#3 / 2018

The article presents the results of studies that prove that interhemispheric relationships of different parts of the cortex are formed during gestation, indicating the existence of a gestational dominant. The topography and severity of electrical processes in the neocortex is due to the presence of peripheral asymmetries in the female reproductive system. For women who are pregnant with female fetuses in uncomplicated pregnancies, an increase in activation has been observed in the anterior hemisphere, which is contralateral to the localization of the placenta. The threatening preterm labor was most typical for pregnant women with left-oriented placenta, for women with male fetuses and was accompanied by a change in interhemispheric activation asymmetry relative to the lateral location of the placenta. Thus, the conclusion is confirmed that a significant factor in the favorable course of gestation is the consistency of central and peripheral asymmetries in the female reproductive system.

46-55.pdf

(375 Kb)

The purpose of this work was to assess the impact of different types of loads on the speed-power qualities of bobsleighers of different qualifications. The study was attended by athletes of the national team of the Russian Federation in bobsleigh sport. Both professional athletes having a wide experience of the international performances, and the young bobsleighers only beginning the way in sports of the highest achievements were examined. The technical means of achieving their goals were made by strain-gauge platform on the basis of laboratory analysis of motor activities of Kuban state University of physical culture, sport and tourism, through which carried out registration of the reference effort. For experiment the following types of loadings were chosen: exercises with a bar with the weight close to the maximum for each athlete, high-speed running and various hopping exercises. Abalakov test on tensometric platform was used to assess changes in the level of speed-strength qualities. The flight time in a jump, the duration of individual phases of motion and the peak value of the repulsion force are taken as comparison criteria. Sensogram analysis revealed differences in the duration of the phases of the exercise and the speed of reaching the maximum force when repulsing before and after running the specified loads. Also, according to sensograms fluctuations in the duration of individual phases during the exercise were revealed. After comparison of the received graphic images and the analysis of time and power characteristics of repulsion of the performed exercises it became possible to establish some distinctions in performance of control tests at highly skilled and low-skilled bobsleighers. Also, it was succeeded to find out some regularities of influence of loadings on a condition of speed-power qualities of professional and beginning bobsleighers.

56-61.pdf

(518 Kb)

This research studies the influence of electro-acoustic signals of the “voice” of the pulse “Sphygmoton”, adapted to impulse hypoxia of a person, on such indicators of the electrocardiogram as R-R, TQ, QT and heart rate. The results of the study indicate stabilization of these indicators, which excludes the risk of cardiovascular disease in students of this group.

62-66.pdf

(311 Kb)

The role of environmental factors on realization of genetically determined influence of the peroxisome proliferator-activated receptor γ2 (PPARγ2) Pro12Ala polymorphism on the condition of gas transport system of the blood of healthy young men has been established. The surveyed men were examined according to their genotype (2 variants of PPARɣ2 gene) as well as degrees of involvement in motor activity (MA) in everyday life (restricted MA among recruits of the Armed Forces of the Russian Federation abiding in quarters in quarantine conditions; moderate MA among full-time students; high MA among military (ML) of ground forces experiencing various types of muscular load). Household conditions as well as psycho emotional conditions of the young men were taken into account when forming the groups of the surveyed. Two-factor analysis established a significant combined influence of genotype and level of MA on different items of performance of oxygen-transport system: red blood (medium concentration of hemo-globin in erythrocytes (MCHC)), blood saturation (satO2), external breathing (vital lungs capacity (VLC)), forced vital lungs capacity (FVLC), blood circulation (systolic blood pressure (SBP)), adaptive potential (AP) and economization of bloodstream coefficient (EBC), demonstrating contribution of intensive motor activity to phenotypic manifestation of PPARγ2 gene. Genotypic differences are mainly marked in high everyday motor activity (ML). It should be noted that the degree of motor activity has a greater influence on blood transport system indicators in presence of Ala allele in young men`s genotype. The nature of this influence marks the protective effect of the allele. On the bases of conducted research, it could be concluded that the trigger for the mechanism of genetic determinant is motor activity factor.

