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17th International Convention on Rehabilitation Engineering and Assistive technology, i-CREATe 2024

作者： Sansrimahachai, Watsawee Toachoodee, Manachai Khemapech, Ittipong School of Science and Technology University of the Thai Chamber of Commerce System and Networking Group Computer Science Department Bangkok Thailand University of the Thai Chamber of Commerce System and Networking Group School of Science and Technology Bangkok Thailand

ISBN: (纸本)9798350355154

Over the past decade, almost all countries in the world have experiencing growth in both the size and the proportion of elderly people in the population. The number of world's aging population is expected to reach about 2.1 billion by 2050, which is more than double figure from 1 billion in 2020. This statistic indicates the fact that we are entering the era of 'super-aged society'. One of the major problems in the elderly comes in the form of a decline in health and physical function, generally called Frailty. The elderly with frailty typically suffer several health issues including loss of muscle mass, poor gait and balance and cognitive impairment. They are higher risk of falls and quick progression to dependency. Early identification of frailty is required to effectively reduce and prevent frailty outcomes. To address the problem, we propose a frailty detection system that can remotely analyze gait characteristics and detect frailty among elderly individuals in real-time. Our system utilizes an Ultra-wideband tag attached to the body of the elderly as a data collection device. It applies data stream mining techniques that perform machine learning-based gait analysis and detect frailty based on the patterns of acceleration data. The experimental result indicates that our proposed frailty detection system is practical to be used in real-world settings with relatively high accuracy rate, about 81.8% for overall accuracy. © 2024 IEEE.

关键词： Frailty Detection Gait Analysis Stream Mining

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Joint alignment and steering to manage interference

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Digital Communications and Networks 2024年第2期10卷 429-438页

作者： Zhao Li Xiujuan Liang Yinghou Liu Jia Liu Zheng Yan School of Cyber Engineering Xidian UniversityXi'an710126China Technol.on Commun.Net.Lab. The 54th Research Inst.of China Elec.Technol.Group Corp.Shijiazhuang050081China School of Computer Science and Technology Xidian UniversityXi'an710126China The Department of Communications and Networking(Comnet) Aalto University02150EspooFinland

In wireless communication networks,mobile users in overlapping areas may experience severe interference,therefore,designing effective Interference Management(IM)methods is crucial to improving network ***,when managing multiple disturbances from the same source,it may not be feasible to use existing IM methods such as Interference Alignment(IA)and Interference Steering(IS)*** is because with IA,the aligned interference becomes indistinguishable at its desired Receiver(Rx)under the cost constraint of Degrees-of-Freedom(DoF),while with IS,more transmit power will be consumed in the direct and repeated application of IS to each *** remedy these deficiencies,Interference Alignment Steering(IAS)is proposed by incorporating IA and IS and exploiting their advantages in *** IAS,the interfering Transmitter(Tx)first aligns one interference incurred by the transmission of one data stream to a one-dimensional subspace orthogonal to the desired transmission at the interfered Rx,and then the remaining interferences are treated as a whole and steered to the same subspace as the aligned ***,two improved versions of IAS,i.e.,IAS with Full Adjustment at the Interfering Tx(IAS-FAIT)and Interference Steering and Alignment(ISA),are *** former considers the influence of IA on the interfering user-pair's *** orthogonality between the desired signals at the interfered Rx can be maintained by adjusting the spatial characteristics of all interferences and the aligned interference components,thus ensuring the Spectral Efficiency(SE)of the interfering communication *** ISA,the power cost for IS at the interfered Tx is minimized,hence improving SE performance of the interfered *** the proposed methods are realized at the interfering and interfered Txs cooperatively,the expenses of IM are shared by both *** in-depth simulation results show that joint use of IA and

关键词： Interference Interference management Interference alignment Interference steering Spectral efficiency

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The ACK Policy Optimization Algorithm for QUIC

The ACK Policy Optimization Algorithm for QUIC

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Conference on Local computer Networks (LCN)

作者： Ekaterina Volodina Erwin P. Rathgeb Computer Networking Technology Group University of Duisburg-Essen Essen Germany

In order to achieve new performance gains, network protocols are constantly being improved. One of the important novel developments is the new generation transport protocol QUIC. Although QUIC includes many advanced options, it suffers from performance degradation compared to TCP. One of the reasons is the larger number of acknowledgments (ACK). In practice ACK thinning by middleboxes is widespread for TCP. However, this is not possible for QUIC due to encrypted header and payload. The previous works aimed at solving this issue propose static and dynamic solutions. However, they cannot completely solve this problem, since the static approach cannot fit all network configurations and our previous solution requires a modification of the short QUIC packet header. In this work we propose an ACK optimisation mechanism for QUIC which is able to find the optimum value for delaying acknowledgements, can readapt it to the changing network environments and does not require any modification of the QUIC packet header.

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Zero-Knowledge and Identity-Based Authentication, Authorization, Access Control, and Key Exchange for Publish/Subscribe in Internet of Things

Zero-Knowledge and Identity-Based Authentication, Authorizat...

