KEIO SFC JOURNAL - Vol.7 No.2 2007



CONTENTS
INVITED PAPERS
Social Infrastructure for Sustainable Mobility
Hironao Kawashima
Professor, Faculty of Science and Technology, Keio University
The 21st Century Technology and Electric Vehicles
Hiroshi Shimizu
Professor, Faculty of Environment and Information Studies, Keio University
Expectation to LRT from the Universal Transportation Viewpoint
Makoto Arisawa
Professor, Faculty of Environment and Information Studies, Keio University
RESEARCH PAPERS
Development and Evaluation of Data Transmission Algorithms for Decentralized Vehicle Probing Systems
Takaaki Ishida
Research Associate, Research Institute for Digital Media and Content, Keio University
Masaaki Sato
Research Associate, Graduate School of Media and Governance, Keio University
Masayoshi Imaike
CEO, FEAC International Corp.
Ryota Horiguchi
CEO, i-Transport Lab. Co., Ltd.
Koji Wada
Chief Researcher, ITS Center of Japan Automobile Research Institute
Keisuke Uehara
Associate Professor, Graduate School of Media and Governance, Keio University
Jun Murai
Professor, Faculty of Environment and Information Studies, Keio University
A Study on the Relationship between Controlled Publications and Popular Ideas in Late Chosun Dynasty − The diffusion and regulation of Seohak and Donghak
Yoon Hanna
Doctoral Program, Graduate School of Media and Governance, Keio University
Implications of Pragmatism in English Educational Theory − A new paradigm of English education derived from R. Rorty,s 'ethnocentrism and lexicology'
Tsukasa Yamanaka
Doctoral Program, Graduate School of Media and Governance, Keio University
Research Fellow of the Japan Society for the Promotion of Science (DC2)
La justice pénale en démocratie − Une réflexion d'Alexis de Tocqueville sur le système pénitentiaire
Yasutake Miyashiro
Doctoral School, Political Philosophy and Ethics, University of Paris- Sorbonne (Paris IV)
A User Participatory Exhibition Design in Zoo
Yutaro Ohashi
Doctoral Program, Graduate School of Media and Governance, Keio University
Hideaki Ogawa
Artist & Creator, Artist in Residence, Ars Electronica Future Lab
Taizo Zushi
Representative Director, aery Co.,Ltd.
Shuichi Nagata
Doctral Program, Graduate School of Media and Governance, Keio University
Makoto Arisawa
Professor, Faculty of Environment and Information Studies, Keio University
Structuring and Evaluation of TV Dramas − Analysis and interpretation of free answers using text mining
Sae Seno
Doctoral Program, Graduate School of Media and Governance, Keio University
RESEARCH NOTES
Linear Ordinary Differential Equations and Fermat Equations
Keiji Nishioka
Professor, Faculty of Environment and Information Studies, Keio University
Significance in the Assessment of the Conceptual Structure that Uses Association Experiments for Schizophrenics − The number of words and distance between concepts
Kai Seino
Doctoral Program, Graduate School of Media and Governance, Keio University
Research Fellow of the Japan Society for the Promotion of Science
ABSTRACT
INVITED PAPERS
  • Social Infrastructure for Sustainable Mobility
    Hironao Kawashima
    Professor, Faculty of Science and Technology, Keio University

    Reduction of environmental load is an unavoidable factor for considering the future of mobility. In order to harmonize the conflicting factors, not only the technological developments in the transport sector but also various institutional and organizational issues should be considered. From the perspective of international standardization, the issues related to attain sustainable mobility are discussed based on the interaction between ICT and road transport which has been materialized in ITS.
    Download this Article (PDF) 14pages/0.83MB/Japanese
  • The 21st Century Technology and Electric Vehicles
    Hiroshi Shimizu
    Professor, Faculty of Environment and Information Studies, Keio University

