월악산 지역의 리기다소나무 조림지에서 간벌후의 갱신 특성

정택상,권기철,김홍은 忠北大學校 農業科學硏究所 2002 農業科學硏究 Vol.19 No.-

The objective of this study was to examine the growth and regeneration patterns of hardwood saplings after thinning of Pinus rigida planted at Mt Worak After thinning of P. rigida, r-selection species such as Rubus crataegifolius B, Lespedeza maximowiczii C, Aralia elata var canescen N., Rubus oldham M and Quercus spp were mainly appeared Regarding to numbers of young trees appearance, Q. mongolica F, Q acutissima C, Q. serrata T and Q variabilis B1 were appeared respectively At the study area after thinning, Q. mongolica F was regenerated by sprouts on the other hands, Q. acutissima C, Q serrata T and Q. variabilis B1 were regenerated by seedlings. The results of this study indicated that Q mongolica F tended to dominate as a natural regenerated species after thinning of the P. rigida. At the humid area, Q serrala T tended to dominate. While, at the dry area, Q. mongolica F. tended to dominate. In the case of Q. variabilis B1, no significant influence was found due to small number of population.

대기오염이 기관지 천식의 악화에 미치는 영향

류지원,어수택,김기업,이영목,김양기,홍성아,전창균 순천향의학연구소 2007 Journal of Soonchunhyang Medical Science Vol.13 No.1

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도착 및 공평할당비율을 이용한 GFR 서비스 트래픽 제어 기법

김남희,정경택,박기홍 국립7개대학공동논문집간행위원회 2004 공업기술연구 Vol.4 No.-

The Guaranteed Frame Rate(GFR) service has been designed to accomodate non-real-time applications and it is not only guarantees a minimum throughput at the frame level, but also supports a fair share of available resources. In this paper, we propose a cell scheduling scheme which can improve the fairness and the goodput through the traffic control in GFR service. For the evaluation of the proposed scheme, we compare the proposed scheme with the existing scheme in the fairness and the goodput. Simulation results show that proposed scheme can improve the fairness and goodput comparing with the existing buffer management scheme.

Wiskott-Aldrich 증후군 환아의 증례보고

이연주,현홍근,장철호,김영재,김정욱,장기택,김종철,한세현,이상훈 대한소아치과학회 2007 大韓小兒齒科學會誌 Vol.34 No.3

Racket 運動時의 反應時間과 運動速度 改善을 爲한 Simulator 「SQT」에 關한 硏究

허복,蔡鴻遠,李來華,李敏炯,金基學,鄭相澤,朴宇奎 慶北大學校 體育科學硏究所 1986 체육과학연구지 Vol.2 No.-

The main purpose of this study was to improve greatly the most important reaction time(RT) and speed of movement (SM) at racket exercise by making program for simulator super quality training (S.Q.T) and applying it. The subjects employed were 25 male athletes composed of soccer players 8, volleyball players 7, shooting players 2, soft-tennis players 2, gymnastics player 1, and rugby football player 1 at the Kyungpook National University. We devided each sport player half and half by means of their pre-testing reaction time, and the subjects were devieded into experimental and control group. Experimental group was drilled by using light stimulus simulator training method and control group was drilled by using sound stimulus simulator training method. The training was practiced 20∼30 minutes a day regularly and 5 times a week for 5 weeks. Two groups practiced concentrically experimental learning by using light and sound simulator equipment by S.Q.T. program under equal condition. The propriety on the training effect was investigated by longitudinal analysis of results tested before and after experiment. As the result of the experiment, superiority and inferiority of two groups was evaluated by trying crosssectional analysis. The results obtained were summarized as follows: 1. Reaction time Experimental group; The performance of this group was greatly improved after experiment. Control group; The performance of this group was greatly improved after experiment. Comparison of two groups; Leftward simple completion time showed a significant difference (p<.01), but the other elements did not showed it. As a whole, experimental group was superior to control group, but statistics showed little difference between the two groups. 2. Speed of movement Experimental group; The performance of all elements were improved after experiment(over p<.05). Control group; The performance of this group was improved at only 4 of 9 elements after experiment Comparison of two groups; The performance of service and dash showed a significant difference (p<.01) and the others did not showed it. But as a whole, experimental group was superior to control group in their performance. 3. Viewing Variance and correlation coefficient at the change of RT and SM, there were differences in the variance. This means that the standard deviation is great; i.e. the individual difference is great. The lower correlation coefficient means that correlationship is low in the performance before and after experiment: i.e. it means that individual difference was decreased because the gap of two groups, correlation coefficient became less. Especially, statistics showed that the record of the lower recorded players could be shortened to a maximum.

