Transportation Engineering最新文献

{"title":"Effect of aging kinetics on the fatigue behavior of asphalt mixtures incorporating various RAP contents","authors":"Mohammed Nouali ,&nbsp;Anne Dony ,&nbsp;Stéphanie Vignaud ,&nbsp;Alan Carter","doi":"10.1016/j.treng.2025.100312","DOIUrl":"10.1016/j.treng.2025.100312","url":null,"abstract":"<div><div>Aging significantly impacts the mechanical performance of asphalt mixtures, particularly in terms of fatigue resistance. Although several studies have investigated the fatigue behavior of asphalt mixtures with and without reclaimed asphalt pavement (RAP), limited research has studied the effect of aging kinetics on the fatigue resistance of asphalt mixtures containing RAP. This study investigates the impact of aging kinetics on the fatigue performance of asphalt concrete (AC) incorporating various RAP contents (0%, 20%, and 40%). All asphalt mixtures were subjected to short-term (STA) and long-term aging (LTA). The stiffness of asphalt mixtures was measured at 15°C and 20°C using the Indirect Tensile Stiffness Modulus (ITSM) test. The effect of aging on the stiffness was evaluated through the Aging Modulus Ratio (AMR). Fatigue performance was estimated using the Indirect Tensile Fatigue Test (ITFT) at 20°C. Recovered binders from AC were characterized using penetration, softening point, and Dynamic Shear Rheometer tests. A new method, comparing mixing rule predictions with real measured binder properties, confirmed full blending between virgin and RAP binders. The mechanical results indicate that the stiffness modulus increased significantly after both short and long-term aging for all mixtures, irrespective of RAP content. Additionally, reclaimed asphalt pavement addition increased the asphalt mixture stiffness for a given aging level. The asphalt mixture with 40% RAP showed greater resistance to aging based on AMR values. Furthermore, reclaimed asphalt pavement addition improved the fatigue performance of asphalt mixtures.</div></div>","PeriodicalId":34480,"journal":{"name":"Transportation Engineering","volume":"19 ","pages":"Article 100312"},"PeriodicalIF":0.0,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143487683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of electric vehicle charging behaviour in existing regional public and workplace charging infrastructure: A case study in the North-East UK","authors":"Yanghanzi Zhang ,&nbsp;Shuo Li ,&nbsp;Phil Blythe ,&nbsp;Josey Wardle ,&nbsp;Colin Herron ,&nbsp;Simon Edwards ,&nbsp;Duo Li ,&nbsp;Yanjie Ji ,&nbsp;Anil Namdeo","doi":"10.1016/j.treng.2025.100309","DOIUrl":"10.1016/j.treng.2025.100309","url":null,"abstract":"<div><div>Public and workplace charging infrastructure plays an important role in supporting electric vehicle (EV) adoption by relieving range anxiety, increasing vehicle utility, and providing charging access for users without home chargers. While previous studies have examined public and workplace charging infrastructure, limited research has explored the impact of charging type and location on charging behaviour using real-world data collected from regional use cases. To address this gap, this study analyses 327,910 real-world charging events from the North-East of the UK to examine the relationship between public and workplace charging infrastructure and EV users' charging behaviours. The results revealed that rapid chargers located in central shopping centres, suburban activity centres, and leisure venues are preferred by EV users with higher usage frequency but still require improved utilisation to achieve commercial viability. Slow and fast chargers’ plug-in time far exceeds the energy delivery duration as they are primarily used for parking rather than charging, suggesting re-introducing parking fees at these chargers may be beneficial. Public on-street and off-street chargers have low usage frequencies, therefore, offering free parking based on demand might increase their utilisation. Workplace chargers exhibit longer plug-in time but lower usage frequency during afternoon peak hours, highlighting the need for strategies such as smart metering and time-of-use pricing to reduce grid pressure. These insights contribute to policy recommendations for optimising public and workplace charging networks to support sustainable EV adoption at the regional level.