorems are proven including one which rules out quaternionic quantum theory. The case of locally tomographic theories (where local measurements on a systems components suffice to determine the global state) is considered. For such theories the probability can be calculated for a circuit from matrices pertaining the operations that comprise that circuit. Classical probability theory and quantum theory are exhibited as examples in this framework.
Viscosity, Black Holes, and Quantum Field Theory
D. T. Son; A. O. Starinets
2007-07-11T23:59:59.000Z
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.
DistillationTheory.fm 2 September 1999 Distillation Theory.
Skogestad, Sigurd
1 DistillationTheory.fm 2 September 1999 Distillation Theory. by Ivar J. Halvorsen and Sigurd, Norway #12;2 DistillationTheory.fm 2 September 1999 Table of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Material Balance on a Distillation Stage
M-Theory and Maximally Supersymmetric Gauge Theories
Neil Lambert
2012-05-21T23:59:59.000Z
In this informal review for non-specalists we discuss the construction of maximally supersymmetric gauge theories that arise on the worldvolumes branes in String Theory and M-Theory. Particular focus is made on the relatively recent construction of M2-brane worldvolume theories. In a formal sense, the existence of these quantum field theories can be viewed as predictions of M-Theory. Their construction is therefore a reinforcement of the ideas underlying String Theory and M-Theory. We also briefly discuss the six-dimensional conformal field theory that is expected to arise on M5-branes. The construction of this theory is not only an important open problem for M-Theory but also a significant challenge to our current understanding of quantum field theory more generally.
A simple framework to justify linear response theory
Martin Hairer; Andrew J Majda
2010-02-17T23:59:59.000Z
The use of linear response theory for forced dissipative stochastic dynamical systems through the fluctuation dissipation theorem is an attractive way to study climate change systematically among other applications. Here, a mathematically rigorous justification of linear response theory for forced dissipative stochastic dynamical systems is developed. The main results are formulated in an abstract setting and apply to suitable systems, in finite and infinite dimensions, that are of interest in climate change science and other applications.
Systems Theory for Pharmaceutical Drug Discovery
Aswani, Anil Jayanti
2010-01-01T23:59:59.000Z
3):371–381, 2002. [204] Alan Turing. The chemical basis ofwas the seminal paper by Alan Turing on morphogenesis. The
Theory and application of open quantum systems
Chan, Ching-Kit; Chan, Ching-Kit
2012-01-01T23:59:59.000Z
of a coherent electromagnetic pulse. It treats the controlwith a laser pulse and the electromagnetic vacuum in the
Svozil, K. [Univ. of Technology, Vienna (Austria)
1995-11-01T23:59:59.000Z
Inasmuch as physical theories are formalizable, set theory provides a framework for theoretical physics. Four speculations about the relevance of set theoretical modeling for physics are presented: the role of transcendental set theory (i) in chaos theory, (ii) for paradoxical decompositions of solid three-dimensional objects, (iii) in the theory of effective computability (Church-Turing thesis) related to the possible {open_quotes}solution of supertasks,{close_quotes} and (iv) for weak solutions. Several approaches to set theory and their advantages and disadvantages for physical applications are discussed: Cantorian {open_quotes}naive{close_quotes} (i.e., nonaxiomatic) set theory, contructivism, and operationalism. In the author`s opinion, an attitude, of {open_quotes}suspended attention{close_quotes} (a term borrowed from psychoanalysis) seems most promising for progress. Physical and set theoretical entities must be operationalized wherever possible. At the same time, physicists should be open to {open_quotes}bizarre{close_quotes} or {open_quotes}mindboggling{close_quotes} new formalisms, which need not be operationalizable or testable at the time of their creation, but which may successfully lead to novel fields of phenomenology and technology.
Hamilton-Jacobi Theory in k-Symplectic Field Theories
M. De LeÓn; D. MartÍn De Diego; J. C. Marrero; M. Salgado; S. Vilariño
2010-05-10T23:59:59.000Z
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.
Limited Holism and Real-Vector-Space Quantum Theory
Lucien Hardy; William K. Wootters
2010-05-26T23:59:59.000Z
Quantum theory has the property of "local tomography": the state of any composite system can be reconstructed from the statistics of measurements on the individual components. In this respect the holism of quantum theory is limited. We consider in this paper a class of theories more holistic than quantum theory in that they are constrained only by "bilocal tomography": the state of any composite system is determined by the statistics of measurements on pairs of components. Under a few auxiliary assumptions, we derive certain general features of such theories. In particular, we show how the number of state parameters can depend on the number of perfectly distinguishable states. We also show that real-vector-space quantum theory, while not locally tomographic, is bilocally tomographic.
Data Modeling and Theory Construction
Jan de Leeuw
2011-01-01T23:59:59.000Z
MODELING AND THEORY CONSTRUCTION F. Suppe. The Structure ofMODELING AND THEORY CONSTRUCTION JAN DE LEEUW This paper wasMODELING AND THEORY CONSTRUCTION F????? 1. The Scientist
STATISTICAL MECHANICS AND FIELD THEORY
Samuel, S.A.
2010-01-01T23:59:59.000Z
York. K. Bardakci, Field Theory for Solitons, II, BerkeleyFart I Applications of Field Theory Methods to StatisticalStatistical Mechanics to Field Theory Chapter IV The Grand
Quantum statistical correlations in thermal field theories: Boundary effective theory
Bessa, A. [Escola de Ciencias e Tecnologia, Universidade Federal do Rio Grande do Norte, Caixa Postal 1524, 59072-970, Natal, RN (Brazil); Instituto de Fisica, Universidade de Sao Paulo, Caixa Postal 66318, 05315-970, Sao Paulo, SP (Brazil); Brandt, F. T. [Instituto de Fisica, Universidade de Sao Paulo, Caixa Postal 66318, 05315-970, Sao Paulo, SP (Brazil); Carvalho, C. A. A. de; Fraga, E. S. [Instituto de Fisica, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, 21941-972, Rio de Janeiro, RJ (Brazil)
2010-09-15T23:59:59.000Z
We show that the one-loop effective action at finite temperature for a scalar field with quartic interaction has the same renormalized expression as at zero temperature if written in terms of a certain classical field {phi}{sub c}, and if we trade free propagators at zero temperature for their finite-temperature counterparts. The result follows if we write the partition function as an integral over field eigenstates (boundary fields) of the density matrix element in the functional Schroedinger field representation, and perform a semiclassical expansion in two steps: first, we integrate around the saddle point for fixed boundary fields, which is the classical field {phi}{sub c}, a functional of the boundary fields; then, we perform a saddle-point integration over the boundary fields, whose correlations characterize the thermal properties of the system. This procedure provides a dimensionally reduced effective theory for the thermal system. We calculate the two-point correlation as an example.
Pressure of massless hot scalar theory in the boundary effective theory framework
Bessa, A. [Escola de Ciencias e Tecnologia, Universidade Federal do Rio Grande do Norte, Caixa Postal 1524, 59072-970, Natal, RN (Brazil); Brandt, F. T. [Instituto de Fisica, Universidade de Sao Paulo, Caixa Postal 66318, 05315-970, Sao Paulo, SP (Brazil); Carvalho, C. A. A. de; Fraga, E. S. [Instituto de Fisica, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, 21941-972, Rio de Janeiro, RJ (Brazil)
2011-04-15T23:59:59.000Z
We use the boundary effective theory approach to thermal field theory in order to calculate the pressure of a system of massless scalar fields with quartic interaction. The method naturally separates the infrared physics, and is essentially nonperturbative. To lowest order, the main ingredient is the solution of the free Euler-Lagrange equation with nontrivial (time) boundary conditions. We derive a resummed pressure, which is in good agreement with recent calculations found in the literature, following a very direct and compact procedure.
Theory of Dipole Induced Electromagnetic Transparency
Puthumpally-Joseph, Raiju; Sukharev, Maxim; Charron, Eric
2015-01-01T23:59:59.000Z
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...
