bluuebunny/crossref_metadata_2025_split huggingface dataset:
Rail Transit Development Experience of World-class Multi-airport System at Abroad
Authors: Wang Yongliang , Wang Chunfeng 
Published: January 2021

Abstract
The advanced development experience of rail transit in foreign world-class multi-airport systems is studied and refined. Based on the fact that China’s world-class multi-airport systems will consolidate the development pattern of rail transit as the backbone distribution mode, and based on the perspective of spatial structure and traffic mode of foreign world-class urban agglomerations, the Pacific coast multi-airport system of Japan, the northwest European multi-airport system and the London multi-airport system of Britain are selected as objects of reference for rail transit development experience. Systematically sorting out the current situation of rail transit development of the selected world-class multi-airport systems, from the point of view of development model, hub level, integrated hub, interconnection, true service and so on, this paper studies and summarizes the beneficial enlightenment which is helpful to the development of rail transit of world-class multi-airport systems in our country.
Research on bolt connection of steel-wood structure based on numerical simulation test
Authors: Zheng Yang 
Published: January 2021

Abstract
Compared with other connection methods, bolt connection has the advantages of simple structure, diverse types, reliable connection, convenient assembly and disassembly, and low cost. The test design scheme adopted in this paper is as follows: the index parameters to clearly measure the safety of steel-wood structure are bolted connection and wood type, and the load-displacement curve, stress analysis and bearing capacity under these two factors are explored.
Optimal Planning of Multiple Sources Included Energy Internet near User Side Based on Energy Router
Authors: Sang Zi-xia , Yu Yi , Huang Jia-qi , Wang Si-cong , He Ji-feng , Yan Jiong , Fang Reng-cun 
Published: January 2021

Abstract
Because of the situations that the interconnection among multi distributed energy system (DES) and interaction among electric, heating and cooling system are not given full consideration, optimal planning of energy internet near user side based on bi-level programming is studied in this paper. First, schematic structure along with mathematic models of each unit is proposed and load characteristic is analyzed. Considering the interconnection of multiple energy as well as multiple distributed system and the combined dispatch of multi energy flow, a bi-level programming model is then presented. The minimum of total annual cost is the objective of upper model whose decision variables are the capacity of each energy unit and minimum annual operating cost is the lower model’s objective whose decision variables are the output of all energy units. Then, the elitist strategy genetic algorithm is employed to solve the upper model, and branch and bound algorithm is applied to optimizing lower model. The simulation results indicate that the proposed planning method of energy internet is effective, multiple energy flow interaction and multiple energy router interconnection are more economic than traditional combined cooling heating and electricity (CCHP) and can alleviate the mismatch of heat-to-electricity ratio between gas turbine and loads, and the multiple energy networks by which DES are interconnected contributes to higher economic benefits than single electric or heating network.
Analysis and Research on the maturity of electricity retail market
Authors: Ying Zhiwei , Yu Tao , Huang Yupeng , Liu Dunnan , Li Tengjian 
Published: January 2021

Abstract
On the basis of interpreting the policy of “new electricity reform”, this paper defines the maturity level of electricity sales market after new electricity reform in China from five dimensions: potential market, emerging market, initial development market, semi-mature market and mature market. With the development of electricity sales market, the evaluation methods of customer resource value are gradually improved, and different maturity periods of electricity sales market have different influences on customer value evaluation.
Annular Gas and Drillstring’s Transverse Amplitude
Authors: Wang Chaofei , Shi Jiangang , Xi Chuanming , Chu Hengzhi , Zhu Zhongxi 
Published: January 2021

Abstract
In drilling construction, drill string’s transverse vibration greatly improves the drill risk and complexity. Drill string is in buckling will lead it in transverse vibration, at the same time, when gas invasion appears into annular, drill string vibration will be intensified, which will create severe fatigue breakdown to drill string and improve the drill complexity. This paper has established a two-dimensional fluid-structure coupling model by CFD software to research the effect annular gas on drill string’s transverse vibration and explore the function relation between gas volume and drill string transverse amplitude. The modelling is established in static vertical interval, 1m drill string, and set the gas column length range from 88.9mm to 226.7mm to explore the law of the annular air in different well depth and transverse vibration of drill string. It can be used to predict the maximum amplitude which created by gas flowing out, so as to judge whether drill string will touch the well wall and vibrate.
Adaptive Frequency Shift Islanding Detection Method Based on dq Transformation
Authors: Man Li , Gusheng Chen , Ying Gao 
Published: January 2021

