진화알고리즘과 퍼지시스템을 이용한 단기부하예측 시스템개발에 관한 연구

張右晳,李性穆,姜渙一 명지대학교 산업기술연구소 2006 産業技術硏究所論文集 Vol.25 No.-

This paper proposes a time series prediction method for the nonllinear system using the fuzzy system and the evolutionay strategy and the genetic algorithm. At first, we obtain the optimal fuzzy membership function using the evolutionary strategy or genetic algorithm. With the optimal fuzzy rules and its input differences, a better time prediction series system may be obtained. We obtain a good result for the time prediction of the short term electric load. In addition we implement the graphic user interface for the proposed algorithms.

농가경영성과에 따른 농업인 교육 분야별 필요도에 대한 분석

이순석,장우환 한국농업교육학회 2011 농업교육과 인적자원개발 Vol.43 No.4

이 연구는 농업경쟁력 제고의 방안으로 수행되고 있는 농업인 교육의 효과를 구명하고, 농가경영성과별로 농업인 교육 분야별 필요도의 차이를 분석하고자 하였다. 또한 농가경영성과별로 필요한 교육 분야를 제시하고자 하였다. 구체적 목적달성을 위한 분석 방법은 대응표본 t-검정, 일원분산분석 및 대응일치분석이며, 주요 연구 결과는 다음과 같다. 첫째, 농업교육과정에 대한 농가들의 교육 참여 이후 만족도 점수가 참여 이전 기대 점수보다 더 높아 농업인 교육 사업이 효과가 있는 것으로 분석되었다. 둘째, 농업인의 교육 필요도를 농가경영성과의 주요 지표인 소득과 부채를 기준으로 구분해본 결과, 경영능력배양과 농외소득증대 교육 필요도에서 공통적인 차별성이 존재하였다. 셋째, 대응일치분석을 통해 지각도를 그려본 결과, 농가 소득수준과 부채수준에 따라서 교육 분야에 대한 필요도가 다르게 나타났다. 이러한 분석 결과는 교육과정을 개발함에 있어서 농가들의 소득수준과 부채수준도 사전에 충분히 고려할 필요가 있다는 것을 제시해주고 있다. 앞으로 농업인 교육은 농가경영성과에 따른 수요자 맞춤형 교육과정을 통해 농업지식․기술 및 경영 능력에 대한 질적 변화를 기대할 수 있고, 더 나아가서 농업 전반의 경쟁력 제고에 긍정적인 영향을 미칠 것으로 판단된다. This study is to clear up the effect of farmer education for upgrade in the competitiveness of agriculture and to analyze the differences of necessity in farmer education sector by farm management result. Additionally, it proposes farmer education sector that farmers need by farm management result. Analysis methods used for this study are paired t-test, one-way ANOVA test and correspondence analysis. Major results are as follows. First, it shows that the effect of farmer education was over the expectation because satisfaction score was higher when farmer finished farmer education course compared to expectation score before participation in farmer education course. Second, there are common differences in necessity of farmer education course for the enhancement of management ability and the increase of nonfarm income in results that necessity of farmer education course was analyzed by income and debt level. Third, according to perceptual map through correspondence analysis, there are differences in necessity of farmer education course by income and debt level. It suggests that income and debt level have to be considered deeply in developing farm education course in advance. From now on, Farmer education course can make a qualitative change on the agricultural knowledge, techniques and management abilities by customized education course, effect positively on strengthening the competitiveness of agriculture by extension.

수용성 키틴이 백서 창상치유에 미치는 영향

강장석,조용남,정상훈,유 결,임진수,권 호,조용우,고석원 大韓成形外科學會 2001 Archives of Plastic Surgery Vol.28 No.1

퍼지시스템과 진화알고리즘 기반 지역부하예측 시스템개발

張右晳,指眩旻,姜渙一 명지대학교 산업기술연구소 2006 産業技術硏究所論文集 Vol.25 No.-

This paper proposes a time series prediction method for the nonlinear system using the fuzzy system and the evolutionay strategy and the genetic algorithm. At first, we obtain the optimal fuzzy membership function using the evolutionary strategy or genetic algorithm. With the optimal fuzzy rules and its input differences, a better time prediction series system may be obtained. We obtain a good result for the time prediction of the regional electric load. In addition we implement the graphic user interface for the proposed algorithms.

