자기통제 피드백이 골프 아이언 샷의 수행 및 학습에 미치는 영향

한남익,안정덕 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.6

The purpose of this study was to investigate where a feedback schedule controlled by learner would be a more effective means of delivering feedback than any predetermined feedback schedules. Subjects were randomly assigned to one of three conditions : control condition(n=12), yoked condition(n=12) and experimental condition(n=12). Data obtained from all subjects in four acquisition and two retention trials blocks were analyzed with two separate analyses of variance for each of four error scores. Analysis performed on the acquisition trials were a 3×4(condition ×trial block) analysis of variance (ANOVA) with repeated measures on the second factor. The retention trials were a 3×2(condition ×trial block) analysis of variance (ANOVA) with repeated measures on the second factor. Dependent measures were absolute error, variable error, radial error and directional angle error. Analysis on the experiment indicated a significant main effect for the trial blocks during retention phase. The variable error in the retention phase revealed that the second block performed significantly better consistency than the frist block.

심리적 불응기(PRP)에 대한 이론적 연구

한남익,표내숙,조영제 釜山大學校 師範大學 1995 교사교육연구 Vol.30 No.-

Psychological Refractory Period is the delay in the response to the second of two closely spaced stimuli. This important phenomenon was discovered by Telford(1931), who named it the Psychological Refractory Period. A widely accepted theory to account for the PRP is the Single Channel theory. The Single Channel Theory proposed that subject can attend to only one decision process at a time. Another important result in studies of refractoriness is the effect of the inter-stimulus interval and number of alternatives on delay. PRP which is related with the characteristic feature of reaction capacity at the time of human's information transaction is very important for some human's activity which is requring rapid human response. Whenever training of discountinuous reaction or new information for the correction of reaction is necessary, the effect of PRP appears with a rapid and continuous system. A theoritical study on PRP is one of the themes which can most appropriately the success of feint.

양궁선수와 연식정구선수의 선택반응시간 비교 실험

한남익,표내숙,문규진 釜山大學校 師範大學 1995 교사교육연구 Vol.31 No.-

The aim of this study was to investigate how the simple stimuli-response (1-choice) and the choice stimuli-response (2-choice, 4-choice) make an influence on Reaction Time (RT) of the Athletes. Subjects were 8 Athletes (Archery : 4, Soft tennis : 4). Lab Activities Manual with Software were used as an experimental device. Thirty reaction time trials will be administered. On each trial, four circles will be presented on the computer monitor.The subject task is to depress the appropriate key (DFJK) as quickly as possible when the stimuli is illuminated. The experimental data were analysied by Regression and Paired t-test through SPSS/PC+. The experimental results were as followed. The RT increaces by nearly an equal amount each time the number of alternative is doubled(1 to 2 to 4). The relationship between the choice RT and the Logarithm to the base two of the number of stimulus alternative should be so linear. The RT values of Soft-tennis ball group are shown on the faster on the choice stimuli-response than Archery group(P<.05).

딥러닝에 의한 라이다 반사강도 데이터의 자연칼라 영상화

신영하(Shin, Young Ha),형성웅(Hyung, Sung Woong),이동천(Lee, Dong-Cheon) 한국측량학회 2020 한국측량학회 학술대회자료집 Vol.2020 No.7

본 연구에서는 생성적 적대 신경망(GAN; Generative Adversarial Network)기반의 딥러닝 모델을 이용하여 라이다 반사강도 데이터의 자연칼라 영상화를 수행하였다. 반사강도 데이터는 능동센서인 레이저 스캐너에 의해 근적외선 파장대에서 획득되므로 광학영상과 비교하면 물리적, 광학적, 해상도, 품질, 패턴 등 여러 측면에서 다른 특성을 가지고 있다. 특히 라이다 데이터는 중심투영의 광학영상과 다르게 정사투영에 의해 획득되고, 폐색영역과 그림자 영향이 없으므로, 라이다 반사강도 데이터를 딥러닝에 의해 고품질의 자연칼라로 영상화하면 엄밀정사영상을 효율적이고 획기적으로 생성할 수 있는 방법이라고 판단된다.

