Reworking in developing software exists widely in IT project management. But the current estimating methods on project duration cannot deal well with this problem. In this paper, some key concepts, such as adjusted activity, adjusted GERT network, expected project duration, expected critical path, are firstly defined. Then authors study estimating method on project duration for different rework...

Decision making is an important issue in business and project management that assists finding the optimal alternative from a number of feasible alternatives. Decision making requires adequate consideration of uncertainty in projects. In this paper, in order to address uncertainty of project environments, interval type-2 fuzzy sets (IT2FSs) are used. In other words, the rating of each alternativ...

Prespecified meetings between teachers and parents have to be scheduled. All meetings have the same duration. The goal is in finding a schedule minimizing the total time and the parents’ idle times. This NP-hard problem is addressed by solving first a sequence of weighted assignment problems and then performing a large scale neighborhood search based on finding negative cost cycles and shortest...

Established techniques like the Critical Path Method and Linear Scheduling Method are activity centered and exhibit schedules statically, which impedes their ability to plan and control projects holistically. Scheduling therefore should be enhanced by incorporating new capabilities of measuring and displaying the dynamic nature of projects. In another technical field that employs a time-space c...

Delays in completing the Kelapa Dua shop-house construction project at CV. Mentari permai is a problem that often arises and affects overall work. The purpose of this research to determine critical path, calculate costs incurred with duration initial accelerated work percentage achievement shop Mutia Enchantment Nature. To overcome these delays, several control methods are used management. Crit...

This paper challenges the conventional thinking, by proposing a new way to understand and use the term critical-path. At stake is much more than a semantic discussion of terminology. Numerous surveys have confirmed that CPM schedules are used for two primary reasons: project management and dispute resolution. To support either use, the critical-path must be identifiable in a consistent, objecti...

This paper addressed a Flexible Job shop Scheduling Problem (FJSP) with the objective of minimization of maximum completion time (Cmax) which job splitting or lot streaming is allowed. Lot streaming is an important technique that has been used widely to reduce completion time of a production system. Due to the complexity of the problem; exact optimization techniques such as branch and bound alg...

We consider the problem of dynamically allocating scarce resources to multiple projects in a project-oriented production system such as a naval shipyard. We formulate axioms governing the relationship between resource allocations and work progress of aggregate project activities, from which a model of project execution is derived. This model is more accurate than models which represent aggregat...

To the best of our knowledge, there is no method in the literature to find the fuzzy optimal solution of fully fuzzy critical path (FFCP) problems i.e., critical path problems in which all the parameters are represented by LR flat fuzzy numbers. In this paper, a new method is proposed for the same. Also, it is shown that it is better to use JMD representation of LR flat fuzzy numbers in the pro...