Prevotella nigrescens의 용혈특성에 관한 연구

곽주석,장훈상,장석우,이수종,유용욱,민경산 大韓齒科保存學會 2005 Restorative Dentistry & Endodontics Vol.30 No.4

세균의 용혈활성은 세균이 숙주 내에서 생존하기 위해 필요한 철을 획득하기위한 특성이며 기능면에서 볼 때 숙주에 대한 중요한 독력인자로 간주될 수 있다. 본 연구에서는 괴사치수 및 치근단 치주염으로 진단된 환자의 근관에서 분리한 Prevotella nigrescens의 용혈활성을 다양한 조건 하에서 측정하여 그 특성을 규명하는 것을 목적으로 한다. 1. 임상에서 분리한 P. nigrescers와 표준균주인 P. nigrescers ATCC 33563에서 모두 용혈활성이 나타났다. 2. 사람, 면양 및 말 세 가지 종에 대해 용혈활성을 비교한 결과 사람의 적혈구에서 가장 강한 용혈활성을 나타내었다. 3. 용혈소 억제제인 NaN₃와 dithiothreitol (DTT)는 농도의존적으로 P.nigrescers의 용혈활성을 감소시켰다 (p<0.05). 4. P. nigrescers가 최대 용혈활성을 나타내는 최적의 pH는 4이었으며, 50℃이하의 온도에서는 용혈활성을 보였으나 95℃에서 급격히 감소하였다. 5.배양조건에 따른 P. nigrescens의 용혈활성을비교한 결과 10% CO₂배양기에 배양한 경우혐기성 조건에서 배양한 것보다 더 높은 용혈활성을 보였다. Hemolytic property is a specific feature of bacteria to obtain iron which is essential for its survival in host tissues. Therefore, it is thought to be one of several factors of virulence. The purpose of this study was to investigate the hemolytic properties of Prevotella nigrescens isolated from the teeth diagnosed as pulp necrosis and apical periodontitis under the presence of hemolysin inhibitors such as NaN3 and dithiothreitol, heat, various pH and cultural conditions. The results were as follows; 1. Clinically isolated P. nigrescens strains and standard P. nigrscens ATCC 33563 showed hemolytic activity. 2. P. nigrescens showed higher hemolytic activity against human erythrocytes than sheep or horse erythrocytes. 3. NaN₃ and dithiothreitol (DTT) reduced the hemolytic activity of P. nigrescens in a dose dependent manner (p<0.05). 4. Optimal pH for the maximum hemolytic activity of P. nigrescens was 4.0 and the hemolysin was stable under the 50℃, but the hemolytic activity was significantly decreased at 95℃. 5. P. nigrescens cultured in 10% CO₂ condition showed higher hemolytic activity than the bacteria cultured in the anaerobic condition.[J Kor Acad Cons Dent 30(4):335-343,2005]

경피흡수제제의 약동학적 분석 : Ketoprofen 첩포제의 예

장인진,임동석,이우영,신상구 大韓臨床藥理學會 1994 臨床藥理學會誌 Vol.2 No.2

QUEST를 이용한 반도체 프로세스 시간 연구

반창우,홍석기,장동영 한국공작기계학회 2008 한국공작기계학회 추계학술대회논문집 Vol.2008 No.-

반도체, LCD, 휴대폰과 같이 제품 원가에 비해 고부가가치 제품 산업들은 급속한 발전과 새로운 서비스 요구로 인해 제품의 생산에 있어서 제조 스피드가 관건이다. 본 연구에서는 복잡하고 다양한 반도체 프로세스 중에서 Track - Aligner - Oxide Etcher - Asher - Sputter - Microscope 프로세스의 모델링을 통하여 평균 생산 시간과 처리량을 측정하여 처리량을 극대화 할 수 있는 생산 시간의 최적화에 대해 고찰하였다.

