bluuebunny/crossref_metadata_2025_split huggingface dataset:
Formulation of the Problem of Maximum Clique Determination in Non-Oriented Graphs
Authors: V. Listrovoy S. , V. Golovko O. , M. Butenko V. , V. Ushakov M. , . . 
Published: April 2019

In the train traffic organization, large amount of information should be processed in real time. Thereby in complicated dispatching systems, rational use of resources is needed. To perform this work a model of a management system is constructed and it is represented as a sparse graph. Further optimization of the model requires solving the Maximum Clique Problem (MCP) for the less time than the exponential time. This article contains two procedures for solving the task for subexponential time. Procedure B accurately estimates the size of the maximum clique in the graph and performs the sorting of the vertices, in such a way that the vertices that are not exactly in the maximum clique can be rejected. Procedure A, in fact, finds cliques of the maximum size in a given graph, using the procedure B. The main advantage of this method is that using it is expedient in real time for sufficiently large graphs, which in turn is important for the construction of control systems.Â Â
Carrying Out Energy Audits to Determine Measures to Save Energy Resources
Authors: Vasilenko O. , Shkrehal O. , Kletska O. , Onyshchenko A. , Voznenko S. 
Published: April 2019

It is important for a modern consumer of thermal energy to know and be able to reduce the consumption of thermal energy, for which purpose an energy audit should be conducted. Today, three types of energy audit of residential buildings are used in Ukraine. The first one is development of the energy performance certificate of the building. The obtained energy performance certificate will give an idea of the level of thermal losses of the building and identify the main areas where measures to reduce the consumption of energy resources should be taken. The second method involves carrying out experimental studies to determine the class of air permeability of enclosing structures, which also makes it possible to assess the level of heat losses of the building and the condition of the ventilation system of the building. The third type of energy audit involves carrying out thermal imaging of the building envelope for the subsequent analysis of infrared images. A methodological approach has been developed for processing multiple infrared images. An energy inspection of a residential house has been conducted on the basis of which an energy performance certificate was compiled. The premises of the residential building have been tested for air permeability. Considering the main types of energy audit, its advantages and disadvantages have been determined both for the consumer and for the employees who conduct the audit.Â Â
Energy Efficiency of Binder Application in Concrete
Authors: Vinnichenko Varvara , Ryazanov Alexander 
Published: April 2019

Theoretical calculation of the thermal effect of formation of minerals of binders is carried out. The dependence allowing calculating the thermal effect of formation of minerals of lime, gypsum, slag cement, portland cement, dolomite cement is presented. The formula also takes into account the effect of organic components in the mixture. A comparative analysis of the energy efficiency of different types of binder in concrete is carried out. It is shown that the use of slag cement in the production of concrete mix is twice as effective as portland cement. This is due to the presence in the slag of calcium oxide, which does not need energy to carry out the endothermic decarbonization reaction. Lime in the concrete composition has a rate of energy consumption is five times greater. This means, industrial waste which contains calcium oxide (slag, ash and others) can replace natural materials with high efficiency.Â Â
Institutional Support of the Renewable Energy Industry in Ukraine
Authors: Nataliia Riazanova , . . 
Published: April 2019

The article considers the institutional aspect of the renewable power industry development in Ukraine as a complex of formal and informal institutions, certain rules that actively influence the development and implementation of technologies. The development of the renewable energy industry through institutional transformations should be at the highest hierarchical level. The factors hindering the development of renewable energy sources (RES) are highlighted and systematized. In order to eliminate these factors, significant institutional changes that can not be carried out outside targeted state policies are needed, including financial support for the industry, the elimination of regulatory barriers, and the formation of demand for equipment by the strengthening of environmental norms and other tools for stimulating the development of renewable energy power industry and coordination of energy market participants. Key segments that influence the development of RES are formulated. Certain institutional transformations are needed for qualitative development of renewable energy power industry in Ukraine. Necessary institutional changes in energy supply, and now the state needs to systematize and harmonize the RES-policy. Institutional transformations are reduced to the problems of the development of renewable energy power industry in Ukraine, the ways of their solution are determined. The actions of economic entities in the economic space with the distribution (regulation) of each of them for the stable functioning of the system, which are the basis of the institutional relationship of renewable energy sources in Ukraine for the purpose of energy saving, are presented.Â Â
Increasing the Traction Properties of Locomotives for the Account of Improvement of Body and Bogies Connexions
Authors: Gerlici Juraj , Kravchenko Kateryna , Gorbunov Mykola , Lack Tomas 
Published: April 2019

