HYBRID VOLTERRA SYSTEM WITH TWO TYPES OF IMPULSES

Park, Jong-Seo,S.A. Belbas,Kim, Seon-Yu 晋州敎育大學校 科學敎育硏究院 2006 科學敎育硏究 Vol.29 No.-

본 연구의 목적은 충격을 받는 조건이 두 가지 유형과 다중 적분을 갖는 볼테라 적분 방정식의 어떤 특성을 포함하는 방정식의 색다른 부류를 조직적으로 확립하고 분석해 보고자 한다. 여기서 우리는 반복하는 방법에 의하여 주어진 조건의 적분방정식에 대한 해의 존재성과 유일성을 구조적으로 밝히는데 그 목적이 있다. 본 논문을 통한 발전적인 연구가 수행되면 여러 가지 자연현상을 모델화하여 적용함으로 인해 이론적인 부분뿐만 아니라 응용적인 면에서 아주 많이 적용될 것으로 생각되며 전자공학, 자동제어, 생물학, 의학 등의 다양한 실생활의 문제에 활용이 가능한 충분한 가치가 있으리라 생각한다. In this paper, we formulate and analyze a novel class of equations that contain some of the characteristics of Volterra intergral equations with multiple integrals and two types of impulsive terms. We will give a constructive proof of existence and uniqueness of solutions by an iteration method.

한국무예의 발전동향과 과제 및 전망

서충진,강유원,김이수 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.20 No.1

Where is the Oriental martial arts going in these days? Can it be separated with sports or physical education to get its own region? To get a solution from these questions, there are three parts of studies of the possible trends on Korean martial arts such as the actual conditions on educating coach of martial arts, the research about thesis of martial arts, and the actual conditions of related journals. For the conclusion, the following five solutions could be shown. At first, there should be a general modification on processing of educating the martial arts coach. 1. Expanding the items of martial arts can raise the level of coach's educating quality based on the curriculum, the contents, and the variety programs. 2. Martial arts sports, ordinary martial arts, and traditional martial arts must be unifiable and simple to develope its problems. 3. the importance of traditional martial arts and the qualified test of its coach must have a mutual preservation and maintenance through being related with each other between martial arts' each items. Second, it's necessary to train the martial arts with required elements of the recognition, the theory, the existence and the philosophy. Third, it's necessary to take shape of pyramidical structure through the long term policy of training martial arts. Forth, variety events of martial arts should be held regularly from the government. At last, it's necessary to expand the martial arts region and make variety activities from related academies or institutes.

진공증착 장비를 이용한 유기발광 소자 제작

서유석,박훈,홍진수,채희백 순천향대학교 기초과학연구소 2004 순천향자연과학연구 논문집 Vol.10 No.2

We fabricated OLEDs(organic light emitting diodes) by vacuum evaporation. In our experiments, well-known materials are used; indium-tin-oxide(ITO) coated glass for anode, Al for cathode. N,N'-diphenyl-N,N'-bis(3-methylpheny)1,1'-bipheny-4,4'-diamine (TPD) for hole-transport layer, and tris(8-hydrxyquinoline) aluminum (Alq3) for an emissive and electron-measured J-V,L-V and J-Current efficiency I-V-L by using Keithley 236 source-measure unit and Minolta Luminance meter LS-100.

