한국재래산양의 발정과 자양생산에 관한 연구

김창근,정영채 ( Chang Keun Kim,Yung Chai Chung ) 한국축산학회 1979 한국축산학회지 Vol.21 No.2

This study on the reproductive performance of Korean native goats in Gyeongnam and Chungnam area was carried out to clarify the monthly and seasonal distribution in estrus and- doe kidding, the kidding rate, age at 1st pregnancy and kidding interval. 1. About 85% of the total goats showed estrus were mainly observed between May and October during a year and 23.2%, 43.7%, 24.3% and 8.8% of the total goats showed estrus in spring, summer, fall and winter respectively. 2. About 80% of the total doe kidding were occurred between December and May of next year and seldom between August and October. Above 80% of the total doe kidding were occurred in autumn and winter seasons. 3 . The number of kids born at one time in 1 st, 2 nd, 3 rd and over 4 th kidding was 1.52, 2.08, 2.27, and 2.23 respectively and overall mean was 1.87. The number of kids was significantly increased until 3rd kidding, but there was no significant difference between 3rd and over 4 th kidding, and among four seasons in these numbers. 4. The percentage of single, twin, triplet and quadruplet in does was 35.3%, 46.3%, 15.5% and 2.9% respectively and the percentage of multiple births was increased. with advancing kidding, number. 5. The age at 1st pregnancy and kidding interval in does was 8.0±2.7 months-old and 9.5±3.0 months.

Phase Stability of Ternary Blends

김창근,김재진,Jae Jin Kim,D . R . Paul 한국고분자학회 1993 한국고분자학회 학술대회 연구논문 초록집 Vol.1993 No.10

영상처리를 이용한 복합재료 내의 단섬유 배향상태의 측정

김창근,고진,윤재륜 ( Chang Keun Kim,Jin Ko,Jae Ryoun Youn ) 한국복합재료학회 1993 Composites research Vol.6 No.1

2003년판 한국도서관기준의 의의와 특징 - (3)전문도서관

김창근,Kim, Chang-Geun 한국도서관협회 2004 圖協會報 Vol.45 No.2

초대형 원문정보데이타베이스 ADONIS

김창근,Kim, Chang-Geun 한국도서관협회 1993 圖協會報 Vol.34 No.2

웹페이지 관심도 분석에 관한 연구

김창근,정연홍,김일,Kim, Chang-Geun,Jung, Youn-Hong,Kim, Il 한국정보통신학회 2007 한국정보통신학회논문지 Vol.11 No.4

최근 인터넷 쇼핑몰 등을 통한 전자상거래가 증가하면서 웹페이지를 탐색하는 방문자의 관심도를 분석하여 개인화 등에 활용되는 예가 증가하고 있다. 웹사이트 방문자의 관심도 분석 방법으로는 클릭스트림 기반의 분석 방법이 이용되고 있지만, 이러한 기법은 인터넷 쇼핑 몰과 같이 많은 양의 정보를 제공하는 웹페이지의 경우에는 방문자가 어떠한 정보에 관심이 많은지에 대한분석이 어렵다. 웹페이지와 같이 많은 양의 정보를 제공하는 경우에 제한된 크기의 모니터로는 한 화면에 모든 정보를 표현하기가 어렵다. 따라서 웹페이지를 표현하는 웹브라우저는 이러한 표현의 한계를 극복하기 위하여 페이지 스크롤 기능을 제공하고 있다. 본 논문에서는 이러한 문제를 해결하기 위하여 웹브라우저 내에서 스크롤바 위치와 윈도우 커서의 움직임을 주기적으로 수집하여 사용자의 관심도를 분석하는 웹페이지 관심도 분석 시스템을 제안하고 분석 및 설계하였다. There has been increasing of using Internet shopping mall like an e-business, and it means that the analysis technique of appetence for webpase visitors logging into the case of analyzing the degree of concern and using them in the personalization has been absolutely advanced. For heavy web pages, it is impossible to use click-stream based analysis in analyzing interest for each area by what kind of information the visitors are interested in to. A web browser of a limited size has difficulty in expressing on a screen information about what they want, or what hey are looking for. Pagescrolling is used to overcome such a limitation in expression. In this study, a analyzing system of degree of concern for Webpage is presented, designed and implemented using page scrolling to track the position of the scroll bar and movements of the window cursor regularly within a window browser for real-time transfer to analyze user's interest by using information received from the analysis of the visual perception area of the web page.