Wang, L.; Gamez, A.; Archer, H.; Abola, E.E.; Sarkissian, C.N.; Fitzpatrick, P.; Wendt, D.; Zhang, Y.; Vellard, M.; Bliesath, J.; Bell, S.; Lemont, J.; Scriver, C.R.; Stevens, R.C.
2009-05-26T23:59:59.000Z
We have recently observed promising success in a mouse model for treating the metabolic disorder phenylketonuria with phenylalanine ammonia lyase (PAL) from Rhodosporidium toruloides and Anabaena variabilis. Both molecules, however, required further optimization in order to overcome problems with protease susceptibility, thermal stability, and aggregation. Previously, we optimized PAL from R. toruloides, and in this case we reduced aggregation of the A. variabilis PAL by mutating two surface cysteine residues (C503 and C565) to serines. Additionally, we report the structural and biochemical characterization of the A. variabilis PAL C503S/C565S double mutant and carefully compare this molecule with the R. toruloides engineered PAL molecule. Unlike previously published PAL structures, significant electron density is observed for the two active-site loops in the A. variabilis C503S/C565S double mutant, yielding a complete view of the active site. Docking studies and N-hydroxysuccinimide-biotin binding studies support a proposed mechanism in which the amino group of the phenylalanine substrate is attacked directly by the 4-methylidene-imidazole-5-one prosthetic group. We propose a helix-to-loop conformational switch in the helices flanking the inner active-site loop that regulates accessibility of the active site. Differences in loop stability among PAL homologs may explain the observed variation in enzyme efficiency, despite the highly conserved structure of the active site. A. variabilis C503S/C565S PAL is shown to be both more thermally stable and more resistant to proteolytic cleavage than R. toruloides PAL. Additional increases in thermal stability and protease resistance upon ligand binding may be due to enhanced interactions among the residues of the active site, possibly locking the active-site structure in place and stabilizing the tetramer. Examination of the A. variabilis C503S/C565S PAL structure, combined with analysis of its physical properties, provides a structural basis for further engineering of residues that could result in a better therapeutic molecule.
Sproston, Jeremy
> = { expression > -> expression >, , kinetic function in the form if exp (,=) exp then exp else exp. · kinetic function: is described both through expression for the parameters of kinetic functions. 1 - Run the program java -jar Biomodel.jar 2 Definition a model
Mirzabekov, Andrei Darievich (Moscow, RU); Lysov, Yuri Petrovich (Moscow, RU); Dubley, Svetlana A. (Moscow, RU)
2000-01-01T23:59:59.000Z
A method for fractionating and sequencing DNA via affinity interaction is provided comprising contacting cleaved DNA to a first array of oligonucleotide molecules to facilitate hybridization between said cleaved DNA and the molecules; extracting the hybridized DNA from the molecules; contacting said extracted hybridized DNA with a second array of oligonucleotide molecules, wherein the oligonucleotide molecules in the second array have specified base sequences that are complementary to said extracted hybridized DNA; and attaching labeled DNA to the second array of oligonucleotide molecules, wherein the labeled re-hybridized DNA have sequences that are complementary to the oligomers. The invention further provides a method for performing multi-step conversions of the chemical structure of compounds comprising supplying an array of polyacrylamide vessels separated by hydrophobic surfaces; immobilizing a plurality of reactants, such as enzymes, in the vessels so that each vessel contains one reactant; contacting the compounds to each of the vessels in a predetermined sequence and for a sufficient time to convert the compounds to a desired state; and isolating the converted compounds from said array.
ALS Evidence Confirms Combustion Theory
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
ALS Evidence Confirms Combustion Theory ALS Evidence Confirms Combustion Theory Print Wednesday, 22 October 2014 11:43 Researchers recently uncovered the first step in the process...
Preemption Games: Theory and Experiment*
Anderson, Steven T; Friedman, Daniel; Oprea, Ryan
2008-01-01T23:59:59.000Z
of Investment: Extensions of Real Options Theory and Timingand Perraudin, W. , 2003, “Real options and preemption underand the theory of real options. We also characterize simpler
Gold, Natalie; Sugden, Robert
2007-01-01T23:59:59.000Z
In decision theory, it is almost universally presupposed that agency is invested in individuals: each person acts on her own preferences and beliefs. A person’s preferences may take account of the effects of her actions on ...
Nonsymmetric Gravitational Theory
J. W. Moffat
1994-11-10T23:59:59.000Z
A new version of nonsymmetric gravitational theory is presented. The field equations are expanded about the Minkowski metric, giving in lowest order the linear Einstein field equations and massive Proca field equations for the antisymmetric field $g_{[\\mu\
Abstracting over Semantic Theories
Holt, Alexander G B
The topic of this thesis is abstraction over theories of formal semantics for natural language.It is motivated by the belief that a metatheoretical perspective can contribute both to a better theoretical understanding of ...
Hull, Chris
The zero modes of closed strings on a torus — the torus coordinates plus dual coordinates conjugate to winding number — parameterize a doubled torus. In closed string field theory, the string field depends on all zero-modes ...
viii Contents. Three Field Theory. 87—89. 90—95. 96—97. 98—107. 108—114. 115—121. De?nition and examples of ?eld structure 67. Vector spaces, bases ...
Temperature Modeling in Activated Sludge Systems: A Case Study
Wells, Scott A.
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
Optimiziing the laboratory monitoring of biological wastewater-purification systems
S.V. Gerasimov [OAO Koks, Kemerovo (Russian Federation)
2009-05-15T23:59:59.000Z
Optimization of the laboratory monitoring of biochemical wastewater-treatment systems at coke plants is considered, for the example of OAO Koks. By adopting a methodological approach to determine the necessary data from chemical analysis, it is possible to reduce the time, labor, and materials required for monitoring, without impairing the purification process or compromising the plant's environmental policies.
PROCESS SYSTEMS ENGINEERING Design of Flexible Reduced Kinetic Mechanisms
Androulakis, Ioannis (Yannis)
PROCESS SYSTEMS ENGINEERING Design of Flexible Reduced Kinetic Mechanisms Avinash R. Sirdeshpande and Marianthi G. Ierapetritou Dept. of Chemical and Biochemical Engineering, Rutgers, The State UniversityMobil Research and Engineering, Annandale, NJ 08801 Reduced mechanisms are often used in place of detailed
Carette, Jacques
=y ubA={xP| aA ax} #12;More Order Theory Suprema and infima: Â x is sup(A) (join) if it is the minimal for types Representation of partial/incomplete data {Dana Scott, 1970} #12;Order Theory Partially element of the upper bound on A. Â inf (meet) is maximal of lower bound Lattice: if sup and inf exist
Beyond heat baths II: Framework for generalized thermodynamic resource theories
Nicole Yunger Halpern
2015-06-17T23:59:59.000Z
Thermodynamics, which describes vast systems, has been reconciled with small scales, relevant to single-molecule experiments, in resource theories. Resource theories have been used to model exchanges of energy and information. Recently, particle exchanges were modeled; and an umbrella family of thermodynamic resource theories was proposed to model diverse baths, interactions, and free energies. This paper motivates and details the family's structure and prospective applications. How to model electrochemical, gravitational, magnetic, and other thermodynamic systems is explained. Szilard's engine and Landauer's Principle are generalized, as resourcefulness is shown to be convertible not only between information and gravitational energy, but also among diverse degrees of freedom. Extensive variables are associated with quantum operators that might fail to commute, introducing extra nonclassicality into thermodynamic resource theories. This generalization expands the theories' potential for modeling realistic systems with which small-scale statistical mechanics might be tested experimentally.
