bluuebunny/crossref_metadata_2025 huggingface dataset:
Aerodynamic problems on providing fire safety in subway
Authors: Gryaznova S. A. , Khvorost N. V.
Published: May 2023

Analysis of the emergency operation modes of tunnel ventilation systems used in subways has shown that these modes do not provide the steady gas-air flows in case of fire in the rolling stock and its stop in the tunnel; and there is no methodological support for calculations of stability of gas-air flows in tunnel fires. The existing technology for assessing the stability of ventilation flows applied in coal mines and road tunnels can not account for the peculiarities of fires in subways.
Structure formation in modified concretes
Authors: Kovalenko V. V.
Published: May 2023

We studied the stages of structure formation in modified concretes, the impact of technological peculiarities of production on the morphology of the structural components of cement crystal hydrate, are shown ways to develop new formulations of concrete with improved physical and mechanical characteristics.
Principles of determining the operation efficiency for suburban passenger trains in the set direction of traffic
Authors: Barash Yu. S. , Charkina T. Yu. , Melyantsova Yu. P. , Karas’ E. A.
Published: May 2023

The work is devoted to development of principles of determination of of operation efficiency of concrete group of suburban passenger trains in the set direction of traffic taking into account an unrecorded passenger turnover from incomplete payment of expenses for transportation of preferential categories of citizens by city administrations and some Ministries.
A comprehensive review of railway reform in Ukraine
Authors: Gritsenko N. V.
Published: May 2023

At present the reform of railway transport of Ukraine is one of important issues in the state. This paper examined trends in the way of reform of rail transport in recent years. The major stages of reform, which were adopted on legislative changes, are considered.
Mechanisms ensuring the sustainable development: problems and tasks
Authors: Elagin Yu. V.
Published: May 2023

A world economy ran into the problem of limit nature of practically all types of resources that results lately not only in the slump of the economy growing but also to the origin of global ecological and social problems. One of the most perspective ways of decision of these problems, i.e. the conception of "sustainable development" is considered. However, the economy of Ukraine develops mostly without application of principles of sustainable development and balancing the economic interests with the ecological and social principles. In the article the basic problems, reasons of their origin and fundamental tasks of sustainable development of Ukrainian economy are conditioned.
Transition to a model of high efficient national economy – a real way for solving economical problems in a state
Authors: Pshinko O. M. , Myamlin V. V. , Myamlin S. V.
Published: May 2023

Some particular basics of fundamentally new economic management model based upon "The theory of high efficient national economy" are shown. The model is non-inflationary and anti-crisis. As a matter of fact, the model has clear social purpose but at the same time it includes market relations and private property on production means. The acceptance by national economy of the proposed model in the first several years will allow increasing the GDP by several times.
Main stages in the development of systems of accounting expenses
Authors: Snachov N. P. , Korchakovskaya M. V. , Lomtieva I. N.
Published: May 2023

The importances of the historical cost indicate a memo public reporting and cost accounting of primitive society. Knowledge of the costs originates from the theory of value. Foundations of modern vision expenses were laid out in the XIX th century. Increasing needs of production were the impetus for the subsequent study of the costs. Costs are subject to control and measure the impact of economic activities of enterprises.
Modern marketing instruments of freight transportation in the market conditions in Ukraine
Authors: Radionova N. V. , Kobets’ O. I.
Published: May 2023

The article considers issues on searching the methods of using marketing instruments for solving the railway transport development problems and functioning this branch in the market conditions.
Forms of e-commerce and its place in the system of digital economy
Authors: Shemet A. D.
Published: May 2023

The article deals with main forms of e-commerce and its place in the digital economy, gives the characteristic of each. An analysis of research scientists on this issue and proposed the general scheme of the relationship of these forms. The structure of the digital economy and e-commerce site is determined by its composition.
To the issue of forecasting price dynamics in the property valuation
Authors: Gnennyi O. N.
Published: May 2023

The problems of short-, medium- and long-term forecasting price dynamics are considered. The improvement of short-term forecasting techniques based on exponential smoothing is proposed. A modified autoregressive model of the first-order differences for the medium-term forecasting is developed. A method of constructing the approximating function of the first-order differences as a linear combination of trigonometric functions, which can be used for long-term forecasting, is proposed.
Comparative analysis of modulation and demodulation methods of the control signals of rail line
Authors: Goncharov K. V.
Published: May 2023

