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IEEE Symposium on Computational Intelligence Applications In Smart Grid (CIASG)

作者： Diogenes Molina Jiaqi Liang Ron Harley Ganesh K. Venayagamoorthy Department of Electrical and Computer Engineering Georgia Institute of Technology Atlanta GA USA Real-Time Power and Intelligent System Laboratory Missouri University of Science and Technology Rolla MO USA

For Artificial Neural Networks (ANN) to become more widely used in power systems and the future smart grids, ANN based algorithms must be capable of scaling up as they try to identify and control larger and larger parts of a power system. This paper goes through the process of scaling up an ANN based identifier as it is driven to identify increasingly larger portions of a power system. Distributed and centralized approaches for scaling up are taken and the pros and cons of each are presented. The New England/New York 68-bus power network is used as the test bed for the studies. It is shown that while a fully-connected (centralized) ANNs is capable of identification of the system with appropriate accuracy, the increase in the training times required to obtain an acceptable set of weights becomes prohibitive as the system size is increased.

关键词： Artificial neural networks Power system dynamics Recurrent neural networks Training Generators Testing

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ERRATUM: 'CONSTRAINTS ON THE COSMIC-RAY DENSITY GRADIENT BEYOND THE SOLAR CIRCLE FROM FERMI γ-RAY OBSERVATIONS OF THE THIRD GALACTIC QUADRANT' (2011, ApJ, 726, 81)

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The Astrophysical Journal 2013年第2期772卷

作者： M. Ackermann M. Ajello L. Baldini J. Ballet G. Barbiellini D. Bastieri K. Bechtol R. Bellazzini B. Berenji E. D. Bloom E. Bonamente A. W. Borgland T. J. Brandt J. Bregeon A. Brez M. Brigida P. Bruel R. Buehler S. Buson G. A. Caliandro R. A. Cameron P. A. Caraveo J. M. Casandjian C. Cecchi E. Charles A. Chekhtman J. Chiang S. Ciprini R. Claus J. Cohen-Tanugi J. Conrad C. D. Dermer F. de Palma S. W. Digel P. S. Drell R. Dubois C. Favuzzi E. C. Ferrara W. B. Focke Y. Fukazawa S. Funk P. Fusco F. Gargano S. Germani N. Giglietto F. Giordano M. Giroletti T. Glanzman G. Godfrey I. A. Grenier S. Guiriec D. Hadasch Y. Hanabata A. K. Harding K. Hayashi M. Hayashida R. E. Hughes R. Itoh G. Jóhannesson A. S. Johnson W. N. Johnson T. Kamae H. Katagiri J. Kataoka J. Knödlseder M. Kuss J. Lande L. Latronico S.