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Recently, the Integrated Project Delivery(IPD) based on cooperation and synthesis has been expected to improve the efficiency of construction industry. However, it is very difficult to apply the IPD to the public construction projects in Korea due to misunderstanding of the IPD and rigidity of delivery system. This study, therefore, analyzes the utility of IPD as a new delivery system through MAUT-AHP based on a survey. Utilizing the results of analysis, this study makes some suggestions for the application of IPD to public construction industry. The suggestions were made by analyzing the fundamental concept of IPD and the domestic institutional issues in construction industry.
Recently construction industry has been changed highly, widely, complexly and multi-functionally. This change has brought construction industry a new paradigm. This new paradigm and uniqueness of construction industry increase disaster occurrences during construction. Safety management, therefore, has focused on the disaster occurrences. Especially among safety management, safety management of temporary facilities is very important. When temporary facilities are fallen down into disasters, they will bring fatal accidents. Therefore, the purpose of this study is to suggest efficient safety management for the prevention of disasters of formwork for RC construction through the mechanism analysis of disasters. This paper was validated by applying the mechanism eventually to the case of disasters of temporary facilities.
The purpose of this study is to show the risk visualizing method by object-oriented model for reinforced concrete construction. The risk management process model is set up by WBS(Work Breakdown Structure) and RBS(Risk Breakdown Structure). Each risk factor's weight is estimated from AHP(Analytic Hierarchy Process) and Fuzzy Integral. The risk's degree of each risk factor is calculated for each element from object oriented model. After synthesizing risk factor's weight and risk's degree of each element, it is applied to object-oriented model again. Through this process, each element's risk is visualized by the object-oriented modeling tool.
Recently, the Integrated Project Delivery(IPD) is based on collaboration and synthesis has been expected to improve the efficiency of construction industry. However, it is very difficult to apply, which the public construction projects in Korea due to misunderstanding of the IPD and rigidity of delivery system. Therefore, this study analyzed restriction factors of IPD to apply on Korea construction industry through survey and experts interview. As a result of analysis, three factors were developed, that is : policies, owners capability, and construction environment. Utilizing the results of analysis for three factors this study makes some suggestions for the application of IPD to Korea construction industry through SWOT analysis.
Delays occur commonly in construction projects. Assessing the impact of delay is a contentious issue, especially when there are productivity changes for the repetitive tasks. Learning curves have traditionally been used to describe the improvement in the performance of repetitive tasks, Several delay analysis methods are available for determining the schedule impact resulting from project delays and disruptions but no one method can be used in situations including the loss of productivity for the repetitive tasks. Thus in analyzing the delay especially for the repetitive tasks, a care should be taken if there are any productivity change and learning effect. This paper proposes the "Accumulated Delay Analysis Method 1(ADAM 1)" to analyze the schedule delay including lost productivity and learning effect that affect the results of the analysis.
The purpose of this study is relationship between psychological capital of travel agent employee and organizational effectiveness. Total 300 questionnaires were distributional and 270 responses were collected. Analysis of this study was conducted with total 257 responses excluding insincere answers. The results are as follow. The results showed that job satisfaction had positive influence on hope and resiliency, optimism and Organizational commitment had positive influence positive hope and optimism. Travel managers need the understanding and support of the employee"s psychological capital. The employee"s characteristic and motivation are rapidly changing and psychological capital change their perceived emotion and attitude from self-efficacy, hope, optimism, resiliency. This study has an important since it gives comprehensive understanding of employee"s psychological capital.
The purpose of this study is to propose an economic evaluation model of exterior wall materials considering defects and maintenance. In previous studies, the evaluation of exterior wall materials includes only subjective standard by customers and architects; The economic assessment does not consider the life cycle cost or maintenance cost of the material. As a result, there has been a decline in value, such as building defects and rising maintenance costs. In this study, authors propose a comprehensive economic evaluation that considers material properties, defect occurrence, maintenance cost, and life cycle cost, which are not considered in previous studies, when judging the value of exterior wall materials. The economic evaluation method of the exterior wall materials proposed in this study can be used as a decision model.
This study aimed to present various programs and products for trekking revitalization based on motivations, trip profiles, and trekker's preferences. The results indicated that the motivation segmentation criterion enabled the classification of female trekking participators into three clusters: 'culture and pleasure seekers', 'ego and status seekers', and 'escape and relax seekers'. the main finding was that all clusters were interested in nature friendly and have experienced health improvement in common. In addition, there were minor significant differences among the clusters in terms of motivations, trip-related characteristics, and preferences. Culture and pleasure seekers enjoyed participating in trekking programs including cultural & historical attractions, and sightseeing near the areas and preferred staying at mountain villas convenienced. Ego and status seekers engaged in nature and preferred long distances trekking and staying in temple more than other groups. Escape and relax seekers preferred to participate in nature and health-related trekking programs with their friends.