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1

Practical and fast quantum random number generation based on photon arrival time relative to external reference  

SciTech Connect (OSTI)

We present a practical high-speed quantum random number generator, where the timing of single-photon detection relative to an external time reference is measured as the raw data. The bias of the raw data can be substantially reduced compared with the previous realizations. The raw random bit rate of our generator can reach 109 Mbps. We develop a model for the generator and evaluate the min-entropy of the raw data. Toeplitz matrix hashing is applied for randomness extraction, after which the final random bits are able to pass the standard randomness tests.

Nie, You-Qi; Zhang, Jun, E-mail: zhangjun@ustc.edu.cn; Pan, Jian-Wei [Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China); Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China); Zhang, Hong-Fei; Wang, Jian [Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China); Zhang, Zhen; Ma, Xiongfeng [Center for Quantum Information, Institute for Interdisciplinary Information Sciences, Tsinghua University, Beijing 100084 (China)

2014-02-03T23:59:59.000Z

2

A Self-timed Ring Based True Random Number Abdelkarim Cherkaoui, Viktor Fischer, Alain Aubert  

E-Print Network [OSTI]

usually provide high bit rate data sequences that pass the standard statistical tests. However, they only streams. Their bit rate is limited by the spectrum of the underlying physical process and by the entropy in Altera Cyclone III and Xilinx Virtex 5 devices provide high quality random bit sequences passing FIPS 140

Boyer, Edmond

3

Quantifiers for randomness of chaotic pseudo-random number generators  

Science Journals Connector (OSTI)

...randomness of chaotic pseudo-random number generators L. De Micco 1 H. A. Larrondo 1...connection with pseudo-random number generators (PRNGs). Workers in the field are...notion to generate pseudo-random number generators (PRNGs) because random numbers are...

2009-01-01T23:59:59.000Z

4

Quantifiers for randomness of chaotic pseudo random number generators  

E-Print Network [OSTI]

We deal with randomness-quantifiers and concentrate on their ability do discern the hallmark of chaos in time-series used in connection with pseudo random number generators (PRNG). Workers in the field are motivated to use chaotic maps for generating PRNGs because of the simplicity of their implementation. Although there exist very efficient general-purpose benchmarks for testing PRNGs, we feel that the analysis provided here sheds additional didactic light on the importance of the main statistical characteristics of a chaotic map, namely, i) its invariant measure and ii) the mixing constant. This is of help in answering two questions that arise in applications, that is, (1) which is the best PRNG among the available ones? and (2) If a given PRNG turns out not to be good enough and a randomization procedure must still be applied to it, which is the best applicable randomization procedure?. Our answer provides a comparative analysis of several quantifiers advanced in the extant literature.

L. De Micco; H. A. Larrondo; A. Plastino; O. A. Rosso

2008-12-11T23:59:59.000Z

5

RNG: A Practitioner's Overview Random Number Generation  

E-Print Network [OSTI]

RNG: A Practitioner's Overview Random Number Generation A Practitioner's Overview Prof. Michael and Monte Carlo Methods Pseudorandom number generation Types of pseudorandom numbers Properties of these pseudorandom numbers Parallelization of pseudorandom number generators New directions for SPRNG Quasirandom

Mascagni, Michael

6

Analysis of Random Number Generators Parijat Naik  

E-Print Network [OSTI]

1 Analysis of Random Number Generators Parijat Naik Department of Computer Science Oregon State generation used in practice and a comparison of their efficiency. The paper focuses on the techniques used Random number generators are used for generating an array of numbers that have a random distribution

7

High speed optical quantum random number generation  

E-Print Network [OSTI]

High speed optical quantum random number generation Martin F¨urst1,2,, Henning Weier1,2, Sebastian, ready-for-use quantum random number generator (QRNG) whose stochastic model is based on the ran- domness directly delivered to a PC, generated at a rate of up to 50 Mbit/s, clearly pass all tests relevant

Weinfurter, Harald

8

Entropy of pseudo-random-number generators  

Science Journals Connector (OSTI)

Since the work of Ferrenberg et al. [Phys. Rev. Lett. 69, 3382 (1992)] some pseudo-random-number generators are known to yield wrong results in cluster Monte Carlo simulations. In this contribution the fundamental mechanism behind this failure is discussed. Almost all random-number generators calculate a new pseudo-random-number xi from preceding values, xi=f(xi?1,xi?2,…,xi?q). Failure of these generators in cluster Monte Carlo simulations and related experiments can be attributed to the low entropy of the production rule f() conditioned on the statistics of the input values xi?1,…,xi?q. Being a measure only of the arithmetic operations in the generator rule, the conditional entropy is independent of the lag in the recurrence or the period of the sequence. In that sense it measures a more profound quality of a random-number generator than empirical tests with their limited horizon.

Stephan Mertens and Heiko Bauke

2004-05-21T23:59:59.000Z

9

Random time series in astronomy  

Science Journals Connector (OSTI)

...Thomas J. Maccarone Random time series in astronomy Simon Vaughan e-mail: simon.vaughan@leicester.ac.uk X-ray and Observational Astronomy Group, Department of Physics and Astronomy, University of Leicester, Leicester LE1...

2013-01-01T23:59:59.000Z

10

SPRNG Parallel Random Number Generators at NERSC  

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

SPRNG SPRNG SPRNG Description The SPRNG libraries of generators produce good quality random numbers, and are also fast. They have been subjected to some of the largest random number tests, with around 10^13 RNs per test. SPRNG provides both FORTRAN and C (also C++) interfaces for the use of the parallel random number generators. Access SPRNG v2.0 is available on Carver (gcc, intel and pgi) and Cray systems (pgi and cce). Use the module utility to load the software. module load sprng Using SPRNG On Cray systems: ftn sprng_test.F $SPRNG -lsprng On Carver: mpif90 sprng_test.F $SPRNG -lsprng Documentation On Carver there are various documents in $SPRNG/DOCS and various examples in $SPRNG/EXAMPLES. See the SPRNG web site at Florida State University for complete details. For help using SPRNG at NERSC contact the

11

On the Construction of Random Number Generators and Random Function Generators  

Science Journals Connector (OSTI)

Blum, Micali (1982), Yao (1982), Goldreich, Goldwasser and Micali (1984), and Luby, Rackoff (1986) have constructed random number generators, random function generators and random permutation generators

C. P. Schnorr

1988-01-01T23:59:59.000Z

12

A Closer Look at Security in Random Number Generators Design  

E-Print Network [OSTI]

A Closer Look at Security in Random Number Generators Design Viktor Fischer Laboratoire Hubert of random number generation is crucial for the im- plementation of cryptographic systems. Random numbers are often used in key generation processes, authentication protocols, zeroknowledge pro- tocols, padding

Paris-Sud XI, Université de

13

Reducing the Cost of Generating APH-distributed Random Numbers  

E-Print Network [OSTI]

Reducing the Cost of Generating APH-distributed Random Numbers Philipp Reinecke1 , Mikl´os Telek2 for generating PH-distributed random numbers. In this work, we discuss algorithms for generating random numbers from PH distributions and propose two algorithms for reducing the cost associated with generating

Telek, Miklós

14

A High Speed, Post-Processing Free, Quantum Random Number Generator  

E-Print Network [OSTI]

A quantum random number generator (QRNG) based on gated single photon detection of an InGaAs photodiode at GHz frequency is demonstrated. Owing to the extremely long coherence time of each photon, each photons' wavefuntion extends over many gating cycles of the photodiode. The collapse of the photon wavefunction on random gating cycles as well as photon random arrival time detection events are used to generate sequences of random bits at a rate of 4.01 megabits/s. Importantly, the random outputs are intrinsically bias-free and require no post-processing procedure to pass random number statistical tests, making this QRNG an extremely simple device.

J. F. Dynes; Z. L. Yuan; A. W. Sharpe; A. J. Shields

2008-07-25T23:59:59.000Z

15

Betti numbers of random real hypersurfaces and determinants of random symmetric matrices  

E-Print Network [OSTI]

Betti numbers of random real hypersurfaces and determinants of random symmetric matrices Damien Betti numbers of random real hypersurfaces in smooth real projective manifolds. Our upper bounds grow get exponentially small away from mid-dimensional Betti numbers. In order to get these results, we

Paris-Sud XI, Université de

16

Geometric random inner products: A family of tests for random number generators  

Science Journals Connector (OSTI)

We present a computational scheme, GRIP (geometric random inner products), for testing the quality of random number generators. The GRIP formalism utilizes geometric probability techniques to calculate the average scalar products of random vectors distributed in geometric objects, such as circles and spheres. We show that these average scalar products define a family of geometric constants which can be used to evaluate the quality of random number generators. We explicitly apply the GRIP tests to several random number generators frequently used in Monte Carlo simulations, and demonstrate a statistical property for good random number generators.

Shu-Ju Tu and Ephraim Fischbach

2003-01-28T23:59:59.000Z

17

Postprocessing for quantum random-number generators: Entropy evaluation and randomness extraction  

Science Journals Connector (OSTI)

Quantum random-number generators (QRNGs) can offer a means to generate information-theoretically provable random numbers, in principle. In practice, unfortunately, the quantum randomness is inevitably mixed with classical randomness due to classical noises. To distill this quantum randomness, one needs to quantify the randomness of the source and apply a randomness extractor. Here, we propose a generic framework for evaluating quantum randomness of real-life QRNGs by min-entropy, and apply it to two different existing quantum random-number systems in the literature. Moreover, we provide a guideline of QRNG data postprocessing for which we implement two information-theoretically provable randomness extractors: Toeplitz-hashing extractor and Trevisan's extractor.

Xiongfeng Ma; Feihu Xu; He Xu; Xiaoqing Tan; Bing Qi; Hoi-Kwong Lo

2013-06-21T23:59:59.000Z

18

Pseudorandom number generators based on random covers for finite groups  

E-Print Network [OSTI]

Pseudorandom number generators based on random covers for finite groups Pascal Marquardt Pavol describe a new approach for construct- ing pseudorandom number generators using random covers for large- ness of binary sequences generated from these generators. We successfully carry out an extensive test

Trung, Tran van

19

The Lattice Structure of Pseudo-Random Number Generators  

Science Journals Connector (OSTI)

...Structure of Pseudo-Random Number Generators B. D. Ripley The pairs, triples...congruential pseudo-random number generators are known to lie on a lattice, and...in the quality of the output of the generator. Various characteristics of the lattices...

1983-01-01T23:59:59.000Z

20

Using random number generators in Monte Carlo simulations  

Science Journals Connector (OSTI)

One of the standard tests for Monte Carlo algorithms and for testing random number generators is the two-dimensional Ising model. We show that at least in the present case, where we study the two-state clock model, good random number generators can give inconsistent values for the critical temperature.

F. J. Resende and B. V. Costa

1998-10-01T23:59:59.000Z

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


21

Quantum random-number generator based on a photon-number-resolving detector  

Science Journals Connector (OSTI)

We demonstrated a high-efficiency quantum random number generator which takes inherent advantage of the photon number distribution randomness of a coherent light source. This scheme was realized by comparing the photon flux of consecutive pulses with a photon number resolving detector. The random bit generation rate could reach 2.4 MHz with a system clock of 6.0 MHz, corresponding to a random bit generation efficiency as high as 40%. The random number files passed all the stringent statistical tests.

Min Ren; E Wu; Yan Liang; Yi Jian; Guang Wu; Heping Zeng

2011-02-23T23:59:59.000Z

22

Random Number Generation for Petascale Quantum Monte Carlo  

SciTech Connect (OSTI)

The quality of random number generators can affect the results of Monte Carlo computations, especially when a large number of random numbers are consumed. Furthermore, correlations present between different random number streams in a parallel computation can further affect the results. The SPRNG software, which the author had developed earlier, has pseudo-random number generators (PRNGs) capable of producing large numbers of streams with large periods. However, they had been empirically tested on only thousand streams earlier. In the work summarized here, we tested the SPRNG generators with over a hundred thousand streams, involving over 10^14 random numbers per test, on some tests. We also tested the popular Mersenne Twister. We believe that these are the largest tests of PRNGs, both in terms of the numbers of streams tested and the number of random numbers tested. We observed defects in some of these generators, including the Mersenne Twister, while a few generators appeared to perform well. We also corrected an error in the implementation of one of the SPRNG generators.

Ashok Srinivasan

2010-03-16T23:59:59.000Z

23

Some remarks on Betti numbers of random polygon Clment Dombry  

E-Print Network [OSTI]

Some remarks on Betti numbers of random polygon spaces Clment Dombry and Christian Mazza September be approached by computing Betti numbers, the Euler characteristics, or the related Poincar´e poly- nomial. We study the average values of Betti numbers of dimension pn when pn as n . We also focus

Paris-Sud XI, Université de

24

Fast quantum-optical random-number generators  

Science Journals Connector (OSTI)

In this paper we study experimentally the properties of three types of quantum -optical random-number generators and characterize them using the available National Institute for Standards and Technology statistical tests, as well as four alternate tests. The generators are characterized by a trade-off between, on one hand, the rate of generation of random bits and, on the other hand, the degree of randomness of the series which they deliver. We describe various techniques aimed at maximizing this rate without diminishing the quality (degree of randomness) of the series generated by it.

Thomas Durt; Carlos Belmonte; Louis-Philippe Lamoureux; Krassimir Panajotov; Frederik Van den Berghe; Hugo Thienpont

2013-02-25T23:59:59.000Z

25

The average number of distinct sites visited by a random walker on random graphs  

E-Print Network [OSTI]

We study the linear large $n$ behavior of the average number of distinct sites $S(n)$ visited by a random walker after $n$ steps on a large random graph. An expression for the graph topology dependent prefactor $B$ in $S(n) = Bn$ is proposed. We use generating function techniques to relate this prefactor to the graph adjacency matrix and then devise message-passing equations to calculate its value. Numerical simulations are performed to evaluate the agreement between the message passing predictions and random walk simulations on random graphs. Scaling with system size and average graph connectivity are also analysed.

De Bacco, Caterina; Sollich, Peter

2015-01-01T23:59:59.000Z

26

Improving random number generators by chaotic Application in data hiding  

E-Print Network [OSTI]

Improving random number generators by chaotic iterations Application in data hiding Christophe of this new generator are improved: the generated sequences can pass all the DieHARD statistical test suite. In addition, this generator behaves chaotically, as defined by Devaney. This makes our generator suitable

Paris-Sud XI, Université de

27

Research on the quantifications of chaotic random number generators  

Science Journals Connector (OSTI)

It has been proved that Local-Period phenomena widely exist in any chaotic binary sequences. Among the reasons of Local-Period phenomena, the quantifications of chaotic binary random number generators are the key factors. This paper proposed that different quantifications could make the generated sequences from the same chaotic real value sequence appear different randomness. Moreover, the simulation results illustrated that for the same logistic real value sequence quantified by different quantifications, such as L-bits quantification, C-threshold quantification and Region quantification, Local-Period phenomena are located in different places by binary sequence period detection (BSPD) detecting method. Meanwhile, statistical data inferred that C-threshold quantification has less effect on the randomness of original chaotic real value sequence.

Yan-bin Zheng; Jing Pan; Yu Song; Hai Cheng; Qun Ding

2014-01-01T23:59:59.000Z

28

Quantum random number generator based on spin noise  

Science Journals Connector (OSTI)

We present an implementation of a robust quantum random number generator based on the quantum fluctuations of the collective spin of an alkali-metal vapor. The achieved bit rate is limited by the spin relaxation rate of the alkali-metal atoms 1/T2 to about 1 kbit/s. However, the same physical scheme, which is impervious to limitations posed by single-photon detectors used in current implementations and rests solely on threshold detection, can be extended to solid state systems with a bit rate higher than 1 Gbit/s.

G. E. Katsoprinakis; M. Polis; A. Tavernarakis; A. T. Dellis; I. K. Kominis

2008-05-19T23:59:59.000Z

29

Pseudo-random number generators for Monte Carlo simulations on Graphics Processing Units  

E-Print Network [OSTI]

Basic uniform pseudo-random number generators are implemented on ATI Graphics Processing Units (GPU). The performance results of the realized generators (multiplicative linear congruential (GGL), XOR-shift (XOR128), RANECU, RANMAR, RANLUX and Mersenne Twister (MT19937)) on CPU and GPU are discussed. The obtained speed-up factor is hundreds of times in comparison with CPU. RANLUX generator is found to be the most appropriate for using on GPU in Monte Carlo simulations. The brief review of the pseudo-random number generators used in modern software packages for Monte Carlo simulations in high-energy physics is present.

Demchik, Vadim

2010-01-01T23:59:59.000Z

30

Pseudo-random number generators for Monte Carlo simulations on Graphics Processing Units  

E-Print Network [OSTI]

Basic uniform pseudo-random number generators are implemented on ATI Graphics Processing Units (GPU). The performance results of the realized generators (multiplicative linear congruential (GGL), XOR-shift (XOR128), RANECU, RANMAR, RANLUX and Mersenne Twister (MT19937)) on CPU and GPU are discussed. The obtained speed-up factor is hundreds of times in comparison with CPU. RANLUX generator is found to be the most appropriate for using on GPU in Monte Carlo simulations. The brief review of the pseudo-random number generators used in modern software packages for Monte Carlo simulations in high-energy physics is present.

Vadim Demchik

2010-03-09T23:59:59.000Z

31

Parallel Random Number Generators Based on Large Order Multiple Recursive Generators  

Science Journals Connector (OSTI)

Classical random number generators like Linear Congruential Generators (LCG) and Multiple Recursive Generators (MRG) are popular for large-scale ... needed to construct and parallelize the random number generators

Lih-Yuan Deng; Jyh-Jen Horng Shiau…

2009-01-01T23:59:59.000Z

32

Chaotic oscillation and random-number generation based on nanoscale optical-energy transfer  

E-Print Network [OSTI]

By using nanoscale energy-transfer dynamics and density matrix formalism, we demonstrate theoretically and numerically that chaotic oscillation and random-number generation occur in a nanoscale system. The physical system consists of a pair of quantum dots (QDs), with one QD smaller than the other, between which energy transfers via optical near-field interactions. When the system is pumped by continuous-wave radiation and incorporates a timing delay between two energy transfers within the system, it emits optical pulses. We refer to such QD pairs as nano-optical pulsers (NOPs). Irradiating an NOP with external periodic optical pulses causes the oscillating frequency of the NOP to synchronize with the external stimulus. We find that chaotic oscillation occurs in the NOP population when they are connected by an external time delay. Moreover, by evaluating the time-domain signals by statistical-test suites, we confirm that the signals are sufficiently random to qualify the system as a random-number generator (RNG). This study reveals that even relatively simple nanodevices that interact locally with each other through optical energy transfer at scales far below the wavelength of irradiating light can exhibit complex oscillatory dynamics. These findings are significant for applications such as ultrasmall RNGs.

Makoto Naruse; Song-Ju Kim; Masashi Aono; Hirokazu Hori; Motoichi Ohtsu

2014-12-19T23:59:59.000Z

33

Some remarks on Betti numbers of random polygon Clment Dombry and Christian Mazza y  

E-Print Network [OSTI]

Some remarks on Betti numbers of random polygon spaces Clément Dombry #3; and Christian Mazza y to a random manifold. The complexity of such manifolds can be approached by computing Betti numbers, the Euler characteristics, or the related Poincaré poly- nomial. We study the average values of Betti numbers of dimension p

Recanati, Catherine

34

What is the total Betti number of a random real hypersurface?  

E-Print Network [OSTI]

What is the total Betti number of a random real hypersurface? Damien Gayet, Jean-Yves Welschinger July 12, 2011 Abstract We bound from above the expected total Betti number of a high degree random real of Smith's theory in equivariant homology, that the total Betti number of the real locus of a smooth real

Paris-Sud XI, Université de

35

Lower estimates for the expected Betti numbers of random real hypersurfaces  

E-Print Network [OSTI]

Lower estimates for the expected Betti numbers of random real hypersurfaces Damien Gayet, Jean-Yves Welschinger March 12, 2013 Abstract We estimate from below the expected Betti numbers of real hypersurfaces bundle, random polynomial, Betti numbers 1 Introduction What is the topology of a real hypersurface taken

Paris-Sud XI, Université de

36

Finite-time Lyapunov exponent for a random Ehrenfest gas  

E-Print Network [OSTI]

We consider the motion of a system of free particles moving in a plane with hard scatterers of regular polygonal shape arranged in a random manner. Calling this the Ehrenfest gas which is known to be pseudo-integrable, we propose a finite-time Lyapunov exponent characterizing the dynamics. In the limit of large number of vertices, where polygon tends to a circle, we recover the Lyapunov exponent for the Lorentz gas. To obtain this result, we generalized the reflection law of a pencil of rays incident on a polygonal scatterer in a way that the formula for the circular scatterer is recovered in the limit of infinite vertices. Thus, seemingly paradoxically, chaos seems to emerge from pseudo-chaos.

Sanjay Moudgalya; Sarthak Chandra; Sudhir R. Jain

2014-09-04T23:59:59.000Z

37

Simulating Random Natural Variability in Time-Varying Atmospheric  

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

Simulating Random Natural Variability in Time-Varying Atmospheric Simulating Random Natural Variability in Time-Varying Atmospheric Concentrations of Toxic Gas from Pipeline Ruptures Speaker(s): David J. Wilson Date: February 4, 2004 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Jeiwon Deputy Random time series are found everywhere in nature. The Brownian motion of small particles; the price of assets (stocks) in financial markets; the diffusion of individual molecules through a membrane; the ballistic deposition of nano-particles onto a lattice substrate; and the time-varying concentration fluctuations at a point downwind from a pollution source all have a common dynamic description. All are stochastic processes where the local rate of change of the variable has a natural drift back to some equilibrium state, combined with a random fluctuating component. We will

38

Energy Conversion of Fully Random Thermal Relaxation Times  

E-Print Network [OSTI]

Thermodynamic random processes in thermal systems are generally associated with one or several relaxation times, the inverse of which are formally homogeneous with energy. Here, we show in a precise way that the periodic modification of relaxation times during temperature-constant thermodynamic cycles can be thermodynamically beneficiary to the operator. This result holds as long as the operator who adjusts relaxation times does not attempt to control the randomness associated with relaxation times itself as a Maxwell 'demon' would do. Indirectly, our result also shows that thermal randomness appears satisfactorily described within a conventional quantum-statistical framework, and that the attempts advocated notably by Ilya Prigogine to go beyond a Hilbert space description of quantum statistics do not seem justified - at least according to the present state of our knowledge. Fundamental interpretation of randomness, either thermal or quantum mechanical, is briefly discussed.

François Barriquand

2005-07-26T23:59:59.000Z

39

PHYSICAL REVIEW A 87, 022339 (2013) Fast quantum-optical random-number generators  

E-Print Network [OSTI]

PHYSICAL REVIEW A 87, 022339 (2013) Fast quantum-optical random-number generators Thomas Durt,1 types of quantum -optical random-number generators and characterize them using the available National Institute for Standards and Technology statistical tests, as well as four alternate tests. The generators

Cerf, Nicolas

40

Chapter 2. Random number generators 2.1 linear congruential generators  

E-Print Network [OSTI]

Chapter 2. Random number generators 2.1 linear congruential generators The most commonly available random number generators on computers are based on a linear congruential generator. A linear congruential generator produces a sequence of integers Nj between 0 and M 1 by a recurrence relation of the form NjC1 D a

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


41

Logistic map: A possible random-number generator  

Science Journals Connector (OSTI)

The logistic map is one of the simple systems exhibiting order to chaos transition. In this work we have investigated the possibility of using the logistic map in the chaotic regime (logmap) for a pseudorandom-number generator. To this end we have performed certain statistical tests on the series of numbers obtained from the logmap. We find that the logmap passes these tests satisfactorily and therefore it possesses many properties required of a pseudorandom-number generator.

S. C. Phatak and S. Suresh Rao

1995-04-01T23:59:59.000Z

42

Impact of random numbers on parallel Monte Carlo application  

SciTech Connect (OSTI)

A number of graduate students are involved at various level of research in this project. We investigate the basic issues in materials using Monte Carlo simulations with specific interest in heterogeneous materials. Attempts have been made to seek collaborations with the DOE laboratories. Specific details are given.

Pandey, Ras B.

2002-10-22T23:59:59.000Z

43

Pseudo-random-number generators and the square site percolation threshold  

Science Journals Connector (OSTI)

Selected pseudo-random-number generators are applied to a Monte Carlo study of the two-dimensional square-lattice site percolation model. A generator suitable for high precision calculations is identified from an application specific test of randomness. After extended computation and analysis, an ostensibly reliable value of pc=0.59274598(4) is obtained for the percolation threshold.

Michael J. Lee

2008-09-25T23:59:59.000Z

44

Betti numbers of random nodal sets of elliptic pseudo-differential operators  

E-Print Network [OSTI]

Betti numbers of random nodal sets of elliptic pseudo-differential operators Damien Gayet Jean with some Lebesgue measure, we estimate from above, as L grows to infinity, the Betti numbers], [8], [10], [9]). We there could estimate from above and below the expected value of each Betti number

Boyer, Edmond

45

Laboratory investigation of lateral dispersion within dense arrays of randomly distributed cylinders at transitional Reynolds number  

E-Print Network [OSTI]

Relative (effective) lateral dispersion of a passive solute was examined at transitional Reynolds numbers within a two-dimensional array of randomly distributed circular cylinders of uniform diameter d. The present work ...

Nepf, Heidi

46

Characteristic times of biased random walks on complex networks  

Science Journals Connector (OSTI)

We consider degree-biased random walkers whose probability to move from a node to one of its neighbors of degree k is proportional to k?, where ? is a tuning parameter. We study both numerically and analytically three types of characteristic times, namely (i) the time the walker needs to come back to the starting node, (ii) the time it takes to visit a given node for the first time, and (iii) the time it takes to visit all the nodes of the network. We consider a large data set of real-world networks and we show that the value of ? which minimizes the three characteristic times differs from the value ?min=?1 analytically found for uncorrelated networks in the mean-field approximation. In addition to this, we found that assortative networks have preferentially a value of ?min in the range [?1,?0.5], while disassortative networks have ?min in the range [?0.5,0]. We derive an analytical relation between the degree correlation exponent ? and the optimal bias value ?min, which works well for real-world assortative networks. When only local information is available, degree-biased random walks can guarantee smaller characteristic times than the classical unbiased random walks by means of an appropriate tuning of the motion bias.

Moreno Bonaventura; Vincenzo Nicosia; Vito Latora

2014-01-09T23:59:59.000Z

47

462 IEEE TRANSACTIONS ON INFORMATION THEORY, VOL. 44, NO. 2, MARCH 1998 Source Codes as Random Number Generators  

E-Print Network [OSTI]

Number Generators Karthik Visweswariah, Student Member, IEEE, Sanjeev R. Kulkarni, Senior Member, IEEE, and Sergio Verd´u, Fellow, IEEE Abstract--A random number generator generates fair coin flips by processing deterministically an arbitrary source of nonideal randomness. An optimal random number generator generates

Verdú, Sergio

48

Random Number Hardware Generator Using Geiger-Mode Avalanche Photo Detector  

E-Print Network [OSTI]

This paper presents the physical concept and test results of sample data of the high-speed hardware true random number generator design based on typically used for High Energy Physics hardware. Main features of this concept are the high speed of the true random numbers generation (tens of Mbt/s), miniature size and estimated lower production cost. This allows the use of such a device not only in large companies and government offices but for the end-user data cryptography, in classrooms, in scientific Monte-Carlo simulations, computer games and any other place where large number of true random numbers is required. The physics of the operations principle of using a Geiger-mode avalanche photo detector is discussed and the high quality of the data collected is demonstrated.

Beznosko, D; Duspayev, A; Tailakov, A; Yessenov, M

2015-01-01T23:59:59.000Z

49

Robust random number generation using steady-state emission of gain-switched laser diodes  

SciTech Connect (OSTI)

We demonstrate robust, high-speed random number generation using interference of the steady-state emission of guaranteed random phases, obtained through gain-switching a semiconductor laser diode. Steady-state emission tolerates large temporal pulse misalignments and therefore significantly improves the interference quality. Using an 8-bit digitizer followed by a finite-impulse-response unbiasing algorithm, we achieve random number generation rates of 8 and 20?Gb/s, for laser repetition rates of 1 and 2.5?GHz, respectively, with a ±20% tolerance in the interferometer differential delay. We also report a generation rate of 80?Gb/s using partially phase-correlated short pulses. In relation to the field of quantum key distribution, our results confirm the gain-switched laser diode as a suitable light source, capable of providing phase-randomized coherent pulses at a clock rate of up to 2.5?GHz.

Yuan, Z. L., E-mail: zhiliang.yuan@crl.toshiba.co.uk; Lucamarini, M.; Dynes, J. F.; Fröhlich, B.; Plews, A.; Shields, A. J. [Toshiba Research Europe Limited, Cambridge Research Laboratory, 208 Cambridge Science Park, Milton Road, Cambridge CB4 0GZ (United Kingdom)

2014-06-30T23:59:59.000Z

50

AN OPEN-SOURCE MULTI-FPGA MODULAR SYSTEM FOR FAIR BENCHMARKING OF TRUE RANDOM NUMBER GENERATORS  

E-Print Network [OSTI]

AN OPEN-SOURCE MULTI-FPGA MODULAR SYSTEM FOR FAIR BENCHMARKING OF TRUE RANDOM NUMBER GENERATORS: patrick.haddad@st.com ABSTRACT True Random Number Generators (TRNG) are cryptographic primitives upload their configuration bitstream to the remote FPGA and download random data generated in the same

Paris-Sud XI, Université de

51

An Observed-Data-Consistent Approach to the Assignment of Bit Values in a Quantum Random Number Generator  

E-Print Network [OSTI]

The majority of Quantum Random Number Generators (QRNG) are designed as converters of a continuous quantum random variable into a discrete classical random bit value. For the resulting random bit sequence to be minimally biased, the conversion process demands an experimenter to fully characterize the underlying quantum system and implement parameter estimation routines. Here we show that conventional approaches to parameter estimation (such as e.g. {\\it Maximum Likelihood Estimation}) used on a finite QRNG data sample without caution may introduce binning bias and lead to overestimation of the randomness of the QRNG output. To bypass these complications, we develop an alternative conversion approach based on the Bayesian statistical inference method. We illustrate our approach using experimental data from a time-of-arrival QRNG and numerically simulated data from a vacuum homodyning QRNG. Side-by-side comparison with the conventional conversion technique shows that our method provides an automatic on-line bias control and naturally bounds the best achievable QRNG bit rate for a given measurement record.

Pavel Lougovski; Raphael Pooser

2014-04-23T23:59:59.000Z

52

Extended Coherence Time with Atom-Number Squeezed Sources  

E-Print Network [OSTI]

Coherence properties of Bose-Einstein condensates offer the potential for improved interferometric phase contrast. However, decoherence effects due to the mean-field interaction shorten the coherence time, thus limiting potential sensitivity. In this work, we demonstrate increased coherence times with number squeezed states in an optical lattice using the decay of Bloch oscillations to probe the coherence time. We extend coherence times by a factor of 2 over those expected with coherent state BEC interferometry. We observe quantitative agreement with theory both for the degree of initial number squeezing as well as for prolonged coherence times.

Wei Li; Ari K. Tuchman; Hui-Chun Chien; Mark A. Kasevich

2006-09-02T23:59:59.000Z

53

Extended Coherence Time with Atom-Number Squeezed States  

SciTech Connect (OSTI)

Coherence properties of Bose-Einstein condensates offer the potential for improved interferometric phase contrast. However, decoherence effects due to the mean-field interaction shorten the coherence time, thus limiting potential sensitivity. In this work, we demonstrate increased coherence times with number squeezed states in an optical lattice using the decay of Bloch oscillations to probe the coherence time. We extend coherence times by a factor of 2 over those expected with coherent state Bose-Einstein condensate interferometry. We observe quantitative agreement with theory both for the degree of initial number squeezing as well as for prolonged coherence times.

Li Wei; Tuchman, Ari K.; Chien, H.-C.; Kasevich, Mark A. [Physics Department, Stanford University, Stanford, California 94305 (United States)

2007-01-26T23:59:59.000Z

54

Infinite Randomness Expansion and Amplification with a Constant Number of Devices  

E-Print Network [OSTI]

We present a device-independent randomness expansion protocol, involving only a constant number of non-signaling quantum devices, that achieves \\emph{infinite expansion}: starting with $m$ bits of uniform private randomness, the protocol can produce an unbounded amount of certified randomness that is $\\exp(-\\Omega(m^{1/3}))$-close to uniform and secure against a quantum adversary. The only parameters which depend on the size of the input are the soundness of the protocol and the security of the output (both are inverse exponential in $m$). This settles a long-standing open problem in the area of randomness expansion and device-independence. The analysis of our protocols involves overcoming fundamental challenges in the study of \\emph{adaptive} device-independent protocols. Our primary technical contribution is the design and analysis of device-independent protocols which are \\emph{Input Secure}; that is, their output is guaranteed to be secure against a quantum eavesdropper, \\emph{even if the input randomness was generated by that same eavesdropper}! The notion of Input Security may be of independent interest to other areas such as device-independent quantum key distribution.

Matthew Coudron; Henry Yuen

2014-04-01T23:59:59.000Z

55

Stochastic calculus for uncoupled continuous-time random walks  

Science Journals Connector (OSTI)

The continuous-time random walk (CTRW) is a pure-jump stochastic process with several applications not only in physics but also in insurance, finance, and economics. A definition is given for a class of stochastic integrals driven by a CTRW, which includes the It? and Stratonovich cases. An uncoupled CTRW with zero-mean jumps is a martingale. It is proved that, as a consequence of the martingale transform theorem, if the CTRW is a martingale, the It? integral is a martingale too. It is shown how the definition of the stochastic integrals can be used to easily compute them by Monte Carlo simulation. The relations between a CTRW, its quadratic variation, its Stratonovich integral, and its It? integral are highlighted by numerical calculations when the jumps in space of the CTRW have a symmetric Lévy ?-stable distribution and its waiting times have a one-parameter Mittag-Leffler distribution. Remarkably, these distributions have fat tails and an unbounded quadratic variation. In the diffusive limit of vanishing scale parameters, the probability density of this kind of CTRW satisfies the space-time fractional diffusion equation (FDE) or more in general the fractional Fokker-Planck equation, which generalizes the standard diffusion equation, solved by the probability density of the Wiener process, and thus provides a phenomenologic model of anomalous diffusion. We also provide an analytic expression for the quadratic variation of the stochastic process described by the FDE and check it by Monte Carlo.

Guido Germano; Mauro Politi; Enrico Scalas; René L. Schilling

2009-06-05T23:59:59.000Z

56

Modeling Massive Amount of Experimental Data with Large Random Matrices in a Real-Time  

E-Print Network [OSTI]

of the (random) data matrix. In [1], the idea of modeling Big Data with (large) random matrices was proposed in the framework of Big Data. These series works [1]­[3] clearly articulated the ideas and treated the necessary1 Modeling Massive Amount of Experimental Data with Large Random Matrices in a Real-Time UWB

Qiu, Robert Caiming

57

Randomly accelerated particle in a box: Mean absorption time for partially absorbing and inelastic boundaries  

E-Print Network [OSTI]

Randomly accelerated particle in a box: Mean absorption time for partially absorbing and inelastic which is randomly accelerated by Gaussian white noise on the line segment 0 x 1 and is absorbed as soon accelerated particle which moves on the half line x 0 with an absorbing boundary at x=0. The motion

58

Mixing time for the Ising model and random walks  

E-Print Network [OSTI]

3.2.2 The Ising model on trees . . . . . . . .I Mixing time for the Ising model 2 Mixing evolutionmean-field Ising model 2.1 Introduction . . . . . . . . . .

Ding, Jian

2011-01-01T23:59:59.000Z

59

Random center vortex lines in continuous 3D space-time  

E-Print Network [OSTI]

We present a model of center vortices, represented by closed random lines in continuous 2+1- dimensional space- time. These random lines are modeled as being piece-wise linear and an ensemble is generated by Monte Carlo methods. The physical space in which the vortex lines are defined is a cuboid with periodic boundary conditions. Besides moving, growing and shrinking of the vortex configuration, also reconnections are allowed. Our ensemble therefore contains not a fixed, but a variable number of closed vortex lines. This is expected to be important for realizing the deconfining phase transition. Using the model, we study both vortex percolation and the potential V (R) between quark and anti-quark as a function of distance R at different vortex densities, vortex segment lengths, reconnection conditions and at different temperatures. We have found three deconfinement phase transitions, as a function of density, as a function of vortex segment length, and as a function of temperature. The model reproduces the qualitative features of confinement physics seen in SU(2) Yang-Mills theory.

Roman Höllwieser; Derar Altarawneh; Michael Engelhardt

2014-11-26T23:59:59.000Z

60

Emergence of randomness and arrow of time in quantum walks  

E-Print Network [OSTI]

Quantum walks are powerful tools not only for constructing the quantum speedup algorithms but also for describing specific models in physical processes. Furthermore, the discrete time quantum walk has been experimentally ...

Shikano, Yutaka

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


61

On the time arrows, and randomness in cosmological signals  

E-Print Network [OSTI]

Arrows of time - thermodynamical, cosmological, electromagnetic, quantum mechanical, psychological - are basic properties of Nature. For a quantum system-bath closed system the de-correlated initial conditions and no-memory (Markovian) dynamics are outlined as necessary conditions for the appearance of the thermodynamical arrow. The emergence of the arrow for the system evolving according to non-unitary dynamics due to the presence of the bath, then, is a result of limited observability, and we conjecture the arrow in the observable Universe as determined by the dark sector acting as a bath. The voids in the large scale matter distribution induce hyperbolicity of the null geodesics, with possible observational consequences.

V. G. Gurzadyan; S. Sargsyan; G. Yegorian

2013-02-21T23:59:59.000Z

62

Scalable parallel physical random number generator based on a superluminescent LED  

E-Print Network [OSTI]

We describe an optoelectronic system for simultaneously generating parallel, independent streams of random bits using spectrally separated noise signals obtained from a single optical source. Using a pair of non-overlapping spectral filters and a fiber-coupled superluminescent light-emitting diode (SLED), we produced two independent 10 Gb/s random bit streams, for a cumulative generation rate of 20 Gb/s. The system relies principally on chip-based optoelectronic components that could be integrated in a compact, economical package.

