직렬형 순간전압강하 보상기에 관한 연구

이택기,김한정 안성산업대학교 1997 論文集 Vol.29 No.2

This paper describes the Instantaneous Voltage Drop Compensator for instantaneous voltage drop. Instantaneous Voltage Drop Compensator has a capacitor bank as a compensation energy source. A serial type compensator has a shortage voltage compensation method. At a normal state, commercial voltage is supplied to a load. As voltage drops instantaneously the serial type compensator generates the shortage voltage by an inverter using the energy in capacitor bank and adds serially it to the input voltage. So, The load voltage remains constant. A 3Φ 20kva serial type Instantaneous Voltage Drop Compensator is made and also its controller is designed. The performance of the compensator is verified in experiments.

지구촌 한민족경제공동체의 이상과 현실

전택수 在外韓人學會 2002 在外韓人硏究 Vol.12 No.2

본 논문은 세계경제의 미래 모습에 대한 M. 카스텔(Castells, 1996)의 지적을 기초로 지구촌 한민족경제공동체의 구축이 필연적임을 밝히고, 지구촌 경제의 특성상 한민족경제공동체의 이념은 재외한민족 각자가 세계로부터 존경받는 사람이 되도록 하는 것임을 밝혔다. 이 이념의 실천적인 내용은 한민족 후예들이 현지 사회에서 정당한 방법으로 경제적 부를 창출하면서 물질적으로 풍요로운 생활을 영위하는 것이다. 그래서 경제공동체는 각국의 한인 후예들이 현지의 주류사회에서 자신의 경제적 이득을 제고하면서 모국의 경제적 발전에 이바지하는 방안을 모색하도록 지원할 것을 주요 목적으로 삼아야 한다. 이러한 이념을 바탕으로 재외한민족공동체가 570만 명의 재외 한민족이 각 사회의 주류사회에 진입하는 데 어떤 역할을 할 수 있는지를 밝혔다. 특히 한민족 후예들이 대부분 거주하는 미국, 중국, 일본, 러시아 등에서 이들의 바람직한 역할을 중심적으로 살펴보았다. 이들 나라들은 일차적으로는 지정학적으로, 그리고 이차적으로는 경제 관계의 밀접성 때문에 남북한 경제통합에도 매우 중요하다. 그 결과 재외한민족공동체가 나아갈 전체적인 방향은 한국과 각 나라 간의 교역 행태를 분석하고, 여기서 해외 동포들이 주역을 담당하도록 하는 것이다. 이와 함께 북한의 경제 성장도 본 공동체의 성공에서 간과할 수 없다고 판단하고 재외동포들이 북한경제의 성장에 기여할 역할을 제안하였다. On the basis of M. Castells' description on the future form of the global economy, this paper has argued that the formation of the Global Korean Economic Network is inevitable, and that the result will be to improve the lot of the overseas Korean diaspora, in that they will become more respected in the world. Practically, such an idea implies that the overseas Koreans will create economic wealth lawfully and devote themselves to the social development of their local countries. Therefore, such a Network should help overseas Korean both enhance their economic benefits in the mainstream of their local society, and should encourage them to find ways to devote themselves to the economic development of their mother land, Korea. This paper has shown the roles the Network can play for overseas Koreans who enter the mainstream of overseas local societies. In particular, we have focused our study to the Network's role in the U.S., Canada, China, Japan, and Russia, where 93% of the total overseas Korean population lives. These countries can play an important role in economic integration of south and North Korea not only because geopolitical closeness but also an economic front as major trade partners. Therefore, the Network's major task is to study the trade patterns between Korea and concerned countries, and to encourage and support those overseas Koreans who play a major role in the economic trade therein. It has also been suggested that since the economic growth of North Korea is also an important factor for the success of the Network, overseas Koreans should contribute to the consistent economic growth of North Korea.

