• 대기
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• 제17권3호
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• pp.255-268
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• 2007

This study generated and evaluated the high resolution (5 km) gridded data of monthly mean, maximum and minimum temperature from 2002 to 2005 over South Korea using a modified PRISM(Parameter-elevation Regressions on Independent Slopes Model: K-PRISM) developed by Daly et al. (2003). The performance of K-PRISM was evaluated by qualitative and quantitative ways using the observations and gridded data derived by inverse distance weighting (IDW) and hypsometric methods (HYPS). For the generation of high resolution gridded data, geographic informations over South Korea, such as the digital elevation, topographic facet and coastal proximity, are derived from the 1 km digital elevation data. The spatial patterns of temperature derived by K-PRISM were more closely linked to topography and coastal proximity than those by IDW. The K-PRISM performed much better than IDW for all months and temperatures, but it was equal to or slightly better than the HYPS. And the performances of K-PRISM were better in the minimum and mean temperature (winter) than the in maximum temperature (summer).

• 응용통계연구
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• 제24권3호
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• pp.547-557
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• 2011

본 논문에서는 우리나라 지방국도의 특정지점에서 수집된 교통량 자료를 이용하여 일일 시간교통량 추정모형을 개발하였다. 본 연구의 특징은 일일 24시의 시간변수를 원형변수로 취급하고, 지방부 교통량 자료의 특성상 출퇴근 시간에 교통량이 집중되는 이봉형의 현상을 감안하여 원형분포의 혼합모형을 고려하였다. 또한 시간대별 교통량의 분포가 요일에 따라 유사한 패턴을 가지는 데 착안하여 요일별 모형을 제시하였다. 혼합원형분포의 모수추정에는 EM알고리즘이 사용되었으며, 모형의 성능비교를 위해 가변수 회귀모형과의 비교를 실시하였다. 제시된 요일별 지방국도의 시간교통량 적합모형은 계측기의 손상 등으로 인한 교통량 결측자료의 추정에 효과적으로 사용될 수 있다.

• The International Journal of Costume Culture
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• 제3권1호
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• pp.30-40
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• 2000

The purpose of this research was to device thermal comfort model for radiation power plant workers in protective clothing. Three fabrics commonly used in protective workwear were made into coveralls of identical design and were evaluated by adult healthy males in four simulated work environment. It was investigated between the physiological response and subjects comfort according to environmental variance and clothing types. The of simulated work enviro mensent was controlled under four different humidity and temperature of each type. (Temperature 20±1℃, RH 40∼70%±5%, Temperature 30±1℃, RH 40∼70%±5%) An index of physiological response was connected with the thermal comfort designed. Mean skin temperature, skim temperature, Axillasy temperature ear canal temperature, clothing climate, total sweat, blood pressure, and R-R interval were be evaluated. Skin temperature difference ocurring during exercise and rest were significant only with respect to time and regions of the body, This despite physical differences in the three coveralls, particulary mass statistically experiment. Also, an index of subject wearing sensation was designed for thermal comfort after investigation determined the kind of clothes and the type of environment. As a result of this research, two types of multiple regressions was deviced to estimate thermal comfort of the protective clothing.

• 가정과삶의질연구
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• 제30권3호
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• pp.135-149
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• 2012

The aim of this study is to examine how perceived family-friendliness of community influences parents' efficacy and stress. This study asks three research questions: 1) what is the geographical boundary of community perceived by parents with pre-school children, 2) how the components of family-friendly community affect parents' perception on family-friendliness of their communities, 3) how the perceived family-friendliness of their community affects parenting efficacy and stress. Drawing on a sample of 628 parents(318 males, 310 females) who had at least one pre-school child, we analyze the data by frequencies, means and hierarchical regressions. The major findings are as follows. While the responses on the geographical boundary of community varies the most frequent response is 'Gu'. Both knowledge on family service infra and community social capital, which consist of family-friendly community, affect the perception of family-friendliness of community. The perceived family-friendliness of community is positively associated with parenting efficacy and negatively associated with parenting stress. The effect of the perceived family-friendliness of community on parenting efficacy disappears when social capital is included in the model. There is no such pattern in the association between the perceived family-friendliness of community and parenting stress.

• The Journal of Asian Finance, Economics and Business
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• 제7권4호
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• pp.133-143
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• 2020

The paper investigates the factors affecting the profitability of commercial banks in Asian developing countries, including Vietnam, Malaysia and Thailand. We use panel data of four entities; ten banks in Vietnam, eight banks in Malaysia, nine banks in Thailand and all 27 commercial banks from the period 2012 to 2016. Particularly, Return on Asset, Return on Equity and TOBINQ are defined as profitability indicators, which are impacted by three main types of independent variables, namely bank-specifics, which include CAR, NPL, Cost to income, Liquidity ratio and Bank size, industry-specific variable-concentration HHI and macroeconomic-specific variables, which consist of GDP growth and Inflation. Using panel data regressions, the paper identifies several similarities and differences among empirical results on the models of four entities, each of three countries and the overall sample. The most outstanding similarity is that all entities record the significantly negative relationship between operational risk and banking profitability. Likewise, the significantly negative influence of bank size to profitability is found on models of Vietnam and Thailand and no significant effect on the model of Malaysia. Meanwhile, the most controversial result comes up with the negative relationship between CAR and profitability indicators as well as the positive association between credit risk and banking profitability.

