IF 1.7 4区工程技术

Transport Pub Date : 2023-12-29 DOI: 10.3846/transport.2023.20609

Ibrahim Badi, Željko Stević, D. Radovic, Bojana Ristić, Aleksandar Cakić, S. Sremac

引用次数: 0

APPLYING REGULAR RELIEF ONTO CONICAL SURFACES OF CONTINUOUSLY VARIABLE TRANSMISSION TO ENHANCE ITS WEAR RESISTANCE 在无级变速器的锥形表面上形成规则的浮雕，以提高其耐磨性

IF 1.7 4区工程技术

Transport Pub Date : 2023-12-29 DOI: 10.3846/transport.2023.20628

V. Dzyura, Pavlo Maruschak, S. Slavov, D. Dimitrov

{"title":"APPLYING REGULAR RELIEF ONTO CONICAL SURFACES OF CONTINUOUSLY VARIABLE TRANSMISSION TO ENHANCE ITS WEAR RESISTANCE","authors":"V. Dzyura, Pavlo Maruschak, S. Slavov, D. Dimitrov","doi":"10.3846/transport.2023.20628","DOIUrl":"https://doi.org/10.3846/transport.2023.20628","url":null,"abstract":"While investigating the variator transmission of vehicles, the relationship between the technological and service parameters of the working surfaces of conical disks treated by technological methods was established. The service properties are proposed to be enhanced by Regular MicroReliefs (RMRs) created on such surfaces. The optimal technological processing conditions were found, which allow retaining the greatest amount of lubricant. The causes of surface defects, formed on the working surfaces of conical disks of the Continuously Variable Transmission (CVT), are systematized and classified. The wear resistance of such surfaces is proposed to be enhanced by technological methods, in particular, by forming partially RMRs on them. Their application facilitates relaxation processes on the material near to the surface, reduces shear stresses and strains, thus preventing the formation of burrs and extending the life of the conical disks of the CVT. A novel approach for obtaining the toolpaths of the deforming element, based on the so-called “Commis–Voyageur problem” algorithms, is employed in order to research the possibilities for involving that methods in toolpath generation. Dependences between the partial RMR’s formation conditions (deforming forces and feedrate) and microgeometric quality parameters are established. The latter include surface roughness, with a partially RMR applied onto the face surfaces of the test specimen (rotary body). It is found that these microreliefs enhance the ability of oil retaining in plastically deformed traces, formed over the operational surfaces, in comparison with those, that are processed by traditional cutting methods, as turning for example.","PeriodicalId":23260,"journal":{"name":"Transport","volume":"99 6","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139146900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

PANDEMIC IMPACT ON TRAFFIC TRENDS AND PATTERNS IN THE CITY OF BELGRADE 大流行病对贝尔格莱德市交通趋势和模式的影响

IF 1.7 4区工程技术

Transport Pub Date : 2023-12-21 DOI: 10.3846/transport.2023.19375

Draženko Glavić, Ana Trpković, Marija Milenković, Sreten Jevremović

{"title":"PANDEMIC IMPACT ON TRAFFIC TRENDS AND PATTERNS IN THE CITY OF BELGRADE","authors":"Draženko Glavić, Ana Trpković, Marija Milenković, Sreten Jevremović","doi":"10.3846/transport.2023.19375","DOIUrl":"https://doi.org/10.3846/transport.2023.19375","url":null,"abstract":"The appearance of the COVID-19 virus has caused great changes in all spheres of life. Probably the most visible change is the cities’ lockdown, with the suspension of traffic and transport systems. The capital of the Serbia – Belgrade also went through a complete lockdown, which lasted for almost 2 months (53 days). In that period, nearly all activities were reduced, producing significant losses for the whole economic development, healthcare, food supply chain, transport sector and most importantly public transport system. The behaviour of users in such situations can greatly influence the change in the share of certain modes of transport in the overall modal share. The aim of this article is to examine the influence of the COVID-19 pandemic on the transport mode choice for different trip purposes, as well as the examination of different impact factors, such as gender, age, education level, employment status, income, transport mode used before the pandemic, and average distance travelled, on the change of mode of transport. Data of 1143 users were analysed through a survey, for the area of the city of Belgrade, using the McNemar–Bowker test and binary logistic regression. The results showed that pandemic had a significant impact on the transport mode change for all trip purposes. The key factors influencing the change in the mode of transport are factors related to gender, level of education, income, the type of transport used before the pandemic and the average distance travelled. It is also interesting to note that the results showed a significant number of transfers to individual modes of transport, as well as micromobility vehicles and walking. Therefore, this article provides the necessary help in understanding the transport system user’s behaviour, which can facilitate the choice of adequate measures, modes and activities for decision-makers in these specific situations.","PeriodicalId":23260,"journal":{"name":"Transport","volume":"27 9","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138951788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

