Ain Shams Engineering Journal最新文献

Unveiling robust security: Chaotic maps for frequency hopping implementation in FPGA 揭开稳健安全的面纱：在 FPGA 中实现跳频的混沌图

IF 6 2区工程技术

Ain Shams Engineering Journal Pub Date : 2024-11-01 DOI: 10.1016/j.asej.2024.103016

Harith G.Ayoub , Zaid A.Abdulrazzaq , Ahmed F.Fathil , Shahd A.Hasso , Aamer T.Suhail

{"title":"Unveiling robust security: Chaotic maps for frequency hopping implementation in FPGA","authors":"Harith G.Ayoub , Zaid A.Abdulrazzaq , Ahmed F.Fathil , Shahd A.Hasso , Aamer T.Suhail","doi":"10.1016/j.asej.2024.103016","DOIUrl":"10.1016/j.asej.2024.103016","url":null,"abstract":"<div><div>Frequency hopping is a main technique for wireless communication, avoiding interference and interception. This paper provides novel hardware design for frequency-hopping pseudorandom bit generator (PRBG).PRBG design by chaotic maps on FPGA.Two proposed methods in this work first combine chaotic maps in a cascade manner called fixed point cascade chaotic maps (FPCCM-FHSS), and second, the conjunction of chaotic maps done in an XORed manner called fixed point an XOR chaotic method (FPXORCM-FHSS).The results were the first eight NIST randomness tests.Frequency indicates that all p-values larger than 0.01 are needed to achieve better randomness,Second and third were die-hard tests, many distribution tests with significant p-values (p <0.01) that meet high standards of statistical randomness, making them suitable for channel security.Last were the FPGA results between the proposed methods for speed and hardware resources).The works implemented on XILINX ZC702 achieved 2 Gbps to meet the speed requirements of the change of the carrier frequency.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"15 11","pages":"Article 103016"},"PeriodicalIF":6.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of the dynamical behaviors for the generalized Bogoyavlvensky–Konopelchenko equation and its analytical solutions occurring in mathematical physics 分析数学物理中出现的广义博戈亚弗尔文斯基-科诺佩尔琴科方程的动力学行为及其解析解

IF 6 2区工程技术

Ain Shams Engineering Journal Pub Date : 2024-11-01 DOI: 10.1016/j.asej.2024.103000

Karim K. Ahmed , Hisham H. Hussein , Hamdy M. Ahmed , Wafaa B. Rabie , Wassim Alexan

{"title":"Analysis of the dynamical behaviors for the generalized Bogoyavlvensky–Konopelchenko equation and its analytical solutions occurring in mathematical physics","authors":"Karim K. Ahmed , Hisham H. Hussein , Hamdy M. Ahmed , Wafaa B. Rabie , Wassim Alexan","doi":"10.1016/j.asej.2024.103000","DOIUrl":"10.1016/j.asej.2024.103000","url":null,"abstract":"<div><div>In the domains of fluid mechanics, hydrodynamics, and marine engineering, Bogoyavlensky–Konopelchenko equations are of great interest to mathematicians and physicists as a means of illuminating the diverse dynamics of non-linear wave events. In this study, to pique readers' interest, we investigate the soliton solutions of a dynamical model, which is the mathematical physics equivalent of the (2+1)-dimensional generalized Bogoyavlensky–Konopelchenko equation (GBKE). Utilizing the improved modified extended tanh-function scheme (IMETFS), we generate several innovative solutions. Utilizing the previously described approach, we find new types of solutions that have never been found before to demonstrate their originality for the problem at hand, such as dark, singular soliton, exponential, hyperbolic, singular periodic, Jacobi elliptic function (JEF), and rational solutions. The results show that the computational procedures are clear, informed, and effective. By integrating them with representational calculations, they may be used for more intricate phenomena. The efficacy of our method indicates that it may be utilized to tackle other non-linear challenges in many domains, particularly in soliton theory, since the examined model appears in many applications. Utilizing the computer algebra system, Wolfram Mathematica®, the propagation of the well-furnished results is visualized through contour plots, 2D and 3D visualizations for different values of the required free parameters. All of the research's conclusions are necessary to comprehend the behavior and physical significance of the examined equation, highlighting how crucial it is to examine various non-linear wave phenomena in the field of engineering mathematics and physical sciences.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"15 11","pages":"Article 103000"},"PeriodicalIF":6.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Computational study of coupled Whitham Broer Kaup equations via interpolation technique 通过插值技术对 Whitham Broer Kaup 耦合方程进行计算研究

IF 6 2区工程技术

Ain Shams Engineering Journal Pub Date : 2024-11-01 DOI: 10.1016/j.asej.2024.103007