The article presents the results of a research of the reserves for the realization of tractive and braking forces of a rail vehicle. Two target functions have been developed that show the evaluation of the design and identify opportunities to increase the efficiency of using the locomotive. On the basis of the objective functions, technical solutions have been proposed and patented in the crew part of the locomotive. The analysis of the factors that affect the traction and coupling qualities of the locomotive was carried out. A mathematical modeling of the starting from the place of the shunting locomotive TEM103 was carried out. The redistribution of loads from wheel pairs to rails is shown depending on the speed. The change in the wheel-rail contact area when the load of the shunting locomotive TEM103 changes is estimated. The work of the proposed finish loading device in different modes of operation is described. Efficiency of work is shown.Â Â
Specifics of Participation of Industrial Companies of the Railway Transport in Ukraine in Functioning of Innovation-Oriented Industrial Logistic Clusters
Authors: Dikan Olena , Polyakova Olena , Ustenko Marina , Shramenko Olena , Rekun Anna 
Published: April 2019

The article reveals the specifics of participation of industrial companies of the railway transport of Ukraine in the process of functioning of innovation-oriented industrial logistic clusters. The interpretation of the concept of a cluster and definition of its main components has been studied. The problems and prospects of development of industrial companies of railway transport of Ukraine have been studied. It has been determined that the new model of economic development of industrial companies of the railway industry should be based on interaction of all the participants involved at all stages of the life cycle of creating innovative products by forming innovation-oriented industrial-logistic clusters. It has been noted that innovation engineering centers that initiate and develop innovations and coordinate the entire innovative process of product creation are the core of innovation-oriented industrial logistic clusters.The main problems that hinder the use of the cluster approach in management of regional systems in Ukraine have been revealed and active participation of the state in creation of conditions for development of innovations, cooperation of the state, science and business and creation of the national innovation infrastructure has been justified.Â Â
The Strategic Framework of Cost Management for Production Competitiveness: World Experience
Authors: Dubovaya Valentina , Komelina Anna , Hassan Ismail Shamila 
Published: April 2019

Purpose of the article is to analyze the concept of production competitiveness and develop framework of cost management. A variety of cost management techniques requires the identification of their relationship with the requirements of operations management. Identified seven key concepts of operations management, analyzed their essence, information requirements. Systematized cost management techniques accordance with modern concepts of operations management such as: standart-costing, break-even analysis, direct-costing, life-cycle costing, target costing, value analysis, functional analysis, activity-based costing, sensitivity analysis, JIT-costing, kaizen costing, activity-based cost management, value-chain analysis. The aim of the article is the establishment relevance of costing methods with the key concepts of operations management companies.Â Â
Development of the Viable System Model of Partner Relationship Management of the Company
Authors: Fedotova Iryna , Shynkarenko Volodymyr , Kryvoruchko Oksana 
Published: April 2019

This paper considers the main instruments for relationship management between the company and different partners. The purpose of the study is to improve the theoretical foundations of the development of a system of total relationship management of the company with the main groups of interaction actors, taking into account relationships with all groups of partners of the company. The model of the relationship management system of the company on the basis of methodical apparatus of cybernetic modeling of viable systems is proposed. The model of the relationship management system of the company is presented as an entity (a metasystem) and an object of management (operating element), which is proposed in the form of relationship management processes with main groups of partners. The system of inter-company interactions, which reflects the development of individual relationship with a certain partner, is presented. Based on the structural-level and metasystem approaches, key levels and structure of enterprise relationships are identified. Five levels of relationship between the company and its partners â€“ element, component, subsystem, system-wide, and metasystem levels are identified. These levels are presented in the form of recursive structure of the viable model of relationship management system of the enterprise.Â Â
Modern (Financial and Innovative) Formation Determinants of Enterprise Logistics Management Under the Influence of Global Challenges
Authors: Komelina Olha , Komelina Anna , Galinska Tatyana , Ashyru Ismayli Kashasira 
Published: April 2019

A methodological approach is developed in the construction of enterprise logistics management and its business processes. It is substantiated that under current conditions the effectiveness of the formation of the enterprise's logistics system of determines the influence of innovative and financial determinants. The expediency of taking into account the influence of the risks group on the development of the enterprise and its logistical system, which arise in conditions of increasing global challenges and accompanied by changes in the national environment, is substantiated. The content of innovative financial management that takes into account the peculiarities of the logistics system of the enterprise, provides for the optimal way of financial flows, is based on the concept of the value chain, allows to model the chain of activity of the enterprise and manage it for the purpose of supplying a product or service to the market.Â Â
Quality Management of Transport Services: Concept, System Approach, Models of Implementation
Authors: Ðšryvoruchko Oksana , Shynkarenko Vladimir , Popova Nadezhda 
Published: April 2019

