Method And System For Determining The Relative Priority Of In-Process Project Work Tasks And Focusing Improvements In Task Time Estimates

• US 20140032257A1
• Filed: 11/13/2012
• Published: 01/30/2014
• Est. Priority Date: 06/21/2010
• Status: Abandoned Application

• Current Assignee: Avraham Y. Goldratt Institute LP
• Original Assignee: Avraham Y. Goldratt Institute LP
• Inventors: Houle, Dale T.
• Application Number:
  US13/674,947
• Publication Number:
  US 20140032257A1
• Time in Patent Office: Days
• US Class Current: 705/7.25
• CPC Class Codes: G06Q 10/06315 Needs-based resource requirements planning or analysis

Abstract

A method for determining the relative priority of assigned or available-to-be-assigned project tasks in a pre-defined project network and focusing improvements in task time estimates includes the steps of providing a computer system comprising a processor, a memory device and a user interface, utilizing the user interface to select a project that has a predefined project network, identifying all of the Critical Chain (CC) tasks, its corresponding Feeding Path tasks and any user defined Contractual Milestone path tasks of the selected project along the predefined project network, and identifying the amount of Allocated Time Buffer (ATB) assigned to each of the Critical Chain (CC) tasks, its corresponding Feeding Path tasks and any user defined Contractual Milestone Path tasks to account for variability in the time required to complete the Required Work Content (RWC) for each task of the selected project along the predefined project network.

Claims

1. A method for determining the relative priority of assigned or available-to-be-assigned project tasks in a pre-defined project network and focusing improvements in task time estimates, comprising the steps of:

providing a computer system comprising a processor, a memory device and a user interface;

utilizing the user interface to select a project that has a predefined project network;

identifying all of the Critical Chain (CC) tasks, its corresponding Feeding Path tasks and any user defined Contractual Milestone path tasks of the selected project along the predefined project network;

identifying the amount of Allocated Time Buffer (ATB) assigned to each of the Critical Chain (CC) tasks, its corresponding Feeding Path tasks and any user defined Contractual Milestone path tasks to account for variability in the time required to complete the Required Work Content (RWC) for each task of the selected project along the predefined project network;

utilizing the processor to determine the Required Work Content (RWC) to complete each of the Critical Chain (CC) tasks, its corresponding Feeding Path tasks and any user defined Contractual Milestone path tasks of the selected project along the predefined project network;

utilizing the processor to determine the total amount of time T_TOTAL required to complete all of the Critical Chain (CC) tasks, its corresponding Feeding Path tasks and any user defined Contractual Milestone path tasks of the selected project along the predefined project network;

utilizing the processor to determine a total planned Time Buffer (TB) for the movement of the selected project through all of the Critical Chain (CC) tasks, its corresponding Feeding Path tasks and any user defined Contractual Milestone path tasks of the selected project along the predefined project network and storing said determined total planned Time Buffer (TB) in the memory device;

utilizing the total amount of time T_TOTAL required to complete all of the Required Work Content (RWC) for Critical Chain (CC) tasks in the project network in conjunction with the total Time Buffer (TB) for the Critical Chain to determine a time to complete (T_COMPLETE) the selected project.

utilizing the processor to capture resource assignment data at regular Reporting Intervals (RI) that relates to the selected project and the assignment of resources to tasks available to be worked on in the predefined project network;

utilizing the processor to capture task update data at regular Reporting Intervals (RI) that relates to the selected project and the amount of work remaining to complete each task assigned to a resource to be worked on in the predefined project network;

utilizing the processor to capture task update data at regular Reporting Intervals (RI) that relates to the selected project and the amount of time a task available to be assigned to work on in the predefined project network will be delayed;

utilizing the processor to compute the Planned Time Buffer Remaining (TBRP) at each of the Critical Chain (CC) tasks, its corresponding Feeding Path tasks and any user defined Contractual Milestone path tasks of the selected project along the predefined project network;

utilizing the processor to process the captured task update data, for the selected project, to determine the expected downstream Time Buffer Remaining (TBR) for the project'"'"'s Critical Chain (CC), its corresponding Feeding Paths and any user defined Contractual Milestones along the predefined project network;

