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Florida International University
1.
Ramalingam, Mukesh.
Vertical Handoff Target Selection in a Heterogeneous Wireless Network Using Fuzzy ELECTRE.
Degree: MS, Electrical Engineering, 2015, Florida International University
URL: https://digitalcommons.fiu.edu/etd/2014 
;
10.25148/etd.FIDC000134
;
FIDC000134
► Global connectivity is on the verge of becoming a reality to provide high-speed, high-quality, and reliable communication channels for mobile devices at anytime, anywhere…
(more)
▼ Global connectivity is on the verge of becoming a reality to provide high-speed, high-quality, and reliable communication channels for mobile devices at anytime, anywhere in the world. In a heterogeneous wireless environment, one of the key ingredients to provide efficient and ubiquitous computing with guaranteed quality and continuity of service is the design of intelligent handoff algorithms. Traditional single-metric handoff decision algorithms, such as Received Signal Strength (RSS), are not efficient and intelligent enough to minimize the number of unnecessary handoffs, decision delays, call-dropping and blocking probabilities.
This research presents a novel approach for of a Multi Attribute Decision Making (MADM) model based on an integrated fuzzy approach for target network selection.
Advisors/Committee Members: Kang K. Yen, Jean H. Andrian, Deng Pan.
Subjects/Keywords: Vertical Handoff; Fuzzy logic; ELECTRE; MADM; Electrical and Computer Engineering
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APA (6th Edition):
Ramalingam, M. (2015). Vertical Handoff Target Selection in a Heterogeneous Wireless Network Using Fuzzy ELECTRE. (Thesis). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/2014 ; 10.25148/etd.FIDC000134 ; FIDC000134
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Ramalingam, Mukesh. “Vertical Handoff Target Selection in a Heterogeneous Wireless Network Using Fuzzy ELECTRE.” 2015. Thesis, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/2014 ; 10.25148/etd.FIDC000134 ; FIDC000134.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Ramalingam, Mukesh. “Vertical Handoff Target Selection in a Heterogeneous Wireless Network Using Fuzzy ELECTRE.” 2015. Web. 17 Jan 2021.
Vancouver:
Ramalingam M. Vertical Handoff Target Selection in a Heterogeneous Wireless Network Using Fuzzy ELECTRE. [Internet] [Thesis]. Florida International University; 2015. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/2014 ; 10.25148/etd.FIDC000134 ; FIDC000134.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Ramalingam M. Vertical Handoff Target Selection in a Heterogeneous Wireless Network Using Fuzzy ELECTRE. [Thesis]. Florida International University; 2015. Available from: https://digitalcommons.fiu.edu/etd/2014 ; 10.25148/etd.FIDC000134 ; FIDC000134
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Florida International University
2.
Kaleem, Faisal.
VHITS: Vertical Handoff Initiation and Target Selection in a Heterogeneous Wireless Network.
Degree: PhD, 2012, Florida International University
URL: https://digitalcommons.fiu.edu/etd/602
;
10.25148/etd.FI12050206
;
FI12050206
► Global connectivity, for anyone, at anyplace, at anytime, to provide high-speed, high-quality, and reliable communication channels for mobile devices, is now becoming a reality.…
(more)
▼ Global connectivity, for anyone, at anyplace, at anytime, to provide high-speed, high-quality, and reliable communication channels for mobile devices, is now becoming a reality. The credit mainly goes to the recent technological advances in wireless communications comprised of a wide range of technologies, services, and applications to fulfill the particular needs of end-users in different deployment scenarios (Wi-Fi, WiMAX, and 3G/4G cellular systems). In such a heterogeneous wireless environment, one of the key ingredients to provide efficient ubiquitous computing with guaranteed quality and continuity of service is the design of intelligent handoff algorithms.
Traditional single-metric handoff decision algorithms, such as Received Signal Strength (RSS) based, are not efficient and intelligent enough to minimize the number of unnecessary handoffs, decision delays, and call-dropping and/or blocking probabilities.
This research presented a novel approach for the design and implementation of a multi-criteria vertical handoff algorithm for heterogeneous wireless networks. Several parallel Fuzzy Logic Controllers were utilized in combination with different types of ranking algorithms and metric weighting schemes to implement two major modules: the first module estimated the necessity of handoff, and the other module was developed to select the best network as the target of handoff.
Simulations based on different traffic classes, utilizing various types of wireless networks were carried out by implementing a wireless test-bed inspired by the concept of Rudimentary Network Emulator (RUNE).
Simulation results indicated that the proposed scheme provided better performance in terms of minimizing the unnecessary handoffs, call dropping, and call blocking and handoff blocking probabilities. When subjected to Conversational traffic and compared against the RSS-based reference algorithm, the proposed scheme, utilizing the FTOPSIS ranking algorithm, was able to reduce the average outage probability of MSs moving with high speeds by 17%, new call blocking probability by 22%, the handoff blocking probability by 16%, and the average handoff rate by 40%. The significant reduction in the resulted handoff rate provides MS with efficient power consumption, and more available battery life. These percentages indicated a higher probability of guaranteed session continuity and quality of the currently utilized service, resulting in higher user satisfaction levels.
Advisors/Committee Members: Kang K. Yen, Abolfazl Mehbodniya, Kaushik Dutta, Deng Pan, Hai Deng.
Subjects/Keywords: Heterogeneous Wireless Networks; Fuzzy Logic; Multi-Attribute Decision Making; Handoff
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APA (6th Edition):
Kaleem, F. (2012). VHITS: Vertical Handoff Initiation and Target Selection in a Heterogeneous Wireless Network. (Doctoral Dissertation). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/602 ; 10.25148/etd.FI12050206 ; FI12050206
Chicago Manual of Style (16th Edition):
Kaleem, Faisal. “VHITS: Vertical Handoff Initiation and Target Selection in a Heterogeneous Wireless Network.” 2012. Doctoral Dissertation, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/602 ; 10.25148/etd.FI12050206 ; FI12050206.
MLA Handbook (7th Edition):
Kaleem, Faisal. “VHITS: Vertical Handoff Initiation and Target Selection in a Heterogeneous Wireless Network.” 2012. Web. 17 Jan 2021.
