every firm learns through firm specific methods. this learning process is operationalized by firm’s knowledge management practices. therefore, knowledge to result in successful learning should be assisted by a combinative framework which can enhance a firms’ absorptive capability. this in turn will play a decisive role for achieving competitive advantage. current literature in strategic managem...

Simulation is widely used in the decision making processes associated with supply chain management. In this paper, we present an extension of the simulation based optimization framework which has been previously proposed for analyzing supply chains. The extension consists of the iterative construction of a surrogate model based on systematically accumulated simulation results to capture the cau...

Typical challenges of simulation-based design optimization include unavailable gradients and unreliable approximations thereof, expensive function evaluations, numerical noise, multiple local optima and the failure of the analysis to return a value to the optimizer. One possible remedy to alleviate these issues is to use surrogate models in lieu of the computational models or simulations and de...

Deriving optimal traffic management schemes for urban road networks typically relies on the use of complex simulation tools, that capture in detail the behavior of drivers as well as their interaction with the network infrastructure. The integration of these traffic simulators within an optimization framework is an intricate task. Indeed, these simulators can be seen as stochastic nonlinear fun...

background: since tumors located in thorax region of body mainly move due to respiration, in the modern radiotherapy, there have been many attempts such as; external markers, strain gage and spirometer represent for monitoring patients’ breathing signal. with the advent of fluoroscopy technique, indirect methods were proposed as an alternative approach to extract patients’ breathing signals. ma...

the telecommunications industry plays an important role in providing ict services to a wide range of customers. in addition to individual customers, corporate customers also are user of these services and have an important role to make return on investment for telecom companies (telcos). therefore, this group of customers should not be ignored by any reason. this is where the telecom companies ...

environmental protection is a key element in urban management. due to complex relationships between human and environment in metropolises the importance of environment is ever-increasing. in this paper the current situation of environment in tehran metropolis including air, water, biodiversity and human habitat along with the most crucial threats, their effect as well as the associated agencies...

Aprobabilistic framework is presented for evaluation of hurricane wave and surge risk with particular emphasis on real-time automated estimation for hurricanes approaching landfall. This framework has two fundamental components. The first is the development of a surrogatemodel for the rapid evaluation of hurricane waves, water levels, and run-up based on a small number of parameters describing ...

We introduce MISO, the Mixed-Integer Surrogate Optimization framework. MISO aims at solving computationally expensive black-box optimization problems with mixed-integer variables. Although encountered in many applications, such as optimal reliability design or structural optimization, for example, where time consuming simulation codes have to be run in order to obtain an objective function valu...