Tanveer Akbar , Sirajul Haq , Shams Ul Arifeen , Azhar Iqbal , Wei Sin Koh

{"title":"Computational study of coupled Whitham Broer Kaup equations via interpolation technique","authors":"Tanveer Akbar , Sirajul Haq , Shams Ul Arifeen , Azhar Iqbal , Wei Sin Koh","doi":"10.1016/j.asej.2024.103007","DOIUrl":"10.1016/j.asej.2024.103007","url":null,"abstract":"<div><div>The main purpose of this study is to investigate the numerical solution of coupled Whitham Broer Kaup (WBK) equation via Quintic B-Spline interpolation technique. This problem is of significant interest in the study of nonlinear wave phenomena because of its applications in various fields, such as fluid dynamics, plasma physics, and nonlinear optics and climate modeling. For the temporal derivative, the forward difference technique and a quadrature rule are utilized to deal the integer and fractional models, respectively, while spatial operators and the solutions are then obtained using Quintic B-spline. Furthermore, the non-linear terms are linearized using Quasi-linearization technique. Absolute error, <span><math><msub><mrow><mi>L</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span> and <span><math><msub><mrow><mi>L</mi></mrow><mrow><mo>∞</mo></mrow></msub></math></span> error norms are computed to check the accuracy of the proposed method. The computed results are represented graphically and compared with the exact solution. It is found that our method is efficient due to less computational cost and proffer better accuracy. Stability of the proposed method is discussed using Von-Neumann stability which identifies that the scheme is conditionally stable.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"15 11","pages":"Article 103007"},"PeriodicalIF":6.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of dual-stage controllers in renewable energy sources-based interconnected power systems through refinement of the African Vultures Optimization Algorithm 通过改进非洲秃鹫优化算法优化基于可再生能源的互联电力系统中的双级控制器

IF 6 2区工程技术

Ain Shams Engineering Journal Pub Date : 2024-11-01 DOI: 10.1016/j.asej.2024.103039

Arindita Saha , Mahajan Sagar Bhaskar , Dhafer Almakhles , Mahmoud F. Elmorshedy

{"title":"Optimization of dual-stage controllers in renewable energy sources-based interconnected power systems through refinement of the African Vultures Optimization Algorithm","authors":"Arindita Saha , Mahajan Sagar Bhaskar , Dhafer Almakhles , Mahmoud F. Elmorshedy","doi":"10.1016/j.asej.2024.103039","DOIUrl":"10.1016/j.asej.2024.103039","url":null,"abstract":"<div><div>With an emphasis on a three-region system, this paper explores automaticgeneration control within a conventional framework. Area 2 uses thermal-thermal sources, Area 3 uses gas-thermal sources, and Area 1 uses thermal-biodiesel sources. IPD(1 + I) is a unique cascade controller that combines integral-proportional-derivative (IPD) components with one-plus-integral (1 + I) components. To find the best gains and settings for the IPD(1 + I) controller, a <em>meta</em>-heuristic method called the African Vulture Optimization Algorithm (AVOA) is applied. Reducing the integral squared error (ISE), as determined by the performance index (Pi), is the main goal. The performance of the IPD(1 + I) controller is evaluated by contrasting it with a range of secondary controllers. Hybrid Peak Area-ISE (hPA-ISE), a novel performance metric, is also assessed in addition to the conventional ISE. The incorporation of renewable energy sources, such solar thermal energy and solid oxide fuel cells, significantly improves the system’s performance. Interestingly, under normal conditions, the IPD(1 + I) controller’s parameter settings continue to work for both sinusoidal and random load situations, obviating the need for additional tuning.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"15 11","pages":"Article 103039"},"PeriodicalIF":6.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Improved digital multi-resonant controller for 3 ϕ grid-tied and standalone PV system under balanced and unbalanced conditions 平衡和不平衡条件下 3 [省略公式] 并网和独立光伏系统的改进型数字多谐振控制器

IF 6 2区工程技术

Ain Shams Engineering Journal Pub Date : 2024-11-01 DOI: 10.1016/j.asej.2024.103036