Vancouver:
Kaleem F. VHITS: Vertical Handoff Initiation and Target Selection in a Heterogeneous Wireless Network. [Internet] [Doctoral dissertation]. Florida International University; 2012. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/602 ; 10.25148/etd.FI12050206 ; FI12050206.
Council of Science Editors:
Kaleem F. VHITS: Vertical Handoff Initiation and Target Selection in a Heterogeneous Wireless Network. [Doctoral Dissertation]. Florida International University; 2012. Available from: https://digitalcommons.fiu.edu/etd/602 ; 10.25148/etd.FI12050206 ; FI12050206
Florida International University
3.
Du, Yu.
Multiuser Detection in Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing Systems by Blind Signal Separation Techniques.
Degree: PhD, Electrical Engineering, 2012, Florida International University
URL: https://digitalcommons.fiu.edu/etd/630
;
10.25148/etd.FI12050236
;
FI12050236
► This dissertation introduces three novel multiuser detection approaches in Multiple Input Multiple Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) systems by blind signal separation…
(more)
▼ This dissertation introduces three novel multiuser detection approaches in Multiple Input Multiple Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) systems by blind signal separation (BSS) techniques. The conventional methodologies for multiuser detection have to retransmit channel state information (CSI) constantly from the transmitter in MIMO ODFM systems at the cost of economic efficiency, because they require more channel resources to improve the communication quality. Compared with the traditional methodologies, the proposed BSS methods are relatively efficient approaches without the unnecessary retransmission of channel state information.
The current methodologies apply the space-time coding or the spatial multiplexing to implement an MIMO OFDM system, which requires relatively complex antenna design and allocation in the transmitter. The proposed Spatial Division Multiple Access (SDMA) method enables different mobile users to share the same bandwidth simultaneously in different geographical locations, and this scheme requires only one antenna for each mobile user. Therefore, it greatly simplifies the antenna design and allocation.
The goal of this dissertation is to design and implement three blind multiuser detection schemes without knowing the channel state information or the channel transfer function in the SDMA-based uplink MIMO OFDM system. The proposed scenarios include: (a) the BSS-only scheme, (b) the BSS-Minimum Mean Square Error (MMSE) scheme, and (c) the BSS-Minimum Bit Error Ratio (MBER) scheme.
The major contributions of the dissertation include: (a) the three proposed schemes save the commercially expensive cost of channel resources; (b) the proposed SDMA-based uplink MIMO OFDM system simplifies the requirements of antennas for mobile users; (c) the three proposed schemes obtain high parallel computing efficiency through paralleled subcarriers; (d) the proposed BSS-MBER scheme gains the best BER performance; (e) the proposed BSS-MMSE method yields the best computational efficiency; and (f) the proposed BSS-only scenario balances the BER performance and computational complexity.
Advisors/Committee Members: Kang K. Yen, Jean H. Andrian, Deng Pan, Yimin Zhu.
Subjects/Keywords: Multiuser Detection; Multiple Input Multiple Output; Orthogonal Frequency Division Multiplexing; Blind Signal Separation
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APA (6th Edition):
Du, Y. (2012). Multiuser Detection in Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing Systems by Blind Signal Separation Techniques. (Doctoral Dissertation). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/630 ; 10.25148/etd.FI12050236 ; FI12050236
Chicago Manual of Style (16th Edition):
Du, Yu. “Multiuser Detection in Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing Systems by Blind Signal Separation Techniques.” 2012. Doctoral Dissertation, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/630 ; 10.25148/etd.FI12050236 ; FI12050236.
MLA Handbook (7th Edition):
Du, Yu. “Multiuser Detection in Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing Systems by Blind Signal Separation Techniques.” 2012. Web. 17 Jan 2021.
Vancouver:
Du Y. Multiuser Detection in Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing Systems by Blind Signal Separation Techniques. [Internet] [Doctoral dissertation]. Florida International University; 2012. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/630 ; 10.25148/etd.FI12050236 ; FI12050236.
Council of Science Editors:
Du Y. Multiuser Detection in Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing Systems by Blind Signal Separation Techniques. [Doctoral Dissertation]. Florida International University; 2012. Available from: https://digitalcommons.fiu.edu/etd/630 ; 10.25148/etd.FI12050236 ; FI12050236
Florida International University
4.
Wu, Nansong.
Resource Allocation, Scheduling and Feedback Reduction in Multiple Input Multiple Output (MIMO) Orthogonal Frequency-Division Multiplexing (OFDM) Systems.
Degree: PhD, Electrical Engineering, 2012, Florida International University
URL: https://digitalcommons.fiu.edu/etd/637
;
10.25148/etd.FI12050248
;
FI12050248
► The number of wireless systems, services, and users are constantly increasing and therefore the bandwidth requirements have become higher. One of the most robust…
(more)
▼ The number of wireless systems, services, and users are constantly increasing and therefore the bandwidth requirements have become higher. One of the most robust modulations is Orthogonal Frequency-Division Multiplexing (OFDM). It has been considered as an attractive solution for future broadband wireless communications.
This dissertation investigates bit and power allocation, joint resource allocation, user scheduling, and limited feedback problem in multi-user OFDM systems. The following dissertation contributes to improved OFDM systems in the following manner. (1) A low complexity sub-carrier, power, and bit allocation algorithm is proposed. This algorithm has lower computational complexity and results in performance that is comparable to that of the existing algorithms. (2) Variations of the proportional fair scheduling scheme are proposed and analyzed. The proposed scheme improves system throughput and delay time, and achieves higher throughput without sacrificing fairness which makes it a better scheme in terms of efficiency and fairness. (3) A DCT feedback compression algorithm based on sorting is proposed. This algorithm uses sorting to increase the correlation between feedback channel quality information of frequency selective channels. The feedback overhead of system is successfully reduced.
Advisors/Committee Members: Kang K. Yen, Jean H. Andrian, Deng Pan, Yimin Zhu.
