bluuebunny/crossref_metadata_2025 huggingface dataset:
Professor Yuliy Fedorovych von Finck: life pages, achievements and heritage
Authors: Korzh Mykola , Dynnik Olexii , Nikolchenko Olga , Samoilova Kateryna , Tymchenko Iryna
Published: June 2023

Professor Yuliy Fedorovych von Finck: life pages, achievements and heritage
Changes in the indicators of connective tissue metabolism in the blood serum of experimental rats under the conditions of modeling the development of degenerative processes in paravertebral muscles
Authors: Radchenko Volodymyr , Leontyeva Frieda , Tuliakov Vladyslav , Skidanov Mykyta , Nikolchenko Olga , Skidanov Artem
Published: June 2023

Low back pain is a common health problem. To deepen the understanding of the pathogenesis of the disease, experimental studies on animals with modeling of the pathological process are necessary. Objective. Based on the analysis of biochemical markers of connective tissue metabolism in the blood serum of laboratory rats, the applicability of the studied models of degenerative muscle tissue damage to study the relationship between this condition and the development of disorders in spinal motor segments was assessed. Methods. Two models of reproduction of degenerative processes in the paravertebral muscles of white rats were tested: I (n = 5) — alimentary (diet-induced) obesity, by keeping it for 3 months on a high-calorie diet; II (n = 5) — ischemia, by tying the large rectus muscles of the back with suture material (45 days). Control group (n = 5) — intact animals of similar age and sex. The content of glycoproteins, total chondroitin sulfates (CS), hexosamines, protein-bound hexoses, seroglycoides, fractional distribution and total content of hydroxyproline and glycosaminoglycan sulfates (GAGs) were investigated in the blood serum of rats. The results. In the blood serum of rats of groups I and II, a significant increase compared to the control level of glycoproteins was determined, with a greater effect in the ischemia model, but no significant changes of protein-bound hexoses, hexosamines and CS were recorded. The level of inflammatory markers (sialic acids and seroglycoides) in the blood serum of animals of both groups did not differ significantly from the control, and changes in the parameters of hydroxyproline (except for the slightly changed protein-bound fraction) and GAGs were significant only for the ischemia model. Conclusions. Based on the analysis of biochemical markers of connective tissue metabolism in rats of groups I and II, changes characteristic of degenerative processes were determined, with a greater manifestation in the ischemia model. No significant increase in biochemical markers of inflammation was recorded. Both models can be used to reproduce dystrophic processes in osteochondrosis.
Histological features of articular cartilage and bone marrow reparative potential under conditions of coxarthritis in patients with radiographic signs of epiphyseal dysplasia
Authors: Huzhevskyi Igor , Herasymenko Sergey , Poluliakh Mikhail , Babko Andrey , Herasymenko Andrey , Рoluliakh Dmitry , Diedukh Ninel , Panchenko Lesya
Published: June 2023

Coxarthritis in patients with radiographic signs of  epiphyseal dysplasia causes disturbances of social adaptation of this patients group at a young age and ensure the relevance of studying the problem of optimizing the orthopaedic treatment of this patients category. Objective. To define the tactics of orthopaedic treatment in such patient category based on study of morphological features of articular cartilage and osteogenic activity of bone marrow stem stromal cells. Materials and Methods. We have clinically examined 68 adult patients having coxarthritis  in the presence of radiological signs of epiphyseal dysplasia. In 52 cases we performed total hip and knee arthroplasty that allowed to obtain articular cartilage fragments for histological study and epiphysis bone fragments for study of reparative potential of the bone tissue. Results. In patients having coxarthritis  that evolves on the ground of epiphyseal dysplasia by histological and cultural studies we have obtained the data as for deep microstructural disorders in joint cartilage matrix organization as a result of modification of collagen mesh in patients having epiphyseal dysplasia. We have identified the fact of significantly increased bone marrow stem cells proliferative potential at significantly decreased quantity of colony forming fibroblast units in spongious volume unit in epiphysis zone in this patients group which indicates a threat of decompensation of reparatory bone potential risk. Conclusions. Pathological factors of increasingly progressing course of osteoarthrosis in the presence of radiological signs of epiphyseal dysplasia are deep microstructural disorders of joint cartilage matrix organization as a result of modification of collagen mesh and consequent changes of epiphysis of the lower limbs form. There is no possibility of prevention and etiological therapy of coxarthritis evolving from epiphyseal dysplasia, meanwhile there is a threat of decompensation of reparatory bone tissue potential in epiphysis zone in this patient category. Therefore, in patients with coxarthritis and radiographic signs of  epiphyseal dysplasia, resistant to the course of conservative treatment, it is advisable do not delay use the method of joint arthroplasty.
Oleksandr Oleksijovych Kostrub
Authors: “Orthopaedics, Traumatology and Prosthetics” Staff of
Published: June 2023

The article is dedicated to the head of the Department of Sports and Ballet Trauma of the State Institution "Institute of Traumatology and Orthopedics of the National Academy of Medical Sciences of Ukraine", doctor of medical sciences, professor, doctor of the highest qualification category O. O. Kostrub.
Larysa Djavdetivna (Yevgenivna) Gonchar
Authors: “Orthopaedics, Traumatology and Prosthetics” Staff of
Published: June 2023

The article is devoted to a talented teacher who was admired by the cadets; to a thoughtful doctor who seeks to determine the cause of the disease; to the talented scientist Goncharova L. J.
WORK OF MUSCLES RESPONSIBLE FOR THE FUNCTIONING OF THE FOOT IN CONDITIONS OF KNEE JOINT CONTRACTURE
Authors: Karpinska Olena , Khaled Obeidat
Published: June 2023

