Arabian Journal for Science and Engineering最新文献

{"title":"Computational Methods and Representative Cases for Fluid–Structure Interaction in Nuclear Reactor Vessel and Internals","authors":"Pascal Veber,&nbsp;Fredrik Tornberg,&nbsp;Afaque Shams,&nbsp;Osman K. Siddiqui","doi":"10.1007/s13369-024-09856-z","DOIUrl":"10.1007/s13369-024-09856-z","url":null,"abstract":"<div><p>Flow-induced vibration (FIV) in nuclear reactor vessels has been extensively studied during the mechanical design of reactor vessels. Many power plants have increased the interest in coupled modern fluid and solid mechanics codes to facilitate the understanding of the phenomena causing damage to components termed fluid–structure interaction (FSI). A better understanding of these structure interactions is critical for enhancing safety, minimizing radiation risks, improving public health and safety, and fostering innovation in the nuclear industry. Furthermore, it supports nuclear energy as a clean alternative to fossil fuels, contributing to the reduction of global carbon emissions and advancing responsible production and consumption. Pressure wave propagation, acoustic resonance, flow-induced turbulence, and fluid-elastic instability are the four types of FSI-coupled systems that are investigated in this work. Different computational methods are presented to simulate FSI problems and should be selected depending on the physical complexity of the problems. One-way FSI where Computational Fluid Dynamics (CFD) or thermal-hydraulics results are applied on a structural model is common, while FSI calculations with iterative fluid–structure simulations will be more and more available with the increase in computer capacity and the development of a more cost-effective turbulence model. Most modeling results have resulted in errors in the range of ± 10% with the experimental data; however, in some cases, the choice of a different boundary condition has been shown to result in up to 30% errors.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 5","pages":"3591 - 3615"},"PeriodicalIF":2.6,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Systematic Review of Bearing Component Failure: Strategies for Diagnosis and Prognosis in Rotating Machinery","authors":"Krish K. Raj,&nbsp;Shahil Kumar,&nbsp;Rahul R. Kumar","doi":"10.1007/s13369-024-09866-x","DOIUrl":"10.1007/s13369-024-09866-x","url":null,"abstract":"<div><p>The rapid advancement of industrial technologies has underscored the importance of effective diagnosis and prognosis in equipment maintenance to ensure safe operations. This is particularly critical in rotating machinery (RM), where bearing components play a pivotal role in determining the health and lifespan of systems such as wind turbines and high-speed trains. With the expanding application of bearings, the literature on predicting remaining useful life (RUL) and fault classification has become increasingly vital. This review paper provides a comprehensive overview of the current research on diagnosis and prognosis strategies for bearing-related faults and anomalies. Initially, it presents updated fault statistics in RMs, offering a detailed analysis and summary of fault cases, their effects, and identification techniques. The paper then delves into theoretical insights into fault frequencies and the latest failure detection strategies for bearing elements, emphasizing current and vibration analysis. The review further assesses advancements in sensor technologies for data acquisition and examines the most utilized bearing data repositories for fault classification and run-to-failure analysis. Additionally, it also explores the recent literature on fault diagnosis strategies for bearings, categorizing the approaches into model-based, knowledge-based, and pattern recognition frameworks. Regarding prognosis, the paper reviews methodologies grounded in statistical, model-based, and data-driven strategies. By highlighting contributions from the past five years, this paper aims to provide a thorough analysis of methodologies in the diagnosis and prognosis of bearing faults, offering valuable insights and directions for future research in this critical field.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 8","pages":"5353 - 5375"},"PeriodicalIF":2.6,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143856500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Reconfigurable Mem-Element Using CMOS Current Amplifiers","authors":"Ibrahim Alkhalifa,&nbsp;Hussain Alzaher","doi":"10.1007/s13369-024-09867-w","DOIUrl":"10.1007/s13369-024-09867-w","url":null,"abstract":"<div><p>There is a plethora of mem-element emulators using different active devices, current amplifier (CA) based memristor, memcapacitors, and meminductor have not been reported in the literature. Although the CA is one of the four fundamental amplifier types, its applications has been limited because synthesis of CA based circuits is challenging. The main contributions of this paper are presenting these missing emulator circuits and demonstrating the realization of a novel universal reconfigurable mem-element using CAs realized in CMOS technology. Since CAs have the potential advantage of offering wide bandwidth compared to its voltage-mode counterparts, these new circuits inherently would exhibit improved frequency response. Various types of mem-elements using only CAs and a multiplier are developed in this work. Starting from the mathematical foundation of the linear model of a mem-element, this work provides a systematic approach leading to the design of a novel reconfigurable mem-element based on CAs. The proposed mem-elements are designed in 180 nm TSMC CMOS process. Cadence simulations show an operating frequency up to 1 MHz while consuming less than 3 mW. Also, experimental results using a prototype implemented using commercially available ICs show the validity of the proposed designs.