Latest articles in this journal
ScienceRise, Volume 4, pp 33-39; doi:10.21303/2313-8416.2020.001388
The necessity of developing a mathematical model for the functioning of adaptive routing protocols in telecommunication networks with the ability to self-organize has been substantiated. The results of the study of the information transmission route choice in communication networks with the possibility of self-organization under the influence of deliberate interference and cyber-attacks are presented. New analytical dependencies have been obtained that allow calculating the influence of destabilizing factors on the efficiency of determining the route in the network. Object of research: development of a mathematical model of the functioning of adaptive routing protocols in telecommunication networks with the ability to self-organize. Investigated problem: taking into account additional destabilizing factors when choosing the information transmission route. Main scientific results: when forming a route in a special-purpose network with the possibility of self-organization, the following are taken into account: battery charge, information transfer rate, the presence of cyber-attacks, the presence of deliberate interference, the reliability of the route and the time of packet delivery to the addressee. It has been established that the use of all parameters in the system allows to increase both the total operating time of a special-purpose network with the ability to self-organize as a whole, and an individual node. It is shown that the presence of a DoS attack in the network is identified by increasing the delay time for information transmission between network nodes. Review of the practical use of research results: automated systems for various purposes. Innovative technologies product: a technology for choosing the information transfer route, which can increase the efficiency of choosing the information transfer route, taking into account additional destabilizing factors. Review of an innovative technological product: automated control systems, network controllers when choosing a route for information transmission.
ScienceRise, Volume 4, pp 46-52; doi:10.21303/2313-8416.2020.001392
Subject of research: forecasting the formation of pharmaceutical glass waste in medical institutions, taking into account the peculiarities of the use of medicines during the COVID-19 epidemic in Ukraine. Research problem: Predicting the formation and accumulation of pharmaceutical glass waste in hospitals in order to implement effective environmental management and determine the resource possibilities for further waste disposal. Main scientific results: A model has been developed that can be used to predict the generation of pharmaceutical waste from glass in hospitals in the country during an epidemic, as well as in the presence of the necessary input data in a non-epidemic period. Based on regression analysis and using the Minitab-19 software, the dependences of the volume of pharmaceutical waste from glass on three variable factors were determined. Using statistical data on the incidence of COVID-19 in Ukraine, using the developed model, the PGW volume in the Volyn region for a given period of time was calculated. The scope of practical application of the research results: planning of measures to improve the environmental safety of handling pharmaceutical glass waste; development of business models for the disposal of this waste. An innovative technological product: the predictive model helps to identify the resource possibilities of using pharmaceutical glass waste for industrial waste disposal. Scope of application of the innovative technological product: medical waste management, industrial disposal of pharmaceutical glass waste.
ScienceRise, Volume 4, pp 53-58; doi:10.21303/2313-8416.2020.001395
The aim of the research was to establish criteria for successful weaning from mechanical ventilation in children based on analysis of Paediatric rapid shallow breathing index, maximum amplitude of diaphragm movements, diaphragm thickening fraction and pressure support (PS), which ensure minimal respiratory muscle load, level of consciousness which ensure minimal respiratory muscle load and presence of cough and swallowing reflexes and previous unsuccessful attempts of weaning. Investigated problem: there is no consensus on the basic physiological parameters for successful extubation that have to be achieved during weaning from mechanical ventilation in children due to variability in size and degree of maturity of lungs and patients’ comorbidities. It leads to the lack of clinical justification for the routine practice of weaning in children. The main scientific results: We have established a list of causes of unsuccessful weaning depending on the function of the diaphragm in children with different types of respiratory failure. We have clarified and supplemented the list of reasons for unsuccessful weaning from mechanical ventilation depending on nutritional status and level of serum electrolytes in children. We have identified and supplemented the list of reasons for unsuccessful weaning from mechanical ventilation depending on the disorders of neurological status in children. We have supplemented the algorithm for predicting difficult weaning from mechanical ventilation in children. The area of practical use of the research results: the obtained results have to increase the rate of successful weaning in children with acute respiratory failure in pediatric intensive care units.