</div></div>","PeriodicalId":34480,"journal":{"name":"Transportation Engineering","volume":"19 ","pages":"Article 100309"},"PeriodicalIF":0.0,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143464975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of clay materials on phase separation in plastic bag waste-modified bitumen during high-temperature storage","authors":"Mohammed Nouali ,&nbsp;Zohra Derriche ,&nbsp;Elhem Ghorbel","doi":"10.1016/j.treng.2025.100306","DOIUrl":"10.1016/j.treng.2025.100306","url":null,"abstract":"<div><div>Phase separation at high storage temperatures is a significant challenge in the practical application of polymer-modified bitumen (PmB), as it impacts negatively the uniformity and stability of modified binders. This study evaluates the effects of montmorillonite (MMT) and kaolinite clay (KC) additions on phase separation in a High-density polyethylene (HDPE) plastic waste-modified bitumen. Clay minerals are widely studied as compatibilizing agents, that prevent binder phase separation in bitumen/polymer/clay blends as often evaluated through softening point testing. In addition to conventional physical and rheological evaluations, the apparent molecular weight distribution (AMWD) and a new bitumen dissolution test are proposed in this study for the first time to analyze phase separation in bitumen/plastic/clay ternary blends. Results indicate that while clay addition reduces phase separation potential of PmB as indicated by both softening point measurements and rheological derived phase separation indices, AMWD and dissolution test reveal significant phase separation occurs equally in both WP and WP/clay binders. Phase separation phenomenon occurs probably because Van der Waals forces between clay particles are insufficient to counteract the effect of plastic particle coalescence driving forces. As a result of phase separation, plastic particles migrate upward (creaming) and coalesce, while clay particles settle down at the bottom of the binder specimen. These findings demonstrate the limitations of consistency difference and rheological indices when used for evaluating phase separation in ternary blends. The AMWD and dissolution results offer more reliable evaluation methods for assessing phase separation in PmB.</div></div>","PeriodicalId":34480,"journal":{"name":"Transportation Engineering","volume":"19 ","pages":"Article 100306"},"PeriodicalIF":0.0,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low-budget equipment facilitating skid coefficient extraction for traffic accident analysis","authors":"Vinicius Lima ,&nbsp;Umit Karabiyik ,&nbsp;Felipe Kennedy ,&nbsp;Igor Mello ,&nbsp;Jorge Farias ,&nbsp;Manoel Martins","doi":"10.1016/j.treng.2025.100305","DOIUrl":"10.1016/j.treng.2025.100305","url":null,"abstract":"<div><div>Traffic accident reconstructionists play a vital role in providing reliable analyses to justice authorities by examining evidence at accident scenes. Skid marks, a critical form of evidence, are often used to calculate a vehicle's speed. However, this requires the skid coefficient—a parameter influenced by factors such as road conditions, vehicle type, and climate. Many reconstructionists, due to a lack of resources, rely on fixed tables to approximate this coefficient, which can lead to inconsistent results and compromise the accuracy of speed calculations. Existing solutions are either costly or unreliable, further complicating this analysis. This study introduces a cost-effective tool built by forensic experts designed to address these challenges and improve the accuracy of determining the skid coefficient. The device, mounted on a vehicle, features an electromechanical system that ejects ink onto the road surface when brakes are applied, while simultaneously recording the vehicle's speed. This setup enables reconstructionists to dynamically measure the skid coefficient, providing a more precise basis for calculating vehicle speed. Additionally, the device transmits comprehensive logs directly to an investigator's smartphone via email or an Android application, streamlining data collection and analysis. Field tests with three vehicle types—a sedan, a pickup truck, and an 18-wheeler truck, demonstrated the device's reliability and efficiency. Unlike traditional approaches, this solution accounts for skid marks and brake activation, offering a more comprehensive and accurate method for traffic accident reconstruction. By addressing key limitations of existing methods, this tool represents a significant step forward in the field.