bluuebunny/crossref_metadata_2025 huggingface dataset:
Development a mathematical model for the software security testing first stage
Authors: Semenov Serhii , Liqiang Zhang , Weiling Cao , Davydov Viacheslav
Published: July 2021

This paper reports an analysis of the software (SW) safety testing techniques, as well as the models and methods for identifying vulnerabilities. An issue has been revealed related to the reasoned selection of modeling approaches at different stages of the software safety testing process and the identification of its vulnerabilities, which reduces the accuracy of the modeling results obtained. Two steps in the process of identifying software vulnerabilities have been identified. A mathematical model has been built for the process of preparing security testing, which differs from the known ones by a theoretically sound choice of the moment-generating functions when describing transitions from state to state. In addition, the mathematical model takes into consideration the capabilities and risks of the source code verification phase for cryptographic and other ways to protect data. These features generally improve the accuracy of modeling results and reduce input uncertainty in the second phase of software safety testing. An advanced security compliance algorithm has been developed, with a distinctive feature of the selection of laws and distribution parameters that describe individual state-to-state transitions for individual branches of Graphical Evaluation and Review Technique networks (GERT-networks). A GERT-network has been developed to prepare for security testing. A GERT-network for the process of checking the source code for cryptographic and other data protection methods has been developed. A graphic-analytical GERT model for the first phase of software safety testing has been developed. The expressions reported in this paper could be used to devise preliminary recommendations and possible ways to improve the effectiveness of software safety testing algorithms
The dynamics of a resonance single-mass vibratory machine with a vibration exciter of targeted action that operates on the Sommerfeld effect
Authors: Filimonikhin Gennadiy , Pirogov Vladimir , Hodunko Maksim , Kisilov Ruslan , Mazhara Vitalii
Published: July 2021

This paper reports a study into the dynamics of a vibratory machine composed of a viscoelastically-fixed platform that can move vertically and two identical inertial vibration exciters. The vibration exciters' bodies rotate at the same angular velocities in opposite directions. The bodies host a single load in the form of a ball, roller, or pendulum. The loads' centers of mass can move relative to the bodies in a circle with a center on the axis of rotation. The loads' relative movements are hindered by the forces of viscous resistance.
It was established that a vibratory machine theoretically possesses the following:
– one to three oscillatory modes of movement under which loads get stuck at almost constant angular velocity and generate total unbalanced mass in the vertical direction only;
– a no-oscillation mode under which loads rotate synchronously with the bodies and generate total unbalanced mass in the horizontal direction only.
At the same time, only one oscillatory mode is resonant and exists at the above-the-resonance speeds of body rotation, lower than some characteristic speed.
At the bodies' rotation speeds:
‒ pre-resonant; there is a globally asymptotically stable (the only existing) mode of load jams;
‒ above-the-resonance, lower than the characteristic velocity; there are locally asymptotically stable regimes ‒ both the resonance mode of movement of a vibratory machine and a no-oscillations mode;
‒ exceeding the characteristic velocity: there is a globally asymptotically stable no-oscillations mode.
Computational experiments have confirmed the results of theoretical research. At the same time, it was additionally established that it would suffice, to enter a resonant mode of movement, to slowly accelerate the bodies of vibration exciters to the above-the-resonance speed, less than the characteristic speed.
The results reported here could be interesting both for the theory and practice of designing new vibratory machines
Designing a system that removes metallic inclusions from bulk raw materials on the belt conveyor
Authors: Zamikhovskіy Leonid , Levytskyi Ivan , Nykolaychuk Mykola
Published: July 2021

Modern industrial technologies require raw materials of high purity from suppliers, especially due to the possible presence of inclusions of heterogeneous metals in them. The existence of metallic inclusions of heterogeneous metals in the raw materials leads to equipment failure, a decrease in the quality of output products, and, consequently, large financial losses. Since the main method of transporting raw materials in the industry is still a conveyor belt, this imposes additional conditions to control and remove metallic inclusions. For various reasons, current methods for removing metallic inclusions in the conveyor belt do not fully meet the needs of modern production. The main issue related to existing removal systems is the lack of intelligent interaction between these systems and the absence of information exchange between systems that detect and remove metallic inclusions. An alternative method for removing metallic inclusions of heterogeneous metals from loose medium has been proposed, which implies the tandem operation of the system that detects metallic inclusions and the system that removes them. The tandem operation of the two systems makes it possible to exchange information about a detected metallic inclusion and, as a result, to more flexibly use tools for the removal of metallic inclusion depending on the size and location of the metallic inclusion relative to the conveyor belt axis. At the same time, the control unit of the removal system makes it possible to control the conveyor belt itself, which allows the removal of complex metallic inclusions using the reverse of the electric drive of the belt, as well as enables a control check of the fact of removal. The developed algorithm of the removal system was implemented in the programming environment TIA-Portal. The introduction of this removal system could reduce the number of metallic inclusions in raw materials by 15‒20 %; moreover, its application is not limited to only one sector of the national economy
Development of a mathematical model for the process of modernization of a melon cleaning machine
Authors: Kizatova Marzhan , Baikenov Alibek , Muslimov Nurzhan , Baigenzhinov Kadyrbek , Yessimova Zhazira
Published: July 2021

