scholarly journals Methodical Approach to Organisation of Transportation on Electric Bus Routes

2021 ◽  
Vol 18 (5) ◽  
pp. 152-170
Author(s):  
M. A. Kudryshov ◽  
A. V. Prokopenkov ◽  
R. S. Ayriev
Keyword(s):  
Methodological Approach ◽  
Economic Assessment ◽  
Operating Conditions ◽  
Primary Analysis ◽  
Passenger Traffic ◽  
Electric Bus ◽  
Methodical Approach ◽  
Transit Capacity ◽  
Electric Traction ◽  
Charging Stations

When developing projects for introduction of electric buses into operation and determining the required infrastructure, it is necessary to justify the concept and methodological approaches to choosing of routes, to estimate the number of charging stations, depending on their type, and to conduct economic assessment of the proposed solutions in specific operating conditions.The article discusses the main issues of organising operation of buses with electric traction (electric buses) on the routes of public urban surface transport. A primary analysis of both current and prospective electric bus routes was carried out regarding the city of Moscow.Adaptive calculation methods are proposed based on classical methods for determining the required number of vehicles for a route regarding a given transit capacity, passenger traffic flow, and a given traffic interval.The current and prospective schemes for location of charging stations are considered, a method for determining their required number is proposed.A methodological approach of determining direct costs associated with transportation has been adapted to operation of electric buses on the route.

scholarly journals On the Issue of Regulatory Support for Passenger Electric Vehicles Operation

2020 ◽  
Vol 18 (1) ◽  
pp. 196-211
Author(s):  
M. A. Kudryashov ◽  
A. V. Prokopenkov ◽  
R. S. Ayriev
Keyword(s):  
Electric Vehicles ◽  
Environmentally Friendly ◽  
Economic Assessment ◽  
Intermediate Stage ◽  
Transport Infrastructure ◽  
Rolling Stock ◽  
Electric Transport ◽  
Electric Bus ◽  
Environmental Goals ◽  
Charging Stations

The article provides the results of an intermediate stage of research on development of a project to create infrastructure for operation of highly environmentally friendly electric vehicles. The transition to electric transport is one of the promising methods to solve the problem of emissions and achieve environmental goals. An electric bus is a relatively new type of rolling stock, requiring a balanced and objective justification for selection of certain possible options for technical, technological, economic and other aspects of organisation of its operation. To achieve the goal of developing a project to create infrastructure for operation of environmentally friendly electric vehicles, an initial analysis of legal acts, technical characteristics of electric buses and the parking and on route infrastructure approaches to organizing transportation by electric buses with various charging concepts was performed. The analysis of the concepts of charging electric bus batteries allowed to divide them into 5 classes and group into 3 groups according to charging speed. An analysis of the required infrastructure for operation of electric buses showed that conceptually there are 2 types of charging stations. The calculations and evaluation of various options for organizing operation of electric buses on a fixed route with various concepts of charging were performed. A necessary direction for further research is economic assessment of operation of electric buses with various charging concepts and the necessary transport infrastructure. The methods used include analysis, evaluation of previously performed analytical studies, legal acts and a synthesis of domestic and foreign experience.

scholarly journals The Economic Assessment of The Solution to the Multi-Criteria Problem for Determining Heavy Vehicles Usage Efficiency

2021 ◽  
Vol 17 (13) ◽  
pp. 151-156
Author(s):  
P. Smirnov ◽  
B. Subbotin ◽  
V. Klimenko
Keyword(s):  
Methodological Approach ◽  
Capacity Utilization ◽  
Economic Assessment ◽  
Operating Conditions ◽  
Load Carrying Capacity ◽  
Optimal Solutions ◽  
Heavy Vehicles ◽  
Utilization Factor ◽  
Load Carrying ◽  
Usage Efficiency

The article discusses approaches to assessing the effectiveness of the use of heavy vehicles on the example of equipment for the transportation of bulk cargo. The modernization of the existing methods for assessing the effectiveness of its application and the choice of specific operating conditions in the presence of uncertainties and existing restrictions in the environment is pro-posed, a methodological approach to solving this problem based on the classical theory of linear programming is proposed. As a result, within the framework of the indicated practical problem, the range of optimal solutions for the value of the load-carrying capacity utilization factor has been determined. The modernization of the existing methods for assessing vehicles based on determining the efficiency of their operation, thus, can be recommended for use by the engineer-ing and technical personnel of motor transport enterprises.

scholarly journals Optimal Scheduling to Manage an Electric Bus Fleet Overnight Charging

