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      • Development of a T-DMB Monitoring System

        Kyung-Taek Lee1,Ki-Won Kwon,Yong-Suk Park,Sung-Jun Kim,Jong-Ho Paik 대한전자공학회 2008 ITC-CSCC :International Technical Conference on Ci Vol.2008 No.7

        With the start of T-DMB service, diverse multimedia broadcasting services became available in the high-speed mobile environment. In addition to high-quality digital radio (audio) and television (video), diverse data services, such as Dynamic Label Segment (DLS), JPEG Slideshow (SLS), Broadcast Web Site (BWS), Traffic and Travel Information (TTI), interactive service using Binary Format for Scenes (BIFS), and Visual Radio, are being serviced. Currently, there is an increase in demand in the market for T-DMB monitoring system that can support all the data service available. In this paper, we present T-DMB monitoring systems that can simultaneously decode 6 services of different format within the two ensemble, through suitable algorithms and multi-thread techniques.

      • KCI등재

        ISD 모델에 기초한 농업인 안전교육 프로그램 개발

        김진모,이택선,이경숙,김경란,길대환,김효철,이찬 한국농업교육학회 2007 농업교육과 인적자원개발 Vol.39 No.3

        이 연구의 목적은 ISD 모델에 기초하여 농업인 안전교육 프로그램을 개발하는데 있으며,이를 위해 분석-설계-개발-실행-평가의 다섯 단계로 구성된 개발모형을 설정하였다. 구체적인 프로그램 내용을 개발하기 위해 환경분석,학습자분석,과제분석을 실시하였고,그 결과를 반영하여 ‘안전의식 함양’,‘근골격계질환’,‘농약중독예방’,‘농기계 안전 사용’의 4개 모듈과 10개의 레슨을 설계하였다. 요구분석 및 설계 결과를 바탕으로 농업인 안전교육 프로그램의 교재/보조 자료/매체를 개발하였다. 교재의 경우,학습자용과 강사용을 구분하여 개발하였다. 개발된 프로그램 및 운영체제에 대한 검토 및 보완을 위한 전문가 협의회를 개최하여 프로그램 시연회를 실시한 후 교육프로그램을 수정,보완하였다. 그 후,농작업안전시범마을의 농업인을 대상으로 농업인 안전교육 프로그램을 시험 운영하였고,그 결과를 반영하여 농업인 안전교육 프로그램을 완성하였다. 또한 이상의 프로그램 개발 과정을 통해 나타난 논점을 토대로 향후 교육 프로그램 개발을 위한 시사점을 제공하였다. The purpose of this study was to develop a agricultural safety and health training program based on ISD Model. We set up 5step(Analysis, Design, Development, Implementation, Evaluation) model for developing the program. After analyzing environment, learner and task, four modules(① Safety and Health Mindset, ② Musculoskeletal System Disorders, ③ Agrichemical Poisoning Prevention, and ③ Using Farm Machines Safely) and 10 lessons were designed. We developed teaching materials and supplement materials for the Agricultural Safety and Health Training Program based on need analysis and program design. Teaching materials consisted of the learner's and instructor's. The developed program was examined by expert groups and the weak points were revised through professional workshop. Finally, we tested the Agricultural Safety and Health Training Program at agricultural safety and health model village and fixed the program by reflecting the test results.

      • 環境製品에 대한 消費者 行動에 관한 硏究

        이종호,정경택,김은환 公州大學校 經濟經營硏究所 2000 經濟經營硏究 Vol.1 No.-

        We should not regard the notion of Green Marketing as a narrow field which just treats environmental protection and recycling at the level of the pursuit for commercial gains but regard it something wild notion which promotes all the functions, goals and human life. Green marketing is a means by which an enterprise try to accomplish the social responsibility through the way of life approach centered on the quality of human life. In relation to above statement, the purpose of this study is to help a company build the effective marketing strategies by the study which measures the recognition of consumer about the sense of environment, the sense of consumer about the Green Marketing practiced by the company, verifies the purchase behavior of consumer to the environmental production, treats the interrelation between the demographic variables such as gender, ages, income, occupation, educational background of consumer, and the recognition of comsumer about the sense of environment, the attitude of consumer about environmental productions. So, the enterprise's production and marketing activity which ignores the environmental problem is turned the colder shoulder from consumer, in terms of this, enterprise must divert its passive attitude to active attitude and make production which has good intention for environment. Also enterprise must develope the technical skill to produce production which for environment, with the sense of responsibility and ethics enterprise must do its business.

