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arXiv 2017年

作者： Manzotti, A. Story, K.T. Wu, W.L.K. Austermann, J.E. Beall, J.A. Bender, A.N. Benson, B.A. Bleem, L.E. Bock, J.J. Carlstrom, J.E. Chang, C.L. Chiang, H.C. Cho, H.-M. Citron, R. Conley, A. Crawford, T.M. Crites, A.T. de Haan, T. Dobbs, M.A. Dodelson, S. Everett, W. Gallicchio, J. George, E.M. Gilbert, A. Halverson, N.W. Harrington, N. Henning, J.W. Hilton, G.C. Holder, G.P. Holzapfel, W.L. Hoover, S. Hou, Z. Hrubes, J.D. Huang, N. Hubmayr, J. Irwin, K.D. Keisler, R. Knox, L. Lee, A.T. Leitch, E.M. Li, D. McMahon, J.J. Meyer, S.S. Mocanu, L.M. Natoli, T. Nibarger, J.P. Novosad, V. Padin, S. Pryke, C. Reichardt, C.L. Ruhl, J.E. Saliwanchik, B.R. Sayre, J.T. Schaffer, K.K. Smecher, G. Stark, A.A. Vanderlinde, K. Vieira, J.D. Viero, M.P. Wang, G. Whitehorn, N. Yefremenko, V. Zemcov, M. Kavli Institute for Cosmological Physics University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States Department of Astronomy and Astrophysics University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States Kavli Institute for Particle Astrophysics and Cosmology Stanford University 452 Lomita Mall StanfordCA94305 United States Dept. of Physics Stanford University 382 Via Pueblo Mall StanfordCA94305 United States Department of Physics University of California BerkeleyCA94720 United States NIST Quantum Devices Group 325 Broadway Mailcode 817.03 BoulderCO80305 United States High Energy Physics Division Argonne National Laboratory 9700 S. Cass Avenue ArgonneIL60439 United States Fermi National Accelerator Laboratory MS209 P.O. Box 500 BataviaIL60510 United States California Institute of Technology MS 367-17 1200 E. California Blvd. PasadenaCA91125 United States Jet Propulsion Laboratory PasadenaCA91109 United States Department of Physics University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States Enrico Fermi Institute University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States School of Mathematics Statistics & Computer Science University of KwaZulu-Natal Durban South Africa SLAC National Accelerator Laboratory 2575 Sand Hill Road Menlo ParkCA94025 United States Department of Physics McGill University 3600 Rue University MontrealQCH3A 2T8 Canada Canadian Institute for Advanced Research CIFAR Program in Cosmology and Gravity TorontoONM5G 1Z8 Canada Department of Astrophysical and Planetary Sciences University of Colorado BoulderCO80309 United States Harvey Mudd College 301 Platt Blvd. ClaremontCA91711 United States Department of Physics University of Colorado BoulderCO80309 United States Astronomy Department University of Illinois at Urbana-Champaign 1002 W. Green Street UrbanaIL61801 United States Department of Physics University of Illinois Urbana-Champ

We present a demonstration of delensing the observed cosmic microwave background (CMB) B-mode polarization anisotropy. This process of reducing the gravitational-lensing generated B-mode component will become increasingly important for improving searches for the B modes produced by primordial gravitational waves. In this work, we delens B-mode maps constructed from multi-frequency SPTpol observations of a 90 deg2 patch of sky by subtracting a B-mode template constructed from two inputs: SPTpol E-mode maps and a lensing potential map estimated from the Herschel 500 µm map of the CIB. We find that our delensing procedure reduces the measured B-mode power spectrum by 28% in the multipole range 300 Copyright © 2017, The Authors. All rights reserved.

关键词： Cosmology

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Principles of high–fidelity, high–density 3–d neural recording

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BMC Neuroscience 2014年第1期15卷 1-2页

作者： Caroline Moore-Kochlacs Nancy Kopell Justin P Kinney Ed S Boyden Jorg Scholvin Jacob G Bernstein Scott K Arfin Young Gyu Yoon Graduate Program for Neuroscience Boston University Boston MA 02215 USA McGovern Institute Massachusetts Institute of Technology MA 02139 USA Department of Mathematics and Statistics Boston University Boston MA 02215 USA Media Lab Massachusetts Institute of Technology MA 02139 USA Brain and Cognitive Science Massachusetts Institute of Technology MA 02139 USA Biological Engineering Massachusetts Institute of Technology MA 02139 USA Electrical Engineering and Computer Science Massachusetts Institute of Technology MA 02139 USA

