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6th International Workshop on Mining Ubiquitous and Social Environments, MUSE 2015

作者： Atzmueller, Martin Kibanov, Mark Hayat, Naveed Trojahn, Matthias Kroll, Dennis University of Kassel Research Center for Information System Design Knowledge and Data Engineering Group Kassel Germany Volkswagen AG Wolfsburg Germany University of Kassel Research Center for Information System Design Department for Communication Technology Kassel Germany

The analysis of human activity data is an important research area in the context of ubiquitous and social environments. Using sensor data obtained by mobile devices, e. g., utilizing accelerometer sensors contained in mobile phones, behavioral patterns and models can then be obtained. However, the utilized models are often not simple to interpret by humans in order to facilitate assessment, evaluation and validation, e. g., in computational social science or in medical contexts. In this paper, we propose a novel approach for generating interpretable rule sets for classification: We present an adaptive framework for mining class association rules using subgroup discovery, and analyze different techniques for obtaining the final classifier. The approach is investigated in the context of human activity recognition. For our evaluation, we apply real-world activity data collected using mobile phone sensors. Copyright © 2015 by the paper's authors.

关键词： Cellular telephones

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26th Annual Computational Neuroscience Meeting (CNS*2017): Part 3 Antwerp, Belgium. 15-20 July 2017 Abstracts

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BMC NEUROSCIENCE 2017年第SUPPL 1期18卷 95-176页

作者： [Anonymous] Department of Neuroscience Yale University New Haven CT 06520 USA Department Physiology & Pharmacology SUNY Downstate Brooklyn NY 11203 USA NYU School of Engineering 6 MetroTech Center Brooklyn NY 11201 USA Departament de Matemàtica Aplicada Universitat Politècnica de Catalunya Barcelona 08028 Spain Institut de Neurobiologie de la Méditerrannée (INMED) INSERM UMR901 Aix-Marseille Univ Marseille France Center of Neural Science New York University New York NY USA Aix-Marseille Univ INSERM INS Inst Neurosci Syst Marseille France Laboratoire de Physique Théorique et Modélisation CNRS UMR 8089 Université de Cergy-Pontoise 95300 Cergy-Pontoise Cedex France Department of Mathematics and Computer Science ENSAT Abdelmalek Essaadi’s University Tangier Morocco Laboratory of Natural Computation Department of Information and Electrical Engineering and Applied Mathematics University of Salerno 84084 Fisciano SA Italy Department of Medicine University of Salerno 84083 Lancusi SA Italy Dipartimento di Fisica Università degli Studi Aldo Moro Bari and INFN Sezione Di Bari Italy Data Analysis Department Ghent University Ghent Belgium Coma Science Group University of Liège Liège Belgium Cruces Hospital and Ikerbasque Research Center Bilbao Spain BIOtech Department of Industrial Engineering University of Trento and IRCS-PAT FBK 38010 Trento Italy Department of Data Analysis Ghent University Ghent 9000 Belgium The Wellcome Trust Centre for Neuroimaging University College London London WC1N 3BG UK Department of Electronic Engineering NED University of Engineering and Technology Karachi Pakistan Blue Brain Project École Polytechnique Fédérale de Lausanne Lausanne Switzerland Departement of Mathematics Swansea University Swansea Wales UK Laboratory for Topology and Neuroscience at the Brain Mind Institute École polytechnique fédérale de Lausanne Lausanne Switzerland Institute of Mathematics University of Aberdeen Aberdeen Scotland UK Department of Integrativ

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A hybrid-integrated external cavity laser with ultra-wide wavelength tuning range and high side-mode suppression

A hybrid-integrated external cavity laser with ultra-wide wa...

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Optical Fiber Communication Conference, OFC 2016

作者： Guo, Yuyao Li, Xinhang Xu, Weihan Liu, Chuxin Jin, Minhui Lu, Liangjun Xie, Jingya Stroganov, Anton Chen, Jianping Zhou, Linjie State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Institute for Advanced Communication and Data Science Department of Electronic Engineering Shanghai Jiao Tong University Shanghai200240 China SJTU-Pinghu Institute of Intelligent Optoelectronics Pinghu314200 China Terahertz Technology Innovation Research Institute Terahertz Spectrum and Imaging Technology Cooperative Innovation Center Shanghai Key Lab of Modern Optical System University of Shanghai for Science and Technology Shanghai200093 China LIGENTEC SA EPFL Innovation Park Bâtiment L Ecublens1024 Switzerland

We present a III-V/Si3N4 hybrid-integrated tunable laser. The laser shows a record of ~170-nm tuning range with a side mode suppression ratio above 64 dB and an intrinsic linewidth below 2.8 kHz. © 2022 The Autho...