The paper is devoted to the problem of increasing the efficiency of melon processing under limited production automation. Measures for equipment modernization should be carried out in accordance with the operation rules of each individual unit. In production conditions, all equipment, without exception, undergoes this process, while the corresponding documentation is drawn up, confirming the implementation of modernization within a certain time frame.
In a competitive market environment, product quality is a causal factor for the sharp increase in risks for food industry enterprises. To produce quality and competitive products, you need equipment that helps to reduce costs. The disadvantages of most melon peeling designs are size instability in the thickness of the rind. The paper presents a solution to this drawback. This was achieved by changing the sharpening angle of the rind cutting knife.
Research has been carried out to study the texture properties of “Mirzachulskaya” and “Raduzhnaya” melons. And also experiments on melon peeling based on the planning matrix of mathematical modeling. Based on the experiments, a model of the peeling process was constructed.
The key factors to limit peeling waste were optimized. Calculations of the optimized parameters yielded the cutting knife sharpening angle of 40 degrees, a roller gap of 9 mm, as well as an average force applied of 1,375 N∙m. The data obtained can be used as a basis for the modernization of this machine for other melon varieties
Development of evolutionary search algorithms with binary choice relations when making decisions for pellet tubular heaters
Authors: Irodov Vyacheslav , Shaptala Maksym , Dudkin Kostiantyn , Shaptala Daria , Prokofieva Halyna
Published: July 2021

A study was carried out and the optimization process was carried out for one of the types of equipment for autonomous heat supply using renewable resources – a tubular pellet heater. The research is expedient, since there is no mathematical model of the unit operation for the pellet combustion unit, there is only a set of experimental results indicating the inconsistency of the criteria presented to it. As a result of the research, new algorithms have been obtained: firstly, an algorithm for selecting (multi-criteria optimization) the operating mode of the unit for burning pellets of tubular heaters, and secondly, algorithms for choosing, according to several criteria, the parameters of the heat exchange unit of a tubular heater with a screen. A set of algorithms for multicriteria optimization with binary selection ratios has been developed for tubular pellet heaters in full, including a pellet combustion unit and a heat exchange unit. Selection functions have been defined for a pellet combustion unit using dimensionless complexes based on experimental results. For a block of a tubular heat exchanger with a screen, a selection function is built taking into account the criteria of functioning and a mathematical model of the heater in the form of a system of nonlinear ordinary differential equations. The practical significance of the algorithm for selecting the operating mode for the pellet combustion unit lies in the possibility of obtaining the most preferable (optimal, taking into account many criteria) parameters in the entire range of permissible parameters, and not only among the experiments carried out. The practical significance of optimization algorithms for a heat exchange unit lies in the ability to select specific parameter values during design – the thermal power of the heater, air flow, the length of the tubular part and the screen, their diameters, taking into account several selection criteria.
Research in phytochemical composition and hypoglycemic activity screening of the dry extracts from bearberry leaves
Authors: Chaika Natalia , Mazen Matar , Koshovyi Oleh , Kravchenko Ganna , Goryacha Olga , Kireyev Igor , Kovalenko Sergiy , Darmograi Roman
Published: July 2021

Diabetes mellitus is a global medical and social issue. In the developed countries of the world, from 5 to 12% of the population are diagnosed with diabetes mellitus and, according to WHO prognosis, the level of this disease may increase to 30-35%. Type 2 diabetes is a disease that progresses over time, but the rational and systematic use of hypoglycemic synthetic drugs and phytopreparations can significantly delay the onset of insulin therapy. A promising source of BAS with a hypoglycemic effect is the raw material of plants of the Heather family, namely, bearberry leaves. However, on the Ukrainian market there are no domestic galenic and novo-galenic preparations based on biologically active substances of this raw material, which indicates the prospects for the development of new drugs, including those with hypoglycemic action.
The aim. The aim of the study was to study the phytochemical composition and to carry out a screening of the hypoglycemic activity of dry extracts from bearberry leaves modified with various amino acids to identify promising substances with hypoglycemic action.
Materials and methods. The objects of the study were 11 dry extracts from bearberry leaves, 10 of which were modified with various amino acids. The study of the phenolic compounds of the extracts was carried out by TLC, HPLC, and spectrophotometry. To assess the hypoglycemic activity of the extracts, two experiments were carried out - primary screening and oral glucose tolerance test.
Results. Using TLC and HPLC, in the extracts obtained arbutin, gallic acid, 5 flavonoids were identified, among which hyperoside was dominant, 4 hydroxycinnamic acids, among which chlorogenic and caffeic acids were dominant, and their content was established. In the extracts obtained, main groups of phenolic compounds were quantified using a spectrophotometric method. Dry extracts from bearberry leaves, modified with cysteine, arginine and glutamic acid, showed the strongest hypoglycemic activity.
Conclusions. The chemical composition of phenolic compounds and the hypoglycemic activity of dry extracts from bearberry leaves modified with 10 different amino acids were determined. The most promising substances turned out to be extracts modified with cysteine, arginine and glutamic acid; therefore, they are promising agents for the development of new drugs.
Synthesis and antimicrobial activity of s-substituted derivatives of 1,2,4-triazol-3-thiol
Authors: Karpun Yevhen , Polishchuk Nataliia
Published: July 2021