고교 레슬링선수들의 체중감량이 섭취열량과 신체조성에 미치는 영향

염원상,-- 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.6

This study was to find out calorie intake and body composition changes in accordance with weight loss of wrestlers. The wrestlers were divided three groups : no weight loss group, 5~7% weight loss group and over 7% weight loss group, And they were ovserved three ; before weight loss, at measuring weight and before games. The following are the conclusion of this study: Before weight loss, the percentage of the daily intake to the daily energy expenditure was 57.5% For the no weight loss group, 172% For the 5%~7% weight loss group and 53.7% For the over 7% weight loss group, The calorie intake of each group per meal: the no weight loss group intake 1.118kcal be Fore weight loss, 750.9kcal before weight measurement and 1026.8kcal From after weight measurement to before games, and the 5~7% weight loss group intake 955.4kcal before weight loss, 483.1kcal before weight measurement and 880.4kcal from after weight measurement to before games, and the over 7% weight intake 959.3kcal before weight loss, 339.1kcal before weight measurement and 872.7kcal from after weight measurement to before games. The ratios of calorie intake(protein ; fat : glucose) : the no weight loss group showed 16,.7~35.1% : 20.8~23.8% : 44.1~60%, the 5~7% weight loss group showed 15.5~26.6% : 22.2~23.7% : 50.6~62.3% and the over 7% weight loss group showed 15.0~30.2% : 19.6~27.6% : 50.7~59.4%. After weight loss, weight and BMI changes in accordance with weight loss among groups slowed meaningful differences in all circumstances : Weight, before games versus at measuring weight and before weight loss versus before games(p≤0.01). In the changes of total body water, protein, mineral, at mass and at in accordance with weight loss among groups, when We compared those of before games with those of at measuring Weight, we Found that the over 7% weight loss group showed a meaningful increase over the no Weight loss group(p≤.05).