Combining Decision Procedures for Sorted Theories
Tinelli, Cesare
setting, nor is it obvious that the method in fact lifts as is to logics with sorts. To bridge this gap decision procedures for logical theories arises in many areas of computer science and artificial to Nelson and Oppen [8]. This method is at the heart of the verification systems cvc [9], argo-lib [6
Network Security Validation Using Game Theory
Mavronicolas, Marios
1 Network Security Validation Using Game Theory Vicky Papadopoulou and Andreas Gregoriades Computer.papadopoulou,a.gregoriades}@euc.ac.cy Abstract: Non-functional requirements (NFR) such as network security recently gained widespread attention the immunity property of the distributed systems that depended on these networks. Security requirements
Chiara Marletto
2014-11-04T23:59:59.000Z
Neo-Darwinian evolutionary theory explains how the appearance of purposive design in the sophisticated adaptations of living organisms can have come about without their intentionally being designed. The explanation relies crucially on the possibility of certain physical processes: mainly, gene replication and natural selection. In this paper I show that for those processes to be possible without the design of biological adaptations being encoded in the laws of physics, those laws must have certain other properties. The theory of what these properties are is not part of evolution theory proper, and has not been developed, yet without it the neo-Darwinian theory does not fully achieve its purpose of explaining the appearance of design. To this end I apply Constructor Theory's new mode of explanation to provide an exact formulation of the appearance of design, of no-design laws, and of the logic of self-reproduction and natural selection, within fundamental physics. I conclude that self-reproduction, replication and natural selection are possible under no-design laws, the only non-trivial condition being that they allow digital information to be physically instantiated. This has an exact characterisation in the constructor theory of information. I also show that under no-design laws an accurate replicator requires the existence of a "vehicle" constituting, together with the replicator, a self-reproducer.
Chaotic thermalization in classical gauge theories
Woitek, Marcio; Krein, Gastao [Instituto de Fisica Teorica, Universidade Estadual Paulista Rua Dr. Bento Teobaldo Ferraz, 271 - Bloco II, Sao Paulo, SP (Brazil)
2013-05-06T23:59:59.000Z
We explore the idea that chaos concepts might be useful for understanding the thermalization in gauge theories. The SU(2) Higgs model is discussed as a prototype of system with gauge fields coupled to matter fields. Through the numerical solution of the equations of motion, we are able to characterize chaotic behavior via the corresponding Lyapunov exponent. Then it is demonstrated that the system's approach to equilibrium can be understood through direct application of the principles of Statistical Mechanics.
Disposal: Science and Theory Disposal: Science and Theory
Benson, Eric R.
Disposal: Science and Theory #12;Disposal: Science and Theory Foam Used in Actual Outbreak · Water #12;Disposal: Science and Theory Water Based Foam Culling Demo · First large scale comparison · Two:46 (m:s) #12;Disposal: Science and Theory WV H5N2 AIV 2007 · AIV positive turkeys 25,000 turkey farm
Disposal: Science and Theory Disposal: Science and Theory
Benson, Eric R.
Disposal: Science and Theory #12;Disposal: Science and Theory Poultry Farm Daily Disposal Methods 0;Disposal: Science and Theory First Composter in Delaware · Delmarva was of the first daily composting · 120 in USA over next 10 years #12;Disposal: Science and Theory Composting Procedure · Mixture 1 ½ to 2
Disposal: Science and Theory Disposal: Science and Theory
Benson, Eric R.
Disposal: Science and Theory #12;Disposal: Science and Theory Use of Composting · Composting has British Columbia 2009 #12;Disposal: Science and Theory · Initial farm linked to NY LBM · Two additional and pile procedure Delmarva 2004 #12;Disposal: Science and Theory Delmarva 2004 · Composting used
Disposal: Science and Theory Disposal: Science and Theory
Benson, Eric R.
Disposal: Science and Theory #12;Disposal: Science and Theory · Las recomendaciones de campo se la espuma #12;Disposal: Science and Theory · Múltiples especies de aves pueden despoblarse con espuma cesación #12;Disposal: Science and Theory · Dentro de una especie, pueden existir variaciones Los ánades
Disposal: Science and Theory Disposal: Science and Theory
Benson, Eric R.
Disposal: Science and Theory #12;Disposal: Science and Theory · Procedimiento básico Desarrollar una pila de carcasas y lecho. Compostaje masivo de emergencia #12;Disposal: Science and Theory de emergencia #12;Disposal: Science and Theory · Desarrollar planes antes de que ocurra una
Disposal: Science and Theory Disposal: Science and Theory
Benson, Eric R.
Disposal: Science and Theory #12;Disposal: Science and Theory 0 20 40 60 80 100 Compostaje #12;Disposal: Science and Theory · Delmarva fue de las primeras granjas en realizar el compostaje de en EE.UU. en los próximos 10 años. Pionera en compostaje en Delaware #12;Disposal: Science and Theory
Disposal: Science and Theory Disposal: Science and Theory
Benson, Eric R.
Disposal: Science and Theory #12;Disposal: Science and Theory · Compostaje de aves de corralRouchey et al., 2005) Investigación previa #12;Disposal: Science and Theory · Se ha evaluado y documentado el, bovino Investigación previa #12;Disposal: Science and Theory · Experimento nro. 1 Impacto de la espuma en
Disposal: Science and Theory Disposal: Science and Theory
Benson, Eric R.
Disposal: Science and Theory #12;Disposal: Science and Theory · El compostaje se define como la: Science and Theory · Compostaje óptimo Relación carbono/nitrógeno (C:N): 20:1 a 35:1 Contenido de Compostaje #12;Disposal: Science and Theory · Se ha utilizado satisfactoriamente una variedad de materiales
Disposal: Science and Theory Disposal: Science and Theory
Benson, Eric R.
Disposal: Science and Theory #12;Disposal: Science and Theory · Se ubica el carretón con el enfriamiento Ventiladores de túnel de viento #12;Disposal: Science and Theory · Se estaciona el remolque en uno: Science and Theory · Se usa un equipo de dos personas para hacer funcionar el sistema: Operario del
Disposal: Science and Theory Disposal: Science and Theory
Benson, Eric R.
Disposal: Science and Theory #12;Disposal: Science and Theory Composting · Composting is defined drop #12;Disposal: Science and Theory Composting · Optimal composting Carbon to nitrogen ratio (C;Disposal: Science and Theory Compost Composition · A variety of supplemental carbon materials have been
Disposal: Science and Theory Disposal: Science and Theory
Benson, Eric R.
Disposal: Science and Theory #12;Disposal: Science and Theory · Opciones para la eliminación · ¿Qué compostaje durante brotes de enfermedades Lista de contenido #12;Disposal: Science and Theory "Ante un brote brotes de IIAP #12;Disposal: Science and Theory · En 2004, se despoblaron 100 millones de aves en todo el
Disposal: Science and Theory Disposal: Science and Theory
Benson, Eric R.
Disposal: Science and Theory #12;Disposal: Science and Theory · El compostaje se ha usado como Virginia (2007) British Columbia (2009) Uso del compostaje #12;Disposal: Science and Theory · Primera apilamiento Delmarva (2004) #12;Disposal: Science and Theory · El compostaje se usó para proteger una densa
Disposal: Science and Theory Disposal: Science and Theory
Benson, Eric R.
Disposal: Science and Theory #12;Disposal: Science and Theory Mass Emergency Composting · Basic Create carcass and litter windrow #12;Disposal: Science and Theory Mass Emergency Composting · Basic cover Clean and disinfect house Sample for virus again #12;Disposal: Science and Theory Mass
Disposal: Science and Theory Disposal: Science and Theory
Benson, Eric R.
Disposal: Science and Theory #12;Disposal: Science and Theory · Gassing is a preferred #12;Disposal: Science and Theory Carbon Dioxide Gassing · Carbon dioxide (CO2) one of the standard sensitivity time #12;Disposal: Science and Theory · Argon-CO2 gas depopulation evaluated under laboratory
Disposal: Science and Theory Disposal: Science and Theory
Benson, Eric R.
Disposal: Science and Theory #12;Disposal: Science and Theory Foam Generator Setup · Drop off foam generator cart at one end of house #12;Disposal: Science and Theory Foam Generator Setup · Trailer parked generator attached to hose #12;Disposal: Science and Theory Foam Generation Begins · Team of two to operate
Disposal: Science and Theory Disposal: Science and Theory
Benson, Eric R.