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Measurements of the temperature and E-mode polarization of the cmb from 500 square degrees of sptpol data

arXiv

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arXiv 2017年

作者： Henning, J.W. Sayre, J.T. Reichardt, C.L. Ade, P.A.R. Anderson, A.J. Austermann, J.E. Beall, J.A. Bender, A.N. Benson, B.A. Bleem, L.E. Carlstrom, J.E. Chang, C.L. Chiang, H.C. Cho, H.-M. Citron, R. Corbett Moran, C. Crawford, T.M. Crites, A.T. de Haan, T. Dobbs, M.A. Everett, W. Gallicchio, J. George, E.M. Gilbert, A. Halverson, N.W. Harrington, N. Hilton, G.C. Holder, G.P. Holzapfel, W.L. Hoover, S. Hou, Z. Hrubes, J.D. Huang, N. Hubmayr, J. Irwin, K.D. Keisler, R. Knox, L. Lee, A.T. Leitch, E.M. Li, D. Lowitz, A. Manzotti, A. McMahon, J.J. Meyer, S.S. Mocanu, L. Montgomery, J. Nadolski, A. Natoli, T. Nibarger, J.P. Novosad, V. Padin, S. Pryke, C. Ruhl, J.E. Saliwanchik, B.R. Schaffer, K.K. Sievers, C. Smecher, G. Stark, A.A. Story, K.T. Tucker, C. Vanderlinde, K. Veach, T. Vieira, J.D. Wang, G. Whitehorn, N. Wu, W.L.K. Yefremenko, V. Kavli Institute for Cosmological Physics University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States Department of Astronomy and Astrophysics University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States Center for Astrophysics and Space Astronomy Department of Astrophysical and Planetary Sciences University of Colorado BoulderCO80309 United States School of Physics University of Melbourne ParkvilleVIC3010 Australia School of Physics and Astronomy Cardiff University CF24 3AA United Kingdom Fermi National Accelerator Laboratory MS209 P.O. Box 500 BataviaIL60510 United States NIST Quantum Sensors Group 325 Broadway Mailcode 687.08 BoulderCO80305 United States High Energy Physics Division Argonne National Laboratory 9700 S. Cass Avenue ArgonneIL60439 United States Department of Physics University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States Enrico Fermi Institute University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States School of Mathematics Statistics & Computer Science University of KwaZulu-Natal Durban South Africa SLAC National Accelerator Laboratory 2575 Sand Hill Road Menlo ParkCA94025 United States TAPIR Walter Burke Institute for Theoretical Physics California Institute of Technology 1200 E California Blvd PasadenaCA91125 United States California Institute of Technology MS 249-17 1216 E. California Blvd. PasadenaCA91125 United States Department of Physics University of California BerkeleyCA94720 United States Department of Physics McGill University 3600 Rue University MontrealQCH3A 2T8 Canada Canadian Institute for Advanced Research CIFAR Program in Cosmology and Gravity TorontoONM5G 1Z8 Canada Harvey Mudd College 301 Platt Blvd. ClaremontCA91711 United States European Southern Observatory Karl-Schwarzschild-Str. 2 Garching85748 Germany Department of Physics University of Colorado BoulderCO80309 United States Astronomy Department University

We present measurements of the E-mode polarization angular auto-power spectrum (EE) and temperature-E-mode cross-power spectrum (TE) of the cosmic microwave background (CMB) using 150 GHz data from three seasons of SPTpol observations. We report the power spectra over the spherical harmonic multipole range 50 1050 and ` > 1475, respectively. The observations cover 500 deg2, a fivefold increase in area compared to previous SPTpol analyses, which increases our sensitivity to the photon diffusion damping tail of the CMB power spectra enabling tighter constraints on ΛCDM model extensions. After masking all sources with unpolarized flux > 50 mJy we place a 95% confidence upper limit on residual polarized point-source power of D` = `(` + 1)C`/2π 2 at ` = 3000, suggesting that the EE damping tail dominates foregrounds to at least ` = 4050 with modest source masking. We find that the SPTpol dataset is in mild tension with the ΛCDM model (2.1 σ), and different data splits prefer parameter values that differ at the ∼ 1 σ level. When fitting SPTpol data at ` 1000 results in a preference for a higher value of the expansion rate (H0 = 71.3 ± 2.1 km s−1Mpc−1 ) and a lower value for present-day density fluctuations (σ8 = 0.77 ± 0.02). Copyright © 2017, The Authors. All rights reserved.

