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DECIGO: The Japanese space gravitational wave antenna

Journal of Physics: Conference Series 2009年第1期154卷

作者： Sato, Shuichi Kawamura, Seiji Ando, Masaki Nakamura, Takashi Tsubono, Kimio Araya, Akito Funaki, Ikkoh Ioka, Kunihito Kanda, Nobuyuki Moriwaki, Shigenori Musha, Mitsuru Nakazawa, Kazuhiro Numata, Kenji Sakai, Shin-Ichiro Seto, Naoki Takashima, Takeshi Tanaka, Takahiro Agatsuma, Kazuhiro Aoyanagi, Koh-Suke Arai, Koji Asada, Hideki Aso, Yoichi Chiba, Takeshi Ebisuzaki, Toshikazu Ejiri, Yumiko Enoki, Motohiro Eriguchi, Yoshiharu Fujimoto, Masa-Katsu Fujita, Ryuichi Fukushima, Mitsuhiro Futamase, Toshifumi Ganzu, Katsuhiko Harada, Tomohiro Hashimoto, Tatsuaki Hayama, Kazuhiro Hikida, Wataru Himemoto, Yoshiaki Hirabayashi, Hisashi Hiramatsu, Takashi Hong, Feng-Lei Horisawa, Hideyuki Hosokawa, Mizuhiko Ichiki, Kiyotomo Ikegami, Takeshi TInoue, Kaiki Ishidoshiro, Koji Ishihara, Hideki Ishikawa, Takehiko Ishizaki, Hideharu Ito, Hiroyuki Itoh, Yousuke Kawashima, Nobuki Kawazoe, Fumiko Naoko, Kishimoto Kiuchi, Kenta Kobayashi, Shiho Kohri, Kazunori Koizumi, Hiroyuki Kojima, Yasufumi Kokeyama, Keiko Kokuyama, Wataru Kotake, Kei Kozai, Yoshihide Kudoh, Hideaki Kunimori, Hiroo Kuninaka, Hitoshi Kuroda, Kazuaki Maeda, Kei-Ichi Matsuhara, Hideo Mino, Yasushi Miyakawa, Osamu Miyoki, Shinji YMorimoto, Mutsuko Morioka, Tomoko Morisawa, Toshiyuki Mukohyama, Shinji Nagano, Shigeo Naito, Isao Nakamura, Kouji Nakano, Hiroyuki Nakao, Kenichi Nakasuka, Shinichi Nakayama, Yoshinori Nishida, Erina Nishiyama, Kazutaka Nishizawa, Atsushi Niwa, Yoshito Noumi, Taiga Obuchi, Yoshiyuki Ohashi, Masatake Ohishi, Naoko Ohkawa, Masashi Okada, Norio Onozato, Kouji Oohara, Kenichi Sago, Norichika Saijo, Motoyuki Sakagami, Masaaki Sakata, Shihori Sasaki, Misao Sato, Takashi Shibata, Masaru Shinkai, Hisaaki Somiya, Kentaro Sotani, Hajime Sugiyama, Naoshi Suwa, Yudai Suzuki, Rieko Tagoshi, Hideyuki Takahashi, Fuminobu Takahashi, Kakeru Takahashi, Keitaro Takahashi, Ryutaro Takahashi, Ryuichi Takahashi, Tadayuki Takahashi, Hirotaka Akiteru, Takamori Takano, Tadashi Taniguchi, Keisuke Taruya, Atsushi Tashiro, Hiroyuki Torii, Yasuo Toyoshima, Morio Tsujika Faculty of Engineering Hosei University kajinocho Tokyo 184-8584 Japan National Astronomical Observatory Japan Tokyo 181-8588 Osawa 2-21-1 Japan Department of Physics University of Tokyo Tokyo 113-0033 Japan Department of Physics Kyoto University Kyoto 606-8502 Japan Earthquake Research Institute University of Tokyo Tokyo 113-0032 Japan Institute of Space and Astronautical Science Japan Aerospace Exploration Agency (JAXA) Kanagawa 229-8510 Japan Institute of Particle and Nuclear Studies High Energy Accelerator Research Organization (KEK) Ibaraki 305-0801 Japan Department of Physics Osaka City University Osaka 558-8585 Japan Department of Advanced Materials Science University of Tokyo Chiba 277-8561 Japan Institute for Laser Science University of Electro-Communications Tokyo 182-8585 Japan NASA Goddard Space Flight Center CODE 663 Greenbelt MD 20771 8800 Greenbelt Rd. United States Yukawa Institute for Theoretical Physics Kyoto University Kyoto 606-8502 Japan Department of Earth and Environmental Sciences Hirosaki University Aomori 036-8560 Japan California Institute of Technology 1200 E. California Blvd. MC 18-34 Pasadena CA 91125 United States Nihon University Setagaya Tokyo 156-8550 Japan Ochanomizu University 2-1-1 Tokyo 112-0012 Japan Space Educations Center Japan Aerospace Exploration Agency (JAXA) Kanagawa 229-8510 Japan Institute for Cosmic Ray Research University of Tokyo Chiba 277-8582 Japan National Institute of Advanced Industrial Science and Technology (AIST) Ibaraki 305-8563 Japan Department of Aeronautics and Astronautics Tokai University Kanagawa 259-1292 Japan National Institute of Information and Communications Technology (NICT) Tokyo 184-8795 Japan School of Science and Engineering Kinki University Osaka 577-8502 Japan Max-Planck-Institute for Gravitational Physics (Albert-Einstein-Institute) D-30167 Hannover Callinstr. 38 Germany Astrophysics Research Institute Liverpool John Moores University Twelve Quays House Birkenhe