utilizing the processor to process the captured task update data, for the selected project, to determine the expected completion of the selected project along the predefined project network and comparing the expected completion of the selected project to planned completion of the selected project through the predefined project network;

utilizing the processor to process the determined amount of downstream Time Buffer Remaining (TBR) in relation to the total planned Time Buffer (TB) for the selected project'"'"'s Critical Chain (CC), its corresponding Feeding Paths and any user defined Contractual Milestones at the completion of each selected project;

utilizing the processor to compare the determined amount of downstream Time Buffer Remaining (TBR) to the planned amount of downstream Time Buffer Remaining (TBRP) for each assigned or available-to-be-assigned task in the selected project'"'"'s Critical Chain (CC), its corresponding Feeding Paths and any user defined Contractual Milestones and computing the ratio TBR/TBRP wherein said ratio yields a Buffer Recovery Percent (BRP) for the selected project; and

utilizing the processor to determine the Buffer Recovery Percent (BRP) for each assigned or available-to-be-assigned task in every selected project'"'"'s Critical Chain (CC), its corresponding Feeding Paths and any user defined Contractual Milestones at Regular Intervals (RI) as the assigned or available-to-be-assigned task work toward completion in the predefined project network and setting relative priorities to all the assigned or available-to-be-assigned tasks wherein the task with the lowest Buffer Recovery Percent (BRP) has the highest priority.

2. The method according to claim 1 further comprising the step of utilizing the processor to computer a time Buffer Consumption Ratio (BCR) based on the determined amount of downstream Time Buffer Remaining (TBR) and the total planned Time Buffer (TB) for the project'"'"'s Critical Chain (CC), its corresponding Feeding Paths and any user defined Contractual Milestones at the completion of each selected project.

3. The method according to claim 1 wherein the step of capturing resource assignment and task update data for the selected project comprises the steps of:

monitoring the selected project as its tasks are assigned and work completed along the predefined project network;

capturing resource assignment and task update data that represents the selected project'"'"'s task assignments, task delays and task updates in terms of work remaining and task completed along the predefined project network; and

storing in the memory device the resource assignment and task update data.

4. The method according to claim 1 wherein the step of utilizing the processor to compute the Planned Time Buffer Remaining (TBRP) at each task of the selected project'"'"'s Critical Chain (CC), its corresponding Feeding Paths and any user defined Contractual Milestones comprises the steps of:

retrieving the total planned Time Buffer (TB) for the selected project'"'"'s Critical Chain (CC), its corresponding Feeding Paths and any user defined Contractual Milestones;

retrieving the Allocated Time Buffer (ATB) for each task in the selected project'"'"'s Critical Chain (CC), its corresponding Feeding Paths and any user defined Contractual Milestones; and

utilizing the processor to compute the Planned Time Buffer Remaining (TBRP) for each task in the selected project'"'"'s Critical Chain (CC), its corresponding Feeding Paths and any user defined Contractual Milestones paths by the steps;

computing the summation of the ATBs of all of the tasks preceding the task for which the TBRP is being computed, and

subtracting said summation of the ATBs from the total planned Time Buffer (TB) for the selected project'"'"'s Critical Chain (CC) Project Buffer (PB), Critical Chain (CC) Feeding Buffer (FB) or Contractual Milestone Buffer (CMSB) it feeds into in the predefined project network.

5. The method according to claim 4 further comprising the steps of, for each selected project:

retrieving a project start time or finish time for each selected project that enters the in-process work flow;

utilizing the processor to compute, for each selected project, the duration of time T_D within which it is scheduled to be completed, the duration of time T_D being equal to the selected project'"'"'s start time plus the time to complete (T_COMPLETE) associated with the selected project or the selected project'"'"'s finish time minus the time to complete (T_COMPLETE) associated with the selected project;

retrieving, for each selected project, at Regular Intervals (RI) the amount of work time remaining to complete each assigned task and the amount of delay time given to each task available to be assigned but not assigned; and

utilizing the processor to determine, for each selected project, a Time Buffer Remaining (TBR) for each task assigned or available to be assigned in the selected project'"'"'s Critical Chain (CC), its corresponding Feeding Paths and any user defined Contractual Milestones.

