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2011 대구세계육상선수권대회 남자 높이뛰기 메달리스트들의 바이오메카닉스적 특성 분석
김의환 ( Eui Hwan Kim ),배영상 ( Young Sang Bae ),김성섭 ( Sung Sup Kim ),권문석 ( Moon Seok Kwon ),위웅량 ( Ung Ryang Wo ),김기만 ( Ki Man Kim ),이정민 ( Jeong Min Lee ) 한국운동역학회 2011 한국운동역학회지 Vol.21 No.5
The purpose of this study was to perform a kinematic analysis of the high jump techniques of the three men`s medalists at the 2011 IAAF Championships in Daegu (August 27-September 4, 2011), In particular, a three-dimensional coordinates method was used to analyze the last three strides before touchdown, the touchdown techniques, and the movements after takeoff toward the bar. An analysis of the, data for the biomechanical characteristics of the world`s best high jumpers could contribute to an improvement in the performance of a national high jumper. The first conclusion of the data analysis was that the arm movements of the gold medalist, J. Williams, had a single arm form, whereas the arm movements of the other medalists were a double arm form. Second, the difference in the knee joint angles upon touchdown and toe-off was 10˚. Third, J. Williams achieved his maximum CM height after takeoff (1.26m) using the maximum flexion of his knee joint. Fourth, the foot contact duration of A. Dmitrik (0.11 s) was the shortest among the medalists, and the ratio for his transformation of horizontal velocity to vertical velocity was the greatest (75.25%) among the three. Last, the maximum CM height of T. Barry was the greatest, and his foot contact duration was the longest.
趙萬燮,曺義權,金沂柱 全北大學校 1996 論文集 Vol.42 No.-
To construct a structure in rock, first of all, the mechanical behavior of the rock should be understood. Most of rocks in situ have contained mechanical weak planes which greatly influenced on the mechanical behavior of the rock. On this study, hard rock was used to investigate in influence of the weak plane on the peak strength and displacement behavior. The results were summarized as follows; 1. When the angle of a weak plane(α) was 30。, the lowest peak strength was appeared. And the peak strengths between 30。to 45。were increased with increasing angles of weak plane. But the anisotropy of peak strength by the angle of weak plane was not remarkable in the comparision with that of soft rock, Tuff. The reason is the influence of the angle of the internal friction of the weak plane. 2. Different from soft rock, the peak strength was higher α= 60。than 90。with the lowest rate of displacement (1㎛/sec) in case of hard rock. It shows that the peak strength of weak plane is chiefly influenced by coefficient of internal friction rather than cohesion.
趙萬燮,金沂柱 全北大學校 1995 論文集 Vol.39 No.-
The study on the stability of cavity in rock and mechanical behavior of its surrounding rock mass provides the fundamental basis for developing underground space. When the isotropic rock contained the multi-circular holes under the uniaxial compression, we have been studies on the fracture properties of rock mass then the gradient changes were 8 steps to the compression direction, α=0°, 15°, 20°, 30°, 35°, 45° ,60°, 90° and the parameters were presented as follows: 1. 3 steps of hole diameter change : Ø = 3, 5, 7mmØ 2. 3 steps of displacement rate change. : C = 0.05, 0.1, 0.2mm/mm As a result of this study, even if parameters(change of hole diameter and displacement rate) influenced to the properties of fracture strengths, they influenced less then gradient changes.
Urapidil, Labetalol의 투여가 기관내 삽관시 심혈관계에 미치는 영향
신용섭,윤석화,손수창,이원형,이정은,황원재,김만수,김영주,김혜자,최세진 충남대학교 의과대학 지역사회의학연구소 1994 충남의대잡지 Vol.21 No.2
We have examined the comparative efficacy of small doses of intravenous urapidil and labetalol in blunting hemodynamic response to endotracheal intubation and surgical incision in 30 patients without cardiovascular diseases. After intravenous urapidil 0.2 mg/kg or labetalol 0.2 mg/kg anesthesia was induced with thiopental 5mg/kg. Endotracheal intubation was facilitated by vecuronium 0.15 mg/kg with priming principle and anesthesia was maintained with enflurane and nitrous oxide in oxygen. Systolic, diastolic and mean arterial pressure and heart rate were measured before administration of the drugs, 5 minute after administration, just prior to endotracheal intubation and 1, 3, 5, 10 minute after intubatin. Also the peak blood pressures and heart rate within 10 minutes after surgical incision were measured. Endotracheal intubation and surgical stimulation were associated with significant increases in blood pressures and heart rate in both urapidil and labetalol group. Comparison of the changes in systolic, diastolic, and mean artrial pressures and heart rate between urapidil and labetalol group showed no significant difference except peak systolic pressure after surgical incision. It is concluded that the pressor response to endotracheal intubation and surgical stimulation are not influenced significantly by urapidil 0.2 mg/kg or labetalol 0.2 mg/kg. However, urapidil and labetalol preloading may be similarly effective in the blunting of the increases in blood pressures with larger doses of the durgs during anesthetic induction.
