• Proceedings of the Korean Operations and Management Science Society Conference
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• 2000.04a
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• pp.433-436
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• 2000

경제가 고도로 성장하던 단계에서는 기업은 사업규모도 크지 않고, 경쟁환경도 치열하지 않았을 뿐 아니라 내·외부적인 환경도 안정적이기 때문에 양적 확대에만 집중하더라도 그것이 기업가치를 크게 하는 역할을 할 수 있었다. 그러나 내·외부적인 무수한 환경변화와 경쟁격화로 인하여 수익성의 악화가 반복되는 현실에서는 종전과 같은 경영사고나 전략으로는 새로운 환경에서 살아남을 수 없을 것이다. 따라서 본 논문은 기업들의 환경변화에 따른 대처능력과 의사결정을 원활히 하기 위해 기존의 단순 수치의 변환에 의해서 결과를 도출하는 회계 시뮬레이션에서 벗어나 회귀분석과 신뢰구간을 사용하여 기업의 의사결정에 있어서 보다 기업의 현실에 근접한 데이터를 추출하여 의사결정의 원활화를 도모하고자 하였으며 최종 시뮬레이션 결과를 EVA 에 둠으로써 기업의 수익성, 자본효율도 등의 기업가치를 여러 방면으로 추정할 수 있도록 하였다.

• Journal of the Korean Society of Food Science and Nutrition
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• v.37 no.11
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• pp.1435-1442
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• 2008

The purpose of this study was to identify the influence of consumption value on healthy functional food choice. Also, this study explored the role of health motivation, health concern, and food involvement as a moderating variable in the relationship between consumption value and healthy functional food choice. A total of 281 responses were collected using on-site survey (response rate 96.0%) from college students in Daegu, Gyeoungbuk Province. The questionnaire contained questions on consumption value, health motivation, health concern, food involvement, and purchasing intention of healthy functional food. The respondents rated the items using a 5-point scale from 1 (strongly disagree) to 5 (strongly agree). According to the confirmatory factor analysis, item evaluating using factor loading resulted in the retention of 25 consumption value items loading on seven factors, four health motivation items loading one factor, six health concern items loading on one factor, and four food involvement items loading on one factor with an internal consistency. Results of stepwise regression found that social value-I, emotional, functional, epistemic, and conditional values among consumption value determined the purchasing intention of healthy functional food. Results of hierarchical regression showed that health concern had a positive effect on the relationship between social value-I and purchasing intention of healthy functional food.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2004.04a
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• pp.362-365
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• 2004

토양오염의 확산과정중의 서로 다른 지질적 기반위에 놓인 토양에 대한 침투특성과 4단계 이상의 장력을 적용하여 침투율을 산정하였다. 장력과 침투율과는 지수함수로 비선형 회귀시켜서 산정하였으며, 단지 몇단계의 장력만으로 구하여진 값보다 더 많은 불포화대수리특성과 신뢰성있는 포화수리전도도를 제공할 수 있을 것이다. 구하여진 침투율은 토양분석결과를 비교했을 경우 점토함량이 적은 시료에서 적게나오는 경향이 있고, sand가 많은 토양의 경우 높게 산정되었다.

• Journal of Korea Water Resources Association
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• v.43 no.12
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• pp.1083-1091
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• 2010

Distributed hydrologic models typically require spatial estimates of precipitation interpolated from sparsely located observational points to the specific grid points. However, widely used estimation schemes fail to describe the realistic variability of daily precipitation field. We compare and contrast the performance of statistical methods for the spatial estimation of precipitation in two hydrologically different basins, and propose a two-step process for effective daily precipitation estimation. The methods assessed are: (1) Inverse Distance Weighted Average (IDW); (2) Multiple Linear Regression (MLR); (3) Climatological MLR; and (4) Locally Weighted Polynomial Regression (LWP). In the suggested simple two-step estimation process, precipitation occurrence is first generated via a logistic regression model before applying IDW scheme (one of the local scheme) to estimate the amount of precipitation separately on wet days. As the results, the suggested method shows the better performance of daily rainfall interpolation which has spatial differences compared with conventional methods. And this technique can be used for streamflow forecasting and downscaling of atmospheric circulation model effectively.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.10
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• pp.481-489
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• 2016

This study examined the relationships among stress, childhood traumatic experience, ego-resilience, and life satisfaction of university students to explore the moderating effects of ego-resilience on those variables. The survey participants were 459 university students in Gyeonggi province. The collected data were analyzed using frequency, Pearson correlation coefficient, stepwise multiple regression, and moderated multiple regression by SPSS. The results were as follows. Stress, childhood traumatic experience and ego resilience had correlations with the life satisfaction. Ego resilience and stress were significant effective variables on the life satisfaction. Moderated multiple regression analysis also showed that a positive future orientation, which is a sub factor of ego-resilience, influenced the stress level. Based on these findings, it is important to lower the stress levels to increase the students' life satisfaction level. To do so, a strategy to enhance the positive future orientation is recommended.