Introduction: One of the ways of increasing the noise stability rail circuit is the use more informative waveform of control signal. Use in rail circuit modulated signals gives several informative selective traits in relatively narrow spectrum. The study of features of various modulation and demodulation methods with considering operating conditions of rail circuits is urgent. Purpose: the search for more informative forms of rail line control signal, the search for improved methods of signal processing of control current. Methods: For carrying out researches the method of signals decomposition in Fourier series and the simulation with the method of statistical tests have been  sed. Results: Spectrum of frequency shift signal is wider than the spectrum of amplitude shift and phase shift signals by an amount equal to twice the frequency deviation. The research of correlation coherent and incoherent reception methods of rail line control signal has been carried out. In this case, we used the following models of interferences: white Gaussian noise, random pulse sequence and sinusoidal interference. It has been found that the transition from amplitude to frequency shift keying reduces signal/noise ratio by 2...4 dB, depending from the signal level and the type of noise. Losing amplitude shift keying receiver compared with the phase shift keying receiver is 5...6 dB. Conclusions: The use of more advanced methods of modulation and demodulation improves noise stability of rail circuit. When using correlation methods reception phase shift keying provides the best noise stability, and amplitude – the worst.
The investigation of reverse traction current influence on tone track circuit modes
Authors: Scheka V. I. , Romancev I. O. , Jaschuk E. I.
Published: May 2023

Introduction: With the introduction of high-speed traffic there is an increased consumption of traction current by new types of rolling stock. This issue is important, as high levels of traction currents can have not only prevents, but also a dangerous impact on the equipment of railway automation devices. It is necessary to investigate the propagation of traction currents and potentials along the rails. Objective: Investigate the propagation of traction currents and potentials along the rails, the determination of critical currents, which not executed tone track circuits modes. Methods: In order to investigate the mathematical model, and the method of calculation tone track circuits modes was used. Results: By means of mathematical model, which includes being several rolling-stocks at the feeder zone, different rail resistance and isolation, the diagrams of currents and potentials propagations for DC and AC electric traction have been obtained. A comparative analysis of the experimental data and the results of the investigation has been realized. Based on received levels of reverse traction current their influence on track circuit modes has been investigated. Conclusions: The reverse traction current level near the substation and rolling-stock can be more than 600A. Great reverse traction current levels have an influence on tonal track circuit functioning, namely normal and shunt modes. When the traction current arrives 200 A there is a reduction criteria of tonal track circuits.
Use of a hydraulic brake as a source of thermal energy for the railway rolling stock
Authors: Gabrinets V. A.
Published: May 2023

Introduction: In this paper the braking issues of passenger trains which have a great speed and frequent stops are examines.  Problem statement: These processes are  ехpensive and have big energy losses.  The proposed solution to the problem: The kinetic energy of braking prosses propose to turn into thermal energy of heating fluid. For this purpose special hydraulic brake is proposed. The brake is connected with the wheel carriage pairs. The process is based on the energy dissipation in liqid when the disks with spikes rotate in it. Because the real liquid has friction and viscosity, it will be heat up, when the mechanical parts of the hydraulic  brake are moved in it. The design, operating principle and characteristics of the hydraulic brake are proposed. Transmission of kinetic energy of carriage motion to brake system executed by mechanical clutches. It  connected with the wheel pair and transmitting the energy the wheels rotation to hydraulic brake discs. The cylindrical rods are installed on the discs. Rods location fits the profile of the curved centrifugal pump vanes. As result, the fluid heatind prosess by rotatinge discs with rods take place also at the same time with the liquid pumping through the inner volume of brake system.Conclusions: Affordable passenger carriage braking dynamic is achieved by varying the size and number of rods. The heated liquid may be subsequently used for household needs and for heating the passenger carriage.
The research of methods for decreasing ingress of dust into atmospheric air during bulk material sintering
Authors: Shishackiy A. G. , Picyk J. V.
Published: May 2023

The analysis of aggloburden balling process and procedure of bulk materials adhesion was performed in this article. The laboratory bench for definition of adhesive force of bulk material breaking was developed and the research of suspended materials concentration of sintering gas throwing into atmospheric air during aggloburden sintering was performed. The decreasing of dust concentration as a result of aggloburden treatment with solutions of surfactant species was disclosed and its optimal consumption was determined.
Determination of heat transfer coefficient with vapor condensation inside the tubes diesel’s radiator sections
Authors: Sklifus Y. K. , Mogila V. I.
Published: May 2023

The article presents the calculation of heat transfer coefficient during condensation of steam, the mathematical model of temperature distribution in the gas and liquid phases of the coolant and the model of the formation of the condensate film on the walls of the tubes.
Choice a criteria for estimating the electromagnetic compatibility of tractive converters of perspective electric locomotive
Authors: Bondarenko Yu. S.
Published: May 2023

The article is devoted to the justification and the choice among existing criteria for determining the electromagnetic compatibility of high-frequency static converter, which is part of the modern electric rolling stock systems, with the systems of electric railways.
Change of form of sliding contacts in the process of exploitation of electric city transport
Authors: Koval V. A.
Published: May 2023