Subjects/Keywords: MIMO; OFDM; Resource; Scheduling; Feedback
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APA (6th Edition):
Wu, N. (2012). Resource Allocation, Scheduling and Feedback Reduction in Multiple Input Multiple Output (MIMO) Orthogonal Frequency-Division Multiplexing (OFDM) Systems. (Doctoral Dissertation). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/637 ; 10.25148/etd.FI12050248 ; FI12050248
Chicago Manual of Style (16th Edition):
Wu, Nansong. “Resource Allocation, Scheduling and Feedback Reduction in Multiple Input Multiple Output (MIMO) Orthogonal Frequency-Division Multiplexing (OFDM) Systems.” 2012. Doctoral Dissertation, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/637 ; 10.25148/etd.FI12050248 ; FI12050248.
MLA Handbook (7th Edition):
Wu, Nansong. “Resource Allocation, Scheduling and Feedback Reduction in Multiple Input Multiple Output (MIMO) Orthogonal Frequency-Division Multiplexing (OFDM) Systems.” 2012. Web. 17 Jan 2021.
Vancouver:
Wu N. Resource Allocation, Scheduling and Feedback Reduction in Multiple Input Multiple Output (MIMO) Orthogonal Frequency-Division Multiplexing (OFDM) Systems. [Internet] [Doctoral dissertation]. Florida International University; 2012. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/637 ; 10.25148/etd.FI12050248 ; FI12050248.
Council of Science Editors:
Wu N. Resource Allocation, Scheduling and Feedback Reduction in Multiple Input Multiple Output (MIMO) Orthogonal Frequency-Division Multiplexing (OFDM) Systems. [Doctoral Dissertation]. Florida International University; 2012. Available from: https://digitalcommons.fiu.edu/etd/637 ; 10.25148/etd.FI12050248 ; FI12050248
Florida International University
5.
Liu, Guanglei.
Practical Dynamic Thermal Management on Intel Desktop Computer.
Degree: PhD, Electrical Engineering, 2012, Florida International University
URL: https://digitalcommons.fiu.edu/etd/688
;
10.25148/etd.FI12080613
;
FI12080613
► Fueled by increasing human appetite for high computing performance, semiconductor technology has now marched into the deep sub-micron era. As transistor size keeps shrinking,…
(more)
▼ Fueled by increasing human appetite for high computing performance, semiconductor technology has now marched into the deep sub-micron era. As transistor size keeps shrinking, more and more transistors are integrated into a single chip. This has increased tremendously the power consumption and heat generation of IC chips. The rapidly growing heat dissipation greatly increases the packaging/cooling costs, and adversely affects the performance and reliability of a computing system. In addition, it also reduces the processor's life span and may even crash the entire computing system. Therefore, dynamic thermal management (DTM) is becoming a critical problem in modern computer system design.
Extensive theoretical research has been conducted to study the DTM problem. However, most of them are based on theoretically idealized assumptions or simplified models. While these models and assumptions help to greatly simplify a complex problem and make it theoretically manageable, practical computer systems and applications must deal with many practical factors and details beyond these models or assumptions.
The goal of our research was to develop a test platform that can be used to validate theoretical results on DTM under well-controlled conditions, to identify the limitations of existing theoretical results, and also to develop new and practical DTM techniques. This dissertation details the background and our research efforts in this endeavor. Specifically, in our research, we first developed a customized test platform based on an Intel desktop. We then tested a number of related theoretical works and examined their limitations under the practical hardware environment. With these limitations in mind, we developed a new reactive thermal management algorithm for single-core computing systems to optimize the throughput under a peak temperature constraint. We further extended our research to a multicore platform and developed an effective proactive DTM technique for throughput maximization on multicore processor based on task migration and dynamic voltage frequency scaling technique. The significance of our research lies in the fact that our research complements the current extensive theoretical research in dealing with increasingly critical thermal problems and enabling the continuous evolution of high performance computing systems.
Advisors/Committee Members: Gang Quan, Nezih Pala, Deng Pan, Jean H. Andrian, Kang K. Yen.
Subjects/Keywords: Dynamic thermal management; thermal-aware scheduling; throughput maximization; practical hardware platform; temperature
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APA (6th Edition):
Liu, G. (2012). Practical Dynamic Thermal Management on Intel Desktop Computer. (Doctoral Dissertation). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/688 ; 10.25148/etd.FI12080613 ; FI12080613
Chicago Manual of Style (16th Edition):
Liu, Guanglei. “Practical Dynamic Thermal Management on Intel Desktop Computer.” 2012. Doctoral Dissertation, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/688 ; 10.25148/etd.FI12080613 ; FI12080613.
MLA Handbook (7th Edition):
Liu, Guanglei. “Practical Dynamic Thermal Management on Intel Desktop Computer.” 2012. Web. 17 Jan 2021.
Vancouver:
Liu G. Practical Dynamic Thermal Management on Intel Desktop Computer. [Internet] [Doctoral dissertation]. Florida International University; 2012. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/688 ; 10.25148/etd.FI12080613 ; FI12080613.
Council of Science Editors:
Liu G. Practical Dynamic Thermal Management on Intel Desktop Computer. [Doctoral Dissertation]. Florida International University; 2012. Available from: https://digitalcommons.fiu.edu/etd/688 ; 10.25148/etd.FI12080613 ; FI12080613
Florida International University
6.
Abbaspour, Ali Reza.
Active Fault-Tolerant Control Design for Nonlinear Systems.
Degree: PhD, Electrical Engineering, 2018, Florida International University
URL: https://digitalcommons.fiu.edu/etd/3917
;
FIDC006990
► Faults and failures in system components are the two main reasons for the instability and the degradation in control performance. In recent decades, fault-tolerant…
(more)
▼ Faults and failures in system components are the two main reasons for the instability and the degradation in control performance. In recent decades, fault-tolerant control (FTC) approaches were introduced to improve the resiliency of the control system against faults and failures. In general, FTC techniques are classified into two major groups: passive and active. Passive FTC systems do not rely on the fault information to control the system and are closely related to the robust control techniques while an active FTC system performs based on the information received from the fault detection and isolation (FDI) system, and the fault problem will be tackled more intelligently without affecting other parts of the system.
This dissertation technically reviews fault and failure causes in control systems and finds solutions to compensate for their effects. Recent achievements in FDI approaches, and active and passive FTC designs are investigated. Thorough comparisons of several different aspects are conducted to understand the advantages and disadvantages of different FTC techniques to motivate researchers to further developing FTC, and FDI approaches.
