著者

川村 慎 堀口 雅則 小沼 健太郎 山下 慎一 小塩 靖崇

出版者

Japan Society of Sports Industry

雑誌

スポーツ産業学研究 (ISSN:13430688)

巻号頁・発行日

vol.32, no.4, pp.4_481-4_491, 2022-10-01 (Released:2022-10-14)

参考文献数

33

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There is growing academic and practical interest in mental health and wellbeing care systems for elite athletes, including rugby players. Concerns about career transition and its maladaptation are one of the athlete-related factors for mental health problems. The Player Development Program (PDP), which has been implemented mainly in New Zealand, Australia and Europe etc., is a system that supports elite athletes from multiple perspectives while they are active players. According to international practice reports and papers, PDP can also contribute to improving performance. We documented the practice and the feedback of the PDP conducted by the Japan Rugby Football Playersʼ Association (JRPA) as a “Research Note”. In the current practice, from December 2020 to October 2021, we matched 11 active Japanese rugby players and 11 Player Development managers (PDM) in a one-to-one setting to provide an opportunity to speak online once a month. During the period, 10 out of 11 pairs completed the trial. From the feedback after the 10-month practice, the satisfaction of the players was high, and the PDMs answered that it was necessary for active players. Future challenges for promoting the PDP in the Japanese sports society are the specification of PDP in Japan, securing financial resources for the operation, and securing PDM human resources.

著者

川村 慎一 木村 剛生 大森 修一 奈良林 直

出版者

一般社団法人 日本原子力学会

雑誌

日本原子力学会和文論文誌 (ISSN:13472879)

巻号頁・発行日

vol.15, no.1, pp.12-20, 2016 (Released:2016-02-15)

参考文献数

9

被引用文献数

4

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A filtered containment venting system was developed for nuclear power plants. In the Fukushima Dai-ichi Nuclear Accident, widespread land contamination was caused by cesium-137. This system was developed to filter aerosol particles and reduce the amount of radioactive particle release, while protecting the primary containment vessel from over pressure by venting gas from the vessel. Performance tests were conducted under various vent gas flow rate conditions to ascertain decontamination factors for aerosol particles with various diameters. It was observed through the tests that aerodynamic diameter was a good index for characterizing various aerosol particles for the filtered containment venting system. Test results showed that the decontamination factors were well over 1,000 for aerosol particles with aerodynamic diameters larger than 0.4 μm. For aerosol particles with aerodynamic diameters larger than 0.2 μm, the decontamination factors significantly increased with the diameter. This suggested that inertial deposition was the governing mechanism for filtering aerosols in this system. The decontamination factor of the water scrubber section of the filter increased with the increase in Stokes number.

著者

川村 慎一 大木 俊 奈良林 直

出版者

一般社団法人 日本原子力学会

雑誌

日本原子力学会和文論文誌 (ISSN:13472879)

巻号頁・発行日

pp.J15.018, (Released:2016-03-15)

参考文献数

10

被引用文献数

1

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Significant leakage of the primary containment vessel (PCV) occurred on March 15, 2011 at Unit 2 of Fukushima Dai-ichi Nuclear Power Station, causing land contamination over a large area. From the radiation dose rate map of Unit 2 and the temperature trend of the PCV, degradation of the PCV top head flange gasket was identified as the cause of the leakage. The design set point of the rapture disc and operability of the valves in the hardened containment venting system were further identified as factors contributing to the leakage. Based on the lessons from the leakage, the gasket material was improved to have greater heat resistance in a steam environment, the PCV cooling system was diversified to improve reliability, and the operability and operation methods of the PCV venting were improved for greater robustness of the PCV in severe accidents.

著者

山下 慎一 川村 慎 堀口 雅則 小塩 靖崇 Yamashita Shin'ichi Kawamura Shin Horiguchi Masanori Ojio Yasutaka

出版者

福岡大学研究推進部

雑誌

福岡大学法学論叢 = Fukuoka University Review of Law (ISSN:04298411)

巻号頁・発行日

vol.66, no.1, pp.167-187, 2021-06

著者

松長 麻美 小塩 靖崇 畠山 健介 川村 慎 吉谷 吾郎 堀口 雅則 藤井 千代

出版者

杏林書院

雑誌

体育の科学 (ISSN:00398985)

巻号頁・発行日

vol.70, no.10, pp.759-764, 2020-10

著者

川村 慎一 奈良林 直

出版者

一般社団法人 日本原子力学会

雑誌

日本原子力学会和文論文誌 (ISSN:13472879)

巻号頁・発行日

vol.15, no.2, pp.84-96, 2016

被引用文献数

1

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Three nuclear reactors at Fukushima Daini Nuclear Power Station lost all their ultimate heat sinks owing to damage from the tsunami caused by the Great East Japan Earthquake on March 11, 2011. Water was injected into the reactors by alternate measures, damaged cooling systems were restored with promptly supplied substitute materials, and all the reactors were brought to a cold shutdown state within four days. Lessons learned from this experience were identified to improve emergency management, especially in the areas of strategic response planning, logistics, and functions supporting response activities continuing over a long period. It was found that continuous planning activities reflecting information from plant parameters and response action results were important, and that relevant functions in emergency response organizations should be integrated. Logistics were handled successfully but many difficulties were experienced. Therefore, their functions should be clearly established and improved by emergency response organizations. Supporting emergency responders in the aspects of their physical and mental conditions was important for sustaining continuous response. As a platform for improvement, the concept of the Incident Command System was applied for the first time to a nuclear emergency management system, with specific improvement ideas such as a phased approach in response planning and common operation pictures.

著者

川村 慎太郎 水野 修

雑誌

研究報告インターネットと運用技術(IOT) (ISSN:21888787)

巻号頁・発行日

vol.2021-IOT-54, no.8, pp.1-6, 2021-07-02

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システムの構成情報を難読化する技術である,Moving Target Defense (MTD) によって,サイバー攻撃を抑止することが可能である.しかし,MTD の効能に対する副作用として,オペレータがシステムの構成情報やサイバー攻撃による被害状況を把握することが難しくなる.MTD の例として,外部からの通信を処理するソフトウェアを任意のタイミングで変更するシステムを想定する.オペレータはログからサイバー攻撃を検知するが,セッションの処理途中でソフトウェアの切り替えが発生すると,アクセスログからセッションの追跡を行うことが困難になる.そのため,session id をキーにアクセスログからセッションの追跡を行うための処理が必要になる.本稿では,MTD 上で,アクセスログからセッションを追跡するために必要となる動作について,単一のホストで検証した.検証結果から,複数のサーバを連携させた場合に必要となる機能について検討した.検討の結果,複数のサーバを連携させて MTD を動作させるためには,パフォーマンスの維持や複数のサーバ間でセッションを共有する仕組みが必要となることが判明した.