ISBN: (纸本)9781943580071

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LS-AMS: An Adaptive Indexing Structure for Realtime Search on Microblogs

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IEEE Transactions on Big data 2015年第4期1卷 125-137页

作者： Zhao, Feng Liu, Jun Zhou, Jingyu Jin, Hai Yang, Laurence T. Services Computing Technology and System Lab Big Data Technology and System Lab Cluster and Grid Computing Lab School of Computer Science and Technolgoy Huazhong University of Science and Technology Wuhan China Department of Computer Science and Engineering Shanghai Jiao Tong University Shanghai China School of Computer Science and Technology Huazhong University of Science and Technology China Department of Computer Science St. Francis Xavier University Canada

Indexing microblogs for realtime search is challenging, because new microblogs are created at tremendous speed, and user query requests keep constantly changing. To guarantee user obtain complete query results, micro-blogging site maintains huge indices which leads to index fragmentation or extra merging overhead during realtime search. This paper proposes an efficient Log-Structured index structure with Adaptive Merging Strategy (LS-AMS) for realtime search on microblogs. LS-AMS structure consists of an inverted index buffer and a sequence of dynamically adjustable index packages with exponentially increasing sizes. These index packages manage their inverted indices using adaptive merging strategy, which can reduce the merging overhead to improve query performance and can adjust the index structure based on environmental factors, such as the arrival rate of query requests and new microblogs. Experimental results show that LS-AMS can greatly improve query performance without increasing the update cost and improve the self-adaptability in dynamic environment. © 2015 IEEE.

关键词： Merging

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Reliable beacon transmission based MAC protocol for LR-WPANs over WLAN interferences

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Journal of Zhejiang University-Science C(Computers and Electronics) 2014年第6期15卷 470-481页

作者： Ji-Hoon PARK Byung-Seo KIM ITO Business Division Nongshim Data System Department of Computer and Information Communications Engineering Hongik University

The use of IEEE 802.15.4 standard based application systems has been rapidly increasing, for example, in medical services, sensor networks, public safety systems, and home automation systems. However, issues arise from the fact that IEEE 802.15.4 standard based low rate wireless personal area networks(LR-WPANs) use the same frequency bands as wireless local area networks(WLANs), and they interfere with each other. Based on past research on this issue, the interference has a more serious impact on LR-WPANs' performance than on WLANs' performance. In this paper we propose a method to improve LR-WPANs' performance while coexisting with WLANs, which is called the reliable beacon transmission based medium access control(MAC) protocol. Since the reliability of a beacon frame is important, in this method, only the beacon frame is transmitted in interference-free channels, and the data packets are transmitted in interfered channels instead of abandoning the channels altogether. This method increases the reliability of beacon frames as well as overall channel utilizations. The effectiveness of the proposed method was evaluated through extensive simulations, and this paper proves that this method improves the performance of IEEE 802.15.4 based wireless sensor networks(WSNs) over WLANs' interferences.

关键词： Low rate wireless personal area network(LR-WPAN) Interference Wireless local area network(WLAN) Beacon

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Models of Rosetta/OSIRIS 67P dust coma phase function