Energies ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2727 ◽  
Author(s):  
Adnane Houbbadi ◽  
Rochdi Trigui ◽  
Serge Pelissier ◽  
Eduardo Redondo-Iglesias ◽  
Tanguy Bouton
Keyword(s):  
Variable Temperature ◽  
Fitness Function ◽  
Methodological Approach ◽  
Lithium Ion ◽  
Operating Conditions ◽  
Coupled Modeling ◽  
Battery Lifetime ◽  
Electric Bus ◽  
Battery Capacity ◽  
Charging Strategy

Electro-mobility is increasing significantly in the urban public transport and continues to face important challenges. Electric bus fleets require high performance and extended longevity of lithium-ion battery at highly variable temperature and in different operating conditions. On the other hand, bus operators are more concerned about reducing operation and maintenance costs, which affects the battery aging cost and represents a significant economic parameter for the deployment of electric bus fleets. This paper introduces a methodological approach to manage overnight charging of an electric bus fleet. This approach identifies an optimal charging strategy that minimizes the battery aging cost (the cost of replacing the battery spread over the battery lifetime). The optimization constraints are related to the bus operating conditions, the electric vehicle supply equipment, and the power grid. The optimization evaluates the fitness function through the coupled modeling of electro-thermal and aging properties of lithium-ion batteries. Simulation results indicate a significant reduction in the battery capacity loss over 10 years of operation for the optimal charging strategy compared to three typical charging strategies.

scholarly journals Configurations, Power Topologies and Applications of Hybrid Distribution Transformers

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1215
Author(s):  
Alvaro Carreno ◽  
Marcelo Perez ◽  
Carlos Baier ◽  
Alex Huang ◽  
Sanjay Rajendran ◽  
...  
Keyword(s):  
Distribution Systems ◽  
Power Converter ◽  
Operating Conditions ◽  
Distribution Transformer ◽  
Nonlinear Loads ◽  
Electric Vehicle Charging ◽  
Distribution Transformers ◽  
Alternative Systems ◽  
Charging Stations ◽  
Hybrid Distribution

Distribution systems are under constant stress due to their highly variable operating conditions, which jeopardize distribution transformers and lines, degrading the end-user service. Due to transformer regulation, variable loads can generate voltage profiles out of the acceptable bands recommended by grid codes, affecting the quality of service. At the same time, nonlinear loads, such as diode bridge rectifiers without power factor correction systems, generate nonlinear currents that affect the distribution transformer operation, reducing its lifetime. Variable loads can be commonly found at domiciliary levels due to the random operation of home appliances, but recently also due to electric vehicle charging stations, where the distribution transformer can cyclically vary between no-load, rated and overrated load. Thus, the distribution transformer can not safely operate under highly-dynamic and stressful conditions, requiring the support of alternative systems. Among the existing solutions, hybrid transformers, which are composed of a conventional transformer and a power converter, are an interesting alternative to cope with several power quality problems. This article is a review of the available literature about hybrid distribution transformers.

Ефективність інноваційної діяльності харчової промисловості в системі цілей сталого розвитку країни

Ekonomika APK ◽  
2021 ◽  
Vol 319 (5) ◽  
pp. 46-56
Author(s):  
Olha Kovalenko ◽  
Liudmyla Yashchenko
Keyword(s):  
Sustainable Development ◽  
Capital Investment ◽  
Food Industry ◽  
Methodological Approach ◽  
Calculated Data ◽  
Weighted Average ◽  
Practical Significance ◽  
Educational Institutions ◽  
The Sustainable Development ◽  
Methodical Approach

The purpose of the article is to improve approaches to assessing the effectiveness of innovative activities of the food industry and its individual subsectors to identify prospects for development and problems that can hinder the sustainable development of this area of production and the country as a whole. Research methods. The article uses the methods of theoretical generalizations and comparisons, which made it possible to comprehensively consider and generalize methodological approaches to assessing the effectiveness of innovation in industries. When systematizing the calculated data by the intensity of innovation costs, the methods of statistical classification and grouping were used. To achieve the goal of the study, the methodology for assessing the level of manufacturability of industries has been improved (the OECD methodology is taken as a basis), which made it possible to re-evaluate the effectiveness of innovative activities in sub-sectors of the food industry with an emphasis on the computerization of production. Research results. The article presents a methodical approach to assessing the effectiveness of innovation in the food industry. The study is based on the OECD methodology for assessing the manufacturability of industries, which is to calculate the weighted average cost intensity of R & D. The application of this approach to the food industry has confirmed the too low level of its innovative manufacturability. It was found that due to the lack of relevant statistics on R&D expenditures, it is difficult to assess the effectiveness of innovation in certain sectors of the food industry. It is proposed to solve this problem with the help of capital investment indicators, which are invested in the software of industries and are directly related to the level of computerization of technological processes. The obtained indicators of the intensity of software costs are ranked in descending order and divided into three groups according to the level of computerization, which characterizes the efficiency of innovation, as its level increases profits and profitability in industries. This will contribute to the goals of sustainable development of the country (including goals 2 and 9) and increase the competitiveness of the food industry. Scientific novelty. A methodological approach to assessing the effectiveness of innovative activities of sub-sectors of the food industry in Ukraine is proposed, which will contribute to the formation of a new look at the research methodology of this area of knowledge. Practical significance. Designed for professionals in the field of food industry economics, scientists, teachers, graduate students and students of higher educational institutions. The results of the study can be used by experts to assess the level of manufacturability of industries. Tabl.: 3. Refs.: 30.