관상동맥 누공에 의한 급성 심근 경색 1예

서유승,최재웅,송창섭,조용범,양진수,박준섭,정인수 대한내과학회 2003 대한내과학회지 Vol.65 No.2

관상동맥 동정맥루 기형은 매우 드문 질환으로 치료가 불필요한 경우가 대부분이나 coronary steal 현상으로 인해 증상이 발생하거나 합병증이 발생한 환자에 대해선 치료를 요한다. 최근에는 시술에 적합한 누공을 가진 선택된 환자군을 대상으로 카테터를 이용한 중재적 시술이 시행되어 수술적 치료와 유사한 결과를 얻고 있다. 저자들은 젊은 남자에서 관상동맥 동정맥루 기형과 동반된 급성 심근 경색증을 진단하여 비 수술적 방법인 카테타 코일 색전술로 성공적 치료 후 증상 및 심근 재관류에 호전을 보인 증례를 경험하였기에 문헌고찰과 함께 보고하는 바이다. We report a case of coronary fistula between the left anterior descending and main pulmonary artery complicating acute non-Q wave myocardial infarction. A 27-year-old man visited emergency department because of severe chest pain lasting two hours. The electrocardiogram showed ST segment elevation in precordial leads V3~6. Cardiac enzymes were as follows;CK-MB:36.44 IU/L T-T:0.489 ng/mL, CPK:542 IU/L, and LDH:475 IU/L. The thallium-201 dipyridamole stress perfusion scan showed perfusion defect and reversed redistribution in the anteroseptal wall. The coronary angiogram revealed coronary artery fistula between the proximal left anterior descending artery and main pulmonary artery without significant stenoses of coronary arteries. The result of ergonovine test was negative. After micro-coil embolization to the coronary fistula, symptoms were improved. Follow-up thallium-201 scan showed normalized blood flow in the left anteroseptal wall.

사고와 표현 원리로서의'유추'에 대한 고찰 : 張維의 「筆說」.「風竹說贈崔子鎌」.「曲木雪 」을 중심으로

서유경 한국문학교육학회 1998 문학교육학 Vol.2 No.-

They say that process of thought and of expression are necessary for writing. But in reality, we fail to teach the process of thinking. In this paper "analogy" will be studied among various principles of thought. This paper will chase backward and construct the process of thinking from a completed composition. The subjects of this study are Chang Yu's <A Weasel Brush Story>, <A Wind and Bamboo Story for Choi Ja-kyum> and <A Crooked Tree Story>. It is interesting to find that these works are made up of same "analogy" logic, but they show different aspects. This different aspect of analogy can be "a principle of thinking" and be used practically. <A Weasel Brush Story> is 'the extension of similar structure' type. This regards brush and man in the same light, and extend the structure of brush to the structure of man's world. This type conducts a new conclusion from the similarity of two subjects. <A Wind and Bamboo Story for Choi Ja-kyum> is 'the circulation structure' type. This pursues the man's moral nature in view of the case of bamboo. This type is same at 'the extension of similar structure' type in having a base of similarity of two subjects, but it is different because it finds a needed nature from the original source. This type is a form of abstraction of a needed condition or an essential element for the sake of the alikeness. <A Crooked Tree Story> is 'the duplex structure' type. In this type, analogy is developed twice. At first, crooked trees and men are regarded in the same light. Then the focus moves to the difference between two subjects. Finally, on the basis of the difference between trees and men, it is concluded that men's world is much more wrong and crooked. This type is developed in similarity first. Secondarily, it conducts a new view on the basis of difference. According to the types of analogy, the mechanism of analogy is divided into three patterns. In the 'the extension of similar structure' type, the mechanism is "relating". In the 'the circulation structure' type, the mechanism is "making up for". In the 'the duplex structure', the mechanism is "discriminating." As a result, it seems the study on the type and mechanism of analogy is significant in creative writing. Analogical inference can be used as the method for not only to get a new view on knowledge, but also to express them.

두개강내 출혈을 동반한 불응성 특발성 혈소판감소성 자반증의 CYCLOPHOSPHAMIDE 치험 1예

서정철,양태영,최연수,박유환,김완중,허경,정원영,정춘해 朝鮮大學校 附設 醫學硏究所 1993 The Medical Journal of Chosun University Vol.18 No.1

Idiopathic thrombocytopenic purpura(ITP) is an autoimmune bleeding disorder characterized by the development of antibodies to one's own platelets, which are then destroyed by phagocytosis in the spleen and liver. Its clinical manifestations are characterized by bleeding and the most serious complication is hemorrhage into the central nervous system, but which is rarely seen below 1%. In treating IPT, the therapy of first chice is administration of adrenocorticosteroid and r-globuline. If satisfactory results are not obtained, then splenectomy is recommended. If this also proves inadequate, then administration of immunosuppressants is carried out. 16-year-old male was admitted with complaints of left hemiplegia and nasal bleeding. This case may be developed spontaneous intracerebral hemorrhage causing thrombocytopenia and was treated by steroid, r-globuline and splenectomy, but satisfactory results are not obtained. After all, the paient was successfully treated with cyclophosphamide.

