ion: a model of the target system to be analyzed is definedby an abstraction process.Simulation: the behavior of the model is observed by executingsimulation runs that generate a collection of simulation data.Data gathering: data describing the actual behavior of the targetsystem are collected.Comparison: the simulated and real data are compared and the levelof appro...

Background: Evaluation and treatment of infertility is critical to can be affected all aspects of life, particularly women, the Including how their knowledge of fertility and assisted reproduction treatment can disrupt marital and sexual Infertile women. Hence this qualitative study was performed to explore experiences of infertile women about sexual life. Materials and Methods: This is a quali...

Water changes information in the hydrological system, in time and space, as an environmental issue takes heed of managers and decision makers in watershed management and river engineering, which can be addressed by using spatially distributed modeling. In this study simulation of water balance components in Taleghan mountainous watershed is performed using the spatially distributed hydrological...

neither damage mechanics model nor elastoplastic constitutive law can solely describe the behavior of concrete satisfactorily. in fact, they both fail to represent proper unloading slopes during cyclic loading. to overcome the disadvantages of pure plastic models and pure damage approaches, the combined effects need to be considered. in this regard, various classes of plastic-damage models have...

a robust linear quantitative structure-property relationship (qspr) model has been constructed to model and predict the refractivity indices of 101 organic compounds as common halo-derivatives of normal paraffin by application of the structural descriptors combined with multiple linear regression (mlr) method. in the main part of this study, theoretical molecular descriptors were adopted from t...

In order to program parallel and distributed systems efficiently, a systematic way of defining and understanding the complex behavior of process interactions in concurrent programs is needed. A proven method for understanding existing programs is event-driven monitoring which abstracts the program behavior to a sequence of events. These event traces are analyzed for debugging and tuning of the ...

Because of electricity subsidies, electricity price in Iran is much lower than its real value, and the growth of electricity demand is much more than its rational rate, which in turn implies ever increasing investment in the electricity section by the Government. Therefore, the recent Government policies are based on elimination of electricity subsidies, followed by commissioning complete elect...

A compartmental epidemic model of viruses in a computer network with vaccination and natural death is formulated. A strong impact of vaccination in the computer network reduces rapidly the spreading behavior of worms and Quarantine plays an important role in the recovery of the infectious nodes. The stability of the result is stated in terms of the Jacobian of the system and the basic reproduct...

suspension system is one of the most important factors in provision of ride comfort and dynamic stability in any vehicle. meanwhile the suspension systems of tracked vehicles, due to their continuous track, have particular specification in comparison with other vehicles. this specification causes tracked vehicles having an improved dynamic stability in off-road maneuvers compared to vehicles wi...