6. The method according to claim 5 wherein the step of determining the Time Buffer Remaining (TBR) at each Reporting Point (RP) comprises the steps of:

establishing for each task a Daily Work Calendar (DWC) which is used for assigning Required Work Content (RWC) and task Allocated Time Buffer (ATB);

establishing the planned start date-time and planned finish date-time for each task in the selected project'"'"'s Critical Chain (CC), its corresponding Feeding Paths and any user defined Contractual Milestones Paths in accordance with each selected project'"'"'s scheduled start time or finish time, and each task'"'"'s Daily Work Calendar (DWC), task Required Work Content (RWC) and task Allocated Time Buffer (ATB);

utilizing the processor to compute the amount of Time Buffer Remaining (TBR), for each assigned and available-to-be assigned task for the selected project'"'"'s Critical Chain (CC), Feeding Path and Contractual Milestone Buffers by;

summing from the assigned or available to be assigned task the task work time remaining for assigned tasks or the designated delay time for delayed tasks plus the task times of the tasks not yet assigned from the assigned or delayed task through the last task feeding into the selected project'"'"'s Critical Chain (CC) Project Buffer (PB), Feeding Path Buffer (FB) and Contractual Milestone Buffer (CMSB) to determine the projected completion date of the selected project'"'"'s Critical Chain (CC), Feeding and Contractual Milestone paths in the predefined project network;

utilizing the processor to determine the amount of Time Buffer Remaining (TBR) for paths feeding into the Critical Chain (CC) Project Buffer (PB) and the Contractual Milestone Buffer (CMSB) as the difference between the selected project'"'"'s projected completion date and the selected project'"'"'s planned completion date; and

utilizing the processor to determine the amount of Time Buffer Remaining (TBR) for paths feeding into the selected project'"'"'s Critical Chain (CC) Feeding Buffers (FB) as the difference between the selected project'"'"'s projected completion date and the selected project'"'"'s planned completion date plus any Execution Gap resulting from Critical Chain (CC) tasks taking longer than planned to complete their RWC.

7. The method according to claim 5 further comprising the step of utilizing the processor to process the downstream Time Buffer Remaining (TBR) and the planned Time Buffer (TB) to provide a Buffer Consumption Ratio (BCR) for the selected project'"'"'s Critical Chain (CC), its corresponding Feeding Paths and any user defined Contractual Milestones at the completion of each selected project.

8. The method according to claim 7 wherein the step of utilizing the processor to process the downstream Time Buffer Remaining (TBR) and the planned Time Buffer (TB) to provide a Buffer Consumption Ratio (BCR) comprises the step of implementing the mathematical operation BCR=TBR/TB.

9. The method according to claim 8 further comprising the steps of:

maintaining, for each selected project, an ongoing record of the Buffer Consumption Ratio (BCR) for the selected project'"'"'s corresponding Critical Chain (CC), Feeding Paths and Contractual Milestones for each selected project completed (BCR_FINISH); and

maintaining, for each completed project, an ongoing record of the Buffer Consumption Ratio (BCR) for the selected project'"'"'s corresponding Critical Chain (CC), Feeding Paths and Contractual Milestones for each selected project completed (BCR_FINISH).

10. The method according to claim 9 further comprising the step of analyzing the BCR_FINISH records for each selected project to rank the corresponding Critical Chain (CC), Feeding Path or Contractual Milestones Time Buffers (TB) according to the amount of negative variance occurring for increasing the size of the Time Buffer (TB) and/or to focus improvements in task time estimates.

11. The method according to claim 10 further comprising the step of analyzing the BCR_FINISH records for each selected project to rank the corresponding Critical Chain (CC), Feeding Path or Contractual Milestones Time Buffers (TB) according to the amount of positive variance occurring for decreasing the size of the Time Buffer (TB) and/or to focus improvements in task time estimates.

