• Korean Journal of Construction Engineering and Management
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• v.14 no.1
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• pp.43-51
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• 2013

The changes in business structure of domestic construction companies suggest that there is a close relationship between the volume of overseas project and a company's financial condition. Based on this assumption, this study conducts an empirical analysis on a relationship between overseas project and financial stability of a construction company. The ratio of liquidity and liability was used as liquidity index and stability index respectively. The analysis was based on quarterly time-series data between 2000 and 2010. Two models were constructed for the analysis: Model 1 was based on the liquidity ratio and the amount of domestic and overseas construction project; Model 2 was based on the debt ratio and the amount of domestic and overseas construction project. The analysis results showed that the increasing amount of overseas project facilitated short-term financing with greater liquidity, and yet it was not very effective in lowering the debt ratio. This suggests that the dramatic increase in overseas construction project, which is observed recently, is not entirely an optimistic sign.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.35 no.2
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• pp.427-436
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• 2015

This study analyzes the factors effecting on pedestrian crossing behavior in the unsignalized intersection. Pedestrian crossing behavior is the results of mental stress defined as a combination of environment perception, avoiding accidents, halting collision, and instant crossing decision. It is necessary to make walkable intersection in cities through relieving this stress influenced by personality, traffic condition, and roadway environment. The purpose of study is empirically to examine the crossing behavior such as crossing satisfaction, crossing trial frequency and waiting time based on various factors effecting on crossing intersection by video and questionnaire survey. The $x^2$-test is applied to analyze the characteristics of crossing trial frequency according to each factor. Also, the hazard rate model is established to find the factors effecting on waiting time for crossing. Finally, the direct and indirect effects on the pedestrian crossing satisfaction are presented as the results of LISREL.

• Journal of Broadcast Engineering
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• v.15 no.3
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• pp.368-379
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• 2010

As high-definition video is broadly used in various system such as broadcast system and digital camcorder the proper method in order to improve the quality of high-definition video is needed. In this paper, we propose an efficient method to improve color and contrast of high-definition video. In order to apply the image enhancement method to high-definition video, scale-down video of high-definition video is used and the parameter for image enhancement method is computed from small size video. To enhance the color of high-definition video, we apply color constancy method. First, we separate the video into several scenes by cut detection method. Then, we apply color constancy to each scene with same parameter. To improve the contrast of high-definition video, we use union of original image and histogram equalized image, and weight is calculated based on sorting of histogram bins. Finally, the performance of proposed method is demonstrated in experiment section.

• Journal of the military operations research society of Korea
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• v.35 no.3
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• pp.157-176
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• 2009

The main purpose of this study is to investigate the relationships among individual career management behavior, organizational career management help and organizational commitment based on psychological contract. The research model takes multi-dimensional perspective. The empirical study has been done using data collected from 360 military officers. The research findings are as follows: First, individual career management behavior is directly linked to the experience of organizational career management help. Second, both individual and organizational career management behaviors are connected to organizational commitment. Especially, career help from military organizations is closely related to affective commitment. Third, psychological contract fulfillment plays a key role in mediating the relationship between organizational career management help and affective commitment. These findings provide some support for the dimensional effects of individual career management behavior on organizational career management, psychological contract fulfillment and organizational commitment in military sector.

• Journal of the Korean Society of Hazard Mitigation
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• v.4 no.3 s.14
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• pp.73-81
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• 2004

On this study, durability decreasing element caused by salt damage was analyzed elementally and studied with the data of the inside and outside in the country. The design strength and water-cement ratio according to diffusion coefficients of chloride were applied to Fick's diffusion equation. The required over depended on environmental conditions is estimated with endurance period, and the influences on cover according to the transformation of the each parameter were investigated. In consequence, if water-cement ratio decreases and design strength increases, it shows that slowing infiltration velocity of chloride ion can decrease required cover. Especially, it is more effective to use Portland blast-furnace slag cement into high strength concrete in the splash zone environmental conditions in blocking the diffusion of chloride ion. As the result, in the case of the offshore concrete structure needed high durability, it is needed to increase cover($3cm{\sim}8cm$) than minimum standard cover(8cm) according to environmental conditions.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.8
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• pp.5273-5281
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• 2015