-H. Lee M. Llena-Garde F. Longo F. Loparco M. N. Lovellette P. Lubrano A. Makeev P. Martin M. N. Mazziotta J. E. McEnery J. Mehault P. F. Michelson T. Mizuno C. Monte M. E. Monzani A. Morselli I. V. Moskalenko S. Murgia M. Naumann-Godo S. Nishino P. L. Nolan J. P. Norris E. Nuss T. Ohsugi A. Okumura N. Omodei E. Orlando J. F. Ormes M. Ozaki D. Parent V. Pelassa M. Pepe M. Pesce-Rollins F. Piron T. A. Porter S. Rainò R. Rando M. Razzano A. Reimer O. Reimer J. Ripken T. Sada H. F.-W. Sadrozinski C. Sgrò E. J. Siskind G. Spandre P. Spinelli M. S. Strickman A. W. Strong D. J. Suson H. Takahashi T. Takahashi T. Tanaka J. B. Thayer D. J. Thompson L. Tibaldo D. F. Torres A. Tramacere Y. Uchiyama T. Uehara T. L. Usher J. Vandenbroucke V. Vasileiou N. Vilchez V. Vitale A. E. Vladimirov A. P. Waite P. Wang K. S. Wood Z. Yang M. Ziegler W. W. Hansen Experimental Physics Laboratory Kavli Institute for Particle Astrophysics and Cosmology Department of Physics and SLAC National Accelerator Laboratory Stanford University Stanford CA 94305 USA Istituto Nazionale di Fisica Nucleare Sezione di Pisa I-56127 Pisa Italy Laboratoire AIM CEA-IRFU/CNRS/Université Paris Diderot Service d'Astrophysique CEA Saclay F-91191 Gif sur Yvette France Istituto Nazionale di Fisica Nucleare Sezione di Trieste I-34127 Trieste Italy Dipartimento di Fisica Università di Trieste I-34127 Trieste Italy Istituto Nazionale di Fisica Nucleare Sezione di Padova I-35131 Padova Italy Dipartimento di Fisica 'G. Galilei ' Università di Padova I-35131 Padova Italy Istituto Nazionale di Fisica Nucleare Sezione di Perugia I-06123 Perugia Italy Dipartimento di Fisica Università degli Studi di Perugia I-06123 Perugia Italy Centre d'Étude Spatiale des Rayonnements CNRS/UPS BP 44346 F-30128 Toulouse Cedex 4 France Department of Physics Center for Cosmology and Astro-Particle Physics The Ohio State University Columbus OH 43210 USA Dipartimento di Fisica 'M. Merlin' dell'Università e del Politecnico di Bari I-70126 Bari Italy Istituto Nazionale di Fisica Nucleare Sezione di Bari I-70126 Bari Italy Laboratoire Leprince-Ringuet École polytechnique CNRS/IN2P3 F-91128 Palaiseau France Institut de Ciencies de l'Espai (IEEC-CSIC) Campus UAB E-08193 Barcelona Spain INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica I-20133 Milano Italy Space Science Division Naval Research Laboratory Washington DC 20375 USA George Mason University Fairfax VA 22030 USA Laboratoire de Physique Théorique et Astroparticules Université Montpellier 2 CNRS/IN2P3 F-34095 Montpellier France Department of Physics Stockholm University AlbaNova SE-106 91 Stockholm Sweden The Oskar Klein Centre for Cosmoparticle Physics AlbaNova SE-106 91 Stockholm Sweden Royal Swedish Academy of Sciences Research Fellow funded by a grant from the K. A. Wallenberg Founda