DECi-hertz Interferometer Gravitational wave Observatory (DECIGO) is the planned Japanese space gravitational wave antenna, aiming to detect gravitational waves from astrophysically and cosmologically significant sources mainly between 0.1 Hz and 10 Hz and thus to open a new window for gravitational wave astronomy and for the universe. DECIGO will consist of three drag-free spacecraft, 1000 km apart from each other, whose relative displacements are measured by a differential Fabry-Perot interferometer. We plan to launch DECIGO in middle of 2020s, after sequence of two precursor satellite missions, DECIGO pathfinder and Pre-DECIGO, for technology demonstration required to realize DECIGO and hopefully for detection of gravitational waves from our galaxy or nearby galaxies. © 2009 IOP Publishing Ltd.

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An XML format for benchmarks in high school timetabling 7

An XML format for benchmarks in high school timetabling

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7th International Conference on the Practice and Theory of Automated Timetabling, PATAT 2008

作者： Post, Gerhard Ahmadi, Samad Daskalaki, Sophia Kingston, Jeffrey H. Kyngas, Jari Nurmi, Cimmo Ranson, David Ruizenaar, Henri Department of Applied Mathematics University Twente P.O. Box 217 Enschede7500 AE Netherlands ORTEC Groningenweg 6k Gouda2803 PV Netherlands School of Computer Science De Montfort University Gateway LeicesterLE1 9BH United Kingdom Engineering Sciences Department University of Patras Rio Patras26500 Greece School of Information Technologies University of Sydney Australia Satakunta University of Applied Sciences Tiedepuisto 3 Pori28600 Finland Department of Informatics University of Sussex Falmer BrightonBN1 9QH United Kingdom Stedelijk Lyceum Locatie Kottenpark Lyceumlaan 30 Enschede7522 GK Netherlands

The High School Timetabling Problem is amongst the most widely used timetabling problems. This problem has a varying structure in different high schools even in the same countries or educational systems. Due to lack of standard benchmarks and data formats this problem has been studied less than other timetabling problems in the literature. In this paper we describe the High School Timetabling Problem in several countries in order to find a common set of constraints and objectives. Our main goal is to provide exchangeable benchmarks for this problem. To achieve this we propose a standardisation of data formats suitable for different countries and educational systems. This data model is defined by an xml schema. The schema and datasets are available online. © Practice and Theory of Automated Timetabling, PATAT *** right reserved.

关键词： Scheduling

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Lower and upper approximations in data tables containing possibilistic information

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作者： Nakata, Michinori Sakai, Hiroshi Faculty of Management and Information Science Josai International University 1 Gumyo Togane Chiba 283-8555 Japan Department of Mathematics and Computer Aided Sciences Faculty of Engineering Kyushu Institute of Technology Tobata Kitakyushu 804-8550 Japan

ISBN: (纸本)9783540716624

An extended method of rough sets, called a method of weighted equivalence classes, is applied to a data table containing imprecise values expressed in a possibility distribution. An indiscerniblity degree between objects is calculated. A family of weighted equivalence classes is obtained via indiscernible classes from a binary relation for indiscernibility between objects. Each equivalence class in the family is accompanied by a possibilistic degree to which it is an actual one. By using the family of weighted equivalence classes we derive a lower approximation and an upper approximation. These approximations coincide with those obtained from methods of possible worlds. Therefore, the method of weighted equivalence classes is justified. © Springer-Verlag Berlin Heidelberg 2007.