      • 지하 공동에 의한 근거리 회절 패턴

        이택경 한국항공대학교 1995 論文集 Vol.33 No.-

        지하에 존재하는 공동이나 터널 등이 구조물을 탐지하기 위한 방법으로서 연속전자파에 의한 탐사법에 관하여 해석하였다. 송신 신호의 파장이 공동의 크기와 비슷해지면, 수신 신호의 진폭 패턴에서 공동의 윗쪽과 아랫쪽에 해당하는 위치에서 신호의 강한 감쇄가 나타난다. 전자파 회절 패턴에서 가장 강한 감쇄가 나타나는 주파수를 찾기 위하여 유전체 매질 내에 존재하는 무한 길이의 원통형 공동에 대하여 해석하였다. 근거리 영역에서 특정한 주파수에 대해 총전장의 진폭패턴에서 doeble nuul이나 single null이 나타나며, null이 나타나는 지점에서 위상은 180˚ 불연속이 나타난다. 원거리 영역에서는 null이 나타나지 않으며, 가장 강한 감쇄는 dip의 형태로 나타난다. 축소모형에 의한 실험을 하였으며, 신호의 감쇄 패턴이 계산 결과와 일치한다. For the detection and location of high contrast geological anomalies such as underground air cavities or tunnels, a cross-borehole continuous wave (CW) electromagnetic probing scheme is investigated. When the wavelength of the transmitting signal becomes comparable with th size of a cavity, two significant signal drops in the amplitude pattern of the received signal occur ar the points corresponding o the top and bottom boundaries of th cavity. To find th signal frequency providing the strongest double dips, diffraction patterns scattered by a circular cylindrical cavity in a dielectric medium are analyzed. At a specific frequency, the double dips in the amplitude pattern of the total field become double nulls or a single null in the near-field region. Furthermore, the phase of the total field jumps 180℃ at the null point. In the far-field region, however, thestrongest signal drop is evolved intodouble dips of finite signal drops. A scale-down experiment is performed and its double dip patterns agree well with the numerical simulation.

      • 12주간의 써키트 웨이트트레이닝이 중ㆍ장년기 남성의 건강관련체력에 미치는 영향

        이규성,김문희,오경택,김범수 한국체육대학교 체육과학연구소 2000 韓國體育大學校附屬 體育科學硏究所論文集 Vol.19 No.1

        The purpose of this study is to examine the change of health related physical fitness. The study conducted the experiment with 24 participants; three groups fo eight participants in each age group(40, 50 and 60's) The subjects are members of the G sports center. The results of this study are as followed. According to comprehensive results of the research, circuit weight training for 12 weeks appears to give a positive effects on middle aged men's health, and that large increase in body fat and lower strength is not an unavoidable result of aging but the result of an unhealthy life style. Putting the proper training for the middle-aged group into systematic and regular practice, exercise can delay the normal aging process and also maintain relative good health physiologically. I think we need to develop more rational and scientific exercise programs to build up physical strength and improve health.

      • 회절단층 영상법에 의한 초고주파 영상

        이택경 한국항공대학교 1993 論文集 Vol.31 No.-

        회절단층 영상법을 이용하여 유전체의 영상을 얻기 위한 초고주파 영상 기법을 연구하였다. 1차 Born 근사를 통하여 자유공간에 있는 무한 길이 유전체 기둥의 유전율 분포를구할 수 있음을 보였다. 회전하는 목표물의 영상을 구하기 위하여 극좌표계에서의 역산란 방법을 보였다. A microwave imaging of dielectric object using the diffraction tomography scheme is investigated. It is shown that the permittivity distribution of an infinitely long dielectric cylinder can be obtained under Born approximation. For the imaging of rotating object, Fourier inversion in cylindrical coordinate system is presented.

