In the recent decade, numerous researchers have proposed extended version of scheduling problem named as multimode resource constrained scheduling problem (MMRCSP), claiming it to be a more practical way of capturing production characteristics. However, this flexibility comes with increased complexity. The present work proposes a framework for such multimode scheduling problems in order to prov...

critical path method (cpm) is one of the most popular techniques used by construction practitioners for construction project scheduling since the 1950s. despite its popularity, cpm has a major shortcoming, as it is schedule based on two impractical acceptance that the project deadline is not bounded and that resources are unlimited. the analytical competency and computing capability of cpm thus...

In this paper we use genetic algorithms (GA) to deal with the ResourceConstrained Project Scheduling Problem (RCPSP ). We introduce a priority value encoding (representation) to implement the GA for RCPSP . First, we follow up the approach of Alcaraz and Maroto [1] to introduce an additional component in the encoding to indicate the scheduling mode (forward or backward) used to generate the cor...

In this paper, we present a genetic algorithm (GA) for optimization of a multi-mode resource constrained time cost trade off (MRCTCT) problem. The proposed GA, each activity has several operational modes and each mode identifies a possible executive time and cost of the activity. Beyond earlier studies on time-cost trade-off problem, in MRCTCT problem, resource requirements of each execution mo...

NP-completeness and other complexity proofs often merely state that the problem at hand is a generalization of some other intractable problem. This proof technique relies on the widely accepted assumption that complexity results hold regardless of the model formulation used to represent the problem and the encoding used to represent its instances. However, recent results indicate that these ass...

When scheduling its audit-staff, the management of an auditing firm encompasses a number of different decisions which differ markedly in terms of organizational echelon involved, length of the planning horizon and the planning periods, degree of aggregation of the audit tasks, degree of detail of the required information, and decision objective. We outline an hierarchical planning approach for ...

Complexity proofs often restrict themselves to stating that the problem at hand is a generalization of some other intractable problem. This proof technique relies on the widely accepted assumptions that complexity results hold regardless of the model formulation used to represent the problem and the encoding used to represent its instances. However, recent results indicate that these assumption...

This abstract introduces a novel approach to intelligently select appropriate modes for each activity in the multi mode resource constrained project scheduling problem. The mode of an activity determines its duration and the resources that it requires. In order to obtain a good (or optimal) makespan, finding an appropriate mode for each activity is most important. The approach integrates differ...

Construction companies are required to employ effective methods of project planning and scheduling in today's competitive environment. Time cost critical factors success, they can vary based on the type amount resources used for activities, such as labor, tools, materials. In addition, resource leveling strategies that limit fluctuations a project's consumption also affect time cost. The multi-...

In this paper a novel modelling and solving method has been developed to address the so-called resource constrained project scheduling problem (RCPSP) where project tasks have multiple modes and also the preemption of activities are allowed. To solve this NP-hard problem, a new general optimization via simulation (OvS) approach has been developed which is the main contribution of the current re...