Disposal: Science and Theory #12;Disposal: Science and Theory Summary · Foam is currently a viable Foam application directly to cage #12;Disposal: Science and Theory Legal Status of Foam · Procedure depopulation, culling, and euthanasia #12;Disposal: Science and Theory Acknowledgements · USDA AICAP2 · USDA
Theory Interpretation in Simple Type Theory William M. Farmer
Farmer, William M.
Theory Interpretation in Simple Type Theory William M. Farmer The MITRE Corporation 202 Burlington Road Bedford, MA 01730-1420, USA farmer@mitre.org 26 October 1994 Abstract. Theory interpretation is a logical technique for relating one axiomatic theory to another with important applications in mathematics
Theory Revision in Equation Discovery Ljupco Todorovski and Saso Dzeroski
Dzeroski, Saso
. Section 5 presents the experiments with revising the earth-science equation model. The last sectionTheory Revision in Equation Discovery Ljupco Todorovski and Saso Dzeroski Department of Intelligent than from an initial hypothesis in the space of equations. On the other hand, theory revision systems
On the WDVV equations in five-dimensional gauge theories
L. K. Hoevenaars; R. Martini
2003-01-15T23:59:59.000Z
It is well-known that the perturbative prepotentials of four-dimensional N=2 supersymmetric Yang-Mills theories satisfy the generalized WDVV equations, regardless of the gauge group. In this paper we study perturbative prepotentials of the five-dimensional theories for some classical gauge groups and determine whether or not they satisfy the WDVV system.
On New Conformal Field Theories with Affine Fusion Rules
Doron Gepner
1999-05-07T23:59:59.000Z
Some time ago, conformal data with affine fusion rules were found. Our purpose here is to realize some of these conformal data, using systems of free bosons and parafermions. The so constructed theories have an extended $W$ algebras which are close analogues of affine algebras. Exact character formulae is given, and the realizations are shown to be full fledged unitary conformal field theories.
Shear viscosity of the $\\Phi^4$ theory from classical simulation
Homor, M M
2015-01-01T23:59:59.000Z
Shear viscosity of the classical $\\Phi^4$ theory is measured using classical microcanonical simulation. To calculate the Kubo formula, we measure the energy-momentum tensor correlation function, and apply the Green-Kubo relation. Being a classical theory, the results depend on the cutoff which should be chosen in the range of the temperature. Comparison with experimentally accessible systems is also performed.
Shear viscosity of the $?^4$ theory from classical simulation
M. M. Homor; A. Jakovac
2015-05-05T23:59:59.000Z
Shear viscosity of the classical $\\Phi^4$ theory is measured using classical microcanonical simulation. To calculate the Kubo formula, we measure the energy-momentum tensor correlation function, and apply the Green-Kubo relation. Being a classical theory, the results depend on the cutoff which should be chosen in the range of the temperature. Comparison with experimentally accessible systems is also performed.
Quantum theory of tensionless noncommutative p-branes
Gamboa, J. [Departamento de Fisica, Universidad de Santiago de Chile, Casilla 307, Santiago 2 (Chile); Loewe, M. [Facultad de Fisica, Pontificia Universidad Catolica de Chile, Casilla 306, Santiago 22 (Chile); Mendez, F. [INFN, Laboratorio Nazionali del Gran Sasso, SS, 17bis, 67010 Asergi, L'Aquila (Italy)
2004-11-15T23:59:59.000Z
The quantum theory involving noncommutative tensionless p-branes is studied following path integral methods. Our procedure allows a simple treatment for generally covariant noncommutative extended systems and it contains, as a particular case, the thermodynamics and the quantum tensionless string theory. The effect induced by noncommutativity in the field space is to produce a confinement among pairing of null p-branes.
Unified Field Theories Hitoshi Murayama
Murayama, Hitoshi
Unified Field Theories Hitoshi Murayama Department of Physics, University of California Berkeley This article explains the idea of unified field theories in particle physics. It starts with a historical review of two successful theories which unified two apparently distinct forces: Maxwell's theory
Good Research in Network Theory
Chiang, Mung
Good Research in Network Theory Mung Chiang Princeton University IEEE INFOCOM 2010 Panel #12;There's no Shortage of Answers already · "There's nothing more practical than good theory" · "A good theory is like a good joke" · "Good theory makes a difference: PageRank, CDMA, Dynamic alternate routing, Aloha, Packet
Theory in Biology available light
Nowak, Martin A.
Magazine R406 Theory in Biology Theory is available light Martin A. Nowak Many people praise Gregor the neutral theory of evolution, which assumes that the overwhelming majority of molecular mutations do assume the neutral theory is correct. In a brilliant PhD thesis submitted in 1964, Bill Hamilton
Stein, J.E.; Hom, T.; Collier, T.K.; Brown, D.W.; Varanasi, U. [National Oceanic and Atmospheric Administration, Seattle, WA (United States)
1995-06-01T23:59:59.000Z
Juvenile chinook salmon (Oncorhynchus tshawytscha) were sampled in Puget Sound, Washington, for 2 consecutive years from contaminated urban estuaries, a nonurban estuary, and from the respective hatcheries to assess exposure to anthropogenic chemicals and to determine if biochemical changes were occurring as a consequence of exposure. Exposure to polycyclic aromatic hydrocarbons (PAHs), chlorinated hydrocarbons, and butyltins was determined. The mean concentrations of PAHs and PCBs in stomach contents and PCBs in liver were significantly higher in salmon from the urban estuaries compared to fish from the nonurban estuary in both sampling years. Higher hepatic concentrations of PCBs than DDTs were found in fish from the urban estuaries, but butyltins were rarely detected. Further, mean concentrations of fluorescent aromatic compounds in bile, an estimate of exposure to PAHs, and hepatic cytochrome P4501A and levels of hepatic DNA adducts were also significantly higher in salmon from the urban estuaries compared to either the nonurban estuary or the hatcheries. Results demonstrated increased exposure to chemical contaminants in outmigrant juvenile salmon during their relatively brief residence in urban estuaries of Puget Sound. Moreover, the exposure was sufficient to elicit biochemical responses, which suggest a potential for other biological effects to ensue.
Algebraic Quantum Field Theory
Hans Halvorson; Michael Mueger
2006-02-14T23:59:59.000Z
Algebraic quantum field theory provides a general, mathematically precise description of the structure of quantum field theories, and then draws out consequences of this structure by means of various mathematical tools -- the theory of operator algebras, category theory, etc.. Given the rigor and generality of AQFT, it is a particularly apt tool for studying the foundations of QFT. This paper is a survey of AQFT, with an orientation towards foundational topics. In addition to covering the basics of the theory, we discuss issues related to nonlocality, the particle concept, the field concept, and inequivalent representations. We also provide a detailed account of the analysis of superselection rules by S. Doplicher, R. Haag, and J. E. Roberts (DHR); and we give an alternative proof of Doplicher and Roberts' reconstruction of fields and gauge group from the category of physical representations of the observable algebra. The latter is based on unpublished ideas due to Roberts and the abstract duality theorem for symmetric tensor *-categories, a self-contained proof of which is given in the appendix.
Vector field theories in cosmology
A. Tartaglia; N. Radicella
2007-08-05T23:59:59.000Z
Recently proposed theories based on the cosmic presence of a vectorial field are compared and contrasted. In particular the so called Einstein aether theory is discussed in parallel with a recent proposal of a strained space-time theory (Cosmic Defect theory). We show that the latter fits reasonably well the cosmic observed data with only one, or at most two, adjustable parameters, whilst other vector theories use much more. The Newtonian limits are also compared. Finally we show that the CD theory may be considered as a special case of the aether theories, corresponding to a more compact and consistent paradigm.
