During the last decade, reverse logistics networks received a considerable attention due to economic importance and environmental regulations and customer awareness. Integration of leading and reverse logistics networks during logistical network design is one of the most important factors in supply chain. In this research, an Integer Linear Programming model is presented to design a multi-layer...

Mathematical optimization models are commonly implemented by specifying them in a high-level declarative modelling language. These languages allow specifying the overall model structure separately from the actual numerical values that are needed to form a specific instance of the model. The existing modelling languages are typically interpreted when the model is generated. In largescale linear ...

In this paper, we present an integrated model to find the optimum size of blast block that uses (i) a multi-criteria decision-making method to specify the applicable size of the mineable block; (ii) a linear programming method for the selection of the blasted areas to be excavated and in deciding the quantity of ores and wastes to be mined from each one of the selected blocks. These two methods...

unsteady flow through non - homogeneous and anisotropic porous media can be modeled by a partial differential equation.' this-equation cannot be solved analytically. hence, numerical methods. such as the finite element and the finite difference methods might be employed. in this study a mathematical model has been developed using the fully implicit finite difference method with control vol...

The article considers the important task of modern control theory to construct an adequate mathematical model a specific dynamic object or vessel movement, that is, its identifica-tion (structural parametric). It is proposed nonlinear longitudinal motion ship. Practical data were obtained experimentally, brief description experimental platform for unmanned boat and equipment used in study chara...

Context. The problem of approximation empirical data in the decision-making system safety management.. object study was to verify adequate coefficients mathematical model for using information technology.
 Objective. goal work is creation math-ematical technology on bases analyze different approaches approximating an that can be used predict current state operator flight system..
 Met...