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arXiv 2019年

作者： Akutsu, T. Ando, M. Arai, K. Arai, K. Arai, Y. Araki, S. Araya, A. Aritomi, N. Aso, Y. Bae, S. Bae, Y. Baiotti, L. Bajpai, R. Barton, M.A. Cannon, K. Capocasa, E. Chan, M. Chen, C. Chen, K. Chen, Y. Chu, H. Chu, Y.-K. Doi, K. Eguchi, S. Enomoto, Y. Flaminio, R. Fujii, Y. Fukunaga, M. Fukushima, M. Ge, G. Hagiwara, A. Haino, S. Hasegawa, K. Hayakawa, H. Hayama, K. Himemoto, Y. Hiranuma, Y. Hirata, N. Hirose, E. Hong, Z. Hsieh, B.H. Huang, G.-Z. Huang, P. Huang, Y. Ikenoue, B. Imam, S. Inayoshi, K. Inoue, Y. Ioka, K. Itoh, Y. Izumi, K. Jung, K. Jung, P. Kajita, T. Kamiizumi, M. Kanbara, S. Kanda, N. Kang, G. Kawaguchi, K. Kawai, N. Kawasaki, T. Kim, C. Kim, J.C. Kim, W.S. Kim, Y.-M. Kimura, N. Kita, N. Kitazawa, H. Kojima, Y. Kokeyama, K. Komori, K. Kong, A.K.H. Kotake, K. Kozakai, C. Kozu, R. Kumar, R. Kume, J. Kuo, C. Kuo, H.-S. Kuroyanagi, S. Kusayanagi, K. Kwak, K. Lee, H.K. Lee, H.W. Lee, R. Leonardi, M. Lin, L.C.-C. Lin, C.-Y. Lin, F.-L. Liu, G.C. Luo, L.-W. Marchio, M. Michimura, Y. Mio, N. Miyakawa, O. Miyamoto, A. Miyazaki, Y. Miyo, K. Miyoki, S. Morisaki, S. Moriwaki, Y. Musha, M. Nagano, K. Nagano, S. Nakamura, K. Nakano, H. Nakano, M. Nakashima, R. Narikawa, T. Negishi, R. Ni, W.-T. Nishizawa, A. Obuchi, Y. Ogaki, W. Oh, J.J. Oh, S.H. Ohashi, M. Ohishi, N. Ohkawa, M. Ohmae, N. Okutomi, K. Oohara, K. Ooi, C.P. Oshino, S. Pan, K. Pang, H. Park, J. Peña Arellano, F.E. Pinto, I. Sago, N. Saito, S. Saito, Y. Sakai, K. Sakai, Y. Sakuno, Y. Sato, S. Sato, T. Sawada, T. Sekiguchi, T. Sekiguchi, Y. Shibagaki, S. Shimizu, R. Shimoda, T. Shimode, K. Shinkai, H. Shishido, T. Shoda, A. Somiya, K. Son, E.J. Sotani, H. Sugimoto, R. Suzuki, T. Suzuki, T. Tagoshi, H. Takahashi, H. Takahashi, R. Takamori, A. Takano, S. Takeda, H. Takeda, M. Tanaka, H. Tanaka, K. Tanaka, K. Tanaka, T. Tanaka, T. Tanioka, S. San Martin, E.N. Tapia Mitaka City Tokyo181-8588 Japan Japan Department of Physics University of Tokyo Bunkyo-ku Tokyo113-0033 Japan University of Tokyo Bunkyo-ku Tokyo113-0033 Japan California Institute of Technology PasadenaCA91125 United States KAGRA Observatory University of Tokyo Kashiwa CityChiba277-8582 Japan Tsukuba CityIbaraki305-0801 Japan Earthquake Research Institute University of Tokyo Bunkyo-ku Tokyo113-0032 Japan Kamioka-cho Hida City Gifu506-1205 Japan Mitaka City Tokyo181-8588 Japan Yuseong-gu Daejeon34141 Korea Republic of National Institute for Mathematical Sciences Daejeon34047 Korea Republic of Department of Earth and Space Science Graduate School of Science Osaka University Toyonaka CityOsaka560-0043 Japan Tsukuba CityIbaraki305-0801 Japan Department of Applied Physics Fukuoka University Jonan Fukuoka CityFukuoka814-0180 Japan Department of Physics Tamkang University Danshui Dist. New Taipei City25137 Taiwan Department of Physics and Institute of Astronomy National Tsing Hua University Hsinchu30013 Taiwan Department of Physics Center for High Energy and High Field Physics National Central University Zhongli District Taoyuan City32001 Taiwan Institute of Physics Academia Sinica Nankang Taipei11529 Taiwan Department of Physics University of Toyama Toyama CityToyama930-8555 Japan Université Savoie Mont Blanc CNRS/IN2P3 AnnecyF-74941 France Department of Astronomy University of Tokyo Mitaka City Tokyo181-8588 Japan Chinese Academy of Sciences Xiaohongshan Wuhan430071 China Tsukuba CityIbaraki305-0801 Japan KAGRA Observatory University of Tokyo Kamioka-cho Hida City Gifu506-1205 Japan College of Industrial Technology Nihon University Narashino CityChiba275-8575 Japan Graduate School of Science and Technology Niigata University Nishi-ku Niigata City Niigata950-2181 Japan Department of Physics National Taiwan Normal University Taipei116 Taiwan University of Tokyo Kashiwa Ci