NK/T 세포 림프종 환자에서 시행된 비골수제거성 조혈모세포이식

정준원,김진석,장준호,서형찬,이승태,김현옥,양우익,민유홍,한지숙,고윤웅 대한조혈모세포이식학회 2001 대한조혈모세포이식학회지 Vol.6 No.2

저자 등은 맹장, 충수돌기 및 흉막을 침범한 고위험군 NK/T 세포 림프종 환자에서 비골수제거 조혈모세포이식을 시행한 후 이식연관 합병증 없이 무병생존하였기에 보고하는 바이다. NK/T cell lymphoma is a rare type of non-Hodgkin"s lymphomas. It has the histological features of angiocentric lymphoma characterized by prominent angio-invasion by tumor cells, and commonly presents in nasal and paranasal structures. Non-nasal form of NK/T cell lymphoma involves skin, gastrointestinal tract, or liver. With conventional chemotherapy and/or radiotherapy, NK/T cell lymphoma shows poor response rate and seldom results in long term survival. Especially, non-nasal form has more aggressive clinical manifestations and grave outcome than nasal form. We report a case of NK/T cell lymphoma presenting with small bowel perforation and malignant pleural effusion due to lymphoma infiltration, transplanted with allogeneic peripheral blood stem cells from HLA identical sibling donor after fludarabine-based nonmyeloablative chemotherapy. After transplantation, the patient achieved an enduring tri-lineage hematological complete response without any evidence of relapse for 10 months.

3D 온라인 슈팅 게임 개발 : "3D 포트리스"

金敬植,崔勝寬,寓昔珍,申一卿,朴勝浩,李東熙,李東建,張孝善 호서대학교 공업기술연구소 2000 工業技術硏究所論文集 Vol.19 No.-

In this paper, features and efficiencies of the 3D engine are described which has been developed through the research of 3D real time rendering techniques. And an on-line shooting game "3D Fortress" which has been developed using this 3D engine with server technologies is introduced for the techniques and methodology applied in the process of development of the game as well as the features and discussions of its implementation.

도암호의 수질과 어류군집 특성 연구

이상하,최재석,이광열,장영수,임인수,허우명,김재구,김범철 강원대학교 부속 환경연구소 2005 Journal of the Environment Vol.2 No.-

To investigate nutrient dynamics of the lake and fish community, both water and fish samples were collected at three different areas (dam site, upper inflowing and downstream of lake outfow) for one year from Sep.2004 to Aug.2005 During the experimental periods, mean concentration of chl, a in epilimnetic layer (0-5m) was 18.5mg^(-3) and transparency ranged from 0.3m to 2.4m, respectively. In nutrient, mean concentrations of TP and TN were 111 mgP m^(-3) and 4.4 mgN L^(-1), respectively. Based on the water quality standard suggested by U.S.EPA(*1976), the trophic state of Lake Doam was classified as eutrophic state. Total number of fish collected in Lake Doam was 9,600 indiveduals in 26 species of 6 family. Sixteen of Korean endemic soecies including H. mylodon, A. signifer, P. tenuicorpa occurred. O. mykiss as introduced fish was also found in Lake Doam. Dominant and subdominant species were P. herzi and Z. platypus that took about 34.6% and 22.5% of total fish composition, respectively. Six species including A. signifer. P. tenuicorpa. and R. kumgangensis were rare in Lake Doam. Pelagic typw of figh commonly occurred at upper regions, whereas benthic type was mainly domenated at downstream area. Therefore, pollution source inflowed from the upper regions did not seriously affect downstream area (Songcheon water system) due to the role of dam as pollutant barrier. In addition high appearance of Comat type of fish that si hybrid between gold fish (C.auratus) and C. auratus was found in the lake, It was unclear the reasons that high prorortion of mutant species apperared in the lake. Further more researches are required in this area.