Then, a novel active FTC system framework based on online FDI is presented which has significant advantages in comparison with other state of the art FTC strategies. To design the proposed active FTC, a new FDI approach is introduced which uses the artificial neural network (ANN) and a model based observer to detect and isolate faults and failures in sensors and actuators. In addition, the extended Kalman filter (EKF) is introduced to tune ANN weights and improve the ANN performance. Then, the FDI signal combined with a nonlinear dynamic inversion (NDI) technique is used to compensate for the faults in the actuators and sensors of a nonlinear system. The proposed scheme detects and accommodates faults in the actuators and sensors of the system in real-time without the need of controller reconfiguration.
The proposed active FTC approach is used to design a control system for three different applications: Unmanned aerial vehicle (UAV), load frequency control system, and proton exchange membrane fuel cell (PEMFC) system. The performance of the designed controllers are investigated through numerical simulations by comparison with conventional control approaches, and their advantages are demonstrated.
Advisors/Committee Members: Kang K. Yen, Jean Andrian, Arif I. Sarwat, Arman Sargolzaei, Alexander Perez-Pons.
Subjects/Keywords: Fault Detection; Active Fault Tolerant Control; Resiliency; Nonlinear Control; Controls and Control Theory; Navigation, Guidance, Control and Dynamics
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APA (6th Edition):
Abbaspour, A. R. (2018). Active Fault-Tolerant Control Design for Nonlinear Systems. (Doctoral Dissertation). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/3917 ; FIDC006990
Chicago Manual of Style (16th Edition):
Abbaspour, Ali Reza. “Active Fault-Tolerant Control Design for Nonlinear Systems.” 2018. Doctoral Dissertation, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/3917 ; FIDC006990.
MLA Handbook (7th Edition):
Abbaspour, Ali Reza. “Active Fault-Tolerant Control Design for Nonlinear Systems.” 2018. Web. 17 Jan 2021.
Vancouver:
Abbaspour AR. Active Fault-Tolerant Control Design for Nonlinear Systems. [Internet] [Doctoral dissertation]. Florida International University; 2018. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/3917 ; FIDC006990.
Council of Science Editors:
Abbaspour AR. Active Fault-Tolerant Control Design for Nonlinear Systems. [Doctoral Dissertation]. Florida International University; 2018. Available from: https://digitalcommons.fiu.edu/etd/3917 ; FIDC006990
Florida International University
7.
Han, Qiushi.
Energy-aware Fault-tolerant Scheduling for Hard Real-time Systems.
Degree: PhD, Electrical Engineering, 2015, Florida International University
URL: https://digitalcommons.fiu.edu/etd/2222
;
10.25148/etd.FIDC000077
;
FIDC000077
► Over the past several decades, we have experienced tremendous growth of real-time systems in both scale and complexity. This progress is made possible largely…
(more)
▼ Over the past several decades, we have experienced tremendous growth of real-time systems in both scale and complexity. This progress is made possible largely due to advancements in semiconductor technology that have enabled the continuous scaling and massive integration of transistors on a single chip. In the meantime, however, the relentless transistor scaling and integration have dramatically increased the power consumption and degraded the system reliability substantially. Traditional real-time scheduling techniques with the sole emphasis on guaranteeing timing constraints have become insufficient.
In this research, we studied the problem of how to develop advanced scheduling methods on hard real-time systems that are subject to multiple design constraints, in particular, timing, energy consumption, and reliability constraints. To this end, we first investigated the energy minimization problem with fault-tolerance requirements for dynamic-priority based hard real-time tasks on a single-core processor. Three scheduling algorithms have been developed to judiciously make tradeoffs between fault tolerance and energy reduction since both design objectives usually conflict with each other. We then shifted our research focus from single-core platforms to multi-core platforms as the latter are becoming mainstream. Specifically, we launched our research in fault-tolerant multi-core scheduling for fixed-priority tasks as fixed-priority scheduling is one of the most commonly used schemes in the industry today. For such systems, we developed several checkpointing-based partitioning strategies with the joint consideration of fault tolerance and energy minimization. At last, we exploited the implicit relations between real-time tasks in order to judiciously make partitioning decisions with the aim of improving system schedulability.
According to the simulation results, our design strategies have been shown to be very promising for emerging systems and applications where timeliness, fault-tolerance, and energy reduction need to be simultaneously addressed.
Advisors/Committee Members: Gang Quan, Kang K. Yen, Jean H. Andrian, Nezih Pala, Deng Pan.
Subjects/Keywords: real-time; fault-tolerant; energy minimization; Electrical and Computer Engineering
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APA (6th Edition):
Han, Q. (2015). Energy-aware Fault-tolerant Scheduling for Hard Real-time Systems. (Doctoral Dissertation). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/2222 ; 10.25148/etd.FIDC000077 ; FIDC000077
Chicago Manual of Style (16th Edition):
Han, Qiushi. “Energy-aware Fault-tolerant Scheduling for Hard Real-time Systems.” 2015. Doctoral Dissertation, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/2222 ; 10.25148/etd.FIDC000077 ; FIDC000077.
MLA Handbook (7th Edition):
Han, Qiushi. “Energy-aware Fault-tolerant Scheduling for Hard Real-time Systems.” 2015. Web. 17 Jan 2021.
Vancouver:
Han Q. Energy-aware Fault-tolerant Scheduling for Hard Real-time Systems. [Internet] [Doctoral dissertation]. Florida International University; 2015. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/2222 ; 10.25148/etd.FIDC000077 ; FIDC000077.
Council of Science Editors:
Han Q. Energy-aware Fault-tolerant Scheduling for Hard Real-time Systems. [Doctoral Dissertation]. Florida International University; 2015. Available from: https://digitalcommons.fiu.edu/etd/2222 ; 10.25148/etd.FIDC000077 ; FIDC000077
Florida International University
8.
Zeng, Kaiman.
Next Generation of Product Search and Discovery.
