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과학기술 정보체제의 계획을 위한 기초연구 -정보의 특징, 정보의 이용 및 유통체제의 개선-
구자영,Koo Ja-Young 한국문헌정보학회 1973 한국문헌정보학회지 Vol.3 No.-
This paper is intended as a basic study in which the purpose is to provide understanding of the workings of man in relation to his information resources. Such understanding would prove of value in formulating the policies of an inoformation center serving the fields of science and technology. The information problem of the scientific community was assessed in the lights of the characteristics of the information (cumulativeness, currency versus obsolescence, volume versus redundancy, interrelationships, and foreign literature)and the flow of information and communication patterns covering the use of the variety of media and the information gathering habits of scientists. What can be done to ease the problem was sought in the improvements and innovations which call the attentions of the scientists and the technologists as producers and users of the information, of the professional organizations of various disciplines and of government.
구자영,Koo Ja Young 한국문헌정보학회 1979 한국문헌정보학회지 Vol.6 No.-
The paper is aimed as 'food for thought' concerning the infortance and training of the subject specialist librarians(=SSL) in Korea. Definetions and qualifications as well as the responsibilities and activities of SSL were examined. Opportunities and means for the training of SSL were sought within the framework of the present curriculum of the library science departments and the present system of higher education in korea, and through the efforts of continuing education.
구자영,Koo Ja Young 한국문헌정보학회 1971 한국문헌정보학회지 Vol.2 No.-
The paper is aiming at a critical review of some important aspects of library cooperation in cataloging. It examines the developments of cooperation in cataloging in brief, attempts a detailed account of centralized and cooperative cataloging by bringing out the strengths and weaknesses of each, and reviews important cooperative projects in cataloging as they have been carried out on regional, national and international levels. Examination is made of such cooperative ventures as technical service centers, a variety of Library of Congress programs designed to ease the burden of cataloging for libraries, and the shared cataloging part of the National Program for Acquisition and Cataloging.
APEX 모델의 국내 적용을 위한 데이터베이스 구축 및 고랭지 밭에 대한 적용성 평가
구자영,김종건,최순군,김민경,정재학,임경재,Koo, Ja-Young,Kim, Jonggun,Choi, Soon-Kun,Kim, Min-Kyeong,Jeong, Jaehak,Lim, Kyoung Jae 한국농공학회 2017 한국농공학회논문집 Vol.59 No.6
The Agricultural Policy/Environmental eXtender (APEX) model was developed to extend EPIC's capabilities of simulating land management impacts for small-medium watershed and heterogeneous farms. APEX is a flexible and dynamic tool that is capable of simulating a wide array of management practices, cropping systems, and other land uses across a broad range of agricultural landscapes. APEX have its own agricultural environmental database including operation schedule, soil property, and weather data etc., by crops. However, agriculture environmental informations the APEX model has is all based on U.S. As this can cause malfunction or improper simulation while simulating highland field. In this study, database for APEX model to be utilized for South Korea established with 44,814 agriculture fields in Pyeongchang-gun, Korea from 2007 to 2016. And assessed domestic applicability by comparing T-P unit load criteria presented by National Institution of Environmental Research and result of APEX model. As a result of APEX model simulation, average T-P value for decade was 6.18. Average T-P of every year except 2011 was in range of 5.37~10.43 and this is being involved into criteria presented by National Institution of Environmental Research. It is analyzed that adjusting slope factor can make the model applicable for domestic agricultural environment.
원발성 간세포암의 발생원인에 대한 임상적 연구 - 2 . 간경변증 및 간세포암 환자들에서의 혈청 Selenium 치에 대한 비교 관찰 -
구자영(Ja Young Koo),박병채(Byung Chae Park),한병훈(Byung Hoon Han),이상욱(Sang Ook Lee),서승연(Sung Yun Suh),정인철(In Chul Chung),조무연(Moo Yun Cho) 대한소화기학회 1989 대한소화기학회지 Vol.21 No.4
N/A Whether or not serum selenium concentrations were changed was evaluated in patients with liver cirrhosis and hepatocellular carcinoma. Serum selenium levels among the patients with liver cirrhosis (10.08±1.99 ug/dl) and hepatocellular carcinoma (9.76±1.51 ug/dl) were significantly lower (p<0.05, p<0.005) as compared to the controls (11.49±1.77 pg/dl). These data suggest that a low serum selenium concnetrations observed in patients with liver cirrhosis may be one of risk factors in the development of hepatocellular carcinoma.
