• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.608-615
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• 2022

Construction projects are large-scale projects that require extensive construction costs and resources. Especially, scheduling is considered as one of the essential issues for project success. However, the schedule and resource management are challenging to conduct in high-tech construction projects including complex design of MEP and architectural finishing which has to be constructed within a limited workspace and duration. In order to deal with such a problem, this study suggests resource and sequence optimization using constraint programming in construction projects. The optimization model consists of two modules. The first module is the data structure of the schedule model, which consists of parameters for optimization such as labor, task, workspace, and the work interference rate. The second module is the optimization module, which is for optimizing resources and sequences based on Constraint Programming (CP) methodology. For model validation, actual data of plumbing works were collected from a construction project using a five-minute rate (FMR) method. By comparing actual data and optimized results, this study shows the possibility of reducing the duration of plumbing works in construction projects. This study shows decreased overall project duration by eliminating work interference by optimizing resources and sequences within limited workspaces.

• Asia pacific journal of information systems
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• 제18권4호
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• pp.83-103
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• 2008

In the new web based learning environment which has recently emerged, a variety of new learning objectives and teaching methods suited to this learning environment have been adopted. Recently, web based project-based learning methods have received a great deal of attention from those wishing to improve learning performance. The objective of this study is to identify the impact of characteristics of communication media and instruction behavior on collaborative interaction and project performance through web based group projects. The characteristics of communication media were divided into richness, flexibility, and ease of use, and the characteristics of instruction behavior were divided into support and expression, which are independent variables. Collaborative interaction as a mediate variable, was divided into information sharing and negotiation. Project performance was the dependent variable. To verify the proposed research model empirically, an experiment was conducted in which learners participated in on-line and off-line courses with group projects. The group project was conducted virtual product development(VPD), and designed a web-site about the VPD. At the end of the project, a survey was conducted. Of the 270 students, 239 responded. The students were assigned to groups of 3 or 4 members, and represented different genders and levels of computer competence. The reliability, validity, and correlation of research variables were analyzed using SPSS 14.0, and the measurement model and the structural goodness-of-fit of the research model were verified through SEM analysis using Lisrel 8.54. We found important results as follows; First, richness and ease of use has positive impacts on each of sharing information and negotiation. This suggests that richness and ease of use are useful in sharing information which is related to the task and agreeing in opinions among group members. However, flexibility has not positive impacts on sharing information and negotiation. This implies that there is no great difference in performance of PC and information literacy of user. Second, support and expression of instructor have positive impacts on sharing information and negotiation. This indicates that instructors play an important role in encouraging learners to participate in the project and communicating with them, sharing information related to the project, making a resonable decision and finally leading them to improve a project performance. Third, collaborative interaction has a positive impact on project performance. This result shows that if the ability to share information and negotiate among students was improved then a project performance would be improved as well. Recently, in the state of revitalized web based learning, it is opportune that web-based group project is practically conducted, and the impact of characteristics of communication media and characteristics of instruction behavior on sharing information, negotiating among group members and improving a project performance is verified. On the basis of these results, we propose that forms of learning, such as web based project, could be one of solution which is to enforce interaction among learners, and ultimately improve learning performance. Moreover web-based group project is able to make up for a weakness which makes it difficult to make interpersonal relations or friendship among learners in computer mediated communication or web based learning.

• 한국건설관리학회논문집
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• 제7권5호
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• pp.177-190
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• 2006

Construction projects are facing delay problems. Delays in construction have been immense effect on performance or satisfactory delivery of the project. Delays have been causing project cost overrun as well as it is a source of dispute hence damaging the relationship between the project participants. The purpose of this study was to explore the causes of delay risk through a field survey study. Data were collected from construction professionals working in owner, consultant and contractor organizations. All together 208 questionnaire instruments were used and analyzed by employing statistical tools (SPSS computer program). 19 delay factors were identified by this study, out of which following factors were critical: Frequent interruptions from public (local people, pressure group etc.), changed site condition, failure to provide required construction site, unrealistic project time estimation and design errors.

