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Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray

作者： Zhang, S.N. Feroci, M. Santangelo, A. Dong, Y.W. Feng, H. Lu, F.J. Nandra, K. Wang, Z.S. Zhang, S. Bozzo, E. Brandt, S. De Rosa, A. Gou, L.J. Hernanz, M. Van Der Klis, M. Li, X.D. Liu, Y. Orleanski, P. Pareschi, G. Pohl, M. Poutanen, J. Qu, J.L. Schanne, S. Stella, L. Uttley, P. Watts, A. Xu, R.X. Yu, W.F. In't Zand, J.J.M. Zane, S. Alvarez, L. Amati, L. Baldini, L. Bambi, C. Basso, S. Bhattacharyya, S. Bellazzini, R. Belloni, T. Bellutti, P. Bianchi, S. Brez, A. Bursa, M. Burwitz, V. Budtz-Jorgensen, C. Caiazzo, I. Campana, R. Cao, X.L. Casella, P. Chen, C.Y. Chen, L. Chen, T.X. Chen, Y. Chen, Y. Chen, Y.P. Civitani, M. Zelati, F. Coti Cui, W. Cui, W.W. Dai, Z.G. Del Monte, E. De Martino, D. Di Cosimo, S. Diebold, S. Dovciak, M. Donnarumma, I. Doroshenko, V. Esposito, P. Evangelista, Y. Favre, Y. Friedrich, P. Fuschino, F. Galvez, J.L. Gao, Z.L. Ge, M.Y. Gevin, O. Goetz, D. Han, D.W. Heyl, J. Horak, J. Hu, W. Huang, F. Huang, Q.S. Hudec, R. Huppenkothen, D. Israel, G.L. Ingram, A. Karas, V. Karelin, D. Jenke, P.A. Ji, L. Kennedy, T. Korpela, S. Kunneriath, D. Labanti, C. Li, G. Li, X. Li, Z.S. Liang, E.W. Limousin, O. Lin, L. Ling, Z.X. Liu, H.B. Liu, H.W. Liu, Z. Lu, B. Lund, N. Lai, D. Luo, B. Luo, T. Ma, B. Mahmoodifar, S. Marisaldi, M. Martindale, A. Meidinger, N. Men, Y.P. Michalska, M. Mignani, R. Minuti, M. Motta, S. Muleri, F. Neilsen, J. Orlandini, M. Pan, A.T. Patruno, A. Perinati, E. Picciotto, A. Piemonte, C. Pinchera, M. Rachevski, A. Rapisarda, M. Rea, N. Rossi, E.M.R. Rubini, A. Sala, G. Shu, X.W. Sgro, C. Shen, Z.X. Soffitta, P. Song, L.M. Spandre, G. Stratta, G. Strohmayer, T.E. Sun, L. Svoboda, J. Tagliaferri, G. Tenzer, C. Tong, H. Taverna, R. Torok, G. Turolla, R. Vacchi, A. Wang, J. Wang, J.X. Walton, D. Wang, K. Wang, J.F. Wang, R.J. Wang, Y.F. Weng, S.S. Wilms, J. Winter, B. Wu, X. Wu, X.F. Xiong, S.L. Xu, Y.P. Xue, Y.Q. Key Laboratory of Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sc iences Beijing100049 China IAPS INAF Via del Fosso del Cavaliere 100 Rome00133 Italy IAAT University of Tuebingen Sand 1 Tuebingen72076 Germany ISDC Geneve University Chemin d'Ecogia 16 Versoix1290 Switzerland National Space Institute Technical University of Denmark Elektrovej Bld 327 Kgs Lyngby2800 Denmark Campus UAB C/Magrans s/n Barcelona Spain DPNC Geneve University Quai Ernest-Ansermet 30 Geneva1205 Switzerland Astrophysics Science Division Joint Space-Science Institute NASA Goddard Space Flight Center GreenbeltMD20771 United States Department of Engineering Physics Center for Astrophysics Tsinghua University Beijing100084 China Key Laboratory of Advanced Microstructured Materials Ministry of Education Institute of Precision Optical Engineering School of Physics Science and Engineering Tongji University Shanghai200090 China National Astronomical Observatories Chinese Academy of Sciences 20A Datun Road Chaoyang District Beijing China Shanghai Astronomical Observatory 80 Nandan Road Shanghai200030 China Nanjing University 22 Hankou Road Nanjing Jiangsu210093 China Purdue University 525 Northwestern Avenue West LafayetteIN47907 United States Max Planck Institute for extraterrestrial Physics Giessenbachstr. 1 Garching Germany Peking University No.5 Yiheyuan Road Haidian District Beijing100871 China Center for Field Theory and Particle Physics Department of Physics Fudan University Shanghai200433 China University of Alabama in Huntsville HuntsvilleAL35805 United States INAF OA Roma Via Frascati 33 Monte Porzio Catone00040 Italy Anton Pannekoek Institute University of Amsterdam Postbus 94249 Amsterdam Netherlands SRON Sorbonnelaan 2 Utrecht3584 CA Netherlands Leiden Observatory Niels Bohrweg 2 LeidenNL-2333 CA Netherlands ASTRON Netherlands Institute for Radio Astronomy Postbus 2 Dwingeloo7990 AA Netherlands 2

