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장학상(Haksang Jang),김재우(Jae-Woo Kim),권기항(Kee-hang Kwon) 한국정보과학회 2004 한국정보과학회 학술발표논문집 Vol.31 No.1B
본 논문은 멀티패러다임 프로그래밍을 이용한 효과적인 문제 해결 방식을 보이고 멀티패러다임 사고를 적용한 소프트웨어 설계의 실용적 타당성을 예시하기 위하여 3D 모델링 분야를 위한 멀티패러다임 DSEL을 설계한다. 먼저 3D 모델링 응용에 필요한 프로그래밍 요소를 문제의 특성을 고려하여 패러다임 영역별로 분할하고, 이에 따라 분할된 요소를 대응하는 단일 패러다임을 이용해 설계한다. 마지막으로 단일한 패러다임을 이용해 설계된 각 기능을 통합하고 보완하여 멀티패러다임의 협력 효과를 극대화한다.
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장학상(Haksang Jang),권기항(Keehang Kwon) 한국정보과학회 2004 한국정보과학회 학술발표논문집 Vol.31 No.2Ⅰ
순수 함수형 프로그래밍 언어 Haskell에서의 데이터 추상은 대수 데이터 형과 관련 함수로 묶어진 모듈의 인터페이스만을 노출함으로써 이루어진다. 이러한 데이터 추상에 대한 제한된 용법은 프로그램 설계에 있어 유용하게 사용되는 패턴 매칭을 제약하고, 파일 단위의 추상을 요구함으로써 데이터 구조 단위의 데이터 추상을 불가능하게 한다. 본 논문은 Haskell 의 제한된 데이터 추상 문제를 해결하기 위한 방법으로 패키지 데이터 형을 제안한다. 패키지 데이터 형은 더 작은 단위로 데이터 추상을 가능하게 하고, 패턴 매칭을 제약하지 않고 자유롭게 사용할 수 있게 한다.
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Hematology and Serum Chemistry Values of Growing Miniature Pigs
Joohyun Jung(정주현),Jinhwa Chang(장진화),Haksang Kim(김학상),Junghee Yoon(윤정희),Mincheol Choi(최민철) 한국생명과학회 2008 생명과학회지 Vol.18 No.8
본 실험의 목표는 미니돼지에서 성성숙 전까지의 성장단계에서 혈액성분을 조사하는 것이다. 12마리 돼지를 이용하여 정맥에서 채혈하였다. 전혈과 혈청을 사용하여 혈액 및 혈액 화학치를 분석하였다. 그리고 성장단계별의 조사에서 각 성분은 평균과 표준편차로 나타내었다. 혈액분석에서 적혈구와 적혈구용적 그리고 혈소판에서 유의치 있는 변화가 있었다. 특히 적혈구와 적혈구용적은 4주령 군에서 가장 낮은 수치를, 반면에 혈소판은 4주령에서 가장 높은 수치를 보였다. 혈액 화학치에서는 glucose, GGT에서 유의치 있는 변화가 있었으며, 나머지 성분에서는 유의치 있는 변화가 없었다. 이러한 기본적인 혈액 및 혈액 화학치는 미니돼지의 정상 혈액학 연구와 그리고 성장단계별 이른 시기에 정상돼지를 판별하는데 유용하리라 생각된다. The purpose of this study was to establish blood reference values for miniature pigs from various growth ages before pre-puberty. 12 miniature pigs from two swine farms were sampled by jugular venipuncture. Routine hematological and biochemical determinations were performed using whole blood and serum. For the variables examined in each age group the means and the standard deviations were calculated. In hematological values, there are significant changes (p<0.05) in RBC, hematocrit and platelet values in each group. In RBC and hematocrit values, 4-week group shows the lowest level, whereas in platelet values, 4-week group shows the highest level. In biochemical values, there are significant chnges (p<0.05) in glucose and GGT in each group, and in other biochemical values there are no significant changes during growing periods. The values presented here may be useful for knowing the normal values for miniature pigs and also screening the normal pigs in the early days of their life and during the developemental stages.
