원통 탄성쉘의 응력해석

권혁동 空軍士官學校 1989 論文集 Vol.27 No.-

Carefully machined cylinder-to-two-cylinder shell was tested and the erperimentally determined stresses were compared with theoretical predictions obtained from a thin-shell finite-element analysis. The model was idealited structure consisting of cylindrical shells interesting at right angle and nozzles paralleled. The experimental results were compared to the finite-element predictions and these data can be utilized to the design and production of the elastic shells.

CDMA 기반 등대 원격 제어 시스템의 구축

권혁동,서기열,박계각,Kwon, Hyuk-Dong,Seo, Ki-Yeol,Park, Gyei-Kark 해양환경안전학회 2004 海洋環境安全學會誌 Vol.10 No.1

선박의 안전운항을 위해서 설치되어 있는 많은 수의 등대를 관리하기 위해서는 유지비가 과다하게 지출되고 있는 것이 현재의 상황이다. 이러한 이유로 등대를 원격 제어하는 시스템이 실제 운용되고 있지만, 위성 망이나 RF 망을 이용하기 때문에 과다한 통신비용이 발생하고, 단지 측정 데이터만을 전송하므로 실제 등대의 상태를 파악하기 어렵다. 따라서, 본 논문에서는 도서지역까지 확대된 이동 통신기술인 CDMA방식을 이용하여 등대를 양방향으로 원격 제어하고 감시하는 등대 원격 제어 시스템을 구축하여 그 효용성음 확인하였다. Many lighthouses have been built for safety navigation of vessel, but the management of lighthouses had to paid for maintenance costs. For that reason, the remote control system for the lighthouse is to be used, but the communication expense is very expensive because of the use of satellite communication network or the RF communication network Also, the state of lighthouse is difficult to analyze as transmit only measured data. Therefore, this paper embodied the remote control system for the lighthouse using CDMA method, that was extended to island area and we verified the effectiveness of the proposed system.

韓國의 學校 保建 敎育 政策에 관한 硏究

권혁동 釜山水産大學校 1992 論文集 Vol.48 No.-

This study rearranged the school health functions through arranging the theoretical background of school health and looking over its historical development progress. And it examined and analyzed the government official organization and manpower. The results are as follows : 1. In elementary school the homeroom teachers took mostly charge of health education, in middle and high school the nurse-teachers were in charge of it. And there was almost no education by the school doctor. 2. The occasional education in the region of health education was done when the environmental factors took place through the provision of school lunch, the physical checkup, the infectious disease control and the physical education, etc. 3. In the region of health education the systematic education was composed of the direct health education and the education through curriculum and special lectures. 4. The health education plans 1) should get a part of all the synthetic curriculums, 2) should be recognized as all the staff's responsibilities. 3) should make students take part in it, 4) should be a part of the whole health plans of the community, 5) should gain the help of the community, 6) should be continuous, 7) should be independent from other curriculums, 8) should have the results by execution without fail. 5. The school health education plans should be carried out systematically and decisively.

그대 거기에 있었음을

권혁동 예수살이공동체 2001 산위의 마을 Vol.4 No.-

체력이 복싱선수의 성적에 미치는 영향

권혁동 釜山水産大學校 1981 論文集 Vol.27 No.-

한국의 학교보건정책평가에 관한 연구

권혁동 釜山水産大學校 1992 論文集 Vol.48 No.-

로란-C 시스템의 현황과 효율적인 활용방안에 관한 연구

권혁동,서기열,박계각,Kwon, Hyuk-Dong,Seo, Ki-Yeol,Park, Gyei-Kark 해양환경안전학회 2004 海洋環境安全學會誌 Vol.10 No.2

