Transport and Engineering Sciences

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Transport and Engineering Sciences

#4-trans Evaluating the Technical Efficiency of Power Equipment of Computer-based Railway Automation Systems

Abstract: This article focuses on the issues that arise during the evaluation of technical efficiency of hardware of computer-based systems for railway automation. Here the authors have proved the necessity of combined consideration of all components of the control power equipment and designated the borders in the general structure of hardware. The feature of [...] Load More formalized ways of a comprehensive assessment to compare technical solutions is given. A system of precise criteria and pointers of the technical efficiency of power equipment’s technical efficiency is developed by considering the particulars of the industry. It lets the people make a comparative evaluation of the different concepts of hardware’s construction.
Keywords: interface device, object power, power control equipment, own power, technical efficiency, parametric safety, distance method, performance indicators, specific criteria.
Date of publication: August 2024 / Deadline: 29 April 2024

Journal title: available for those who has paid.

Region of the journal publication: Europe.

Scientific field: Energy, Engineering, Social Sciences.

Indexing of the journal: Scopus (Q3-4).

 

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Architecture

#29-bild Building Envelopes’ Comparative Assessment throughout the Building Life Cycle

Abstract: The significance of the different ways to improve building energy efficiency is enhancing in the industry of construction. The most important step to solve this problem is to plan the thermal insulation walling structure with the most environmental and thermal characteristics. The authors have considered the walling structure characterized by the environmental [...] Load More requirements and high technical parameters. A proportional analysis of the walls' enclosure structures is provided, based on which the most well-organized wall building is derived. The six main options for the analysis for the building construction were considered.: foam block, brick, wooden frame, laminated veneer lumber, light steel thin-walled structures, straw blocks, wooden frame and their thermal insulation properties and all the necessary features were presented. This study was carried out on the calculation basis of the equation of the heat by utilizing the ANSYS Fluent package (ICEM CG+FD package) were used as well. The analysis result presented that the enfolding structure of walls made up of the light steel thin-walled construction with the lightness, insulation, better compactness shows greater thermal safety properties than the other enfolding structures.
Keywords: thermal insulation, Thermal energy, the energy efficiency of buildings, building life cycle, Building envelope, Energy saving, Thermomechanical indicators.
Date of publication: August 2024 / Deadline: 29 April 2024

Journal title: available for those who has paid.

Region of the journal publication: Europe.

Indexing of the journal: Scopus (Q3).

Scientific field: Engineering.

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#27-bild Hybrid wind solar seaward powerplants

Abstract: The study analyses the unpredictability of the power productivity from renewable energy foundations and finds possible solutions—the benefits of developing hybrid power plant in particular. The main engineering conclusions in emerging wind-PV power plants are studied. It was revealed that numerous samples mounting PV arrays on expectable wind rotors [...] Load More is barely operative due to indispensable motives. The large-scale wind off shore graphic representation consuming power plant while having the perpendicular axis turbine is briefly well-defined. The PV arrays mounting on the highest surface ring of this turbine looks alike a capable solution. It’s rewarding, e.g., the PV cells' better energy competence due to improved heat movement from their exteriors are obtained presented. Two conformations of rising PV modules upon the wind rotor, consistent joining diagrams, and the present gatherer unit are labelled. The hybrid power of the workflow is clarified. The simple structured topographies of hybrid wind-PV plant are derivative in the early designs. Their significances harvest 19,300 MWh of annual power result from the wind turbine a 572 MWh of the annual output energy form the joint PV cells group on the top of wind turbine. It is disclosed that PV cells bring the adequate energy to the power system of the blade revolt and all the different self needs, so the need of the expensive volume electric accumulators are falling. The subject is the new kind of hybrid solar wind power plants and their energy power efficacy resources and the ways. Novel Hybrid solar wind power plants and their efficient energy material and methods: The study has methodological and theoretical fundamentals in the Russian and scientist abroad in the renewable energy area. The research methods used are analytic. This study includes incident models of the solar incident radiation invented by Clacher and Hey and the Veibull delivery for the probability of calculating the velocity of the wind. Problematic instable power productivity from renewable energy bases was examined. It was revealed that establishing hybrid power plants in specific wind-PV plants is an effective and real answer. Combining a PV plant with conventional wind plants does not give a required positive effect due to some reasons. The marine unit of the wind energy with the lengthy upper ring surface was unhurried. The upper ring surface was considered an alternative design. This exterior fits the PV cells of the Mount. The preliminary results in calculations of the Hybrid seaward's energy parameters of the wind-PV power plant demonstrate that if the wind diameter turbine is 200 M, then its yearly energy output is 19,300 MWh. Simultaneously, the PV cells mounted on the tops of the turbine offer 572 MWh annually. Conclusion: Renewable energy sources are unstable, which is a serious problem having a powerful influence on the cost of energy. The problem can be alleviated fundamentally through using of hybrid power plants, particularly wind-PV plants. But, the hybridization with the traditional types of wind turbines doesn’t offer an important synergy. The mounting PV modules are on the top ring of the large-scale wind power unit looks like a promising solution. It is beneficial since the PV cells' power efficacy is enhanced due to the better heath flow given by the cells. Although the PV cells offered only is about 3% of the entire power capacity, it is sufficient to power drives the rotation of the blade as well as all other needs of the wind power plant.
Keywords: wind energy, solar-wind power plant, energy resources, offshore power plant, renewable energy, hybrid plant, photovoltaic.
Date of publication: August 2024 / Deadline: 30 April 2024

Journal title: available for those who has paid.

Region of the journal publication: Europe.

Indexing of the journal: Scopus (Q2); WoS (Science Citation Index Expanded).

