友介 小山 | Shibaura Institute of Technology (original) (raw)

Papers by 友介 小山

Research paper thumbnail of Arcade Games (3) The Impact of Virtua Fighter and Ridge Racer: The Last Splendor of Arcade Games

History of the Japanese Video Game Industry

Research paper thumbnail of 相互作用の本質にせまる~知的システムの理解と設計の新視点~人間‐人間間相互作用

Journal of The Society of Instrument and Control Engineers, 2005

Research paper thumbnail of スーパーマーケット内協働への介入実験(投稿論文)

Social and Economic Systems Studies: The Journal of the Japan Association for Social and Economic Systems Studies, 2002

Research paper thumbnail of 初音ミク : N次創作が拓く新しい世界

Systems, Control and Information, 2013

Research paper thumbnail of Agent base simulation for estimating the medical expence

Research paper thumbnail of VSmart: A Virtual Stock Market as a Forum for Market Structure Analysis and Engineering

Research paper thumbnail of Evaluation of Collaborative Filtering by Agent-Based Simulation Considering Market Environment

We propose a new evaluation approach for collaborative filtering, a kind of recommendation algori... more We propose a new evaluation approach for collaborative filtering, a kind of recommendation algorithm through agent-based simulation. We modeled a virtual E-commerce market where we evaluated the collaborative filtering algorithm. Our findings were as follows: 1) the number of neighbors is a key parameter and there is a trade-off due to market circumstances, 2) a bigger number of neighbors performed better, with a tendency that was independent of the degree of clustering of consumer preferences, 3) if there were any high-frequency purchasers, a smaller number of neighbors performed better.

Research paper thumbnail of Output dynamics and (s, S) strategies in an agent based macroeconomic model

Research paper thumbnail of Human and Agent Playing the “Beer Gameâ€

Developments in Business Simulation and Experiential Learning, 2014

The supply chain, impacted by production strategies and stock-up or addendum policies, often caus... more The supply chain, impacted by production strategies and stock-up or addendum policies, often causes information confusion and forms the bullwhip effect. Instructors were often only able to talk about the various types of strategies and influences imposed by various business performance indexes when lecturing on the supply chain management courses. Although, by developing a ‘beer game’ information system (MIT Forum has its Web-based version), the Northwestern University in U.S. has addressed that the problems of supply chain are solved and whoever interested in supply chain can participate in the beer game and learn about the supply chain through playing. However, the fixed and un-modifiable imitative setup and system parameters that could not be flexibly adjusted by the instructors were indeed the biggest weakness of the game. As the result, this paper has proposed an agent based beer game which enables not only for instructors to set supply chain scale freely or imitate various...

Research paper thumbnail of Design of a Hybrid-Learning Environment Based on SOARS

Third International Conference on Creating, Connecting and Collaborating through Computing (C5'05)

ABSTRACT Recent development in bottom-up modeling, through educational games, enables students to... more ABSTRACT Recent development in bottom-up modeling, through educational games, enables students to understand overview of complicated socioeconomic systems. We apply SOARS (Spot Oriented Agent Role Simulator) for designing hybrid-learning environment. In the hybrid-learning environment, both of students and computer agents interact each other and learn socioeconomic systems simultaneously.

Research paper thumbnail of Unveiling the Hidden Star Formation Activity in and around Distant Clusters of Galaxies with AKARI

Research paper thumbnail of 進化経済学の道具箱 : 代替パラダイムの構築は可能か?(大会報告論文:システムのリスクと安全を考える)

Research paper thumbnail of Key Stone Project VLBI Stations (Kashima, Koganei, Miura, and Tateyama)

Research paper thumbnail of Survey of the adjourned sale rate of the Japanese home video game industry

Research paper thumbnail of Near-infrared FT-Raman spectroscopy of living photosynthetic bacteria

SPIE Proceedings, 1993

ABSTRACT Near-infrared (NIR) excited FT-Raman spectra were measured in vivo for whole living phot... more ABSTRACT Near-infrared (NIR) excited FT-Raman spectra were measured in vivo for whole living photosynthetic bacteria. Rhodobacter (Rb.) sphaeroides G1C and R26 and Chlorobium (C.) limicola f. thiosulfatophilum. The obtained spectra, which were preresonanced with the Qy bands of bacteriochlorophyll-a (BChl-a) or bacteriochlorophyll-c (BChl-c), did not contain contributions from major components of the bacteria such as proteins and lipids, and therefore, provided selectively structural information about BChl-a in the light-harvesting (LH) complexes (Rb. sphaeroides) or BChl-c in the chlorosome (C. limicola f. thiosulfatophilum) in a totally nondestructive manner.

