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      • KCI우수등재

        VLSI / CAD 응용 프로그램을 위한 구조적 뷰 생성기

        음두헌(Doohun Eum) 한국정보과학회 1992 정보과학회논문지 Vol.19 No.3

        VLSI/CAD 데이타는 일반적으로 관계형 튜플 형태로 나타내진다[UW-87]. 그러나 CAD 응용 프로그램들은 대량의 동일 데이타를 반복적으로 검색하는 특성이 있는데, 이러한 요구를 기존의 관계형 데이타베이스 시스템은 비효율적으로 지원한다[CATT-91]. 본 논문에서는 이러한 문제점을 해결하기 위한 구조-뷰 생성기의 설계 및 구현을 기술한다. 구조-뷰 생성기는 관계형 테이블들에 저장되어 있는 VLSI/CAD 데이타를 C 언어로 효율적인 조작이 가능한 자료구조(구조-뷰)로 변환시켜 준다. 구조-뷰 생성기가 지원하는 변환언어를 이용하여 실제 VLSI/CAD 툴들의 자료구조 생성부분에 소요되는 프로그래밍 양을 기존의 C 구현에 비해 약 1/10로 줄일 수 있었다. 구조-뷰 생성기는 C 구현에 비해 자료구조 생성에 약 4배의 CPU 싸이클을 요한다. Current VLSI/CAD applications operate in batch mode. That is, all the data are dumped from files to the application data structures at the beginning of a session, and are copied back at the end of a session[CATT-91]. In studying VLSI/CAD data, we noticed that they are often represented in formats similar to relational tuples[UW-87]. Therefore, they can be stored easily in relational tabels. However, it is generally agreed that conventional relational database systems are inefficient in interactive mode for VLSI/CAD applications, since such applications often access large amounts of data repetitively[CATT-91]. In order to solve this problem, we designed and implemented structured-view constructor[EUM-91], a data mapping subsystem that converts VLSI/CAD data stored in relational tables into internal data structures so that they can be efficiently manipulated in C. By using our data mapping language, we could reduce the amount of code required by the data-structure construction parts of some real VLSI/CAD tools to about 1/10 of that required by C implementation. Our structured-view constructor consumes several times more CPU cycles.

      • KCI등재

        스포츠 품성 프로그램 개발 및 효과검증

        엄혁주 ( Hyok Ju Eum ),최영준 ( Young Jun Choi ),문익수 ( Ik Soo Moon ) 한국스포츠심리학회 2013 한국스포츠심리학회지 Vol.24 No.1

        본 연구의 목적은 스포츠에 참여하는 초등학생들의 품성을 발달시키기 위하여 스포츠품성 프로그램의 모형을 개발하는 데에 있다. 본 연구는 두 부분으로 나눌 수 있다. 첫째, 스포츠 품성 프로그램 모형을 개발하고, 이를 바탕으로 스포츠품성 프로그램을 개발, 제작하는 것이다. 둘째, 앞서 개발된 스포츠품성프로그램의 효과를 검증하는 것이다. 본 스포츠품성 개념 모형은 Lickona(1991)의 이론을 바탕으로 엄혁주(2012)의 연구에서 나타난 9개의 구성요소의 발달에 초점을 두었다. 본 모형에 입각하여 스포츠품성프로그램을 설계·개발하고 초등학교 5, 6학년 학생 33명을 대상으로 그 효과를 검증하였다. 분석 결과, 실험집단과 통제집단 사이에 유의미한 차이가 나타났으며, 이는 실험에 사용한 스포츠품성 프로그램이 스포츠에 참여하는 초등학생의 품성 발달에 긍정적인 영향을 미쳤음을 의미한다. 마지막으로, 분석결과에 대한 논의를 바탕으로 제언을 제시하였다. The purpose of this study was to develop a Sport Character program (SCP) appropriate for the higher elementary students; and to test its effects on sport character factors. The program development was based on the conceptual reflections Eum`s results about Lickona`s character theory. This SCP was verified by the educational program development process ADDIE, that is, analysis, design, development, implementation, and evaluation. Firstly, in the phase of analysis, learners`` developmental characteristics were analyzed and followed by task analysis. Secondly, in the design stage, objects that were defined on the basis of taskanalysis were explored developed as a teaching model for character education through sport, teaching and learning strategy, and teaching media. Thirdly, in the development stage, teaching materials were developed. The newly designed program was made up of 14 sessions, 40 minutes per session, so that it could be carried out after school. The program was implemented in an elementary school. The fifth and sixth grade students (N=61) from after school classes participated in the program, They were divided into two groups; treatment group and controlled group. All the measurement tools are as following: Sport character scale, Self-esteem questionnaire, and Emotion control scale were all used for pretest and posttest. The experimental group showed significantly higher scores than the control group on sport characters scores. This result proves that the SCP developed in this study has effect on developing children`s character through sports.

