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Articles 31 - 44 of 44
Full-Text Articles in Digital Communications and Networking
A Lightweight And Robust Interference Mitigation Scheme For Wireless Body Sensor Networks In Realistic Environments, S. Liang, Y. Ge, S. Jiang, Hwee-Pink Tan
A Lightweight And Robust Interference Mitigation Scheme For Wireless Body Sensor Networks In Realistic Environments, S. Liang, Y. Ge, S. Jiang, Hwee-Pink Tan
Research Collection School Of Computing and Information Systems
In dense deployments of Wireless Body Sensor Networks (WBSNs), inter-user interference significantly degrades network performance when multiple WBSN users stay in a small area such as hospitals. Due to the high dynamics of the environments, it is usually hard to schedule the transmissions of multiple WBSNs without a central controller. In this paper, we propose a robust and lightweight interference mitigation scheme for realistic WBSN systems through adaptive channel hopping. A WBSN testbed is set up to investigate the impact of inter-user interference on various performance metrics when different severity levels of interference are present. Based on the measurement results, …
Qos-Aware Data Transmission And Wireless Energy Transfer: Performance Modeling And Optimization, D. Niyato, P. Wang, W. L. Yeow, Hwee-Pink Tan
Qos-Aware Data Transmission And Wireless Energy Transfer: Performance Modeling And Optimization, D. Niyato, P. Wang, W. L. Yeow, Hwee-Pink Tan
Research Collection School Of Computing and Information Systems
With wireless energy transfer, a mobile node can operate perpetually without having a wired connection to charge its battery. In this paper, we present a quality of service (QoS) aware data transmission and wireless energy transfer for the mobile node. The node can request for wireless energy transfer or transmit a packet when the node is in a coverage area of an access point. The node supports service differentiation for different type of traffic (i.e., low and high priority data). To meet the QoS requirement of each traffic type, we present the performance modeling and optimization framework. The objective is …
Conception, Design And Construction Of A Remote Wifi Vehicle Using Arduino, Clayton Broman
Conception, Design And Construction Of A Remote Wifi Vehicle Using Arduino, Clayton Broman
Physics
The scope of this senior project was to make a wireless vehicle controlled via Internet Protocol. This vehicle operates remotely and without direct line of sight. Commands are sent from a program running on a laptop and transmitted using a wireless router. Visual data is retrieved from a network camera, mounted on the vehicle, in real-time, to see where you are going.
Mobile Device Vulnerabilities & Securities, Luke Rondeau
Mobile Device Vulnerabilities & Securities, Luke Rondeau
Senior Honors Theses and Projects
An investigation on current mobile vulnerabilities and research into security. Also, a proof of concept to show the ease of injecting an Android phone with a virus.
A Federated Architecture For Heuristics Packet Filtering In Cloud Networks, Ibrahim M. Waziri Jr
A Federated Architecture For Heuristics Packet Filtering In Cloud Networks, Ibrahim M. Waziri Jr
College of Graduate Studies: Theses & Dissertations
The rapid expansion in networking has provided tremendous opportunities to access an unparalleled amount of information. Everyone connects to a network to gain access and to share this information. However when someone connects to a public network, his private network and information becomes vulnerable to hackers and all kinds of security threats. Today, all networks needs to be secured, and one of the best security policies is firewall implementation.