Degree: PhD, Electrical Engineering, 2015, Florida International University
URL: https://digitalcommons.fiu.edu/etd/2312
;
10.25148/etd.FIDC000207
;
FIDC000207
► Online shopping has become an important part of people’s daily life with the rapid development of e-commerce. In some domains such as books, electronics,…
(more)
▼ Online shopping has become an important part of people’s daily life with the rapid development of e-commerce. In some domains such as books, electronics, and CD/DVDs, online shopping has surpassed or even replaced the traditional shopping method. Compared with traditional retailing, e-commerce is information intensive. One of the key factors to succeed in e-business is how to facilitate the consumers’ approaches to discover a product. Conventionally a product search engine based on a keyword search or category browser is provided to help users find the product information they need. The general goal of a product search system is to enable users to quickly locate information of interest and to minimize users’ efforts in search and navigation. In this process human factors play a significant role. Finding product information could be a tricky task and may require an intelligent use of search engines, and a non-trivial navigation of multilayer categories. Searching for useful product information can be frustrating for many users, especially those inexperienced users.
This dissertation focuses on developing a new visual product search system that effectively extracts the properties of unstructured products, and presents the possible items of attraction to users so that the users can quickly locate the ones they would be most likely interested in. We designed and developed a feature extraction algorithm that retains product color and local pattern features, and the experimental evaluation on the benchmark dataset demonstrated that it is robust against common geometric and photometric visual distortions. Besides, instead of ignoring product text information, we investigated and developed a ranking model learned via a unified probabilistic hypergraph that is capable of capturing correlations among product visual content and textual content. Moreover, we proposed and designed a fuzzy hierarchical co-clustering algorithm for the collaborative filtering product recommendation. Via this method, users can be automatically grouped into different interest communities based on their behaviors. Then, a customized recommendation can be performed according to these implicitly detected relations. In summary, the developed search system performs much better in a visual unstructured product search when compared with state-of-art approaches. With the comprehensive ranking scheme and the collaborative filtering recommendation module, the user’s overhead in locating the information of value is reduced, and the user’s experience of seeking for useful product information is optimized.
Advisors/Committee Members: Kang K. Yen, Jean H. Andrian, Hai Deng, Deng Pan, Bogdan Carbunar.
Subjects/Keywords: visual search; content based image retrieval; ranking; hypergraph learning; recommendation; collaborative filtering; clustering; Other Electrical and Computer Engineering; Signal Processing
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APA (6th Edition):
Zeng, K. (2015). Next Generation of Product Search and Discovery. (Doctoral Dissertation). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/2312 ; 10.25148/etd.FIDC000207 ; FIDC000207
Chicago Manual of Style (16th Edition):
Zeng, Kaiman. “Next Generation of Product Search and Discovery.” 2015. Doctoral Dissertation, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/2312 ; 10.25148/etd.FIDC000207 ; FIDC000207.
MLA Handbook (7th Edition):
Zeng, Kaiman. “Next Generation of Product Search and Discovery.” 2015. Web. 17 Jan 2021.
Vancouver:
Zeng K. Next Generation of Product Search and Discovery. [Internet] [Doctoral dissertation]. Florida International University; 2015. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/2312 ; 10.25148/etd.FIDC000207 ; FIDC000207.
Council of Science Editors:
Zeng K. Next Generation of Product Search and Discovery. [Doctoral Dissertation]. Florida International University; 2015. Available from: https://digitalcommons.fiu.edu/etd/2312 ; 10.25148/etd.FIDC000207 ; FIDC000207
9.
Qu, Yipeng.
Wireless Sensor Network Deployment.
Degree: PhD, Electrical Engineering, 2013, Florida International University
URL: https://digitalcommons.fiu.edu/etd/854
;
10.25148/etd.FI13042317
;
FI13042317
► Wireless Sensor Networks (WSNs) are widely used for various civilian and military applications, and thus have attracted significant interest in recent years. This work…
(more)
▼ Wireless Sensor Networks (WSNs) are widely used for various civilian and military applications, and thus have attracted significant interest in recent years. This work investigates the important problem of optimal deployment of WSNs in terms of coverage and energy consumption. Five deployment algorithms are developed for maximal sensing range and minimal energy consumption in order to provide optimal sensing coverage and maximum lifetime. Also, all developed algorithms include self-healing capabilities in order to restore the operation of WSNs after a number of nodes have become inoperative.
Two centralized optimization algorithms are developed, one based on Genetic Algorithms (GAs) and one based on Particle Swarm Optimization (PSO). Both optimization algorithms use powerful central nodes to calculate and obtain the global optimum outcomes. The GA is used to determine the optimal tradeoff between network coverage and overall distance travelled by fixed range sensors. The PSO algorithm is used to ensure 100% network coverage and minimize the energy consumed by mobile and range-adjustable sensors. Up to 30% - 90% energy savings can be provided in different scenarios by using the developed optimization algorithms thereby extending the lifetime of the sensor by 1.4 to 10 times.
Three distributed optimization algorithms are also developed to relocate the sensors and optimize the coverage of networks with more stringent design and cost constraints. Each algorithm is cooperatively executed by all sensors to achieve better coverage. Two of our algorithms use the relative positions between sensors to optimize the coverage and energy savings. They provide 20% to 25% more energy savings than existing solutions. Our third algorithm is developed for networks without self-localization capabilities and supports the optimal deployment of such networks without requiring the use of expensive geolocation hardware or energy consuming localization algorithms. This is important for indoor monitoring applications since current localization algorithms cannot provide good accuracy for sensor relocation algorithms in such indoor environments. Also, no sensor redeployment algorithms, which can operate without self-localization systems, developed before our work.
Advisors/Committee Members: Stavros V. Georgakopoulos, Jean H. Andrian, Kang K. Yen, Mohammed Hadi, Manos M. Tentzeris.
Subjects/Keywords: Wireless sensor networks; relocation; optimization; area coverage; energy consumption; Electrical and Electronics; Systems and Communications
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APA (6th Edition):
Qu, Y. (2013). Wireless Sensor Network Deployment. (Doctoral Dissertation). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/854 ; 10.25148/etd.FI13042317 ; FI13042317
Chicago Manual of Style (16th Edition):
Qu, Yipeng. “Wireless Sensor Network Deployment.” 2013. Doctoral Dissertation, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/854 ; 10.25148/etd.FI13042317 ; FI13042317.
