ScienceRise最新文献

{"title":"Integration of kinematic and dynamic mathematical models of a two-axle electric car in the problem of estimating its stability on turns","authors":"V. Horeniuk","doi":"10.21303/2313-8416.2021.002145","DOIUrl":"https://doi.org/10.21303/2313-8416.2021.002145","url":null,"abstract":"Object of research: the process of movement of cars with internal combustion engines or the electric drive on a road curve. \u0000Investigation problem: assessment of the stability of cars with internal combustion engines or electric drive on a road curve and determination of conditions of its ensuring. \u0000The main scientific result. The article evaluated the stability of cars with internal combustion engines or electric drive on a road curve and determines the conditions of its ensuring using an algorithm that combines mathematical models of car movement on a road curve, synthesized based on balance equations of both kinematics and dynamics. The proposed models consider the change in speed of cars while driving on a road curve, and therefore belong to the class of differential equations. The analysis of these models allows calculating changes in time of values of limiting and critical speeds of movement of the car on a road curve. The article identifies the prospects of integration into this set of mathematical models another one, synthesized in the space of linguistic variables that characterize the uncertainty of the road surface and the degree of tire wear on different wheels of the car. \u0000The area of practical application of the research results: Automotive enterprises specializing in equipping cars with traffic control systems. \u0000Innovative technological product: A method of determining the limiting parameters of movement of the car on road curves, at which the car does not overturn while passing turns, and an algorithm for its implementation, which combines kinematic and dynamic mathematical models of car movement on the road curve. \u0000Scope of application of the innovative technological product: Equipping cars with additional control systems that assess the critical values of the traffic parameters on turns to ensure the conditions of non-overturning when the car passes these turns","PeriodicalId":30651,"journal":{"name":"ScienceRise","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48655681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental research of mass transfer in a stabilized foam layer","authors":"Viktor Moiseev, E. Manoilo, Oleg Khukhryanskiy, K. Repko","doi":"10.21303/2313-8416.2021.002123","DOIUrl":"https://doi.org/10.21303/2313-8416.2021.002123","url":null,"abstract":"The object of research: mass transfer processes on a combined contact element in a column apparatus. \u0000Investigated problem: determination of the regularities of process parameters in the processing of gas-liquid systems in a foam layer, as well as to interpret the obtained experimental data. The problem of processing industrial gas flows is solved by conducting the process in an intensive mode. \u0000The main scientific results: as a result of the study, the regularities of ammonia absorption were revealed depending on the main parameters of the experiment: gas velocity in the column cross-section, ammonia concentration, free cross-section of the combined contact element, and liquid loads. The process of mass transfer in the gas phase is significantly influenced by hydrodynamic parameters – the gas velocity in the apparatus and the specific load on the liquid, which indirectly affect the height of the liquid layer on the plate and the gas content of the layer. \u0000The area of practical use of the research results: sorption processes for processing gases and liquids in technological processes, absorption of harmful substances in the treatment of gas emissions. \u0000Innovative technological product: new block poppet-nozzle contact device that operates in a stabilized hydrodynamic mode; new ball-shaped weighted nozzle for three-phase foam layer. \u0000Scope of application the innovative technological product: technological processes in the treatment of gas emissions or technological gases.","PeriodicalId":30651,"journal":{"name":"ScienceRise","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45057639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The continuing relevance of late Dr W.E.B. Du Bois to African scholarship","authors":"Shaka Yesufu","doi":"10.21303/2313-8416.2021.002126","DOIUrl":"https://doi.org/10.21303/2313-8416.2021.002126","url":null,"abstract":"The objects of this research are: first, to explore the uniqueness and visionary thinking of Dr W.E.B. Du Bois concerning the concept of race and racism over time. Second, to highlight the socio-economic conditions and disempowerment of blacks living in different countries of the world. Third, is an attempt to review his work and its relevance to African scholarship by using the qualitative research method, enabling us to understand the philosophical impetus arising out of his valuable contribution to African scholarship. \u0000The author investigated the following problems: social problems, caused by racism, discrimination race, exploitation, black disempowerment, inequality, and social justice. \u0000The main results of the research are: The findings of this study are: first, the importance of unity of the Africa people is crucial for its development. Second, the implementation of educational policies, political leadership, a vibrant economy, and the establishment of the military to protect Africa’s global interests are all very important for its survival and development. Third, is the highlighting of the level of grave injustice faced by both Dr Du Bois and his wife in the hands of the US law enforcement services. Fourth, it was found that the African continent is not economically independent. Fifth, it is only through the unity of African peoples and countries that it can eventually lead to its development and progress. \u0000The