Visnik Priazovs''kogo Derzgavnogo Tehnicnogo Universitetu Seria Tehnicni Nauki最新文献

{"title":"Use of iron in oil concentration sensor for continuous monitoring of marine diesel engine technical condition","authors":"I.V. Khudiakov, I.V. Gritsuk, D.S. Pohorletsky, V.V. Chernenko, A.V. Polishuk","doi":"10.31498/2225-6733.46.2023.288180","DOIUrl":"https://doi.org/10.31498/2225-6733.46.2023.288180","url":null,"abstract":"The article examines the features of the general problem of reliability, accuracy and durability of machines, mechanisms and devices, namely, the issue of friction, lubricating action, wear of the surfaces of parts and working bodies, which exist among themselves in very complex correlational dependencies. An approach to increasing the reliability of a ship's diesel engine is proposed, which requires the development of effective calculation methods and models for predicting the durability and wear resistance of materials of parts in friction nodes at the limit of lubrication in a wide range of changes in operating conditions and taking into account the variable modes of operation of a ship's diesel engine. The article considers the general approach and specific features of the construction of the components of the diagnostic system of the ship's internal combustion engine. Based on the selected volume of tasks solved by the diagnostic system, the sequence of functioning of its elements is determined. The implementation of this algorithm can have a significant effect in the complex use of diagnostic information together with statistical information stored individually for each mechanism, when managing its technical condition. On the basis of the proposed diagnostic model, it is possible to recognize the technical condition of marine diesel engines based on tribomonitoring data, detecting changes in friction conditions and an increase in the rate of wear of parts of the cylinder-piston group. This will enable the initiation of preventive corrective actions aimed at ensuring the reliable and safe operation of marine engines","PeriodicalId":31573,"journal":{"name":"Visnik Priazovs''kogo Derzgavnogo Tehnicnogo Universitetu Seria Tehnicni Nauki","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135040886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On the force calculation of capture mechanisms and clamps using the «golden» rule of mechanics","authors":"T.M. Karpenko, I.M. Muzyka, V.V. Shishkin","doi":"10.31498/2225-6733.46.2023.288124","DOIUrl":"https://doi.org/10.31498/2225-6733.46.2023.288124","url":null,"abstract":"When designing and reconstructing gripping devices or clamps, the issue of the geometric parameters of the research object that will ensure the required value of the power transmission coefficient is relevant. Usually, when performing calculations of such lever-rod mechanisms, which consist of several links, the balance of each link is considered and systems of algebraic equations are solved, which is a time-consuming process. In this paper, the power transmission coefficient, regardless of the scheme under consideration, is determined from one equation, the so-called «golden» rule of mechanics: «for the balance of a mechanical system, it is necessary and sufficient that the sum of the possible powers of active forces equals zero». In order to obtain the dependences between the speeds of the intermediate hinges for the links performing a planar movement, the \"theorem on the projections of the velocity vectors of the points onto the line connecting these points\" is applied. Common schemes of gripping devices of industrial robots and clamps, which are used in technological processes of metalworking and welding, are considered. Designers have the opportunity to apply the proposed method and, after performing numerous analyzes of the obtained formulas to determine the power transmission coefficient of a specific example, choose the most optimal combination of the dimensions of the mechanism and the angles between its rods. This will ensure the values of traction force or pressure in the pneumatic cylinder necessary for the operation of the mechanism, which will significantly save production resources. The algorithm proposed in the work can be applied to other flat mechanisms","PeriodicalId":31573,"journal":{"name":"Visnik Priazovs''kogo Derzgavnogo Tehnicnogo Universitetu Seria Tehnicni Nauki","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135155578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving the method of controlling the search for surface and underwater objects by a hybrid robotic complex","authors":"O.V. Levchenko, M.V. Borina","doi":"10.31498/2225-6733.46.2023.288183","DOIUrl":"https://doi.org/10.31498/2225-6733.46.2023.288183","url":null,"abstract":"One of the important scientific tasks of organising the control of searching for surface and underwater objects is to ensure the efficiency and trouble-free movement of a hybrid robotic complex