Journal of Traffic and Transportation Engineering-English Edition最新文献

{"title":"A critical review of heavy metal characteristics and risk assessment approaches of municipal solid waste incineration bottom ash in subgrade construction","authors":"Jue Li ,&nbsp;Qingmeng Hou ,&nbsp;Junhui Peng ,&nbsp;Hengwu Hu ,&nbsp;Domenico Vizzari","doi":"10.1016/j.jtte.2025.02.004","DOIUrl":"10.1016/j.jtte.2025.02.004","url":null,"abstract":"<div><div>The global generation of municipal solid waste (MSW) has significantly escalated and it is nowadays an urgent environmental problem. Incineration has emerged as a prevalent MSW treatment method, with the resulting MSW incineration bottom ash (MSWI BA) offering potential for beneficial reuse, particularly in subgrade construction. However, concerns persist in terms of long-term leaching and ecotoxicity of MSWI BA heavy metals. This critical review consolidates the existing research on the physicochemical properties of MSWI BA, its heavy metal characteristics, and the associated risk management strategies for its reuse in road construction applications. The review systematically analyzes the physical and chemical properties of MSWI BA, confirming its suitability as a construction aggregate. It further examines the typical heavy metal content, including Pb, Zn, Cu, and Cr, and the influential factors such as waste composition, incineration temperature, and flue gas treatment. The leaching behavior of heavy metals under different environmental conditions is investigated through the synthesis of laboratory test data and field monitoring results. Common risk assessment methods at various stages, from BA pretreatment to subgrade design, are evaluated. Additionally, the review summarizes the regulatory standards for MSWI BA application in road construction across different regions, identifies current research limitations, and provides suggestions for future research directions to promote the sustainable utilization of this valuable resource. The findings of this comprehensive review contribute to a better understanding of the feasibility and environmental implications of MSWI BA reuse, supporting informed decision-making and the development of effective management strategies for this growing waste stream. The insights gained can aid in the design of appropriate treatment and application protocols to mitigate the risks associated with heavy metal leaching, thereby facilitating the circular economy in the subgrade construction.</div></div>","PeriodicalId":47239,"journal":{"name":"Journal of Traffic and Transportation Engineering-English Edition","volume":"12 5","pages":"Pages 1150-1173"},"PeriodicalIF":6.8,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145435409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing sustainable urban mobility: Computer vision applications in pedestrian path studies","authors":"Abdul-Mugis Yussif ,&nbsp;Ridwan Taiwo ,&nbsp;Tarek Zayed ,&nbsp;Saeed Reza Mohandes ,&nbsp;Sulemana Fatoama Abdulai","doi":"10.1016/j.jtte.2024.11.007","DOIUrl":"10.1016/j.jtte.2024.11.007","url":null,"abstract":"<div><div>Smart cities and decarbonization of the transportation sector provoked significant environmental policy reforms, shifting the urban environment away from car-centric planning to non-mechanized transportation. Thus, walking and cycling became natural alternatives due to their zero-carbon operation and health benefits. Computer vision (CV) techniques offer promising capabilities for analyzing and improving pedestrian sidewalk infrastructure and usage. Despite the current efforts, the literature lacks a comprehensive synthesis of studies applying CV to sidewalks, casting a shadow on the utilization of further artificial-based algorithms in this domain. Hence, this study provides a state-of-the-art analysis of CV applications on sidewalks by presenting 1) a scientometric analysis of existing studies, 2) systematic discussions of CV applications and architectures, 3) proposal of a framework for applying CV in sidewalk studies, and 4) existing gaps and future research opportunities. The publication trend analysis indicated accelerated growth in sidewalk-focused CV research since 2018, with peaks in the last five years, indicating rising scholarly interest. The keyword analysis revealed seven clusters, where “pavements”, “computer vision”, and “deep learning” are the top keywords based on their degree centrality. The systematic analysis identified and discussed CV applications to sidewalk accessibility, path conditions, and user behaviors, showing that convolutional neural networks are the most adopted architecture in this domain. This study offers academics and industry professionals essential perspectives into the developing research area of leveraging CV for analyzing diverse facets of sidewalks. It highlights the imperative to tackle identified research gaps via innovative techniques and collaborative efforts, in addition to openly sharing datasets and source code.