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 8","pages":"6181 - 6191"},"PeriodicalIF":2.6,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143856499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural Health Monitoring of Nuclear Site Facilities Using Optimal Sensor Placement for Damage Detection and Prediction of Failure","authors":"Asad Muhammad Butt","doi":"10.1007/s13369-024-09853-2","DOIUrl":"10.1007/s13369-024-09853-2","url":null,"abstract":"<div><p>The structural components of nuclear power plants (NPPs) and their support systems are built to endure a variety of thermal, vibrational, and fatigue loads. These structures are vulnerable to damage from unanticipated events, even with rigorous design considerations. There is a real risk of nuclear radiation leaks, infrastructure destruction, and human casualties. Continuous structural health monitoring of such structures guarantees safety and effective maintenance procedures, preventing disastrous consequences. The use of finite element analysis (FEA) offers a useful perspective on the behavior of structures when they are in use. With fewer sensors, optimal sensor placement (OSP) offers crucial and economical structural insight. Using a reduced order FE model for complete field estimation of the structural behavior is possible when using the OSP approach via FEA. A System Equivalent Reduction Expansion Process (SEREP) and a D-Optimal approach have been employed in tandem for sensor placement and complete field estimation of the measured, respectively. Three test scenarios, where simple structural elements like plates and beams with different boundary conditions are subjected to impact and single point harmonic loads are employed. It has been demonstrated that when strain data is gathered at the optimal sensor locations, it can be used to recreate fairly accurately structural dynamic response when seen at various time instances. The complete field strain/displacement fields for the structures made it possible to pinpoint the location and magnitude of the load. Force prediction error was recorded as low as 11% for a cantilever beam and 13% in case of all sides clamped plate. The problem formulation through this work gives an advantage to utilize the FEA environment provided by COMSOL and using the solution file to extract data in the MATLAB LiveLink environment. Also, execution of D-Optimal function in MATLAB and custom sensor placement studies along with the detection of force through SEREP expansion was the ultimate goal. In order to provide a thorough and in-depth monitoring of NPP structures and to prevent damages and failures due to unidentified cause(s), it is suggested that the above technique be applied to structures like reactors, boilers, and pipes in nuclear facilities.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 5","pages":"3579 - 3590"},"PeriodicalIF":2.6,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"AI-Powered Microgrid Networks: Multi-Agent Deep Reinforcement Learning for Optimized Energy Trading in Interconnected Systems","authors":"Ahmad Alferidi,&nbsp;Mohammed Alsolami,&nbsp;Badr Lami,&nbsp;Sami Ben Slama","doi":"10.1007/s13369-024-09754-4","DOIUrl":"10.1007/s13369-024-09754-4","url":null,"abstract":"<div><p>Intelligent smart microgrids have been identified as a subject of significant research interest, given their potential to optimize energy consumption in residential contexts. The growing utilization of intelligent appliances and the integration of renewable energy sources, including distributed generation (DG) and electric vehicles (EVs), have increased energy demand. This paper presents an artificial intelligence (AI) system that employs deep reinforcement learning to facilitate efficient device scheduling and peer-to-peer (P2P) energy trading within microgrids. The system accommodates users with varying access levels to distributed generation (DG), battery storage, and electric vehicles (EVs). The real-time pricing and demand response mechanisms enable the system to adapt to fluctuating energy requirements. In contrast, surplus energy is shared through a peer-to-peer network, reducing grid dependency. The approach was validated using an experimental database from Saudi Arabia, demonstrating a notable reduction in electricity costs for participants.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 8","pages":"6157 - 6179"},"PeriodicalIF":2.6,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143856570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental and Numerical Investigation of Thermal Behavior of a Novel Cylindrical Solar Collector with the Utility of a Phase Change Material","authors":"Yassmine Rghif,&nbsp;Asaad H. Sayer,&nbsp;Daniele Colarossi,&nbsp;Hameed B. Mahood","doi":"10.1007/s13369-024-09847-0","DOIUrl":"10.1007/s13369-024-09847-0","url":null,"abstract":"<div><p>In this paper, an experimental and numerical investigation of the thermal behavior of a novel solar collector was performed. This last one is cylindrically shaped and comprises four layers: Pebble layer, phase change material (PCM) layer and two air layers separated by a plastic cover layer. The motivation for selecting four layers is to reduce the heat loss caused by the continuous convection heat transfer. The experimental solar collector was thermally insulated and covered with a plastic cover at the top. The experimental setup was built and operated in an arid area at the University of Thi-Qar in the city of Nasiriya in Iraq