12. A system for determining the relative priority of in-process project work, either assigned or available-to-be-assigned project tasks, and focusing improvements in task time estimates, comprising:

a computer processor operable to execute computer program instructions; and

a computer memory operable to store computer program instructions executable by the computer processor, for performing the steps of;

selecting a project that has a predefined project network;

identifying all of the Critical Chain (CC) tasks, its corresponding Feeding Path tasks and any user defined Contractual Milestone path tasks of the selected project along the predefined project network;

identifying the amount of Allocated Time Buffer (ATB) assigned to each of the Critical Chain (CC) tasks, its corresponding Feeding Path tasks and any user defined Contractual Milestone path tasks to account for variability in the time required to complete the Required Work Content (RWC) for each task of the selected project along the predefined project network;

determining the Required Work Content (RWC) to complete each of the Critical Chain (CC) tasks, its corresponding Feeding Path tasks and any user defined Contractual Milestone path tasks of the selected project along the predefined project network;

determining the total amount of time T_TOTAL required to complete all of the Critical Chain (CC) tasks, its corresponding Feeding Path tasks and any user defined Contractual Milestone path tasks of the selected project along the predefined project network;

determining a total planned Time Buffer (TB) for the movement of the selected project through all of the Critical Chain (CC) tasks, its corresponding Feeding Path tasks and any user defined Contractual Milestone path tasks of the selected project along the predefined project network and storing said determined total planned Time Buffer (TB) in the memory device;

utilizing the total amount of time T_TOTAL required to complete all of the Required Work Content (RWC) for Critical Chain (CC) tasks in the project network in conjunction with the total Time Buffer (TB) for the Critical Chain to determine a time to complete (T_COMPLETE) the selected project.

capturing resource assignment data at regular Reporting Intervals (RI) that relates to the selected project and the assignment of resources to tasks available to be worked on in the predefined project network;

capturing task update data at regular Reporting Intervals (RI) that relates to the selected project and the amount of work remaining to complete each task assigned to a resource to be worked on in the predefined project network;

capturing task update data at regular Reporting Intervals (RI) that relates to the selected project and the amount of time a task available to be assigned to work on in the predefined project network will be delayed;

computing the Planned Time Buffer Remaining (TBRP) at each of the Critical Chain (CC) tasks, its corresponding Feeding Path tasks and any user defined Contractual Milestone path tasks of the selected project along the predefined project network;

processing the captured task update data, for the selected project, to determine the expected downstream Time Buffer Remaining (TBR) for the project'"'"'s Critical Chain (CC), its corresponding Feeding Paths and any user defined Contractual Milestones of the selected project along the predefined project network;

processing the captured task update data, for the selected project, to determine the expected completion of the selected project along the predefined project network and comparing the expected completion of the selected project to planned completion of the selected project through the predefined project network;

processing the determined amount of downstream Time Buffer Remaining (TBR) in relation to the total planned Time Buffer (TB) for the selected project'"'"'s Critical Chain (CC), its corresponding Feeding Paths and any user defined Contractual Milestones at the completion of each selected project;

comparing the determined amount of downstream Time Buffer Remaining (TBR) to the Planned amount of downstream Time Buffer Remaining (TBRP) for each assigned or available-to-be-assigned task in the selected project'"'"'s Critical Chain (CC), its corresponding Feeding Paths and any user defined Contractual Milestones and computing the ratio TBR/TBRP wherein said ratio yields a Buffer Recovery Percent (BRP) for the selected project; and

determining the Buffer Recovery Percent (BRP) for each assigned or available-to-be-assigned task in every selected project'"'"'s Critical Chain (CC), its corresponding Feeding Paths and any user defined Contractual Milestones at Regular Intervals (RI) as the assigned or available-to-be-assigned task work toward completion in the predefined project network and setting relative priorities to all the assigned or available-to-be-assigned tasks wherein the task with the lowest Buffer Recovery Percent (BRP) has the highest priority.