in the modes of transition and search operation. An analysis of modern methods of controlling the search for surface and underwater objects by robotic vehicles in search operations, scientific and environmental research, monitoring, inspection and military underwater operations shows the need to use hybrid robotic systems. As part of the intellectualisation of the route planning process, it is relevant to solve the problem of synthesising an optimal trajectory to ensure that the search is carried out in all designated areas of the operation. The paper solves the problem of organising the management of searching for surface and underwater objects by a hybrid robotic complex, namely, building a route in the area of interest as an optimal spline trajectory of a moving object. The possibility of constructing a navigation function through the effective use of the curvature of the spline trajectory as a reproductive template for constructing an axonometric projection is determined. To accomplish this task, the paper improves the method of controlling the search for surface and underwater objects by a hybrid robotic complex by formalising the processes of planning the route of the hybrid robotic complex and the processes of information processing, forecasting the navigation situation and choosing a strategy for preventing dangerous situations by combining intelligent and numerical methods. The developed algorithm for constructing a search route for a hybrid robotic complex allows automated formation of spline trajectories in real time with synchronous submission of information about the parameters of the route to the control system of the hybrid robotic complex. This approach makes it possible to automate the search operation process and apply it in the CoCoRo and e-Navigation concepts","PeriodicalId":31573,"journal":{"name":"Visnik Priazovs''kogo Derzgavnogo Tehnicnogo Universitetu Seria Tehnicni Nauki","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135155581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of electric traction drive for the modernization of locomotives with hydraulic power transmission","authors":"S.V. Roi, A.V. Kachan, A.S. Tykhonov, D.I. Iakunin, Ye.S. Riabov","doi":"10.31498/2225-6733.46.2023.288177","DOIUrl":"https://doi.org/10.31498/2225-6733.46.2023.288177","url":null,"abstract":"The issue of updating the locomotive fleet of industrial enterprises by modernizing outdated diesel locomotives with hydraulic power transmission was considered. The analysis of existing modernizations shows the possibility of using traction electric drive while preserving the original group drive of wheel pairs. This approach is used by manufacturers when updating outdated and creating new diesel locomotives and traction modules for rolling stock. A possible option is the use of single-motor carts. Previous studies on the choice of the type of wheel pairs drive were analyzed and it was established that the use of a group drive of wheel pairs provides the possibility of realizing high traction forces without additional devices, and the drive itself has a lower cost. This determines the expediency of using a group drive of wheel pairs when modernizing diesel locomotives with hydraulic power transmission. To realize these advantages, it is necessary to use a traction electric drive based on electromechanical alternating current converters. This approach was implemented by Mykolaiv Locomotive Repair Plant LLC during the modernization of TGM6 diesel locomotives. The diesel locomotive is intended for shunting and hauling operations, as a result of which it was assumed during the design that the traction force when moving is equal to 320 kN, the continuous traction force is 300 kN, and the maximum speed is 50 km/h. The power plant consists of a modern Cummins diesel engine and a synchronous generator. A frequency-controlled asynchronous traction electric motor is used to drive the wheel pairs. Power and control of the electric motor is carried out using a voltage inverter. Diesel locomotives use a controlled electric drive of cooling motor-fans, and semiconductor converters are used to power auxiliary systems. The locomotive and its systems are controlled by a microprocessor control system. The application of the traction electric drive based on the asynchronous electric motor provided the estimated efficiency of the diesel locomotive and the efficiency of the diesel power at the nominal power and the estimated speed of the long-term mode, equal to 6 km/h, are 0.312 relative units and 0.69 relative units, respectively. The analysis of ways to improve the traction electric drive to reduce the consumption of fuel and energy resources was carried out. It was determined that the use of a power plant with energy storage and the use of two traction electric motors for the group drive of wheel pairs may be expedient","PeriodicalId":31573,"journal":{"name":"Visnik Priazovs''kogo Derzgavnogo Tehnicnogo