</div></div>","PeriodicalId":47239,"journal":{"name":"Journal of Traffic and Transportation Engineering-English Edition","volume":"12 5","pages":"Pages 1415-1451"},"PeriodicalIF":6.8,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145435411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A review on the influence of in-cylinder turbulence type on combustion characteristics of high power-density diesel engine","authors":"Zhongxi Tong ,&nbsp;Han Wu ,&nbsp;Zhicheng Shi ,&nbsp;Leonid Myagkov","doi":"10.1016/j.jtte.2024.09.008","DOIUrl":"10.1016/j.jtte.2024.09.008","url":null,"abstract":"<div><div>With the continuous improvement of performance requirements, direct injection diesel engines have gradually developed towards more small, lightweight, and high power, named as high power-density. It needs more injected fuel can be mixed and burn at the same duration time to guarantee the thermal-power conversion effects. It is required that the combustion system has a fast mixing speed of fuel and gas, and a fast combustion speed. Organizing appropriate cylinder turbulence is an effective means of optimizing combustion to reach requirements. The current work is aim to investigates and summarizes the influence of different types of in cylinder turbulence coursed by intake, spray, and combustion chamber configuration on the performance of a highly intensified diesel engine from the three causes of turbulence. The comparative study found that the adoption of a separate combustion chamber, the increase of intake swirl and number of nozzles can have positive effect on the optimization of the combustion process of a highly intensified diesel engine, but for different combustion chamber types, the influence of intake swirl and spray parameters was different. The separated combustion chamber is more sensitive to spray parameters than the combustion chamber without wall guide design. Compared with the transverse separated combustion chamber, the longitudinal separated combustion chamber is more suitable for large intake swirl ratio. For a specific combustion chamber structure, both intake swirl and spray parameters have optimal values.</div></div>","PeriodicalId":47239,"journal":{"name":"Journal of Traffic and Transportation Engineering-English Edition","volume":"12 5","pages":"Pages 1375-1396"},"PeriodicalIF":6.8,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145435414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of differential scanning calorimetry as advanced asphalt testing technology: A comprehensive review","authors":"Hangtian Ni ,&nbsp;Jianmin Ma ,&nbsp;Daquan Sun ,&nbsp;Lei Xu ,&nbsp;Senlin Ling ,&nbsp;Mingjun Hu","doi":"10.1016/j.jtte.2024.10.003","DOIUrl":"10.1016/j.jtte.2024.10.003","url":null,"abstract":"<div><div>Understanding thermal mechanisms is crucial for the selection, modification, and application of asphalt binders. Differential scanning calorimetry (DSC), a sensitive calorimetric technique, enables quantitative assessment of heat-flow responses and reveals underlying processes. This review summarizes the principles and parameter choices of conventional DSC and modulated temperature DSC, covering specimen mass, heating and cooling rates, purge gas, and baseline treatment, and outlines practical workflows for erasing or preserving thermal history, configuring thermal cycles, and implementing isothermal holds. In terms of applications, DSC determines glass transition temperature, crystallization and melting behavior, enthalpy relaxation, and heat capacity; relates thermal signatures to rheology and to performance at low and high temperatures; and investigates oxidative and thermoreversible aging through kinetic analysis. For modified binders, DSC elucidates modification mechanisms, estimates modifier content, assesses compatibility, and evaluates storage stability and the tendency toward phase separation. The technique offers high precision with small sample requirements, enabling differentiation among asphalt sources and grades, analysis of thermal history, and rapid screening. Nevertheless, limitations persist, including thermal gradients, volatilization losses, and baseline drift. Coupling with dynamic shear rheometry, thermogravimetric analysis, infrared spectroscopy, and microscopy further connects thermodynamic features to microstructure and functional performance. Future directions include establishing standardized test protocols, extracting more detailed information from DSC and linking it more directly to asphalt pavement performance, building thermal fingerprint databases for identification and quality control, and developing efficient workflows that support materials design.