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U-통계량을 이용한 어떤 비모수적인 두표본 위치검정의 점근 상대효율성에 관하여
조규민,조건호,하일도 대구대학교 (한사대학) 산업기술연구소 1993 産業技術硏究 Vol.12 No.-
This paper set up the nonparametric test statistic U₂, which expanded U₁-statistic with degree(3,3) into the form of a two-sample U-statistic with degree(5,5), say U₂for the purpose of developing the statistic that may be more efficient than the U₁-statistic suggested by Shetty & Govindarajulu(1988), in a two-sample location test. We compared the U₂test with the previous test, in the sense of ARE, under some special population distributions. To obtain the ARE of teh U₂test w.r.t. the previous test, the asymtotic null distribution and the efficacy of U₂were derived. Conclusively, we discovered that the U₂test expanded to degree(5,5) was more efficient than the previous test in heavy-tailed distributions like the double exponential and Cauchy.
강모단 하방에 용수철이 부착된 칫솔의 치태 제거 효과에 관한 임상적 연구
조성훈,양규호,오종석 전남대학교 치과대학 2000 전남치대논문집 Vol.12 No.1
Oral examinations were conducted before the experiment started. The students were given common toothbrushes (control group) or spring-attached toothbrushes (experimental group) and instructed to brush their teeth by scrubbing method. Measurement of plaque index and count of salivary bacteria were done at 0, 1, 3, and 5 weeks. 1. Mean plaque index was significantly reduced at week 1 compared with at week 0 in both groups. (P<0.05) 2. Mean plaque index was significantly reduced at week 3 compared with at week 1 in the experimental group. (P<0.05) 3. Mean plaque index was significantly reduced at week 5 compared with at week 3 in the experimental group. (P<0.05) 4. There were no significant differences of mean plaque index among week 1, week 3, and week 5 in control group. (P>0.05) 5. The number of salivary bacteria was slightly reduced during the experiment, however there was no statistical significance. (P>0.05) To reduce the plaque effectively, the use of spring-attached toothbrush should be recommended, and adequeate instruction for children is needed.
흉배혈관의 근피 천공분지에 기초한 유리피판의 임상적 이용
조규성,김대영,안호범,이삼용,조백현 大韓成形外科學會 1999 Archives of Plastic Surgery Vol.26 No.3
The latissimus dorsi muscle or musculocutaneous flap is one of the most useful flaps in reconstructive surgery. This flap has many advantages, such as its reliable anatomy, long pedicle with large caliber vessels, minimal functional deficit of the donor site, and low incidence of donor site complications. However, the bulkiness of the flap has been considered a disadvantage, so various modifications of technique have been devised. The cutaneous portion of the flap can be safely elevated based on the cutaneous perforating branch of the thoracodorsal vessel. From March 1997 to February 1998, 10 patients underwent reconstructive procedures with thoracodorsal perforator-based free flaps. The composition of the flaps varied in accordance with the nature of the defect. The variances in the flaps were as follows; 3 were cutaneous, 6 musculocutaneous, and 1 osteomusculocutaneous including the rib. All flaps survived with good contour. We concluded that this thin and reliable flap was useful for reconstruction of various defects, and that the composition of the flap, such as subcutaneous, muscle and bone, gave it considerable flexibility as needed.
비동맥류성 자발성 지주막하 출혈을 예측할 수 있는 뇌전산화 단층촬영 소견
조용은,허승곤,서정호,이규창 대한신경외과학회 1988 Journal of Korean neurosurgical society Vol.17 No.5
Fourty-seven patients with non-aneurysmal spontaneous subarachnoid hemorrhage were reviewed retrospectively. Attention was directed to the distribution and amount of subarachnoid hemorrhage on computerized tomography scans. Though the hemorrage could be distributed in all cisterns, the frequency and amount of hemorrhage were higher in infratentorial cisterns than in supratentorial cisterns. Among infratentorial cisterns, the hemorrhage was distributed to cisterns around the brainstem mainly and it had a predilection for interpeduncular cistern. Also the telangiectasia of thalamoperforating artery might be one of the causes of non-aneurysmal spontaneous subarachnoid hemorrhage.