ISBN: (纸本)9781510601895

EXTP is a science mission designed to study the state of matter under extreme conditions of density, gravity and magnetism. Primary goals are the determination of the equation of state of matter at supra-nuclear density, the measurement of QED effects in highly magnetized star, and the study of accretion in the strong-field regime of gravity. Primary targets include isolated and binary neutron stars, strong magnetic field systems like magnetars, and stellar-mass and supermassive black holes. The mission carries a unique and unprecedented suite of state-of-the-art scientific instruments enabling for the first time ever the simultaneous spectral-timing-polarimetry studies of cosmic sources in the energy range from 0.5-30 keV (and beyond). key elements of the payload are: the Spectroscopic Focusing Array (SFA) - a set of 11 X-ray optics for a total effective area of ∼0.9 m2 and 0.6 m2 at 2 keV and 6 keV respectively, equipped with Silicon Drift Detectors offering 2, between 6 and 10 keV, and spectral resolution better than 250 eV;the Polarimetry Focusing Array (PFA) - a set of 2 X-ray telescope, for a total effective area of 250 cm2 at 2 keV, equipped with imaging gas pixel photoelectric polarimeters;the Wide Field Monitor (WFM) - a set of 3 coded mask wide field units, equipped with position-sensitive Silicon Drift Detectors, each covering a 90 degrees × 90 degrees field of view. The eXTP international consortium includes major institutions of the Chinese Academy of Sciences and Universities in China, as well as major institutions in several European countries and the United States. The predecessor of eXTP, the XTP mission concept, has been selected and funded as one of the so-called background missions in the Strategic Priority Space Science Program of the Chinese Academy of Sciences since 2011. The strong European participation has significantly enhanced the scientific capabilities of eXTP. The planned launch date of the mission is earlier than 2025. © 2016 SPIE.

关键词： Polarimeters

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Chemistry: A single iron site confined in a graphene matrix for the catalytic oxidation of benzene at room temperature

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Science Advances 2015年第11期1卷

作者： Deng, Dehui Chen, Xiaoqi Yu, Liang Wu, Xing Liu, Qingfei Liu, Yun Yang, Huaixin Tian, Huanfang Hu, Yongfeng Du, Peipei Si, Rui Wang, Junhu Cui, Xiaoju Li, Haobo Xiao, Jianping Xu, Tao Deng, Jiao Yang, Fan Duchesne, Paul N. Zhang, Peng Zhou, Jigang Sun, Litao Li, Jianqi Pan, Xiulian Bao, Xinhe State Key Laboratory of Catalysis Collaborative Innovation Center of Chemistry for Energy Materials Dalian Institute of Chemical Physics Chinese Academy of Sciences Zhongshan Road 457 Dalian116023 China SEU-FEI Nano-Pico Center Key Laboratory of MEMS of Ministry of Education School of Electronic Science and Engineering Southeast University Nanjing210096 China Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing100190 China Canadian Light Source Inc. University of Saskatchewan 44 Innovation Boulevard Saskatoon SaskatchewanS7N2V3 Canada Shanghai Synchrotron Radiation Facility Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai201204 China Mössbauer Effect Data Center Dalian Institute of Chemical Physics Chinese Academy of Sciences Zhongshan Road 457 Dalian116023 China Department of Chemistry Dalhousie University HalifaxNSB3H4R2 Canada

Coordinatively unsaturated (CUS) iron sites are highly active in catalytic oxidation reactions;however, maintaining the CUS structure of iron during heterogeneous catalytic reactions is a great challenge. Here, we report a strategy to stabilize single-atom CUS iron sites by embedding highly dispersed FeN4 centers in the graphene matrix. The atomic structure of FeN4 centers in graphene was revealed for the first time by combining high-resolution transmission electron microscopy/high-angle annular dark-field scanning transmission electron microscopy with lowtemperature scanning tunneling microscopy. These confined single-atom iron sites exhibit high performance in the direct catalytic oxidation of benzene to phenol at room temperature, with a conversion of 23.4% and a yield of 18.7%, and can even proceed efficiently at 0°C with a phenol yield of 8.3% after 24 hours. Both experimental measurements and density functional theory calculations indicate that the formation of the Fe-O intermediate structure is a key step to promoting the conversion of benzene to phenol. These findings could pave the way toward highly efficient nonprecious catalysts for low-temperature oxidation reactions in heterogeneous catalysis and electrocatalysis. © 2015 The Authors, some rights reserved.

