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___________________________________________________________________________ Operations Research Jan Fábry Project Management
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___________________________________________________________________________ Operations Research Jan Fábry Project Activity 1 Activity 2 Activity 3 Activity 4 Activity 6 Activity 7 Activity 5
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Project Management ___________________________________________________________________________ Operations Research Jan Fábry Activity 1 Activity 2 Activity 3 Activity 4 Activity 6 Activity 7 Activity 5 Activity Node NETWORK – graphical representation of the project
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Project Management ___________________________________________________________________________ Operations Research Jan Fábry Activity Arc NETWORK – graphical representation of the project 1 3 2 4 5 6 1 3 4 6 5 8 2 2 6 7 ACT 1 ACT 11 ACT 2 ACT 3 ACT 4 ACT 5 ACT 6 ACT 7 ACT 8 ACT 9 ACT 10
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___________________________________________________________________________ Operations Research Jan Fábry Event 1 2 3 Activity A Design a car Activity B Make a prototype Start point of A Finish point of A Start point of B Finish point of B Project Management
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___________________________________________________________________________ Operations Research Jan Fábry 1 2 3 Activity A Design a car Activity B Make a prototype Project Management Activity A immediately PRECEDES activity B Activity B immediately SUCCEEDS activity A
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___________________________________________________________________________ Operations Research Jan Fábry Project Management Activity A is the predecessor of Activity B and C 1 2 3 Activity A Design a car Activity B Make a prototype 4 Activity C Computer presentation
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___________________________________________________________________________ Operations Research Jan Fábry Project Management 1 2 3 4 Activity A Design a car Activity B Make a prototype Activity C Computer presentation 5 Activity E Prototype test Activity D Prototype presentation Dummy activity Activity E (Prototype test) follows Activity B Activity D (Prototype presentation) follows Activity B and C
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___________________________________________________________________________ Operations Research Jan Fábry Project Management - time Activity Requirements - money (cost) - machines - people - material
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___________________________________________________________________________ Operations Research Jan Fábry Project Management Phases of Project Management Network Planning Controlling Scheduling Start and finish times for each activity Finish time of project Periodic progress reports
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___________________________________________________________________________ Operations Research Jan Fábry Project Management Methods Deterministic time Critical Path Method (CPM) Probabilistic time Program Evaluation Review Technique (PERT)
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___________________________________________________________________________ Operations Research Jan Fábry CPM Project Management
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___________________________________________________________________________ Operations Research Jan Fábry Project Management CPM Finish time of the project Start and finish times of each activity A critical path consisting of critical activities Non-critical activities and their possible delay
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___________________________________________________________________________ Operations Research Jan Fábry Project Management Example - Music DM, Inc. Christmas compilation of Czech carols 11 activities: 1) Songs Selection 2) Mastering 3) Promotion Material Elaborating CPM
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___________________________________________________________________________ Operations Research Jan Fábry Project Management Example - Music DM, Inc. 11 activities: 4) Customers Analysis 5) Promotion Material Production 6) Make CD Copies 7) Customers Selection CPM
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___________________________________________________________________________ Operations Research Jan Fábry Project Management Example - Music DM, Inc. 11 activities: 8) Data to Printing House 9) Promotion Material to Printing House 10) Laser Print 11) Mailing CPM
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___________________________________________________________________________ Operations Research Jan Fábry Project Management Example - Music DM, Inc. Activity DescriptionDurationPredecessors A Songs Selection 15None BMastering8A C Promotion Material Elaborating 6A D Customers Analysis 7A E Promotion Material Production 4 C, D F Promotion Material to PH 5E G Customers Selection 3D CPM