Kamran Zeb , T.D.C. Busarello , Waqar Uddin , Muhammad Khalid

{"title":"An Improved digital multi-resonant controller for 3 ϕ grid-tied and standalone PV system under balanced and unbalanced conditions","authors":"Kamran Zeb , T.D.C. Busarello , Waqar Uddin , Muhammad Khalid","doi":"10.1016/j.asej.2024.103036","DOIUrl":"10.1016/j.asej.2024.103036","url":null,"abstract":"<div><div>With the exponential penetration of Photovoltaic (PV) plants into the power grid, advanced current controllers should be employed in grid-tied power converters in order to efficiently inject high quality current synchronized with the grid voltage. This research presents the modeling and design of a digital multi-resonant controller to feed-in high quality current. The novelty lies in designing the control in a superior manner to conventional techniques. As an outcome, practical engineers discover an easy, fast, robust, and accurate control method. The proposed 5-kVA PV system can inject active and reactive power effectively while staying resilient to imbalance scenarios. Synchronization is accomplished via a synchronous reference frame (SRF) based phase locked loop (PLL) that performs effectively even with distorted and nonideal grids. The practicality and efficacy of the developed controller is verified both in simulation (PSIM and code composer studio) and Hardware in Loop (HIL) via Typhoon 402 and TMS32F28335 experiments. The devised controller is evaluated in both grid-connected and standalone modes under a wide range of disturbances, distortions, and non-ideal conditions. The simulation and HIL results validate the robustness, fastness, resilience, and effectiveness of the proposed controller compared with a well-tuned conventional proportional resonant (PR) controller.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"15 11","pages":"Article 103036"},"PeriodicalIF":6.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142209453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analyzing the dependency of earthquake insurance premium on the intensity measure used in probabilistic seismic hazard analysis and fragility curves 分析地震保险费与地震灾害概率分析和脆性曲线所用烈度指标的关系

IF 6 2区工程技术

Ain Shams Engineering Journal Pub Date : 2024-11-01 DOI: 10.1016/j.asej.2024.102989

Shahrokh Tafi , Pooria Rashvand , Mehdi Mahdavi Adeli , Seyed Amir Hossein Hashemi

{"title":"Analyzing the dependency of earthquake insurance premium on the intensity measure used in probabilistic seismic hazard analysis and fragility curves","authors":"Shahrokh Tafi , Pooria Rashvand , Mehdi Mahdavi Adeli , Seyed Amir Hossein Hashemi","doi":"10.1016/j.asej.2024.102989","DOIUrl":"10.1016/j.asej.2024.102989","url":null,"abstract":"<div><div>Considering the uncertainties associated with earthquake, seismic response of structures, damage caused by the response and the repair costs, determining Earthquake Insurance Premium (EIP) is a challenging task that requires a framework for modeling all inherent risks. Most of the models proposed for EIP determination have two basic components. The first component indicates the probability of seismic hazard (generally obtained from the probabilistic seismic hazard analysis), and the second component indicates the probability of occurrence of a given damage to the structure with respect to different seismic hazard levels (generally obtained from the fragility curves). These two components are interconnected through an intermediate parameter, known as the Intensity Measure (IM), which is of great importance in calculations and has hardly been considered so far. In this study, the dependency of EIP on the IM used in the probabilistic seismic hazard analysis and the fragility curves is analyzed. To this end, the EIP was determined for five types of buildings at low, medium and high seismic hazard levels using two IMs (peak ground acceleration and first mode spectral acceleration). The results of this study warn that the EIP can be highly dependent on the IM, so that for all studied structures, the EIP determined based on peak ground acceleration at a high seismic hazard level is nearly three times as many as the one determined by the first mode spectral acceleration. A significant finding is that when the first mode spectral acceleration is used as the IM, the ratio of EIP at different seismic hazard levels closely matches the ratio of IM at the same levels. This result can be valuable in developing insurance codes and regulations. However, this is not the case for the currently used IM, i.e., peak ground acceleration.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"15 11","pages":"Article 102989"},"PeriodicalIF":6.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Novel sustainable techniques for enhancing shear strength of RC beams mitigating construction failure risk 提高钢筋混凝土梁抗剪强度、降低施工失败风险的新型可持续技术

IF 6 2区工程技术

Ain Shams Engineering Journal Pub Date : 2024-11-01 DOI: 10.1016/j.asej.2024.103017

Mohamed Ghalla , Alireza Bahrami , Moataz Badawi , Ehab A. Mlybari

{"title":"Novel sustainable techniques for enhancing shear strength of RC beams mitigating construction failure risk","authors":"Mohamed Ghalla , Alireza Bahrami , Moataz Badawi , Ehab A. Mlybari","doi":"10.1016/j.asej.2024.103017","DOIUrl":"10.1016/j.asej.2024.103017","url":null,"abstract":"<div><div>The aim of this study is to evaluate the effectiveness of various innovative and sustainable methods for improving the shear performance of reinforced concrete (RC) beams. The potential risk of failure for such elements is considered a potential threat, therefore, this study addresses it through experimental tests and numerical analyses to be mitigated carefully in order to enhance the safety and sustainability of buildings. A total of eleven specimens, comprising two control specimens and nine strengthened specimens, underwent three-point testing. Several proposed strengthening techniques, each involving multiple parameters, were examined. In the initial approach, glass fiber-reinforced polymer (GFRP) textile embedded in an external fiber-reinforced cementitious mortar (FRCM) jacket was utilized, with an evaluation of the number of the GFRP textile layers (1, 2, and 3 layers). The second technique incorporated near surface mounted (NSM) GFRP bars along with the FRCM jacketing, where the diameter of the GFRP bars (10, 12, and 16 mm) served as the primary parameter. In the final technique, externally bonded stainless-steel strips (SSSs) of varying thicknesses (1, 1.25, 1.50 mm) were affixed to the beams’ surface. The obtained results revealed that the application of the FRCM jacketing method yielded positive results, showing a significant 30.7 % average increase in the crack initiation load and a 17.1 % improvement in the failure load compared to the defected beam. However, issues of debonding beneath the loading point were observed in the FRCM jacket, particularly with three layers of the GFRP textile, leading to the separation of the concrete cover. Moreover, combining the NSM GFRP bars with an FRCM jacket addressed the absence of shear stirrups. The most remarkable improvement was noted utilizing the NSM GFRP bars and an FRCM jacket, followed by employing SSSs with an FRCM jacket.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"15 11","pages":"Article 103017"},"PeriodicalIF":6.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The analysis of traveling wave solutions and dynamical behavior for the stochastic coupled Maccari's system via Brownian motion 通过布朗运动分析随机耦合马卡里系统的行波解和动力学行为

