상악골과 비사골동에 이환된 백악질 골화성 섬유종(cemento-ssifying fibroma)의 치험례

권대현,김신유,남정순,구명숙,이봉서,권대근,김종배 大韓顎顔面成形再建外科學會 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.6

The cemento-ossifying fibroma is a benign fibro-osseous tumor that may behave in an aggressive pattern. Although found predominantly in the mandible, most of these unusual tumors may arise in the maxilla and paranasal sinuses. Especially these lesion in the maxilla and sinuses behave more aggressively and are more prone to recur compared to mandibular counterparts. Therefore, more radical approach may be recommended than expectant observation or curettage in the initial management of this neoplasm. This is a case report of cemento-ossifying fibroma extended to maxillary sinus and naso-ethmoidal area treated by wide surgical excision after repeated conservative treatments.

대장균에서 Thermus caldophilus GK24의 DNA Polymerase유전자의 고발현

권석태,김현규,김중수,이대실 성균관대학교 생명과학자원연구소 1997 生命資源科學硏究 Vol.4 No.2

Thermus caldophilus GK24 (Tca) DNA polymerase is highly useful enzyme for amplifying DNA fragments by polymerase chain reaction (PCR). A plasmid, pTCA, is expression vector for Tca DNA polymerase gene in Escherichia coli under the control of tac promoter and its expression level is low. For the high expression, the DNA sequence coding for NH_2-amino acid sequence of Tca DNA polymerase was changed by PCR, and then an expression vector pTCAM was constructed. The activity of Tca DNA polymerase in E. coli harboring for pTCAM has enhanced nearly 6-fold/ml than that for E. coli harboring pTCA.

Higenammine이 심근의 활동전압 및 수축에 미치는 영향

권평중,조성일,엄대용,이상돈 중앙대학교 의과대학 의과학연구소 1981 中央醫大誌 Vol.6 No.4

In order to investigate the action mechanism of higenamine on cardiac muscle cells, the isometric contraction and transmembrane action potential in rabbit papillary muscle preparations taken out from tight ventricles were observed. The isometric contraction and action potential were recorded in the control Tyrode solution and higenamine-Tyrode solution in which the preparations were kept beating (1 Hz.) for about 30 minutes to get stable data. The resting membrane potential, amplitude of action potential amplitude of overshoot potential, time of repolarization to 60%, 90% of the amplitude of action potential and the first derivatives of potential recorded transmembrane action potential in control Tyrode solution and higenamine (2.5×10^-7gm/ml) Tyrode solution in which showed about 130%-150% of positive inotropic effect compared with those controls. The following results were obtained. 1. Higenamine showed no effects on the time-to-peak tension. 2. Higenamine showed almost no effects on resting membrane potential, amplitude of action potential and overshoot potential. 3. Higenamine significantly shortened to repolarize 60% or 90% of the action potential from 218ms and 264ms in the controls to 200ms and 246ms respectively. (p<0.005) Therefore. the maximum values of the first derivatives of potential variations (- Vmax) in the plateau phase an d repolarization phase were also significantly increased from 16.3V/sec in the control groups to 17.3V/sec in the higenamine-treated groups. The above results which showed positive inotropic effect and simultaneously shortening of action potential duration by higenamine suggest possible involvement of the increase of slow inward current.

미술품 임대차계약에 대한 소고

권대우 홍익대학교 법학연구소 2002 법학연구 Vol.4 No.-

Der Mietvertrag u¨ber Kunstwerke wird durch Vereinbarungen zwischen dem Vermieter und dem Mieter abgeschlossen. Vereinbart warden sollen die wesentlichen Inhalte des Mietverha¨ltnisse: das Object, die Mietfrist, Miete usw. Der Vermieter ist verpfichtet, dem Mieter den unmittelbaren Besitz der vermieteten Sache zu u¨berlassen, zwar in dem der Mietvereinbarung entsprechenden, gebrauchsfa¨higen Zustand. Er verpfichtet sich nicht nur zur U¨bergabe, sondern auch soll fu¨r die Erhaltung des Mietgegenstandes in dem guten, geeigneten Zustand Ru¨cksicht nehmen. Er haftet fu¨r Rechts- und Sachma¨ngelhaftung. Er soll dem Mieter die notwendige Kosten und nntzliche Kosten fu¨r Mietobject ru¨ckerstatten. Der Mieter hat eine Verpflichtung, Miete vertragsma¨βig zu zahlen. Verpflichtet sich auch er, den Mietgegenstand gut zu verwahren und nach der Beendigung des Vertragsverha¨ltnisses zuru¨ckgeben. Kunstwerke als Mietobjet haben einigen Besonderheit. Sie sind in der Regel ein einziges Object, das nicht ersetzbar ist. Deshalb ist die Wertung nicht leicht. Die Feststellung der Versicherungspra¨mie ist nicht einfach, wenn ein Kunstwerke fu¨r ein Ausstellung in Ausland transportieren muβ. Der vertragsma¨βite Zustand eines Kunstwerks ist typisch der fu¨r die Ausstellung in einem offenen Raum. Als Kultursgut sollen die Rechtsverha¨ltnisse u¨ber Kunstwerke weiter untersucht werden.