Abstract
The principle of adaptive frequency shift islanding detection method is analyzed. On this basis, adaptive frequency shift based on dq transformation which aim at three phase inverter grid-connecting system is presented, and the simulation by MATLAB is fulfilled. Verified by the simulation, this method can precisely detect the occurrence of islanding. At the same time, the superiority of the new method is verified.
Research on urban canal renewal from the perspective of Landscape Urbanism——Take the weigong channel as an example
Authors: Kang Kuo , Wan Rong 
Published: January 2021

Abstract
Under the background of rapid urbanization, a series of problems have arisen in some areas, such as the shortage of land resources, the backwardness of landscape construction and the decline of urban vitality. As the basic water conservancy facilities of the city, the transformation of the urban canal can effectively promote the intensive use of urban land and urban ecological environment, and improve the vitality of urban public space. This paper first summarizes the main theories and practices of landscape urbanism through literature review, and emphasizes the importance of “landscape infrastructure” in the strategic level. Finally, the strategies and methods of Landscape Urbanism in urban canal renewal are discussed based on the case of open channel renewal.
Study of frosting diagnosis with Back Propagation network and Elman network
Authors: Han Siyu , Shen Jiang , Hu Kaiyong , Zhu Jingyu , Liu Xinghua , Zhu Tingting , Zhang Dequan 
Published: January 2021

Abstract
Frosting diagnosis is important in refrigeration system control. This paper focuses on frosting diagnosis in a single-stage vapor compression refrigeration system. According to the reduction of refrigerating capacity, the experimental data of frosting can be divided into three categories: light, moderate and severe frosting. Then, two frosting prediction models are established with Back Propagation neural network (BPNN) model and Elman neural network (ENN) model. The simulation results illustrate that the overall diagnostic performance of the ENN is better than that of BPNN. The mean squared error (MSE) should be paid more attention for affecting the accuracy of models. The presented method in this paper can provide technical reference for frosting prediction.
Modeling of bioenergy impact on food security of EU countries
Authors: Panukhnyk O , Hryhoruk I , Popadynets N , Khymych H , Fedotova Ya 
Published: January 2021

Abstract
Ensuring the energy and food independence of each state will not only remain important but that its importance will continue to grow given the constant need for the state to properly guarantee the basic needs of the population. However, the rapid development of bioenergy is a potential precondition for the fuel and food conflict over agricultural raw materials. The article examines the relationship between food safety indices and the overall share of energy from renewable sources and bioenergy production in 3 European countries. The main factors characterizing the food security of these countries for the period from 2012 to 2018 are identified. Statistical methods of correlation analysis are used to determine the links between the outlined factors. It is studied that in most countries the prosperity of the bioenergy sector of agricultural enterprises does not affect the main indices of food security. In 5 countries (Poland, Germany, Norway, Spain, the Czech Republic) correlations were found, but for the most part, they are direct. It means that large values of one variable are associated with large values of the other, in other words with increasing the share of bioenergy production and overall share of energy from renewable sources, food safety indices also increase.
Investigation into International Innovative Management of Creating and Producing Electric Cars
Authors: Kharin S , Xamidov O , Purij G , Padalka O , Sheludiakova N 
Published: January 2021

Abstract
The research paper provides an insight into various aspects of producing electric vehicles in leading foreign countries. Dynamics of increasing specific weight of electric vehicles in the total volume of transport and its predictive indices are under study considering the countries planning their full transition to electric mobility. Topicality of building a wide network of charging stations of various capacity is highlighted. It is indicated that the German Volkswagen, the world largest automobile concern, is going to introduce more new makes of electric vehicles than it was planned before – 70 instead of 50 by 2028. In the coming decade, there will be a trend of raising the number of Volkswagen electric vehicles from 15m to 22m. With that, the share of electric vehicles in the total production is planned to exceed 40%. It is indicated that VW is going to invest 44B euros in designing new equipment. It is mentioned that in many foreign countries, subsidies and tax allowances for electric car owners are essential stimuli from the state. Besides, special attention is paid to improving and developing production of batteries for electric vehicles, in particular in the EU countries. The article suggests outlines of designing electric-mobile innovations and power supply providing sustainable and economically substantiated production of primary power by using wind-generators. Possible production of Ukrainian and Uzbek electric vehicles is under analysis. It is highlighted that production of electric vehicles allows combining two very profitable economic factors – innovative character and mass production. Here, novelty, great demand and scale economy will produce a desirable effect. The authors consider influence of COVID-19 on the global economy and various types of vehicles.
The Development Of Renewable Energy In The Context Of Formation Of Innovative Economy And Energy Independence As The Geopolitical Priorities Of The State
Authors: Liutak O. , Baula O. , Poruchnyk A. , Stoliarchuk Ya. , Kravchuk P. , Kostynets Iu. 
Published: January 2021

