Scientific Journal of KubSAU

Polythematic online scientific journal
of Kuban State Agrarian University
ISSN 1990-4665
AGRIS logo UlrichsWeb logo DOAJ logo
Search by author's name Search by title
Sort by: Date Title Views
578 kb

MATHEMATICAL MODEL OF THE UNIVERSAL SOIL-PROCESSING INSTRUMENT

abstract 0881304038 issue 88 pp. 561 – 571 30.04.2013 ru 901
The model of the universal soil-processing instrument has been developed. The model is represented as an aggregate of discrete elements; the instrument is repre-sented as an aggregate of elementary planes. The model has allowed to study phases of instrument pro-cessing and to assess the quality of tree planting cup
196 kb

MATHEMATICAL MODEL OF VIBRATION CONTROL PROCESS OF UNDERCUTTING ROOTS OF SEEDLINGS OF FOREST CROPS

abstract 0741110024 issue 74 pp. 277 – 291 30.12.2011 ru 1061
The article presents a mathematical model of the interaction of vibration control the working body of the roots carver with soil and plant roots to optimize the design parameters roots carver
780 kb

MATHEMATICAL MODEL OF WORKING UNIT CO-OPERATION OF PLANT LIFTER WITH SOIL AND PLANTS ROOTS

abstract 0681104013 issue 68 pp. 143 – 159 28.04.2011 ru 1563
The mathematical model of working unit co-operation of plant lifter with soil and roots of plants for optimization of plant lifter’s different parameters is developed
301 kb

MATHEMATICAL MODELING FINANCIAL PERFORMANCE OF THE COMPANY WITH TAKING INO ACCOUNT ADVERTISING INVESTMENTS, AT THE EXAMPLE OF OIL-PRODUCT COMPANY

abstract 0641010007 issue 64 pp. 58 – 71 22.12.2010 ru 1640
The models of the estimation advertising effectiveness are reviewed and analyzed in the paper. The algorithm and example of the program’s work, which determines financial performance of the company with taking into account advertising investments is described and the mostly important results are discussed
1350 kb

MATHEMATICAL MODELING AND NUMERICAL STUDY OF THE HYDRODYNAMICS OF THE EXPERIMENTAL ELECTROCHEMICAL CELL WITH ROTATING DISK MEMBRANE

abstract 0941310024 issue 94 pp. 324 – 334 27.12.2013 ru 989
This article investigates hydrodynamic of experimental electrochemical cell with rotating disk in the cation exchange membrane. We have also investigated the flow in open, with the free surface of the solution and in hermetically closed cells. The main regularities of the hydrodynamics of the experimental cell at its real size were set
188 kb

MATHEMATICAL MODELING IN TECHNOLOGY AND QUALITY EVALUATION OF FOOD PRODUCTS

abstract 1251701010 issue 125 pp. 164 – 179 31.01.2017 ru 510
The analysis of scientific research in the field of food technologies has shown that mathematical modeling is applied in the following directions: adjustment of the modes of technological processes, development of compounding and quality evaluation of ready-made products, and also prediction of shelf life of new products during launching. Models of variance and regression analysis with application of methods of mathematical planning of experiment are most relevant in describing the processes of food production. The article contains the results of our own research about creating composition of fish preserves made of combined minced of fishes, bad-ripening and ripening in salting. The mathematical models of the dependence of organoleptic, structural-mechanical characteristics and characteristics of ripening of preserves on technological factors are presented. The dimensionless generalized index of quality was modeled and the composition of minced was optimized on the basis of its dynamics. It was established, that preserves which contain 42% herring Atlantic and 4,8% salt, have the best organoleptic, structural-mechanical and ripening characteristics. The regression model was developed, which determines the shelf life of wide range of fish preserves, depending on factors affecting it: storage temperature, acidity of the fill, proteolytic activity of the enzyme system of muscle tissue and also the speed of fish ripening, caused by addition of various functional and technological additives. Testing of the model shown, that calculated data of the shelf life of fish preserves correlate with the data obtained experimentally
176 kb