IF 6 2区工程技术

Ain Shams Engineering Journal Pub Date : 2024-11-01 DOI: 10.1016/j.asej.2024.103037

Shan Zhao , Zhao Li

引用次数: 0

Optimizing the loss function for bounding box regression through scale smoothing 通过尺度平滑优化边界框回归的损失函数

IF 6 2区工程技术

Ain Shams Engineering Journal Pub Date : 2024-11-01 DOI: 10.1016/j.asej.2024.103046

Ying-Jun Lei , Bo-Yu Wang , Yu-Tong Yang

{"title":"Optimizing the loss function for bounding box regression through scale smoothing","authors":"Ying-Jun Lei , Bo-Yu Wang , Yu-Tong Yang","doi":"10.1016/j.asej.2024.103046","DOIUrl":"10.1016/j.asej.2024.103046","url":null,"abstract":"<div><div>Deep learning technology is widely used in target detection in machine vision. However, existing regression loss functions used for training networks suffer from slow convergence and imprecise localization, hindering the realization of fast and accurate visual detection. To address this, the study proposes the smoothing adaptive intersection over union loss (SAIoU Loss), which adapts bounding box regression through scale smoothing. By analyzing the bounding box regression process, SAIoU Loss incorporates a center-of-mass distance penalty term to enhance prediction speed during box distance regression in the pre-training phase. Additionally, it integrates a corner point distance penalty term with adaptive weights to refine the similarity of predicted box shapes throughout regression. The experimental results demonstrate that SAIoU Loss achieves a 39.6 mAP in target detection model training on PASCAL VOC, marking a 3.39% improvement. It also records the highest result of 26.7% in medium-sized target detection, which represents a 9.43% improvement over IoU. In the VisDrone 2019 dataset, SAIoU Loss reaches a detection accuracy of 14.8 mAP, improving by 1.3 mAP compared to the Baseline. The SAIoU loss proposed in this study realizes efficient and highly accurate target detection.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"15 11","pages":"Article 103046"},"PeriodicalIF":6.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of inflation on the construction sector and economic growth in selected countries: A continental comparison 通货膨胀对部分国家建筑业和经济增长的影响：非洲大陆比较

IF 6 2区工程技术

Ain Shams Engineering Journal Pub Date : 2024-11-01 DOI: 10.1016/j.asej.2024.103013

Mohammad Qabaja , Goktug Tenekeci

{"title":"Influence of inflation on the construction sector and economic growth in selected countries: A continental comparison","authors":"Mohammad Qabaja , Goktug Tenekeci","doi":"10.1016/j.asej.2024.103013","DOIUrl":"10.1016/j.asej.2024.103013","url":null,"abstract":"<div><div>Whether in developed or developing countries, the construction industry had a vital part to play concerning the GDP throughout the ages. The increasing inflation since the pandemic affected numerous main sectors, no doubt construction industry is not different and has not been immune to. The presence of inflation and resultant interest rate influence the growth of the economic sector. There have been no reported studies to evaluate the impact on construction industry, nor a comparative analysis at continental level for selective countries. The study designed to explore the long-run (LR) and causality (CA) of the inflation and interest rate on the GDP and the construction sector depending on the four selected variables and models from 1991 to 2022 on nine selected countries from Americas, Asia and Europe that are facing ever-rising inflation in most recent years. Data of the study have been collated from official databases, where the sources are introduced. The research concluded that the interest rate and inflation have positive bidirectional long run estimates in seven countries which that impact negatively on the economic growth. However, it is also found that the impact of inflation and interest rate on the GDP and the construction sector differs from country to country. It is shown that the high inflation and interest rate issue can also pushes GDP upwards, not necessarily on real value.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"15 11","pages":"Article 103013"},"PeriodicalIF":6.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0