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M-Polar: Channel allocation for throughput maximization in SDR mesh networks

M-Polar: Channel allocation for throughput maximization in S...

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IEEE INFOCOM 2010

作者： Chai, Eugene Shin, Kang G. Real-Time Computing Laboratory Department of Electrical Engioneering and Computer Science University of Michigan Ann Arbor MI 48109-2121 United States

ISBN: (纸本)9781424458363

In traditional wireless networks, nodes use only a single channel per radio interface, thus limiting the overall channel diversity of the network. This restriction is due to the inherent limitations of commercially-available RF devices. With the advent of high-bandwidth software-defined radios (SDRs), we now have the option of assigning multiple contiguous, independent channels to a single wireless interface. This new-found opportunity raises an important question: how do we assign contiguous channels to nodes in order to maximize overall network throughput? This question lies at the often-ignored intersection of single-radio-multi-channel and multi-radio-multi-channel assignment schemes. In this paper, we develop a protocol that assigns contiguous channels with the goal of evenly spreading the load across the multiple channels. Neighboring nodes greedily adjust their channel ranges according to channel conditions to achieve an overall pattern of partially-overlapping bandwidths that maximizes the network throughput. The end-result is a network that can dynamically adapt its bandwidth usage to the network load and the conditions of the different channels. The proposed protocol is evaluated with a prototype built upon the USRP as well as with detailed simulation. ©2010 IEEE.

关键词： Bandwidth

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Dependable, efficient, scalable architecture for management of large-scale batteries 10

Dependable, efficient, scalable architecture for management ...

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1st ACM/IEEE International Conference on Cyber-Physical Systems, ICCPS 2010

作者： Kim, Hahnsang Shin, Kang G. Real-Time Computing Laboratory Department of Electrical Engineering and Computer Science University of Michigan Ann Arbor MI 48109-2121 United States

ISBN: (纸本)9781450300667

Conventional battery management systems (BMSs) for electric vehicles (EVs) are designed in an ad hoc way, causing the supply of EVs to fall behind the market demand. A well-designed and combined hardware-software architecture is essential for the management of a large-scale battery pack that consists of thousands of battery cells as in Tesla Motors and GM Chevy Volt. We propose a Dependable, Efficient, Scalable Architecture (DESA) that effectively monitors a large number of battery cells, efficiently controls and reconfigures, if needed, their connection arrangement. DESA is monarchy-based and supports hierarchical, autonomous management of battery cells, where a global BMS orchestrates a group of local BMSs. A local controller on each local BMS autonomously manages an array of battery cells, and the global controller reconfigures the connectivity of such battery-cell arrays in coordination with the local controllers. Configuration of a battery system is controlled by three types of switch - called P-, S-, and B-switches - and an algorithm that changes the setting of these switches. Our evaluation results show that DESA effectively tolerates battery-cell failures by order of magnitude - while achieving service cost savings 7.4 times - more than a conventional BMS. This superior performance not only extends the battery life signifcantly, but also provides the flexibility in supporting diverse electric power demands from a growing number of on-board applications. © 2010 ACM.