파손된 치면열구전색제의 수리 방법에 따른 미세누출 비교

강명봉,현홍근,김영재,김정욱,장기택,이상훈,한세현,김종철 대한소아치과학회 2007 大韓小兒齒科學會誌 Vol.34 No.2

치면열구전색은 수 십년간 교합면 우식의 예방에 가장 효과적인 방법 중 한가지로 알려져 왔다. 하지만 치면열구전색제의 마모와 파절 때문에 치면열구전색제의 재시술 또는 수리를 필요로 하게 되었다. 본 연구의 목적은 파손된 치면열구전색제를 수리할 때 치질과 잔여 전색제의 표면처리 방법에 따른 미세누출 차이를 알아보고자 하는 것이다. 120개의 영구 대구치에 치면열구전색제를 적용하고 인위적인 파손을 만든 뒤 인공타액에 4주 동안 보관하였다. 4주 후 근심 또는 원심의 치면열구전색제가 완전히 파손 양상을 나타내는 치아 60개를 선택하여 각각 15개씩 4개 군으로 나누어 실험에 사용하였다. 각 군을 산부식만 시행한 경우(1군), air-abrasion만 시행한 경우(2군), 산부식 후 결합제를 적용한 경우(3군), air-abrasion 후 결합제를 적용한 경우(4군)로 나눠 각각의 치아를 표면처리한 후 치면열구전색제를 도포하였다. 고온(55℃)과 저온(5℃)에서 각각 30초씩 500회의 열순환을 시행한 뒤 미세누출도를 검사하여 다음과 같은 결과를 얻었다. 1. 치면열구전색제/치면열구전색제 경계면에서 미세누출도는 결합제 사용 유무에 관계없이 air-abrasion을 처리한 2군, 4군에서 산부식을 사용한 1군, 3군보다 낮은 값을 보였고(p<0.05) 1군과 2군, 3군과 4군 사이에는 통계적 유의차가 없었다(p>0.05). 2. 치면열구전색제/치아 경계면에서 미세누출도는 결합제를 사용한 3군, 4군에서 결합제를 사용하지 않은 1군, 2군보다 낮은 값을 보였고(p<0.05) 산부식을 사용한 1, 3군과 air-abrasion을 사용한 2, 4군 사이에는 통계적 유의차가 없었다(p>0.05). 3. SEM 상에서 치면열구전색제를 산부식 처리하였을 때 표면거칠기의 증가가 적었으나 air-abrasion 하였을 경우 표면거칠기가 현저하게 증가하는 것을 관찰하였다. The aim of this study was to investigate whether differences in surface treatment Prior to repair influenced the seal of a resin fissure sealant placed on the occlusal surfaces of permanent molar teeth. One hundred and twenty extracted human molars were selected and a light curing sealant was placed on their occlusal surface following cleaning by prophylaxis and acid etching. The teeth were deliberately damaged, and then stored in artificial saliva for four weeks. Sixty teeth with the desired morphology of sealant failure were randomly divided into four groups where one group was treated with only etching agent, another by only air-abrasion, another by applying an etching agent followed by a bonding agent, and the last by air-abrasion followed by a bonding agent each. After sealant application, the samples were thermocycled and the degree of microleakage was determined. The results were as follows: 1. In the sealant/sealant interface, group 2(0.22), 4(0.23) using air-abrasion showed a significantly lower microleakage score than group 1(0.38), 3(0.35) using an etching agent(p<0.05). There were no statistically significant differences(p>0.05) between groups 1, 2 and groups 3, 4. 2. In the sealant/tooth interface, group 3(0.20), 4(0.20) which used a bonding agent showed a significantly lower microleakage score than group 1(0.35), 2(0.40)(p<0.05). There were no statistically significant differences (p>0.05) between groups 1, 3 and groups 2, 4. 3. In SEM examination, while sealant surfaces treated with etching did not result in highly rough surfaces, those treated with air-abrasion did show rough surfaces.