The purpose of this study is to examine the effects of health related departments' self-efficacy on stress-coping strategies by setting up grade and sex as regulating variables and figure out their mediating effects. To attain the goal, a survey was conducted to 1,442 undergraduates attending S University, and the results went through analysis by using SPSS and AMOS. To sum up the study results, preference of difficult project exerted negative effects on avoidance-centeredness. Self confidence had negative effects on avoidance-centeredness. Self-regulating efficacy indicated positive effects on social support-orientation and problem solving-centeredness while avoidance-centeredness showed negative effects. Regarding effects among self-efficacy's subfactors, confidence, self-regulating efficacy, and preference for task difficulty, and stress-coping strategies' subfactors, social support-orientation, problem solving-centeredness, and avoidance-centeredness, there was difference found in the model by grade, but there was no difference found by sex.

• Journal of Digital Convergence
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• v.18 no.9
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• pp.125-133
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• 2020

This study confirms the impact relationship between the president and employee competency related to smart factory construction of manufacturing SMEs, the acceptance intention and management performance in smart factory construction. The 310 data collected through a questionnaire were tested for research hypotheses through SEM. As a result, the president and employee competency affects the smart factory acceptance intention and the employee competency affects the management performance. Acceptance intention has a positive impact on management performance. Regional characteristics have a moderating effect on the relationship between president competency, acceptance intention, and management performance. Through this study, it was confirmed that the president and employee competency was an important factor in smart factory built.

• International Commerce and Information Review
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• v.17 no.1
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• pp.29-55
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• 2015

The purpose of this study is to look at the role of e-trade for trade facilitation, which was the conclusion of November 27, 2014 which is based on the main discussions and content of the WTO. This study examines the data collected based on previous research and literature data, and it proposed a policy direction using it. Trade facilitation agreement also contains a number of e-Trade related information and internet-based electronic documents can be sent very quick flow of information and it can save time and cost concerning parties. e-Trade is a very important basement and it is needed to continually develop and exchange for trade facilitation. To make easy trade facilitation, e-Trade is one of the means to achieve competitiveness of companies and countries under these circumstances. The conclusion of this study shows that it is necessary to steadily develop e-trade technologies for trade facilitation and to continuously exchange e-trade system for easy customs services in concerining countries to maximize these effects.

• Journal of the Korea Convergence Society
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• v.8 no.7
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• pp.131-139
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• 2017

The purpose of this study was to investigate the effectiveness of public health center's Integrated Health Promotion Program for the public officials who provide health promotion services to local residents. The survey was conducted from September 10 to October 5, 2015 using a structured questionnaire. Each of the 254 public health centers were sent two questionnaires but I only received 348 and 339 were used for the final analysis. As a result of this study, the all subjects were showed the average level of efficiency, autonomy, accountability, and the support of the Ministry of Health and Welfare, and the related organizations. Also, the evaluation of all the variables were positive when there was a dedicated department for integrated health promotion program within the health center and when the proportion of essential program was high. However, after the Integrated Health Promotion Program was included in the Health centers, the workload has increased and the implementation of the essential program does not fully reflect the regional health problems or local conditions. Based on these results, it is necessary to find a plan for the successful operation of the Integrated Health Promotion Program.

• Journal of the Korean Geographical Society
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• v.44 no.1
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• pp.1-16
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• 2009

This study aims to classify climate zones using Empirical Orthogonal Function and clustering analyses considering both air temperature and rainfall features in South Korea. When examining climatic characteristics of air temperature and rainfall by seasons, the distribution of air temperature is affected by topography and latitude for all seasons in South Korea. The distribution of rainfall demonstrated that the Yeongdong area, the southern coastal area and Jeju island have higher rainfall while the central area in Gyeongsangbuk-do is the least rainfall area. Clustering analyses of average linkage method and Ward's method was carried out using input variables derived from principal component scores calculated through Empirical Orthogonal Function analysis for air temperature and rainfall. Ward's method showed the best result of classification of climate zones. It was well reflected effects of topography, latitude, sea, the movement of surface pressure systems, and an administrative district.