Universitetu Seria Tehnicni Nauki","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135155746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of technological properties of the sample ethiopian iron ore of the arabian-nubian shield. Part 2. Microscopic analysis of ore samples with a thickness of +40.0+5.0 mm","authors":"V.V. Krivenko, E.V. Chuprinov, T.A. Oliinyk, V.M. Haritonov, L.V. Skliar","doi":"10.31498/2225-6733.46.2023.288168","DOIUrl":"https://doi.org/10.31498/2225-6733.46.2023.288168","url":null,"abstract":"As a result of the research, the mineral composition of the mineralogical and petrological varieties of material of the 10-20 mm and 20-40 mm size classes of the studied ore sample was specified. Transparent and polished sections of the above-mentioned granulometric samples were prepared. Microscopic examination was carried out using a transmitted and reflected light microscope «Carl Zeiss Jena NU-2 Microscope». A description of the discovered minerals was completed. It was found that the main ore minerals of the studied ore are dispersed hematite and hydrohematite, and their amount is about 54.0% of the total volume. Microscopic analysis also revealed hydrohematite spherulites, including in the intergranular space in quartz aggregates. It is shown that secondary ore minerals in the studied raw materials are goethite and hydrogoethite. Microscopic analysis showed their content at the level of 4.0 %. The color of goethite and hydrogethite, which are represented by iron hydroxides of yellow, brown, brown and black color and their form in the form of nodular aggregates, spherulites of crusts, and nest-like aggregates, is also determined. It was found that the main non-metallic mineral in the studied raw material is quartz, the content of which is on average 30 %. This mineral in the sample of the studied ore is characterized by a variety of morphological features and a wide range of grain sizes – from several micrometers to several centimeters. Microscopic examination of quartz showed that it is represented by xenomorphic grains with a complex nature of fusions with other minerals, rounded and acute-angled grains, chalcedony (agat) grains and thin-prismatic crystals. The presence of a secondary non-ore mineral, which has clay properties and is represented by kaolinite, is also shown. An additional study was carried out, in which chalcopyrite – an additional component of iron ore raw materials – was analyzed. The conducted microscopic studies made it possible to draw a conclusion about the mineral and petrological characteristics of the raw material. It is shown that the type of iron ore of the Arabian-Nubian shield is similar to ores of volcanic-sedimentary origin and brown iron ores","PeriodicalId":31573,"journal":{"name":"Visnik Priazovs''kogo Derzgavnogo Tehnicnogo Universitetu Seria Tehnicni Nauki","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135155577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of proposals for formalising the process of filtering navigation information of an underwater robot at shallow depths","authors":"O. Dubynets","doi":"10.31498/2225-6733.46.2023.288182","DOIUrl":"https://doi.org/10.31498/2225-6733.46.2023.288182","url":null,"abstract":"The purpose of the article is to increase the efficiency of solving the problems of stabilising underwater robots at shallow depths based on complex processing of navigation information and its filtering using the Kalman theory. This goal is achieved by defining a set of mathematical dependencies for formalising the process of filtering navigation information of underwater robots based on complex data processing. In this case, the filtering is carried out using a distributed set of Kalman filters of different structures, which were selected considering the characteristics of the data being evaluated. It has been established that at present, underwater robots at shallow depths are widely used around the world for various tasks, including search operations and underwater inspections. However, the operation of these robots is characterised by difficult conditions. These conditions include unknown parameters of underwater navigation, the impact of external disturbances, changes in the mass, size and hydrodynamic characteristics of robots while operating in water. Currently, the concept of control based on intelligent methods is considered a promising approach to automating the control of moving objects. However, the use of such controllers for underwater robots, together with the problems of obtaining up-to-date navigation information, has not yet achieved sufficient efficiency. In addition, the issues related to the development of a navigation information processing system using nonlinear filters and the creation of intelligent controllers for underwater robots are still insufficiently covered in the scientific and technical literature. The most significant result is a set of mathematical dependencies for