미경산돈의 발정유기 및 혈중 Progesterone 수준변화에 관한 연구

김창근,정영채,정영호,김형태 ( C . K . Kim,Y . C . Chung,Y . H . Chung,H . T . Kim ) 한국축산학회 1982 한국축산학회지 Vol.24 No.3

These experiments were conducted to investigate the effects of PGF₂α injection on induction of estrus and change in blood progesterone concentration in normal and anestrous gilts. Six anestrous gilts and 5 normal gilts were used. For induction of estrus either 10㎎ PGF₂α or 10㎎ PGF₂α plus 1,000IU PMSG was intramuscularly injected. Serum progesterone concentration were determined by radioimmunoassay. Conception of gilts were confirmed by necropsy examination for ovary and uterus condition within 35 days after mating. The number of gilts which showed standing or dull estrus after either PGF₂α or PGF₂α plus PMSG injection was 5(83.3%) out of 6 long-anestrous gills and 4(80.0%) out of 5 normal gills. The average interval from PGF₂α injection to the induced estrus was 7.2 days (4 to 12 days) in 5 long-anestrous gills and 13.5 days (6 to 25 days) in 4 normal gills. The number of pregnant gills was 2 out of 4 long-anestrous gills and 3 out of 4 normal gills, except each one get in two groups which was necropsied too early to be confirmed whether pregnant or not, although their ovary and uterus were normal condition. Blood progesterone concentration of 11.0 ng/㎖ before PGF₂α injection in 5 longanestrous gills which showed estrus decreased to 3.0 ng/㎖ at 1 day and 1.3 ng/㎖ (11.8% of initial concentration) at 4 days and increased again to 4.3 ng/㎖ at 8 days after PGF₂α injection, respectively and the concentration of 16.5 ng/㎖ before PGF₂α injection in 4 normal gills which showed estrus decreased to 3.2 ng/㎖ at 1 day and 2.3 ng/㎖ (13.9% of initial concentration) at 4 days and increased to 4.7 ng/㎖ after PGF₂α injection, respectively. Blood progesterone concentrations at 10 to 15 days and 30 to 35 days after mating in pregnant gills were 8.2 to 26.4 ng/㎖ and 17.7 to 19.6 ng/㎖ in 2 anestrous gills and 23.1 to 28.5 and 19.6 to 19.9 ng/㎖ in 3 normal gills respectively. The number of corpus luteum in the induced estrous gifts averaged 18.8 in 3 longanestrous gifts and 15.0 in 4 normal gifts. There would appear to be larger number of CL in PGF₂α plus PMSG injection than in only PGF₂α injection.

안료의 배합비가 더블 도공지의 물성 및 인쇄적성에 미치는 영향

김창근,이용규,Kim, Chang-Keun,Lee, Yong-Kyu 강원대학교 산림과학연구소 2001 Journal of Forest Science Vol.18 No.-

The main objective of this study was to investigate effects of pigment mixed with different ratio on the double coated paper. Mineral pigments such as clay and ground calcium carbonate(GCC) as well as hollow sphere plastic pigment were used to evaluate the physical, optical properties and printabilities of double coated paper. The physical properties such as gloss and smoothness, and the printability(ink gloss) of double coated paper were measured to evaluate the effects of the bottom layer on improving the properties of top layer. The data indicated that the usage of hollow sphere plastic pigment for the bottom layer coating improved the surface properties of double coated paper, and that ink gloss was significantly influenced by the structure of bottom layer even when hollow sphere plastic pigment was used for the bottom layer coating.