Prolonged walking with knee joint contracture causes changes in the functioning of the muscles of the lower leg and foot. Objective. To study the functioning of the foot and leg muscles in the conditions of knee joint contracture using a human walking model. Methods. The gait analysis was performed in the OpenSim 4.0 program. The modeling was based on the gait2394 model. The following muscles were studied: m. peroneus brevis, m. peroneus longus, m. peroneus tertius, m. tibialis posterior, m. tibialis anterium, m. flexor digitorum longus, m. flexor hallucis longus, m. extensor digitorum longus, m. extensor hallucis longus. Results. Restriction of joint mobility leads to a redistribution of muscle strength. In conditions of 15° knee joint flexion contracture, support on the toes causes significant overstrain of the muscles responsible for the functioning of the lower leg, foot and toes. In particular, the m. peroneus brevis and m. peroneus longus are quite long, their function is impaired, but the required increase in strength is from 10 to 400 %, while the m. peroneus tertius (short), for foot flexion in some phases of the step, its strength increased threefold. Among the muscles of the lower leg, the greatest increase in isometric strength was required for the m. tibialis anterior compared to the m. tibialis posterior, which works mainly for foot extension. For the muscles responsible for flexion/extension of the toes in conditions of knee joint contracture, a significant, sometimes 3–5 times, increase in strength was necessary to perform the required function. Conclusions. Knee joint contracture leads to a change in the biomechanics of the entire lower extremity, namely, to an increase in changes in the functioning of the muscles responsible for the functioning of the foot, which work under such conditions with a constant increase in tension. Given the impact of knee joint contracture on the functioning of the muscles of the lower extremity, it is possible to predict the course of thepathological process, determine which muscle groups are most affected and which muscle group needs to be corrected before and after surgery.
SURGICAL TREATMENT OF THE PROXIMAL HUMERUS FRACTURES IN PATIENTS WITH OSTEOPOROSIS. PROBLEMATIC ISSUES AND DEVELOPMENT PROSPECTS
Authors: Korzh Mykola , Makarov Vasyl
Published: June 2023

Fractures of the proximal part of the humerus (FPPH) are the third most common in the elderly after fractures of the femur and radius. Objective. On the basis of analysis of the literature to identify problematic issues of surgical treatment of patients with FPPH and osteoporosis and prospects for improving implants and algorithms treatment. Methods. The material of the study was the scientific papers available in Google search engines, PubMed,Medline, published in specialized sources. Results. It is shown that are used today there are Neer and AO/OTA classifications of FPPH. Conservatively manage of FPPH in 80 % of patients with two-fragmentary fractures according to Neer or type A2/A3 according to AO/OTA. The remaining 20 % patients have threeand four-segment FPPH (types B and C according to AO/OTA), the conservative treatment of which consists of problem, especiallyin patients with osteopenia and osteoporosis. Surgical treatment of FPPH is recommended in case of fractures types 11B2-3, 11C2-3 in young patients or in the elderly age that requires significantfunctionality of the upper extremity. Positive results of treatment of FPPH types 11B3, 11C2-3 on the background of osteoporosis obtained after installation LCP-plates with allo- or autograftfrom the fibula bones, as well as support screws, filling of cavities in the humerus head fragments with bone cement, or using free bone implants are most often used. These methods achieve andsupport to enable stable repositioning of even complex type fractures 11C2-3. Blocked intramedullary nails of the third generationhave improved mechanisms for attaching proximal screws and specific fixation of bone fragments, as well as straight geometry. Primary reverse shoulder arthroplasty in case of type 11С2, 11С3fractures according to AO/OTA enables to obtain positive results in most patients. Conclusions. Surgical treatment of patients with FPPH is advisable for active patients, it is possible to improvefunctional results compared to conservative manage and avoid the most complications of it.
MAIN ASPECTS OF THE ORGANIZATIONAL AND MANAGEMENT PROCESS OF ENSURING STABLE DEVELOPMENT OF THE ENTERPRISE
Authors: TKACHUK M.P.
Published: June 2023

Objectives. The article is devoted to the development and substantiation of the stages of systematic implementation of the organizational and managerial process of ensuring the stable development of the enterprise. Results. The article reveals the main aspects of the management process, determines the feasibility and factors to increase its effectiveness. The significance of the organizational structure is substantiated, its functions in the management process are determined. An integrated system of interaction of organizational means and the process of making and implementing management decisions is revealed. The central place in the long-term period of development of the enterprise is occupied by organizational and managerial support, which means the organization of system-integrated management of all functional processes, their rational relationship and sequence of implementation. Scientific novelty. The own development of step-by-step implementation of the organizational and managerial process directed on the decision of problems of functioning and development of the enterprise is offered. Practical importance. It involves the application and development of new methods, innovation decision-making, ensuring an effective mechanism for the implementation of internal capabilities, adaptation to environmental conditions, reducing the impact of negative factors on the overall performance of the enterprise.
ECONOMIC AND MATHEMATICAL MODELING OF THE RESULTS OF MEASURES TO ENSURE TRAFFIC SAFETY ON RAIL TRANSPORT
Authors: HNENNYI OLEH , DIDENKO D.V.
Published: June 2023

Goal. The purpose of the work is to develop a scientific and methodological approach to predicting the number of transport events and money assessment of losses from them, which will allow to determine the economic effect of ensuring traffic safety on rail transport and evaluate their economic efficiency based on risk-oriented approach.  Method.  The effectiveness of investments is defined as the ratio of the effect of investment.  For quantitative assessment of the level of train safety, this level is considered in a reverse risk level associated with the movement of trains.  Therefore, the quantitative assessment of an increase in security can be defined as a decrease in the level of risk associated with the movement of trains.  The level of elementary risk can be evaluated in cash as a product probability to occur an appropriate event and the losses that it may cause.  The risk associated with the movement of trains may be determined based on the probability of transport events and mathematical expectations of losses from the onset of transport events.  The results.  The methodical approach to modeling the number of transport events based on the theory of reliability of technical systems has been developed, as well as approaches to determining the monetary estimates of transport events by their types.  The indicated results have signs of scientific novelty.
A COMPARATIVE STUDY OF INDIRECT METHODS OF TIME AND FREQUENCY CHARACTERISTICS MEASUREMENT OF THE LINEAR OBJECT IN THE SIMULATION MODEL
Authors: Gavryliuk V. I. , Bezrukov V. V. , Rybalka R. V.
Published: June 2023