67-75.pdf

(355 Kb)

The article presents the results of studies of the daily periodicity of the time, when labor ends, depending on the sex of the fetus, for which 1567 birth histories were analyzed. It was revealed that the largest number of boys was born in the time period from 6 to 12 pm when daily illumination decreases, while the girls were born from 12 pm to 6 am when daily illumination gradually increases. During the day light, there were no significant differences in the time of com-pletion of childbirth depending on the sex of the fetus, which, apparently, is related to the medical and social features of the process of delivery of women at this time of day. Repeated pregnancies were accompanied by inversion of daily biorhythms, when labor finishes, compared with biorhythms of primiparous women from 12 pm to 6 am to 6 pm to 12 pm. The obtained results conclude that there is an interrelation between the mechanisms providing initiation and de-termining the duration of labor with sexual dimorphism of the fetus, in which the regulatory involvement of the epiphysis and melatonin metabolism is traced. Premature birth at 27–28 weeks in nulliparous and repeated pregnancies were determined mostly in pregnancies with male fetuses, while in women with third pregnancy – in case of female fetus. Mothers of girls have higher 6-sulphate-oxymelatonin level in the urine compared to the women with male fetuses.

76-83.pdf

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The developed method of non-invasive exposure in the “Sphygmoton” regime showed the effectivess of this method on the body of people who had a deviation in the HVS. The tested model of the pulse «voice» significantly reduced the fluctuations of the ECG parameters, namely: АМо, Мо, dX.

84-87.pdf

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This paper deals with the results of a research on studying and complex assessment of an ecological condition of agrolandscapes of a flat zone of the Adyghea Republic. We have revealed extent of manifestation of degradation processes of soils with use of GIS-technologies as tool for justification and development of measures to increase stability and efficiency of agrolandscapes. Agroecological assessment of land grounds and crops is made according to their basic needs in growth conditions. The optimum structure of sown areas is created and various types of crop rotations for farms of a flat zone of the republic are made.

88-93.pdf

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This paper is devoted to modern problems of living standards of the population of the Republic of Adyghea, employment and labor market in Adyghea in conditions of sanctions. The publication focuses on the research and updating the bank of data on the number of unemployed in the republic, their structure, the possibilities of the employment service in resolving the issues of hidden unemployment and the provision of employment services to young people.

94-100.pdf

(430 Kb)

The paper presents the results of scientific research on improvement of technology of cultivation of new tomato hybrids in the open ground. Influence of various doses of mineral fertilizers and overcrowding of crops on growth, development and fructification of a tomato is studied. Increase in quantity of plants per unit of area and use of mineral fertilizers in the recommended quantity promote acceleration of maturing of tomatoes on the average by 3–5 days. The optimum background of mineral nutrition at quantity of plants of 45 thousand/hectare contributes to the most optimum development of tomato plants, as well as to increase in tomato introduction of commodity quality.

101-106.pdf

(315 Kb)

The article considers the main morphological features, as well as the results of the study of the biological properties of the tea plant. The data of the seasonal dynamics of the physiological parameters of tea, obtained in the conditions of the Adyghe Branch (foothills of the North-Western Caucasus), are given for the first time. The results of the study of water metabolism are analyzed, in particular: total water content, water deficiency, water retention capacity, transpiration intensity, as well as data on the intensity of photosynthesis of tea plant leaves in seasonal dynamics.

107-112.pdf

(355 Kb)

The paper presents the results of many-year researches on studying reactions of plants of sunflower to processing of seed material and the whole plant during vegetation by various growth regulators. The most optimal variants of use of the studied agrichemicals are established, and assessment of economic efficiency of the studied techniques is carried out.

113-117.pdf

(303 Kb)

Our researches show that seal of straw of grain crops within two years promoted increase in productivity of maize green forage with both ways of soil processing. The most preferable variant is with use of mineral fertilizers and green matter on plowing where the productivity maximum is obtained. As for indicators of soil fertility: there is no decrease in humus content; indications of acidity of the soil in dynamics are stable; increase in content of an ammoniac form of mineral nitrogen in the spring is revealed.

118-121.pdf

(291 Kb)

Mathematics

We consider vector fields on the plane that are invariant with respect to rotations at angles that are multiples of the angle 2п/q (q=2,3,…). Structurally stable vector fields, whose topological structure does not change under small perturbations in the indicated class of vector field, are described. They form the dense set opened everywhere in this space.

13-19.pdf

(368 Kb)

We have established that the full hyper frequencies considered as functionals on a set of solutions of linear homogeneous multidimensional differential systems with the continuous coefficients limited on a semiaxis are not residual (that is can change at change of the solution on a final section). Besides, at any beforehand given natural we give the example of -measured differential system, for some solution of which full and vector hyper fre-quencies do not coincide.

20-24.pdf

(319 Kb)

For the first time a recurrent formula was obtained to determine a characteristic polynomial and an algorithm for calculating a range of the prefractal graph with a full four-vertex priming, the old edges of which aren't crossed in a trajectory.