for 20 days (from 10 November 2022 to 30 November 2022). During this period, layer temperatures were measured using K-type thermocouples. A numerical model was developed based on the energy balance of each solar collector layer; the forward Euler method and MATLAB computational program were utilized to solve the formed equations. Comparisons between experimental and numerical results showed acceptable agreements with relative errors of 1.81%, 3.21% and 3.68% for the first air layer, second air layer and PCM layer, respectively. After the model validation, the numerical model was used to simulate the thermal behavior of the solar collector during the whole year of 2022. The results showed that the temperature varies from −2 °C to about 66 °C during the year, with a difference of 15.52 °C in July and around 6.84 °C in December. Additionally, the temperature of PCM reached a maximum of around 63 °C in June and over 54 °C in the same month for the pebble layer.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 6","pages":"4383 - 4396"},"PeriodicalIF":2.6,"publicationDate":"2024-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143581146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Novel Robust-Adaptive Control Methodology for Sign-Consensus of Multi-agent Systems Under Signed Graphs and External Disturbances","authors":"Aneeba Khaliq,&nbsp;Muhammad Rehan,&nbsp;Ijaz Ahmed,&nbsp;Umair Rashid,&nbsp;Muhammad Khalid","doi":"10.1007/s13369-024-09826-5","DOIUrl":"10.1007/s13369-024-09826-5","url":null,"abstract":"<div><p>The purpose of the consensus control of multi-agent systems is to attain an agreement between agents via a cooperative controller. Sign-consensus allows to attain an agreement between agents with different strengths of their opinions. However, the existing methods lack in developing the robust-adaptive methods to select the control gains as per need and to attain robustness against perturbations. This paper addresses the sign-consensus of multi-agents, modeled as generic linear time-invariant systems, by intruding amplitude-bounded and energy-bounded disturbances by considering the communication network as a signed graph. In a signed graph, both cooperative and competitive interactions coexist between agents, and the aim of this study is to explore fully distributed methods for achieving the sign-consensus (rather than the conventional complete consensus). Mainly, two techniques for attaining the sign-consensus have been addressed: the former is an exponentially uniformly ultimately bounded-based controller for amplitude-bounded disturbances, and the latter is an energy-based controller for the energy-bounded disturbances. To the best of our knowledge, no previous research work is available on achieving an exponentially fully distributed sign-consensus controller by considering disturbances to limit the divergence of adaptive parameters. Numerical simulation results of the proposed two methods for both amplitude-limited and energy-bounded disturbances have been provided. The results have been applied to seven agents over bidirectional signed graphs. The agents in both scenarios achieve coherent behaviors with different magnitudes. In addition, the coupling weights also adapt as per the requirement.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 8","pages":"6141 - 6156"},"PeriodicalIF":2.6,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143856599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electric Mobility Challenges and Approaches for Sustainable Green Power Synergy in Smart Cities","authors":"Ijaz Ahmed,&nbsp;Abdul Basit,&nbsp;Muhammad Ahmad,&nbsp;Mohammad AlMuhaini,&nbsp;Muhammad Khalid","doi":"10.1007/s13369-024-09838-1","DOIUrl":"10.1007/s13369-024-09838-1","url":null,"abstract":"<div><p>The escalating energy crisis, heightened ecological awareness, and the negative consequences of global warming have driven governments to enact strategies focused on curbing greenhouse gas (GHG) emissions. To achieve their goals, they have embraced renewable energy options as a feasible means of providing power to mass transient systems (the transit of individuals within metropolitan regions via collective transportation systems such as metro-lines and bus networks). The U.S. Department of Energy projects that electric vehicles (EVs) will utilize their power source approximately sixty percent efficiently during motion, making them nearly twice as efficient as conventional petroleum or gasoline-powered cars. The effectiveness of electric mobility in mitigating greenhouse gas emissions depends on the energy source that fuels them. This study explores four crucial elements of EV charging facilities: the incorporation of eco-friendly charging methods with clean power resources (CPRs), the involvement of energy providers, the challenges faced, and the potential opportunities. The aim of this study is to evaluate the viability of CPR as a feasible charging option for EVs in smart cities. This study provides an analysis of the present status of CPR systems employed in electric mobility recharging. It encompasses a comprehensive examination of their extensive adoption, advantages, drawbacks, and the prominent nations that have embraced their implementation. Next, we provide a detailed analysis, emphasizing energy-saving innovations, recharging mechanisms, electronic components associated with these innovations, and their potential application in energy hubs. The objective of this study is to enhance the successful integration of CPR in electric mobility. We then conducted an extensive examination of various advanced charging methodologies implemented by corporations in tandem with CPR technology, taking