On the basis of the developed imitating model and the carried out modeling it is shown, that using developed method allow to receive sufficient for practical use accuracy of system characteristics measurements of automatics and communication lines.
THE METHOD OF DETERMINING THE POSITION OF THE ANCHOR ON THE VALUE OF THE INDUCTANCE OF THE WINDING OF THE RELAY
Authors: Gavryliuk V. I. , Profatylov V. I.
Published: June 2023

The method of definition of a relay anchor situation on inductance of a winding of the relay is offered in the given paper. The method is based, that the working air backlash decrees at the switching on a relay. It follows to the increase of winding inductance, which does not depend on a current practically and it determined by size of an air backlash between an anchor and core. It allows us to automation measurements of mechanical parameters of electromagnetic relays of railway automatics without removal of casing in the accordance with the operating-technical requirements.
THE MODELING OF AIR POLLUTION WHEN THE LIQUID EVAPORATES FROM THE SOIL
Authors: Gunko Ye. Yu.
Published: June 2023

The 3D model to simulate the pollutant transfer near building after accidents was developed. The model is based on the transport gradient model and the model of invisid imcompressible fluid. The results of numerical experiments are presented.
THE JUSTIFICATION OF THE CHOICE OF POWER TRACTION INVERTER MULTI-SYSTEM OF ELECTRIC LOCOMOTIVES
Authors: Muha A. M.
Published: June 2023

Analysis of the influence of the type of the traction engine is organized In article on power of the traction steady-state converter. The Incorporated notion module traction converter and are received main quantitative correlations for traction converters with different number of the modules.
MATHEMATICAL MODELING OF THE AMOUNTS OF TAX REVENUE RISK
Authors: Mykhailova T. F. , Piskunova O. V.
Published: June 2023

An econometric model for forecasting volumes of tax returns and estimating risk of not being completed plan indices have been proposed.
FINITE-AUTOMATA-BASED MODELING OF SPATIAL FLUCTUATIONS OF TRUSS AND BEAM STRUCTURES
Authors: Raspopov O. S.
Published: June 2023

The possibilities of applying logical machine, the method of initial parameters and associated matrixes into spatial vibration analysis of rod and beam constructions with continues parameters have been researched.
ACCOUNTING OF GIGA-CYCLE FATIGUE OF STEEL IN ASSESSING THE SERVICE LIFE OF CRITICAL PARTS OF RAILWAY EQUIPMENT
Authors: Kossov V. S. , Ohuienko V. M. , Ohuienko V. V.
Published: June 2023

The phenomenon found out recently gigacycle fatigue, connected with destruction of materials at loadings of a smaller limit of endurance and at more than 108 cycles regime, directly concerns traffic safety. For an estimation of a residual resource and decision-making on prolongation of service life of responsible vehicle details carrying out of test on determination mechanical properties applied steels in the field of high cycle’s regime is necessary.
ABOUT THE NETWORK OF AUTOMATED CONTROL SYSTEM CREATING OF UKRAINIAN FREIGHT TRANSPORT
Authors: Bashlaiev V. K. , Tseitlin S. Yu. , Velykodnyi V. V.
Published: June 2023

It is investigational question in relation to creation of the unique automated control system by railways freight transportations in Ukraine. The analysis of programmatic-technical architecture methods of providing of unity of informative base, commons projects decisions transition problems, is executed to the new system.
THE SUPPORT SYSTEM PRINCIPLES OF DECISION-MAKING AND MANAGEMENT OF FREIGHT RAILWAY TRANSPORT OF UKRAINE
Authors: Zhukovytskyi I. V. , Skalozub V. V. , Ustenko A. B.
Published: June 2023

Approach and main principles is offered in relation to transformation of the automated processes control systems of freight transportations in the systems of support of decision-making administrative personnel with the use of the proper modern facilities of design and optimization. It is rotined that it is expedient to incarnate such functions in the process of development of the special subsystems of АСК ВП УЗ – analytical servers.
THE OPTIMAL VALUE OF THE REQUIRED FLEET OPERATORS TAKING INTO ACCOUNT TECHNOLOGICAL AND ECONOMIC RISKS
Authors: Skalozub V. V. , Soltysiuk O. V. , Cherednychenko M. S.
Published: June 2023

The method for calculation an optimum necessary park of freight carriages of operators companies and industrial enterprises is offered. A method takes into account the technological, financial et al risks at implementation of transportations. The feature of method consists in the partial use of carriages of inventory park.
THE CALCULATION AND EXPERIMENTAL METHOD "CONDITIONAL CROSS BEAM" AND ITS ACCURACY
Authors: Sukhorukov B. D.
Published: June 2023

The accuracy estimation for new experimental method of calculation for determine transverse placing coefficients for normative road loads on the bridges was made.
THE INFLUENCE OF CARBON STEEL STRUCTURAL COMPONENTS DISPERSION ON FRACTURE RESISTANCE
Authors: Vakulenko I. O. , Hryshchenko M. A. , Perkov O. M.
Published: June 2023

The observed questions of estimate stress intensity coefficient, strength of fatique and toughness behavior is considered to be result of a directional variation in the grain size of austenite and size of ferrite pearlite in carbon steel.
ABOUT THE REASONS FOR THE NUCLEATION OF FATIGUE CRACKS ON THE SURFACE OF CONCRETE BANDAGES
Authors: Vakulenko I. O. , Hryshchenko M. A. , Perkov O. M.
Published: June 2023