Xiaowen Li; Adam B Cohen; Thomas E Murphy; Rajarshi Roy

2011-03-15T23:59:59.000Z

63

USING CUMULATIVE NUMBER DENSITIES TO COMPARE GALAXIES ACROSS COSMIC TIME  

SciTech Connect (OSTI)

Comparing galaxies across redshifts at fixed cumulative number density is a popular way to estimate the evolution of specific galaxy populations. This method ignores scatter in mass accretion histories and galaxy-galaxy mergers, which can lead to errors when comparing galaxies over large redshift ranges (?z > 1). We use abundance matching in the ?CDM paradigm to estimate the median change in cumulative number density with redshift and provide a simple fit (+0.16 dex per unit ?z) for progenitors of z = 0 galaxies. We find that galaxy descendants do not evolve in the same way as galaxy progenitors, largely due to scatter in mass accretion histories. We also provide estimates for the 1? range of cumulative number densities corresponding to galaxy progenitors and descendants. Finally, we discuss some limits on cumulative number density comparisons, which arise due to difficulties measuring physical quantities (e.g., stellar mass) consistently across redshifts. A public tool to calculate cumulative number density evolution for galaxies, as well as approximate halo masses, is available online.

Behroozi, Peter S.; Wechsler, Risa H. [Kavli Institute for Particle Astrophysics and Cosmology, SLAC National Accelerator Laboratory, Stanford, CA 94305 (United States)] [Kavli Institute for Particle Astrophysics and Cosmology, SLAC National Accelerator Laboratory, Stanford, CA 94305 (United States); Marchesini, Danilo [Department of Physics and Astronomy, Tufts University, Medford, MA 02155 (United States)] [Department of Physics and Astronomy, Tufts University, Medford, MA 02155 (United States); Muzzin, Adam [Leiden Observatory, Leiden University, P.O. Box 9513, 2300 RA Leiden (Netherlands)] [Leiden Observatory, Leiden University, P.O. Box 9513, 2300 RA Leiden (Netherlands); Papovich, Casey [Department of Physics and Astronomy, Texas A and M University, College Station, TX 77843 (United States)] [Department of Physics and Astronomy, Texas A and M University, College Station, TX 77843 (United States); Stefanon, Mauro [Physics and Astronomy Department, University of Missouri, Columbia, MO 65211 (United States)] [Physics and Astronomy Department, University of Missouri, Columbia, MO 65211 (United States)

2013-11-01T23:59:59.000Z

64

Service Identification in TCP/IP: Well-Known versus Random Port Numbers  

E-Print Network [OSTI]

The sixteen-bit well-known port number is often overlooked as a network identifier in Internet communications. Its purpose at the most fundamental level is only to demultiplex flows of traffic. Several unintended uses of ...

Masiello, Elizabeth

2006-01-11T23:59:59.000Z

65

Continuous-time random-walk model of transport in variably saturated heterogeneous porous media  

Science Journals Connector (OSTI)

We propose a unified physical framework for transport in variably saturated porous media. This approach allows fluid flow and solute migration to be treated as ensemble averages of fluid and solute particles, respectively. We consider the cases of homogeneous and heterogeneous porous materials. Within a fractal mobile-immobile continuous time random-walk framework, the heterogeneity will be characterized by algebraically decaying particle retention times. We derive the corresponding (nonlinear) continuum-limit partial differential equations and we compare their solutions to Monte Carlo simulation results. The proposed methodology is fairly general and can be used to track fluid and solutes particles trajectories for a variety of initial and boundary conditions.

Andrea Zoia; Marie-Christine Néel; Andrea Cortis

2010-03-04T23:59:59.000Z

66

Special Issue: Space, Time and Number Population clocks: motor timing with  

E-Print Network [OSTI]

from the ability of recur- rent neural networks to generate self-sustained, complex, time with strong internal connections capable of self-sustained activity, whereas sensory timing depends

Buonomano, Dean

67

Observations of Random Walk of the Ground In Space and Time  

SciTech Connect (OSTI)

We present results of micron-resolution measurements of the ground motions in large particle accelerators over the range of spatial scales L from several meters to tens of km and time intervals T from minutes to several years and show that in addition to systematic changes due to tides or slow drifts, there is a stochastic component which has a 'random-walk' character both in time and in space. The measured mean square of the relative displacement of ground elements scales as dY{sup 2} {approx} ATL over broad range of the intervals, and the site dependent constant A is of the order of 10{sup -5{+-}1} {micro}m{sup 2}/(s{center_dot}m).

Shiltsev, Vladimir; /Fermilab

2010-01-01T23:59:59.000Z

68

Number  

Office of Legacy Management (LM)

' ' , /v-i 2 -i 3 -A, This dow'at consists ~f--~-_,_~~~p.~,::, Number -------of.-&--copies, 1 Series.,-a-,-. ! 1 THE UNIVERSITY OF ROCHESTER 1; r-.' L INTRAMURALCORRESPONDENCE i"ks' 3 2.. September 25, 1947 Memo.tor Dr. A. H, Dovdy . From: Dr. H. E, Stokinger Be: Trip Report - Mayvood Chemical Works A trip vas made Nednesday, August 24th vith Messrs. Robert W ilson and George Sprague to the Mayvood Chemical F!orks, Mayvood, New Jersey one of 2 plants in the U.S.A. engaged in the production of thorium compounds. The purpose of the trip vas to: l 1. Learn the type of chemical processes employed in the thorium industry (thorium nitrate). 2. Survey conditions of eeosure of personnel associated vith these chemical processes. 3. Obtain samples of atmospheric contaminants in the plant, as

69

Worstcase time bounds for MAXkSAT w.r.t. the number of variables  

E-Print Network [OSTI]

Worst­case time bounds for MAX­k­SAT w.r.t. the number of variables using local search #3; EDWARD A­trivial upper bounds w.r.t. the number of variables were known for MAX­SAT and MAX­2­SAT. An a for the exact solution of MAX­k­SAT / MAX­SAT. However, the exponential­time bounds obtained in this way are w.r

Hirsch, Edward A.

70

Black-box System Testing of Real-Time Embedded Systems Using Random and Search-based Testing  

E-Print Network [OSTI]

of nuclear reactors and flying systems). Testing RTES is particularly chal- lenging since they operateBlack-box System Testing of Real-Time Embedded Systems Using Random and Search-based Testing Andrea. Testing real-time embedded systems (RTES) is in many ways chal- lenging. Thousands of test cases can

Boyer, Edmond

71

Continuous time random walk analysis of solute transport in fractured porous media  

SciTech Connect (OSTI)

The objective of this work is to discuss solute transport phenomena in fractured porous media, where the macroscopic transport of contaminants in the highly permeable interconnected fractures can be strongly affected by solute exchange with the porous rock matrix. We are interested in a wide range of rock types, with matrix hydraulic conductivities varying from almost impermeable (e.g., granites) to somewhat permeable (e.g., porous sandstones). In the first case, molecular diffusion is the only transport process causing the transfer of contaminants between the fractures and the matrix blocks. In the second case, additional solute transfer occurs as a result of a combination of advective and dispersive transport mechanisms, with considerable impact on the macroscopic transport behavior. We start our study by conducting numerical tracer experiments employing a discrete (microscopic) representation of fractures and matrix. Using the discrete simulations as a surrogate for the 'correct' transport behavior, we then evaluate the accuracy of macroscopic (continuum) approaches in comparison with the discrete results. However, instead of using dual-continuum models, which are quite often used to account for this type of heterogeneity, we develop a macroscopic model based on the Continuous Time Random Walk (CTRW) framework, which characterizes the interaction between the fractured and porous rock domains by using a probability distribution function of residence times. A parametric study of how CTRW parameters evolve is presented, describing transport as a function of the hydraulic conductivity ratio between fractured and porous domains.

Cortis, Andrea; Cortis, Andrea; Birkholzer, Jens

2008-06-01T23:59:59.000Z

72

Upscaling solute transport in naturally fractured porous media with the continuous time random walk method  

SciTech Connect (OSTI)

Solute transport in fractured porous media is typically 'non-Fickian'; that is, it is characterized by early breakthrough and long tailing and by nonlinear growth of the Green function-centered second moment. This behavior is due to the effects of (1) multirate diffusion occurring between the highly permeable fracture network and the low-permeability rock matrix, (2) a wide range of advection rates in the fractures and, possibly, the matrix as well, and (3) a range of path lengths. As a consequence, prediction of solute transport processes at the macroscale represents a formidable challenge. Classical dual-porosity (or mobile-immobile) approaches in conjunction with an advection-dispersion equation and macroscopic dispersivity commonly fail to predict breakthrough of fractured porous media accurately. It was recently demonstrated that the continuous time random walk (CTRW) method can be used as a generalized upscaling approach. Here we extend this work and use results from high-resolution finite element-finite volume-based simulations of solute transport in an outcrop analogue of a naturally fractured reservoir to calibrate the CTRW method by extracting a distribution of retention times. This procedure allows us to predict breakthrough at other model locations accurately and to gain significant insight into the nature of the fracture-matrix interaction in naturally fractured porous reservoirs with geologically realistic fracture geometries.

Geiger, S.; Cortis, A.; Birkholzer, J.T.

2010-04-01T23:59:59.000Z

73

Training an Active Random Field for Real-Time Image Denoising  

E-Print Network [OSTI]

, CRF training, Fields of Experts, image denoising. EDICS: TEC-RST I. INTRODUCTION Many real-world.g. material science), a unique energy function that can be described mathematically exists and can accurately on Markov Random Field (MRF) or Conditional Random Field (CRF) energy functions and obtaining the solution

Barbu, Adrian

74

A Novel Approach to Reduce Ray Tracing Simulation Times by Predicting Number or Rays  

Science Journals Connector (OSTI)

Abstract A ray tracer, specifically designed for concentrating solar power systems, has been developed at the Solar Thermal Energy Research Group (STERG). In most ray tracers a simulation runs until a number of rays, predefined by the user, have been traced. In a novel approach the raytracer uses a user defined tolerable error and confidence interval to predict and automatically trace the required number of rays for a simulation. This reduces computational time as only the minimum required number of rays are traced. This method has not been incorporated into any of the openly available ray tracers. The method and algorithm incorporated into the STERG raytracer are described here. As a validation test case the Eurodish and optimised field layout of Planta Solar 10 plant have been simulated.

S.J. Bode; P. Gauché; D. Griffith

2014-01-01T23:59:59.000Z

75

Airoport(City,Country,NumberOfRunways) Flight(FlightID,Day,DepartCity,DepartTime,ArrCity,ArrTime,PlaneType)  

E-Print Network [OSTI]

to Sidney leave, in alphabetical order. 7. The number of international flights that leave Boston on Thursday the airports without international flight and one not) 9. The French cities from which more than twenty directCity,DepartTime,ArrCity,ArrTime,PlaneType) Plane(PlaneType,NumberOfPassengers) 1. The cities with airport for which the number of runways

76

Fig. 1. Comparison of search times on original logistics problems. Fig 2. Number of variables in logistics formulas after simplification.  

E-Print Network [OSTI]

Fig. 1. Comparison of search times on original logistics problems. Fig 2. Number of variables in logistics formulas after simplification. Fig. 3. Number of clauses in logistics formulas after number of clauses log.a log.b log.c #12; Fig. 4: Solution times for walksat on logistics with different

Kautz, Henry

77

Devils staircase like behavior of the range of random time series associated with the tangled nature of evolution  

E-Print Network [OSTI]

We present empirical evidence that the range of random time series associated with the tangled nature model of evolution exhibits a devils staircase like behavior characterized by logarithmic trend and the universal multi-affine spectrum of scaling exponents xi_c of q leq q_c moments of q-order height-height correlations, whereas for q > q_c the moments behaves logarithmically.

Balankin, A S; Balankin, Alexander S.

2005-01-01T23:59:59.000Z

78

Monthly sunspot number time series analysis and its modeling through autoregressive artificial neural network  

E-Print Network [OSTI]

This study reports a statistical analysis of monthly sunspot number time series and observes non homogeneity and asymmetry within it. Using Mann-Kendall test a linear trend is revealed. After identifying stationarity within the time series we generate autoregressive AR(p) and autoregressive moving average (ARMA(p,q)). Based on minimization of AIC we find 3 and 1 as the best values of p and q respectively. In the next phase, autoregressive neural network (AR-NN(3)) is generated by training a generalized feedforward neural network (GFNN). Assessing the model performances by means of Willmott's index of second order and coefficient of determination, the performance of AR-NN(3) is identified to be better than AR(3) and ARMA(3,1).

Goutami Chattopadhyay; Surajit Chattopadhyay

2012-04-18T23:59:59.000Z

79

Scaling Behavior of the First Arrival Time of a Random-Walking Magnetic Domain  

E-Print Network [OSTI]

CoCr and CoCrPt films and the observation window size (40 µmCo 82 Cr 18 film. Three different time windows of 1, 30, andwindow of space and time in CoCr and CoCrPt alloy films. The

Im, M.-Y.

2009-01-01T23:59:59.000Z

80

Characterization of compounds by time-of-flight measurement utilizing random fast ions  

DOE Patents [OSTI]

An apparatus is described for characterizing the mass of sample and daughter particles, comprising a source for providing sample ions; a fragmentation region wherein a fraction of the sample ions may fragment to produce daughter ion particles; an electrostatic field region held at a voltage level sufficient to effect ion-neutral separation and ion-ion separation of fragments from the same sample ion and to separate ions of different kinetic energy; a detector system for measuring the relative arrival times of particles; and processing means operatively connected to the detector system to receive and store the relative arrival times and operable to compare the arrival times with times detected at the detector when the electrostatic field region is held at a different voltage level and to thereafter characterize the particles. Sample and daughter particles are characterized with respect to mass and other characteristics by detecting at a particle detector the relative time of arrival for fragments of a sample ion at two different electrostatic voltage levels. The two sets of particle arrival times are used in conjunction with the known altered voltage levels to mathematically characterize the sample and daughter fragments. In an alternative embodiment the present invention may be used as a detector for a conventional mass spectrometer. In this embodiment, conventional mass spectrometry analysis is enhanced due to further mass resolving of the detected ions. 8 figs.

Conzemius, R.J.

1989-04-04T23:59:59.000Z

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


81

Characterization of compounds by time-of-flight measurement utilizing random fast ions  

DOE Patents [OSTI]

An apparatus for characterizing the mass of sample and daughter particles, comprising a source for providing sample ions; a fragmentation region wherein a fraction of the sample ions may fragment to produce daughter ion particles; an electrostatic field region held at a voltage level sufficient to effect ion-neutral separation and ion-ion separation of fragments from the same sample ion and to separate ions of different kinetic energy; a detector system for measuring the relative arrival times of particles; and processing means operatively connected to the detector system to receive and store the relative arrival times and operable to compare the arrival times with times detected at the detector when the electrostatic field region is held at a different voltage level and to thereafter characterize the particles. Sample and daughter particles are characterized with respect to mass and other characteristics by detecting at a particle detector the relative time of arrival for fragments of a sample ion at two different electrostatic voltage levels. The two sets of particle arrival times are used in conjunction with the known altered voltage levels to mathematically characterize the sample and daughter fragments. In an alternative embodiment the present invention may be used as a detector for a conventional mass spectrometer. In this embodiment, conventional mass spectrometry analysis is enhanced due to further mass resolving of the detected ions.

Conzemius, Robert J. (Ames, IA)

1989-01-01T23:59:59.000Z

82

Random walks in random environments  

Science Journals Connector (OSTI)

A renormalization-group analysis is carried out of the long-time behavior of random walks in an environment with a positionally random local drift force. It is argued that, independent of the strength of the disorder, the mean-square displacement, ?x2(t)?, is linear in time (i.e., diffusive) for dimensions d?2. In two dimensions, universal tlnt corrections are found and for d=2-?, the behavior is subdiffusive with ?x2(t)??t1-?2.

Daniel S. Fisher

1984-08-01T23:59:59.000Z

83

Program Date Time(s) of Orientation Location Contact Person's Name Phone number Art Conservation Aug. 13 -17 various Winterthur & Old College Ginny Green 302-831-3489  

E-Print Network [OSTI]

Program Date Time(s) of Orientation Location Contact Person's Name Phone number Art Conservation-645-4226 Communication Mon., Aug. 27 9:00 AM Pearson Hall Conference Rm Nancy Signoielli 302-831-8022 Computer., Aug. 23 2:30 PM 204 Evans Hall Kathy Forwood 302-831-2406 Energy & Environmental Policy Mon., Aug. 27

Firestone, Jeremy

84

A numerical and experimental study of the time-evolution of a low Mach number jet  

Science Journals Connector (OSTI)

......temperature, partially ionized plasma bubble within an 1 cm...waves pushed out by the plasma bubble, at later times...produces a high pressure plasma bubble within a glass...connected to a 500-MHz digital oscilloscope...uniform, stationary atmosphere with a density rho0......

A. Raga; H. Sobral; M. Villagrán-Muniz; R. Navarro-González; E. Masciadri

2001-06-01T23:59:59.000Z

85

nature biotechnology volume 27 number 12 december 2009 1099 Because of time and technology limita-  

E-Print Network [OSTI]

to transcription signals or that detect environmental pollutants. Third, an open technology platform based in these courses were not successfully constructed, much less charac- terized and debugged. Even so, by working immaturity of the gene synthesis industry at the time, many of the students' desired DNA parts could

Cai, Long

86

Development of a real-time residue number processor for SAFT inspection. Phase II. Final report, September 1984-April 1986  

SciTech Connect (OSTI)

A high speed SAFT imaging system has been designed using residue number system (RNS) computational methods. The imaging system is based on a new frequency domain correlation process applied to conventional pulse-echo ultrasonic data, wherein the data is collected over a two-dimensional aperture. The resulting three-dimensional data set in x, y, and 'time-of-flight' may be processed by the frequency domain SAFT (FSAFT) system in either real-time or batch (post-test) modes. In the real-time mode it is expected that true flaw recognition would be of primary interest and the resulting images would be competitive with current time-domain SAFT (TSAFT) techniques. However, the greatest benefit of FSAFT is for detailed analysis of critical flaw types using the high speed batch or fast inspection mode. The system's performance results from using custom RNS hardware to speed the correlation process, which for typical sub-volumes of 64 x 128 x 400 sample points would execute in 11 seconds. This rapid execution time includes all memory exchange overhead as well as forward and inverse number theoretic transforms (NTTs) and point spread function (PSF) multiplication. The hardware design concentrated on a custom memory management processor and RNS computational modules. A FORTRAN coded software simulation was developed in conjunction with the analysis phase of this effort. It was determined by analysis and simulation that the PSF is the critical element in the effective use of FSAFT for inspection.

Polky, J.N.

1986-05-01T23:59:59.000Z

87

The Theory of Random Laser Systems  

SciTech Connect (OSTI)

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

Xunya Jiang

2002-06-27T23:59:59.000Z

88

Lattice Boltzmann simulation of solute transport in heterogeneous porous media with conduits to estimate macroscopic continuous time random walk model parameters  

SciTech Connect (OSTI)

Lattice Boltzmann models simulate solute transport in porous media traversed by conduits. Resulting solute breakthrough curves are fitted with Continuous Time Random Walk models. Porous media are simulated by damping flow inertia and, when the damping is large enough, a Darcy's Law solution instead of the Navier-Stokes solution normally provided by the lattice Boltzmann model is obtained. Anisotropic dispersion is incorporated using a direction-dependent relaxation time. Our particular interest is to simulate transport processes outside the applicability of the standard Advection-Dispersion Equation (ADE) including eddy mixing in conduits. The ADE fails to adequately fit any of these breakthrough curves.

Anwar, S.; Cortis, A.; Sukop, M.

2008-10-20T23:59:59.000Z

89

Functions that preserve p-randomness  

E-Print Network [OSTI]

We show that polynomial-time randomness (p-randomness) is preserved under a variety of familiar operations, including addition and multiplication by a nonzero polynomial-time computable real number. These results follow from a general theorem: If $I$ is an open interval in the reals, $f$ is a function mapping $I$ into the reals, and $r$ in $I$ is p-random, then $f(r)$ is p-random provided 1. $f$ is p-computable on the dyadic rational points in $I$, and 2. $f$ varies sufficiently at $r$, i.e., there exists a real constant $C > 0$ such that either (a) $(f(x) - f(r))/(x-r) > C$ for all $x$ in $I$ with $x \

Fenner, Stephen A

2012-01-01T23:59:59.000Z

90

Airoport(City,Country,NumberOfRunways) Flight(FlightID,Day,DepartCity,DepartTime,ArrCity,ArrTime,PlaneType)  

E-Print Network [OSTI]

to Sidney leave, in alphabetical order. 7. The number of international flights that leave Boston on Thursday the airports without international flight and one not) 9. The French cities from which more than twenty direct(PlaneType,NumberOfPassengers) 5. The cities from which international flight leave. SELECT DepartCity FROM (Airport AS A1 INNER

91

Modified discrete random walk with absorption  

E-Print Network [OSTI]

We obtain expected number of arrivals, probability of arrival, absorption probabilities and expected time before absorption for a modified discrete random walk on the (sub)set of integers. In a [pqrs] random walk the particle can move one step forward or backward, stay for a moment in the same state or it can be absorbed immediately in the current state. M[pqrs] is a modified version, where probabilities on both sides of a multiple function barrier M are of different [pqrs] type.

Theo van Uem

2009-03-02T23:59:59.000Z

92

Families and clustering in a natural numbers network  

Science Journals Connector (OSTI)

We develop a network in which the natural numbers are the vertices. The decomposition of natural numbers by prime numbers is used to establish the connections. We perform data collapse and show that the degree distribution of these networks scales linearly with the number of vertices. We explore the families of vertices in connection with prime numbers decomposition. We compare the average distance of the network and the clustering coefficient with the distance and clustering coefficient of the corresponding random graph. In case we set connections among vertices each time the numbers share a common prime number the network has properties similar to a random graph. If the criterion for establishing links becomes more selective, only prime numbers greater than pl are used to establish links, where the network has high clustering coefficient.

Gilberto Corso

2004-03-18T23:59:59.000Z

93

VOLUME 87, NUMBER 7 P H Y S I C A L R E V I E W L E T T E R S 13 AUGUST 2001 Free Energy Self-Averaging in Protein-Sized Random Heteropolymers  

E-Print Network [OSTI]

-Averaging in Protein-Sized Random Heteropolymers Jeffrey Chuang,1 Alexander Yu. Grosberg,2,3 and Mehran Kardar1,4 1 of heteropolymers are inherently macroscopic, but are applied to mesoscopic proteins. To compute the free energy. By enumerating the states and energies of compact 18, 27, and 36mers on a lattice with an ensemble of random

Chuang, Jeffrey

94

Better Randomness with Single Photons  

E-Print Network [OSTI]

Randomness is one of the most important resources in modern information science, since encryption founds upon the trust in random numbers. Since it is impossible to prove if an existing random bit string is truly random, it is relevant that they be generated in a trust worthy process. This requires specialized hardware for random numbers, for example a die or a tossed coin. But when all input parameters are known, their outcome might still be predicted. A quantum mechanical superposition allows for provably true random bit generation. In the past decade many quantum random number generators (QRNGs) were realized. A photonic implementation is described as a photon which impinges on a beam splitter, but such a protocol is rarely realized with non-classical light or anti-bunched single photons. Instead, laser sources or light emitting diodes are used. Here we analyze the difference in generating a true random bit string with a laser and with anti-bunched light. We show that a single photon source provides more r...

Oberreiter, Lukas

2014-01-01T23:59:59.000Z

95

Search in unknown random environments  

Science Journals Connector (OSTI)

N searchers are sent out by a source in order to locate a fixed object which is at a finite distance D, but the search space is infinite and D would be in general unknown. Each of the searchers has a finite random lifetime, and may be subject to destruction or failures, and it moves independently of other searchers, and at intermediate locations some partial random information may be available about which way to go. When a searcher is destroyed or disabled, or when it “dies naturally,” after some time the source becomes aware of this and it sends out another searcher, which proceeds similarly to the one that it replaces. The search ends when one of the searchers finds the object being sought. We use N coupled Brownian motions to derive a closed form expression for the average search time as a function of D which will depend on the parameters of the problem: the number of searchers, the average lifetime of searchers, the routing uncertainty, and the failure or destruction rate of searchers. We also examine the cost in terms of the total energy that is expended in the search.

Erol Gelenbe

2010-12-07T23:59:59.000Z

96

Broken gauge symmetry in a Bose gas with constant particle number  

E-Print Network [OSTI]

The existence of broken gauge symmetries in Bose-Einstein condensates is still controversially discussed in science, since it would not conserve the total number of particles. Here, it is shown for the first time that non-random condensate and non-condensate phase distributions may arise from local particle number breaking in a Bose gas with constant particle number, while the global U(1)-gauge symmetry of the system is preserved due to particle number conservation.

Alexej Schelle

2014-12-13T23:59:59.000Z

97

Statistical properties of valleys in the annealed random map model  

Science Journals Connector (OSTI)

The annealed random map model is one of the simplest models of statistical mechanics with stochastic dynamics. For this model, the authors define valleys by saying that two configurations submitted to the same stochastic forces belong to the same valley at time t if their trajectories have met before time t. They compute in the long-time limit the probability distribution of the number and the sizes of these valleys. They find a structure very reminiscent of the valley structure of the mean-field spin glasses with sample-to-sample fluctuations. Interpreting the annealed random map model as an aggregation model, they obtain non-self-averaging effects for the number of macroscopic clusters and for their sizes.

B Derrida; D Bessis

1988-01-01T23:59:59.000Z

98

CHAPTER XV - TIME SERIES  

Science Journals Connector (OSTI)

Publisher Summary This chapter provides an overview of time series. A time series is a set of observations of a variable made at different points of time and arranged in chronological order, each observation representing the value of the variable either at a given moment or during the interval of time between this observation and the preceding one. In general, the observations forming a time-series as made at equidistant intervals of time are considered. The factors affecting time-series may be recurring or nonrecurring, or evolutionary, periodic, or random. The method of moving averages consists in determining the average value for a certain number of terms of a time series and taking this average as the trend normal value for the middle of the period covered in the calculation of the average, that is, the period extent of the moving average.

ISAAC PAENSON

1970-01-01T23:59:59.000Z

99

Randomized Algorithms Robert Elsasser  

E-Print Network [OSTI]

Randomized Algorithms Robert Els¨asser 15. June 2011 Program of the day: · Random walks on graphs Robert Els¨asser Universit¨at Paderborn Randomized Algorithms SS 11 0 #12;Markov Chains and Random Walks¨asser Universit¨at Paderborn Randomized Algorithms SS 11 1 #12;Markov Chains and Random Walks A Markov chain M

Elsässer, Robert

100

Sensitivity of ballistic deposition to pseudorandom number generators  

Science Journals Connector (OSTI)

Ballistic deposition (BD) serves as a prototype for studies of dynamic scaling phenomena in nonequilibrium growth processes. In BD, particles are sequentially added to a growing surface at randomly selected positions. The model is typically investigated by computer simulations where randomness is implemented by pseudorandom number generators (PRNGs). The implicit assumption that PRNGs adequately represent true randomness is tested in this study via a statistical analysis of the width of the BD interface. We study the width of the interface over time scales orders of magnitude longer than the expected model relaxation time, yet much smaller than the period of the PRNG, and observe fluctuations which still appear to be correlated. Distinct dynamic behavior is observed for an implementation with a different PRNG, further indicating a strong coupling between the model and the PRNGs (even with PRNGs that pass extensive statistical tests). Thus we demonstrate a breakdown of basic sampling assumptions, and of the ergodic exploration of phase space.

Raissa M. D’Souza; Yaneer Bar-Yam; Mehran Kardar

1998-05-01T23:59:59.000Z

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


101

Universal short-time motion of a polymer in a random environment: Analytical calculations, a blob picture, and Monte Carlo results  

Science Journals Connector (OSTI)

Using a recently established renormalization group approach [U. Ebert, J. Stat. Phys. (to be published)], we analyze the center-of-mass motion of a polymer in a Gaussian disordered potential. While in the long-time limit normal diffusion is found, we concentrate here on shorter times. We discuss the general structure of the relevant crossover scaling function and evaluate it quantitatively in three dimensions to one loop order. We identify a universal short-time regime, where the chain length dependence of the center-of-mass motion is Rouse-like, while the time dependence is nontrivial. Motion in this regime can be interpreted in terms of a blob picture: A ‘‘time blob’’ defines an additional intrinsic length scale of the problem. The short-time dependence of the center-of-mass motion over several decades approximates a power law with an effective exponent that continuously depends on disorder (and also weakly on the time interval). We furthermore present the results of a simulation measuring the motion of a (pearl necklace) chain in Gaussian disorder in three dimensions. We find full agreement among theory and numerical experiment. The chacteristic behavior found in these simulations closely resembles the results of some previous simulations aimed at seeing reptation. This suggests that such work was strongly influenced by energetic disorder or entropic traps. © 1996 The American Physical Society.

Ute Ebert, Artur Baumgärtner, and Lothar Schäfer

1996-01-01T23:59:59.000Z

102

Random walk through fractal environments  

Science Journals Connector (OSTI)

We analyze random walk through fractal environments, embedded in three-dimensional, permeable space. Particles travel freely and are scattered off into random directions when they hit the fractal. The statistical distribution of the flight increments (i.e., of the displacements between two consecutive hittings) is analytically derived from a common, practical definition of fractal dimension, and it turns out to approximate quite well a power-law in the case where the dimension DF of the fractal is less than 2, there is though, always a finite rate of unaffected escape. Random walks through fractal sets with DF2 is decaying exponentially. The diffusive behavior of the random walk is analyzed in the frame of continuous time random walk, which we generalize to include the case of defective distributions of walk increments. It is shown that the particles undergo anomalous, enhanced diffusion for DF2 is normal for large times, enhanced though for small and intermediate times. In particular, it follows that fractals generated by a particular class of self-organized criticality models give rise to enhanced diffusion. The analytical results are illustrated by Monte Carlo simulations.

H. Isliker and L. Vlahos

2003-02-26T23:59:59.000Z

103

UNIT NUMBER:  

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

193 UNIT NUMBER: 197 UNIT NAME: CONCRETE RUBBLE PILE (30) REGULATORY STATUS: AOC LOCATION: Outside plant security fence, north of the plant on Big Bayou Creek on private property....

104

UNIT NUMBER  

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

7 UNIT NUMBER UNIT NAME Rubble oile 41 REGULATORY STATUS: AOC LOCATION: Butler Lake Dam, West end of Butler Lake top 20 ft wide, 10 ft APPROXIMATE DIMENSIONS: 200 ft long, base 30...

105

VOLUME 84, NUMBER 2 P H Y S I C A L R E V I E W L E T T E R S 10 JANUARY 2000 Collapse Dynamics of Liquid Bridges Investigated by Time-Varying Magnetic Levitation  

E-Print Network [OSTI]

VOLUME 84, NUMBER 2 P H Y S I C A L R E V I E W L E T T E R S 10 JANUARY 2000 Collapse Dynamics of Liquid Bridges Investigated by Time-Varying Magnetic Levitation Milind P. Mahajan,1 Mesfin Tsige,1 was discovered for the collapse time of a liquid bridge. A paramagnetic liquid was suspended between the tips

Taylor, Philip L.

106

Applications of Random Matrix Theory  

E-Print Network [OSTI]

= ­ eigenvalues lie on the unit circle. #12;Matrices - Recall · Eigenvalues = · Symmetry important complicated! · Keep the symmetry (as imposed by physics) but let everything else be random. #12;Data · Correlation matrix of time series of stock prices · Sea-level and atmospheric pressure · Longest increasing

Wirosoetisno, Djoko

107

Efficient Generation of PH-distributed Random Gabor Horvath2  

E-Print Network [OSTI]

Efficient Generation of PH-distributed Random Variates G´abor Horv´ath2 , Philipp Reinecke1 , Mikl approaches. Simulations require the efficient generation of random variates from PH distributions. PH generation of PH distributed variates. Key words: PH distribution, pseudo random number generation. 1

Telek, Miklós

108

Smoothness- transferred random field  

E-Print Network [OSTI]

We propose a new random field (RF) model, smoothness-transfer random field (ST-RF) model, for image modeling. In the objective function of RF models, smoothness energy is defined with compatibility function to capture the ...

Wei, Donglai

2013-01-01T23:59:59.000Z

109

On the Cost of Generating PH-distributed Random Philipp Reinecke, Katinka Wolter  

E-Print Network [OSTI]

On the Cost of Generating PH-distributed Random Numbers Philipp Reinecke, Katinka Wolter Humboldt systems. The use of these distributions in simulation studies requires efficient methods for generating PH-distributed random numbers. In this work, we consider the cost of PH-distributed random-number generation. I

Telek, Miklós

110

Implementation of a Distributed Pseudorandom Number Generator  

Science Journals Connector (OSTI)

In parallel Monte Carlo simulations, it is highly desirable to have a system of pseudo-random number generators that has good statistical properties and allows ... processes. In this work, we discuss a distributed

Jian Chen; Paula Whitlock

1995-01-01T23:59:59.000Z

111

Case Number:  

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

Name of Petitioner: Name of Petitioner: Date of Filing: Case Number: Department of Energy Washington, DC 20585 JUL 2 2 2009 DEPARTMENT OF ENERGY OFFICE OF HEARINGS AND APPEALS Appeal Dean P. Dennis March 2, 2009 TBA-0072 Dean D. Dennis filed a complaint of retaliation under the Department of Energy (DOE) Contractor Employee Protection Program, 10 C.F.R. Part 708. Mr. Dennis alleged that he engaged in protected activity and that his employer, National Security Technologies, LLC (NSTec ), subsequently terminated him. An Office of Hearings and Appeals (OHA) Hearing Officer denied relief in Dean P. Dennis, Case No. TBH-0072, 1 and Mr. Dennis filed the instant appeal. As discussed below, the appeal is denied. I. Background The DOE established its Contractor Employee Protection Program to "safeguard public

112

JOB NUMBER  

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

. . . . . . . . . .: LEAVE BLANK (NARA use only) JOB NUMBER N/-&*W- 9d - 3 DATE RECEIVED " -1s - 9 J - NOTIFICATION TOAGENCY , In accordance with the provisions of 44 U.S.C. 3303a the disposition request. including amendments, is ap roved except , . l for items that may be marke,, ,"dis osition not approved" or "withdrawn in c o i m n 10. 4. NAME OF PERSON WITH WHOM TO CONFER 5 TELEPHONE Jannie Kindred (202) 5&-333 5 - 2 -96 6 AGENCYCERTIFICATION -. ~ - I hereby certify that I am authorized to act for this agency in matters pertaining to the disposition of its records and that the records roposed for disposal are not now needed for the business of this agency or wiRnot be needed after t G t r & s s d ; and that written concurrence from

113

KPA Number  

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

Supports CMM-SW Level 3 Supports CMM-SW Level 3 Mapping of the DOE Information Systems Engineering Methodology to the Software Engineering Institute (SEI) Software Capability Maturity Model (CMM-SW) level 3. Date: September 2002 Page 1 KPA Number KPA Activity SEM Section SEM Work Product SQSE Web site http://cio.doe.gov/sqse ORGANIZATION PROCESS FOCUS OPF-1 The software process is assessed periodically, and action plans are developed to address the assessment findings. Chapter 1 * Organizational Process Management * Process Improvement Action Plan * Methodologies ! DOE Methodologies ! SEM OPF-2 The organization develops and maintains a plan for its software process development and improvement activities. Chapter 1 * Organizational Process Management * Process Improvement

114

Random coincidence of $2\  

E-Print Network [OSTI]

Two neutrino double $\\beta$ decay can create irremovable background even in high energy resolution detectors searching for neutrinoless double $\\beta$ decay due to random coincidence of $2\

D. M. Chernyak; F. A. Danevich; A. Giuliani; E. Olivieri; M. Tenconi; V. I. Tretyak

2013-01-17T23:59:59.000Z

115

Multicoloured Random Graphs: The Random Dynamics Program  

E-Print Network [OSTI]

The Random Dynamics program is a proposal to explain the origin of all symmetries, including Lorentz and gauge invariance without appeal to any fundamental invariance of the laws of nature, and to derive the known physical laws in such a way as to be almost unavoidable. C. D. Froggatt and H. B. Nielsen proposed in their book Origin of Symmetries, that symmetries and physical laws should arise naturally from some essentially random dynamics rather than being postulated to be exact. The most useful assumption of the program that can be made about the fundamental laws is taken to be that they are random and then to see how known physics like mechanics and relativity follow from them. It is believed that almost any model of these regularities would appear in some limit for example as energies become small. Almost all theories or models at the fundamental level could then explain known physics. We suggest how using the formalism and properties of random graphs might be useful in developing the theory, and point towards directions in which it can be more fully extended in future work.

Sam Tarzi

2014-07-15T23:59:59.000Z

116

18.366 Random Walks and Diffusion, Spring 2005  

E-Print Network [OSTI]

Discrete and continuum modeling of diffusion processes in physics, chemistry, and economics. Topics include central limit theorems, continuous-time random walks, Levy flights, correlations, extreme events, mixing, ...

Bazant, Martin Z.

117

Two countermeasure strategies to mitigate random disruptions in capacitated systems  

Science Journals Connector (OSTI)

We examine a capacitated system exposed to random stepwise capacity disruptions with exponentially distributed interarrival times and uniformly distributed magnitudes. We explore two countermeasure policies fo...

Niyazi O. Bakir; Alex Savachkin…

2010-06-01T23:59:59.000Z

118

Generating random thermal momenta  

E-Print Network [OSTI]

Generation of random thermal particle momenta is a basic task in many problems, such as microscopic studies of equilibrium and transport properties of systems, or the conversion of a fluid to particles. In heavy-ion physics, the (in)efficiency of the algorithm matters particularly in hybrid hydrodynamics + hadronic transport calculations. With popular software packages, such as UrQMD 3.3p1 or THERMINATOR, it can still take ten hours to generate particles for a single Pb+Pb "event" at the LHC from fluid dynamics output. Below I describe reasonably efficient simple algorithms using the MPC package, which should help speed momentum generation up by at least one order of magnitude. It is likely that this wheel has been reinvented many times instead of reuse, so there may very well exist older and/or better algorithms that I am not aware of (MPC has been around only since 2000). The main goal here is to encourage practitioners to use available efficient routines, and offer a few practical solutions.

