멀리뛰기 발구름 동작의 지면반력에 관한 연구

오용교,박형선 서강정보대학 1998 論文集 Vol.17 No.-

This study was conducted to investigate the biomechanical charateristics of the take-off motion in elite long jumpers for the purpose of improving jumping distance. The subjects were four male college players. The ground reaction forces in the take-off phase were obtained from an AMTI force platform. The conclusions were as follows; 1. Minimizing the reduction of horizontal velocity at take-off, total duration of take-off should be shortened. 2. The reduction of horizontal velocity of take-off leg at take-off phase could be minimized reduction of horizontal velocity of center of gravity by knee flexion. 3. The reaction force of lead leg by upward propulsive action at take-off phase increased the vertical propulsive force of center of gravity. 4. Obtaining upward propulsive force at take-off phase, max vertical ground reaction force should be increased as it is possible.

익사사고자에 대한 효과적인 응급처치 방법

오용교,박형선 한국응급구조학회 1998 한국응급구조학회지 Vol.2 No.1

This study was to exhibit the effective emergency care method for the drowning and non-drowning who are reached two-thousand peoples every year in our country. For investigate the effective emergency care, this study was discussed as follows ; Pathophysiology of the water submersion, Fresh-water & sea-water drowning, Factors affecting survival, and Prehospital management. The conclusions from this study were summarized as fellows; 1. Remove the patient from the water. If you suspect neck or spinal injuries, Always support the head and neck level with the back and, begin rescue breathing. 2. Maintain the airway and support ventilation in the water use the jaw-thrust technique to avoid farther injury to the neck or spine. We might encounter more resistance to ventilations than you expect because of water in the airway. Once you have determined that there are no foreign objects in the airway, apply ventilations with more force; adjust ventilations until you see the patient's chest rise and fall but not until you see gastric distention. Do not attempt to remove water from the patient's lungs or stomach. 3. If there is no pulse, begin CPR. 4. Administer high-flow supplemental oxygen; suction as needed. 5. Once the patient is breathing and has a pulse, assess for hemorrhage; control any serious bleeding that you find. 6. Cover the patient to conserve body heat, Handle the patient very gently, and, Transport the patient as quickly as possible to Emergency Department, Continuing resuscitative measures during transport. If the patient have the hypothermia, follow hypothermia management.

분극세기 및 열에이징이 PZT 세라믹스 길이진동모드에 있어서 온도안정성에 미치는 효과

오형철,현덕수,이개명 濟州大學校 情報通信硏究所 2000 情報通信硏究所論文集 Vol.3 No.-

The length extensional vibration mode of a piezoelectric ceramic resonator has the advantage of reduction in its size. In this paper. PZT piezoelectric ceramic specimens with three compositions (Zr/Ti = 56/44, 53/47, 50/50) in Pb(Zr_xTi_(1-x))O₃system were fabricated. We studied effects of poling strength and thermal aging on the vibration mode of the specimens which were poled at 1.5, 2.5, 3.5[KV/㎜] respectively and thermally aged for an hour at 200℃ respectively. The electro-mechanical coupling factor of the length extensional vibration mode increased as poling strength increased. and it decreased after thermal aging. The temperature coefficient of resonant frequency decreased in the 56/44 specimen as poling strength increased after thermal aging. but it increased in the 50/50 specimen. On the conclusion. the changes of poling strength effected on the piezoelectric efficiency and thermal aging contributed to the stabilization of electric dipole structure of the 56/44 specimen.

阿賴耶識의 三相

吳亭根 동국대학교 불교대학 1968 東國思想 Vol.4 No.-

남북한 민간교역의 활성화 방안 : 농산물 중심으로

오형완 연세대학교 통일연구원 2007 통일연구 Vol.11 No.2

The purpose of this academic research is to suggest ways to increase agricultural trade between North Korea and South Korea by examining the current state of private-sector driven agricultural trade between the two Koreas and the obstacles between them. private-sector driven trade of agricultural products between the two Koreas has seen a significant decrease since the inauguration of President Lee's (right-winged, conservative) administration. In addition to the current state of agricultural trade, the skyrocketing prices of crude oil has direct inflationary impacts on the price of grains on a global scale. This has resulted in traditional exporters of agricultural grains such as China and Brazil to impose control measures on their export of grains, which in tum, causes a shortfall in supply of grains in the two Koreas. Consequently, the lack of adequate supply of grains to North Korea, has made it difficult for it to aspire towards self-suffciency in its agricultural sector. At this point in time, if South Korea were to import agricultural products from the North through transfer of raw materials, the resulting improvement of agricultural trade between the two Koreas, it will be mutually beneficial to both. Such an ideal situation will allow South Korea to have an alternative source of agricultural imports. When implemented efficiently, this can also be a catalytic move to help North Korea gain self-sufficiency in terms of food supplies, and in this process, enable it to earn valuable foreign currency. To complicate matters, there exist many trade restrictions, rules and standards applied to. In addition, inter-Korean trade is subjected to the political fluctuation of ties between the two government administrative services, making it difficult to secure approvals from the various government departments, and shipping regulations. Despite these hurdles, inter-Korean trade is improving slowly and the authorities are trying to cut red tape and mitigate trade blocks. Still, there remains much to be desired, I'd like to point out these impediments here and suggest measures to improve bi-lateral trade between the two Koreas. Sustaining and expanding private-sector trade will contribute to reducing misunderstanding and improving communication between the Koreas. It will also help to foster civic, cultural and institutional organizations, that can function to serve as economic and peace resolution bodies. With these in mind, it is hoped that the suggestions herein, will lead to a peaceful relationship between. the two Koreas, in recognition that mutual cooperation is mutually beneficial.

