學習障碍에 관한 최근의 硏究動向

李鍾三 木浦大學校 敎育硏究所 1991 교육연구 Vol.4 No.-

This review dealt with major research trends in learning disability(LD), particularly in the definition of LD, the identification of LD and the multiple characteristics of LD. 1. The two most common definitions of LD were established by U.S.Public Law 94-142 and National Joint Committee on LD. 2. Methods for identifying LD have been controversial issue. The results of this review revealed that the statewide guidelines significantly changed the characteristics of LD learners who were identified. 3. The multidimensional characteristics of LD are summarized as follows: a) Cognitive characteristics-LD learners are capable of sustaining attention on simple tasks, but apparently are overwhelmed as task complexity increases. Their memory skills affect their academic performance in diverse ways. Many LD learners show deficiencies in strategic processing and background knowledge, while some learners experiencing structural deficiencies. They are as proficient as skilled learners on the nonverbal comprehension task and their poor linguistic skills are in part responsible for the gap between IQ and achievement. b) Metacognitive characteristics-LD learners have deficiencies in metamemorial knowledge, in metaattention and in metalinguistic knowledge, when comparing of their cognitive skills with skilled learners. c) LD learners' motivation styles are very diverse and their perceptions about the causes their academic success and failure are also quite diverse. d) Three other important characteristics which influence on LD learners' learning. One is concerned with developmental level of LD, which is thought to influence particularly their adaptive behavior. Another is concerned with time available for information processing. The other include contextual factors. Two important contexts are the school and the home environment.

동조배양에 의한 Chlorella ellipsoidea의 Ribulose 1, 5-Bisphosphate Carboxylase와 Phosphoenolpyruvate Carboxylase활성도에 미치는 IAA와 GA_3의 효과

이진경,이종삼 誠信女子大學校 1990 硏究論文集 Vol.30 No.1

생활사에 따른 Cholrella ellipsoidea의 Ribulose 1,5-bisphosphate carboxylase(RuBPCase)와 Phosphoenolpyruvate carboxylase(PEPCase)의 활성도에 미치는 IAA와 GA_3의 효과를 규명하기 위하여 IAA(10^-5M)와 GA_3(2×10^-8M)를 처리한 M4N배지에서 동조배양하였다. RuB-PCase와 PEPCase활성도는 340nm에서 NADH가 산화되는 비율로 구하였다. 생장율과 세포크기, 세포수등은 IAA처리구와 GA_3처리구가 대조구에 비하여 촉진되었음을 관찰할 수 있었다. 총단백질량도 대조구보다 IAA와 GA_3처리구에서 증가되었으며, 시기별로는 L시기보다 D시기에서 단백질합성이 촉진됨을 볼 수 있었다. RuBPCase의 활성도는 PEPCase의 활성도에 비하여 현저히 높게 나타났으나, PEPCase도 식물호르몬에 매우 민감하게 활성도가 증가되는 경향을 나타내었다. 또한 이들의 활성도는 division기간보다 ripening기간에서 뚜렷한 증가를 관찰할 수 있었다. 이러한 결과는 division기간보다 ripening기간에서 세포내의 대사작용과 광합성과정이 더욱 활발히 수행되는 것으로 추정된다. In order to observe the effects of IAA and GA_3 on the activities of RuBPCase and PEPCase in Chlorella ell??psoidea during the synchronous culture, the cells cultured in media treated with IAA(10^5M) and GA_3(2¡¿10_-8M). The activities of RuBPCase and PEPCase were assayed by measuring the oxidation of NADH to NAD at 340nm, 25¡E. The growth rate of Chlorella cells which was treated with IAA and GA_3 were promoted in comparison with the rate of the control. The content of total protein in the cells was more increased in the ripening phase than the division phase during the developmental stages In the cells. The activities of RuBPCase and PEPCase were more increased in treated with IAA and GA_3 than those of the control. RuBPCase and PEPCase were more increased in D stage than L stage during the synchronous culture. It was shown that photosynthetic activity and metabolism in the cells were more increased in ripening phase than in the division phase during the life cycle.