Denes Molnar

2012-12-09T23:59:59.000Z

119

A Stochastic Perishable Inventory System with Random Supply Quantity  

E-Print Network [OSTI]

This paper considers a continuous review perishable inventory system with demands ar-rive according to a Markovian arrival process (MAP). We model, in this paper, the situation in which not all the ordered items are usable and the supply may contain a fraction of defec-tive items. The number of usable items is a random quantity. We consider a modified (s, S) policy which allows a finite number of pending order to be placed. We assume full back-logging of demands that occurred during stock out periods and that the recent backlogged demand may renege the system after an exponentially distributed amount of time. The limiting distribution of the inventory level is derived and shown to have matrix geometric form. The measures of system performance in the steady state are derived.

Paul Manuel; A. Shophia Lawrence; G. Arivarignan

120

Quantum random access memory  

E-Print Network [OSTI]

A random access memory (RAM) uses n bits to randomly address N=2^n distinct memory cells. A quantum random access memory (qRAM) uses n qubits to address any quantum superposition of N memory cells. We present an architecture that exponentially reduces the requirements for a memory call: O(log N) switches need be thrown instead of the N used in conventional (classical or quantum) RAM designs. This yields a more robust qRAM algorithm, as it in general requires entanglement among exponentially less gates, and leads to an exponential decrease in the power needed for addressing. A quantum optical implementation is presented.

Vittorio Giovannetti; Seth Lloyd; Lorenzo Maccone

2007-08-14T23:59:59.000Z

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


121

Random multiparty entanglement distillation  

E-Print Network [OSTI]

We describe various results related to the random distillation of multiparty entangled states - that is, conversion of such states into entangled states shared between fewer parties, where those parties are not predetermined. In previous work [Phys. Rev. Lett. 98, 260501 (2007)] we showed that certain output states (namely Einstein-Podolsky-Rosen (EPR) pairs) could be reliably acquired from a prescribed initial multipartite state (namely the W state) via random distillation that could not be reliably created between predetermined parties. Here we provide a more rigorous definition of what constitutes ``advantageous'' random distillation. We show that random distillation is always advantageous for W-class three-qubit states (but only sometimes for Greenberger-Horne-Zeilinger (GHZ)-class states). We show that the general class of multiparty states known as symmetric Dicke states can be readily converted to many other states in the class via random distillation. Finally we show that random distillation is provably not advantageous in the limit of multiple copies of pure states.

Ben Fortescue; Hoi-Kwong Lo

2007-09-25T23:59:59.000Z

122

Optimal Algorithms for Generating Discrete Random Variables with Changing Distributions  

E-Print Network [OSTI]

Optimal Algorithms for Generating Discrete Random Variables with Changing Distributions T. Hagerup arithmetic and the floor function, 3. generating a uniformly distributed real number between 0 and 1 K. Mehlhorn I. Munro Abstract We give optimal algorithms for generating discrete random variables

Mehlhorn, Kurt

123

Random Testing versus Partition Testing.  

E-Print Network [OSTI]

?? The difference between Partition Testing and Random Testing has been thoroughlyinvestigated theoretically. In this thesis we present a practical study ofthe differences between random… (more)

Oftedal, Kristian

2011-01-01T23:59:59.000Z

124

Randomized selection on the GPU  

SciTech Connect (OSTI)

We implement here a fast and memory-sparing probabilistic top N selection algorithm on the GPU. To our knowledge, this is the first direct selection in the literature for the GPU. The algorithm proceeds via a probabilistic-guess-and-chcck process searching for the Nth element. It always gives a correct result and always terminates. The use of randomization reduces the amount of data that needs heavy processing, and so reduces the average time required for the algorithm. Probabilistic Las Vegas algorithms of this kind are a form of stochastic optimization and can be well suited to more general parallel processors with limited amounts of fast memory.

Monroe, Laura Marie [Los Alamos National Laboratory; Wendelberger, Joanne R [Los Alamos National Laboratory; Michalak, Sarah E [Los Alamos National Laboratory

2011-01-13T23:59:59.000Z

125

Electrokinetic transport in microchannels with random roughness  

SciTech Connect (OSTI)

We present a numerical framework to model the electrokinetic transport in microchannels with random roughness. The three-dimensional microstructure of the rough channel is generated by a random generation-growth method with three statistical parameters to control the number density, the total volume fraction, and the anisotropy characteristics of roughness elements. The governing equations for the electrokinetic transport are solved by a high-efficiency lattice Poisson?Boltzmann method in complex geometries. The effects from the geometric characteristics of roughness on the electrokinetic transport in microchannels are therefore modeled and analyzed. For a given total roughness volume fraction, a higher number density leads to a lower fluctuation because of the random factors. The electroosmotic flow rate increases with the roughness number density nearly logarithmically for a given volume fraction of roughness but decreases with the volume fraction for a given roughness number density. When both the volume fraction and the number density of roughness are given, the electroosmotic flow rate is enhanced by the increase of the characteristic length along the external electric field direction but is reduced by that in the direction across the channel. For a given microstructure of the rough microchannel, the electroosmotic flow rate decreases with the Debye length. It is found that the shape resistance of roughness is responsible for the flow rate reduction in the rough channel compared to the smooth channel even for very thin double layers, and hence plays an important role in microchannel electroosmotic flows.

Wang, Moran [Los Alamos National Laboratory; Kang, Qinjun [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

126

A discrete fractional random transform  

E-Print Network [OSTI]

We propose a discrete fractional random transform based on a generalization of the discrete fractional Fourier transform with an intrinsic randomness. Such discrete fractional random transform inheres excellent mathematical properties of the fractional Fourier transform along with some fantastic features of its own. As a primary application, the discrete fractional random transform has been used for image encryption and decryption.

Zhengjun Liu; Haifa Zhao; Shutian Liu

2006-05-20T23:59:59.000Z

127

Random switching exponential smoothing and inventory forecasting  

Science Journals Connector (OSTI)

Abstract Exponential smoothing models represent an important prediction tool both in business and in macroeconomics. This paper provides the analytical forecasting properties of the random coefficient exponential smoothing model in the “multiple source of error” framework. The random coefficient state-space representation allows for switching between simple exponential smoothing and local linear trend. Therefore it enables controlling, in a flexible manner, the random changing dynamic behavior of the time series. The paper establishes the algebraic mapping between the state-space parameters and the implied reduced form ARIMA parameters. In addition, it shows that the parametric mapping allows overcoming the difficulties that are likely to emerge in estimating directly the random coefficient state-space model. Finally, it presents an empirical application comparing the forecast accuracy of the suggested model vis-à-vis other benchmark models, both in the ARIMA and in the exponential smoothing class. Using time series relative to wholesalers inventories in the USA, the out-of-sample results show that the reduced form of the random coefficient exponential smoothing model tends to be superior to its competitors.

Giacomo Sbrana; Andrea Silvestrini

2014-01-01T23:59:59.000Z

128

Derandomizing from Random Strings Harry Buhrman  

E-Print Network [OSTI]

Derandomizing from Random Strings Harry Buhrman CWI and University of Amsterdam buhrman c log n, R=c log n K , itself a strings of length nc , is complex enough to figure as a hard an alternative proof of the existence of an r.e. set A, due to Barzdin [4], such that for all time bounds t

Fortnow, Lance

129

Radiative transport limit for the random Schrödinger equation  

E-Print Network [OSTI]

We give a detailed mathematical analysis of the radiative transport limit for the average phase space density of solutions of the Schroedinger equation with time dependent random potential. Our derivation is based on the construction of an approximate martingale for the random Wigner distribution.

Guillaume Bal; George Papanicolaou; Leonid Ryzhik

2001-08-14T23:59:59.000Z

130

Uniform Laws of Large Numbers Carlos C. Rodriguez  

E-Print Network [OSTI]

Uniform Laws of Large Numbers Carlos C. Rodr´iguez http://omega.albany.edu:8008/ September 30, 2004 of probability theory. It was discovered for the case of random coin flips by James Bernoulli at around 1700

Rodriguez, Carlos

131

Free Energy Fluctuations for Directed Polymers in Random Media in 1?+?1 Dimension  

E-Print Network [OSTI]

We consider two models for directed polymers in space-time independent random media (the O'Connell-Yor semidiscrete directed polymer and the continuum directed random polymer) at positive temperature and prove their KPZ ...

Borodin, Alexei

132

Random matrices, symmetries, and many-body states  

E-Print Network [OSTI]

All nuclei with even numbers of protons and of neutrons have ground states with zero angular momentum. This is ascribed to the pairing force between nucleons, but simulations with random interactions suggest a much broader many-body phenomenon. In this Letter I project out random Hermitian matrices that have good quantum numbers and, computing the width of the Hamiltonian in subspaces, find ground states dominated by low quantum numbers, e.g. J=0. Furthermore I find odd-$Z$, odd-$N$ systems with isospin conservation have relatively fewer J=0 ground states.

Calvin W. Johnson

2011-03-21T23:59:59.000Z

133

Non-invertible transformations and spatiotemporal randomness  

E-Print Network [OSTI]

We generalize the exact solution to the Bernoulli shift map. Under certain conditions, the generalized functions can produce unpredictable dynamics. We use the properties of the generalized functions to show that certain dynamical systems can generate random dynamics. For instance, the chaotic Chua's circuit coupled to a circuit with a non-invertible I-V characteristic can generate unpredictable dynamics. In general, a nonperiodic time-series with truncated exponential behavior can be converted into unpredictable dynamics using non-invertible transformations. Using a new theoretical framework for chaos and randomness, we investigate some classes of coupled map lattices. We show that, in some cases, these systems can produce completely unpredictable dynamics. In a similar fashion, we explain why some wellknown spatiotemporal systems have been found to produce very complex dynamics in numerical simulations. We discuss real physical systems that can generate random dynamics.

J. A. Gonzalez; A. J. Moreno; L. E. Guerrero

2006-02-12T23:59:59.000Z

134

The peculiar phase structure of random graph bisection  

SciTech Connect (OSTI)

The mincut graph bisection problem involves partitioning the n vertices of a graph into disjoint subsets, each containing exactly n/2 vertices, while minimizing the number of 'cut' edges with an endpoint in each subset. When considered over sparse random graphs, the phase structure of the graph bisection problem displays certain familiar properties, but also some surprises. It is known that when the mean degree is below the critical value of 2 log 2, the cutsize is zero with high probability. We study how the minimum cutsize increases with mean degree above this critical threshold, finding a new analytical upper bound that improves considerably upon previous bounds. Combined with recent results on expander graphs, our bound suggests the unusual scenario that random graph bisection is replica symmetric up to and beyond the critical threshold, with a replica symmetry breaking transition possibly taking place above the threshold. An intriguing algorithmic consequence is that although the problem is NP-hard, we can find near-optimal cutsizes (whose ratio to the optimal value approaches 1 asymptotically) in polynomial time for typical instances near the phase transition.

Percus, Allon G [Los Alamos National Laboratory; Istrate, Gabriel [E-AUSTRIA RESEARCH INSTITUTE; Goncalves, Bruno T [EMORY UNIV; Sumi, Robert Z [E-AUSTRIA RESEARCH INATITUTE

2008-01-01T23:59:59.000Z

135

First-passage-time problems in time-aware networks  

E-Print Network [OSTI]

First passage time or the first time that a stochastic process crosses a boundary is a random variable whose probability distribution is sought in engineering, statistics, finance, and other disciplines. The probability ...

Suwansantisuk, Watcharapan, 1978-

2012-01-01T23:59:59.000Z

136

Riverpoint Campus Security 358-7995 (24-hour number)  

E-Print Network [OSTI]

: Age: Number at which call received: Time: Date: CALLER'S VOICE: Calm Nasal Angry Stutter Slow Lisp

Collins, Gary S.

137

Compendium of Experimental Cetane Numbers  

SciTech Connect (OSTI)

This report is an updated version of the 2004 Compendium of Experimental Cetane Number Data and presents a compilation of measured cetane numbers for pure chemical compounds. It includes all available single compound cetane number data found in the scientific literature up until March 2014 as well as a number of unpublished values, most measured over the past decade at the National Renewable Energy Laboratory. This Compendium contains cetane values for 389 pure compounds, including 189 hydrocarbons and 201 oxygenates. More than 250 individual measurements are new to this version of the Compendium. For many compounds, numerous measurements are included, often collected by different researchers using different methods. Cetane number is a relative ranking of a fuel's autoignition characteristics for use in compression ignition engines; it is based on the amount of time between fuel injection and ignition, also known as ignition delay. The cetane number is typically measured either in a single-cylinder engine or a constant volume combustion chamber. Values in the previous Compendium derived from octane numbers have been removed, and replaced with a brief analysis of the correlation between cetane numbers and octane numbers. The discussion on the accuracy and precision of the most commonly used methods for measuring cetane has been expanded and the data has been annotated extensively to provide additional information that will help the reader judge the relative reliability of individual results.

Yanowitz, J.; Ratcliff, M. A.; McCormick, R. L.; Taylor, J. D.; Murphy, M. J.

2014-08-01T23:59:59.000Z

138

Extreme slowdowns for one-dimensional excited random walks  

E-Print Network [OSTI]

Dec 20, 2013 ... Once the random walk visits all sites in an interval at least M times, then ... main tools that has been used in studying one-dimensional excited ...

2013-12-20T23:59:59.000Z

139

Randomly coupled Ising models  

Science Journals Connector (OSTI)

We consider the phase diagram of two randomly coupled Ising models to mimic the successive phase transitions in plastic crystals. Detailed mean-field calculations are performed. Depending on the strength of the couplings, the phase diagrams display three ordered phases and some multicritical points. A tetracritical point is found to turn bicritical as the strength of the couplings increases. The nature of this multicritical point is then analyzed by means of a momentum-space renormalization-group calculation. Using the replica trick, we obtain an effective n-component spin Hamiltonian. The random coupling is found to be relevant and shown to have drastic effects on the multicritical behavior. The lower critical dimension is estimated to be dl=2. In the n=0 limit, to first order in the parameter ?=4-d, a system of seven recursion relations is obtained. Although there is a stable fixed point, it cannot be reached from physically acceptable initial conditions. We give arguments to support a runaway of the flow lines associated with a fluctuation-induced first-order transition.

S. Galam; S. R. Salinas; Y. Shapir

1995-02-01T23:59:59.000Z

140

Accelerated Randomized Benchmarking  

E-Print Network [OSTI]

Quantum information processing offers promising advances for a wide range of fields and applications, provided that we can efficiently assess the performance of the control applied in candidate systems. That is, we must be able to determine whether we have implemented a desired gate, and refine accordingly. Randomized benchmarking reduces the difficulty of this task by exploiting symmetries in quantum operations. Here, we bound the resources required for benchmarking and show that, with prior information, we can achieve several orders of magnitude better accuracy than in traditional approaches to benchmarking. Moreover, by building on state-of-the-art classical algorithms, we reach these accuracies with near-optimal resources. Our approach requires an order of magnitude less data to achieve the same accuracies and to provide online estimates of the errors in the reported fidelities. We also show that our approach is useful for physical devices by comparing to simulations. Our results thus enable the application of randomized benchmarking in new regimes, and dramatically reduce the experimental effort required to assess control fidelities in quantum systems. Finally, our work is based on open-source scientific libraries, and can readily be applied in systems of interest.

Christopher Granade; Christopher Ferrie; D. G. Cory

2014-04-21T23:59:59.000Z

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


141

A Robust Quantum Random Access Memory  

E-Print Network [OSTI]

A "bucket brigade" architecture for a quantum random memory of $N=2^n$ memory cells needs $n(n+5)/2$ times of quantum manipulation on control circuit nodes per memory call. Here we propose a scheme, in which only average $n/2$ times manipulation is required to accomplish a memory call. This scheme may significantly decrease the time spent on a memory call and the average overall error rate per memory call. A physical implementation scheme for storing an arbitrary state in a selected memory cell followed by reading it out is discussed.

Fang-Yu Hong; Yang Xiang; Zhi-Yan Zhu; Li-zhen Jiang; Liang-neng Wu

2012-01-11T23:59:59.000Z

142

Battling bird flu by the numbers  

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

bird flu by the numbers Lab theorists have developed a mathematical tool that could help health experts and crisis managers determine in real time whether an emerging...

143

Response: Issue Numbers and Librarianship  

Science Journals Connector (OSTI)

...some time. Put back the issue number. ALISON BAKER Librawy Jackson Laboratot), Bar...passage in which he supposes some unusually wise ape-like animal to have first thought...the approving nods and kindly grunts ofmy wise and most respected chief. And now I feel...

DANIEL E. KOSHLAND; JR.

1986-05-23T23:59:59.000Z

144

The origin of order in random matrices with symmetries  

E-Print Network [OSTI]

From Noether's theorem we know symmetries lead to conservation laws. What is left to nature is the ordering of conserved quantities; for example, the quantum numbers of the ground state. In physical systems the ground state is generally associated with `low' quantum numbers and symmetric, low-dimensional irreps, but there is no \\textit{a priori} reason to expect this. By constructing random matrices with nontrivial point-group symmetries, I find the ground state is always dominated by extremal low-dimensional irreps. Going further, I suggest this explains the dominance of J=0 g.s. even for random two-body interactions.

Calvin W. Johnson

2012-06-25T23:59:59.000Z

145

COMPUTING THE DRIFT OF RANDOM WALKS IN DEPENDENT RANDOM ENVIRONMENTS  

E-Print Network [OSTI]

new theory and methodology for the computation of the drift of the random walk for various depen- dent for RWREs was laid by Solomon [13], who proved conditions for recurrence/transience for one with independent random environments. The purpose of this paper is to develop theory and methodology

Kroese, Dirk P.

146

Packing Hamilton Cycles in Random and Pseudo-Random Hypergraphs  

E-Print Network [OSTI]

Packing Hamilton Cycles in Random and Pseudo-Random Hypergraphs Alan Frieze Michael Krivelevich February 16, 2011 Abstract We say that a k-uniform hypergraph C is a Hamilton cycle of type , for some 1 Hamilton cycles. A slightly weaker result is given for = k/2. We also provide sufficient conditions

Krivelevich, Michael

147

Scaling in random-bond Ising models  

Science Journals Connector (OSTI)

We have examined several Ising models with nearest-neighbor interactions taken randomly from a symmetric distribution of width ?J. Results indicate that z1/2?J, where z is the number of nearest neighbors, is a very useful energy and temperature scaling parameter. While this is not surprising in light of the Sherrington-Kirkpatrick model, the degree to which certain model-dependent quantities can be rescaled to fit nearly universal curves is remarkable. This scaling property seems little affected by the location or existence of a spin-glass transition.

M. Thomsen and Mei-ching Fok

1989-08-01T23:59:59.000Z

148

Elements of number theory  

E-Print Network [OSTI]

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

Harbour, Daniel, 1975-

2003-01-01T23:59:59.000Z

149

Bounded Randomness Paul Brodhead1  

E-Print Network [OSTI]

kmng@ntu.edu.sg Abstract. We introduce some new variations of the notions of being Martin-L¨of random effective betting, effective regularities or effective compression. Exactly what we mean here by "effective to calibrate no- tions of randomness by varying the notion of effectivity. For example, classical Martin

Ng, Keng Meng "Selwyn"

150

Experimental quantum randomness generation invulnerable to the detection loophole  

E-Print Network [OSTI]

Random numbers are essential for multiple applications, including cryptography, financial security, digital rights management and scientific simulations. However, producing random numbers from a finite state machine, such as a classical computer, is impossible. One option is to use conventional quantum random number generators (QRNGs) based on the intrinsic uncertainty of quantum measurement outcomes. The problem in this case is that private randomness relies on assumptions on the internal functioning of the measurement devices. "Device-independent" QRNGs not relying on devices inner workings assumptions can be built but are impractical. They require a detection efficiency that, so far, has only be achieved with trapped ions and with photons detected with transition-edge superconducting sensors. Here we introduce a novel protocol for quantum private randomness generation that makes no assumption on the functioning of the devices and works even with very low detection efficiency. We implement the protocol using weak coherent states and standard single-photon detectors. Our results pave the way towards a second generation of more secure practical QRNGs.

Gustavo Cañas; Jaime Cariñe; Esteban S. Gómez; Johanna F. Barra; Adán Cabello; Guilherme B. Xavier; Gustavo Lima; Marcin Paw?owski

2014-10-28T23:59:59.000Z

151

Random packing of lines in a lattice cube  

Science Journals Connector (OSTI)

A study is made of the random sequential packing of complete lines in a cube of integer lattice points, with side N. For N?15 exact packing fractions are computed. It is found that if line occupation attempts arrive as a spatial Poisson process the packing has two distinct phases; initially where large numbers of potential adsorption sites are blocked, and subsequently where no further blocking occurs so that filling is exponential in time. It is shown that the ratio of the durations of the blocking to the nonblocking phases falls to zero as N??. In this limit, the packing fraction at time t is ?(t)=34(1?e?t). The rapid switch between phases in large systems creates a dramatic fall in the packing rate at the start of the process. This becomes a discontinuity as N?? and is a consequence of the high aspect ratio of the packing objects. It provides a physical explanation for the diverging coefficients in expansions of ?(t) about t=0 for objects with diverging aspect ratio. After considering the three-dimensional case, the analysis is extended to d-dimensional cubes, for which it is conjectured that ?=d/2d?1 in the limit N??.

D. J. Burridge

2010-03-09T23:59:59.000Z

152

2.017J / 1.015J Design of Systems Operating in Random Environments, Spring 2006  

E-Print Network [OSTI]

This class covers the principles for optimal performance and survival of extreme events in a random environment; linear time invariant systems and Fourier transform; random processes, autocorrelation function, and power ...

Hover, Franz

153

Random Testing of Interrupt-Driven Software John Regehr  

E-Print Network [OSTI]

. Interrupts have led to well-known problems in safety-critical embedded software. For example, a numberRandom Testing of Interrupt-Driven Software John Regehr School of Computing University of Utah regehr@cs.utah.edu ABSTRACT Interrupt-driven embedded software is hard to thoroughly test since

Regehr, John

154

On Generators of Random Quasigroup Problems Roman Bartk  

E-Print Network [OSTI]

On Generators of Random Quasigroup Problems Roman Barták Charles University, Faculty of Mathematics-life problems. In this paper, we study generators for Quasigroup Completion Problem (QCP) and Quasigroups with Holes (QWH). We propose an improvement of the generator for QCP that produces a larger number

Bartak, Roman

155

On Generators of Random Quasigroup Problems Roman Bartk*  

E-Print Network [OSTI]

On Generators of Random Quasigroup Problems Roman Barták* Charles University, Faculty-life problems and hence might be more suitable for benchmarking. In this paper, we describe in detail generators of the generator for QCP that produces a larger number of satisfiable problems by using propaga- tion through

Bartak, Roman

156

On Generators of Random Quasigroup Problems Roman Bartk*  

E-Print Network [OSTI]

On Generators of Random Quasigroup Problems Roman Barták* Charles University, Faculty generators for Quasigroup Completion Problem (QCP) and Quasigroups with Holes (QWH). In particular, we study an improvement of the generator for QCP that produces a larger number of satisfiable problems by us- ing

Bartak, Roman

157

Separable states improve protocols with restricted randomness  

E-Print Network [OSTI]

It is known from Bell's theorem that quantum predictions for some entangled states cannot be mimicked using local hidden variable (LHV) models. From a computer science perspective, LHV models may be interpreted as classical computers operating on a potentially infinite number of correlated bits originating from a common source. As such, Bell inequality violations achieved through entangled states are able to characterise the quantum advantage of certain tasks, so long as the task itself imposes no restriction on the availability of correlated bits. However, if the number of shared bits is limited, additional constraints are placed on the possible LHV models and separable, i.e. disentangled, states may become a useful resource. Bell violations are therefore no longer necessary to achieve a quantum advantage. Here we show that in particular, separable states may improve the so-called random access codes, which is a class of communication problems where one party tries to read a portion of the data held by another distant party in presence of finite shared randomness and limited classical communication. We also show how the bias of classical bits can be used to avoid wrong answers in order to achieve the optimal classical protocol and how the advantage of quantum protocols is linked to quantum discord.

T. K. Chuan; T. Paterek

2014-10-07T23:59:59.000Z

158

Document ID Number: RL-721  

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

Document ID Number: Document ID Number: RL-721 REV 4 NEPA REVIEW SCREENING FORM DOE/CX-00066 I. Project Title: Nesting Bird Deterrent Study at the 241-C Tank Farm CX B3.8, "Outdoor Terrestrial Ecological and Environmental Research" II. Project Description and Location (including Time Period over which proposed action will occur and Project Dimensions - e.g., acres displaced/disturbed, excavation length/depth, area/location/number of buildings, etc.): Washington River Protection Solutions LLC (WRPS) will perform an outdoor, terrestrial ecological research study to attempt to control and deter nesting birds at the 241-C Tank Farm. This will be a preventative study to test possible methods for controlling &/or minimizing the presence and impacts of nesting birds inside the tank farm. A nesting bird

159

Randomized algorithms for reliable broadcast  

E-Print Network [OSTI]

In this thesis, we design randomized algorithms for classical problems in fault tolerant distributed computing in the full-information model. The full-information model is a strong adversarial model which imposes no ...

Vaikuntanathan, Vinod

2009-01-01T23:59:59.000Z

160

Randomization theorems for quantum channels  

E-Print Network [OSTI]

The classical randomization criterion is an important result of statistical decision theory. Recently, a quantum analogue has been proposed, giving equivalent conditions for two sets of quantum states, ensuring existence of a quantum channel mapping one set close to the other, in $L_1$-distance. In the present paper, we extend these concepts in several ways. First, sets of states are replaced by channels and randomization is performed by either post- or pre-composition with another channel. The $L_1$-distance is replaced by the diamond norm. Secondly, the maps are not required to be completely positive, but positivity is given by an admissible family of convex cones. It is shown that the randomization theorems, generalizing both quantum and classical randomization criteria, can be proved in the framework of base section norms, including the diamond norm and its dual. The theory of such norms is developed in the Appendix.

Anna Jencova

2014-04-15T23:59:59.000Z

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


161

Rhodamine-doped Aerogel Random Laser  

Science Journals Connector (OSTI)

Random Laser generation can give valuable information on the structure of diffuse materials. The aerogel matrix has knowingly a fractal organization. Here, random laser generation from...

Miranda, Adriana Ramos de; Pecoraro, Édison; Ribeiro, Sidney José L; Giehl, Júlia Maria; Reijn, Saara-Maarit; Wetter, Niklaus U

162

A Study of Information Dissemination Under Multiple Random Walkers and Replication Mechanisms  

E-Print Network [OSTI]

the number of movements by reducing initial revisits. Simulation results considering geometric random graph problems if traditional ap- proaches are followed (e.g., spanning tree formation, flooding- based approaches). For example, traditional flooding [11], under which information is deterministically

Stavrakakis, Ioannis

163

A Multi-Price Inventory Model with Random Discount Prices Mohammad Mahdi Tajbakhsh1, Chi-Guhn Lee1,3, Saeed Zolfaghari2  

E-Print Network [OSTI]

A Multi-Price Inventory Model with Random Discount Prices Mohammad Mahdi Tajbakhsh1, Chi-Guhn Lee1 deal offers with a random discount price at random points in time. Assuming that the demand is constant over time, lead times are negligible, discount offerings follow a Poisson process, and discount price

Lee, Chi-Guhn

164

Random?walk model of isotope enrichment in cascades  

Science Journals Connector (OSTI)

Steady opertional parameters such as enrichment flow rates isotopic distributions in the product and in the waste and their variation over the cascade are evaluated in terms of transit probabilities and average transit times of different gas molecules in their random walk from one stage to another of a cascade. The random?walk model is also used for describing transient properties i.e. the output response to input perturbation and the relaxation time. Calculations in terms of the model are carried out for UF6 of natural abundance enriched in a diffusion cascade. With the appropriate numerical values the model can also be applied to centrifuge cascades.

I. Kiss; Sz. Vass

1977-01-01T23:59:59.000Z

165

RL·721 Document ID Number:  

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

Document ID Number: Document ID Number: REV 3 NEPA REVIEW SCREENING FORM DOE/CX-00045 . J.proj(;l~t Titl~: - - - -- - - - - - - - - - - - - - - - - - -- --------- ------_. . _ - - - - - - - - - - - - - . - - - - - - - - - - - - - - - - - - - LIMITED FIREBREAK MAINTENANCE ON THE HANFORD SITE DURING CALENDAR YEAR 2012 II. Project Description and Location (including Time Period over which proposed action will occur and Project Dimensions· e.g., acres displaced/disturbed, excavation length/depth, etc.): The Department of Energy (DOE) proposes to perform firebreak maintenance in selected areas of the Hanford Site during calendar year 2012 with limited use of physical, chemical, and prescribed burning methods. Prescribed burning will be performed by the Hanford Fire Department under approved burn plans and permits; and only in previously disturbed

166

Random walks in glasslike environments  

Science Journals Connector (OSTI)

We have considered in the framework of a renormalization-group approach the asymptotic behavior of a diffusive particle in an environment with quenched disorder and an additional dynamical feedback. The disorder is described by a spatially random drift force field; the feedback is controlled by a memory of strength ?. Both disorder and memory have proved to be relevant in d0) can be related to a superdiffusion (divergence-free drift forces), subdiffusion (random drift forces) or a localization of the particle (curl-free drift forces). The last regime shows an important agreement with the results of the well-known mode-coupling approach.

M. Schulz and S. Stepanow

1999-06-01T23:59:59.000Z

167

Number | Open Energy Information  

Open Energy Info (EERE)

Number Number Jump to: navigation, search Properties of type "Number" Showing 200 properties using this type. (previous 200) (next 200) A Property:AvgAnnlGrossOpCpcty Property:AvgTempGeoFluidIntoPlant Property:AvgWellDepth B Property:Building/FloorAreaChurchesChapels Property:Building/FloorAreaGroceryShops Property:Building/FloorAreaHealthServices24hr Property:Building/FloorAreaHealthServicesDaytime Property:Building/FloorAreaHeatedGarages Property:Building/FloorAreaHotels Property:Building/FloorAreaMiscellaneous Property:Building/FloorAreaOffices Property:Building/FloorAreaOtherRetail Property:Building/FloorAreaResidential Property:Building/FloorAreaRestaurants Property:Building/FloorAreaSchoolsChildDayCare Property:Building/FloorAreaShops Property:Building/FloorAreaSportCenters

168

Fractional calculus as a macroscopic manifestation of randomness  

Science Journals Connector (OSTI)

We generalize the method of Van Hove [Physica (Amsterdam) 21, 517 (1955)] so as to deal with the case of nonordinary statistical mechanics, that being phenomena with no time-scale separation. We show that in the case of ordinary statistical mechanics, even if the adoption of the Van Hove method imposes randomness upon Hamiltonian dynamics, the resulting statistical process is described using normal calculus techniques. On the other hand, in the case where there is no time-scale separation, this generalized version of Van Hove’s method not only imposes randomness upon the microscopic dynamics, but it also transmits randomness to the macroscopic level. As a result, the correct description of macroscopic dynamics has to be expressed in terms of the fractional calculus.

P. Grigolini; A. Rocco; B. J. West

1999-03-01T23:59:59.000Z

169

Random Walks and Electrical Networks Electrical Network Calculations in Random Walks in  

E-Print Network [OSTI]

Random Walks and Electrical Networks Electrical Network Calculations in Random Walks in Random 2/4/2008 1 / 23 #12;Random Walks and Electrical Networks Much of this talk is based on the book Random Walks and Electric Networks by Peter G. Doyle and J. Laurie Snell. Free download available at http

Peterson, Jonathon

170

Random partitions in statistical mechanics  

E-Print Network [OSTI]

We consider a family of distributions on spatial random partitions that provide a coupling between different models of interest: the ideal Bose gas; the zero-range process; particle clustering; and spatial permutations. These distributions are invariant for a "chain of Chinese restaurants" stochastic process. We obtain results for the distribution of the size of the largest component.

Nicholas M. Ercolani; Sabine Jansen; Daniel Ueltschi

2014-01-07T23:59:59.000Z

171

ALARA notes, Number 8  

SciTech Connect (OSTI)

This document contains information dealing with the lessons learned from the experience of nuclear plants. In this issue the authors tried to avoid the `tyranny` of numbers and concentrated on the main lessons learned. Topics include: filtration devices for air pollution abatement, crack repair and inspection, and remote handling equipment.

Khan, T.A.; Baum, J.W.; Beckman, M.C. [eds.] [eds.

1993-10-01T23:59:59.000Z

172

CHROMOSOME NUMBERS IN MAMMALS  

Science Journals Connector (OSTI)

...variables for which the double inte-gral does not exist: R. L. JEFFERY. On the number of elements in a group which have a power in...society will meet at Columbia University, MA ay 2, 1925. W. BENJAMIN FITE Acting Secretary 424 SCIENCE

Theophilus S. Painter

1925-04-17T23:59:59.000Z

173

Baryon Number Violation  

E-Print Network [OSTI]

This report, prepared for the Community Planning Study - Snowmass 2013 - summarizes the theoretical motivations and the experimental efforts to search for baryon number violation, focussing on nucleon decay and neutron-antineutron oscillations. Present and future nucleon decay search experiments using large underground detectors, as well as planned neutron-antineutron oscillation search experiments with free neutron beams are highlighted.

K. S. Babu; E. Kearns; U. Al-Binni; S. Banerjee; D. V. Baxter; Z. Berezhiani; M. Bergevin; S. Bhattacharya; S. Brice; R. Brock; T. W. Burgess; L. Castellanos; S. Chattopadhyay; M-C. Chen; E. Church; C. E. Coppola; D. F. Cowen; R. Cowsik; J. A. Crabtree; H. Davoudiasl; R. Dermisek; A. Dolgov; B. Dutta; G. Dvali; P. Ferguson; P. Fileviez Perez; T. Gabriel; A. Gal; F. Gallmeier; K. S. Ganezer; I. Gogoladze; E. S. Golubeva; V. B. Graves; G. Greene; T. Handler; B. Hartfiel; A. Hawari; L. Heilbronn; J. Hill; D. Jaffe; C. Johnson; C. K. Jung; Y. Kamyshkov; B. Kerbikov; B. Z. Kopeliovich; V. B. Kopeliovich; W. Korsch; T. Lachenmaier; P. Langacker; C-Y. Liu; W. J. Marciano; M. Mocko; R. N. Mohapatra; N. Mokhov; G. Muhrer; P. Mumm; P. Nath; Y. Obayashi; L. Okun; J. C. Pati; R. W. Pattie Jr.; D. G. Phillips II; C. Quigg; J. L. Raaf; S. Raby; E. Ramberg; A. Ray; A. Roy; A. Ruggles; U. Sarkar; A. Saunders; A. Serebrov; Q. Shafi; H. Shimizu; M. Shiozawa; R. Shrock; A. K. Sikdar; W. M. Snow; A. Soha; S. Spanier; G. C. Stavenga; S. Striganov; R. Svoboda; Z. Tang; Z. Tavartkiladze; L. Townsend; S. Tulin; A. Vainshtein; R. Van Kooten; C. E. M. Wagner; Z. Wang; B. Wehring; R. J. Wilson; M. Wise; M. Yokoyama; A. R. Young

2013-11-21T23:59:59.000Z

174

CHEMICAL SAFETY Emergency Numbers  

E-Print Network [OSTI]

- 1 - CHEMICAL SAFETY MANUAL 2010 #12;- 2 - Emergency Numbers UNBC Prince George Campus Security Prince George Campus Chemstores 6472 Chemical Safety 6472 Radiation Safety 5530 Biological Safety 5530 Risk and Safety Manager 5535 Security 7058 #12;- 3 - FOREWORD This reference manual outlines the safe

Bolch, Tobias

175

Modeling Spatial-Temporal Binary Data Using Markov Random Fields  

E-Print Network [OSTI]

Modeling Spatial-Temporal Binary Data Using Markov Random Fields Jun Zhu Department of Statistics to the autologistic model for spatial-temporal binary data. The model we propose is a Markov chain across time, where discuss the generality of our approach for modeling other types of spatial-temporal lattice data. Keywords

Huang, Su-Yun

176

ccsd00002024, Stochastic Acceleration in Strong Random Fields  

E-Print Network [OSTI]

oteborg, Sweden Abstract Di#11;usion of particles in velocity space undergoing turbulent #12;eld was extensively in the external #12;eld of Langmuir waves with given k-spectrum and random phases is done. For strong #12;elds power of elapsed time with the exponent dependent on the particular #12;eld spectrum. Such evolu- tion

177

ELECTRICAL DISTRICT NUMBER EIGHT  

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

ELECTRICAL DISTRICT NUMBER EIGHT ELECTRICAL DISTRICT NUMBER EIGHT Board of Directors Reply to: Ronald Rayner C. W. Adams James D. Downing, P.E. Chairman Billy Hickman 66768 Hwy 60 Brian Turner Marvin John P.O. Box 99 Vice-Chairman Jason Pierce Salome, AZ 85348 Denton Ross Jerry Rovey Secretary James N. Warkomski ED8@HARCUVARCO.COM John Utz Gary Wood PHONE:(928) 859-3647 Treasurer FAX: (928) 859-3145 Sent via e-mail Mr. Darrick Moe, Regional Manager Western Area Power Administration Desert Southwest Region P. O. Box 6457 Phoenix, AZ 85005-6457 moe@wapa.gov; dswpwrmrk@wapa.gov Re: ED5-Palo Verde Hub Project Dear Mr. Moe, In response to the request for comments issued at the October 6 Parker-Davis Project customer th meeting, and in conjunction with comments previously submitted by the Southwest Public Power

178

Preventive Action Number:  

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

8 Preventive Action Report Planning Worksheet 11_0414 1 of 3 8 Preventive Action Report Planning Worksheet 11_0414 1 of 3 EOTA - Business Form Document Title: Preventive Action Report Planning Worksheet Document Number: F-018 Rev 11_0414 Document Owner: Elizabeth Sousa Backup Owner: Melissa Otero Approver(s): Melissa Otero Parent Document: P-008, Corrective/Preventive Action Notify of Changes: EOTA Employees Referenced Document(s): N/A F-018 Preventive Action Report Planning Worksheet 11_0414 2 of 3 Revision History: Rev. Description of Change 08_0613 Initial Release 09_0924 Worksheet modified to reflect External Audit recommendation for identification of "Cause for Potential Nonconformance". Minor editing changes. 11_0414 Added Preventive Action Number block to match Q-Pulse

179

Preventive Action Number:  

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

7 Corrective Action Report Planning Worksheet 11_0414 1 of 3 7 Corrective Action Report Planning Worksheet 11_0414 1 of 3 EOTA - Business Form Document Title: Corrective Action Report Planning Worksheet Document Number: F-017 Rev 11_0414 Document Owner: Elizabeth Sousa Backup Owner: Melissa Otero Approver(s): Melissa Otero Parent Document: P-008, Corrective/Preventive Action Notify of Changes: EOTA Employees Referenced Document(s): N/A F-017 Corrective Action Report Planning Worksheet 11_0414 2 of 3 Revision History: Rev. Description of Change 08_0613 Initial Release 11_0414 Added problem statement to first block. F-017 Corrective Action Report Planning Worksheet 11_0414 3 of 3 Corrective Action Report Planning Worksheet Corrective Action Number: Source: Details/Problem Statement: Raised By: Raised Date: Target Date:

180

Review of Probability Random Variable  

E-Print Network [OSTI]

at close 4) Height of wheel going over a rocky road #12;3 Random Variable Non-examples 1) `Heads' or `Tails' on coin 2) Red or Black ball from urn But we can make these into RV's Basic Idea ­ don't know · Temperature · Wheel height #12;5 Given Continuous RV X... What is the probability that X = x0 ? Oddity : P

Fowler, Mark

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


181

Thermodynamics of random copolymer melts  

Science Journals Connector (OSTI)

We report on a mean-field thermodynamic analysis of AB random copolymer melts with (backbone) composition correlations that reflect realistic polymerization conditions. Depending on the strength and sign of these correlations, multiple homogeneous phases, periodic mesophases, or disordered mesophases are possible. We identify an isotropic Lifshitz point and the critical lines that emerge from it. Our results should facilitate the design of new copolymeric materials.