关键词： Catalytic oxidation

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Integrity constraints in OWL ontologies based on grounded circumscription

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Frontiers of Computer Science 2013年第6期7卷 812-821页

作者： Dantong OUYANG College of Computer Science and Technology Jilin University Changchun 130012 China Key Laboratory of Symbolic Computation and Knowledge Engineering Ministry of Education Changchun 130012 China National Engineering Research Center of Geophysics Exploration Instruments Changchun 130026 China

The extensions for logic-based knowledge bases with integrity constraints are rather popular. We put forward an alternative criteria for analysis of integrity constraints in Web ontology language （OWL） ontology under the closed world assumption. According to this criteria, grounded circumscription is applied to define integrity constraints in OWL ontology and the satisfaction of the integrity constraints by minimizing extensions of the predicates in integrity con- straints. According to the semantics of integrity constraints, we provide a modified tableau algorithm which is sound and complete for deciding the consistency of an extended ontol- ogy. Finally, the integrity constraint validation is converted into the corresponding consistency of the extended ontology. Comparing our approach with existing integrity constraint validation approaches, we show that the results of our approach are more in accordance with user requirements than other approaches in certain cases.

关键词： semantic Web description logic ontology integrity constraints grounded circumscription

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Distance-based feature selection from probabilistic data

Distance-based feature selection from probabilistic data

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14th International Conference on Web-Age Information Management, WAIM 2013

作者： Zhao, Tingting Pei, Bin Zhao, Suyun Chen, Hong Li, Cuiping Key Lab of Data Engineering and Knowledge Engineering Ministry of Education China Department of Computer Science Renmin University of China China

ISBN: (纸本)9783642385612

Feature selection is a powerful tool of dimension reduction from datasets. In the last decade, more and more researchers have paid attentions on feature selection. Further, some researchers begin to focus on feature selection from probabilistic datasets. However, in the existing method of feature selection from probabilistic data, the distance hidden in probabilistic data is neglected. In this paper, we design a new distance measure to select informative feature from probabilistic databases, in which both the distance and randomness in the data are considered. And then, we propose a feature selection algorithm based on the new distance and develop two accelerative algorithms to boost the computation. Furthermore, we introduce a parameter into the distance to reduce the sensitivity to noise. Finally, the experimental results verify the effectiveness of our algorithms. © 2013 Springer-Verlag Berlin Heidelberg.

关键词： Random processes

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MFSV: A truthfulness determination approach for fact statements

MFSV: A truthfulness determination approach for fact stateme...

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18th International Conference on database Systems for Advanced Applications, DASFAA 2013

作者： Wang, Teng Zhu, Qing Wang, Shan Key Laboratory of the Ministry of Education for Data Engineering and Knowledge Engineering Renmin University of China Beijing China School of Information Renmin University of China Beijing China

ISBN: (纸本)9783642374494

How to determine the truthfulness of a piece of information becomes an increasingly urgent need for users. In this paper, we propose a method called MFSV, to determine the truthfulness of fact statements. We first calculate the similarity between a piece of related information and the target fact statement and capture the credibility ranking of the related information through combining importance ranking and popularity ranking. Based on these, contributions of a piece of related information to the truthfulness determination is derived. Then we propose two methods to determine the truthfulness of the target fact statement. At last, we run comprehensive experiments to show MFSV's availability and high accuracy. © Springer-Verlag 2013.

关键词： Computers

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Multi-verifier: A novel method for fact statement verification

Multi-verifier: A novel method for fact statement verificati...

