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2015 6th IEEE International Conference on Software Engineering and Service science(ICSESS 2015)

作者： Liujian Chen Lujia Bi Huayou Si Jilin Zhang Yongjian Ren Key Laboratory of Complex System Modeling and Simulation Ministry of Education Department of Computer Science and Technology Hangzhou Dianzi University Department of Information First Hospital of Jiaxing

Indicators of medical quality is the main basis of medical quality evaluation, predictive analyzing the indicators by using data mining technology, we can find and solve the problems of hospital quality management more timely. The study, basing on the medical homepage records, analyzes the key indicators of the hospital medical quality by decision tree C4.5 algorithm. Decision tree is a prediction model which can assist hospital to make related decision on medical quality management issues. By using decision tree C4.5 algorithm with appropriate modification, a high quality model of decision tree can be made. It can not only do the statistic of medical quality indicators, but also predict the indicators with high relative accuracy to improve hospital’s medical quality management.

关键词： medical quality data mining decision tree C4.5

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Active Gravity Compensation Test Bed for a Six-DOF Free-flying Robot

Active Gravity Compensation Test Bed for a Six-DOF Free-flyi...

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IEEE International Conference on Information and Automation

作者： Lifang Li Haibo Gao Zongquan Deng Pengzhen Guo Research Center of Basic Space Science Harbin Institute of Technology State Key Laboratory of Robotics and System Harbin Institute of Technology Department of Physics Harbin Institute of Technology

ISBN: (纸本)9781467391054

A novel active gravity compensation concept is proposed to simulate space on-orbit microgravity environments for free-flying robots on ground. Here, robots are suspended by active-controlled motion path tracking mechanisms through wires to compensate for gravitational forces. Based on the concept, an experimental test bed was designed and fabricated in laboratory to study on-ground kinematic and dynamic behaviors of a free-flying robot. The experimental fabrication contains an active horizontal motion tracking mechanism composed of primary and secondary active rotating arms. An multi-objective optimization method calculating the tension of the wires to minimize torques on robot joints is approved. The tension of the suspension wires is obtained through passive counterweights using pulley mechanisms. The kinematics and dynamics of a 6-DOF free-flying manipulator were calculated in MATLAB and simulated in MSC Adams under three working conditions: zero-gravity, gravity compensation and gravity. The lowest ratio of the torque compensation reached 80%. Agreements between numerical analyses and simulation results confirm the ability of this gravity compensation concept to simulate the kinematic and dynamic behaviors of free-flying manipulator in space.

关键词： Free-flying manipulators space robots Gravity compensation

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26th Annual Computational Neuroscience Meeting (CNS*2017) of the Organization for Computational Neuroscience Antwerp, Belgium, July 15-20, 2017

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BMC NEUROscience 2017年第SUPPL 1期18卷 59-59页

作者： [Anonymous] Indiana University Purdue University Indianapolis Indianapolis IN 46032 USA Stark Neurosciences Research Institute Indiana University School of Medicine Indianapolis IN 46032 USA Department of Mathematics East Carolina University Greenville NC 27858 USA Jülich Supercomputing Centre Forschungszentrum Jülich 52425 Jülich Germany Future Systems Swiss National Supercomputing Centre 8092 Zurich Switzerland User Engagement and Support Swiss National Supercomputing Centre 6900 Lugano Switzerland Institut de Neurosciences des Systèmes Aix Marseille Univ 13005 Marseille France Simulation Lab Neuroscience Forschungszentrum Jülich Jülich Germany Department of Experimental Psychology Ghent University 9000 Ghent Belgium Donders Center for Cognitive Neuroimaging Radboud University 6525HR Nijmegen The Netherlands Department of Electrical Computer and Energy Engineering University of Colorado Boulder CO 80309 USA Department of Neurosurgery Johns Hopkins School of Medicine Baltimore MD 21287 USA Department of Neurology Johns Hopkins School of Medicine Baltimore MD 21287 USA Department of Otolaryngology Johns Hopkins School of Medicine Baltimore MD 21287 USA INSERM U968 Paris France Sorbonne Universités UPMC University Paris 06 UMR_S 968 Institut de la Vision Paris France CNRS UMR_7210 Paris France Department of Computer Architecture and Technology University of Granada (CITIC) Granada Spain Sorbonne Universités UPMC Univ Paris 06 INSERM CNRS Institut de la Vision Paris France Department of Adaptive Machine Systems Osaka University Osaka Japan Department of Computer Science University of Cergy-Pontoise Cergy-Pontoise France Department of Physics and Astronomy College of Charleston Charleston SC 29424 USA School of Physics Faculty of Science University of Sydney Sydney NSW 2006 Australia Center of Excellence for Integrative Brain Function Australian Research Council Sydney Australia Max Planck Institute for Human Cognitive and Brain Sciences Saxony Lei