Research paper thumbnail of Charge ordering and lattice-spin dimerization in CuIr2S4

By using a combination of electron, neutron and x-ray diffraction data, we have determined the ac... more By using a combination of electron, neutron and x-ray diffraction data, we have determined the accurate crystallographic structure of the spinel CuIr_2S4 below the simultaneous metal-insulator and paramagnetic-diamagnetic transition at 230 K. Our results indicate that CuIr_2S4 is the first three-dimensional compound to undergo a simultaneous charge ordering and spin-lattice dimerisation transition, which explains the evolution of the transport and

Research paper thumbnail of Anti Pandemic Simulation by SOARS

2006 SICE-ICASE International Joint Conference, 2006

Research paper thumbnail of Release Delay Trends in the Japanese Console Game Industry

Dejitaru gemugaku kenkyu, 2008

Research paper thumbnail of The Preference of Payment of Game Players in the Cross-Platform Era: A Survey of Smartphone Users in Japan, the UK, China

Policies and Challenges of the Broadband Ecosystem in Japan

Research paper thumbnail of U-Mart as a New Generation Artificial Market

Evolutionary and Institutional Economics Review, 2008

... 36, 252–265 Epstein, J. and R. Axtell (1996) Growing artificial societies: social science fro... more ... 36, 252–265 Epstein, J. and R. Axtell (1996) Growing artificial societies: social science from the bottom up, MIT Press, Cambridge, MA. ... Koyama, Y., K. Ishiyama, H. Kaneko, I. Ono and H. Matsui (2007) “Using U-mart Sysytem for the lecture of economics,” in T. Terano, H. Kita, H ...

Research paper thumbnail of Arcade Games (3) The Impact of Virtua Fighter and Ridge Racer: The Last Splendor of Arcade Games

History of the Japanese Video Game Industry

Research paper thumbnail of 相互作用の本質にせまる~知的システムの理解と設計の新視点~人間‐人間間相互作用

Journal of The Society of Instrument and Control Engineers, 2005

Research paper thumbnail of スーパーマーケット内協働への介入実験(投稿論文)

Social and Economic Systems Studies: The Journal of the Japan Association for Social and Economic Systems Studies, 2002

Research paper thumbnail of 初音ミク : N次創作が拓く新しい世界

Systems, Control and Information, 2013

Research paper thumbnail of Agent base simulation for estimating the medical expence

Research paper thumbnail of VSmart: A Virtual Stock Market as a Forum for Market Structure Analysis and Engineering

Research paper thumbnail of Evaluation of Collaborative Filtering by Agent-Based Simulation Considering Market Environment

We propose a new evaluation approach for collaborative filtering, a kind of recommendation algori... more We propose a new evaluation approach for collaborative filtering, a kind of recommendation algorithm through agent-based simulation. We modeled a virtual E-commerce market where we evaluated the collaborative filtering algorithm. Our findings were as follows: 1) the number of neighbors is a key parameter and there is a trade-off due to market circumstances, 2) a bigger number of neighbors performed better, with a tendency that was independent of the degree of clustering of consumer preferences, 3) if there were any high-frequency purchasers, a smaller number of neighbors performed better.

