시각적 관찰훈련이 철봉 차오르기 동작 과제의 탐색능력 제고에 미치는 영향

정구인,최덕묵,김기범 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.4

The study aims to identify the difference in the effect of the learner's observation ability improvement presuming the qualified companion's feed back. The subject of the study was 77 male student not having experience of kicking up with the horizontalbar which is the theme of the study among 99 students in the regular gymnastics classes of D and K universities. 77 subjects were grouped to be the controlled group of 40 and the test group of 37. The study compares and analyzes the data from the post test based on the pre test data making as the baseline data. the data collected was went through the t-test with SPSS/PC +9.0 version, the lower program for personal computer and the significance level was set to p<.05. the results of the pre and post test onthe kicking up assignment performance and when compares the detection ability after the practicing of the visual observational training, it shows much significant difference between two groups (p<.001). when compared the pre test (11.63±2.96) of the controlled to the post test (14.03±3.60) of the controlled, became to be t=-6.283 and showed statistically significant, which considered to be the results of those from that the instructors verbal feed back in the assignment performance per steps in every classof the kicking up assignment and from that the detection ability could be improved between the companions by comparing mutual attitudes and from the efforts of the learner himself to train till the end of the class. By these results one can find that the detect error rating is with high difference at the post test rather that at the pre test in both of the controlled group and the test group. Especially, the test group of its post test mean is with remarkably high detect error rating than the controlled group.

역전파알고리즘 기반 자율주행로봇의 지역경로계획설계

정헌,박경석,이경웅,박기두,최한수 조선대학교 전자정보통신연구소 2002 電子情報通信硏究所論文誌 Vol.5 No.2

The research about the AMR has been progressed, which can bridge a disadvantage that a robot performs under a position unmoved. The AMR-Research constitutes skelton, path planning, AMRcontrol, sensor fusion and obstacle avoidance etc... The path planning of autonomous mobile robot use two method. One is global path planning and another is local path planning. In this paper, we study the local path planning of autonomous mobile robot move in unknown enviroment. This local path planning is based on neural network using the direction indicator rules learning. Also the system is made up of sensor system. The experimental results show that the developed direction indicator system operates properly and strongly at circumstance

협심증 환자에서 경피적 관동맥 확장술 후의 QT간격분산(QT Dispersion)의 변화

최일준,이일수,이상곤,홍명기,박성욱,박승정,김유호 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.9

양이장단자극을 이용한 각성유지 및 수면유도

정환목,배기성,김형식,우창진,최평,이만기 경북대학교 센서기술연구소 2002 센서技術學術大會論文集 Vol.13 No.1

버지니아 텍 자연자원대학 발전계획

최정기 江原大學校 森林科學硏究所 2005 Journal of Forest Science Vol.21 No.-

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Succinylcholine으로 유발된 Fasciculation과 Myalgia에 대한 Diazepam과 d-tubocurarine 전처치의 비교효과

최세진,길기진,이정은 충남대학교 의과대학 지역사회의학연구소 1985 충남의대잡지 Vol.12 No.2

Succinylcholine-induced muscle pain well documented. It is common to use subparalyzing dose of a non-depolarizing muscle relaxant before succinylcholine and accepted in clinical practice forpreventing of succinylcholine-induced fasciculation and it's associated sequalae. But it is needed to give large dose of succinylchcline to offer adeguate relaxation for tracheal intubation in these pretreated cases. This present study was undertaken to compare the effect of diazepam with d-tubocurarine on succinylcholine induced side effects. Sixty cases were studied if four different groups. In 1st group : no pretreatment, 2nd group : diazepam(0.05mg./kg.), 3rd group : diazepam(0.1 mg./kg.), 4th group : d-Tc.(0.05mg./kg.). The following results were obtained : 1. Diazepam pretreatment groups had no significant changes for the prevention of muscle fasciculation following succinylcholine compare to control group, but prevention of muscle fasciculation by d-Tc. pretreatment were significant. 2. Conditions for intubation were excellent in all groups. 3. In the prevention of muscle pain, there was no significant difference between the control and diazepam pretreatment group but significant difference between the control and d-Tc. prtreatment. 4) There was no specific relationship between muscle fasciculation and muscle pain.