      • 유한요소법을 이용한 Sputtering Coating 장치용 진공용기의 응력해석

        이동명,오택열,한경천 경희대학교 산학협력기술연구원 1995 산학협력기술연구논문집 Vol.1 No.-

        In this study, stress analysis of the vacuum chamber of sputtering coating equipment was performed and its safely was confirmed. In order to enhance the self-analysis ability of the manufacturer, computer program was developed using finite element technique. Since door and chamber flanges are known to be the weakest parts of the vacuum chamber, the flanges were meshed as bilinear rectangle elements and analyzed. The results are confirmed by commercial software, NASTRAN. The calculated stresses are low enough to modify the chamber structure. This study is expected to be the motivation and the foundations of computer analysis and design technique of the manufacturer.

      • 忠南地域 屠畜豚의 肺病變으로부터 分離한 Actinobacillus pleuropneumoniae의 生物學的 및 免疫學的 特性

        이종훈,장경수,장치훈,김일택,정용성,김귀현,전무형 충남대학교 수의과대학 동물의과학연구소 1996 動物醫科學硏究誌 Vol.4 No.-

        An epidemiologic study on pleuropneumonia in the slaughter pigs(Chonan and Asan area, Chungnam province, Korea) during the period of January 1994 through December 1995 was conducted. Isolation of A. pleuropneumoniae was attempted in 425 pigs with pneumonic lesions. Biochemical properties, antimicrobial susceptibility, serotypes and pathogenicity of A. pleuropneumoniae isolates were investigated. In addition, outer membrane protein(OMP) of the isolates were extracted to determine its properties and immunogenicity in both mice and piglets. Of 3,395 slaughter pigs, pleuropneumonia was observed in 425 pigs(10.6%). A. pleuropneumoniae was isolated from 22 pigs(5.2%) out of 425 pigs with pneumonic lesions. The biochemical properties of all isolates were same as those of reference A. pleuropneumoniae strain. Among 22 isolates, 9, 1 and 12 isolates were serovar 2, 3 and 5, respectively. The results of antimicrobial susceptibility test revealed that the isolates showed high susceptibility to ciprofloxacin and cephalothin, moderate susceptibility to amikacin, gentamicin, kanamycin and streptomycin, and low susceptibility to erythromycin, tylosin and sulfadimethoxin. The isolates were varied in pathogenicity to mice. Median lethal dose of LE9402(serovar 2) and LE9511(serovar 5) were 9.2×10^7CFU and 2.8×10^7CFU, respectively. Specific pneumonic lesions were observed from the infected mice with clinical signs. Bacteria recovery rate was high in the lung, but low in heart blood and tracheas. Serovar 2 was found to be more pathogenic than serovar 5 in guinea pig. Mortality on guinea pigs inoculated with serovar 2(5.4×10^8 - 5.4×10^6CFU) abd serovar 5(2.8×10^8 - 2.8×10^6CFU) was 20-40% and 40-80%, respectively. A severe hemorrhagic lesions and focal pneumonic lesions were observed from dead guinea pigs. Bacteria recovery rate was relatively higher in the lung than that of other organs. In the SDS-PAGE analysis, OMP-enriched fractions of both isolates and reference strains contain common peptide bands equivalent to molecular weight of 17, 27, 42, 52 and 95Kd. In addition to common peptide bands, the bands which are specific to each isolate were also observed. The profiles of Sephadex G25 fractions showed 3 major peaks. The common peptide bands which were observed by SDS-PAGE of the crude OMPs were found i the peaks 1 and 2. The OMPs extracted from serovar 2(LE9402) and serovar 5(LE9511) provided high level of protection in mice(70-80%) and pigs(100%). All animals inoculated with OMPs were seroconverted, showing micro-agglutination titer of 640 to 1280.

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