Cleavage crack formation is a process nucleation caused by the high local stress produced by inhomogeneous elastic-plastic deformation followed by cycles change of temperature in tyre.
THE DEFINITION OF FUNCTIONAL DETERIORATION OF RAILWAY ROLLING STOCK
Authors: Gnennyi O. M.
Published: June 2023

In the article substantiated necessity to determine functional depreciation of railroad cars in the correlation with locomotives. The functional depreciation determine comparison net present value of the cash flows from using of the appraisal object and from using the analogue object. The factors affecting to the functional depreciation is determined.
CRITERIA AND METHODS OF EVALUATING THE MECHANICAL CONDITION OF THE RAIL STEEL AND THEIR EXPERIMENTAL VERIFICATION
Authors: Sosnovskyi L. O. , Kebikov O. O.
Published: June 2023

The criterion of mechanical condition of steel, basing on interconnection of a limit of contact fatigue, a limit of mechanical fatigue, a ultimate strength and a hardness. The technique of an estimation of a mechanical condition of a rail steel is developed. Experimental researches of non-thermostrengthened rails after maintenance in conditions of the subway are executed. Character of distribution of hardness on a surface of rolling of the head of a rail is investigated, characteristic zones of its straining are fixed. Microstructural explorations of a material of rails in a superficial zone of contact to a wheel are executed. During the experiments validation of the developed criterion are received.
THE PRODUCTIVITY OF LABOUR IN THE HOUSEHOLD ELECTRIFICATION AND POWER SUPPLY OF UKRAINIAN RAILWAYS
Authors: Romanko V. I. , Malyshko I. V.
Published: June 2023

The article is considered the productivity of labor in economy of electrification and of electrosupply of Ukrainian railway, it’s methods of estimation and analysis for 2001-2006.
RECOMMENDATIONS FOR TECHNOLOGISTS PERFORM A REPAIR PATH FOR LONG-CLOSED DRIVING AND FINDING TRAIN SPEED AFTER THE COMPLETION OF THESE WORKS
Authors: Umanov M. I. , Tsyhanenko V. V. , Reidermeister O. H. , Khalipova N. V.
Published: June 2023

In clause offers on technology of performance of modernization of a way are formulated on is long the closed site. On the basis of the analysis of results theoretical and experimental researches recommendations on an establishment of admitted speeds of movement of trains in curves after performance of modernization are formulated on is long the closed site.
THE AIRPORT MANAGEMENT IN MODERN CONDITIONS
Authors: Chyhasova N. M.
Published: June 2023

The value of air-port is considered as parts of the aviation transporting system. The analysis of structures of management by air-ports is executed. Macroeconomic indexes influencing on air transportations are adopted.
TO THE QUESTION ABOUT THE EXISTENCE OF ODD PERFECT NUMBERS
Authors: Loshkarev M. O.
Published: June 2023

A short historical certificate over of development of knowledges is in-process brought about the «accomplished numbers» and impossibility of existence of the odd «accomplished numbers is grounded».
LOGISTIC APPROACH IN THE MANAGEMENT OF RAILWAY TRANSPORTATION
Authors: Yanevych V. Z. , Okorokov A. M.
Published: June 2023

Problem of work concordance of separate subdivisions of the transport system, which secure transportation of loads for realization of deliveries on chart «production – transport – an user» is considered.
THE SOLUTION OF STRUCTURES OPTIMIZATION TASKS WITH USING OF THE MODERN SOFTWARE SYSTEMS
Authors: Yagoda P. O.
Published: June 2023

The task of optimization by the system of the spatial design Solid Works with the integrated module of the eventual-element analysis Cosmos Works decides on the example of pivot beam of passenger carriage
TO THE QUESTION OF THE ENHANCEMENT OF THE MECHANICAL PROPERTIES AND WATER RESISTANCE OF THE CONCRETE LINING
Authors: Borshchevskyi S. V. , Labinskyi K. M. , Halechko S. Yu.
Published: June 2023

The basic ways on increase durability and hydroproof properties concrete fastening, promoting organization wаterleaks are considered at shaft vertical sinking of mines by development resources-protect technologies of shaft sinking. The questions of increase of waterproofing properties concrete of shafts are considered. The results of laboratory researches are submitted and the directions of perfection of technology shaft sinking in conditions raised water flows are offered.
STUDY OF PHYSICO AND MECHANICAL PROPERTIES OF SOLUTIONS FOR CONCRETING UNDER THE WATER
Authors: Klochko B. H. , Krasniuk O. V. , Momot V. O.
Published: June 2023

In the article researches of physics-mechanical properties of solutions are resulted for concreting under water. On results researches reologycheskykh and prochnostnykh descriptions optimum compositions are developed for yn'ektyrovanyya at repair of concrete transporting buildings under water.
THE USE OF STEAM REGRESSION WITH CLEAR PARAMETERS ON FUZZY NUMBERS TO MODEL THE EXPERT MONETARY VALUATION OF LAND PLOTS
Authors: Kovalchuk K. F. , Shcherbakov Ye. Yu.
Published: June 2023

The urgency of modeling of land assessment expert procedure is shown. The complexities, which is arising during application of usual mathematical methods to data, which has expert origin, are analyzed. Limitations in usage of existing fuzzy regression methods are analyzed. It has been offered fuzzy regression method, which does not apply limitations on the shape of fuzzy numbers.
THE DEFINITION OF SWITCHING TRACTION MOTORS QUALITY
Authors: Bezruchenko V. M. , Shapovalov A. V.
Published: June 2023

Influence of the change air clearance under additional pole on position of the centerline of the area of without sparks work are shown in article. The way of the forecasting of the position to centerline of the zone sparklesswork depending on deflections geometric parameter magnetic chain additional pole are offered.
THE USE OF APPLICATION PROGRAMS FOR STATISTICAL DATA ANALYSIS OF THE ROLLING STOCK OPERATION
Authors: Falendysh O. P. , Ivanchenko D. O. , Bondarenko Ye. V.
Published: June 2023