arXiv

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arXiv 2018年

作者： Moreno, F. Guirado, D. Muñoz, O. Bertini, I. Tubiana, C. Güttler, C. Fulle, M. Rotundi, A. della Corte, V. Ivanovski, S.L. Rinaldi, G. Bockelée-Morvan, D. Zakharov, V.V. Agarwal, J. Mottola, S. Toth, I. Frattin, E. Lara, L.M. Gutiérrez, P.J. Lin, Z.Y. Kolokolova, L. Sierks, H. Naletto, G. Lamy, P.L. Rodrigo, R. Koschny, D. Davidsson, B. Barucci, M.A. Bertaux, J.-L. Bodewits, D. Cremonese, G. da Deppo, V. Debei, S. de Cecco, M. Deller, J. Fornasier, S. Ip, W.-H. Keller, H.U. Lazzarin, M. López-Moreno, J.J. Marzari, F. Shi, X. Instituto de Astrofísica de Andalucía CSIC c/ Glorieta de la Astronomía s/n Granada18008 Spain Department of Physics and Astronomy ‘G. Galilei’ University of Padova Vicolo dell’ Osservatorio 3 PadovaI-35122 Italy Max-Planck-Institut für Sonnensystemforschung Justus-von-Liebig-Weg 3 GöttingenD-37077 Germany Osservatorio Astronomico Via Tiepolo 11 TriesteI-34143 Italy INAF - Istituto di Astrofisica e Planetologia Spaziali Via Fosso del Cavaliere 100 RomeI-00133 Italy Universitá degli Studi di Napoli Parthenope Dip. di Scienze e Tecnologie CDN IC4 NaplesI-80143 Italy LESIA Observatoire de Paris PSL Research University CNRS Sorbonne Universités UPMC Univ. Paris 06 Univ. Paris-Diderot Sorbonne Paris Cité 5 place Jules Janssen MeudonF-92195 France Laboratoire de Météorologie Dynamique UPMC Sorbonne Universités Paris France Institut für Planetenforschung Rutherfordstraße 23 Berlin12489 Germany MTA CSFK Konkoly Observatory of the Hungarian Academy of Sciences Konkoly Thege M. ut 15-17. BudapestH1121 Hungary National Central University No.300 Jhongda Rd. Jhongli city Taoyuan County320 Taiwan Planetary Data System Group Department of Astronomy University of Maryland Rm. 1207D Atlantic Bldg. College ParkMD20742 United States Max Planck Institute for Solar System Research Justus-von-Liebig-Weg 3 Göttingen37077 Germany University of Padova Department of Physics and Astronomy "Galileo Galilei" Via Marzolo 8 Padova35131 Italy "G. Colombo" Via Venezia 15 Padova35131 Italy CNR-IFN UOS Padova LUXOR Via Trasea 7 Padova35131 Italy Laboratoire Atmosphères Milieux et Observations Spatiales CNRS Université de Versailles Saint-Quentin-en-Yvelines 11 Boulevard dAlembert Guyancourt78280 France Centro de Astrobiología CSIC-INTA Torrejón de ArdozMadrid28850 Spain International Space Science Institute Hallerstrasse 6 Bern3012 Switzerland Science Support Office European Space Research and Technology Centre/ESA Keplerlaan 1 Postbus 299 Noord

The phase function of the dust coma of comet 67P has been determined from Rosetta/OSIRIS images (Bertini et al. 2017). This function show a deep minimum at phase angles near 100◦, and a strong backscattering enhancement. These two properties cannot be reproduced by regular models of cometary dust, most of them based on wavelength-sized and randomly-oriented aggregate particles. We show, however, that an ensamble of oriented elongated particles of a wide variety of aspect ratios, with radii r &10 µm, and whose long axes are perpendicular to the direction of the solar radiation, are capable of reproducing the observed phase function. These particles must be absorbing, with an imaginary part of the refractive index of about 0.1 to match the expected geometric albedo, and with porosity in the 60-70% range. Copyright © 2018, The Authors. All rights reserved.

关键词： Dust

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Undoped Layered Perovskite Oxynitride Li2LaTa2O6N for Photocatalytic CO2Reduction with Visible Light

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Angewandte Chemie 2018年第27期130卷