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CLOUD ATLAS: DISCOVERY OF ROTATIONAL SPECTRAL MODULATIONS IN A LOW-MASS, L-TYPE BROWN DWARF COMPANION TO A STAR

arXiv

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arXiv 2017年

作者： Manjavacas, Elena Apai, Dániel Zhou, Yifan Karalidi, Theodora Lew, Ben W.P. Schneider, Glenn Cowan, Nicolas Metchev, Stan Miles-Páez, Paulo A. Burgasser, Adam J. Radigan, Jacqueline Bedin, Luigi R. Lowrance, Patrick J. Marley, Mark S. Department of Astronomy/Steward Observatory University of Arizona 933 N. Cherry Avenue TucsonAZ85721 United States Department of Planetary Science Lunar and Planetary Laboratory University of Arizona 1640 E. University Boulevard TucsonAZ85718 United States Earths in Other Solar Systems Team NASA Nexus for Exoplanet System Science Department of Astronomy and Astrophysics University of California Santa CruzCA United States Department of Earth & Planetary Sciences 3450 University St. MontrealQCH3A 0E8 Canada University of Western Ontario Department of Physics and Astronomy 1151 Richmond Avenue LondonONN6A 3K7 Canada Center for Astrophysics and Space Science University of California San Diego La JollaCA92093 United States Utah Valley University 800 West University Parkway OremUT84058 United States INAF Osservatorio Astronomico di Padova Vicolo dell’Osservatorio 5 PadovaI-35122 Italy IPAC-Spitzer MC 314-6 California Institute of Technology PasadenaCA91125 United States NASA Ames Research Center Mail Stop 245-3 Moffett FieldCA94035 United States

Observations of rotational modulations of brown dwarfs and giant exoplanets allow the characterization of condensate cloud properties. As of now rotational spectral modulations have only been seen in three L-type brown dwarfs. We report here the discovery of rotational spectral modulations in LP261-75B, an L6-type intermediate surface gravity companion to an M4.5 star. As a part of the Cloud Atlas Treasury program we acquired time-resolved Wide Field Camera 3 grism spectroscopy (1.1–1.69 µm) of LP261-75B. We find gray spectral variations with the relative amplitude displaying only a weak wavelength dependence and no evidence for lower-amplitude modulations in the 1.4 µm water band than in the adjacent continuum. The likely rotational modulation period is 4.78±0.95 h, although the rotational phase is not well sampled. The minimum relative amplitude in the white light curve measured over the whole wavelength range is 2.41±0.14%. We report an unusual light curve with seemingly three peaks approximately evenly distributed in rotational phase. The spectral modulations suggests that the upper atmosphere cloud properties in LP261-75B are similar to two other mid-L dwarfs of typical infrared colors, but differ from that of the extremely red L-dwarf WISE0047. Copyright © 2017, The Authors. All rights reserved.

关键词： Spectroscopy

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An ultrahot gas-giant exoplanet with a stratosphere

arXiv

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arXiv 2017年

作者： Evans, Thomas M. Sing, David K. Kataria, Tiffany Goyal, Jayesh Nikolov, Nikolay Wakeford, Hannah R. Deming, Drake Marley, Mark S. Amundsen, David S. Ballester, Gilda E. Barstow, Joanna K. Ben-Jaffel, Lotfi Bourrier, Vincent Buchhave, Lars A. Cohen, Ofer Ehrenreich, David Muñoz, Antonio García Henry, Gregory W. Knutson, Heather Lavvas, Panayotis des Etangs, Alain Lecavelier Lewis, Nikole K. López-Morales, Mercedes Mandell, Avi M. Sanz-Forcada, Jorge Tremblin, Pascal Lupu, Roxana Astrophysics Group School of Physics University of Exeter Stocker Road ExeterEX4 4QL United Kingdom NASA Jet Propulsion Laboratory 4800 Oak Grove Drive PasadenaCA91109 United States NASA Goddard Space Flight Center GreenbeltMD20771 United States Department of Astronomy University of Maryland College ParkMD20742 United States NASA Ames Research Center MS 245-5 Moffett FieldCA94035 United States Department of Applied Physics and Applied Mathematics Columbia University New YorkNY10025 United States NASA Goddard Institute for Space Studies New YorkNY10025 United States Lunar and Planetary Laboratory University of Arizona TucsonAZ85721 United States Department of Physics and Astronomy University College London Gower Street LondonWC1E 6BT United Kingdom Sorbonne Universités UPMC Université Paris 6 CNRS UMR 7095 Institut d’Astrophysique de Paris 98 bis boulevard Arago ParisF-75014 France Observatoire de l’Université de Genève 51 chemin des Maillettes Sauverny1290 Switzerland Centre for Star and Planet Formation Niels Bohr Institute and Natural History Museum University of Copenhagen CopenhagenDK-1350 Denmark Lowell Center for Space Science and Technology University of Massachusetts LowellMA01854 United States Zentrum für Astronomie und Astrophysik Technische Universität Berlin BerlinD-10623 Germany Center of Excellence in Information Systems Tennessee State University NashvilleTN37209 United States Division of Geological and Planetary Sciences California Institute of Technology PasadenaCA91125 United States Groupe de Spectrométrie Moléculaire et Atmosphérique UMR 7331 CNRS Université de Reims Champagne-Ardenne Reims51687 France Space Telescope Science Institute 3700 San Martin Drive BaltimoreMD21218 United States Harvard-Smithsonian Center for Astrophysics 60 Garden Street CambridgeMA02138 United States ESAC Campus Camino bajo del Castillo Villanueva de la Cañada MadridE-28692 Spain Maison de la Simulation CEA CNRS