Glenn H. Fredrickson and Scott T. Milner

1991-08-12T23:59:59.000Z

182

Colorado Natural Gas Number of Residential Consumers (Number...  

Gasoline and Diesel Fuel Update (EIA)

Residential Consumers (Number of Elements) Colorado Natural Gas Number of Residential Consumers (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7...

183

Colorado Natural Gas Number of Industrial Consumers (Number of...  

Gasoline and Diesel Fuel Update (EIA)

Industrial Consumers (Number of Elements) Colorado Natural Gas Number of Industrial Consumers (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7...

184

Colorado Natural Gas Number of Commercial Consumers (Number of...  

Gasoline and Diesel Fuel Update (EIA)

Commercial Consumers (Number of Elements) Colorado Natural Gas Number of Commercial Consumers (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7...

185

NAME: STUDENT NUMBER (PID): CITY, STATE ZIP: DAYTIME PHONE NUMBER  

E-Print Network [OSTI]

NAME: STUDENT NUMBER (PID): ADDRESS: CITY, STATE ZIP: DAYTIME PHONE NUMBER: CELL PHONE NUMBER of financial institution. 14 Cell Phone Expenses 15 Other ordinary and necessary living expenses. 16 TOTAL (add

186

Connecticut Natural Gas Number of Residential Consumers (Number...  

Gasoline and Diesel Fuel Update (EIA)

Residential Consumers (Number of Elements) Connecticut Natural Gas Number of Residential Consumers (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6...

187

Connecticut Natural Gas Number of Commercial Consumers (Number...  

Gasoline and Diesel Fuel Update (EIA)

Commercial Consumers (Number of Elements) Connecticut Natural Gas Number of Commercial Consumers (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7...

188

Connecticut Natural Gas Number of Industrial Consumers (Number...  

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

Industrial Consumers (Number of Elements) Connecticut Natural Gas Number of Industrial Consumers (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7...

189

To appear in Biosystem 1998 TOWARDS A NEURAL MODEL OF TIMING  

E-Print Network [OSTI]

that maintains self-sustained (short-term memory) activity for a random time. The unit in the second layer

Bugmann, Guido

190

Distributed detection and fusion in a large wireless sensor network of random size  

Science Journals Connector (OSTI)

For a wireless sensor network (WSN) with a random number of sensors, we propose a decision fusion rule that uses the total number of detections reported by local sensors as a statistic for hypothesis testing. We assume that the signal power attenuates ... Keywords: decision fusion, deflection coefficient, distributed detection, wireless sensor networks

Ruixin Niu; Pramod K. Varshney

2005-09-01T23:59:59.000Z

191

Number Sec CRN Days Time Room Instructor Office 13700 011 ...  

E-Print Network [OSTI]

... 12:30PM-01:20PM EE 129 Benjamin Wiles MATH 846 16200 101 21909 TR .... Jeffery Zylinski MATH 1028 26200 041 64358 MWF 11:30AM-12:20PM UNIV ...

192

Number Sec CRN Days Time Room Instructor Office 10800 001 ...  

E-Print Network [OSTI]

... 42955 R 12:30PM-01:20PM PHYS 110 Geoffrey Lindsell MATH 713 16500 .... Liu MATH 605 26100 300 56451 MWF 03:30PM-04:20PM EE 129 Benjamin ...

193

Number Sec CRN Days Time Room Instructor Office 26600 122 ...  

E-Print Network [OSTI]

... 22097 TR 10:30AM-11:45AM UNIV 117 Benjamin Adcock MATH 406 26600 ... TR 01:30PM-02:45PM MATH 175 Jeffrey Beckley MATH 818 37300 001 41327 ...

194

Number Sec CRN Days Time Room Instructor Office 26200 054 ...  

E-Print Network [OSTI]

... Benjamin Adcock MATH 406 26600 061 22096 TR 10:30AM-11:45AM LILY ... 09:30AM-10:20AM MTHW 210 Jeffrey Beckley MATH 818 36600 191 65543 T ...

195

Number Sec CRN Days Time Room Instructor Office 69200 003 ...  

E-Print Network [OSTI]

... Office 69200 003 64974 TR 12:00PM-01:15PM MATH 215 Benjamin Adcock ... TR 01:30PM-02:45PM PHYS 203 Jeffrey Beckley MATH 818 37300 001 42982 ...

196

Number Sec CRN Days Time Room Instructor Office 13700 011 ...  

E-Print Network [OSTI]

... T 04:30PM-05:45PM HIKS B848 Benjamin Wiles MATH 846 16200 100 21911 ... 63691 TR 02:30PM-03:20PM PHYS 111 Geoffrey Lindsell MATH 713 16200 ...

197

Study Reveals Fuel Injection Timing Impact on Particle Number...  

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

increasingly turning to gasoline direct injection (GDI) coupled with turbocharging as a cost-effective option for improving the efficiency and performance of gasoline engines....

198

Constructing numbers through moments in time: Kant's philosophy of mathematics  

E-Print Network [OSTI]

work, Critique of Pure Reason, to contemporary treatments by Brouwer and other intuitionists who have developed his position further. In chapter II, I examine the ontology of Kant's philosophy of arithmetic. The issue at hand is to explore how Kant...

Wilson, Paul Anthony

2004-11-15T23:59:59.000Z

199

Hydrodynamical random walker with chemotactic memory  

E-Print Network [OSTI]

A three-dimensional hydrodynamical model for a micro random walker is combined with the idea of chemotactic signaling network of E. coli. Diffusion exponents, orientational correlation functions and their dependence on the geometrical and dynamical parameters of the system are analyzed numerically. Because of the chemotactic memory, the walker shows superdiffusing displacements in all directions with the largest diffusion exponent for a direction along the food gradient. Mean square displacements and orientational correlation functions show that the chemotactic memory washes out all the signatures due to the geometrical asymmetry of the walker and statistical properties are asymmetric only with respect to the direction of food gradient. For different values of the memory time, the Chemotactic index (CI) is also calculated.

H. Mohammady; B. Esckandariun; A. Najafi

2014-10-01T23:59:59.000Z

200

Hydrodynamical random walker with chemotactic memory  

E-Print Network [OSTI]

A three-dimensional hydrodynamical model for a micro random walker is combined with the idea of chemotactic signaling network of E. coli. Diffusion exponents, orientational correlation functions and their dependence on the geometrical and dynamical parameters of the system are analyzed numerically. Because of the chemotactic memory, the walker shows superdiffusing displacements in all directions with the largest diffusion exponent for a direction along the food gradient. Mean square displacements and orientational correlation functions show that the chemotactic memory washes out all the signatures due to the geometrical asymmetry of the walker and statistical properties are asymmetric only with respect to the direction of food gradient. For different values of the memory time, the Chemotactic index (CI) is also calculated.

Mohammady, H; Najafi, A

2014-01-01T23:59:59.000Z

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


201

Random Matrix Theory, Numerical Computation and Applications  

E-Print Network [OSTI]

a precursor to a book on Random Matrix Theory that will be forthcoming. We reserve the right to reuseRandom Matrix Theory, Numerical Computation and Applications Alan Edelman, Brian D. Sutton new approaches to theory. We illustrate by describing such random matrix techniques as the stochastic

Edelman, Alan

202

Invertibility of random matrices M. Rudelson  

E-Print Network [OSTI]

Invertibility of random matrices M. Rudelson We will discuss several recent developments related to invertibility and spectral properties of large random matrices. Consider an n Ã? n matrix, whose values are independent identically distributed random variables. The invertibility questions can be roughly divided

Weinberger, Hans

203

Random sets lotteries and decision theory  

Science Journals Connector (OSTI)

Abstract We apply random sets theory to decision making under risk. This leads to a unifying concept which is compatible with some types of behavior like the Choquet Expected Utility and MaxMin Expected Utility. We show that the “expected utility” of a random set lottery is easy to calculate. Hence a decision making model with random sets is actually very tractable.

Marc-Arthur Diaye; Gleb Koshevoy

2014-01-01T23:59:59.000Z

204

Number Plastic Type Common Items Number of Items (tally) 1 polyethylene terephthalate  

E-Print Network [OSTI]

End Time: Number Plastic Type Common Items Number of Items (tally) 1 polyethylene terephthalate and vegetable oil containers; ovenable food trays. 2 high density polyethylene Milk jugs, juice bottles; bleach, piping, candy wrappers 4 low density polyethylene Squeezable bottles; bread, frozen food, dry cleaning

Schladow, S. Geoffrey

205

Construction Project Number  

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

North Execution - (2009 - 2011) North Execution - (2009 - 2011) Construction Project Number 2009 2010 2011 Project Description ANMLPL 0001C 76,675.32 - - Animas-Laplata circuit breaker and power rights CRGRFL 0001C - - 7,177.09 Craig Rifle Bay and transfer bay upgrade to 2000 amps; / Convert CRG RFL to 345 kV out of Bears Ear Sub FGE 0019C - - 39,207.86 Replace 69/25kV transformer KX2A at Flaming Gorge FGE 0020C - - 52,097.12 Flaming Gorge: Replace failed KW2A transformer HDN 0069C 16,638.52 208,893.46 3,704,578.33 Replace failed transformer with KZ1A 250 MVA 230/138kv

206

KPA Activity Number  

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

supports CMM-SW Level 2 supports CMM-SW Level 2 Mapping of the DOE Systems Engineering Methodology to the Software Engineering Institute (SEI) Software Capability Maturity Model (CMM- SW) level 2. Date: September 2002 Page 1 KPA Activity Number KPA Activity SEM Section SME Work Product SQSE Web Site http://cio.doe.gov/sqse REQUIREMENTS MANAGEMENT RM-1 The software engineering group reviews the allocated requirements before they are incorporated in the software project. Chapter 3.0 * Develop High-Level Project Requirements Chapter 4.0 * Establish Functional Baseline * Project Plan * Requirements Specification Document * Requirements Management awareness * Defining Project Requirements RM-2 The software engineering group uses the allocated requirements as the basis for

207

RL-721 Document ID Number:  

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

4 4 NEPA REVIEW SCREENING FORM DOE/CX-00075 I. Project Title: Project 1-718, Electrical Utili ties Transformer Management Support Facility II. Project Description and Location (including Time Period over which proposed action will occur and Project Dimensions -e.g., acres displaced/disturbed, excavation length/depth, area/location/number of buildings, etc.): The proposed action includes design, procurement, and construction of a pre-engineered metal building for transformer management; including inspections, routine maintenance, testing, refurbishing, and disposition of excess transformers. The building will be constructed in the previously disturbed, gravel-covered electrical utilities lay-down yard west of the 2101-M Building in 200 East Area of the Hanford Site. The building footprint

208

Abstract--Adaptive random testing (ART) techniques have been proposed in the literature to improve the effectiveness of  

E-Print Network [OSTI]

Abstract--Adaptive random testing (ART) techniques have been proposed in the literature to improve the effectiveness of random testing (RT) by evenly distributing test cases over the input space. Simulations when measured by the number of test cases required to detect the first fault. In this paper, we report

Zhu, Hong

209

Lévy Flights in Random Environments  

Science Journals Connector (OSTI)

We consider Lévy flights characterized by the step index f in a quenched isotropic short-range random force field to one loop order. By means of a dynamic renormalization group analysis, we find that the dynamic exponent z for f<2 locks onto f, independent of dimension and independent of the presence of weak quenched disorder. The critical dimension for f<2 is given by dc=2f-2. For d

Hans C. Fogedby

1994-11-07T23:59:59.000Z

210

On neutron numbers and atomic masses  

Science Journals Connector (OSTI)

On neutron numbers and atomic masses ... Assigning neutron numbers, correct neutron numbers, and atomic masses and nucleon numbers. ...

R. Heyrovská

1992-01-01T23:59:59.000Z

211

DOE/ID-Number  

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

Public Preferences Related to Public Preferences Related to Consent-Based Siting of Radioactive Waste Management Facilities for Storage and Disposal: Analyzing Variations over Time, Events, and Program Designs Prepared for US Department of Energy Nuclear Fuel Storage and Transportation Planning Project Hank C. Jenkins-Smith Carol L. Silva Kerry G. Herron Kuhika G. Ripberger Matthew Nowlin Joseph Ripberger Center for Risk and Crisis Management, University of Oklahoma Evaristo "Tito" Bonano Rob P. Rechard Sandia National Laboratories February 2013 FCRD-NFST-2013-000076 SAND 2013-0032P Public Preferences Related to Consent Based Siting of Radioactive Waste Management Facilities ii February 2013 Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a

212

Generation of random numbers on graphics processors: Forced indentation in silico of the bacteriophage HK97  

E-Print Network [OSTI]

, University of Massachusetts, Lowell, MA, 01854 2Department of Mathematics, University of Massachusetts, and Lagged Fibonacci algorithms on the GPU. We profiled the performance of these generators in terms subsecond timescale using realistic force- loads. We found that the mechanical response of HK97 critically

Barsegov, Valeri

213

Lower bounds for randomized Exclusive Write PRAMs  

SciTech Connect (OSTI)

In this paper we study the question: How useful is randomization in speeding up Exclusive Write PRAM computations? Our results give further evidence that randomization is of limited use in these types of computations. First we examine a compaction problem on both the CREW and EREW PRAM models, and we present randomized lower bounds which match the best deterministic lower bounds known. (For the CREW PRAM model, the lower bound is asymptotically optimal.) These are the first non-trivial randomized lower bounds known for the compaction problem on these models. We show that our lower bounds also apply to the problem of approximate compaction. Next we examine the problem of computing boolean functions on the CREW PRAM model, and we present a randomized lower bound, which improves on the previous best randomized lower bound for many boolean functions, including the OR function. (The previous lower bounds for these functions were asymptotically optimal, but we improve the constant multiplicative factor.) We also give an alternate proof for the randomized lower bound on PARITY, which was already optimal to within a constant additive factor. Lastly, we give a randomized lower bound for integer merging on an EREW PRAM which matches the best deterministic lower bound known. In all our proofs, we use the Random Adversary method, which has previously only been used for proving lower bounds on models with Concurrent Write capabilities. Thus this paper also serves to illustrate the power and generality of this method for proving parallel randomized lower bounds.

MacKenzie, P.D.

1995-05-02T23:59:59.000Z

214

E-Print Network 3.0 - arrival timing-insensitive technique Sample...  

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

Mathematics, University of Maryland at College Park Collection: Mathematics 17 Randomized Load Balancing with General Service Time Distributions Summary: . General service times:...

215

Pseudorandom number generator for massively parallel molecular-dynamics simulations  

Science Journals Connector (OSTI)

A class of uniform pseudorandom number generators is proposed for modeling and simulations on massively parallel computers. The algorithm is simple, nonrecursive, and is easily transported to serial or vector computers. We have tested the procedure for uniformity, independence, and correlations by several methods. Related, less complex sequences passed some of these tests well enough; however, inadequacies were revealed by tests for correlations and in an interesting application, namely, annealing from an initial lattice that is mechanically unstable. In the latter case, initial velocities chosen by a random number generator that is not sufficiently random lead quickly to unphysical regularity in grain structure. The new class of generators passes this dynamical diagnostic for unwanted correlations.

Brad Lee Holian; Ora E. Percus; Tony T. Warnock; Paula A. Whitlock

1994-08-01T23:59:59.000Z

216

The Limiting Distribution of Decoherent Quantum Random Walks  

E-Print Network [OSTI]

The behaviors of one-dimensional quantum random walks are strikingly different from those of classical ones. However, when decoherence is involved, the limiting distributions take on many classical features over time. In this paper, we study the decoherence on both position and ``coin'' spaces of the particle. We propose a new analytical approach to investigate these phenomena and obtain the generating functions which encode all the features of these walks. Specifically, from these generating functions, we find exact analytic expressions of several moments for the time and noise dependence of position. Moreover, the limiting position distributions of decoherent quantum random walks are shown to be Gaussian in an analytical manner. These results explicitly describe the relationship between the system and the level of decoherence.

Kai Zhang

2008-04-28T23:59:59.000Z

217

Time-Homogeneous Diffusions with a Given Marginal at a Random Time  

E-Print Network [OSTI]

on the occasion of his 60th birthday. e-mail: A.M.G.Cox@bath.ac.uk; web: www.maths.bath.ac.uk/mapamgc/ e-mail: D.Hobson@warwick.ac.uk; web: www.warwick.ac.uk/go/dhobson/ §e-mail: obloj@maths.ox.ac.uk; web: www.maths.ox.ac.uk/obloj/ 1 #12 Krein's spectral theory of strings. Both of the above proofs exploit deep known results. In the final

218

An Incremental Algorithm for Betti Numbers of Simplicial Complexes*  

E-Print Network [OSTI]

An Incremental Algorithm for Betti Numbers of Simplicial Complexes* Cecil Jose A. Delfinado. Abstract A general and direct method for computing the betti numbers of the homology groups of a finite!ied to the family of a-shapes of a finite point set in R3 ittakes time O(ncz(n)) to compute the betti numbers of all

Kazhdan, Michael

219

Focusing and energy deposition inside random media  

Science Journals Connector (OSTI)

The degree of control over waves transmitted through random media is determined by characteristics of the singular values of the transmission matrix. This Letter explores focusing and...

Cheng, Xiaojun; Genack, Azriel Z

2014-01-01T23:59:59.000Z

220

How Can Random Noise Help Us  

E-Print Network [OSTI]

How Can Random Noise Help Us. Global Transports from Thermal Fluctuations. Aaron N. K. Yip. Department of Mathematics. Purdue University. 0. 1. 2. 3. 4. 5. 6.

2009-03-18T23:59:59.000Z

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


221

Magnetic-field-line random walk in turbulence: A two-point correlation function description  

Science Journals Connector (OSTI)

The standard theory of field-line random walk is based on the description of turbulence in the wave number space. The latter description takes into account the details of turbulence at small scales. Such details, however, are not important in the theory of random walking magnetic field lines. In the present paper we therefore use simple decorrelation models to estimate the field-line diffusion coefficient. Previous results are recovered as special limits. It is shown that a full analytical description is possible and that the only parameter controlling the field-line diffusion coefficient is the Kubo number.

A. Shalchi; A. Dosch; J. A. le Roux; G. M. Webb; G. P. Zank

2012-02-28T23:59:59.000Z

222

Transcendental L2 -Betti numbers  

E-Print Network [OSTI]

Transcendental L2 -Betti numbers Atiyah's question Thomas Schick G¨ottingen OA Chennai 2010 Thomas Schick (G¨ottingen) Transcendental L2 -Betti numbers Atiyah's question OA Chennai 2010 1 / 24 #12 = ~M/) with fundamental domain F. L2-Betti numbers:= normalized dimension( space of L2-harmonic forms

Sunder, V S

223

Data Compression with Prime Numbers  

E-Print Network [OSTI]

A compression algorithm is presented that uses the set of prime numbers. Sequences of numbers are correlated with the prime numbers, and labeled with the integers. The algorithm can be iterated on data sets, generating factors of doubles on the compression.

Gordon Chalmers

2005-11-16T23:59:59.000Z

224

A Very Low Latency Photonic Quantum Random Bit Generator for use in a Loophole Free Bell Test  

E-Print Network [OSTI]

A novel type of a quantum random number generator is presented that features characteristics necessary for application in a loophole-free Bell inequality test: (1) a very short latency between the request for a random bit and moment when the bit is generated of (9.8 \\pm 0.2) ns; (2) all physical processes relevant to a generation of a bit happen after the bit request signal; (3) high efficiency of producing a bit upon a request (100\\% by design). Additionally, the generator is characterized by: ability of high bit generation rate, possibility to use a low-efficiency photon detector, a high ratio of number of bits per detected photon (\\approx 2) and simplicity of design. Generated sequences of random bits pass NIST Statistical Test Suite without postprocessing. The generator can be also used for any other purpose where random numbers are needed.

Mario Stip?evi?

2014-07-17T23:59:59.000Z

225

Random?exchange Ising model with spatially correlated disorder  

Science Journals Connector (OSTI)

The pair correlation functiong(r r?) is derived in the mean?field approximation for a ‘‘random?exchange’’ Ising ferromagnet with long?range spatial correlations in the disorder. The static structure factor S(q) describing the intensity of scatteredelectromagnetic radiation or neutrons is then calculated. The inadequacy of a mean?field treatment is demonstrated and the physical aspects of renormalization are discussed. From a pedagogical perspective this problem offers a contemporary application of a number of techniques typically encountered in an advanced undergraduate or first?year graduate course in mathematical physics and can be used at that level to introduce the concept of renormalization

Erik K. Hobbie

1996-01-01T23:59:59.000Z

226

Thermodynamics of protein folding: a random matrix formulation  

E-Print Network [OSTI]

The process of protein folding from an unfolded state to a biologically active, folded conformation is governed by many parameters e.g the sequence of amino acids, intermolecular interactions, the solvent, temperature and chaperon molecules. Our study, based on random matrix modeling of the interactions, shows however that the evolution of the statistical measures e.g Gibbs free energy, heat capacity, entropy is single parametric. The information can explain the selection of specific folding pathways from an infinite number of possible ways as well as other folding characteristics observed in computer simulation studies.

Pragya Shukla

2010-10-16T23:59:59.000Z

227

Hamilton Cycles Containing Randomly Selected Edges in Random Regular Graphs \\Lambda  

E-Print Network [OSTI]

Hamilton Cycles Containing Randomly Selected Edges in Random Regular Graphs \\Lambda R. W. Robinson oriented root edges have been randomly specified for the cycle to contain. The Hamilton cycle must be orientable to agree with all of the orientations on the j root edges. It is shown that the requisite Hamilton

Robinson, Robert W.

228

Measure, Randomness and Sublocales Alex Simpson  

E-Print Network [OSTI]

Measure, Randomness and Sublocales Alex Simpson Laboratory for Foundations of Computer Science, School of Informatics, University of Edinburgh, UK Abstract This paper investigates aspects of measure and randomness in the context of locale theory (point-free topology). We prove that every measure (-continuous

Simpson, Alex

229

Introduction to Network Science 1 Random Models  

E-Print Network [OSTI]

Introduction to Network Science 1 Random Models #12;Introduction to Network Science 2 mean degree in a graph with exactly m edges Taylor series reminder: #12;Introduction to Network Science 3 In contrast to the degree distribution in random model ... #12;Introduction to Network Science 4 In contrast to the degree

Safro, Ilya

230

Lattice Vibration and Random Walk Problems  

Science Journals Connector (OSTI)

......1960 research-article Articles Lattice Vibration and Random Walk Problems Ei Teramoto...Mathematical relations between the lattice vibration and the random walk problems are presented...the frequency spectrum of the lattice vibration can be expressed in terms of the transition......

Ei Teramoto

1960-12-01T23:59:59.000Z

231

Randomized Parallel Algorithms in Optimization Stephen Wright  

E-Print Network [OSTI]

Randomized Parallel Algorithms in Optimization Stephen Wright University of Wisconsin-Madison July 2013 Wright (UW-Madison) Random Parallel Optimization July 2013 1 / 52 #12;Collaborators @ UW-Madison Victor Bittorf Ji Liu Ben Recht ( Berkeley) Chris R´e ( Stanford) Krishna Sridhar Wright (UW

232

Number  

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

NATIONAL ENERGY POLICY NATIONAL ENERGY POLICY STATUS REPORT on Implementation of NEP Recommendations January, 2005 1 NEP RECOMMENDATIONS: STATUS OF IMPLEMENTATION Chapter 1 1. That the President issue an Executive Order to direct all federal agencies to include in any regulatory action that could significantly and adversely affect energy supplies, distribution, or use, a detailed statement of energy effects and alternatives in submissions to the Office of Management and Budget of proposed regulations covered and all notices of proposed regulations published in the Federal Register. STATUS: IMPLEMENTED. In May 2001, President Bush issued Executive Order 13211 requiring federal agencies to include, in any regulatory action that could significantly and

233

NUMBER:  

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

SWMU 161 C-743 Trainina Trailer Comolex- Soil Backfill UNIT NAME: . REGULATORY STATUS: AOC LOCATION: Southwest of C-743 building APPROXIMATE DIMENSIONS: 200 feet wide by 200 feet...

234

Patterns revealed through weighted networks: A random matrix theory relation  

E-Print Network [OSTI]

Despite the tremendous advancements in the field of network theory, very few studies have taken weights in the interactions into consideration that emerge naturally in all real world systems. Using a weighted social network, we demonstrate the profound impact of weights in interactions on emerging structural properties. The analysis reveals that randomness existing in particular time frame affects the decisions of individuals rendering them more freedom of choice in situations of financial security. While the structural organization of networks remain same throughout all datasets, random matrix theory provides insight into interaction pattern of individual of the society in situations of crisis. It has also been contemplated that individual accountability in terms of weighted interactions remains as a key to success unless segregation of tasks comes into play.

Sarkar, Camellia

2014-01-01T23:59:59.000Z

235

Response of an unbalanced rotating machine to a stationary normal random excitation  

E-Print Network [OSTI]

Process, x(t) The Mean Square Response for a Stationary Normal Random process, x(t) 17 18 The Root Mean Square Foundation Force. . . . . . . . . . . . . . . . 19 Derivation of the Critical Variance of Eccentricity. . 20 TABLE OF CONTENTS (continued... probability density function autocorrelation of a stationary random process estimator of correlation a constant spectral density spectral density estimator of variance NDNENCLATURE (continued) Symbol Description time Wp x(t) xp (t) Y (w) y (t...

Boyce, Lola

1975-01-01T23:59:59.000Z

236

Maximum stellar mass versus cluster membership number revisited  

E-Print Network [OSTI]

We have made a new compilation of observations of maximum stellar mass versus cluster membership number from the literature, which we analyse for consistency with the predictions of a simple random drawing hypothesis for stellar mass selection in clusters. Previously, Weidner and Kroupa have suggested that the maximum stellar mass is lower, in low mass clusters, than would be expected on the basis of random drawing, and have pointed out that this could have important implications for steepening the integrated initial mass function of the Galaxy (the IGIMF) at high masses. Our compilation demonstrates how the observed distribution in the plane of maximum stellar mass versus membership number is affected by the method of target selection; in particular, rather low n clusters with large maximum stellar masses are abundant in observational datasets that specifically seek clusters in the environs of high mass stars. Although we do not consider our compilation to be either complete or unbiased, we discuss the method by which such data should be statistically analysed. Our very provisional conclusion is that the data is not indicating any striking deviation from the expectations of random drawing.

Th. Maschberger; C. J. Clarke

2008-08-29T23:59:59.000Z

237

USE OF MAILBOX APPROACH, VIDEO SURVEILLANCE, AND SHORT-NOTICE RANDOM INSPECTIONS TO ENHANCE DETECTION OF UNDECLARED LEU PRODUCTION AT GAS CENTRIFUGE ENRICHMENT PLANTS.  

SciTech Connect (OSTI)

Current safeguards approaches used by the IAEA at gas centrifuge enrichment plants (GCEPs) need enhancement in order to detect undeclared LEU production with adequate detection probability. ''Mailbox'' declarations have been used in the last two decades to verify receipts, production, and shipments at some bulk-handling facilities (e.g., fuel-fabrication plants). The operator declares the status of his plant to the IAEA on a daily basis using a secure ''Mailbox'' system such as a secure tamper-resistant computer. The operator agrees to hold receipts and shipments for a specified period of time, along with a specified number of annual inspections, to enable inspector access to a statistically large enough population of UF{sub 6} cylinders and fuel assemblies to achieve the desired detection probability. The inspectors can access the ''Mailbox'' during randomly timed inspections and then verify the operator's declarations for that day. Previously, this type of inspection regime was considered mainly for verifying the material balance at fuel-fabrication, enrichment, and conversion plants. Brookhaven National Laboratory has expanded the ''Mailbox'' concept with short-notice random inspections (SNRIs), coupled with enhanced video surveillance, to include declaration and verification of UF{sub 6} cylinder operational data to detect activities associated with undeclared LEU production at GCEPs. Since the ''Mailbox'' declarations would also include data relevant to material-balance verification, these randomized inspections would replace the scheduled monthly interim inspections for material-balance purposes; in addition, the inspectors could simultaneously perform the required number of Limited-Frequency Unannounced Access (LFUA) inspections used for HEU detection. This approach would provide improved detection capabilities for a wider range of diversion activities with not much more inspection effort than at present.

BOYER, B.D.; GORDON, D.M.; JO, J.

2006-07-16T23:59:59.000Z

238

THE RANGE OF TWO DIMENSIONAL SIMPLE RANDOM WALK Jian (Kevin) Jiao  

E-Print Network [OSTI]

to go. If the head turns up, you move one step to the right. Otherwise, you move one step to the left location in each step, thus summing up to the total number of distinct locations visited after n steps. Now the range using several new random variables. The whole proof also requires generating functions

Pemantle, Robin

239

Random walk of electrons in a gas in the presence of polarized electromagnetic waves: Genesis of a wave induced discharge  

SciTech Connect (OSTI)

The average number of collisions N of seed electrons with neutral gas atoms during random walk in escaping from a given volume, in the presence of polarized electromagnetic waves, is found to vary as N=B({lambda}/{lambda}){sup 2}/[1+C({lambda}/{lambda})]{sup 2}, indicating a modification to the conventional field free square law N=A({lambda}/{lambda}){sup 2}, where {lambda} is the characteristic diffusion length and {lambda} the mean free path. It is found that for the field free case A=1.5 if all the electrons originate at the center and is 1.25 if they are allowed to originate at any random point in the given volume. The B and C coefficients depend on the wave electric field and frequency. Predictions of true discharge initiation time {tau}{sub c} can be made from the temporal evolution of seed electrons over a wide range of collision frequencies. For linearly polarized waves of 2.45 GHz and electric field in the range (0.6-1.0)x10{sup 5} V/m, {tau}{sub c}=5.5-1.6 ns for an unmagnetized microwave driven discharge at 1 Torr argon.

Bhattacharjee, Sudeep; Paul, Samit [Department of Physics, Indian Institute of Technology, Kanpur 208016 (India)

2009-10-15T23:59:59.000Z

240

Is there quantum chaos in the prime numbers?  

E-Print Network [OSTI]

A statistical analysis of the prime numbers indicates possible traces of quantum chaos. We have computed the nearest neighbor spacing distribution, number variance, skewness, and excess for sequences of the first N primes for various values of N. All four statistical measures clearly show a transition from random matrix statistics at small N toward Poisson statistics at large N. In addition, the number variance saturates at large lengths as is common for eigenvalue sequences. This data can be given a physical interpretation if the primes are thought of as eigenvalues of a quantum system whose classical dynamics is chaotic at low energy but regular at high energy. We discuss some difficulties with this interpretation in an attempt to clarify what kind of physical system might have the primes as its quantum eigenvalues.

Todd Timberlake; Jeffery Tucker

2007-08-19T23:59:59.000Z

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


241

Non-Rayleigh scattering by a randomly oriented elongated scatterer  

E-Print Network [OSTI]

The echo statistics of a randomly rough, randomly oriented prolate spheroid that is randomly located in a beampattern are investigated from physics-based principles both analytically and by Monte Carlo methods. This is a ...

Bhatia, Saurav

2012-01-01T23:59:59.000Z

242

From random Regge triangulations to open strings  

E-Print Network [OSTI]

We show how Boundary Conformal Field Theory deformation techniques allow for a complete characterisation of the coupling between the discrete geometry inherited uniformizing a random Regge triangulations and open string theory.

Mauro Carfora; Claudio Dappiaggi; Valeria L. Gili

2007-02-14T23:59:59.000Z

243

Weak multiplicativity for random quantum channels  

E-Print Network [OSTI]

It is known that random quantum channels exhibit significant violations of multiplicativity of maximum output p-norms for any p>1. In this work, we show that a weaker variant of multiplicativity nevertheless holds for these channels. For any constant p>1, given a random quantum channel N (i.e. a channel whose Stinespring representation corresponds to a random subspace S), we show that with high probability the maximum output p-norm of n copies of N decays exponentially with n. The proof is based on relaxing the maximum output infinity-norm of N to the operator norm of the partial transpose of the projector onto S, then calculating upper bounds on this quantity using ideas from random matrix theory.

Montanaro, Ashley

2011-01-01T23:59:59.000Z

244

Efficient Stochastic Galerkin Methods For Random Diffusion ...  

E-Print Network [OSTI]

We discuss in this paper simulations of diffusion problems ... With PC/gPC serving as a complete basis to represent random processes, a stochastic Galerkin ... coupled diffusion equations, which can be readily written in a vector/

2008-09-16T23:59:59.000Z

245

Random Walks and Electrical Networks Electrical Network ...  

E-Print Network [OSTI]

Feb 4, 2008 ... Much of this talk is based on the book Random Walks and Electric. Networks by Peter .... Rx,y resistance of the edge from x to y. Cx,y = 1. Rx,y.

Jonathon Peterson

2008-01-30T23:59:59.000Z

246

Random Walks and Electric Resistance Networks  

Science Journals Connector (OSTI)

In the present chapter, an electrical network is considered as an interconnection of resistors. We demonstrate that random walks defined on connected undirected graphs have a profound connection to electric resis...

Philippe Blanchard; Dimitri Volchenkov

2011-01-01T23:59:59.000Z

247

CHAPTER XVIII - INDEX-NUMBERS OF PRICES PRICE INDEX-NUMBERS  

Science Journals Connector (OSTI)

Publisher Summary This chapter provides an overview of index numbers. If a term is expressed in a statistical series comparing similar events at different times or in different places as a relative number to another term, called the base, of the same series one obtains an index number of the simplest form. If the terms of a series of prices of a given commodity are expressed as ratio to a fixed base and a number of such series are combined into a group, a frequency distribution is obtained. The first purpose of constructing price index numbers was the measurement of changes in the purchasing power of money considered as a reciprocal of the general price level. Another purpose of constructing price index numbers is the splitting of changes in aggregate values into their price and quantity components. While it is easy to split changes in aggregate values into price changes and quantity changes in the case of a single commodity, it is extremely difficult to do so in the case of a group of commodities. Theoretically, six fundamental types of price index numbers may be distinguished.

ISAAC PAENSON

1970-01-01T23:59:59.000Z

248

Motion at low Reynolds number  

E-Print Network [OSTI]

The work described in this thesis centers on inertialess motion at low Reynolds numbers at the crossroad between biofluids and microfluids. Here we address questions regarding locomotion of micro-swimmers, transport of ...

Tam, Daniel See Wai, 1980-

2008-01-01T23:59:59.000Z

249

Departmental Business Instrument Numbering System  

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

To prescribe procedures for assigning identifying numbers to all Department of Energy (DOE), including the National Nuclear Security Administration, business instruments. Cancels DOE 1331.2B. Canceled by DOE O 540.1A.

2000-12-05T23:59:59.000Z

250

Departmental Business Instrument Numbering System  

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

The Order prescribes the procedures for assigning identifying numbers to all Department of Energy (DOE) and National Nuclear Security Administration (NNSA) business instruments. Cancels DOE O 540.1. Canceled by DOE O 540.1B.

2005-01-27T23:59:59.000Z

251

California Natural Gas Number of Residential Consumers (Number of Elements)  

U.S. Energy Information Administration (EIA) Indexed Site

Residential Consumers (Number of Elements) Residential Consumers (Number of Elements) California Natural Gas Number of Residential Consumers (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 1980's 7,626 7,904,858 8,113,034 8,313,776 1990's 8,497,848 8,634,774 8,680,613 8,726,187 8,790,733 8,865,541 8,969,308 9,060,473 9,181,928 9,331,206 2000's 9,370,797 9,603,122 9,726,642 9,803,311 9,957,412 10,124,433 10,329,224 10,439,220 10,515,162 10,510,950 2010's 10,542,584 10,625,190 10,681,916 - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. Release Date: 12/12/2013 Next Release Date: 1/7/2014 Referring Pages: Number of Natural Gas Residential

252

Performance of wireless sensor networks under random node failures  

SciTech Connect (OSTI)

Networks are essential to the function of a modern society and the consequence of damages to a network can be large. Assessing network performance of a damaged network is an important step in network recovery and network design. Connectivity, distance between nodes, and alternative routes are some of the key indicators to network performance. In this paper, random geometric graph (RGG) is used with two types of node failure, uniform failure and localized failure. Since the network performance are multi-facet and assessment can be time constrained, we introduce four measures, which can be computed in polynomial time, to estimate performance of damaged RGG. Simulation experiments are conducted to investigate the deterioration of networks through a period of time. With the empirical results, the performance measures are analyzed and compared to provide understanding of different failure scenarios in a RGG.

