• Title/Summary/Keyword: Construction schedule management

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A Survey Study on Needs for the Construction of the CSFT (Cluster with a Strongpoint for Field Training) (CSFT-구축 수요도에 관한 조사 연구)

  • Lee, Jae-Hong;Kang, Kyu-Hun;Kwon, Won-An;Kim, Gi-Chul;Kim, Chang-Tae;Min, Dong-Gi;Lee, Jin-Hwan
    • PNF and Movement
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    • v.11 no.1
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    • pp.27-33
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    • 2013
  • Purpose : The purpose of this research was to research on Needs for the Construction of the CSFT(Cluster with a Strongpoint for Field Training) on students and professors of health-related majors. Methods : We investigated 164 students and professors using a self-reporting method with experience of Field Training. A statistical analysis was performed using SPSS 17.0 for window version. Results : It showed that educational satisfaction had scored 4.05 in curriculum, 4.00 in environment, 3.52 in schedule, 3.71 in evaluation and 3.71 in teaching and 3.84 in industrial-college systems for Field Training. Needs for the Construction of the CSFT had scored 4.17 in $mean{\pm}standard$ deviation. Conclusion : Characterization of Nursing, Department of Health and local health care environment and conditions, if you think the quality of education for the Department of Health Nursing, gradually, the acquisition and improvement of the base hospital is necessary. Therefore, it is considered to be institutionalized by installing the strongpoint hospital at least one in each region, so that they can contribute to the improvement of people's health.

A Study on the Utilization of BIM Model using Vertex Data-based Division Method (정점데이터기반 분할기법을 활용한 BIM모델의 활용 방안 연구)

  • Jae-Yeong, Hwang;Jae-Hee, Lee;Leen-Seok, Kang
    • Land and Housing Review
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    • v.14 no.1
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    • pp.123-134
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    • 2023
  • The BIM (Building Information Modeling) model created in the design stage can be used for prior review and schedule management for the construction stage. However, in the case of actual BIM application cases, additional work is required, such as creating a new model suitable for the construction stage, rather than using the 3D model in the design stage, due to the difference in the purpose of use between the design stage and the construction stage. Therefore, in this study, a division function of BIM model is proposed as a method of recycling it in the construction stage without a remodeling process. In addition, the application to the actual BIM model and the 4D CAD system linkage of the divided object and the comparison with the existing division method are used to verify the usability.

Preliminary Scheduling Based on Historical and Experience Data for Airport Project (초기 기획단계의 실적 및 경험자료 기반 공항사업 기준공기 산정체계)

  • Kang, Seunghee;Jung, Youngsoo;Kim, Sungrae;Lee, Ikhaeng;Lee, Changweon;Jeong, Jinhak
    • Korean Journal of Construction Engineering and Management
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    • v.18 no.6
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    • pp.26-37
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    • 2017
  • Preliminary scheduling at the initial stage of planning phase is usually performed with limited information and details. Therefore, the reliability and accuracy of preliminary scheduling is affected by personal experiences and skills of the schedule planners, and it requires enormous managerial effort (or workload). Reusing of historical data of the similar projects is important for efficient preliminary scheduling. However, understanding the structure of historical data and applying them to a new project requires a great deal of experience and knowledge. In this context, this paper propose a framework and methodology for automated preliminary schedule generation based on historical database. The proposed methodology and framework enables to automatically generate CPM schedules for airport projects in the early planning stage in order to enhance the reliability and to reduce the workload by using structured knowledge and experience.

