계량적 연구의 통계적 적정성 평가 : 경상대학교 석사학위 논문을 대상으로 In Cases of Master's Theses in Gyeongsang National University

서의훈,김진희 慶尙大學校 1999 論文集 Vol.38 No.-

We evaluated 141 master's theses, submitted to Gyeongsang National University during the period of 1994-1996, in terms of the adequacy of data collection and statistical analy-ses. The evaluation was conducted on the basis lists. We found several typical errors which was often made in the process of data collection and statistical analysis.

Limiting Distributions of the Standardized Random Variables for Natural Exponential Families with Power Variance Functions

Suh, Euy Hoon 慶尙大學校 기초과학연구소 1986 基礎科學硏究所報 Vol.2 No.-

이 논문에서는, 왜도(coefficient of skewness)가 어떤 극한 치에 접근해 갈때 NEF-PVF 계열의 표준화된 확률변수들에 대한 극한 분포들이 얻어졌다. In this paper, we obtain the limiting distributions of the standardized random variables for natural exponential families with power variance functions, when the coefficients of skewness tend to a certain limit.

Accuracy of Brownian Motion Approximation in Group Sequential Methods

Euy Hoon Suh 한국통계학회 1999 Communications for statistical applications and me Vol.6 No.1

오존농도의 예측 모형에 관한 연구 : 부산 신평동 지역

서의훈(Euy Hoon Suh),정연선(Yeon Seon Jeong) 한국자료분석학회 2001 Journal of the Korean Data Analysis Society Vol.3 No.3

본 연구에서는 부산 신평동 지역의 기후인자(풍속, 기온, 노점온도, 기압, 상대습도, 강우량, 일사량)와 대기오염물질(NO2, SO2, CO(단위: ppm), PM10(단위: ug/m3)) 자료를 사용하여, 1) 오존농도의 연도별, 월별, 시간별, 요일별 특성을 알아보고, 2) 오존농도와 기후인자, 대기오염물질 간의 관련성을 밝혔으며, 3) 오존고농도에 대한 1시간 후 예측모형을 연구하였다. This study was carried out to develop a statistical model for the surface ozone concentration. The one-hour average concentration of ozone(O3), nitrogen oxides(NO2), PM10, sulfur dioxide(SO2) and meteorological factors (i. e., wind velocity, temperature, dew point, pressure, relative humidity, precipitation, insolation intensity), during the period of 1998 to 2000, were analysed. First, we examined the patterns of the ozone concentration by monthly, hourly, annually and weekly. Secondly, in order to find out the degree of association among the ozone concentration, air pollutants(CO, NO2, PM10, SO2), and meteorological factors(wind velocity, temperature, dew point, pressure, relative humidity, precipitation, insolation intensity), we used the statistical methods of correlation analysis, analysis of variances. Finally, we examined the 1 hour prediction models of the ozone concentration using the Logistic regression analysis and decision tree analysis.

범죄율에 따른 도시의 군집화

서의훈(Euy Hoon Suh),양호숙(Ho Sook Yang) 한국자료분석학회 2000 Journal of the Korean Data Analysis Society Vol.2 No.3

이 논문은 범죄발생률과 지역 특성간의 관계를 파악하는 데 그 목적이 있다. 다섯 가지 범죄발생률에 따라 전체 도시를 분류하고 분류된 각각의 군집에 대한 지역적 특성을 살펴보았다. 범죄발생률이 다른 지역에 비해 매우 높은 동두천, 오산, 과천, 여천을 제외한 나머지 도시는 4개의 군집으로 분류되었다. 범죄발생률이 높은 지역은 이혼률이 높고 전화보급수와 유흥업소 수가 많으며 고령자비, 저소득자비, 학교수가 작은 것으로 나타났다. This study aims to explore the relationship between the regional characteristics and crime rates. We classify residential areas by the crime rates and find some distinguished characteristics in classified residential areas. All cities are classified into four clusters, except the four cities with very high crime rates(Dongduchun, Osan, Kwachun and Yeuchun). The cluster with high crime rates is characterized by high divorce rate and many pleasure resorts.

부산 , 마산 , 진주지역 피부관리 고객의 사회인구학적 특성과 피부건강에 관한 비교 연구

서의훈,하명희 한국미용학회 2000 한국미용학회지 Vol.6 No.2

In this paper, we sampled 881 clients who visited the skin care shops located in Pusan, Masan and Chinju city during the period between July 26 and August 7, 1999. The aim of this study is, utilizing the survey data, to do a comparative study among three cities about (1) the socio-demographic characteristics(e.g., age, educational level, marital status, occupation, etc.) of the clients. (2) the effects of several factors on the facial health condition of women. The factors include: 1) childbirths, abortions, regularity of a menstrual period as physiological factors; 2) the degree of stress and life satisfaction in the family as psychological factors; 3) regularity of meal-taking, unbalanced diet, favorite foods, smoking and drinking as food-taking habits; 4) the frequency and duration of skin care.