13. A computer-executable program product for determining the relative priority of in-process project work and focusing improvements in task time estimates, the computer-executable program product comprising computer executable instructions tangibly embodied on a non-transitory computer readable medium that when executed by the computer perform the method steps comprising:

selecting a project that has a predefined project network;

identifying all of the Critical Chain (CC) tasks, its corresponding Feeding Path tasks and any user defined Contractual Milestone path tasks of the selected project along the predefined project network;

identifying the amount of Allocated Time Buffer (ATB) assigned to each of the Critical Chain (CC) tasks, its corresponding Feeding Path tasks and any user defined Contractual Milestone path tasks to account for variability in the time required to complete the Required Work Content (RWC) for each task of the selected project along the predefined project network;

utilizing the processor to determine the Required Work Content (RWC) to complete each of the Critical Chain (CC) tasks, its corresponding Feeding Path tasks and any user defined Contractual Milestone path tasks of the selected project along the predefined project network;

utilizing the processor to determine the total amount of time T_TOTAL required to complete all of the Critical Chain (CC) tasks, its corresponding Feeding Path tasks and any user defined Contractual Milestone path tasks of the selected project along the predefined project network;

utilizing the processor to determine a total planned Time Buffer (TB) for the movement of the selected project through all of the Critical Chain (CC) tasks, its corresponding Feeding Path tasks and any user defined Contractual Milestone path tasks of the selected project along the predefined project network and storing said determined total planned Time Buffer (TB) in the memory device;

utilizing the total amount of time T_TOTAL required to complete all of the Required Work Content (RWC) for Critical Chain (CC) tasks in the project network in conjunction with the total Time Buffer (TB) for the Critical Chain to determine a time to complete (T_COMPLETE) the selected project.

utilizing the processor to capture resource assignment data at regular Reporting Intervals (RI) that relates to the selected project and the assignment of resources to tasks available to be worked on in the predefined project network;

utilizing the processor to capture task update data at regular Reporting Intervals (RI) that relates to the selected project and the amount of work remaining to complete each task assigned to a resource to be worked on in the predefined project network;

utilizing the processor to capture task update data at regular Reporting Intervals (RI) that relates to the selected project and the amount of time a task available to be assigned to work on in the predefined project network will be delayed;

utilizing the processor to compute the Planned Time Buffer Remaining (TBRP) at each of the Critical Chain (CC) tasks, its corresponding Feeding Path tasks and any user defined Contractual Milestone path tasks of the selected project along the predefined project network;

utilizing the processor to process the captured task update data, for the selected project, to determine the expected downstream Time Buffer Remaining (TBR) for the project'"'"'s Critical Chain (CC), its corresponding Feeding Paths and any user defined Contractual Milestones along the predefined project network;

utilizing the processor to process the captured task update data, for the selected project, to determine the expected completion of the project along the predefined project network and comparing the expected completion of the selected project to planned completion of the selected project through the predefined project network;

utilizing the processor to process the determined amount of downstream Time Buffer Remaining (TBR) in relation to the total planned Time Buffer (TB) for the project'"'"'s Critical Chain (CC), its corresponding Feeding Paths and any user defined Contractual Milestones at the completion of each selected project;

utilizing the processor to compare the determined amount of downstream Time Buffer Remaining (TBR) to the planned amount of downstream Time Buffer Remaining (TBRP) for each assigned or available-to-be-assigned task in the selected project'"'"'s Critical Chain (CC), its corresponding Feeding Paths and any user defined Contractual Milestones and computing the ratio TBR/TBRP wherein said ratio yields a Buffer Recovery Percent (BRP) for the selected project; and

utilizing the processor to determine the Buffer Recovery Percent (BRP) for each assigned or available-to-be-assigned task in every selected project'"'"'s Critical Chain (CC), its corresponding Feeding Paths and any user defined Contractual Milestones at Regular Intervals (RI) as the assigned or available-to-be-assigned task work toward completion in the predefined project network and setting relative priorities to all the assigned or available-to-be-assigned tasks wherein the task with the lowest Buffer Recovery Percent (BRP) has the highest priority.