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研究生: 尚靜宜
Ching-I Shang
論文名稱: 專案範圍變動下應變成本之重新配置:系統動態學在專案風險管理的應用
System Dynamics in Project Risk Management:Reallocating the Contingency Cost under the Project Scope Change
指導教授: 曾清枝
Ching-chih Tseng
口試委員:
學位類別: 碩士
Master
系所名稱: 管理學院 - 工業管理研究所
Graduate Institute of Industrial Management
畢業學年度: 90
語文別: 英文
論文頁數: 70
中文關鍵詞: 應變成本專案範圍系統動態
外文關鍵詞: Contingency cost, System dynamics, Project scope
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  • The fast changing environment and the complexity of projects has increased risk exposure. Traditional tools and technologies used in the process of risk management are not appropriate owning to its static analysis attribute. The project manager perceives the importance of taking prospective tools to face the challenge and keep the effort to control the project. This research proposes a project risk dynamics model to lead the project manager how to reallocate the contingency cost under the project scope change with a holistic view. By combining the process of risk management and system dynamics analysis in the project management, early signs of risk emergence, which would remain unperceived until problems would aggravate, can be identified in the project. Hence, the project manager can take better advantage offered by System Dynamics modeling, while enhancing the performance of the existing risk management process.
    Project scope change creates a series of effects and causes cost overruns that affect the schedule and lower performance in the long run. This research presents a risk dynamics framework that displays a trade-off process between cost and schedule and thereby attempts to revise the contingency cost and keep it under control. A pipeline work package is modeled and discussed.


    The fast changing environment and the complexity of projects has increased risk exposure. Traditional tools and technologies used in the process of risk management are not appropriate owning to its static analysis attribute. The project manager perceives the importance of taking prospective tools to face the challenge and keep the effort to control the project. This research proposes a project risk dynamics model to lead the project manager how to reallocate the contingency cost under the project scope change with a holistic view. By combining the process of risk management and system dynamics analysis in the project management, early signs of risk emergence, which would remain unperceived until problems would aggravate, can be identified in the project. Hence, the project manager can take better advantage offered by System Dynamics modeling, while enhancing the performance of the existing risk management process.
    Project scope change creates a series of effects and causes cost overruns that affect the schedule and lower performance in the long run. This research presents a risk dynamics framework that displays a trade-off process between cost and schedule and thereby attempts to revise the contingency cost and keep it under control. A pipeline work package is modeled and discussed.

    Table of contents Chapter 1 Introduction 1 1.1 Background 1 1.2 Research Motivation 2 1.3 Research Objective 3 1.4 Research Method 4 1.5 Research Framework 6 Chapter 2 Literature Review 8 2.1 Project scope changes 8 2.1.1 Causes of Project Scope Changes 8 2.1.2 The Process of Scope Change Control 10 2.2 Contingency Cost 10 2.3 System Dynamics Method 13 2.3.1 Definitions of System Dynamics 13 2.3.2 The Negative and Positive Feedback Loop Structures 14 2.3.3 The Basic Principle of System Dynamics 14 2.3.4 System Dynamics Implementation Procedures 16 2.4 System Dynamics for Project Management 17 2.5 The SYDPIM Framework 21 2.6 Using SYDPIM to Manage Risk Dynamics within the PMBOK Framework 21 Chapter 3 Research Design 24 3.1 Conceptual Framework 24 3.2 Causal Loop Diagrams 27 3.3 Building The Risk Dynamic Model 31 Chapter 4 Modeling Pipeline Work Package 32 4.1 System Dynamic Tool-Stella 32 4.2 Case Background 33 4.3 Model Pipeline Work Package 35 4.4 Concrete Tests on Building Confidence 39 4.5 Model Validation and Calibration 40 4.6 Test the Impact of Policies 49 Chapter 5 Conclusions and Suggestions 57 5.1 Research Conclusions 57 5.2 Future Research Direction 58 Reference 59 Appendix: Equations of SD for pipeline work case 62 Figures Figure 1-1 Overview of the SYDPIM process logic 5 Figure 1-2 The framework of this thesis 7 Figure 2-1 A standard system dynamics flow diagram 15 Figure 2-2 Forester’s seven stage of implementation 16 Figure 2-3 Tao’s system dynamics approach 17 Figure 3-1 Overview of project management 24 Figure 3-2 The risk dynamics model framework 25 Figure 3-3 The rework cycle 26 Figure 3-4 Approved process to the scope change project 29 Figure 3-5 Adjustment process between cost and schedule trade-off 30 Figure 4-1 Model pipeline work package 38 Figure 4-2 Contingency cost on different level of scope change 42 Figure 4-3 No change at each period (0% change) 43 Figure 4-4 100% change at the design phase and 0% at pipe work phase 44 Figure 4-5 Contents of contingency cost (100% at design phase and 0% at pipe work phase) 44 Figure 4-6 75% change at design phase and 20% change at pipe work phase 47 Figure 4-7 Contents of contingency cost (75% change at design phase and 20% at pipe work phase) 47 Figure 4-8 Change of overtime policy 50 Figure 4-9 Change workforce policy 51 Figure 4-10 Change of delivery way policy 52 Figure 4-11 Canceling of delivery way policy 52 Figure 4-12 Change of skipping on QA 54 Tables Table 2-1 Application of system dynamics to project management 19 Table 4-1 Possible contingency items 40 Table 4-2 Contents of contingency cost data 42 Table 4-3 100% at design phase and 0% at pipe work phase 45 Table 4-4 Contents of each contingency cost item (100% at design phase and 0% at pipe work phase) 45 Table 4-5 75% at design phase and 20% at pipe work phase 48 Table 4-6 Contents of each contingency cost item (75% at design phase and 20% at pipe work phase) 48 Table 4-7 Change of overtime policy 50 Table 4-8 Change workforce policy 51 Table 4-9 Change of delivery way policy 53 Table 4-10 Canceling of delivery way policy 53 Table 4-11 Change of Skipping on QA 55

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    Chinese literature
    1. 陶在樸, “系統動態學”, 五南出版社, 1999

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