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籠球의 合理的인 基礎技術의 指導硏究 : Shooting을 中心으로
徐東俊 군산대학교 1974 群山水産專門大學 硏究報告 Vol.8 No.2
Basket-ball can be called, in short, the game of 'shoot'. We can develop the shoot rate by repeating and practicing the art of correct shoot through the rational and scientic way as follows: 1.The mark of shoot is to be aimed at the whole of the ling. 2.The shoot near the ling which has an angle should be aimed at the back-bord, but at the middle-distance the back-board should not be aimed. 3.According to the law of Parolbola, the ball is to be shot at 45˚ 4.As soon as the ball is caught, the shooting form to shoot should be made. 5.The ball should be shot as it is made to turn normally.
徐東俊 군산대학교 1977 群山水産專門大學 硏究報告 Vol.11 No.3
According to the result from the execution of supplementary exercise and the gradual guidance for the improvement in the ability of the chinning exercise, the ability was remarkably improved as follows. 1) According to the result guided by a gradual guide to training, the experimental group lead to the great improvement as compared with the comparative group. 2) In accordance with the increase of frequency of the chinning, many students learn to be interested in the chinning exericise. 3) It could be seen that most students took the exercise of their own volition because of the connection with the mark of the matriculation.
OpenDKP: Designing an Open Data Knowledge Platform for Disaster Risk Reduction and Management
서동준 한국디지털콘텐츠학회 2019 한국디지털콘텐츠학회논문지 Vol.20 No.9
With respect to the phases of the entire disaster management cycle, such as prevention, mitigation, preparedness, response, and recovery, data interconnectivity, availability, and sharing with multidisciplinary and cross-domain approaches play a crucial role in disaster risk reduction and management. In this paper, an open data knowledge platform, which is a knowledge sharing platform for disaster data collection, management, distribution, and analysis, designed for use in interdisciplinary studies in the field of disaster risk reduction and management, is presented. The proposed system can play an important role as a knowledge hub for supporting the development of disaster response technology as well as for risk mitigation and disaster response, disaster recovery, and risk assessment studies. In this study, the architectural design of an open disaster data platform that consists of a set of modular platforms, namely an open data knowledge portal, an API gateway, a disaster knowledge-based platform, and a big data analytics platform, is proposed. The proposed platform will enable the researchers and decision makers involved in the analysis of disaster risk to integrate and collaborate on the collected disaster data and the corresponding analyses, which will allow for the highest levels of disaster risk reduction and management.
서동준,권원배,김성창,박창수 한국광학회 2019 Current Optics and Photonics Vol.3 No.6
In this paper, we introduce a 1.3-µm 25-GHz waveguide-integrated vertical PIN type Ge-on-Si photodetector fabricated using a multi-project wafers service based on fringing field analysis in the depletion region. In general, 1.3-µm photodetectors fabricated using a commercial foundry service can achieve limited bandwidths because a significant amount of photo-generated carriers are located within a few microns from the input along the device length, and they are influenced by the fringing field, leading to a longer transit time. To estimate the response time, we calculate the fringing field in that region and the transit time using the drift velocity caused by the field. Finally, we compare the estimated value with the measured one. The photodetector fabricated has a bandwidth of 20.75 GHz at -1 V with an estimation error of <3 GHz and dark current and responsivity of 110 nA and 0.704 A/W, respectively.