중년 이후의 남성에 있어서 알콜 섭취가 C-reactive protein 및 관련인자들에 미치는 영향

권대근,성동진,김승권,송영주 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.6

The purpose of the present study was to investigate the effect of C-reactive protein level and related risk factors such as T-chol, TG, uric acid and albumin in middle-aged Korean men with the frequency of alcohol consumption. The subjects of the present study was 94 men of 50-years old ages men in Seoul, Korea. The subjects were classified into 3 groups by Frequencies of alcohol consumption as follows ; non-alcohol consumption group (NA), light alcohol consumption group(LA: once or twice per week), heavy alcohol consumption group(HA: drinks more than 3 times per week). The CRP and T-chol, level of HA group was higher than compared to NA group(p<.05). In terms of TG, UA and albumin concentration. there was no significant difference. however. the value of TG was slightly higher trend in the HA group. The relationship between CRP & TG, UA was shown to significantly inverse correlation and the relationship between CRP & albumin was shown to significantly reverse correlation(p<.001, respectively). From these results. there was suggested that CRP and related cardiovascular rise factors were increased with frequency of alcohol consumption and high level of blood CRP, TG, UA are potential risk factors of cardiovascular disease factors in middle-aged korean men.

중대산업사고 예방을 위한 종합위험관리체제(IRMS) 구축에 관한 연구

권혁면,성대현,김재현,임대식,김기영,편무욱,문일,고재욱,이영순,윤인섭 한국안전학회 2003 한국안전학회지 Vol.18 No.3

The Process Safety Management (PSM) by the Law of Industry, Safety and Health has been performed for preventing major accidents of chemical plants since 1996. In terms of preventing chemical accidents more precisely, it is essential to develop a tool for quantitative risk assessment. For this, KOSHA (Korea Occupational Safety and Health Agency) developed an Integrated Risk Management System (IRMS) . The system is designed to assimilate data on chemical plant hazards from external database, to integrate these data with location information (topographic and demographic), and to make them user-friendly accessible. The system consists of several main functions: display of five major Korean petrochemical complex layout, display of equipment layout with its information utilizing the external database, zonation of the hazard effected area with consequence analyses, the most probable accident scenario generation, accident/incident database and calculation of frequency of accident using equipment reliability database, etc. The highlight of IRMS is to provide the risk contours using GIS(Geographical Information System) technology. IRMS is intended to manage hazardous installation more systematically and effectively, to reduce the number of accident remarkably, further minimizing production loss in the plant. The system is now under application to about 500 PSM sites as well as and emergency authorities in Korea by KOSHA (Korea Occupational Safety and Health Agency)

인구와 면적을 이용한 대구시 생활폐기물의 배출특성에 관한 연구

권대원 대구산업정보대학 2000 논문집 Vol.14 No.2

This study was investigated to analyze the characteristics of solid waste generation in terms of area and population in Taegu using 6 influence factors such as total area, developed area, floor area of establishment, settled population and income level. Also, the impact of influence factors of municipal solid waste generation, such as floor area of establishments, settled population and income level, are considered as variable factors relying on region conditions. Although three factors were concerned in estimation model, its explanation level was reasonably high and become higher by more source separation. This study was suggested estimation model which could be used to predict solid waste generation in Taegu using 3 independence variables such as floor area, settled population and property tax.

NMF 기반 LDA 혼합 알고리즘을 이용한 실시간 얼굴인식 시스템에 관한 연구

권병수,강대성 東亞大學校附設情報技術硏究所 2005 情報技術硏究所論文誌 Vol.12 No.2

In this paper, we propose a new NLM(NMF-based LDA Mixture) algorithm for real-time face recognition system. This system greatly consists of the two parts: 1) face extraction part; 2) face recognition part. In the face extraction part we applied subtraction image, color filtering, eyes and mouth region detection, and normalization method, and then in the face recognition part we used NLM in extracted face candidate region images. The existing recognition system using only PCA(Principal Component Analysis) showed low recognition rates, and it was hard in the recognition system using only LDA(Linear Discriminants Analysis) to apply LDA directly when the training set is small. To overcome these shortcomings, we reduced dimension as the matrix that had non-negative value to be different from former eigenfaces and then applied LDA to the matrix in the proposed system. We have experimented using self-organized DAUFace database and ORL database offered by AT&T laboratory in Cambridge, U.K. to evaluated the performance of the proposed system. The experimental results showed that the proposed method outperformed PCA, LDA, ICA(Independent Component Analysis) and PCA-based LDA mixture method within the framework of recognition accuracy.