关键词： Approximation theory

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Calculation of energy-deposition distributions of a ⁹C beam using the PHITS code

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Journal of Physics: Conference Series 2007年第1期74卷 021011-021011页

作者： Mancusi, Davide Sihver, Lembit Niita, Koji Li, Qiang Sato, Tatsuhiko Iwase, Hiroshi Iwamoto, Yosuke Matsuda, Norihiro Sakamoto, Yukio Nakashima, Hiroshi Nuclear Engineering Applied Physics Chalmers University of Technology Gothenburg Sweden Department of Mathematics Computer Science and Physics Roanoke College Salem VA United States Research Organisation for Information Science and Technology Tokai-mura Japan Institute of Modern Physics Chinese Academy of Sciences Lanzhou China Japan Atomic Energy Agency Tokai-mura Japan Radiation Science KEK 305-0801 Tsukuba Oho 1 Japan

Carbon-9 beams represent one of the possible alternatives (presently under consideration and investigation) to conventional 12C beams for heavy-ion cancer treatment. Interest in this exotic isotope stems from the expe...

Carbon-9 beams represent one of the possible alternatives (presently under consideration and investigation) to conventional ¹²C beams for heavy-ion cancer treatment. Interest in this exotic isotope stems from the expected boost in biological effectiveness due to the β-delayed emission of two α particles and a proton that takes place at the ion stopping site. Experiments have been performed [1] to characterise ⁹C beams physically and models have been developed [2] to estimate quantitatively its biological effect. In this work, we have used the PHITS code [3] to calculate energy-deposition and LET distributions for a ⁹C beam in water and we have compared the results with some published data [1]. Even though PHITS fails to reproduce some of the features of the distributions, its result is that decay gives a negligible contribution to the energy-deposition distributions, thus contradicting the previous interpretation of the measured data © 2007 IOP Publishing Ltd.

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Rough sets handling missing values probabilistically interpreted

Rough sets handling missing values probabilistically interpr...

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High-Power Diode Laser Technology and Applications IV

ISBN: (纸本)0819461466

We examine methods of valued tolerance relations where the conventional methods based on rough sets are extended in order to handle incomplete information. The methods can deal with missing values probabilistically interpreted. We propose a correctness criterion to the extension of the conventional methods. And then we check whether or not the correctness criterion is satisfied in a method of valued tolerance relations. As a result, we conclude that the method does not satisfy the correctness criterion. Therefore, we show how to revise the method of valued tolerance relations so that the correctness criterion can be satisfied. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Rough set theory

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Interoperability between AEH user models

Interoperability between AEH user models

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Joint International Workshop on Adaptivity, Personalization and the Semantic Web, APS'06

作者： Stewart, Craig Celik, Ilknur Cristea, Alexandra Ashman, Helen Department of Electronic Engineering Queen Mary University of London Mile End Road London E1 4NS United Kingdom School of Computer Science and Information Technology University of Nottingham Jubilee Campus Wollaton Road Nottingham NG8 1BB United Kingdom Information System Department Faculty of Mathematics and Computing Science Technical University Eindhoven Den Dolech 2 5600 MB Eindhoven Netherlands

ISBN: (纸本)1595934537

Creating a good quality Adaptive Educational Hypermedia (AEH) system involves a great expenditure of time, effort and money, especially to author the materials in order to implement adaptivity. Moreover, authoring AEH systems is as hard as maintaining them. Furthermore, with the new advances in AEH development, the authored content in a given system can become outdated very rapidly. When the massive overhead in authoring is combined with the possibility of the current AEH system becoming unavailable due to lack of maintenance, providing interoperability of adaptive systems becomes necessary. This paper describes our research on providing interoperability of user models between different AEH systems via a one-to-one conversion between two AEH systems, MOT and WHURLE. Here, we identify the differences and commonalities and address how these influence the efficiency of the conversion of the two systems' user models. Although this conversion is done via simple peer-to-peer interaction, it can be easily extended to make use of semantic web technologies, as for example RDF or XML conversion formats, or web services for user model exchange. Therefore, we consider that our work on feature extractions sets the basis for such conversions for the Web and Semantic Web. Copyright 2006 ACM.

关键词： Education

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Interoperable adaptive educational hypermedia: A web service definition

Interoperable adaptive educational hypermedia: A web service...