그래프이론적 알고리즘들을 이용한 2차원 지형도로부터 DEM의 자동생성방법
구자영 ( Ja Young Koo ) 大韓遠隔探査學會 1993 大韓遠隔探査學會誌 Vol.9 No.2
디지탈화된 지형 정보는 조망분석, 토목계획이나 설계, 또는 지리정보시스템등 여러 분야에 필요한 요소가 된다. 또한 컴퓨터에 적절한 형식으로 입력된 지형정보는 모의 비행훈련이나 무인비행장치에서도 사용될 수 있다. 지형정보는 지도위에 등고선을 비롯한 여려가지 기호들로 표시되어 있어서 훈련된 요원에 의해 분석된다. 자동분석을 위해서는 컴퓨터에 입력되어야 하는데 디지타이징 타블렛과 같은 장비를 사용하여 수동으로 입력하는 것은 많은 시간과 인력을 필요로 한다. 본 논문에서는 이차원 지형도로부터 삼차원 지형정보를 자동으로 추출하는 방법을 다루고 있다. 등고선 조각 추출 및 등고선조각연결 알고리즘을 포함하는 몇 가지 알고리즘들이 제안되었고 실제 지형도를 사용하여 실험되었다. Digitalized topographic information is necessary for many areas such as landscape analysis, civil engineering planning and design, and geographic information systems. It can also be used in flight simulator and automatic navigation of unmanned plane if it is stored in computer in relevant format. Topographic information is coded with various symbols including contour lines, and is analyzed by trained personnels. The information should be stored in computer for automatic analysis, but it requires a lot of time and manpower to enter the contours using manual input devices such as digitizing tablet. This paper deals with automatic extraction and reconstruction of 3D topographic information from 2D terrain map. Several algorithms were developed in this work including contour segment finding algorithm and contour segment linking algorithm. The algorithms were tested using real 2D terrain map.
구자영(Ja Young Koo),박병채(Byung Chae Park),이재준(Jae Joon Lee) 대한소화기학회 1986 대한소화기학회지 Vol.18 No.2
Clinical observations of the 139 patients of esophageal cancer were done. The results were summarized as follows; 1) Most patients were in sixties, mean age being 59.7 years. The ratio between male and female was 10.6:1, 2) Approximately 60% of esophageal cancer was located in middle 1/3, 25% in lower 1/3, 11% in upper esophagus. 3) Of the 76 cases with stage grouping, 68.4% of all cases was stage III in contrast to stage I of which incidence was 7.9% of all. 4) Mean length of involvement was 6.3 cm. Lengths longer than 5 cm was 56.2% of all cases. 5) Length of esophagus involved by the neoplasm did not correlate with degree of progression of disease. 6) Squamous cell carcinoma was observed in 89.2%, while adenocarcinoma was 7.2%. Incidence of adenocarcinoma in female was higher than in male. Age difference according to histologic types was not observed. Squamous cell carcinoma in female occurred frequently in upper 1/3 of esophagus, while in middle 1/3 of esophagus in male. 7) Mean duration of illness was 3.3 months, with presenting symptoms of dysphagia (88.5%), weight loss (13.7%), substernal pain (9.4%), epigastric pain (5.8%) and hematemesis (0.7%).
간장및 담도 : 복수를 동반한 간경변증 환자에서 혈청 Albumin 및 Aldosterone치의 변화와 Atrial Natriuretic Factor의 대응에 관한 연구
구자영(Ja Young Koo),박병채(Byung Chae Park),서승연(Sung Yeon Suh),한병훈(Byung Hoon Han),이상욱(Sang Wook Lee),서보원(Bo Won Suh),최경희(Kung Hee Choi),남철우(chul Woo Nam) 대한소화기학회 1990 대한소화기학회지 Vol.22 No.2
N/A In order to evaluate the role in 24hr urinary sodium retension of serum albumin, aldosterone and ANF concentration in patients with decompensated liver cirrhosis, we measured the levels of serum albumine, aldosterone, ANF and 24hr urinary sodium excretion in patients with compensated liver cirrhosis (Group I,n=15), decompensated liver cirrhosis (Group II, n=15) and normal control person (Group III, n=13). The results are as follows; 1) Albumin, aldosterone, 24hr urinary sodium output show no defference between group I & III, but albumin and 24 hr urinary sodium output was significanctly decreased (p<0.005), aldosterone was significantly increased (p<0.005) in group II. 2) ANF was 38.0 +- 17.9 fmol/ml in group I, 50.2 +- 33.9 fmol/ml in group II, 23.4 +- 20.3 fmol/ml in group III, showed significant difference between group II and III (p<0.025). 3) Albumine shows positive correlationship with 24 hr urinary sodium output (r=0.642, p<0.005), negative correlationship with ANF (r= -0.346, p<0.025) and aldosterone (r=-0.529, p<0.005). These findings indicate that decreased albumine concentration has a strong relationship with sodium retention and ascites development. ANF begins to increase to compensate the sodium retension at early liver cirrhosis, but not enough at the late stage of liver cirrhosis so brings the ascites, and aldosterone increament is only but a secondary phenomenon to ascites.