</div></div>","PeriodicalId":34480,"journal":{"name":"Transportation Engineering","volume":"19 ","pages":"Article 100305"},"PeriodicalIF":0.0,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Eco-driving optimal control for electric vehicles with driver preferences","authors":"Roberto Lot ,&nbsp;James Fleming ,&nbsp;Boli Chen ,&nbsp;Simos Evangelou","doi":"10.1016/j.treng.2025.100302","DOIUrl":"10.1016/j.treng.2025.100302","url":null,"abstract":"<div><div>An optimal control formulation of an eco-driving system for front-wheel drive electric vehicles is proposed in this paper, demonstrating that including an optimal control model of driver preferences in such systems can successfully blend the objective of energy-efficiency with the subjective goals of human drivers, including desired following distances and time headways, a desired vehicle speed, smooth vehicle acceleration, and a comfortable corner negotiation speed. This builds on previous works that developed driver preference models for optimal control, but did not apply them to a realistic model of an EV powertrain to evaluate potential energy savings in practice. The resulting optimal control problem (OCP) is simplified for implementation by using a polynomial approximation of vehicle losses, and a relaxation of regenerative braking constraints that accurately accounts for required braking bias in a front-wheel drive vehicle. In testing, over a simulated 25km journey involving rural, motorway and urban sections, blending driver preferences with energy efficiency in this framework achieves energy savings of 21% with only a 7% decrease in average speed. For car-following scenarios, 10–15% energy savings are achievable with no decrease in average speed.</div></div>","PeriodicalId":34480,"journal":{"name":"Transportation Engineering","volume":"19 ","pages":"Article 100302"},"PeriodicalIF":0.0,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Automatic priority analysis of emergency response systems using internet of things (IoT) and machine learning (ML)","authors":"Abu S.M. Mohsin,&nbsp;Shadab H. Choudhury,&nbsp;Munyem Ahammad Muyeed","doi":"10.1016/j.treng.2025.100304","DOIUrl":"10.1016/j.treng.2025.100304","url":null,"abstract":"<div><div>Effective and timely resource deployment is essential during emergencies. By integrating machine learning (ML) and the Internet of Things (IoT), automatic priority analysis of emergency response systems could revolutionise this vital process, save life and minimize damages. This paper presents a comprehensive framework for deploying an IoT, and ML-driven emergency response system (ERS), which uses real-time data analysis and predictive modelling to identify patterns and prioritise responses based on their expected impact, urgency, distance and available resources. The system is designed to process and analyze diverse data streams from multiple sources, such as IoT sensors, enabling rapid and informed responses to emergencies prioritizing emergency responder (Police, fire brigade, hospital or emergency contacts etc.). The XGBoost model was utilised to prioritise the emergencies, and its performance was examined using accuracy, precision, average recall, and average F-1 score. Additionally, a web dashboard was deployed to visualise sensor and projected data in real-time, guaranteeing accessibility and scalability. This allowed users to engage with the system through an intuitive interface and obtain timely alerts and insights. The system provides dynamic visualisation and real-time tracking of emergency scenarios through the integration of geographical information systems (GIS) and the utilisation of cloud computing resources. This framework not only improves immediate response capabilities but also aids in strategic planning by providing actionable insights into potential future events. The deployment of such an ERS marks a significant step towards smarter, data-driven emergency management, enhancing safety and preparedness at both community and organizational levels. This innovative integration of IoT and ML has the potential to transform emergency response systems, optimizing resource allocation, reducing response times, and ultimately saving more lives in critical situations.