关键词： Software architecture

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ERRATUM: 'FERMI LARGE AREA TELESCOPE STUDY OF COSMIC-RAYS AND THE INTERSTELLAR MEDIUM IN NEARBY MOLECULAR CLOUDS' (2012, ApJ, 755, 22)

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The Astrophysical Journal 2013年第1期778卷

作者： M. Ackermann M. Ajello A. Allafort L. Baldini J. Ballet G. Barbiellini D. Bastieri K. Bechtol R. Bellazzini B. Berenji R. D. Blandford E. D. Bloom E. Bonamente A. W. Borgland E. Bottacini T. J. Brandt J. Bregeon M. Brigida P. Bruel R. Buehler G. Busetto S. Buson G. A. Caliandro R. A. Cameron P. A. Caraveo J. M. Casandjian C. Cecchi E. Charles A. Chekhtman J. Chiang S. Ciprini R. Claus J. Cohen-Tanugi J. Conrad F. D'Ammando A. de Angelis F. de Palma C. D. Dermer S. W. Digel E. do Couto e Silva P. S. Drell A. Drlica-Wagner L. Falletti C. Favuzzi S. J. Fegan E. C. Ferrara W. B. Focke Y. Fukazawa Y. Fukui S. Funk P. Fusco F. Gargano D. Gasparrini S. Germani N. Giglietto F. Giordano M. Giroletti T. Glanzman G. Godfrey I. A. Grenier M.-H. Grondin J. E. Grove S. Guiriec D. Hadasch Y. Hanabata A. K. Harding K. Hayashi D. Horan X. Hou R. E. Hughes R. Itoh M. S. Jackson G. Jóhannesson A. S. Johnson T. Kamae H. Katagiri J. Kataoka J. Knödlseder M. Kuss J. Lande S. Larsson S.-H. Lee M. Lemoine-Goumard F. Longo F. Loparco M. N. Lovellette P. Lubrano P. Martin M. N. Mazziotta J. E. McEnery J. Mehault P. F. Michelson W. Mitthumsiri T. Mizuno A. A. Moiseev C. Monte M. E. Monzani A. Morselli I. V. Moskalenko S. Murgia M. Naumann-Godo R. Nemmen S. Nishino J. P. Norris E. Nuss M. Ohno T. Ohsugi A. Okumura N. Omodei E. Orlando J. F. Ormes M. Ozaki D. Paneque J. H. Panetta D. Parent M. Pesce-Rollins M. Pierbattista F. Piron G. Pivato T. A. Porter S. Rainò R. Rando M. Razzano A. Reimer O. Reimer C. Romoli M. Roth T. Sada H. F.-W. Sadrozinski D. A. Sanchez C. Sbarra C. Sgrò E. J. Siskind G. Spandre P. Spinelli A. W. Strong D. J. Suson H. Takahashi T. Takahashi T. Tanaka J. G. Thayer J. B. Thayer D. J. Thompson L. Tibaldo O. Tibolla M. Tinivella D. F. Torres G. Tosti A. Tramacere E. Troja Y. Uchiyama T. Uehara T. L. Usher J. Vandenbroucke V. Vasileiou G. Vianello V. Vitale A. P. Waite P. Wang B. L. Winer K. S. Wood H. Yamamoto Z. Yang S. Zimmer Deutsches Elektronen Synchrotron DESY D-15738 Zeuthen Germany W. W. Hansen Experimental Physics Laboratory Kavli Institute for Particle Astrophysics and Cosmology Department of Physics and SLAC National Accelerator Laboratory Stanford University Stanford CA 94305 USA Istituto Nazionale di Fisica Nucleare Sezione di Pisa I-56127 Pisa Italy Laboratoire AIM CEA-IRFU/CNRS/Université Paris Diderot Service d'Astrophysique CEA Saclay 91191 Gif sur Yvette France Istituto Nazionale di Fisica Nucleare Sezione di Trieste I-34127 Trieste Italy Dipartimento di Fisica Università di Trieste I-34127 Trieste Italy Istituto Nazionale di Fisica Nucleare Sezione di Padova I-35131 Padova Italy Dipartimento di Fisica 'G. Galilei ' Università di Padova I-35131 Padova Italy Istituto Nazionale di Fisica Nucleare Sezione di Perugia I-06123 Perugia Italy Dipartimento di Fisica Università degli Studi di Perugia I-06123 Perugia Italy CNRS IRAP F-31028 Toulouse cedex 4 France GAHEC Université de Toulouse UPS-OMP IRAP Toulouse France Dipartimento di Fisica 'M. Merlin' dell'Università e del Politecnico di Bari I-70126 Bari Italy Istituto Nazionale di Fisica Nucleare Sezione di Bari 70126 Bari Italy Laboratoire Leprince-Ringuet École polytechnique CNRS/IN2P3 Palaiseau France Institut de Ciències de l'Espai (IEEE-CSIC) Campus UAB 08193 Barcelona Spain INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica I-20133 Milano Italy Center for Earth Observing and Space Research College of Science George Mason University Fairfax VA 22030 USA Resident at Naval Research Laboratory Washington DC 20375 USA. ASI Science Data Center I-00044 Frascati (Roma) Italy Laboratoire Univers et Particules de Montpellier Université Montpellier 2 CNRS/IN2P3 Montpellier France Department of Physics Stockholm University AlbaNova SE-106 91 Stockholm Sweden The Oskar Klein Centre for Cosmoparticle Physics AlbaNova SE-106 91 Stockholm Sweden Royal Swedish Academy of Sciences Research Fellow funded by