20세기 중반이후 항법 시스템의 개발동기 및 유지는 군사적인 전술목적에 있었다고 말할 수 있다. 제2차 세계대전 이후 미소간의 냉전기간 중에도 양국은 각기 대응되는 첨단 항법시스템을 경쟁적으로 개발구축하여 왔다. 이러한 시스템들은 점차 군사목적 외에 일반에 공개되어 국가간 물류(物流)의 이동과 같은 경제 수송 활동에 있어 핵심역할을 담당하고 있다. 항법시스템은 크게 지상계시스템과 위성계시스템으로 나눌 수 있다. 지상계시스템의 대표적인 시스템은 로란-C(Long Rmge Navigation)이고, 위성계시스템의 대표적인 시스템으로 GPS를 말한다. 로란-C 시스템은 미국, EU, FERNS(Far East Radionavigation Service)둥 전 세계 국가 해상 및 육상에서 많이 이용한 시스템이지만, 현재는 그 역할을 위성항법 시스템인 GPS 및 DGPS가 많은 부분을 차지하고 있다. 위성계시스템의 획기적인 발전에 따라 지상계 중장거리 측위장치로는 유일하게 세계적으로 운영되고 있는 로란-C의 운영이용자의 감소와 더불어 로란-C항법장치의 역할에 대한 논란이 대두되고 있어 로란-C 항법 시스템의 실태와 활용방안에 대해 조명해보고, 우리나라 로란-C의 올바른 발전방향에 대해서 논의한다. The development motive and maintenance of navigation system were military strategy purpose since middle of 20th century. During cold war period between the United States and the Soviet since the Second World War, advanced navigation system that two countries are responded individually have done development competitively. These systems are exhibited on general except military purpose gradually and are taking charge of point role in economy transport activity such as transportation of logistics between the country. Navigation system can divide into ground system and satellite system. Representative system of ground system is Loran-C(Long Range Navigation), and representative system of satellite system is GPS(Global Position System). Loran-C system is a system that use much in all the world country sea and ground, but GPS and DGPS that present is a satellite navigation system are used much. According to development of satellite system, examine about actual conditions of Loran-C navigation system and practical use plan in this paper because there is controversy about role of Loran-C navigation device along with Loran-C's operation and user decrease, and discusses for Loran-C's development direction.

人體의 水中 適應에 관한 調査 硏究

權赫東 釜山水産大學校 1983 論文集 Vol.31 No.-

To research the adaptability of human body under water, this test was done from June, 5 to June, 6, 1983. When the data from the test were arranged and analyzed, the results were as follow: 1. For recovering body temperature when model group was tested, it took 15 minutes in a 10-minute test, 15 minutes in a 20-minute test, 25 minutes in a 30-minute test, and 40 minutes in a 40-minute test, 2. In pulse recovery of model group It took 25 minutes in a 10-minute test, 25 minutes in a 20-minute test, 40 minutes in a 30-minute test, and 55 minutes in a 40-minute test, 3. When comparison group was tested for recovering body temperature, It took 10 minutes in a 10-minute test, 10 minutes in a 20-minute test, 25 minutes in a 30-minute test, and 55 minutes in a 40-minute test, 4. Inpulse recovery of comparison group it took 20 minutes in a 10-minute test, 20 minutes in a 20-minute test, 25 minutes in a 30-minute test, and 30 minutes in a 40-minute test, 5. Before test and in normal condition, body temperature of Comparison group was 0.29C lower than that of model group. 6. In pulse, comparison group was 10.8 frequency less than that of model group.

