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      • KCI등재

        배구경기의 서브 기능 테스트 평가모형 연구

        최희남(Choi Hee-Nam) 한국체육과학회 2001 한국체육과학회지 Vol.10 No.1

        The purpose of this study was to verify the validity and reliability on the 4 types of volleyball serve skill testing model. Subjects were 2 grade women's middle school(n=122) student which had practiced underhand serve for 6 week before the trial. They were tested 4 types of volleyball serve skill testing model in randomly order. The 4 types of testing model included AAHPERD, Russell-Lange Choi's model and new designed professional model which was invented by physical education teacher at middle school. We tested twice in randomly order and evaluated the validity, reliability and skill improvement on the 4 types of volleyball serve skill testing model. The results were as follows; 1) There were high correlation(r=.80) in validity among 4 types of volleyball serve skill testing model(p<01). 2) We examed a pre and post serve skill test for each model, and there were significant correlation in reliability for Choi's model(r=.839) and AAHPERD(r=.794) in order. 3) For the compensating the validity and reliability on the 4 type testing model, we have compared the scatter gram to normal curve and evaluating the skeness and kurtosis. Ther were high values on the Choi's model which was .833 and AAHPERD(.675) in skewness. In addition, there were positive value in kurtosis on the Russel-Lange which was .037 and negative values on the 3 testing model. 4) It has showed that success of serve test was 63.5% following 6 week practice and 30% of the students did not make any serve in the trial. 5) There were significant correlation between physique and serve skill among 4 types of volleyball serve skill testing. Specially, we have verified that height showed highest correlation with success of volleyball serve(r=.303). In summary, evidence for the combined evaluation of normal curve, reliability and validity on the 4 types testing model, we have concluded that choi's model showed the best evaluation method for middle school student. Furthermore, Choi's model revealed the easiest way to drawing court in class exam. Therefore, we recommended that Choi's model was the most valuable underhand volleyball serve skill testing model among the 4 model and very effective testing method for middle school student.

      • KCI등재

        Floristic characteristics of vascular plants and first distributional report of Pseudostellaria baekdusanensis M. Kim in Yongneup wetland protected area

        Young-Chul Kim,Hyun-Hee Chae,Sang-Heock Oh,Seung-Ho Choi2,Moon-Pyo Hong3,Gi-Heum Nam,Jae-Yoon Choi,Hyun-Sook Choi,Kyu-Song Lee 한국환경생태학회 2015 한국환경생태학회지 Vol.29 No.2

        Yongneup wetland protected area, the only high moor in Korea, is a core area to conserve biodiversity. Even though the Yongneup wetland protected area is relatively small, various plant species are distributed in the Yongneup wetland protected area because it includes various habitats showing different environmental gradients. Vascular plants distributed in the Yongneup wetland protected area were identified as a total of 376 taxa that is composed of 73 families, 217 genera, 322 species, 3 subspecies, 44 varieties and 7 forms. For endangered plants designated by the Ministry of Environment, 5 species including Trientalis europaea var. arctica, Lilium dauricum, Halenia corniculata, Lychnis wilfordii and Menyanthes trifoliata were found and 34 taxa were confirmed to be distributed only in the mountainous wetland habitats. Regarding naturalized plants, a total of 11 taxa were distributed, but most of them were distributed in the areas where artificial interference has occurred. And in areas inside the wetlands that are relatively well preserved, 2 species of Bidens frondosa and Erigeron annuus were observed. In this study, the occurrence and distribution of Pseudostellaria baekdusanensis M. Kim, which was recently found in Mt. Baekdu and reported as a new species, were identified in the Yongneup wetland protected area. A wetland is a very vulnerable area to drastic environmental changes and damages to its ecosystem could cause the extinction of rare plant species which are distributed only in the wetlands. Therefore, it is mandatory that current status of the Yongneup wetland protected area is evaluated and actions to prevent rapid environmental changes are taken. Fourteen separate investigations were conducted in 2013 and another four in 2014, to evaluate current status of the Yongneup wetland protected area. These investigations have provided us the basic information for future actions of conservation and restoration.