Modern ground-based gravitational wave (GW) detectors require a complex interferometer configuration with multiple coupled optical cavities. Since achieving the resonances of the arm cavities is the most challenging among the lock acquisition processes, the scheme called arm length stabilization (ALS) had been employed for lock acquisition of the arm cavities. We designed a new type of the ALS, which is compatible with the interferometers having long arms like the next generation GW detectors. The features of the new ALS are that the control configuration is simpler than those of previous ones and that it is not necessary to lay optical fibers for the ALS along the kilometer-long arms of the detector. Along with simulations of its noise performance, an experimental test of the new ALS was performed utilizing a single arm cavity of KAGRA. This paper presents the first results of the test where we demonstrated that lock acquisition of the arm cavity was achieved using the new ALS. We also demonstrated that the root mean square of residual noise was measured to be 8.2 Hz in units of frequency, which is smaller than the linewidth of the arm cavity and thus low enough to lock the full interferometer of KAGRA in a repeatable and reliable manner. Copyright © 2019, The Authors. All rights reserved.

关键词： Interferometers

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Author Correction: Proton acceleration in thermonuclear nova explosions revealed by gamma rays

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Nature Astronomy 2022年 760页

作者： V. A. Acciari J. Becerra González E. Colombo R. J. García López J. Herrera A. López-Oramas C. Maggio V. Moreno M. Nievas Rosillo J. Otero-Santos G. Vanzo M. Vazquez Acosta S. Ansoldi B. De Lotto A. Donini F. Longo D. Miceli M. Palatiello M. Persic L. A. Antonelli C. Bigongiari S. Covino V. D’Elia F. Dazzi A. Lamastra F. Leone S. Lombardi L. Maraschi L. Nava S. Paiano C. Righi F. G. Saturni A. Stamerra F. Tavecchio A. Tutone A. Biland S. Fukami M. Artero O. Blanch S. M. Colak M. Delfino J. Delgado E. Do Souto Espiñeira L. Fariña Alonso L. Jouvin D. Kerszberg M. Martínez A. Moralejo E. Moretti C. Nigro C. Priyadarshi J. Rico K. Asano D. Hadasch M. Hütten T. Inada Y. Iwamura Y. Kobayashi D. Mazin K. Noda Y. Ohtani T. Saito S. Sakurai J. Sitarek M. Strzys M. Takahashi R. Takeishi M. Teshima I. Vovk D. Baack H. Bökenkamp D. Elsaesser A. Fattorini L. Linhoff S. Mender W. Rhode K. Schmidt A. Babić Ž. Bošnjak S. Cikota A. Baquero J. A. Barrio J. L. Contreras M. V. Fonseca J. Hoang M. López-Moya A. Mas Aguilar T. Miener D. Morcuende P. Peñil U. Barres de Almeida B. Machado de Oliveira Fraga I. Batković M. Bernardos G. Busetto A. De Angelis M. Doro R. López-Coto M. Mallamaci M. Mariotti E. Prandini A. Spolon W. Bednarek P. Gliwny K. Ishio D. Sobczynska L. Bellizzi S. Menchiari J. M. Miranda R. Paoletti S. Truzzi S. Ventura C. Wunderlich E. Bernardini W. Bhattacharyya M. Garczarczyk K. Satalecka A. Arbet Engels A. Berti J. Besenrieder G. Ceribella Y. Chai G. D’Amico C. Fruck J. G. Green D. Green A. Hahn L. Heckmann R. Mirzoyan D. Paneque M. Pihet T. Schweizer D. Strom J. van Scherpenberg M. Will G. Bonnoli R. Carosi P. Da Vela P. G. Prada Moroni A. Rugliancich M. Cerruti E. Molina J. M. Paredes M. Ribó A. Chilingarian J. Cortina C. Delgado Mendez T. Hassan I. Jiménez Martínez A. Del Popolo D. Depaoli F. Di Pierro C. F. Vigorito L. Di Venere N. Giglietto F. Giordano S. Loporchio D. Dominis Prester M. Manganaro S. Mićanović L. Pavletić T. Terzić D. Dorner K. Mannheim B. Schleicher V. Fallah Ramazani J. Jormanainen E. Lindfors Instituto de Astrofísica de Canarias and Dpto. de Astrofísica Universidad de La Laguna La Laguna Tenerife Spain Departament de Física and CERES-IEEC Universitat Autònoma de Barcelona Bellaterra Spain Università di Udine and INFN Trieste Udine Italy International Center for Relativistic Astrophysics (ICRA) Rome Italy Dipartimento di Fisica Università di Trieste Trieste Italy Laboratoire d’Annecy de Physique des Particules (LAPP) CNRS-IN2P3 Annecy Cedex France INAF Trieste and Dept. of Physics and Astronomy University of Bologna Bologna Italy National Institute for Astrophysics (INAF) Rome Italy ETH Zürich Zürich Switzerland Institut de Física d’Altes Energies (IFAE) The Barcelona Institute of Science and Technology (BIST) Bellaterra Barcelona Spain Port d’Informació Científica (PIC) Bellaterra Barcelona Spain Japanese MAGIC Group: Institute for Cosmic Ray Research (ICRR) The University of Tokyo Kashiwa Chiba Japan Max-Planck-Institut für Physik München Germany Technische Universität Dortmund Dortmund Germany Croatian MAGIC Group: University of Zagreb Faculty of Electrical Engineering and Computing (FER) Zagreb Croatia IPARCOS Institute and EMFTEL Department Universidad Complutense de Madrid Madrid Spain Department of Astronomy University of California Berkeley Berkeley CA USA Centro Brasileiro de Pesquisas Físicas (CBPF) Rio de Janeiro RJ Brazil Università di Padova and INFN Padova Italy University of Lodz Faculty of Physics and Applied Informatics Department of Astrophysics Lodz Poland Università di Siena and INFN Pisa Siena Italy Deutsches Elektronen-Synchrotron (DESY) Zeuthen Germany Department for Physics and Technology University of Bergen Bergen Norway Instituto de Astrofísica de Andalucía-CSIC Glorieta de la Astronomía s/n Granada Spain Università di Pisa and INFN Pisa Pisa Italy University of Innsbruck Innsbruck Austria Universitat de Barcelona ICCUB IEEC-UB Barcelona Spain Armenian MAGIC Group: A. Alikhanyan National Science Labo

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Erratum to: Measurement of differential cross sections and W+/W− cross-section ratios for W boson production in association with jets at = 8 TeV with the ATLAS detector

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Journal of High Energy Physics 2020年第10期2020卷 1-20页