</div></div>","PeriodicalId":47239,"journal":{"name":"Journal of Traffic and Transportation Engineering-English Edition","volume":"12 5","pages":"Pages 1174-1209"},"PeriodicalIF":6.8,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145435358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of the cooling performance based on the three-dimensional magnetic-thermal coupling in high-speed permanent magnet synchronous motor","authors":"Lingzi Wang,&nbsp;Yifan Wu,&nbsp;Yi Guo,&nbsp;Jianmei Feng,&nbsp;Xueyuan Peng","doi":"10.1016/j.jtte.2025.03.003","DOIUrl":"10.1016/j.jtte.2025.03.003","url":null,"abstract":"<div><div>The high-speed permanent magnet synchronous motors (HSPMSM) serve as the primary driving mechanism for the air compressor within the hydrogen fuel cell system; however, the heating problem is serious in HSPMSM and the heat is difficult to dissipate, which leads to severe challenges to the life and safety of the hydrogen fuel cell system. To solve this problem, an accurate indirect magnetothermal coupling analysis model was established to obtain the temperature characteristics of the HSPMSM. The loss of HSPMSM was analyzed initially, followed by an investigation into the interplay between the temperature and electromagnetic fields. Utilizing this model, the cooling efficiency of the axial channel and circumferential parallel channel were compared, and the temperature distribution considering the influence of the load and the high-temperature gas on the load side of the air compressor was analyzed. The findings suggest that, for the centrifugal compressor motors utilized in hydrogen fuel cell systems, the axial cooling waterway is recommended.</div></div>","PeriodicalId":47239,"journal":{"name":"Journal of Traffic and Transportation Engineering-English Edition","volume":"12 5","pages":"Pages 1397-1414"},"PeriodicalIF":6.8,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145435412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Methodologies for highway maintenance cost-effectiveness: A review","authors":"Xuelian Wu ,&nbsp;Xiaoli Shi ,&nbsp;Xiaotian Gong ,&nbsp;Xuancang Wang ,&nbsp;Wenliang Chen","doi":"10.1016/j.jtte.2024.04.011","DOIUrl":"10.1016/j.jtte.2024.04.011","url":null,"abstract":"<div><div>Highway maintenance cost-effectiveness analysis is critical in highway maintenance management. It provides the methodologies for highway managers to make decisions on the time, location, actions, and feasibility of maintenance implementation for a single maintenance section or the whole highway network. This paper aims to provide a comprehensive review of the methodologies used to evaluate the cost-effectiveness of highway maintenance, assess the applicability of various methods, pinpoint research gaps in existing literature, and offer research directions for the future. First, the cost-effectiveness hotspots are analyzed using bibliometric methods, and then highway maintenance effectiveness indicators, maintenance cost indicators, and methodologies for evaluating maintenance cost-effectiveness are reviewed. Four types of highway maintenance effectiveness indicators are considered: performance indicators, time indicators, environment indicators, and social indicators. Maintenance cost indicators are categorized into three categories: maintenance treatment costs, maintenance expenditures, and user costs. To analyze maintenance cost-effectiveness, the life-cycle cost approach (LCCA) and the combination of cost and effectiveness approach (CCEA) are two ways that have been investigated. According to the findings, it is essential to select an appropriate performance index and then forecast the performance of highway assets, which is the premise of calculating many kinds of maintenance effectiveness indicators. Additionally, studying from a life cycle perspective is a research hotspot, but there is a lack of utilization of maintenance cost prediction models, and user costs are not fully considered. Especially, the respective weight of maintenance expenditures and user costs. It is suggested that future maintenance cost-effectiveness evaluation should trade off the four dimensions of technology, economy, environment, and society from a life cycle perspective. Besides, more hybrid approaches capable of leveraging the merits of multiple approaches should be studied for cost-effectiveness analysis. These findings give some suggestions for further study of cost-effectiveness and also provide a theoretical basis for scientific highway maintenance management.