Katsunori Shimohara

Doshisha University

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Ivan Tanev

Doshisha University

143

Takamasa Iio

Advanced Telecommunications Research Institute International

Keiki Takadama

The University of Tokyo

Masahiro Shiomi

Advanced Telecommunications Research Institute International

Mitsuhiko Kimoto

Doshisha University

Yurika Shiozu

Kyoto Sangyo University

Jian‐Qin Liu

Southwest Medical University

Madoka Takahara

Ryukoku University

Norihiro Hagita

Osaka University of Arts

Osamu Katai

Kyoto University

Cooperative Institutions

Doshisha University

Tokyo University of Science

Tokyo City University

University of Crete

Advanced Telecommunications Research Institute International

FORTH Institute of Computer Science

NTT (Japan)

Kyoto University

Osaka University

The University of Tokyo

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Challenge to Complexity; (11). Artificial Life. (II). Applications and Perspectives for Information Processing.

The Journal of the Institute of Television Engineers of Japan (1996)

Katsunori Shimohara

Artificial life

10.3169/itej1978.50.1746

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Citations (1)

Link prediction of complex networks from temporal quantity variation assigned to elements

Tetsuya Maeshiro Hitoshi Hemmi Shinichi Nakayama Katsunori Shimohara

This paper presents a method to predict gene regulatory networks from gene expression time course data, where each gene has multiple types of quantity values and each quantity type might be influenced by all other quantity types. This problem is considerably harder than the prediction from time course data of only one quantity type. The method is based on a ultra high speed gene network simulator Starpack and evolutionary mechanisms. The prediction is a combination of two stage loop, each stage using evolutionary mechanism. Networks are simulated with Starpack, and those producing time course data similar to the target gene expression data are selected as candidates. The simulation of the second stage has higher precision than the first stage, serving as local optimization process. A synthetic network was used for evaluation, and results suggest necessity of improvements.

Variation (astronomy)

Expression (computer science)

Gene regulatory network

10.1109/sice.2008.4654896

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On Ladders' complexity mechanism and quantitative regulation of scalable molecular computers by Rho family GTPases

J.-Q. Liu Katsunori Shimohara

We propose a new bio-molecular computing method based on Rho family GTPases, and report that the Ladders' complexity increasing phenomenon is observed when molecular computing by Rho family GTPases is applied to solve large-scale 3-SAT problems. We also present the optimal condition for the regulation scheme as Pg=h Pl/Ql where Pg is the probability of global communication among the sub-pathways, Pl is the probability of local communication in the sub-pathways within the domain of the neighborhood, and h is the experimental coefficient dependent on the temperature, kinase activity and sorts of cells.

10.1109/nano.2002.1032257

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Organizational learning model for adaptive collective behaviors in multiple robots

Advanced Robotics (1997)

Keiki Takadama Koichiro Hajiri Tatsuya Nomura Katsunori Shimohara Shinichi Nakasuka

This paper proposes a novel organizational learning model in which multiple robots acquire their own functions for adaptive collective behaviors through local interactions among their neighbors and form an organizational structure to complete given tasks without global explicit control mechanisms or communication methods. In this paper, we focus on emergent processes in which robots dynamically form an organizational structure by acquiring their own appropriate functions to complete given tasks effectively and also focus on how organizational knowledge supports robots to reform their organizational structure. Through intensive simulations of truss construction by multiple robots, the following experimental results have suggested: (1) robots in our model acquire their own appropriate functions without global explicit control mechanisms or communication methods and form an organizational structure which completes given tasks in less steps than those with a centralized control system, and (2) organizational ...

10.1163/156855398x00172

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Case Study on Motivation to Participate in Private Provision of Local Public Goods and Time Spent in the Region Measured Using GPS

Lecture notes in computer science (2018)

Yurika Shiozu Koya Kimura Katsunori Shimohara Katsuhiko Yonezaki

Local Community

10.1007/978-3-319-92046-7_16

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Gaze and Height Design for Acceptable Touch Behaviors

CRC Press eBooks (2024)

Masahiro Shiomi Takahiro Hirano Mitsuhiko Kimoto Takamasa Iio Katsunori Shimohara

This study investigates the effects of two communication cues related to robot-initiated touch behaviors: gaze height for making eye contact and speech timing. We developed a robot system that can touch people in bed using a touch sensor, and we used it to experimentally investigate the effects of communication cues. Our experiment results showed that before-touch timing speech is preferred to after-touch timing speech. On the other hand, we found no significant differences in the gaze height at which eye contact should be made.

10.1201/9781003384274-15

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T2-3 A New Computational Architecture for Ultra-High Speed Network Simulation

Keisan Rikigaku Koenkai koen ronbunshu/Keisan Rikigaku Kouenkai kouen rombunshuu (2007)

Hitoshi Hemmi Tetsuya Maeshiro Katsunori Shimohara

10.1299/jsmecmd.2007.20.56

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Counter Example for Q-Bucket-Brigade Under Prediction Problem

Lecture notes in computer science (2007)

Atsushi Wada Keiki Takadama Katsunori Shimohara

10.1007/978-3-540-71231-2_10

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Willingness to pay for community bus services: A Japanese case study

Yurika Shiozu Koya Kimura Katsunori Shimohara Katshuhiko Yonezaki

This study aims to predict the demand for local public goods by local residents and to consider ways to promote diversification of the cost burden on supply. We employ a questionnaire survey on issues of current interest from the viewpoint of the cost burden associated with the operation of a community bus service. The survey's results showed that non-contact IC cards for mobile phones were almost never used. There was also a certain level of support toward collecting expenses through fares rather than through annual payments.

10.23919/sice.2017.8105521

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A Study of Computer Agents to Help Younger Children

IFAC Proceedings Volumes (1998)

Yoshie Souteme Sagata Katsunori Shimohara Yoshinobu Tonomura

10.1016/s1474-6670(17)40069-3

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