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Design and Analysis of Decoupled Parallel Mechanism with Redundant Actuator
김선호,김선호,전동수,신현표,인우성,김종원 한국정밀공학회 2009 International Journal of Precision Engineering and Vol. No.
This paper presents a redundantly actuated six degrees-of-freedom parallel kinematic mechanism with a partially decoupled architecture in its rotational motion. This mechanism is developed to eliminate kinematic complexity of original Eclipse-II known as a redundant parallel mechanism. Since the original Eclipse-II mechanism use kinematic redundancy of parallel mechanism to achieve an advantage in enlarging the workspace of the system, it needs a motion planning algorithm to choose the specific control inputs to determine the desired motion trajectory. This motion planning algorithm causes difficulty in achieving real-time control performance due to its structural complexity. However the redundant parallel mechanism presented in this paper is a redundant parallel mechanism with partially decoupled architecture in its rotational motion. Therefore modified Eclipse-II redundant parallel mechanism can realize effective real-time control performances and continuous 360-degree rotational motion in any direction of the moving platform with six degrees of freedom.
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김선호,곽종구 한국원자력학회 2022 Nuclear Engineering and Technology Vol.54 No.10
It is important for an ICRF full wave code to simulate the SOL (Scrape Off Layer) plasma as well as the core inside of the LCFS (Last Closed Flux Surface) for the precise prediction of the coupling between the antenna and the core plasma in tokamaks. To this end, a two dimensional full wave code based on a Fourier spectral algorithm has been developed. The spectral algorithm and procedures are described and the simulation results for the minority heating in KSTAR are reported including electric field, power absorption and power flux
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김선호 대한의사학회 2017 醫史學 Vol.26 No.3
The military medical system of the Korean People’s Army (KPA) first appeared in August 1946 when a central military hospita was established at the headquarters. Inside the KPA, the military medical and veteran services were first established in February 1948. The military medical officers of the KPA were those who were initially engaged in North Korea’s health care sector. Most of the early military medical officers were those who had been trained in the Japanese medical system before liberation and were surgeons. After the establishment of the government in September 1948, Lee Dongwha rapidly introduced the medical system of the Soviet army into the KPA. The KPA military medical system was a mix of Soviet, Japanese and Chinese military medical systems. The medical section of the KPA was similar to that of the Japanese army, and the medical section of the lower army was similar to that of the Soviet army. The stretcher platoon of the KPA were similar to those of the Japanese and Chinese armies. The KPA mainly used Japanese medical equipment at the beginning, and after the establishment of the North Korean regime in September 1948, they were gradually replaced with Soviet products. The military medical office of the KPA were equipped with treatment rooms, laboratories, hospitals, pharmacy, and inpatient rooms. The military medical office purchased medical journals and specimens for medical research and set up a separate research fund. In addition, the military medical office was equipped with a laboratory for medical experiments and raised laboratory animals. The KPA military medical system was specialized in the fields of infectious disease prevention and preventive medicine. At the time, infectious disease in North Korea was mainly caused by bacteria and viruses in unsanitary living environments. The KPA set up a special anti-infectious disease department in consideration of the soldiers living in the collective facilities. The second characteristic of the KPA military medical system is preventive medicine. Since early 1946, North Korea has been interested in preventive medicine and has established various medical facilities and personnel. In line with this history of preventive medicine, the preventive department was installed in the KPA military medical system.
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김선호 역사문제연구소 2022 역사문제연구 Vol.26 No.1
When the North Korean government approved the unification of armed forces at a meeting with Stalin in March 1949, the North Korean government established a plan to increase the army. As a result, the North Korean Navy(NKN) was created on August 28, 1949, with military support from the Soviet Navy stationed in Chongjin Port. Unlike the Army and the Air Force, the North Korean government introduced the Soviet navy’s military doctrines by making the navy’s headquarters mostly from Koreans who grew up in the Soviet Union(USSR). In addition, the Soviet Union dispatched soldiers from the Pacific Fleet stationed in North Korea as military advisers to aid the reinforcement of the NKN. The NKN was founded just 10 months before the Korean War broke out, and the Soviet Union could not increase its fighting power because the Soviet Union did not provide enough combat traps. Also, the NKN was not completed until shortly before the Korean War, and the organization was being reorganized. As a result, the NKN participated in the Korean War with the lack of combat power of regular troops. 북한정부는 1949년 3월에 스탈린과 회담에서 무력통일방식이 간접적으로 승인되자, 1949년도 하기 인민군 증편계획을 수립해서 해군 창설을 개시했다. 그리고 청진항에 주둔한 소련 해군으로부터 무기·장비·교범·고문 등 군사지원을받아서 1949년 8월 28일에 정규 해군을 창설했다. 민족보위성은 육군과 달리해군에 병종지휘부를 설치해서 뒤늦게 창설된 해군의 전력을 급속히 증강시키려고 구상했다. 북한 해군이 육군·공군과 다른 점은 그 지휘부까지 대부분 소련에서 입북한고려인으로 구성되었다는 점이다. 북한 해군은 6·25전쟁이 발발하기 불과 10개월 전에 창설되었고 해상전투를 수행할 수 있는 전력을 거의 보유하지 못했다. 북한지도부는 이 같은 상황에서 소련군에 익숙한 고려인을 해군사령부에 집중적으로 배치해서 소련 해군의 현대적 군사교리를 급속히 도입했다. 민족보위성은 소련에서 연안방어 중심의 군사교리를 도입했고 6·25전쟁을준비하면서 해군에 독자적인 해상전투나 지상군에 대한 함포공격의 역할을 부여하지 않았다. 북한지도부는 2개 육전대를 후방 해안에 상륙시켜 후방을 교란하려 했고, 전략지역인 원산·청진·진남포에 방어부대를 편성하고 함정의 절반을계류시켜 국군 해군의 반격에 대비했다. 결국 북한 해군은 보조적 공격임무와 연안방어 임무를 맡고 6·25전쟁에 참전했다.
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김선호 한국비블리아학회 1999 한국비블리아학회지 Vol.10 No.-
본 연구의 목적은 디지털 도서관의 탐색 메카니즘의 구조, 디자인, 포맷, 용어 탐색결과 등에 대한 최종이용자의 만족도를 조사분석하여 새로운 대안을 제시하는 것이다. 이러한 연구목적을 달성하기 위하여. 표본으로 국가전자도서관 (http ://www. dlibrary. go. kr)의 탐색 메카니즘을 선택하고, 80명의 문헌정보학과 학생을 피험자로 선발한다. 그리고 최종이용자의 만족도를 설문지를 통하여 조사분석한다. The purpose of this study is to research and analyse the end user's satisfactions concerning the architecture, design, format, terminology, query formulation, hits, that is, the primary factors of the search mechanism in digital libraries. and then, to present its improvements. The search mechanism of National Digital Library in Korea is decided as the sample, and the 80 students who majored in the library and information science are selected as subjects. The end user's satisfactions are measured by questionnaire.
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