作者： Aaboud, M. Aad, G. Abbott, B. Abdinov, O. Abeloos, B. Abidi, S. H. AbouZeid, O. S. Abraham, N. L. Abramowicz, H. Abreu, H. Abreu, R. Abulaiti, Y. Acharya, B. S. Adachi, S. Adamczyk, L. Adelman, J. Adersberger, M. Adye, T. Affolder, A. A. Afik, Y. Agheorghiesei, C. Aguilar-Saavedra, J. A. Ahlen, S. P. Ahmadov, F. Aielli, G. Akatsuka, S. Akerstedt, H. Åkesson, T. P. A. Akilli, E. Akimov, A. V. Alberghi, G. L. Albert, J. Albicocco, P. Alconada Verzini, M. J. Alderweireldt, S. C. Aleksa, M. Aleksandrov, I. N. Alexa, C. Alexander, G. Alexopoulos, T. Alhroob, M. Ali, B. Aliev, M. Alimonti, G. Alison, J. Alkire, S. P. Allbrooke, B. M. M. Allen, B. W. Allport, P. P. Aloisio, A. Alonso, A. Alonso, F. Alpigiani, C. Alshehri, A. A. Alstaty, M. I. Alvarez Gonzalez, B. Álvarez Piqueras, D. Alviggi, M. G. Amadio, B. T. Amaral Coutinho, Y. Amelung, C. Amidei, D. Amor Dos Santos, S. P. Amoroso, S. Anastopoulos, C. Ancu, L. S. Andari, N. Andeen, T. Anders, C. F. Anders, J. K. Anderson, K. J. Andreazza, A. Andrei, V. Angelidakis, S. Angelozzi, I. Angerami, A. Anisenkov, A. V. Anjos, N. Annovi, A. Antel, C. Antonelli, M. Antonov, A. Antrim, D. J. Anulli, F. Aoki, M. Aperio Bella, L. Arabidze, G. Arai, Y. Araque, J. P. Araujo Ferraz, V. Arce, A. T. H. Ardell, R. E. Arduh, F. A. Arguin, J-F. Argyropoulos, S. Arik, M. Armbruster, A. J. Armitage, L. J. Arnaez, O. Arnold, H. Arratia, M. Arslan, O. Artamonov, A. Artoni, G. Artz, S. Asai, S. Asbah, N. Ashkenazi, A. Asquith, L. Assamagan, K. Astalos, R. Atkinson, M. Atlay, N. B. Augsten, K. Avolio, G. Axen, B. Ayoub, M. K. Azuelos, G. Baas, A. E. Baca, M. J. Bachacou, H. Bachas, K. Backes, M. Bagnaia, P. Bahmani, M. Bahrasemani, H. Baines, J. T. Bajic, M. Baker, O. K. Bakker, P. J. Baldin, E. M. Balek, P. Balli, F. Balunas, W. K. Banas, E. Bandyopadhyay, A. Banerjee, Sw. Bannoura, A. A. E. Barak, L. Barberio, E. L. Barberis, D. Barbero, M. Barillari, T. Barisits, M-S Barkeloo, J. T. Barklow, T. Barlow, N. Barnes, S. L. Barnett, B. M. Barnett, R. M. Barnovska-Blenessy, Z. Baroncelli, A. Bar Faculté des Sciences Université Mohamed Premier and LPTPM Oujda Morocco CPPM Aix-Marseille Université and CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman United States of America Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan LAL Univ. Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay France Department of Physics University of Toronto Toronto Canada Santa Cruz Institute for Particle Physics University of California Santa Cruz Santa Cruz United States of America Department of Physics and Astronomy University of Sussex Brighton United Kingdom Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel Department of Physics Technion: Israel Institute of Technology Haifa Israel Center for High Energy Physics University of Oregon Eugene United States of America Department of Physics Stockholm University Stockholm Sweden The Oskar Klein Centre Stockholm Sweden INFN Gruppo Collegato di Udine Sezione di Trieste Udine Italy ICTP Trieste Italy Department of Physics King’s College London London United Kingdom International Center for Elementary Particle Physics and Department of Physics The University of Tokyo Tokyo Japan AGH University of Science and Technology Faculty of Physics and Applied Computer Science Krakow Poland Department of Physics Northern Illinois University DeKalb United States of America Fakultät für Physik Ludwig-Maximilians-Universität München München Germany Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Department of Physics Alexandru Ioan Cuza University of Iasi Iasi Romania Laboratório de Instrumentação e Física Experimental de Partículas — LIP Lisboa Portugal Departamento de Fisica Teorica y del Cosmos Universidad de Granada Granada Portugal Department of Physics Boston University Boston United States of America Joint Institute for Nuclear Research JINR Dubna Dubna Russia IN

Two additions impacting tables 3 and 4 in ref. [1] are presented in the following. No significant impact is found for other results or figures in ref. [1].

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Ground penetrating radar hyperbola detection using Scale-Invariant Feature Transform

Ground penetrating radar hyperbola detection using Scale-Inv...

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International Conference on Electrical and Information Technologies (ICEIT)

作者： Houda Harkat Youssef Elfakir Saad Dosse Bennani Ghizlane Khaissidi Mostafa Mrabti Faculty of Science and Technology Laboratory Renewable Energy and Intelligent Systems (LERSI) Fez Morocco Laboratory of Computing and Interdisciplinary Physics (LIPI) Normal Superior School Fez Morocco National School of Applied Sciences Fez Laboratory Renewable Energy and Intelligent Systems Faculty of Science and Technology Morocco National School of Applied Sciences Fez Normal Superior School Fez Morocco