Firewalls can be hardware or cloud based. Hardware based firewalls offer the advantage of faster response time, whereas cloud based firewalls are more flexible. In reality the best form of firewall …
Service And Communication Management In Cooperative Vehicular Networks, Olivia Brickley
Service And Communication Management In Cooperative Vehicular Networks, Olivia Brickley
Theses
The concept of Intelligent Transportation Systems (ITS) presents new R&D challenges for the transportation and ICT sectors and is currently receiving considerable interest from the research community. The primary objective of ITS is the creation of advanced road traffic systems for improved traffic safety, efficiency, and travelling comfort. Basic vehicle and roadside infrastructure collaboration allows for an increase in efficiency and safety and acts as the foundation for an extensive service set to achieve these ITS goals. Applications such as journey planning, automatic tolling and emergency warnings, among others, are envisaged in a system which can potentially reform modern transportation. …
การควบคุมคุณภาพการให้บริการโดยใช้แผนราคาในโครงข่ายเข้าถึง, ธนชาติ วีระพันธุ์
การควบคุมคุณภาพการให้บริการโดยใช้แผนราคาในโครงข่ายเข้าถึง, ธนชาติ วีระพันธุ์
Chulalongkorn University Theses and Dissertations (Chula ETD)
ปัจจุบันเทคโนโลยีการสื่อสารทั้งมีสายและไร้สายได้พัฒนาไปอย่างรวดเร็ว ประกอบกับความต้องการที่จะใช้บริการเทคโนโลยีการสื่อสารที่มากขึ้นอย่างต่อเนื่อง แต่ด้วยทรัพยากรที่มีอยู่อย่างจำกัด จึงทำให้เกิดความคับคั่งในระบบโครงข่ายเข้าถึง จึงเป็นสาเหตุทำให้โครงข่ายเกิดการประวิงและยากต่อการควบคุมคุณภาพการให้บริการ เพื่อแก้ปัญหาดังกล่าวจึงนำแผนราคาเข้ามาจูงใจในการเข้าใช้บริการ ในโครงข่าย ในวิทยานิพนธ์ฉบับนี้จำลองระบบด้วยแถวคอย M/M/1 โดยแบ่งรูปแบบของแถวคอยออกเป็น แบบเดี่ยว และ แบบลำดับความสำคัญ โดยกรณีของแถวคอยแบบเดี่ยว เมื่อระบบเกิดความคับคั่ง ทำให้มีการปรับราคา ผู้ใช้บริการที่ไม่ยอมรับราคาที่เปลี่ยนไปจะไม่ได้เข้าสู่ระบบ ส่วนในกรณีของแถว คอยแบบลำดับความสำคัญ เมื่อระบบเกิดความคับคั่ง ทำให้มีการปรับราคา ผู้ใช้บริการที่ไม่ยอมรับ ราคาที่เปลี่ยนไปสามารถเข้าสู่ระบบได้แต่ต้องรอให้ผู้ใช้บริการที่ยอมรับราคาที่เปลี่ยนไปใช้บริการเสร็จ ก่อน นอกจากนั้น แถวคอยลำดับความสำคัญยังแบ่งออกเป็นสองกรณี กรณีแรกคือผู้ใช้บริการ ที่ยอมรับราคาที่เปลี่ยนไปสามารถขัดจังหวะการใช้บริการของผู้ใช้บริการที่ไม่ยอมรับราคาที่เปลี่ยนไป ได้ทันที กรณีที่สองคือผู้ใช้บริการที่ยอมรับราคาที่เปลี่ยนไปต้องรอให้ผู้ใช้บริการที่ไม่ยอมรับราคาที่ เปลี่ยนไปใช้บริการเสร็จก่อน วิทยานิพนธ์ฉบับนี้เสนอการวิเคราะห์ทางคณิตศาสตร์และการจำลองระบบทางคอมพิวเตอร์เพื่อหาค่าที่เหมาะสมของความน่าจะเป็นที่ผู้ใช้บริการจะยอมรับราคาที่ปรับขึ้น ราคาใหม่ที่ปรับขึ้นอย่าง เหมาะสม เวลาประวิงของแพ็กเกตเฉลี่ย เวลาเฉลี่ยที่แพ็กเกตอยู่ในระบบ ความน่าจะเป็นที่เวลา ประวิงของแพ็กเกดจะมีค่ามากกว่าเวลาประวิงของแพ็กเกตที่กำหนด และรายได้ที่คาดหวังเฉลี่ย โดยผลลัพธ์จากการวิเคราะห์ทางคณิตศาสตร์และการจำลองระบบทางคอมพิวเตอร์ที่นำแผนราคามา ประยุกต์ใช้กับรูปแบบของแถวคอยทั้งสองสามารถควบคุมคุณภาพการให้บริการได้ตามค่าที่กำหนด จากการศึกษาด้วยการวิเคราะห์และการจำลองระบบด้วยคอมพิวเตอร์ให้ผลลัพธ์ที่สอดคล้องกัน
New Operations On Intuitionistic Fuzzy Soft Sets Based On First Zadeh's Logical Operators, Florentin Smarandache, Said Broumi, Pinaki Majumdar
New Operations On Intuitionistic Fuzzy Soft Sets Based On First Zadeh's Logical Operators, Florentin Smarandache, Said Broumi, Pinaki Majumdar
Branch Mathematics and Statistics Faculty and Staff Publications
In this paper , we have defined First Zadeh’s implication , First Zadeh’s intuitionistic fuzzy conjunction and intuitionistic fuzzy disjunction of two intuitionistic fuzzy soft sets and some their basic properties are studied with proofs and examples.
A Hypernet Architecture, Shufeng Huang
A Hypernet Architecture, Shufeng Huang
Theses and Dissertations--Computer Science
Network virtualization is becoming a fundamental building block of future Internet architectures. By adding networking resources into the “cloud”, it is possible for users to rent virtual routers from the underlying network infrastructure, connect them with virtual channels to form a virtual network, and tailor the virtual network (e.g., load application-specific networking protocols, libraries and software stacks on to the virtual routers) to carry out a specific task. In addition, network virtualization technology allows such special-purpose virtual networks to co-exist on the same set of network infrastructure without interfering with each other.