      • 저전압/고용량 DRAM 회로를 위한 Half-VDD 전압 발생기 설계

        이재형,우엄찬,박무훈,최중경,하판봉,김영희 국립7개대학공동논문집간행위원회 2005 공업기술연구 Vol.5 No.-

        A half-VDD voltage generator(VHDD) using PMOS pull-up and NMOS pull-down transistors, and each of the gate voltage is able to swing at CMOS voltage level was newly proposed. Designed with these, pull-up current was made to be proportional to (VDD-|V_(TP)|)^2 and pull-down current was made to be proportional to (VDD-|V_(TN)|)^2. Also, being turned on pull-up and pull-down transistors at the same time was prevented by using short-circuit current protection circuit. Test chips which were designed by using 0.35μm CMOS twin-well process technology were fabricated and the result of measurement was suitable for low-boltage DRAMs.

      • 컴퓨터 Vision을 위한 3차원 Range영상 분할 및 식별

        황병곤,임은복 대구대학교 산업기술연구소 1989 産業技術硏究 Vol.8 No.-

        In this paper, 3-dimensional object segmentation and classification is proposed. Planar object is segmented using jump and internal boundaries. Curved object is segmented using clustering method. Segmented surfaces are classified by using curvature functions and angle mesurement of normal vectors. These procedures have bee successfully applied to the synthetic range images and shows good classified.

      • Assessment of High-Resolution Gridded Temperature Data Improved by a Statistical Interpolation Method

        Yeo min Jeong1,Hyung-Il Eum1 한국방재학회 2016 Journal of Disaster Management Vol.1 No.1

        '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 7시까지 원문보기가 가능합니다.

        Abstract High-resolution climate information is an essential factor not only to understand the characteristics of temporal and spatial climate distributions but also to evaluate the impacts of climate change on various sectors, such as water resources, agricultural, and economic fields. The high-resolution grid data generated by a GIS-based regression model might have a few extreme values at some grid points where complex topography or sparse observational networks exist. In this study, the Inverse Distance Weighting (IDW) method was applied to properly smooth the overly predicted values of Improved GIS-based Regression Model (IGISRM), called IDW-IGISRM grid data, at the same resolution for daily maximum temperature (TMAX) and minimum temperature (TMIN) from 2001 to 2010 over South Korea. We carried out a sensitivity test to various radius of influence and decided the most suitable radius of influence of 9 km. IDW-IGISRM was compared with IGISRM to assess the effectiveness of IDW-IGISRM with regard to spatial patterns over 243 AWS observational points and four performance measures at all AWS stations and four selected stations that showed larger errors over the calibration period. The results showed that improving the spatial pattern and the effectiveness of the IDW method were prominent more in extreme temperature occurrence season, i.e. summer for TMAX and winter for TMIN. In addition, all quantitative performance metrics were improved by IDW-IGISRM except for BIAS. Mean absolute error and root mean square error were reduced, more considerable in summer for TMAX and winter for TMIN. Larger improvements were found at the selected four stations when extreme temperatures might occur. These results indicate that IDW-IGISRM can improve the predictive performance of IGISRM for extreme values, consequently Abstract High-resolution climate information is an essential factor not only to understand the characteristics of temporal and spatial climate distributions but also to evaluate the impacts of climate change on various sectors, such as water resources, agricultural, and economic fields. The high-resolution grid data generated by a GIS-based regression model might have a few extreme values at some grid points where complex topography or sparse observational networks exist. In this study, the Inverse Distance Weighting (IDW) method was applied to properly smooth the overly predicted values of Improved GIS-based Regression Model (IGISRM), called IDW-IGISRM grid data, at the same resolution for daily maximum temperature (TMAX) and minimum temperature (TMIN) from 2001 to 2010 over South Korea. We carried out a sensitivity test to various radius of influence and decided the most suitable radius of influence of 9 km. IDW-IGISRM was compared with IGISRM to assess the effectiveness of IDW-IGISRM with regard to spatial patterns over 243 AWS observational points and four performance measures at all AWS stations and four selected stations that showed larger errors over the calibration period. The results showed that improving the spatial pattern and the effectiveness of the IDW method were prominent more in extreme temperature occurrence season, i.e. summer for TMAX and winter for TMIN. In addition, all quantitative performance metrics were improved by IDW-IGISRM except for BIAS. Mean absolute error and root mean square error were reduced, more considerable in summer for TMAX and winter for TMIN. Larger improvements were found at the selected four stations when extreme temperatures might occur. These results indicate that IDW-IGISRM can improve the predictive performance of IGISRM for extreme values, consequently