The in the total conducted theoretical researches a model for description of change of form of sliding contacts in the process of exploitation of electric city transport is got, as a system of differential equalizations for definite initial conditions. Deciding this system, taking into account geometry of the initial state of insertion of current receiver, it is possible to get relocation bias by which it is possible to define the well-educated section of insertion of current receiver at the proper run of electric city transport.
The signs of availability of exchange power in electric traction circuits of the direct current system
Authors: Kostin N. A. , Sheikina O. H.
Published: May 2023

Analytical expression has been evaluated and instantaneous reactive power as a sign of exchange electrical energetic processes in the system of electric traction of direct current have been calculated.
Reduced operating costs by train traffic optimization
Authors: Logvinova N. A. , Bosiy D. O. , Polyah O. M.
Published: May 2023

The paper conducted research to reduce the cost of electricity for traction power in the wholesale electricity market. Our calculations show that the previously known criteria for evaluating energy consumption in the market conditions are irrelevant.
Mode of the short circuit in the direct current electric traction network with different feed charts of fyder area
Authors: Mihalichenko P. Ye.
Published: May 2023

In the article the results of mathematical design of the system of electric traction of direct current are represented in the mode of short circuit and different feed charts of fyder area: two-sided; one-sided. Comparison of transitional electric sizes which characterize electromagnetic processes during these malfunctions is analysed and executed.
Theoretical aspects and methods of the parameters identification of the electric traction system devices. The instantaneous powers method; series connection of elements
Authors: Mishchenko T. M.
Published: May 2023

Introduction: By means of the mathematical or computer (imitating) modeling the emergency, especially stochastic, transient electromagnetic and / or electro energetic processes in the electric traction system of the alternating current should be investigated. It allows expanding the research opportunities, as well as simplifying and reducing the actual testing, because it permits the wide variation of values and parameters reality of the elements of electric power circuits in the traction system without considerable material costs. Purpose: For this purpose the mathematical model of the nonlinear dynamical system "traction substation – electric traction network – electric rolling stock» as a passive two-terminal network with the given input voltage and input current is proposed. Task: The identification problem of the device under study, therefore the two-terminal network, is the determination electrical parameters (active resistance to inductance and capacity) of the passive elements, which substitute the two-terminal network. The scheme of its substitution looks like the series connection of passive elements.  Methodology:  The method of solving this problem for the passive two-terminal network in the traction mode with alternating, nonsinusoidal, deterministic periodic input voltage and input current is proposed. The calculations are executed for the electric locomotives DS3 and 2ES5K. Results: The results for the parameters can be applied in the further calculations of the more complex electric traction systems of the alternating current.
Statistics and probability analysis of the voltage on the pantograph of dc electric locomotive in the recuperation mode
Authors: Nikitenko A. V. , Liashuk V. M.
Published: May 2023

The statistical analysis and probability characteristics of voltage random variation on the pantograph of DC electric locomotive in the recuperation mode are presented in the article.
Analysis of influence of change of office hours on degree of heating of isolation of puttee of anchor of electric motor of piston compressor
Authors: Ustimenko D. V. , Krasnov R. V. , Mazur A. V.
Published: May 2023

The article is devoted the question of research of factors which influence on changing of the mode of operations of electric motor of compressor, which in same queue influence on the degree of heating of isolation of winding of anchor ED.
Based on the comparison of options for traction and energy defined conditions accelerated the introduction of electric hyndai rotem Kumy–Dnepropetrovsk
Authors: Kurgan M. B. , Khmelevs’ka N. P. , Toropov B. I.
Published: May 2023

In a comparison of options for the golf-defined prerequisites for the introduction of the energy of accelerated motion of electric Hyndai Rotem.
Rationale for the recommendation to improve the carrying capacity access roads PC «Pavlogradugol»
Authors: Shiyrin L. N. , Chernyshova O. S. , Kovalev V. V. , Bilych I. V. , Harlan V. I.
Published: May 2023

The results of studies on the дdevelopment of recommendations to improve the capacity and carrying capacity of the access road PC «Pavlogradugol».
About of influence level strength rail wheels on the formation defects
Authors: Vakulenko L. I. , Proiydak S. V. , Nadejdin Y. L.
Published: May 2023

The observed questions of estimate mechanism formation damage behavior is considered to be result of a directional variation in of strengthened and heat metal on the surface roll wheels.
Prospects of functional development of workstation of DGP
Authors: Ovcharenko S. M.
Published: May 2023

In the article current functional possibilities of workstation of DGP, his use is considered on the railways of Ukraine. Directions of further improvement of software are also offered for controller management with the aim of providing of timely delivery of loads.
Use of information system data of jet crushing acoustic monitoring for the process management
Authors: Pryadko N. S. , Bulanaya T. M.
Published: May 2023

The graphic interpretation of amplitude and frequency of acoustic signals of loose material jet grinding process are resulted. Criteria of process management is determined on the basis of the acoustic monitoring data of jet mill acting.
Evaluation laterally loaded liquid of inhomogeneous trains at various mode of braking
Authors: Romanyuk Y. N.
Published: May 2023

