TDMA 셀룰라 시스템에서 개별-탭 계수를 이용한 적응 등화기에 관한 연구

홍성수,박래수,한현택,김학춘,정찬주,나상동 조선대학교 동력자원연구소 1995 動力資源硏究所誌 Vol.17 No.1

Demodulation wants to adaptive equalizer to minimize interference of intersymbol which generate in multipath fading channel results from signal time and variety multi propagation through channel in digital radio network systems. Therefore using transition ratio of transfer and receiver system and the number of forward and backward using existing individual taps, we study improvement algorithms which generated bit error ratio by signal in frequence select fading. We analysis and compare linear equalizer and decision feedback nonlinear equalizer. Proposed algorithm is more efficent in fading environment when compared of step size by channel character which estimated existing least square and ITLMS algorithm. In this paper, using ITLMS algorithm by decision feedback BER is reduced for intersymbol interference by narrowband TDMA multipath fading in invironment without individual tap weight overlay.

초등학교용 웹 기반 교수-학습 자료 개발 전략

김홍래,정인기,신준식,이대형 춘천교육대학교 과학교육연구소 2001 과학교육연구 Vol.25 No.-

뉴럴네트워크를 이용한 이동로봇의 지능제어

김홍래,김용태,한성현 한국공작기계학회 2004 한국공작기계학회 추계학술대회논문집 Vol.2004 No.-

This paper presents a new approach to the design of cruise control system of a mobile robot with two drive wheel. The proposed control scheme uses a Gaussian function as a unit function in the fuzzy neural network, and back propagation algorithm to train the fuzzy neural network controller in the framework of the specialized learning architecture. It is proposed a learning controller consisting of two neural network-fuzzy based on independent reasoning and a connection net with fixed weights to simply the neural networks-fuzzy. The performance of the proposed controller is shown by performing the computer simulation for trajectory tracking of the speed and azimuth of a mobile robot driven by two independent wheels.

육성-비육돈에 있어서 항균제의 첨가효과

金大鎭,李尙勳,趙弘來 東亞大學校 大學院 1986 大學院論文集 Vol.11 No.-

This experiment was conducted to examine the effect of copper sulfate, nitrovin and virginiamycin in grower-finisher ration on the pig performance of body weight gain and feed conversion. These antimicrobial agent of copper sulfate, nitrovin and virginiamycin in grower and finisher diets were added 175ppm, 20ppm and 20ppm, respectively. Pigs fed rations containing nitrovin(837gram) of average daily body weight gain were more efficient than those of copper sulfate(815gram) and virginiamycin(804gram), but rations added nitrovin(2.90) was not improved than those of copper sulfate (2.77) and virginiamycin(2.79) in feed conversion(P<0.05).

면역점착적혈구응집반응에 의한 신증후출혈열환자 혈청중의 한탄 및 서울바이러스에 대한 항체형성

김홍래 고려대학교 의과대학 1986 고려대 의대 잡지 Vol.23 No.3

Immune adherence hemagglutination (IAHA) test was used to investigate the production of antibodies against Hantaan (HTN/83-138) and Seoul (SEO/80-39) viruses in sera from Hemorrhagic fever with renal syndrome (HFRS) patients who mere infected with Hantaan virus in Korea. The five patients diagnosed as typical HFRS have been bled a t weekly intervals starting from 3 days after onset of disease up to 66 days. Sera were tested to determine the titers of antibodies as well as the reactivities against Hantaan and Seoul viral antigens. The results are as follows; 1. IAHA antibodies against Hantaan viral antigen: The antibodies increasing from 3 days after the onset of disease were reached at peaks around one week later. The antibody titers were rised rapidly and the peak titers were reached at around 2 weeks after the disease and persisted for 2-3 weeks. Thereafter the titer were decreased slowly. 2. IAHA antibodies against Seoul viral antigen: The antibodies were detectable at as earlier days as 3 days after the onset of disease. The titers of antibody were peaked at around one week later and persisted with same level of titers until 2 months. However the titers of antibody were not as high as those against Hantaan viral antigen. 3. Reactivities of HFRS sera against Hantaan and Seoul viral antigens: The reactivity was always 4-16 times higher with Hantaan viral antigen than with Seoul viral antigen in all sera tested except the sera from very early days. The clear differences in reactivity between Hantaan and Seoul viral antigens were observed in all sera used regardless of times for bleeding suggesting homologous relationship between Hantaan virus and antibodies in sera of HFRS patients.

반응소결에 의한 근사기본형 Al₂O₃/ZrO₂복합체의 제조 및 치밀화

김철진,박홍래,신동우 慶尙大學校生産技術硏究所 1997 生産技術硏究所論文集 Vol.13 No.-

Al₂O₃/ZrO₂ composites were fabricated by the reaction bonding process. Starting materials of 20-70 vol% Al, 10-65 vol% Al₂O₃, and 15-20 vol% ZrO₂ were milled for 8 h using attritor with ZrO₂ball media and isostatically pressed into the rectangular shape. The compacts were heat treated with two steps at the temperatures of 1000-1200℃ and 1400-1650℃ for 3-12 h with the heating rates of 1℃ /min and 1-5℃ /min, respectively. The sintered specimens showed the relative density of 95% to the theoretical value with the linear shrinkage of 10.5%. The large pores and cracks were not observed in the sintered body.