MATHEMATICAL MODELING IN THE SYSTEM OF STRATEGIC PLANNING OF ECONOMIC SUBJECTS IN THE TOURISM SPHERE

abstract 1291705035 issue 129 pp. 392 – 407 31.05.2017 ru 199
The sphere of internal tourism is one of the state priorities of the Russian Federation. The development of tourism in the Crimea will ensure the integration of the region into the Russian economy. The main instrument of using the competitive advantages of the tourist destination is Crimea - public-private partnership (PPP). The state has formed a legislative base for the use of PPP. The main role in the dynamic development of tourism business belongs to business entities. For the hospitality industry, the challenge is to build an effective management system in which strategic planning plays an important role. The analysis of the strategic planning processes at the level of economic entities in the hospitality industry revealed a number of problems, one of which is the failure to use progressive methods of strategic planning, including mathematical modeling. The purpose of the study is to determine the directions for improving the strategic planning of economic entities by developing a qualitative model of the organization's development that will allow to form an information base for making sound strategic plans. To determine the construction of a qualitative model of the development strategy of organizations in the sector under study, it is proposed to use a number of average industry indicators obtained by summarizing individual indicators: the efficiency of economic activity (Y); financial stability (X). The trend modeling (Y) indicates positive moderate dynamics, while the generalized indicator Y reaches 55.7826 in 2021. Similar results were obtained in modeling the generalized index of financial stability. Both analyzed indicators X and Y change the direction of their dynamics to the opposite - upward, starting from 2016, which indicates a favorable industry-wide situation. The results of the analysis will make it possible to increase the validity of managerial decisions when formulating strategic alternatives and choosing the optimal development strategy
140 kb

MATHEMATICAL MODELING OF ANTIBACTERIAL IMMUNE REACTION

abstract 0661102005 issue 66 pp. 52 – 63 28.02.2011 ru 1655
The work describes the mathematical model of an antibacterial immune reaction, which is presented as a system of integral-differential equations. The global characteristics of the adequacy of the model to the real process are studied
1581 kb

MATHEMATICAL MODELING OF DESALTING OF GEOMETRIC ELECTRO CONVECTION HETEROGENEOUS SURFACE MEMBRANE IN ELECTRODIALYSIS APPARATUS

abstract 0721108018 issue 72 pp. 206 – 216 30.10.2011 ru 844
The article presents a mathematical model of the effect on ion transport electro convection salt in non-smooth camera channel desalting electro dialysis apparatus in the presence of forced convection. The basic rules of process of electro convection are revealed
367 kb

MATHEMATICAL MODELING OF ELECTRO TECHNOLOGICAL OZONIZATION OF EGG STORES OF POULTRY FARMS

abstract 1211607098 issue 121 pp. 1619 – 1632 30.09.2016 ru 126
Sanitization of eggs is an essential way to fight bacteria, fungi and other microorganisms. Hatchability of eggs and the safety of day-old chicks are dependent on the quality of eggs processing. Leading scientists of our country have proved high efficacy of ozone application for processing of hatching eggs. To obtain a positive result by this method of sanitizing hatching eggs ozone, it is necessary to create a uniform concentration of ozone around the egg store volume. Decrease in ozone concentration from the set point may result in insufficient exposure to pathogens and because of this, may reduce hatchability. Significant excess of ozone concentration from the set point can kill the embryo. Because of mathematical modeling of electro eggs ozone treatment process, there was a mathematical model of the process of electroozonation of egg stores of poultry farms. This model takes into account decomposition of ozone on the surface of eggs and decomposition of ozone on the walls of an egg store. This mathematical model proves the desired control action at different initial data, such as: the required concentration of ozone in the egg store, the number of eggs, egg store geometric dimensions, the fan power, the design parameters of the discharge unit, the location of the ozone generator in the room
.