적응형 알고리즘을 이용한 유도잡음 제거에 관한 연구

金基宣 陸軍士官學校 1981 한국군사학논집 Vol.21 No.-

수신 신호를 기록하는 경우 신호의 크기가 작을수록 녹음 장비는 신호대 잡음비의 개선이 요구된다. 본 논문은 특히 저주파 신호의 기록시 문제가 되는 부가잡음을 제거하기 위해 적용형 알고리즘을 응용하기 위한 시도로써 불필요한 에너지 성분을 축자적으로 제거함으로써 신호대 잡음비를 개선시키는데 있다. 기준입력이 신호성분을 전혀 포함하고 있지 않은 경우 출력의 이론적 신호대 잡음비는 양자화 과정에 따른 오차 이내로 수렴시킬 수 있음이 보여진다. 실험을 통하여 적응형 알고리즘이 실제 문제에서 잡음과 신호가 분리되는 과정에 적용됨을 보여주고 있다. 또한 실시간에서 동작하기 위한 적응형 필터의 모델로서는 지연 소자를 2단 사용하고 경사계수가 0.05인 경우가 바람직함이 제시되어 있다.

알콜 급식이 마우스의 IL-2 및 IL-6 生産과 腫瘍發生 그리고 其他 免疫反應 潛在力에 미치는 影響

金希宣,李正鎬,李憲九,李黃浩,朴榮敏,河大有 의과학연구소 1993 全北醫大論文集 Vol.17 No.1

The present study was undertaken to investigate the effect of ethanol feeding on IL2 and IL6 production, carcinogenesis induced by 3-Methylcholanthrene(MCA), natural killer cell activity(NKCA) and by other parameters of immunocompetency in ICR mice. Mice and rats were fed ad libitum both pellet and 10% ethanol(EOH) solution in their drinking water for various period(44-304 days). Control animals were fed a similardiet and water. It was found that mice fed EOH for 44 or 210 days showed a significant suppression in contact hypersen sitivity to dinitrofluorobenezne(DNFB), delayed -type hypersensitivity to d in it rofluorobenezne(DNFB), delayed-type hypersensitivity(DTH) reaction to sheep red blood cell(SRBC), a thymusOdependent antigen, polyvinylpyrrolidone(PVP), a thymus-independent antigen. The contiuous feeding of EOH for 60or 304 days before C. neoformans infection enhanced significantly the recovery of C. neoformans from brain, lung, liver and spleen of the infected mice as compared with that of control mice and the degree of this enhancement appeared to be greater in mice receiving EOH for longer duration. The mice feed EOH for215 dyas before, during and after gestation demonstrated the greater litter size and higher neonatal mortalityas compared with control, indicating prenatal EOH exposure may greatly affect the fetus. In an experiment designed to investigate the effect of EOH feeding on the production of IL-2 and IL-6 by thymocytes and splenocytes of mice, it was demonstrated that EOH feeding for 131 days did not cause any change in the capability of IL-2 production by their thymocytes and splenocytes. Interestingly, however, EOH feeding for the same duration clearly enhanced the IL-6 production by their thymocytes, but by their splenocytes. Fo rthe evaluation of the effect of EOH on carcinogenesis induced by MCA, the frequency of tumor production, the number of tumors per tumor bearing mouse(TBM) and average diameter of the largest tumor per TBM were examined as a function of time after initial MCA Mice fed EOH for 110 days before initial application of MCA showed higher frequency of tumor production when observed at 45th, 65th and 80th days, but not at 95th day, and also showed greater in both number of tumor per TBM and size of the largest tumor as compared with controls, strongly indicating that EOH may increase the incidence of cancer. To investigate the possible mechanisms responsible for enhancing effect of carcinogenesis, NKCA of splenocyte of ICR mice and Sprague-Dawley rats against YAC-1 cell was assessed by "single cell level assay". NKCA EOH may be responsible, at least in part, for enhancement of tumor induction and tumor growth, acting as promotor. Taken together, the present study strongly suggests, that EOH feeding may enhance IL-6 production, but not IL-2, and may suppress the NKCA and results in enhancement of the tumor production and tumor growth. This study also suggest that EOH feeding may suppress the humiral and cellular immune response and increase the susceptibility of mice to C.neoformans and that EOH feeding before, during and after pregnancy may affcet litter size and neonatal death.