3상 배전계통 WLAV 상태추정 알고리즘에 관한 연구

김홍래 순천향대학교 부설 산업기술연구소 2004 순천향 산업기술연구소논문집 Vol.10 No.2

This paper addresses the issue of the state estimation for electric power distribution systems. The developed state estimator produces an estimate of the actual three phase network status in the presence of all possible imbalances. The weighted least absolute value method is used to compute the states at all three phase nodes. The system models and formulations of the state estimator are given along with the inclusion of the line current magnitude data into the conventional measurement set. The system models including untransposed power lines and unbalanced loads are used to study the effects of imbalances among the phases. Measurement data are generated by using EMTP(electromagnetic transient program). The simulations are carried out for test systems with several measurement set, and the corresponding results are presented.

멧돼지 생식후 발생한 선모충증의 가족 내 집단발생사례

김에스더,편래현,박지한,김강호,최일,박홍훈,이용희,용태순,홍성관 대한감염학회 2003 감염과 화학요법 Vol.35 No.3

선모충증은 전 세계적으로 발생하는 기생충 인수공통감염의 한로 선모충의 유충에 감염된 육류를 덜 익혀 섭식시 발생하며 감염 초기에 설사, 복통의 증상이 나타나며 후기에 유충의 체내 이행으로 발열, 근염, 안검 부종 등이 동반된다. 확진은 근육 생검을 하여 피포 유충을 확인하는 것이고 최근에는 특이 항체를 측정하거나 유전자 검사와 같은 다양한 검사가 시도되고 있다. 저자 등은 4명의 한 가족이 야생 멧돼지를 생식한 후 선모충증의 전형적인 임상 증상 및 검사 소견을 보인 가족 내 집단발생사례를 경험하였기에 문헌 고찰과 함께 보고하는 바이다. Trichinosis is a worldwide parasitic infection caused by ingesting an uncooked raw meat containing viable larvae of nematode Trichinella. Although most cases have been reported in Western countries, the incidence has decreased due to strict control of meat handlings and improved hygiene in these countries. In Korea, the first case of Trichinella spiralis was reported in a patient who ingested an uncooked badger. We have also experienced four cases of Trichinella spiralis infestation among family members who showed typical clinical manifestations and laboratory findings after ingesting raw wild swine meat, and herein report the finding.

Dual-Arm 로봇의 자기구성 퍼지제어

김홍래,김종수,한성현 한국공작기계학회 2003 한국공작기계학회 추계학술대회논문집 Vol.2003 No.-

In this paper, it is presented a new technique to the design and real-time implementation of fuzzy control system based-on digital signal processors in order to improve the precision and robustness for system of industrial robot. Fuzzy control has emerged as one of the most active and fruitful areas for research in the applications of fuzzy set theory, especially in the real of industrial processes. In this thesis, a self-organizing fuzzy controller for the industrial robot manipulator with a actuator located at the base is studied. A fuzzy logic composed of linguistic conditional statements is employed by defining the relations of input-output variable of the controller, In the synthesis of a FLC, one of the most difficult problems is the determination of linguistic control rules from the human operators. To overcome this difficult, SOFC is proposed for a hierarchical control structure consisting of basic level and high level that modify control rules. The proposed SOFC scheme is simple in structure, fast in computation, and suitable for implementation of real-time control. Performance of the SOFC is illustrated by simulation and experimental results for robot with eight joints.

경주시민의 여가활동유형과 여가만족간의 관계

김홍석,이동수,조국래 경주대학교 지역개발연구소 2000 地域開發論叢 Vol.- No.3

The purpose of this study was to grasp the relationship between of leisure of leisure activity and leisure satisfaction of the workers. more details, The issues of this research was to hold the relationship between styles of activities which are composed of sport, hobby, sight seeing, travelling, listening, social, educational activities and leisure satisfaction being organized of psychological, educational, social, physiological, relaxational, and environmental satisfaction. Subjects of this study were sampled 412 workers. Statistics employed in this research were analysis of covariance(ANCOVA) and multiple classification analysis(MCA). Based on the procedures and results, the following conclusions were warranted. First, the styles of leisure activity of the citizens in Kyongju were influenced on the social leisure satisfaction, and the social leisure satisfaction was differed from according to styles of leisure activities of the citizens in Kyongju. and then it was revealed high on sports activity. Second, 송 styles of leisure activity of the citizens in Kyongju were influenced on the physical leisure satisfaction, and the physical leisure satisfaction was differed from according to styles of leisure activities of the citizens in Kyongju. and then it was revealed high on social intercourse activity. Third, the styles of leisure activity of the citizens in Kyongju were influenced on the psychological leisure satisfaction, and the psychological leisure satisfaction was differed from according to styles of leisure activities of the citizens in Kyongju. and then it was revealed high on sports activity. Forth, the styles of leisure activity of the citizens in Kyongju were influenced on 송 educational leisure satisfaction, and the leisure satisfaction was differed from according to styles of leisure activities of the citizens in Kyongju and then it was revealed high on sights seeing activity. Fifth, the styles of leisure activity of the citizens in Kyongju were influenced on the relaxational leisure satisfaction, and the relaxational leisure satisfaction was differed from according to styles of leisure activities of the citizens in Kyongju and then it was revealed high on sports activity. Sixth, the styles of leisure activity of the citizens in Lyongju were influenced on the environmental leisure satisfaction, and the environmental leisure satisfaction was differed from according to styles of leisure activities of the citizens in Kyongju and then it was revealed high on sports activity.