ScienceRise, Volume 4, pp 17-23; doi:10.21303/2313-8416.2020.001391
The object of research is a screen-exhaust device in the TV3-117 engine of the Mi-8 helicopter. Investigated problem: The problem of equalizing the flow in the exhaust nozzle is solved. As a result of the numerical study, the total pressure losses are calculated and the flow structures in the structural elements of the exhaust nozzle and the screen-exhaust device (SED) are analyzed. Main scientific results: Obtained Gas-dynamic parameters of the flow in the SED flow path are obtained and the verification of injection processes between the working circuits along the path in the SED design is done. Numerical modeling of gas flows in the SED flow path makes it possible to study in detail the characteristics of the flow at any of its points, as well as to determine the values of hydrodynamic losses associated with the formation of a boundary layer and the emergence of separation zones. A constructive method for leveling the gas-dynamic flow is proposed by installing a blade in the form of an aerodynamic profile in a standard engine exhaust nozzle. Two variants of engine nozzles are investigated under the same boundary conditions using a standard exhaust nozzle with and without a blade. The influence of uneven flow in the exhaust nozzle on the nature of the flow in the SED is shown. An insignificant equalization of the flow in the exhaust nozzle using the installed blade led to a decrease in the total pressure loss in the SED by more than 1 %. The area of practical use of the research results: The results of calculations and modeling can be used for computational and experimental studies aimed at improving the flow path of the exhaust nozzle and the screen-exhaust device by the developers of new military aviation equipment or when modernizing the existing helicopter fleet. Scope of application of the innovative technological product: a new screen-exhaust device has been proposed for left and right TV3-117 engines of all types, which can be installed on the Mi-8MSB-V, Mi-8MT, Mi-14, Mi-24 helicopters. It is competitive and has significantly higher technical and economic indicators compared to known analogues.
ScienceRise, Volume 4, pp 40-45; doi:10.21303/2313-8416.2020.001393
The necessity of developing a mathematical model for the functioning of multi-antenna radio communication facilities with spectrally effective signals under the influence of destabilizing factors has been substantiated. The results of the study of the influence of destabilizing factors on the multi-antenna systems with spectrally effective signals are presented. New analytical dependences have been obtained, which make it possible to calculate the effect of destabilizing factors on the efficiency of multi-antenna system with spectrally effective signals. Object of research: development of a mathematical model of the functioning of multi-antenna radio communication facilities with spectrally effective signals under the influence of destabilizing factors. Investigated problem: taking into account additional destabilizing factors on the multi-antenna of a radio communication facility with spectrally effective signals. Main scientific results: when transmitting information in multi-antenna radio communication systems with spectrally effective signals, the following are taken into account: Type of parameters of deliberate interference, type and parameters of deliberate fading, type and parameters of security code structures, phase jitter, slope of the constellation matrix, Intersymbol interference, high mobility of objects (transmitter and receiver), the number of receiving and transmitting antennas, the number of subcarriers in the antenna channel. It has been established that taking into account all the parameters in the system makes it possible to assess the state of the channel, to develop measures to reduce the negative influence of destabilizing factors on the noise immunity of multi-antenna systems. A review of the practical use of research results: radio communication facilities with programmable architecture. Innovative technologies product: technology for substantiating the architecture of transceivers, software for programmable radio equipment, which can increase the noise immunity of radio communications, taking into account additional destabilizing factors and software for radio monitoring equipment. Overview of an innovative technological product: programmable radios, software for radio communications.
ScienceRise, Volume 4, pp 10-16; doi:10.21303/2313-8416.2020.001389
The object of research. Process of oscillation of the Helmholtz resonators. Investigated problem. Differences between some formulas for the calculation of the resonant frequency of the Helmholtz resonator and the most accurate of them were established. The effect of acoustic design on the Helmholtz resonator frequency value and influence of the attached air mass between the neck of the Helmholtz resonator and free field were investigated. The main scientific results. As a result of a numerical experiment, analytical ratios were obtained that allow obtaining the most accurate results. One of them is the most optimal for calculating the resonator resonant frequency in a free field, and in this case, less than 1 % inaccuracy level can be achieved, given that r/R
ScienceRise, Volume 4, pp 24-32; doi:10.21303/2313-8416.2020.001396
The stress-strain state of a road structure with shallow tubular drainage, which is arranged on waterlogged sections of public highways, has been investigated. Three-dimensional models of the road structure with pipes made of various materials were built using the finite element method. Experimental studies on models were carried out for cases of normative and over-norm load on the basis of the SCAD Office software and calculation complex. The distribution of normal stresses, deformation values in the road structure and directly in the body of the tubular drain is obtained. The working conditions were determined and the expediency of using PVC pipes and concrete pipes on the road of III category was substantiated. Subject of research: stress-strain state of a road structure with shallow transverse tubular drainage. Investigated problem: determination of deformations in a road structure with tubular drains based on the distribution of normal stresses. Main scientific results: distribution of isopoles and isolines of normal stresses, deformation values in road structures with shallow transverse tubular drainage. The expediency of using the type of drainage pipes on waterlogged sections of roads under conditions of excess load has been determined. The area of practical use of the research result: design institutions and enterprises specializing in the road transport industry. An innovative technology product: stress and strain distribution in atypical road structures with tubular holes. Scope of application of the innovative technological product: for the design of atypical road structures with tubular holes on waterlogged road sections.