Problem statement. By means of mathematical modelling it is investigated longitudinal forces of non-uniform bulk trains at various ways of braking. Various schemes of formation of the bulk trains, consisting of four-axised and eight-axised tanks with various level of incomplete filling of  transported liquid are considered. It is estimated the influence of level of filling of a copper of the tank by  liquid on longitudinal forces of trains at braking. For the decision of the given problem the trains made from 30 four-axised and 30 eight-axised  cars-tanks and one locomotive VL-8,  located in the head of a train were considered. For the estimation of longitudinal forces emergency and full service braking at speeds of movement 30 km/h and 60 km/h on a horizontal site of a way were considered. At mathematical modelling it was supposed that  tanks were filled by black oil in density ρ =0,99 t/m 3. Various variants of removal of the level   free surface of  liquid from the top internal surface of a copper of the tank were considered. The incomplete filling was accepted equal 0,4; 0,8; 1,2 metres. Scientific results. As a result of calculations diagrammes of distribution of the maximum longitudinal forces along the length of a train and brake ways for various schemes of formation and different level of  incomplete filling of  transported liquid have been received. Various braking of preliminary stretched and compressed trains are considered. Conclusions. The received results show that in need of driving the bulk non-uniform as cars-tanks (4- axised and 8- axised) trains their formation should be made with installation of eight-axised tanks in the first half of the structure.
Research of physical and chemical characteristics of large fillers for production of ferro-concrete sleepers
Authors: Rybkin V. V. , Kovalenko V. V. , Zayats Yu. L. , Pshinko P. O. , Lisnyak V. P. , Yaryshkina L. O. , Vasilyeva S. V. , Kovalenko S. V.
Published: May 2023

The paper is dealt with an analysis of the reactivity of large fillers and their fractional composition for the production of ferro-concrete sleepers.
Logistiks methods of resource management at repairs of the rolling-stock at the industrial enterprises
Authors: Kapitca M. I. , Gnenny N. V. , Pinchyk E. P. , Privalova L. V.
Published: May 2023

In clause the methodical approaches to logistics methods of resource management of the industrial enterprises are considered at performance of repairs  of the rolling-stock. The general(common) algorithm of increase of capacity of system of repair is offered on the basis of a choice of a rational sequence of realization of methods of management of its(her) resources.
Regional strategy and its features in the conditions of market economy
Authors: Myroshnyk N. V.
Published: May 2023

The term “region” is defined. It is studied that in the conditions of modern market economy for an effective management of financial resources it is necessary providing the enterprise activities with optimal amount of these resources, their rational use, maximization of income and providing the appreciation of market enterprise value. In such conditions the issues of improvement of management of production processes, the effective use of financial, labor, and material resources become topical. The transition to the modern market economy caused the changes of all the economic system and, for the first, regional enterprises. The terms of managing the economy suffered transformations, which found an expression in the changes of ownership patterns, the terms of government control, and the tax system. The non-public sector of economy appeared as a result of reforms, modern banking system, markets of commodities, services, capital. It gives an opportunity for the reproduction on an expanded scale, the increase of enterprise profits, and the income of its proprietors. One is able to achieve this goal only under the optimal management of finances. In the modern conditions of managing the economy the control system is to be migrated to regions differing one to another in national, historical, geographical, economic and other peculiarities. A structural policy that must foresee the transition of state economy to a new resource-provided, hi-tech and economically safe model of operation is realized in Ukraine. Establishing in the country of free economic zones, where the favourable custom, currency-financial, tax and other conditions of economic activity are in force, is very promising. The territorial social-and-economic structure of Ukraine is based upon the principles of unity and integral state power, an appropriate balance of socio-economic development of separate territories taking into account historical and cultural traditions, demographic and ecological features. In a regional challenge, there is a task: what is the aid addressee – the depressive region or its population? If the former then investments are necessary, the latter – promoting the population migration to more solvent regions is better. But even the most backward region is a motherland of part of population and that is why it deserves to get this aid.
Organizational-economic principles of reforming of the railway transportation
Authors: Mishchenko M. I.
Published: May 2023

Results of vertical division of railways of the countries of the European community are investigated. The received effects and factors which influence increase of competitiveness and efficiency of activity of a railway transportation with the account of the current legislation of the European community are analyzed.
Optimization of structure of sources of enterprise financial resources in Ukraine
Authors: Petyk M. I.
Published: May 2023