area of practical use of the research is for all citizens, directly or indirectly affected by race, racism, disempowerment, and social inequalities that still permeate contemporary societies.","PeriodicalId":30651,"journal":{"name":"ScienceRise","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43770887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Peculiarities of public debt management policy in the United States of America: experience for Ukraine","authors":"I. Moroz","doi":"10.21303/2313-8416.2021.002040","DOIUrl":"https://doi.org/10.21303/2313-8416.2021.002040","url":null,"abstract":"The object of research is the policy of public debt management of the United States of America and Ukraine. \u0000The problem solved is the low level of efficiency of the policy of public external and internal debt management of Ukraine in the context of financing economic growth. \u0000The main scientific results: based on the analysis of the policy of public debt management of the United States of America, it has been proved, that the public debt and the US budget deficit should be perceived not as a problem or threat to macroeconomic stability, but as a tool to stimulate economic growth. It is substantiated, that in order to optimize the policy of internal and external public debt management of Ukraine it is expedient to introduce a debt rule, which is based on the program-targeted method of attracting public debt and provides for the use of public borrowing exclusively to finance economic development programs. In this case, Ukraine, following the example of the United States, will be able to achieve sustainable economic growth, because changing the priorities from debt financing of current state budget expenditures to financing capital expenditures will allow the Ukrainian government to develop economic infrastructure, create conditions for high value-added goods and to develop small and medium business, which will ultimately ensure macroeconomic stability and progressive economic development of the state. \u0000The scope of practical use of research results. The results of the study can be used by the Cabinet of Ministers of Ukraine, and in particular by the Ministry of Finance during the formation of the Medium-Term public debt management strategy of Ukraine. \u0000Innovative technological product: The debt rule is based on the program-target method of attraction and use of the state internal and external debt that allows to use effectively the state borrowings for financing of economic growth. \u0000Scope of application of an innovative technological product: Policy of management of the state internal and external debt of Ukraine","PeriodicalId":30651,"journal":{"name":"ScienceRise","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41366167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Trial using of ultrasonic cavitation in cottonization processes of hemp fibers","authors":"Olha Hych, Oksana Zakora, Mariia Rastorhuieva, A. Zilinskyi","doi":"10.21303/2313-8416.2021.002042","DOIUrl":"https://doi.org/10.21303/2313-8416.2021.002042","url":null,"abstract":"The object of research: ultrasonic processing technology of textile materials. \u0000Investigated problem: increasing the degree of splitting of complex hemp fibers due to the effect of the mechanism of ultrasonic cavitation on them. \u0000The main scientific results: The article shows the potential of textile production to ensure the environmental friendliness of textile products, and the development and implementation of new eco-technologies of physical and mechanical cottonization of hemp fiber is important in this. Analysis of existing methods of cottonization and structural features of hemp fibers has led to the conclusion that the destruction of cellulose satellites in complex fiber can be considered as a process of purification from impurities, since the technologies for purification of substances in the aquatic environment by ultrasound now are widely used. Therefore the process of cottonization of hemp by technology of ultrasonic treatment was used in this investigation for the first time. The basic principle effect on the textile material what placed in the liquid are the hydroacoustic effects formed by the collapse of cavitation bubbles in the contact zone \"liquid-material\". Experimental studies of the geometric characteristics of the obtained hemp cottonine were carried out, and the effectiveness of the effect of ultrasonic vibrations on the change of the structure of hemp fiber was confirmed. Due to the removal of inlaid substances under the action of cavitation, the complex fibers of hemp were split, as a result of which the range of variation and the absolute value of their length and linear density were decreased. \u0000The scope of practical use of the research results: textile enterprises of deep processing of bast raw materials into technical and household yarns. \u0000Innovation technological product: technology of ultrasonic cottonization of hemp fibers. \u0000The scope of using the innovation technological product: manufacturing of textile hemp products for general use.","PeriodicalId":30651,"journal":{"name":"ScienceRise","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43109799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of properties of wheat germins and meals and their use in the production of dietary hardtacks","authors":"P. Pyvovarov, Tetiana Cheremskaya, M. Kolesnikova, S. Iurchenko, Svitlana Andrieieva","doi":"10.21303/2313-8416.2021.002039","DOIUrl":"https://doi.org/10.21303/2313-8416.2021.002039","url":null,"abstract":"Object of research: technology of production of dietetic hardtacks using germs and meal of wheat germ, by defatting them. \u0000Investigated problem: the process of defatting wheat germ meal not only reduces the total amount of lipids, but also contributes to a change in the ratio of individual fatty acids. \u0000Main scientific results: in order to use wheat germ meal as the