The article proposes a conceptual approach to transport services quality management. It is based on the principles of logistical management, management of relationships with consumers, harmonization of the enterprise management system based on the quality and the use of principles of a synergetic systemic approach. The synergetic systemic approach presupposes the formation of a self-organizing quality management system for transport services (cybernetic adaptive, in which the accumulation of experience, the memorization and structuring of information is expressed in a change in the structure of the system and the level of its organization). The scientific novelty of the proposed approach to transport services quality management consists in the integration of the principles of the TQM concept and logistics, the application of a variable approach to selecting technologies for improving the processes of transport and logistics services; comparison of consumer assessment of motor transport services with an evaluation of the quality of processes of its formation. The proposed methodological approach to evaluation takes into account the influence of integrated processes on the final result formation, as well as the effectiveness of each process execution. The implementation of this approach will provide a reasonable choice of methods for providing and improving the quality of transport services, the effectiveness of creating/improving the management system.Â Â
Application of the Sequential Control for Increasing Competitiveness of Agricultural Products
Authors: Puzik Vladimir , Puzik Ludmila , Lyubymova Nina , Pankova Oksana , Sakhatsky Vitalyi 
Published: April 2019

The competitiveness of agricultural enterprises on the international market depends directly on the professional and timely implementation of decisions of control. Its function stipulates for a number of actions, work out methods and tools which aimed at conservation the quality of agricultural products in the period of its storage and transportation in accordance with the consumerâ€™s requirements.Construction of control by a recycling pattern is one of the practical ways to increase the effectiveness of control, when an object that is recognized as fit is subject to repeated checks. The major tasks in the construction of a statistical model of measurement control have been analyzed, a typical monitoring system, a sequential control structure, and its characteristics have been submitted. The suggested control significantly reduces the reject rate in the total mass of products.The obtained result of analytical dependencies is convenient for engineering calculations of other types of numerical control.An example of the application of sequential control of broccoli cabbage in its storage with helping with antiseptic preparations is given. The influence of various antiseptics on different varieties of broccoli cabbage is considered. Such a study helps the manufacturer find the best opportunities to improve the competitiveness of its products.Â Â
Benchmarking of the Transport Market with Hierarchical Clustering of Rail Companies
Authors: I.Zorina O , V.Neskuba T , M.Mkrtychyan O , A.Volokhov V 
Published: April 2019

The article deals with the hierarchical clustering of operating rail national companies as the main stage of the benchmarking of Europeâ€™s rail transport market, which was proposed for the first time. It was established that at Euro integration the results of taxonomy make it possible to determine efficient areas of cooperation and provide a sufficient competitive level in the rail industry both for European counties and Ukraine. And an optimal criterion for cluster analysis, as was established, is the efficiency indices. Hence, the basic result in hierarchical clustering is division of rail companies into groups with similar performance characteristics. It will allow revealing the main competitors in the industry for each company on the basis of technical, geographic and economic conditions in a particular country. Detailed research of clusters with the k-means method made it possible to obtain more detailed information on characteristics of division and influence of factors on clusters. For accurate identification of characteristics for each cluster a single-factor dispersion analysis was performed. The analysis established the average value of an indicator for the clusters, standard deflection, maximal and minimal values. This information is required for development of the priority areas to improve the operating efficiency and ensure a sufficient competitive level in the rail industry of the EU countries.Â Â
The Financial Aspects of Innovative Development of the Railway Transport in Ukraine
Authors: Kravchenko Olha , . . 
Published: April 2019

The implementation of the strategy of re-industrialization of national economies is now the main trend in both Europe and Asia. In this context, railways are of great importance, as a mode of transport, capable of carrying large volumes of cargo and passengers with a sufficiently high speed. Special attention is paid to the innovative development of transport corridors connecting Europe and Asia to a single transport network. Mainly this paper is devoted to the financial aspects of the development of Ukrainian railway infrastructure, which has a significant transit potential. It is shown that underfunding of renewal of fixed assets of railways leads not only to the intensification of current problems, but to the formation of problems that will have a decisive influence in the future. The high cost of projects related to the innovative development of the railway infrastructure necessitates the attraction of private capital. The types of public-private partnership models as a mechanism for investment financing are considered. It has been determined that for the railway transport the most feasible are the BOT (build-operate-transfer) and BOOT (builtâ€“ownâ€“operateâ€“transfer) models, which allow to ensure the innovative development of strategic infrastructure sites and maintain its integrity, by keeping it in state ownership.Â Â
Financial and Economic Stability of Railway Sector in the Context of Globalization and Integration
Authors: Steshenko Olena , Masalygina Viktoriia , Salenko Olena 
Published: April 2019

