• 한국지리정보학회지
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• 제24권4호
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• pp.26-40
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• 2021

본 연구는 장애인, 노인, 임산부 등 사회적 약자들이 체감할 수 있는 무장애도시를 구현하기 위한 정책의 개선방안 및 방향을 제시하고자 한다. 주택, 판매·업무시설 등 시민들의 일상생활과 밀접한 시설의 이용 만족도가 시민의 행복감에 미치는 영향을 파악하기 위하여 일반인과 사회적 약자를 대상으로 진행한 설문조사 결과를 바탕으로 상관분석과 T-test를 진행하였다. 연구 결과 첫째, 사회적 약자가 일반인보다 더 높은 비율로 도시생활에서 불편·장벽을 경험하고 있었으며, 사회적 약자의 불편·장벽 경험 정도와 도시생활의 행복감은 음(-)의 상관관계를 보였다. 둘째, 시민의 생활·복지·여가환경부문별 이용만족도 차이를 분석한 결과, 생활환경부문에서 일반인과 사회적 약자 간 만족도가 유의미한 차이를 보였으며 사회적 약자의 경우 생활환경부문의 만족도가 행복감에 가장 큰 영향을 미치는 것으로 나타났다. 위와 같은 연구결과를 바탕으로 사회적 약자들의 장애물 없는 도시생활을 지원하기 위한 대표적인 정책 중 하나인 BF 인증시설 인증현황을 살펴본 결과 복지환경부문의 시설이 주로 공급되고 있었다. 또한 BF 인증시설이 실수요자 중심으로 공급되고 있는지 파악하기 위해 ArcGIS를 활용하여 분석한 결과 사회적 약자(고령인구, 어린이, 유아)의 공간적 분포와 BF 인증시설의 분포는 다소 일치하나 도심지역에 집중적으로 공급되는 것을 확인하였다.

• Communications for Statistical Applications and Methods
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• 제19권2호
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• pp.267-276
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• 2012

Bagai et al. (1989) proposed a distribution-free test for stochastic ordering in the competing risk model, and recently Murakami (2009) utilized a standard saddlepoint approximation to provide tail probabilities for the Bagai statistic under finite sample sizes. In the present paper, we consider the Gaussian-polynomial approximation proposed in Ha and Provost (2007) and compare it to the saddlepoint approximation in terms of approximating the percentiles of the Bagai statistic. We make numerical comparisons of these approximations for moderate sample sizes as was done in Murakami (2009). From the numerical results, it was observed that the Gaussianpolynomial approximation provides comparable or greater accuracy in the tail probabilities than the saddlepoint approximation. Unlike saddlepoint approximation, the Gaussian-polynomial approximation provides a simple explicit representation of the approximated density function. We also discuss the details of computations.

• 한국전산유체공학회지
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• 제1권1호
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• pp.134-141
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• 1996

Wall interference is one of the major obstacles to increase the model size and data accuracy. There have been many treatments for wall interference including interference correction and adaptive wall test section. Recently, two-flexible-walled adaptive wall test section is concluded adequate for three-dimensional test. But proper location of target line and pressure holes are critical to its success. In this study, a new adaptive algorithm which dispenses target line and dependency of pressure hole distribution is suggested. The wind tunnel and free air tests are simulated by the numerical computation of Euler equations. The optimum wall shape is achieved by two variable optimization which is composed of two base streamlines. The wall interference is reduced well in the optimized result which is not sensitive to the base streamlines.

• Communications for Statistical Applications and Methods
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• 제16권1호
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• pp.75-83
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• 2009

단순선형 회귀모형의 기울기에 대한 평행성 검정법을 제안하였다. 세 군 이상에서 기울기에 대하여 Tukey (1953)가 제안한 HSD방법을 이용한 모수적 검정법과 Kruskal-Wallis (1952) 검정법을 이용한 비모수적 검정법을 각각 제안하였다. 또한 모의실험을 통하여 기존의 검정법과 제안한 검정법의 검정력을 비교하였다.

