著者
新崎 知 細谷 聡 森 俊男
出版者
日本武道学会
雑誌
武道学研究 (ISSN:02879700)
巻号頁・発行日
vol.26, no.3, pp.41-49, 1994-03-30 (Released:2012-11-27)
参考文献数
8

The purpose of this paper was to examine correlations between efficiency of energy transfer and several indices obtained from strain gauges equipped with on a bow, and found a criterion to evaluate a shooter's technique with regard to the left hand. We analysed twisting moment and bending strain of a bow during a bow's restoration.The conclusions were as follows:1. The efficiency is significantly correlated with values of twisting moment of a bow in the latter part of the bow's restoration sequence, but not significantly correlated with values in the former part.2. The efficiency is significantly correlated with values of twisting moment integrated by time (P<.01), and with time when the maximum values of the moment is obtained (P<.05). However, it is not significantly correlated with the maximum value itself.3. Some spectrums of vibration of bending strain are negatively correlated with the efficiency, especially in the low frequency domain. The number of frequencies at which spectrums are positively correlated with the efficiency is obviously smaller than number of negative correlations. Vibration of twisting moment has little meanings in comparison with that of bending strain because of the magnitude of its energy.Some of these are widely known as an empirical law. Our conclusions are consistent with it.Consequently, the conditions of a shooter's technique to transform a bow's energy efficiently are regarded as follows:* Twisting moment integrated by time is large, and the maximum values of the moment is obtained in the latter part of the bow's restoration.* Vibration of a bow's bend in low frequency (especially, about 100Hz or 200Hz) is small.
著者
加賀 勝 細谷 聡
出版者
日本武道学会
雑誌
武道学研究 (ISSN:02879700)
巻号頁・発行日
vol.26, no.3, pp.25-30, 1994-03-30 (Released:2012-11-27)
参考文献数
18

The purpose of this study was to clear mechanical characteristics of the Japanese bow, and find the energy transfer efficiency. The exeperiments were made by five classes of bows, arrows and strings heights. The potential energy(PE)was calculated on every bows.And the kinetic energy (KE)was calculated from shooting experiment according to arrows and strings heights.Then, the energy transfer efficiency was obtained on KE/PE X 100.The results were as follows:1, Relation between the drawing length and the drawing force shows a inverted S curve. This characteristic is constant regardless of the bow's strength and strings height.2, The potential energy is increased by the drawing length. The general tendency that the strong bow has high potential energy was evident.3, The minimum of the energy transfer efficiency lies on 15cm of the strings height in the experiment according to five classes strings height.4, In this study, the energy transfer efficiency is increased until 29g of the mass of arrow. And more than that, the energy transfer efficiency was decreased. It seems that there is a matching point of bow and arrow.
著者
細谷 聡 加賀 勝
出版者
日本武道学会
雑誌
武道学研究 (ISSN:02879700)
巻号頁・発行日
vol.35, no.2, pp.11-18, 2002-11-30 (Released:2012-11-27)
参考文献数
12

Since a Japanese-style bow is very complicated in both shape and structure, torques in horizontal and sagittal planes regarding grip must be applied to hit the target. This study biomechanically investigated the relationship between left forearm muscular activities and torques in horizontal (called the “NEJIRI” technique) and sagittal planes (called the “UWAOSHI” technique)regarding grip.Surface EMGs of four muscles (extensor carpi radialis longus, extensor digitorum, extensor carpi ulnaris, flexor carpi ulnaris) were collected from ten male subjects shooting arrows. The habit of the motion of drawing the bows that is called “BIKU” was measured incidentally from the experiment. As a result of statistics analysis, extensor digitorum and extensor carpi ulnaris muscles had positive relationships to the torque in the horizontal plane (“NEJIRI” technique). On the other hand, extensor carpi ulnaris and flexor carpi ulnaris muscles had positive relationships to the torque in the sagittal plane (“UWAOSHI” technique). It is suggested that extensor carpi ulnaris is complicatedly controlled to accomplish the operation of “TENOUCHI”, the shooting technique, in KYUDO.
著者
森 俊男 細谷 聡 松尾 牧則
出版者
日本武道学会
雑誌
武道学研究 (ISSN:02879700)
巻号頁・発行日
vol.21, no.2, pp.67-68, 1988-11-30 (Released:2012-11-27)
参考文献数
3
著者
佐古井 智紀 細谷 聡 藏澄 美仁 田北 浩之 戸上 健
出版者
人間-生活環境系シンポジウム実行委員会
雑誌
人間-生活環境系シンポジウム報告集 = Proceedings of Symposium on Human-Environment System
巻号頁・発行日
vol.39, pp.187-190, 2015-11-20