ScienceRise, Volume 4, pp 3-9; doi:10.21303/2313-8416.2020.001390
The object of research is the thermal and humidity processes occurring during artificial cooling of atmospheric air to the dew point temperature in the evaporators of refrigeration machines of the compression and absorption type. This study solves the problem of finding energy efficient heat and humidity modes for cooling atmospheric air to the dew point temperature in regions with a shortage of water resources and high solar installations. It is shown that practically in all considered climatic zones with a shortage of water resources, the process of obtaining water from atmospheric air is most energetically expended in the winter period of the year, and the most energetically efficient - in the summer period. In the summer period of the year, the specific energy consumption is numerically comparable in the cooling temperature range from 5 °C to 15 °C. It is also shown that the application of the technology of night radiation will create a reserve of natural cold for additional cooling of condensers of refrigerating machines of various types during the entire period of operation. The area of practical use of the research results: compression and absorption refrigeration machines operating in systems for obtaining water from atmospheric air and taking into account seasonal changes in the thermal and humidity parameters of atmospheric air. An innovative technological product: energy-efficient systems for obtaining water from atmospheric air based on refrigeration machines of the compression and absorption type, which also work with the help of solar radiation. Scope of application of the innovative technological product: systems for supplying the population with drinking and process water, mainly in areas with a shortage of water resources.
ScienceRise, Volume 3, pp 36-42; doi:10.21303/2313-8416.2020.001347
This study, the object of which is globalization in its modern modifications, is devoted to the analysis of trends in the deployment of globalization processes in modern sociocultural contexts. The features of postmodern societies, which are informational and multicultural societies, risk and knowledge societies are analyzed. Based on the author’s comprehensive research methodology, globalization, its structure, semantics, functional range and constructive potential are considered. Particular attention is paid to intercultural communication as a tool to overcome possible "zones of misunderstanding." It turns out its horizontal and vertical dimensions, gender communication is considered as an example of horizontal deployment. The role of education and upbringing in the formation of the imperative of tolerance is highlighted. It is proved in the work that taking into account the unity of these measurements is of fundamental importance for increasing the efficiency of the formation of a person’s readiness to respond to life's challenges. Investigated problem. Among modern challenges, globalization pays special attention, absorbs light at an accelerated pace. Despite the fact that this thematic field was developed by a number of researchers, this problem remains relevant today especially since sociocultural contexts are changing, emphasis is shifting. Due to the global pandemic, the corona of the virus of the state is becoming more closed. The perception of globalization processes occurs through an analysis of potential risks for self-preservation. Despite this, integration processes continue, therefore, teaching a person intercultural communication skills remains relevant. The main scientific results. The scientific novelty of research is to create a metatheoretical model of globalization and intercultural communication as its component in general civilization and national contexts on the basis of the author’s methodological program, the application of which made it possible to significantly deepen the understanding of the globalization construct, to reveal the functional potential of intercultural communication as necessary in the construction and implementation of successful life-saving strategies. Scope of the practical application of the research results. Practical value is determined by the totality of the analyzed problems, which expand the horizons of understanding the phenomenon of globalization and intercultural communication. The proposed methodological research program can be used in the further development of problems of national education strategies in the era of globalization, in the teaching of special courses in the philosophy of education, theoretical and comparative pedagogy, the sociology of education and culture. The results of the study were introduced into the educational process of the H. Skovoroda Kharkiv National Pedagogical University, the Ternopil V. Hnatiuk National Pedagogical University, the Kharkiv College of Trade and Economics of the Kyiv National University of Trade and Economics.