著者

宮島 絵里 山口 実靖

出版者

工学院大学

雑誌

工学院大学研究報告 (ISSN:03685098)

巻号頁・発行日

no.116, pp.63-69, 2014-04-30

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In virtualized environment, several virtual machines run on a physical machine. In this case, a HDD header executeslong distance seeks among huge virtual machine image files. Consequently, I /O performance is tremendously decreasedby these long distance seeks. In this paper, we propose a method for increasing I /O performance by placinghotspot blocks. We implemented the proposed method by modifying Linux filesystem and evaluated its performance.Our evaluation has demonstrated that the proposed method has been successful in improving I /O performance in virtualizedenvironment.

著者

高信 英明 野谷 耕太 青山 四朗 鈴木 健司 三浦 宏文

出版者

工学院大学

雑誌

工学院大学研究報告 (ISSN:03685098)

巻号頁・発行日

vol.99, pp.23-30, 2005-10-30

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This paper is describes the araher surface robod balld on the msverest of water striders. Since few researches. Therefore we analyzed the movement of water striders living on the water surface, and then made a robot that can move on had not been deve abon water shiders peovement, the movement of their legs when they did turns, we found out they, hadi two different wotions : the uce of both legs and the use of oneleg, In addifvor, the diffecer depends on a turning wyle obcerving. Based on the analysis, we made a robot of water strider where actuators was light and simple. We also made the actuators using electromagnet. The robot demonotrated that moving iadependently. it coald obu tuse different tarns with both leas moving respeativelyt and that the robot could tloat on water in surface tension.

著者

栗原 良太 中村 納

出版者

工学院大学

雑誌

工学院大学研究報告 (ISSN:03685098)

巻号頁・発行日

no.113, pp.97-104, 2012-10-30

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In this paper a highly accurate extraction algorithm of moving individuals existing in the complicated backgroundsand lighting conditions is presented. In the previous method, a moving individuals appearing in the complicated background could not be distinguished.The moving objects such as cars, trees, animals must be discriminated from moving individuals in the outdoor environment.In this paper, a new method for isolating individuals area is presented. By restricting individuals area using a ellipsewith variable parameters, the individuals area is effectively isolated and detected.

著者

椎塚 久雄

出版者

工学院大学

雑誌

工学院大学研究報告 (ISSN:03685098)

巻号頁・発行日

no.112, pp.53-62, 2012-04-30

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The purpose of this paper is to discuss the relation between interactivity and the degree of KAWAII for characters.It is also our problems that whence comes th`e KAWAII, fun' o`r amiability' of `a character'? It is shown that we proposethe visual communication model from the Shannon and Weaver process model of communication, and the interactionexists between the character and the audience. The element that can decide the interactive degree of the charactershows the relation to the story that the character has. Interest appears as a result of interactivity of characters. It isalso shown that KAWAII proposes to appear as a function of interactivity.

著者

小阪 裕司 椎塚 久雄

出版者

工学院大学

雑誌

工学院大学研究報告 (ISSN:03685098)

巻号頁・発行日

no.109, pp.167-174, 2010-10

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This paper discusses causalities between kansei information and consumer buying behavior and actions a firm can take knowing that kansei information influences such behavior. We regard information transmitted through point-of-purchase advertisements (POP ADS) at retail stores as one of the factors that incentivize customers to make purchases. Our focus is on kansei information, which is the result of cerebral processing of information obtained through the five senses, leading to a positive affect. Since 2000, we have conducted research into the effects of kansei information on consumer buying behavior in various industries in Japan. Based on observations of such effects as well as firms' marketing and sales activities, we have modeled the process in which purchases are generated by the presentation of kansei information. And we have explored a way to build a systems dynamics model centering on the effects of kansei information. In this paper, focusing on "Kansei information" sent by POP ADS, at first, we explain our model named "Kansei information-Buying behavior model". And we explain causal relationships using a systems thinking approach, and construct causal loop diagrams. Making comparisons with the model and the causal loops, we also examine an experiment from an actual retail store which takes advantage of kansei information in an attempt to increase customer buying motivation.

著者

高信 英明 明賀 秀行 吉澤 宏和 鈴木 健司 三浦 宏文

出版者

工学院大学

雑誌

工学院大学研究報告 (ISSN:03685098)

巻号頁・発行日

vol.101, pp.17-23, 2006-10-30

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The purpose of this research is production of the jump robot based on the standard of an internal structure of the cricket. The insect doesn't control the landing for the jump. The cricket doesn't have the error margin of the numerical value of the distance that jumps most in orthopteras. And, it can do a steady jump. Because the body axis is the horizontal along ground. It is thought that it is possible to jump because it stabilizes even if the mechanism of the jump robot keeps easy, and is not controlled by doing the design based on the standard of the cricket. The robot adjusts "Ratio of legs" and "Position of center of gravity" to the same value as an actual cricket. The mechanism of the jump was designed by the same standard as an internal structure of the cricket. SMA that was able to expand and contract by like to the muscle also of the actuator was used. It succeeded in producing the robot, and making it jump. The data of the jump of the result of the jump experiment of the robot and the actual cricket that was measured and obtained was compared. And, the result of doing the jump that looked like the cricket was obtained.

著者

安斎 雄亮 荒井 純一

出版者

工学院大学

雑誌

工学院大学研究報告 (ISSN:03685098)

巻号頁・発行日

no.110, pp.13-19, 2011-04-30

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A wind power generation has an inherent problem with fluctuation of generation power depending on wind velocity change. This power fluctuation is relating to lesser power quality, then generation power leveling is required. A battery energy storage system is one of countermeasure for suppressing power fluctuation. The battery energy storage system consists of battery, inverter, and control circuit. The better ratio of capacity of the battery energy storage system to the wind power generation, and better control are not shown until now. This paper proposes a better control method of the battery energy storage system for generation power leveling. Simulation studies are carried out and effectiveness of the proposed control is reported.

著者

池端 孝次 荒井 純一

出版者

工学院大学

雑誌

工学院大学研究報告 (ISSN:03685098)

巻号頁・発行日

vol.108, pp.51-56, 2010-04-30

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The microgrid composed of new power generations has been studied recently. The microgrid without utility power system will be examined in the future. We assume the isolated microgrid consists of a synchronous generator and an inverter power source. In this paper the stable operation of the microgrid without utility power system is studied in viewpoint of how larger capacity of the inverter power source compared to the capacity of the synchronous generator can be connected. Moreover, effects on stable operation by different inverter controls are discussed. Result of simulation shows that the capacity of the inverter less than or equal to five times of the generator gives stable operation. And the simulation result shows the application of the voltage control to the inverter will contribute stable operation of the power system.