№ 126(2), February, 2017
Public date: 28.02.2017
Archive of journal: Articles count 63, 153 kb
-
MEDICAL ASPECTS OF TOXICAL DANGERS IN COMMERCIAL SHIPS (REVIEW)
DescriptionThe article presents an analysis of features of the organization of special medical and prophylactic support on commercial ships. First-aid treatment at poisoning of crews of the most widespread toxic matter (poisonous gases, oil products, methane, coolants, and fumigants) has been considered. It is noted that medical aspects of toxic dangers on the water transport have to include prevention of the pathological states of health of seamen, timely medical support of the ship, early diagnostics of pathological states, sorting of injured persons and the organization of first emergency medical aid
-
01.00.00 Physical-mathematical sciences
DescriptionIn 1893, the French mathematician J. Adamar raised the question: given a matrix of fixed order with coefficients not exceeding modulo this value, then what is the maximum modulo value can take the determinant of this matrix? Adamar fully decided this question in the case when the coefficients of the matrix are complex numbers and put forward the corresponding hypothesis in the case when the matrix coefficients are real numbers modulo equal to one. Such matrices satisfying the Hadamard conjecture were called Hadamard matrices, their order is four and it is unknown whether this condition is sufficient for their existence. The article examines a natural generalization of the Hadamard matrices over the field of real numbers, they are there for any order. This paper proposes an algorithm for the construction of generalized Hadamard matrices, and it is illustrated by numerical examples. Also introduces the concept of constants for the natural numbers are computed values of this constant for some natural numbers and shown some applications of Hadamard constants for estimates on the top and bottom of the module of the determinant of this order with arbitrary real coefficients, and these estimates are in some cases better than the known estimates of Hadamard. The results of the article are associated with the results of the con on the value of determinants of matrices with real coefficients, not exceeding modulo units
-
Description
Theoretically and experimentally, we investigated the process of adjusting the pH of natural water of hydrocarbonate class electrodialyzer with bipolar membranes with channel length of 40 cm. We experimentally measured concentration of components, pH of the solutions in alkaline and acid channels of electrodeposition depending on the current density. The article describes a mathematical model for long channels; to scale the mass transfer characteristics of the process there was applied and verified a method of compartmentalization, which gave the possibility to calculate the dependence of the component along the channel length at different velocities of flow of the solution. Numerical calculations were compared with experimental data on electrodialyser of 10 cm and 40 cm length
-
01.00.00 Physical-mathematical sciences
DescriptionIn the article we investigate the multicriteria task arising at the organization of distributed calculations in a corporate network. As a mathematical tool to solve the problem we use prefractal graphs, which naturally reflect the structure of relationships in global and corporate networks. The corporate network with the distributed computing system at the solution of a particular task has to be reliable, quickly and qualitatively to make decisions. And every computer in the network should be a part in the solution of the problem, since it is fixed for a certain function. The problem is reduced to cover the prefractal graphs with disjoint simple paths along the edges and vertices. On the set of all admissible coverings we constructed a vector-target function with specific criteria. All these criteria have a specific meaningful interpretation, allowing organizing the calculation of maximum reliability, with minimum time information processing and loading balancing between the network elements. In the article we constructed polynomial algorithms for finding optimal solutions according to specific criteria. For the criteria which are not optimizing the allocated coverings, estimates of the lower and upper bounds are given. For all the algorithms we constructed and substantiated estimation of computational complexity, confirming the advantage of using algorithms on prefractal graphs to classical algorithms on graphs
-
CONTROLLING OF CONSUMER PRICES DYNAMICS AND LIVING WAGE
DescriptionIn accordance with the Presidential Decree of 21 August 2012 № 1199 one of the 11 integrated indicators of the activity of executive authorities is the measure "real disposable income of the population". For its calculation it is necessary to measure the level of consumer prices. The article presents the minimum consumer basket of physiologically essential food products, designed in 1993 by the Institute of High Statistical Technologies and Econometrics (IHSTE) based on the initial data of the Institute of Nutrition of the Russian Academy of Medical Sciences, and the results of measuring the cost of the consumer basket IHSTE and inflation index in 24 years (1993 - 2017). We discuss the application of the developed tools in Controlling of the level of consumer prices and living wage. According to M. Orshansky, living wage can be estimated by multiplying the cost of the minimum food basket by a factor which is equal to the quotient of all costs to the costs of food costs for a poor family. This work is aimed at the elimination of the monopoly of Rosstat in the calculation of indices of inflation, the living wage and the real disposable income of the population. The methods of the measurement and the use of inflation constitute an important part of training courses in econometrics, which are taught in the context of the scientific-educational complex "Engineering Business and Management" of the Baumann Moscow State Technical University. Nobel Laureate in Economics Vasiliy Leontiev thought that only 1% of economists analyze the newly collected data, 30% use the data contained in the publications of predecessors, and the rest did not turn in their arguments to the real world. This work belongs to the 1% of publications (which analyzes the newly collected data), about which Vasiliy Leontiev wrote
-
HOW PHILOSOPHY BECAME «A LITERATURE GENRE»
