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An Optimization Approach of IoD Deployment for Optimal Coverage Based on Radio Frequency Model

Computer Modeling in Engineering & Sciences 2024年第6期139卷 2627-2647页

作者： Tarek Sheltami Gamil Ahmed Ansar Yasar Computer Engineering Department Interdisciplinary Research Center of Smart Mobility and LogisticsKing Fahd University of Petroleum and MineralsDhahran31261Saudi Arabia Transportation Research Institute(imob) Hasselt UniversityHasselt3500Belgium

Recently,Internet of Drones(IoD)has garnered significant attention due to its widespread ***,deploying IoD for area coverage poses numerous limitations and *** include interference between neighboring drones,the need for directional antennas,and altitude restrictions for *** challenges necessitate the development of efficient *** research paper presents a cooperative decision-making approach for an efficient IoDdeployment to address these challenges *** primary objective of this study is to achieve an efficient IoDdeployment strategy thatmaximizes the coverage regionwhile minimizing interference between neighboring *** deployment problem,the interference increases as the number of deployed drones increases,resulting in bad quality of *** the other hand,deploying a few drones cannot satisfy the coverage *** accomplish this,an enhanced version of a concise population-based meta-heuristic algorithm,namely Improved Particle SwarmOptimization(IPSO),is *** objective function of IPSO is defined based on the coverage probability,which is primarily influenced by the characteristics of the antennas and drone altitude.A radio frequency(RF)model is derived to evaluate the coverage quality,considering both Line of Sight(LOS)and Non-Line of Sight(NLOS)down-link coverage probabilities for ground *** is assumed that each drone is equipped with a directional antenna to optimize coverage in a given *** simulations are conducted to assess the effectiveness of the proposed *** demonstrate that the proposed method achieves maximum coverage with minimum transmission ***,a comparison is made against Collaborative Visual Area Coverage Approach(CVACA),and a game-based approach in terms of coverage quality and convergence *** simulation results reveal that our approach outperforms both CVACA and the gamebased schemes in terms of coverage an

关键词： IoD line of sight optimal deployment IPSO RF model

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Detecting Man-in-the-Middle Attack in Fog Computing for Social Media

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Computers, Materials & Continua 2021年第10期69卷 1159-1181页

作者： Farouq Aliyu Tarek Sheltami Ashraf Mahmoud Louai Al-Awami Ansar Yasar King Fahd University of Petroleum and Minerals Dhahran31261Saudi Arabia Transportation Research Institute(imob) Hasselt UniversityHasselt3500Belgium

Fog computing(FC)is a networking paradigm where wireless devices known as fog nodes are placed at the edge of the network(close to the Internet of Things(IoT)devices).Fog nodes provide services in lieu of the ***,improving the performance of the network and making it attractive to social media-based *** issues are one of the most challenges encountered in *** this paper,we propose an anomalybased Intrusion Detection and Prevention System(IDPS)against Man-in-theMiddle(MITM)attack in the fog *** system uses special nodes known as Intrusion Detection System(IDS)nodes to detect intrusion in the *** periodically monitor the behavior of the fog nodes in the *** deviation from normal network activity is categorized as malicious,and the suspected node is *** Moving Average(EWMA)is added to the system to smooth out the noise that is typically found in social media *** results(with 95%confidence)show that the accuracy of the proposed system increases from 80%to 95%after EWMA is ***,with EWMA,the proposed system can detect the intrusion from 0.25–0.5 s seconds faster than that without ***,it affects the latency of services provided by the fog nodes by at least 0.75–1.3 ***,EWMA has not increased the energy overhead of the system,due to its lightweight.

关键词： Fog computing man-in-the-middle attack intrusion detection system and prevention system network security social media

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Energy-Efficient UAVs Coverage Path Planning Approach

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Computer Modeling in Engineering & Sciences 2023年第9期136卷 3239-3263页

作者： Gamil Ahmed Tarek Sheltami Ashraf Mahmoud Ansar Yasar Computer Engineering Department Interdisciplinary Research Center of Smart Mobility and LogisticsKing Fahd University of Petroleum and MineralsDhahran31261Saudi Arabia Transportation Research Institute(imob) Hasselt UniversityHasselt3500Belgium

