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RISS 인기검색어
- 검색키워드
- 저자 : Keigo Yamaguchi (검색결과 3 건)
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Takeharu HAYASHI,Yoshihiko TAKAHASHI,Keigo HARA,Yasunori TAKEMURA,Satoru YAMAGUCHI 제어로봇시스템학회 2022 제어로봇시스템학회 국제학술대회 논문집 Vol.2022 No.11
To develop sustainable societies, it is necessary to reduce the use of fossil fuels. Therefore, widespread use of electric vehicles (EVs) is the need. Many subjects such as mathematics-and physics-based-mechanics of machine taught at the universities are useful to meet this problem. However, to design EVs, the ability to unify such knowledge along with the fabrication cost, time management, and teamwork management is necessary. We think that EV competition is a useful exercise in design education that helps develop this ability. Considering the energy problem, we proposed an official competition for small EVs, named “pico-EV Eco Challenge”, as an exercise in engineering design education. In this competition, a small one-person EV using only small rechargeable batteries (7.2 V, 1000 mAh in total) is fabricated and the fabricated EVs run a 60 m circuit. The competition in the years 2021 and 2022 was held on online due to COVID19 pandemic. In this paper, the competition criteria, the flow and the analyses of EVs on 2021 competition are described.
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Yoshihiko TAKAHASHI,Takeharu HAYASHI,Yasunori TAKEMURA,Keigo HARA,Satoru YAMAGUCHI 제어로봇시스템학회 2019 제어로봇시스템학회 국제학술대회 논문집 Vol.2019 No.10
Many skills such as machine design, electronic circuit design, microcomputer programming are taught in mechatronics lectures at universities. Parts are given and students assemble the parts according to set examples. However, students cannot develop creativity simply by following fixed examples. In order to foster creativity, it is necessary to make mechatronic systems based on students’ own ideas. Students also need to study production costs, schedule management, team work etc. These skills are important when becoming engineers in companies after graduation. In order that students can use their own ideas, fabricate mechatronic systems, understand production costs, deal with deadlines and develop a team ethos, we have started a compact electric vehicle competition, named “pico-EV Eco Challenge”, and implemented it. In the competition, a one person small electric vehicle using only small rechargeable batteries (7.2V, 1000mAh in total) is fabricated and runs a 60m circuit. In this paper, the history, regulation and management of the competition, examples of participating vehicles, results and benefits of participation, etc. are discussed.
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Iori Kisu,Kouji Banno,Asahi Tokuoka,Keigo Yamaguchi,Kunio Tanaka,Tetsuro Shiraishi,Kanako Nakamura,Hiroshi Senba,Kiyoko Matsuda,Nobumaru Hirao 대한산부인과학회 2022 Obstetrics & Gynecology Science Vol.65 No.3
ObjectiveTransvaginal removal of large specimens during laparoscopic hysterectomy can be a complex surgical procedure thatposes a risk of organ injury and tissue spillage into the abdominal cavity and is associated with extraction of thespecimen and manual morcellation. Our objective was to demonstrate a technique for transvaginal removal of largespecimens using the Alexis Contained Extraction System (CES) in laparoscopic hysterectomy. MethodsThe technique used for transvaginal removal of large specimens using the Alexis CES was presented in this video. Surgery was performed at a tertiary hospital. ResultsFollowing resection of the specimen during laparoscopic hysterectomy, the Alexis CES was inserted into the abdominalcavity through the umbilical trocar wound. The specimen was placed in a bag to prevent tissue spillage. The ringretractor was guided to the vagina and pulled out transvaginally. By repeatedly turning the ring retractor, tensionwas applied to the specimen bag, and the vaginal wall was unfolded all around to enable a secure surgical field. During manual morcellation of the specimen in the bag, the retractor was pulled and additionally turned to roll andre-tension the specimen bag when the bag was loosened. The specimen was pushed out of the vagina and safely andeffectively extracted without concerns about tissue spillage in the abdominal cavity or related organ injuries. ConclusionThe technique for transvaginal removal of large specimens using the Alexis CES enables simple, effective, and safetissue extraction with contained manual morcellation during laparoscopic hysterectomy. 영어
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