      • 자가 면역성 간염에서 자가항체의 발현 양상과 스테로이드 치료의 효과

        박기오,채경훈,허원석,강윤세,정재훈,김연수,문희석,이엄석,김선문,이병석,김남재,이헌영 충남대학교 의과대학 의학연구소 2003 충남의대잡지 Vol.30 No.1

        목적 : 최근 8년간 본원에서 경험한 자기면역성 간염의 혈액학적 특징과 스테로이드의 치료효과를 알아보고자 본 연구를 시행하였다. 방법 : 1996년 이후부터 2002년까지 충남대학교 병원에서 1999년 International Autoimmune Hepatitis Group(LAHG)에서 제시한 수정 진단 기준안에 의거하여 총 진단점수가 probable 이상에 해당하는 환자들을 대상으로 임상적 특징, 검사실 및 조직 소견과 스테로이드와 azathioprine의 치료 효과를 후향적으로 조사하였다. 결과 : 9예의 환자들은 여성이 78%, 40대가 많았고, 급성 발병이 33.3%, 피로감, 식욕부진 및 황달 등이 나타났으며, 항핵항체가 55.6%에서 그리고 항평활근 항체가 77.8%에서 양성이었고, 동반 질환은 류마치스 관절염이 2예, 특발성 혈소판 감소증 1예, Henoch-Sch nlein 자반증 및 그레브스병이 각각 1예 씩이었다. 7예에 대해서 스테로이드와 azathioprine으로 치료하여 생화학적 임상적 완해가 이루어져서 유효한 치료 결과를 얻었다. 결론 : 자가면역성 간염은 우리 나라에서 원인을 찾을 수 없는 만성 간질환의 경우, 특히 중년여성에서 다른 자가면역성 질환이 동반되었을 때 자가면역성 간염을 의심하여 자가항체 선별검사를 시행해 보아야 할 것으로 생각된다. 향후 다기관 연구를 통하여 좀 더 많은 증례를 모으고 전향적인 연구를 시행하여야 할 필요가 있다. Although autoimmune hepatitis(AIH) is common in western contries, some studties have been reported in Korea. The aim of the study was to analyze the clinical and histological features and expression pattern of the autoantibody and to examine clinical course of AIH in Korea. For 9 patients diagnosed as having AIH in our hospital since 1996, we reviewed medical records and analyzed clinical and laboratory findings retrospectively. They had a probable or definite AIH according to the revised criteria of International AIH group. The mean age was 42.7(21∼68)years and 7(77.8%) were female. Three of them(33.3%) showed acute hepatitis and five of them showed cirrhosis. Fatigue and anorexia were the most frequently complained symptoms(55.6%). Four patients(44.4%) were accompanied with other autoimmune diseases. Antinuclear antibody was detected in 5(55.6%) and anti-smooth muscle antibody was detected in 7(77.8%). Three patients showed focal picemeal necrosis and four showed periportal fibrosis. Among 7 patients who received immunosuppressive therapy, six patients(85.7%) showed initial response. and biochemical and serologic remission were achived in 5(71.4%) and 3(42.8%) patients, AIH seems to be partly responsible for chronic liver disease of unknown etiology in Korea. AIH should be suspected in female patients with unknown chronic liver disease of unknown etiolgy, especially accompanied with other autoimmune disease. The clinical characteristics of AIH may not be quite different from those of Western countries.

      • 간세포암과 감별이 어려웠던 악성중피종 치험 1예

        김선문,허원석,채경훈,강윤세,정재훈,김연수,박기오,문희석,이엄석,김석현,성재규,이병석,이헌영,신경숙,조준식,송인상,강대영 충남대학교 의학연구소 2003 충남의대잡지 Vol.30 No.2

        Malignant peritoneal mesothelioma is a rare neoplasm that arises from the mesothelium of a serosal cavity and is a rapidly fatal disease with a median survival of 4 to 12 months for untreated cases. Recently, we experienced a case with malignant peritoneal mesothelioma who was suspected hepatocelluar carcioma by abdominal CT scan and was confirmed by biopsy including immunohistochemical stain(calretinin) after surgery. We performed tumor excisions and wedge resection of the liver(segment Ⅷ)and inserted Tencoff catheter in abdominal cavity at 25th day of post-operation. We treated with intraperitoneal paclitaxel(25mg/m^(2)/day for 5 days) six courses monthly. She was well tolerable and is still living without any evidence of recurrence for 14th month of post-operation.