main raw material, together with wheat germ in the production of dietetic hardtacks, their amino acid composition, biological value and balance of essential amino acids were studied in comparison with the FAO/WHO standard. The mineral, vitamin and fatty acid composition of the germ and meal of wheat germ has been determined. The results obtained were used in the development of the recipe composition and the technological process for the production of dietetic hardtacks. \u0000The results obtained (calculation of the balance according to the \"tryptophan\" and \"threonine\" indices) confirm that wheat germ meal is a valuable raw material that can be used in technologies for the production of high-protein food products. \u0000The moisture-absorbing capacity of wheat germ and meal was studied in order to determine their ability to form dough. It has been established that the best performance is characterized by a mixture of wheat germ meal and wheat germ in a ratio of 80:20. \u0000The ability of digestion by enzymes of the gastrointestinal tract \"in vitro\" of wheat germ meal proteins has been investigated, which determines the biological value of food products and makes it possible to predict the degree of their utilization by the body. \u0000The field of practical use of the research results: production of dietetic hardtacks in restaurant enterprises, in specialized confectionery shops, as well as within the boundaries of food production \u0000An innovative technological product: the possibility of using valuable secondary raw materials in food production technology – wheat germ and meal, which is a source of high-quality protein, vitamins and minerals. This will make it possible to adjust the nutritional and biological value of flour confectionery products, as well as improve the nutritional structure of consumers of these products. \u0000Scope of application of an innovative technological product: dietetic hardtacks","PeriodicalId":30651,"journal":{"name":"ScienceRise","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49666388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficiency determination of methods for eliminating the polarization layer in the process of membrane concentration of buttermilk","authors":"O. Omelchenko, Gregoriy Deynichenko, Vasyl Huzenko, I. Zolotukhina, D. Dmytrevskyi, V. Chervonyi, D. Horielkov, Olga Melnik, O. Korolenko, L. Tsvirkun","doi":"10.21303/2313-8416.2021.002021","DOIUrl":"https://doi.org/10.21303/2313-8416.2021.002021","url":null,"abstract":"The object of research: the process of membrane concentration of buttermilk using methods of removing the polarizing layer on the membrane surface. \u0000Investigated problem: determination of the effectiveness of methods for eliminating the polarization layer on the membrane surface during membrane concentration of buttermilk. \u0000Main scientific results: The results of experimental studies on methods of removing the polarization layer to increase the productivity of ultrafiltration equipment in the process of membrane concentration of buttermilk are presented. Mathematical models are proposed based on the regression equation of a factorial experiment using the elimination of the polarization layer on the membrane to determine the rational operating parameters of the membrane concentration of buttermilk. These parameters were determined: pressure – 0.4 … 0.5 MPa, buttermilk temperature – 40 … 50 °С, speed of pulsating flows – 1.5 … 1.7 m/s, frequency of bubbling of raw materials – 0 , 10 … 0.15 min-1, bubbling pressure – 0.56 … 0.58 MPa. A comparative analysis of the application of the method of vibrational mixing and bubbling of separated non-fat dairy raw materials to eliminate the formation of a polarization layer on the surface of membranes in the process of membrane concentration is presented. Based on the obtained quantitative and qualitative characteristics of the ultrafiltration products, it can be seen that vibrational mixing and bubbling of the processed buttermilk equally intensify the process of membrane concentration of buttermilk. \u0000The area of practical use of the research results: enterprises of the dairy industry of the food industry, engaged in waste-free processing of dairy raw materials and its by-products. \u0000An innovative technological product: devices for reducing the polarization layer, allowing to increase the performance of membranes in the process of membrane concentration of buttermilk. \u0000Scope of application of the innovative technological product: waste-free processing of dairy raw materials at dairies and dairy plants and other food industry enterprises.","PeriodicalId":30651,"journal":{"name":"ScienceRise","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47576612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Genetic algorithm application for electrodynamic transducer model identification","authors":"D. Volkov, Artem Zubkov, V. Didkovskyi","doi":"10.21303/2313-8416.2021.002008","DOIUrl":"https://doi.org/10.21303/2313-8416.2021.002008","url":null,"abstract":"Research object: the adaptation and application of the genetic algorithm for electrodynamic transducer model parameters identification. \u0000Investigated problem: to formulate loudspeaker identification task as an optimization problem, adapt it to the genetic algorithm framework and compare obtained results with classical identification method using added mass. \u0000Main scientific results: the complete genetic algorithm loudspeaker identification procedure is presented, including: \u0000– data acquisition scheme, where the directly measured values for the algorithm application are: voltage at loudspeaker terminals, current through the voice coil and displacement of the moving part \u0000– selection of an appropriate set of genes of an individual \u0000– derivation of the fitness function for assessing the quality of the identified parameters, which can also be used to identify other types of electroacoustic transducers \u0000Also, the advantages of this method in comparison with the classical method of identification using added mass are considered, that are its versatility and ability to quickly configure and adapt for research and experimentation with different loudspeaker models and different types of transducers used in acoustics. \u0000Area of practical use of the research results: the proposed genetic loudspeaker model identification scheme can be directly applied on practice to speed up research and development tasks in electroacoustics and other related fields that require frequent experimentation with different types of transducer models. \u0000Innovative technological product: genetic algorithm based loudspeaker identification scheme that can be applied to identify various model of electrodynamic transducers. \u0000Scope of application of the innovative technological product: electroacoustics, loudspeaker design, audio systems","PeriodicalId":30651,"journal":{"name":"ScienceRise","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44550979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Shifting the operating frequency of the piezoceramic electroacoustic transducer langevin type using passive cooling methods","authors":"Liudmyla Perchevska, O. Drozdenko, K. Drozdenko","doi":"10.21303/2313-8416.2021.002019","DOIUrl":"https://doi.org/10.21303/2313-8416.2021.002019","url":null,"abstract":"The object of research: the shift of resonant frequency of the piezoceramic electroacoustic transducer Langevin type depending on the shape of the back plate. \u0000Investigated problem: the relationship between changes in shape of back plate of the Langevin type transducer with the resonant frequency of the oscillating system.  Search quantitative contribution to shift the resonant frequency of each of the modifications: shape, diameter, thickness, weight of back plate. \u0000The main scientific results: vibration modes of a transducer with a back plate with horizontal and vertical radiator ribs were obtained. The graphs of the shift resonant frequency depending on the change in the diameter and thickness of the back tail with vertical radiator ribs are presented. It is established, that the change in the thickness and diameter of the back plate of the transducer effects on resonance frequency much less than the change in mass. \u0000The area of practical use of the research results: designing piezoceramic electroacoustic transducer with passive cooling method. \u0000Innovative technological product: guidelines for choosing the shape changes back plates of the Langevin type transducer for decreasing heating temperature, with keeping resonant frequency. \u0000Scope of the innovative technological product: scope of application of the Langevin type transducer: underwater acoustics, ultrasonic technological equipment, ultrasonic engine, piezotransformer, medical equipment, rock drilling devices.","PeriodicalId":30651,"journal":{"name":"ScienceRise","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42977926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Formation of earth ethics in the context of technological culture of the late modern era","authors":"S. Pylypenko","doi":"10.21303/2313-8416.2021.002009","DOIUrl":"https://doi.org/10.21303/2313-8416.2021.002009","url":null,"abstract":"Object of research: technological culture as a matrix of interaction of the components of the system \"man – society – nature/Earth\". \u0000Investigated problem: the substantiation of the meaning of the Ethics of the Earth in the context of technological culture, transforms the moral and value system of the late Modern era and provokes the emergence of the era of Posthumanism. \u0000The main scientific results: the definition of the technological culture of the late Modern era made it possible to determine the existing contradictions in the moral dimension of the existence of man and the Earth. It should be noted that in the context of the technological transformation of the Earth, the existing ethics as a monoparadigm of the Enlightenment does not correspond to the challenges of the beginning of the XXI century. It is emphasized that the ethical dimension of the introduction of technologies into the existence of the Earth is an indispensable component of modern scientific discourse. It is not only about the ethical dimension of technology, but also the importance of the formation of the Ethics of the Earth. This allows to conclude that a person determines its moral position relative to the Earth in the context of the technological transformation of the Earth's existence. \u0000The scope of practical use of the research results: the research results can be used in teaching such normative courses as \"Philosophy\", \"Philosophical Anthropology\", \"Culturology\" for students and undergraduates, graduate students of humanitarian and technical faculties. \u0000Innovative technological product: Ethics of the Earth destroys the concept of the Earth as an object that is external to humans. The anthropological dimension of the Earth testifies to the fact that a person should be clearly aware of the responsibility for its activities, since the existence of the Earth is a condition for the existence of a person. \u0000The scope of using the innovative technological product: the substantiation of the Earth Ethics corresponds to the polyparadigmatic optics of the modern post-non-classical scientific discourse, where a person is one of the constituent parts of the nature / Earth system. The post-non-classical paradigm eliminates the New European anthropocentrism, striking the consequences of which the person of the late Modern era feels. We are talking about environmental and anthropological crises that occur in the space of the Earth in the coordinates of technological culture.","PeriodicalId":30651,"journal":{"name":"ScienceRise","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46653690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}