돼지에 있어 離乳後 形質에 대한 遺傳力의 推定

李成哲,羅鍾三 又石大學校 1991 論文集 Vol.13 No.-

This study was conducted to estimate the heritabilities, and genetic and phenotypic correlations on economically important traits in Swine. The data used in this study were obtained from 5,724 herds of Duroc, Landrace and Yorkshire breed tested on a weight-constant basis a S Swine Breeding Farm at Icheon, Kyunggi Do from August 1985 to August 1990. The traits studied were backfat thickness, average daily gain, age at 90㎏ and 154day weight. The results obtained in this study were as follows: 1. The least-squares overall means of the backfat thickness studied were 1.960㎝, 1.517㎝ and 1.903㎝ for Duroc, Landrace and Yorkshire, respectively. Landrace is superior to the other breed in backfat thickness. The Duroc were 148.4 for age at 90㎏, 0.868 for average daily gain and 95.9㎏ for 154day weight, respectively and was superior to the other breeds. 2. The heritabilities of the backfat thickness by sire variance component were 0.383 for Duroc, 1.071 for Landrace and 0.879 for Yorkshire, respectively. The growth traits in Duroc were 0.352, 0.373 and 0.335 and in Landrace were 0.917, 0.616 and 0.907 and in Yorkshire were 0.314, 0.331 and 0.341 for average daily gain, age at 90㎏ and 154 day weight, respectively. 3. The genetic correlations of backfat thickness with 154 day weight and average daily gain were positive correlation in Duroc and Landrace breed, and in Yorkshire breed were negative correlation. The phenotypic correlations of back-fat thickness with average daily gain are positive correlation, and age at 90㎏ were negative correlation.

Bleomycin이 Mouse 간장의 Alkaline Phosphatase 활성에 미치는 영향

이규식,정호삼,이군자,김종우 한양대학교 의과대학 1987 한양의대 학술지 Vol.7 No.2

Bleomycin hydrochloride isolated from the Streptomyces veticillus has been widely used as an anticancer drug. In exhibits specific antineoplastic activity against squamous epithelial carcinomas of the skin. Bleomycin causes inhibition of DNA and protein synthesis by incorporating bithiazole group of the drug into DNA. The author undertook the present study to investigate the effect of bleomycin on the alkaline phosphatase activity in the mouse liver. The experimental animals were sacrificed at 6, 12, 24, and 48 hours after administration of 150 mg/kg of bleomycin. The activity of lkaline phosphatase was observed by Gomori's method for histochemical study. The results were as follows. The activity of alkaline phosphatase was decreased in the entire hepatic lobule of the 12 hours belomycin treated group and recovered in the 24 hours bleomycin treated group. Consequently, it is suggested that bleomycin has the cytotoxic effect on the hepatocytes.

방사선과 재학생들의 임상실습에 관한 조사 연구

이준일,박종삼 대구보건대학 2000 대구보건대학 論文集 Vol.20 No.-

The following outlines responses based on a study conducted among 210 junior-year medical students who have completed clinical demonstration during the past three years (1997, 1998, 1999.) These students have completed clinical demonstrations in the field of diagnostic radiology, radiotherapy and nuclear medicine at five general hospitals located within the city of Dae Gu, Korea. The responses for efficient implementation of clinical demonstration are as follows: 1. 95% of students responded that clinical demonstration is required. 2. 80.2% of the students responded that clinical demonstration should be carried out during the summer or the winter break. 3. Students agreed that clinical demonstration should begin after completing 2nd semester of sophomore year in school. 4. More students felt the current 10-credit requirement is relatively high. 5. Students felt the importance of including attendance, attitude towards patient care and responsibility as factors in evaluating overall clinical demonstration performance. 6. Students responded that the school should prepare a practical guideline in collaboration with training hospitals to achieve a consistency in instructional methods.