25-32.pdf

(345 Kb)

In the article, the rule of a conclusion in indistinct grammar based on the indistinct binary relation is defined. We show how to calculate deductibility degree for pessimistic and optimistic indistinct grammars. The main directions of use of indistinct sets for the analysis of quality and control of educational process are considered. Application of a conclusion in indistinct grammar is shown using a concrete example of the rating system consisting of five ranges of estimates (from 0 to 100). The terminal set and production of rules of a conclusion is given. Realization of the developed technology will allow automation of the analysis of quality of the manual and other similar educational and methodical materials. The conclusion of five chains is drawn: “excellent assessment”, “good mark”, “satisfactory assessment”, “unsatisfactory assessment”. Difficulties of conclusions and degree of accessory are calculated. We show how to classify concrete value of assessment. Realization of the developed technique will allow automation of the analysis of quality of educational process.

33-37.pdf

(327 Kb)

A function, the lower variability indicators of which do not coincide with the top ones, is found on a set of solutions of the linear homogeneous two-dimensional differential systems (which are not coming down by means of initial replacement of variables to the equations of the second order) with the continuous coefficients limited on a positive semiaxis.

38-41.pdf

(313 Kb)

Physics

The phase transformation and microstructure behavior of Ni50Ti47Nd3 shape memory alloy was investigated by scanning electron microscope, X-ray diffraction and differential scanning calorimetry. The results showed that the microstructure of Ni-Ti-Nd ternary alloy consists of the NiNd phase and the NiTi matrix phase. One-step phase transformation was observed alloy.

42-45.pdf

(367 Kb)

Technical Sciences

The article proposes an approach to the theoretical description of the mechanism of changing factors that limit population growth. It consists in the fact that a modified equation of the sigmoid function is included in the system of equations describing the development of the population with all its kinetic dependencies. This gives you the oppor-tunity to describe in one equation the area where in a stationary state the growth of the population is limited by one factor, and the area limitation is another important factor, thus implementing a mechanism of a smooth change of the limiting factors for the non-stationary boundaries of their scope. In the proposed model there is no need to implement discontinuous functions for switching factors, which makes it possible to present a single equation of the system, while simplifying the analysis of stability and simulation of the controlled system. The work is theoretical and is based on the regularities and qualitative properties of controlled dynamic biosystems in steady and transient conditions.

122-128.pdf

(338 Kb)

The paper discusses a method for increasing the reliability of input information in an information system when reading barcodes. Additional bar codes corresponding to the excess symbols of the modular code are generated. The proposed solutions make it possible to restore the correct (initial) data with a given probability for various destruc-tive effects on them. The estimation of reliability of the information at reading bar codes is presented. Unlike the known control methods used in bar codes based on various methods of antinoise coding, the method developed as-sumes an increase in the reliability of information when reading barcodes.

129-134.pdf

(472 Kb)

The paper discusses issues related to accounting for Squid proxy traffic. Recommendations for IT administrators with a low level of training in installation of the Squid Analysis Report Generator software are given.

135-141.pdf

(306 Kb)

The article discusses the use of a prototype of a new security system based on the Arduino controller. It uses ultrasonic sensors to detect intrusion. In case of detection, the system notifies people, including light and sound alarms. In addition, with the help of ultrasonic sensors, when an intruder invades an object, the distance between the sensor and the object can be obtained.

142-148.pdf

(420 Kb)

The paper investigates the possibility of using a neural network (NN) controller for the system of frequency-controlled electric drive motor of the blower fan supplying air to the furnace. In the synthesis of the NN-controller, the method of predictive control is used. For its implementation, a multilayered neural network of direct distribution with the training method of back propagation of error is used. The simulated control object is represented by a set of three serially connected links: a frequency converter, an asynchronous electric motor and the blower fan. The analysis of the dynamics of the system was carried out on the transient processes obtained by simulation of the induction motor in the package MATLAB Neural Network Toolbox. The results show that the system has high precision and good characteristics of tracking and stabilization.

149-154.pdf

(429 Kb)

The article shows the possibilities of modeling information flows using graph theory to study and develop the complex structure of an automated control system based on the example of the Federal Budgetary Institution “The State Regional Center for Standardization, Metrology and Tests in the Adyghea Republic”.

155-161.pdf

(413 Kb)

The paper examines the device to affect the human body with rotating magnetic field: the existing constructions and the proposed design of magnetic turbotron of axial type.

162-166.pdf

(341 Kb)