Infrared radiation emitted from a planet contains information about the chemical composition and vertical temperature profile of its atmosphere1–3. If upper layers are cooler than lower layers, molecular gases will produce absorption features in the planetary thermal spectrum4,5. Conversely, if there is a stratosphere—where temperature increases with altitude—these molecular features will be observed in emission6–8. It has been suggested that stratospheres could form in highly irradiated exoplanets9,10, but the extent to which this occurs is unresolved both theoretically11,12 and observationally3,13–15. A previous claim for the presence of a stratosphere14 remains open to question, owing to the challenges posed by the highly variable host star and the low spectral resolution of the measurements3. Here we report a near-infrared thermal spectrum for the ultrahot gas giant WASP-121b, which has an equilibrium temperature of approximately 2,500 kelvin. Water is resolved in emission, providing a detection of an exoplanet stratosphere at 5σ confidence. These observations imply that a substantial fraction of incident stellar radiation is retained at high altitudes in the atmosphere, possibly by absorbing chemical species such as gaseous vanadium oxide and titanium oxide. Copyright © 2017, The Authors. All rights reserved.

关键词： Extrasolar planets

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Modeling and Identification of Hysteresis in Smart Materials Using Maxwell Model

Modeling and Identification of Hysteresis in Smart Materials...

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2nd International Conference on simulation and Modeling Methodologies,Technologies and Applications(SMTA 2015)

作者： Y.Liu Y.Meng J.Shan State Key Laboratory of Robotics and System (HIT) Department of Aerospace Engineering Harbin Institute of Technology Aerospace System Engineering Shanghai Department of Earth and Space Science and Engineering York University

Smart materials exhibit unwanted behaviors. The main one is hysteresis that caused by complex mechanisms of energy dissipation taking place in microscopic level. This paper presents an approach of modeling and identification of hysteresis in smart materials using the Maxwell model. The model is reviewed first and then the procedure of identification is presented in details, including 1) the initial parameters generation, 2) preliminary optimization of parameters with global optimization algorithm, and 3) the final optimization of parameters with gradient optimization method. The effect of the number of Maxwell elements is also analyzed.

关键词： spring Modeling and Identification of Hysteresis in Smart Materials Using Maxwell Model

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Existence and global exponential stability of anti-periodic solutions for shunting inhibitory cellular neural networks with impulses and continuously distributed delays

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Journal of Computational and Theoretical Nanoscience 2015年第10期12卷 3927-3935页

作者： Xu, Changjin Zhang, Qiming Liao, Maoxin Guizhou Key Laboratory of Economics System Simulation Guizhou University of Finance and Economics Guiyang China College of Science Hunan University of Technology Zhuzhou China School of Mathematics and Physics University of South China Hengyang China

This paper is concerned with the existence and exponential stability of anti-periodic solutions of shunting inhibitory cellular neural networks with impulses and continuously distributed delays. Applying Krasnoselski's fixed point theorem, inequality techniques and Lyapunov method, sufficient conditions which ensure the existence and exponential stability of anti-periodic solutions of shunting inhibitory neural networks are presented. An example with its numerical simulations is given to illustrate our main results. Our results are new and supplement some previously known ones. Copyright © 2015 American Scientific Publishers.