The article reviews the peculiarities of the financial resources of the home industries. The defining characteristic here is not quantitative but qualitative indicators that reflect the availability of financial resources of the business entities. To solve this problem, the relations between the main characteristics of the financial resources of the entity and its financial condition indicators as criteria for financial security were investigated. It was found that the value of financial resources and their structure do not have explicit dependence. Under the present circumstances, regardless of the existing capital structure, a business entity is unable to attract additional financial resources, despite their cost, and vice versa – opportunity to borrow on the capital market new resources at market value does not depend on the value of the shoulder leverage of the business unit. The limiting factors here are the imperfection of the home competitive environment and the psychological motives of the market participants. There is also a conflict situation when due to the reduction of the profitability, the business entities tend to borrow at higher interest rates. The reason for this is primarily in the needs of the production sector, namely the need for ongoing business proper funding, especially in the crisis situations that affects the financial and industrial status. Ensuring an adequate logistics of the business entity (the degree of amortization of the equipment) requires an appropriate level of funding, but does not affect its structure. Research of the resources of the business entities in Ukraine’s economy showed that their ability to attract cheap long-term financial resources for today is quite limited.
Effect of money turnover rate on efficiency of national economy
Authors: Pshinko O. M. , Myamlin V. V. , Myamlin S. V.
Published: May 2023

Some provisions of an entirely new model of economic management having as its base “The Theory of High Efficient National Economy” are under consideration. The separate functions of money in the modern world are critically examined, and the contradictions among them are highlighted. It is demonstrated on how does the money turnover rate influences on the national economy efficiency. Ways to increase the rate of money turnover are shown. An absolutely new scheme of functioning the state monetary system is suggested.
Method of estimation of competitive position of operator of port container terminal on the basis of multidimentional groupings
Authors: Savelyeva I. V.
Published: May 2023

In developing the strategy for development of port container terminal in the competitive environment, one of the main problems is the method of estimating the competitive position of each port (separate terminals) and ranking them on a number of key indicators that characterize the dynamics of their development. To solve this problem it is necessary to develop scientifically sound and practicable methodology to assess the effectiveness of the provisions of industrial and financial activity of a single terminal.
Estimation of application efficiency of mechanisms of state-private partnership in realization of municipal level projects in the sphere of water supply and sewage
Authors: Shevchenko E. Yu.
Published: May 2023

In the article the author suggests the approaches to estimation of application efficiency of mechanisms of stateprivate partnership in realization of municipal level projects in the sphere of water supply and sewage; some management actions on improving the application efficiency of the mechanism suggested are determined.
Współczesna recepcja walki klas , czyli w jakim stopniu marksizm wpłynął na koncepcje XX-wieczne i czy pozostał aktualny do dzisiaj?
Authors:   Uniwersytet im. Adama Mickiewicza w Poznaniu, Pazdej Mateusz
Published: May 2023

The aim of this paper is to compare the Karl Marx’s theory of classes fighting to influenced by it a neo-marxist conception of Ralf Dahrendorf concerning conflicts and arguing with a theory of social system elaborated by Talcott Parsons. Such an arrangement mostly enables answering the question in what extension the conceptions of a XIXth – century philosopher and an economist remain up-to date in the following century. In the second part of deductions the evolution of that term will be presented in a form of showing as examples the followers of the mentioned thinkers, because contemporarily the term of classes fighting is used not only by Marxists, but also by the members of feministic movements such as Pierre Bourdieu and representatives of organizations which fight for a protection of the environment, among others Murray Bookchin. Such different points of view will be shown and compared in this paper, which will lead to answering the question in what extension the thoughts of Karl Marx influence XXth-century philosophy and if they are still up-to-date.
Эффективность и качество демократии в сравнительной политологии: дефинитивные и концептуальные параметры анализа
Authors:   Narodowy Uniwersytet Iwana Franki we Lwowie, Lytvyn Vitaliy S.
Published: May 2023

The article is dedicated to analyzing the historiography and conceptualization of the phenomenon of efficiency and quality of democracy. The author of the research outlined the definitive and conceptual parameters of comparative analysis of efficiency and quality of democracy, argued that different political regimes are more or less democratic. The article highlights various approaches, theoretical and empirical features of studying efficiency and quality of democracy, represents the most systemic/holistic indicators and methods of operationalization of democracy quality and efficiency. On this basis, the author actualized a unified approach to the analysis and conceptualization of quality and efficiency of democracy and argued that quality and efficiency of democracy is expedient to be mentioned not in a holistic continuum of political regimes, but when a certain state is actually democratic. As a result, the research confirmed that democracy is a multi-piece category and is able to expand its efficiency and quality.
Moralność jako kluczowa operacja systemowa w teorii Niklasa Luhmanna
Authors:   Uniwersytet Kazimierza Wielkiego w Bydgoszczy, Wieczorek-Orlikowska Joanna
Published: May 2023

