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불균일 Winkler 탄성 기초위에 놓인 보의 자유진동과 안정성
최봉문,윤영식,윤충섭,류봉조 建陽大學校 1999 建陽論叢 Vol.- No.7
The paper deals with free vibration and stability analysis of a uniform Euler-Bernoulli beam resting on non-uniform Winkler elastic foundation. governing equations for the system are derived by using energy expressions. Solutions are approximately and numerically calculated by means of the finite element formulation. The solutions in the present paper are compared with other available ones without axial force. Finally, stability for cantilever and simply supported beams under a pure axial force is investigated.
일단계 GM-추정량을 이용한 두 회귀직선의 평행성 검정
심봉섭 안양대학교 자연과학연구소 1998 自然科學硏究 Vol.5 No.1
본 논문에서는 최대붕괴점과 유계영양함수를 갖는 일단계 GM-추정량을 이용하여 두 회귀직선의 평행성을 검정하는 로버스트 검정법을 제안하였다. 제안된 검정법은 Song et al.(1994,b)에 의하여 제안된 최소절단제곱 추정량을 초기치로 하는 일단계 GM-추정량에 근거하고 있으며, 모의실험과 예를 통하여 기존의 방법들보다 유의수준의 안정성과 검정력의 측면에서 매우 우수한 결과를 얻었다. For the problem of testing the parallelism of two regression lines, a robust procedure is proposed and examined. The proposed test statistic is based on the one step GM-estimators of slope parameters proposed by Song et al.(1994,b). These GM-estimators used the Leasst Trimmed Squares estimates as an initial values so as to obtain high breakdown point. Through a smll-sample Monte Carlo simulation the empirical levels and powers of proposed test are compared with other tests under various error distributions.
Vinyl腐蝕法에 依한 在來山羊 脾柱靜脈의 區域的 走行에 關한 硏究
金鍾涉,金武剛,金容根,元鳳來 慶尙大學校 1972 論文集 Vol.11 No.-
The studies were conducted to observe the segmental running of splenic trabecular veins, employing the vinylite corrosion technique in sixty adult Korean goats, and the following results were obteined: 1. The splenic trabecular veins of the goat were collected into 5 chief Rami of the splenic veins(called Rr. superior, media et inferior, Vv. polares superior et inferior), and the splenic parenchyma was divided into 3-8 intralienal venous segments by the course of trabecular veins. 2. Each intralienal venous segment was divided into 2-4 minute segments, therefore 7-22 minute segments were observed in the spleen. 3. The anastomoses were found between segments or minute segments. 4. The splenic arterial and venous system of the Korean goat took a individual course in the splenic parenchyma respectively.
신봉섭 안양대학교 자연과학연구소 1997 自然科學硏究 Vol.4 No.-
본 논문에서는 최근 활발하게 연구되고 있는 컴퓨터를 이용한 보조학습법들에 대한 통계학 분야의 국내· 외 연구동향을 살펴보았다. 또한 미국을 중심으로 급속도로 전개되고 있는 Mathematica를 이용한 보조학습법의 상황을 알아보고 통계학의 이론교육에 이를 활용하는 몇 가지 예제들을 소개하였다. 이들 예제들은 Mathematica의 장점인 애니메이션을 포함한 강력한 그래픽 기능, 기호연산 (symbolic computation) 및 프로그래밍 능력들을 활용한 것들로써 학습자에게 수업에 대한 흥미를 불러일으키고 학습동기를 고취하며 개념의 이해나 학습한 이론의 확인 등에 실질적인 도움을 줄 수 있을 것이라 기대된다.
Consistency of The Kernel Estimators for Testing The Parallelism of Regression Lines
신봉섭 대신대학교 자연과학연구소 1994 自然科學硏究 Vol.1 No.-
송문섭외 3인 (1993)은 순서대립가설에 대하여 k개의 회귀직선이 평행한가를 검정하는 검정법을 제안하였다. 그들이 제안한 검정법은 Adichie (1976)의 점수통계량(scores test) 을 수정 한 것으로, 기울기의 Hodges-Lehmann 형태 추정량의 선형결합과 L_1-노름 추정량의 선형결합이다. 또한 검정통계량의 극한분산이 모집단에 의존하기 때문에 혼합잔차들을 이용한 커넬(kernel)추정을 사용하였다. 본 논문에서는 송문섭외 3인이 이용한 커넬추정량들이 각 직선에서의 표본수가 동일하다는 조건하에서 일치추정량임을 증명하였다. For the problem of testing the parallelism of several regression lines against ordered alternatives, Song et al. (1993) proposed the modified tests of Adichie (1976)'s scores test. Their tests are linear combinations of the robust estimators of slopes such as the Hodges-Lehmann type estimators and the L_1-norm estimators. Since the asymptotic variances of their test statistics include the quantities which depend on the underlying error distribution, they used the kernel esimates of these quantities. In this thesis, the corresponding kernel estimators are proved to be consistent.