mecA 양성 메티실린 내성 포도구균의 mec 조절유전자에 대한 분자역학적 연구 및 다양성 분석

우희연,이남용,맹성호,한승훈,인경수,김상욱,성승용,김익상,최명식 대한화학요법학회 2000 대한화학요법학회지 Vol.18 No.3

목적 : 병원 감염과 지역 감염의 원인균으로서의 중요성이 증가되고 있는 MRSA와 MRCNS의 메티실린 내성 관련 유전자에 대해 분자역학적인 조사를 시행하고 mec 조절유전자의 다양성을 분석하여 분자유전학적 연구와 감염 관리에 기본적 자료를 제공하고자 연구를 시행하였다. 방법 : 본 연구에서는 국내 동일 대학병원에서 분리된 mecA 양성 MRSA 78균주와 MRCNS 36균주를 대상으로 항균제 감수성 검사와 중합효소연쇄반응을 시행하여 표현형과 유전형의 분포를 알아보고 내성 정도와 유전형의 상관성을 분석하였다. 결론 : 최소억제농도를 측정하여 oxacillin 감수성 양상을 알아본 결과 총 90개의 MRSA 임상검체 중 3균주에서 감수성을 보였고, MRCNS 36균주는 모두 내성을 보였으며, 고도 내성을 보이는 균주일수록 다제내성을 보이고 있었다. 중합효소연쇄반응으로 mecA 유전자 유무를 분석하여 mecA 양성을 보인 MRSA 78균주와 MSCNS 36균주 만을 대상으로 mec 조절유전자에 대한 중합효소연쇄반응을 시행하여 유전형의 분포를 조사하였다. 그 결과 MRSA와 MRCNS 모두에서 mecA-Pr-mecA-mecR1-mecI형, mecA-Pr-mecA-mecR1형과 mecA-Pr-mecA-mecR-1의 5′말단형의 3가지 유전형이 공통적으로 관찰되었는데, 이외에 MRSA에서는 mecA-mecR1형, mecA-mecR1의 5′말단형이, MRCNS에서는 mecA-Pr-mecA형과 mecA형이 추가로 분리되었다. 유전형의 분포를 연도별로 분석한 결과 연도별로 우세한 유전형이 서로 다른 것을 알 수 있었다. 유전형과 내성 정도의 상관성을 분석한 결과, mecA-Pr-mecA-mecR1을 보유한 MRSA의 경우 mecA 억제유전자로 생각되는 mecI 유전자 유무에 관계없이 모두 고도 내성을 나타내어 mecI의 유무는 내성 정도와는 일정한 관련이 없었으나, MRSA와 MRCNS 모두에서 mecI와 동시에 mecR1의 3′말단이 결혼된 유전형이 저도 및 중등도 내성을 보이는 균주에서 유의하게 많이 관찰되어 mecI가 결손된 균주에서는 mecR1의 3′말단부위의 유무가 내성 정도의 결정에 중요한 역할을 할 것으로 생각하였다. 결론 : 국내에서 분리되는 메티실린 내성 포도구균의 유전형의 분포가 국외 분리주와 차이를 보이는 것으로 관찰되었다. 또한 기존의 보고와는 달리 메티실린 내성 정도와 유전형 사이에 유의한 연관성이 있는 것으로 관찰되어 mec조절유전자가 내성 발현 뿐만 아니라 내성 정도의 결정에 중요한 역할을 하는 것으로 관찰되었다. MRSA가 중요한 감염균임에도 불구하고 아직까지 MRSA의 내성기전에 대해 확실하게 규명되지 않아 치료가 더욱 어려워지고 있는 실정이므로 이에 대한 더욱 종합적인 연구와 동시에 발생과 확산을 막기 위한 노력이 필요할 것으로 생각된다. Background : High prevalence of methicillin resistance has been noticed in staphylococci which also have been recognized as important nosocomial and multi-drug resistant pathogens. In this study, we investigated the distribution of mec regulator genes and the presence of the mutation in mecIgene to reveal the resistance mechanism at molecular level. Methods : The isolates included 90 clinical isolates of MRSA, 36 MRCNS of which methicillin resistance were determined by disk diffusion test and isolated in a single hospital during 1996-1999. We performed microdilution MIC test for oxacillin resistance and Kirby-Bauer test for other antibiotics. Genotypes of mecA positive (determined by PCR) isolates (78 MRSA, 36 MRCNS) were investigated by PCR amplification of mec regulator genes such as 3' end and 5' end of mecR1. mecI, and Pr-mecA. Results : In MIC assay, all MRSA strains except 3 strains and all MRCNS strains showed oxacillin resistance. The level of resistance correlated to the multi-drug resistance. Seven genotypes were observed in mecA positive MRSA and MRCNS. Differences of predominant genotypes among years isolated and among species were observed. Deletions of the 3' end of mecR1 and the mecI were more frequently observed in the low- and borderline-level resistant MRSA and MRCNS (P(0.05). So the important role of 3' end of mecRI in determining resistance level was suggested. Conclusion : This study demonstrated that genomic distribution of methicillin-resistant staphylococci isolated in Korea was different from that of strains isolated in other countries. And important role of mec regulator genes for expression of methicillin resistance was suggested.

PCNA Expression and Electron Microscopic Study of Acinus - Forming Hepatocytes in Chronic Hepatitis B

(Nam Ik Han),(Young Sok Lee),(Hwang Choi),(Jong Young Choi),(Seung Kyu Yun),(Se Hyun Cho),(Jun Youl Han),(Jin Mo Yang),(Byung Min Ahn),(Sang Wook Choi),(Chang Don Lee),(Sang Bok Cha),(Hee Sik Sun),(Do 대한내과학회 2002 The Korean Journal of Internal Medicine Vol.17 No.2