Remarks on twisted noncommutative quantum field theory
Zahn, Jochen [II. Institut fuer Theoretische Physik, Universitaet Hamburg, Luruper Chaussee 149, 22761 Hamburg (Germany)
2006-05-15T23:59:59.000Z
We review recent results on twisted noncommutative quantum field theory by embedding it into a general framework for the quantization of systems with a twisted symmetry. We discuss commutation relations in this setting and show that the twisted structure is so rigid that it is hard to derive any predictions, unless one gives up general principles of quantum theory. It is also shown that the twisted structure is not responsible for the presence or absence of UV/IR-mixing, as claimed in the literature.
Theory of cargo and membrane trafficking
Lionel Foret; Lutz Brusch; Frank Jülicher
2014-12-03T23:59:59.000Z
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.
On the Geometrical Gyro-Kinetic Theory Emmanuel Frnod
Boyer, Edmond
On the Geometrical Gyro-Kinetic Theory Emmanuel Frénod Mathieu Lutz Abstract - Considering introduced : Partial Lie Sums. Keywords - Tokamak; Stellarator; Gyro-Kinetic Approximation; Hamiltonian.6 The Darboux Coordinates System . . . . . . . . . . . . . . . . . . . . . . . . 32 3.7 Expression
Understanding predicted shifts in diazotroph biogeography using resource competition theory
Ward, B. A.
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 ...
General Examination in Theory August 2007
Wolfe, Patrick J.
as semiotics, hermeneutics, gender theory, and Adorno's critical theory. Place cognitive musicology within
Mansouri, F.; Suranyi, P; Wijewardhana, L.C.R.
1991-10-01T23:59:59.000Z
In the test particle approximation, the scattering amplitude for two-particle scattering in (2+1)-dimensional Chern-Simons-Witten gravity and supergravity was computed and compared to the corresponding metric solutions. The formalism was then extended to the exact gauge theoretic treatment of the two-particle scattering problem and compared to 't Hooft's results from the metric approach. We have studied dynamical symmetry breaking in 2+1 dimensional field theories. We have analyzed strong Extended Technicolor (ETC) models where the ETC coupling is close to a critical value. There are effective scalar fields in each of the theories. We have worked our how such scalar particles can be produced and how they decay. The {phi}{sup 4} field theory was investigated in the Schrodinger representation. The critical behavior was extracted in an arbitrary number of dimensions in second order of a systematic truncation approximation. The correlation exponent agrees with known values within a few percent.
C. J. Clarke; J. E. Pringle
2004-03-17T23:59:59.000Z
We show how the viscous evolution of Keplerian accretion discs can be understood in terms of simple kinetic theory. Although standard physics texts give a simple derivation of momentum transfer in a linear shear flow using kinetic theory, many authors, as detailed by Hayashi & Matsuda 2001, have had difficulties applying the same considerations to a circular shear flow. We show here how this may be done, and note that the essential ingredients are to take proper account of, first, isotropy locally in the frame of the fluid and, second, the geometry of the mean flow.
Walsh, Timothy Francis; Reese, Garth M.; Bhardwaj, Manoj Kumar
2004-08-01T23:59:59.000Z
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 programer-notes manual, the user's notes and of course the material in the open literature.
Chris Quigg
2001-08-10T23:59:59.000Z
After a short essay on the current state of particle physics, the author reviews the antecedents of the modern picture of the weak and electromagnetic interactions and then undertakes a brief survey of the SU(2){sub L} {circle_times} U(1){sub Y} electroweak theory. The authors reviews the features of electroweak phenomenology at tree level and beyond, presents an introduction to the Higgs boson and the 1-TeV scale, and examines arguments for enlarging the electroweak theory. The author concludes with a brief look at low-scale gravity.
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
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.
Theories of Motivation -- Borrowing the Best
Terpstra, D. E.
1983-01-01T23:59:59.000Z
The paper briefly reviews five approaches to motivation-Maslow's Need Hierarchy Theory, Herzberg's Dual-Factor Theory, Locke's Goal-Setting Theory, Expectancy/Valence Theory, and Reinforcement Theory. On the basis of the review, some general...
Nuclear effective field theory on the lattice
Hermann Krebs; Bugra Borasoy; Evgeny Epelbaum; Dean Lee; Ulf-G. Meiß ner
2008-10-01T23:59:59.000Z
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.
Encoding field theories into gravities
Aoki, Sinya; Onogi, Tetsuya
2015-01-01T23:59:59.000Z
We propose a method, which encodes the information of a $d$ dimensional quantum field theory into a $d+1$ dimensional gravity in the $1/N$ expansion. We first construct a $d+1$ dimensional field theory from the $d$ dimensional one via the gradient flow equation, whose flow time $t$ represents the energy scale of the system such that $t\\rightarrow 0$ corresponds to the ultra-violet (UV) while $t\\rightarrow\\infty$ to the infra-red (IR). We then define the induced metric from $d+1$ dimensional field operators. We show that the metric defined in this way becomes classical in the large $N$ limit, in a sense that quantum fluctuations of the metric are suppressed as $1/N$ due to the large $N$ factorization property. As a concrete example, we apply our method to the O(N) non-linear $\\sigma$ model in two dimensions. We calculate the induced metric in three dimensions, which is shown to describe De Sitter (dS) or Anti De Sitter (AdS) space in the massless limit, where the mass is dynamically generated in the O(N) non-l...
Non-Relativistic Superstring Theories
Kim, Bom Soo
2007-12-14T23:59:59.000Z
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.
Experimental quantum field theory
Bell, J S
1977-01-01T23:59:59.000Z
Presented here, is, in the opinion of the author, the essential minimum of quantum field theory that should be known to cultivated experimental particle physicists. The word experimental describes not only the audience aimed at but also the level of mathematical rigour aspired to. (0 refs).
Variational transition state theory
Truhlar, D.G. [Univ. of Minnesota, Minneapolis (United States)
1993-12-01T23:59:59.000Z
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.
Benchmarking Nuclear Fission Theory
Bertsch, G F; Nazarewicz, W; Talou, P
2015-01-01T23:59:59.000Z
We suggest a small set of fission observables to be used as test cases for validation of theoretical calculations. The purpose is to provide common data to facilitate the comparison of different fission theories and models. The proposed observables are chosen from fission barriers, spontaneous fission lifetimes, fission yield characteristics, and fission isomer excitation energies.
Benchmarking Nuclear Fission Theory
G. F. Bertsch; W. Loveland; W. Nazarewicz; P. Talou
2015-02-20T23:59:59.000Z
We suggest a small set of fission observables to be used as test cases for validation of theoretical calculations. The purpose is to provide common data to facilitate the comparison of different fission theories and models. The proposed observables are chosen from fission barriers, spontaneous fission lifetimes, fission yield characteristics, and fission isomer excitation energies.
Identification in Prediction Theory
Bielefeld, University of
Identification in Prediction Theory Lars BÂ¨aumer Bielefeld 2000 #12;Acknowledgment I wish to thank remarks. 1 #12;Contents 1 Introduction 3 2 Finite-State Predictability 7 2.1 A Universal Predictor Predictability and Identifiability . . . . . . 30 3.3 Markov Machines for Identification
Structural and biochemical studies of sigma54 transcriptional activation in Aquifex aeolicus
Vidangos, Natasha Keith
2010-01-01T23:59:59.000Z
Hoover, T.R. (2004) Helicobacter pylori FlgR is an enhancer-flagellar system of Helicobacter pylori. Mol. Microbiol. 52,Characterization of Helicobacter pylori ?54 promoter-binding
Gapless superconductivity and string theory
Sergei Khlebnikov
2014-11-06T23:59:59.000Z
Coexistence of superconducting and normal components in nanowires at currents below the critical (a "mixed" state) would have important consequences for the nature and range of potential applications of these systems. For clean samples, it represents a genuine interaction effect, not seen in the mean-field theory. Here we consider properties of such a state in the gravity dual of a strongly coupled superconductor constructed from D3 and D5 branes. We find numerically uniform gapless solutions containing both components but argue that they are unstable against phase separation, as their free energies are not convex. We speculate on the possible nature of the resulting non-uniform sate ("emulsion") and draw analogies between that state and the familiar mixed state of a type II superconductor in a magnetic field.
