Fermi-liquid and Fermi surface geometry effects in propagation of low frequency electromagnetic waves through thin metal films

In the present work we theoretically analyze the contribution from a transverse Fermi-liquid collective mode to the transmission of electromagnetic waves through a thin film of a clean metal in the presence of a strong external magnetic field. We show that at the appropriate Fermi surface geometry the transverse Fermi-liquid wave may appear in conduction electrons liquid at frequencies $\omega$ significantly smaller than the cyclotron frequency of charge carriers $\Omega$ provided that the mean collision frequency $\tau^{-1}$ is smaller than $\omega.$ Also, we show that in realistic metals size oscillations in the transmission coefficient associated with the Firmi-liquid mode may be observable in experiments. Under certain conditions these oscillations may predominate over the remaining size effects in the transmission coefficient.Comment: 9 pages, 5 figures, text adde

COMPLEX APPROACH TO THE ANALYSIS OF AN SITUATION OF ENTERPRISE IN INDUSTRY ENVIRONMENT

A complex approach to the positioning of the enterprise in the industry environment is discussed in this article The possibilities of express-analysis and detailed сomplex approach to appraisal of activity of the enterprise are analysed. Indicators are described that are used for express-analysis and сomplex assessment, which has several directions: the competitiveness of products; financial and economic dependence; the competitive position of the enterprise

COMPLEX APPROACH TO THE ANALYSIS OF AN SITUATION OF ENTERPRISE IN INDUSTRY ENVIRONMENT

A complex approach to the positioning of the enterprise in the industry environment is discussed in this article The possibilities of express-analysis and detailed сomplex approach to appraisal of activity of the enterprise are analysed. Indicators are described that are used for express-analysis and сomplex assessment, which has several directions: the competitiveness of products; financial and economic dependence; the competitive position of the enterprise

Modeling rhythmic patterns in the hippocampus

We investigate different dynamical regimes of neuronal network in the CA3 area of the hippocampus. The proposed neuronal circuit includes two fast- and two slowly-spiking cells which are interconnected by means of dynamical synapses. On the individual level, each neuron is modeled by FitzHugh-Nagumo equations. Three basic rhythmic patterns are observed: gamma-rhythm in which the fast neurons are uniformly spiking, theta-rhythm in which the individual spikes are separated by quiet epochs, and theta/gamma rhythm with repeated patches of spikes. We analyze the influence of asymmetry of synaptic strengths on the synchronization in the network and demonstrate that strong asymmetry reduces the variety of available dynamical states. The model network exhibits multistability; this results in occurrence of hysteresis in dependence on the conductances of individual connections. We show that switching between different rhythmic patterns in the network depends on the degree of synchronization between the slow cells.Comment: 10 pages, 9 figure

THEORETICAL BASES OF THE MACHINE-BUILDING ENTERPRISES ASSORTMENT POLICY FORMATION

A number of theoretical and scientic and practical aspects of pros-pects of the commodity range of the modern enterprise of mechanical engineer-ing is considered. It is shown that in the analysis of the product range in activity of machine-building enterprises it is expedient to unite her in groups on various criteria. By results of a research authors have given criteria and conditions of prospects of separate types of goods for the purpose of formation of the perspec-tive production program of the enterprise and also the main directions of devel-opment of assortment policy

Developmental psychology: Parent responsiveness and its role in neurocognitive and socioemotional development of one-year-old preterm infants