formalising the process of filtering navigation information of underwater robots using a set of distributed Kalman filters of different structures. Such sets are closely correlated with the relevant characteristics of the data being evaluated. In this context, the inertial module with Kalman filtering algorithms can be used to measure angular motion parameters and solve the problems of roll, pitch and yaw stabilisation. Due to the low speeds of underwater robots at shallow depths and the absence of high-frequency interference in the pressure sensor measurements, the data from the pressure sensor can be used to determine the vertical speed","PeriodicalId":31573,"journal":{"name":"Visnik Priazovs''kogo Derzgavnogo Tehnicnogo Universitetu Seria Tehnicni Nauki","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135155583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of a web-based application for organizing the operation of a car service station","authors":"I. Marchenko, O. Balalaieva, A. Serhiienko, M.O. Tarazanov","doi":"10.31498/2225-6733.46.2023.288123","DOIUrl":"https://doi.org/10.31498/2225-6733.46.2023.288123","url":null,"abstract":"The article provides material on the optimization of business processes and document flow automation of car service stations using web-based applications. This will allow to quickly and accurately diagnose malfunctions, plan and control the work of mechanics, provide quality service and increase customer satisfaction. A comparative analysis of the most common CRM systems was carried out according to such criteria as functionality, cost of the program, technical support, integration with other software, as well as features of implementation at the enterprise. It was found that the adaptation of CRM systems to the conditions of a specific business entity requires significant financial costs, which is not appropriate for small business representatives. The most reasonable solution for automating the operation of maintenance stations is the development of their own websites, taking into account the specifics of the business processes of each enterprise. A web application has been developed that allows you to optimize such processes as maintaining a customer account and car diagnostic card, distributing and processing requests for maintenance, as well as creating an archive of requests and rating employees based on customer feedback. The PHP programming language, the PHPWord library for creating text documents and the Bootstrap framework, the MariaDB database and the web interface for its administration, phpMyAdmin, were used for development. The application was created in the PhpStorm software environment from the JetBrains company. The implementation of the developed software will improve the processes of working with customers and increase the quality of services provided by the technical service station","PeriodicalId":31573,"journal":{"name":"Visnik Priazovs''kogo Derzgavnogo Tehnicnogo Universitetu Seria Tehnicni Nauki","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135155584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Features of low-temperature corrosion protection of cylinder sleeves of ship low-speed engines","authors":"D.S. Pohorletsky, I.V. Gritsuk, I.V. Khudiakov, V.V. Chernenko, A.V. Polishuk","doi":"10.31498/2225-6733.46.2023.288181","DOIUrl":"https://doi.org/10.31498/2225-6733.46.2023.288181","url":null,"abstract":"The article examines the specifics of solving one of the problems of low-speed marine engines, during which low-temperature corrosion of cylinder liners occurs during operation at minimum and partial load modes. An overview of the cooling systems of ship's main engines was conducted and possible prospects for improving the cooling systems of ship's diesel engines were considered. Attention is paid to the causes and methods of combating low-temperature corrosion of ship's main engines. The methods of regulating the cooling system of marine diesel engines were considered, and it was determined that the modern concept of regulation in the cooling system should include both automatic regulation of operational parameters due to the installation of frequency-regulated cooling system pumps, and regulation of the water-chemical parameters of the cooling system. Methods of regulating the operating parameters of the pumps in the cooling system of the ship's main engine were also considered, which use the principle of frequency regulation of centrifugal pumps to ensure the modes of operation with the highest efficiency. Thus, frequency regulation is an energy-efficient way of regulating centrifugal pumps with variable coolant flows in ship engine cooling systems and one of the ways to maintain an optimal temperature state. The possibility of modernizing the cooling system of cylinders of low-speed engines according to the principle of the LDCL system to reduce the impact and occurrence of low-temperature corrosion was