The aim of the work. 1,2,4-triazole derivatives possess a wide range of pharmacological activity, so they are used for the development of drugs and active pharmaceutical ingredients. Due to the reactivity of 1,2,4-triazoles there are many options for their further structural modification on different reaction centers. Therefore, the aim of the work was to obtain new S-substituted derivatives of 1,2,4-triazole-3-thiols, study physicochemical parameters of the substances synthesized, evaluate the antimicrobial activity of new S-derivatives of the 4-R1-5-((3-(pyridin-4-yl)-1H-1,2,4-triazol-5-yl)thio)methyl)-4H-1,2,4-triazole-3-thiol series, and study some regularities of the “structure – biological activity” relationship for the synthesized compounds as well.

Materials and methods. The subject of the study was new S-substituted 1,2,4-triazoles containing 2-oxopropan-1-yl and 2-aryl-2-oxoethan-1-yl substituents. The antimicrobial activity was studied by double serial dilutions on test cultures of Staphylococcus aureus (ATCC 25923), Escherichia coli (ATCC 25922), Pseudomonas aeruginosa (ATCC 27853), and Candida albicans (ATCC 885-653).

The results of the biological screening showed that at a concentration of 125 g/mL, all synthesized substances showed activity (MIC – in the range of 31.25 - 62.5 μg/mL, MBCK - in the range of 62.5–125 μg/mL) against strains of Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Candida albicans. Variation of substituents on the sulfur atom did not lead to a significant change in antimicrobial and antifungal activities among derivatives of 4-R1-5-((3-(pyridin-4-yl)-1H-1,2,4-triazole-5-yl) thio)methyl)-4H-1,2,4-triazole-3-thiols.

Conclusions. Biological screening data indicate the prospects for the search for new antimicrobial substances among the abovementioned derivatives of 1,2,4-triazoles. The most active compounds were 1-((4-ethyl-5-((3-(pyridin-4-yl)-1H-1,2,4-triazol-5-yl)thio)methyl)-4H-1,2,4-triazol-3-yl)thio)propan-2-one and 1-(4-methoxyphenyl)-2-(4-ethyl-5-(((3-(pyridin-4-yl)-1H)-1,2,4-triazol-5-yl)thio)methyl)-4H-1,2,4-triazol-3-yl)thio)ethanone, which showed the most pronounced antimicrobial activity against the Pseudomonas aeruginosa strain (MIC – 31.25 μg/mL, MBcK - 62.5 μg/mL)
Improvement of legal regulation of intermediation in the virtual assets market
Authors: Kulyk Oleh
Published: July 2021

Legal regulation of intermediation in the virtual assets market was analysed. It was grounded, that the professional assistance to virtual assets market participants is necessary because of complexity of transactions with virtual assets. It was found, that the virtual assets service providers carry out intermediation in the virtual assets market as an entity that is acting in the interests of third parties and providing intermediary services to the market participants. Based on the analysis of the legal concept of "intermediation", it was formulated, that intermediation in the virtual assets market can be considered as the economic activity of business entities – virtual assets service providers, - which is carried out with the purpose of providing intermediary services to virtual assets market participants. Types of intermediation in the virtual assets market include: 1) safekeeping or administration of virtual assets and keys of virtual assets; 2) exchange of virtual assets (except when exchange is not carried out directly by the consumers in their own interests); 3) transfer of virtual assets (except when the transfer is not carried out directly by the consumers in their own interests); 4) participation in and provision of financial services, related to an issuer’s offer and/or sale of a virtual asset.
It was found, that according to the draft law “On Virtual Assets” of June 11, 2020 No 3637 virtual assets service providers should be registered, but there is no mention about the license for providing intermediation in the virtual assets market. At the same time, it was grounded, that according to Ukrainian law, the financial intermediation in the virtual assets market, including participation in and provision of financial services, related to an issuer’s offer and/or sale of a virtual asset, should be a subject of licensing
Improvement of the constitutional complaint as an instrument of human rights protection
Authors: Prymakov Kamil , Zakoveria Yuliia
Published: July 2021