• 지역사회간호학회지
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• 제12권2호
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• pp.532-546
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• 2001

This report is the result of interim evaluation of a health promotion project which was operated by a public health center of K Gu in the year of 2000. It evaluated the aspects of the aim of a project, a target group. and adequacy and appropriateness of a approaching strategy by considering data of public health center's self-evaluation, and guidelines of a group assigned to evaluate the project. The way of evaluation was dividing the project into a colligated evaluation and a evaluation by projects in the aspects of the structure, the procedure. and the result of a result. Through this. a device to improve the health improvement project was derived. The target data for evaluation was the second data and data of self-evaluation, reported data, membership register data of a health management. and interview materials with the people in charge by projects that are all collected as a project management documents. The result of evaluation is stated below. 1. Main purpose of a health promotion project is building a environment of healthy life practicing and providing information through various ways to increase the rate of practicing healthy life. Through overall project. the ultimate purpose and definite purpose were same, however, it was not quite satisfied to offer planning of a time, and a target amount in detailed strategy. As the purpose was to build environment of healthy life practicing. most of the projects had the whole community citizen as a target group. That made difficult to operate detailed projects. so the result was hard to estimate as much as the effort put into it. Also, there were too many kinds of projects and target groups to be equal to by the human source of a health promotion project team. so we were just bent on operating a project. and could not prepare for the evaluation. As the most of former evaluation of public health service was just counting number of the objects, the new way of evaluating a project wasn't familiar to us. so the evaluation of a detailed project cannot be done well. Techniques and advices needed for all of these things weren't offered appropriately. For the forward direction of unfolding project. it is desirable to operate project by selecting focused target and considering a strategy of evaluation as a strategy of reasonable spread. The evaluation of the project became difficult as participation of citizen for it was poor. So, approach strategy that can lead the motivation of community citizen should be derived. 2. For the continuation of a health promotion project, technical assistance system. description of a field in charge, and arrangement of the amount of task should be developed as a central level. Furthermore, as the health promotion project focus on behavioral modification program whose purpose is to lessen dangerous factors. the public health service model which is incorporated with former project should be developed and spread out in the field for the object-centered project plan.

• 한국임상약학회지
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• 제31권2호
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• pp.104-114
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• 2021

Objective: To explore the perception of drug utilization review (DUR) system and DUR modernization pilot project among healthcare professionals and patients. Methods: We conducted 8 times of focus group interviews (FGI) between August 1, 2019 to December 31, 2019. The healthcare professionals and patients who participated in the DUR modernization pilot project were included in the present study. Based on the type of project participation or medical institution, the participants were divided into the following four groups: group 1, hospital; group 2, clinic; group 3, pharmacy; and group 4, patient. Within each group, interviews were conducted under a pre-defined agenda to identify the implicit perceptions of the participants; the contents of the interviews were, then, categorized. Results: Healthcare professionals established a consensus on the positive aspects of the DUR system and DUR modernization pilot project. However, substantial concerns remain, such as additional workload associated with monitoring adverse events or acquiring consents from patients. Furthermore, a difference of opinion over the DUR convenience system was observed. Among 3 DUR convenience system, the personal medication history review service was highly utilized, but pop-up hold function and communication system was rarely used. Conclusion: We observed that systematic intervention using the DUR system is effective for both healthcare providers and consumers. Adverse events caused by inappropriate drug use can be prevented by continuous patient monitoring. Therefore, the role of DUR system needs to be expanded to establish a safe drug management system.

• 서비스연구
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• 제12권3호
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• pp.70-92
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• 2022

프로젝트에 대한 리스크 평가는 프로젝트의 성과를 사전에 판단할 수 있기 때문에 프로젝트를 수행하는 기업의 입장에서 사업수행 이전에 진행하는 활동 중 가장 중요한 활동이다. 본 연구는 이러한 프로젝트 리스크 평가가 사업 수행 성과 및 고객만족도에 어떠한 영향관계를 가지는 지 분석하기 위해 기술 및 일정 등과 같은 전통적인 리스크 요인과 재무적, 전략적, 특별 리스크 등과 같이 기업에서 활용하는 리스크 요인을 종합하여 리스크 평가를 위한 요인을 마련하였다. 분석을 위해 전체 134개 공공 및 민간 프로젝트에 대한 사전 리스크 평가 결과와 사업 수행성과 및 고객만족도 등 프로젝트 수행 결과에 대한 정보를 수집하였다. 분석 결과 도출된 리스크 요인들은 비즈니스 성과 및 고객 만족도에 어느정도 영향을 미치는 것으로 나타났으나, 리스크가 반드시 성과에 부(-)의 영향을 미치지는 않다는 결과도 나타났다. 이는 리스크에 대한 관리 수준에 따라 프로젝트 성과가 영향 받는다는 것을 의미하는 것으로, 향후 연구에서는 리스크에 대한 관리 수준과 프로젝트 성과와의 관계에 대한 실증적인 연구가 필요할 것으로 판단된다.