The description of possibilities of the developed computer systems and their use for the statistic analysis of data of operation of the rolling stock is given.
THE MOTOR-COMPRESSOR XPS AS AN OBJECT OF REGULATION
Authors: Gilevych O. I. , Dronov R. O. , Kushneryk Ya. P. , Korets Ye. V.
Published: June 2023

In the article the analysis of work of motor-compressor is conducted in transient modes, which considerably influences on its reliability and determines the readiness of a locomotive to function.
THE DETERMINATION OF THE STATISTICAL PARAMETERS OF THE CONVERTERS IN CIRCUITS TEST STANDS FOR TRACTION MOTORS OF THE LOCOMOTIVE
Authors: Bezruchenko V. M. , Marenych O. L.
Published: June 2023

In the article the method of static converters parameters calculation is resulted. It is proposed to replace the electromachine linear generator and balancing booster with static converters in the scheme of the traditional stand for test of locomotives traction engines.
THE PERSPECTIVE NANOMATERIALS FOR RAILWAY TRANSPORT
Authors: Mishchenko T. M. , Nosyk T. O.
Published: June 2023

The use of promising nanoconcrete and nanomaterials for needs of railway transport is offered.
THE INFLUENCE OF THE TEMPERATURE OF THE ASYNCHRONOUS TRACTION MOTOR WINDINGS ON A VALUE OF THE CRITICAL VALUES OF THE TORQUE AND THE ABSOLUTE SLIP
Authors: Napara Yu. B. , Plitchenko S. O.
Published: June 2023

The article is devoted to study of influence of the heating of asynchronous engine coils on the size of critical values of moment and absolute sliding.
THE DIAGNOSIS OF THE WHEELSET CONGESTION OF ELECTRIC ROLLING STOCK IN MOTION AND ITS IMPACT ON SUPERSTRUCTURE
Authors: Panchenko O. O.
Published: June 2023

The method of complex determination of locomotive weight and its dynamic effects on superstructure of railway track on the basis of automated measuring systems having no cargo platform devices is offered.
THE PROBLEMS OF ELECTROMAGNETIC COMPATIBILITY IN POWER SYSTEMS WITH A POWERFUL FREQUENCY CONVERTERS
Authors: Saenko Yu. L. , Baranenko T. K.
Published: June 2023

A comparative analysis of spectral composition of the output voltage and input current of frequency converters is described in this paper. An issue of choice of means of normalization of voltage quality indices in electric networks with frequency converters is also considered.
THE USE OF ABSORBING WELLS TO NEUTRALIZE CONTAMINATED AREA IN THE UNDERGROUND STREAM
Authors: Pshinko O. M. , Biliaiev M. M. , Kalashnikov I. V.
Published: June 2023

A numerical model to calculate the process of ground waters protection from pollution with the use of neutralizer has been proposed. The model is based on the 2-D equations of filtration and admixture transfer. Results of numerical experiment are presented.
METHODS OF ENVIRONMENTAL PROTECTION ON RAILWAY TRANSPORT OF UKRAINE
Authors: Loza V. H. , Kuhlivskyi S. V. , Kosenko B. Ya. , Pidskrebaev O. M.
Published: June 2023

Railway transport on its nature is friendlier to the environment as compared to motor-car and air transport modes. However it is necessary to not forget that the development of railway transport should be realized with the observance of ecological requirements. This problem is also very urgent for Ukraine, because it exceeds a lot of other countries of Central Europe on the density of railway system and its freight traffic volumes. That is why the problem of ecologization of railway transport is very important.
THE INFLUENCE OF SUPERPLASTICIZER C-3 BASED ON THE PROPERTIES OF CONCRETE MIXES AND CONCRETE
Authors: Pshinko O. M. , Afanasyeva T. I.
Published: June 2023

On the example of fine-grained concrete with addition of superplasticizer C-3 and constituents of its factions of different molecular weight the influence of molecular weight and dosage of additions on the mobility of concrete mixture and the hardening of concrete is studied.
THE CONCEPT OF STATUS IN A COMPREHENSIVE ANALYSIS OF THE STRUCTURAL INTEGRITY OF UNDERGROUND STRUCTURE
Authors: Tiutkin O. L.
Published: June 2023

In the article the theoretical positions of conception of status determination of constructions of underground structures for conducting the complex analysis are presented.
MATHEMATICAL MODELING OF EXPERIMENTS PLANNING
Authors: Bosov A. A. , Artemchuk V. V.
Published: June 2023

In the article the results of theoretical researches aimed at the mathematical design of planning the experiments are presented. The new is that planning the experiments is conducted simultaneously on three indices of quality. They are coverage-to-basis strength of adhesion, wearproofness and coverage thickness. Development of mathematical design of planning the experiment on a few indices enables decreasing a quantity and cost of experiments.
WORK OF TRUCKS AND ELECTRIC VEHICLES IN THE LOGISTICS SYSTEM
Authors: Horyainov O. M. , Alpeeva O. V.
Published: June 2023

In the article the present evaluation methods of freight transport operation are studied and a model of functioning of freight transport in the city logistic system is developed taking into account the urban electrical transport.
ROAD FREIGHT TRANSPORT IN THE CITY
Authors: Horyainov O. M. , Buhaiev Yu. V.
Published: June 2023

The paper is dealt with the issues related to the organization of traffic of truck transport in logistic system of a city. The purpose of paper is consideration of the basic problems concerning the city traffic.
THE FORMING TECHNOLOGY OF TRANSPORT SERVICES AND LOGISTICS SYSTEM
Authors: Horyainov O. M. , Olkhova M. V.
Published: June 2023