Bradonjic, Milan [Los Alamos National Laboratory; Hagberg, Aric [Los Alamos National Laboratory; Feng, Pan [Los Alamos National Laboratory

2011-01-28T23:59:59.000Z

253

Search advanced FYI Number 139: September 27, 2005  

E-Print Network [OSTI]

Search advanced search FYI Number 139: September 27, 2005 Chief of Majority Staff for Science." He said that the main issue will be timing. Search FYI Subscribe to FYI FYI This Month 2005 Archives

254

U-220: Google Android DNS Resolver Randomization Flaw Lets Remote Users  

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

0: Google Android DNS Resolver Randomization Flaw Lets Remote 0: Google Android DNS Resolver Randomization Flaw Lets Remote Users Poison the DNS Cache U-220: Google Android DNS Resolver Randomization Flaw Lets Remote Users Poison the DNS Cache July 25, 2012 - 7:00am Addthis PROBLEM: Google Android DNS Resolver Randomization Flaw Lets Remote Users Poison the DNS Cache PLATFORM: Version(s): 4.0.4 and prior versions ABSTRACT: A remote user can poison the DNS cache. reference LINKS: IBM Application Security Research Group SecurityTracker Alert ID: 1027291 Bugtraq ID: 523624 CVE-2012-2808 IMPACT ASSESSMENT: Medium Discussion: A vulnerability was reported in Google Android. The res_randomid() function, which bases a return value on the process ID and the current time, is called twice in quick succession. As a result, the effective

255

Random Subcarrier Allocation in OFDM-Based Cognitive Radio Networks and Hyper Fading Channels  

E-Print Network [OSTI]

: the limiting CDF distribution of the maximum of R RVs following a common Moschopoulos PDF and CDF converges to a Gumbel-type extreme value dis- tribution as R converges to in nity. A centralized sequential algorithm based on random allocation (utilization... Distribution [54]). Suppose that an urn contains n balls, of which r are red and n r are white. Let K denote the number of red balls drawn when taking m balls without replacement. Then, K is a hypergeometric random variable (RV) with parameters r, n and m...

Ekin, Sabit 1981-

2012-10-15T23:59:59.000Z

256

Battling bird flu by the numbers  

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

May » May » Battling bird flu by the numbers Battling bird flu by the numbers Lab theorists have developed a mathematical tool that could help health experts and crisis managers determine in real time whether an emerging infectious disease such as avian influenza H5N1 is poised to spread globally. May 27, 2008 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy

257

Dynamic theory of cascades on finite clustered random networks with a threshold rule  

Science Journals Connector (OSTI)

Cascade dynamics on networks are usually analyzed statically to determine existence criteria for cascades. Here, the Watts model of threshold dynamics on random Erd?s-Rényi networks is analyzed to determine the dynamic time evolution of cascades. The network is assumed to have a specific finite number of nodes n and is not assumed to be treelike. All combinations of threshold ?, network average nodal degree z, and seed sizes |S| from a single node up are included. The analysis permits study of network size effects and increased clustering coefficient. Several size effects not found by infinite network theory are predicted by the analysis and confirmed by simulations. In the region of ? and z where a single node can start a cascade, cascades are expanding, in the sense that each step flips a larger group than the previous step did. We show that this region extends to larger values of z than predicted by infinite network analyses. In the region where larger seeds are needed (size proportional to n), cascades begin by contracting: at the outset, each step flips fewer nodes than the previous step, but eventually the process reverses and becomes expanding. A critical mass that grows during the cascade beyond an easily-calculated threshold is identified as the cause of this reversal.

Daniel E. Whitney

2010-12-08T23:59:59.000Z

258

On rings of structural numbers  

E-Print Network [OSTI]

structural numbers over the set X, and let B(X) have the operations defined above with equality also as before. Theorem I. l. If X is any set, then B(X) is a commutative ring with identity. Proof. The structural number 0 is the additive identity element... with identity g. Definition I. 7. If A, B e S(X) then A'B = (P U q ( p e A, q e B, p Il q = &f and p U q can be formed in an odd number of ways). ~E1 t. 4. L t A = (( . b), (bj. 7 )) 4 B = ((b, c), (b), (a)) be in S(X) for some X. Then AD B = {{b, a), {a...

Powell, Wayne Bruce

2012-06-07T23:59:59.000Z

259

RENEWAL THEOREMS FOR RANDOM WALKS IN RANDOM SCENERY NADINE GUILLOTIN-PLANTARD AND FRANOISE PNE  

E-Print Network [OSTI]

RENEWAL THEOREMS FOR RANDOM WALKS IN RANDOM SCENERY NADINE GUILLOTIN-PLANTARD AND FRAN�OISE P�NE)n is recurrent) where h is some complex-valued function defined on R or Z. 1. Introduction Renewal theorems variables, renewal theorems were proved by Erdös, Feller and Pollard [11], Blackwell [1, 2], Breiman [6

Paris-Sud XI, Université de

260

RANDOM WALKS IN RANDOM LABYRINTHS G. R. Grimmett, M. V. Menshikov, S. E. Volkov  

E-Print Network [OSTI]

walk is recurrent if and only if a certain electrical network has infinite resistance. 1. Introduction. In addition, we utilise the relationship between random walks and electrical networks, namely that a random positive. It is elementary that j(0) = 1, and it is 1991 Mathematics Subject Classification. 60J15, 60K35

Grimmett, Geoffrey

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


261

RANDOM WALKS IN RANDOM LABYRINTHS G. R. Grimmett, M. V. Menshikov, S. E. Volkov  

E-Print Network [OSTI]

walk is recurrent if and only if a certain electrical network has in nite resistance. 1. Introduction. In addition, we utilise the relationship between random walks and electrical networks, namely that a random for which values of p it is the case the (p) is strictly positive. It is elementary that (0) = 1

Grimmett, Geoffrey

262

Efficient broadcast on random geometric graphs  

SciTech Connect (OSTI)

A Randon Geometric Graph (RGG) is constructed by distributing n nodes uniformly at random in the unit square and connecting two nodes if their Euclidean distance is at most r, for some prescribed r. They analyze the following randomized broadcast algorithm on RGGs. At the beginning, there is only one informed node. Then in each round, each informed node chooses a neighbor uniformly at random and informs it. They prove that this algorithm informs every node in the largest component of a RGG in {Omicron}({radical}n/r) rounds with high probability. This holds for any value of r larger than the critical value for the emergence of a giant component. In particular, the result implies that the diameter of the giant component is {Theta}({radical}n/r).

Bradonjic, Milan [Los Alamos National Laboratory; Elsasser, Robert [UNIV OF PADERBORN; Friedrich, Tobias [INTERNATIONAL COMPUTER SCI.; Sauerwald, Thomas [INTERNATIONAL COMPUTER SCI.

2009-01-01T23:59:59.000Z

263

Random matrix theory for underwater sound propagation  

Science Journals Connector (OSTI)

Ocean acoustic propagation can be formulated as a wave guide with a weakly random medium generating multiple scattering. Twenty years ago, this was recognized as a quantum chaos problem, and yet random matrix theory, one pillar of quantum or wave chaos studies, has never been introduced into the subject. The modes of the wave guide provide a representation for the propagation, which in the parabolic approximation is unitary. Scattering induced by the ocean's internal waves leads to a power-law random banded unitary matrix ensemble for long-range deep-ocean acoustic propagation. The ensemble has similarities, but differs, from those introduced for studying the Anderson metal-insulator transition. The resulting long-range propagation ensemble statistics agree well with those of full wave propagation using the parabolic equation.

K. C. Hegewisch; S. Tomsovic

2012-01-01T23:59:59.000Z

264

E-Print Network 3.0 - arrival time energy Sample Search Results  

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

Method: Compare predictions (core phase arrival times... filter 3. The scattered energy is randomly polarized, while the arrivals are not. The filter M... ). Comparison of...

265

Texas Rice, Volume VII, Number 7  

E-Print Network [OSTI]

Texas A&M University System Agricultural Research and Extension Center Beaumont, Texas September 2007 Volume VII Number 7 Texas Rice Nobel Peace Prize Recipient Dr. Norman Borlaug continued on page 4 September of 2003 was a time etched... Tabien, and Dr. Lee Tarpley. Four years ago this month, the Texas A&M Research and Exten- sion Center at Beaumont was hon- ored to welcome one of the most influential people in agriculture. Nobel Peace Prize recipient, Dr. Norman Borlaug, has a long...

266

The Mean Number of Extreme Lines in a Convex Hull of Lines  

Science Journals Connector (OSTI)

The dual problem of the mean number of extreme lines among n...chosen at random from a convex polygon of lines is defined, evaluations made for n=4 , 6, 20 and the asymptotic mean are shown to be the same as in t...

Gates

2002-01-01T23:59:59.000Z

267

Chaos in the random field Ising model  

Science Journals Connector (OSTI)

The sensitivity of the random field Ising model to small random perturbations of the quenched disorder is studied via exact ground states obtained with a maximum-flow algorithm. In one and two space dimensions we find a mild form of chaos, meaning that the overlap of the old, unperturbed ground state and the new one is smaller than 1, but extensive. In three dimensions the rearrangements are marginal (concentrated in the well defined domain walls). Implications for finite temperature variations and experiments are discussed.

Mikko Alava and Heiko Rieger

1998-10-01T23:59:59.000Z

268

Mie resonances to tailor random lasers  

SciTech Connect (OSTI)

In this paper, we present an optical characterization of photonic glass-based random lasers. We show how the resonant behavior of diffuse light transport through such systems can tailor the lasing emission when a gain medium is added to the glass. A DNA-based organic dye is used as gain medium. The resonances in the transport mean-free path influence the lasing wavelength of the random laser. The laser wavelength is therefore controlled by the sphere diameter. Furthermore, the existence of Mie resonances reduces the necessary pump energy to reach the lasing threshold.

Garcia, P. D.; Ibisate, M.; Sapienza, R.; Lopez, C. [Instituto de Ciencia de Materiales de Madrid (CSIC) and Unidad Asociada CSIC-UVigo, Cantoblanco, 28049 Madrid (Spain); Wiersma, D. S. [European Laboratory for Nonlinear Spectroscopy and INFM-BEC, Sesto Fiorentino, 50019 Florence (Italy)

2009-07-15T23:59:59.000Z

269

Computing Betti Numbers via Combinatorial Laplacians  

E-Print Network [OSTI]

Computing Betti Numbers via Combinatorial Laplacians method to compute Betti numbers of sim- plicial complexes. This has a number of advantages over are the Betti numbers, the i-th Betti number, bi= bi(X), being the rank of Hi(X). The Betti numbers often have

Friedman, Joel

270

Invisible Designated Confirmer Signatures without Random Oracles  

E-Print Network [OSTI]

Invisible Designated Confirmer Signatures without Random Oracles Victor K. Wei Dept. of Information the security notion called the "invisibility of signature" therein. 1 Introduction Chaum [9] introduced the DCS. However, [16, 15] did not achieve the security notion of the invisibility of signature [8]. In a nut

271

Invisible Designated Confirmer Signatures without Random Oracles  

E-Print Network [OSTI]

Invisible Designated Confirmer Signatures without Random Oracles Victor K. Wei Dept. of Information the security notion called the ''invisibility of signature'' therein. 1 Introduction Chaum [9] introduced)­size. However, [16, 15] did not achieve the security notion of the invisibility of signature [8

272

Diffusive limit for the random Lorentz gas  

E-Print Network [OSTI]

We review some recent results concerning the derivation of the diffusion equation and the validation of Fick's law for the microscopic model given by the random Lorentz Gas. These results are achieved by using a linear kinetic equation as an intermediate level of description between our original mechanical system and the diffusion equation.

Alessia Nota

2014-10-14T23:59:59.000Z

273

Development and comparison of algorithms for generating a scan sequence for a random access scanner. [ZAP (and flow charts for ZIP and SCAN), in FORTRAN for DEC-10  

SciTech Connect (OSTI)

Many data acquisition systems incorporate high-speed scanners to convert analog signals into digital format for further processing. Some systems multiplex many channels into a single scanner. A random access scanner whose scan sequence is specified by a table in random access memory will permit different scan rates on different channels. Generation of this scan table can be a tedious manual task when there are many channels (e.g. 50), when there are more than a few scan rates (e.g. 5), and/or when the ratio of the highest scan rate to the lowest scan rate becomes large (e.g. 100:1). An algorithm is developed which will generate these scan sequences for the random access scanner and implements the algorithm on a digital computer. Application of number theory to the mathematical statement of the problem led to development of several algorithms which were implemented in FORTRAN. The most efficient of these algorithms operates by partitioning the problem into a set of subproblems. Through recursion they solve each subproblem by partitioning it repeatedly into even smaller parts, continuing until a set of simple problems is created. From this process, a pictorial representation or wheel diagram of the problem can be constructed. From the wheel diagram and a description of the original problem, a scan table can be constructed. In addition, the wheel diagram can be used as a method of storing the scan sequence in a smaller amount of memory. The most efficient partitioning algorithm solved most scan table problems in less than a second of CPU time. Some types of problems, however, required as much as a few minutes of CPU time. 26 figures, 2 tables.

Eason, R. O.

1980-09-01T23:59:59.000Z

274

RIN Number 1904-AB68  

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

Federal Procurement of Energy Efficient Products Federal Procurement of Energy Efficient Products RIN NUMBER: 1904-AB68 CLOSING DATE: August 20, 2007 COMMENT NUMBER DATE RECEIVED/ DATE OF LETTER NAME & TITLE OF COMMENTATOR AFFILIATION & ADDRESS OF COMMENTATOR 1 ? 7/31/07 Edwin Pinero Federal Environmental Executive Office of the Federal Environmental Executive 1200 Pennsylvania Avenue, NW Mail Code 1600J Washington, DC 20460 2 8/8/07 (e-mail) Bob Null President Arkansas Lamp Manufacturing bnull@arkansaslamp.com 3 8/10/07 (e-mail) Dawn Gunning Environmental Program Manager Department of Justice Dawn.M.Gunning@usdoj.gov 4 8/14/07 8/14/07 Kyle Pitsor Vice President, Government Relations National Electrical Manufacturers Association 1300 North 17th Street, Suite 1752 Rosslyn, VA 22209

275

RIN Number 1904-AB68  

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

RULEMAKING TITLE: Federal Procurement of Energy Efficient Products RULEMAKING TITLE: Federal Procurement of Energy Efficient Products RIN NUMBER: 1904-AB68 CLOSING DATE: August 20, 2007 COMMENT NUMBER DATE RECEIVED/ DATE OF LETTER NAME & TITLE OF COMMENTATOR AFFILIATION & ADDRESS OF COMMENTATOR 1 ? 7/31/07 Edwin Pinero Federal Environmental Executive Office of the Federal Environmental Executive 1200 Pennsylvania Avenue, NW Mail Code 1600J Washington, DC 20460 2 8/8/07 (e-mail) Bob Null President Arkansas Lamp Manufacturing bnull@arkansaslamp.com 3 8/10/07 (e-mail) Dawn Gunning Environmental Program Manager Department of Justice Dawn.M.Gunning@usdoj.gov 4 8/14/07 8/14/07 Kyle Pitsor Vice President, Government Relations National Electrical Manufacturers Association 1300 North 17th Street, Suite 1752

276

CHANGING TIMES  

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

6, 2011 6, 2011 Kailey Yarmer Slide 2 Southwestern Power Administration Sub-agreement Distribution District Number of Sub-agreements District MWs $ Fort Worth 8 89 14,776,000 Kansas City 14 205 11,440,570 Little Rock 46 1,069 51,810,300 St. Louis 11 58 3,552,000 Tulsa 55 584 91,217,000 Vicksburg 18 169 11,345,000 Total 152 2,174 $184,140,870 Slide 3 Southwestern Power Administration Completed Sub-agreements District Number of Completed Sub-agreements $ Fort Worth 6 1,895,000 Kansas City 11 4,510,570 Little Rock 39 43,604,300 St. Louis 8 2,768,000 Tulsa 41 22,132,000 Vicksburg 11 3,051,000 Total 116 $77,960,870 Slide 4 Southwestern Power Administration Sub-agreement Status Status Number of Sub-agreements Complete 116 90% Complete 8 50 - 80% Complete 11 10 - 50% Complete 17 Total 152 In Development - 2008 3 In Development - 2009 3 In Development -

277

Randomized Belief-Space Replanning in Partially-Observable Continuous Spaces  

E-Print Network [OSTI]

and using the solution as a lookup table, RBSR repeatedly generates coarse plans, executes the first step. At each time step, it uses forward simulation of randomly-sampled open-loop controls to construct a belief-finding and localization examples in up to 5D state spacess. 1 Introduction Many robotics problems involve planning

Indiana University

278

The role of the Kubo number in two-component turbulence  

SciTech Connect (OSTI)

We explore the random walk of magnetic field lines in two-component turbulence by using computer simulations. It is often assumed that the two-component model provides a good approximation for solar wind turbulence. We explore the dependence of the field line diffusion coefficient on the Kubo number which is a fundamental and characteristic quantity in the theory of turbulence. We show that there are two transport regimes. One is the well-known quasilinear regime in which the diffusion coefficient is proportional to the Kubo number squared, and the second one is a nonlinear regime in which the diffusion coefficient is directly proportional to the Kubo number. The so-called percolative transport regime which is often discussed in the literature cannot be found. The numerical results obtained in the present paper confirm analytical theories for random walking field lines developed in the past.

Qin, G. [State Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190 (China)] [State Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190 (China); Shalchi, A. [Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2 (Canada)] [Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2 (Canada)

2013-09-15T23:59:59.000Z

279

Section 3.1: Random Variable Section 3.1 introduces the following concept re-  

E-Print Network [OSTI]

random variable problem. 3 #12;Second example of Section 3.1: Example 3.3. on textbook. · Two gas stations. · Let X be the total number of pumps in used. · Let Y be the difference of pumps in used be- tween stations 1 and 2. · Let U be the maximum of the pumps in used. · If the first has 2 in use

Zhang, Tonglin

280

Computing Betti Numbers via Combinatorial Joel Friedman  

E-Print Network [OSTI]

Computing Betti Numbers via Combinatorial Laplacians Joel Friedman Department of Mathematics 1984 Abstract We use the Laplacian and power method to compute Betti numbers of sim­ plicial complexes. This has are the Betti numbers, the i­th Betti number, b i = b i (X), being the rank of H i (X). The Betti numbers often

Friedman, Joel

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


281

Grantee Total Number of Homes  

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

Grantee Grantee Total Number of Homes Weatherized through November 2011 [Recovery Act] Total Number of Homes Weatherized through November 2011 (Calendar Year 2009 - November 2011) [Recovery Act + Annual Program Funding] Alabama 6,704 7,867 1 Alaska 443 2,363 American Samoa 304 410 Arizona 6,354 7,518 Arkansas 5,231 6,949 California 41,649 50,002 Colorado 12,782 19,210 Connecticut 8,940 10,009 2 Delaware** 54 54 District of Columbia 962 1,399 Florida 18,953 20,075 Georgia 13,449 14,739 Guam 574 589 Hawaii 604 1,083 Idaho** 4,470 6,614 Illinois 35,530 44,493 Indiana** 18,768 21,689 Iowa 8,794 10,202 Kansas 6,339 7,638 Kentucky 7,639 10,902 Louisiana 4,698 6,946 Maine 5,130 6,664 Maryland 8,108 9,015 Massachusetts 17,687 21,645 Michigan 29,293 37,137 Minnesota 18,224 22,711 Mississippi 5,937 6,888 Missouri 17,334 20,319 Montana 3,310 6,860 Navajo Nation

282

Evidence of randomness in United States spot oil prices  

SciTech Connect (OSTI)

This study investigates U.S. crude oil spot-market prices to determine if they were cyclical, autoregressive, or random in nature. The fact that oil-price volatility emerged only with the rise of spot markets meant that data for this type of an analysis were not previously available. The hypothesis tested was that U.S. crude oil price changes are neither cyclical nor autocorrelated, and are, therefore, random. Daily data on U.S. crude oil spot market prices (for the period of December 3, 1984 to November 4, 1988) were analyzed using spectral analysis; this converts time-series data into a frequency series, where it can be analyzed using more-powerful statistical methods. The spectral results of the price series gave a maximum power spectrum of 0.026, which is considerably smaller than the significance level of 0.052, considered acceptable using a 99% confidence level. The conclusion reached was that there was no significant cyclicality or autocorrelation in the data. This indicated that the U.S. crude oil prices are efficient, and that it would not be possible to predict crude oil price changes by using historical price data, seasonality, or business cycles.

Howard, B.W.

1989-01-01T23:59:59.000Z

283

From Boltzmann to random matrices and beyond  

E-Print Network [OSTI]

These expository notes propose to follow, across fields, some aspects of the concept of entropy. Starting from the work of Boltzmann in the kinetic theory of gases, various universes are visited, including Markov processes and their Helmholtz free energy, the Shannon monotonicity problem in the central limit theorem, the Voiculescu free probability theory and the free central limit theorem, random walks on regular trees, the circular law for the complex Ginibre ensemble of random matrices, and finally the asymptotic analysis of mean-field particle systems in arbitrary dimension, confined by an external field and experiencing singular pair repulsion. The text is written in an informal style driven by energy and entropy. It aims to be recreative and to provide to the curious readers entry points in the literature, and connections across boundaries.

Djalil Chafaï

2014-07-03T23:59:59.000Z

284

Fast randomized point location without preprocessing in two- and three-dimensional Delaunay triangulations  

SciTech Connect (OSTI)

This paper studies the point location problem in Delaunay triangulations without preprocessing and additional storage. The proposed procedure finds the query point simply by walking through the triangulation, after selecting a good starting point by random sampling. The analysis generalizes and extends a recent result of d = 2 dimensions by proving this procedure to take expected time close to O(n{sup 1/(d+1)}) for point location in Delaunay triangulations of n random points in d = 3 dimensions. Empirical results in both two and three dimensions show that this procedure is efficient in practice.

Muecke, E.P.; Saias, I.; Zhu, B.

1996-05-01T23:59:59.000Z

285

Maximum edge-cuts in~cubic graphs with large girth and in~random cubic graphs  

E-Print Network [OSTI]

We show that for every cubic graph G with sufficiently large girth there exists a probability distribution on edge-cuts of G such that each edge is in a randomly chosen cut with probability at least 0.88672. This implies that G contains an edge-cut of size at least 1.33008n, where n is the number of vertices of G, and has fractional cut covering number at most 1.12776. The lower bound on the size of maximum edge-cut also applies to random cubic graphs. Specifically, a random n-vertex cubic graph a.a.s. contains an edge cut of size 1.33008n.

Kardos, Frantisek; Volec, Jan

2011-01-01T23:59:59.000Z

286

Lens aberration aware placement for timing yield  

Science Journals Connector (OSTI)

Process variations due to lens aberrations are to a large extent systematic, and can be modeled for purposes of analyses and optimizations in the design phase. Traditionally, variations induced by lens aberrations have been considered random due to their ... Keywords: Layout, design for manufacturing, lithography, timing yield

Andrew B. Kahng; Chul-Hong Park; Puneet Sharma; Qinke Wang

2009-01-01T23:59:59.000Z

287

arXiv:1101.4041v1[math.PR]20Jan2011 Randomly biased walks on subcritical trees  

E-Print Network [OSTI]

arXiv:1101.4041v1[math.PR]20Jan2011 Randomly biased walks on subcritical trees G´erard Ben Arous study the time taken for a biased random walk to return to the root of a subcritical Galton-Watson tree by the presence of subcritical trees adjacent to the backbone that may act as traps that detain the walker. Indeed

Goldschmidt, Christina

288

Optimal quantum control using randomized benchmarking  

E-Print Network [OSTI]

We present a method for optimizing quantum control in experimental systems, using a subset of randomized benchmarking measurements to rapidly infer error. This is demonstrated to improve single- and two-qubit gates, minimize gate bleedthrough, where a gate mechanism can cause errors on subsequent gates, and identify control crosstalk in superconducting qubits. This method is able to correct parameters to where control errors no longer dominate, and is suitable for automated and closed-loop optimization of experimental systems.

J. Kelly; R. Barends; B. Campbell; Y. Chen; Z. Chen; B. Chiaro; A. Dunsworth; A. G. Fowler; I. -C. Hoi; E. Jeffrey; A. Megrant; J. Mutus; C. Neill; P. J. J. O`Malley; C. Quintana; P. Roushan; D. Sank; A. Vainsencher; J. Wenner; T. C. White; A. N. Cleland; John M. Martinis

2014-03-01T23:59:59.000Z

289

Chopped random-basis quantum optimization  

E-Print Network [OSTI]

In this work we describe in detail the "Chopped RAndom Basis" (CRAB) optimal control technique recently introduced to optimize t-DMRG simulations [arXiv:1003.3750]. Here we study the efficiency of this control technique in optimizing different quantum processes and we show that in the considered cases we obtain results equivalent to those obtained via different optimal control methods while using less resources. We propose the CRAB optimization as a general and versatile optimal control technique.

Tommaso Caneva; Tommaso Calarco; Simone Montangero

2011-08-22T23:59:59.000Z

290

Random Matrix Theory and its Innovative Applications  

E-Print Network [OSTI]

values or eigenvalues of random matrices. (Usually it is enough to know the quarter circle law, the semi normal, then the eigen- values of the Wishart matrix AT A/m in the limit as m/n = r and m,n are almost. In one exam- ple (Figure 7), Popoff et al. [20] use the fact that the distribution of the singular values

Edelman, Alan

291

Two distinct mechanisms of coherence in randomly perturbed dynamical systems R. E. Lee DeVille and Eric Vanden-Eijnden  

E-Print Network [OSTI]

Two distinct mechanisms of coherence in randomly perturbed dynamical systems R. E. Lee De mechanisms--coherence resonance and self-induced stochastic resonance--by which small random perturbations of excitable systems with large time scale separation may lead to the emergence of new coherent behaviors

Van Den Eijnden, Eric

292

Digestion time  

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

Digestion time Digestion time Name: Don Mancosh Location: N/A Country: N/A Date: N/A Question: I have always given the rule of thumb in class that material we eat is with us for about 24 hours before exiting the body. The question arises about the time value of liquids. Getting a big coke prior to a 3 hour drive generally means that there will be a stop along the way. Is there a generalization made about liquids in the body similar to the one for solid food? Replies: A physician would give a better answer, but I hazard this: the only liquids which people consume (deliberately) in significant quantities are water, ethyl alcohol and various oils. Water and alcohol are absorbed on a time scale of seconds to minutes through the mouth, stomach and digestive tract. The oils are huge molecules, so I'd guess like any other greasy food they get absorbed in the upper digestive tract. Some of them, perhaps the longest and most nonpolar, are not absorbed at all --- cf. the old-time remedy of mineral oil for constipation --- so there should be some average time-before-what's-left-is-excreted such as you're looking for, and my (wild) guess is that it would not differ substantially from that for food. You can define an average lifetime in the body for alcohol, since the natural level is zero. Rough guidelines are widespread in the context of drunk driving laws. But this is not really possible for water. One's body is normally full up to the brim with water, and there's no way for the body to distinguish between water molecules recently absorbed and molecules that've been moping around since the Beatles split up. Thus the water entering the toilet bowl after the pit stop is not in general the same water as was in the big coke. If you were to consider for water just the average time between drinking and peeing, it would seem to depend strongly on how well hydrated the body was before the drink, and how much was drunk. During sustained heavy exertion in the sun and dry air one can easily drink a pint of water an hour without peeing at all. On the other hand, if one is willing to drink enough water fast enough, so as to establish a high excess of body water one can pee 8 ounces 15 minutes or less after drinking 8 ounces.

293

Safeguarding Quantum Key Distribution through Detection Randomization  

E-Print Network [OSTI]

We propose and experimentally demonstrate a scheme to render the detection apparatus of a Quantum Key Distribution system immune to the main classes of hacking attacks in which the eavesdropper explores the back-door opened by the single-photon detectors. The countermeasure is based on the creation of modes that are not deterministically accessible to the eavesdropper. We experimentally show that the use of beamsplitters and extra single-photon detectors at the receiver station passively creates randomized spatial modes that erase any knowledge the eavesdropper might have gained when using bright-light faked states. Additionally, we experimentally show a detector-scrambling approach where the random selection of the detector used for each measurement - equivalent to an active spatial mode randomization - hashes out the side-channel open by the detection efficiency mismatch-based attacks. The proposed combined countermeasure represents a practical and readily implementable solution against the main classes of quantum hacking attacks aimed on the single-photon detector so far, without intervening on the inner working of the devices.

Thiago Ferreira da Silva; Gustavo C. do Amaral; Guilherme B. Xavier; Guilherme P. Temporão; Jean Pierre von der Weid

2014-10-02T23:59:59.000Z

294

Total Number of Operable Refineries  

U.S. Energy Information Administration (EIA) Indexed Site

Data Series: Total Number of Operable Refineries Number of Operating Refineries Number of Idle Refineries Atmospheric Crude Oil Distillation Operable Capacity (B/CD) Atmospheric Crude Oil Distillation Operating Capacity (B/CD) Atmospheric Crude Oil Distillation Idle Capacity (B/CD) Atmospheric Crude Oil Distillation Operable Capacity (B/SD) Atmospheric Crude Oil Distillation Operating Capacity (B/SD) Atmospheric Crude Oil Distillation Idle Capacity (B/SD) Vacuum Distillation Downstream Charge Capacity (B/SD) Thermal Cracking Downstream Charge Capacity (B/SD) Thermal Cracking Total Coking Downstream Charge Capacity (B/SD) Thermal Cracking Delayed Coking Downstream Charge Capacity (B/SD Thermal Cracking Fluid Coking Downstream Charge Capacity (B/SD) Thermal Cracking Visbreaking Downstream Charge Capacity (B/SD) Thermal Cracking Other/Gas Oil Charge Capacity (B/SD) Catalytic Cracking Fresh Feed Charge Capacity (B/SD) Catalytic Cracking Recycle Charge Capacity (B/SD) Catalytic Hydro-Cracking Charge Capacity (B/SD) Catalytic Hydro-Cracking Distillate Charge Capacity (B/SD) Catalytic Hydro-Cracking Gas Oil Charge Capacity (B/SD) Catalytic Hydro-Cracking Residual Charge Capacity (B/SD) Catalytic Reforming Charge Capacity (B/SD) Catalytic Reforming Low Pressure Charge Capacity (B/SD) Catalytic Reforming High Pressure Charge Capacity (B/SD) Catalytic Hydrotreating/Desulfurization Charge Capacity (B/SD) Catalytic Hydrotreating Naphtha/Reformer Feed Charge Cap (B/SD) Catalytic Hydrotreating Gasoline Charge Capacity (B/SD) Catalytic Hydrotreating Heavy Gas Oil Charge Capacity (B/SD) Catalytic Hydrotreating Distillate Charge Capacity (B/SD) Catalytic Hydrotreating Kerosene/Jet Fuel Charge Capacity (B/SD) Catalytic Hydrotreating Diesel Fuel Charge Capacity (B/SD) Catalytic Hydrotreating Other Distillate Charge Capacity (B/SD) Catalytic Hydrotreating Residual/Other Charge Capacity (B/SD) Catalytic Hydrotreating Residual Charge Capacity (B/SD) Catalytic Hydrotreating Other Oils Charge Capacity (B/SD) Fuels Solvent Deasphalting Charge Capacity (B/SD) Catalytic Reforming Downstream Charge Capacity (B/CD) Total Coking Downstream Charge Capacity (B/CD) Catalytic Cracking Fresh Feed Downstream Charge Capacity (B/CD) Catalytic Hydro-Cracking Downstream Charge Capacity (B/CD) Period:

295

An avalanche-photodiode-based photon-number-resolving detector  

E-Print Network [OSTI]

Avalanche photodiodes are widely used as practical detectors of single photons.1 Although conventional devices respond to one or more photons, they cannot resolve the number in the incident pulse or short time interval. However, such photon number resolving detectors are urgently needed for applications in quantum computing,2-4 communications5 and interferometry,6 as well as for extending the applicability of quantum detection generally. Here we show that, contrary to current belief,3,4 avalanche photodiodes are capable of detecting photon number, using a technique to measure very weak avalanches at the early stage of their development. Under such conditions the output signal from the avalanche photodiode is proportional to the number of photons in the incident pulse. As a compact, mass-manufactured device, operating without cryogens and at telecom wavelengths, it offers a practical solution for photon number detection.

B. E. Kardynal; Z. L. Yuan; A. J. Shields

2008-07-02T23:59:59.000Z

296

Improved approximation algorithm for the jump number of interval orders  

Science Journals Connector (OSTI)

Abstract The jump number problem for posets is to find a linear extension in which the number of incomparable adjacent pairs is minimized. In this paper the class of interval orders is considered. Three 3/2-approximation algorithms for this problem have been known for some time. By a previous work of Mitas, the problem may be reformulated as a subgraph packing task. We prove that the problem reduces also to a set cover task, and we establish an improved bound of 1.484 to the approximation ratio of the jump number on interval orders.

Przemys?aw Krysztowiak

2013-01-01T23:59:59.000Z

297

Particle Number & Particulate Mass Emissions Measurements on...  

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

Number & Particulate Mass Emissions Measurements on a 'Euro VI' Heavy-duty Engine using the PMP Methodologies Particle Number & Particulate Mass Emissions Measurements on a 'Euro...

298

Alternative Fuels Data Center: Renewable Identification Numbers  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

Renewable Renewable Identification Numbers to someone by E-mail Share Alternative Fuels Data Center: Renewable Identification Numbers on Facebook Tweet about Alternative Fuels Data Center: Renewable Identification Numbers on Twitter Bookmark Alternative Fuels Data Center: Renewable Identification Numbers on Google Bookmark Alternative Fuels Data Center: Renewable Identification Numbers on Delicious Rank Alternative Fuels Data Center: Renewable Identification Numbers on Digg Find More places to share Alternative Fuels Data Center: Renewable Identification Numbers on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Renewable Identification Numbers RIN Format EPA uses the following format to determine RINs for each physical gallon of

299

Spectral behavior of partially pumped weakly scattering random lasers  

E-Print Network [OSTI]

. D. S. Wiersma, M. P. van Albada, and A. Lagendijk, "Random laser?" Nature 373, 203­204 (1995). 8. H

Cao, Hui

300

Persistence of Random Walk Records E. Ben-Naim1  

E-Print Network [OSTI]

phenomenol- ogy [35, 36]. For a sequence of uncorrelated random vari- ables, the probability that all records

Ben-Naim, Eli

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


301

Sharp thresholds for Hamiltonicity in random intersection graphs  

Science Journals Connector (OSTI)

Random Intersection Graphs, G"n","m","p, is a class of random graphs introduced in Karonski (1999) [7] where each of the n vertices chooses independently a random subset of a universal set of m elements. Each element of the universal sets is chosen independently ... Keywords: Hamilton cycles, Random intersection graph, Sharp threshold, Stochastic order relation between Gn,p and Gn,m,p

Charilaos Efthymiou; Paul G. Spirakis

2010-09-01T23:59:59.000Z

302

Pseudo winding numbers and the spherical ansatz  

Science Journals Connector (OSTI)

The path-dependent surface/time integral contribution to the topological charge in an SO(3) Yang - Mills theory is studied for paths in field space that interpolate between a background gauge field in the remote past and a gauge transform of it in the remote future. The possibility of existence of such paths along which this integral vanishes for a given initial background gauge field is related to the action of the group of gauge transformations of real, pseudo winding numbers on the physical states of the theory in the background gauge field. The analysis takes a particularly transparent form for the spherically-symmetric fields of the spherical ansatz, leading to a simple interpretation of the results.

Ahmed Abouelsaood

1997-01-01T23:59:59.000Z

303

Enhancement of spatiotemporal regularity in an optimal window of random coupling  

Science Journals Connector (OSTI)

We investigate the spatiotemporal dynamics of a lattice of coupled chaotic maps whose coupling connections are dynamically rewired to random sites with probability p; namely, at any instance of time, with probability p a regular link is switched to a random one. In a range of weak coupling, where spatiotemporal chaos exists for regular lattices (i.e., for p=0), we find that p>0 yields synchronized periodic orbits. Further, we observe that this regularity occurs over a window of p values, beyond which the basin of attraction of the synchronized cycle shrinks to zero. Thus we have evidence of an optimal range of randomness in coupling connections, where spatiotemporal regularity is efficiently obtained. This is in contrast to the commonly observed monotonic increase of synchronization with increasing p, as seen, for instance, in the strong-coupling regime of the very same system.

Swarup Poria; Manish Dev Shrimali; Sudeshna Sinha

2008-09-11T23:59:59.000Z

304

The Ising model in a random field Christof Kulske  

E-Print Network [OSTI]

The Ising model in a random field Christof K¨ulske Department of Mathematics and Computing Sciences University of Groningen, Nijenborgh 9, 9747 AG,Groningen, the Netherlands February 22, 2008 1 #12;1 The Ising model in a random field The Ising model in a random field is a prominent example of a lattice spin model

Külske, Christof

305

SHARP THRESHOLDS FOR THE RANDOM-CLUSTER AND ISING MODELS  

E-Print Network [OSTI]

SHARP THRESHOLDS FOR THE RANDOM-CLUSTER AND ISING MODELS BENJAMIN GRAHAM AND GEOFFREY GRIMMETT. The models in question are the random-cluster model near the self-dual point psd(q) = q/(1 + q), the Ising in statistical physics, namely those of the random-cluster model and the Ising model. In each case, the event

Grimmett, Geoffrey

306

Conformal Deformation from Normal to Hermitian Random Matrix Ensembles  

E-Print Network [OSTI]

We investigate the eigenvalues statistics of ensembles of normal random matrices when their order N tends to infinite. In the model the eigenvalues have uniform density within a region determined by a simple analytic polynomial curve. We study the conformal deformations of normal random ensembles to Hermitian random ensembles and give sufficient conditions for the latter to be a Wigner ensemble.

Alexei M. Veneziani; Tiago Pereira; Domingos H. U. Marchetti

2009-09-04T23:59:59.000Z

307

On the Connectivities of Subcritical Random Cluster Models  

E-Print Network [OSTI]

On the Connectivities of Subcritical Random Cluster Models M. Campanino (Bologna) D. Ioffe (Haifa) Y. Velenik (Geneva) M. Campanino, D. Ioffe, Y. Velenik On the Connectivities of Subcritical Random Introduction The random cluster model Main assumption The sets U and K 2 Results Results for subcritical models

Velenik, Yvan

308

Female Team Overall Name Age Rank Time Rank Time Rank Time Pace Rank Time Rank Time Pace Time  

E-Print Network [OSTI]

Female Team Overall Name Age Rank Time Rank Time Rank Time Pace Rank Time Rank Time Pace Time 1 Amy:56:27.6 Deborah Mc Eligot Deborah Storrings Male Team Overall Name Age Rank Time Rank Time Rank Time Pace Rank Time Rank Time Pace Time 1 Macon Fessenden 20 1 5:42.2 2 0:26.9 1 34:29.7 3:23 1 0:12.8 1 17:41.1 3

Suzuki, Masatsugu

309

A time-series approach to dynamical systems from classical and quantum worlds  

SciTech Connect (OSTI)

This contribution discusses some recent applications of time-series analysis in Random Matrix Theory (RMT), and applications of RMT in the statistial analysis of eigenspectra of correlation matrices of multivariate time series.