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Measurement of Separate Cosmic-Ray Electron and Positron Spectra with the Fermi Large Area Telescope

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Physical Review Letters 2012年第1期108卷 011103-011103页

作者： M. Ackermann M. Ajello A. Allafort W. B. Atwood L. Baldini G. Barbiellini D. Bastieri K. Bechtol R. Bellazzini B. Berenji R. D. Blandford E. D. Bloom E. Bonamente A. W. Borgland A. Bouvier J. Bregeon M. Brigida P. Bruel R. Buehler S. Buson G. A. Caliandro R. A. Cameron P. A. Caraveo J. M. Casandjian C. Cecchi E. Charles A. Chekhtman C. C. Cheung J. Chiang S. Ciprini R. Claus J. Cohen-Tanugi J. Conrad S. Cutini A. de Angelis F. de Palma C. D. Dermer S. W. Digel E. do Couto e Silva P. S. Drell A. Drlica-Wagner C. Favuzzi S. J. Fegan E. C. Ferrara W. B. Focke P. Fortin Y. Fukazawa S. Funk P. Fusco F. Gargano D. Gasparrini S. Germani N. Giglietto P. Giommi F. Giordano M. Giroletti T. Glanzman G. Godfrey I. A. Grenier J. E. Grove S. Guiriec M. Gustafsson D. Hadasch A. K. Harding M. Hayashida R. E. Hughes G. Jóhannesson A. S. Johnson T. Kamae H. Katagiri J. Kataoka J. Knödlseder M. Kuss J. Lande L. Latronico M. Lemoine-Goumard M. Llena Garde F. Longo F. Loparco M. N. Lovellette P. Lubrano G. M. Madejski M. N. Mazziotta J. E. McEnery P. F. Michelson W. Mitthumsiri T. Mizuno A. A. Moiseev C. Monte M. E. Monzani A. Morselli I. V. Moskalenko S. Murgia T. Nakamori P. L. Nolan J. P. Norris E. Nuss M. Ohno T. Ohsugi A. Okumura N. Omodei E. Orlando J. F. Ormes M. Ozaki D. Paneque D. Parent M. Pesce-Rollins M. Pierbattista F. Piron G. Pivato T. A. Porter S. Rainò R. Rando M. Razzano S. Razzaque A. Reimer O. Reimer T. Reposeur S. Ritz R. W. Romani M. Roth H. F.-W. Sadrozinski C. Sbarra T. L. Schalk C. Sgrò E. J. Siskind G. Spandre P. Spinelli A. W. Strong H. Takahashi T. Takahashi T. Tanaka J. G. Thayer J. B. Thayer L. Tibaldo M. Tinivella D. F. Torres G. Tosti E. Troja Y. Uchiyama T. L. Usher J. Vandenbroucke V. Vasileiou G. Vianello V. Vitale A. P. Waite B. L. Winer K. S. Wood M. Wood Z. Yang S. Zimmer Deutsches Elektronen Synchrotron DESY D-15738 Zeuthen Germany W. W. Hansen Experimental Physics Laboratory Kavli Institute for Particle Astrophysics and Cosmology Department of Physics and SLAC National Accelerator Laboratory Stanford University Stanford California 94305 USA Santa Cruz Institute for Particle Physics Department of Physics and Department of Astronomy and Astrophysics University of California at Santa Cruz Santa Cruz California 95064 USA Istituto Nazionale di Fisica Nucleare Sezione di Pisa I-56127 Pisa Italy Istituto Nazionale di Fisica Nucleare Sezione di Trieste I-34127 Trieste Italy Dipartimento di Fisica Università di Trieste I-34127 Trieste Italy Istituto Nazionale di Fisica Nucleare Sezione di Padova I-35131 Padova Italy Dipartimento di Fisica “G. Galilei” Università di Padova I-35131 Padova Italy Istituto Nazionale di Fisica Nucleare Sezione di Perugia I-06123 Perugia Italy Dipartimento di Fisica Università degli Studi di Perugia I-06123 Perugia Italy Dipartimento di Fisica “M. Merlin” dell’Università e del Politecnico di Bari I-70126 Bari Italy Istituto Nazionale di Fisica Nucleare Sezione di Bari 70126 Bari Italy Laboratoire Leprince-Ringuet École polytechnique CNRS/IN2P3 Palaiseau France Institut de Ciències de l’Espai (IEEE-CSIC) Campus UAB 08193 Barcelona Spain INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica I-20133 Milano Italy Laboratoire AIM CEA-IRFU/CNRS/Université Paris Diderot Service d’Astrophysique CEA Saclay 91191 Gif sur Yvette France Artep Inc. 2922 Excelsior Springs Court Ellicott City Maryland 21042 USA National Research Council Research Associate National Academy of Sciences Washington D.C. 20001 USA ASI Science Data Center I-00044 Frascati (Roma) Italy Laboratoire Univers et Particules de Montpellier Université Montpellier 2 CNRS/IN2P3 Montpellier France Department of Physics Stockholm University AlbaNova SE-106 91 Stockholm Sweden The Oskar Klein Centre for Cosmoparticle Physics AlbaNova SE-1

We measured separate cosmic-ray electron and positron spectra with the Fermi Large Area Telescope. Because the instrument does not have an onboard magnet, we distinguish the two species by exploiting Earth’s shadow, which is offset in opposite directions for opposite charges due to Earth’s magnetic field. We estimate and subtract the cosmic-ray proton background using two different methods that produce consistent results. We report the electron-only spectrum, the positron-only spectrum, and the positron fraction between 20 and 200 GeV. We confirm that the fraction rises with energy in the 20–100 GeV range. The three new spectral points between 100 and 200 GeV are consistent with a fraction that is continuing to rise with energy.

关键词： Positrons

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Anisotropies in the diffuse gamma-ray background measured by the Fermi LAT

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Physical Review D 2012年第8期85卷 083007-083007页