The activity of the European Court of Human Rights is investigated and the significance of the relevant practice of the European Court for the judicial practice of Ukraine is determined. It is emphasized, that a constitutional complaint serves as an effective means of protecting fundamental human rights, strengthening the rule of law and building democracy, which has already been tested in many countries around the world. The article notes that the institution of constitutional complaint significantly expands the possibilities of protecting citizens. In general, this institution is a kind of constitutional appeal, which should be understood as a written petition, submitted to the Court to review the constitutionality of the law of Ukraine (its constitutional provisions), which is used in the final court decision in the case of the subject of a constitutional rights complaint. The author also draws attention to the issues of advantages and disadvantages of a constitutional complaint and a constitutional appeal separately. Thus, one of the advantages of having a constitutional complaint is that the grounds for filing a constitutional complaint are a violation of fundamental human and civil rights. The advantages also include the fact that, unlike a constitutional appeal, which is a mechanism solely for interpreting a certain provision of the law, which excludes the possibility for individuals to apply to a constitutional justice body to declare regulations unconstitutional, a complaint directly provides such a right. However, at the same time, the model of the constitutional complaint, introduced in Ukraine on the subject, is an incomplete normative constitutional complaint, which is related to the consideration of a specific case. After all, according to it, only one type of normative legal act is subject to appeal, a law, and only the one that was applied during the trial of the person. It is stated, that ensuring the possibility of a person to take an active part in the control over the activities of higher state authorities, which is implemented in the relevant legal forms, provides grounds for recognizing a constitutional complaint as one of the modern institutions of democracy. In fact, a constitutional complaint is an effective procedural means to protect the fundamental rights and freedoms of citizens
Estimation of voltage waveform at top of transmission line tower struck by lightning of negative and positive polarity
Authors: Trotsenko Yevgeniy , Dixit Mandar Madhukar , Brzhezitsky Volodymyr , Haran Yaroslav
Published: July 2021

The object of research is a circuit that simulates a lightning strike to a tower of 220 kV power transmission line, taking into consideration the reflection of a current wave from 10 nearest towers. Computation of the voltage arising at the top of the struck tower is necessary further to determine the lightning performance of transmission line by various methods. The lightning current has several maxima, in the case of a positive impulse polarity and, accordingly, several minima, in the case of a negative polarity, which are generally being called peaks. In addition, the lightning current impulse has a non-constant steepness in the entire area of current rise up to the first peak. The approximation of the real lightning current by simplified mathematical expressions cannot take into account all its real features. For a more detailed study of transient processes caused by thunderstorm activity, there is a need to use oscillograms of real lightning currents when modeling.
The problem of determining the voltage at the top of the stricken transmission line tower was solved using circuit simulation. For an in-depth study of how the shape of the lightning current impulse affects the shape of the voltage at the top of the tower struck, digitized oscillograms of real lightning currents were used. The simulation was carried out for 7 negative lightning impulses with the first peak varying from –33.380 kA to –74.188 kA. In the case of positive lightning, 3 oscillograms were used with the first peak varying from +38.461 kA to +41.012 kA.
The article shows that the shape of the front of the lightning current impulse and the amplitude of the first peak of the lightning current have a decisive effect on the maximum voltage value at the top of a power transmission line tower struck by lightning. The maximum voltage occurs precisely at the front of the current wave before the first peak of the lightning current. Therefore, the back flashover of the insulation from the tower to the phase conductor is most likely at a moment in time at the front of the current wave. By the time the maximum current is reached, the voltage at the top of the tower will be reduced by several tens of percent, compared to the maximum voltage at the tower, which occurs much earlier at the front of the current wave.
The conducted research contributes to the development of methods for calculating the lightning performance of power lines and extends the scope of application of circuit simulation programs.
Formation of effective concentration of film forming superhydrophobic coatings based on silicon dioxide
Authors: Sivolapov Pavlo , Myronyuk Oleksiy , Baklan Denys , Berehovyj Taras
Published: July 2021

The object of research is the hydrophobization of a coating based on styrene-acrylic copolymer and cellulose acetate butyrate with pyrogenic silicon dioxide. The hydrophobicity or hydrophilicity of a surface depends mainly on the chemical structure of the surface and its roughness. A relief hydrophilic surface will be wetted much more easily than a flat surface of the same material, and vice versa – an increase in the roughness of a hydrophobe is accompanied by a more pronounced repulsion of water. The size and number of irregularities significantly affect the wetting characteristics of the investigated surface. The combination of low surface energy and relief structure forms a superhydrophobic surface. Such surfaces have found application in self-cleaning, frost-resistant, antifriction, electrically conductive and oil-sorbing coatings. In this work, styrene-acrylic copolymer and cellulose acetate butyrate were used as a film former. Pyrogenic silicon dioxide Aerosil R 972, which was hydrophobized with dimethyldichlorosilane, was used as a nanofiller. In this work, the compositions were applied to laboratory glasses by dip coating. The determination of surface energy was carried out using glycerin and diiodomethane. The hydrophobic properties of the coatings were evaluated by measuring the contact angles with water using a goniometer. The analysis of the morphological structure of the coating surface with photographs of a scanning electron microscope has been carried out. The energy state of the surface of the created superhydrophobic coatings has been determined and their surface energies have been calculated using the technique based on the Owens-Wendt model. The process of hydrophobization of polymer-based coatings is investigated, which occurs both due to chemical modification with the introduction of silicon dioxide and due to the creation of nanoroughness of the surface layer of the coatings. The dependences of this process on materials are investigated using an electron microscope and the determination of their surface energy depending on the SiO2 filling. The values of the critical concentration of the modifier for the transition of polymers to the superhydrophobic state have been determined. As a result, the influence of polymer crystallinity on hydrophobization was determined by comparing changes in the surface energy of materials during their modification.
The simplification of computationals in error correction coding
Authors: Semerenko Vasyl , Voinalovich Oleksandr
Published: July 2021