SPATIAL PARTITION FOR HETEROGENEOUS CITY NETWORKS COMPOSED OF FACTORS THAT INFLUENCE THE DISTRIBUTION OF THE MACROSCOPIC FUNDAMENTAL DIAGRAM 由影响宏观基本图分布的因素组成的异质城市网络的空间分区

IF 1.7 4区工程技术

Transport Pub Date : 2023-12-21 DOI: 10.3846/transport.2023.20424

Heng Ding, Hanyu Yuan, Xiaoyan Zheng, Hanyue Ma, Haijian Bai

{"title":"SPATIAL PARTITION FOR HETEROGENEOUS CITY NETWORKS COMPOSED OF FACTORS THAT INFLUENCE THE DISTRIBUTION OF THE MACROSCOPIC FUNDAMENTAL DIAGRAM","authors":"Heng Ding, Hanyu Yuan, Xiaoyan Zheng, Hanyue Ma, Haijian Bai","doi":"10.3846/transport.2023.20424","DOIUrl":"https://doi.org/10.3846/transport.2023.20424","url":null,"abstract":"Using a Macroscopic Fundamental Diagram (MFD) to implement partition control is effective in improving mobility in heterogeneous city networks. As one of the most complex issues in partition control, accurate sub-region partition is critical for control effectiveness. Current partition methods focus on the link density and precondition of existing MFD and disregard the factors that influence MFD distribution. To overcome this drawback, this study uses the characteristic value of the link and the intersection connected to the link as the analysis object and proposes an MFD sub-region partitioning method for large-scale networks. Firstly, the influences of road state parameters on MFD distribution are classified into traffic flow parameters, network physical properties, network operation mechanisms and emergencies. Simulation experiments are conducted to determine the degree to which these classifications affect MFD distribution. Secondly, a partition method combined with the link density and influence parameters of MFD is developed. The method is used for a preliminarily division of a road network through Minimum Spanning Tree (MST) and depth partition by the Normalised Cut (Ncut) algorithm. Finally, a case study is conducted in an actual city centre network, and results show that the developed method is superior to the single method based simply on link density.","PeriodicalId":23260,"journal":{"name":"Transport","volume":"46 25","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138950075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