MLA Handbook (7th Edition):
Qu, Yipeng. “Wireless Sensor Network Deployment.” 2013. Web. 17 Jan 2021.
Vancouver:
Qu Y. Wireless Sensor Network Deployment. [Internet] [Doctoral dissertation]. Florida International University; 2013. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/854 ; 10.25148/etd.FI13042317 ; FI13042317.
Council of Science Editors:
Qu Y. Wireless Sensor Network Deployment. [Doctoral Dissertation]. Florida International University; 2013. Available from: https://digitalcommons.fiu.edu/etd/854 ; 10.25148/etd.FI13042317 ; FI13042317
10.
Sargolzaei, Arman.
Time-Delay Switch Attack on Networked Control Systems, Effects and Countermeasures.
Degree: PhD, Electrical Engineering, 2015, Florida International University
URL: https://digitalcommons.fiu.edu/etd/2175
;
10.25148/etd.FIDC000126
;
FIDC000126
► In recent years, the security of networked control systems (NCSs) has been an important challenge for many researchers. Although the security schemes for networked…
(more)
▼ In recent years, the security of networked control systems (NCSs) has been an important challenge for many researchers. Although the security schemes for networked control systems have advanced in the past several years, there have been many acknowledged cyber attacks. As a result, this dissertation proposes the use of a novel time-delay switch (TDS) attack by introducing time delays into the dynamics of NCSs. Such an attack has devastating effects on NCSs if prevention techniques and countermeasures are not considered in the design of these systems. To overcome the stability issue caused by TDS attacks, this dissertation proposes a new detector to track TDS attacks in real time. This method relies on an estimator that will estimate and track time delays introduced by a hacker. Once a detector obtains the maximum tolerable time delay of a plant’s optimal controller (for which the plant remains secure and stable), it issues an alarm signal and directs the system to its alarm state. In the alarm state, the plant operates under the control of an emergency controller that can be local or networked to the plant and remains in this stable mode until the networked control system state is restored.
In another effort, this dissertation evaluates different control methods to find out which one is more stable when under a TDS attack than others. Also, a novel, simple and effective controller is proposed to thwart TDS attacks on the sensing loop (SL). The modified controller controls the system under a TDS attack. Also, the time-delay estimator will track time delays introduced by a hacker using a modified model reference-based control with an indirect supervisor and a modified least mean square (LMS) minimization technique.
Furthermore, here, the demonstration proves that the cryptographic solutions are ineffective in the recovery from TDS attacks. A cryptography-free TDS recovery (CF-TDSR) communication protocol enhancement is introduced to leverage the adaptive channel redundancy techniques, along with a novel state estimator to detect and assist in the recovery of the destabilizing effects of TDS attacks. The conclusion shows how the CF-TDSR ensures the control stability of linear time invariant systems.
Advisors/Committee Members: Kang K. Yen, Armando Barreto, Arif I. Sarwat, Bogdan Carbunar, Abolfazl Mehbodniya.
Subjects/Keywords: Time-Delay Switch Attack; Security of Networked Control Systems; Robust Control; Adaptive Communication Channel; Intrusion Detection; Controls and Control Theory; Power and Energy; Systems and Communications
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APA (6th Edition):
Sargolzaei, A. (2015). Time-Delay Switch Attack on Networked Control Systems, Effects and Countermeasures. (Doctoral Dissertation). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/2175 ; 10.25148/etd.FIDC000126 ; FIDC000126
Chicago Manual of Style (16th Edition):
Sargolzaei, Arman. “Time-Delay Switch Attack on Networked Control Systems, Effects and Countermeasures.” 2015. Doctoral Dissertation, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/2175 ; 10.25148/etd.FIDC000126 ; FIDC000126.
MLA Handbook (7th Edition):
Sargolzaei, Arman. “Time-Delay Switch Attack on Networked Control Systems, Effects and Countermeasures.” 2015. Web. 17 Jan 2021.
Vancouver:
Sargolzaei A. Time-Delay Switch Attack on Networked Control Systems, Effects and Countermeasures. [Internet] [Doctoral dissertation]. Florida International University; 2015. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/2175 ; 10.25148/etd.FIDC000126 ; FIDC000126.
Council of Science Editors:
Sargolzaei A. Time-Delay Switch Attack on Networked Control Systems, Effects and Countermeasures. [Doctoral Dissertation]. Florida International University; 2015. Available from: https://digitalcommons.fiu.edu/etd/2175 ; 10.25148/etd.FIDC000126 ; FIDC000126
11.
lin, weiwei.
Creation and Evaluation of Polymer/Multiwall Carbon Nanotube Films for Structural Vibration Control and Strain Sensing Properties.
Degree: PhD, Materials Science and Engineering, 2016, Florida International University
URL: https://digitalcommons.fiu.edu/etd/3025
;
10.25148/etd.FIDC001208
;
FIDC001208
► Multifunctional materials both with damping properties and strain sensing properties are very important. They promise to be more weight-efficient, and provide volume-efficient performance, flexibility…
(more)
▼ Multifunctional materials both with damping properties and strain sensing properties are very important. They promise to be more weight-efficient, and provide volume-efficient performance, flexibility and potentially, less maintenance than traditional multi-component brass-board systems.
The goal of this dissertation work was to design, synthesize, investigate and apply polyaniline/Multiwall carbon nanotube (PANI/MWCNT) and polyurethane (PU) /MWCNT composites films for structural vibration control and strain sensors using free layer damping methods and static and dynamic strain sensing test methods.
The PANI/MWCNT was made by in situ polymerization of PANI in the presence of MWCNT, then frit compression was used to make circular and rectangular PANI/MWCNT composite films. PU/MWCNT composites were made by the layer-by-layer method. Free end vibration test results showed both of PANI/MWCNT and PU/MWCNT have better damping ratios than each of their components. Static sensing test indicated that though there appears to be residual strain in both composite sensors after the load is removed, both the sensor and the foil strain gage react linearly when re-engaged. A drift test of the sensor showed that it is stable. The dynamic sensing test results showed that over the range of 10-1000 Hz, the PANI/MWCNT composite sensor was consistently superior to foil strain gage for sensing purposes since the highest peak consistently corresponded to the input frequency and was much higher, for example, at 20 Hz, 820 times higher than those of the strain gage. Using the same criterion, the PU/Buckypaper composite sensor was comparable to or superior to the foil strain gage for sensing purposes over the range of 10 Hz to 200 Hz.
