South Federal University
Author list of organization
List of articles written by the authors of the organization
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COGNITIVE MODELING OF THE IMPACT OF SELF-ORGANIZATION FACTORS ON THE ENTERPRISE SUSTAINABILITY
DescriptionThis article discusses the problem of methodological support for the management of the recovery cycle of Russian industry, which is caused by the transformation of factors affecting the achievement of the required parameters of competitiveness. Given the low level of technological development, it is proposed to rely on the concept of sustainability in determining the strategy of re-industrialization in Russia. As a theoretical platform of such a concept, the ideas of intellectualization of enterprise management are proposed, which were developed in the foreign theory of industrial management. Thus, the main factors influencing the stability of the enterprise were correlated with elements of the "ADACOR holonic" -architecture of management, inspired by biological and evolutionary theories. An empirical analysis of the impact of self-organizing factors using the technology of cognitive modeling, which revealed a significant impact on the company's sustainability of environmental assessment factors. The state is revealed under which the effect of local stability within the limits of the parameters "Diagnostics of threats" and "Unpredictability of the environment" is achieved, which makes it possible to form a complex of management actions to regulate these parameters using the coenoses tools. The proposed interdisciplinary approach, based on a system of regularities of the physical and mathematical order, will greatly enhance the effectiveness of forecasting and the predictability of enterprise development
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OBJECTIVES AND METHODOLOGY OF CROSS-CUTTING DESIGN OF TECHNICAL SYSTEMS
DescriptionThe debate continues about reform of higher education In the country. We offer our point of view regarding the preparation of bachelors and masters on the direction of "Control of the technical systems". Department of automatic control systems leverages variable disciplines of specialization and optional subjects, forms a curriculum based on the needs of the business environment of the region or commissioned by a separate large enterprise. Students participate in the modules of project activities, form new and effective engineering solutions, to get skills of their practical implementation with regard to effectiveness, relevance and prospects of their further development. The production practice is very important in the preparation of bachelors and masters. To this end, the agreement on cooperation in the field of improvement of quality of preparation of students of SFedU concluded with the company RealLab (www.rlda.ru). It has allowed undergraduates to pass a work practice at the enterprise, custom-making thematic tasks of the enterprise on a contractual basis. Graduates of magistracy successfully find a job at the enterprise, providing thus strengthening of personnel structure. In this study, we propose a technique of teaching of bachelors and masters in "Control of technical systems". The main thesis is to use the technique of through projecting throughout the entire learning process. The trajectory of training is built for the student based on a module of project activity, training and production practices. The student studies the object, develops the control algorithm, programs it, chooses a set of technical means throughout the entire period of training with an exit to the protection of the final qualifying work
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THE YOUTH SELF-GOVERNMENT IN RUSSIA: THE MOST IMPORTANT FACTORS, FUNCTIONS AND LEVELS
DescriptionThe article is devoted to the research of the main factors, functions and levels of the development of the youth self-government organizations in modern Russia. Youth self-government organizations represent one of the most successfully developing institutes of the civil society that uses the most efficient mechanisms of the participation of this category of citizens in the process of functioning of the governmental and non-governmental institutions and organizations. Youth self-government is characterized by such categories as versatility and divergence; it works at various levels and includes specific factors and functions
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Description
In the Southern Federal University on the genetic basis of sunflower inbred line 3629, a collection of plastid mutants with varying degrees of chlorophyll deficiency was created by inducing Nnitrosomethylurea. Chlorophyll content was associated with their photosynthetic activity. It was found that the lower the chlorophylls content in mutant plastids, the lower the sugar concentration in plant tissues. For example, during the entire period of plant growth for whites (1.0-3.0 % chlorophylls a+b from control) var- 10, var-17 and yellows (6.0-9.5 % chlorophylls a+b from control) var-29, var-33 leaf areas of variegated mutants depending on the development phase and the content of green pigments are characterized by a low (2-7 fold) sugar content. Yellow-green (75.5% chlorophylls a + b from control) leaves of en:chlorina- 7 contain a higher level of carbohydrates, although it is 1.5-2 fold lower than at line 3629. Monosaccharides are products of hydrolytic reactions catalyzed by β- glycosidases. It was shown, that the activity level of β- galactosidase and β-glucosidase exceeded the corresponding indicators of the control at 1.5-2 and 2-7 fold, respectively. Similarly to enzymes from the water-soluble fraction, membrane-bound β- glycosidases also showed increased activity in the leaves of the investigated mutants, compared to the control green plants of 3629. Consequently, the activity of β-glycosidases increases dramatically in leaf tissues with deficiency of photosynthetic. Thus, chlorophyll mutations can lead to a change in the expression of nuclear genes, resulting in a significant increase in the activity of β-glycosidases in the mutant organelles themselves
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RESULTS OF INTRODUCTION OF SPECIES OF FAMILY CAPRIFOLIACEAE JUSS. IN SFedU BOTANICAL GARDEN