AIRPORT PLANNING: APPROACHES TO DETERMINING THE PLANNING HORIZON 机场规划：确定规划范围的方法

IF 1.7 4区工程技术

Transport Pub Date : 2023-12-01 DOI: 10.3846/transport.2023.19797

Antonín Kazda, Alena Novák Sedláčková, Matija Bračić

{"title":"AIRPORT PLANNING: APPROACHES TO DETERMINING THE PLANNING HORIZON","authors":"Antonín Kazda, Alena Novák Sedláčková, Matija Bračić","doi":"10.3846/transport.2023.19797","DOIUrl":"https://doi.org/10.3846/transport.2023.19797","url":null,"abstract":"Airport planning is a challenging task that requires knowledge of many standards and recommended practices, bylaws and procedures. Besides, it is possible that politicians would try to intervene in the planning process, which always exceeds the election period of one government. Therefore, the article provides in-depth theoretical analysis of the problem and summarizes the results of research that focused on comparing the approach to the airport planning issues in the Slovakia and Croatia. The primary goal was to develop a methodology for determining the airport planning horizon, to assess the significance of individual planning phases and to evaluate results. The research was carried out using a combination of several methods. The main challenge was to determine the length of the planning horizon. In 2 panels, 32 experts from Slovakia and Croatia were interviewed and 224 different responses were received and processed by the fuzzy Delphi method. The advantage of this approach relies on combination of well – developed theory and practical solutions in cooperation with experts from the industry. Despite the different legal frameworks and similar standards for airport planning in both countries, the results of the research proved that the values of the optimal planning horizons are comparable. As a result, the methodology can therefore be used in other countries with similar conditions. However, planning procedures and practices depend on the specifics of states or even regions. Eventually, the experience from the research provides relevant and robust material to support teaching. Besides, it is transferable to other fields of transport infrastructure planning. Additionally, the research results were provided to the state planning authorities.","PeriodicalId":23260,"journal":{"name":"Transport","volume":"41 4","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138622628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

EXPERIMENTAL STUDY ON DRIVER’S MENTAL LOAD IN HAIRPIN CURVES OF MOUNTAINOUS HIGHWAY 山区公路发夹弯道驾驶员心理负荷试验研究

4区工程技术

Transport Pub Date : 2023-10-18 DOI: 10.3846/transport.2023.19795

Ying Chen, Xiaohui Wang, Xiaobo Zhang, Haiyuan Chen, Zhigang Du, Jin Xu

{"title":"EXPERIMENTAL STUDY ON DRIVER’S MENTAL LOAD IN HAIRPIN CURVES OF MOUNTAINOUS HIGHWAY","authors":"Ying Chen, Xiaohui Wang, Xiaobo Zhang, Haiyuan Chen, Zhigang Du, Jin Xu","doi":"10.3846/transport.2023.19795","DOIUrl":"https://doi.org/10.3846/transport.2023.19795","url":null,"abstract":"In order to reveal the driving psychological characteristics and influencing factors of drivers under the hairpin curve section, 11 continuous hairpin curves on mountain roads were selected for natural driving test, and the on-board instruments were used to collect the driver’s ElectroCardioGraphy (ECG) under the natural driving habits. Analyse the overall heart rate characteristics, Heart Rate Increase (HRI), Heart Rate Variability (HRV) characteristics of drivers, as well as the relationship between heart rate change and the visual performance of curve corner and slop and curve environment. And compared with the general curve. The results show that: with 180° as the limit, the curve angle of the hairpin curve was divided into 3 types: greater, less or approximate. The 3 types of curve angle have different effects on the driver’s heart rate fluctuations. The overall heart rate distribution can be divided into 2 regions, in which the average heart rate of each driver at the curve, which curve angle ≈ 180°, was higher than the other 2 types of curves. The overall fluctuation range of heart rate in the middle of the curve is at the lowest level in the 3-stage curve segment area. Through the eigenvalue analysis of HRI, it can be seen that the drivers were more susceptible to the external environment when going downhill. When going uphill, the distribution range of the heart rate abnormality value was stable, but the sudden change was obvious. However, during the downhill direction, the overall adjacent heart rate varies greatly, but the abrupt change was small. Take the change trend of the HRI in the curve segment as an indicator, heart rate types were divided into 4 categories, continuous tension, relax gradually, relaxation-tension, and tension-relaxation. The 4 modes have a significant relationship with the difference of curve entrance environment. Compared with the modes shown in general curves, they focus on the modes with greater volatility, while the general curves focus on a more single growth trend.","PeriodicalId":23260,"journal":{"name":"Transport","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135889126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

IMPACT OF PUBLIC PASSENGER TRANSPORT ORGANIZATION MODEL ON SYSTEM PERFORMANCE AND SERVICE QUALITY 公共客运组织模式对系统绩效和服务质量的影响

4区工程技术

Transport Pub Date : 2023-10-09 DOI: 10.3846/transport.2023.19736

Pavle Pitka, Milan Simeunović, Ivana Milenković, Milja Simeunović, Ivan Škiljaica