SIMPLE Algorithm을 이용한 火災室의 熱 流體의 數値解析

金光宣,孫鳳世 社團法人 韓國消防學會 1992 한국화재소방학회논문지 Vol.6 No.1

제약규칙의 기술방식에 대하여

金榮宣 동아대학교 1992 국어국문학 Vol.11 No.-

水溶液에서 高嶺土에 依한 Orthophosphate의 除去

金文宣,鄭在灌 成均館大學校 科學技術硏究所 1986 論文集 Vol.37 No.1

The object of this study was to compare the effects of pH and of anions (Cl^-, SO_4^-2). in removal of orthophosphates front aqueous solutions by Korean kaoline(Hadong, Gyungnam) using a differential bed reactor. As the liquid-solid type reaction was usually complicated by the presence of resistance as a film diffusion, it became necessary to establish the operating conditions that minimized the influence of film diffusion. The investigation was an attempt to eliminate this diffusional effect and to determine the rates of removal of orthophosphates by a differential bed reactor approach. The results were as follows: 1) Under the conditions of flow rate of 100㎤/min and of reactor I.D. of 36mm, the film diffusion was minimized and the initial rate of orthophosphate removal was maximized. 2) The effect of pH on the removal of orthophosphates was increased considerably between pH 3 and pH 5 due to the increased H^+ion in solution within this range of pH. 3) The anions as chloride and sulfate reduced the efficiency of orthophosphate removal by kaoline. The reduction of orthophosphate removal was related inversely to the electrical charge of the anion. The reaction kinetics, which defines the mechanism of orthophosphates removal using kaoline studied in this experiment, was as follows: at no salt : r = 0. 0080C_a - 0.0029q_a^0.9 at 0.1M Cl^-/l : r = 0.0072C_a, - 0.0047q_a^0.9 at 0.1M SO_4^-2/l : r = 0.0067C_a - 0.0053q_a^0.9

대학 교양영어 교육의 문제점과 개선방안

金光宣,李大榮,河宗彦,李康貞 명지대학교 인문과학연구소 1991 인문과학연구논총 Vol.8 No.-

運輸從業員의 個人的 特性에 따른 信賴形成과 共同體意識 및 職務滿足간의 關係分析

金孝宣,朴大圭 尙志大學校 産業經營硏究所 1999 産業經營硏究 Vol.9 No.-

In this paper, the theories of confidence building, cooperative spirit and job satisfaction are described through the antecedent research, after the model-design and hypothesis for the empirical analysis about this relation are set, these are verified statistically. This study has been analyzed practically in compensation for transportation employees at Kyong Buk areas. The purposes of the research about relations among their confidence building, cooperative spirit and job satisfaction are to recognize the labor and management relationship of transportation industry, improve the productivity, build reliable society, settle the industrial peace, and realize the welfare state. In research model, the individual characteristics(independent variable) consist of the sex, age, scholarship, type of cars, and period of work. And intervening variable consists of the confidence building and cooperative spirit. Dependent varible is job satisfaction. The hypothesis about these are followed as like. First, it will be similar difference in effectiveness of group as to the personality. Second, job satisfaction will be similar difference with confidence building and cooperative spirit. The statistical verification and analytic results can contribute toward establishing the business strategy. Through this research, transportation employees who works in Kyong Buk and country is thinking that labor and management relationship will be constructed cooperatively when the trust is shaped, cooperative spirit is reinforced, and job satisfaction is accomplished.

地域社會開發過程上의 葛藤戰略에 관한 硏究

金男宣 대구대학교 새마을 . 지역사회개발연구소 1987 地域社會開發論叢 Vol.9 No.-

The objectives of this study is to make the conflict strategy for the functional conflict in Community Development, Because Conflicts always originate among individuals. groups and organizations related to Community Development. The research method for this study is to survey the literatures pertaining to the objectives of this study. There are considered many foreign-domestic literatures related to Communities and Community Development. Community Development Activities are divided Community Developmental planning and Community Integration. Community Development planning is to establish the systematic order for the intended change-process of Community Development, Because Community Development means the intended Change-process of Community. Community Integration is to adapt the coordinative technique related to Community Development planning that can be accomplished well. The Conflicts in Community Development Activities are originated by predisposing factors, Thus the precipitating factors enforce the conflicts originated by predisposing factors. The first conflicts in Community Development Activities are diffused and those are more strenghtened. Thus To resolve the problems within community becomes more difficult. But If Individuals, groups and organizations related to the resolution of community-problems cease the obstacle activities each other, agree to the conditions related to the obstacle problems, The conflicts can be resolved. Therefore The Conflicts through Community Development Activities are to be used from dysfunction to function. The Conflict-functional roles are variously found within Community. The Conflict strategy for this functional roles is to use disagreement against agreemental strategy. There are strategies used by the organizations, objective groups and revolutionaries related to Community Development. The processes of conflict strategy for making this conflict strategy are as follows; Step 1. Appraise the local leadership. Step 2. Analyze the community power structure. Step 3. Analyze the situation and territoriality. Step 4. Stimulate dissidents to voice grievances. Step 5. Originate the specific issues within community. Step 6. Demonstrate the value of power. From the above conflict strategies and processes, we can use functionally the conflicts which are originated though Community Development Activities, and effectively accomplish the objectives of Community Development Activities.

프로스트의 시에 나타난 여성상

金光宣 명지대학교 인문과학연구소 1995 인문과학연구논총 Vol.13 No.-

로버트 프로스트 : 人間條件에의 挑戰 Challenge to the Human Condition

金光宣 명지대학교 인문과학연구소 1992 인문과학연구논총 Vol.9 No.-

Robert Frost의 시를 논하거나 평하는 것을 종합해보면 Frost를 낭만주의, 자연주의 인도주의, 보수주의, 신비주의, 상징주의, 초월주의, 사실주의 그리고, 농부시인 등으로 꼬리표를 붙임으로써 “애매성”을 보이고 있다. 그러나 Frost의 시 세계를 면밀히 살펴보면 대자연속에서 태어나 자연과 더불어 살아가는 인간은 태어날 때부터 자신에게 주어진 조건과 대결하면서 살아가는 동안 온갖 갈등을 느끼며 살아가는 사람들이 주인공으로 등장하고 있다. 이러한 갈등에서 야기되는 인간문제에 Frost의 주된 관심사가 집중되어 있는 것으로 보인다.