This paper is dedicated to the study of financial and economic security of the railway sector in the context of globalization and integration through the example of PJSC Ukrzaliznytsia. The study covers theoretical and methodological approaches to identification of criterion for assessment of financial and economic security of the railway sector.It provides the proof of the increasing competition, diversity of internal and external risks and uncertainty in conditions of contemporary integration processes. The paper offers the cause-and-effect analysis through the â€œTree of Problemsâ€. Key indicators of financial and economic security of the railway enterprises are singled out of the overall system of threats (risks). Each indicator is assessed for impact on the overall value of the Pareto-efficient integral risk and the equation for calculation of the integrated risk value is formulated.Findings of the study confirm that monitoring of the existing and potential threats determines the operating and prognostic goals of functioning of the financial and economic security, which allows to formulate the relevant mechanisms and tools for the attainment thereof.Â Â
Organization of Financial Reporting in Accordance with Requirements of the IFRS Taxonomy
Authors: V. Сhebanova N. , I. Yefimenko T. , M.  Orlova V. , N. Korolova N. 
Published: April 2019

The authors of the article exposed the methodical questions of introduction, new for the registration process of Ukraine of the phenomenon. It is taxonomy of the financial reporting (ТFR). At the same time continued consideration of questions of the use of the financial reporting for the acceptance of administrative decisions.Essence of ТFR is exposed in the context of classification and systematization of ingredients of the financial reporting. It in itself informative system and connections between the constituents of such system. Authors suggested to attribute ТFR to the mathematical determined models. The construction of such models requires the clear plan of actions in three steps: a mathematical model - an algorithm of calculation - computer program. The purpose of researches: of one times to prove that introducing in economic science of exact knowledge, enables to limit the intuitional acceptance of administrative decisions and extend the limits of application of rational methods. It will be realized on condition of the use of different methods, methods and approaches - from nonlinear, stochastic models to the modern programming languages .
Comparative Study on Structural, Electrical Transport and Magnetic Properties of Cr-Doped in Charge-Ordered Pr0.75Na0.25Mn1-Xcrxo3 and Nd0.75Na0.25Mn1-Ycryo3 Manganites
Authors: Zawawi Rabiatul Adawiyah , Khairulzaman Nurul Nasuha , Shamsuddin Suhadir , Ibrahim Norazila 
Published: April 2019

Cr doping in charge-ordered Pr0.75Na0.25Mn1-xCrxO3 and Nd0.75Na0.25Mn1-yCryO3 have been synthesized using conventional solid-state method to investigate its effect on structural, electrical transport and magnetic properties. X-ray diffraction (XRD) analysis for both compounds showed that the samples were crystallized in an orthorhombic structure with Pnma group. The unit cell volume valueÂ Â Â Â Â decrease as the Cr-doped increased indicating the possibility of Mn3+ ion was replaced by Cr3+ due to the different of ionic radius. The temperature dependence of electrical resistivity showed an insulating behavior down to the lower temperature the both parent compound (x = 0 and y = 0). Successive substitution of Cr at Mn-site in Pr0.75Na0.25Mn1-xCrxO3 manganites induced the metal-insulator (MI) transition temperature around TMI~120 K and TMI~122 K for x = 0.02 and x = 0.04 samples respectively suggestively due to the enhancement of double-exchange (DE) mechanism as a result of suppress the CO state. Analysis of resistivity data of dlnÏ/dT-1 vs. T in Nd0.75Na0.25Mn1-yCryO3 manganite, showed a peak around 210 K and 160 K for y = 0 and 0.02 samples respectively while no peak was observed for y = 0.05 sample indicate the charge-ordered (CO) weakened. AC susceptibility, Ï‡â€™ measurements in Pr0.75Na0.25Mn1-xCrxO3 exhibits paramagnetic to ferromagnetic-like with curie temperature, TC increases from 132 K for x = 0.02 to 141 K for x = 0.04 with Cr content indicate the suppression of CO state meanwhile in Nd0.75Na0.25Mn1-yCryO3 showed paramagnetic to anti-ferromagnetic transition as Neel temperature TN increases from 115 K for y = 0.02 to 125 K for y = 0.05.
Preliminary Observations of Zooplankton in Pulau Tinggi, Marine Park, Johor, Malaysia
Authors: Shuaib Nasir , Mohammad Maryati , Peralta Hazel Monica Matias- , Rusiman Mohd Saifullah , Sanusi Shuaibu Babaji 
Published: April 2019

Zooplankton was studied in Pulau Tinggi, Marine Park, Johor, Malaysia for their abundance and species diversity. Water samples were collected within three months, April, June and October 2015.Ten sampling stations were established during the study period. A total of 54 species of copepods from 29 genera and 22 families were identified. An average of 86.70 % copepods and 15.84% non-copepods were recorded among the zooplankton groups. The water quality parameters such as depth, dissolved oxygen, pH, temperature, turbidity, and salinity were measured in situ.Â The present study was taken to observe the abundance and diversity of zooplankton in Pulau Tinggi, Johor. This research will be helpful for fisheries authorities and marine controlling departments. The effect of different physico-chemical parameters on the biomass and density of zooplankton will be discussed in the coming paper.