The relationship of loss factor, η, and beam coverage length, L1/L, is discussed for single sided and double sided attachment. For both PANI/MWCNT and PU/MWCNT, the loss factor, η, was found to increase as coverage length, L1/L, increases. The loss factor, η, was found to have a maximum as with coverage length, L1/L, as the coverage length continues to increase. The trend for double sided attachment was found to follow the trends discussed by Rao (2004) and Levy and Chen (1994) for viscoelastic material constrained damping.
Advisors/Committee Members: Cesar Levy, Arvind Agarwal, Benjamin Boesl, Kang K. Yen, Xiaohua Li.
Subjects/Keywords: Polymer/Multiwall Carbon Nanotube; Polyaniline; Polyurethane; Damping properties; Strain Sensing properties.; Nanoscience and Nanotechnology; Other Materials Science and Engineering; Polymer and Organic Materials; Structural Materials
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APA (6th Edition):
lin, w. (2016). Creation and Evaluation of Polymer/Multiwall Carbon Nanotube Films for Structural Vibration Control and Strain Sensing Properties. (Doctoral Dissertation). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/3025 ; 10.25148/etd.FIDC001208 ; FIDC001208
Chicago Manual of Style (16th Edition):
lin, weiwei. “Creation and Evaluation of Polymer/Multiwall Carbon Nanotube Films for Structural Vibration Control and Strain Sensing Properties.” 2016. Doctoral Dissertation, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/3025 ; 10.25148/etd.FIDC001208 ; FIDC001208.
MLA Handbook (7th Edition):
lin, weiwei. “Creation and Evaluation of Polymer/Multiwall Carbon Nanotube Films for Structural Vibration Control and Strain Sensing Properties.” 2016. Web. 17 Jan 2021.
Vancouver:
lin w. Creation and Evaluation of Polymer/Multiwall Carbon Nanotube Films for Structural Vibration Control and Strain Sensing Properties. [Internet] [Doctoral dissertation]. Florida International University; 2016. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/3025 ; 10.25148/etd.FIDC001208 ; FIDC001208.
Council of Science Editors:
lin w. Creation and Evaluation of Polymer/Multiwall Carbon Nanotube Films for Structural Vibration Control and Strain Sensing Properties. [Doctoral Dissertation]. Florida International University; 2016. Available from: https://digitalcommons.fiu.edu/etd/3025 ; 10.25148/etd.FIDC001208 ; FIDC001208
12.
Hu, Hao.
Optimal and Miniaturized Strongly Coupled Magnetic Resonant Systems.
Degree: PhD, Electrical Engineering, 2016, Florida International University
URL: https://digitalcommons.fiu.edu/etd/3024
;
10.25148/etd.FIDC001209
;
FIDC001209
► Wireless power transfer (WPT) technologies for communication and recharging devices have recently attracted significant research attention. Conventional WPT systems based either on far-field or…
(more)
▼ Wireless power transfer (WPT) technologies for communication and recharging devices have recently attracted significant research attention. Conventional WPT systems based either on far-field or near-field coupling cannot provide simultaneously high efficiency and long transfer range. The Strongly Coupled Magnetic Resonance (SCMR) method was introduced recently, and it offers the possibility of transferring power with high efficiency over longer distances. Previous SCMR research has only focused on how to improve its efficiency and range through different methods. However, the study of optimal and miniaturized designs has been limited. In addition, no multiband and broadband SCMR WPT systems have been developed and traditional SCMR systems exhibit narrowband efficiency thereby imposing strict limitations on simultaneous wireless transmission of information and power, which is important for battery-less sensors. Therefore, new SCMR systems that are optimally designed and miniaturized in size will significantly enhance various technologies in many applications.
The optimal and miniaturized SCMR systems are studied here. First, analytical models of the Conformal SCMR (CSCMR) system and thorough analysis and design methodology have been presented. This analysis specifically leads to the identification of the optimal design parameters, and predicts the performance of the designed CSCMR system. Second, optimal multiband and broadband CSCMR systems are designed. Two-band, three-band, and four-band CSCMR systems are designed and validated using simulations and measurements. Novel broadband CSCMR systems are also analyzed, designed, simulated and measured. The proposed broadband CSCMR system achieved more than 7 times larger bandwidth compared to the traditional SCMR system at the same frequency. Miniaturization methods of SCMR systems are also explored. Specifically, methods that use printable CSCMR with large capacitors, novel topologies including meandered, SRRs, and spiral topologies or 3-D structures, lower the operating frequency of SCMR systems, thereby reducing their size. Finally, SCMR systems are discussed and designed for various applications, such as biomedical devices and simultaneous powering of multiple devices.
Advisors/Committee Members: Stavros V. Georgakopoulos, Kang K. Yen, Jean H. Andrian, Berrin Tansel, Manos M. Tentzeris.
Subjects/Keywords: Wireless power transfer; strongly coupled magnetic resonance; optimal; multiband; broadband; miniaturization; Electrical and Electronics; Electromagnetics and Photonics; Power and Energy
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APA ·
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MLA ·
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Export
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APA (6th Edition):
Hu, H. (2016). Optimal and Miniaturized Strongly Coupled Magnetic Resonant Systems. (Doctoral Dissertation). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/3024 ; 10.25148/etd.FIDC001209 ; FIDC001209
Chicago Manual of Style (16th Edition):
Hu, Hao. “Optimal and Miniaturized Strongly Coupled Magnetic Resonant Systems.” 2016. Doctoral Dissertation, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/3024 ; 10.25148/etd.FIDC001209 ; FIDC001209.
MLA Handbook (7th Edition):
Hu, Hao. “Optimal and Miniaturized Strongly Coupled Magnetic Resonant Systems.” 2016. Web. 17 Jan 2021.
Vancouver:
Hu H. Optimal and Miniaturized Strongly Coupled Magnetic Resonant Systems. [Internet] [Doctoral dissertation]. Florida International University; 2016. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/3024 ; 10.25148/etd.FIDC001209 ; FIDC001209.