Fossion, Ruben [Instituto Nacional de Geriatría, Periférico Sur No. 2767, Col. San Jerónimo Lídice, Del. Magdalena Contreras, 10200 México D.F., Mexico and Centro de Ciencias de la Complejidad (C3), Universidad Nacional Autó (Mexico)

2014-01-08T23:59:59.000Z

310

Verification Challenges at Low Numbers  

SciTech Connect (OSTI)

Many papers have dealt with the political difficulties and ramifications of deep nuclear arms reductions, and the issues of “Going to Zero”. Political issues include extended deterrence, conventional weapons, ballistic missile defense, and regional and geo-political security issues. At each step on the road to low numbers, the verification required to ensure compliance of all parties will increase significantly. Looking post New START, the next step will likely include warhead limits in the neighborhood of 1000 . Further reductions will include stepping stones at1000 warheads, 100’s of warheads, and then 10’s of warheads before final elimination could be considered of the last few remaining warheads and weapons. This paper will focus on these three threshold reduction levels, 1000, 100’s, 10’s. For each, the issues and challenges will be discussed, potential solutions will be identified, and the verification technologies and chain of custody measures that address these solutions will be surveyed. It is important to note that many of the issues that need to be addressed have no current solution. In these cases, the paper will explore new or novel technologies that could be applied. These technologies will draw from the research and development that is ongoing throughout the national laboratory complex, and will look at technologies utilized in other areas of industry for their application to arms control verification.

Benz, Jacob M.; Booker, Paul M.; McDonald, Benjamin S.

2013-06-01T23:59:59.000Z

311

Multiplicative cascades and seismicity in natural time  

Science Journals Connector (OSTI)

Natural time ? enables the distinction of two origins of self-similarity, i.e., the process memory and the process increments infinite variance. Employing multiplicative cascades in natural time, the most probable value of the variance ?1(???2?????2) is explicitly related with the parameter b of the Gutenberg-Richter law of randomly shuffled earthquake data. Moreover, the existence of temporal and magnitude correlations is studied in the original earthquake data. Magnitude correlations are larger for closer in time earthquakes, when the maximum interoccurrence time varies from half a day to 1 min.

N. V. Sarlis; E. S. Skordas; P. A. Varotsos

2009-08-11T23:59:59.000Z

312

Betti numbers, Morse theory, and homology Perturbations  

E-Print Network [OSTI]

Betti numbers, Morse theory, and homology Perturbations Cascades Multicomplexes Morse and Morse Hurtubise Morse and Morse-Bott Homology #12;Betti numbers, Morse theory, and homology Perturbations Cascades Multicomplexes Betti numbers, Morse theory, and homology Betti numbers Morse inequalities Transversality Morse

Hurtubise, David E.

313

Experimental Analysis of a Piezoelectric Energy Harvesting System for Harmonic, Random, and Sine on Random Vibration  

SciTech Connect (OSTI)

Formal journal article Experimental analysis of a piezoelectric energy harvesting system for harmonic, random, and sine on random vibration Abstract: Harvesting power with a piezoelectric vibration powered generator using a full-wave rectifier conditioning circuit is experimentally compared for varying sinusoidal, random and sine on random (SOR) input vibration scenarios. Additionally, the implications of source vibration characteristics on harvester design are discussed. Studies in vibration harvesting have yielded numerous alternatives for harvesting electrical energy from vibrations but piezoceramics arose as the most compact, energy dense means of energy transduction. The rise in popularity of harvesting energy from ambient vibrations has made piezoelectric generators commercially available. Much of the available literature focuses on maximizing harvested power through nonlinear processing circuits that require accurate knowledge of generator internal mechanical and electrical characteristics and idealization of the input vibration source, which cannot be assumed in general application. In this manuscript, variations in source vibration and load resistance are explored for a commercially available piezoelectric generator. We characterize the source vibration by its acceleration response for repeatability and transcription to general application. The results agree with numerical and theoretical predictions for in previous literature that load optimal resistance varies with transducer natural frequency and source type, and the findings demonstrate that significant gains are seen with lower tuned transducer natural frequencies for similar source amplitudes. Going beyond idealized steady state sinusoidal and simplified random vibration input, SOR testing allows for more accurate representation of real world ambient vibration. It is shown that characteristic interactions from more complex vibrational sources significantly alter power generation and power processing requirements by increasing harvested power, shifting optimal conditioning impedance, inducing significant voltage supply fluctuations and ultimately rendering idealized sinusoidal and random analyses insufficient.

Cryns, Jackson W.; Hatchell, Brian K.; Santiago-Rojas, Emiliano; Silvers, Kurt L.

2013-07-01T23:59:59.000Z

314

Statistical regimes of random laser fluctuations  

SciTech Connect (OSTI)

Statistical fluctuations of the light emitted from amplifying random media are studied theoretically and numerically. The characteristic scales of the diffusive motion of light lead to Gaussian or power-law (Levy) distributed fluctuations depending on external control parameters. In the Levy regime, the output pulse is highly irregular leading to huge deviations from a mean-field description. Monte Carlo simulations of a simplified model which includes the population of the medium demonstrate the two statistical regimes and provide a comparison with dynamical rate equations. Different statistics of the fluctuations helps to explain recent experimental observations reported in the literature.

Lepri, Stefano [Istituto dei Sistemi Complessi, Consiglio Nazionale delle Ricerche, via Madonna del Piano 10, I-50019 Sesto Fiorentino (Italy); Cavalieri, Stefano [Dipartimento di Fisica, Universita di Firenze, via G. Sansone 1, I-50019 Sesto Fiorentino (Italy); European Laboratory for Non-linear Spectroscopy, via N. Carrara 1, I-50019 Sesto Fiorentino (Italy); Oppo, Gian-Luca [SUPA and Department of Physics, University of Strathclyde, 107 Rottenrow, Glasgow, G4 0NG, Scotland (United Kingdom); Wiersma, Diederik S. [European Laboratory for Non-linear Spectroscopy, via N. Carrara 1, I-50019 Sesto Fiorentino (Italy); BEC-INFM Center, I-38050 Povo, Trento (Italy)

2007-06-15T23:59:59.000Z

315

Percolation model for relaxation in random systems  

Science Journals Connector (OSTI)

We have measured the magnetic relaxation of several Au:Fe alloys from 10-5 to 104 sec after removing an applied field. The quality and range of the data are sufficient to demonstrate significant deviations from all functions previously used to characterize the dynamics of similar systems. A simple model, activated relaxation of dispersive excitations on a percolation distribution of finite-sized domains, gives excellent agreement with the measurements and may provide a common link between fundamental excitations and observed behavior in random systems.

R. V. Chamberlin and D. N. Haines

1990-10-22T23:59:59.000Z

316

Gaussian random field models of aerogels  

Science Journals Connector (OSTI)

A model capable of predicting pore characteristics and rendering representative images of porous materials is described. A long-term goal is to discriminate between open and closed porosities. Aerogels are modeled by intersecting excursion sets of two independent Gaussian random fields. The parameters of these fields are obtained by matching small-angle neutron scattering data with the scattering function for the model. The chord-length probability density functions are then computed for the model which contain partial clustering information for the aerogels. Visualizations of this model are performed and compared to electron microscopy images and gas adsorption pore size distributions.

J. Quintanilla; R. F. Reidy; B. P. Gorman; D. W. Mueller

2003-01-01T23:59:59.000Z

317

Insulation failure assessment under random energization overvoltages  

SciTech Connect (OSTI)

This paper offers a new simple approach to the evaluation of the risk of failure of external insulation in view of their known probabilistic nature. This is applied to EHV transmission systems subjected to energization overvoltages. The randomness, both in the applied stresses and insulation`s withstand characteristics are numerically simulated and then integrated to assess the risk of failure. Overvoltage control methods are accounted for, such as the use of pre-insertion breaker resistors, series capacitive compensation, and the installation of shunt reactors.

Mahdy, A.M.; Anis, H.I. [Cairo Univ. (Egypt)] [Cairo Univ. (Egypt); El-Morshedy, A. [Faculty of Science for Girls, Dammam (Saudi Arabia)] [Faculty of Science for Girls, Dammam (Saudi Arabia)

1996-03-01T23:59:59.000Z

318

h-analogue of Fibonacci Numbers  

E-Print Network [OSTI]

In this paper, we introduce the h-analogue of Fibonacci numbers for non-commutative h-plane. For h h'= 1 and h = 0, these are just the usual Fibonacci numbers as it should be. We also derive a collection of identities for these numbers. Furthermore, h-Binet's formula for the h-Fibonacci numbers is found and the generating function that generates these numbers is obtained.

H. B. Benaoum

2009-09-30T23:59:59.000Z

319

RL-721 Document ID Number:  

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

4 4 I. Project Title: Washington River Protection Solutions & Advanced Technologies & Laboratories International- Proposed Actions For CY 2012 Scheduled To Take Place Under CX B3.6, "Small-Scale Research and Development, Laboratory Operations, and Pilot Projects" II. Project Description and Location (including Time Period over which proposed action will occur and Project Dimensions· e.g., acres displaced/disturbed, excavation length/depth, etc.): Washington River Protection Solutions LLC (WRPS) & Advanced Technologies & Laboratories International Inc. (ATL) will perform indoor bench-scale & small-scale research & development projects, conventional laboratory operations, & pilot projects to verify proof- of-concept, on & near the Hanford Site during Calendar Year 2012. WRPS & ATL will perform

320

RL-721 Document ID Number:  

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

61 61 I. Project Title: Washington River Protection Solutions LLC - Proposed Actions For CY 2012 Scheduled To Take Place Under CX B2.5, "Facility Safety and Environmental Improvements" II. Project Description and Location (including Time Period over which proposed action will occur and Project Dimensions - e.g., acres displaced/disturbed, excavation length/depth, etc.): Washington River Protection Solutions LLC (WRPS) will perform safety and environmental improvements of a facility, including the replacement/upgrade of facility components on & near the Hanford Site during Calendar Year 2012. WRPS will perform all activities in accordance with the categorical exclusion (CX) limitations set forth in 10 CFR 1021, Appendices A & B to Subpart 0, & CX B2.5. WRPS' facilities include all those identified in

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While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

RL-721 Document ID Number:  

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

9 9 I. Project Title: Washington River Protection Solutions LLC - Proposed Actions For CY 2012 Scheduled To Take Place Under CX B1. 22, "Relocation of Buildings" II. Project Description and Location (including Time Period over which proposed action will occur and Project Dimensions - e.g., acres displaced/disturbed, excavation length/depth, etc.): Washington River Protection Solutions LLC (WRPS) will relocate buildings on & near the Hanford Site during Calendar Year 2012. WRPS will perform all activities in accordance with the categorical exclusion (CX) limitations set forth in 10 CFR 1021, Appendices A & B to Subpart D, & CX B1. 22. WRPS' facilities include all those identified in the Tank Operations Contract Sections J.13 and J.14. Activities would include, but are not

322

Beam-beam interaction and Pacman effects in the SSC with random nonlinear multipoles  

SciTech Connect (OSTI)

In order to find the combined effects of beam-beam interaction (head-on and long-range) and random nonlinear multipoles in dipole magnets, transverse tunes and smears have been calculated as a function of oscillation amplitudes. Two types of particles, ''regular'' and ''Pacman,'' have been investigated using a modified version of tracking code TEAPOT. Regular particles experience beam-beam interactions in all four interaction regions (IR's), both head-on and long range, while pacman particles interact with bunches of the other beam in one medium-beta and one low-beta IR's only. The model for the beam-beam interaction is of weak-strong type and the strong beam is assumed to have a round Gaussian charge distribution. Furthermore, it is assumed that the vertical closed orbit deviation arising from the finite crossing angle of 70 ..mu..rad is perfectly compensated for regular particles. The same compensation applied to pacman particles creates a closed orbit distortion. Linear tunes are adjusted for regular particles to the design values but there are no nonlinear corrections except for chromaticity correcting sextupoles in two families. Results obtained in this study do not show any reduction of dynamic or linear aperture for pacman particles but some doubts exist regarding the validity of defining the linear aperture from the smear alone. Preliminary results are given for regular particles when (..delta..p/p) is modulated by the synchrotron oscillation. For these, fifty oscillations corresponding to 26,350 revolutions have been tracked. A very slow increase in the horizontal amplitude, /approximately/4 /times/ 10/sup /minus/4//oscillation (relative), is a possibility but this should be confirmed by trackings of larger number of revolutions. 11 refs., 18 figs., 2 tabs.

Goderre, G.P.; Ohnuma, S.

1988-01-01T23:59:59.000Z

323

Effects of a random spatial variation of the plasma density on the mode conversion in cold, unmagnetized, and stratified plasmas  

SciTech Connect (OSTI)

We study the effects of a random spatial variation of the plasma density on the mode conversion of electromagnetic waves into electrostatic oscillations in cold, unmagnetized, and stratified plasmas. Using the invariant imbedding method, we calculate precisely the electromagnetic field distribution and the mode conversion coefficient, which is defined to be the fraction of the incident wave power converted into electrostatic oscillations, for the configuration where a numerically generated random density variation is added to the background linear density profile. We repeat similar calculations for a large number of random configurations and take an average of the results. We obtain a peculiar nonmonotonic dependence of the mode conversion coefficient on the strength of randomness. As the disorder increases from zero, the maximum value of the mode conversion coefficient decreases initially, then increases to a maximum, and finally decreases towards zero. The range of the incident angle in which mode conversion occurs increases monotonically as the disorder increases. We present numerical results suggesting that the decrease of mode conversion mainly results from the increased reflection due to the Anderson localization effect originating from disorder, whereas the increase of mode conversion of the intermediate disorder regime comes from the appearance of many resonance points and the enhanced tunneling between the resonance points and the cutoff point. We also find a very large local enhancement of the magnetic field intensity for particular random configurations. In order to obtain high mode conversion efficiency, it is desirable to restrict the randomness close to the resonance region.

Jung Yu, Dae [School of Space Research, Kyung Hee University, Yongin 446-701 (Korea, Republic of)] [School of Space Research, Kyung Hee University, Yongin 446-701 (Korea, Republic of); Kim, Kihong [Department of Energy Systems Research, Ajou University, Suwon 443-749 (Korea, Republic of)] [Department of Energy Systems Research, Ajou University, Suwon 443-749 (Korea, Republic of)

2013-12-15T23:59:59.000Z

324

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

E-Print Network [OSTI]

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

325

Non-adiabatic quantum pumping by a randomly moving quantum dot  

E-Print Network [OSTI]

We look at random time dependent fluctuations of the electrical charge in an open 1D quantum system represented by a quantum dot experiencing random lateral motion. In essentially non-adiabatic settings we study both diffusive and ballistic (Levy) regimes of the barrier motion. Here the electric current as well as the net pumped electric charge experience random fluctuations over the static background. We show that in the large-time limit $t \\to \\infty$ the wavefunction is naturally separated into the Berry-phase component (resulting from the singular part of the wave amplitude in the co-moving frame) and the non-adiabatic correction (arising from fast oscillating, slow decaying tails of the same amplitude). In the special limit of a delta-correlated continuous Gaussian random walk we obtain closed analytical expressions for the ensemble averaged amplitude in the co-moving frame and demonstrate that the main contribution to the average wavefunction and probability current comes from the Berry-phase component which leads to the saturation of the fluctuations of the electric current and the pumped charge. We also derive the exact expressions for the average propagator (in the co-moving basis representation) for both types of motion.

Stanislav Derevyanko; Daniel Waltner

2015-02-10T23:59:59.000Z

326

Time Brightness  

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

Perlmutter, et al., in Thermonuclear Supernovae, NATO ASI, v. 486 (1997) Perlmutter, et al., in Thermonuclear Supernovae, NATO ASI, v. 486 (1997) Cosmology from . . . Time Brightness ... . . . 50-100 Fields Lunar Calendar Scheduled Follow-Up Imaging at Hubble, Cerro Tololo, WIYN, Isaac Newton Scheduled Follow-Up Spectroscopy at Keck Almost 1000 Galaxies per Field RESULT: ~24 Type Ia supernovae discovered while still brightening, at new moon Berkeley Lab Keck WIYN Cerro Tololo Isaac Newton Hubble Strategy We developed a strategy to guarantee a group of supernova discoveries on a certain date. Just after a new moon, we observe some 50 to 100 high-galactic lattitute fields-each containing almost a thousand high-redshift galaxies-in two nights on the Cerro Tololo 4-meter telescope with Tyson & Bernstein's wide-field camera. We return three weeks later to observe the same

327

Random unitary maps for quantum state reconstruction  

SciTech Connect (OSTI)

We study the possibility of performing quantum state reconstruction from a measurement record that is obtained as a sequence of expectation values of a Hermitian operator evolving under repeated application of a single random unitary map, U{sub 0}. We show that while this single-parameter orbit in operator space is not informationally complete, it can be used to yield surprisingly high-fidelity reconstruction. For a d-dimensional Hilbert space with the initial observable in su(d), the measurement record lacks information about a matrix subspace of dimension {>=}d-2 out of the total dimension d{sup 2}-1. We determine the conditions on U{sub 0} such that the bound is saturated, and show they are achieved by almost all pseudorandom unitary matrices. When we further impose the constraint that the physical density matrix must be positive, we obtain even higher fidelity than that predicted from the missing subspace. With prior knowledge that the state is pure, the reconstruction will be perfect (in the limit of vanishing noise) and for arbitrary mixed states, the fidelity is over 0.96, even for small d, and reaching F>0.99 for d>9. We also study the implementation of this protocol based on the relationship between random matrices and quantum chaos. We show that the Floquet operator of the quantum kicked top provides a means of generating the required type of measurement record, with implications on the relationship between quantum chaos and information gain.

Merkel, Seth T. [Institute for Quantum Computing, Waterloo, Ontario N2L 3G1 (Canada); Riofrio, Carlos A.; Deutsch, Ivan H. [Center for Quantum Information and Control (CQuIC), Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico, 87131 (United States); Flammia, Steven T. [Perimeter Institute for Theoretical Physics, Waterloo, Ontario N2L 2Y5 (Canada); Kavli Institute for Theoretical Physics, University of California, Santa Barbara, California 93106 (United States)

2010-03-15T23:59:59.000Z

328

Multidimensional Random Polymers : A Renewal Approach  

E-Print Network [OSTI]

In these lecture notes, which are based on the mini-course given at 2013 Prague School on Mathematical Statistical Physics, we discuss ballistic phase of quenched and annealed stretched polymers in random environment on ${\\mathbb Z}^d$ with an emphasis on the natural renormalized renewal structures which appear in such models. In the ballistic regime an irreducible decomposition of typical polymers leads to an effectiverandom walk reinterpretation of the latter. In the annealed casethe Ornstein-Zernike theory based on this approach paves the way to an essentially complete control on the level of local limit results and invariance principles. In the quenched case, the renewal structure maps the model of stretched polymers into an effective model of directed polymers. As a result one is able to use techniques and ideas developed in the context of directed polymers in order to address issues like strong disorder in low dimensions and weak disorder in higher dimensions. Among the topics addressed: Thermodynamics of quenched and annealed models, multi-dimensional renewal theory (under Cramer's condition), renormalization and effective random walk structure of annealed polymers, very weak disorder in dimensions $d\\geq 4$ and strong disorder in dimensions $d=1,2$.

Dmitry Ioffe

2014-11-30T23:59:59.000Z

329

VOLUME 54, NUMBER 11 PHYSICAL REVIEW LETTERS 18 MARCH 1985 Novel Superuniversal Behavior of a Random-Walk  

E-Print Network [OSTI]

, W. HOFM ANN, J. E. HUTH, J. HYLEN, T. KAMAE, H. S. KAYE, R. W. KENNEY, L. T. KERTH, R. I. KODA, R. R. EBERHARD, D. L. FANCHER, H. FUJII, T. FUJII, B. GABIOUD, J. W. GARY, W. GORN, N. J. HADLEY, J. M. HAUPTMAN. MADARAS, K. MARUYAMA, J. N. MARX, J. A. J. MATTHEWS, S. O. MELNIKOFF, W. MOSES, P. NEMETHY, D. R. NYGREN

Stanley, H. Eugene

330

A Low Mach Number Model for Moist Atmospheric Flows  

E-Print Network [OSTI]

We introduce a low Mach number model for moist atmospheric flows that accurately incorporates reversible moist processes in flows whose features of interest occur on advective rather than acoustic time scales. Total water is used as a prognostic variable, so that water vapor and liquid water are diagnostically recovered as needed from an exact Clausius--Clapeyron formula for moist thermodynamics. Unlike the pseudo--incompressible formulation, this model allows a general equation of state. Low Mach number models can be computationally more efficient than a fully compressible model, but the low Mach number formulation introduces additional mathematical and computational complexity because of the divergence constraint imposed on the velocity field. Here, latent heat release is accounted for in the source term of the constraint by estimating the rate of phase change based on the time variation of saturated water vapor subject to the thermodynamic equilibrium constraint. We numerically assess the validity of the l...

Duarte, Max; Bell, John B

2014-01-01T23:59:59.000Z

331

Intercommutation of Z-boson string loops violates baryon number  

Science Journals Connector (OSTI)

We show that delinking of Z-boson string loops changes the helicity and thus violates baryon number. The key point is that an unlinked vortex loop cannot be twisted. The helicity of an eventual magnetic twist when averaged in time is zero.

Jacek Dziarmaga

1995-07-15T23:59:59.000Z

332

Unsteady Aerodynamic Models for Agile Flight at Low Reynolds Numbers  

E-Print Network [OSTI]

-time Lyapunov exponent fields, which highlight separated flows and wake structures. A new fast method of a two-dimensional flat plate airfoil in motion at low Reynolds number, Re = 100, and in a wind tunnel of computing these fields is presented. In addition, we generalize the immersed boundary projec- tion method

Rowley, Clarence W.

333

NUMBER: BUSF 7.00 SECTION: Business and Finance  

E-Print Network [OSTI]

NUMBER: BUSF 7.00 SECTION: Business and Finance SUBJECT: Purchasing DATE: November 1, 2006 Policy. Purchases from $2,501.00 to $10,000.00 require a minimum of three (3) to ten (10) days processing time,000.00 require an additional ten (10) day Intent to Award Period before a purchase order can be issued. Please

Almor, Amit

334

Solving for the Particle-Number-Projected HFB Wavefunction  

E-Print Network [OSTI]

Recently we proposed a particle-number-conserving theory for nuclear pairing [Jia, Phys. Rev. C 88, 044303 (2013)] through the generalized density matrix formalism. The relevant equations were solved for the case when each single-particle level has a distinct set of quantum numbers and could only pair with its time-reversed partner (BCS-type Hamiltonian). In this work we consider the more general situation when several single-particle levels could have the same set of quantum numbers and pairing among these levels is allowed (HFB-type Hamiltonian). The pair condensate wavefunction (the HFB wavefunction projected onto good particle number) is determined by the equations of motion for density matrix operators instead of the variation principle. The theory is tested in the simple two-level model with factorizable pairing interactions and the semi-realistic model with the zero-range delta interaction.

Jia, L Y

2015-01-01T23:59:59.000Z

335

A pragmatic approach to temporary payment card numbers  

Science Journals Connector (OSTI)

With the push towards electronic payments that use a smart card and authenticate the cardholder by his or her personal identification number, much fraud has switched to the residual payment methods that just rely on knowing the card number: card-not-present transactions. There are various countermeasures; notably some issuers allocate temporary card numbers (TCNs). The snag is that this is an online solution that requires the cardholder to be identified and authenticated over a separate and direct link between the cardholder and card issuer each time a number is allocated. Some off-line mechanisms have been proposed but those TCNs do not act as the cardholder's identifier. This paper examines a sample of online and off-line TCN mechanisms and then proposes an off-line mechanism that gives a comparable service to the online mechanisms. The cardholder's privacy is protected whilst still allowing proof of payment.

David J. Boyd

2009-01-01T23:59:59.000Z

336

Prime number generation and factor elimination  

E-Print Network [OSTI]

We have presented a multivariate polynomial function termed as factor elimination function,by which, we can generate prime numbers. This function's mapping behavior can explain the irregularities in the occurrence of prime numbers on the number line. Generally the different categories of prime numbers found till date, satisfy the form of this function. We present some absolute and probabilistic conditions for the primality of the number generated by this method. This function is capable of leading to highly efficient algorithms for generating prime numbers.

Vineet Kumar

2014-10-06T23:59:59.000Z

337

Computing the First Few Betti Numbers of Semi-algebraic Sets in Single Exponential  

E-Print Network [OSTI]

Computing the First Few Betti Numbers of Semi-algebraic Sets in Single Exponential Time Saugata For every fixed > 0, we describe a singly exponential algorithm for computing the first Betti number for computing the Euler-Poincar´e characteristic, the zero-th and the first Betti numbers. Key words: Semi

Basu, Saugata

338

COMPUTING THE TOP BETTI NUMBERS OF SEMI-ALGEBRAIC SETS DEFINED BY QUADRATIC  

E-Print Network [OSTI]

COMPUTING THE TOP BETTI NUMBERS OF SEMI-ALGEBRAIC SETS DEFINED BY QUADRATIC INEQUALITIES the top Betti numbers of S, bk-1(S), . . . , bk- (S), in polynomial time. The complexity of the algorithm for computing all the Betti numbers of S whose complexity is k2O(s) . 1. Introduction Let R be a real closed

Basu, Saugata

339

,"New York Number of Natural Gas Consumers"  

U.S. Energy Information Administration (EIA) Indexed Site

1: Residential" "Sourcekey","NA1501SNY8","NA1508SNY8","NA1509SNY8" "Date","New York Natural Gas Number of Residential Consumers (Count)","New York Natural Gas Number...

340

Volume 167,number 1,2 CHEMICAL PHYSICS LETTERS 16March 1990 OIUENTATIONAL ANISOTROPY OF NUCLEAR SPIN RELAXATION  

E-Print Network [OSTI]

Volume 167,number 1,2 CHEMICAL PHYSICS LETTERS 16March 1990 OIUENTATIONAL ANISOTROPY OF NUCLEAR. In the case of randomly oriented, multilamellar dispersions of phospholipids in the La phase, powder type 2H to fluctuations in the nuclear quadrupolar interaction is given by [5>61 in which e2qQ/h s 2rcx,where x

Brown, Michael F.

Note: This page contains sample records for the topic "random number times" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Growth of Betti Numbers Bryan Clair  

E-Print Network [OSTI]

Growth of Betti Numbers Bryan Clair _____________________________________________________________________________ Introduction Let X = fX= be a finite simplicial complex. We study the growth rate of the Betti numbers of X. It is easy to see that the sequence of Betti numbers {bq(Xi)} can grow at most linearly

Clair, Bryan

342

Computing Betti Numbers via Combinatorial Joel Friedman  

E-Print Network [OSTI]

Computing Betti Numbers via Combinatorial Laplacians Joel Friedman Department of Mathematics 1984 Abstract We use the Laplacian and power method to compute Betti numbers of sim- plicial complexes. This has, involving higher dimensional spaces (see [Cha95]). 1 #12;A part of the homology groups are the Betti numbers

Friedman, Joel

343

Betti Numbers of Graph Sean Jacques  

E-Print Network [OSTI]

ii Betti Numbers of Graph Ideals Sean Jacques Thesis submitted to the University of She but there are formulae for finding the Betti numbers (part of the information which comprises a minimal free resolution especially explicit or useful descriptions of the Betti numbers. However we restrict our attention to those

Katzman, Moty

344

VV--0. Review of Probability0. Review of Probability Random Variable  

E-Print Network [OSTI]

) Temperature at specified time of day 3) Stock Market at close 4) Height of wheel going over a rocky road #12;3/27 Random Variable Non-examples 1) `Heads' or `Tails' on coin 2) Red or Black ball from urn Basic Idea ­ don RV · Die · Stocks Continuous RV · Temperature · Wheel height #12;5/27 Given CRV X, What

Fowler, Mark

345

Associative memory storing an extensive number of patterns based on a network of oscillators with distributed natural frequencies in the presence of external white noise  

Science Journals Connector (OSTI)

We study associative memory based on temporal coding in which successful retrieval is realized as an entrainment in a network of simple phase oscillators with distributed natural frequencies under the influence of white noise. The memory patterns are assumed to be given by uniformly distributed random numbers on [0, 2?) so that the patterns encode the phase differences of the oscillators. To derive the macroscopic order parameter equations for the network with an extensive number of stored patterns, we introduce an effective transfer function by assuming a fixed-point equation of the form of the Thouless-Anderson-Palmer equation, which describes the time-averaged output as a function of the effective time-averaged local field. Properties of the networks associated with synchronization phenomena for a discrete symmetric natural frequency distribution with three frequency components are studied based on the order parameter equations, and are shown to be in good agreement with the results of numerical simulations. Two types of retrieval states are found to occur with respect to the degree of synchronization, when the size of the width of the natural frequency distribution is changed.

Masahiko Yoshioka and Masatoshi Shiino

2000-05-01T23:59:59.000Z

346

Design for an optical random access memory  

Science Journals Connector (OSTI)

Cascadable optically nonlinear arrays of logic devices interconnected with space invariant optical components are proposed for the core memory of a digital computer. Access time to any...

Murdocca, Miles J; Sugla, Binay

1989-01-01T23:59:59.000Z

347

Jordan-algebraic aspects of optimization:randomization  

E-Print Network [OSTI]

Jul 7, 2007 ... Abstract: We describe a version of randomization technique within a general framework of Euclidean Jordan algebras. It is shown how to use ...

Leonid Faybusovich

2007-07-07T23:59:59.000Z

348

Evidence for Non-Random Hydrophobicity Structures in Protein Chains  

E-Print Network [OSTI]

The question of whether proteins originate from random sequences of amino acids is addressed. A statistical analysis is performed in terms of blocked and random walk values formed by binary hydrophobic assignments of the amino acids along the protein chains. Theoretical expectations of these variables from random distributions of hydrophobicities are compared with those obtained from functional proteins. The results, which are based upon proteins in the SWISS-PROT data base, convincingly show that the amino acid sequences in proteins differ from what is expected from random sequences in a statistical significant way. By performing Fourier transforms on the random walks one obtains additional evidence for non-randomness of the distributions. We have also analyzed results from a synthetic model containing only two amino-acid types, hydrophobic and hydrophilic. With reasonable criteria on good folding properties in terms of thermodynamical and kinetic behavior, sequences that fold well are isolated. Performing the same statistical analysis on the sequences that fold well indicates similar deviations from randomness as for the functional proteins. The deviations from randomness can be interpreted as originating from anticorrelations in terms of an Ising spin model for the hydrophobicities. Our results, which differ from previous investigations using other methods, might have impact on how permissive with respect to sequence specificity the protein folding process is -- only sequences with non-random hydrophobicity distributions fold well. Other distributions give rise to energy landscapes with poor folding properties and hence did not survive the evolution.

Anders Irbäck; Carsten Peterson; Frank Potthast

1996-10-15T23:59:59.000Z

349

A fast randomized eigensolver with structured LDL factorization update  

E-Print Network [OSTI]

In this paper, we propose a structured bisection method with adaptive randomized sampling for ... ized sampling, matrix-free HSS construction, inertia/

2014-07-17T23:59:59.000Z

350

Photon number density operator iE^?A^  

Science Journals Connector (OSTI)

A photon number density operator proportional to the dot product of the electric field and the vector potential is introduced as an alternative to the Mandel operator. In the Lorentz gauge it is the time component of the four-vector obtained by contracting the electromagnetic field tensor with the vector potential. Its other components can be interpreted as a current-density vector, and these number and current-density operators satisfy a continuity equation. The photon density operators introduced here are all products of operators that satisfy Maxwell’s equations and whose Lorentz and gauge transformation properties are well known.

M. Hawton and T. Melde

1995-05-01T23:59:59.000Z

351

Development and testing of neutron pulse time stamping data acquisition system for neutron noise experiment  

Science Journals Connector (OSTI)

Abstract Statistical correlation techniques find applications in the analysis of zero power reactor noise and in passive neutron assay (PNA). A large number of apparently different techniques have been in use in these application areas and traditionally the electronics modules used for data acquisition and analysis is specific to the method used. In this paper we describe a data acquisition scheme developed by us, which is independent of the specific analysis method and can therefore be used for all of them. This is a neutron time stamping data acquisition system based on a timer card and an interface software to acquire and store the data in the required format. The system has been successfully tested with two statistically different types of neutron sources, namely a random Poisson source (Pu–Be) and a correlated source (a nuclear reactor).

Rajeev Kumar; M Yakub Ali; S.B. Degweker; S.C. Vishwasrao; R.T. Jadhav

2015-01-01T23:59:59.000Z

352

Alabama Natural Gas Number of Gas and Gas Condensate Wells (Number...  

U.S. Energy Information Administration (EIA) Indexed Site

Gas and Gas Condensate Wells (Number of Elements) Alabama Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

353

Oregon Natural Gas Number of Gas and Gas Condensate Wells (Number...  

Gasoline and Diesel Fuel Update (EIA)

Gas and Gas Condensate Wells (Number of Elements) Oregon Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

354

Montana Natural Gas Number of Gas and Gas Condensate Wells (Number...  

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

Gas and Gas Condensate Wells (Number of Elements) Montana Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

355

Arizona Natural Gas Number of Gas and Gas Condensate Wells (Number...  

U.S. Energy Information Administration (EIA) Indexed Site

Gas and Gas Condensate Wells (Number of Elements) Arizona Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

356

Texas Natural Gas Number of Gas and Gas Condensate Wells (Number...  

U.S. Energy Information Administration (EIA) Indexed Site

Gas and Gas Condensate Wells (Number of Elements) Texas Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

357

Wyoming Natural Gas Number of Gas and Gas Condensate Wells (Number...  

U.S. Energy Information Administration (EIA) Indexed Site

Gas and Gas Condensate Wells (Number of Elements) Wyoming Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

358

U.S. Natural Gas Number of Gas and Gas Condensate Wells (Number...  

U.S. Energy Information Administration (EIA) Indexed Site

Gas and Gas Condensate Wells (Number of Elements) U.S. Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

359

Utah Natural Gas Number of Gas and Gas Condensate Wells (Number...  

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

Gas and Gas Condensate Wells (Number of Elements) Utah Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

360

Alaska Natural Gas Number of Gas and Gas Condensate Wells (Number...  

Gasoline and Diesel Fuel Update (EIA)

Gas and Gas Condensate Wells (Number of Elements) Alaska Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

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


361

Nevada Natural Gas Number of Gas and Gas Condensate Wells (Number...  

U.S. Energy Information Administration (EIA) Indexed Site

Gas and Gas Condensate Wells (Number of Elements) Nevada Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

362

Indiana Natural Gas Number of Gas and Gas Condensate Wells (Number...  

Gasoline and Diesel Fuel Update (EIA)

Gas and Gas Condensate Wells (Number of Elements) Indiana Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

363

Kansas Natural Gas Number of Gas and Gas Condensate Wells (Number...  

U.S. Energy Information Administration (EIA) Indexed Site

Gas and Gas Condensate Wells (Number of Elements) Kansas Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

364

Ohio Natural Gas Number of Gas and Gas Condensate Wells (Number...  

Gasoline and Diesel Fuel Update (EIA)

Gas and Gas Condensate Wells (Number of Elements) Ohio Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

365

A generalized approach to random noise synthesis: Theory and computer simulation  

Science Journals Connector (OSTI)

A generalized approach to the synthesis of Gaussian and non?Gaussian random noises as well as purely impulsive waveforms having a preselected amplitude spectrum has been developed. The basic idea behind the synthesis is to construct the amplitude?time waveform from the frequency domain i.e. from the amplitude and phase spectra. By maintaining a predetermined (reference) amplitude spectrum and performing certain specific manipulations of the phase spectrum within any selected band of frequencies and then applying the inverse discrete Fourier transform (IDFT) peaks in the non?Gaussian random waveform can be constructed from the selected band of frequencies that have been phase manipulated. Entire families of signals can thus be produced having the same energy spectrum but statistical characteristics that vary along the continuum from Gaussian (skewness=0 and kurtosis=3) through non?Gaussian (variable skewness kurtosis and crest factor) to purely impulsive (shock/transient) signals. The theoretical background and the results of a series of numerical simulations will be presented which demonstrate the functional relation between various phase spectrum manipulations and the descriptors of the synthesized random noise. The results show that the approach is viable and that the synthesized random waveforms can be easily tailored to simulate a variety of real?world acoustic/vibration signals e.g. high kurtosis (impulsive) industrial noises helicopter noises missile vibrational signals etc.

Keng D. Hsueh; Roger P. Hamernik

1990-01-01T23:59:59.000Z

366

Terrain Classification With Conditional Random Fields  

E-Print Network [OSTI]

robot Thorin equipped with a Mini-ITX computer #12;The Four Considered Terrain Types 4Stefan LaibleStefan Laible, Yasir Niaz Khan and Andreas Zell · Grid-based approach [Khan et al. 2011] · Divide image into equally-sized grid cells · Classify each grid cell individually #12;· Thresholding yields a number in [0

Berns, Karsten

367

Random Polynomials and the Friendly Landscape  

E-Print Network [OSTI]

In hep-th/0501082, a field theoretic ``toy model'' for the Landscape was proposed. We show that the considerations of that paper carry through to realistic effective Lagrangians, such as those that emerge out of string theory. Extracting the physics of the large number of metastable vacua that ensue requires somewhat more sophisticated algebro-geometric techniques, which we review.

Jacques Distler; Uday Varadarajan

2005-07-08T23:59:59.000Z

368

Are denatured proteins ever random coils?  

Science Journals Connector (OSTI)

...exponential function. The study by Pappu et al. shows that the number of states...will require more studies like that of Pappu et al. and doubtless will require an...Macromolecules 9 : 41 – 47 , 1249990 . 4 Pappu R V Srinivasan R Rose G D ( 2000 ) Proc Natl Acad...