水泳訓練이 心肺機能에 미치는 影響

權赫東 釜山水産大學校 1987 論文集 Vol.38 No.-

10세의 男學生 20名을 1986년 6월 1일 ~ 86년 7월 25일까지 8주간을 20분간에 걸쳐 水泳訓練을 실시한 結果 다음과 같이 나타났다. 1. 實驗 前後의 단위 身長에 의한 有意差 檢定結果 脈搏에 있어서는 t는 0.540이고, 0.60<p<0.50으로 그 差을 認定할 수 없었고, 肺活量과 Harvard Step Test에 있어서는 각각 0.01<p로 매우 意義있는 값으로 나타나 그 差를 確實히 認定할 수 있었다. 2. 實驗 以前의 단위 體重에 의한 有意差 檢定結果 脈搏은 0.50<p<0.40으로 意義가 없는 것으로 나타났고, 肺活量과 Harvard Step Test에서는 각각 0.01<p로 매우 意義있는 값으로 나타났다. 3. 實驗前 身長과 體重의 각 유목별 상관관계 중 身長과 脈搏의 관계는 r=-0.469로 確實한 역상관이 있는 것으로 나타났고, 體重과 脈搏과의 관계는 r=-0.16로 거의 상관이 없는 것으로 나타났다. 肺活量과 身長은 r=0.407의 確實한 상관관계로 나타났고, 體重과 肺活量은 r=0.095으로 거의 상관이 없었다. Harvard Step Test는 身長과는 r=0.481, 體重과는 r=0.010으로 각각 상관이 없는 것으로 나타났다. 4. 實驗後 身長과 體重의 각 유목별 상관관계는 脈搏에서 身長과 體重 사이에 각각 r=-0.407, r=-0.252로 나타나 身長과 脈搏과의 관계는 역상관이 있는 것으로 나타났고, 體重과는 약간 역상관이 있는 것으로 나타났다. 肺活量은 身長과 體重에서 각각 r=0.122, 0.387로 身長에서는 상관이 거의 없었고, 體重에서는 약간 있는 것으로 나타났다. Harvard Step Test에서는 身長과 體重에서 각각 r=0.291, r=0.074로 身長과의 관계는 약간 있고, 體重과의 관계는 거의 없는 것으로 나타났다. The experiment was done by the thought that swimming training would affect the organs of heart and lungs. We chose 20 elementary school students who are all 10 years old, and then made them practice swimming training in free style and the breast-stroke for 10 minutes, 6 times a week. In this method we trained them for 8 weeks. When we compared and analyzed the changes of the frequency of pulse, of pulse in Harvard Test, and of lungs' capacity before and experiment, the results were as follows: 1. The examination of the significant differences between before and after experiment by stature (per 1㎝) In case of pulse, the significant differences before and after experiment by weigh (per lkg) was 0.60<p<0.50, not significant. As for lungs' capacity and Harvard Test, each showed 0.01<P, 0.01<P, both were significant. 2. The examination of the significant differences before and after experiment by weight (per 1kg) As for pulse, it showed 0.50<P<0.40, was not significant. In lungs' capacity and Harvard Test, each showed 0.01<P, 0.01<P, both were significant. 3. Correlation of Stature and weight in each kind before experiment. The relation of stature and pulse, r=-0.469, had a sure reverse relation. The relation of weight and pulse, r=-0.161, had almost no relation. The relation of stature and lungs' capacity, r=0.407, had a sure relation. The relation of weight and lungs' capacity r=0.95, had almost no relation. The relation of stature and Harvard Test was r=0.181, and that of weight and Harvard Test was r=0.010, both had no relation 4. The relation of stature and weight in each kind after experiment. In Stature and pulse r=-0.407, a sure revese relation. In Stature and lungs' capacity, r=0.122, almost no relation. In weight and lungs' capacity, r=0.387, more or less relation. In Stature and Harvard Test, r=0.291, a little relation. In weight and Harvard Test, r=0.074, no relation. In the above results, two facts are proved: One is that general children were too fat in comparison with their stature, and the other is that swimming training brought much improvement in weight control and the function of heart and lungs.

韓國의 學校保建政策評價에 관한 硏究 : 釜山直韓市 中等學校를 중심으로 Focused on the Secondary Schools in Pusan City

權赫東 釜山水産大學校 1992 論文集 Vol.48 No.-

This thesis evaluated the school health system and professional manpowers among the school health policies of the secondary school in Pusan city. For this the evaluation criterion of Edward A. Suchman, who is an authority of policy evaluation parts of American medical services, was quoted and here endeavors, outcomes, proprieties, and efficiencies, etc. were valued. The results were as follows : First, in school health system we looked on the laws and regulations related with school health and administration organs and had the following results : The educational laws were established in December 31, 1949, and were revised 29 times. The school health laws were made in March 30, 1967, and were revised twice. The enforcement ordinance of the school health laws were formulated in November 25, 1969, and went through third reformations. Therefore in laws and regulations we recognized some efforts. As for the administration organs, under the American military government the physical education section of educational bureau tool charge of school health services, and after the foundation of Korean government the services continually belonged to physical education bureau, and then they were upward adjusted to the school health bureau owing to the creation of the physical education bureau of the education ministry in March 19, 1979. And then in October, 1981 the school health bureau was abolished and was downward adjusted to subsection level. Judging from these situations, we could see little efforts in organs. So in the respects of the results, the laws and regulations relative to school health had a considerable outcomes, but in organs there's not a great progress. The efficiency or propriety of the laws and regulations couldn't be recognized, so it is now arranged in some degrees and doesn't have great problems, but that of organs could be said not to have a basis of efficient activities, and also not to station the personnel at proper places, for the executive organ, that is, the committee of education or the board of education in charge of shools was too small. Secondly, in the security rate of a nurse-teacher among the professional health manpowers of school, middle schools had 92.90%, and high schools, 84.50%. This showed that they made great efforts. In the aspects of the security rate of a school doctor, middle schools had 64.30%, and high schools, 38.00%. This represented a little shortage. In that of a school druggist, middle shools had 3.60%, and high schools, 2.90%. As for a school dentist, middle school had 2.40%, and high scools, 5.60%. Both showed a few efforts and outcomes. And As one school had one nurse-teacher, also they were active for the health of students, we could say it was proper and efficient, But in the aspects of a school doctor, dentist, and druggist it was not efficient because they were only formally appointed and had no real activities.