    An electric vehicle has a potential to solve the global warming dramatically. Lithium-ion battery, permanent magnet motor and high efficient transistor were invented. Those are the application of quantum mechanics and commercialized at the beginning of the 21st century. The integrated platform for an electric vehicle is the useful structure to apply the 21st century technology. High acceleration feeling, space and comfort could be realized by the technology. A super electric vehicle Eliica was developed by using the technology. Electric vehicle will extend to automatic driving to build a new community.
    Download this Article (PDF) 10pages/0.49MB/Japanese
  • Expectation to LRT from the Universal Transportation Viewpoint
    Makoto Arisawa
    Professor, Faculty of Environment and Information Studies, Keio University

    Automobile dependent city transportation system has serious defects, and such problem will be tackled fron public transportaion network including new generation Light Rail Transit. Transit mall and compact city planning are in the same perspectives. In some Europe and US cities, as well as some Japanese middle sized cities, this is becoming a future trend.
    Download this Article (PDF) 8pages/0.58MB/Japanese
RESEARCH PAPERS
  • Development and Evaluation of Data Transmission Algorithms for Decentralized Vehicle Probing Systems
    Takaaki Ishida
    Research Associate, Research Institute for Digital Media and Content, Keio University
    Masaaki Sato
    Research Associate, Graduate School of Media and Governance, Keio University
    Masayoshi Imaike
    CEO, FEAC International Corp
    Ryota Horiguchi
    CEO, i-Transport Lab. Co., Ltd
    Koji Wada
    Chief Researcher, ITS Center of Japan Automobile Research Institute
    Keisuke Uehara
    Associate Professor, Graduate School of Media and Governance, Keio University
    Jun Murai
    Professor, Faculty of Environment and Information Studies, Keio University

    Decentralized Vehicle Probing System (which we call "Centerless Probe Car Information System") is a probe car information system that requires neither centralized servers nor network infrastructure for generating and delivering probe data. Since it utilizes inter-vehicle communication using short range Wireless LAN devices without connecting to wide area networks for data transmission, unified transmission algorithms are required to be shared among vehicles to forward the data to the adequate area. We developed transmission algorithms to realize fundamental propagation models for general probe car information systems. By simulating situations where the system is used for road-traffic-information-providing service in western area of Tokyo at the installation phase of our system, we have confirmed that the algorithms worked effectively in the process of collection and integration of probe data.
  • A Study on the Relationship between Controlled Publications and Popular Ideas in Late Chosun Dynasty − The diffusion and regulation of Seohak and Donghak
    Yoon Hanna
    Doctoral Program, Graduate School of Media and Governance, Keio University

    Several types of control had been introduced by the Establishment to prevent the social transformation led by the popularization of "Seohak" and "Donghak appeared in the late Chosun period. In this research, I have analyzed what measures were chosen and exercised by the Chosun Dynasty in the purpose of controlling common thought by describing how the publication and distribution of books are regulated in the late Chosun period. This analysis is based on the literal descriptions found in historical materials.
    Download this Article (PDF) 12pages/0.89MB/Japanese
  • Implications of Pragmatism in English Educational Theory − A new paradigm of English education derived from R. Rorty,s 'ethnocentrism and lexicology'
    Tsukasa Yamanaka
    Doctoral Program, Graduate School of Media and Governance, Keio University
    Research Fellow of the Japan Society for the Promotion of Science (DC2)

    English education in Japan has been in the midst of drastic change from the latter half of the twentieth century onwards and those engaged in the field should now engage in far-reaching debate in the light of this possible paradigm shift in English education, rather than merely considering issues of practicality and efficiency. This article considers a new paradigm in English education in Japan from the perspective of pragmatism, both theoretically and practically. Reinterpreting Rorty's "philosophy of hope" in the context of English education, this article affirms the significance of a project-oriented English education method where messages are transmitted according to the interests and values of the individual.
    Download this Article (PDF) 12pages/0.50MB/Japanese
  • La justice pénale en démocratie − Une réflexion d'Alexis de Tocqueville sur le système pénitentiaire
    Yasutake Miyashiro
    Doctoral School, Political Philosophy and Ethics, University of Paris- Sorbonne (Paris IV)