{"title":"IMPACT OF PUBLIC PASSENGER TRANSPORT ORGANIZATION MODEL ON SYSTEM PERFORMANCE AND SERVICE QUALITY","authors":"Pavle Pitka, Milan Simeunović, Ivana Milenković, Milja Simeunović, Ivan Škiljaica","doi":"10.3846/transport.2023.19736","DOIUrl":"https://doi.org/10.3846/transport.2023.19736","url":null,"abstract":"Organization and management of Public Passenger Transport (PPT) system is a complex process, which significantly impacts the functioning of the system. Globally, there is no unique solution for organization model of PPT, but the organization models are adjusted to the characteristics of each individual area. Organization model of PPT, inherited from the self-management system of the former Socialist Federal Republic (SFR) Yugoslavia, became unsustainable in the Municipality of Inđija (Serbia) and did not fulfil transport needs and demands of passengers regarding the amount of transport and its quality in optimal manner. Old organization model has been replaced by a new modern model, based on positive experiences from developed European cities. Article presents the impact of new organization model of PPT on the work of the system. Research has been conducted in order to determine the state of both old and new system’s organization model by counting and interviewing passengers during years 2008 and 2017. In accordance with the changes made in the system, comparative analysis “before and after changes” has been done along with establishing of the effects of changes on functioning of the system and service quality. Results show significantly improved service quality, while transport demands increase by 38.3%.","PeriodicalId":23260,"journal":{"name":"Transport","volume":"289 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135095884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

EVALUATING THE SUCCESS FACTORS OF INTEGRATING THE RAILWAY INTO THE PUBLIC URBAN–SUBURBAN TRANSPORT 铁路融入城市-郊区公共交通的成功因素评价

4区工程技术

Transport Pub Date : 2023-10-06 DOI: 10.3846/transport.2023.18333

Ljupko Šimunović, Saša Hirnig, Borna Abramović

{"title":"EVALUATING THE SUCCESS FACTORS OF INTEGRATING THE RAILWAY INTO THE PUBLIC URBAN–SUBURBAN TRANSPORT","authors":"Ljupko Šimunović, Saša Hirnig, Borna Abramović","doi":"10.3846/transport.2023.18333","DOIUrl":"https://doi.org/10.3846/transport.2023.18333","url":null,"abstract":"The success of integrating the railway into the public urban and suburban transport depends upon a range of internal and external factors, with challenges arising in their number and complex interdependence. Furthermore, the significance and impact of some factors are uneven in cities. There is a necessity for the right mix of different factors that drive significant use of railway into the Public Transport System (PTS). The research problem is finding and defining factors needed to assess the success of railway implementation into public urban and suburban transport. An efficiency analysis of the factors that impact the level of the planned transport system use was conducted in a hierarchical or network system. The 1st step of research is to the determination of relevant factors. In this research 27 factors were determined. Based on the determining factors and their connection it is possible to design an Analytic Network Process (ANP) to evaluate the importance of factors. Factors are divided into 4 clusters: (1) user features, (2) road transport features, (3) services features, and (4) city and corridor features. Testing was carried out by group decision-making process by members of an expert panel. According to the testing, the most important factors according to their weight are: (1) frequency with 0.11651, (2) employment level with 0.10146, (3) ticket price with 0.09714, (4) reliability with 0.07256, and (5) integration of services with 0,07065. Using the weight of each factor it is possible to evaluate the success likelihood of a concrete project. In this research case study was oriented on integrating the railway into the public urban and suburban transport in the City of Rijeka in Croatia. For this purpose, the relevance of the determined weight factors was used for the concrete project of integration in the City of Rijeka that resulting in 67.17% fulfilment of the successful integration railway into the public urban and suburban transport.","PeriodicalId":23260,"journal":{"name":"Transport","volume":"299 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135350309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

IMPACTS OF LINER SHIPPING CONNECTIVITY AND GLOBAL COMPETITIVENESS ON LOGISTICS PERFORMANCE: THE MEDIATING ROLE OF THE QUALITY OF PORT AND INFRASTRUCTURE 班轮运输连通性和全球竞争力对物流绩效的影响:港口和基础设施质量的中介作用