into account the current global trend in EV power consumption. Finally, in light of the inherent constraints linked to attaining an environmentally friendly shift, we examine the scientific barriers and potential prospects associated with grid connectivity, upgrading, standardized practices, servicing, data privacy, and maximizing resource utilization. The authors express their belief that our work contributes to the growing body of knowledge at the intersection of artificial intelligence and energy systems, presenting a comprehensive overview of the advancements, opportunities, and challenges in achieving sustainable green power synergy in smart cities. This work will also serve as a significant resource for various stakeholders, including city administrators, policymakers, and individuals involved in scholarly communication. They anticipate that it will contribute to a better understanding of the subject matter and facilitate pertinent research in this specific area of study.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 8","pages":"5323 - 5351"},"PeriodicalIF":2.6,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143856504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Synergistic Fractional-Order Control for Precise Helical Trajectory Tracking and Formation Stability in Multi-Agent Quadrotor UAVs","authors":"Ghulam E Mustafa Abro,&nbsp;Ayman M. Abdallah","doi":"10.1007/s13369-024-09849-y","DOIUrl":"10.1007/s13369-024-09849-y","url":null,"abstract":"<div><p>The present study introduces a cohesive hybrid control strategy designed to improve helical trajectory tracking accuracy and formation stability for quadrotor unmanned aerial vehicles (QUAVs) in multi-agent, real-world environments. In these applications, accurate trajectory tracking and stable formation maintenance are interrelated issues, as disturbances and uncertainties in dynamic environments can compromise both individual path-following precision and group coordination. To tackle these interrelated challenges, we present a fractional-order proportional–integral–derivative (FOPID) controller that enhances transient response, minimises overshoot for accurate helical trajectory tracking and improves robustness against disturbances, thereby benefiting the overall stability of the formation. Furthermore, our methodology incorporates a decentralised nonlinear formation control strategy grounded in consensus and vector field path following. This enables QUAVs to sustain adaptable and dependable circular forms without necessitating fixed placements, hence facilitating flexible coordination in dynamic settings. The stability of trajectory tracking and formation control is assured by Lyapunov's direct technique and the Grönwall–Bellman lemma, ensuring global asymptotic stability for the entire system. Through the validation of the hybrid control framework via simulation and hardware tests, we illustrate its efficacy in attaining accurate trajectory tracking and resilient formation maintenance as interdependent goals. This study enhances UAV control for intricate multi-agent applications, including aerial surveillance, environmental monitoring, and search and rescue operations, by providing a unified and flexible control solution adept at managing interrelated tracking and formation tasks in practical scenarios.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 8","pages":"6121 - 6140"},"PeriodicalIF":2.6,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143856447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance Analysis of Energy Harvesting in Dense Urban Millimeter-Wave Cellular Network Using Stochastic Geometry","authors":"Mohammed Mehdi Saleh,&nbsp;Nor Aishah Muhammad,&nbsp;Norhudah Seman,&nbsp;Nur Ilyana Anwar Apandi,&nbsp;Marwan Hadri Azmi","doi":"10.1007/s13369-024-09766-0","DOIUrl":"10.1007/s13369-024-09766-0","url":null,"abstract":"<div><p>Energy harvesting (EH) in millimeter-wave (mm-wave) cellular networks has recently gained considerable interest due to the extensive use of massive antenna arrays and the dense deployment of base stations (BSs). Solid objects can easily block mm-wave signals, leading to high path losses, which result in non-line-of-sight (NLOS) conditions and signal outages. This paper presents an analytical framework to evaluate the energy coverage probability (ECP) performance of typical user equipment (TUE) in mm-wave cellular networks employing stochastic geometry. We utilize a line-of-sight (LOS) ball model to incorporate the blockage effects and derive a closed-form expression for the ECP. We compare the ECP derived from the LOS ball model with that from random shape blockage models, which are adapted to urban building data for Austin and Los Angeles. We also investigate the impact of varying the LOS ball radius on ECP performance. The derived ECP expression proves analytically tractable, enabling further analysis. The results show that the LOS ball model effectively characterizes the effect of blockages, similar to the random shape model. Furthermore, the findings demonstrate that increasing the density of BSs leads to an increasing trend in the ECP, making the influence of NLOS links negligible compared to that of LOS links. The reason is that dense BS deployment enhances the likelihood of having an LOS link between the BS and the UE. This study provides valuable insights for developing efficient wireless EH systems in mm-wave networks by leveraging higher BS density and enhancing LOS conditions.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 8","pages":"6109 - 6119"},"PeriodicalIF":2.6,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143856446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}