To solve the problems of modeling telecommunications networks currently used by a large number of different methods. All of them can be divided into two classes1-5. First class combines methods of physical modeling in which, instead of the real system uses its simplified physical counterparts. In view of the significant limitations of these methods, they are rarely The second class includes met...

A hybrid physical-based deformation modeling (HPDM) technique for our laparoscopic surgery simulation system is proposed. The proposed technique consists of three components: (i) approximate continuum free-form deformation modeling, (ii) efficient collision detection for non-rigid objects, and (iii) mass-spring modeling for force feedback implementation. Three physical-based deformation modelin...

The feasibility of extractive reaction of methacrylic acid from aqueous solution using a quaternary amine, tri–octyl methyl ammonium chloride (TOMAC) as an extractant, was studied. The diluents chosen in the present work belong to different chemical classes, n–butyl acetate, carbon tetrachloride, isoamyl alcohol, methyl isobutyl ketone, and toluene. The effect of initial acid concentration in t...

Block-flexure is the most common mode of toppling failure in natural and excavated rock slopes. In such failure, some rock blocks break due to tensile stresses and some overturn under their own weights and then all of them topple together. In this paper, first, a brief review of previous studies on toppling failures is presented. Then, the physical and mechanical properties of experimental mode...

We present a design approach for structuring multimodels in an object-oriented framework for physical modeling. This approach is termed object-oriented physical modeling (OOPM). Multimodels have played a key role in permitting a model designer to construct large-scale dynamical models. We have built upon earlier work in multimodeling by specifying how multimodels are deened for object-oriented ...

SUMMARY This paper reviews recently published results on multiple input multiple output (MIMO) channel modeling. Both nar-rowband and wideband models are considered. We distinguish between two main approaches to MIMO channel modeling, namely, physically based and non-physically based modeling. The non-physical models primarily rely on the statistical characteristics of the MIMO channels obtaine...