This is the second part of a paper considering the multi-mode resource-constrained project scheduling problem. The rst part presents an exact solution procedure for solving several variants of the multi-mode resource-constrained project scheduling problem including the commonly known makespan minimization problem. The basic scheme is enhanced by powerful search tree reduction schemes considerab...

This paper proposes a mixed integer programming model for single-item capacitated lot-sizing problem with setup times, safety stock, demand shortages, outsourcing and inventory capacity. Due to the complexity of problem, three meta-heuristics algorithms named simulated annealing (SA), vibration damping optimization (VDO) and harmony search (HS) have been used to solve this model. Additionally, ...

The vehicle routing problem (VRP) is an important problem in the field of logistics management. As an NP-hard problem, the VRP real world sized instances cannot be solved to optimality within reasonable times. This research aims to develop a two-stage ant colony optimization (TACO) algorithm, which possesses a two-stage solution construction rule, to solve the large scale vehicle routing proble...

This paper presents a hybrid algorithm for solving a timetabling problem, which is commonly encountered in many universities. The problem combines both teacher assignment and course scheduling problems simultaneously, and is presented as a mathematical programming model. However, this problem becomes intractable and it is unlikely that a proven optimal solution can be obtained by an integer pro...

A FGM layer sandwiched between two isotropic layers weakened by several interface cracks under antiplane loading is studied. This paper examines the modelling of cracks by distribution of strain nuclei along crack lines. In this investigation, the Volterra-type screw dislocation employed between FGM and an elastic layer. To solve the dislocation problem, the complex Fourier transform is applied...

A FGM layer sandwiched between two isotropic layers weakened by several interface cracks under antiplane loading is studied. This paper examines the modelling of cracks by distribution of strain nuclei along crack lines. In this investigation, the Volterra-type screw dislocation employed between FGM and an elastic layer. To solve the dislocation problem, the complex Fourier transform is applied...

Several problems are emerging in the context of communication networks and most them must be solved reduced computing time since they affect to critical tasks. In this research, monitor placement problem is tackled. This tries cover communications an entire network by locating a specific nodes network, such way that every link remains surveyed. case solution cannot generated allowed time, penal...

F. Shakeri and M. Dehghan in [13] presented the variational iteration method for solving the model describing biological species living together. Here we suggest the differential transform (DT) method for finding the numerical solution of this problem. To this end, we give some preliminary results of the DT and by proving some theorems, we show that the DT method can be easily applied to mentio...

This paper considers the scheduling problem of minimizing the sum of flowtime on single machine with release dates. It is well known that the problem is NP-Hard, therefore in order to solve the problem, two approximation algorithms (KSA1 and KSA2) were proposed. KSA1 and KSA2 algorithms were compared with the MPSW (selected from the literature) and the Branch and Bound (BB) method. All the four...