Unmanned aerial vehicles(UAVs),commonly known as drones,have drawn significant consideration thanks to their agility,mobility,and flexibility *** play a crucial role in modern reconnaissance,inspection,intelligence,and surveillance *** path planning(CPP)which is one of the crucial aspects that determines an intelligent system’s quality seeks an optimal trajectory to fully cover the region of interest(ROI).However,the flight time of the UAV is limited due to a battery limitation and may not cover the whole region,especially in large ***,energy consumption is one of the most challenging issues that need to be *** this paper,we propose an energy-efficient coverage path planning algorithm to solve the CPP *** objective is to generate a collision-free coverage path that minimizes the overall energy consumption and guarantees covering the whole *** do so,the flight path is optimized and the number of turns is reduced to minimize the energy *** proposed approach first decomposes the ROI into a set of cells depending on a UAV camera ***,the coverage path planning problem is formulated,where the exact solution is determined using the CPLEX *** small-scale problems,the CPLEX shows a better solution in a reasonable ***,the CPLEX solver fails to generate the solution within a reasonable time for large-scale ***,to solve the model for large-scale problems,simulated annealing forCPP is *** results show that heuristic approaches yield a better solution for large-scale problems within amuch shorter execution time than the CPLEX ***,we compare the simulated annealing against the greedy *** results show that simulated annealing outperforms the greedy algorithm in generating better solution quality.

关键词： Coverage path planning MILP CPLEX solver energy model optimization region of interest area of interest

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结合功能测试与模拟驾驶的老年人驾驶适性评估

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东南大学学报（自然科学版） 2021年第1期51卷 171-177页

作者：沈永俊谭旭 Tom Brijs 东南大学交通学院南京211189 Transportation Research Institute(imob) Hasselt UniversityHasselt 3500Belgium

为应对老年驾驶人驾驶能力下降带来的交通安全问题并降低与其相关的事故风险,建立了可有效替代道路驾驶测试的老年人驾驶适性评估方法.对92名老年驾驶人进行了功能测试、模拟驾驶测试与道路驾驶测试,通过独立样本T检验与分层逐步Logisti... 详细信息

为应对老年驾驶人驾驶能力下降带来的交通安全问题并降低与其相关的事故风险,建立了可有效替代道路驾驶测试的老年人驾驶适性评估方法.对92名老年驾驶人进行了功能测试、模拟驾驶测试与道路驾驶测试,通过独立样本T检验与分层逐步Logistic回归确定评价指标体系,分别建立并比选了决策树、随机森林和支持向量机3种评估模型.结果表明,以对比敏感度、功能性伸展、交通标志理解以及合流变道距离等作为评价指标的支持向量机模型对驾驶适性的评估效果最好,准确率高达84.6%.该方法可以有效替代道路测试评估老年人的驾驶适性,能为其停止驾驶、调整驾驶行为、训练提升驾驶能力、使用辅助驾驶技术等提供参考.

关键词：交通安全老年驾驶人驾驶适性功能测试模拟驾驶

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A Proposed Methodological Approach for Considering Community Resilience in Technology Development and Disaster Management Pilot Testing

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International Journal of Disaster Risk Science 2022年第3期13卷 342-357页

作者： Ioannis Benekos Evangelos Bekiaris Katarzyna Wodniak Waleed Serhan Łukasz Sułkowski Hana Gharrad Ansar Yasar Centre for Research&Technology Hellas(CERTH) Hellenic Institute of Transport(HIT)15125MarousiGreece Department of Management University of Social SciencesWarsaw00-842WarsawPoland Transportation Research Institute(imob) Hasselt University3590DiepenbeekBelgium

Nowadays,resilience has become an indispensable term in several aspects and areas of research and *** consensus on what actually constitutes"resilience,""community,"and"community resilience"is still a task that guarantees a vivid exchange of opinions,sometimes escalating into debates,both in the scientific community and among *** out how to practically apply resilience principles goes even a step *** study attempts to circumvent the need for a universal agreement on the definition of"community resilience,"which may still be immature,if not impossible,at this *** accomplish this by proposing a practical methodological approach with concrete methods on how to agree and implement commonly accepted community resilience principles in the context of technology development and pilot testing for disaster *** proposed approach was developed,tested,and validated in the context of the Horizon 2020 EU-funded project Search and *** aspects of the approach,along with considerations for further improvement and adaptation in different contexts,are addressed in the article.

关键词： Community resilience Crisis management Disaster preparedness and response Disaster risk management Search and rescue

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Impact of Transport Network Changes on Tourism in Protected Areas: A Case Study of Ayubia National Park, Pakistan

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Journal of Transportation Technologies 2020年第4期10卷 325-350页

作者： Muhammad Shaker Muhammad Adnan Elke Hermans Ansar Yasar Geert Wets UHasselt - Universiteit Hasselt Transportation Research Institute (IMOB) Diepenbeek Belgium

The inflow caused by tourists in peak seasons exerts an uncontrollable pressure on the existing infrastructure. The Ayubia National Park in Pakistan faces traffic delays and capacity restraints on the connecting roads in peak season. The study focuses on the formulation of critical strategies by deploying amendments in the transport network. The methodology contains three parts: 1) a questionnaire was designed to inquire about several variables from the visitors;2) the second part was traffic count data collection and analysis. Based on the response collected, the impact of multiple strategies on the network was analyzed using TransCad;3) in the third part, the results obtained were shared with experts to gain their valuable opinions. It was observed that the time of the day based access restriction to heavy vehicles could lead to dropping the Volume to capacity ratio from 1.7 to 1.2. However, the experts were also of the view that network changes can enhance and improve the visitors’ experience.