</div></div>","PeriodicalId":34480,"journal":{"name":"Transportation Engineering","volume":"19 ","pages":"Article 100304"},"PeriodicalIF":0.0,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical analysis on the influence of nozzles geometrical features on the combustion process of passive pre-chamber turbulent jet ignition engine","authors":"Andrea Piano ,&nbsp;Andrea Scalambro ,&nbsp;Federico Millo ,&nbsp;Paolo Sementa ,&nbsp;Cinzia Tornatore ,&nbsp;Francesco Catapano","doi":"10.1016/j.treng.2025.100301","DOIUrl":"10.1016/j.treng.2025.100301","url":null,"abstract":"<div><div>Engines equipped with pre-chamber technology offer a viable solution for extending the lean ignition limit, thanks to the high ignition energy delivered by the turbulent jets. Multidimensional numerical simulations are a valuable tool to speed up and support the development process of the system, by providing details that cannot be gathered solely from experimental tests. In this study, a 3D-CFD model was validated against experimental data under both stoichiometric and lean conditions in a gasoline engine equipped with a passive pre-chamber, featuring 4 nozzles, each with a 1.0 mm diameter. Afterward, three pre-chamber configurations with variable nozzle cross-sectional area and three geometries with constant nozzle area were analyzed. Among the nozzle configurations with variable cross-sectional area, the pre-chamber with an intermediate nozzle area (4 nozzles, 1.2 mm diameter) leads to the fastest combustion process, reducing combustion duration by 25% compared to the baseline pre-chamber. This is attributed to the improved pre-chamber scavenging, which increases the energy released in the pre-chamber by nearly 25%. This allows the generation of the most intense turbulence, hence increasing the charge entrained by the jets, and finally reducing combustion duration. Conversely, for excessively large total nozzle area (4 nozzles, 1.4 mm diameter), the enhanced scavenging effect is partially offset by the energy losses associated with the ejection of the cold jets, resulting in only a 10% increase in energy released in the pre-chamber compared to the baseline configuration. For the same total nozzle area, when a different number of pre-chamber nozzles is considered, the spatial distribution of the jets plays a crucial role in determining the combustion rate. Indeed, if the number of nozzles is excessively reduced (3 nozzles, 1.4 mm diameter), the consumption of the mixture located between two adjacent jets is delayed, increasing the combustion duration by almost 5% compared to the baseline and 40% compared to the optimal pre-chamber geometry (i.e., 4 nozzles, 1.2 mm).</div></div>","PeriodicalId":34480,"journal":{"name":"Transportation Engineering","volume":"19 ","pages":"Article 100301"},"PeriodicalIF":0.0,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving asphalt concrete durability through soda lignin powder","authors":"Aya K. Albayati,&nbsp;Amjad H. Albayati","doi":"10.1016/j.treng.2024.100300","DOIUrl":"10.1016/j.treng.2024.100300","url":null,"abstract":"<div><div>Lignin has emerged as a promising asphalt binder modifier due to its sustainable and renewable nature, with the potential to improve flexible pavement performance. This study investigates the use of Soda Lignin Powder (SLP), derived from Pinus wood sawdust via alkaline treatment, as an asphalt modifier to enhance mixture durability. SLP was characterized using Fourier Transformation Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), and Scanning Electron Microscopy with Energy Dispersive X-ray Analysis (SEM/EDX), revealing significant changes in its chemical structure post-extraction. These analyses showed the presence of phenolic units, including hydroxyphenyl propane, syringyl, and guaiacyl units. The morphology of SLP was identified as irregular and spherical particles consisting of carbon, oxygen, nitrogen, and sulfur. Experimental evaluations involved three SLP dosages (2 %, 4 %, and 6 % by weight of asphalt binder), with tests for penetration, softening point, ductility and rotational viscosity. Additionally, the asphalt mixtures were tested for their performance in terms of moisture susceptibility, resilient modulus, permanent deformation, and fatigue resistance. Results indicated that SLP effectively reduces the temperature susceptibility of asphalt by increasing its stiffness and rotational viscosity. Furthermore, mixtures with 6 % SLP showed enhanced moisture resistance, with a Tensile Strength Ratio (TSR) of 86.98 %, a 74.1 % reduction in accumulated permanent deformation at 10,000 cycles, and a 38.1 % increase in the Cracking Tolerance Index (CT index) compared to the control mix (0 % SLP content). These findings confirm that SLP has the potential to be an effective additive in the design of asphalt mixture. Moreover, it allows producing endurable mixtures with higher resistance to distress.