Scientific field: Engineering.

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#19-bild Matrix method For Selecting Safety Fences On Road Bridges And Motor Roads

Abstract: The difficulties of installing barrier fences on roads and bridges are discussed. Barrier fences on highways and bridges are listed in detail, including their parameters and characteristics. Fencing parameters are presented in tables and graphs. The general criteria of modern revised normative documents (recommendations regarding safety fences on bridge [...] Load More structures and highways) are addressed. The methods for selecting a form of barrier fencing are given a lot of thought. The article's main goal is to illustrate a rational approach to selecting a road fence for the safe operation of highways, bridge systems, and the safety of road users such as motor vehicle drivers and passengers, non-motorized and horse-drawn vehicles, pedestrians, livestock, and wild cattle. Barrier fences are a basic but critical part of road infrastructure because it is possible to minimise the number of incidents and the harm caused by an accident by understanding how they are designed. Practical information is discussed in this article to assist in addressing issue questions about safety fencing on public roads and bridge structures.
Keywords: fence height, barrier fencing, holding capacity, barrier fencing and road structures parameters, allowable deflections.
Date of publication: September 2024 / Deadline: 30 April 2024

Journal title: available for those who has paid.

Region of the journal publication: Europe.

Scientific field: Energy, Engineering, Social Sciences.

Indexing of the journal: Scopus (Q3-4).

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  • Author #6
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Economics

#01-ec Subadditivity of costs as a criterion for evaluating natural monopolistic properties of transport networks

Abstract: The transport system, as an element of infrastructure, plays an important role in ensuring the economic development of the country and the region, determining the investment attractiveness, and the development potential of the production and service sectors. The efficiency of transport networks functioning is largely determined by the subadditivity [...] Load More of costs formed as a result of economy of scale and economy of structure, which reflect the natural monopoly properties of networks. The aim of the article is to develop an approach to identifying natural monopoly properties of transport networks and assess the efficiency of their functioning. The results of the study allowed setting forward an approach to the analysis of natural monopoly properties of transport networks through the indicator of subadditivity of costs. The implementation of the approach implies the construction of a model for identifying natural monopoly properties of transport networks using direct (aimed at assessment of subadditivity under the condition of prohibition of diversification of the investigated industry) and indirect (aimed at assessment of economy of structure, which is a necessary but not sufficient condition for manifestation of monopolistic properties) cost subadditivity test. The determinants of the model, presented as a square function of costs, are indicators of economy of scale, economy of structure, the average and marginal costs. Estimates of economy of structure and nonlinear upward function of dependence of production costs elasticity on the volumes of investments built for multiproduct transport networks were used to determine the areas of overload of transport networks, for which the subadditive effect is leveled as a result of nonlinear nature of cost growth with the growth of demand for products. An optimization imitation model of transport network development was built, which allowed, using search algorithms, identifying duplicative and bypass sections necessary for avoiding overload and improve the efficiency of transport network operation. The index of net present income served as the criterion of efficiency maximization with its growth testifying to their economic efficiency based on the optimization results. 625 points served as the statistical base for the research: data on demand and costs for cargo and passenger transportation, processed using EViews, Mathcard and Excel. The results obtained in the research can serve as a basis for developing a strategy for developing transport networks at the regional level, and the proposed methodological approach can become a tool for identifying, evaluating and maximizing the efficiency of their functioning.
Keywords: natural monopoly, transport network, subadditivity, economy of scale, economy of structure, costs.
Date of publication: September 2024 / Deadline: 30 April 2024

Journal title: available for those who has paid.

Region of the journal publication: Europe.

Scientific field: Multidisciplinary.

Indexing of the journal: Scopus Q1.

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Computer and Information Sciences

#8-ec System-process model for improving the efficiency of customs services

Abstract: The growing openness of national economies, the prospects for integration into the world economy, and the expansion of foreign economic activity raise the issue of efficient organization of customs services. The aim of the paper is to develop an approach to increase efficiency of customs service in the sea port area. In order to analyze events in real [...] Load More time, a system-process model for increasing the efficiency of customs services has been developed. The model is built using the technology of processing complex events. The actors of the customs services market, interrelationships between them, and the responsible executives (corresponding to the competence of the actors) have been determined empirically and confirmed by the results of theoretical analysis and systematization. The model is presented in the form of a network graph with a) nodes presenting the works that describe the process of providing customs service according to the technological cards of cargo handling; and b) edges presenting causal relations between the stages of the process. The network model, built using the AnyLogic software package, reflects the sequence of works describing cargo operations and the process of providing customs services in the sea port area; duration of each stage; and the conditions of transition to the next stage and responsible executives. The network model allows optimizing the process of providing customs service according to the criterion of minimizing the time for customs operations and minimizing costs by searching the shortest way through the network and streamlining the work of responsible executives on the basis of possible variants of sequence of stages and individual workloads. The results of the model construction are presented in graphical and analytical interpretation as a system-process model, which reflects the impact of input information and limitations on the system result. The developed model allows visually designing the process of providing customs services at the seaport and analytically confirming the findings. Optimization was carried out on the example of the system of customs services provided by the customs in the area of the container terminal of the port. The model based on the results of the study serves as an analytical tool for designing the process of customs services in seaports, taking into account the peculiarities of technological processing of cargo and can be used both for optimizing a separate customs system and for developing a state strategy for development of the customs service.
Keywords: customs services, cargo operations, optimization, efficiency, system-process model, network graph
Date of publication: September 2024 / Deadline: 29 April 2024

Journal title: available for those who has paid.

Region of the journal publication: Europe.

Scientific field: Multidisciplinary.

Indexing of the journal: Scopus Q1.

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