关键词： Transport Management National Park Tourism Strategies Visitors

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A tripartite evolutionary game analysis of providing subsidies for pick-up/drop-off strategy in carpooling problem

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Autonomous Intelligent Systems 2023年第1期3卷 50-65页

作者： Zeyuan Yan Li Li Hui Zhao Yazan Mualla Ansar Yasar College of Electronics and Information Engineering Tongji UniversityShanghai201804China. Shanghai Research Institute for Intelligent Autonomous Systems Shanghai201203China. Shanghai Institute of Intelligent Science and Technology Tongji UniversityShanghai201804China. UTBM CIAD UMR 7533F-90010 Belfort cedexFrance. imob Hasselt UniversityMaartelarenlaan 423500 HasseltBelgium.

Although the pick-up/drop-off(PUDO)strategy in carpooling offers the convenience of short-distance walking for passengers during boarding and disembarking,there is a noticeable hesitancy among commuters to adopt this travel method,despite its numerous ***,this paper establishes a tripartite evolutionary game theory(EGT)model to verify the evolutionary stability of choosing the PUDO strategy of drivers and passengers and offering subsidies strategy of carpooling platforms in carpooling *** model presented in this paper serves as a valuable tool for assessing the dissemination and implementation of PUDO strategy and offering subsidies strategy in carpooling ***,an empirical analysis is conducted to examine and compare the sensitivity of the parameters across various *** findings suggest that:firstly,providing subsidies to passengers and drivers,along with deductions for drivers through carpooling platforms,is an effective way to promote wider adoption of the PUDO ***,the decision-making process is divided into three stages:initial stage,middle stage,and mature *** strategy progresses from initial rejection to widespread acceptance among drivers in the middle stage and,in the mature stage,both passengers and drivers tend to adopt it under carpooling platform subsidies;the factors influencing the costs of waiting and walking times,as well as the subsidies granted to passengers,are essential determinants that require careful consideration by passengers,drivers,and carpooling platforms when choosing the PUDO *** work provides valuable insight into the PUDO strategy’s applicability and the declared results provide implications for traffic managers and carpooling platforms to offer a suitable incentive.

关键词： Carpooling problem Pick-up/drop-off strategy Offering subsidies strategy Tripartite evolutionary game theory Evolutionarily stable strategy

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Correction to:A Proposed Methodological Approach for Considering Community Resilience in Technology Development and Disaster Management Pilot Testing

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International Journal of Disaster Risk Science 2022年第3期13卷 358-358页

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License,which permits use,sharing,adaptation,distribution and reproduction in any medium or format,as long as you give appropriate credit to the original author(s)and the source,provide a link to the Creative Commons licence,and indicate if changes were *** images or other third party material in this article are included in the article's Creative Commons licence,unless indicated otherwise in a credit line to the *** material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use,you will need to obtain permission directly from the copyright holder.

关键词： Creative app Open

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Smart Dynamic Trafc Monitoring and Enforcement Syste

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Computers, Materials & Continua 2021年第6期 2797-2806页

作者： Youssef El-Hansali Fatma Outay Ansar Yasar Siham Farrag Muhammad Shoaib Muhammad Imran Hammad Hussain Awan Transportation Research Institute(imob) Universiteit HasseltHasselt3590Belgium College of Technological Innovation Zayed UniversityDubai19282UAE Department of Civil Engineering Middle East College(MEC)Muscat124Oman College of Computer and Information Sciences King Saud UniversityRiyadh12372Saudi Arabia The University of Lahore(Islamabad Campus) Islamabad44000Pakistan

Enforcement of trafc rules and regulations involves a wide range of complex tasks,many of which demand the use of modern *** speed limits(VSL)control is to change the current speed limit according to the current trafc situation based on the observed trafc *** aim of this study is to provide a simulation-based methodological framework to evaluate(VSL)as an effective Intelligent Transportation System(ITS)enforcement *** focus of the study is on measuring the effectiveness of the dynamic trafc control strategy on trafc performance and safety considering various performance indicators such as total travel time,average delay,and average number of *** Arab Emirates(UAE)was selected as a case study to evaluate the effectiveness of this strategy.A micro simulation software package VISSIM with add-on module VisVAP is used to evaluate the impacts of *** has been observed that VSL control strategy reduced the average delay time per vehicle to around 7%,travel time by 3.2%,and number of stops by 48.5%.Dynamic trafc control strategies also alleviated congestion by increasing the capacity of the bottleneck section and improving *** of this study would act as a guidance for engineers and decision makers to new trafc control system implementation.

关键词： ITS safety variable speed limits ITS VISSIM

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