</div></div>","PeriodicalId":47239,"journal":{"name":"Journal of Traffic and Transportation Engineering-English Edition","volume":"12 5","pages":"Pages 1508-1531"},"PeriodicalIF":6.8,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145435415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating the driving comfort on urban self-luminous pavements based on human-machine interaction","authors":"Wentong Wang ,&nbsp;Wenxiu Jiao ,&nbsp;Aimin Sha ,&nbsp;Xinzhou Li ,&nbsp;Fan Zhang ,&nbsp;Wei Jiang ,&nbsp;Dongdong Yuan","doi":"10.1016/j.jtte.2023.04.011","DOIUrl":"10.1016/j.jtte.2023.04.011","url":null,"abstract":"<div><div>Paving self-luminous roads in cities has social and environmental benefits, including relieving the pressure on urban power generation and improving energy security. Drivers perceive pavement brightness as an important indicator of driving comfort. In the current state of knowledge, a thorough association between drivers' perceptions of comfort and driving brightness has not yet been demonstrated. In four districts of Xi'an, China, 67 urban road sections were first selected for night-time pavement illuminance measurements under different light environments, and night-time pavement illuminance zoning was completed. Optical parameters (pavement reflectance ratio, retro reflectance coefficient, chromaticity coordinates, and luminous pavement brightness) of self-luminous pavements were measured in the laboratory. Further, a self-luminous simulation road model was established using the DIALux Evo software. The visual signals of the driver (pupil diameter and obstacle gaze time) were collected and evaluated for comfort according to a human-machine interactive visual event acquisition system. Based on the association between driving brightness and respondents' reported subjective perceptions in the survey, the acceptable rate, comfort level, and brightness detectable level limits were created. The results indicated that a significant visual difference between the three self-luminous roads (high, medium-high, and low illuminations) and the target obstacle exists. The comfort level, acceptability, and brightness perception levels first decreased and then increased with an increase in brightness. The results of this study will help guide the comfort evaluation of luminous pavements and further promote functional research on self-luminous pavements.</div></div>","PeriodicalId":47239,"journal":{"name":"Journal of Traffic and Transportation Engineering-English Edition","volume":"12 5","pages":"Pages 1210-1227"},"PeriodicalIF":6.8,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145435357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research hotspots and trend analysis of intelligent asphalt pavement technology based on CiteSpace","authors":"Lei Chen ,&nbsp;Yucong Wang ,&nbsp;Wenxuan Li ,&nbsp;Qian Chen ,&nbsp;Chaohui Wang","doi":"10.1016/j.jtte.2025.07.002","DOIUrl":"10.1016/j.jtte.2025.07.002","url":null,"abstract":"<div><div>Based on the visualization analysis method of bibliometrics, 1268 core academic papers in the fields of self-sensing, self-energy harvesting, self-snow melting, self-cleaning, self-temperature regulation, and self-healing from January 2020 to June 2025 were summarized using literature on intelligent asphalt pavement technology collected from China National Knowledge Infrastructure and Web of Science databases as data sources. The changes in the number of publications on intelligent asphalt pavement technology at different times and in various countries and their underlying relationships were explored. The knowledge structure and research hotspots in this field were revealed. It provides hot clues and prospects for intelligent asphalt pavement technology research. The results indicate that the number of research publications on intelligent asphalt pavement technology is rising. The types of disciplines are showing a trend of diversified interdisciplinary development. According to the knowledge graph analysis, future research in intelligent asphalt pavement technology will tend to focus on six areas: multi-factor intelligent sensing data analysis, intelligent allocation and complementary self-consistency of road energy, development of hydrophobic coatings for pavements, synthesis of long-lasting smoke suppression and air purification materials for the entire lifecycle, novel phase change materials and their performance regulation, and exploration of prediction models and mechanisms for self-healing effects.