드라이브 인 라이프스타일에 따른 주유소 공간의 전략적 재구성

서유나 경기대학교 건축전문대학원 2006 경기대학교 건축대학원 논문집 Vol.10 No.-

도시는 시간의 흐름에 따라 멈춤 없이 변화하고, 변화의 흔적들은 누적되어 가고 있다. 누적된 도시는 지역마다 언제나 거의 같은 패턴으로 나타나는 공간들을 가지고 있다. 그 공간들은 버스정류장, 지하철역, 주유소, 편의점, 고가도로 하부, 주차장 등으로 표현되고 있다. 도시의 패턴으로 나타나는 공간들은 독립적인 존재가치 보다는 네트워크 공간으로서의 가능성을 갖고 있기 때문에 도시의 변화와 사용자들의 드라이브 인 라이프스타일에 따라 재조직 되면서 도시의 모습을 새롭게 변화시킬 것이다. 본 논문에서는 에너지원의 변화와 사용자들의 드라이브 인 라이프스타일이 새롭게 변화되어 도시의 패턴으로 작용하고 있는 공간 중 주유소 공간을 재구성한다. 현재의 주유소는 사람들에게 생활의 일부분이 되어 모든 생활과 관련한 편의를 제공하는 장소로, 즉 라이프 스테이션으로 자리 잡아가고 있으나 향후 에너지 공급과 수요의 변화에 따라 기존의 주유소 공간의 역할이 변화될 것으로 예상된다. 네트워크 공간으로서의 가능성을 가진 주유소 공간은 도시의 모습을 새롭게 바꿀 수 있는 잠재력을 가지고 있다는 것을 전제로 하여 드라이브 인 라이프스타일의 소비를 위한 공간이 되기를 지향한다. 본 논문의 과정은 · 주유소의 발전과정, 분포, 공간구성, 유외사업의 현황 등을 분석하여 현재 주유소공간이 가지고 있는 문제점을 제시한다. · 화석연료의 고갈과 환경오염 문제를 저감시키기 위한 대체에너지로서 수소에너지에 대한 전망을 예측하고, 수소에너지가 주 에너지원으로 사용된다고 가정하여 설계에 적용시킨다. · 공간 사용자들의 라이프스타일을 세대별 특징과 광고를 통해 분석하고, 텔레커뮤니케이션의 발달로 인한 정보전달의 가능성을 전제로 하여 설계에 적용시킨다. · 드라이브 인 라이프스타일이 공간조직에 미치는 영향을 바탕으로 건축적 요소들을 변형시키고, 경제성과 브랜드 스페이스의 가치를 고려하여 플러그인 방식으로서의 탱그램 퍼즐게임을 적용하여 유니트들을 플러그 인/아웃시킴으로서 공간을 시뮬레이션 한다. · 시뮬레이션 된 결과물로 도시를 읽어본다. Cities keep changing as time goes on, and the traces of the changes are being accumulated. Those cities include some specific spaces that almost always appear as the same pattern. Those spaces are the bus station, subway station, gas station, convenient store, parking lot, the lower part of the overpass, and so forth. Since they function as networking spaces rather than independent spaces, the spaces as the patterns of the city would change the appearance of the city with being reconstructed by the changes of the city and the drive-in lifestyle of the users. This thesis is reconstructing the space of the gas station where the change of energy source and the users' new drive-in lifestyle become a new pattern of the city. In these days, the gas station becomes a part of people's lives so that it becomes a life station where people could be serviced of all kinds of needs, but it is predicted that the space of the gas station would play another role followed by changes of future energy supply and demand. The gas station space intends to be a space for consuming the drive-in lifestyle, under the premise that the space of a gas station has potential of changing the city figure as well as possibility of networking space. The processes of this thesis are as follows: · Suggesting issues which the present space of the gas station has by analyzing the gas station's developing process, distribution, space construction, status of non-petroleum service, and so on. · Applying it to the plan the assumption that the hydrogen energy is used as a main source of energy, by forecasting the prospects for the hydrogen energy as a kind of alternative energy, which reduce the issues of exhausted fossil fuel and environmental contamination. · Analyzing the space users' lifestyle via the characteristics of each generation and advertisements, and applying it to the plan under the possibility of information conveyance based on the development of telecommunication. · Transforming the architectural elements based on how drive-in lifestyle has influence upon the space organization. Also, simulating the space by considering economical efficiency and value of the brand space, applying Tangram puzzle game as a way of plug-in, and making units plug-in and-out. · Reading the city by means of the simulated outcome.