Comput. Bid. Med. Vol. 26, No. 1. pp. V-24, 1996 Copyright 0 I996 Elscvier Science Ltd
Breitling, Rainer
and control of biochemical reactions. A power law approximation is used to express system behavior in terms reaction systems seek to address particular aspects of the modeling problem. Biochemical Systems Theory system involves data that are incomplete, uncertain or unreliable. For instance, a model of a $Author
Hamilton-Jacobi theory in k-cosymplectic field theories
M. de León; S. Vilariño
2013-04-11T23:59:59.000Z
In this paper we extend the geometric formalism of the Hamilton-Jacobi theory for time dependent Mechanics to the case of classical field theories in the k-cosymplectic framework.
Ullmann, G. Matthias
A Generalized Free Energy Perturbation Theory Accounting for End States with DifferingVised Manuscript ReceiVed: NoVember 23, 2010 We present a generalized free energy perturbation theory states of a physical system. It is shown that the present free energy perturbation theory stated
Perturbative quantum field theory in the framework of the fermionic projector
Finster, Felix, E-mail: finster@ur.de [Fakultät für Mathematik, Universität Regensburg, D-93040 Regensburg (Germany)] [Fakultät für Mathematik, Universität Regensburg, D-93040 Regensburg (Germany)
2014-04-15T23:59:59.000Z
We give a microscopic derivation of perturbative quantum field theory, taking causal fermion systems and the framework of the fermionic projector as the starting point. The resulting quantum field theory agrees with standard quantum field theory on the tree level and reproduces all bosonic loop diagrams. The fermion loops are described in a different formalism in which no ultraviolet divergences occur.
The water-benzene interaction: Insight from electronic structure theories Jie Ma,1,2,3
Alfè, Dario
The water-benzene interaction: Insight from electronic structure theories Jie Ma,1,2,3 Dario Alfè,2 theories is challenging. Here we assess the ability of a variety of theories to describe a water-benzene- tween water and benzene. Water benzene is an interesting model system because it is a reasonably small
Theory of Linear Games with Constraints and Its Application to Power Control of Optical Networks
Pavel, Lacra
Theory of Linear Games with Constraints and Its Application to Power Control of Optical Networks connections with classical linear systems theory and finds itself pervasively used in network engineering players. This powerful interpretation allows us to bridge over the theory and the issue of implementation
Beyond heat baths II: Framework for generalized thermodynamic resource theories
Nicole Yunger Halpern
2014-09-27T23:59:59.000Z
Cutting-edge experiments, which involve the nano- and quantum scales, have been united with thermodynamics, which describes macroscopic systems, via resource theories. Resource theories have modeled small-scale exchanges of heat and information. Recently, the models were extended to particle exchanges, and a family of thermodynamic resource theories was proposed to model diverse baths, interactions, and free energies. This paper motivates and details the family's structure and prospective applications. How to model electrochemical, gravitational, magnetic, and other thermodynamic systems is explained. Szilard's engine and Landauer's Principle are generalized, as resourcefulness is shown to be convertible not only between informational and gravitational-energy forms, but also among varied physical degrees of freedom in the thermodynamic limit. Quantum operators associated with extensive variables offer opportunities to explore nonclassical noncommutation. This generalization of thermodynamic resource theories invites the modeling of realistic systems that might be harnessed to test small-scale statistical mechanics experimentally.
Disposal: Science and Theory Disposal: Science and Theory
Benson, Eric R.
Disposal: Science and Theory #12;Disposal: Science and Theory Opciones para la producción de espuma espuma · Sistemas de boquilla #12;Disposal: Science and Theory Requisitos estimados: · Tiempo: 2 a 3 compactas Equipo de respuesta propio de la industria Espuma de aire comprimido #12;Disposal: Science
Disposal: Science and Theory Disposal: Science and Theory
Benson, Eric R.
Disposal: Science and Theory #12;Disposal: Science and Theory Table of Contents · Why Depopulate? · Depopulation Methods · Basics of Foam · Types of Foam Equipment · Science Behind Foam · Implementing Foam Depopulation · Use of Foam in the Field · Conclusions #12;Disposal: Science and Theory "When HPAI outbreaks
Disposal: Science and Theory Disposal: Science and Theory
Benson, Eric R.
Disposal: Science and Theory #12;Disposal: Science and Theory · Field recommendations based of activity Corticosterone EEG, ECG and motion studies · Large scale testing Field scale units Science of Foam #12;Disposal: Science and Theory Cessation Time · Multiple bird species can be depopulated
Disposal: Science and Theory Disposal: Science and Theory
Benson, Eric R.
Disposal: Science and Theory #12;Disposal: Science and Theory 2004 Participación de Bud Malone y la espuma 2009 Ninguna ventaja para el gas Breve historia de la espuma #12;Disposal: Science sistema de boquilla ¿Qué es la espuma? #12;Disposal: Science and Theory · La espuma puede incluir: Una
Mexican contributions to Noncommutative Theories
Vergara, J. David [Instituto de Ciencias Nucleares, UNAM, A. Postal 70-543, Mexico, D.F. Mexico (Mexico); Garcia-Compean, H. [Centro de Investigacion y de Estudios Avanzados del IPN, Unidad Monterrey, Cerro de las Mitras 2565, Col. Obispado, Monterrey N.L. 64060 (Mexico); Departamento de Fisica, Centro de Investigacion y de Estudios Avanzados del IPN, Apdo. Postal 14-740, Mexico D.F. 07000 (Mexico)
2006-09-25T23:59:59.000Z
In this paper we summarize the Mexican contributions to the subject of Noncommutative theories. These contributions span several areas: Quantum Groups, Noncommutative Field Theories, Hopf algebra of renormalization, Deformation Quantization, Noncommutative Gravity, and Noncommutative Quantum Mechanics.
On the theory of superconductivity
Cheng, Kai-Chia
The phenomenon of superconductivity has so for defied all attempts of explanation since it was first discovered in 1911. Although two phenomenological theories have been put forward and proved very successful, yet no atomic theories based on quantum...
Interannual variability of summer biochemical enhancement in relation to mesoscale eddies the 1300-km-long eastern shelf break accompanied by a mesoscale eddy field (Okkonen, 2001a). Eddies occur., 2002). Mesoscale eddies, which penetrate to depths of at least 1000 m (Roden, 1995; Mizobata et al
Ramos, Joe W.
signal-regulated kinase (ERK) in mammalian cells, Int J Biochem Cell Biol (2008), doi:10.1016/j of extracellular signal-regulated kinase (ERK) in mammalian cells 2 3 Joe W. Ramos 2 Department of Natural Products Received in revised form 18 April 20089 Accepted 25 April 200810 Available online xxx11 12 Keywords:13 ERK
Covariant Hamiltonian Field Theory
Jürgen Struckmeier; Andreas Redelbach
2012-05-22T23:59:59.000Z
A consistent, local coordinate formulation of covariant Hamiltonian field theory is presented. Whereas the covariant canonical field equations are equivalent to the Euler-Lagrange field equations, the covariant canonical transformation theory offers more general means for defining mappings that preserve the form of the field equations than the usual Lagrangian description. It is proved that Poisson brackets, Lagrange brackets, and canonical 2-forms exist that are invariant under canonical transformations of the fields. The technique to derive transformation rules for the fields from generating functions is demonstrated by means of various examples. In particular, it is shown that the infinitesimal canonical transformation furnishes the most general form of Noether's theorem. We furthermore specify the generating function of an infinitesimal space-time step that conforms to the field equations.
Quantum control theory and applications: A survey
Daoyi Dong; Ian R Petersen
2011-01-10T23:59:59.000Z
This paper presents a survey on quantum control theory and applications from a control systems perspective. Some of the basic concepts and main developments (including open-loop control and closed-loop control) in quantum control theory are reviewed. In the area of open-loop quantum control, the paper surveys the notion of controllability for quantum systems and presents several control design strategies including optimal control, Lyapunov-based methodologies, variable structure control and quantum incoherent control. In the area of closed-loop quantum control, the paper reviews closed-loop learning control and several important issues related to quantum feedback control including quantum filtering, feedback stabilization, LQG control and robust quantum control.