scholarly journals Methodical approach to building system of motivation of the project team

2021 ◽  
Vol 97 ◽  
pp. 01036
Author(s):  
Valeriya Glazkova
Keyword(s):  
Project Management ◽  
Methodological Approach ◽  
Development Project ◽  
Project Team ◽  
Team Members ◽  
Motivation System ◽  
Body Of Knowledge ◽  
Methodical Approach ◽  
Team Motivation ◽  
Empirical System

Currently investment and construction activities are based on the implementation of development projects. As any project’s success heavily depends on joint efforts of a project team members, there is an urgent need for a motivation system able to stimulate team members’ result-orientation and satisfy their individual needs. The Project Management Body of Knowledge (PMBOK) methodology is suggested as a basis for building a sound development team motivation system, with its motivational tools correlating to stages of project management. The purpose of this article is to build methodical approach to system of motivation of the development project team. The methodological approach is formed taking into account the correspondence of the goal and the type of motivation depending on the stage of project management, as well as on the basis of the principles of forming the motivation system of the project team. The result is a constructed conceptual model for the development of a motivation system for the development project team based on the principles of PMBOK. Methods of comparative, empirical, system and economic analysis were used to substantiate the propositions put forward in the article.

scholarly journals Assessing the Investment Attractiveness of Food Industry Enterprises

2021 ◽  
Vol 6 (521) ◽  
pp. 259-264
Author(s):  
L. I. Bezghinova ◽  
◽  
L. D. Zabrodska ◽  
H. I. Zabrodska ◽  
O. M. Nesterenko ◽  
...  
Keyword(s):  
Food Industry ◽  
Methodological Approach ◽  
The State ◽  
Normative Values ◽  
Return On Equity ◽  
Coverage Ratio ◽  
Methodical Approach ◽  
Industry Affiliation ◽  
Integral Assessment ◽  
Methodological Aspects

The article is aimed at substantiating the methodological approach to assessing the investment attractiveness of the food industry enterprise, taking into account its industry characteristics. The article describes the specifics of the activities of food industry enterprises, which can characterize the state of their investment attractiveness. The methodological aspects of assessment of investment attractiveness of enterprise are considered. The assessment of the investment attractiveness of a food industry enterprise is proposed to be carried out from the short- and long-term perspective. The methodology for assessing the investment attractiveness of the food industry enterprise is substantiated according to the following stages: formation of an information base of assessment; assessment of investment attractiveness elements and determination of their normative values by groups of financial coefficients; integral assessment of elements of the state of investment attractiveness; ranking of enterprises based on the results of the investment attractiveness assessment. Four groups of financial coefficients are distinguished in accordance with their economic content: liquidity (absolute liquidity ratio, coverage ratio); negotiability (negotiability ratio of total capital, negotiability ratio of current assets); financial sustainability (coverage structure coefficient, ratio of own and borrowed funds); profitability (return on assets, return on equity). The methodology allows, depending on the priorities and policies of the enterprise, its industry affiliation, investment climate, economic development conditions, to choose other criteria and indicators to assess the level of investment attractiveness. A methodical approach to the construction of an integral indicator of the assessment of investment attractiveness of enterprise and a factor map of its interpretation with the allocation of low, medium and high levels are proposed.

scholarly journals METHODICAL APPROACH TO COMPLEX ASSESSMENT OF QUALITY OF CUSTOMS SERVICES

2019 ◽  
Vol 1 (7) ◽  
pp. 100-107
Author(s):  
Yu. Gupanova ◽  
Yu. Chechulin
Keyword(s):  
Quality Assessment ◽  
Integrated Assessment ◽  
Critical Analysis ◽  
Methodological Approach ◽  
Comprehensive Assessment ◽  
Methodical Approach ◽  
Scientific Papers ◽  
Integral Quality