作者： M. Ackermann M. Ajello A. Albert L. Baldini J. Ballet G. Barbiellini D. Bastieri K. Bechtol R. Bellazzini E. D. Bloom E. Bonamente A. W. Borgland T. J. Brandt J. Bregeon M. Brigida P. Bruel R. Buehler S. Buson G. A. Caliandro R. A. Cameron P. A. Caraveo C. Cecchi E. Charles A. Chekhtman J. Chiang S. Ciprini R. Claus J. Cohen-Tanugi J. Conrad A. Cuoco S. Cutini F. D’Ammando F. de Palma C. D. Dermer S. W. Digel E. do Couto e Silva P. S. Drell A. Drlica-Wagner R. Dubois C. Favuzzi S. J. Fegan E. C. Ferrara P. Fortin Y. Fukazawa P. Fusco F. Gargano D. Gasparrini S. Germani N. Giglietto M. Giroletti T. Glanzman G. Godfrey G. A. Gomez-Vargas T. Grégoire I. A. Grenier J. E. Grove S. Guiriec M. Gustafsson D. Hadasch M. Hayashida K. Hayashi X. Hou R. E. Hughes G. Jóhannesson A. S. Johnson T. Kamae J. Knödlseder M. Kuss J. Lande L. Latronico M. Lemoine-Goumard T. Linden A. M. Lionetto M. Llena Garde F. Longo F. Loparco M. N. Lovellette P. Lubrano M. N. Mazziotta J. E. McEnery W. Mitthumsiri T. Mizuno C. Monte M. E. Monzani A. Morselli I. V. Moskalenko S. Murgia M. Naumann-Godo J. P. Norris E. Nuss T. Ohsugi A. Okumura M. Orienti E. Orlando J. F. Ormes D. Paneque J. H. Panetta D. Parent V. Pavlidou M. Pesce-Rollins M. Pierbattista F. Piron G. Pivato S. Rainò R. Rando A. Reimer O. Reimer M. Roth C. Sbarra J. Schmitt C. Sgrò J. Siegal-Gaskins E. J. Siskind G. Spandre P. Spinelli A. W. Strong D. J. Suson H. Takahashi T. Tanaka J. B. Thayer L. Tibaldo M. Tinivella D. F. Torres G. Tosti E. Troja T. L. Usher J. Vandenbroucke V. Vasileiou G. Vianello V. Vitale A. P. Waite B. L. Winer K. S. Wood M. Wood Z. Yang S. Zimmer E. Komatsu Deutsches Elektronen Synchrotron DESY D-15738 Zeuthen Germany W. W. Hansen Experimental Physics Laboratory Kavli Institute for Particle Astrophysics and Cosmology Department of Physics and SLAC National Accelerator Laboratory Stanford University Stanford California 94305 USA Department of Physics Center for Cosmology and Astro-Particle Physics The Ohio State University Columbus Ohio 43210 USA Istituto Nazionale di Fisica Nucleare Sezione di Pisa I-56127 Pisa Italy Laboratoire AIM CEA-IRFU/CNRS/Université Paris Diderot Service d’Astrophysique CEA Saclay 91191 Gif sur Yvette France Istituto Nazionale di Fisica Nucleare Sezione di Trieste I-34127 Trieste Italy Dipartimento di Fisica Università di Trieste I-34127 Trieste Italy Istituto Nazionale di Fisica Nucleare Sezione di Padova I-35131 Padova Italy Dipartimento di Fisica “G. Galilei ” Università di Padova I-35131 Padova Italy Istituto Nazionale di Fisica Nucleare Sezione di Perugia I-06123 Perugia Italy Dipartimento di Fisica Università degli Studi di Perugia I-06123 Perugia Italy CNRS IRAP F-31028 Toulouse cedex 4 France GAHEC Université de Toulouse UPS-OMP IRAP Toulouse France Dipartimento di Fisica “M. Merlin” dell’Università e del Politecnico di Bari I-70126 Bari Italy Istituto Nazionale di Fisica Nucleare Sezione di Bari 70126 Bari Italy Laboratoire Leprince-Ringuet École polytechnique CNRS/IN2P3 Palaiseau France Institut de Ciències de l’Espai (IEEE-CSIC) Campus UAB 08193 Barcelona Spain INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica I-20133 Milano Italy Space Science Division Naval Research Laboratory Washington D.C. 20375 USA and George Mason University Fairfax Virginia 22030 USA ASI Science Data Center I-00044 Frascati (Roma) Italy Laboratoire Univers et Particules de Montpellier Université Montpellier 2 CNRS/IN2P3 Montpellier France Department of Physics Stockholm University AlbaNova SE-106 91 Stockholm Sweden The Oskar Klein Centre for Cosmoparticle Physics AlbaNova

The contribution of unresolved sources to the diffuse gamma-ray background could induce anisotropies in this emission on small angular scales. We analyze the angular power spectrum of the diffuse emission measured by the Fermi Large Area Telescope at Galactic latitudes |b|>30° in four energy bins spanning 1–50 GeV. At multipoles ℓ≥155, corresponding to angular scales ≲2°, angular power above the photon noise level is detected at >99.99% confidence level in the 1–2 GeV, 2–5 GeV, and 5–10 GeV energy bins, and at >99% confidence level at 10–50 GeV. Within each energy bin the measured angular power takes approximately the same value at all multipoles ℓ≥155, suggesting that it originates from the contribution of one or more unclustered source populations. The amplitude of the angular power normalized to the mean intensity in each energy bin is consistent with a constant value at all energies, CP/⟨I⟩2=9.05±0.84×10−6 sr, while the energy dependence of CP is consistent with the anisotropy arising from one or more source populations with power-law photon spectra with spectral index Γs=2.40±0.07. We discuss the implications of the measured angular power for gamma-ray source populations that may provide a contribution to the diffuse gamma-ray background.