1996년 초여름에 유행한 Adenovirus폐렴의 검토

김창근,정철영,김정숙,이환종,Kim, Chang Keun,Chung, Churl Young,Kim, Jung Suk,Lee, Hoan Jong 대한소아감염학회 1996 Pediatric Infection and Vaccine Vol.3 No.2

The incidence of Adenovirus(AV) pneumonia in children is estimated at 8%. Long-term complications reported with type 7 include hyperleucent lung syndrome, bronchiolitis obliterans and may require several months to recover. We reviewed 8 case of AV pnemonia confirmed by AV culture and sero-diagnosis among selected 19 AV pneumonia suspicious cases who were admitted to the Sanggye Paik Hospital of Inje University due to clinical pneumonia from May to July 1996. From 19 children, nasal aspirates or trachial aspirates were collected: viral agents were detected by virus isolation and virus antigen was detected by indirect immunofluorescent staining. Serologic diagnosis for type-specific AV antibody was done by neutralisation test. The results are as follows: 1) Age of the patients ranged from 6 months to 47 months with a mean of $24{\pm}9$ months. 6 were male and 2 were female(M:F= 3:1). 2) Monthly distribution showed 4 cases on June, 2 cases on May and July, respectively. 3) The mean duration of admission was 20.4 days and mean duration of fever was 11.3 days 4) Peripheral leukocyte counts were elevated in 4 cases(50%) and findings of shift to left were showed in 4 cases(50%) and serum aminotransferase activities were elevated in 6 case(75%). 5) Radiologic findings include linear and streaky infiltration(1/8 cases), patchy and lobar consolidation (7/8 cases), pleural effusion(2/8 cases) and hyperleucency was seen in 3/8 cases at time of admission and increased to 6/8 cases on hospital discharge. 6) The AV serotypes were type 7, type 3, and type 1. 7) Oxygen supply was done in 4 cases(50%) and all 8 patients include 2 cases of type 7 treated with artificial ventilator were survived. In conclusion, the serotypes of AV pneumonia outbreaks in early summer of 1996 were type 7, 3, 1 and, as showed severe clinical course, continued follow up surveillance is necessary to the long term pulmonary complications.

과학영재교육기관(科學英才敎育機關)을 위(爲)한 도서관기준설정(圖書館基準設定)에 관(關)한 연구(硏究)(I)

김창근,Kim, Chang-Keun 한국정보관리학회 1987 정보관리학회지 Vol.4 No.1

국가발전의 원동력으로서의 과학기술밭전을 위한 국가적 조치로서 영재교육기관을 설립하고, 교육을 통한 과학영재의 발굴, 육성을 시도하고 있는 싯점에서 교육기관의 환경적 요인이 크게 중요시되고 있다. 그 환경요인 중에서도 지식의 보고로서의 도서관 환경조성이야 말로 소기의 목표를 달성하고 그 시기를 더욱 앞당길 수 있는 가장 중요한 요인이라 할 수 있기 때문에, 본 논문에서는 과학영재교육의 중요성을 기술하고 그 교육을 위한 도서관의 환경적 개선요인을 조사, 비교 분석하여 과학영재교육 기관을 위한 도서관 기준을 시설, 인원, 장서, 예산등의 포괄적인 기준에 관한 합리적 타당성을 도출하고 최적 기준을 제시하였다. Many countries make it their national policy to develop science and technology as the primary element in their overall national development, they concentrate on identifying gifted students in those areas and on educating them in special institutions. At this point the environmental factors in those educational institutions are highlighted. Of all these factors, a favorable and amenable environment of a library, the treasure - house of knowledge, is the most essential to the early achievement of the stated educational aims. Thus, this thesis describes the importance of educating gifted students, and then examines, compares and analyzes the factors involved in improving the environments of institutional libraries for gifted students ; finally, this thesis proposes the minimum and optimum standards for library facilities, personnel, collections, and budgets.