Based on a critical analysis of existing scientific papers in the field of assessing the quality of customs services and the activities of customs authorities as a whole, the need to develop a methodological approach to a comprehensive assessment of the quality of customs services has been revealed and substantiated. At the same time, an author’s approach to an integrated assessment of the quality of customs services has been proposed, which includes the principles of assessment, assessment directions, the method for calculating the overall integral quality assessment and specific indicators, which can be used to evaluate each of the directions.

scholarly journals Investment efficiency of business in Ukraine: realities and assessment methodology

2021 ◽  
Vol 2 (47) ◽  
pp. 48-63
Author(s):  
L.V. Sorokina ◽  
A.F. Hoiko
Keyword(s):  
Economic Efficiency ◽  
Capital Investment ◽  
Construction Projects ◽  
Methodological Approach ◽  
International Investment ◽  
Investment Efficiency ◽  
Investment Climate ◽  
Investment Projects ◽  
Methodical Approach ◽  
National Investment

 The article systematized factors of investment attractiveness and investment climate in Ukraine. The expediency of supplementinganexistinglist of components of investment climate is substantiated by two additional factors. Themechanismo factionoftheproposedfactorsthatreflectthenegative effectin the developmen to freformsand innovations, aswellas the economic efficiency of construction projects on the financial result, expected from investigations, isrevealed. The trends in the developmen to finvestment activityinUkrainein 2015 - 2020, the existence of reserves for increasing the economic efficiency of investments and the need for their calculation witht hehelpof a special methodological approac hare analyzed. The methodical approach to the evaluation of investment efficiency of constructionis developed, which is based on the magnitude of the multiplier of capital investment in construction inthelong-termperiodandrefinedtheboundariesoftheretrospectivehorizon, which are necessary to determine such a multiplier. The rapid importance of aninvestment multiplier of construction isestablis hedand a methodological approach to qualitative interpretation of this indicator issubstantiated. The basis of a methodological approach is the results of a cluster analysis of aninvestment multiplier in the contex to fvarioustypesofconstructionandregions, the methodof K-medium, aswellaspostulatesofthetheoryoffuzzysets. Within the framework of the developed methodological approach, the "investment attractiveness of construction" characteristicsis presentedin the form of a fuzz yterm-shear, which combines three terms: "Lowefficiency", "averageefficiency", "highlevelofefficiency". Inaccordance with descriptiv estatistics of thereceived clusters, the parameters and type of functions of affiliation, the boundaries of clusters that directly affecttheuse of correctivea mendments to the value of the economic effectof capitalinvestment to the level of the contractor-executor of construction work are substantiated. The sizeofther is kfactorisestablishedtakingintoaccountthetypeofconstructionandmedium-layervalues ​​ofmultipliersofcapitalinvestmentinconstruction. Theuse of the proposed Metdic approach to the analysis of investment efficiency inconstruction makesitpossible to increase the accuracy of calculations on th epre-investmentst age of construction, aswellastoimprovemonitoring of capital investment development, carried out in the process of implementing national investment programs and international investment projects.

Empirical Model of Operating Temperature and Pressure Effect towards Pure and Binary O2/ N2 Gas Permeability in Polysulfone Membrane

2018 ◽  
Vol 777 ◽  
pp. 238-244
Author(s):  
Serene Sow Mun Lock ◽  
Kok Keong Lau ◽  
Irene Sow Mei Lock ◽  
Azmi Mohd Shariff ◽  
Yin Fong Yeong ◽  
...  
Keyword(s):  
Empirical Model ◽  
Membrane Separation ◽  
Gas Permeability ◽  
Economic Assessment ◽  
Operating Conditions ◽  
Effect Of Temperature ◽  
Polysulfone Membrane ◽  
Wide Range ◽  
Temperature And Pressure ◽  
Membrane Permeance

Oxygen (O2) enriched air combustion via adaption of polymeric membranes has been proposed to be a feasible alternative to increase combustion proficiency while minimizing the emission of greenhouse gases into the atmosphere. Nonetheless, majority of techno-economic assessment on the O2 enriched combustion evolving membrane separation process are confined to assumption of constant membrane permeance. In reality, it is well known that membrane permeance is highly dependent upon the temperature and pressure to which it is operated. Therefore, in this work, an empirical model, which includes the effect of temperature and pressure to permeance, has been evaluated based on own experimental work using polysulfone membrane. The empirical model has been further validated with published experimental results. It is found that the model is able to provide an excellent characterization of the membrane permeance across a wide range of operating conditions for both pure and binary gas with determination coefficient of minimally 0.99.

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