作者： Takayoshi Oshima Tom Ichibha Ken Sinkou Qin Kanemichi Muraoka Junie Jhon M. Vequizo Keisuke Hibino Ryo Kuriki Shunsuke Yamashita Kenta Hongo Tomoki Uchiyama Kotaro Fujii Daling Lu Ryo Maezono Akira Yamakata Hideki Kato Koji Kimoto Masatomo Yashima Yoshiharu Uchimoto Masato Kakihana Osamu Ishitani Hiroshi Kageyama Kazuhiko Maeda Department of Chemistry School of Science Tokyo Institute of Technology 2-12-1-NE-2 Ookayama Meguro-ku Tokyo 152-8550 Japan Japan Society for the Promotion of Science Kojimachi Business Center Building 5-3-1 Kojimachi Chiyoda-ku Tokyo 102-0083 Japan School of Information Science JAIST Asahidai 1-1 Nomi Ishikawa 923-1292 Japan Graduate School of Engineering Toyota Technological Institute 2-12-1 Hisakata Tempaku Nagoya 468-8511 Japan Research Center for Advanced Measurement and Characterization National Institute for Materials Science 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan Research Center for Advanced Computing Infrastructure JAIST Asahidai 1-1 Nomi Ishikawa 923-1292 Japan Center for Materials Research by Information Integration Research and Services Division of Materials Data and Integrated System National Institute for Materials Science Tsukuba 305-0047 Japan PRESTO (Japan) Science and Technology Agency 4-1-8 Honcho Kawaguchi-shi Saitama 322-0012 Japan Computational Engineering Applications Unit RIKEN 2-1 Hirosawa Wako Saitama 351-0198 Japan Graduate school of Human and Environmental Studies Kyoto University Yoshida-nihonmatsu-cho Sakyo-ku Kyoto 606-8501 Japan Suzukakedai Materials Analysis Division Technical Department Tokyo Institute of Technology 4259 Nagatsuta-cho Midori-ku Yokohama 226-8503 Japan Institute of Multidisciplinary Research for Advanced Materials Tohoku University 2-1-1 Katahira Aoba-ku Sendai 980-8577 Japan Graduate School of Engineering Kyoto University Nishikyo-ku Kyoto 615-8510 Japan

Oxynitrides are promising visible‐light‐responsive photocatalysts, but their structures are almost confined with three‐dimensional (3D) structures such as perovskites. A phase‐pure Li 2 LaTa 2 O 6 N with a layered perovskite structure was successfully prepared by thermal ammonolysis of a lithium‐rich oxide precursor. Li 2 LaTa 2 O 6 N exhibited high crystallinity and visible‐light absorption up to 500 nm. As opposed to well‐known 3D oxynitride perovskites, Li 2 LaTa 2 O 6 N supported by a binuclear Ru II complex was capable of stably and selectively converting CO 2 into formate under visible light ( λ >400 nm). Transient absorption spectroscopy indicated that, as compared to 3D oxynitrides, Li 2 LaTa 2 O 6 N possesses a lower density of mid‐gap states that work as recombination centers of photogenerated electron/hole pairs, but a higher density of reactive electrons, which is responsible for the higher photocatalytic performance of this layered oxynitride.

关键词： CO2-Reduktion Oxynitride Perowskite Photokatalyse Sichtbares Licht

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A hybrid model for media layer thermal management in heat assisted magnetic recording

A hybrid model for media layer thermal management in heat as...

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International Conference on Magnetics (INTERMAG)

作者： M. S. Jhon S. Vemuri H. Kim W. Song P. Chung 1. Chemical Engineering Carnegie Mellon Univ. Pittsburgh PA 2. Data Storage Systems Center Pittsburgh PA 3. Department of Mechanical System Engineering Kyonggi University Suwon Korea

In order to meet the requirements of ever increasing demand for higher memory capacities, heat assisted magnetic recording (HAMR) is quickly becoming one of the most promising technologies (Fig. 1). However, there are stringent operating requirements i of heating and cooling of the disk that occur within the order of nanoseconds to achieve the necessary data rates and to generate thermal gradients for sharp bit edge. After the information is recorded, the recorded data have to be thermally stable during cooling to ambient environment as well as the excess thermal energy stored in the disk should be dissipated efficiently to a sink.

关键词： Media Heat-assisted magnetic recording Mathematical model Heat transfer Heating Heat sinks

