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이범석(Lee, Bum-Seok),이주용(Lee, Joo-Yong),노윤석(No, Yun-Seok),유수훈(Ryu, Soo-Hoon),이호정(Lee, Ho-Jeong) 한국교육시설학회 2007 敎育施設 Vol.14 No.4
The purpose of this study is to develop the category, intelligent element technologies and detail items for application of intelligent school. The result of this study will be a basic data to improve the intelligent school. For this purpose, analyze domestic and foreign intelligent system and through interview, survey with professional group, developed item was evaluated and for verifying and reappraising the items the researcher visited and interviewed teachers of three elementary schools. Developed intelligent items were composed of twelve basic technologies and fifty-four detail technologies.
탄도미사일 하층 방어 수행을 위한 발사대 배치 효과도 분석
권혁훈,이범석,김윤환,최관범,Kwon, Hyuck-Hoon,Lee, Bum-Seok,Kim, Yoon-Hwan,Choi, Kwan-Bum 한국군사과학기술학회 2013 한국군사과학기술학회지 Vol.16 No.5
For a lower tier defense, the distance between a launcher and an engagement control station is quite important to estimate the proper defense area and to effectively arrange missile launchers. In this paper, we have analyzed an effectiveness of anti-ballistic missile launcher arrangement for the lower tier defense against the ballistic missile. The operation concept, specific configuration and aerodynamic characteristics of the ballistic missile such as SCUD-B/C, Nodong are considered in order to develop a realistic engagement simulation. The diverse engagement results through numerical simulations are provided to conduct the effectiveness analysis of anti-ballistic missiles.
이희동(Hee Dong Lee),권오준(Oh Joon Kwon),이범석(Bum Seok Lee),노경호(Kyung Ho Noh) 한국항공우주학회 2011 韓國航空宇宙學會誌 Vol.39 No.12
제자리 비행하는 헬리콥터 전기체 형상으로부터 발사되는 유도무기 운동을 모사하기 위해 비정렬 중첩격자기법을 6자유도 운동 기법과 연계하여 비정상 해석을 수행하였다. 주로터, 꼬리로터, 그리고 유도무기를 포함하는 동체로 구성되는 헬리콥터 전기체 형상에 대한 비정상 해석을 수행하였으며, 6자유도 운동 기법을 이용하여 헬리콥터에서 발사되는 유도 무기의 초기 발사 거동을 예측하였다. 발사위치 및 유도무기의 추력크기에 따른 발사거동을 비교하였으며, 주로터에서 발생하는 비정상 내리흐름에 따른 유도무기의 비행 특성을 분석하였다. Unsteady numerical analysis was performed to simulate air-launched missiles from a complete helicopter in hover by using an unstructured overset mesh flow solver coupled with a module of six degree-of-freedom motion of equations. The unsteady computations have been performed to obtain flow fields around the complete helicopter including main rotor, tail rotor, and fuselage equipped with multiple missiles, and six-DOF simulation has been performed to predict the behavior of the air-launched missile. The effects of the launching position and the missile thrust on the trajectory of the missile were investigated as well as the aerodynamic interference of the air-launched missile under the unsteady downwash produced by main rotor.
용융 블렌딩법에 의한 PPC/EVAc 블렌드의 모폴로지 및 열적 특성
남병욱 ( Byeong Uk Nam ),정동석 ( Dong Seok Jeong ),이범석 ( Bum Seok Lee ) 한국공업화학회 2010 응용화학 Vol.14 No.1
PPC (Polypropylene carbonate) has been an charming green material due to containing carbon dioxide. PPC is made from copolymerization of CO2 with propylene oxide (PO) using a catalyst. However this polymer has fool mechanical property and relatively low glass transition temperature (Tg) and thermal decomposition temperature. Therefore, we blended PPC and EVAc (ethylene vinyl acetate) with overall compositions to enhance mechanical property and thermal property. Mechanical property and thermal property of PPC/EVAc blends was investigated by DMA (Dynamic Mechanical Analyzer) and TGA (Thermogravimetric analysis) respectively. Compatibility of PPC/EVAc blends was proved by FESEM (Field Emission Scanning Electron Microscope). As a result, we could find all compositions of PPC/EVAc blends are immiscible. However we could see thermal stability is improved as EVAc content increased.