关键词： Power spectrum

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Provenance traces of the swift parallel scripting system 13

Provenance traces of the swift parallel scripting system

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Joint EDBT/ICDT 2013 Workshops

作者： Gadelha Jr., Luiz M. R. Wilde, Michael Mattoso, Marta Foster, Ian National Laboratory for Scientific Computing Brazil Mathematics and Computer Science Division Argonne National Laboratory United States Computation Institute Argonne National Laboratory University of Chicago United States Computer and Systems Engineering Program Federal University of Rio de Janeiro Brazil Department of Computer Science University of Chicago United States

ISBN: (纸本)9781450315999

In this abstract, we describe provenance traces generated from executions of scientific workflows managed by the Swift parallel scripting system. They follow a provenance data model, used by MTCProv, the provenance management component of Swift. It is similar to PROV, representing most of its core concepts and including additional information about the scientific domain, computational resource consumption, and prospective provenance. We describe provenance queries that follow patterns commonly found in high performance computing and that are straightforward to support with MTCProv's built-in procedures. These queries often involve costly relational join operations and recursion, providing a relevant case for benchmarking. © 2013 Authors.

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Multiscale, dictionary-based speckle denoising

Multiscale, dictionary-based speckle denoising

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Computational Optical Sensing and Imaging, COSI 2013

作者： Krishnamurthy, Kalyani Mrozack, Alex Maggioni, Mauro Brady, David Duke Imaging and Spectroscopy Program Department of Electrical and Computer Engineering Duke University Box 90291 Durham NC 27708 United States Departments of Mathematics and Computer Science Duke University Box 90320 Durham NC 27708 United States

We propose a multiscale, dictionary-based, data-adaptive estimation method to recover intensities from multiplicative, speckle data. The proposed method preserves the edges and textures in the underlying image while s... 详细信息

ISBN: (纸本)9781557529756

关键词： Speckle

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An independent set approach for the communication network of the GPS III system

An independent set approach for the communication network of...

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作者： Brinkmann, Gunnar Crevals, Simon Frye, John Applied Mathematics and Computer Science Ghent University Krijgslaan 281 S9 9000 Ghent Belgium Lockheed Martin GPS III Program 100 Campus Drive Newtown PA 18940 United States

In this article, we describe an algorithm to find the optimal communication network for the new GPS III satellite system. Finding a possible network will be translated to a maximum clique problem and an efficient algorithm for finding all maximum cliques under these special circumstances is described. © 2011 Elsevier B.V. All rights reserved.

关键词： Network security

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Self-assembly of skyrmion-dressed chiral nematic colloids with tangential anchoring

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Physical Review E 2014年第6期89卷 060502(R)-060502(R)页

作者： M. B. Pandey T. Porenta J. Brewer A. Burkart S. Čopar S. Žumer Ivan I. Smalyukh Department of Physics and Liquid Crystal Materials Research Center University of Colorado Boulder Colorado 80309 USA Department of Physics VSSD College Kanpur 208 002 India Faculty of Mathematics and Physics University of Ljubljana Jadranska 19 1000 Ljubljana Slovenia Jozef Stefan Institute Jamova 39 1000 Ljubljana Slovenia Department of Electrical Computer and Energy Engineering and Materials Science and Engineering Program University of Colorado Boulder Colorado 80309 USA Renewable and Sustainable Energy Institute National Renewable Energy Laboratory and University of Colorado Boulder Colorado 80309 USA

We describe dipolar nematic colloids comprising mutually bound solid microspheres, three-dimensional skyrmions, and point defects in a molecular alignment field of chiral nematic liquid crystals. Nonlinear optical imaging and numerical modeling based on minimization of Landau–de Gennes free energy reveal that the particle-induced skyrmions resemble torons and hopfions, while matching surface boundary conditions at the interfaces of liquid crystal and colloidal spheres. Laser tweezers and videomicroscopy reveal that the skyrmion-colloidal hybrids exhibit purely repulsive elastic pair interactions in the case of parallel dipoles and an unexpected reversal of interaction forces from repulsive to attractive as the center-to-center distance decreases for antiparallel dipoles. The ensuing elastic self-assembly gives rise to colloidal chains of antiparallel dipoles with particles entangled by skyrmions.

