축차확률비 검정을 이용한 실제값과 Wald 근사값의 정확도에 관한 연구

조규민,조건호,박용우 대구대학교 산업기술연구소 1993 産業技術硏究 Vol.12 No.-

Sequential analysis refers to techniques for testing hypotheses or estimating parameters when the sample size is not fixed in advance but is determined during the course of the experiment by criteria which depend on the observations as they occur. In this paper, We considered the properties of Wald approximations in S.P.R.T. and compared exact value with the Wald approximations by using a example and then found the error probabilities α_(0),α₁and expected sample size (average sample number) E(N) by S.P.R.T in AR(1). Conclusively, We discovered that Wald approximations tend to over-estimate the true error probabilities.

「작물별ㆍ재배유형별 표준시비량과 시비추천량」프로그램

정호근,조재규,최칠구,김사균 한국농업정보과학회 2000 농업정보과학 Vol.2 No.1

Generally farmers cultivate 2 or 3 crops in a year, In some cases more than 10 crops are culti-vated in a year by a farmer, These crop numbers and varieties also might be changed depending on the farmer's income based on the crop. Therefore, farmers have diHiculty in configurating the recommended for-tilizer rate for each crop. This study developed a series of user-friendly EXCEL Program to help farmers and extension specialists making decision on fertilizer rate for each crop. By using the program farmers can decide appropriate fertilizer rates based on the soil test results for each field and crop, which can improve fertilizer use efficiency. Also, this program might be useful to make a farm plan by reflerting fertilizer tost required for each field.

다수 영구치의 매복 및 맹출 지연의 교정치험례

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.

과학적 창의성 신장을 위한 교사발문의 개발 및 적용 : 고등학교 지구과학 교과 중심으로

조규성,박미숙,정덕호 경북대학교 과학교육연구소 2009 科學敎育硏究誌 Vol.33 No.1

This study aimed at designing an effective earth science instruction which would help to improve students' scientific creativity using the questioning strategies. The developed questioning strategies were applied to 153 students of 10^(th)~11^(th) grades from March, 2004 to February, 2006. The Reaction Evaluation of Educational Program was used for students' reponses on these questioning strategies. And the Creativity Test developed by the Korea Institute for Aptitude Test was used for the changes of students' scientific creativity. The students responded that these questioning strategies improved students' scientific creativity, and those did not promoted interaction between the teacher and the students. After implementing these questioning strategies, students' analogical ability of language was evaluated the largest score among the 6 categories of scientific creativity. The survey about students' scientific creativity showed that there are meaningful differences between before and after implementing these questioning strategies : analogical ability of figure, analogical ability of language, reading comprehension ability. 본 연구는 고등학교 지구과학 수업을 중심으로 발문 전략을 수립하고 이를 적용함으로써 학생들의 과학적 창의성을 신장시키는데 그 목적이 있다. 2004년 3월에서 2006년 2월 기간까지 고등학교 학생 153명을 대상으로 하였다. 프로그램 반응 평가지를 통하여 발문전략에 관한 학생들의 반응을 살펴보았다. 또 한국적성검사연구소에서 제작한 창의성 검사를 통하여 학생들의 과학적 창의성 신장 여부를 분석하였다. 학생들은 발문전략을 적용한 교수학습 방법이 과학적 창의성을 신장에 도움이 되었다고 반응하였지만, 교사와 학생 사이의 상호작용 증진에는 효과가 없었다고 반응하였다. 발문 전략을 적용한 교수학습의 결과 언어유추능력 항목에서 가장 많은 향상을 보인 반면, 계획적 분석능력 항목에서 가장 작은 향상을 보였다. 대응표본 t검정 결과 도형유추능력, 언어유추능력, 문장이해력 항목에서 유의미한 차이를 보였다.