衣服による面積増加を考慮して皮膚と着衣間の多重放射を考慮した伝熱モデル式を提案した.このモデル式から,着衣が吸収する日射より生地を透過後に皮膚が吸収する日射の方が,日射吸収量が同一ならば人体の熱収支に大きく影響を及ぼすことを確認した.一重の衣服が部分的に身体を覆う場合に限るが,熱収支に基づき全身の着衣の日射吸収率,皮膚の日射吸収率を得る部位の重み係数を導いた.提案した解析モデルに基づき,色のみの異なる同一の生地で縫製された夏季の体操服を着用した場合の日射の影響を含む作用温度を計算した.淡色の体操服着用時には濃色の体操服着用時と比べて反射日射が大きくなるものの皮膚で吸収する日射も大きい.結果として,夏季の体操服の生地の色は作用温度にほとんど影響しないことが確認された.
著者
菅原 徹 山田 昇 佐渡山 亜兵 上條 正義 細谷 聡 井口 竹喜
出版者
日本感性工学会
雑誌
感性工学研究論文集 (ISSN:13461958)
巻号頁・発行日
vol.5, no.2, pp.47-54, 2005

The purpose of this study is to clarify the mechanism of smiles by measuring facial muscle activities and facial surface transformation. We made it possible that the strength of the smile was fixed the same by using the biofeedback technique. And facial muscle activities that caused a change on skin surface were measured by surface electromyography and the physiological mechanism of the smile was examined. It became clear that the muscle activities of the risorius and depressor labii inferioris had a significant effect on the formation of the smiling faces. We confirmed that a change of the eye that is the symbol of the smile depended on the compression of the skin by the picture analysis of the face. The internal and external relations to make the characteristics of the smile were explained.
著者
齋藤 健治 井上 一彦 渡辺 正和 細谷 聡 井上 伸一
出版者
名古屋学院大学総合研究所
雑誌
名古屋学院大学論集; 医学・健康科学・スポーツ科学篇 = Journal of Nagoya Gakuin University; Medical, Health, and Sports Sciences
巻号頁・発行日
vol.3, no.1, pp.7-18, 2014-09-30

本研究の目的は,速球とカーブ投球時の上肢と体幹の動きの違いについて明らかにすることであった。大学野球選手の手首と上腕,および背部に計測器を装着して,速球とカーブ投球時の関節運動の角速度を計測した。そして,最大角速度とその時刻,およびボールリリース時の角速度を抽出し,両投球間で比較した。その結果,ボールリリース時の前腕回内角速度と肩内旋角速度は速球の方が大きく,それに対して,最大角速度には差はなかった。前腕回内と肩内旋の最大角速度の時刻は,カーブにおいて速球より遅かった。対照的に体幹運動の角速度には,速球とカーブの間で差は見られなかった。これらの結果から,カーブ投球ではボールリリース時に前腕を相対的に回外位に保つため,両投球種間に差が生じること,そして,カーブ投球では,その前腕回外位を保ちやすくするために,肩内旋の角速度を抑える必要があると考えられた。
著者
細谷 聡
出版者
一般社団法人情報処理学会
雑誌
情報処理学会研究報告情報システムと社会環境(IS) (ISSN:09196072)
巻号頁・発行日
vol.2006, no.92, pp.9-16, 2006-08-25

本学キャリアデザイン学科は短期大学基準協会により「地域総合科学科」の適格認定を受けており「学生が学びたい分野を自由に選んで学ぶことができる」ことを最も大きな特色としている。このため、開講されている科目のほとんどは選択科目の扱いとなるが、開講科目の一部には履修者数に制限を設けた科目があり、この科目の登録方法は義務事務の立場から苦慮している問題であった。システム導入以前、人数制限を設けた科目の履修を希望する学生は申請用紙による履修希望届けを提出し、制限人数以上の申請があった場合は抽選を行い、漏れた学生は履修権利を消失していた。本システムでは抽選に漏れた学生が履修権利をなくなることのないように設計し、その結果24名の学生が一度抽選に漏れた科目を履修することが可能となった。The Career Design Department at Niijima Junior College has been fully accredited by the Japan Association for College Accreditation.In this department students can choose any courses they hope to create his/her own curriculum. Almost all the courses offered are elective and some of them have a student number cap,thus making the web-based registration system more complicated. Under the old system,students had to submit registration forms,but those who were not selected could not register for other courses.Buto under the new web-based registration system even when students are not selected for certain courses, they still are eligible to register for other courses.
著者
細谷 聡 宮地 力 岡田 守彦
出版者
一般社団法人日本機械学会
雑誌
日本機械学會論文集. C編 (ISSN:03875024)
巻号頁・発行日
vol.64, no.623, pp.2411-2416, 1998-07-25

The purpose of this study was to clarify the influence of different strings on the dynamics of Japanese Bow, and to investigate the relationship between the measured mechanical data and the feeling of shooter. Four strings, aramid fiber "Kevlar", "Technora", polyester fiber "Vectran", and hemp string were used for the shooting experiment by nine subjects. At that time, feeling data through questionnaires were collected. The results were summarized as follows: (1) in the logarithmic decrement of bending and torsional oscillation after release, hemp string was highest in this four strings, (2) the difference of fibers didn't have influence on frequency of the oscillation, (3) in the energy transmission efficiency, Kevlar, Technora and Vectran were about 69%, hemp was 67.7%, (4) it is also found that the feeling of shooter was related to the measured mechanical data significantly.