On strategy of relativistic quantum theory construction
Yuri A. Rylov
2006-01-16T23:59:59.000Z
Two different strategies of the relativistic quantum theory construction are considered and evaluated. The first strategy is the conventional strategy, based on application of the quantum mechanics technique to relativistic systems. This approach cannot solve the problem of pair production. The apparent success of QFT at solution of this problem is conditioned by the inconsistency of QFT, when the commutation relations are incompatible with the dynamic equations. (The inconsistent theory "can solve" practically any problem, including the problem of pair production). The second strategy is based on application of fundamental principles of classical dynamics and those of statistical description to relativistic dynamic systems. It seems to be more reliable, because this strategy does not use quantum principles, and the main problem of QFT (join of nonrelativistic quantum principles with the principles of relativity) appears to be eliminated.
Field Theory and Standard Model
W. Buchmüller; C. Lüdeling
2006-09-18T23:59:59.000Z
This is a short introduction to the Standard Model and the underlying concepts of quantum field theory.
Robert Carroll
2007-11-05T23:59:59.000Z
We show some relations between Ricci flow and quantum theory via Fisher information and the quantum potential.
Superconnections and Index Theory
Kahle, Alexander
2008-01-01T23:59:59.000Z
We investigate index theory in the context of Dirac operators coupled to superconnections. In particular, we prove a local index theorem for such operators, and for families of such operators. We investigate eta-invariants and prove an APS-theorem, and construct a geometric determinant line bundle for families of such operators, computing its curvature and holonomy in terms of familiar index theoretic quantities.
The Theory of Island Biogeography
Landweber, Laura
The Theory of Island Biogeography Robert H. MacArthur and Edward O. Wilson The young biologists" dominated by the collection of data. In The Theory of Island Biogeography they set out to change that by devel- oping a general mathema- tical theory that would make sense of a key ecological problem
Definitions and motivation More theory
Duval, Art
Definitions and motivation Examples More theory The Importance of being Equivalent: The Ubiquity of being Equivalent: #12;Definitions and motivation Examples More theory Fractions Geometry Real life Equivalent: #12;Definitions and motivation Examples More theory Fractions Geometry Real life Summary Equality
Motivation and definitions Dimension theory
Climenhaga, Vaughn
Motivation and definitions Dimension theory Results: old and new Multifractal analysis of Birkhoff averages #12;Motivation and definitions Dimension theory Results: old and new Outline 1 Motivation and definitions A multifractal decomposition Example 2 Dimension theory Quantifying level sets A dynamically
Definitions and motivation More theory
Duval, Art
Definitions and motivation Examples More theory Equivalence relations in mathematics, K-16+ Art;Definitions and motivation Examples More theory Fractions Geometry Real life One reason fractions are hard 2 3 Duval Equivalence relations in mathematics, K-16+ #12;Definitions and motivation Examples More theory
Materials Theory, Modeling and Simulation | ORNL
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Materials Characterization Materials Theory and Simulation Quantum Monte Carlo Density Functional Theory Monte Carlo Ab Initio Molecular Dynamics Chemical and Materials Theory...
Concepts in strong Langmuir turbulence theory
DuBois, D.F.; Rose, H.A.
1990-01-01T23:59:59.000Z
Some of the basic concepts of strong Langmuir turbulence (SLT) theory are reviewed. In SLT system, a major fraction of the turbulent energy is carried by local, time-dependent, nonlinear excitations called cavitons. Modulational instability, localization of Langmuir fields by density fluctuations, caviton nucleation, collapse, and burnout and caviton correlations are reviewed. Recent experimental evidence will be presented for SLT phenomena in the interaction of powerful HF waves with the ionosphere and in laser-plasma interaction experiments. 38 refs., 11 figs.
Matthew James
2014-06-20T23:59:59.000Z
This paper explains some fundamental ideas of {\\em feedback} control of quantum systems through the study of a relatively simple two-level system coupled to optical field channels. The model for this system includes both continuous and impulsive dynamics. Topics covered in this paper include open and closed loop control, impulsive control, optimal control, quantum filtering, quantum feedback networks, and coherent feedback control.
Massey, Adam Lucas
2012-01-01T23:59:59.000Z
Background on Algebraic K-Theory andKH-Theory . . . . . . . .in Algebraic K-Theory . . . . . . . . . . . . . . . Descent
Rhodes, Donna H.
Engineering systems is a field of scholarship focused on developing fundamental theories and methods to address the challenges of large-scale complex systems in context of their socio-technical environments. The authors ...
Dobson, Ian
Change in Stability When Generator Reactive Power Limits are Encountered Ian Dobson and Liming Lu Abstruct-When a generator of a heavily loaded electric power system reaches a reactive power limit bifurcation and reactive power limitations of the power system. Power systems are expected to become more
Bozdogan, Kirkor
2010-08-05T23:59:59.000Z
The lean enterprise system, total quality management, six sigma, theory of constraints, agile manufacturing,
S. Raby; T. Walker; K. S. Babu; H. Baer; A. B. Balantekin; V. Barger; Z. Berezhiani; A. de Gouvea; R. Dermisek; A. Dolgov; P. Fileviez Perez; G. Gabadadze; A. Gal; P. Gondolo; W. Haxton; Y. Kamyshkov; B. Kayser; E. Kearns; B. Kopeliovich; K. Lande; D. Marfatia; R. N. Mohapatra; P. Nath; Y. Nomura; K. A. Olive; J. Pati; S. Profumo; R. Shrock; Z. Tavartkiladze; K. Whisnant; L. Wolfenstein
2008-10-24T23:59:59.000Z
The NSF has chosen the site for the Deep Underground Science and Engineering Laboratory (DUSEL) to be in Lead, South Dakota. In fact, the state of South Dakota has already stepped up to the plate and contributed its own funding for the proposed lab, see http://www.sanfordlaboratoryathomestake.org/index.html. The final decision by NSF for funding the Initial Suite of Experiments for DUSEL will be made early in 2009. At that time the NSF Science Board must make a decision. Of order 200 experimentalists have already expressed an interest in performing experiments at DUSEL. In order to assess the interest of the theoretical community, the Center for Cosmology and Astro-Particle Physics (CCAPP) at The Ohio State University (OSU) organized a 3-day DUSEL Theory Workshop in Columbus, Ohio from April 4 - 6, 2008. The workshop focused on the scientific case for six proposed experiments for DUSEL: long baseline neutrino oscillations, proton decay, dark matter, astrophysical neutrinos, neutrinoless double beta decay and N-Nbar oscillations. The outcome of this workshop is the DUSEL Theory White paper addressing the scientific case at a level which may be useful in the decision making process for policy makers at the NSF and in the U.S. Congress. In order to assess the physics interest in the DUSEL project we have posted the DUSEL Theory White paper on the following CCAPP link http://ccapp.osu.edu/whitepaper.html . Please read the white paper and, if you are interested, use the link to show your support by co-signing the white paper.
A Theory of Operational Equivalence for Interaction Nets
FernÃ¡ndez, Maribel
A Theory of Operational Equivalence for Interaction Nets Maribel Fernâ??andez 1 and Ian Mackie 2 1. In this paper we apply these (now standard) techniques to interactions nets, a graphical programming language in interaction nets since it can be applied to untyped systems, thus all systems of interaction nets are captured
Neutrinos: Theory and Phenomenology
Parke, Stephen
2013-10-22T23:59:59.000Z
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.
Confirming inextensional theory
Seereeram, V. R.; Seffen, K. A.
2014-06-24T23:59:59.000Z
Mansfield exploits the analogy with Tension Field by devising wrinkled specimens of the same geometrical p tions and equivalent boundary conditions, where the highly visible outline of crests and troughs normal to wrinkles gives equivalent information... . On the extension and flexure of cylindrical and spherical thin elastic shells. Philos. Trans. R. Soc. London A 181, 433–480. Ben Amar, M., Pomeau, Y., 1997. Crumpled paper. Proc. R. Soc. London Ser. A 453, 729–755. Calladine, C.R., 1983. Theory of Shell Structures...