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김학상,최지혜,정주현,장진화,최민철,윤정희,Kim, Haksang,Choi, Jihye,Jung, Joohyun,Chang, Jinhwa,Choi, Mincheol,Yoon, Junghee 대한수의학회 2006 大韓獸醫學會誌 Vol.46 No.4
Discospondylitis is an infection of intervertebral discs, associated end plates, and adjacent vertebral bodies causing destruction and proliferation. A 10-year-old intact female Rhodesian Ridgeback dog was referred to the Veterinary Medical Teaching Hospital, Seoul National University with paraparesis and severe pain at T13-L1 region for one week duration. The treatment with PDS for one week by referring veterinarian showed no clinical improvement. At time of presentation, clinical signs of the patient included depression, vaginal discharge, and fever. In T-L spine radiography, osteolytic change was found between caudal endplate of T13 and cranial endplate of L1. The affected vertebral bodies were shortened and intervertebral disc space was widened. In abdominal radiography, a dilated soft tissue opacity tubular structure was found in mid-caudal abdomen. The abdominal ultrasonography revealed the uterus dilated with echogenic fluid. The CT findings showed concentric lysis of T13-L1 endplates. The dog was diagnosed as diskospondylitis at T13-L1 and pyometra. Urine and blood were cultured, and Staphylococcus (S.) intermedius was identified. The patient had surgical treatment for pyometra but died for septicemia.
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Osteochondrodysplasia in three Scottish Fold cats
최민철,장진화,Joohyun Jung,Sunkyoung Oh,Sungok Lee,Gyeongmin Kim,Haksang Kim,권오경,윤정희 대한수의학회 2007 JOURNAL OF VETERINARY SCIENCE Vol.8 No.3
This report explains typical radiographic features of Scottish Fold osteochondrodysplasia. Three Scottish Fold cats suffering from lameness were referred to the Veterinary Medical Teaching Hospital, Seoul National University, Korea. Based on the breed predisposition, history, clinical signs, physical examination, and radiographic findings, Scottish Fold osteochondrodysplasia was confirmed in three cases. Radiographic changes mainly included exostosis and secondary arthritis around affected joint lesions, and defective conformation in the phalanges and caudal vertebrae. The oral chondroprotective agents such as glucosamine and chondroitin sulfate make the patients alleviate their pain without adverse effects.
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Son, Taewon,Kim, Daesun,Kim, Byunggiu,Koo, Kang,Park, Youngmi,Kim, Jungae,Lim, Haksang Wiley Subscription Services, Inc., A Wiley Company 2007 Journal of applied polymer science Vol.104 No.5
<P>Stoichiometric and nonstoichiometric polyelectrolyte complex (PEC) was prepared with polyethylene glycol-monosuccinate (PEGMS), and chitosan (CS). A series of PEGMS were synthesized by a 1 : 1 mol ratio between PEG and succinic anhydride. Then, the novel PEC was prepared by a various mole reaction of the above synthesized PEGMS and CS. The physicochemical properties of the synthesized PEC was characterized by using elemental analysis, FTIR, <SUP>1</SUP>H, and <SUP>13</SUP>C nuclear magnetic resonance, dissolution behavior, and phase transition phenomenon. Furthermore, some properties of the PEC obtained were analyzed by UV-Visible spectrometry, wide-angle X-ray diffraction, differential scanning calorimeter, scanning electron microscope, and estimated solubility, and cell viability assay, respectively. It was found that the observed FTIR, <SUP>1</SUP>H, and <SUP>13</SUP>C-NMR data was in good agreement with the chemical structure of the prepared PEGMS and PEC. The dissolution behaviors of nonstoichiometric PEC were found to depend on the pH of the solution as well as on the PEGMS/CS composition. The study of MTT assay suggested that the viability of HepG2 human hepatoblastoma cell on PEC were increased significantly in accordance with mole ratio of CS. As the results, the obtained several product is a useful intermediate, which permits further chemical modification for the amino group of CS and may have potential applications in biocompatible or cosmetic systems. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007</P>
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