DescriptionThe results of the introductory test of 22 species of the family Caprifoliaceae from 5 genera are analyzed: Abelia R. Br. (1 species), Diervilla Mill. (1 species), Kolkwitzia Graebn., Lonicera L. (15 species), Symphoricarpos Ducham. (2 species), Weigela Thunb. (2 species) in the Botanical Garden of SFedU. The estimation of ecological-biological properties, of degree of naturalization is given, of phenological development, of age status, of decorative longevity of these species. It has been established that 17 species have high winter hardiness: Kolkwitzia amabilis; Lonicera caprifolium, L. coerulea, L. chrysantha, L. demissa, L. dioica, L. ferdinandii, L. gracilipes, L. × heckrotii, L. japonica, L. morrowii, L. tatarica, L. × tellmanniana, L. trichosantha, Symphoricarpos hesperius and S. occidentalis, Weigela praecox; drought-resistant: Abelia × grandiflora, Kolkwitzia amabilis; Diervilla rivularis, Lonicera acuminata, L. caprifolium, L. confusa, L. chrysantha, L. demissa, L. ferdinandii, L. × heckrotii, L. japonica, L. morrowii, L. tatarica, L. × tellmanniana, L. trichosantha, Symphoricarpos hesperius and S. occidentalis, Weigela floribunda; medium-drought-resistant: Lonicera coerulea, L. dioica, L. gracilipes, Weigela praecox. Period of preservation of decorative qualities in plant ontogeny: Abelia × grandiflora - not less than 10 years; Diervilla rivularis, Lonicera dioica, Weigela praecox - 15-20 years; Lonicera demissa, L. gracilipes, Weigela floribunda - 20-25 years; Lonicera acuminata, L. caprifolium, L. coerulea, L. confuse, L. chrysantha, L. etrusca, L. ferdinandii, L. × heckrotii, L. japonica, L. morrowii, L. tatarica, L. × tellmanniana, species of Symphoricarpos – 25-30 years, Kolkwitzia amabilis – 30–35 years, Lonicera trichosantha 35–40 years
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SOLUTION OF THE OPTIMIZATION PROBLEM FOR ELASTIC-DAMPING MECHANISM PARAMETERS IN PLOWING MODE
DescriptionThe article is devoted to finding of the optimum parameters for elastically damping mechanism (EDM) which is located in transmission of machine-tractor unit (MTU). The investigated MTU is based on the tractor of 1.4 class in plowing mode. EDM is designed for MTU in order to make its’ start smoothly, to reduce the dynamic load in transmission, to protect engine from the external load vibration. The “transmittance level” (index T) is used as evaluation of the protective mechanism quality. The study was carried out by means of the experiment planning method, viz. the central composition plan of second order with five factors. A regression model for response function (“transmittance level”) is given. This model takes into account the chosen EDM characteristics. The statistical analysis methods (Student’s t-test, Fisher’s test) were used to study the regression model. The dependence of response function on each factor apart, their cross impact on the process are described. The system of partial differential equations is obtained to find the optimal values of parameters and response function. The optimal value of a “transmittance level” can be obtained by varying different EDM parameter values. Optimal values of parameters and as result - response function - allow improving of MTU functioning in plowing mode
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SEMANTIC SEARCH ENGINE BASED ON ONTOLOGY MAPPING
DescriptionWe live in a world of rapidly developing information technologies, where many organizations are related to each other, forming complex information networks. Therefore, storage, analysis and retrieval of information is a very complex and urgent task. In connection with the advent of search engines and communications, millions of people are engaged in the search and retrieval of information. Commercial search engines, such as Google, use keyword search based on logical queries. The main disadvantage of this search is that it returns a lot of irrelevant information, which leads to low accuracy. In this article, we focus on building a semantic search system based on the mapping of the ontological model. This includes various stages of development of ontology, the phase of indexing and information retrieval
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Description
Based on the analysis of modern scientific approaches to the construction of complex information-measuring systems, we have formulated a circuit solutions model of a distributed system of control of parameters of soil, the implementation of which will allow to build systems in small businesses
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MODELS OF NEURONS WITH MEMORY OF STATE FOR ORGANIZATION OF NEUROEVOLUTIONAL CALCULATIONS
DescriptionThe article discusses the model of a neuron with memory. The proposed model is formed based on the model of the dynamic neuron. The proposed solutions allow to efficiently model dynamic processes and to provide a two-level scheme for evolution of neural networks. The first level of evolution is achieved using traditional neuro-evolution models that allow you to create or to modify basic network settings. The second level allows you to track the history of the development process. The article presents a formal description of the proposed models and algorithms of functioning of the network, is the rationale for the use of the proposed models
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Description
The influence of auto-displacement in a resonancetunnel diode (RTD) on the dynamic range of amplifiers on these diodes is considered in the article. The amplification at resonance frequency is considered and the influence of higher harmonics is not taken into account, since they do not create a significant voltage drop at the nonlinear resistance of the diode. It is assumed that the gain will be sufficiently large, and then the nature of the dependence of the gain factors on the degree of regeneration will be the same for amplifiers "per pass" and "reflection". This allows us to consider the problem for both types of amplifiers on the RTD. The types of amplitude characteristics , which are possible for the RTD amplifier, are considered. The dependences of the parameter determining the dynamic range of the amplifier on the position of the operating point for several values of the product of the resistance on the direct current of the supply circuit are calculated for the value of the modulus of the maximum negative conductivity of the tunnel gap RG max. For each value of RG max for given parameters, you can determine the position of the operating point, which provides the specified amplifier mode. Dependences of the value of the dynamic range are constructed with allowance for auto-displacement and in the absence of auto-displacement for two values of the degree of regeneration. Taking into account autosplacement, two possible types of amplitude characteristics and boundaries of their existence were revealed. For these two types of amplitude characteristics, expressions were obtained that determine the dynamic range of the amplifier