四象體質別 腦血流 變化에 대한 臨床的 考察

安鐸源 대전대학교 한의학연구소 2002 한의학연구소 논문집 Vol.11 No.1

1.Purpose We inquire into difference of blood flow velocity according Sasang Constitution. 2.Method We selected observation group that they are 251 patients among of the patients who are had a medical early examination of stroke. We classified observation group by Sasang Constitution and compared each of measured blood flow velocity by TCC. 3.Result 1) We found out that Taeumin is highest in fat rate, height and blood pressure. 2. Blood flow mean velocity of MCA is not found out significant differene by Sasang Constitution. But, Taeumin is found out highest in left and right. 3) Taeumin is found out that blood flow velocity of Siphon sinus ICA is highest.

Cross Hole Type 비 연삭 밀링 인서트의 가공특성에 관한 연구

김택수,이상민,박휘근,채승수,이충석,손일복,김학규,이종찬 한국공작기계학회 2008 한국공작기계학회 추계학술대회논문집 Vol.2008 No.-

This paper reports some experimental results on the machining performance of non-ground cross hole type milling inserts. Six kinds of milling inserts were manufactured without using grinding process. Machining experiments were carried out to compare the machining performance of non-ground inserts with that of ground ones. The experimental results indicate that the cutting forces and surface roughnesses of machined surface of both ground and non-ground inserts are comparable.

經濟民主化와 市場經濟原理提高를 위한 經濟意識敎育에 관한 硏究

田宅秀 釜山水産大學校 1988 論文集 Vol.41 No.-

부하 불평형을 고려한 능동전력피터 성능 연구

이택기,박현식 안성산업대학교 2000 論文集 Vol.32 No.-

This paper presents the performance of a active power filter(APF) system in unbalanced load. The unbalanced load leads to negative sequence of current, and this makes 120㎐ ripple in dc-link voltage and increase the rating of APF. Thus, the separation of negative sequence was performed in synchronous reference frame and it was controlled to flow into supply network. The validity of this scheme is investigated through experimental results for a prototype APF system rated 10kVA.

財政膨脹에 따른 計劃豫算制度

金澤烈 朝鮮大學校 法政大學 1974 法政大論文集 Vol.2 No.-

The purpose of a vigorous long-range economic development plan is to attain a self sustaining growth of the national economy for a better standard of living in the future. But, the resources of the government are always less than we need to accomplish our national plans that we would like to do. Budgets and planning are inseparable. if budgeting can de improved, planning is bound to benefit. if both are improved, failures of coordination can stopped. PPBS has been called a system, that helps management make better decisions in allocation of resources among alternative courses of action for the attainment of the government objectives. My present study is the outcome of an inquiry into some of the financial administration problems basic to the obectives and methods of planned development vis-a-vis the strategic role of budget in the korean government. I briefly have described the budgetary concept for the economic development in general and why this new method must be developed. In short, PPBS distinctively deals with the choice in decision-making with the emphasis on systems analysis, cost-benefit analysis, on forward planning and using scarce re-sources with maximum ecomomy and efficiency. My next general observation concerns the main differences between the traditional Line-Item Budget System (L I B S) and the newly developed PPBS, especially the program budgting as a means of control as well as a means of evaluation. Its main contribution is in the form of better decisions leading to better government budgeting as the tool of developing finance and longterm planning. I emphasized that PPBS can be applied to the korean government by experimenting the new forms and new test progress through a test of the validity, work ability and adaptability of new planning technique and its execution. In conclution, this system can be improbed at Korean government, but not to anybody's is complete satisfaction. In this improvement, PPBS will eventually have a significant role.

대안적 수업설계론의 등장과 교육적 시사점

정택희 安岩敎育學會 1994 한국교육학연구 Vol.1 No.1

최근에 전통적인 수업설계에 대한 대안적 접근이 활발하게 탐색되고 있다. 그 대표적인 것의 하나가 수업설계에 대한 구성주의적 접근이다. 구성주의 학습관은 행동주의와 정보치리론 및 체제론에 입각한 객관주의적 학습관에 대비되는 특성을 가지고 있다. 이 학습관은 지식을 옳은 행태로 존재하는 객관적 실체가 아니라, 학습자가 객체와의 상호작용 경험을 통해서 구성하는 의미라고 본다. 따라서 의미구성을 촉진시킬 수 있는 학습경험의 제공이 요구되는데, 이런 경험과정설계는 지식을 촉진시킬 수 있는 경험과정 설계와는 달라야 한다고 본다. 이 글은 이러한 구성주의적 학습관이 수업설계와 평가활동에 주는 구체적인 시사점을 밝히고 있다.

