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

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.

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.

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(寫)한 도서관기준(圖書館基準) 설정(設定)에 관(關)한 연구(硏究)(II)

김창근,Kim, Chang-Keun 한국정보관리학회 1987 정보관리학회지 Vol.4 No.2

국가발전의 원동력으로서의 과학기술발전을 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 factores involved in improving the environments of institutional libraries for gifted students ; finally, this thesis proposes the minimum and optimum standards for library facilites, personnel, collections, and budgets.

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.

산란중 Testosterone Propionate 처리가 계배자와 병아리의 발육 , 생식기 및 갑상선발달에 미치는 영향

김창근,이용빈 ( Chang Keun Kim,Yong Bin Lee ) 한국축산학회 1978 한국축산학회지 Vol.20 No.1

These experiments were conducted to study the effects of testosterone propionate (TP) treatment during incubation on the embryonic (Experiment 1) and postnatal (Experiment 2) development of body, genital organs and thyroid gland in chicken. In the experiment L, RIR embryos treated with TP at the 2nd or 10th day of incubation were observed at 10, 14 and 18-day stage. In the experiment 2, RIR(♂) × Columbian Plymouth Rock(♀) chicks hatched from TP-treated eggs at the 10th day of incubation were observed at monthly intervals from 1 to 5 months of age. The results obtained in the experiment 1 and 2 are summarized as follows: Experiment 1. 1. The weight of embryo after TP treatment was found to be distinctly different between the control and TP-treated group at the 2nd day treatment than at the 10th day treatment of incubation ana the reduction of embryo weight was greater at the higher levels of TP. Especially, this reduction of male embryo weight was somewhat larger than that of female throughout all stages of incubation and the weight of 18-day embryo was significantly smaller in all TP-treated groups than in the control group. The length of using and leg of male and female embryo was considerably shorter at the latter half period of incubation in the TP-treated groups and the development of these parts were more retarded at the 2nd day treatment of TP. 2. The embryonic mortality from the day of TP treatment to 18-day stage was exceptionally higher in the 2nd day treatment than in the 10th day treatment, the percentage of which was 52.3∼60.5% for the 2nd day treatment with 1∼2㎎ TP and 30.7∼40.2% the 10th day treatment with 3∼4㎎ TP. More than 60% of dead embryos appeared to be dead within a few days after TP treatment. 3. The reduction of testis size of embryo related to TP treatment was more remarkable at 14-day stage than at 18-day stage and in the testis size at 18-day stage, no significant difference was observed between the control and TP-treated group, except for the higher levels of TP. When the embryos were treated with the high levels of TP the volumetric proportion of seminiferous tubules in 14 and 18-day embryo testes was. smaller than those of control group, while the diameter of tubules in the TP-treated groups was only smaller at 18-day embryo. 4. The size of left ovary in the TP-treated embryo was smaller in the 2nd day treatment than in the 10th day treatment. The ovary size at 14 and 18-day stage was smaller in all TP-treated groups than in the control group and the ovary size of 18-day embryo treated at the 2nd day of incubation was not especially increased compared with that of 14-day embryo. In the 2nd day treatment the cortex thickness cf left ovary of 14 and 18-day embryo was thinner in the higher levels than in the lower levels and was inactive in the division of germ cells and in the development of secondary sex cords in the cortex. 5. The length of left oviduct in the 14 and 18-day embryo was shorter only in the groups treated with higher levels of TP. However, the reduction of length of right oviduct was similar to those of control throughout the stages of embryo, although the length of oviduct was more reduced in 2㎎ TP-treated group at the 2nd day treatment. The regression of right oviduct was not affected by TP treatment. 6. The thyroid weight of 18-day embryo was not different between sexes and the reduction of thyroid w eight was greater at high levels of TP treatment. The follicle size of embryo thyroid was smaller in the TP-treated groups than in the control group at the 2nd and 10th day treatment and the epithelial cell height of embryo thyroid was not found to be distinctly affected by the time or level of TP treatment. The size of bursa of Fabricius in 18-day embryo was significantly smaller in all TP-treated groups than in the control group. The regression of bursa was larger in the 2nd day treatment and in male embryo and showed difference among TP treated groups in both sexes.