4区工程技术

Transport Pub Date : 2023-10-05 DOI: 10.3846/transport.2023.19372

Yan-Chun Chen, Mohammad Kamrul Hasan

{"title":"IMPACTS OF LINER SHIPPING CONNECTIVITY AND GLOBAL COMPETITIVENESS ON LOGISTICS PERFORMANCE: THE MEDIATING ROLE OF THE QUALITY OF PORT AND INFRASTRUCTURE","authors":"Yan-Chun Chen, Mohammad Kamrul Hasan","doi":"10.3846/transport.2023.19372","DOIUrl":"https://doi.org/10.3846/transport.2023.19372","url":null,"abstract":"Logistics Performance (LP) is one of the fundamental catalysts that serve as a podium for the integration of the world economy. This study is conducted to observe the combined effects of Liner Shipping Connectivity (LSC) and Global Competitiveness Index (GCI) on LP in mediating the Quality of Port and Infrastructure (PORT). We selected 28 Asian economies and 1 special administrative region (Hong Kong) counting the year of 2007–2018. Partial Least Square – Structural Equation Model (PLS–SEM) with an extension of the Importance–Performance Map Analysis (IPMA) was applied. Empirical evidence derived from the path diagram has revealed that LSC and global competitiveness in mediating the PORT have significant effects of accelerating LP, leading to higher competitiveness in terms of strategic development and yielding better connectivity. Due to limited resources, Asian decision-makers need a guidance to focus on how to improve LP. This work also helps to highlight the dimensions of LSC and global competitiveness factors to be concentrated on and the policies to be implemented in this regard.","PeriodicalId":23260,"journal":{"name":"Transport","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134976737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

APPLICATION OF EXPERT EVALUATION METHODS IN DETERMINING THE SIGNIFICANCE OF CRITERIA FOR USABILITY OF RAILWAY TRACTION ROLLING STOCK 专家评价方法在确定铁路牵引车辆可用性标准意义中的应用

4区工程技术

Transport Pub Date : 2023-09-29 DOI: 10.3846/transport.2023.19407

Lijana Maskeliūnaitė, Laurynas Meilus, Henrikas Sivilevičius

{"title":"APPLICATION OF EXPERT EVALUATION METHODS IN DETERMINING THE SIGNIFICANCE OF CRITERIA FOR USABILITY OF RAILWAY TRACTION ROLLING STOCK","authors":"Lijana Maskeliūnaitė, Laurynas Meilus, Henrikas Sivilevičius","doi":"10.3846/transport.2023.19407","DOIUrl":"https://doi.org/10.3846/transport.2023.19407","url":null,"abstract":"Railway rolling stock must meet the requirements related to its use in the transportation process. The significance of these requirements can be determined using expert testing methods. The current research offers a framework of 9 criteria, which have been developed by the authors of the study, and which contribute to a comprehensive assessment of their importance and priority in relation to each other using expert evaluation methods. The normalised weights of the criteria were determined using Average Rank Transformation Into Weight Linear (ARTIW-L), Average Rank Transformation Into Weight Non-linear (ARTIW-N) and Direct Percentage Weight (DPW) methods. The criteria were given ranks and percentage weights by 18 experts with consistent opinions, which made it reasonable to consider the average of the experts’ opinions as the outcome of the task. The normalised weights of the criteria have shown that the most important issues for the experts included passenger and crew safety (0.1619), passenger and train staff ride comfort (0.1330) and environmental protection (0.1201). The least important criteria for the experts cover the range per one electric charge or full tank of fuel (0.0776), the dynamic performance of the traction rolling stock (0.0849), and the purchase price, the rebate system, the duration of the warranty period (0.0911). The other 3 criteria are of medium importance. The outcomes of this study can be used in deciding on the best alternative for rail traction rolling stock.","PeriodicalId":23260,"journal":{"name":"Transport","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135247578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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