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Model-based analysis, synthesis and testing of automotive hardware/software architectures

Model-based analysis, synthesis and testing of automotive ha...

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6th Embedded Systems Week 2010, ESWEEK 2010 - 10th ACM International Conference on Compilers, Architecture and Synthesis for Embedded Systems, EMSOFT'10

作者： Chakraborty, Samarjit Ramesh, S. Teich, Jürgen Institute for Real-Time Computer Systems TU Munich Germany India Science Laboratory General Motors R and D India Department of Computer Science University of Erlangen-Nuremberg Germany

ISBN: (纸本)9781605589046

This tutorial is concerned with various aspects of model-based design of hardware/software architectures of automotive systems. It will be split into three parts, the first dealing with model-based analysis of automotive ECU networks, the second with synthesis of schedules for such networks, and finally the third with model-based testing of such architectures.

关键词： Model checking

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Fermi LAT search for dark matter in gamma-ray lines and the inclusive photon spectrum

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Physical Review D 2012年第2期86卷 022002-022002页

作者： M. Ackermann M. Ajello A. Albert L. Baldini G. Barbiellini K. Bechtol R. Bellazzini B. Berenji R. D. Blandford E. D. Bloom E. Bonamente A. W. Borgland M. Brigida R. Buehler S. Buson G. A. Caliandro R. A. Cameron P. A. Caraveo J. M. Casandjian C. Cecchi E. Charles A. Chekhtman J. Chiang S. Ciprini R. Claus J. Cohen-Tanugi J. Conrad F. D’Ammando F. de Palma C. D. Dermer E. do Couto e Silva P. S. Drell A. Drlica-Wagner Y. Edmonds R. Essig C. Favuzzi S. J. Fegan W. B. Focke Y. Fukazawa S. Funk P. Fusco F. Gargano D. Gasparrini S. Germani N. Giglietto F. Giordano M. Giroletti T. Glanzman G. Godfrey I. A. Grenier S. Guiriec M. Gustafsson D. Hadasch M. Hayashida D. Horan R. E. Hughes T. Kamae J. Knödlseder M. Kuss J. Lande A. M. Lionetto M. Llena Garde F. Longo F. Loparco M. N. Lovellette P. Lubrano M. N. Mazziotta P. F. Michelson W. Mitthumsiri T. Mizuno A. A. Moiseev C. Monte M. E. Monzani A. Morselli I. V. Moskalenko S. Murgia M. Naumann-Godo J. P. Norris E. Nuss T. Ohsugi A. Okumura E. Orlando J. F. Ormes D. Paneque J. H. Panetta M. Pesce-Rollins F. Piron G. Pivato T. A. Porter D. Prokhorov S. Rainò R. Rando M. Razzano O. Reimer M. Roth C. Sbarra J. D. Scargle C. Sgrò E. J. Siskind A. Snyder P. Spinelli D. J. Suson H. Takahashi T. Tanaka J. G. Thayer J. B. Thayer L. Tibaldo M. Tinivella D. F. Torres G. Tosti E. Troja J. Vandenbroucke V. Vasileiou G. Vianello V. Vitale A. P. Waite B. L. Winer K. S. Wood Z. Yang S. Zimmer Deutsches Elektronen Synchrotron DESY D-15738 Zeuthen Germany W. W. Hansen Experimental Physics Laboratory Kavli Institute for Particle Astrophysics and Cosmology Department of Physics and SLAC National Accelerator Laboratory Stanford University Stanford California 94305 USA Department of Physics Center for Cosmology and Astro-Particle Physics The Ohio State University Columbus Ohio 43210 USA Istituto Nazionale di Fisica Nucleare Sezione di Pisa I-56127 Pisa Italy Istituto Nazionale di Fisica Nucleare Sezione di Trieste I-34127 Trieste Italy Dipartimento di Fisica Università di Trieste I-34127 Trieste Italy Istituto Nazionale di Fisica Nucleare Sezione di Perugia I-06123 Perugia Italy Dipartimento di Fisica Università degli Studi di Perugia I-06123 Perugia Italy Dipartimento di Fisica “M. Merlin” dell’Università e del Politecnico di Bari I-70126 Bari Italy Istituto Nazionale di Fisica Nucleare Sezione di Bari 70126 Bari Italy Istituto Nazionale di Fisica Nucleare Sezione di Padova I-35131 Padova Italy Dipartimento di Fisica “G. Galilei” Università di Padova I-35131 Padova Italy Institut de Ciències de l’Espai (IEEE-CSIC) Campus UAB 08193 Barcelona Spain INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica I-20133 Milano Italy Laboratoire AIM CEA-IRFU/CNRS/Université Paris Diderot Service d’Astrophysique CEA Saclay 91191 Gif sur Yvette France Artep Inc. 2922 Excelsior Springs Court Ellicott City Maryland 21042 USAresident at Naval Research Laboratory Washington D.C. 20375 USA ASI Science Data Center I-00044 Frascati (Roma) Italy Laboratoire Univers et Particules de Montpellier Université Montpellier 2 CNRS/IN2P3 Montpellier France Department of Physics Stockholm University AlbaNova SE-106 91 Stockholm Sweden The Oskar Klein Centre for Cosmoparticle Physics AlbaNova SE-106 91 Stockholm Sweden IASF Palermo 90146 Palermo Italy INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica I-00133 Roma Italy Space Science Division Naval Research Labor

