in this study, we present a mrcpsp/max (multi-mode resource-constrained project scheduling problem with minimum and maximum time lags) model with minimization tardiness costs and maximization earliness rewards of activities as objective. the proposed model is nearby to real-world problems and has wide applications in various projects. this problem is not available in the literature exactly and ...

Planning consists of selecting a course of actions to achieve the desired goals, and assigning enough resources to ensure successful execution of the chosen actions. Most planners do not distinguish these phases, and do both action selection and resource assignment using the same algorithm. We will show that this strategy severely curtails the scale-up potential of existing planners, including ...

In this paper, we proposed an algorithm for solving the problem of task scheduling using particle swarm optimization algorithm, with changes in the Selection and removing the guide and also using the technique to get away from the bad, to move away from local extreme and diversity. Scheduling algorithms play an important role in grid computing, parallel tasks Scheduling and sending them to ...

In this paper, we proposed an algorithm for solving the problem of task scheduling using particle swarm optimization algorithm, with changes in the Selection and removing the guide and also using the technique to get away from the bad, to move away from local extreme and diversity. Scheduling algorithms play an important role in grid computing, parallel tasks Scheduling and sending them to ...

organizations need to evaluate project proposals and select the ones that are the most effective in reaching the strategic goals by considering sustainability issue. in order to enhance the effectiveness and the efficiency of project oriented organizations, in this paper a new multi-objective decision making (modm) approach of sustainable project portfolio selection is proposed which applies in...

In this paper, we describe a methodology for reactively revising schedules in response to unexpected events. The approach is based on recognition of constraint conflicts in the existing schedule. Alternative scheduling actions, each offering selective advantages for conflict resolution, are available for resolving these conflicts. We present a model for action selection based on an analysis of ...

Planning consists of an action selection phase where actions are selected and ordered to reach the desired goals, and a resource allocation phase where enough resources are assigned to ensure the successful execution of the chosen actions. Most planners do not distinguish between these phases, and perform both action selection and resource assignment employing the same algorithm. We shall show ...