• 국제학술발표논문집
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• The 2th International Conference on Construction Engineering and Project Management
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• pp.130-139
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• 2007

This paper presents a study on risk analysis in terms of contractor's costs in construction phase in which Crystal ball (software of Decisioneering, UK) has been utilized as a main tool. To realize it, a questionnaire survey has been carried out to identify the dominant factors that strongly influence contractor costs in Vietnam. Based on results of questionnaire investigation, the survey identified three factors which were duration of each construction task, costs of reinforcing steel, and cement. Then a spreadsheet model was created in order to analyze risks. The study also indicates that the cost of reinforcing steel and cement are the cause of risks for contractors. According to the suggested model, contractors may foresee the probability of completion within the approved budget, and the possibility of earning in accordance with owner's payment conditions.

• 국제학술발표논문집
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• The 1th International Conference on Construction Engineering and Project Management
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• pp.667-671
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• 2005

Analytical hierarchy process (AHP) is a potential decision making method in management that can be used in project management as well. Lack of productivity is perhaps the number one problem confronting in the construction industry. There are numerous factors which affect the productivity of a construction project, so it is necessary to find out the critical factors giving birth to productivity. In this paper, construction productivity is taken as example for the demonstration of the AHP application to find out the critical productivity factor in which the Level 1 is taken as selection of critical productivity factor, Level 2 as construction parties and Level 3 as productivity factors group. The outcome of this study is beneficial to the entire constructional professionals for applying the AHP.

• 대한공업교육학회지
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• 제37권1호
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• pp.125-143
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• 2012

이 연구는 특성화고등학교 '건축모형제작' 단원에서 프로젝트법을 적용한 수업이 직업기초능력 향상에 미치는 효과를 규명하는 것을 목적으로 하였다. 연구 목적을 달성하기 위하여 경기도 고양시 G특성화고등학교 3학년 2개반을 실험집단, 통제집단으로 선정하였다. 선정된 실험집단과 통제집단의 학생들을 대상으로 직업기초능력에 대한 사전검사를 실시하여 통계적으로 유의미한 차이가 없음을 확인하고 실험집단에는 프로젝트법을 적용한 수업을 실시하였고, 통제집단에는 전통적 수업을 실시한 후 사후검사를 통해 그 효과를 검증하였다. 결과를 검증하기 위하여 SPSSWIN 12.0 통계프로그램을 이용하여 t-검증을 실시하였고, 유의수준은 ${\alpha}$=.05로 하였다. 이 연구를 실시한 결과 얻어진 결론은 다음과 같다. 직업기초능력의 하위영역 중 이 연구에 적합하다고 판단되어 선정한 6개 영역, 즉 '문제해결능력', '의사소통능력', '자원활용능력', '수리능력', '대인관리능력', '자기관리능력' 모두 실험집단과 통제집단의 사후검사를 통해 프로젝트법을 실시한 실험집단과 통제집단 간의 유의미한 차이가 있는 것으로 나타났다. 종합하면 '건축모형제작' 단원에서 프로젝트법에 의한 수업은 직업기초능력을 향상시키는데 효과적이며 특히 직업기초능력의 다양한 하위영역 중 프로젝트법과 많은 관련이 있는 6개 영역을 향상시키는데 효과적인 학습방법이다.

• Journal of Construction Engineering and Project Management
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• 제2권4호
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• pp.25-31
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• 2012

The growing rate of delays is adversely affecting the timely delivery of construction projects. This study therefore assesses construction stakeholders' perception of the causes of delays and its effects on project delivery in a bid to proffer solution in minimizing the occurrences of delays. Questionnaire was used to elicit responses from construction stakeholders; a total of thirty three causes of delays, seventeen resultant effects of delays and fifteen methods of minimizing construction delays were identified for the study based on literature reviews. The results suggest that client's cash flow related problems are the main causes of delays while time and cost overruns are the major identifiable effects of delays in construction projects. However, adequate project planning and budgeting were suggested as possible ways of minimizing the occurrences of delays.