Vladimir I. Zverev; Alexander M. Tishin
2009-01-29T23:59:59.000Z
In the given work the first attempt to generalize quantum uncertainty relation on macro objects is made. Business company as one of economical process participants was chosen by the authors for this purpose. The analogies between quantum micro objects and the structures which from the first sight do not have anything in common with physics are given. The proof of generalized uncertainty relation is produced. With the help of generalized uncertainty relation the authors wanted to elaborate a new non-traditional approach to the description of companies' business activity and their developing and try to formulate some advice for them. Thus, our work makes the base of quantum theory of econimics
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AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem Not FoundInformation DOEInformation Summary Big*The Effective Field Theory
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AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power Administration wouldDECOMPOSITION OFSupplemental TechnologySummaryDariuszDark Matter Theory
Theory, Modeling and Computation
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AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del SolStrengthening a solidSynthesis of 2DandEnergy The YearandTheory, Modeling
Qubits from Adinkra Graph Theory via Colored Toric Geometry
Aadel, Y; Benslimane, Z; Sedra, M B; Segui, A
2015-01-01T23:59:59.000Z
We develop a new approach to deal with qubit information systems using toric geometry and its relation to Adinkra graph theory. More precisely, we link three different subjects namely toric geometry, Adinkras and quantum information theory. This one to one correspondence may be explored to attack qubit system problems using geometry considered as a powerful tool to understand modern physics including string theory. Concretely, we examine in some details the cases of one, two, and three qubits, and we find that they are associated with \\bf CP^1, \\bf CP^1\\times CP^1 and \\bf CP^1\\times CP^1\\times CP^1 toric varieties respectively. Using a geometric procedure referred to as colored toric geometry, we show that the qubit physics can be converted into a scenario handling toric data of such manifolds by help of Adinkra graph theory. Operations on toric information can produce universal quantum gates.
Statistical Learning Theory of Protein Dynamics
Haas, Kevin
2013-01-01T23:59:59.000Z
integrated statistical learning and simulation approach tomolecular simulation, using statistical learning theory tomolecular simulation and statistical learning theory of
1. INTRODUCTION It is relatively easy to control linear systems.
Wilamowski, Bogdan Maciej
of the biggest challenges in modern control theory. While linear control system theory has been well developed1. INTRODUCTION It is relatively easy to control linear systems. Unfortunately, in practice most systems are nonlinear. Some of them can be linearized and use well developed linear control theory
Quantum Control: Approach based on Scattering Theory for Non-commutative Markov
Gohm, Rolf
this fits in with the modern view point that control is essentially interconnection of systems. See the book Introduction Modern control theory has frequently used concepts and results from abstract mathematics. The aim of control theory [Ki,Za], i.e. the descrip- tion of the system by an internal state space with in- put
Set Theory as the Unified Scheme for Physics
Andrey V. Novikov-Borodin
2015-01-08T23:59:59.000Z
The process of cognition is analysed to adjust the set theory to physical description. Postulates and basic definitions are revised. The specific sets of predicates, called presets, corresponding to the physical objects identified by an observer during cognition are introduced. Unlike sets, the presets are free of logical or set-theoretical paradoxes and may be consistently used in physical description. Schemes of cognition based on presets are considered. Being different logical systems, the relativistic and quantum theories, observations in modern cosmology cannot be consistently considered in one `unified physical theory', but they are in frames of introduced schemes of cognition.
Semiclassical Theory for Parametric Correlation of Energy Levels
Taro Nagao; Petr Braun; Sebastian Müller; Keiji Saito; Stefan Heusler; Fritz Haake
2006-07-30T23:59:59.000Z
Parametric energy-level correlation describes the response of the energy-level statistics to an external parameter such as the magnetic field. Using semiclassical periodic-orbit theory for a chaotic system, we evaluate the parametric energy-level correlation depending on the magnetic field difference. The small-time expansion of the spectral form factor $K(\\tau)$ is shown to be in agreement with the prediction of parameter dependent random-matrix theory to all orders in $\\tau$.
Poor Theory Notes Toward a Manifesto
Loudon, Catherine
Poor Theory Notes Toward a Manifesto Poor theory is less a theory than a way of proceeding. Poor theory proposes to find ways of making the most of limited resources. Poor theory uses the tools at hand. Poor theory suggests the need to `work around' intransigent problems, when clear solutions
Quantum theory and the role of mind in nature
Henry P. Stapp
2001-03-09T23:59:59.000Z
Orthodox Copenhagen quantum theory renounces the quest to understand the reality in which we are imbedded, and settles for practical rules describing connections between our observations. Many physicist have regarded this renunciation of our effort to describe nature herself as premature, and John von Neumann reformulated quantum theory as a theory of an evolving objective universe interacting with human consciousness. This interaction is associated both in Copenhagen quantum theory and in von Neumann quantum theory with a sudden change that brings the objective physical state of a system in line with a subjectively felt psychical reality. The objective physical state is thereby converted from a material substrate to an informational and dispositional substrate that carries both the information incorporated into it by the psychical realities, and certain dispositions for the occurrence of future psychical realities. The present work examines and proposes solutions to two problems that have appeared to block the development of this conception of nature. The first problem is how to reconcile this theory with the principles of relativistic quantum field theory; the second problem is to understand whether, strictly within quantum theory, a person's mind can affect the activities of his brain, and if so how. Solving the first problem involves resolving a certain nonlocality question. The proposed solution to the second problem is based on a postulated connection between effort, attention, and the quantum Zeno effect. This solution explains on the basis of quantum physics a large amount of heretofore unexplained data amassed by psychologists.
Chu, Shih-I; Carrera, Juan J.
2009-06-17T23:59:59.000Z
stabilized narrow-band continuous-wave #1;cw#2; laser used for the actual spectroscopy. However, suitable narrow-band-width cw sources rarely exist at high frequencies #3;10#4;, such as vacuum-ultraviolet #1;vuv#2; and extreme-ultraviolet #1;xuv#2; radiations...;. If the high-frequency comb laser can be generated successfully, there will be a number of applications such as vuv-xuv holography, nanolithography, x-ray atomic clocks, and for the testing of fundamental theories such as quantum electrodynamics. However...
An algebraic theory of infinite classical lattices II: Axiomatic theory
Don Ridgeway
2005-10-08T23:59:59.000Z
We apply the algebraic theory of infinite classical lattices from Part I to write an axiomatic theory of measurements, based on Mackey's axioms for quantum mechanics. The axioms give a complete theory of measurements in the sense of Haag and Kastler, taking the traditional form of a logic of propositions provided with a classical spectral theorem. The results are expressed in terms of probability distributions of individual measurements. As applications, we give a separation theorem for states by the set of observables and discuss its relationship to the equivalence of ensembles in the thermodynamic-limit program. We also introduce a weak equivalence of states based on the theory.
Periodic relativity: basic framework of the theory
Vikram H. Zaveri
2014-11-25T23:59:59.000Z
An alternative gravity theory is proposed which does not rely on Riemannian geometry and geodesic trajectories. The theory named periodic relativity (PR) does not use the weak field approximation and allows every two body system to deviate differently from the flat Minkowski metric. PR differs from general relativity (GR) in predictions of the proper time intervals of distant objects. PR proposes a definite connection between the proper time interval of an object and gravitational frequency shift of its constituent particles as the object travels through the gravitational field. PR is based on the dynamic weak equivalence principle which equates the gravitational mass with the relativistic mass. PR provides very accurate solutions for the Pioneer anomaly and the rotation curves of galaxies outside the framework of general relativity. PR satisfies Einstein's field equations with respect to the three major GR tests within the solar system and with respect to the derivation of Friedmann equation in cosmology. This article defines the underlying framework of the theory.