世親의 五蘊觀에 대한 小考

吳亨根 동국대학교 불교대학 1976 東國思想 Vol.9 No.-

자동차 정비서비스의 고객만족에 관한 연구

김형길,오영희 제주대학교 관광과경영경제연구소 2003 産經論集 Vol.18 No.-

다도해 상록활엽수림 대표식물군락의 토양환경과 미생물군집과의 상관관계

李吾炯 木浦大學校 沿岸環境硏究所 1992 沿岸環境硏究 Vol.9 No.1

To analysis the stability of the soil ecosystem, fertility of soils, and the extent of biochemical operation performed by soil microorganisms, the soils of the five representative communities of Camellia japonica, Machilus thunbergii, Castanopsis cuspidata var. siebodii, Quercus acuta and Quercus myrsinaefolia of the evergreen broad-leaved forests of Dadohae National Marine Park were investigated for the soil properties, population size of soil microbes, and correlation between them. Investigations about soil properties and microbial populations of above 5 representative communities revealed that the soil of M. thunbergii community was relatively rich in total nitrogen, organic matter, and phosphorous, and most high in microbial populations. The correlation coefficient between soil properties and microbial populations also showed that soils of M. thunbergii community was ecologically most stable, in that they were uniformly high in all parameters investigated. The total nitrogen content was turned out to be the most important environmental factor for the evergreen broad-leaved forests of Dadohae National Marine Park, since the correlation coefficient between it and microbial populations was highest.

장애아동의 신체활동 프로그램 참여에 대한 부모의 인식

노형규,오광진 한국특수체육학회 2003 한국특수체육학회지 Vol.11 No.1

Most of Adapted Physical Activity(APA) professors say that knowledges about APA have been developed certainly in these years. However, some people think that realities have not changed much. What is the reason? Although so many studies have been presented, we are not able to seek for the studies related parents' perception of APA. The purpose of this study was to analyze parents' perception about their children's participation in APA program regularly. In this study, in-depth interviews were conducted with parents(8 mothers and 2 fathers) and data were analyzed utilizing qualitative content analysis. After regular APA programs participation, Parents' perception changed more clearly and concretely about definition of the physical activities and the adapted physical activity programs. In addition the parents thought that their children with disabilities need more adapted physical activities. Moreover, they insisted that these APA programs must be provided to young children with disabilities early.

하악구치부 유리단결손의 임플란트 수복에 관한 임상적 연구

손형민,오화선,임재석 고려대학교 임프란트 연구소 2000 임프란트연구지 Vol.2 No.1

Many long-term study have demonstrated the successful use of osseointegrated implants to replace posterior teeth in the partially dentate patients. Implant were recently selected as the treatment of the choice for this population, instead of the previous resolves for the shortened dental arch (removable partial dentures, single or multiple cantilevers, or continued premolar occlusion). Advantages of patients with implant-supported prosthesis included an improved masticatory apparatus, reduced stress on the remaining anterior segments of the dentition, esthetics, comfort, and psychological benefits etc. But, there are many obstacle to implant placement in posterior mandible. The shape, quantity, and quality of bone in the mandible as anatomicla limitation and heavy occlusal force as mechanical disadvantage are significant factors in deciding which implant options possible. Consideration of these factors is necessary for the successful diagnosis and implant treatment of partially edentulous arches. PURPOSE : The purpose of this retrospective longitudinal study is to evaluate the long-term outcome, determinants of outcome, and the type and prevalance of prosthetic complications in the series of the patients treated with implants in the partially edentulous posterior mandible. MATERIAL AND METHODS : A total of 107 consecutively placed implants were inserted in 38 partially edentulous patients and restored with single-tooth and fixed partial dentures restoration at Korea University Guro-hospital from April 1991 to December 1999. The patients ranged in age from 22 to 72 years, and 54% were female. We analysed statistically long-term outcome according to type. RESULTS : The results were as follows : 1. The overall outcome showed an implant success rate of 97.2% in posterior partially edentulous mandible 2. In the proportion of the fixture length ; 10mm (22.4%), 11.5-12.0mm (19.6%), 13.0mm (19.6%) fixture were respectively predominant in order. In the proportion of the fixture width ; 3.75mm (47.7%), 5.0mm (36.4%) were predominant in order. 3. According to surface types of fixture, success rate were pure titanium 95.9%, TPS coating 100%, HA coating 100%. 4. A total of the 107 implants showed 20 complications (18.7%) the most common complications (7cases) was loosening of the abutment screw and gold screw. 5. Prosthetic complications with regard to fixture number showed higher prevalence one implant (30%) two implant (12.9%), three implant (11.1%) in order. 6. According to the prosthetic type, complications of screw type were 10 cases and cementation type were 4 cases. CONCLUSION : This study offers efficacious results of implant supported fixed prostheses as an alternative to traditional prostheses in patients with posterior partial edentulism. Therefore, we think that implant prosthesis is a relatively safe and predictable method for restoring partially posterior edentulous areas.