Abstract
Due to the deepening imbalances in the development of world energy and the uneven distribution of traditional energy resources, countries are forced to apply innovative forms and methods of radical changes in the structure of energy consumption. The formation of energy independence is based on the use of the innovative potential of the economy and the introduction of renewable energy sources. The econometric analysis showed a high level of influence of energy consumption based on wind and solar energy, the share of energy supplies from renewable sources, imports of mineral fuel, oil and its distillation products, financing of innovative activities of industrial enterprises on the country’s GDP in a multifactor model. The implementation of innovative restructuring of the energy sector will reduce the level of energy intensity of GDP, increase the share of energy derived from renewable energy sources and reduce the consumption of traditional energy resources, which will provide an appropriate level of energy independence. The assimilation of complex world-class innovations in the field of energy determine the criteria of energy efficiency, encourage the active implementation of such measures, through which it is possible to predict the results of further scientific and practical search.
Sustainable development of forest recreation management as a basis for environmental safety
Authors: Horal Liliana , Khvostina Inesa , Shyiko Vira , Radin Michael , Korol Svitlana , Panevnyk Tetiana 
Published: January 2021

Abstract
The article examines the determinants of the concept of forest recreation management. Based on a critical analysis of scientific works on the study of the component composition of recreational forest use, three components have been identified, namely: recreational resources, recreational facilities, recreational activities. Four key components of recreational forest use have been identified: resource, social, economic, innovation and investment. The main indicators of the development of forest recreation management taking into account the component distribution have been investigated. A model for determining the overall efficiency of recreational forest use by taking into account the efficiency of each selected component is proposed. Usage of Excel is suggested to predict the level of recreational forest use.
Efficiency evaluation of using highly mineralized reservoir waters for preventing hydrate formation of natural gas in the conditions of Zakhidno-Radchenkivske gas-condensate field
Authors: Dmytrenko V , Zezekalo I , Vynnykov Yu , Manhura A 
Published: January 2021

Abstract
A comparative analysis of hydrate formation inhibitors of different types: thermodynamic, anti-agglomerate, kinetic action was performed. The advantages and disadvantages of each class of reagents are considered. The possibility of using highly mineralized reservoir waters to prevent hydrate formation in gas condensate fields is proposed. Laboratory studies were conducted to determine the decrease in equilibrium temperature in the presence of reservoir water of the well 202 of Zakhidno-Radchenkivske gas-condensate field. Experimental determination of the equilibrium parameters of the hydrates formation of technical propane for the studied formation water showed that the value of ΔT is higher than predicted. This paradoxical effect can be explained by the multicomponent combination of formation water and, probably, the synergistic action of its micro-and macro components. The results of the calculation of the antihydrate properties of the reservoir water of Zakhidno-Radchenkivske gas-condensate field are presented. The results of industrial tests of using reservoir waters for the prevention of hydrate formation in the gas preparation system at Zakhidno-Radchenkivske gas-condensate field are presented. The results of industrial tests confirmed the effectiveness of the formation of reservoir water to prevent the formation of hydrates: hydrate formation in the well and on complex gas treatment unit was not detected. In addition, due to the use of well production, the cost of preparing gas for transportation has been significantly reduced. The article substantiates the possibility of using formation waters of oil and gas fields of the south-eastern part of the Dnieper-Donetsk basin as an inhibitor of hydrate formation.
Information system for assessing environmental-economic regional development based on factor analysis and expert evaluations
Authors: Pursky O. , Kiv A. , Dubovyk T. , Buchatska I. , Danylchuk H. 
Published: January 2021

Abstract
This paper presents the results of the development of an information system for assessing environmental-economic regional development based on the joint using the factor analysis and expert evaluations. As tools for the implementation of the Web-application were selected: database MySQL and the software part Microsoft Silverlight. Software implementation of the method of calculating integrated indicators of environmental-economic development is carried out in the C # programming language. The Web-application is designed to work with three groups of users (administrators, data editors and regular users) and provides access to controls depending on the level of access of a particular user. The developed information system allows analyzing regional development, identifying the causes of positive and negative trends, determining the list of the most important environmental and economic indicators to focus on and build regional development strategies.
Optimization of the cold supply chain logistics network with an environmental dimension
Authors: Matskul V , Kovalyov A , Saiensus M 
Published: January 2021