청각장애인의 슬부 등속성 근력에 관한 연구

장명재,이택현 경희대학교 체육과학연구소 1997 體育學論文集 Vol.25 No.-

The purpose of this study was to investigate and compare knee Isokinetic muscular strength of deaf and normal population. For this purpose, 32 subjects(8 untrained deaf, 8 trained deaf, 8 deaf national athlete, 8 untrained normal) were selected. The results were as followings. 1.The peak torque in time of flexion 60˚/sec(right, left) showed great significant difference(p<.001). 180˚/sec 5, 25 repetitions(left) showed great significant difference(p<.01) and 240˚/sec(right) showed significant differences(p<.05). The peak torque in time of extension 60˚/sec(left) showed great significant difference(p<.07),60˚/sec(right), 180˚/sec 5 repetitions(left),25 repetitions(right. left) and 240˚/sec(right, left) showed significant difference(p<.05). And the others showed no significant difference. The peak torque%body weight in time of flexion 60˚/sec(right) showed great significant difference(p<.01), 60˚/sec(left) showed significant difference(p<.05). The peak torque%body weight in time of extension 60˚/sec(left), 180˚/sec 25 repetitions(left). 240˚/sec(right) showed significant difference(p<.05), 240˚ /sec(left) showed great significant difference(p<.01). And the others showed no significant difference. 3.The total work(BWR)%BW in time of flexion 60˚/sec(1eft) showed significant difference(P<.05). The total work(BWR)%BW in time of extension 60˚/sec(left), 180˚/sec 25 repetitions(left), 240˚/sec(left) showed significant difference(p<.05), And the others showed no significant difference. 4.The average power(BWR)%BW in time of flexion 60˚/sec(right, left) showed great significant difference(p<.01). The average power(BWR)%BW in time of extension 60˚/sec(left), 240˚/sec(left) showed great significant difference(P<.01). 240˚ /sec(right) showed significant difference(P<.05). And the others showed no significant difference. 5.The endurance ratio in time of extension 180˚/sec 25 repetitions(left), 240˚/sec(left) showed significant difference(p<.05). And the others showed no significant difference.

고성능 침입탐지 시스템을 위한 해시 기반 패턴 매칭 알고리즘

김규호,권택근 충남대학교 산업기술연구소 2006 산업기술연구논문집 Vol.21 No.1

네트워크 대역폭과 바이러스 패턴이 급격하게 증가하는 상황에서 기존의 소프트웨어 방법으로 구성한 침입탐지시스템(Intrusion Detection System)은 현재의 대역폭을 처리하기 쉽지 않고, 하드웨어 방법으로 구성한 침입탐지시스템은 대용량의 바이러스 패턴을 적용하기에 어려움이 따른다. 따라서 고성능으로 대용량의 바이러스 패턴 처리가 가능하게 하기 위해서는 기존에 존재하는 패턴 매치 알고리즘 이외에 다중 패턴 매치에 적합한 알고리즘이 필요하다. 본 논문에서는 고성능 패턴 매치를 위해 기본적으로 O(1)의 시간 복잡도를 갖는 해싱 기법을 이용하여 침입 탐지를 지원하는 고성능 패턴 매치 알고리즘을 제안한다. 해싱을 사용하여 빠른 검색을 할 수 있더라도 가능한 검색 횟수를 줄여야 고성능을 보장할 수 있다. 본 논문에서 제안하는 알고리즘은 한 번의 검색으로 다수 바이트를 처리하는 점핑 윈도우 패턴 매치(jumping window pattern matching) 기법을 이용하여 알고리즘을 구현하였으며 실험을 통하여 본 논문에서 제안한 알고리즘이 기존의 패턴 매치 알고리즘보다 높은 성능이 나타남을 보인다.