Although the underlying network resources needed to support …
Efficient Cooperative Mimo Paradigms For Cognitive Radio Networks, Wei Chen, Liang Hong, Xiaoqian Chen
Efficient Cooperative Mimo Paradigms For Cognitive Radio Networks, Wei Chen, Liang Hong, Xiaoqian Chen
Computer Science Faculty Research
This paper investigates the benefits that cooperative communication brings to cognitive radio networks. We focus on cooperative Multiple Input Multiple Output (MIMO) technology, where multiple distributed single-antenna secondary users cooperate on data transmission and reception. Three cooperative MIMO paradigms are proposed to maximize the diversity gain and significantly improve the performance of overlay, underlay and interweave systems. In the paradigm for overlay systems the secondary users can assist (relay) the primary transmissions even when they are far away from the primary users. In the paradigm for underlay systems the secondary users can share the primary users’ frequency resources without any …
Cross-Domain Password-Based Authenticated Key Exchange Revisited, Liqun Chen, Hoon Wei Lim, Guomin Yang
Cross-Domain Password-Based Authenticated Key Exchange Revisited, Liqun Chen, Hoon Wei Lim, Guomin Yang
Research Collection School Of Computing and Information Systems
We revisit the problem of secure cross-domain communication between two users belonging to different security domains within an open and distributed environment. Existing approaches presuppose that either the users are in possession of public key certificates issued by a trusted certificate authority (CA), or the associated domain authentication servers share a long-term secret key. In this article, we propose a generic framework for designing four-party password-based authenticated key exchange (4PAKE) protocols. Our framework takes a different approach from previous work. The users are not required to have public key certificates, but they simply reuse their login passwords, which they share …
Neuromodulation Based Control Of Autonomous Robots On A Cloud Computing Platform, Cameron Muhammad
Neuromodulation Based Control Of Autonomous Robots On A Cloud Computing Platform, Cameron Muhammad
College of Graduate Studies: Theses & Dissertations
In recent years, the advancement of neurobiologically plausible models and computer networking has resulted in new ways of implementing control systems on robotic platforms. The work presents a control approach based on vertebrate neuromodulation and its implementation on autonomous robots in the open-source, open-access environment of robot operating system (ROS). A spiking neural network (SNN) is used to model the neuromodulatory function for generating context based behavioral responses of the robots to sensory input signals. The neural network incorporates three types of neurons- cholinergic and noradrenergic (ACh/NE) neurons for attention focusing and action selection, dopaminergic (DA) neurons for rewards- and …
Performance Evaluation Of A Technology Independent Security Gateway For Next Generation Networks, Fudong Li, Nathan Clarke, Steven Furnell, Is-Mkwawa Mkwawa
Performance Evaluation Of A Technology Independent Security Gateway For Next Generation Networks, Fudong Li, Nathan Clarke, Steven Furnell, Is-Mkwawa Mkwawa
Research outputs 2014 to 2021
With the all IP based Next Generation Networks being deployed around the world, the use of real-time multimedia service applications is being extended from normal daily communications to emergency situations. However, currently different emergency providers utilise differing networks and different technologies. As such, conversations could be terminated at the setup phase or data could be transmitted in plaintext should incompatibility issues exit between terminals. To this end, a novel security gateway that can provide the necessary security support for incompatible terminals was proposed, developed and implemented to ensure the successful establishment of secure real-time multimedia conversations. A series of experiments …
Evaluating Electronic Market Designs: The Effects Of Competitive Arousal And Social Facilitation On Electronic Group Buying, Yuecheng Yu, Karl R. Lang, Alex Pelaez
Evaluating Electronic Market Designs: The Effects Of Competitive Arousal And Social Facilitation On Electronic Group Buying, Yuecheng Yu, Karl R. Lang, Alex Pelaez
Research Collection School Of Computing and Information Systems
This article presents an evaluation approach foralternative electronic market designs and examines theimpact of competitive arousal under time pressure onmarket performance in a group-buying setting. Drawingon theory from economics, decision theory, andinformation systems, we present a competitive arousalmodel for a social buying setting that posits thatintroducing competitive arousal among buyers reducesbuyer profits and that social facilitation can mitigate thesecosts through better task completion and time tocompletion rates. Using an economic experiment, wefound that rivalry has a negative effect on buyer profitsbut also that competitive arousal increases the efficiencyof social facilitation in terms of group formation. Wediscuss the implications of these …