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Evaluation of Dynamic Properties and Seismic Resistance of The RC Building \nBefore and After Retro_tting Based on Microtremor Measurements\n—Using The Main O_ce Building in Hiroshima Institute of Technology—
Full text linkapplication/pdfIn order to verify the seismic reinforcement e_ect to the RC building quantitatively, Microtremor measurement was carried out for the main building before and after the reinforcement and compared the dynamic characteristics derived from microtremors. As a result, natural frequencies estimated by the microtremor records before the seismic reinforcement are approximately 25~30% bigger than those estimated by these records after the seismic reinforcement. The results show that the reinforcement method signi_cantly increases the sti_ness of a RC building. Furthermore, this paper presents the Structural Health Monitoring （SHM） system using Internet of Things （IoT） to improve for the earthquake disaster reduction and maintainability of buildings.departmental bulletin pape
Addition, Variation, Summation（ ２ ）\nvon Walther Killy
Full text linkapplication/pdfdepartmental bulletin pape
A Study on the Goals of High School Physics Education\n〜Through the Positioning of Modeling in the French High School Subject “physique-chimie”〜
Full text linkapplication/pdf高等学校の物理教育の目標に関して、モデリングという観点に着目し、フランスの高等学校の教科「物理・化学」の学習指導要領や国民教育省から出された資料における目標に関する記述と、同国の別教科「生命と地球の科学」や日本の学習指導要領での記述の違いを指摘しながら示唆を引き出した。物理・化学の目標として「実験」と「モデリング」を重要視することが 3 か年にわたって記述されていた。探究ないしは探求に相当する文言は一言も見いだされなかった。日本では教科理科として統一書式があり、科目の違いは内容に関する部分の差し替えであった。その他、高等教育に対する高等学校の位置づけに基づいた記述の違いも認められた。重要視する目標の違いを生み出す観点の一つとして、教科の括り、科目の括り方による違いを指摘し、高等学校という教育段階における教科理科と科目のありように対する問題提起を行った。departmental bulletin pape
Creation of water electrolysis hydrogen generator and its application
Full text linkapplication/pdfGlobal warming problems, local energy problems, etc. are expected to become serious problems as the aging society in Japan progresses. In this work, we investigated the papers related to the mechanism of water electrolysis, and studied the speci_cations and performance of the developed water electrolyzer. We also installed a hydrogen concentration measuring device on an IoT device and tried to display the data on a computer using Sigfox.departmental bulletin pape
Measurement of Self-induced Jumping of Celt using IMU
Full text linkapplication/pdfFor experimental veri_cation of self-induced jumping shown by Batista's simulation［1］, the authors have previously performed an analysis by using a high-speed camera. However, clear self-induced jumping couldn_t be observed. Next, we aimed to detect self-induced jumping by measuring the acceleration in the direction perpendicular to a desktop surface using an inertial measurement unit （IMU） BWT901. We analyzed the time variation of the acceleration component az_ perpendicular to a desktop surface under the assumption that the acceleration components due to roll, pitch, and spin are sufficiently smaller than the gravitational acceleration. As a result, signs of self-induced jumping could be observed although a clear jumping could not be detected. In this paper, we describe the details of the experimental results.departmental bulletin pape
An economical view on prioritizing behavior about club-activity and part-time job of university students
Full text linkapplication/pdfStudying is main activities for university students. They are often involved in extracurricular activities such as club-activities and part-time jobs. Balancing extracurricular activities has long been an interest for university students. This paper is an attempt to analyze the behavior of college students by constructing an economic model from the perspective of time management.departmental bulletin pape
Experiment study on push up sti_ness for steel beam by means of Joint-Plastic-Hinge
Full text linkapplication/pdfIn practice, plastic-hinge is evaluated by perfect elastoplasticity type shown in Figure l （c）. But in fact, the stress increases while bearing gentle slope after expressing full plastic endurance. And if we use FA rank members which satisfy limitation of width-thickness-ratio, local backling will occur by accumulating plastic deformation. Under the circumstances, we propose Beam-Joint-Plastic-Hinge and aim for improving the evaluation precision of plastic-hinge. In this study, we focus on keeping base materials elastic when we introduce Beam-Joint-Plastic-Hinge and explain the possibility loosens limitation of width-thickness-ratio. We design the FC rank test specimen which is introduced Beam- Joint-Plastic-Hinge is introduced. Next, we compare FA rank test specimen and FC rank test specimen.departmental bulletin pape
Addition, Variation, Summation（ １ ）\nvon Walther Killy
Full text linkapplication/pdfdepartmental bulletin pape