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GAMBIT: The Global and Modular Beyond-the-Standard-Model Inference Tool

arXiv

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arXiv 2017年

作者： Athron, Peter Balazs, Csaba Bringmann, Torsten Buckley, Andy Chrząszcz, Marcin Conrad, Jan Cornell, Jonathan M. Dal, Lars A. Dickinson, Hugh Edsjö, Joakim Farmer, Ben Gonzalo, Tomás E. Jackson, Paul Krislock, Abram Kvellestad, Anders Lundberg, Johan McKay, James Mahmoudi, Farvah Martinez, Gregory D. Putze, Antje Raklev, Are Ripken, Joachim Rogan, Christopher Saavedra, Aldo Savage, Christopher Scott, Pat Seo, Seon-Hee Serra, Nicola Weniger, Christoph White, Martin Wild, Sebastian School of Physics and Astronomy Monash University MelbourneVIC3800 Australia Australian Research Council Centre of Excellence for Particle Physics at the Tera-scale Department of Physics University of Oslo OsloN-0316 Norway SUPA School of Physics and Astronomy University of Glasgow GlasgowG12 8QQ United Kingdom Physik-Institut Universität Zürich Winterthurerstrasse 190 Zürich8057 Switzerland H. Niewodniczański Institute of Nuclear Physics Polish Academy of Sciences Kraków31-342 Poland Oskar Klein Centre for Cosmoparticle Physics AlbaNova University Centre StockholmSE-10691 Sweden Department of Physics Stockholm University StockholmSE-10691 Sweden Department of Physics McGill University 3600 rue University MontréalQCH3A 2T8 Canada Minnesota Institute for Astrophysics University of Minnesota MinneapolisMN55455 United States Department of Physics University of Adelaide AdelaideSA5005 Australia NORDITA Roslagstullsbacken 23 StockholmSE-10691 Sweden Department of Physics Imperial College London Blackett Laboratory Prince Consort Road LondonSW7 2AZ United Kingdom Univ Lyon Univ Lyon 1 ENS de Lyon CNRS Centre de Recherche Astrophysique de Lyon UMR5574 Saint-Genis-LavalF-69230 France Theoretical Physics Department CERN Geneva 23CH-1211 Switzerland Physics and Astronomy Department University of California Los AngelesCA90095 United States LAPTh Université de Savoie CNRS 9 chemin de Bellevue B.P.110 Annecy-le-VieuxF-74941 France Max Planck Institute for Solar System Research Justus-von-Liebig-Weg 3 GöttingenD-37077 Germany Department of Physics Harvard University CambridgeMA02138 United States Centre for Translational Data Science Faculty of Engineering and Information Technologies School of Physics University of Sydney NSW2006 Australia Department of Physics and Astronomy Seoul National University 1 Gwanak-ro Gwanak-gu Seoul08826 Korea Republic of GRAPPA Institute of Physics University of Amsterdam Science Park 904 Amst

We describe the open-source global fitting package GAMBIT: the Global And Modular Beyond-the-Standard-Model Inference Tool. GAMBIT combines extensive calculations of observables and likelihoods in particle and astroparticle physics with a hierarchical model database, advanced tools for automatically building analyses of essentially any model, a flexible and powerful system for interfacing to external codes, a suite of different statistical methods and parameter scanning algorithms, and a host of other utilities designed to make scans faster, safer and more easily-extendible than in the past. Here we give a detailed description of the framework, its design and motivation, and the current models and other specific components presently implemented in GAMBIT. Accompanying papers deal with individual modules and present first GAMBIT results. GAMBIT can be downloaded from ***. Copyright © 2017, The Authors. All rights reserved.

关键词： Hierarchical systems

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Probabilistic Model of Mean Stress Effects in Strain-Life Fatigue

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Procedia engineering 2015年 114卷 538-545页

作者： Nicole Apetre Attilio Arcari Norman Dowling Nagaraja Iyyer Nam Phan Technical Data Analysis Inc. 3190 Fairview Park Drive Suite 650 Falls Church VA 22042 USA Materials Science and Engineering Department and Engineering Science and Mechanics Department (Jointly Appointed) Virginia Polytechnic Institute and State University Blacksburg VA 24061 USA US Naval Air System Command Patuxent River MD 20670 USA

This paper proposes a modification of the Walker model to account for the mean stress effect on fatigue life of structures and the associated scatter of experimental data. To account for various sources of uncertainty, a framework which permits dealing with run-outs and provides an analytical probabilistic definition of the whole strain-life field, both in the low-cycle and high-cycle fatigue regions is used. The proposed model is an improvement relative to the Smith-Watson-Topper model for materials that are significantly more or less sensitive to mean stress. Model's applicability is shown for various metals.

关键词： Fatigue life mean stress effects Walker equation strain-life curve Smith-Watson-Topper equation Weibull regression.

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