山林休養 適地評價를 위한 GIS 技法에 관한 硏究 : 江原大學校 山林科學大學 演習林을 대상으로

崔朝龍,崔晶棋,禹鍾春 한국산림경제학회 2003 산림경제연구 Vol.11 No.1

본 연구에서는 GIS 기법을 이용하여 강원대학교 연습림을 대상으로 산림휴양기능을 평가해 보았다. 연습림 전체 면적 중 31개 지역의 400ha정도가 산림휴양기능을 발휘할 수 있는 능력이 있는 지역으로 나타났다. 이 지역들을 임반별로 살펴보면 총 7개 임반으로서 3, 4, 5, 6, 7, 14, 21 임반이 이에 해당되는 것으로 나타났다. 현재 연습림의 산림경영목표에 따라 자연학습·휴양림지역으로 관리되고 있는 지역은 7, 8, 9 임반이다. 따라서 본 연구결과에 의하면 7 임반이 모든 여건을 고려할 때 산림휴양기능을 발휘할 수 있는 가장 적절한 임반이라고 사료된다. This study was tried to evaluate the suitable area for recreational forests in the Research Forests of Kangwon National University using GIS technique. The results showed that around 400ha in 31 areas of the Forest was suitable for the recreational function. In terms of compartment, these areas were included in the compartment 3, 4, 5, 6, 7, 14 and 21. Compartment 7, 8, and 9 are designed and managed as natural learning and recreational forests. Considering these, we think that the 7th compartment is the most suitable region for forest recreational function.

殘留應力을 考慮한 鎔接材의 疲勞龜裂 進展擧動에 關한 硏究

최병기,이을호,국중민,기준호,임선빈,정장만 朝鮮大學校 機械技術硏究所 2000 機械技術硏究 Vol.3 No.1

The effect of welding residual stress on the initiation and propagation of fatigue crack is investigated so as to study the fatigue behavior in welding residual stress field. Especially, the relation between welding residual stress and fatigue crack opening behavior is investigated and the redistribution of residual stress as a fatigue crack propagates is examined. Following results are obtained. 1) In case of the load range is constant, as the stress ratio is changing to 0.1, 0.33, 0.5 the propagation life is constant but the growth life decreases. And than, when maximum load or minimum load is constant, as the stress ratio increases the growth life and propagation life increase. 2) The fatigue crack propagations rate da/dN appears to accelerate when the stress intensity factor range ΔK is less than 15MPa-m^1/2. 3) The residual stress that is appeared by welding decreases after cutting. 4) Fatigue crack propagation ratio is affected by tensional and compressible residual stress at the initial time, but it's similar to the original in the more than 20mm of crack length.

단백 methylase 억제제 5´-Isobutyl-5´-deoxyadenosine과 sinefungin에 의한 BALB/c mouse 비장세포의 증식과 분화의 억제