In the paper approaches to formation of transportation service are presented from positions of various authors. The formation of transportation service technology of logistical system is considered.
THE DIFFERENTIATED ASSESSMENT OF URBAN PASSENGER TRANSPORT WORK
Authors: Dolia K. V.
Published: June 2023

The up-to-date tariffs system state of the city route passenger transport is considered. The fare rate as to the current blanket one is noted not to be changing on the travel distance. Consequently, the fare doesn’t correspond to the service rate obtained by the passengers. The differentiated approach to determination of fare rate depending upon the city passenger transportation work taking into account the interests of a carrier as well as passengers is suggested.
TO THE RISK MANAGEMENT IN LOGISTICS SYSTEMS
Authors: Dolia V. K. , Lezhneva Ye. I.
Published: June 2023

The analysis of models of risk representation and estimation as applied to logistic systems at management of processes in delivery chains is conducted.
THE DURATION OF CARS DEPOSITION AND THE FACTORS THAT AFFECT IT
Authors: Zhuravel V. V.
Published: June 2023

A type of regression equations is determined, which adequately describe correlation between the error of braking of sets of cars and the factors affecting mean duration of reining in on one processed car. The solution for problem of determination of mean duration of reining in on one train depending on the weight category of cars in the stream being processed is offered.
THE OPERATIONAL PLANNING IMPROVEMENT OF FREIGHT STATION IN THE CONDITIONS OF THE FUZZY OUTPUT
Authors: Lavrukhin O. V. , Levchenko I. O.
Published: June 2023

In the article the questions of possibility of construction of mathematical model for prediction of rational quantity of wagons for fulfilling the plan of transportations on the basis of theory of fuzzy sets were considered.
TO THE QUESTION OF CHOOSING A BRAND OF PASSENGER VEHICLES TO SERVICE URBAN ROUTES IN THE CONDITIONS OF COMPETITION IN THE MARKET OF THE ROAD TRANSPORT SERVICES
Authors: Kharchenko V. F. , Vakulenko Ye. Ye.
Published: June 2023

The influence of trip conditions on the passenger functional condition is considered, it is offered to maintain vehicles on a route at crowd interior of 3 people/m2 that least tires the passenger, and due to the account of requirements of passengers the carrier obtains competitive advantages in the market of transport services.
ANALYTICAL EXAMINATION OF METHODS FOR MODELING BUSINESS PROCESSES IN E-COMMERCE
Authors: Shkil R. A.
Published: June 2023

In this article the theoretical aspects of modeling business-processes are considered, the characteristic of business modeling methods is given, their merits and demerits are determined, the comparative analysis of methods of modeling business-processes in e-commerce is performed.
THE DEFINITION OF MATERIAL DEFORMATION STRENGTHENING IN THE VOLUME OF INDIVIDUAL GRAINS OF POLYCRYSTALS
Authors: Vakulenko L. I. , Gryshchenko M. A.
Published: June 2023

The questions of microhardness estimate in changing the loading on indenter, if the same place of a sample is loaded, are considered.
THE DETERMINATION OF THE OPTIMAL STRUCTURAL STATE OF RAILWAY WHEELS
Authors: Vakulenko I. O. , Gryshchenko M. A. , Perkov O. M.
Published: June 2023

On the basis of research of modification of carbon steel structure after different thermomechanical treatments the conditions of improving the quality of railway wheels are determined.
THE EXISTING PROFITABLE FINANCIAL MODEL OF MANAGEMENT - THE MAIN CAUSE OF THE CRISIS OF THE GLOBAL ECONOMIC SYSTEM AND THE COLLAPSE OF THE FINANCIAL SYSTEM
Authors: Myamlin V. V.
Published: June 2023

Inconsistencies of existing profit-financial model of the economy are exposed. The inoperability of such a model is demonstrated. A new field of economics (called as «megaeconomics»), aimed at study of the economy with other universal processes and phenomena, is suggested. The concept of non-profitable economy is proposed. General recommendations on overcoming a crisis in the country are given.
THE ASSESSMENT OF BASIC TECHNICAL PARAMETERS OF THE COOLING SYSTEM OF THE LOCOMOTIVE DISK BRAKE
Authors: Biloborodova I. M. , Osenin Yu. I. , Sosnov I. I.
Published: June 2023

In the article a thermal (constructive) calculation of the liquid-air recuperative heat exchanger is executed. Its purpose was an estimation of the areas of heat-exchange surfaces and the consumption of heat carriers necessary for dissipation of thermal energy generated by a locomotive disk brake.
EXPERIMENTAL STUDIES OF PIVOTALLY CONNECTED CAR PLATFORM FOR LARGE-CAPACITY CONTAINERS MODEL 13-1839
Authors: Bubnov V. M. , Myamlin S. V. , Hurzhy N. L.
Published: June 2023

The work is devoted to experimental researches of pre-production model of swing-joint platform. An amount and order of conducting the preliminary tests, combinations of the test loadings are considered. The locations of setting the sensors as well as the locations of registered maximum equivalent tensions are selected. The convergence of results of tests with the results of theoretical calculations is analyzed.
THE MATHEMATICAL DESCRIPTION OF THE FORCE OF INTERACTION BETWEEN WHEELS AND RAILS
Authors: Dehtiaryova L. N. , Osenin Yu. I. , Myamlin S. V.
Published: June 2023

In the article the mathematical description of force interaction of wheels and rails is offered as well as the description of some indices of traffic safety of rail vehicles is performed.
THE IMPROVEMENT OF THE SPRING TAUS SLIPPERS
Authors: Melnychuk V. O. , Mishchenko A. A. , Savchuk O. M.
Published: June 2023