폐결핵치료 중인 환자에서 Rifampicin에 의해 유발된 위막성 대장염 2예
김봉진,권균홍,임창섭,김자영,홍정범,옥미선,배용목,김지연 고신대학교의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.4
Pseudomembranous colitis (PMC) is a disease caused by Clostridium difficile proliferation. The causative drugs are clindamycin, third-generation cephalosporins, flouroquinolone and so on. Rifampicin has been reported as a cause of PMC in the 1980s, and the frequency of PMC is increasing because rifampicin is a first line drug for anti-tuberculosis therapy. Two patients were recently admitted to our hospital due to watery diarrhea for 1 month and they were diagnosed with PMC by sigmoidoscopy. Their onset age were 74, 72 years old and latent period of symptoms were 60, 129 days, respectively. In one case, the patient displayed coexisting hypertension and diabetes. The clinical symptoms improved after discontinuing the rifampicin and then administering oral metronidazole. We report here on two cases presumed to be rifampicin-induced PMC.
신봉섭 안양대학교 1996 논문집 Vol.16 No.-
In this thesis, a weighted Jonckheere-type test statistic is proposed and examined for the problem of testing the parallelism of several regression lines against ordered alternatives. The proposed test statistic is a modified version of Lee(1993). The motivation of modifying Lee(1993)'s test is discussed and the asymptotic properties of the proposed test statistic are derived. In Section Ⅱ, Lee(1993)'s test is briefly reviewed. Section Ⅲ deals with the proposed test statistic and its aymptotic properties.
신봉섭,권희용 안양대학교 자연과학연구소 1996 自然科學硏究 Vol.3 No.-
본 논문에서는 통계적 모의실험에서 자주 사용되는 여러 확률분포에 따르는 난수들의 생성기를 구현하고, 제작된 난수생성기가 실제 모의실험에서 유용하게 활용될 수 있음을 보였다. 구현된 난수생성기는 FORTRAN의 함수부프로그램이나 SUBROUTINE으로 제작되어 라이브러리로 구성한 것이다. 따라서 사용자가 간단한 link-과정을 통해 쉽게 활용할 수 있다. 또한 구현된 라이브러리의 각 SUBROUTINE들은 여러 가지 통계적인 검증을 거쳐 안정성을 확인하였고, 실제 모의실험을 통해서도 안정성에 문제가 없음을 볼 수 있다. In this thesis, a library of random number generators for various statistical distributions which often used in stochastic simulation is implemented and applied to the real situation of statistical simulation. The implemented library contains FORTRAN routines which are in the form of FUNCTION or SUBROUTINE, and thus user can simply use this library by linking it. Each routine of the implimented library was tested by the various procedures and proved to be very stable. This stability was also obtained through the real simulation.
농촌지역 초등학교 유휴시설의 활용방안에 관한 연구 : 해남군 초등학교를 중심으로 Focused on the Elementary School in Hae-Nam
오재섭,이봉수,박향용,유창균,조용준 朝鮮大學校 建設技術硏究所 1998 建設技術硏究 Vol.18 No.2
Recently, number of elementary school students in the rural area have decreased due to move of population to the diminishment of birth population, the generation of idle facilities and even the trend of abolition of school presented problems. This paper was a study of the use plans and generation pattern of idle facilities in present school. And the targeted schools of this study were elementary schools located at Hae-Nam Province in Chun-Nam. The results are as follows : 1) While the number of the elementary school is continuosuly decreased up to now since 1980, the number of branch schools and closed schools is increasing and while general class is decreased continuously, multiple classes are increasing and so the utilization of idle facilities will be continued. 2) The utilization of idle facilities is most frequent in the use of school curriculm(67%), followed by the use of club activities and welfare facilities, but the use by residents is minimum. In the problems in using idle facilities, the lack of finance is most(68%), followed by the lack of illustrative data and technical problems and in the effects of using idle facilities, extra curriculum activities are best and followed by the use of local community and school curriculum. 3) In the most required facilities in using idle facilities, gymnasium and service area are highest and followed by laboratory, learning data room and library and in the common facilities with local residents, swimming pool is most frequent and followed by library.