关键词： Lyapunov methods

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The monitoring of land use and land cover change of Sichuan province and Chengdu district, China

The monitoring of land use and land cover change of Sichuan ...

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IEEE International Symposium on Geoscience and Remote Sensing (IGARSS)

作者： Shijie Yu Zezhong Zheng Wunian Yang Mingcang Zhu Yong He Zhenlu Yu Shengli Wang Fu Wang Jiang Li School of Resources and Environment Univ. of Electronic Science and Technology of China Chengdu Sichuan PRC State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan Univ. Wuhan Hubei PRC Ministry of Land and Resources of the China Chengdu Univ. of Technology Chengdu Sichuan PRC Guangxi Key Laboratory for Spatial Information and Geomatics Guilin Guangxi PRC Land and Resources Department of Sichuan Province Chengdu Sichuan PRC Sichuan Institute of Geo-Environment Monitoring Chengdu Sichuan PRC China National Space Administration Earth Observation System and Data Center Beijing PRC CMA National Satellite Meteorological Center Beijing PRC Dep. of Electrical and Computer Engineering Old Dominion Univ. Norfolk VA USA

Land use and land cover change (LUCC) is necessary to explore the factors leading to heavy drought and rainy-flood disaster in some districts of Sichuan province. A method based RS, GIS, GPS and Google earth (GE) is presented to establish LUCC database in Sichuan province and Chengdu district. At first, LUCC is interpreted based on the new temporal images and the land use and land cover database from TM in ***, some ground objects, which could not be identified in the new temporal images, were interpreted utilizing GE with some higher spatial resolution images. Thirdly, the new interpreted LUCC was validated in the field with GPS handheld receiver. Then, LUCC of Sichuan province was updated. A comparative analysis of LUCC between in Sichuan province and in Chengdu district was conducted and the result showed: (1) a large amount of farmland in Sichuan Province was occupied from 2000 to 2005 and the area is 84 573 ha. While construction land gained obviously and the area was 35 828 ha. The dynamic degree of construction land was 111.10 0 / 00 from 2000 to 2005. The LUCC demonstrated that the economy of Sichuan province continued to develop, the cities were overspreading and the urban heat island effect was deteriorated from 2000 to 2005. (2) A large amount of farmland was also occupied in Chengdu district from 2000 to 2005, the area amounted to 12 989 ha. The farmland lost was mainly changed to construction land, amounting to 93%. And the dynamic degree was 117.41 0 / 00 from 2000 to 2005, which was bigger than that in Sichuan province.

关键词： Spatial resolution Global Positioning system Urban areas Thermal pollution Remote sensing Google Databases

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OGLE-2016-BLG-1190Lb: First spitzer bulge planet lies near the planet/brown-dwarf boundary