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___________________________________________________________________________ Operations Research Jan Fábry Project Management Example - Music DM, Inc. Activity DescriptionDurationPredecessors H Make CD Copies 12 B, D I Data to PH 3G J Laser Print 9 F, I KMailing8 H, J All the envelopes have to be delivered until December 12 Objective: set the starting date of the project CPM
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___________________________________________________________________________ Operations Research Jan Fábry Project Management Example - Music DM, Inc. Solution - CPM 1) Construct the network 2) Event analysis - forward pass - backward pass 3) Activity analysis - critical activities - noncritical activities CPM
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___________________________________________________________________________ Operations Research Jan Fábry Project Management Example - Music DM, Inc. 1) Construct the network One start node & one end node Each activity one arc Two nodes are connected maximally by one arc CPM
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___________________________________________________________________________ Operations Research Jan Fábry Project Management Example - Music DM, Inc. 1) Construct the network i j i < j 2 3 3 2 CPM
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___________________________________________________________________________ Operations Research Jan Fábry Project Management Example - Music DM, Inc. Activity DescriptionDurationPredecessors A Songs Selection 15None BMastering8A C Promotion Material Elaborating 6A D Customers Analysis 7A E Promotion Material Production 4 C, D F Promotion Material to PH 5E G Customers Selection 3D CPM
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___________________________________________________________________________ Operations Research Jan Fábry Project Management Example - Music DM, Inc. Activity DescriptionDurationPredecessors H Make CD Copies 12 B, D I Data to PH 3G J Laser Print 9 F, I KMailing8 H, J CPM
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___________________________________________________________________________ Operations Research Jan Fábry Project Management Example - Music DM, Inc. 1 2 4 3 5 6 9 7 10 8 A B D C D1D1 E FH D2D2 GI J KCPM
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___________________________________________________________________________ Operations Research Jan Fábry Project Management Example - Music DM, Inc. 1 2 4 3 5 6 9 7 10 8 15 8 7 6 0 4 512 0 33 9 8CPM
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___________________________________________________________________________ Operations Research Jan Fábry Project Management Example - Music DM, Inc. 2) Event analysis - forward pass The earliest event time for a node is the earliest time at which all the preceding activities have been completed. j ET j CPM
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___________________________________________________________________________ Operations Research Jan Fábry Project Management Example - Music DM, Inc. 2) Event analysis - forward pass ET 1 ET 1 ET 2 ET 2 ET 3 ET 3 … ET n Ascending order: The earliest event time for completing a project is the earliest time of the last event. T = ET n CPM
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___________________________________________________________________________ Operations Research Jan Fábry Project Management Example - Music DM, Inc. 2) Event analysis - backward pass The latest event time for a node is the latest time at which the event can occur without delaying the determined completion time of the project. i LT i CPM
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___________________________________________________________________________ Operations Research Jan Fábry Project Management Example - Music DM, Inc. 2) Event analysis - backward pass LT 1 LT 2 LT 3 … LT n Descending order: The latest event time for completing a project can be set in the planning process or can be considered as the earliest event time for completing a project. LT n = T = ET n or LT n = T PL > T CPM
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___________________________________________________________________________ Operations Research Jan Fábry Project Management Example - Music DM, Inc. 3) Activity analysis Total float: i LT i ET i j ET j LT j t ij CPM
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___________________________________________________________________________ Operations Research Jan Fábry Project Management Example - Music DM, Inc. 3) Activity analysis Critical activity: TF ij = 0 TF ij = T PL - T if LT n = T = ET n if LT n = T = ET n if LT n = T PL > T if LT n = T PL > T Noncritical activity: TF ij > 0 TF ij > T PL - T if LT n = T = ET n if LT n = T = ET n if LT n = T PL > T if LT n = T PL > T CPM
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___________________________________________________________________________ Operations Research Jan Fábry Project Management Example - Music DM, Inc. 3) Activity analysis Critical path: 1 2 4 3 5 6 9 7 10 8 A B D C D1D1 E F H D2D2 GI J KCPM
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___________________________________________________________________________ Operations Research Jan Fábry Project Management Example - Music DM, Inc. 3) Activity analysis Noncritical activity 1) Start of the activity can be postponed 2) Duration of the activity can be extended 3) Combination of 1 and 2 CPM
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