• Title/Summary/Keyword: Saga

Search Result 324, Processing Time 0.027 seconds

Dynamic Model for Ocean Thermal Energy Conversion Plant with Working Fluid of Binary Mixtures

  • Nakamura, Masatoshi;Zhang, Yong;Bai, Ou;Ikegami, Yasuyuki
    • 제어로봇시스템학회:학술대회논문집
    • /
    • 2003.10a
    • /
    • pp.2304-2308
    • /
    • 2003
  • Ocean thermal energy conversion (OTEC) is an effective method of power generation, which has a small impact on the environment and can be utilized semi-permanently. This paper describes a dynamic model for a pilot OTEC plant built by the Institute of Ocean Energy, Saga University, Japan. This plant is based on Uehara cycle, in which binary mixtures of ammonia and water is used as the working fluid. Some simulation results attained by this model and the analysis of the results are presented. The developed computer simulation can be used to actual practice effectively, such as stable control in a steady operation, optimal determination of the plant specifications for a higher thermal efficiency and evaluation of the economic prospects and off-line training for the operators of OTEC plant.

  • PDF

Development of a hazard map creation support system with community participation type using positional information

  • Mori, Seina;Okazaki, Yasuhisa;Wakuya, Hiroshi;Mishima, Nobuo;Hayashida, Yukuo;Min, Byung-Won
    • Proceedings of the Korea Contents Association Conference
    • /
    • 2015.05a
    • /
    • pp.11-12
    • /
    • 2015
  • This paper describes development of a system that can create a hazard map by residents in order to prepare for disaster in daily life. This system make a hazard map by displaying the community-based disaster information on the map. Residents register information about the spot (a disaster type, a risk level, a photo, comments, positional information) that can be dangerous in case disaster. We think that residents can share information while having fan and increase disaster prevention consciousness by resident participation activities.

  • PDF

A Trial of Developing an Application for Mobile Devices to Analyze Saga Prefectural Sightseeing Information

  • Wakuya, Hiroshi;Horinouchi, Yu;Itoh, Hideaki
    • Proceedings of the Korea Contents Association Conference
    • /
    • 2013.05a
    • /
    • pp.253-254
    • /
    • 2013
  • In the preceding studies, an analysis of Saga Prefectural sightseeing information by a self-organizing map (SOM) has been tried. And recent development on information and communication technology (ICT) will help us to access any results via the mobile devices easily. Then, in order to realize this basic idea, development of an application for mobile devices is investigated through some preliminary computer simulations on the standard desktop PC in this article.

  • PDF

A Method for Producing Animation as a Series of Backward-Projected Patterns in a Self-Organizing Map

  • Wakuya, Hiroshi;Takahama, Eishi;Itoh, Hideaki;Fukumoto, Hisao;Furukawa, Tatsuya
    • Proceedings of the Korea Contents Association Conference
    • /
    • 2012.05a
    • /
    • pp.195-196
    • /
    • 2012
  • A self-organizing map (SOM) can be seen as an analytical tool to discover some underlying rules in the given data set. Based on such distinctive nature called topology-preserving projection, a new method for generating intermediate patterns was proposed. Then, following to this method, producing animation as a series of backward-projected patterns just like a flip book is tried in this article.

  • PDF

In Situ Observations of Sintering Process during Pulsed Current Sintering of $Al_2O_3$, ZnO and WC ALLOY

  • Kawakami, Yuji;Tamai, Fujio;Enjoji, Takashi;Shikatani, Noboru;Misawa, Tatsuya;Otsu, Masaaki;Takashima, Kazuki
    • Proceedings of the Korean Powder Metallurgy Institute Conference
    • /
    • 2006.09b
    • /
    • pp.810-811
    • /
    • 2006
  • Pulsed Current Sintering (PCS) process possesses some problems that need to be resolved. We, therefore aims at understanding phenomena of PCS process by presenting some basic data on in situ sintering behavior of PCS. Special graphite mold equipped with thermo couple and electrodes were designed to measure the temperature, electric current and voltage inside the powder during PCS process. We apply three types of raw materials, especially for ZnO as semiconductor, $Al_2O_3$ as non-conductor and WC as good conductor. The electric current and voltage were measured for each powder during PCS process. In addition, their electric resistance properties were calculated.

  • PDF

Implementation of information sharing on a Hazard Map Creation Support System in a Traditional Local Town

  • Kozaki, Shun;Okazaki, Yasuhisa;Wakuya, Hiroshi;Mishima, Nobuo;Hayashida, Yukuo;Min, Byung-Won
    • Proceedings of the Korea Contents Association Conference
    • /
    • 2016.05a
    • /
    • pp.237-238
    • /
    • 2016
  • This paper describes Web-based information sharing mechanism in our hazard map creation support system. This system aims at collecting the unique information received from residents and raising resident's consciousness to disasters by recording hazardous locations where residents feel danger in case of disasters. We have implemented a mechanism to share and integrate data of each terminal through a Web server. We expect that this information sharing effects scalability and usefulness of our system by utilizing collected local hazard information of each district.

  • PDF