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金泰成 부산대학교 1981 論文集 Vol.31 No.1
"Nathan der Weise" gilt als das am meisten gewu¨rdigte Werk Lessings. Die meisten Interpretationen haben sich auf die Forschung der Ringparabel konzentriert. Lessing selbst hat brieflich die Ringparabel sogar als "Schu¨ssel" zu seinem Drama bezeichnet. Ziel dieses Referats war zuerst die Bedeutung der Ringparabel fu¨r das Stueck zu beschreiben. Unsere naechste Leigrage heisst: Wie laesst sich die strukturelle Einordnung der Ringparabel in das Stueck beschreiben? Mit dieser Wendung des Problems ist ein Zusammenhang der Ringparabel mit der Handlung des Dramas entstanden. Parabel und dramatische Fabel steht in einer wechselbeziehung. In Nathans Erza¨hlung von den drei Ringen besitze der Stein des Ringes die magische Kraft, seine Besitzer vor Gott und den Menschen agnenehm zu machen. Die drei So¨hne streiten sich nach dem Tod des Vaters um die Echtheit ihres Erbes. Der echte Ring kann nicht mehr ermittelt werden. Bei Boccaccio bleibt die Frage nach der Wahrheit der Religionen bleibt unbeantwortet. Aber Lessing geht ueber Boccaccio hinaus. Er laesst die ratlosen Soehne einen Richter aufsuchen. Der Rat des Richters lautet: "Es eifre jeder seiner unbestochenen/Von Vorurteilen freien Liebe nach!" Wer diese Liebe hat, der hat Sanftmut und Ergebenheit in Gott. Jeder der Soehne sollte seinen Ring fuer den wahren erachten und diese Wahrheit in der Praxis sittlichen Handelns zu erweisen suchen. Die Ringe sind fuer Nathan zugleich echt und unecht. Sie sind echt, wenn sie die Echtheit in ihrer Wirkung erweisen. Die Echtheit des Ringes ist nur aus der sittlichen Bewaehrung seines Traegers zu erkennen. Von den Ringen deutet die Fabel auf die Religionen. Die Ring sind Sinnbilder fuer die drei geschichtlichen Offenbarungsreligionen. Die echte Religion ist an der sittlichen Tat iher Glaeubigen zu erkennen. In der Ringparabel eroertert Lessing das Verhaeltnis der drei positiven Religionen zueinander nicht auf dem Boden der theoretischen, sondern auf dem Boden der praktischen Vernunft. Lessing stellt das Suchen der Wahrheit hoeher als den Besitz der Wahrheit. Die Figuren dieses Dramas sind die Vertreter der drei Hauptreligionen (des Judentums, des Christentums und des Islams). In Nathan dem Weisen koennen wir die Gestalt der vollendeten Humanitaet sehen. So vermag er zum Lehrer und Erzieher fuer adnere werden. In dieser Hinsicht steht er an der Spitze der Figuren. Die Taetgkeit Nathans wird zum Symbol fuer das tolerante und humane Handeln. Erhat den goettlichen Willen in seinen eigenen Willen aufgenommen. Seine Verhaltenswise gruendet auf seiner Ansicht, dass die goettliche Vorsehung den Verlauf des menschlichen Schicksals lenke. Am Ende des "Nathan" wird sich die Familienbeziehung von Recha, Tempelherr und Saladin wiedererkannt. Dieser Gedanke von der utopischen Zukunft wird schon im Zentrum der Ringparabel sichtbar. Die Parabel ist nicht bloss die poetische Form, sondern ein notwendiges Bestandteil des dramatischen Vorgangs. Wir koennen bestaetigen, dass die Parabel entstehungsgeschichtlich als Keim, strukturell als Hoehepunkt, thematisch als Kern des Dramas anzusehen ist. Die dramatische Leistung in "Nathan" ist das Ergebnis der Integration von Fabel und Parabel.
WS<sub>2</sub>/Au/TiO<sub>2</sub> 촉매를 통한 이산화탄소 연료화
김태성,강미숙 한국공업화학회 2020 한국공업화학회 연구논문 초록집 Vol.2020 No.-
산업 혁명 이후 화석연료의 사용이 지속적으로 증가함에 따라 대기 중의 이산화탄소 농도가 증가하였다. 이 결과로 엘리뇨, 라니냐 등 다양한 환경 문제들이 발생하였고, 그 중에서도 온실가스에 의한 지구온난화가 심각한 문제로 대두되었다. 이에 많은 연구자들이 대기 중 이산화탄소 농도를 줄이기 위해 다양한 연구를 하고 있다. 본 연구에서는 광촉매를 이용한 이산화탄소 광환원에 대하여 연구를 진행하였다. 실험의 베이스 촉매로써 대표적인 광촉매인 TiO<sub>2</sub>를 사용하였다. TiO<sub>2</sub>의 단점인 가시광에서 감응이 떨어지고 전자와 정공의 재결합률이 높다는 점을 보완하기 위하여 sheet type WS<sub>2</sub>를 헤테로 접합시켜 가시광에서 감응도를 높이고자 하였다. 추가로 gold nanoparticle을 TiO<sub>2</sub>와 WS<sub>2</sub> 사이에 도핑하여 플라즈몬 효과를 이용하여 이산화탄소 광환원에 대한 촉매의 환원력을 높이고자 하였다. 합성된 촉매는 10시간동안 가시광선하에서 이산화탄소 광환원을 실시하였고, 생성물들은 GC를 통하여 검출하였다. 촉매의 물리화학적 특성은 XRD, PL, UV-Vis을 사용하여 분석하였다.
