This article presents a synchronous motor model in generalized vector space. This model can be used to study synchronous motor transients as well as evaluate their influence on sugar mill processing in plant technological process
The article is devoted to the mathematical modeling
of compatibility of economical interests of processing enterprises and feedstock manufacturers. Parametric mathematical model in a form of weighed gain was created.
One-temperature limited version of the general model of adsorption-contact drying for the ceramic brick is considered. Numerical modeling of heat and mass transfer in the donor and the acceptor samples for one-dimensional approach is carried out. It is shown, in particular, that the moisture diffusion coefficient of material in the contact zone can vary significantly due to changes in the conditions for liquid-phase transfer
The mathematical model of heat and mass transfer during adsorption-contact drying of ceramic bricks within the framework of the mechanics of multiphase systems is constructed
In the article, we have considered the questions of mathematical modeling of a combined soil-cultivating unit. Theoretical dependences and rational values of parameters and unit operating modes are received
Rheological model for wood mechanical behaviour, viewed as a medium with dual porosity, is considered. Mathematical modelling of compression process of a wooden sample in a special mould is done at stable temperature conditions with the help of numerical methods. It is shown, in particular, that the durability level of essentially depends on the rheological characteristics of the structural skeleton and the wooden substance, as well as on reallocating of fields of moisture and porosity
The processes of momentum transfer in laminar and turbulent boundary layers are considered. We have obtained the proprietary models for calculation of shear stresses, turbulent viscosity, friction factors, boundary layer thickness and momentum transfer coefficients in boundary layers under different conditions of motion of media. The examples of the calculation of the above characteristics and their agreement with known experimental data are shown. The obtained equations and the methods of calculation of the boundary layer characteristics can be used for calculations of industrial heat and mass transfer apparatuses of various designs as well as of some other types of equipment
The article is devoted to development of effective and adequate mathematical models of an estimation of a financial and economic condition of region and meeting program toolkit with use of multivariate statistical models and fuzzy logic systems
The federal program on essential drugs provision
(EDP) is one of the most significant and socially
important state projects; it is directed to the reduction
of morbidity and mortality together with the
improvement of life quality of the society and its
social climate. In accordance with the federal law “On
social state assistance” from 17.07.1999 №178- FL,
the essence of the program is that medical recipes are
dispensed for preferential medicines to be received by
federal program participants. The medical-economic
control (MEC) of the drugs designation and provision
of federal benefit recipients is performed basing on the
automated registries examination of released drugs.
The number of passed and failed examination recipes
is determined according to the registers processing
results. A certain percentage of the accepted for
payment prescriptions is a subject for MEC. For the
purpose of the recipes selection for testing, the paper
proposes the mathematical models of criteria
application and MEC-planning. The game model of
organization and MEC performance in health care
organizations is build basing on the theory of games.
The considered play model suggests that the health
services quality examination need to be adjusted and
some strategies are to be improved. The solution on
the planning of checked recipes number allows to
perform the inspection of all the health care
organizations, involved in EDP program
The article describes the models of selection and distribution of vehicles in the life cycle transport company based on the principle of hierarchical modeling for various manufacturing operations