Cycloheximide가 Mouse肝臟의 인산염 分解酵素의 活性에 미치는 影響

趙賢熙,鄭鎬三,李圭植 漢陽大學校 環境科學硏究所 1985 環境科學論文集 Vol.6 No.-

Cycloheximide는 Streptomyces griseus에서 추출한 항진균성 항생제로 진균의 성장을 저해하는 물질로 알려져 왔으며 포유동물의 세포에서 ribonucleic acid와 단백질 합성을 저해한다고 생화학적 방법에 의하여 보고되었다. 최근에 이르러 cycloheximide의 투여로 간세포내 소기관인 조면내형질세망 및 Golgi complex의 손상에 의해서 단백질합성이 저해된다고 형태학적으로 연구 보고된 바 있다. 이와같은 cycloheximide의 투여로 간세포가 손상을 입어 단백질합성이 저해될 때 간세포내 인산염분해효소로 분포되어 있는 acid phosphatase와 adenosine triphosphatase 활성을 추구하였다. 실험동물로는 실험실에서 사육한 건강한 ICR계 체중 20∼30gm의 mouse를 사용하였으며 정상대조군과 cycloheximide 투여군으로 구분하고 실험군은 다시 cycloheximide 투여 후 6시간군, 12시간군, 24시산군 및 36시간군으로 나누었고 각군에 10마리씩 배정하였다. Cycloheximide는 mouse의 체중 ㎏당 4㎎ 되게 생리적 식염수에 용해하여 0.1㎖를 복강내에 투여후 6시간, 12시간, 24시간 및 36시간 후에 희생시켜 간장을 적출하고 10% neutral formalin에 고정한 다음 cryostat로 두께 15㎛ 되게 동결절편을 만들어 Gomori법으로 acid phosphatase활성과 Wachstein 및 Meisel법으로 adenosine triphosphatase 활성을 관찰한 결과 다음과 같은 결과를 얻었다. 1. Cycloheximide 투여후 6시간, 12시간군 및 24시간군의 mouse 간소엽에서 중심 정맥부로 부터acid phosphatase 활성이 증가되기 시작하여 36시간군에서는 간소엽 전역에 중등도 이상의 강한 활성이 관찰되었다. 2. Cycloheximide 투여후 24시간군에서 부터 간소엽의 중심 정맥부에 ATPase 활성이 감소되기시작하여 36시간 경과군에서는 간소엽 전역에 음성반응을 나타내었다. 상기와 같은 결과는 cycloheximide 투여로 간장의 acid phosphatase는 간장이 손상을 입을 때 그 활성이 보다 강한 양성반응을 보이고 adenosine triphosphatase는 역으로 활성이 약해진다고 사료된다. It has been knwon that cycloheximide, an antifungal antibiotics extracted from streptomyces griseus, inhibits the growth of fungus. It has been reported by several investigators that this drug inhibits ribouncleic acid activity and protein synthesis of the mammalian cell. Recently, several reporters indicated that the cycloheximide causes the damage of hepatocyte. The observations by electron microscopic, histochemical and histological studies revealed that cycloheximide inhibits the RNA and protein synthesis by the injury of rough endoplasmic reticulum and the desocciation of polysome in hepatocyte. This study attempted, on the activities of acid phosphatase adenosine triphosphatase, phosphatelysis-enzymes distributed in the hepatocytes in the mouse liver. Healthy albino mice(ICR strain) of 20gm±in body weight were used as experimental animals which were divided into the control and cycloheximide treated groups. The animals of the cycloheximide treated groups were administered cycloheximide. (dissolved in physiological saline sol., by intraperitoneal injection in a dose of) 4mg per kg of body weight in a volume of 0.1ml, intraperitoneally. The experimental animals were sacrificed at intervals of 6, 12, 24 and 36 hours after administration of cycloheximide, respectively. The liver specimens were fixed with 10% neutral formalin, the sections of 15㎛ thickness were stained by Gomori, Wachstein and Meisel`s method for the detection of acid phosphatase and adenosine triphosphatase activities. The results were obtained as follows; 1. Acid phosphatase activity was increased in the central zone of liver lobule at the 6 hour and 24 hour period of the cycloheximide treated group, moderately positive activity was showed in the liver lobule at the 36 hour period group. 2. Adenosine triphosphatase activity was decressed in the centrol zone of liver lobule at the 24 hour period of the cycloheximide treated group. Negative reactions were showed in the whole liver lobules at the 36 hour period group. Consequently, it is supposed that cycloheximide caused increase of liver acid phosphatase result from liver damage, while adenosine phosphtase activity of the liver was decreased.

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.

[논문]셀 제조시스템의 설계기법

조규갑,황호준 釜山大學校生産技術硏究所 2004 生産技術硏究所論文集 Vol.63 No.-

셀 제조시스템의 설계에서 가장 증요한 과제는 부품꾼과 그 부품군에 속하는 모든 부품을 가공하는 기계군을 형성하는 제조셀설계문제이다.본논문에서는부품 생산량, 기계 능력, 대안공정 계획 및 셀간부하평준화를 고려한 제조셀의 형성에 대한수리적모형을 고찰하고, 셀 설계 방법으로 유전자 알고리즘과 타부 탐색으로 구성된 하이브리드 접근방법을 개발하였고, 예제를 사용하여 제안된 방법의 타당성을 검증하였다.

면역억제제를 사용치 않은 동소성 간이식 실험견의 조직병리소견

조원현,최순옥,김인호,임태진,김성수,박준희,김우석,김현철,최규택,김진모,권건영 大韓移植學會 1994 Korean Journal of Transplantation Vol.8 No.1

투석 환자와 비투석 환자에서 고칼륨혈증의 원인 및 치료에 대한 고찰

조형도,최창렬,최성일,강태영,이동규,유준호,한상웅,김호중 대한신장학회 2001 대한신장학회잡지 Vol.20 No.5

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.