A Study on Nagasaki Peace Park through a Documentary Survey on Memorial Services for the A-Bomb Victims soon after the World War Ⅱ, with a focus point on the Location of the Ground Zero

This paper studies local newspapers soon after World War Ⅱ. The aim of this study is to take a new look at the spot of Ground Zero by checking memorial services for the A-bomb victims and reconsider the concept in Nagasaki Peace Park planning.departmental bulletin pape

Creating Connections--Tetralemma as a Logic Leading to Peace

P(論文)In Nagasaki, peace is represented by symbols such as the dove, Nagasaki and Hiroshima, and thought through a frame of victimhood nationalism built up by the United States and China after World War II. The consciousness of peace is not based on feelings in one's life. In order to rebuild peace from the perspective of the entire planet on which all living things coexist, it is necessary to leave dualism behind and rely on the logic of tetralemma, which exhausts all cases of human thought without falling into dilemmas. 　When children think of themselves after an experience of a story of greening by planting poplars in a desert of China, we learn that children’s consciousness is flexible. This process of jumping to underlying universality can be understood by the logic of tetralemma: 1) affirmation, 2) negation, 3) negation of affirmation and negation, and 4) affirmation of affirmation and negation. The third aspect of tetralemma is the core of this logic, evidenced by Nagarjuna and further elaborated on by Yamauchi Tokuryu (1974). Before the moral education lesson on life, the children thought about who they are by using character attributions and negations in relation to local nature. However, after the lesson of the travel story that is local to the Chinese desert, they lost their attribution and negation related to local nature and found that they themselves are essentially both life and greening together by planting poplars. After their activity as an actor, a term inspired by Bruno Latour, in the global task of greening, they could witness the restoration of living creatures on earth. The fundamental negation process of tetralemma creates underlying universality of life which then creates peace in connection with their everyday lives. 　We can be an actor by using the logic of tetralemma and making fundamental relations with younger generations, who are flexible in their learning and can act for the future of our sustainability.departmental bulletin pape

Theoretical Procedure on the Hydrostatic Stability of Ships (Part 2 : ) Stable Attitude in an Inclined State

P(論文)In this paper, a theoretical treatment on the hydrostatic stability of ships is presented. As the simplest hull form, a columnar ship with rectangular cross-section, which is made of homogeneous squared timber with arbitrary breadth and material, is chosen. 　In the Part 2 of this theme, the stable attitude in an inclined state of the ship, which is not stable in the upright state with horizontal deck, is analyzed by means of ship's hydrostatics. By doing so, the dependence of the inclined attitude on the breadth and material of the ship will be clarified.departmental bulletin pape

都市の記憶Ⅻ 長崎の平和運動に関わって40年の歩み～在外被爆者問題の視点から～

departmental bulletin pape

A Study on Miniaturization of Wide-range Anode Power Supply for Hall Thruster

長崎総合科学大学博士（工学）2022doctoral thesi

都市の記憶ⅩⅢ 多重の犠牲者が突きつけたもの～広島三菱元徴用工被爆者問題から考える～

departmental bulletin pape

Current Situation and Issues of Acceptance of Students in Need of Japanese Language Guidance in Nagasaki Prefecture：Based on a MEXT survey, 2021 school year

E(その他)departmental bulletin pape

Basis Investigation on Practical Use of Weld Defects Inspection using Ultrasonic Phased Array at Shipbuilding Field

Welding of hull structural materials is an indispensable technique for the ship construction. If a serious defect exists in a welded joint and grows up, it can lead to the damage of the ship structure, and finally to some significant accidents, such as pollutant spills or danger to the life of crew member. As conventional techniques to check the internal defect in welded joints, radiographic testing (RT) and ultrasonic testing (UT) are used. Recently, thanks to the rapid progress and spread of digital technology in various fields, an inspection technique of phased array ultrasonic testing combining visualization technology has been released, which can make it possible to inspect the internal defect in welded joint just after welding and check the defect visually on site. The inspection technique like this is expected to contribute to the improvement of welding technology and upgrading the skills of welding engineers. In this study, to utilize the phased array ultrasonic testing to the ship construction, many types of welded joint specimens with various welding defects were prepared and inspected for these internal defects in the welded joints by phased array ultrasonic testing. In addition, these results were evaluated, comparing with the inspection results by radiographic testing.departmental bulletin pape

Experimental Study on the Generation of a Group Wave and the Behaviors of a Floating Body in a Group Wave

Reproducing way of a group wave, which is a group of waves of relatively large height, in a wave basin and the behaviors of a floating body in a group wave are investigated experimentally. Rather than encountering a single extremely large wave, floating bodies could fall into more dangerous situation when they encounter a group wave. For example, if a floating body, after encountering the first wave of a group wave and inclining toward its weather side, happened to encounter the second wave, the wave could run up on the deck and further tilt the floating body and so on, which may finally evolve into a serious maritime accident.departmental bulletin pape

A Study on Fatigue Strength of Cruciform Welded Joints of Duplex Stainless-Clad Steel Plates for Chemical Tankers

On the utilization of duplex stainless-clad steel plate and the solid steel plate in the cargo tank structure of chemical tanker, most important items to know in the design of the construction is fatigue strength of the cruciform welded joint between the transverse bulkhead and double bottom. In this study, we conducted the fatigue tests using the specimens of the cruciform welded joints composed of duplex stainless SUS329J3L-clad steel plate, SUS329J3L solid steel plate and mild steel plate. As a result, it is shown that duplex stainless SUS329J3L-clad steel plate and SUS329J3L solid steel plate can be sufficiently utilized into the cargo tank structure of chemical tanker.departmental bulletin pape