Background. It has been demonstrated that preterm birth negatively affects the neurocognitive and socioemotional development of a child. It is therefore important to identify the factors that can decrease potential risks for atypical development in preterm infants. The social environment which surrounds a child is considered to be one such factor. We hypothesize that parent responsiveness positively influences the development of a preterm child. Objective. The purpose of this research is to reveal differences in the development of two one-year-old preterm children whose parents have exhibited opposite types of parent responsiveness. Design. Based on the analysis of video recordings of child-parent interactions, we identified two children whose parents registered opposite patterns of responsiveness. Parent responsiveness was measured based on Parent Responsiveness Markers Protocol methodology. The Bayley-III was used to assess the children's cognitive and socioemotional development. Results. We identified that the preterm child whose parent showed a high level of parental responsiveness had normative levels of neurocognitive development, socioemotional skills and adaptive behavior. The preterm child, whose parent showed a low level of parental responsiveness, scored lower on the Bayley-III. Conclusion. Preterm birth not only affects infant development, but also has a psychological impact on parents, evoking fear and anxiety for their child. This affects parental behavior and their responsiveness towards their child. This study showed that parent responsiveness has a positive effect on the neurocognitive and socioemotional development of a preterm child. Further research should focus on assessing the role of parent responsiveness in child development using a larger sample. © Lomonosov Moscow State University, 2019. Russian Psychological Society, 2019.19-513-92001\19The research was supported by the grant of the Russian Science Foundation RFBR № 19-513-92001\19

PROFESSIONAL DEVELOPMENT OF CIVIL SERVANTS IN THE CONTEXT OF THE DIGITAL TRANSFORMATION

Digital transformation in governance is possible subject to a change in the corporate culture of the federal authorities. Training and a modern system of professional development of public authorities based on digital solutions and requiring digital skills are becoming the most important tool for changing culture. At the same time, the digitalization of the processes of organizing the professional development of civil servants is impossible without improving this system, including building interconnection with the development strategy of the state body (sphere, department), the system for assessing and motivating civil servants, and their career development. The approaches to planning the professional development of civil servants, quality assessment and examination of educational programs require updating. These processes must be based on modern digital solutions and services. The object of the research is the activities of state bodies and subdivisions regulating the sphere of professional development of civil servants. The purpose of the study is to develop proposals for improving the system of professional development of public authorities in the context of the government digital transformation. The tasks are related to the analysis of the current state of the professional development system in public authorities, the development of proposals for improving the system of professional development in governance in the context of digitalization and client (citizen) centricity. The novelty of the research is determined by the introduction of new state data of the professional development system of civil servants and the proposed model of the system maturity levels under study. The research is based on a systemic approach and a comparative method. The following empirical methods are used: sociological research (in-depth interviews, polls of civil servants); analysis of documents, expert sessions; modeling. The result of the research was the development of proposals for improving the system of professional development in the aspect of creating unified methodological approaches to the professional development of civil servants. The main conclusions relate to the application of the maturity level model of this system and the possibility of its use to update the existing approaches and methodological tools. A special place is occupied by proposals for the improvement of the Unified Information System for Personnel Management of the State Civil Service of Russia (EISU KS) and the Unified Specialized Information Resource (EIR) services for professional development of civil servants. The results of research can be used in the interests of federal authorities and regional governments, the Office of the President of the Russian Federation for Civil 7 Service and Personnel, the Human Resources Department of the Government of the Russian Federation, the Ministry of Labor and Social Protection of the Russian Federation to improve work on the professional development of civil servants. The prospects of the study are associated with the implementation of the proposed model of maturity levels and the development of methodological tools for moving to higher levels in terms of organizing professional developmen

Drug Mass Transfer Mechanism, Thermodynamics, and In Vitro Release Kinetics of Antioxidant-encapsulated Zeolite Microparticles as a Drug Carrier System

The aim of the present study was to develop a new vitamin E-zeolite drug carrier system, and investigate the mass transfer mechanism of the antioxidant encapsulation and release on/from the mineral matrix by thermodynamic and kinetics sorption/desorption experiments and mathematical modelling of the experimental data. The surface, morphological and spectral characteristics of the vitamin and the zeolite were determined by Boehm titration, SEM, FTIR and UV/Vis spectrophotometric analyses. Intraparticle diffusion was not the only rate-limiting mechanism, as the mixed-order kinetics model gave the highest regression coefficient (R2) and lowest SSE, MSE, RMSE, and AICC values. The thermodynamic study confirmed the endothermic nature of the spontaneous encapsulation process and increased degrees of randomness at the solid-liquid interface. The in vitro release results were best modelled by the zero-order and sigmoidal models. The results obtained are essential for the development of innovative vitamin E-carrier systems for application in human and veterinary medicine