다시점 영상 방송을 위한 플레이어 모델의 설계 및 구현
권준섭,김만배,최창열 강원대학교 정보통신연구소 2007 정보통신논문지 Vol.11 No.-
With the rapid development of computing technology, multi-view video is attracting extensive interest recently due to its greatly enhanced viewing experience. In this paper, we propose an integrated display solution model and present the prototype system for multi-view video. The player can display and verify the multi-view video. For verifying the accuracy of synthesizing graphics, it can display in both 2D and 3D mode, and save frames into various format. And, in experiments we can select not only degree of stereoscopic effect but also number of intermediate views between real cameras. With this system, users are able to select their desired viewing directions and enjoy many exciting visual experiences, such as view switching, freeze and rotate and view sweeping, with great freedom.
Agent에 근거한 생산시스템 관리체계 : agent oriented SCM을 중심으로 focuse on the agent oriented SCM
엄완섭,임상환,윤만영,김영훈 국립7개대학공동논문집간행위원회 2003 공업기술연구 Vol.3 No.-
Recently, in the competitive environments, every company recognizes the importance of the control architecture for production system. Manufacturing has been evolving over the years as different needs and technologies arise. Information systems have become the nerve center of most manufacturing system. The Supply Chain is a worldwide network of suppliers, factories, warehouses, distribution centers, and retailers through which raw materials are acquired, transformed, and delivered to customers. Partnership quality has been considered important to optimize performance of Supply Chain Management. But the dynamics of the enterprise and the market make this difficult, for example, materials do not arrive on time, production facilities fail, workers are ill, customers change or cancel order, and so forth, causing deviations from the plan. In this paper, we develop a control architecture for production system. Then, using the simulation technique with Arena Professional Edition, we proposes a effective evaluation method for production systems.
趙萬燮,金沂柱 全北大學校 1994 論文集 Vol.37 No.-
The study on the stability of cavity in rock and mechanical behavior of its surrounding rock mass provides the fundamental basis for developing underground space. When the isotropic rock contained the multi-circular holes under the uniaxial compression, the gradient changes were 8 steps to the compression direction, a = 0˙, 15˙, 20˙, 30˙,35˙, 45˙, 60˙, 90˙ and the parameters were presented as follows : 1. 3 steps of hole diameter change : φ = 3, 5, 7 ㎜φ 2. 3 steps of displacement rate change : C = 0.05, 0.1, 0.2 ㎜/min On this study, we worked to determine the fracture process and strength properties. The results wore summerized as follow ; 1) From this test, stress-strain curves were divided into 5 types, and influenced by gradient change. Namely, a - 0˙ and Intact were contained with Type Ⅰ , a = 15˙∼ 35˙ were contained with Type Ⅱ, a = 45˙ and 60˙ were contained with Type Ⅲ, a = 90˙ was contained with Type Ⅳ. Except for hole diameter 3 ㎜φ, a = 15˙∼ 60˙ were contained with Type Ⅴ. 2) Fracture type of specimen was divided into 4 types by gradient change mainly. Type (a) was influenced by Tension Force. Type (b) and Type(c) were influenced by mainly Tension Force and Compression Force, also they accompanied with shear stress of working along holes gradient direction on the specimen center. Type (d) was broken to perpendicular of the load direction by Compression Force. It was corresponded to relationship between stress-strain curves of 1) and fracture type 2).
이인섭,문성기,허만규 慶星大學校 1997 論文集 Vol.18 No.2
Pyrola japonica (Pyrolaceae) is a perennial herbaceous species to Asia. This species reproduces both asexually by underground rhizomes and sexually by seeds. The level of genetic diversity of this species was surveyed using starch gel electrophoresis at putative six enzyme loci from 11 natural populations in Korea. Results from six loci indicated that genetic diversity was high and population divergence was found between genetic identity statistics and geographic distance between populations. Although the range of genetic diversity statistics among populations was unsually large, genetic drift and asexual reproduction did not appear to play major roles in structuring genetic variation. We concluded that the level of genetic diversity maintained within P. japonica populations and the level of population divergence was influenced by its status as forest and mode of gene flow.