      • 정상교합인의 두부위치변화에 따른 교합접촉점의 변화에 과한 연구

        최희철,이성복,최대균,박남수 慶熙大學校 齒科大學 1994 慶熙齒大論文集 Vol.16 No.1

        The understanding the nature of occlusal tooth contacts of natural dentition is important for correct diagnosis and treatment of diseases developed in stomatognatic system. Several investigator have studied the distribution of tooth contacts in maximum intercuspation and have repored contact locations with respect to the tooth position. However, there are few report the variation of the occlusal contact point with change in each head position. This study analysed the number of occlusal contact point with change in each head position. 30 subject(male 17, female 13), who had natural occlusion and no symptoms of temporomandibular disorder, were selected. The numbers and patterns of tooth contact were recorded by silicone bite registration on stone model at four different head positions with head anguration gauge(from the supine to the upright position). The results obtained were as follows: 1. The numbers of total occlusal contact point on teeth increased to average 25, 29, 35, 42 points as head angulation was changed from the supine to the upright position against the ala-tragus line, and there was significant difference (P<0.05) 2. In the 19 subject(65%) of total 30 subject, the perforated point of the silicone bite indicated that the locus for the prime contact point moved mesially as the head angulation was changed from the supine to the upright position. 3. On the basis of the fact that the anterior occlusal contact point increase as head angulation changed from the supine to the upright position,we could find that the mandibular position is moved anteriorly.

      • KCI등재

        괴사성 치은구내염환아의 증례보고 : CASE REPORT

        최남기,정희경,양규호,김선미 大韓小兒齒科學會 2006 大韓小兒齒科學會誌 Vol.33 No.1

        괴사성 치은염(Necrotizing ulcerative gingivitis, NUG), 괴사성 치주염(necrotizing ulcerative periodontitis, NUP),괴사성 구내염(necrotizing stomatits, NS), 그리고 수암(noma, cancrum oris)은 급속도로 파괴적이며 쇠약하게 하는 잠재성이 큰 구강감염으로 질환의 같은 진행과정에 대해 다른 임상단계로 간주되기도 하나 집합적으로 Vincent's infection, infectious oral necrosis 또는 괴사성 치은구내염(Necrotizing gingivostomati-tis, NG)라고 한다. 이러한 necrotizing gingivostomatitis(NG)의 발생률은 0.19~0.5%이며 2~6세에 가장 높은 발병율을 보인다. Necrotizing gingivostomati-tis는 치명적인 바이러스 감염과 면역체계가 약화된 경우 발생할 수 있으며 주 진단학적 증상으로 동통, 치간유두 부위의 궤양이나 괴사, 치은출혈이 있으며 이차적인 증상은 위막 등이 있다. 이에 본원 소아과에서 의뢰되어 necrotizing gingivostomatitis로 진단받은 환아의 구강내 소견 및 치료경과에 대해 보고하고자 한다. Necrotizing ulcerative gingivitis(NUG), necrotizing ulcerative periodontitis(NUP), necrotizing stomatitis(NS), and Noma(cnacrum oris) are rapidly destructive, debilitating, and potentially serious oral infection which considered to be different clinical stages of the same process. These have been collectively referred to as: Vincent's infection, infectious oral necrosis, or necrotizing gingivostomatitis(NG). Prevalence of necrotizing gingivostomatitis is 0.19~0.5% and peak incidence is 2-6 years of age. The etiology and pathogenesis of necrotizing gingivostomatitis have been associated with virulent bacteria and impaired host defense and the primary diagnostic signs are pain. interdental ulceration or necrosis. and gingival bleeding. Secondary diagnostic sign is pseudomembrane. This case report was about oral conditions and treatment of the patient who referred from the Dept. of PED and diagnosed a necorotizing gingivostomatitis.

      • MWPC 위치검출기의 X-선 천체물리학에의 응용

        남욱원,최철성,문신행,강희동 경북대학교 센서기술연구소 1990 센서技術學術大會論文集 Vol.1 No.1

        1983 년경 국내에서도 과학탐사 로케트와 인공위성이 발사될 예정에 있으며 이에 따라 X-선 천체물리학을 위한 방사선 센서의 국내 개발이 시급히 요청되는 바이다. 따라서 현재 방사선계측에 많이 이용되고 있는 방사선 센서들 중 국내에서 개발되어온 MWPC위치검출기를 소개하고 인공위성 혹은 과학탐사로케트에 탑재되어 X-선 천체물리학연구에 이용될 경우 연구 개발되어 나가야 할 방향을 제시하고자 한다. Domestic sounding rocket and scientific satellite are scheduled to launch around 1993. The development of radiation sensor is required to observe X-rays coming from celestial bodies by the use of those space vehicleS. In this study we introduce the multi-wire position sensitive detector and the future works of onboard detector for X-ray astrophysics.