Robert L. Baldwin; Bruno H. Zimm

2000-01-01T23:59:59.000Z

369

Spin transitions in time-dependent regular and random magnetic fields  

E-Print Network [OSTI]

,13 originate from the quantum interfer- ence of different Feynman paths leading from m to m8, which does not exist in the genuine LZ problem.14 Thus, the cubic nanomagnets are simple, but nontrivial physical ob- jects. The quantum tunneling...b2A3a2b* ~3uau222A3ab*2 2~3uau221 2b*3 A3a*b* We present only a quarter of the transition matrix for S52 properties. U25S a4 A4a3b A~4uau223 !a2 A6~26uau4 The physical reason of these oscillations is the interference between different Feynman...

Pokrovsky, Valery L.; Sinitsyn, NA.

2004-01-01T23:59:59.000Z

370

PHYSICAL REVIEW E 88, 062110 (2013) Evanescent continuous-time random walks  

E-Print Network [OSTI]

, it is the average of this quantity over an ensemble of walkers, which we will denote by Sn, that has been most of motor proteins from their polymer tracks [12], and stochastically moving preys hunted by a collection occurs in crowded or disordered media, as a result of which anomalous diffusion is very often

Lindenberg, Katja

371

Flow Intermittency, Dispersion, and Correlated Continuous Time Random Walks in Porous Media  

E-Print Network [OSTI]

We study the intermittency of fluid velocities in porous media and its relation to anomalous dispersion. Lagrangian velocities measured at equidistant points along streamlines are shown to form a spatial Markov process. ...

de Anna, Pietro

372

An overview of time?reversal acoustics  

Science Journals Connector (OSTI)

Time?reversal invariance is a very powerful concept in physics. In the field of acoustics where time reversal invariance occurs time?reversal experiments may be achieved simply with arrays of transmit?receive transducers allowing an incident wave field to be sampled recorded time?reversed and re?emitted. Time reversal mirrors (TRMs) may be used to study random media and chaotic reverberating structures. Common to these complex media is a remarkable robustness exemplified by observations that the more complex the medium between the probe source and the TRM the sharper the focus. TRMs open the way to new signal processings that interest imaging detection telecommunications and therapy. Time reversal mirrors have plenty of applications including ultrasonic therapy and medical imaging non destructive testing telecommunications underwater acoustics seismology sound control home automation. An overview of these fields will be presented.

Mathias Fink

2008-01-01T23:59:59.000Z

373

Fluid flow and heat transfer across an elliptical hollow fiber membrane tube bank with randomly distributed features  

Science Journals Connector (OSTI)

Abstract An elliptical hollow fiber membrane tube bank (EHFMTB) has better performances while being employed for air humidification. The EHFMTB is populated in a plastic shell to form a shell-and-tube heat exchanger like membrane contactor. The tube bank is always randomly populated in practical applications because of convenience and randomness in the manufacturing process. The fluid flow and heat transfer across a randomly distributed elliptical hollow fiber membrane tube bank (REHFMTB) are investigated. To disclose the influences of the fiber arrangements on the performances, three unit cells containing 20 fibers with different randomly distributions are selected as the calculating domains. A renormalization group k–? (RNG KE) turbulence model with enhanced wall treatment is used for solving the equations governing the momentum and heat transports. The friction factor and Nusselt number across the REHFMTB under various fiber distributions, Reynolds numbers (Re), packing fractions (?) and elliptical semiaxis ratios (b/a) are numerically obtained and experimentally validated. It is found that the comprehensive heat transfer performance is deteriorated for the fluid flow across the REHFMTB.

Runhua Jiang; Minlin Yang; Sheng Chen; Si-Min Huang; Xiaoxi Yang

2014-01-01T23:59:59.000Z

374

Ising models on power-law random graphs Sander Dommers  

E-Print Network [OSTI]

Ising models on power-law random graphs Sander Dommers Cristian Giardin`a Remco van der Hofstad May 25, 2010 Abstract We study a ferromagnetic Ising model on random graphs with a power-law degree Introduction and results In this article we study the behavior of the Ising model on complex networks

Hofstad, Remco van der

375

Dense Fast Random Projections and Lean Walsh Edo Liberty ,  

E-Print Network [OSTI]

Dense Fast Random Projections and Lean Walsh Transforms Edo Liberty , , Nir Ailon , and Amit Singer , Abstract. Random projection methods give distributions over k Ã? d matrices such that if a matrix (chosen Projections, Lean Walsh Transforms, Johnson Lin- denstrauss, Dimension reduction. 1 Introduction

Singer, Amit

376

LARGE DEVIATIONS FOR THE BOUSSINESQ EQUATIONS UNDER RANDOM INFLUENCES  

E-Print Network [OSTI]

LARGE DEVIATIONS FOR THE BOUSSINESQ EQUATIONS UNDER RANDOM INFLUENCES JINQIAO DUAN AND ANNIE MILLET Abstract. A Boussinesq model for the B´enard convection under random influ- ences is considered as a system. These coupled equations (often with the Boussinesq approximation) model a variety of phe- nomena

Paris-Sud XI, Université de

377

Surviving particles for subcritical branching processes in random environment  

E-Print Network [OSTI]

Surviving particles for subcritical branching processes in random environment Vincent Bansaye December 9, 2008 Abstract The asymptotic behavior of a subcritical Branching Process in Random Envi- ronment (BPRE) starting with several particles depends on whether the BPRE is strongly subcritical (SS

Paris-Sud XI, Université de

378

Fluctuation theory of connectivities for subcritical random cluster models  

E-Print Network [OSTI]

Fluctuation theory of connectivities for subcritical random cluster models Massimo Campanino subcritical regime; the latter is known to be true, in any dimensions, when q = 1, q = 2, and when q. Campanino et al./Connectivities of subcritical random cluster models 2 variance principle, Ruelle operator

379

Geometric aspects of scaling limits of random planar maps  

E-Print Network [OSTI]

Geometric aspects of scaling limits of random planar maps G. Miermont Fondation des Sciences of random planar maps CCF'08 1 / 18 #12;Planar maps Definition A planar map is a proper embedding of the sphere. One is interested in the properties of various families of maps. Familiar ones are triangulations

Miermont, Grégory

380

Explanation of the Random Lengths Framing Lumber Composite Price  

E-Print Network [OSTI]

Explanation of the Random Lengths Framing Lumber Composite Price May 10, 2006 The Random Lengths Framing Lumber Composite is a broad measure of price behavior in the U.S. framing lumber market) Western U.S., 2) Southern U.S., and 3) Canada. Thus, 33% of the Composite is comprised of Southern Pine

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


381

RANDOMNESS IN PROOF COMPLEXITY Joshua Buresh-Oppenheim  

E-Print Network [OSTI]

RANDOMNESS IN PROOF COMPLEXITY by Joshua Buresh-Oppenheim A thesis submitted in conformity of Toronto Copyright c 2005 by Joshua Buresh-Oppenheim #12;Abstract Randomness in Proof Complexity Joshua Buresh-Oppenheim Doctor of Philosophy Graduate Department of Computer Science University of Toronto 2005

Penn, Gerald

382

Partition Testing versus Random Testing: the Influence of Uncertainty  

E-Print Network [OSTI]

Partition Testing versus Random Testing: the Influence of Uncertainty Walter J. Gutjahr Department of Statistics, O.R. and Computer Science University of Vienna Abstract --- The paper compares partition testing and random testing on the assumption that program failure rates are not known with certainty before testing

Gutjahr, Walter

383

ON RANDOM VARIATE GENERATION FOR THE GENERALIZED HYPERBOLIC SECANT DISTRIBUTIONS  

E-Print Network [OSTI]

ON RANDOM VARIATE GENERATION FOR THE GENERALIZED HYPERBOLIC SECANT DISTRIBUTIONS Luc Devroye School distribution. Finally, we give a generator for the nef--ghs distribution. There are, of course, two things we of Computer Science McGill University Abstract. We give random variate generators for the generalized

Devroye, Luc

384

Title of dissertation: OPTOELECTRONIC EXPERIMENTS ON RANDOM BIT GENERATORS AND  

E-Print Network [OSTI]

ABSTRACT Title of dissertation: OPTOELECTRONIC EXPERIMENTS ON RANDOM BIT GENERATORS AND COUPLED: Professor Rajarshi Roy Department of Physics Optoelectronic systems have many important applications and optoelectronic systems have been of interest for two newer purposes: generators of random bits and experimental

Murphy, Thomas E.

385

Random Access Compressed Sensing over Fading and Noisy Communication Channels  

E-Print Network [OSTI]

of the climate change. Such applications require the least control and intervention as well as minimum energy1 Random Access Compressed Sensing over Fading and Noisy Communication Channels Fatemeh Fazel on integrating random sensing with the communication architecture, and achieves overall efficiency in terms

Stojanovic, Milica

386

AUTOMATED LOGIC SYNTHESIS OF RANDOM PATTERN TESTABLE CIRCUITS  

E-Print Network [OSTI]

AUTOMATED LOGIC SYNTHESIS OF RANDOM PATTERN TESTABLE CIRCUITS Nur A. Touba and Edward J. Mc during logic synthesis. An automated logic synthesis procedure is described which takes as an input a two. The approach taken in this paper is to consider random pattern testability during logic synthesis. An automated

Touba, Nur A.

387

Extremal Properties of Random Structures E. Ben-Naim1  

E-Print Network [OSTI]

Extremal Properties of Random Structures E. Ben-Naim1 , P. L. Krapivsky2 , and S. Redner2 1. The extremal characteristics of random structures, including trees, graphs, and networks, are discussed. A statistical physics approach is employed in which extremal properties are obtained through suitably defined

Redner, Sidney

388

Random Generation of Deterministic Acyclic Automata Using Markov Chains  

E-Print Network [OSTI]

Random Generation of Deterministic Acyclic Automata Using Markov Chains Vincent Carnino and Sven De@etudiant.univ-mlv.fr,defelic@univ-mlv.fr Abstract. In this article we propose an algorithm, based on Markov chain techniques, to generate random to generate minimal acyclic automata with n states almost uniformly. 1 Introduction In language theory

Paris-Sud XI, Université de

389

GENERATION AND RANDOM GENERATION: FROM SIMPLE GROUPS TO MAXIMAL SUBGROUPS  

E-Print Network [OSTI]

GENERATION AND RANDOM GENERATION: FROM SIMPLE GROUPS TO MAXIMAL SUBGROUPS TIMOTHY C. BURNESS of generators for G. It is well known that d(G) = 2 for all (non-abelian) finite simple groups. We prove that d investigate the random generation of maximal subgroups of simple and almost simple groups. By applying

Burness, Tim

390

Equilibrium ultrastable glasses produced by random pinning  

E-Print Network [OSTI]

Ultrastable glasses have risen to prominence due to their potentially useful material properties and the tantalizing possibility of a general method of preparation via vapor deposition. Despite the importance of this novel class of amorphous materials, numerical studies have been scarce because achieving ultrastability in atomistic simulations is an enormous challenge. Here we bypass this difficulty and establish that randomly pinning the position of a small fraction of particles inside an equilibrated supercooled liquid generates ultrastable configurations at essentially no numerical cost, while avoiding undesired structural changes due to the preparation protocol. Building on the analogy with vapor-deposited ultrastable glasses, we study the melting kinetics of these configurations following a sudden temperature jump into the liquid phase. In homogeneous geometries, we find that enhanced kinetic stability is accompanied by large scale dynamic heterogeneity, while a competition between homogeneous and heterogeneous melting is observed when a liquid boundary invades the glass at constant velocity. Our work demonstrates the feasibility of large-scale, atomistically resolved, and experimentally relevant simulations of the kinetics of ultrastable glasses.

Glen M Hocky; Ludovic Berthier; David R. Reichman

2014-09-23T23:59:59.000Z

391

Random matrix description of decaying quantum systems  

E-Print Network [OSTI]

This contribution describes a statistical model for decaying quantum systems (e.g. photo-dissociation or -ionization). It takes the interference between direct and indirect decay processes explicitely into account. The resulting expressions for the partial decay amplitudes and the corresponding cross sections may be considered a many-channel many-resonance generalization of Fano's original work on resonance lineshapes [Phys. Rev 124, 1866 (1961)]. A statistical (random matrix) model is then introduced. It allows to describe chaotic scattering systems with tunable couplings to the decay channels. We focus on the autocorrelation function of the total (photo) cross section, and we find that it depends on the same combination of parameters, as the Fano-parameter distribution. These combinations are statistical variants of the one-channel Fano parameter. It is thus possible to study Fano interference (i.e. the interference between direct and indirect decay paths) on the basis of the autocorrelation function, and thereby in the regime of overlapping resonances. It allows us, to study the Fano interference in the limit of strongly overlapping resonances, where we find a persisting effect on the level of the weak localization correction.

T. Gorin

2005-10-04T23:59:59.000Z

392

Nonlinear Lattice Waves in Random Potentials  

E-Print Network [OSTI]

Localization of waves by disorder is a fundamental physical problem encompassing a diverse spectrum of theoretical, experimental and numerical studies in the context of metal-insulator transition, quantum Hall effect, light propagation in photonic crystals, and dynamics of ultra-cold atoms in optical arrays. Large intensity light can induce nonlinear response, ultracold atomic gases can be tuned into an interacting regime, which leads again to nonlinear wave equations on a mean field level. The interplay between disorder and nonlinearity, their localizing and delocalizing effects is currently an intriguing and challenging issue in the field. We will discuss recent advances in the dynamics of nonlinear lattice waves in random potentials. In the absence of nonlinear terms in the wave equations, Anderson localization is leading to a halt of wave packet spreading. Nonlinearity couples localized eigenstates and, potentially, enables spreading and destruction of Anderson localization due to nonintegrability, chaos and decoherence. The spreading process is characterized by universal subdiffusive laws due to nonlinear diffusion. We review extensive computational studies for one- and two-dimensional systems with tunable nonlinearity power. We also briefly discuss extensions to other cases where the linear wave equation features localization: Aubry-Andre localization with quasiperiodic potentials, Wannier-Stark localization with dc fields, and dynamical localization in momentum space with kicked rotors.

Sergej Flach

2014-09-10T23:59:59.000Z

393

Conditional preparation of states containing a definite number of photons  

E-Print Network [OSTI]

A technique for conditionally creating single- or multimode photon-number states is analyzed using Bayesian theory. We consider the heralded N-photon states created from the photons produced by an unseeded optical parametric amplifier when the heralding detector is the time-multiplexed photon-number-resolving detector recently demonstrated by Fitch, et al. [Phys. Rev. A 68, 043814 (2003).] and simultaneously by Achilles, et al. [Opt. Lett. 28, 2387 (2003).]. We find that even with significant loss in the heralding detector, fields with sub-Poissonian photon-number distributions can be created. We also show that heralded multimode fields created using this technique are more robust against detector loss than are single-mode fields.

Malcolm N. O'Sullivan; Kam Wai Clifford Chan; Vasudevan Lakshminarayanan; Robert W. Boyd

2007-09-28T23:59:59.000Z

394

Computing the Betti Numbers of Arrangements  

E-Print Network [OSTI]

1 Computing the Betti Numbers of Arrangements Saugata Basu School of Mathematics & College complexity of a set S are the Betti numbers. i(S). · i(S) is the rank of the Hi (S) (the i-th co. · An important measure of the topological complexity of a set S are the Betti numbers. i(S). · i(S) is the rank

Basu, Saugata

395

BETTI NUMBERS OF HYPERSURFACE COMPLEMENTS LAURENTIU MAXIM  

E-Print Network [OSTI]

L2 ­BETTI NUMBERS OF HYPERSURFACE COMPLEMENTS LAURENTIU MAXIM Abstract. In [DJL07] it was shown that if A is an affine hyperplane arrange- ment in Cn, then at most one of the L2­Betti numbers b (2) i (Cn \\ A, id of [FLM09, LM06] about L2­Betti numbers of plane curve complements. 1. Introduction Let M be any

Maxim, Laurentiu-George

396

REFINED BOUNDS ON THE NUMBER OF CONNECTED ...  

E-Print Network [OSTI]

Apr 6, 2011 ... Smith inequality (see Theorem 2.5) a bound on the number of semi- ... then using Smith inequality, have been used before in several different ...

2011-04-06T23:59:59.000Z

397

Random-matrix theory and complex atomic spectra  

E-Print Network [OSTI]

Around 1950, Wigner introduced the idea of modelling physical reality with an ensemble of random matrices while studying the energy levels of heavy atomic nuclei. Since then, the field of random-matrix theory has grown tremendously, with applications ranging from fluctuations on the economic markets to complex atomic spectra. The purpose of this short article is to review several attempts to apply the basic concepts of random-matrix theory to the structure and radiative transitions of atoms and ions, using the random matrices originally introduced by Wigner in the framework of the gaussian orthogonal ensemble. Some intrinsic properties of complex-atom physics, which could be enlightened by random-matrix theory, are presented.

Pain, Jean-Christophe

2012-01-01T23:59:59.000Z

398

Randomized Algorithms and Lower Bounds for Quantum Simulation  

E-Print Network [OSTI]

We consider deterministic and {\\em randomized} quantum algorithms simulating $e^{-iHt}$ by a product of unitary operators $e^{-iA_jt_j}$, $j=1,...,N$, where $A_j\\in\\{H_1,...,H_m\\}$, $H=\\sum_{i=1}^m H_i$ and $t_j > 0$ for every $j$. Randomized algorithms are algorithms approximating the final state of the system by a mixed quantum state. First, we provide a scheme to bound the trace distance of the final quantum states of randomized algorithms. Then, we show some randomized algorithms, which have the same efficiency as certain deterministic algorithms, but are less complicated than their opponentes. Moreover, we prove that both deterministic and randomized algorithms simulating $e^{-iHt}$ with error $\\e$ at least have $\\Omega(t^{3/2}\\e^{-1/2})$ exponentials.

Chi Zhang

2009-10-21T23:59:59.000Z

399

Time and event triggered communication scheduling for automotive applications  

E-Print Network [OSTI]

automotive electronics applications by a number of European car and heavy truck manufacturers systems within automotive electronics applications by a number of European car and heavy truckTime and event triggered communication scheduling for automotive applications ROGER JOHANSSON

Johansson, Roger

400

Company number 5857955 Wellcome Trust Finance plc  

E-Print Network [OSTI]

Company number 5857955 Wellcome Trust Finance plc Annual Report and Financial Statements Year ended 30 September 2013 #12;Company number 5857955 Wellcome Trust Finance plc Contents Page Directors Trust Finance plc Directors' Report For the year ended 30 September 2013 Report of the Directors

Rambaut, Andrew

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


401

Company number 5857955 Wellcome Trust Finance plc  

E-Print Network [OSTI]

Company number 5857955 Wellcome Trust Finance plc Annual Report and Financial Statements Year ended 30 September 2012 #12;Company number 5857955 Wellcome Trust Finance plc Contents Page Directors Trust Finance plc Directors' Report for the year ended 30 September 2012 Report of the Directors

Rambaut, Andrew

402

GENERAL CHEMISTRY TEXTBOOK LIST ISBN Number  

E-Print Network [OSTI]

FALL 2013 GENERAL CHEMISTRY TEXTBOOK LIST Course Number ISBN Number Title of Text and/or Material Edition Author Publishers 11100 978-1-2591-9687-4 Introduction to Chemistry, 3rd ed. (packaged w 978-1-2591-6192-6 Chemistry, The Molecular Nature of Matter and Change, 6e (packaged w

Jiang, Wen

403

Compare Activities by Number of Computers  

U.S. Energy Information Administration (EIA) Indexed Site

Number of Computers Number of Computers Compare Activities by ... Number of Computers Office buildings contained the most computers per square foot, followed by education and outpatient health care buildings. Education buildings were the only type with more than one computer per employee. Religious worship and food sales buildings had the fewest computers per square foot. Percent of All Computers by Building Type Figure showing percent of all computers by building type. If you need assistance viewing this page, please call 202-586-8800. Computer Data by Building Type Number of Buildings (thousand) Total Floorspace (million square feet) Number of Employees (thousand) Total Computers (thousand) Computers per Million Square Feet Computers per Thousand Employees All Buildings 4,657

404

The potential energy of biased random walks on trees Yueyun Hu and Zhan Shi  

E-Print Network [OSTI]

The potential energy of biased random walks on trees by Yueyun Hu and Zhan Shi Universit´e Paris­Watson tree, branching random walk, slow movement, random walk in a random environment, potential energy. 2010 XIII & Universit´e Paris VI Summary. Biased random walks on supercritical Galton­Watson trees

Paris-Sud XI, Université de

405

Seed size strongly affects cascades on random networks  

Science Journals Connector (OSTI)

The average avalanche size in the Watts model of threshold dynamics on random networks of arbitrary degree distribution is determined analytically. Existence criteria for global cascades are shown to depend sensitively on the size of the initial seed disturbance. The dependence of cascade size upon the mean degree z of the network is known to exhibit several transitions—these are typically continuous at low z and discontinuous at high z; here it is demonstrated that the low-z transition may in fact be discontinuous in certain parameter regimes. Connections between these results and the zero-temperature random-field Ising model on random graphs are discussed.

James P. Gleeson and Diarmuid J. Cahalane

2007-05-03T23:59:59.000Z

406

Multicanonical sampling of rare events in random matrices  

SciTech Connect (OSTI)

A method based on multicanonical Monte Carlo is applied to the calculation of large deviations in the largest eigenvalue of random matrices. The method is successfully tested with the Gaussian orthogonal ensemble, sparse random matrices, and matrices whose components are subject to uniform density. Specifically, the probability that all eigenvalues of a matrix are negative is estimated in these cases down to the values of {approx}10{sup -200}, a region where simple random sampling is ineffective. The method can be applied to any ensemble of matrices and used for sampling rare events characterized by any statistics.

Saito, Nen; Iba, Yukito; Hukushima, Koji [Graduate School of Science and Cybermedia Center, Osaka University, Toyonaka, Osaka 560-0043 (Japan); Institute of Statistical Mathematics, 10-3 Midorimachi, Tachikawa, Tokyo 190-8562 (Japan); Department of Basic Science, University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902 (Japan)

2010-09-15T23:59:59.000Z

407

Stockpile Stewardship Quarterly Volume 1, Number 4  

National Nuclear Security Administration (NNSA)

1, Number 4 * February 2012 1, Number 4 * February 2012 Message from the Assistant Deputy Administrator for Stockpile Stewardship, Chris Deeney Defense Programs Stockpile Stewardship in Action Volume 1, Number 4 Inside this Issue 2 Applying Advanced Simulation Models to Neutron Tube Ion Extraction 3 Advanced Optical Cavities for Subcritical and Hydrodynamic Experiments 5 Progress Toward Ignition on the National Ignition Facility 7 Commissioning URSA Minor: The First LTD-Based Accelerator for Radiography 8 Publication Highlights 9 2011 NNSA Stewardship Science Graduate Fellowship Class S tockpile Stewardship Science is not for wimps, and

408

Rejection of randomly coinciding events in ZnMoO$_4$ scintillating bolometers  

E-Print Network [OSTI]

Random coincidence of events (particularly from two neutrino double beta decay) could be one of the main sources of background in the search for neutrinoless double beta decay with cryogenic bolometers due to their poor time resolution. Pulse-shape discrimination by using front edge analysis, mean-time and $\\chi^2$ methods was applied to discriminate randomly coinciding events in ZnMoO$_4$ cryogenic scintillating bolometers. These events can be effectively rejected at the level of 99% by the analysis of the heat signals with rise-time of about 14 ms and signal-to-noise ratio of 900, and at the level of 92% by the analysis of the light signals with rise-time of about 3 ms and signal-to-noise ratio of 30, under the requirement to detect 95% of single events. These rejection efficiencies are compatible with extremely low background levels in the region of interest of neutrinoless double beta decay of $^{100}$Mo for enriched ZnMoO$_4$ detectors, of the order of $10^{-4}$ counts/(y keV kg). Pulse-shape parameters have been chosen on the basis of the performance of a real massive ZnMoO$_4$ scintillating bolometer. Importance of the signal-to-noise ratio, correct finding of the signal start and choice of an appropriate sampling frequency are discussed.

D. M. Chernyak; F. A. Danevich; A. Giuliani; M. Mancuso; C. Nones; E. Olivieri; M. Tenconi; V. I. Tretyak

2014-04-04T23:59:59.000Z

409

Rejection of randomly coinciding events in ZnMoO$_4$ scintillating bolometers  

E-Print Network [OSTI]

Random coincidence of events (particularly from two neutrino double beta decay) could be one of the main sources of background in the search for neutrinoless double beta decay with cryogenic bolometers due to their poor time resolution. Pulse-shape discrimination by using front edge analysis, mean-time and $\\chi^2$ methods was applied to discriminate randomly coinciding events in ZnMoO$_4$ cryogenic scintillating bolometers. These events can be effectively rejected at the level of 99% by the analysis of the heat signals with rise-time of about 14 ms and signal-to-noise ratio of 900, and at the level of 92% by the analysis of the light signals with rise-time of about 3 ms and signal-to-noise ratio of 30, under the requirement to detect 95% of single events. These rejection efficiencies are compatible with extremely low background levels in the region of interest of neutrinoless double beta decay of $^{100}$Mo for enriched ZnMoO$_4$ detectors, of the order of $10^{-4}$ counts/(y keV kg). Pulse-shape parameters ...

Chernyak, D M; Giuliani, A; Mancuso, M; Nones, C; Olivieri, E; Tenconi, M; Tretyak, V I

2014-01-01T23:59:59.000Z

410

Robust Inventory Routing with Flexible Time Window Allocation  

E-Print Network [OSTI]

Jan 15, 2015 ... ... time buffers are spread among deliveries and consecutive deliveries at a port are separated by at least some minimum number of periods.

Chengliang Zhang

2015-01-15T23:59:59.000Z

411

Climate Zone Number 1 | Open Energy Information  

Open Energy Info (EERE)

Climate Zone Number 1 Climate Zone Number 1 Jump to: navigation, search A type of climate defined in the ASHRAE 169-2006 standard. Climate Zone Number 1 is defined as Very Hot - Humid(1A) with IP Units 9000 < CDD50ºF and SI Units 5000 < CDD10ºC Dry(1B) with IP Units 9000 < CDD50ºF and SI Units 5000 < CDD10ºC . The following places are categorized as class 1 climate zones: Broward County, Florida Hawaii County, Hawaii Honolulu County, Hawaii Kalawao County, Hawaii Kauai County, Hawaii Maui County, Hawaii Miami-Dade County, Florida Monroe County, Florida Retrieved from "http://en.openei.org/w/index.php?title=Climate_Zone_Number_1&oldid=21604" Category: ASHRAE Climate Zones What links here Related changes Special pages Printable version Permanent link Browse properties

412

What's Behind the Numbers? | Department of Energy  

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

What's Behind the Numbers? What's Behind the Numbers? What's Behind the Numbers? June 24, 2011 - 3:39pm Addthis What's Behind the Numbers? Dr. Richard Newell Dr. Richard Newell What does this mean for me? New website shows data on the why's, when's and how's of crude oil prices. Among the most visible prices that consumers may see on a daily basis are the ones found on the large signs at the gasoline stations alongside our streets and highways. The biggest single factor affecting gasoline prices is the cost of crude oil, the main raw material for gasoline production, which accounts for well over half the price of gasoline at the pump. But what is behind the price of crude oil? This week the U.S. Energy Information Administration (EIA) launched a new web-based assessment highlighting key factors that can affect crude oil

413

REFINED BOUNDS ON THE NUMBER OF CONNECTED ...  

E-Print Network [OSTI]

Nov 6, 2011 ... closure imply using the well-known Smith inequality (see Theorem 2.4) a bound on the number of semi-algebraically connected components of ...

2011-11-06T23:59:59.000Z

414

Analytical number-projected BCS nuclear model  

Science Journals Connector (OSTI)

Transforming both the overlap energy kernel and overlap functionals into polynomial forms, the well-known integral of the number-projected BCS theory is performed analytically. We then obtain the projected ground state BCS energy in the closed form.

Mauro Kyotoku

1988-05-01T23:59:59.000Z

415

Regulation of Numbers of Intracellular Algae  

Science Journals Connector (OSTI)

...Regulation of Numbers of Intracellular Algae L. Muscatine R. R. Pool Members of three classes of unicellular algae have exploited an intracellular habitat...is poorly understood. Steady-state algae:host cell ratios might be achieved by...

1979-01-01T23:59:59.000Z

416

Elastic tail propulsion at low Reynolds number  

E-Print Network [OSTI]

A simple way to generate propulsion at low Reynolds number is to periodically oscillate a passive flexible filament. Here we present a macroscopic experimental investigation of such a propulsive mechanism. A robotic swimmer ...

Yu, Tony S. (Tony Sheung)

2007-01-01T23:59:59.000Z

417

Utility Priority Number Evaluation for FMEA  

Science Journals Connector (OSTI)

Traditionally, decisions on how to improve an operation are based on risk priority number (RPN) in the failure mode and effects analysis (FMEA). Many scholars questioned the RPN method ... make a decision on impr...

Jih Kuang Chen

2007-10-01T23:59:59.000Z

418

Baryon number violation in particle decays  

Science Journals Connector (OSTI)

It has been argued in the past that in baryogenesis via out-of-equilibrium decays one must consider loop diagrams that contain more than one baryon number violating coupling. In this paper we argue that the requirement with regard to baryon number violating couplings in loop diagrams is that the interaction between the intermediate on-shell particles and the final particles should correspond to a net change in baryon number and that this can be satisfied even if the loop diagram contains only one baryon number violating coupling. Put simply, we show that to create a baryon asymmetry there should be net B violation to the right of the “cut” in the loop diagram. This is of relevance to some works involving the out-of-equilibrium decay scenario.

Rathin Adhikari and Raghavan Rangarajan

2002-03-25T23:59:59.000Z

419

Algorithms for Algebraic Number Theory II  

Science Journals Connector (OSTI)

We now leave the realm of quadratic fields where the main computational tasks of algebraic number theory mentioned at the end of Chapter 4 were relatively simple (although as we have seen many conjectures rema...

Henri Cohen

1993-01-01T23:59:59.000Z

420

Bridge Numbers of Torus Knots Jennifer Schultens  

E-Print Network [OSTI]

contained proof of the following result of H. Schubert: If K is a (p, q)-torus knot, then the bridge number below all maxima of h|K, then we say that K is in bridge position with respect to h. The bridge number of whether or not we require K to be in bridge position. Indeed, if h|K has n maxima, then the maxima of h

Schultens, Jennifer

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


421

Task pool teams implementation of the master equation approach for random sierpinski carpets  

Science Journals Connector (OSTI)

We consider the use of task pool teams in implementation of the master equation on random Sierpinski carpets. Though the basic idea of dynamic storage of the probability density reported earlier applies straightforward to random carpets, the randomized ...

K. H. Hoffmann; M. Hofmann; G. Rünger; S. Seeger

2006-08-01T23:59:59.000Z

422

A glimpse of the conformal structure of random planar maps  

E-Print Network [OSTI]

We present a way to study the conformal structure of random planar maps. The main idea is to explore the map along an SLE (Schramm--Loewner evolution) process of parameter $ \\kappa = 6$ and to combine the locality property of the SLE_{6} together with the spatial Markov property of the underlying lattice in order to get a non-trivial geometric information. We follow this path in the case of the conformal structure of random triangulations with a boundary. Under a reasonable assumption called (*) that we have unfortunately not been able to verify, we prove that the limit of uniformized random planar triangulations has a fractal boundary measure of Hausdorff dimension $\\frac{1}{3}$ almost surely. This agrees with the physics KPZ predictions and represents a first step towards a rigorous understanding of the links between random planar maps and the Gaussian free field (GFF).

Nicolas Curien

2014-08-19T23:59:59.000Z

423

Limited Dependent Variable Correlated Random Coefficient Panel Data Models  

E-Print Network [OSTI]

for the average slopes of a linear CRC model with a general nonparametric correlation between regressors and random coefficients. I construct a sqrt(n) consistent estimator for the average slopes via varying coefficient regression. The identification of binary...

Liang, Zhongwen

2012-10-19T23:59:59.000Z

424

Ising model on random networks and the canonical tensor model  

E-Print Network [OSTI]

We introduce a statistical system on random networks of trivalent vertices for the purpose of studying the canonical tensor model, which is a rank-three tensor model in the canonical formalism. The partition function of the statistical system has a concise expression in terms of integrals, and has the same symmetries as the kinematical ones of the canonical tensor model. We consider the simplest non-trivial case of the statistical system corresponding to the Ising model on random networks, and find that its phase diagram agrees with what is implied by regrading the Hamiltonian vector field of the canonical tensor model with N = 2 as a renormalization group flow. Along the way, we obtain an explicit exact expression of the free energy of the Ising model on random networks in the thermodynamic limit by the Laplace method. This paper provides a new example connecting a model of quantum gravity and a random statistical system.

Sasakura, Naoki

2014-01-01T23:59:59.000Z

425

Particle dispersion by random waves in the rotating Boussinesq system  

E-Print Network [OSTI]

We present a theoretical and numerical study of horizontal particle dispersion due to random waves in the three-dimensional rotating and stratified Boussinesq system, which serves as a simple model to study the dispersion ...

Ferrari, Raffaele

426

Optimal consumption and investment for markets with random coefficients.  

E-Print Network [OSTI]

Optimal consumption and investment for markets with random coefficients. Belkacem Berdjane and Serguei Pergamenshchikov December 9, 2011 Abstract We consider an optimal investment and consumption. We assume that an agent makes consumption and investment decisions based on CRRA utility functions

Paris-Sud XI, Université de

427

Random Slip Model of Fatigue and Coffin's Law  

Science Journals Connector (OSTI)

... the model I have proposed2. According to this model the surface of the metal is roughened by a more or less random distribution of slip steps. Thus hills and valleys ...

A. N. MAY

1960-11-12T23:59:59.000Z

428

Probabilistic flooding for efficient information dissemination in random graph topologies  

Science Journals Connector (OSTI)

Probabilistic flooding has been frequently considered as a suitable dissemination information approach for limiting the large message overhead associated with traditional (full) flooding approaches that are used to disseminate globally information in ... Keywords: Information dissemination, Probabilistic flooding, Random graphs

Konstantinos Oikonomou; Dimitrios Kogias; Ioannis Stavrakakis

2010-07-01T23:59:59.000Z

429

Evolution of fast magnetoacoustic pulses in randomly structured coronal plasmas  

E-Print Network [OSTI]

Magnetohydrodynamic waves interact with structured plasmas and reveal the internal magnetic and thermal structures therein, thereby having seismological applications in the solar atmosphere. We investigate the evolution of fast magnetoacoustic pulses in randomly structured plasmas, in the context of large-scale propagating waves in the solar atmosphere. We perform one dimensional numerical simulations of fast wave pulses propagating perpendicular to a constant magnetic field in a low-$\\beta$ plasma with a random density profile across the field. Both linear and nonlinear regimes are considered. We study how the evolution of the pulse amplitude and width depends on their initial values and the parameters of the random structuring. A randomly structured plasma acts as a dispersive medium for a fast magnetoacoustic pulse, causing amplitude attenuation and broadening of the pulse width. After the passage of the main pulse, secondary propagating and standing fast waves appear in the plasma. Width evolution of both...

Yuan, D; Nakariakov, V M; Li, B; Keppens, R

2014-01-01T23:59:59.000Z

430

Wave runup on cylinders subject to deep water random waves  

E-Print Network [OSTI]

was measured close to the test cylinders are analyzed. These data on wave runup in deepwater random waves were generated at similar water depths with significant wave heights and spectral peak periods. Statistical parameters, zero crossing analysis...

Indrebo, Ann Kristin

2012-06-07T23:59:59.000Z

431

Probabilistic Flooding for Efficient Information Dissemination in Random Graph  

E-Print Network [OSTI]

the benefits of the properly parameterized probabilistic flooding scheme. Simulation results sup- portProbabilistic Flooding for Efficient Information Dissemination in Random Graph Topologies 1 & Telecommunications, Athens, Greece Abstract Probabilistic flooding has been frequently considered as a suitable

Stavrakakis, Ioannis

432

SCALING RANDOM WALKS ON ARBITRARY SETS Simon C. Harris  

E-Print Network [OSTI]

SCALING RANDOM WALKS ON ARBITRARY SETS by Simon C. Harris , Robin Sibson and David Williams School deterministic sets I. In the 1-dimensional case discussed here and in the following paper by Harris, much

Harris, Simon Colin

433

The Geometry of the Wilks's Random Field F. Carbonell  

E-Print Network [OSTI]

Wishart random fields, such as Wilks's and Pillai's trace. We apply our results to a problem in brain non-linear deformations required to warp a patient's MRI scan to an atlas standard. Using these vector

Worsley, Keith

434

Hydrogen storage in heat welded random CNT network structures  

Science Journals Connector (OSTI)

Abstract The objective of this study is to investigate hydrogen storage capability of heat welded random carbon nanotube (CNT) network structures. To achieve this objective, different three-dimensional random CNT network structures are generated by using a stochastic algorithm and molecular dynamic simulations. The interaction of CNT networks with hydrogen molecules is then examined via grand canonical Monte Carlo calculations. Hydrogen adsorption capacity of CNT networks having an arbitrarily natured morphology, adjustable porous structure and large surface ratio is investigated. The results show that if cross link density of random CNT networks decreases, hydrogen storage capability of CNT networks increases in terms of the gravimetric capacity. It is observed that random CNT networks could uptake 8.85 wt.% hydrogen at 77 K and this result is very comparable with the results reported in literature where generally ideal ordered nanostructures having no topological irregularities are considered.

Zeynel Ozturk; Cengiz Baykasoglu; Alper T. Celebi; Mesut Kirca; Ata Mugan; Albert C. To

2014-01-01T23:59:59.000Z

435

Chapter 2. Discrete Distributions Random Variables of the Discrete Type  

E-Print Network [OSTI]

) + c2u2(X)] = c1E[u1(X)] + c2E[u2(X)]. Definition: The kth moment mk, k = 1, 2, · · · of a random

Chen, Chaur-Chin

436

Randomized coordinate descent methods for big data optimization   

E-Print Network [OSTI]

This thesis consists of 5 chapters. We develop new serial (Chapter 2), parallel (Chapter 3), distributed (Chapter 4) and primal-dual (Chapter 5) stochastic (randomized) coordinate descent methods, analyze their complexity ...