Abstract
This article is the result of generalizing a real practical problem of optimizing the operation of a cold supply logistics network. A small (up to 100 clients) logistics company solves the problem of operational planning: during the working day (fixed time window) to provide the supply of cold (food) products from distribution centers to end consumers along well-defined routes (i.e., the logistic network graph is fixed). The company has set the following conditions for the authors. In addition to minimizing the usual transport costs, take into account also the environmental costs (associated with negative consequences for the environment) that arise during the operation of the logistics supply network. And also when deciding to use software available to the company. The case is considered when the transport tariff on each route is a linearly increasing function of the total volume of all traffic on this route. When the Nash equilibrium conditions are met, the mathematical model for optimizing the total costs of the logistics network is reduced to a convex (quadratic) programming problem. Computer implementation in MS Excel environment has been carried out. This makes it possible to carry out simulation calculations for various options for transport costs on routes, taking into account environmental costs.
Environmental management in small and medium-sized enterprises of oil and gas industry
Authors: Sheydai T , Nykyforuk O , Berezhnytska U , Melnychuk I , Mandryk I 
Published: January 2021

Abstract
The correct organization of environmental management is essential for oil and gas enterprises provide improving the efficiency of their activity. This is vital for small and medium-sized enterprises (SMEs), which are the driving force behind the economies of highly developed countries. There was a passive form of environmental policy in many developing countries, the influence to environment was not been taken into account, the existing methods in the field of environmental safety management were not been effective enough. The investigation toward the environmental management in oil and gas industry enterprises of Azerbaijan was provided and comparing the results with Ukraine. The article also includes the institutional barriers in SMEs development, which negatively affect for environmental management. The results define the main areas for improving environmental management in oil and gas industry, in particular taxation mechanism.
Experimental management of ecological security of territorial facilities for forecasting the developing economy dynamics
Authors: Perevozova Iryna , Horal Liliana , Daliak Nadiia , Karlova Olena , Chekmasova Irina , Shyiko Vira 
Published: January 2021

Abstract
The article presents the essence of the environmental safety management system of territorial objects as a set of actions and processes aimed at planning and constructing optimal options for spatio-temporal structural and functional organization of ecosystems, restoration and enhancement of their ecological potential and sustainability, prevention and development of environmental risks. The structural blocks of the system are: environmental audit, environmental design (planning), environmental monitoring, databases and data banks using GIS technologies. An important role in the management system of environmental safety of territorial objects belongs to the implementation of the concept of ecosystem services. It is based on the need for coevolutionary development of environmental and economic components. The space of possibilities for admissible variants of the future in the form of a scenario funnel within which alternative lines of development are investigated in scenarios The regional aspect of practical significance of ecosystem services is presented by adjustment of gross accumulations of fixed capital is investigated.
Model of sectoral competitiveness index by environmental component
Authors: Shmygol Nadiia , Solovyov Oleksii , Kasianok Maja , Cherniavska Olena , Pawliszczy Dariusz 
Published: January 2021

Abstract
Despite the wide range of scientific research on the subject and their actuality, there is no generally accepted concept of competitiveness today. In summarizing and generalizing different viewpoints, competitiveness will be understood as many sustainable advantages of a research object compared to its external environment. The scientific novelty of this work is the development of a model of the sectoral index of competitiveness by environmental component, which allows to carry out a comparative analysis of types of economic activity and to develop programs for the development of sectors taking into account anthropogenic impact.
Sustainable development of environment in the tourism destination areas: tourists’ perception of the issue
Authors: Zakharchenko P. , Kostenko G. , Zhvanenko S. , Mukhin V. 
Published: January 2021

AbstractThis article considers the role of the sustainable development concept in the tourism destination areas. The existing of tourism gives many benefits to such areas, but it also causes and aggravates the environment problems, leading to the degradation of natural capital. To deal with these problems, modern science suggests to implement sustainable initiatives in the regions, making their infrastructure more sustainable. It was shown that it is the responsibility of business and a local government to bring the green projects to life, but there is need to take into account the tourists’ interests. The tourists’ awareness of the sustainability concept and their demand for the sustainable products have been studied. The main goals of this paper are to look at the current state of the dealing with the issue and to outline goals for the future researches in this field. It was found that there is significant demand for sustainable and environmentally friendly tourism and implementing it on the tourism destination areas will help to gain the advantages in the long run.