ICT 통합에 의한 초·중등 교육과정의 재구성 방향 탐색

서유경,이준 한국컴퓨터교육학회 2004 컴퓨터교육학회 논문지 Vol.7 No.3

본 연구는 지식기반사회의 필수적 요소인 ICT가 초·중등교육에 있어서 단순한 도구적 위치가 아닌 초·중등 교유과정 전체 체계 속에서 위상과 역할이 재정비되어야 한다는 관점에서 교육과정과 ICT를 통합하는 방안을 탐색하였다. 우선적으로 현행 교육과정에 ICT가 어떻게 수용되어 있는지를 살펴보았다. 그 결과 현행 7차 교육과정 개정의 의도와 배경에는 지식기반사회의 관점을 포함하고 있으나 실질적인 교육과정 총론의 구성에는 반영하지 못하고 있는 것으로 파악되었다. 이와 함께 교육과정과 ICT 통합의 의미를 짚어보고, 그 원리를 ICT가 교육과정 구성 변인으로서 갖는 역할에서 찾아보았다. 마지막으로 ICT를 통합할 때에 현행 교육과정이 어떻게 변화해야 할지를 ICT 통합적 관점에서 유형화하여 제시하였다. In the knowledge-based society, ICT should take an integral part in K-12 curriculum. The purpose of this paper was to investigate the means to integrate ICT into K-12 curriculum. For the purpose, we reviewed the current national curriculum in light of ICT use. From the review, we identified that the recently revised 7th national curriculum reflected the necessity of using ICT in the view point of knowledge-based society, but it did not include the ICT specifically as a critical element of the curriculum. We discussed the meaning of ICT integrated curriculum, and also the role of ICT as a component of the curriculum. Finally, we suggested the direction of restructuring the curriculum as we consider integrating ICT into it.

인터넷 매체를 활용한 통합적 문학교육 연구

서유경 한국문학교육학회 2002 문학교육학 Vol.10 No.-

This study intended to show how to integrate korean language and literature education education activity around the literary works and through the internet media in existing separate area: speaking, listening, reading, writing, language-knowledge, literature. The point of this trial is that, although literary education is separated in the 7th curriculum, it can not help being integrated in real activity. We have common cognition about this integrated aspect, but approach to concrete methods has been not lively achieved yet. This is problem. Thus, I will argue that activity of speaking, listening, writing have to be integrated around the literary works. On this aspect, I consider the character of internet media as interactivity, visualization, making narrative. overcome of difference time and space and new self-creation. Besider I showed three integrated literature education activity connected with internet media property and a variable of korean education activity. That is showing. interactivity and self expression. This activity presuppose practical circumstances of computer and internet media. So, in order to make each activity, practical media circumstances have to be fulfilled.

<임경업전>의 비극성에 대한 표현 문화론적 고찰

서유경 한국문학교육학회 2004 문학교육학 Vol.13 No.-

This paper aims that it is necessary to approach the work culturally in the classical literature education. Because through the classical literature education, we pursue that our learner should reach the level of cultural creation as well as understanding the work essentially. So in this paper it is examined how tragic characteristic is expressed and how it can be applicated in to the literature education. Lim Kyung-up Cheon shows positively that how the fact of the specific history as called Lim Kyung-up merges with the expression-culture. Accordingly when we receive Lim Kyung-up Cheon as the literary work, we should consider the specialty of contemporary culture. Especially, in the field of literature education, this specialty such as tragic characteristic and expression culture is the primary factor of education. At the same time, the universality of Lim Kyung-up Chon as the literary work can be a means to the more abstract and general goal. Because both the sameness and the difference furnish the important framework of education from the viewpoint of the literature education. In the side of the discussion on the expression, it is significant that a certain convention of the expression continues from old times to now and the current audience can reproduce in different way. In the side of the discussion on the reception, it is suggestive that audience can recognize by regarding the culture of enjoying literature as the object and take pleasure in reading again. Consequently, this viewpoint of culture offer the audience not only learning the expression and reception of the work but also the experience of the empathy and appropriation.