The object of research is the processes of error correction transformation of information in automated systems. The research is aimed at reducing the complexity of decoding cyclic codes by combining modern mathematical models and practical tools. The main prerequisite for the complication of computations in deterministic linear error-correcting codes is the use of the algebraic representation as the main mathematical apparatus for these types of codes. Despite the universalism of the algebraic approach, its main drawback is the impossibility of taking into account the characteristic features of all subclasses of linear codes. In particular, the cyclic property is not taken into account at all for cyclic codes. Taking this property into account, one can go to a fundamentally different mathematical representation of cyclic codes – the theory of linear automata in Galois fields (linear finite-state machine).
For the automaton representation of cyclic codes, it is proved that the problem of syndromic decoding of these codes in the general case is an NP-complete problem. However, if to use the proposed hierarchical approach to problems of complexity, then on its basis it is possible to carry out a more accurate analysis of the growth of computational complexity. Correction of single errors during one time interval (one iteration) of decoding has a linear decoding complexity on the length of the codeword, and error correction during m iterations of permutations of codeword bits has a polynomial complexity. According to three subclasses of cyclic codes, depending on the complexity of their decoding: easy decoding (linear complexity), iteratively decoded (polynomial complexity), complicate decoding (exponential complexity). Practical ways to reduce the complexity of computations are considered: alternate use of probabilistic and deterministic linear codes, simplification of software and hardware implementation by increasing the decoding time, use of interleaving. A method of interleaving is proposed, which makes it possible to simultaneously generate the burst errors and replace them with single errors. The mathematical apparatus of linear automata allows solving together the indicated problems of error correction coding.
The use of waste from the production of gravel as fertilizer for cultivation of technical energy crops
Authors: Bondarenko Anastasia , Tverda Oksana , Repin Mykola , Tkachuk Kostiantyn , Kofanov Oleksii , Kofanova Olena
Published: July 2021

The object of research is the process of management and treatment of crushed stone production waste. Modern approaches to the disposal of crushed stone production waste are analyzed. It is revealed that crushed stone production wastes are mainly used in the construction industry, and their volumes of use are insufficient to neutralize the impact of dumps on the environment. The chemical composition of crushed stone production wastes was analyzed and an experiment was carried out to determine the possibility of their use as fertilizers for the cultivation of industrial energy crops. For the experiment, an energy crop was chosen – sorghum. Sorghum seeds were placed in two types of soil: regular peat substrate and peat substrate with the addition of rock in a ratio of 60:40. Waste from crushed stone production – rock, which includes: quartzite – 90–98 %, pyrophyllite – 1–9 %, ore mineral – 0.3–1 %. The results of the experiment showed an increase in the biomass of sorghum grown on a peat substrate with the addition of rock, 1.5 times, compared with that grown on a conventional peat substrate. Accordingly, the energy yield of sorghum per hectare of field will also grow by 50 %. In addition to increasing the biomass of sorghum, as a result of the experiment, an increase in the number of secondary and tertiary roots was found when it was grown on a peat substrate with the addition of rock. A more developed root system allows the plant to receive more moisture and nutrients, thereby increasing its endurance and drought resistance. The results obtained can be explained by the positive effect of silica, of which more than 90 % of the rock is composed, on the growth and development of plants. It is proposed to increase the level of environmental safety of mining regions through the use of crushed stone waste as fertilizers for industrial energy crops and the transition to alternative energy sources, in particular biofuels made on the basis of these crops.
Evaluation of efficiency and environmental safety of leaching metals from ore: ways of development and prospects
Authors: Lyashenko Vasil , Khomenko Oleh , Chekushina Tatiana , Dudar Tamara , Topolnij Fedor
Published: July 2021