Takac, Martin

2014-07-01T23:59:59.000Z

437

Secure self-calibrating quantum random-bit generator  

Science Journals Connector (OSTI)

Random-bit generators (RBGs) are key components of a variety of information processing applications ranging from simulations to cryptography. In particular, cryptographic systems require “strong” RBGs that produce high-entropy bit sequences, but traditional software pseudo-RBGs have very low entropy content and therefore are relatively weak for cryptography. Hardware RBGs yield entropy from chaotic or quantum physical systems and therefore are expected to exhibit high entropy, but in current implementations their exact entropy content is unknown. Here we report a quantum random-bit generator (QRBG) that harvests entropy by measuring single-photon and entangled two-photon polarization states. We introduce and implement a quantum tomographic method to measure a lower bound on the “min-entropy” of the system, and we employ this value to distill a truly random-bit sequence. This approach is secure: even if an attacker takes control of the source of optical states, a secure random sequence can be distilled.

M. Fiorentino; C. Santori; S. M. Spillane; R. G. Beausoleil; W. J. Munro

2007-03-26T23:59:59.000Z

438

Random and Raster: Display Technologies and the Development of Videogames  

E-Print Network [OSTI]

Videogame developers have utilized many types of display technology, from oscilloscopes to Teletypes to high-definition LCD displays. Two significant early display technologies, raster scan and random scan CRTs, played a ...

Montfort, Nick

439

An implementation and analysis of a randomized distributed stack  

E-Print Network [OSTI]

This thesis presents an algorithm for a randomized distributed stack, a coded simulator for examining its behavior, and an analysis of data collected from simulations configured to investigate its performance in particular situations...

Kirkland, Dustin Charles

2013-02-22T23:59:59.000Z

440

Electrical resistance of the low dimensional critical branching random walk  

E-Print Network [OSTI]

We show that the electrical resistance between the origin and generation n of the incipient infinite oriented branching random walk in dimensions d0. This answers a question of Barlow, J\\'arai, Kumagai and Slade [2].

Antal A. Járai; Asaf Nachmias

2013-05-06T23:59:59.000Z

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


441

Chemical kinetics of cetane number improving agents  

SciTech Connect (OSTI)

The increasing demand for diesel fuels has resulted in the use of greater percentage of cracked distillates having poor ignition properties. The ignition properties of diesel fuels can be rated in terms of their cetane number and diesel fuels having low cetane number may have poor ignition properties such as diesel knock, difficulties to start engines in the cold weather and so on. Such diesel fuels need cetane number improving agents. In the 1940s and 1950s alkyl nitrates, alkyl nitrites and organic peroxides were found to be effective cetane number improving additives. Our recent study suggests that free radicals produced from thermal decomposition just before ignition should have an important role to improve their ignition properties. However no studies on the reaction mechanism for improving effect of these additives have been attempted because of complex nature of spontaneous ignition reaction of hydrocarbons. In order to clarify the reaction mechanism for improving effects of cetane number improving agents. We here have attempted to simulate the spontaneous ignition of n-butane as a model compound in the presence of alkyl nitrites as cetane number improving agents.

Hashimoto, K.; Akutsu, Y.; Arai, M.; Tamura, M. [Univ. of Tokyo (Japan)

1996-12-31T23:59:59.000Z

442

Chaotic behavior of a random laser with static disorder  

SciTech Connect (OSTI)

We report on an experimental and numerical study of chaotic behavior in random lasers. The complex emission spectra from a disordered amplifying material with static disorder are investigated in a configuration with controlled, stable experimental conditions. It is found that, upon repeated identical excitation, the emission spectra are distinct and uncorrelated. This behavior can be understood in terms of strongly coupled modes that are triggered by spontaneous emission, and is expected to play an important role in most pulsed random lasers.

Mujumdar, Sushil; Tuerck, Volker; Torre, Renato; Wiersma, Diederik S. [European Laboratory for Non-linear Spectroscopy, INFM-BEC, and Phys. Dept., University of Florence, Sesto Fiorentino (Italy)

2007-09-15T23:59:59.000Z

443

Performance of petroleum reservoirs containing random vertical fractures  

E-Print Network [OSTI]

PERFORMANCE OF PETROLEUM RESERVOIRS CONTAINING RANDOM VERTICAL FRACTURES A Thesis By WILLIAM LYMAN HUSKEY Approved as to style and content by: Chairxnan o Coxnxnittee ead of Departxnent PERFORMANCE OF PETROLEUM RESERVOIRS CONTAINING RANDOM...: Petroleum Engineering TABLE OF CONTENTS Page SUMMARY Z. INTRODUCTION . 3. EQUIPMENT AND PROCEDURE 4. PRESENTATION AND DISCUSSION OF RESULTS 5. CONCLUSIONS 6. ACKNOWLEDGMENTS . . 44 7. REFERENCES 8. BIBLIOGRAPHY . 47 TABLE QF GRAPHS AND FIGURES...

Huskey, William Lyman

2012-06-07T23:59:59.000Z

444

Fact #803: November 11, 2013 Average Number of Transmission Gears is on the Rise  

Broader source: Energy.gov [DOE]

The number of gears a transmission has affects a vehicle's fuel economy and performance. The more gears a vehicle has, the more time the engine spends within an optimal operating range while the...

445

Fact #851 December 15, 2014 The Average Number of Gears used in Transmissions Continues to Rise  

Broader source: Energy.gov [DOE]

The number of gears in a transmission affects a vehicle's fuel economy and performance. The more gears a vehicle has, the more time the engine spends within an optimal operating range while the...

446

The number of frog species living in the Amazon basin could be several times greater  

E-Print Network [OSTI]

of enzymes, could lower the cost of producing fuels from biomass. Jay Keasling at Lawrence Berkeley National recognized. A team led by Chris Funk at Colorado State University in Fort Collins gathered and analysed this is thanks, at least in part, to the activities of a class of immune cell called macrophages, say Johanna

Funk, W. Chris

447

Study Reveals Fuel Injection Timing Impact on Particle Number Emissions (Fact Sheet)  

SciTech Connect (OSTI)

Start of injection can improve environmental performance of fuel-efficient gasoline direct injection engines.

Not Available

2012-12-01T23:59:59.000Z

448

A real-time BCI with a small number of channels based on CSP  

Science Journals Connector (OSTI)

For implementations of electroencephalography (EEG)-based brain computer interfaces (BCIs), common spatial pattern (CSP) is one of the most popular methods. Although many variations of CSP have been introduced, t...

Yan Li; Yasuharu Koike

2011-11-01T23:59:59.000Z

449

State-of-the-art in Chaotic Iterations based pseudorandom numbers generators Application in Information Hiding  

E-Print Network [OSTI]

State-of-the-art in Chaotic Iterations based pseudorandom numbers generators Application requires an intensive use of pseudoran- dom number generators having strong security properties. For instance, these generators are used to produce encryption keys, to encrypt data with a one-time pad process

Paris-Sud XI, Université de

450

Precision Timed Machines  

E-Print Network [OSTI]

1.4 Precision Timed Machines . . . . .Precision Timed Machine 2.1precision timed (PRET) machine. pages 264–265, June 2007. [

Liu, Isaac Suyu

2012-01-01T23:59:59.000Z

451

Contract Number: DE-AC05-76RL01830 Modification M881  

E-Print Network [OSTI]

Contract Number: DE-AC05-76RL01830 Modification M881 B-i Part I ­ The Schedule Section B Supplies.......................................................1 #12;Contract Number: DE-AC05-76RL01830 Modification M881 B-1 B­1 Designation of Work in this Contract and as designated in writing from time to time by DOE, including the utilization of information

452

E-Print Network 3.0 - acoustic random waveguides Sample Search...  

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

IN RANDOM JOSSELIN GARNIERAND GEORGE PAPANICOLAOU Summary: . Acoustic waveguides, random media, asymptotic analysis. AMS subject classifications. 76B15, 35Q99, 60F05. 1... PULSE...

453

Random telegraph signals by alkanethiol-protected Au nanoparticles in chemically assembled single-electron transistors  

SciTech Connect (OSTI)

We have studied random telegraph signals (RTSs) in a chemically assembled single-electron transistor (SET) at temperatures as low as 300 mK. The RTSs in the chemically assembled SET were investigated by measuring the source–drain current, using a histogram of the RTS dwell time, and calculating the power spectrum density of the drain current–time characteristics. It was found that the dwell time of the RTS was dependent on the drain voltage of the SET, but was independent of the gate voltage. Considering the spatial structure of the chemically assembled SET, the origin of the RTS is attributed to the trapped charges on an alkanethiol-protected Au nanoparticle positioned near the SET. These results are important as they will help to realize stable chemically assembled SETs in practical applications.

Kano, Shinya [Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama 226-8503 (Japan); CREST, Japan Science and Technology Agency, Yokohama 226-8503 (Japan); Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE (United Kingdom); Azuma, Yasuo [Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama 226-8503 (Japan); CREST, Japan Science and Technology Agency, Yokohama 226-8503 (Japan); Tanaka, Daisuke [CREST, Japan Science and Technology Agency, Yokohama 226-8503 (Japan); Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8571 (Japan); Institute for Chemical Research, Kyoto University, Uji 611-0011 (Japan); Sakamoto, Masanori [CREST, Japan Science and Technology Agency, Yokohama 226-8503 (Japan); Institute for Chemical Research, Kyoto University, Uji 611-0011 (Japan); PRESTO, Japan Science and Technology Agency, Uji 611-0011 (Japan); Teranishi, Toshiharu [CREST, Japan Science and Technology Agency, Yokohama 226-8503 (Japan); Institute for Chemical Research, Kyoto University, Uji 611-0011 (Japan); Smith, Luke W.; Smith, Charles G. [Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE (United Kingdom); Majima, Yutaka, E-mail: majima@msl.titech.ac.jp [Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama 226-8503 (Japan); CREST, Japan Science and Technology Agency, Yokohama 226-8503 (Japan); Department of Printed Electronics Engineering, Sunchon National University, Sunchon 540-742 (Korea, Republic of)

2013-12-14T23:59:59.000Z

454

Hippocampal ``Time Cells'': Time versus Path Integration  

E-Print Network [OSTI]

Neuron Article Hippocampal ``Time Cells'': Time versus Path Integration Benjamin J. Kraus,1 function of hippocampal networks (Etienne and Jeffery, 2004; McNaughton et al., 1991, 1996, 2006; O

Hasselmo, Michael

455

Magnetic field correlations in a random flow with strong steady shear  

E-Print Network [OSTI]

We analyze magnetic kinematic dynamo in a conducting fluid where the stationary shear flow is accompanied by relatively weak random velocity fluctuations. The diffusionless and diffusion regimes are described. The growth rates of the magnetic field moments are related to the statistical characteristics of the flow describing divergence of the Lagrangian trajectories. The magnetic field correlation functions are examined, we establish their growth rates and scaling behavior. General assertions are illustrated by explicit solution of the model where the velocity field is short-correlated in time.

I. Kolokolov; V. Lebedev; G. Sizov

2010-10-28T23:59:59.000Z

456

Time in quantum mechanics  

E-Print Network [OSTI]

OF CONTENTS I. INTRODUCTION II. HISTORICAL DEVELOPMENT A. Classical Mechanics B. Quantum Theory . C. The Problem 3 4 6 III. TIME ATOMS AND DISCRETE TIME A. The Earliest Applications of Atomistic and Discrete Time . . . . . B. The Radiating Electron... . C. Quantum Field Theory 8 10 l2 IV. TIME OPERATOR FORMULATIONS 16 A. Advocates Against a Time Operator . B. The Possibility of a Time Operator C, Advocates in Favor of a Time Operator D. A Restricted Time Delay Operator: Scattering Theory...

Chapin, Kimberly R.

2012-06-07T23:59:59.000Z

457

E-Print Network 3.0 - analyzing time-series gene Sample Search...  

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

series in terms of number... gene networks from time series include boolean network models, 5 Correlation Metric Construction, 6... - constructed time ... Source: D'haeseleer,...

458

Climate Zone Number 7 | Open Energy Information  

Open Energy Info (EERE)

Climate Zone Number 7 Climate Zone Number 7 Jump to: navigation, search A type of climate defined in the ASHRAE 169-2006 standard. Climate Zone Number 7 is defined as Very Cold with IP Units 9000 < HDD65ºF ≤ 12600 and SI Units 5000 < HDD18ºC ≤ 7000 . The following places are categorized as class 7 climate zones: Aitkin County, Minnesota Aleutians East Borough, Alaska Aleutians West Census Area, Alaska Anchorage Borough, Alaska Aroostook County, Maine Ashland County, Wisconsin Baraga County, Michigan Barnes County, North Dakota Bayfield County, Wisconsin Becker County, Minnesota Beltrami County, Minnesota Benson County, North Dakota Bottineau County, North Dakota Bristol Bay Borough, Alaska Burke County, North Dakota Burnett County, Wisconsin Carlton County, Minnesota Cass County, Minnesota

459

Microsoft Word - Document Numbering Plan.doc  

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

document Number Plan 11/3/2005 document Number Plan 11/3/2005 All documents numbers start with a 9 9 _ _ ___ | | | | | Document per chart | Generation (i.e. PSS has 1,2&3, FEEPS has 1&2) Use 0 when the document doesn't apply to any of these System 0- Non system Specific (group wide) 1- PSS 2- Reserved for PSS expansion 3- FEEPS 4- Reserved for FEEPS expansion 5- BLEPS 6- Reserved for BLEPS expansion 7- DIW 8- Reserved for future use 9- Reserved for future use 000-099 Requirements 000 - Statement of work For x.1.4.1.4 - Design Statement of Work For Beamlines - Installation Statement of Work 001-009 Reserved for Statement of Works for upgrade, revisions, add-ons, etc. 010 - Cost Estimate 011-019 Additional Cost Estimates

460

Notices OMB Control Number: 1850-0803.  

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

870 Federal Register 870 Federal Register / Vol. 78, No. 140 / Monday, July 22, 2013 / Notices OMB Control Number: 1850-0803. Type of Review: Extension without change of an existing collection of information. Respondents/Affected Public: Individuals or households. Total Estimated Number of Annual Responses: 135,000. Total Estimated Number of Annual Burden Hours: 27,000. Abstract: This is a request for a 3-year renewal of the generic clearance to allow the National Center for Education Statistics (NCES) to continue to develop, test, and improve its survey and assessment instruments and methodologies. The procedures utilized to this effect include but are not limited to experiments with levels of incentives for various types of survey operations, focus groups, cognitive laboratory

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


461

Number Counts and Dynamical Vacuum Cosmologies  

E-Print Network [OSTI]

We study non-linear structure formation in an interacting model of the dark sector of the Universe in which the dark energy density decays linearly with the Hubble parameter, $\\rho_{\\Lambda} \\propto H$, leading to a constant-rate creation of cold dark matter. We derive all relevant expressions to calculate the mass function and the cluster number density using the Sheth-Torman formalism and show that the effect of the interaction process is to increase the number of bound structures of large masses ($M \\gtrsim 10^{14} M_{\\odot}h^{-1}$) when compared to the standard $\\Lambda$CDM model. Since these models are not reducible to each other, this number counts signature can in principle be tested in future surveys.

N. Chandrachani Devi; H. A. Borges; S. Carneiro; J. S. Alcaniz

2014-07-07T23:59:59.000Z

462

Number Counts and Dynamical Vacuum Cosmologies  

E-Print Network [OSTI]

We study non-linear structure formation in an interacting model of the dark sector of the Universe in which the dark energy density decays linearly with the Hubble parameter, $\\rho_{\\Lambda} \\propto H$, leading to a constant-rate creation of cold dark matter. We derive all relevant expressions to calculate the mass function and the cluster number density using the Sheth-Torman formalism and show that the effect of the interaction process is to increase the number of bound structures of large masses ($M \\gtrsim 10^{14} M_{\\odot}h^{-1}$) when compared to the standard $\\Lambda$CDM model. Since these models are not reducible to each other, this number counts signature can in principle be tested in future surveys.

Devi, N Chandrachani; Carneiro, S; Alcaniz, J S

2014-01-01T23:59:59.000Z

463

Climate Zone Number 3 | Open Energy Information  

Open Energy Info (EERE)

Number 3 Number 3 Jump to: navigation, search A type of climate defined in the ASHRAE 169-2006 standard. Climate Zone Number 3 is defined as Warm - Humid(3A) with IP Units 4500 < CDD50ºF ≤ 6300 and SI Units 2500 < CDD10ºC < 3500 Dry(3B) with IP Units 4500 < CDD50ºF ≤ 6300 and SI Units 2500 < CDD10ºC < 3500 Warm - Marine(3C) with IP Units CDD50ºF ≤ 4500 AND HDD65ºF ≤ 3600 and SI Units CDD10ºC ≤ 2500 AND HDD18ºC ≤ 2000 . The following places are categorized as class 3 climate zones: Abbeville County, South Carolina Adair County, Oklahoma Adams County, Mississippi Aiken County, South Carolina Alameda County, California Alcorn County, Mississippi Alfalfa County, Oklahoma Allendale County, South Carolina Amite County, Mississippi Anderson County, South Carolina

464

Probing lepton number violation on three frontiers  

SciTech Connect (OSTI)

Neutrinoless double beta decay constitutes the main probe for lepton number violation at low energies, motivated by the expected Majorana nature of the light but massive neutrinos. On the other hand, the theoretical interpretation of the (non-)observation of this process is not straightforward as the Majorana neutrinos can destructively interfere in their contribution and many other New Physics mechanisms can additionally mediate the process. We here highlight the potential of combining neutrinoless double beta decay with searches for Tritium decay, cosmological observations and LHC physics to improve the quantitative insight into the neutrino properties and to unravel potential sources of lepton number violation.

Deppisch, Frank F. [Department of Physics and Astronomy, University College London (United Kingdom)

2013-12-30T23:59:59.000Z

465

Compare Activities by Number of Employees  

U.S. Energy Information Administration (EIA) Indexed Site

this page, please call 202-586-8800. Employees per Building by Building Type Inpatient health care buildings averaged six times more employees per building than any other...

466

Sandia National Laboratories: Reynolds number effects  

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

Doppler Velocimeter EC Top Publications A Comparison of Platform Options for Deep-water Floating Offshore Vertical Axis Wind Turbines: An Initial Study Nonlinear Time-Domain...

467

Self-averaging in time reversal for the parabolic wave equation Guillaume Bal George Papanicolaou y Leonid Ryzhik z  

E-Print Network [OSTI]

is the solution of a transport equation. 1 Introduction In time-reversal experiments a signal emitted, in the regimes of random geometrical optics and radiative transfer (transport), was studied in [2, 3]. We also in the radiative transfer regime using the parabolic wave equation, when the waves interact fully with the random

Bal, Guillaume

468

Table B14. Number of Establishments in Building, Number of Buildings, 1999  

U.S. Energy Information Administration (EIA) Indexed Site

4. Number of Establishments in Building, Number of Buildings, 1999" 4. Number of Establishments in Building, Number of Buildings, 1999" ,"Number of Buildings (thousand)" ,"All Buildings","Number of Establishments in Building" ,,"One","Two to Five","Six to Ten","Eleven to Twenty","More than Twenty","Currently Unoccupied" "All Buildings ................",4657,3528,688,114,48,27,251 "Building Floorspace" "(Square Feet)" "1,001 to 5,000 ...............",2348,1897,272,"Q","Q","Q",164 "5,001 to 10,000 ..............",1110,802,222,17,"Q","Q","Q" "10,001 to 25,000 .............",708,506,121,51,12,"Q",17 "25,001 to 50,000 .............",257,184,33,15,15,"Q","Q"

469

Beamline Phone Numbers| Advanced Photon Source  

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

Interactive Map Interactive Map Beamlines Map Beamlines Directory Techniques Directory Sectors Directory Beamline Phone Numbers Status and Schedule Beamline Phone Numbers From on-site, dial 2, then a number listed below. From off-site, dial 630-252 and a number listed below. Sector 1 1-BM-A: 1701 1-BM-C: 5468 1-ID: 1801 Sector 2 2-BM: 1702 2-ID-B: 1628 2-ID-D: 1802 2-ID-E: 3711 Sector 3 3-ID: 1803 Sector 4 4-ID-C: 1704 4-ID-D: 1804 Sector 5 5-BM: 1705 5-ID: 1805 Sector 6 6-ID-B: 1806 6-ID-C: 1406 6-ID-D: 1606 Sector 7 7-ID-B: 1607 7-ID-C: 1707 7-ID-D: 1807 7-ID-E: 1207 Sector 8 8-ID-E: 1908 8-ID-I: 1808 Sector 9 9-BM-B: 1709 9-ID-B: 0349 9-ID-C: 1809 Column 95: 4705 Sector 10 10-BM-B: 6792 10-ID-B: 1710 Sector 11 11-BM-B: 5877 11-ID-B: 1711 11-ID-C: 1711 11-ID-D: 2162 Laser lab: 0379 Sector 12 12-BM-B: 0378 12-ID-B,C: 1712

470

March 2005 Number 238 CARBON CAPTURE AND  

E-Print Network [OSTI]

March 2005 Number 238 CARBON CAPTURE AND STORAGE (CCS) As part of the government's global strategy. This POSTnote discusses the potential of carbon capture and storage (CCS), a method of carbon sequestration2 stages: CO2 capture, transport and storage. CO2 capture Carbon capture is best applied to large

Mather, Tamsin A.

471

Colorado Number of Natural Gas Consumers  

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

,606,602 1,622,434 1,634,587 1,645,716 1,659,808 1,672,312 1986-2013 Sales 1,634,582 1,645,711 1,659,803 1,672,307 1997-2013 Transported 5 5 5 5 1997-2013 Commercial Number of...

472

Report Number: _____________ UNIVERSITY OF CONNECTICUT HEALTH CENTER  

E-Print Network [OSTI]

Report Number: _____________ UNIVERSITY OF CONNECTICUT HEALTH CENTER EMPLOYEE SAFETY HAZARD REPORT health, life or property are to be reported by phone to "7777" on campus and "911" off campus. Employees are to use this form to report other hazards. The employee is then to distribute copies of this completed

Kim, Duck O.

473

Heat Transfer at Small Grashof Numbers  

Science Journals Connector (OSTI)

...January 1957 research-article Heat Transfer at Small Grashof Numbers J. J...physical arguments suggest that the heat transfer from a body, immersed in a fluid...the problem is small. However, heat-transfer rates predicted in this fashion...

1957-01-01T23:59:59.000Z

474

Estimate octane numbers using an enhanced method  

SciTech Connect (OSTI)

An improved model, based on the Twu-Coon method, is not only internally consistent, but also retains the same level of accuracy as the previous model in predicting octanes of gasoline blends. The enhanced model applies the same binary interaction parameters to components in each gasoline cut and their blends. Thus, the enhanced model can blend gasoline cuts in any order, in any combination or from any splitting of gasoline cuts and still yield the identical value of octane number for blending the same number of gasoline cuts. Setting binary interaction parameters to zero for identical gasoline cuts during the blending process is not required. The new model changes the old model`s methodology so that the same binary interaction parameters can be applied between components inside a gasoline cut as are applied to the same components between gasoline cuts. The enhanced model is more consistent in methodology than the original model, but it has equal accuracy for predicting octane numbers of gasoline blends, and it has the same number of binary interaction parameters. The paper discusses background, enhancement of the Twu-Coon interaction model, and three examples: blend of 2 identical gasoline cuts, blend of 3 gasoline cuts, and blend of the same 3 gasoline cuts in a different order.

Twu, C.H.; Coon, J.E. [Simulation Sciences Inc., Brea, CA (United States)

1997-03-01T23:59:59.000Z

475

Student's Department: Course/Section Number  

E-Print Network [OSTI]

Student's Department: Course/Section Number: Course Title: Instructor: Explanation of why coursework has not yet been completed: Description of coursework remaining to be completed: Graduate Student is Requested: Arts & Sciences Students: Shriver Hall 28 (Graduate Affairs and Admissions Office) Engineering

Weaver, Harold A. "Hal"

476

STUDENT HANDBOOK Table of Contents Page Number  

E-Print Network [OSTI]

STUDENT HANDBOOK Campus #12;Table of Contents Page Number Welcome 1 The School 1 Mission Statement Student Resources 8 Financial Aid and Funding Sources Writing Supports 9 Special Needs Computers Libraries RefWorks 10 Student Services 11 Administrative Information 14 Student ID, and Email Accounts U of R

Saskatchewan, University of

477

Connecticut Number of Natural Gas Consumers  

U.S. Energy Information Administration (EIA) Indexed Site

487,320 489,349 490,185 494,970 504,138 513,492 1986-2013 Sales 489,380 494,065 503,241 512,110 1997-2013 Transported 805 905 897 1,382 1997-2013 Commercial Number of Consumers...

478

Volume 22, Number 2, 2014 ENGINEERING  

E-Print Network [OSTI]

-users [2,3,4,5] reduce health risks [6,7,8], and mitigate the greenhouse gas impact of lighting techVolume 22, Number 2, 2014 LIGHT & ENGINEERING Znack Publishing House, Moscow ISSN 0236-2945 #12 Advisory Board: Lou Bedocs, Thorn Lighting Limited, United Kingdom Wout van Bommel, Philips Lighting

Jacobson, Arne

479

Idaho Number of Natural Gas Consumers  

Gasoline and Diesel Fuel Update (EIA)

36,191 342,277 346,602 350,871 353,963 359,889 1987-2013 Sales 346,602 350,871 353,963 359,889 1997-2013 Commercial Number of Consumers 37,320 38,245 38,506 38,912 39,202 39,722...

480

Gorilla numbers doubled in the Congo  

Science Journals Connector (OSTI)

... previously thought, according to a census of the northern regions of the Republic of the Congo. Led by the New-York-based Wildlife Conservation Society (WCS), the count found ... attributes the high numbers to successful management of protected areas in the Republic of the Congo, a food-rich habitat and the “remoteness and inaccessibility” of the region. The ...

2008-08-13T23:59:59.000Z

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


481

Paper Number (Assigned by IFPE Staff)  

E-Print Network [OSTI]

Paper Number (Assigned by IFPE Staff) Compressed Air Energy Storage for Offshore Wind Turbines pumped hydro, compressed air energy storage, a variety of battery chemistries, capacitors, flywheels of this paper, compressed air energy storage, is highly scalable, reasonably inexpensive, provides moderate ramp

Li, Perry Y.

482

The New Element Curium (Atomic Number 96)  

DOE R&D Accomplishments [OSTI]

Two isotopes of the element with atomic number 96 have been produced by the helium-ion bombardment of plutonium. The name curium, symbol Cm, is proposed for element 96. The chemical experiments indicate that the most stable oxidation state of curium is the III state.

Seaborg, G. T.; James, R. A.; Ghiorso, A.

1948-00-00T23:59:59.000Z

483

Web-based random variate generation for stochastic simulations  

Science Journals Connector (OSTI)

This paper presents a random variate generation (RVG) world wide web (web) service and an RVG web-based software application, both of which are developed in compliance with the Java 2 Enterprise Edition (J2EE) architecture and run under the IBM WebSphere Application Server. The RVG web service can be invoked programmatically over the web by using simple object access protocol (SOAP) through the hyper text transfer protocol (HTTP) using the extensible markup language (XML). The RVG web service and software both generate random variates from 27 probability distributions and provide general statistics, scatter plot, and histogram of the requested random variates. The plots and histograms are created in the scalable vector graphics (SVG) format. The RVG web service can be used for stochastic input data modelling of a web-based simulation. The RVG software can be used as a web-based application for a variety of purposes including teaching random variate generation, probabilistic modelling and random experimentation.

Mohammad Sabah; Osman Balci

2005-01-01T23:59:59.000Z

484

Apply for Beam Time | Advanced Photon Source  

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

Apply for Beam Time Apply for Beam Time NEXT PROPOSAL DEADLINE: March 7, 2014 @ 11:59 PM (Chicago time) Submit Proposal » SEE ALSO: Calendar: deadlines, run & review dates Help Page: frequently asked questions, tips for success, common errors, blank forms, instructions Review Criteria Sectors Directory: check CAT websites for info about managed beam time The Run 2014-2 proposal submission deadline is 11:59 p.m. (Chicago time) March 7, 2014. The system will open to accept proposals beginning December 20, 2013. NEW USERS: to avoid delays and to make the most of your time on site, read Become a User. You must register as a user and receive a badge number before submitting a proposal. About the Beam Time Request Process All beam time at the APS must be requested each cycle through the web-based

485

Section 3-4: Continuous Random Vari- Random Variables (RV): Denoted by capital letters,  

E-Print Network [OSTI]

(a X b) is the area under f(x) between a and b. · P(X = a) = 0. · P(a X b) = P(a in a copier (in hours) is f(x) = 1 3000 exp[- x 3000 ], x 0, and zero otherwise. Find the probability that 1. A component fails before 3000 hours. · Determine the number of hours at which 10% of all components have

Li, Haijun

486

Multi-Boson Correlation Interferometry and Boson Sampling in Time  

E-Print Network [OSTI]

We develop a general description of multi-boson interference based on correlated measurements in arbitrary passive linear interferometers for single input bosons with arbitrary temporal distributions. Our results allow us to fully describe boson sampling in time at the output of a random interferometer, in which the sampling takes place not only over the interferometer output ports but also over the joint-detection times. For any joint detection, both the time-dependent probability density and the time-averaged probability can be expressed by the permanents of matrices depending on the interferometer evolution and on the boson temporal distributions.

Vincenzo Tamma; Simon Laibacher

2014-10-29T23:59:59.000Z

487

The Theory of Random Dynamical Systems and its Applications Tsir elson(1975) Yor(1992)  

E-Print Network [OSTI]

, a complex analogue of a devil's staircase function appears ([H. Sumi: Random complex dynamics and semigroups

Sumi, Hiroki

488

Towards an Analysis of Minimaxing of Game Trees with Random Leaf Values \\Lambda  

E-Print Network [OSTI]

@dcs.bbk.ac.uk Abstract Random minimaxing introduced in [BEAL94] is the process of using a random static evalu­ ation the standard minimax procedure. The experiments carried out by Beal and Smith [BEAL94] using random minimaxing justification for Beal and Smith's experiments. In particular we show that, with respect to chess, random

Levene, Mark

489

On the concentration of eigenvalues of random symmetric matrices Michael Krivelevich  

E-Print Network [OSTI]

. The semi-circle law. For 1 i j n let aij be real valued independent random variables satisfying: 1 concentration results for the eigen- values of random symmetric matrices. Thus, instead of trying to calculate-th largest eigenvalue of a random symmetric n-by-n matrix with independent random entries of absolute value

Alon, Noga

490

Inverted random nanopyramids patterning for crystalline silicon photovoltaics  

E-Print Network [OSTI]

We demonstrate a nanopatterning technique for silicon photovoltaics, which optically outperforms conventional micron-scale random pyramids, while decreasing by a factor of ten the quantity of silicon lost during the texturing process. We combine hole-mask colloidal lithography, a bottom-up nanolithography technique, with reactive ion etching to define nanopyramids at the surface of a silicon wafer. Thanks to the self-organised aspect of the technique, the beads are randomly distributed, however keeping a interbead distance of the order of their diameter. We tune the nanopattern feature size to maximize the absorption in the crystalline silicon by exploiting both anti-reflection and light trapping. When optimized, the nanopyramids lead to a higher absorption in the crystalline silicon than the conventional micron-scale random pyramids in the visible and near the band edge, with a superior robustness to variations of the angle of the incident light. As the nanopatterning technique presented here is simple, we e...

Daif, Ounsi El; Niesen, Bjoern; Yaala, Marwa Ben; Sharma, Parikshit Pratim; Depauw, Valerie; Gordon, Ivan

2013-01-01T23:59:59.000Z

491

Micro and Macro Benefits of Random Investments in Financial Markets  

E-Print Network [OSTI]

In this paper, making use of recent statistical physics techniques and models, we address the specific role of randomness in financial markets, both at the micro and the macro level. In particular, we review some recent results obtained about the effectiveness of random strategies of investment, compared with some of the most used trading strategies for forecasting the behavior of real financial indexes. We also push forward our analysis by means of a Self-Organized Criticality model, able to simulate financial avalanches in trading communities with different network topologies, where a Pareto-like power law behavior of wealth spontaneously emerges. In this context, we present new findings and suggestions for policies based on the effects that random strategies can have in terms of reduction of dangerous financial extreme events, i.e. bubbles and crashes.

Biondo, Alessio Emanuele; Rapisarda, Andrea

2014-01-01T23:59:59.000Z

492

Betti Numbers, Spectral Sequences and Algorithms for computing them  

E-Print Network [OSTI]

1 Betti Numbers, Spectral Sequences and Algorithms for computing them Saugata Basu School on the number of connected components, Betti numbers etc. In terms of: #12;4 Complexity of Semi-algebraic Sets Uniform bounds on the number of connected components, Betti numbers etc. In terms of: The number

Basu, Saugata

493

Physical random bit generation from chaotic solitary laser diode  

E-Print Network [OSTI]

We demonstrate the physical generation of random bits at high bit rates (> 100 Gb/s) using optical chaos from a solitary laser diode and therefore without the complex addition of either external optical feedback or injection. This striking result is obtained despite the low dimension and relatively small bandwidth of the laser chaos, i.e. two characteristics that have been so far considered as limiting the performances of optical chaos-based applications. We unambiguously attribute the successful randomness at high speed to the physics of the laser chaotic polarization dynamics and the resulting growth rate of the dynamical entropy.

Martin Virte; Emeric Mercier; Hugo Thienpont; Krassimir Panajotov; Marc Sciamanna

2014-06-11T23:59:59.000Z

494

Efficient solar anti-neutrino production in random magnetic fields  

E-Print Network [OSTI]

We have shown that the electron anti-neutrino appearance in the framework of the spin flavor conversion mechanism is much more efficient in the case of neutrino propagation through random than regular magnetic field. This result leads to much stronger limits on the product of the neutrino transition magnetic moment and the solar magnetic field based on the recent KamLAND data. We argue that the existence of the random magnetic fields in the solar convective zone is a natural sequence of the convective zone magnetic field evolution.

O. G. Miranda; T. I. Rashba; A. I. Rez; J. W. F. Valle

2004-05-12T23:59:59.000Z

495

Random-Gap Model for Graphene and Graphene Bilayers  

Science Journals Connector (OSTI)

The effect of a randomly fluctuating gap, created by a random staggered potential, is studied in a monolayer and a bilayer of graphene. The density of states, the one-particle scattering rate, and the transport properties (diffusion coefficient and conductivity) are calculated at the neutrality point. All of these quantities vanish at a critical value of the average staggered potential, signaling a continuous transition to an insulating behavior. Transport quantities are directly linked to the one-particle scattering rate. Although the behavior is qualitatively the same in mono- and bilayers, the effect of disorder is much stronger in the latter.

K. Ziegler

2009-03-24T23:59:59.000Z

496

SLE description of the nodal lines of random wave functions  

E-Print Network [OSTI]

The nodal lines of random wave functions are investigated. We demonstrate numerically that they are well approximated by the so-called SLE_6 curves which describe the continuum limit of the percolation cluster boundaries. This result gives an additional support to the recent conjecture that the nodal domains of random (and chaotic) wave functions in the semi classical limit are adequately described by the critical percolation theory. It is also shown that using the dipolar variant of SLE reduces significantly finite size effects.

E. Bogomolny; R. Dubertrand; C. Schmit

2006-09-07T23:59:59.000Z

497

Contractor: Contract Number: Contract Type: Total Estimated  

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

Number: Number: Contract Type: Total Estimated Contract Cost: Performance Period Total Fee Earned FY2008 $2,550,203 FY2009 $39,646,446 FY2010 $64,874,187 FY2011 $66,253,207 FY2012 $41,492,503 FY2013 $0 FY2014 FY2015 FY2016 FY2017 FY2018 Cumulative Fee Earned $214,816,546 Fee Available $2,550,203 Minimum Fee $77,931,569 $69,660,249 Savannah River Nuclear Solutions LLC $458,687,779 $0 Maximum Fee Fee Information $88,851,963 EM Contractor Fee Site: Savannah River Site Office, Aiken, SC Contract Name: Management & Operating Contract September 2013 DE-AC09-08SR22470

498

Entanglement Distillation Protocols and Number Theory  

E-Print Network [OSTI]

We show that the analysis of entanglement distillation protocols for qudits of arbitrary dimension $D$ benefits from applying basic concepts from number theory, since the set $\\zdn$ associated to Bell diagonal states is a module rather than a vector space. We find that a partition of $\\zdn$ into divisor classes characterizes the invariant properties of mixed Bell diagonal states under local permutations. We construct a very general class of recursion protocols by means of unitary operations implementing these local permutations. We study these distillation protocols depending on whether we use twirling operations in the intermediate steps or not, and we study them both analitically and numerically with Monte Carlo methods. In the absence of twirling operations, we construct extensions of the quantum privacy algorithms valid for secure communications with qudits of any dimension $D$. When $D$ is a prime number, we show that distillation protocols are optimal both qualitatively and quantitatively.

H. Bombin; M. A. Martin-Delgado

2005-03-01T23:59:59.000Z

499

Entanglement distillation protocols and number theory  

SciTech Connect (OSTI)

We show that the analysis of entanglement distillation protocols for qudits of arbitrary dimension D benefits from applying basic concepts from number theory, since the set Z{sub D}{sup n} associated with Bell diagonal states is a module rather than a vector space. We find that a partition of Z{sub D}{sup n} into divisor classes characterizes the invariant properties of mixed Bell diagonal states under local permutations. We construct a very general class of recursion protocols by means of unitary operations implementing these local permutations. We study these distillation protocols depending on whether we use twirling operations in the intermediate steps or not, and we study them both analytically and numerically with Monte Carlo methods. In the absence of twirling operations, we construct extensions of the quantum privacy algorithms valid for secure communications with qudits of any dimension D. When D is a prime number, we show that distillation protocols are optimal both qualitatively and quantitatively.

Bombin, H.; Martin-Delgado, M.A. [Departamento de Fisica Teorica I, Universidad Complutense, 28040 Madrid (Spain)

2005-09-15T23:59:59.000Z

500

Case Numbers: TBH-0063, TBZ-0063  

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

May 21, 2008 May 21, 2008 DEPARTMENT OF ENERGY OFFICE OF HEARINGS AND APPEALS Initial Agency Decision Motion To Dismiss Name of Case: Richard L. Urie Dates of Filing: May 15, 2007 July 19, 2007 Case Numbers: TBH-0063 TBZ-0063 This Decision concerns a Complaint filed by Richard L. Urie (hereinafter referred to as "Mr. Urie" or "the Complainant") against Los Alamos National Laboratory (hereinafter referred to as "LANL" or "the Respondent"), his former employer, under the Department of Energy's (DOE) Contractor