ISBN: (纸本)9781467384704

Ground-penetrating radar (GPR) is a geophysical method used for subsurface targets identification. However, a sophisticated processing of GPR data is necessary to extract targets signature. Traditionally, we use the Hough Transform to detect the hyperbolas caused by targets reflections. This one is very difficult in implementation because we deal with a three-dimensional parametric space. In fact, the Hough transform consume a huge execution time and gives random results. In a previous work, we proposed a modified Hough Transform algorithm, based on a pre-treatment phase of the B-Scans images, that give acceptable results but its a little time consuming. This paper proposes an application of one modern computer vision feature extraction technique, named Scale Invariant Feature Transform (SIFT), to hyperbola detection in GPR Bscans data. First, we will apply the SIFT algorithm to localize the hyperbolas regions, and then we apply the Hough transform on the detected regions. The results presented indicates that SIFT features provide a robust tool for target identification for both classification and prescreening.

关键词： Transforms Ground penetrating radar Feature extraction Information technology Shape Histograms Computer vision

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Semantic parsing of speech using grammars learned with weak supervision

Semantic parsing of speech using grammars learned with weak ...

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Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, NAACL HLT 2015

作者： Gaspers, Judith Cimiano, Philipp Wrede, Britta Semantic Computing Group CITEC Bielefeld University Germany Applied Informatics Faculty of Technology Bielefeld University Germany

ISBN: (纸本)9781941643495

Semantic grammars can be applied both as a language model for a speech recognizer and for semantic parsing, e.g. in order to map the output of a speech recognizer into formal meaning representations. Semantic speech recognition grammars are, however, typically created manually or learned in a supervised fashion, requiring extensive manual effort in both cases. Aiming to reduce this effort, in this paper we investigate the induction of semantic speech recognition grammars under weak supervision. We present empirical results, indicating that the induced grammars support semantic parsing of speech with a rather low loss in performance when compared to parsing of input without recognition errors. Further, we show improved parsing performance compared to applying n-gram models as language models and demonstrate how our semantic speech recognition grammars can be enhanced by weights based on occurrence frequencies, yielding an improvement in parsing performance over applying unweighted grammars. © 2015 Association for Computational Linguistics.

关键词： Semantics

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Novel edge detection scheme in the trinion space for use in medical images with multiple components

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2016年 9876 LNCS卷 231-241页

作者： Assefa, Dawit Krejcar, Ondrej Center of Biomedical Engineering Division of Biomedical Computing Addis Ababa Institute of Technology Addis Ababa University Addis Ababa Ethiopia Center for Basic and Applied Research Faculty of Informatics and Management University of Hradec Kralove Hradec Kralove Czech Republic

Very recently we proposed a promising scheme for tissue classification of multi-parametric magnetic resonance images (MP-MRI) of the brain based on signal analysis in higher dimensional vector spaces. The method treats MP-MR images as colors represented holistically in three (trinion) or four (quaternion) algebraic spaces. Compared to the well known quaternions, the recently proposed three component trinions are more efficient in representation of images with three channels and the respective Fourier transforms allow visualization of their wavenumber spectra as a whole. The current study discusses an edge detection scheme based on statistical metrics derived from locally computed trinion Fourier transforms for use in robust edge detection of MP-MR images and other color medical images. Performance of the proposed scheme is compared against a quaternion formulation and with another vectorial approach. Application of the method is shown in edge detection of various color test images and scenes with different degrees of difficulty. Discussion and preliminary results on the application of the proposed scheme on MP-MR images of brain scans of patients treated for glioblastoma multiforme (GBM) have also been included. © Springer International Publishing Switzerland 2016.

关键词： Color

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Spin-current-mediated rapid magnon localisation and coalescence after ultrafast optical pumping of ferrimagnetic alloys