金剛山댐 建設에 따른 北漢江 上流 水域의 環境 모니터링에 관한 硏究
조규송,김범철,안태석,전상호,이종범 江原大學校 附設 環境硏究所 1989 環境硏究 Vol.6 No.-
Aquatic ecosystem was studies in Lake Paro to monitor the effects of the Keumkangsan Dam construction in North Korea. Water quality, primary prodectivity, and microbes were serveyed bimonthly in 1987. The texture and composition of sediments, and meterological sapects were also investigated. The most remarkable change of water quality was the increase of turbidity. due to the dam construction. Overall chemical and biological aspects were greatly changed because of the high turbidity. The concentration of phosphate increased and subsequently phytoplankto standing corp increased. The effect of phosphate increase was compensated by the decrease of light penetration, and, therefore areal primary prodectivity was not so high as expected from the chlorophyll concentration. From the standing corp of microbes, the trophic state of lake Paro was evaluated as mesotrophy. As for the horizontal variation of microbial activity, the microbial heterotrophy was higher in the upstream regions than in the downstream regions. Sediment types are almost clayey silt and the mean sizes of sediments were homogeneous through the whole lake area. Organic carbon contents of the sediment seemed to be influenced by seasonal variation of primary productivity.
조사현,양규호,김수지 大韓小兒齒科學會 1997 大韓小兒齒科學會誌 Vol.24 No.3
This report presents a case of adolescent patient who had multiple impacted teeth and no systemic disease, and was treated with removable and fixed orthodontic appliances. The results obtained through these cases were summarized as follows: 1. Even in the case without systemic disease, there can be the delayed eruption of multiple teeth. 2. If the root formation is not completed, root have no excessive curvature, axial inclination of the tooth is not excessive, and there is eruption space, the tooth can be induced to normal occlusion. 3. Since esthetically proper occlusion and dentition was acquired by recovery of the impacted teeth ot normal occlusion, the prosthodontic treatment after extraction of the impacted teeth was less needed. 4. This treatment brought psychological stability to pubertal patient who was interested in his facial profile.
수은, 납 및 구리에 대한 붕어(Carassius auratus)와 돌고기(Pungtungia herzi) 자어의 급성독성
조규석,박종호,김주찬 한국물환경학회 2004 한국물환경학회지 Vol.20 No.3
Larva of Carassius auratus and Pungtungia herzi were exposed to mercury (HgCl₂), lead (PbCl₂) and copper (CuSO₄) to determine acute toxicity. The toxicity tests were conducted triplicate and the LC_(50) values (24, 48, 72 and 96 hours) were determined for two species. Data obtained from the toxicity tests were evaluated using the probit analysis. Although sensitivities of two species to mercury were relatively similar, C. auratus was more susceptible than P. herzi to the exposure of lead but P. herzi was more sensitive than C. auratus on copper. The sensitivity on three metals tested may be ranked in the following order from highest to lowest toxicity on larval stage of these fish: mercury > copper > lead. It is suggested that acute toxic test at the larval stage of C. auratus and P. herzi, indigenous species in Asia area, is an important part of the ecotoxicological assessment of some heavy metals.
조성훈,양규호 大韓小兒齒科學會 1997 大韓小兒齒科學會誌 Vol.24 No.4
Odontogenic maxillofacial space abscess in children was treated by the surgcal intervention combined with antiboitic therapy. Followings are the results after monitoring its progression. 1. Maxillofascial space abscess is mainly from the odontogenic infection and it may result in the severe states with the various fascial spaces and their relatives. So their early detection and treatment are needed. 2. The most common symptom in patients was the pain under palpation with painful swelling and the mouth floor elevation was observed in the sublingual space abscess. 3. In most cases, for its treatment, symptomatic therapy, antibiotic therapy, surgical incision and drainage were executed. If the infected tooth is possibly conserved, endodontic treatment is preferred, otherwise, it will be extracted as soon as possible.