최의규,홍정희,한유정,백문기 大韓免疫學會 1995 大韓免疫學會誌 Vol.17 No.3

Whether or not protein methylation can be correlated with cell proliferation and differentiation in BALB/c mouse splenocyte cultures has been investigated by using methylase inhibitors, 5'-Isobutyl-5'- deoxyadenosine(SIBA) and sinefungin. 1) Protein methylase I and III activities were found to be elevated in LPS stimulated splenocytes, and the peak of protein methylase I was correlated with that of S phase fraction while changes in protein methylase III activity followed the changes in S phase fraction. 2) SIBA and sinefungin were proved to be potent competitive inhibitors of the protein methylase 'I and III in vitro with apparent Ki for sinefungin of both enzymes being lower than that for SIBA. 3) The protein methylase III were activated by 2-mercaptoethanol and dithiotreitol, and strongly inhibited by Cue+ in vitro; and the inhibition was almost completely released by dithiotreitol and diethyldithiocarbamate. 4) The extent of polyclonal antibody formation, S phase fraction and protein synthesis after induction by LPS were significantly inhibited in a dose response manner by SIBA and sinefungin with higher potency for the former. 5) Inhibition of cell cycle was also observed in the presence of cyloleucine, an inhibitor in SAM synthesis. 6) Of several enzymes investigated, namely protein methylase III, LDH, yglutamyltranspeptidase, and adenosine deaminase, the- protein methylase III was most markedly increased by LPS and decreased by SIBA and sinefungin than other enzymes. From the above results, it is suggested that SIBA and sinefungin suppress the cell proliferation and differentiation through the inhibition of protein methylation.

상분리법을 통하여 제조된 새로운 개념의 지지형 액막의 기체투과특성

최평호,김범식,이정민,김철웅,구기갑,이상학 한국공업화학회 2004 공업화학 Vol.15 No.1

새로운 지지형 액막(SLM)을 용매 증발에 따른 1차, 2차 상분리법으로 3성분 고분자 용액으로부터 제조하였다. 액막재로 이온액인 BMIBF_(4) (BMI+ =1-(1-butyl)-3-methylimidazolium, BF_(4)=tetra-fluoro boratr)와 매트릭스 고분자로 polyvinylidenefluoride(PVDF)가 사용되었다. 이 고정화 액막의 O_(2), N_(2) 그리고 CO_(2) 기체 투과특성을 여러 조작 조건에서 조사하였다. SLM은 가혹한 조건에서 조작하였음에도 불구하고 오랜 시간동안 높은 CO_(2) 투과도 및 선택성을 유지하였다. 투과거동을 나타내는 인자인 투과도, 확산도, 그리고 용해도를 연속 측정 장치를 통하여 구함으로써 특성을 관찰하였다. SLM은 다른 기체에 비하여 CO_(2)에 대해서 높은 투과도와 선택도를 갖고 있었다. 특히, 막내 CO_(2)의 용해도는 다른 기체들에 비하여 매우 높은 반면 확산도는 큰 차이를 보이지 않았다. 또한 막내 이온액의 조성은 CO_(2) 용해도에 영향을 관찰할 수 있었다. 막내 이온액의 조성이 증가함에 따라서 CO_(2) 의 투과도 및 선택도가 극격히 증가하였다. 이는 SLM를 통한 기체 투과에 있어서 용해도가 주인자로 큰 영향을 끼침으로써 막내 이온액 조성 증가 SLM의 투과에 큰 영향을 미침을 확인하였다. The new supported liquid membranes (SLMs) were fabricated from ternary polymer solution contained ionic liquid in which primary and secondary phase separations were induced by the solvent by the solvent evaporaton. The used ionic liquid and polymer matrix were BMBF_(4) (BMI+=-(1-butyl)-3-methylimidazolium, BF_(4)-tetra-fluoro boratel and polyvinylidene fluoride (PVDF). Gas permeation properties of the SLM to O_(2), N_(2) and CO_(2) were studied at various operating conditions. Although the SLM were operated under severe operating condition, it maintained high CO_(2) permeability and selectivity for quite long time. The solubility coefficient of CO_(2) in the membrace was very high in comparison with those of other gases; whereas there was no big difference in the diffusivity between CO and other gases. Moreover, in the permeation of pure gases, it is observed that the ionic liquid content in the membrane affected the solubility of CO_(2) in the memhranc. With increasing ionic liquid content in the membrane, the permeability and selectivity of CO_(2) increase significantly. There fore, in the permeation of gases through SLM, the overall permeation performances weir affected mainly by solubility coefficient. This observation can be discussed in terms of the influence of solubility coefficient with ionic liquid content in the membrane.