Development of Measurement and Evaluation Process for Risk-based Configuration Factors in Mixed Used Development in Urban Regeneration Projects (복합용도 도시재생사업에서의 리스크 기반 변화요인 측정 및 평가 프로세스 개발)

  • Son, Myung-Jin;Hyun, Chang-Taek
    • Korean Journal of Construction Engineering and Management
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    • v.13 no.6
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    • pp.94-106
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    • 2012
  • In recent years, the risks and uncertainties associated with mixed used development in urban regeneration projects which have actively been implemented at home and abroad have been on the rise due to the uncertainties of the initial business plan, difficulty of financing, increase in total cost and schedule delay. To cope with rapid social and economic changes and optimize benefits, a risk-based configuration management process that considers life cycle is required, along with accurate planning in the early stage of the business. In addition, it is necessary to prepare measures that can respond to the evaluation and measurement of the configuration factors in relation to the business process. However, the focus of previous studies on configuration management in the field of construction was mainly on humanities and the sociological aspects such as organization, leadership, ideology and similar concepts. There has been limited research on the process and measurement and evaluation methods for configuration factors required in decision-making on the risks and changes that can occur in the actual project implementation phase. Accordingly, in this study, we defined risk-based configuration factors and developed a process and MECA/3DAM/CII methodology to measure and evaluate these factors so as to carry out systematic configuration management of mixed used development in urban regeneration projects.

A Study on the Establishment of Long-Distance Route Network of Full Service Carrier and Long-Distance LCC - Focused on Malaysia Airlines and AirAsia X (대형항공사와 장거리 LCC의 장거리 노선 네트워크 구축에 관한 연구 - 말레이시아 항공과 AirAsia X를 중심으로)

  • Choi, Doo-Won
    • Journal of Digital Convergence
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    • v.19 no.12
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    • pp.165-173
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    • 2021
  • The purpose of this study was to provide directions to help enter and expand long-distance routes by analyzing the characteristics of AirAsia X's network construction with Malaysia Airlines. To this end, long-distance route data was extracted from the OAG Schedule Analyzer and the network was analyzed on a two-period basis using SNA. Since AirAsia X's entry into long-range routes, Malaysia Airlines has steadily reduced its routes across the entire region. On the other hand, it is analyzed that AirAsia X is building an expanded network by increasing its network in Northeast Asia instead of ultra-long range routes. Studies have shown that LCCs also have potential growth in the long-distance route market of less than 7,000 km. The results of this study may help LCC establish a long-distance market entry and network deployment strategy.

Critical Chain Project Management as a New Paradigm for Reducing the Project Delivery Time (프로젝트 일정 단축을 위한 새로운 경영 패러다임 Critical Chain Project Management(CCPM))

  • Jang, Seong-Yong
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • 2007.11a
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    • pp.68-74
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    • 2007
  • Critical Chain Project Management(CCPM) is a new project management system paradigm which maintains the advantages of PERT/CPM and improves the shortcomings of it. In CCPM the task durations are determined as 50% time estimates, ie average time discarding the their contingency. CCPM determines the critical chain the constraint of a projects considering the logical precedence relationship and resource conflict resolution. Project buffer is located at the end of critical chain to absorb the variations of critical chain. The size of project buffer is usually calculated as the half of the sum of critical chain length. Also feeding buffer is inserted after each non-critical chain which feeding into the critical chain to prevent the time delay of critical chain from uncertainties of non-critical chains. Resource buffer can be utilized to improve the availability of resources of critical chain. Buffer management is a project execution and control mechanism. Buffers are classified into 3 zones. They are OK zone, Watch and Plan zone and Expediting zone. If the project status is within Watch and Plan zone, contingency plan is established. And if it changes into Expediting zone, the preplanned contingency plan are executed to recover the time delay. In CCPM the workers are asked to work with relay runner work mechanism that they work fast if possible and report their completion to project manager for the succeeding task to start as soon as possible. The task durations are not considered as the promised time schedule. The multi-tasking is prohibited.

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Criteria for the Float Distribution (여유시간 분배기준에 관한 연구)

  • Lee Gul-Chan;Kim Kyung-Rai;Shin Dong-Woo
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • autumn
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    • pp.509-512
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    • 2003
  • The Critical Path Method(CPM) is an effective tool used for planning and scheduling. One of strong point in the CPM is what can calculate float. Float is able to prolong without having an effect on overall schedule of project, however concept and scope about ownership is not definite, because it is a by-product of project. Thus participants have had many dispute in using float because of their interests. In recent years, a few theories have evolved in an attempt to solve this problem. But the prior research did not make a reasonable distribution of float because their criteria of distribution was based on ratio for total project time. Actually, an application of float is achieved by participant's delay risk. Therefore. this paper proposes criteria for float distribution using delay risks, and the framework for the assessment of the delay risks.