헤겔의 정신론에서 '감각적 인식'으로서의 직관

권대중 한국미학회 2003 美學 Vol.36 No.-

In der vorliegenden Arbeit kommt es auf Hegels Begriff der Anschauung in seiner enzyklopadischen Psychologie an, welche in der letzten Instanz seiner Philosophie des absoluten G eistes als Movens der These vom 'Ende der Kunst' fungiert. Hegels Lehre von der Anschauung lauft in der Reihenfolge von 'Gefuhl-Aufme rksamkeit-Anschauung'. Bevor Hegel die "eigentliche" Anschauung behandelt, m acht er namlich zuerst das Gefuhl zum Thema. 1) Das Gefuhl ist nach ihm die nie drigste Phase in der Entwicklung der Intelligenz. Der "Schein" des Subjekts, als ob es sich furdie Erkenntnis nach dem Gegenstand richten musse, tritt hier auf die verfuhrerischste Weise auf. Der Grund des Cefuhls ist die unmittelbare Einheit des Subjekts mit seinem Objekt, und eine solche Einheit ist nichts anderes als die vollige Verlorenheith bzw. Vergrabenheit des Subjekts im Gegenstand. 2) Diese primitivste Phase der Intelligenz wird in der Stufe der Aufmerksamkeit uberw nden. Die Grundbestimmung der Aufmerksamkeit liegt in ihrem Dopp elcharakter und ihrer Willkurlichkeit. Ihr Doppelcharakter besteht in der Gle ichzeitigkeit des subjektiven und des objektiven Mornents, und ihre Wi llkurlichkeit darin, daβ die Gegenstandsbezogenheit des aufmerkenden Subjekts l ediglich durch die Auswahl der Intelligenz zustande kommt. 3) Bei der eigentlichen Anschauung soll es um Hegels Unterscheidung zwischen der "Anschauung als solche" und der "wahrhaften Anschauung" gehen. Wahrend jene noch rein stoffartig e Intelligenz ist, ist diese eine durch ads Denken vermittelte(und deswegen ei ne intellektuelle) Anschauung. Insofern das Denken aber bei Hegel die unersetzb are letate Stufe der Intelligenz ist, hat diese wahrhafte Anschauung ihre Basis nich t in sich selbst, sondern lediglich im Denken. Wenn man aber die Diskussionseben e bis zum poietischen Bereich erweitert, laβt sich die wahrhafte Anschauung a ls ein reobjektiviertes Denken umdeuten. Diese Umdeutungsrnoglichkeit fuhrt auch dazu, daβ man im Bereich des absoluten Geistes selbst nach dem 'Ende der Kun st' eine neus, verklarte Gestalt der Kunst erwarten kann, und daβ dadurch au ch Hegels Theoretizismus korrigiert weden kann.

중등 컴퓨터과학교육을 위한 객체지향형 EPL '두리틀'의 적용 및 평가

권대용,길혜민,염용철,유승욱,進兼宗,靖久野,이원규 한국컴퓨터교육학회 2004 컴퓨터교육학회 논문지 Vol.7 No.6

제 7차 컴퓨터교과 교육과정은 소프트웨어 활용 부분에 치중되어 컴퓨터과학에 관한 원리교육이 이루어지지 못하고 있다. 한편, ACM K-12 컴퓨터과학 교육과정 모델에 관한 보고서에서는 현재의 컴퓨터교육이 그릇된 방향이며 컴퓨터과학 중심의 컴퓨터교육을 위해서 프로그래밍언어 교육을 통한 원리교육의 중요성을 강조하고 있다. 본 논문에서는 프로그래밍 체험학습을 위한 객체지향 기반의 새로운 교육용프로그래밍언어인 두리틀(Dolittle)을 소개한다. 두리틀은 간결한 구문과 한국어와의 대응성, 인크리멘탈 방식의 프로그래밍, 수치, 문자열, 배열과 같은 알고리즘과 구조화, 텍스트 위주의 프로그래밍 등의 설계방침을 적용한 언어이다. 중학생을 대상으로 실제 수업에 적용해 보고 학습효과를 분석한 결과, 객체지향기반이지만 클래스나 상속 등의 개념을 모르고도 활용 가능한 교육용프로그래밍언어라는 것을 확인할 수 있었다. 또한 객체와 메소드 활용을 통하여 프로그래밍 결과를 쉽게 확인할 수 있고 오류 수정이 용이하므로, 학생들의 높은 흥미도를 유지하면서 학업성취도를 향상시키고 차후 학습으로의 연계가 수월하였다. Current computer education is difficult to educate basic concepts and principals of the computer science because the 7th curriculum of computer education is focused on the application of software. According to the ACM K-12 report about the computer science education model, current computer education is taking the wrong way and we should put the highly priority on the education of the fundamentals through programming languages for a better computer education oriented to the computer science. This paper introduces a new object-oriented educational programming language "Dolittle'". The design principals of Dolittle are simple syntax of Korean, incremental programming, text based programming, aliasing of function, and object-oriented programming. Being applied to middle school classes, we can confirm that Dolittle is easy to learn, and gives rise to high interest and keeps interest through a course,and also is of great practical use in class for programming novice.