Saccharomyces uvarum의 인지질 생합성 및 지방산 조성에 미치는 탄소원의 효과에 관하여

이종삼,김선혜 성신여자대학교기초과학연구소 1988 基礎科學硏究誌 Vol.5 No.-

Saccharomyces uvarum을 30℃에서 Knopp's 최소배지에 자당결핍과 자당고농도 처리(15%)을 하여 배양시켰다. 이들 세포의 생장과 인지질 및 지방산 조성에 미치는 탄소원의 효과를 조사하기 위하여 배양 기간중 4, 7일 간격으로 일정량의 세포를 수확하여 생장률과 이에 따른 함량을 조사하였다. 자당 고농도 처리구는 배양 4일째에 생장감소 효과를 나타내었으며, 자당결핍구는 배양기간동안 세포생장을 관찰할 수 없었다. 주요 인지질의 지방산 palmitic acid와 oleic acid로 주로 이용되었으며, PC, PE에서는 대조구에 비하여 oleic acid가 조성상 급격한 이용의 증가를 나타내었다. Saccharomyces uvarum was cultured in the Knopp's media of the sucrose absence and the sucrose excess. In order to observe the effect of sucrose as carbon source on biosynthesis of phospholipids in these cells and the compositions of fatty acids, the cells were harvested at 4 and 7 days intervals of cultivations after inoculation. The growth rate at sucrose excess was decreased at 4 days of cultivation, but the growth rate of sucrose absence was not increase during whole period of cultivation. The fatty acids in major phospholipids were composed of palmitic acid and oleic acid. The amount of oleic acid in phosphatidylethanolamine and phosphatidylcholine was markedly increased to compared with those of the control.

肝組織에서의 Glucagon의 Cholesterol合成 抑制機轉에 對한 硏究

李根培,車鐘希,朴悅,高光三 朝鮮大學校 附設 醫學硏究所 1983 The Medical Journal of Chosun University Vol.8 No.1

The inhibitory mechanism of glucagon on hepatic cholesterol biosynthesis in rat was studied by the measurement of incorporation of tritium from ^(3)H₂O into cholesterol, and intermediary metabolite of lipids. But the rate of cholesterol synthesis was not affected. The hepatic acetyl-CoA carboxylase activity and malonyl-CoA concentration were decreased to 25~35% of control value during the same period after glucagon injection. These data indicates that one site of action of glucagon in regulating fat biosynthesis is at the acetyl-CoA carboxylase reaction.

습관성 흡연여성에서 후측 수부에 발생한 Buerger씨병

김삼,이남호,육청미,최영진,백대균,홍경순,두영철,한규록,오동진,유규형,임종윤,이광학,이영 대한순환기학회 2000 Korean Circulation Journal Vol.30 No.7

전치부 반대교합아동의 발음장애에 관한 음향적 연구

박정삼,손동수,이상훈,김진태,한세현,장기택,김종철 大韓小兒齒科學會 1996 大韓小兒齒科學會誌 Vol.23 No.2

It has widely known for speech problem in patients with malocclusion,but there have been insufficient studies on degrees of serverity.Patients with openbite and CIⅢ malocclusion usually have speech problem.It has widly known that fricative /s/ is pronunciated most abnomally in CIⅢ malocclusion than any other consonant.Therefore 20 childen with anterior crossbite selected for control group.7 sounds such as /사(sa),서(sδ),소(so),수(su),스(sω),시(si),세(se)/ were recorded,and the formants and formants ratio were measured by using Sensimetric Speech Station,which is speech analyzing program in IBM pc. The results were as follows: 1.In anterior crossbite group,F1 of all 7 sounds were significantly higher than normal anterior relationship group(P<0.05). 2.There were no significant difference in F2 between two groups except/소(so),수(su)/(P>0.05). 3.In anterior crossbite group,F2/F1 ratio of all 7 sounds were significantly smaller than normal anterior relationship group(P<0.05). 4.There were no significant difference in accordance with tongue position(P>0.05).

Slit 이동장치 제작 및 거리변화법에 의한 감도측정과의 비교 검토

박종삼,박명환,권덕문,이준일 대구보건대학 1995 대구보건대학 論文集 Vol.15 No.-

The slit moving apparatus which determine the advantage of opt-sentive material in sensitometry was produced and was compared to the distance scale method which has low variation in accuracy and in reproduction, and the results showed that the unique value agree. The slit moving apparatus is expect to reduce space which needs widely for sensitometry in distance scale method and improve convince to user.