Research paper thumbnail of Output dynamics and (s, S) strategies in an agent based macroeconomic model

Research paper thumbnail of Human and Agent Playing the “Beer Gameâ€

Developments in Business Simulation and Experiential Learning, 2014

The supply chain, impacted by production strategies and stock-up or addendum policies, often caus... more The supply chain, impacted by production strategies and stock-up or addendum policies, often causes information confusion and forms the bullwhip effect. Instructors were often only able to talk about the various types of strategies and influences imposed by various business performance indexes when lecturing on the supply chain management courses. Although, by developing a ‘beer game’ information system (MIT Forum has its Web-based version), the Northwestern University in U.S. has addressed that the problems of supply chain are solved and whoever interested in supply chain can participate in the beer game and learn about the supply chain through playing. However, the fixed and un-modifiable imitative setup and system parameters that could not be flexibly adjusted by the instructors were indeed the biggest weakness of the game. As the result, this paper has proposed an agent based beer game which enables not only for instructors to set supply chain scale freely or imitate various...

Research paper thumbnail of Design of a Hybrid-Learning Environment Based on SOARS

Third International Conference on Creating, Connecting and Collaborating through Computing (C5'05)

ABSTRACT Recent development in bottom-up modeling, through educational games, enables students to... more ABSTRACT Recent development in bottom-up modeling, through educational games, enables students to understand overview of complicated socioeconomic systems. We apply SOARS (Spot Oriented Agent Role Simulator) for designing hybrid-learning environment. In the hybrid-learning environment, both of students and computer agents interact each other and learn socioeconomic systems simultaneously.

Research paper thumbnail of Unveiling the Hidden Star Formation Activity in and around Distant Clusters of Galaxies with AKARI

Research paper thumbnail of 進化経済学の道具箱 : 代替パラダイムの構築は可能か?(大会報告論文:システムのリスクと安全を考える)

Research paper thumbnail of Key Stone Project VLBI Stations (Kashima, Koganei, Miura, and Tateyama)

Research paper thumbnail of Survey of the adjourned sale rate of the Japanese home video game industry

Research paper thumbnail of Near-infrared FT-Raman spectroscopy of living photosynthetic bacteria

SPIE Proceedings, 1993

ABSTRACT Near-infrared (NIR) excited FT-Raman spectra were measured in vivo for whole living phot... more ABSTRACT Near-infrared (NIR) excited FT-Raman spectra were measured in vivo for whole living photosynthetic bacteria. Rhodobacter (Rb.) sphaeroides G1C and R26 and Chlorobium (C.) limicola f. thiosulfatophilum. The obtained spectra, which were preresonanced with the Qy bands of bacteriochlorophyll-a (BChl-a) or bacteriochlorophyll-c (BChl-c), did not contain contributions from major components of the bacteria such as proteins and lipids, and therefore, provided selectively structural information about BChl-a in the light-harvesting (LH) complexes (Rb. sphaeroides) or BChl-c in the chlorosome (C. limicola f. thiosulfatophilum) in a totally nondestructive manner.

Research paper thumbnail of Charge ordering and lattice-spin dimerization in CuIr2S4

By using a combination of electron, neutron and x-ray diffraction data, we have determined the ac... more By using a combination of electron, neutron and x-ray diffraction data, we have determined the accurate crystallographic structure of the spinel CuIr_2S4 below the simultaneous metal-insulator and paramagnetic-diamagnetic transition at 230 K. Our results indicate that CuIr_2S4 is the first three-dimensional compound to undergo a simultaneous charge ordering and spin-lattice dimerisation transition, which explains the evolution of the transport and

Research paper thumbnail of Anti Pandemic Simulation by SOARS

2006 SICE-ICASE International Joint Conference, 2006

Research paper thumbnail of Release Delay Trends in the Japanese Console Game Industry

Dejitaru gemugaku kenkyu, 2008

Research paper thumbnail of The Preference of Payment of Game Players in the Cross-Platform Era: A Survey of Smartphone Users in Japan, the UK, China

Policies and Challenges of the Broadband Ecosystem in Japan

Research paper thumbnail of U-Mart as a New Generation Artificial Market

Evolutionary and Institutional Economics Review, 2008

... 36, 252–265 Epstein, J. and R. Axtell (1996) Growing artificial societies: social science fro... more ... 36, 252–265 Epstein, J. and R. Axtell (1996) Growing artificial societies: social science from the bottom up, MIT Press, Cambridge, MA. ... Koyama, Y., K. Ishiyama, H. Kaneko, I. Ono and H. Matsui (2007) “Using U-mart Sysytem for the lecture of economics,” in T. Terano, H. Kita, H ...