The TAUS slippers (a patent owner is the Transport Academy of Ukraine, the Eastern Center) [1] are developed for typical freight bogies of model 18-100 in order to increase up to 100…120 km/h the safe traffic speed of operation stock wagons. After a simple modernization during the depot repair of the wagon the slippers are to be reequipped into the elastic gapless TAUS ones. It allows increasing the critical wagon speed due to reducing the hunting vibrations of bogies. The paper is devoted to consideration of issues of further improvement of these slippers.
THE MODELING OF PROCESS NEUTRALIZATION OF PHOSPHORUS OXIDE IN THE ATMOSPHERE
Authors: Beliaiev M. M. , Verhun O. O. , Kovtun Yu. V.
Published: June 2023

A numerical model was used to calculate the process of toxic gas neutralization. The 2D transport model is used to simulate the process. The implicit difference scheme was used. The rsults of numerical experiment are presented.
THE USE OF AIR JETS FOR INTENSIFICATION OF THE EVAPORATION PROCESS FROM AREA OF SPILL
Authors: Biliaiev M. M. , Mashyhina P. B.
Published: June 2023

The 2D numerical model to simulate the pollutant dispersion and evaporation, when the air jet is used, was proposed. The results of numerical experiment are presented.
THE ATMOSPHERE PROTECTION FROM AN ACCIDENT WITH HAZARDOUS CHEMICAL CARGO
Authors: Lysniak V. M.
Published: June 2023

The 3D CFD model to simulate the pollutant transfer and the process of neutralization of toxic gas after accidents was developed. The model is based on the transport gradient model. The results of numerical experiments are presented.
RESOURCE-SAVING PROCESS AND RESOURCE-SAVING TECHNOLOGIES IN THE FIELD OF ECOLOGICAL TOURISM
Authors: Nikolaiev K. D. , Isaienko V. M. , Zelenko Yu. V.
Published: June 2023

Saving of resources and some resources-saving technologies, the use of which in eco-touristic sphere will bring the possibility of development with the least pressure upon the environment, are considered in this article.
THE STUDY OF STRESS-STRAIN STATE OF CONCRETE BENDING ELEMENT REINFORCED WITH CONVENTIONAL REINFORCEMENT, WITH AMENDMENTS NO. 1 TO SNIP 2.03.01-84*
Authors: Kyrpa I. I. , Pshinko P. O.
Published: June 2023

This article presents the results of experimental-and-theoretical research of stressed-and-strained state of flexible ferro-concrete structural member provided with the conventional steel reinforcement and subjected to bending as per Modification № 1 to SNiP (construction regulations) 2.03.01-84*. Concrete and ferro-concrete structural members.
THE STRUCTURE OF THE FREQUENCY EQUATIONS ROD SYSTEMS WITH DISTRIBUTED PARAMETERS
Authors: Raspopov O. S.
Published: June 2023

The graph and finite-state machine models for forming spatial vibration frequency equations with continuous parameters are used. The example of calculation of vibrations of bi-regular beam with different section characteristics is presented.
STRUCTURAL AND FUNCTIONAL ANALYSIS OF INTERMODAL SCHEME OF PASSES OIL THROUGH THE REPUBLIC OF AZERBAIJAN
Authors: Bahirov S. M. , Hasratova L. M.
Published: June 2023

In the article the structural-and-functional analysis of railway-see route Beyneu (Nebit-dag) – Aktau Turkmenbashi) – Djubendi – Poti (Batumi) – Illichivs’k (Varna) has been considered. Also the intermodal scheme of material stream of oil products has created, the analysis of technical development of Djubendi junction has been presented, and its new scheme that allows accelerating the loading operations has been offered.
MATHEMATICAL MODELING OF A TECHNICAL OBJECT DEPENDENT FAILURES
Authors: Bosov A. A. , Hryshechkina T. S. , Savchenko L. M.
Published: June 2023

Dependent failure models of technical objects on the basis of wave approach are suggested.
BALANCED PRICING MODEL BASED ON THE ANALYSIS OF THE ORDER PROFITABILITY
Authors: Kozhushkin M. E.
Published: June 2023

The mechanism of agreement process for a contract price on pipe products is offered taking into account the dates of deliveries and specificity of forming the prime price of an order. During the formation of sale cost the level of profitability of every constituent and the whole order is taken into account.
THE IMPROVEMENT OF INTERACTION TECHNOLOGY OF MINING AND METALLURGICAL COMPLEX ENTERPRISES IN THE DIRECTION OF DONBASS - KRYVBAS BY USING STRICT SCHEDULE
Authors: Papakhov O. Yu. , Logvinova N. O.
Published: June 2023

In transportation of raw materials between the enterprises of ore mining and smelting complex on the Donbas – Kryvbas direction it is used a considerable quantity of Ukrzaliznytsya’s rolling stock and private wagons of metallurgical enterprises, which stand pending the freight operations at terminals and worsen the turnout of wagons, and decrease the productivity of using them due to an idle time pending the freight operations, considerable empty run and turnout of block trains.
THE CONCEPT OF REGIONAL INNOVATION PROJECTS MANAGEMENT
Authors: Savchuk R. V.
Published: June 2023

In the paper the basic stages of a new conception of management for regional projects based upon the principles of indicative management and the decision-making models. The conception is based on the peculiarities of regional level of project management revealed by the author.
THE EFFICIENCY FORMATION MECHANISM OF THE FREIGHT TRANSPORT SYSTEM IN TERMS OF THE VARIABLE NATURE OF DEMANDS FOR TRANSPORTATION
Authors: Smyrnova O. Yu.
Published: June 2023

The mechanism of formation of efficiency of freight motor transport system in conditions of variable character of demand for freightage is developed on the basis of space-time approach development to efficiency formation for difficult systems. In the article the definitions of the notions of freight motor transport system adaptability, standard operation conditions are given.
ABOUT THE ORGANIZATION OF THE LEGAL FOUNDATIONS OF THE NEW EDITION OF THE UKRAINIAN AIR CODE
Authors: Baran R. T. , Baran L. M. , Mihdal Ye. V.
Published: June 2023