    Comment penser la justice pénale en démocratie? Comment appliquer les principes du libéralisme au système carcéral? Comment concevoir une limitation juridique compatible avec la société libre? Dans cet article, nous abordons ces questions en mettant la philosophie pénale d' Alexis de Tocqueville au centre de nos interrogations. La problématique majeure tourne autour d' un double pôle : la neutralité de l' État d' une part et, d' autre part, la décentralisation en tant que réforme institutionnelle. Autrement dit, il s' agit d' une réflexion à la fois théorique et pratique sur la philosophie juridico-politique appliquée à la sphère de la justice pénale en tenant compte des aspects historiques.
    Download this Article (PDF) 16pages/0.39MB/French
  • A User Participatory Exhibition Design in Zoo
    Yutaro Ohashi
    Doctoral Program, Graduate School of Media and Governance, Keio University
    Hideaki Ogawa
    Artist & Creator, Artist in Residence, Ars Electronica Future Lab
    Taizo Zushi
    Representative Director, aery Co.,Ltd.
    Shuichi Nagata
    Doctral Program, Graduate School of Media and Governance, Keio University
    Makoto Arisawa
    Professor, Faculty of Environment and Information Studies, Keio University

    In this research, we implemented a new way of exhibition design, which contains mobile technology, network technology and various data in the theme of "Exhibition design, which users can participate in the exhibition in a zoo". In the concrete, we held an exhibition, which called "Being exhibition" from 26th April to 6th May in Inokashira Park Zoo in Tokyo. In the exhibition, several systems realized "Information-based exhibition", which expand the idea of"Activity-based exhibition", the most popular way to exhibit in zoo, with information technology. According to the evaluation on each system, we found that a number of the participants who made positive assessments were statistically-meaningful.
  • Structuring and Evaluation of TV Dramas − Analysis and interpretation of free answers using text mining
    Sae Seno
    Doctoral Program, Graduate School of Media and Governance, Keio University

    It becomes realistic to get an amount of information which could not be possible until recently. This article presents a quantitative and interpretive analytical method for large amount of free answers from the Internet about TV dramas. Firstly TV dramas are structured quantitatively by the automatic classification of free answers and clustering of TV dramas. Secondly factors expected from audience are picked out interpretively by comparative analysis of the structure of TV drama using TextImi and Key Graph. From the above results, we evaluate TV dramas based on various needs of audiences.
    Download this Article (PDF) 16pages/1.62MB/Japanese
RESEARCH NOTES
  • Linear Ordinary Differential Equations and Fermat Equations
    Keiji Nishioka
    Professor, Faculty of Environment and Information Studies, Keio University

    A theorem analogous to Picard's theorem on representation of a plane algebraic curve of genus greater than 1 with meromorphic functions will be proved. Its enunciation will be done for elements in a Fuchsian extension defined in this note instead of considering for meromorphic functions. As seen straightforwardly, a differential extension generated with solutions of linear ordinary differential equations turns out to be Fuchsian, hence the theorem deduces a corollary that solutions of linear ordinary differential equations substaintially satisfy no Fermat equations.
    Download this Article (PDF) 4pages/0.20MB/English
  • Significance in the Assessment of the Conceptual Structure that Uses Association Experiments for Schizophrenics − The number of words and distance between concepts
    Kai Seino
    Doctoral Program, Graduate School of Media and Governance, Keio University
    Research Fellow of the Japan Society for the Promotion of Science

    This research examined conceptual structures of schizophrenic patients' semantic memories. It employed an associative concept dictionary which was built by using large-scale association experiments to simulate the semantic memories. From the association experiments, (1) the total number of associated words, (2) number of different associated words among the total number, and (3) the decrease rate were obtained and used to examine the relationships between the memories and the dictionary. In addition, the correlation coefficients of distances between concepts in the following three groups, schizophrenic patients, controls, and the associative concept dictionary, were examined to show the validity of this research. It was suggested that there be limited and overspecialized knowledge with regard to the schizophrenic patients.


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