• 지질공학
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• 제24권3호
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• pp.363-372
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• 2014

화강암은 미세균열 및 광물입자의 배열형태에 따라 직교하는 세 방향(rift, grain, hardway)의 이방성을 내포한다. 본 연구에서는 포천화강암의 미세균열 분포특성에 따른 이방성이 탄성파에 미치는 영향을 확인하기 위해서 자유단공진시험을 수행하였으며, 비구속압축파, 전단파, 포아송비, 재료 감쇠비등의 공진특성 등을 파악하였다. 결과적으로, 미세균열 분포 특성에 따라 비구속압축파와 전단파가 서로 다른 경향을 보여주고 있음을 확인하였다. 또한, 포아송비와 재료감쇄비도 세 개의 결방향에 따라 이방성 특성이 나타남을 확인하였다.

• The Journal of Asian Finance, Economics and Business
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• 제5권4호
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• pp.35-44
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• 2018

The study is aimed at investigating the main factors that affect the interest rate yields, in the long-term. In addition, the study surveys the theories and literature relating to the determinants of interest rate. The importance of which is essential not only for governments, but also for banks and corporate financial risk management decisions, including risk exposures in banks and capital markets. Interest rate influences corporate profit as well as growth. For this purpose, the study examines the impact of budget deficit, risk-free rate, capital inflows, money supply and business cycles on real interest rate in Jordan. These factors are based upon well-established theories and straightforward practical view as interest rate determinants. Using data for (1990-2015), the study employed Johansen's co-integrating test, which takes into consideration the long-term unsynchronized relationships. The data is tested for normality, symmetric correlations, covariance diagonal and unit root. The results show that the government budget deficit, short-term risk-free interest rate, capital inflows, money supply and business cycle are long-term determinants of the real interest rate in Jordan. The coefficients of government budget deficit, short-term risk-free rate, money supply and business cycle all are inversely affecting the real interest rate, while capital inflows has a positive impact on the real interest rate.

• 설비공학논문집
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• 제8권2호
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• pp.219-229
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• 1996

In the free molecular flow range, the pumping performance of a turbomolecular pump has been predicted by calculation of the transmission probability employing the integral method and the test particle Monte-Carlo method. The velocities of molecules incident upon a moving blade are given by the random numbers, which are sampled from the Maxwell molecular velocity distribution function. The present results agree quantitatively with the previous known numerical results. For a multi-stage pump, the velocity profile of molecules between two blade rows is not Maxwell distribution. In this case, the Monte-Carlo method is employed to calculate the overall transmission probability for the entire set of blade rows. When the results of the approximate method combining the single stage solutions are compared with those of the Monte-Carlo method for the pump having six rows at C=0.6, the approximate method overestimates as much as 36% in the maximum compression ratio and 19% in the maximum pumping speed than does the Mote-Carlo method.

• 한국화재소방학회논문지
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• 제5권1호
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• pp.23-28
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• 1991

This paper is concerned with the numerical analysis of the temperature of steel columns when they are exposed to flame of a fire temperature curve in order to test resistivity against the fire. In this stuer a 2-dimensional heat conduction FDM was developed to predict the temperature dustribution of steel column under various construction conditions. A proposal to estimate the influence of free water content in the insulation also made.

• Journal of the Korean Statistical Society
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• 제9권2호
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• pp.181-193
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• 1980

A class of nonparametric estimators of the ratio of scale parameters is proposed. The estimators are based on the distribution-free rank-like test suggested by Fligner and Killeen (1976). An explicit form of the estimator is the median of the ratios of absolute deviations from the combined sample median. A small-sample Monte Carlo study shows that the proposed estimator is more efficient than the Bhattacharyya (1977) estimator. The proposed estimator is is reasonably insensitive to small failures in the assumption of equal medians. A modified estimator is also considered when the meidans are unequal.

• Journal of the Korean Statistical Society
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• 제5권1호
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• pp.61-77
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• 1976

The first aim of this study is to provide QC engineers with the right method of cipher of SQC-charts and to help learn how to analyse SQC-charts. The second aim is to maximize the utility of SQC-charts by introducing some Distribution-free Statistical Tests which is experted to provide some methods of test for null hypothese $(H_0)$ concerning the randomness of manufacturing processes.