DescriptionIn the article we have observed the main theoretical and methodological issues of European philosophy streams in the second half of XX century, which refused the image of philosophy as exact science, based on logic conceptual tool. We have shown the connection of poststructuralist formations and structuralist scheme in creating «discourse typology», a new discipline which implies philosophy to be considered as one of literature genres. Structuralists’ search starts from the description of invariable, static structures that help to create separate pieces of fiction. The latter are observed as isolated situations in which these atomic structures are used. Such attitude, as revealed in the article, results in two deductions. The first considers literature having no specific features compared to other types of discourse, i.e. it does not exist as such. (Ts.Todorov) The second deduction implies that being aware of the logical creation of any meaning reader’s hermeneutics is seen as unnecessary. These deductions resulted in a new scientific discipline «discourse typology», developed by structuralists. This stream was continued by poststructuralists, i.e. strategy to «poetize philosophy» is justified by the expansion of the object for science cognition in the direction of not verifiable and not rationalized, requiring separate methods of study as well as description language. Consequently, philosophical discourse becomes that very descriptive language that helps to overcome «logocentrism» of traditional thinking. Further in the article we consider the main «logomachy» strategies developed by J.Derrida, i.e. «deconstruction», «structure decentration», «critics of transcendental significatum», «critics of structural properties of the construction»
-
TO THE QUESTION OF ORGANIZATIONAL STRUCTURE OF GRAIN BUSINESS MANAGEMENT
DescriptionIt is noted that the grain market has a key influence on food supply in our country. Today, in the conditions of import substitution, many animal products continue to be received from abroad in large volumes, among which grain is a feeding base, although those products can be produced domestically with high profits. In recent years, our country has become a large grain exporter and had been set among the four world's largest grain sellers at the world market. Now, the main problem of the grain business has become not manufacturing but the effective management and marketing of grain sale on domestic and foreign markets. Under the "grain market", the authors understand an integrated mechanism covering the entire process of production - processing - logistics - marketing of grain products, ensuring access to the consumer. The authors note that today there should not be rigid boundaries in the management segments of the grain market, as all sectors of the market are technologically linked through a set of integrated activities. Also they are bringing up their model of functioning management of the grain market, which clearly demonstrates the basic blocks of the investigated production systems, their connections and relationships. The practical implementation of such cooperation promises to participants of the grain market to get a certain synergistic effect due to the systemic functioning of technological, logistics, marketing and other business relationships between all parties; as well as adjustments to price ratios and more sophisticated economic instruments for investment in that business
-
STUDY OF SORPTION PROPERTIES OF FILTER MATERIALS
DescriptionPresent article is devoted to research of sorption properties of various filtering materials. The various types of filters, such as fabric, frame, granular filters are considered. The principles of work of each type of filters, feature and difference them from each other are considered. The conditions of their application are investigated. Process of filtering through a layer of granular loading also is described. The physicochemical parameters of some granular materials including sand, hydroanthracite-Р, granite road metal, volcanic tuffs, and expanded vermiculite are given. The comparison of oil capacity of some materials is considered at their use as a filtering material and oil collectors. We have described sorption features of activated carbon, used as a filtering material for clearing waters of petroleum and petroleum. The article has a conclusion about their prospects and the efficiency of application when fighting with petroleum pollutions
-
INVESTIGATION OF THE PROCESS OF EVAPORATION OF CHOKEBERRY INFUSIONS
DescriptionFor the design of rotary-film evaporators of the technology for food production we need summary tables of performance parameters of the process. To obtain them it requires a significant amount of experiments that require a large investment of time and resources. Therefore the actual task is reducing the cost of designing of the technological process, due to the choice of optimal parameters of the rotor-film evaporator. This problem can be solved by conducting a small series of experiments aimed at identifying general mathematical dependences of the parameters of the processes of evaporation on the performance of the device. Based on the obtained dependencies it is possible to find design and selection of evaporators. The study proceeded from the assumption that the maximum thickening of the initial solution in the evaporator, it is possible while achieving the maximum possible temperature, the filing of the original solution in the apparatus and performance during repeated evaporation and infusions from the fruits of chokeberry. The calculation is performed taking into account the prevention of adhesion of evaporated solution on the walls of the apparatus and the rotor blades, which may reduce the quality of the end product. The data confirm the effectiveness of the method of repeated evaporation on the example of concentrating the water-alcohol extracts of black chokeberry
-
Description
Long-term storage of fruits can be achieved by means of their special preparation by pre-treatment before storage by electromagnetic fields of extremely low frequency (ELF EMF). In the current study patterns of influence of ELF EMF pre-treatment of fruits on the effectiveness of reducing microbial contamination during storage for the development of effective technological modes of preparation of fruits before storage are revealed. Qualitative and quantitative characteristics of microbial contamination of the fruits’ surface were studied. Effective modes of fruits (apples and pears) treatment by ELF EMF were established - for apples: frequency - 22 Hz, current - 10 A for 40 minutes, and for pears: frequency - 26 Hz, current - 5 A for 50 minutes, allowing to reduce to the maximum extent the microbial contamination of their surface, and also to reduce the loss of their weight from microbial spoilage during storage. The terms of storage of processed by ELF EMF fruits under refrigeration were established - for apple varieties Idared and Golden Delicious - within 8 months, for pear variety Conference - for 7 months