• 한국콘텐츠학회논문지
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• 제10권12호
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• pp.342-351
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• 2010

본 연구의 목적은 아웃소싱을 통한 정보시스템 개발에서 고객사와 벤더 간에 발생하는 갈등의 주요 원인을 규명하는 것이다. 정보시스템 아웃소싱과 시스템 개발, 갈등에 관한 선행연구를 기반으로 연구모형을 설정하였으며, 고객사-벤더 쌍으로 이루어진 프로젝트 팀 단위의 설문 214개를 대상으로 PASW 18.0 통계패키지를 이용하여 실증연구를 수행하였다. 다중회귀분석을 이용한 통계분석결과, 계약의 구체성, 요구사항 불변성, 목표간 일치, 고객사의 지식이 갈등을 감소시키는 것으로 나타났다. 본 연구결과는 아웃소싱 프로젝트의 성과 향상을 위한 다양한 시사점을 제공할 것이다.

• The Journal of Asian Finance, Economics and Business
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• 제7권10호
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• pp.433-442
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• 2020

This study investigates the impact of fiscal transfer, specifically the Village Fund Transfer, on rural income inequality and rural poverty. Studies on fiscal transfer offers contrasting outcomes, some argues that fiscal transfer suppresses wealth disparity, while others argue that it tends to widen disparity. This study employs descriptive analysis in estimating the elasticity of income inequality and poverty rate before and after the Village Fund Transfer. It develops multiple regressions model on panel datasets of 33 provinces in Indonesia before and after the implementation of Village Fund Transfer. This study suggests that the elasticity of income inequality is higher after the implementation of village fund transfer. Rural poverty tends to decline annually, however, the elasticity changes is lower after the implementation of village fund transfer. Furthermore, this study suggests that village fund transfer is insignificant in coping with the issue of income inequality, while education and the level of labor productivity of agricultural sector appears to be the determinant factor in tackling the issue of income inequality in the rural areas. This study further reveals the significance of village fund transfer in suppressing the rural poverty rate. This study also highlights the significance of human resources quality and agricultural sector in reducing poverty rate in rural areas.

• 복식문화연구
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• 제14권1호
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• pp.40-47
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• 2006

Three-dimensional body scanners were used for years in the clothing manufacturing fields. The 3D body surface provide essential data to draft patterns for mass customization, virtual fit model, and computerized patternmaking systems. This research proposed the methods of drafting patterns for men's jacket by using three dimensional body scan data. Eight male subjects were scanned, the surface data was flattened. The differentials of the flattened body surface and the jacket draft were measured, and analyzed the regressions. To verify the fit of the patterns, the jacket was constructed by the regression formulae and tested by experts. The fit of the jacket were significantly improved rather than a ready-made suit especially the shoulder areas. This means that the methods that we proposed were good to improve the fit of the garments and could be used effectively to implement mass customization strategies in the apparel retail industry.

• Asia Pacific Journal of Business Review
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• 제1권1호
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• pp.1-22
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• 2016

The prediction of prices of agricultural products in the agriculture IT sector plays a significant role in the economic life of consumers and anyone engaged in agricultural business, and as these prices fluctuate more often than do other prices, the prediction of these prices holds a great deal of research promise. For this reason, academic literature has provided studies on the factors influencing the prices of agricultural products and the price index. However, as these factors vary, they are difficult to predict, resulting in the challenge of acquiring quantitative data. China is one example of a country without a reliable prediction system for prices of agricultural products. Fortunately, disclosed heterogeneous data can be found on the Internet, which allows for the effective collection of factors related to the prediction of these product prices through the use of text mining. The data provided online is valuable in that they reflect the opinions of the general public in real-time. Accordingly, this study aims to use heterogeneous data from the Internet and suggest a model predicting the prices of agricultural products before functional analyses. Toward this end, data analyses were conducted on the Chinese agricultural products market, one of the largest markets in the world.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2012년도 학술발표회
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• pp.931-931
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• 2012

제주지역의 강수자료는 최근에 이르러 69개 지점으로 증가하여 비교적 밀도있는 강수관측이 진행되고 있다. 그러나 기존의 자료 증설 내역과 이설 등으로 인해 과거로부터 현재에 이르는 자료를 기반으로 면적강수량을 산정할 경우 다소 어려움이 있다. 본 연구에서는 1992년부터 2010년까지의 강수자료를 바탕으로 관측소 개수를 기반으로 기간을 구분하여 각 기간별로 공간보간기법별로 면적강수량을 산정하고 이를 비교하였다. 사용한 공간보간기법은 PRISM(Parameter-elevation Regressions on Independent Slopes Model)기법과 티센(Thiessen)법으로 19년간의 일강수량 자료를 바탕으로 각각 면적강수량을 산정했다. PRISM기법을 이용한 경우는 고도, 관측점으로부터의 거리, 방향성 분석 및 해안가중치를 고려하여 계산하였고, 티센법의 경우는 기간별로 상이한 티센망을 구축하여 산정하였다. 지점 관측강수량에서 고도가 증가할수록 강수량이 증가하는 제주형 산악효과가 나타났으며 이는 보간기법에 의한 결과에서도 동일하게 나타나는 것으로 확인되었다. 또한 고도에 따른 상관성은 PRISM기법에 의한 결과에서 더 높게 산정되는 것으로 나타났다. 기법별 산정된 면적강수량은 근소한 차이를 보였으며 PRISM기법에 의한 값이 티센법에 비해 약 1%정도 크게 계산되었다.