연구논문 - 펄프 , 제지 , 피혁분과 : 안료 입자 크기가 도공층의 공극구조 및 도공지의 인쇄적성에 미치는 영향

김창근,김형주,안국헌,이용규 ( Chang Keun Kim,Hyung Joo Kim,Kuck Heon An,Young Kyu Lee ) 한국공업화학회 1997 한국공업화학회 연구논문 초록집 Vol.1994 No.1

RVM을 이용한 음성인식기의 구현

김창근,고시영,허강인,이광석,Kim, Chang-Keun,Koh, Si-Young,Hur, Kang-In,Lee, Kwang-Seok 한국정보통신학회 2007 한국정보통신학회논문지 Vol.11 No.8

본 논문에서는 음성인식 시스템을 구현함에 있어 중요한 특징 파라미터와 학습, 인식 알고리즘의 선택을 위한 제안을 하기 위하여 각각 세 가지의 방법을 조합하여 인식 실험을 수행하고 검토하였다. 두 종류의 실험을 통하여 하드웨어 장치로 구현할 경우 보다 효과적인 음성 인식 시스템을 제안한다. 첫 번째로는 특징 파라미터의 성능을 평가하기 위하여 기존의 MFCC와 MFCC를 PCA와 ICA를 이용하여 특징 공간을 변화시킨 새로운 특징 파라미터를 제안하여 총 3종류의 특징파라미터에 대한 인식 실험을 수행하였으며, 두 번째로는 학습데이터 수에 따른 HMM, SVM, RVM의 인식 성능을 실험하였다. 이상의 실험에 의하여 ICA에 의한 특징 파라미터가 특징 공간상에서의 높은 선형 분별성에 의해 MFCC와 비교하여 평균 1.5%의 성능향상을 확인할 수 있었으며 학습데이터의 감소에 따른 인식실험에서는 HMM과 비교하여 RVM에서 최고 3.25%의 성능향상을 확인하였다. 이에 근거하여 TI사의 DSP(TMS320C32)를 사용하여 음성 인식기를 구현하여 실시간으로 실험하여 시뮬레이션과 비교하였다. 이와 같은 결과로서 본 논문에서 제안하는 음성인식시스템을 위한 효과적인 방법은 ICA를 이용한 특징 파라미터를 추출하고 RVM을 이용하여 인식을 수행하는 것이라 판단한다. In this paper, we experimented by three kind of method for feature parameter, training method and recognition algorithm of most suitable for speech recognition system and considered. We decided speech recognition system of most suitable through two kind of experiment after we make speech recognizer. First, we did an experiment about three kind of feature parameter to evaluate recognition performance of it in speech recognizer using existent MFCC and MFCC new feature parameter that change characteristic space using PCA and ICA. Second, we experimented recognition performance or HMM, SVM and RVM by studying data number. By an experiment until now, feature parameter by ICA showed performance improvement of average 1.5% than MFCC by high linear discrimination from characteristic space. RVM showed performance improvement of maximum 3.25% than HMM in an experiment by decrease of studying data. As such result, effective method for speech recognition system to propose in this paper derives feature parameters using ICA and un recognition using RVM.

CD-ROM을 이용(利用)한 서지정보(書誌情報) 데이터베이스의 신뢰성향상(信賴性向上) 기법연구(技法硏究) - 다운로드와 업로드를 중심(中心)으로 -

김창근,신용주,Kim, Chang-Keun,Shin, Yong-Ju 한국과학기술정보연구원 과학기술정보센터 1989 Journal of Information Science Theory and Practice Vol.20 No.2

본연구(本硏究)는 레이저기술(技術)과 정보공학(情報工學)의 눈부신 발전과정(發展過程)에서 등장한 대용량 정보축적매체(情報蓄積媒體)인 CD-ROM Catalog Production Product 중에서 BiblioFile을 선택하고, CD-ROM BiblioFile과 과학기술대학도서관(料學技術大學圖書館)에서 자체 개발(開發)한 시스템인 KITLAS를 시스템구성(構成), 파일구조(構造), 특성(特性) 및 기능면(機能面)에서 비교분석(比較分析)한 후 CD-ROM에 수록(收錄)된 MARC 레코드의 변환(變換)과 온라인 대량, 동시 전송(傳送)하는 과정(過程)인 이른바 다운로드(download)와 업로드(up-load)하는 과정(過程)을 구현하여 서지정보(書誌情報) 데이터베이스의 신뢰성(信賴性) 향상(向上) 방법(方法)을 모색하였다. With regard to system configuration, file structure and function, this study has compared and analyzed KITLAS developed by KIT Library and CD-ROM BiblioFile, which is selected among CD-ROM Catalog Production Products, the mass storage media, produced by the fast-growing laser technology and information technology. Furthurmore, this study illuminates how to improve the reliability of bibliographic database, implementing downloading and uploading processes which make possible the conversion and online, mass transmission of CD-ROM MARC records at once.