arXiv

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arXiv 2018年

作者： Iacocca, E. Liu, T-M. Reid, A.H. Fu, Z. Ruta, S. Granitzka, P.W. Jal, E. Bonetti, S. Gray, A.X. Graves, C.E. Kukreja, R. Chen, Z. Higley, D.J. Chase, T. Le Guyader, L. Hirsch, K. Ohldag, H. Schlotter, W.F. Dakovski, G.L. Coslovich, G. Hoffmann, M.C. Carron, S. Tsukamoto, A. Savoini, M. Kirilyuk, A. Kimel, A.V. Rasing, T. Stöhr, J. Evans, R.F.L. Ostler, T. Chantrel, R.W. Hoefer, M.A. Silva, T.J. Dürr, H.A. Department of Applied Mathematics University of Colorado BoulderCO80309 United States National Institute of Standards and Technology BoulderCO80305 United States Department of Physics Division for Theoretical Physics Chalmers University of Technology Gothenburg412 96 Sweden SLAC National Accelerator Laboratory 2575 Sand Hill Road Menlo ParkCA94025 United States School of Physics Science and Engineering Tongji University Shanghai200092 China Department of Physics University of York YorkYO10 5DD United Kingdom Spectroscopy and Coherent Scattering European X-Ray Free-Electron Laser Facility GmbH Holzkoppel 4 Schenefeld22869 Germany Department of Electronics and Computer Science Nihon University 7-24-1 Narashino-dai Funabashi Chiba274-8501 Japan Radboud University Institute for Molecules and Materials Heyendaalseweg 135 AJ Nijmegen6525 Netherlands Université de Liège Physique des Matériaux et Nanostructures Liège Sart TilmanB-4000 Belgium Faculty of Arts Computing Engineering and Sciences Sheffield Hallam University Howard Street SheffieldS1 1WB United Kingdom Department of Physics and Astronomy Uppsala University Box 516 Uppsala751 20 Sweden

Sub-picosecond magnetisation manipulation via femtosecond optical pumping has attracted wide attention ever since its original discovery in 1996. However, the spatial evolution of the magnetisation is not yet well understood, n part due to the difficulty in experimentally probing such rapid dynamics. Here, we find evidence of rapid magnetic order recovery in materials with perpendicular magnetic anisotropy via nonlinear magnon processes. We identify both localisation and coalescence regimes, whereby localised magnetic textures nucleate and subsequently evolve in accordance with a power law formalism. Coalescence is observed for optical excitations both above and below the switching threshold. Simulations indicate that the ultrafast generation of noncollinear magnetisation via optical pumping establishes exchange-mediated spin currents with an equivalent 100% spin polarised charge current density of 108A/cm2. Such large spin currents precipitate rapid recovery of magnetic order after optical pumping. These processes suggest an ultrafast optical route for the stabilization of desired meta-stable states, e.g., solated skyrmions. Copyright © 2018, The Authors. All rights reserved.

关键词： Optical pumping

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NWChem: Past, present, and future

arXiv

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arXiv 2020年