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Cloudification of the Internet of Things (CIoT)

作者： Irfan Simsek Computer Networking Technology Group University of Duisburg-Essen Essen Germany

Clients and brokers have to communicate via secure channels in the broker-based publish/subscribe model which can be regarded as one of the communication models usually used in the Internet of Things (IoT). A secure channel setup needs an authentic key exchange which in turn requires an authentication process. Moreover, it is required to verify that clients publish or subscribe only to authorized topics managed by authorized brokers. Additionally, IoT includes its own security requirements. This paper introduces a novel handshake protocol providing authentication, authorization, and access control with key exchange for the broker-based publish/subscribe model in IoT. In contrast to related work, realizations of these security goals are not disjunct processes and are integrated with each other in our approach combining zero-knowledge and identitybased schemes while meeting the IoT security requirements. Thus, it supports autonomy in IoT and does not require any public data pre-distribution or secret pre-sharing between communicating entities. Moreover, no third party has to hold any entity-specific authentication and authorization data. While being independent of publish/subscribe protocols without requiring additional components and procedures, our handshake protocol is resistant to active man in the middle attacks and does not include costly cryptographic operations. This paper also evaluates the performance of our approach with regard to multiple affecting factors.

关键词： Authorization Resistance Cloud computing Protocols Authentication Internet of Things Cryptography

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A Real-Time Acceleration-Based Frailty Detection System for Elderly Care

A Real-Time Acceleration-Based Frailty Detection System for ...

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Rehabilitation Engineering and Assistive technology (i-CREATe), International Convention on

作者： Watsawee Sansrimahachai Manachai Toachoodee Ittipong Khemapech Computer Science Department System and Networking Group School of Science and Technology University of the Thai Chamber of Commerce Bangkok Thailand System and Networking Group School of Science and Technology University of the Thai Chamber of Commerce Bangkok Thailand

ISBN: (数字)9798350355154

ISBN: (纸本)9798350355161

Over the past decade, almost all countries in the world have experiencing growth in both the size and the proportion of elderly people in the population. The number of world's aging population is expected to reach about 2.1 billion by 2050, which is more than double figure from 1 billion in 2020. This statistic indicates the fact that we are entering the era of “super-aged society”. One of the major problems in the elderly comes in the form of a decline in health and physical function, generally called Frailty. The elderly with frailty typically suffer several health issues including loss of muscle mass, poor gait and balance and cognitive impairment. They are higher risk of falls and quick progression to dependency. Early identification of frailty is required to effectively reduce and prevent frailty outcomes. To address the problem, we propose a frailty detection system that can remotely analyze gait characteristics and detect frailty among elderly individuals in real-time. Our system utilizes an Ultra-wideband tag attached to the body of the elderly as a data collection device. It applies data stream mining techniques that perform machine learning-based gait analysis and detect frailty based on the patterns of acceleration data. The experimental result indicates that our proposed frailty detection system is practical to be used in real-world settings with relatively high accuracy rate, about 81.8% for overall accuracy.

关键词： Performance evaluation Accuracy Prototypes Data collection Feature extraction Real-time systems Data mining Older adults Monitoring Ultra wideband technology

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Smart Contract Vulnerabilities and Detection Methods: A Survey

Smart Contract Vulnerabilities and Detection Methods: A Surv...

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International Conference on Computing and networking technology (ICCNT)

作者： Ayush Gurjar B. R. Chandavarkar Department of Computer Science and Engineering Wireless Information Networking Group (WiNG) National Institute of Technology Karnataka Surathkal Mangalore India

ISBN: (数字)9798350370249

ISBN: (纸本)9798350370270

Smart contracts are fundamental to blockchain technology, enabling automated contract execution without intermediaries. Their widespread adoption, particularly on platforms like Ethereum, has led to significant digital asset holdings. However, the immutability of blockchain magnifies the impact of even minor errors during smart contract development, potentially resulting in substantial financial losses. Given the frequency of vulnerabilities in existing contracts, secure smart contract development is essential. This paper conducts a comprehensive review of known vulnerabilities and detection methods to guide a more secure approach to smart contract development and promote safer blockchain ecosystems.

关键词： Surveys Reviews Smart contracts Ecosystems

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Joint Deployment and Resource Allocation for Multi-AeBS Networks: A Two-Timescale Optimization Framework Using MADRL

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IEEE Transactions on Communications 2024年第6期73卷 4272-4289页

作者： Zhao, Yikun Zhou, Fanqin Feng, Lei Sun, Yao Li, Wenjing Lim, Wei Yang Bryan Xiong, Zehui Mao, Shiwen Han, Zhu State Key Laboratory of Networking and Switching Technology Beijing100876 China University of Glasgow James Watt School of Engineering GlasgowG12 8QQ United Kingdom Nanyang Technological University Alibaba Group and Alibaba-NTU Joint Research Institute Singapore Singapore University of Technology and Design Information Systems Technology and Design Pillar Singapore487372 Singapore Auburn University Department of Electrical and Computer Engineering AuburnAL36849 United States University of Houston Department of Electrical and Computer Engineering HoustonTX77004 United States Kyung Hee University Department of Computer Science and Engineering Seoul446-701 Korea Republic of