The object of research is traditional mining technologies and technical means in combination with underground block leaching (UBL) of metals from rock ores with their preliminary crushing with explosives in installations mounted in mine workings. One of the most problematic areas is the difficulty of achieving a given crushing quality, as well as the required height of ore storage in the chamber for the subsequent leaching of metals and a loosening factor, taking into account the control of the energy of explosive destruction of rock ores.
The study used:
– data from literary sources and patent documentation in the field of technologies and technical means for UBL of metals from ores in energy disturbed massifs, substantiation of technological parameters of operational blocks;
– laboratory and production experiments;
– physical modeling of metal extraction from ores from the average linear size of a piece of blasted ore.
Analytical studies, comparative analysis of theoretical and practical results using standard and new methods were carried out with the participation of the authors. It was found that the most intensive infiltration leaching occurs when the size class of ore lumps is –100+0 mm. Metals are extracted from fractions –200+100 mm less intensively and for a longer time. To neutralize and flush the spent ore mass, it is recommended to treat it with lime solution and mine water through wells for supplying leaching solutions (irrigation system). The protection of the hydrogeological environment is carried out by silting the bottom of the chamber for collecting productive solutions with clay solution and by constant monitoring of mine water pollution in the zone of UBL influence. On the basis of the positive results obtained from the study and implementation of technologies for UBL of metals from rock ores during the development of block 5–86, in accordance with the recommendations issued, the same approach was used for blocks 5–84–86 and 5–88–90, as well as industrial experimental block 1–75–79. Due to the involvement in the production of substandard ores, the raw material base for the extraction of metals, at the operating mines, can be increased by 1.4–1.6 times.
The research results can be used in underground mining of ore deposits of complex structure in Ukraine, the Russian Federation, the Republic of Kazakhstan and other developed mining countries of the world.
Improvement of the mechanism of management accounting of enterprise expenses in the conditions of clusterization
Authors: Hlasov Pavlo
Published: July 2021

The object of research is the implementation of clustering of the economy as an effective mechanism for management accounting of the costs of enterprises. One of the most problematic areas is the identification of the main priority areas of clustering the economy, which will actively influence the development of management accounting of enterprises' costs. The use of a cluster mechanism for management cost accounting, thanks to management, information, personnel, financial, investment, and innovation potential, will create a research base for developing cost accounting methods and assess the prospects for its use in clusters.
The analysis of the current state of the introduction of clustering of the economy is made on the example of Ukraine. The main characteristics of the directions of development of the introduction of clustering of the economy have been determined. The main priority areas of clustering of the economy will actively influence the development of management accounting of enterprises' costs.
In the course of the study, approaches to clustering the economy as an effective mechanism for management accounting of enterprises' costs are used. The stages of the introduction of clustering of the economy as an effective mechanism for management accounting of the costs of enterprises are determined. These stages provide for the determination of the role of clustering the economy in creating an effective mechanism for accounting for expenses in clusters and the development and implementation of action plans for its implementation. The next step is to analyze the implementation of management accounting of expenses in clusters and develop the principles of its formation. For their implementation, it is proposed to develop directions for the development of the introduction of clustering of the economy and to present the cluster mechanism as an effective factor in improving the management accounting of enterprises' costs. Thanks to this, it is possible to prevent and solve the problems of management accounting of expenses in clusters and to increase the efficiency of the cluster association. In comparison with similar well-known methods, the proposed approaches allow to form an effective management cost accounting system and improve management in clusters using the cluster approach.
Effect of heat treatment with biopreparation on the quality of tomato fruit during storage
Authors: Priss Olesia , Zhukova Valentina , Holiachuk Serhii , Karman Tetiana
Published: July 2021

Tomato fruits are characterized by a high content of biologically active substances, which makes them an irreplaceable component of nutrition. However, tomatoes are perishable products and require additional measures to extend storage. One of the most problematic areas is the limited use of synthetic chemicals for processing fruit prior to storage. An alternative to them are natural exogenous preparations with antioxidant and disinfectant effects, which are environmentally friendly. However, the treatment of fruits with natural substances does not have sufficient efficiency in comparison with synthetic ones, which requires a combination with other post-harvest measures to increase cold stress. The object of research is the process of storing tomato fruits using heat treatment with a biological product. Numerous studies indicate the feasibility of using the processing of fruits with biological products to extend their storage duration. Standardized preparations based on bee products are of great interest. The research carried out in this work is aimed at extending the shelf life of tomato fruits while maintaining their quality by heat treatment of tomatoes with a solution of a biological product (tincture of the biomass of the larvae of the greater wax moth) before storage. In the course of the study, it was found that such treatment prolongs the shelf life of blank tomatoes up to 50 days, which is 40 % longer compared to the control. It has been proven that fruits treated with a biological product demonstrate a low level of metabolic processes. This is due to the fact that the proposed treatment slows down the rate of accumulation and degradation of sugars and organic acids. In particular, in fruits treated with a biological product, the sugar content is 8.8–10.6 % higher than in the control. The rate of decrease in the level of titratable acidity in the variants treated with the biological product is 15–19 % slower than in the control. The above results indicate the effectiveness of the use of a biological product for storing tomato fruits in comparison with similar measures.
Budget expenditure management in conditions of decentralization on the example of Ukraine
Authors: Shaporenko Olena
Published: July 2021