作者： Aprà, E. Bylaska, E.J. de Jong, W.A. Govind, N. Kowalski, K. Straatsma, T.P. Valiev, M. van Dam, H.J.J. Alexeev, Y. Anchell, J. Anisimov, V. Aquino, F.W. Atta-Fynn, R. Autschbach, J. Bauman, N.P. Becca, J.C. Bernholdt, D.E. Bhaskaran-Nair, K. Bogatko, S. Borowski, P. Boschen, J. Brabec, J. Bruner, A. Cauët, E. Chen, Y. Chuev, G.N. Cramer, C.J. Daily, J. Deegan, M.J.O. Dunning, T.H. Dupuis, M. Dyall, K.G. Fann, G.I. Fischer, S.A. Fonari, A. Früchtl, H. Gagliardi, L. Garza, J. Gawande, N. Ghosh, S. Glaesemann, K. Götz, A.W. Hammond, J. Helms, V. Hermes, E.D. Hirao, K. Hirata, S. Jacquelin, M. Jensen, L. Johnson, B.G. Jónsson, H. Kendall, R.A. Klemm, M. Kobayashi, R. Konkov, V. Krishnamoorthy, S. Krishnan, M. Lin, Z. Lins, R.D. Littlefield, R.J. Logsdail, A.J. Lopata, K. Ma, W. Marenich, A.V. Martin del Campo, J. Mejia-Rodriguez, D. Moore, J.E. Mullin, J.M. Nakajima, T. Nascimento, D.R. Nichols, J.A. Nichols, P.J. Nieplocha, J. Otero-de-la-Roza, A. Palmer, B. Panyala, A. Pirojsirikul, T. Peng, B. Peverati, R. Pittner, J. Pollack, L. Richard, R.M. Sadayappan, P. Schatz, G.C. Shelton, W.A. Silverstein, D.W. Smith, D.M.A. Soares, T.A. Song, D. Swart, M. Taylor, H.L. Thomas, G.S. Tipparaju, V. Truhlar, D.G. Tsemekhman, K. van Voorhis, T. Vázquez-Mayagoitia, Á. Verma, P. Villa, O. Vishnu, A. Vogiatzis, K.D. Wang, D. Weare, J.H. Williamson, M.J. Windus, T.L. Woliński, K. Wong, A.T. Wu, Q. Yang, C. Yu, Q. Zacharias, M. Zhang, Z. Zhao, Y. Harrison, R.J. Pacific Northwest National Laboratory RichlandWA99352 United States Lawrence Berkeley National Laboratory BerkeleyCA94720 United States National Center for Computational Sciences Oak Ridge National Laboratory Oak RidgeTN37831 United States Brookhaven National Laboratory UptonNY11973 United States Argonne Leadership Computing Facility Argonne National Laboratory ArgonneIL60439 United States Intel Corporation Santa ClaraCA95054 United States QSimulate CambridgeMA02139 United States Department of Physics University of Texas at Arlington ArlingtonTX76019 United States Department of Chemistry University at Buffalo State University of New York BuffaloNY14260 United States Department of Chemistry Pennsylvania State University University ParkPA16802 United States Oak Ridge National Laboratory Oak RidgeTN37831 United States Washington University St. LouisMO63130 United States 4G Clinical WellesleyMA02481 United States Faculty of Chemistry Maria Curie-Sklodowska University in Lublin Lublin20-031 Poland Department of Chemistry Iowa State University AmesIA50011 United States J. Heyrovský Institute of Physical Chemistry Academy of Sciences of the Czech Republic Prague 818223 Czech Republic Department of Chemistry and Physics University of Tennessee at Martin MartinTN38238 United States Université libre de Bruxelles BrusselsB-1050 Belgium Facebook Menlo ParkCA94025 United States Institute of Theoretical and Experimental Biophysics Russian Academy of Science Pushchino Moscow142290 Russia Department of Chemistry Chemical Theory Center Supercomputing Institute University of Minnesota MinneapolisMN55455 United States SKAO Jodrell Bank Observatory MacclesfieldSK11 9DL United Kingdom Department of Chemistry University of Washington SeattleWA98195 United States Dirac Solutions PortlandOR97229 United States Chemistry Division U. S. Naval Research Laboratory WashingtonDC20375 United States School of Chemistry and Biochemis

