著者
後藤 惠之輔 森 俊雄 坂本 道徳 小島 隆行
出版者
長崎大学
雑誌
長崎大学工学部研究報告 (ISSN:02860902)
巻号頁・発行日
vol.35, no.64, pp.57-62, 2005-03

In recent years, the small island nick named as 'Gunkanjima' (formal name "Hashima") located in the southwest of the Nagasaki harbor attracted a lot of attention. Historically Gunkanjima, an island rich of coalmine supported modernization of Japan by supplying invaluable energy. However, abrupt shift in energy use during the 1970s forced the closure of the mines in this island on January 15, 1974. Eventually, since almost thirty years this island became an uninhabited island. But still there are many cultural heritages valuable from scientific standpoint left in the island, including the first Reinforced Concrete Apartment Building in Japan. In this paper, we have summarized the results of the interview with the former residents of this island and also the field survey in "Gunkanjima". This investigative study indicated that, the community structures followed by the residents of this island in those days, can be an ideal model to solve the present social problems arising in Japan. The results of the study also revealed the immense importance of Gunkanjima to be preserved as an industrial heritage, symbolizing the industrial growth of Japan. Hence got sufficient potential to be utilized as a scientific research center for the future generation and which in turn would promote revitalization of the surrounding areas.
著者
岡林 隆敏 阿部 大輔 糸永 洋次郎 足立 圭太郎
出版者
長崎大学
雑誌
長崎大学工学部研究報告 (ISSN:02860902)
巻号頁・発行日
vol.34, no.63, pp.65-69, 2004-07

The atomic bomb disaster can be classified to urban disaster from the viewpoint of civil engineering. "The US strategic-bombing investigating commission film", an existing aerial image data of post atomic bomb disaster in Nagasaki recorded by the commission, remains as the materials for representing the result of the attack. However, there is few material, which indicates the right places of the object structures in detail. The objective of this study is to structure the database linked with the map of Nagasaki city by Visual Basic in order to utilize the historical data. Furthermore, we utilized the data by archiving in DVD-ROM.
著者
後藤 惠之輔 北嶋 清
出版者
長崎大学
雑誌
長崎大学工学部研究報告 (ISSN:02860902)
巻号頁・発行日
vol.30, no.54, pp.57-62, 2000-01

In this paper the authors carried out a barrier-free survey and tried to make a toilet map in the builing of Faculty of Engineering, Nagasaki University. Because of being a public facility, Nagasaki University is used by a lot of peoples including the disabled. Owing to the barrier-free survey with a wheelchair it was cleared that there are many barriers such as stairs, gloomy passages, and a narrow lift in the building. In a toilet map presented here not only the location but the kind of toilets are shown together with the location of stairs, slopes and the lift. Lastly the authors made a few proposals in order to improve facilities in the Faculty for barrier-free ones.
著者
児玉 好雄 林 秀千人 村山 将 近藤 重樹 山口 英告 石田 清輝
出版者
長崎大学
雑誌
長崎大学工学部研究報告 (ISSN:02860902)
巻号頁・発行日
vol.34, no.62, pp.9-17, 2004-01
被引用文献数
1 or 0

There are two mechanisms giving rise to the dipole-type radiation of the turbulent noise generated from Jet fan. One is the strong turbulence induced by a front rotor which flows into the rear rotor, which, in tum, random force fluctuation on a rear rotor blade. Another is shedding of vortices from the trailing edge of the both front and rear rotors. In this paper, we take these two mechanisms into consideration to theoretically estimate the turbulent noise level. The estimated values agree well with the measured levels of turbulent noise generated by the Jet fan. It is theoretically clarified that the noise generated by the rear rotor is higher than that from the front rotor. The noise due to the turbulent flow is higher than that due to the vortex shedding from the trailing edge of the rotor.
著者
高橋 和雄 藤井 真 原野 安弘
出版者
長崎大学
雑誌
長崎大学工学部研究報告 (ISSN:02860902)
巻号頁・発行日
vol.27, no.49, pp.305-311, 1997-07

The volcanic disaster of Mt. Fugen in Unzen was prolonged and enlarged more than four years. Roads and railway with in off-limit area were closed and damaged by debris flows. The volcanic activity rendered severe bad effects on the local economy in commerce and industry. In this paper, study on travel choice behavior of commuters during interception of traffic due to volcanic disaster of Mt. Fugen in Unzen is reported by the questionnaire survey. Transport behaviors of commuters and effects on daily living are discussed.