The object of this research is budget expenditures. The limited financial resources are typical for most countries of the world, therefore, it is important to find and improve the ways of forming and implementing the budgetary policy of the state at every stage of the budgetary process. The budget of any country reflects important economic and social aspects of the life of society as a whole and each person individually. Of course, the budget is a powerful regulator of the main economic processes. One of the most problematic areas is ineffective and inefficient use of budget expenditures. Therefore, this study is aimed at developing practical recommendations for optimizing the process of managing budget expenditures in the context of decentralization to ensure sustainable socio-economic development of the state. To achieve this aim, the author used the problems of managing budget expenditures on the example of Ukraine in the context of the introduction of decentralization processes in the country.
The research used the methods of scientific abstraction, systems approach, grouping and classification. To determine the integrated indicator of the efficiency of budget expenditures management at the level of a budgetary institution, society, region, state, a statistical method was used that reflects the correlations of the constituent indicators. To optimize the process of managing budget expenditures, which is considered as a cycle of public policy, two main approaches are proposed. First, a change in the concept of budget expenditures management – a transition from the consumption budget to the development budget, which will allow achieving sustainable economic development in the long term. Secondly, it is proposed to introduce an assessment of the effectiveness of budget expenditure management by calculating an integrated indicator, consisting of all components that reflect the effectiveness of the budgetary policy being implemented.
Thanks to the proposed methodology, it is possible to timely adjust the policy for managing budget expenditures in the event of an unsatisfactory value of the integrated indicator of the effectiveness of managing budget expenditures. This provides the advantage that such an adjustment will have a positive effect, since it will be carried out both at the level of a budgetary institution, society, region, and the state as a whole.
O ENSINO DE GEOGRAFIA SOB UMA PERSPECTIVA CRÍTICA E REFLEXIVA
Authors: Dantas George Luiz Carneiro , Carvalho Neto Eulália Raquel Gusmão de
Published: July 2021

A educação sistematizada, mais do que nunca, cumpre importante papel de socialização reflexiva e crítica. Assim, o presente artigo tem como objetivo discutir o ensino e a aprendizagem da geografia. Toma como referência uma investigação desenvolvida durante experiências vivenciadas no chão da escola, proporcionada pelo Programa Institucional de Bolsas de Iniciação à Docência – PIBID.  Tal investigação adota a observação participante apoiada na pesquisa qualitativa e fundamenta-se na pedagogia crítica.  Portanto, a discussão encontra-se assim organizada: no primeiro momento faz uma discussão sobre o ensino da geografia; posteriormente apresenta um relato de uma das experiências e para finalizar busca responder aos seguintes questionamentos: como o fazer docente pode transforma-se em uma prática onde a reflexão e análise crítica dos assuntos estudados seja uma constante entre professores e alunos? De que maneira o ensino da geografia pode realizar-se como uma prática dialética que promova a interação social? Conclui que a aula de campo como estratégia metodológica é uma excelente aliada dos livros didáticos, pois preenche lacunas e amplia os horizontes diante dos conceitos estudados. Depreende que o planejamento é fundamental para o seu sucesso e que o ensino da geografia quando fundamentado pela pedagogia crítica, possibilita a formação ética, o desenvolvimento intelectual e o pensamento crítico do educando. Torna-se dinâmico e transformador.
A CERÂMICA VERMELHA E OS IMPACTOS SOCIOAMBIENTAIS EM UMA CIDADE NO INTERIOR DO RIO GRANDE DO NORTE
Authors: De Medeiros Sanclair Solon
Published: July 2021

presente trabalho foi concebido com o objetivo de discutir sobre o processo produtivo da indústria de cerâmica vermelha e os impactos socioambientais decorrentes desse processo no município de Currais Novos com vistas a traçar uma relação entre meio ambiente, economia e impactos socioambientais. A metodologia utilizada consistiu de levantamento bibliográfico e aplicação de entrevistas estruturadas com proprietários e funcionários. Para definir o número de entrevistados utilizou-se o critério de saturação, pois consiste em determinar a realização de entrevistas até o momento em que não se obtenham dados novos que possam acrescentar discussões ao tema. Por fim, são apresentados os resultados que identificam os impactos socioambientais das cerâmicas citando as emissões atmosféricas, resíduos sólidos, baixa renda dos funcionários, equipamentos de segurança inadequados, doenças de ordem respiratória entre outros. São ainda sugeridas medidas para minimização destes impactos como forma de tornar a Indústria de Cerâmica Vermelha no município mais sustentável.
Educação física em ação: a eficácia da utilização de um vlog como recurso didático no ensino médio integrado
Authors: Sobrinho Eder Marcio Araujo , Rivera José Anglada
Published: July 2021