Morality in the systems theory of Niklas Luhmann has a special place as a formula that enables communication, in other words functioning of the mechanism of the self-processing. Over the centuries this role in the system has evolved and today morality faces utterly new challenges. Will she still fulfill her commitments in the face of crisis of current values? Do we need new standards of behaviour in an era of progressive complexity?
The weaknesses of majority voting systems. A voice in the discussion on the proposed changes in the Polish voting system.
Authors:   Uniwersytet Kazimierza Wielkiego w Bydgoszczy, Kapsa Izabela
Published: May 2023

The proposal to introduce a majority voting system has become one of the most crucial elements of rivalry in the Polish presidential campaign of 2015. It was accompanied by an accusation that the proportional voting system seemingly affects the political life in Poland, making it more and more party-dependant. The aim of the present article is to refute the above accusation and present the weaknesses of the majority voting systems, based on British political system. Comparative, historical and analytical methods will be used in order to substantiate the thesis of the article, i.e. that political parties’ influence will not be reduced due to the introduction of the majority voting system. Moreover, the article will also discuss the reasons behind and consequences of using the proportional voting system in Poland, in the light of the so called “crisis of democracy”.
Iluzoryczne partnerstwo NATO–Rosja w okresie kryzysu i budowy mocarstwowości Federacji Rosyjskiej
Authors:   Uniwersytet Kazimierza Wielkiego w Bydgoszczy, Jureńczyk Łukasz
Published: May 2023

The aim of the article is to analyze the relationship between NATO and the Russian Federation. Deliberations are conducted within the institutional and historical-problematic approach. The author characterizes the institutional framework for cooperation between NATO and Russia, as well as discusses the factors which are barriers to this cooperation. Therefore focuses on the most important issues of common interest of partners, such as the problem of stabilizing the security environment, the fight against international terrorism, the use of the armed forces in foreign policy, the process of NATO enlargement and the maintaining of strategic balance between parties. The Author is skeptical about the possibility of establishing a lasting partnership between NATO and Russia. He indicates the difference between the period of the 90s of the twentieth century, when was evident weakness and submission of Russia to NATO and the beginning of the twenty-first century, when is an attempt of rebuilding Russia’s superpower in a manner unacceptable by NATO.
The importance of economic diplomacy in the era of globalization (the case of China)
Authors:   Uniwersytet Kazimierza Wielkiego w Bydgoszczy, Szatlach Maria Ewa
Published: May 2023

Together with the acceleration of globalization processes, power in international relations has moved from the political and military space to the economic one. Today, true power means ability and capacity to integrate with the global economy. Therefore, economic diplomacy, which is not a new phenomenon, became one of the most important elements of foreign policy of all countries. The aim of the article is to present the importance of economic diplomacy in foreign policy in the era of globalization with a particular emphasis on the economic activity of China.
Миграционные процессы в тропической Африке
Authors:   Uniwersytet im. N.I. Łobaczewskiego w Niżnym Nowogrodzie (Rosja), Smirnova Olga A.
Published: May 2023

The peculiarities of migration flows in Sub-Saharan Africa, the appearance of conflicts and the process of their arrangement are described in the article. The author examines the main migration trends, reasons, directions, specific features of migration in this region, attempts to show the intercommunication between migration and conflict on the example of the region and determines the degree of mutual influence. The author focuses on the fact that Sub-Saharan Africa is a complex structural system consisting of politically independent elements that frequently interact according to the orderly process. The elements of the system such as states, IGOs, NGOs and politicians cooperate with each other in public relations, create its structure and strengthen the system’s integrity.
Próba wyjaśnienia pojęcia i istoty wojen hybrydowych
Authors:   Uniwersytet Kazimierza Wielkiego w Bydgoszczy, Grabowska Katarzyna
Published: May 2023

Russian-Ukrainian conflict has contributed to the spread in the media and politics the term hybrid war. The purpose of this article is to encourage researchers to reflect on the pertinence of the use of the term and on the need to clarify it. The most important question highlighted in the course of analysis, lean toward determining of characteristics that would allow state clearly what kind of conflicts, using what techniques and from which point, you may to be called hybrid war
Экологическая неоконвергенция : от теории к практике
Authors:   Ukraińska Akademia Nauk, Yurievna Perga Tatiana
Published: May 2023

Impending environmental disaster due to increased human and industrial environmental pressures force states to bring together their positions and policies to protect it, which leads to the development of environmental convergence. This mechanism is the basis for the formation of national and global environmental policy. It is essential to study the fundamental trends, directions and forms in terms of ped. cting global development in the first half of the twenty-first century. Based on the analysis of ecological theory of convergence and the latest trends of international cooperation, concludes a new phase of convergence of states, which is inherent old and gain new forms of international cooperation. We introduce the concept of neo-convergence, as a new form of states rapprochement. The benefits for different groups of countries in participating in the environmental convergence, their progress towards convergence and policies in the environmental field (2004 – 2014) and main problems of evaluation systems that process are shown and analysed.
Major issues of youth policy implementation in Kazakhstan
Authors:   Kazachski Narodowy Uniwersytet im. Al-Farabi, Maigul Mekebaeva , Seylbek Mussatayev ,   Kazachski Narodowy Uniwersytet im. Al-Farabi
Published: May 2023