Dark matter particle annihilation or decay can produce monochromatic gamma-ray lines and contribute to the diffuse gamma-ray background. Flux upper limits are presented for gamma-ray spectral lines from 7 to 200 GeV and for the diffuse gamma-ray background from 4.8 GeV to 264 GeV obtained from two years of Fermi Large Area Telescope data integrated over most of the sky. We give cross-section upper limits and decay lifetime lower limits for dark matter models that produce gamma-ray lines or contribute to the diffuse spectrum, including models proposed as explanations of the PAMELA and Fermi cosmic-ray data.

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STLF using neural networks and fuzzy for anomalous load scenarios - A case study for Hajj

STLF using neural networks and fuzzy for anomalous load scen...

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6th International Conference on Electrical and computer Engineering, ICECE 2010

作者： Ahmmed, Suman Khan, Mohammad Asif Ashraf Hasan, Md. Khairul Saber, Ahmed Yousuf Huda, Mohammad Nurul Rahman, Mohammad Zahidur Department of Computer Science and Engineering United International University Dhaka Bangladesh Department of Computer Science and Engineering Ahsanullah University of Science and Technology Bangladesh Real-Time Power and Intelligent Systems Laboratory Missouri University of Science and Technology United States Department of Computer Science and Engineering Jahangirnagar University Savar Dhaka Bangladesh

ISBN: (纸本)9781424462797

Load Forecasting has an important role in load generation, scheduling, planning etc. in power system. Different computational intelligent techniques are used in Short Term Load Forecasting (STLF) to make it more effective. Neural Networks (NN) is an effective mapping algorithm that can map complex input-output relationships, which is an important technique to do STLF having existing dataset. Usually a proper NN is sufficient to achieve accepted level of performance. But different load dataset may bear some irregular nature of load demand scenario due to having special events, where accuracy of NN suffers significantly. To enhance the performance for those situations, the authors propose a hybrid STLF approach-Neural Networks and Fuzzy (NNF) method. The authors first try to select the best possible trained NN and do STLF. Considering historical data trend and of existing errors of NN solution, for those special days, NNF determine the Load Change trend. Fuzzy Inference Rules (FIR) have been developed to further improvement by fuzzy method. In fuzzy part the NNF apply FIR on two inputs: STLF of NN and Load Change trend, to enhance the performance of STLF for special events. To evaluate the proposed method it is applied on the dataset of Regional Power Control Center of Saudi Electricity Company, Western Operation Area (SEC-WOA). Since the authors deal with the daily load dataset of Saudia Arabia of Hijri years (Arabian years), Hajj has been chosen as one of the anomalous load scenario. Empirical results show that for Hajj event of Hijri 1428 year, the accuracy of STLF by NN is approximately 6.37%, whereas proposed NNF can decline the error at only 1.92%. ©2010 IEEE.

关键词： Fuzzy inference

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