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Application of the 3D CAD Model Data for 4D Simulation and Quantity Estimation (4D 시뮬레이션 및 일정별 물량정보검색을 위한 3D 모델 정보 활용)

  • Lee Jae-Cheol
    • Korean Journal of Construction Engineering and Management
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    • v.5 no.4 s.20
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    • pp.107-114
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    • 2004
  • This paper represents the application of the 3D CAD Model data for 4D simulation and quantity estimation. These support the effective and practical use of 4D CAD model. By using and manipulating the 3D CAD model information, scheduling and quantity estimation could be developed more quickly and effectively. So the 3D CAD model information is made use of not only drawing a blueprint but also playing an important part of data integration platform. The scheduling module sets up the schedule generation logic that consists of period, priority of element arrangement, and time lag of floor placement. It sorts the working items as a priority of working process. And the quantity estimation module queries the material quantity of the structural elements according to the scheduling conditions. These two modules are developed using the 3D CAD model information and assist the function of 4D CAD model.

A Study on the Development and Application of a Small Shipyard Customized Production Process Planning and Management System (소형조선소 맞춤형 생산공정 계획관리 시스템 개발 및 적용에 관한 연구)

  • Kim, Young-Hun;Hong, Min-Jong;Baek, Seung-Ju;Lee, Won-Seok;Jo, Yong-Hwa;Lee, Dae-Hyung;Lee, Hoon-Sick;Na, Sung-Tae
    • Journal of the Korean Society of Industry Convergence
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    • v.25 no.1
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    • pp.79-86
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    • 2022
  • In general, since the types and types of ships, so complex and various variables are included to measure the amount of construction work. In addition, it is mot easy to predict the schedule or the number of working hours before ship construction, and it is also mostly inaccurate. As a result, the master plan is manually drawn up by the expert's experience, but there are limitations due to various factors. Medium and large shipyards are operating APS(Advanced Planning and Scheduling) system that reflects industrial characteristics to improve productivity in the planning stage, and utilize information from systems such as ERP(Enterprise Resource Planning) system and MES (Manufacturing Execution System). On the other hand, small shipyards rely mostly on manual work such as Excel work based on the experience of the workers. Therefore, this study intends to develop a master plan management system that can efficiently manage the production process from the business planning stage in consideration of the characteristics of small shipyards.

Primary Management Factors for Collaboration among Participants in Technical Proposal Tendering (기술제안입찰 참여자간의 협업지원을 위한 중점협업관리요소 도출)

  • Koo, Seonkeun;Lim, Susang;Yoon, Yousang;Han, Sangwon;Hyun, Changtaek
    • Korean Journal of Construction Engineering and Management
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    • v.17 no.5
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    • pp.3-12
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    • 2016
  • Recently government is set to expand its policy to promote technical proposal tendering in a dimension of technical competitiveness reinforcement. Because a variety of complicated techniques are applied in technical proposal tendering and variables could be occurred in terms of cost, schedule, constructability and others when techniques are reflected on design document collaboration management among participants is considered insignificantly. So the research would determine primary management factors and presents management direction for collaboration among participants. First action for this is categorization of hindrance factors to collaboration into five factors as 'Poor work processing', 'Communication cap among participants', 'Lack of understanding about technical proposal tendering', 'Difficulty of decision making' and 'Insufficiency in managing the work data'. Second correlation analysis is conducted between the categorized factors and participants according to tasks in technical proposal tendering to figure out the correlation degree of variables. If there is a strong correlation between variables, hindrance factor in that case regarded primary management factor to collaboration and finally management direction is presented at each task.