항공 우주 해상 : 선내 수집데이터를 활용하는 선박 및 육상 서비스를 위한 선박용 어플리케이션 시스템 설계 및 구현
강남선 ( Nam Seon Kang ),김용대 ( Yong Dea Kim ),김상용 ( Sang Yong Kim ),이범석 ( Bum Seok Lee ) 한국항행학회 2016 韓國航行學會論文誌 Vol.20 No.2
본 논문에서는 선내에서 수집되는 데이터를 이용하는 선박과 육상의 어플리케이션 서비스의 효율적인 데이터 통합관리를 위한 선박용 어플리케이션 시스템을 설계하고 모듈을 구현하였다. 선박용 어플리케이션 시스템은 선내 수집 데이터를 활용하는 선박과 육상의 서비스를 지원하고 개별 장비간 원활한 연동 서비스를 제공하기 위하여 IALA에서 논의되고 있는 데이터 공유 시스템 모델과 ISO 16425의 XML 구조를 적용하였으며, 시스템 운영을 위한 공통 모듈과 데이터 수집 및 통합관리를 위한 윈도우 서비스, 관리를 위한 웹서비스 모듈을 구현하였다. In this study, has designed the ship application system for efficient data integration management of onboard ship and shore application/service utilizing data collected onboard ship, and has implemented the module. In order to supports onboard ship and shore service utilizing onboard ship collected data and provide a easy to access among individual devices, the ship application system applied the XML structure of ISO 16425 and the data sharing system model discussed in IALA, and the common module for system operation, a windows service for data collection/integral management, and web service module for management has been implemented.
한국 양궁선수들의 부상으로 생긴 어깨 통증의 역학에 대한 연구
김영숙 ( Young-sook Kim ),김두섭 ( Doo-sup Kim ),신지수 ( Ji-su Shin ),김성화 ( Sung-hwa Kim ),이범석 ( Bum-seok Lee ),박지수 ( Ji-su Park ),조원길 ( Won-gil Cho ) 대한스포츠의학회 2021 대한스포츠의학회지 Vol.39 No.4
Purpose: There has been a lack of study on the pains of Korean archers, who have been getting remarkable results in international competitions. In this study, we investigated the epidemiology of shoulder pain, which is known as the most commonly complained symptom of Korean archers. Methods: The participants were 58 elite archers in the city of Gwangju, South Korea. The method of the study was a retrospective cohort study by questionnaire and ultrasound and physical examination. Variables of individual characteristics, training patterns, the character of pain were analyzed in different age groups. Furthermore, groups were divided into those with shoulder pain and those without pain to analyze each group’s shoulder function. Results: The most common injury was shoulder injury (65.6%), and hand injury was the second-highest prevalent injury (29.3%). These two injuries were most prevalent in all age groups. Among 58 participants, 40 showed shoulder pain, but most were mild (n=30, 51.7%) and severe pain was observed in some participants (n=2, 3.5%). Mild pain was most common in each group and it showed the highest prevalence in college students (70.0%). Pain was most observed in the drawing arm, and it was triggered most when drawing the bow. In the shoulder function test category, Constant-Murley score and American Shoulder and Elbow Surgeons score were observed the lowest in the group with shoulder pain with statistical significance. Conclusion: Shoulder injury had a high prevalence in Korean archers. Correspondingly, those with shoulder pain had lower shoulder function test scores.
공용해,이범석 순천향대학교 부설 산업기술연구소 1998 순천향 산업기술연구소논문집 Vol.3 No.3
Nowadays many Bulletin Board Systems(BBS) are available on Internet environment. These BBSs are especially well suited on broadcasting multimedia information. Most BBSs use Common Gateway Interface(CGI) in connecting BBSs to database systems. But CGI method is not efficient dealing a large amount of information. So we have studied and implemented an efficient Web based BBS that connects database system.