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6th International Conference on Advanced Learning Technologies, ICALT 2006

作者： Meccawy, Maram Celik, Ilknur Cristea, Alexandra Stewart, Craig Ashman, Helen School of Computer Science and Information Technology University of Nottingham Jubilee Campus Wollaton Road Nottingham NG8 1BB United Kingdom Information System Department Faculty of Mathematics and Computing Science Technical University Eindhoven Den Dolech 2 5600 MB Eindhoven Netherlands Department of Electronic Engineering Queen Mary University of London Mile End Road London El 4NS United Kingdom

ISBN: (纸本)0769526322

This paper presents an approach to resolve the problem of authoring and interchanging educational material, based on web services. Here we describe the ultimate goal, of reusing and interchanging freely adaptive eleaming material, shortly sketch previous solutions, showing their benefits but also limitations and then introduce our web-service based approach. Finally, we discuss the gains brought by our proposed solution. © 2006 IEEE.

关键词： E-learning

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Adaptivity, personalization, and the semantic Web

Adaptivity, personalization, and the semantic Web

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Joint International Workshop on Adaptivity, Personalization and the Semantic Web, APS'06

作者： Cristea, Alexandra Stewart, Craig Sirmakessis, Spiros Information System Department Faculty of Mathematics and Computing Science Technical University Eindhoven Den Dolech 2 5600 MB Eindhoven Netherlands Department of Electronic Engineering Queen Mary University of London Mile End Road London E1 4NS United Kingdom Research Academic Computer Technology Institute D. Maritsas Building N. Patras University Campus Kazantzaki Str. Patras Greece

ISBN: (纸本)1595934537

The aim of this workshop is to bring together researchers and practitioners in the fields of web engineering, adaptive hypermedia, semantic web technologies, knowledge management, information retrieval, user modelling, and other related disciplines which provide enabling technologies for personalization and adaptation on the World Wide Web. The workshop will consist of 6 papers (4 full, and 2 short), followed by a panel discussion.

关键词： Semantic Web

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On adjacent-vertex-distinguishing total coloring of graphs

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science China mathematics 2005年第3期48卷 289-299页

作者： ZHANG Zhongfu, CHEN Xiang’en, LI Jingwen, YAO Bing, LU Xinzhong & WANG Jianfang College of mathematics and information science, Northwest Normal University, Lanzhou 730070, China department of computer, Lanzhou Normal College, Lanzhou 730070, China Institute of Applied mathematics, Lanzhou Jiaotong University, Lanzhou 730070, China College of information and Electrical engineering, Lanzhou Jiaotong University, Lanzhou 730070, China Institute of Applied mathematics, Chinese Academy of sciences, Beijing 100080, China 1. College of Mathematics and Information Science Northwest Normal University 730070 Lanzhou China 2. Department of Computer Lanzhou Normal College 730070 Lanzhou China 3. Institute of Applied Mathematics Lanzhou Jiaotong University 730070 Lanzhou China 4. College of Information and Electrical Engineering Lanzhou Jiaotong University 730070 Lanzhou China 5. Institute of Applied Mathematics Chinese Academy of Sciences 100080 Beijing China

In this paper, we present a new concept of the adjacent-vertex-distinguishing total coloring of graphs (briefly, AVDTC of graphs) and, meanwhile, have obtained the adjacent-vertex-distinguishing total chromatic number... 详细信息

关键词： graph, proper total coloring, adjacent-vertex-distinguishing total coloring, adjacent-vertex-distinguishing total chromatic number.

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On the recognition of probe graphs of some self-complementary classes of perfect graphs

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11th Annual International Conference on Computing and Combinatorics, COCOON 2005

作者： Chang, Maw-Shang Kloks, Ton Kratsch, Dieter Liu, Jiping Peng, Sheng-Lung Department of Computer Science and Information Engineering National Chung Cheng University Chiayi 621 Taiwan Université de Metz LITA 57045 Metz Cedex 01 France Department of Mathematics and Computer Science University of Lethbridge Alta. T1K 3M4 Canada Department of Computer Science and Information Engineering National Dong Hwa University Hualien 974 Taiwan

ISBN: (纸本)9783540280613

In this paper we consider the recognition of some probe graph classes. Given a class of graphs G, a graph G is a probe graph of G if its vertices can be partitioned into a set of probes and an independent set of nonprobes, such that G can be extended to a graph of G by adding edges between certain nonprobes. We show that there are polynomial-time recognition algorithms for probe cographs, probe P4-reducible graphs, probe P 4-sparse graphs, and probe splitgraphs. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Graph theory

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