      • SCOPUSKCI등재

        백서의 원위부 피편에 동맥유입의 중요성에 관한 실험적 연구

        최규남,최희윤,강희문,김한중 大韓成形外科學會 1983 Archives of Plastic Surgery Vol.10 No.2

        Microsurgery and myocutaneous flap have been developed recently for wide employment in plastic and reconstructive surgery. Therefore, the delay procedure has been declined in its use recently, because it has many difficult problems. If the flap is longer and larger, it should be delayed for complete survival, but delay requires considerable time. Therefore, as a substitute for delay, vascular anastomosis in the distal part of a flap will theoretically give the same effect. In this study, we investigated the importance of arterial inflow in the distal side of a flap in rats. The experiment was done in 3 different groups according to the design of flaps and in each group 3 subgroups were made. In A flap, the superficial epigastric artery was preserved or anastomosis. In V flap. the superficial epigastric vein was preserved or anastomosis. In C flap, as a control flap, both artery and vein were severed. In result, A flaps in all 3 groups were completely survived. Both V and C flaps in all 3 groups were showed distal necrosis. But C flaps were showed more necrosis than V flaps. In conclusion, we suggest the possibility that a large flap may be transposed in one stage with vascular anastomosis in the distal part-preferably artery and vein, or artery only.

      • KCI등재

        體育授業의 效率的인 指道方法에 關한 硏究 (Ⅱ) : 排球競技를 中心으로

        崔喜男 西江大學校 生活相談室 1982 人間理解 Vol.4 No.-

        1. Motivation of Study. Annual physical education hours stated on the curriculum of middle school should be offered 105 hours by all the students, from first year students to third year students. Among 105 hours, 21 hours (20% of 105 hours) are allocated to ball game units. According to the allocated hours, one item of ball games is allocated only 75 hours in a year. The researcher thinks it is the best way to improve the teaching method (teaching technique) for teaching efficiently for the purpose of achiving standard level because the hours stated on the curriculum are short hours. 2. Purpose of Study. The purpose of this study is to improve an efficient teaching method the services of volleyball through an experimental study, to establish the objectives of the lesson to every grade by suggestion the achievement standard leveland to supply efficient evaluation materials. 3. Method of Study. 1) The object of this study were 1260 girls students of 4 middle schools in Seoul. 2) Under the curriculum, the items of this study were under hand service for first year students, over hand service for second year students, and floater service for third year students. 3) The experimental results were analyze dby the teaching method and the achievement standards. 4) The period of the study was from September 1st, 1981 to January 30th, 1982. 4. Problems. 1) The sudents selected for the this study were not volleyball players but general students. 2) The quality and intensity of service were not considered. 3) The results were compared by the lesson teaching method designed by the researcher. 5. The results are summarized as follows: 1) It is the most efficient method for the students to learn under hand serve for the curriculum of first year students at the point of 4.5 meters from the center line with making steps backward gradually. 2) It is the most efficient method to learn over hand service for the curriculum with making steps backward gradually. 3) It is the most efficient method to learn floater serivce for the curriculum of third year students at the point of 4.5 meters far from the center line with making steps backward gradually. 4) It is suitable to establish 40% achievement rate in the objective of under hand service. 5) It is suitable to establish 10% achievement rate in the objective of lesson of over hand service. 6) It is suitable to establish 20% achievement rate in the objective of lesson of floater service. 7) It seems that over hand serve and floater serve are difficult to learn for middle school girls students.

      • KCI등재

        환경친화성 계면활성제를 이용한 어병균의 살균효과

        최상원,정관용,오남희,김은영,방정환,김정우,여문환 한국환경과학회 2000 한국환경과학회지 Vol.9 No.5

        The antibacterial effect amino acid-copper(Ⅱ) surfactant on fish pathogens was studied. Fish pathogens of Edwardsiella tarda, Vibrio anguillarum, Aeromonas hydrophila and Streptococcus sp. were selected, cultured in nutrient agar and adjusted at 2 × 10 exp (5)∼10 exp (6) CFU/㎖ in phosphate buffer saline before the addtion of amino acid-copper(Ⅱ) surfactant with different concentrations. All tested pathogens died within 1 hour with 1 ppm of amino acid-copper(Ⅱ) surfactant. In comparison with formalin and ET, amino acid-copper(Ⅱ) surfactnat was more effective in antibacterial capacity.

      • KCI등재

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