The authors’ own scientific and practical approaches to the issuing of the clauses of new Air Code of Ukraine are proposed. There are presented the conceptual basics of organization and legal regulation of the legislative instructions, which especially concern to the chapters regarding regulation of the conditions and order of use of the air space of Ukraine, organizational and economic aspects of activities of airports etc. The models of structuring the organizational subsystems for the commercial and state sectors of the air space and the forms of the organizationalandmanagerial structures, managerial methods and economical airport systems are also proposed.
THE COMPARISON OF TRANSPORT MODES WITH GIVING SUSTAINABLE DEVELOPMENT OF SOCIETY
Authors: Barash Yu. S. , Korzhenevych I. P. , Lykhopek P. O.
Published: June 2023

The external costs of different types of transport and the necessity of their account at comparison of variants are considered.
THE EVALUATION OF THE ENTERPRISES COMPETITIVENESS IN THE PERIOD OF ECONOMIC INSTABILITY
Authors: Vasylenko V. A.
Published: June 2023

Approaches to the estimation of competitiveness of an air transport company, which can be used for the improvement of economic position of the company in the conditions of financial crisis, are determined.
SOME ASPECTS OF ECONOMIC DEVELOPMENT OF UKRAINIAN RAIL TRANSPORT
Authors: Drebot Kh. V. , Snachov M. P.
Published: June 2023

The reserves of increasing the rail transport functioning efficiency in Ukraine in conditions of hard competition with other kinds of transport are considered.
THE FORMATION OF THE CORPORATE BOND MARKET IN UKRAINE WITH THE AIM OF ATTRACTING INVESTMENT AND ENTERPRISE RESOURCE
Authors: Kalambet S. V. , Miro I. M.
Published: June 2023

The domestic experience of attracting the financial resources at an enterprise is analyzed. The opportunities and restrictions re. attracting the means by public enterprises are considered. Starting from the restrictions of public enterprises re. attracting the financial resources, the recommendations on advisability of alternative forms of crediting the activities of enterprises such as internal obligation loan are developed.
THE PRIME COST OF FREIGHT TRANSPORT IN THE FORMATION OF TARIFFS IN THE INTERNATIONAL TRAFFIC
Authors: Shevchenko I. V.
Published: June 2023

The article is dedicated to the problem concerning a transport barrier in international transportation, a transport process effectiveness and expedition goods between Ukraine and others countries. This article sets up and explores such question as transport corridor and its meaning.
THE DETERMINATION OF THE LOCATION CONDITIONS OF THE TRACTION REDUCER, WHICH PROVIDE THE LOWEST LEVELS OF NOT CENTERING THE AXES OF THE ROLLING STOCK TRACTION TRANSFER
Authors: Bondaryev O. M. , Zhulai A. I. , Bondaryev O. O.
Published: June 2023

In the article the analysis of factors, which influence upon decentring values of axles of shafts of tractive engines and tractive gearheads of locomotives, is presented and the calculations to determine the conditions of allocation of mountings of tractive gearhead of the 2nd class, promoting the reduction of decentring values, are conducted.
THE EVALUATION OF STRENGTH AND DYNAMIC CHARACTERISTICS OF THE SPRING INCREASE OF PASSENGER TRUCKS
Authors: Myamlin S. V. , Zhyzhko V. V. , Prykhodko V. I. , Shkabrov O. A.
Published: June 2023

In the paper the results of calculations on determination of strength features of springs in the spring suspension of passenger coach bogies and their dynamic characteristics with the account of requirements of normative documentation are presented.
THE LIMITATIONS OF THE MODES OF UNCOUPLING BRAKING ON HUMPS
Authors: Bobrovskyi V. I. , Vernihova R. V. , Kudryashov A. V. , Yelnikova L. O.
Published: June 2023

The operating limitations of braking modes for cuts on humps are explored; a procedure of construction of region of permissible speeds for exit of cuts from the retarding positions is developed.
FUNDAMENTALS OF RADIO CONTROL OF FAULTY EQUIPMENT AND ICE REGIMES ARC ABUSES OF POWER COLLECTION
Authors: Zharkov Yu. I. , Semenov Yu. H.
Published: June 2023

The principles of construction and the structure of radio system for detecting damaged current collectors and glaze-ice regimes on arc breaking of current collection as well as the peculiarities of received radio signals and the basics of their identification are presented.
IMPROVING OF ENERGY AND OTHER INDICATORS OF RECEIVING AND ACCEPTANCE TESTING OF ELECTRIC LOCOMOTIVES TRACTION MOTORS
Authors: Loza P. O.
Published: June 2023

The methods of determination of equivalent load current in tests of electric locomotive traction engines without forced ventilation with use of the results of qualification test of engines of certain types are offered in the article.
IMPROVING THE RELIABILITY OF OPERATION OF THE CONTROL SYSTEM TRACTION POWER SUPPLY OF ELECTRIC VEHICLES BASED ON EXPERT INFORMATION WITH ACCOUNT OF THE IMPORTANCE OF INDICATORS
Authors: Matusevych O. O.
Published: June 2023

The method of system approach for increasing the reliability of controlling equipment on traction electric supply system for electric transport is proposed. This approach is based on expert information that takes into account the importance of indices. This method enables us making the expert estimation of the functioning state of controlling system, forecasting and choosing a rational variant of increasing the reliability.
THE MINIMALIZATION OF CURRENTS EARTH FAULT COMPENSATION WITH DEVICES OF CAPACITIVE COMPONENT
Authors: Mesiats Ye. P.
Published: June 2023

The efficiency of compensation of capacitor currents of single-phase short circuit on ground corresponds to a resonant, or close to it, mode of adjustment of the compensating device. In the paper the critical analysis of the most widespread methods of automatic adjustment of arc extinguishing reactors and the opportunity of their use in dynamical distributive networks is given.