Specialized computational chemistry packages have permanently reshaped the landscape of chemical and materials science by providing tools to support and guide experimental efforts and for the prediction of atomistic and electronic properties. In this regard, electronic structure packages have played a special role by using first-principle-driven methodologies to model complex chemical and materials processes. Over the last few decades, the rapid development of computing technologies and the tremendous increase in computational power have offered a unique chance to study complex transformations using sophisticated and predictive many-body techniques that describe correlated behavior of electrons in molecular and condensed phase systems at different levels of theory. In enabling these simulations, novel parallel algorithms have been able to take advantage of computational resources to address the polynomial scaling of electronic structure methods. In this paper, we briefly review the NWChem computational chemistry suite, including its history, design principles, parallel tools, current capabilities, outreach and outlook. Copyright © 2020, The Authors. All rights reserved.

关键词： Computational chemistry

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A genomic catalog of Earth's microbiomes (November, 10.1038/s41587-020-0718-6, 2020)

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NATURE BIOtechnology 2021年第4期39卷 520-520页

作者： Nayfach, Stephen Roux, Simon Seshadri, Rekha Udwary, Daniel Varghese, Neha Schulz, Frederik Wu, Dongying Paez-Espino, David Chen, I-Min Huntemann, Marcel Palaniappan, Krishna Ladau, Joshua Mukherjee, Supratim Reddy, T. B. K. Nielsen, Torben Kirton, Edward Faria, Jose P. Edirisinghe, Janaka N. Henry, Christopher S. Jungbluth, Sean P. Chivian, Dylan Dehal, Paramvir Wood-Charlson, Elisha M. Arkin, Adam P. Tringe, Susannah G. Visel, Axel Woyke, Tanja Mouncey, Nigel J. Ivanova, Natalia N. Kyrpides, Nikos C. Eloe-Fadrosh, Emiley A. DOE Joint Genome Institute Berkeley CA USA Argonne National Laboratory Argonne IL USA Lawrence Berkeley National Laboratory Berkeley CA USA Travessa Alexandre da Conceicao ALGAplus Ilhavo Portugal Department of Marine Biology and Oceanography Institute of Marine Sciences-CSIC Barcelona Spain Scripps Institution of Oceanography University of California San Diego La Jolla CA USA School of Biotechnology and Biomolecular Sciences UNSW Sydney Sydney New South Wales Australia Centre for Microbiology and Environmental Systems Science University of Vienna Vienna Austria Department of Environmental Science Aarhus University Roskilde Denmark Rumen Microbiology Animal Science AgResearch Grasslands Research Centre Palmerston North New Zealand Department of Biology Pennsylvania State University University Park Pennsylvania PA USA Scottish Association for Marine Science Oban UK Department of Earth and Environmental Sciences University of Minnesota Minneapolis MN USA Department of Marine Science University of Texas Austin Austin TX USA Institute of Microbiology of the Czech Academy of Sciences Praha 4 Czech Republic Department of Biology University of Akron Akron OH USA Department of Chemical Engineering & eScience Institute University of Washington Seattle WA USA Department of Biology University of North Alabama Florence AL USA Life and Environmental Sciences and Sierra Nevada Research Institute University of California Merced Merced CA USA Ecole Polytechnique Federale de Lausanne Lausanne Switzerland Department of Soil Science University of Wisconsin-Madison Madison WI USA School of Biological Sciences Georgia Institute of Technology Atlanta GA USA Department of Aquatic Sciences and Assessment Swedish University of Agricultural Sciences Uppsala Sweden Department of Biology Boston University Boston MA USA University of Arkansas for Medical Sciences Little Rock AR USA Biology Department University of Massachusetts Amherst Amherst MA USA