considered","PeriodicalId":31573,"journal":{"name":"Visnik Priazovs''kogo Derzgavnogo Tehnicnogo Universitetu Seria Tehnicni Nauki","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135155743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Features of the interdependence of Big Data and Internet of Things technologies","authors":"D. Ivanov, V. Alekseienko, T. Yarmolenko","doi":"10.31498/2225-6733.46.2023.288096","DOIUrl":"https://doi.org/10.31498/2225-6733.46.2023.288096","url":null,"abstract":"One of the main aspects of this study was the use of Big Data tools to analyze and effectively use the data generated by Internet of Things (IoT) devices. Big data allows you to store and analyze a huge amount of diverse data, as well as to obtain valuable information from it. With the help of Big Data tools, it is possible to process this data efficiently using parallel algorithms and analysis methods in real or quasi-real time. The purpose of the article is to analyze the latest relevant research in the field of Big Data and the Internet of Things, as well as to reveal the features of their interdependence. To achieve this goal, the method of systematic review of scientific literature was used, which allowed to systematically trace and analyze significant research and publications in this area. The methodology of this research is based on a retrospective analysis of literature sources and scientific publications related to the use of Big Data and the Internet of Things in various fields. To collect data, a systematic search of electronic databases such as IEEE Xplore, ScienceDirect, and searches on web resources such as Google Scholar were used. The analysis identified key concepts, methods, and practical applications of combining Big Data and the Internet of Things. The latest developments in the Internet of Things architecture and Big Data models were analyzed. The practical significance of the study is that it contributes to a deeper understanding of the latest research in the areas of Big Data and the Internet of Things, the interaction between them and the identification of new opportunities for using this combination in various industries. The results of this research can be used to develop new technologies and improve existing systems for collecting, processing, and analyzing data. In addition, these findings can be used as a basis for further research in this area aimed at improving and implementing new solutions. This study helps to deepen the understanding of the potential of combining Big Data and the Internet of Things and to point out ways for further development in this area","PeriodicalId":31573,"journal":{"name":"Visnik Priazovs''kogo Derzgavnogo Tehnicnogo Universitetu Seria Tehnicni Nauki","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135155747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of refractory materials for steel ladles","authors":"O.M. Stoianov, K.H. Niziaev, Kh.V. Malii, V.V. Kukhar","doi":"10.31498/2225-6733.46.2023.288166","DOIUrl":"https://doi.org/10.31498/2225-6733.46.2023.288166","url":null,"abstract":"The article analyzes the service life of refractories and various options for combined lining of steel ladles used in steelmaking shops with out-of-furnace steel processing departments, and identifies the main trends in its development. The use of various types of lining is analyzed based on the experience of Japan, Germany, Austria, and France. The technological conditions of operation of steel ladles with the main lining are considered. Under operating conditions, the lining areas near the slag belt and the place where the jet hits the bottom of the ladle are subject to the greatest destruction, so it is advisable to install high-quality refractories in these areas. In addition, the reasons for the insufficient stability of refractories are identified, including decarburization, corrosion, ladle slag formed during out-of-furnace metal processing, the use of synthetic additives to slag, high thermal conductivity of refractory materials during operation, and others. Ways to increase the service life of steel ladles are identified. It is shown that the world practice is characterized by the use and intensive improvement of the main lining of steel ladles through the use of new materials with increased refractory and operational characteristics. The experience of refractory improvement by Shinagawa Refractories, TYK Corp, Plibrico, Nippon Steel, Krosaki Harima, and IPSCO Steel, including practical testing at production, is presented. It is established that the high cost of consumables and increased requirements for manufacturing technology hinder the massive introduction of the developed technologies at metallurgical enterprises","PeriodicalId":31573,"journal":{"name":"Visnik Priazovs''kogo Derzgavnogo Tehnicnogo Universitetu Seria Tehnicni Nauki","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135155749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}