关键词： Self assembly

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Iterated contraction based on indistinguishability

Iterated contraction based on indistinguishability

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International Symposium on Logical Foundations of computer science, LFCS 2013

作者： Georgatos, Konstantinos Department of Mathematics and Computer Science John Jay College City University of New York 524 West 59th Street New York NY 10019 United States Doctoral Program in Computer Science Graduate Center City University of New York 365 Fifth Avenue New York NY 10016 United States

ISBN: (纸本)9783642357213

We introduce a class of set-theoretic operators on a tolerance space that models the process of minimal belief contraction, and therefore a natural process of iterated contraction can be defined. We characterize the class of contraction operators and study the properties of the associated iterated belief contraction. © Springer-Verlag 2013.

关键词： Artificial intelligence

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11th German Conference on Chemoinformatics (GCC 2015) Abstracts

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JOURNAL OF CHEMINFORMATICS 2016年第SUPPL 1期8卷 1-27页

作者： [Anonymous] GDCh-CIC Division Associated Board Member Beilstein-Institut zur Förderung der Chemischen Wissenschaften Trakehner Str. 7-9 60487 Frankfurt Germany. ufechner@beilstein-institut.de. Division Medicinal Chemistry Amsterdam Institute for Molecules Medicines and Systems (AIMMS) VU University Amsterdam The Netherlands. Centre for Bioinformatics Uni Hamburg Bundesstr. 43 20146 Hamburg Germany. Sanofi-Aventis Deutschland GmbH 65926 Frankfurt am Main Germany. stefan.guessregen@***. Sanofi-Aventis Deutschland GmbH 65926 Frankfurt am Main Germany. GlaxoSmithKline Stevenage SG1 2NY UK. nicola.j.richmond@***. Discngine Paris 75011 France. Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Germany. marwin.segler@wwu.de. Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Germany. Bundeskriminalamt Wiesbaden Central Analytics II 65173 Wiesbaden Germany. Department of Chemistry and Biochemistry University of California Santa Barbara CA 93111 USA. shea@chem.ucsb.edu. Department of Chemistry and Biochemistry University of California Santa Barbara CA 93111 USA. Chemistry Department Ludwig-Maximilians-Universität München Butenandtstr. 7 81377 Munich Germany. Inorganic Chemistry and Center for Nanointegration University of Duisburg-Essen Essen Germany. CAM-D Technologies Essen Germany. Institute for Bioinformatics and Chemoinformatics Westphalian University of Applied Sciences Recklinghausen Germany. Institute for Bioinformatics and Chemoinformatics Westphalian University of Applied Sciences Recklinghausen Germany. achim.zielesny@w-hs.de. Leiden University Leiden Netherlands. j.fraaije@chem.leidenuniv.nl. Culgi BV Berlin Germany. Physikalische Chemie III TU Dortmund 44227 Dortmund Germany. stefan.kast@tu-dortmund.de. Centre for Molecular Informatics Department of Chemistry University of Cambridge Lensfield Road Cambridge CB2 1EW United Kingdom. kcb27@cam.ac.uk. Centre for Molecular Informatics Department of Chemistry

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Hardware-based parallel firefly algorithm for embedded applications

Hardware-based parallel firefly algorithm for embedded appli...

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2013 NASA/ESA Conference on Adaptive Hardware and Systems, AHS 2013

作者： Muñoz, Daniel M. Llanos, Carlos H. Dos Santos Coelho, Leandro Ayala-Rincón, Mauricio Electronics Engineering Graduate Program Faculty of Gama University of Brasilia Brasilia DF Brazil Department of Mechanical Engineering Automation and Control Group/GRACO University of Brasilia Brasilia DF Brazil Industrial and Systems Engineering Graduate Program LAS/PPGEPS Pontifical Catholic University of Parana Curitiba Parana Brazil Departments of Computer Science and Mathematics University of Brasilia Brasilia DF Brazil

ISBN: (纸本)9781467363839

The firefly algorithm (FA) is a new population-based metaheuristic bioinspired on the behavior of the flashing characteristics of fireflies. As a population-based algorithm, the FA suffers from large execution times specifically for embedded optimization problems with computational limitations. For reducing execution times we propose a hardware parallel architecture of the FA algorithm that facilitates the implementation in Field programmable Gate Arrays (FPGAs). In addition, this work proposes the application of the opposition-based learning (OBL) approach to the FA algorithm. The respective hardware implementation (HPOFA) was mapped into a Virtex5 FPGA device and numerical experiments using four well-known benchmark problems demonstrate that the opposition-based approach allows the FA algorithm to improve its functionality, preserving the swarm diversity and avoiding the premature convergence problem. Synthesis results point out that the HPOFA architecture is effectively mapped in hardware and is suitable for embedded applications. © 2013 IEEE.

关键词： Parallel architectures

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