arXiv

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arXiv 2017年

作者： Ryu, Y.-H. Yee, J.C. Udalski, A. Bond, I.A. Shvartzvald, Y. Zang, W. Figuera Jaimes, R. Jørgensen, U.G. Zhu, W. Huang, C.X. Jung, Y.K. Albrow, M.D. Chung, S.-J. Gould, A. Han, C. Hwang, K.-H. Shin, I.-G. Cha, S.-M. Kim, D.-J. Kim, H.-W. Kim, S.-L. Lee, C.-U. Lee, D.-J. Lee, Y. Park, B.-G. Pogge, R.W. Calchi Novati, S. Carey, S. Henderson, C.B. Beichman, C. Gaudi, B.S. Mróz, P. Poleski, R. Skowron, J. Szymanski, M.K. Soszynski, I. Kozlowski, S. Pietrukowicz, P. Ulaczyk, K. Pawlak, M. Abe, F. Asakura, Y. Barry, R. Bennett, D.P. Bhattacharya, A. Donachie, M. Evans, P. Fukui, A. Hirao, Y. Itow, Y. Kawasaki, K. Koshimoto, N. Li, M.C.A. Ling, C.H. Masuda, K. Matsubara, Y. Miyazaki, S. Muraki, Y. Nagakane, M. Ohnishi, K. Ranc, C. Rattenbury, N.J. Saito, To. Sharan, A. Sullivan, D.J. Sumi, T. Suzuki, D. Tristram, P.J. Yamada, T. Yamada, T. Yonehara, A. Bryden, G. Howell, S.B. Jacklin, S. Penny, M.T. Mao, S. Fouqué, Pascal Wang, T. Street, R.A. Tsapras, Y. Hundertmark, M. Bachelet, E. Dominik, M. Li, Z. Cross, S. Cassan, A. Horne, K. Schmidt, R. Wambsganss, J. Ment, S.K. Maoz, D. Snodgrass, C. Steele, I.A. Bozza, V. Burgdorf, M.J. Ciceri, S. D’Ago, G. Evans, D.F. Hinse, T.C. Kerins, E. Kokotanekova, R. Longa, P. MacKenzie, J. Popovas, A. Rabus, M. Rahvar, S. Sajadian, S. Skottfelt, J. Southworth, J. von Essen, C. Korea Astronomy and Space Science Institute Daejon34055 Korea Republic of Harvard-Smithsonian Center for Astrophysics 60 Garden St. CambridgeMA02138 United States Warsaw University Observatory Al. Ujazdowskie 4 Warszawa00-478 Poland Institute of Natural and Mathematical Sciences Massey University Auckland0745 New Zealand Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove Drive PasadenaCA91109 United States Physics Department and Tsinghua Centre for Astrophysics Tsinghua University Beijing100084 China Department of Physics Zhejiang University Hangzhou310058 China Centre for Exoplanet Science SUPA School of Physics & Astronomy University of St Andrews North Haugh St AndrewsKY16 9SS United Kingdom European Southern Observatory Karl-Schwarzschild-Str. 2 Garching bei München85748 Germany Niels Bohr Institute Centre for Star and Planet Formation University of Copenhagen Øster Voldgade 5 Copenhagen K1350 Denmark Department of Astronomy Ohio State University 140 W. 18th Ave. ColumbusOH43210 United States Department of Physics Kavli Institute for Astrophysics and Space Research Massachusetts Institute of Technology CambridgeMA02139 United States Dunlap Institute for Astronomy and Astrophysics University of Toronto TorontoONM5S 3H4 Canada Centre of Planetary Science University of Toronto Scarborough Campus Physical & Environmental Sciences TorontoM1C 1A4 Canada University of Canterbury Department of Physics and Astronomy Private Bag 4800 Christchurch8020 New Zealand Astronomy and Space Science Major Korea University of Science and Technology Daejeon34113 Korea Republic of Max-Planck-Institute for Astronomy Königstuhl 17 Heidelberg69117 Germany Department of Physics Chungbuk National University Cheongju28644 Korea Republic of School of Space Research Kyung Hee University Yongin Kyeonggi17104 Korea Republic of IPAC Mail Code 100-22 Caltech 1200 E. California Blvd. PasadenaCA91125 United States 84084

We report the discovery of OGLE-2016-BLG-1190Lb, which is likely to be the first Spitzer microlensing planet in the Galactic bulge/bar, an assignation that can be confirmed by two epochs of high-resolution imaging of the combined source-lens baseline object. The planet’s mass Mp = 13.4 ± 0.9 MJ places it right at the deuterium burning limit, i.e., the conventional boundary between "planets" and "brown dwarfs". Its existence raises the question of whether such objects are really "planets" (formed within the disks of their hosts) or "failed stars" (low massobjects formed by gas fragmentation). This question may ultimately be addressed by comparing disk and bulge/bar planets, which is a goal of the Spitzer microlens program. The host is a G dwarf Mhost = 0.89 ± 0.07 M and the planet has a semi-major axis a ∼ 2.0 AU. We use Kepler K2 Campaign 9 microlensing data to break the lens-mass degeneracy that generically impacts parallax solutions from Earth-Spitzer observations alone, which is the first successful application of this approach. The microlensing data, derived primarily from near-continuous, ultra-dense survey observations from OGLE, MOA, and three KMTNet telescopes, contain more orbital information than for any previous microlensing planet, but not quite enough to accurately specify the full orbit. However, these data do permit the first rigorous test of microlensing orbital-motion measurements, which are typically derived from data taken over Copyright © 2017, The Authors. All rights reserved.

关键词： Planets

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Model Based Management and Control of Training simulation Environment

Model Based Management and Control of Training Simulation En...

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Chinese Automation Congress

作者： Rongqing Meng Xingke Liu Zhichao Song Xiaogang Qiu College of Information System and Management National University of Defense Technology Science and Technology on Complex Aviation System Simulation Laboratory

ISBN: (纸本)9781467371902

Training simulation is broadly used in military training but not limited. The simulation environment contains so many elements and so many factors affect the result, so an effective and efficient mechanism to help to manage these factors is required. This article firstly listes the elements in the environment, and then builds the object models of all kinds of objects. Based on these object models, the experiment frame is designed. Finally, a simple case study is given. According to the actual application, these models and frame facilitate the experiment management and help the analysts to analyze the simulation result.

关键词： Training simulation Model Based Management and Control of simulation

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