</div></div>","PeriodicalId":34480,"journal":{"name":"Transportation Engineering","volume":"19 ","pages":"Article 100300"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Promoting sustainable and personalized travel behaviors while preserving data privacy","authors":"Cláudia Brito ,&nbsp;Noela Pina ,&nbsp;Tânia Esteves ,&nbsp;Ricardo Vitorino ,&nbsp;Inês Cunha ,&nbsp;João Paulo","doi":"10.1016/j.treng.2024.100237","DOIUrl":"10.1016/j.treng.2024.100237","url":null,"abstract":"<div><div>Cities worldwide have agreed on ambitious goals regarding carbon neutrality. To do so, policymakers seek ways to foster smarter and cleaner transportation solutions. However, citizens lack awareness of their carbon footprint and of greener mobility alternatives such as public transports. With this, three main challenges emerge: <em>(i)</em> increase users’ awareness regarding their carbon footprint, <em>(ii)</em> provide personalized recommendations and incentives for using sustainable transportation alternatives and, <em>(iii)</em> guarantee that any personal data collected from the user is kept private.</div><div>This paper addresses these challenges by proposing a new methodology. Created under the FranchetAI project, the methodology combines federated Artificial Intelligence (AI) and Greenhouse Gas (GHG) estimation models to calculate the carbon footprint of users when choosing different transportation modes (<em>e.g.</em>, foot, car, bus). Through a mobile application that keeps the privacy of users’ personal information, the project aims at providing detailed reports to inform citizens about their impact on the environment, and an incentive program to promote the usage of more sustainable mobility alternatives.</div></div>","PeriodicalId":34480,"journal":{"name":"Transportation Engineering","volume":"19 ","pages":"Article 100237"},"PeriodicalIF":0.0,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of internal erosion on the hydraulic behavior of gap-graded coarse-fine mixtures: Experimental and mathematical investigations","authors":"Marziyeh Salajegheh ,&nbsp;Mahmoud Yazdani ,&nbsp;Vahid Pachideh","doi":"10.1016/j.treng.2024.100299","DOIUrl":"10.1016/j.treng.2024.100299","url":null,"abstract":"<div><div>Internal erosion is a phenomenon in which fine particles are removed by seepage through pore channels between coarse particles in internally unstable soil. It can lead to widespread pavement collapse or sinkholes, undesirable incidents in tunnel engineering and dike foundations, and clogging of oil wells. The erodibility of soil is influenced by critical factors such as the plasticity index (PI) and fines content (FC). However, the combined effects of these factors on internal erosion remains uncertain. For this reason, in this research a triaxial-erosion apparatus was developed to perform an experimental and mathematical investigation of erosion of sand-fines mixtures. Three different clay-sized particle types (rock powder, kaolinite or bentonite) each with three fines contents 20 %, 25 % and 30 % were used. The results indicated that while the output velocity initially rose rapidly with an increasing hydraulic gradient during the early stages of erosion, hydraulic conductivity eventually decreased due to the clogging of particles in specific areas and the blockage of flow paths. The non-Darcy flow behavior resulting from internal erosion positively impacted seepage control in tested soils. Increasing the PI and fines content enhanced the stability of the sample, as PI had a significant impact on the flow in soils with a higher FC. It was seen that rapid erosion was experienced by rock powder mixtures before stabilization, gradual erosion occurred in bentonite due to high cohesion, and uniform erosion was exhibited by kaolinite without significant flocculation. Following erosion, the granulation results of various soil layers clarified three interconnected internal erosion processes: reattachment, rearrangement, and transport. In this study, an equation is derived that describes the variation in the eroded mass with respect to the hydraulic gradient, time, PI and FC.</div></div>","PeriodicalId":34480,"journal":{"name":"Transportation Engineering","volume":"19 ","pages":"Article 100299"},"PeriodicalIF":0.0,"publicationDate":"2024-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}