In this article the authors considered problems of the realization of youth policy in the Republic of Kazakhstan. There are some factors which objectively complicate the realization of youth policy in Kazakhstan: the lack of social-political ideology which could be able to play the part similar to the role of communist ideology in the USSR or liberal-democratic one in the USA, the domination of ethnic identity over the civil one; the system of values, which unites community, must not only be a subject for general consensus in the society but gather the youth together emotionally, appealing to an irrational beginning in individual and massive psychology; the problem of social growth of the youth. Mostly, the youth in Kazakhstan can be divided into two groups: socially safe and socially unsafe. In the article analysis methods and content analysis were used as well as the results of sociologic researches.
Analiza i ocena osiągnięć gospodarczych Polski w latach 1989 – 2015
Authors:   Uniwersytet Kazimierza Wielkiego w Bydgoszczy, Nowakowski Emil
Published: May 2023

The article presents a brief overview of the balance of the effects of the economic transformation in Poland, in the last 25 years. The text of the article consists of three parts. Firstly, a brief description of the circumstances of the legislation constituting the foundation for the construction of a capitalist economy in Poland. The second part is to present Polish macroeconomic indicators compared to selected other countries. The third part is the presentation of data on the impact of economic development on the Polish living standards of the country. On the basis of this analysis conclusions were drawn. They concern the Polish economic growth compared to other post-socialist countries, and the material situation of the Polish population
Kultura masowa – aktywni konsumenci, bierni obywatele? Implikacje w sferze publicznej
Authors:   Doktorantka w Instytucie Nauk Politycznych Uniwersytetu Kazimierza Wielkiego w Bydgoszczy, Wenderlich Paulina
Published: May 2023

The research problem brought up by the author of the present article is the activity vs passivity of citizens of mass culture in the widely understood context. The technological progress, globalizational processes, the unification and creation of needs, the appearance of new media, a bias in favour of success and prestige, the broadely defineded consumerism are only a few of the factors which contribute to break off the relationships with space and time. They cause, inter alia, the standardization of transmissions and distorting reality. These phenomena are an inherent part of the mass culture, its positive and negative implications in the public sphere.
Compound Semiconductors – A Plethora of Possibilities for Future Electronic & Photonic Devices
Authors: Ganguly Anushka , Gupta Mahul , Anis Mohammed Farhan , Singh Sneha
Published: May 2023

The advent of integrated circuits (IC), primarily made from silicon (Si), revolutionised the electronics industry in the past century. However, with the increasing complexity of applications over the years in terms of higher speed, smaller size, low noise, high power handling capacities
coupled with lower cost, triggered a wider use of compound semiconductors in some specific applications. The properties of these compound semiconductors can be modulated by changing the combination of constituent elements, thereby altering the bandgap suitable for the chosen application. Over
the years, many elements from groups III & V and II & VI of the periodic table have been combined to create newer compositions with unique properties suitable for various critical applications. Nowadays, even IV-IV materials like SiGe, etc. are also explored. The higher internet speeds,
backed up by a very strong fibre optic network, higher computing speeds and many other related applications have also triggered the development of photonic devices in addition to various electronic devices. Various compound semiconductor materials are found to exhibit very good performance
in terms of reliability, size, production scalability, speed and many other pertinent issues as required. With the recent pace of development, future devices will require further enhancements. The wide range of applications required will also present greater complex challenges. So, the need
for finding newer compound semiconductor materials with wider bandgaps and specialised characteristics is on the rise. In the present work, the authors have made an attempt to review the applications of compound semiconductor-based devices in the fields of energy, defense, biomedical (including
wearable sensors) and optoelectronic applications. It is estimated that newer materials developed through research in the coming days will significantly improve the quality of life for the entire human civilization
Construct validity and reliability of the Brazilian version of the Maternal-Fetal Attachment Scale (MFAS): a proposal for a 12-item short version
Authors: Baldisserotto Márcia Leonardi , Theme Filha Mariza Miranda
Published: May 2023