• Journal of Digital Convergence
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• v.16 no.12
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• pp.449-457
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• 2018

This study examined the effect of communication competency and job stress of nurses working in long term care hospitals on turnover intention and to verify the effect of emotional intelligence control on the relationship among communication competency, job stress and turnover intention. The subjects consisted of 240 nursing students, and data were collected during from February 1 to February 28, 2018. The data were analyzed with descriptive statistics and Pearson's correlations that used IBM SPSS WIN 20.0 program and the analysis of control effect was made by using Hierarchical Multiple Regression Analysis. The result of this study can be summarized as follows. The turnover intention was positively correlated with job stress. The factors which had effect on turnover intention were pay satisfaction, job stress and age. Based on the results of this study, it is necessary to develop a systematic program that reflects clinical characteristics and education in order to reduce the turnover intention of the nurse.

• Journal of rehabilitation welfare engineering & assistive technology
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• v.10 no.2
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• pp.113-118
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• 2016

This study was aimed to analyze the Influence of Reasonable Accommodation on the Employment Probability and Job Retention of the People with disabilities. Survey on the employment discrimination of people with disabilities was utilized. The methodologies used in the study are logistic regression estimating job probability, multiple regression to evaluate job retention. As a result, reasonable accommodation for initial exam was not statistically significant on the employment probability. While, exam process reasonable accommodation was statistically significant on the employment probability. For job retention, recruit accommodation, workplace access accommodation were not significant on the job retention. While, company regulation and job adjustment was statistically significant on the job retention. It is necessary to be provided with reasonable accommodations in the direction of increasing the employment and strengthening job retention of people with disabilities. There is a need to support and expand the reasonable accommodation to the employer by the policy.

• Journal of the Korean Data and Information Science Society
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• v.22 no.1
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• pp.57-64
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• 2011

The Korea Sport Talent Search System (KOSTASS) can easily assess potential of Korean youth in 23 sport events and to identify sports talents who have high potential in track-and-field, swimming and gymnastics. The purpose of present study was to analysis relationship between sports talent test scores and KOSTASS scores. Physique, physical fitness, motor ability and physiological tests including skeletal age were administrated. Data of 201 elementary students who aged 7 to 12 living in Seoul area were collected. For pure association analysis, Pearson correlation coefficient and partial correlation coefficient are used and stepwise regression analysis is used for selecting important sports talent test scores. The results show that skeletal age, weight, chest circumference, 50-meter run, and half-squat jump have relatively low impact on six KOSTASS scores. The KOSTASS program would contribute to identify talented youth in sports among Korean youth population and success for international sports competition.

• Journal of the Korea Computer Industry Society
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• v.2 no.6
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• pp.859-866
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• 2001

Successful project planning relies on a good estimation of the effort required to complete a project, together with the schedule options that may be available. Despite the extensive research done developing new and better models, existing software effort estimation models are present only the total effort and effort (or manpower： people per unit time) function for the software life-cycle. Also, Putnam presents constant effort rate in each subcycles. However, the size of total efforts are variable according to the software projects under the influence of its size, complexity and operational environment. As a result, the allocated effort in subcycle also differ from project to project. This paper suggests the linear and polynomial effort estimation models in specifying, building and testing phase followed by the project total effort. These models are derived from 128 different projects. This result can be considered as a practical guideline in management of project schedule and effort allocation.

• Korean Journal of Environment and Ecology
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• v.34 no.1
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• pp.55-62
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• 2020

To estimate headwater stream temperature with seasonal variations, we analyzed precipitation, runoff and air temperature in experimental forest of Kangwon National University, Gangwon-do (2017~2018 years). The daily mean value of headwater stream temperature for spring was 6.9~17.7℃ and correlated with air temperature, that for summer and fall were 12.2~26.3℃ and 3.6~19.3℃, correlated with air temperature and runoff. Based on seasonal variations, we applied for stepwise multiple linear regression analyses to estimate headwater stream temperature with seasonal variations. The equations were headwater stream temperature(WT)_spring=(0.553×Air temperature)+(0.086×Runoff)+4.145 (R²=0.505; p<0.01), WT_summer=(0.756×Air temperature)+(-0.072×Runoff)+2.670 (R²=0.510; p<0.01), and WT_fall=(0.738×Air temperature)+(0.028×Precipitation)+2.660 (R²=0.844; p<0.01). The coefficient of determination (R²) was greater than when it was estimated by air temperature in all seasons and progressively increased from spring to winter. Therefore, we indicated difference on estimated magnitude of stepwise multiple linear regression, due to effects on headwater stream temperature of different environmental factors with seasonal variations. Furthermore, temporal factors with spatial characteristics (e.g., river versus headwater stream) could be recommended for estimating headwater stream temperature.