in this research, a two-phase algorithm based on the artificial neural network (ann) and a harmony search (hs) algorithm has been developed with the aim of assessing the reliability of structures with implicit limit state functions. the proposed method involves the generation of datasets to be used specifically for training by finite element analysis, to establish an ann model using a proven an...

the computation of structural failure probability is vital importance in the reliability analysis and may be carried out on the basis of the first-order reliability method using various mathematical iterative approaches such as hasofer-lind and rackwitz-fiessler (hl-rf). this method may not converge in complicated problems and nonlinear limit state functions, which usually shows itself in the f...

one of the main challenges facing the agriculture bank of iran regarding lending loans is the high probability of default by farmers. several factors could be involved in this issue and should be considered in order to control and reduce the risk in the failure of repayment. this study aimed to examine the factors affecting the repayment performance of agricultural loans in the city of maragheh...

In this paper we focus on a continuously deteriorating two units series equipment which its failure can not be measured by cost criterion. For these types of systems avoiding failure during the actual operation of the system is extremely important. In this paper we determine inspection periods and maintenance policy in such a way that failure probability is limited to a pre-specified value and ...

The failure probability of the structures is one of the challenging problems in structural engineering. To obtain the reliability index introduced by Hasofer and Lind, one needs to solve a nonlinear equality constrained optimization problem. In this study, four of the most recent metaheuristic algorithms are utilized for finding the design point and the failure probability of problems with cont...

supply of credits to farmers seems necessary because of the importance of credits in order to assurance the efficiency of production process. the purpose of this study is identification factors affecting on credits allocation to agricultural activities and factors affecting on probability failure to repay of credits received .for this study, 196 farmers and customers who have received loans fro...