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15th Asia-Pacific Web Conference on Web Technologies and Applications, APWeb 2013

ISBN: (纸本)9783642374005

Untruthful information spreads on the web, which may mislead users or have a negative impact on user experience. In this paper, we propose a method called Multi-verifier to determine the truthfulness of a fact statement. The basic idea is that whether a fact statement is truthful or not depends on the information related to the fact statement. We utilize a popular search engine to collect the top-n search results that are most related to the target fact statement. We then propose support score to measure the extent to which a search result supports the fact statement, and we make use of credibility ranking to rank the search results. At last, we combine the support score and credibility ranking value of a search result to evaluate its contribution to a fact statement determination. Based on the contributions of the search results, we determine the fact statement. Our proposals are evaluated by experiments and results show availability and high precision of the proposed method. © 2013 Springer-Verlag.

关键词： Search engines

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Shape classes registration and retrieval based on shape parts matching

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Journal of Computational Information Systems 2013年第4期9卷 1493-1499页

作者： Wang, Zhenxin Ouyang, Jihong College of Computer Science and Technology Jilin University Changchun 130012 China Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun 130012 China

This paper finds the most expressive segments of a shape category called similar and discriminative parts, which can distinguish the learned shape class from other groups. The proposed model chooses a computationally efficient shape segment metric for similar and discriminative parts matching algorithm, and addition with a strategy for determining the cover parameter β for registering a shape part class. Then we test our method with several benchmark data sets. Copyright © 2013 Binary Information Press.

关键词： Information systems

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Development of a multi-objective genetic algorithm for MDO problem

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Journal of Information and Computational Science 2013年第6期10卷 1603-1612页

作者： Yao, Yifeng Yan, Pu Liu, Dayou College of Computer Science and Technology Jilin University Changchun 130012 China Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun 130012 China

engineering systems have become quite complicated in recent days. The requirements of design are complex and it is hard to meet them by considering only one discipline. In this paper, we suggest a hybrid Multi-objective Genetic Algorithm (MOGA) for a Multidisciplinary Design Optimization (MDO) model in engineering design. In order to get Pareto optimal solutions, we use local search to enhance the efficiency and effectiveness. We solve a problem of airplane wings optimization using MOGA. After compared with other MDO algorithms, we find the result shows that the proposed algorithm's performance has an advantage over previous work for these MDO problems. As the algorithm is evaluated based on practical data, we show that the approach can be used to solve MDO problems in the real world. Copyright © 2013 Binary Information Press.

关键词： Genetic algorithms

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A Hybrid TS-DE Algorithm for Reliability Redundancy Optimization Problem

A Hybrid TS-DE Algorithm for Reliability Redundancy Optimiza...

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The 6th International Conference on Computer Research and Development

作者： Yubao Liu Guihe Qin College of Computer Science and Technology Jilin UniversityChangchunChina College of Computer Science and TechnologyChangchun University College of Computer Science and Technology Jilin UniversityChangchunChina Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of EducationJilin University

In this paper, a hybrid TS-DE algorithm based on Tabu search and differential evolution algorithm is proposed to solve the reliability redundancy optimization problem. A differential evolution algorithm is embedded in Tabu search algorithm. TS is applied for searching solutions space, and DE is used for generating neighborhood solutions. The advantages of both algorithms are considered simultaneously. And an adaptive hybrid TS-DE approach is developed to solve three benchmark reliability redundancy allocation problems. By comparing with other algorithms reported in previous literatures, experimental results show that the proposed method is effective and efficient for solving the reliability redundancy optimization problem.

关键词： nonlinear programming Tabu search differential evolution reliability optimization redundancy allocation

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Fast SimRank computation over disk-resident graphs

Fast SimRank computation over disk-resident graphs

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18th International Conference on database Systems for Advanced Applications, DASFAA 2013

作者： Zhang, Yinglong Li, Cuiping Chen, Hong Sheng, Likun Key Lab of Data Engineering and Knowledge Engineering of Ministry of Education And Department of Computer Science Renmin University of China China JiangXi Agricultural University China

ISBN: (纸本)9783642374494

There are many real-world applications based on similarity between objects, such as clustering, similarity query processing, information retrieval and recommendation systems. SimRank is a promising measure of similarity based on random surfers model. However, the computational complexity of SimRank is high and several optimization techniques have been proposed. In the paper optimization issue of Sim-Rank computation in disk-resident graphs is our primary focus. First we suggest a new approach to compute *** we propose optimization techniques that improve the time cost of the new approach from O (kN2 D2) to O (kNL), where k is the number of iteration, N is the number of nodes, L is the number of edges, and D is the average degree of nodes. Meanwhile, a threshold sieving method is presented to reduce storage and computational cost. On this basis, an external algorithm computing SimRank in disk-resident graphs is introduced. In the experiments, our algorithm outperforms its opponent whose computation complexity also is O (kNL). © Springer-Verlag 2013.

关键词： Search engines

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