진주시 피부관리 고객의 피부건강상태에 관한 통계적 연구

서의훈,하명희 한국미용학회 1999 한국미용학회지 Vol.5 No.2

In this paper, we sampled 260 clients who visited the skin care shops located in Chinju city during the period between July 26 and August 7, 1999. The aim of this study is, utilizing the survey data, (1) to investigate the socio-demographic characteristics(age, educational level, marital status, occupation, etc.) of the clients. (2) to make statistical tests about the effects of some factors on the facial health condition of women. The factors include: 1) childbirths, abortions, regularity of a menstrual period as physiological factors; 2) the degree of stress and life satisfaction in the family as psychological factors; 3) regularity of meal-taking, unbalanced diet, favorite foods, smoking and drinking as food-taking habits; 4) the frequency and duration of skin care.

좌심실 벽운동의 정략적 분석

김영훈,서순규,박정의 대한내과학회 1986 대한내과학회지 Vol.30 No.4

The LV regional wall motion was quantitated by two dimensional echocardiography in l6 nor- mal persons, 7 patients with anterior wall myocardial infarction(M.I.), 6 patients with inferior wall M.I. and 8 patients with dilated cardiomyopathy(CMP). The short axis view of LV was taken at the level of upper papillary muscle and the cross- sectional area was devided into 8 octants starting from the mid-septum. The percent area contraction of each octant was caculated by measuring the area of each octant at enddiastole and endsy-stole. The area contraction of LV was also measured at the four chamber view. In normal persons, the LV wall contracts by almost equal degree througout its circumferences towards the center(45-55,). In patients with anterior M.I. the regional wall contrantion was decreased in the anterior and anteroseptal areas and in the patients with inferior wall M.I. the regional wall contraction was decreased in the septum, posterior and posterolateral walls. In inferior wall M.I. the lateral and anterior walls showed exaggerated contraction. In patients with dilated CMP, the regionaI wall contraction was decreased throughout LV circumference and especially in the septal wall, Copmared with quallitative observation, the quantitative assay offers more objective way of observing regiona1 wall motion abnormalities. The quantitative method is also useful in observing patient's progress and the response to drug intervention such as nitroglycerin.

Designs for Improving Mean Response

Park, Joong-Yang,Suh, Euy-Hoon,Ahn, Sung-Jin The Korean Society for Quality Management 1995 품질경영학회지 Vol.23 No.3

Estimation of each of mean response, difference between mean responses and derivatives of the response function is a possible objective of a response surface design. These objectives are to be achieved simultaneously when an experiment is designed to improve mean response. For the situations where departure from the assumed model is suspected, first and second order designs for improving mean response are obtained by combining minimum bias designs for the individual design objectives. D- and A-optimalities are used for selecting specific second order designs. The results are applied to central composite designs.

Evaluation of SPECT Analysis in Patients with Transient Global Amnesia

Choe, Bo-Young,Kim, Euy-Neyng,Chung, Yong-An,Sohn, Hyung-Sun,Kim, Sung-Hoon,Chung, Soo-Kyo,Lee, Hyoung-Koo,Suh, Tae-Suk Korean Magnetic Resonance Society 2002 Journal of the Korean Magnetic Resonance Society Vol.6 No.1

Objectives: This study investigated alterations in regional cerebral blood flow (rCBF) in patients with transient global amnesia (TGA) using statistical parametric mapping 99 (SPM99). Methods: Noninvasive rCBF measurements using 99mTc-ethyl cysteinate dimer (ECD) SPECT were performed on 8 patients with TGA who have ongoing symptoms and 17 age matched controls. The relative rCBF maps in patients with TGA and controls were compared. Results: In patients with TGA, significant decreased rCBF was found along the L superior temporal extending to L parietal region of the brain and L thalamus. There were areas of increased rCBF in the R temporal, R frontal region and R thalamus. Conclusion: We could demonstrate decreased perfusion in left cerebral hemisphere and increased perfusion in right cerebral hemisphere in patients with TGA using SPM99. The imbalanced change of rCBF between bilateral cerebral hemisphere in patients with TGA might suggest that imbalanced neuronal activity between the bilateral hemispheres may have strong relationship to the pathogenesis of the TGA. For quantitative SPECT analysis in TGA patients, we recommend SPM99 rather than the ROI method because of its definitive advantages.