BLDC 전동기의 토크리플 저감을 위한 새로운 전류제어 알고리즘에 대한 연구
김태성,안성찬,현동석 전력전자학회 2001 전력전자학회 논문지 Vol.6 No.5
BLDC (Brushless DC) 전동기는 선형적인 토크 대 전류, 속도 대 전압특성을 갖고 있으며 기계적 전기적인 잡음이 없고, 가감속 제어가 용이하며, 토크 대 관성의 비가 매우 높아 소형으로 높은 출력을 낼 수 있다는 장점을 가지고 있다. 그러나 전기자 전류의 전환 (Commutation)시 고정자 권선의 인덕턴스 성분과 역기전력으로 인해 발생되는 전류리플은 BLDC 전동기의 구동시 발생되는 토크리플의 중요한 원인이 되어, 고정밀 서보계통에 대한 응용에 큰 장애가 되고 있다. 본 논문에서는 퓨리에 시리즈계수를 사용한 새로운 전류제어 알고리즘을 개발하여 상전류 전환시 발생하는 전류리플을 최소화함으로서 토크리플을 현저히 감소 시켰으며, BLDC 전동기의 구동을 위해 널리 사용되고 있는 UNIPOLAR PWM 방식과 시뮬레이션 및 실험을 통해 비교함으로써, 새로운 알고리즘의 효용성을 입증하고자 한다. The BLDC(Brushless DC) Motor is characterized by linear torque to current and speed to voltage. It has low acoustic noise and fast dynamic response. Moreover, it has high power density with high proportion of torque to inertia in spite of small size drive. However, when armature current is commutated, the current ripple is generated by the motor inductance components in stator windings and back-EMF. This current ripple caused to torque ripple. Therefore, it is difficult to apply the BLDC motor to a precision servo drive system. In this paper, a new current control algorithm using fourier series coefficients is proposed. This proposed algorithm can minimize torque ripple due to the phase current commutation of BLDC motor. Simulation and Experimental results prove the effectiveness at the Proposed algorithm through comparison with the conventional unipolar PWM method.
김태성,조남욱,이종환 한국산업경영시스템학회 2005 한국산업경영시스템학회 학술대회 Vol.2005 No.춘계
This study proposes a new approach which combines Data Envelopment Analysis (DEA) and the Analytic Hierarchy Process (AHP) techniques to effectively evaluate Decision Making Units (DMUs). While DEA evaluates a quantitative data set, employs linear programming to obtain input and output weights and ranks the performance of DMUs, AHP evaluates the qualitative data retrieved from expert opinions and other managerial information in specifying weights. The objective of this research is to design a decision support process for managers to incorporate positive aspects of DEA's absolute numerical evaluations and AHP's human preference structure values. It is believed that a pragmatic manager will be more receptive to the results that include subjective opinions incorporated into the evaluation of the efficiency of each DMU efficiency when the AHP and DEA are combined simultaneously. The WPDEA method provides better discrimination than the DEA method by reducing the number of efficient units.
Post-Linearization of Differential CMOS Low Noise Amplifier Using Cross-Coupled FETs
김태성,김성균,박진성,김병성 대한전자공학회 2008 Journal of semiconductor technology and science Vol.8 No.4
A post-linearization technique for the differrential CMOS LNA is presented. The proposed method uses an additional cross-coupled common-source FET pair to cancel out the third-order intermodulation (IM₃) current of the main differential amplifier. This technique is applied to enhance the linearity of CMOS LNA using 0.18-㎛ technology. The LNA achieved +10.2 ㏈m IIP3 with 13.7 ㏈ gain and 1.68 ㏈ NF at 2 ㎓ consuming 11.8 ㎃ from a 1.8-V supply. It shows IIP3 improvement by 6.6 ㏈ over the conventional cascode LNA without the linearizing circuit.
김태성 한국사회복지연구회(서울대학교 사회복지연구소) 2000 사회복지연구 Vol.15 No.1
The objective of this study is to explore the following question: if political democracy develops in Korea, social welfare expands, and if expands, which social welfare regime? First, in theoretical arguments, the study emphasizes that 1) pre-condition for social welfare expansion in political democracy needs trust among people in a society, 2) why majority prefer social welfare expansion in a democracy, 3) social welfare regimes are different depending on types of political democracy. Based on theses theoretical arguments, this paper suggests the following. First, there is a basic limit in social welfare expansion in Korea because of lack of trust among Korean people. Second, because interest group politics become stronger, while class politics has been weak, in Korea, there is a limit in expanding social welfare for the disadvantaged group which has weak political power. Third, because of these reasons, the Korean social welfare regime will be similar to the liberal welfare state like the United States, and show the characteristics of social welfare not as a social right, low decommodification, and low vertical income redistribution effect.