      • KCI등재후보

        방과 후 태권도 교육 참여가 체력, 품성, 기본심리욕구에 미치는 영향

        엄혁주 ( Hyok Ju Eum ),김상엽 ( Sang Yeob Kim ) 국기원 2016 국기원태권도연구 Vol.7 No.2

        이 연구는 방과 후 태권도 교육에 참여한 초등학생들의 체력, 품성, 그리고 기본심리욕구가 시기별로 어떤 차이를 보이는지 밝혀내는데 그 목적이 있었다. 이를 위해 수도권 G 지역의 초등학교 2곳 5, 6학년 학생들 136명을 대상으로 연구가 진행되었다. 체력측정은 교육부가 개발하고 현재 학교에서 실시되고 있는 PAPS 기준에 맞춰 측정하였으며, 품성 측정을 위해서는 엄혁주(2012)가 개발한 스포츠 품성 척도를, 기본심리욕구 측정은 박중길(2009)이 표준화한 질문지를 사용하였다. 이들 설문지는 신뢰도와 타당도를 검증한 후 사용하였다. 설문조사를 통해 수집된자료는 빈도분석, 탐색적 요인분석, 신뢰도 분석, 반복측정 분산분석을 실시하였다. 그 결과, 체력, 품성 그리고 기본심리욕구는 시기별로 유의미한 차이를 보이는 것으로 나타났다. 이를 초등학생의 지속적이고 규칙적인 태권도 교육 참여에 따른 심리, 품성, 동기와 관련하여 논의하였다. The purpose of this study was to explore fitness, character and basic psychological needs based on participation of elementary school student in after school taekwondo activities. In order to accomplish the purpose of this study a survey was conducted with 136 elementary school students in G city who are taking part in after school taekwondo activities. As for research tools used in this study, the measures of PAPS by ministry of education, sport character developed by Eum(2012) and basic psychological needs developed by Park(2009) was modified and supplemented as research tools to this study``s subject and purposes. Frequency analysis, exploratory factor analysis, reliability analysis, and repeated ANOVA were conducted. The data analyses based on the above have derived the following results. The level of participation in taekwondo activities influenced fitness, character and basic psychological needs. These results were discussed in terms of psychological, emotional and motivation based on participation of elementary school students in after-school taekwondo activities.

      • A Characterization of Sasakian Manifolds of Constant C-holomorphic sectional Curvature

        Eum, Sang-Seup 成均館大學校 1976 論文集 Vol.18 No.-

        §1에서는 개(槪)접촉계량 다양체 M에서의 적분곡선인 C-항해선을 정의하고 이 C-항해선을 리-만 다양체 ‘M의 촉지선에 대응시키는 소위 GL-변환을 도입한다. §2에서는 이 GL-변환은 M이 Sasaki 다양체일 때 적분가능임을 확인한다. §3에서는 M이 Sasaki다양체일 경우를 고찰하고 ‘M이 정곡률인 리-만 다양체일 때 이 ’M에 GL-댕으되는 M은 C-정칙 단면곡률이 일정한 다양체이고 또한 이 역도 성립함을 증명한다. §4에서는 M이 Cosymplectic 인 다양체일 경우를 고찰하고 ‘M이 정곡률인 리-만 다양체이면 이 ’M에 GL-대응되는 M은 평탄다양체임을 증명한다. §5에서는 §3과 §4에서의 두 정리를 결합하여 C-정칙 단면곡률이 일정한 Sasaki 다양체를 한 CL-변환에 의하여 특징지운다. At first in §1, we define a C-loxodrome which is an integral curve of a certain differential equation in an almost contact metric manifold M, and introduce a GL-transformation which carries C-loxodromes of M to geodesics of a Riemannian manifold 'M. In §2, we certity the integrability of the GL-transformation between a Sasakian manifold M and a Riemannian manifold 'M. In §3, we prove that a Sasakian manifold M corresponded to a Riemannian manifold of constant curvature 'M by a GL-transformation is of constant C-holomorphic sectional curvature, and vice-versa. In §4, we show that if the manifold M discussed in §3 is cosymplectic, then M is flat, and vice-versa. In §5, combining two theorems stated in §3 and §4, we characterize the Sasakian manifolds of constant C-holomorphic sectional curvature by a CL-transformation which is combined by two GL-transformations.

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