</div></div>","PeriodicalId":47239,"journal":{"name":"Journal of Traffic and Transportation Engineering-English Edition","volume":"12 5","pages":"Pages 1297-1329"},"PeriodicalIF":6.8,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145435406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Waste cooking oil potential as a green rejuvenator to restore the aged binder properties in reclaimed asphalt pavement: A state-of-the-art review","authors":"Waqar Ahmed Gul ,&nbsp;Mohd Rosli Mohd Hasan ,&nbsp;Mohammed Jameel ,&nbsp;Kamaluddin Kamal ,&nbsp;Mohd Fahmi Haikal Mohd Ghazali ,&nbsp;Zulfirdaus Zakaria ,&nbsp;Xu Yang","doi":"10.1016/j.jtte.2025.03.002","DOIUrl":"10.1016/j.jtte.2025.03.002","url":null,"abstract":"<div><div>Reclaimed asphalt pavement (RAP) is a byproduct of milling flexible pavements and is typically used in recycling initiatives worldwide. The excessive dosage of RAP can have negative effects on asphalt mixture properties unless it goes through a rejuvenation process. Waste cooking oil (WCO) is one of the green solutions for rejuvenating aged binder in asphaltic concrete, and, like virgin asphalt binder, it contains light oil components. This review article offers current information on WCO's rejuvenating performance and the effect of its variable dosage on binders of varying grades. Several physical and rheological characteristics were investigated, and an appropriate spectrum of reported data was defined for the virgin and rejuvenated binders to ascertain the distinctive characteristics. Additionally, the effect of WCO on binders' asphaltene content, molecular structure, microscopic morphology, mechanical properties, and aging indices was discussed. In the high point of this review, a data range is developed for rejuvenated aged binders based on different properties prior to making a better prediction under different circumstances. Moreover, an optimum value is discussed suggesting the best balance between fatigue performance and rutting resistance. The aged binders modified with WCO exhibit better microchemical properties and particle orientation, with enhanced surface area and coating with aggregates, imitating the micropattern of conventional asphalt binder. Moreover, this review further discusses the economic and ecological aspects of WCO usage as a green asphalt binder rejuvenator.</div></div>","PeriodicalId":47239,"journal":{"name":"Journal of Traffic and Transportation Engineering-English Edition","volume":"12 5","pages":"Pages 1125-1149"},"PeriodicalIF":6.8,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145435410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A review of contact angle measurements for the characterization of pavement materials","authors":"M.A. Dalhat","doi":"10.1016/j.jtte.2024.09.009","DOIUrl":"10.1016/j.jtte.2024.09.009","url":null,"abstract":"<div><div>Contact angle (CA) is an important material characteristic in the field of pavement materials. It has been instrumental to the development of new and evolving research areas such as the adhesion of pavement components, hydrophobic and superhydrophobic concretes, etc. Yet, there are several inconsistencies between studies when it comes to the CA characterization of various pavement materials. This is in part due to the lack of sufficient research and proper documentation of existing knowledge on the CA characterization of pavement materials. This current study has documented and analyzed the processes of measuring the CA of various pavement materials. This includes sample preparation, test conditions, and recommended practices. Studies on the refinement of existing methods for the estimation of CA were also reviewed. The relationships between CA and various pavement and material performances were also reviewed. The increased need for resilient pavements calls for the search for new and effective material characteristics parameters. CA measurements have the potential to change how the properties of fresh cementitious mixes are being assessed. The sessile drop method offers more flexibility for characterizing the CA of pavement materials. The potential application of CA for the improvement and development of new material performance characteristics was discussed. Insights on ways to advance the evaluation of hydrophobic characteristics of pavements were outlined. For example, the use of de-ionized or distilled water for the assessment of hydrophobic properties of concrete does not reflect the moisture condition in the field. CA measurements at different water PH levels should be carried out to replicate the true service condition of the concretes.</div></div>","PeriodicalId":47239,"journal":{"name":"Journal of Traffic and Transportation Engineering-English Edition","volume":"12 5","pages":"Pages 1271-1296"},"PeriodicalIF":6.8,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145435407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}