N/A Background: One of the major morphologic characteristics of hepatitis B is a hepatocellular regeneration which is induced by massive hepatocyte necrosis and associated with proliferative activity of hepatocytes. The purpose of this study is to document the proliferative activity of hepatocytes in various types of hepatitis B by immunohistochemical staining for proliferative cell nuclear antigen-labelling index (PCNA-LI) and electron microscopy. Methods: We studied 83 patients with hepatitis B; 11 cases of acute viral hepatitis, 24 cases of mild chronic hepatitis, 34 cases of severe chronic hepatitis with early cirrhosis and 14 cases of severe chronic hepatitis. The PCNA was tested by immunohistochemical staining using anti-PCNA antibody. Furthermore we evaluated the ultrastructure of acinus-forming hepatocytes (AFH) by electron microscopy. Results : The expression rate and labelling index of PCNA were 27.3% and 5.3±0.9% in acute viral hepatitis, 62.5% and 22.9 ±31.7% in mild chronic hepatits, and then 47.1% and 14.1± 24.2% in severe chronic hepatitis with early cirrhosis, respectively (Figure 1). By contrast, no detectable PCNA expression was noted in AFH. Electron microscopic findings showed that hepatocytes forming a rosette underwent marked degenerative changes with sinusoidal capillarization and increased fine strands of collagen fiber in portal area. Conclusion: The proliferative acitivity of hepatitis B was significantly decreased in severe chronic hepatitis containing AFH. This result suggested that differences in proliferative activity was associated with hepatic cell necrosis and AFH.

Electron Microscopic Study of the Gallbladder and Gallstone Formation Induced by High Cholesterol-Cholic Acid Diet in Mice

Han, Nam-Ik,Choi, Sang-Wook,Chung, Kyu-Won Catholic Medical Center 1992 Bulletin of the Clinical Research Institute Vol.20 No.1

Pattern-Analysis of Panax ginseng Polysaccharide

Han, Yong-Nam,Kim, Sun-Young,Lee, Hee-Joo,Hwang, Woo-Ik,Han, Byung-Hoon The Korean Society of Ginseng 1992 Journal of Ginseng Research Vol.16 No.3

Total polysaccharide contents in Panax ginseng roots were evaluated by a spectrophotometry, utilizing the complex formation of ginseng polysaccharide with alcian blue dye in 50 mM ammonium biphosphate, pH 4.2. The total polysaccharide content in red ginseng was about three times higher than that in fresh ginseng when both were extracted with water, and was increased about two times when red ginseng was extracted with an alkaline solution. The determination of total polysaccharide in various parts of ginseng revealed that main roots contained the component more than fine roots. Fresh ginseng sections stained by the dye showed polysaccharide mainly found in cortex and cambium but not in epidermis. Pattern-analysis on total and acidic polysaccharides from fresh and red ginsengs exhibited that the chemical compositions of the polysaccharides extracted from both ginsengs quite differed from each other.

Ultrastructural Changes of Hepatic Stellate Cells in the Space of Disse in Alcoholic Fatty Liver

(Nam Ik Han),(Kyu Won Chung),(Byung Min Ahn),(Sang Wook Choi),(Young Sok Lee),(Chang Don Lee),(Hee Sik Sun) 대한내과학회 2001 The Korean Journal of Internal Medicine Vol.16 No.3

N/A Background: Hepatic stellate cell (HSC) has been suggested to play a role in fibrogenesis in alcoholic liver disease. We evaluate the correlation with fibrogenesis and ultrastructure of hepatic stellate cells in alcoholic fatty liver. Methods: We studied 6 patients with alcoholic fatty liver and 5 non-alcoholic fatty liver. The numbers off at droplets in hepatic stellate cell was determined by electron microscopy. We also studied the grading of deposition of collagen fibers in the space of Disse. We were to evaluate the structure of hepatic stellate cells in the space of Disse by light and electron microscopy. Results: Wider distribution of fat droplets in hepatic stellate cells in alcoholic fatty liver than in normal liver. The hypertrophied endoplasmic reticulum in hepatic stellate cells is a prominent findings in alcoholic fatty liver. We observed basement membrane-like materials in patients with alcoholic fatty liver with hepatic fibrosis. Conclusion: The results demonstrate that, in patients with alcoholic fatty liver by alcoholic liver injury, the hepatic stellate cells may play an important role in the fibrogenesis of perisinusoidal spaces in the liver.