O objetivo deste estudo foi desenvolver um recurso didático capaz de aumentar o interesse pelas aulas de Educação Física em um curso técnico do Ensino Médio Integrado no Instituto Federal do Amazonas (IFAM) campus Presidente Figueiredo. A pesquisa é de natureza aplicada, com abordagem qualitativa e método de pesquisa-ação, com utilização de pesquisa bibliográfica, documental e o questionário como técnicas de coleta de dados. Participaram do estudo 65 alunos. A primeira etapa envolveu a seleção dos conteúdos, criação dos roteiros e gravação de videoaulas. Na segunda etapa ocorreu a aplicação das videoaulas por meio de um Vlog. A terceira etapa foi composta pela avaliação do Vlog. Os resultados apontaram uma melhora significativa na aprendizagem e também o aumento da participação e interesse dos alunos pelas aulas de Educação Física.
Pengaruh Pandemic Covid 19 terhadap Net Performing Financing Bank Pembiayaan Syariah di Indonesia
Authors: Tiwu Maria Indriyani Hewe , Angi Yohana Febiani
Published: July 2021

This study aims to analyze the effect of the Covid 19 pandemic on NPF BPR Sharia during the study period from January 2017 to July 2019. The analytical method used is multiple regression with the COVID-19 pandemic as a dummy variable. The results of this study indicate that the Covid 19 pandemic has no significant effect on the Net Performing Finance of Islamic BPRs during the study period. Islamic BPRs apply sharia principles, namely the provision of funds or bills that are equalized to the results in mudharabah, istishna, murabahah and musyarakah, so that the impact of the Covid pandemic does not have a significant effect on the NPF of Islamic BPRs
Nursing care for patients in post-transplantation of hematopoietic stem cells: an integrative review
Authors: Rodrigues Jéssica Alline Pereira , Lacerda Maria Ribeiro , Galvão Cristina Maria , Gomes Ingrid Meireles , Meier Marineli Joaquim , Caceres Nayla Tamara de Godoi
Published: July 2021

ABSTRACT Objectives: to analyze the available evidence on the nursing care provided to patients after hematopoietic stem cell transplantation. Methods: integrative review with the search for primary studies in four databases and a virtual health library. A broad search strategy was used, including research published in English, Brazilian Portuguese, or Spanish, between 2008 and 2018, totaling a sample of 42 studies. Results: the studies were grouped into three categories: multiple nursing care (n=19), first-line care (n=18), and self-management of care (n=5). Conclusions: nursing care is critical, comprising patients’ physical, psychological and social aspects. It occurs in hospital and home contexts, mainly involving technical actions and health guidance. The evidence identified provide subsidies for decision-making; however, most studies are of the non-experimental type, indicating the need for conducting intervention research.
Mortality in community-dwelling elderly: coefficient and associated factors
Authors: Boitrago Sarah Caroline Oliveira de Souza , Souza Andressa Samantha Oliveira , Cunha Pâmela de Oliveira , Vieira Maria Aparecida , Caldeira Antônio Prates , Carneiro Jair Almeida , Costa Fernanda Marques da
Published: July 2021

ABSTRACT Objective: Analyze the coefficient, associated factors, and causes of mortality in community-dwelling elderly. Method: Longitudinal and analytical study. Data collection, at baseline, was performed in the elderly’s home. The first wave occurred after 42 months. Complementary data collection identified the cause of death. Variables analyzed: demographic, social, economic, and clinical. Logistic regression was used for data analysis. Results: The coefficient of mortality was 7.9%. The variables associated with mortality were longevity, inability to read, absence of religious practice, stroke, consultation, and hospitalization in the last 12 months. The main groups of primary causes of death were ill-defined and unspecified causes of mortality, respiratory system diseases, and neoplasms. Conclusion: The coefficient of mortality in community-dwelling elderly was lower than national and international studies investigated.
Brazilian Nursing Association: fight for space in the new federal capital
Authors: Teixeira Kyvia Rayssa Bezerra , Queirós Paulo Joaquim Pina , Marques Maria da Graça Moreira Moscoso , Abreu Marcleyde Silva de Azevedo , Aperibense Pacita Geovana Gama de Sousa , Almeida Filho Antonio José de , Santos Tânia Cristina Franco
Published: July 2021

ABSTRACT Objectives: to analyze the transfer process of the Brazilian Nursing Association to its new headquarters in Brasília/Federal District. Methods: qualitative, socio-historical, and documental study. The analysis generated the following characteristics: Associate reorganization: the transfer from the Central ABEn headquarters; and the Strategies used in the struggle for the appropriation of space. Results: the Brazilian Nursing Association was engaged in a struggle, which lasted nine years, for the acquisition of land in the new Federal Capital, Brasília, to ensure a prestigious place for the Association, and for nursing as well. Final Considerations: together with their sections, undertook efforts and implemented strategies to find a space in the new Federal Capital, allowing visibility and recognition to the nursing profession.