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

关键词： Computational biology and bioinformatics Microbiology

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Spectropolarimetry of galactic stars with anomalous extinction sightlines

arXiv

引用

arXiv 2018年

作者： Cikota, Aleksandar Hoang, Thiem Taubenberger, Stefan Patat, Ferdinando Mazzei, Paola Cox, Nick L.J. Zelaya, Paula Cikota, Stefan Tomasella, Lina Benetti, Stefano Rodeghiero, Gabriele European Southern Observatory Karl-Schwarzschild-Str. 2 Garching b. München85748 Germany Korea Astronomy and Space Science Institute Daejeon34055 Korea Republic of Korea University of Science and Technology 217 Gajungro Yuseong-gu Daejeon34113 Korea Republic of Max-Planck-Institut für Astrophysik Karl-Schwarzschild-Str. 1 Garching b. München85741 Germany INAF-Osservatorio Astronomico di Padova Vicolo dell'Osservatorio 5 PadovaI-35122 Italy Anton Pannekoek Institute for Astronomy University of Amsterdam AmsterdamNL-1090 GE Netherlands MAS-Millennium Institute of Astrophysics Casilla 36-D Santiago7591245 Chile Instituto de Astrofísica Pontificia Universidad Católica de Chile Casilla 306 Santiago 22 Chile University of Zagreb Faculty of Electrical Engineering and Computing Department of Applied Physics Unska 3 Zagreb10000 Croatia Ruder Bošković Institute Bijenička cesta 54 Zagreb10000 Croatia Max-Planck-Institut für Astronomie Königstuhl 17 HeidelbergD-69117 Germany

Highly reddened type Ia Supernovae (SNe Ia) with low total-to-selective visual extinction ratio values, RV, also show peculiar linear polarization wavelength dependencies with peak polarizations at short wavelengths (λmax 0.4μm). It is not clear why sightlines to SNe Ia display such different continuum polarization profiles from interstellar sightlines in the Milky Way with similar RVvalues. We investigate polarization profiles of a sample of Galactic stars with low RVvalues, along anomalous extinction sightlines, with the aim to find similarities to the polarization profiles that we observe in SN Ia sightlines. We undertook spectropolarimetry of 14 stars, and used archival data for three additional stars, and run dust extinction and polarization simulations (by adopting the picket-fence alignment model) to infer a simple dust model (size distribution, alignment) that can reproduce the observed extinction and polarization curves. Our sample of Galactic stars with low RVvalues and anomalous extinction sightlines displays normal polarization profiles with an average λmax∼ 0.53μm, and is consistent within 3σ to a larger coherent sample of Galactic stars from literature. Despite the low RVvalues of dust towards the stars in our sample, the polarization curves do not show any similarity to the continuum polarization curves observed towards SNe Ia with low RVvalues. There is a correlation between the best-fit Serkowski parameters K and λmax, but we did not find any significant correlation between RVand λmax. Our simulations show that the K-λmaxrelationship is an intrinsic property of polarization. Furthermore, we have shown that in order to reproduce polarization curves with normal λmaxand low RV values, a population of large (a ≥ 0.1μm) interstellar silicate grains must be contained in the dust's composition. Copyright © 2018, The Authors. All rights reserved.

关键词： Dust

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