As an important component of the space-air-ground integrated network, aerial base station (AeBS) systems have gained significant attention for their flexibility in mobility and cost-effective construction. Nevertheless, the scarce spectrum resources and difficulty in accessing global information bring necessity and challenges to the deployment and resource allocation of AeBSs. In this paper, we propose a practical two-timescale framework to solve the resource allocation and deployment optimization problem in multi-AeBS networks. Specifically, the subcarrier allocation problem is first transformed into a many-to-one matching game coupled with power allocation and solved in a small timescale. Then, in a large timescale, the AeBS deployment subproblem is transformed into a distributed partially observable Markov decision process (Dec-POMDP), and then a novel multi-agent hypergraph convolutional deep reinforcement learning (MAHGCDRL) is proposed to solve this problem. The proposed MAHGCDRL extracts features of neighboring AeBSs through hypergraph convolutional networks, enabling AeBS agents to achieve better coordination in a distributed manner. Simulation results show that our proposed approach can attain a higher sum rate, and the proposed MAHGCDRL algorithm achieves better learning performance compared to the existing benchmarks in the literature. © 1972-2012 IEEE.

关键词： Deep reinforcement learning

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Dynamic Content Security Policy Generation at Client-Side to Mitigate XSS Attacks

Dynamic Content Security Policy Generation at Client-Side to...

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International Conference on Computing and networking technology (ICCNT)

作者： Raghvendra Pratap Singh B. R. Chandavarkar Department of Computer Science and Engineering Wireless Information Networking Group (WiNG) National Institute of Technology Karnataka Surathkal Mangalore India

ISBN: (数字)9798350370249

ISBN: (纸本)9798350370270

Cross-site scripting (XSS) attacks are a major threat to web applications and have consistently ranked among the OWASP Top 10 vulnerabilities. Attackers can inject malicious scripts that execute within a user’s browser. Server-side Content Security Policies (CSPs) offer some protection, but their static nature makes them ineffective when dealing with dynamic content and a very small percentage of web application use. This paper explores dynamically generated CSPs on the client side. This approach overcomes the limitations of traditional CSPs and provides a more robust defense against XSS attacks.

关键词： Cross-site scripting Browsers Security Protection

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Reliable Communication Protocols for Underwater Wireless Sensor Networks: A Survey

Reliable Communication Protocols for Underwater Wireless Sen...

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International Conference on Computing and networking technology (ICCNT)

作者： Prajwal Manohar Bhopale B. R. Chandavarkar Department of Computer Science and Engineering Wireless Information Networking Group (WiNG) National Institute of Technology Karnataka Surathkal Mangalore India

ISBN: (数字)9798350370249

ISBN: (纸本)9798350370270

Underwater Wireless Sensor Networks (UWSNs) have received tremendous concern and interest in recent years. They find many applications, from underwater exploration and monitoring to naval and marine operations. However, due to the harsh and challenging aquatic environmental conditions, the networks have to face challenges such as limited bandwidth, long latency, and packet loss, which makes the communication channel unreliable. Numerous approaches have been proposed to enhance reliable data transmission in UWSNs. These approaches range from protocol modification to specialized algorithms tailored to UWSN requirements. This paper explores UWSNs, focusing on their applications, challenges, and reliability protocols. It provides a comparative analysis of different reliability protocols, highlighting their strengths and weaknesses. Furthermore, it examines available simulators and testbeds for UWSNs and their approaches to ensuring reliable data transfer.

关键词： Surveys Wireless sensor networks Protocols Packet loss Focusing Communication channels Data transfer Reliability Monitoring Faces

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Multiple Circular Ring-canals on the Starfish Routing Backbone in Wireless Sensor Networks 4

Multiple Circular Ring-canals on the Starfish Routing Backbo...

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4th International Conference on Sustainable Technologies for Industry 4.0, STI 2022

作者： Mozumder, Md. Daiyan Uddin Hosen, Riaj Hossain, Md. Mamun Habib, Md. Ahsan Roy, Palash Razzaque, Md. Abdur Green University of Bangladesh Department of Computer Science and Engineering Dhaka Bangladesh University of Dhaka Green Networking Research Group Department of Computer Science and Engineering Bangladesh Mawlana Bhashani Science and Technology University Department of Information and Communication Technology Bangladesh

ISBN: (纸本)9781665490450

To capture real-time data from Wireless Sensor Network Applications, utilizing unmanned aerial vehicles (UAVs) is becoming popular for minimizing end-to-end latency and reducing packet loss issues with extended network lifetime. Existing works in the literature are either limited by using a static sink or ground vehicle-supported mobile slink. In this paper, we introduce Unmanned Aerial Vehicles (UAVs) as mobile sinks moving around multiple circular ring canals on the basic starfish routing backbone (bSFR). We also develop generalized mathematical equations for determining an optimal number of ring canals required for a terrain with certain width and length along with their radii. The results of experiments carried out in Network Simulator version 2 (NS2) depict that the proposed routing model significantly improves the performances in terms of end-to-end latency and network lifetime. © 2022 IEEE.

关键词： Wireless sensor networks

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