자궁경부의 상피내암 조직내 In Situ Hybridization에 의한 Human Papillomavirus DNA의 검색 및 Typing

이상숙,김기권,정재홍,김택훈,이태성,진승원,손우익 대한의학협회 1990 대한의학협회지 Vol.33 No.1

심실 중격 결손에 의한 감염성 심내막염 환자의 치과치료

양정현,현홍근,김영재,김정욱,장기택,이상훈,한세현,김종철 대한소아치과학회 2007 大韓小兒齒科學會誌 Vol.34 No.3

社會體育振興을 위한 國民意識 再考方案

金柄斗,蔡鴻遠,安禹洪,李敏炯,申榮吉,金基學,鄭相澤,林銖遠 慶北大學校 體育科學硏究所 1987 체육과학연구지 Vol.3 No.-

The purpose of this paper is to investigate and analyze the nation's consciousness about the social physical education by regional groups(big cityes, middle cityes, farm village, fishing villge). And the researchers are to find a way to populize this movement. These subjects for this investigation were chosen at random among the citizens in four region. 4,450 sheets of questionnaire were given to the citizen. And 3,587(81%) sheets of them were received from male(2,582) and female(975) citizens. The results of this investigation are as follows: 1. The nation's consciousness has not been still modernized and the nation tend to depend on their doctors rather than on the new active leisure sports, which is a passive and conventional way, to keep their health. 2. Most people have spent their leisures on nonactive hobby such as reading, listening to music, and watching TV rather than sports. 3. Most residents pointed out lack of facilities, and needed professional directors and various programs they could participate. 4. The opening of citizen athletic field and the gymnasiums to citizens was needed to recruit the lack of facility, and the participation to commercial sport ws differed by economical status and leisure time, however, they usually participated such activities as table-tennis, swimning and tennis. 5. To activate social physical education, first of all, an expansion of the facilities such as athletic fields and gymnasium is needed under the active support of government. 6. The facilities for young men and the handicapped is insufficient, and to prevent juvenile delinquency and guide them into the right way, we should lead them out to participate sports activity. And the facility for the handicapped is needed too.

Predictive value of p16/Ki-67 dual-stained cytology for the progression of cervical dysplasia: HPV cohort study

( Yoo-kyung Lee ),( Kyung-a So ),( Mi-kyung Kim ),( In-ho Lee ),( Tae-jin Kim ),( Kyung-taek Lim ),( Ki-heon Lee ),( Sung Ran Hong ) 대한산부인과학회 2016 대한산부인과학회 학술대회 Vol.102 No.-

목적: Objective: Regression rates for atypical squamous cells of undetermined significance (ASCUS) or low-grade squamous intraepithelial lesion (LSIL) range widely, from 30% to 80%. The objective of this study was to investigate the predictive value of p16/Ki-67 dual-stained cytology for the progression of disease. 방법: Method: Cytology p16/Ki-67 dual-staining test was performed on 691 liquid-based residual samples from a cohort of women with ASC-US/ LSIL and co-testing human papillomavirus (HPV) positive. Among them, 250 women were followed up for at least a year. Study end points were HSIL detection in 1 and 2 year’s follow-up. 결과: Results: Positivity of p16/Ki-67 dual stained cytology was well correlated to progression of disease compared with positivity of HPV 16/18. During 1 year follow-up, 23 of 250 women experienced progression of disease into HSIL. For positivity of p16/Ki-67 dual stained cytology, Sensitivity (60.9%) for the detection of HSIL or specificity (81.5%) for normal or low grade cytology was higher than those of HPV 16/18 tests (13.0% and 89.0%, respectively) (p<0.001). During 2 years follow-up, 11 of 190 women experienced progression of disease into HSIL. For positivity of p16/Ki-67 dual stained cytology, Sensitivity (45.5%) for the detection of HSIL or specificity (82.1%) for normal or low grade cytology was higher than those of HPV 16/18 tests (18.2% and 89.9%, respectively) (p=0.025). 결론: Conclusions: p16/Ki-67 dual stained cytology could provide both high sensitivity and specificity for the prediction of HSIL in Pap cytology in the future. Positive p16/Ki-67 dual-stained cytology in low grade cytology was highly associated with the progression of disease in 1 or 2 years follow- up. Therefore, in cases of positive dual-stained cells morphologically showing benign atypical features, further follow-up would be necessary.