This study aimed to update the assessment of construct validity and reliability of the Brazilian version of the Maternal-Fetal Attachment Scale (MFAS). This is part of a cohort study, in which the scale was applied to 415 pregnant women. The factor structure was verified via structural equation models. Comparative fit index (CFI), Tucker-Lewis index (TLI), and root mean square error of approximation (RMSEA) were used to verify the model fit. Additionally, to test the validity of the MFAS based on external variables, generalized linear model was performed to test the association between obstetric variables, social support, and symptoms of depression with the MFAS. The reliability was analyzed via the composite reliability coefficient (CR). The 12-item short version of the Brazilian MFAS showed adequate parameters of construct validity (CFI = 0.969, TLI = 0.960 and RMSEA = 0.032, 90%CI: 0.012-0.048) and is composed of three factors (“empathy and care”, “role-taking”, and “interaction with the fetus”) containing 12 items. The total scores of the MFAS were positively correlated with social support (p-value < 0.001) and negatively correlated with depressive symptoms (p-value = 0.007). Moreover, women who live with a partner (p-value = 0.026) and had intended pregnancies (p-value < 0.001) presented a better bond with the fetus. Regarding reliability, factors 1 and 2 showed adequate values (CR = 0.72 and CR = 0.82, respectively) and factor 3 regular value (CR = 0.63). This 12-item short version of the Brazilian MFAS may be a reliable and valid instrument for scientific studies and clinical assistance in Brazil.
Risco de resultado falso positivo no rastreamento mamográfico do Brasil
Authors: Santos Renata Oliveira Maciel dos , Assis Mônica de , Dias Maria Beatriz Kneipp , Tomazelli Jeane Glaucia
Published: May 2023

Resultados falsos positivos na mamografia de rastreamento são comuns a essa intervenção e trazem ônus para as mulheres e o sistema de saúde. O objetivo deste estudo foi estimar o risco de resultado falso positivo no rastreamento mamográfico brasileiro com base em dados de sistemas de informação do Sistema Único de Saúde (SUS). Foi realizado estudo de coorte histórica de mulheres de 40-69 anos, que realizaram mamografia de rastreamento e exame histopatológico de mama no SUS, nos anos de 2017 a 2019. A taxa de resultados falsos positivos foi estimada a partir da prevalência de resultados BI-RADS alterados na mamografia de rastreamento e da proporção de resultados benignos no exame histopatológico de mama. Das 10.671 mulheres com exame histopatológico no SUS, 46,2% apresentaram resultado benigno, sendo essa proporção significativamente maior em mulheres de 40-49 anos comparada à de mulheres de 50-69 anos. A estimativa de resultados falsos positivos foi de 8,18 casos por 100 mulheres na faixa etária de 40-49 anos, e de 6,06 por 100 mulheres na faixa de 50-69 anos. Essas informações são úteis aos gestores na avaliação de programas de rastreamento do câncer de mama, assim como aos profissionais de saúde, para que orientem a mulher sobre as implicações do rastreamento mamográfico.
The policy analysis matrix with profit-efficient data: evaluating the profitability of lemon cultivation in Turkey
Authors: Subaşı Osman Sedat
Published: May 2023

ABSTRACT: In this study, the policy analysis matrix (PAM) and data envelopment analysis (DEA) approaches were used to assess lemon producers’ productivity in Mersin, Turkey, as well as the international competitiveness of lemon cultivation within the scope of its production plan. According to the findings, most enterprises are inefficient, and the profitability of lemons improved from 2863.5 USD ha-1 to 6606.0 USD ha-1 with special prices within the framework of profit-maximising production plans. Regarding social prices, an increment from 3500.8 USD ha-1 to 8071.5 USD ha-1 was proposed to create a more sustainable production plan. To retain competitiveness in the Turkish lemon trade, it has been established that enterprises should transition to a more efficient production structure. For this reason, it has been concluded that inefficiencies in using inputs should be eliminated, and the dissemination of technology and advanced applications will make producers more competitive.
Multidimensional performance assessment of a sample of beef cattle ranches in the Pantanal from a data envelopment analysis perspective
Authors: Gomes Eliane Gonçalves , Santos Sandra Aparecida , Paula Emanuel Salgado de , Nogueira Marcelo Augusto , Oliveira Márcia Divina de , Salis Suzana Maria , Soriano Balbina Maria Araújo , Tomas Walfrido Moraes
Published: May 2023

ABSTRACT: Beef cattle ranching is the main economic activity in the Brazilian Pantanal, undertaken in an extensive manner, mostly in natural environments and dynamic in space and time. The ongoing monitoring, assessment, and performance improvement are key aspects of the search for sustainable use of natural resources in beef cattle ranches, as these ranches are the management units in the Pantanal. In this paper we proposed a data envelopment analysis (DEA) approach to assess the performance of fourteen beef cattle ranches in the Pantanal wetland as a case study, considering financial, productive, and environmental sustainability dimensions. We modeled each dimension separately and calculated an overall performance score. We also fit fractional regression models to study the influence of potential covariates on the performance scores. The methodological approach proposed here proved to be adequate for the case study, as the results are in line with the expectations of decision-makers regarding the performance of the ranches. The overall performance analysis was influenced by the proportion of higher quality native forage resources, which depends on the dynamics and on the spatial-temporal variation of the landscapes. Therefore, overall performance requires adaptive management of ranches based on diversity conservation, which benefits the multifunctionality of products and services.