abstract one of the major factors on the amount of water resources is river flow which is so dependent to the hydrologic and meteorologic phenomena. simulation and forecasting of river flow makes the decision maker capable to effectively manage the water resources projects. so, simulation and forecasting models such as artificial neural networks (anns) are commonly used for simulation and predi...

this article proposes composition of fuzzy sets theory with discrete-event simulation and puts it into application in order to model uncertain activity duration in simulating a real-world system. the purpose of this paper is to assess the usefulness of fuzzy simulation for modeling uncertain activity duration, especially when insufficient or no sample data is available. in this research, fuzzy ...

Stripper columns are used for sweetening crude oil, and they must hold product hydrogen sulfide content as near the set points as possible in the faces of upsets. Since product    quality cannot be measured easily and economically online, the control of product quality is often achieved by maintaining a suitable tray temperature near its set point. Tray temperature control method, however, is n...

Modular hierarchical modeling formalisms distinghuish clearly between simulation algorithms and model definitions and offer well-defined means to construct models flexibly. At the same time they are particularily aimed at a centralized development of models. In contrast, simulation-based integration approaches clearly separate interface descriptions from model implementations, but offer less su...

Nowadays, there is a trend for delivering the Simulation as a Service using web-based/cloud-based services. Existing simulation services cannot be easily discovered and composed. Although semantic mashups have become popular for implementing service composition in the Web 2.0, there are yet no semantic mashups applications focusing on modeling and simulation. Here, we propose the first existing...

Results of computer simulations are presented for the thermodynamic properties of mixing and the local compositions for mixtures of Stockmayer and Lennard-Jones fluids with varying concentrations and dipole strengths The results show a strong asymmetry with respect to the concentration which is attributed to the influence of the orientation dependence of the dipoledipole interaction and explain...

The relationship between arthropod abundance and plant composition is extremely complex. It is very hard to develop a mechanistic model to describe the relationship. This study aimed to simulate arthropod abundance from plant composition on grassland using an artificial neural network developed by the author, and to compare simulation performances between the neural network and conventional mod...

We present a simulation and design framework for simultaneously designing and modeling electromechanical systems. By instantiating component objects and connecting them to each other via ports, a designer can configure complex systems. This configuration information is then used to automatically generate a corresponding system-level simulation model. The building block of our framework is the c...

Article history: Received 1 December 2008 Received in revised form 7 September 2009 Accepted 11 January 2010 Available online 22 January 2010