Council of Science Editors:
Hu H. Optimal and Miniaturized Strongly Coupled Magnetic Resonant Systems. [Doctoral Dissertation]. Florida International University; 2016. Available from: https://digitalcommons.fiu.edu/etd/3024 ; 10.25148/etd.FIDC001209 ; FIDC001209
13.
Kamhoua, Charles A. K.
Modeling Security and Cooperation in Wireless Networks Using Game Theory.
Degree: Electrical Engineering, 2011, Florida International University
URL: https://digitalcommons.fiu.edu/etd/436
;
10.25148/etd.FI11072602
;
FI11072602
► This research involves the design, development, and theoretical demonstration of models resulting in integrated misbehavior resolution protocols for ad hoc networked devices. Game theory…
(more)
▼ This research involves the design, development, and theoretical demonstration of models resulting in integrated misbehavior resolution protocols for ad hoc networked devices. Game theory was used to analyze strategic interaction among independent devices with conflicting interests. Packet forwarding at the routing layer of autonomous ad hoc networks was investigated. Unlike existing reputation based or payment schemes, this model is based on repeated interactions. To enforce cooperation, a community enforcement mechanism was used, whereby selfish nodes that drop packets were punished not only by the victim, but also by all nodes in the network. Then, a stochastic packet forwarding game strategy was introduced. Our solution relaxed the uniform traffic demand that was pervasive in other works. To address the concerns of imperfect private monitoring in resource aware ad hoc networks, a belief-free equilibrium scheme was developed that reduces the impact of noise in cooperation. This scheme also eliminated the need to infer the private history of other nodes. Moreover, it simplified the computation of an optimal strategy. The belief-free approach reduced the node overhead and was easily tractable. Hence it made the system operation feasible. Motivated by the versatile nature of evolutionary game theory, the assumption of a rational node is relaxed, leading to the development of a framework for mitigating routing selfishness and misbehavior in Multi hop networks. This is accomplished by setting nodes to play a fixed strategy rather than independently choosing a rational strategy. A range of simulations was carried out that showed improved cooperation between selfish nodes when compared to older results. Cooperation among ad hoc nodes can also protect a network from malicious attacks. In the absence of a central trusted entity, many security mechanisms and privacy protections require cooperation among ad hoc nodes to protect a network from malicious attacks. Therefore, using game theory and evolutionary game theory, a mathematical framework has been developed that explores trust mechanisms to achieve security in the network. This framework is one of the first steps towards the synthesis of an integrated solution that demonstrates that security solely depends on the initial trust level that nodes have for each other.
Advisors/Committee Members: Niki Pissinou, Kia Makki, Norman D. H. Munroe, Kang K. Yen, Deng Pan.
Subjects/Keywords: Wireless network; Ad hoc network; Wireless sensor network; Telecommunication; Cooperation; Game theory; Evolutionary game theory; Network security; Trust; Prisoner's dilemma game
…GAME THEORY
by
Charles Alexandre Kenmogne Kamhoua
Florida International University, 2011…
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APA (6th Edition):
Kamhoua, C. A. K. (2011). Modeling Security and Cooperation in Wireless Networks Using Game Theory. (Thesis). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/436 ; 10.25148/etd.FI11072602 ; FI11072602
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Kamhoua, Charles A K. “Modeling Security and Cooperation in Wireless Networks Using Game Theory.” 2011. Thesis, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/436 ; 10.25148/etd.FI11072602 ; FI11072602.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Kamhoua, Charles A K. “Modeling Security and Cooperation in Wireless Networks Using Game Theory.” 2011. Web. 17 Jan 2021.
Vancouver:
Kamhoua CAK. Modeling Security and Cooperation in Wireless Networks Using Game Theory. [Internet] [Thesis]. Florida International University; 2011. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/436 ; 10.25148/etd.FI11072602 ; FI11072602.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Kamhoua CAK. Modeling Security and Cooperation in Wireless Networks Using Game Theory. [Thesis]. Florida International University; 2011. Available from: https://digitalcommons.fiu.edu/etd/436 ; 10.25148/etd.FI11072602 ; FI11072602
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
14.
Liu, Shuo.
Delay-Sensitive Service Request Scheduling for Cloud Computing.
Degree: PhD, Electrical Engineering, 2014, Florida International University
URL: https://digitalcommons.fiu.edu/etd/1619
;
10.25148/etd.FI14110731
;
FI14110731
► Cloud computing realizes the long-held dream of converting computing capability into a type of utility. It has the potential to fundamentally change the landscape…
(more)
▼ Cloud computing realizes the long-held dream of converting computing capability into a type of utility. It has the potential to fundamentally change the landscape of the IT industry and our way of life. However, as cloud computing expanding substantially in both scale and scope, ensuring its sustainable growth is a critical problem. Service providers have long been suffering from high operational costs. Especially the costs associated with the skyrocketing power consumption of large data centers. In the meantime, while efficient power/energy utilization is indispensable for the sustainable growth of cloud computing, service providers must also satisfy a user's quality of service (QoS) requirements. This problem becomes even more challenging considering the increasingly stringent power/energy and QoS constraints, as well as other factors such as the highly dynamic, heterogeneous, and distributed nature of the computing infrastructures, etc.
In this dissertation, we study the problem of delay-sensitive cloud service scheduling for the sustainable development of cloud computing. We first focus our research on the development of scheduling methods for delay-sensitive cloud services on a single server with the goal of maximizing a service provider's profit. We then extend our study to scheduling cloud services in distributed environments. In particular, we develop a queue-based model and derive efficient request dispatching and processing decisions in a multi-electricity-market environment to improve the profits for service providers. We next study a problem of multi-tier service scheduling. By carefully assigning sub deadlines to the service tiers, our approach can significantly improve resource usage efficiencies with statistically guaranteed QoS. Finally, we study the power conscious resource provision problem for service requests with different QoS requirements. By properly sharing computing resources among different requests, our method statistically guarantees all QoS requirements with a minimized number of powered-on servers and thus the power consumptions. The significance of our research is that it is one part of the integrated effort from both industry and academia to ensure the sustainable growth of cloud computing as it continues to evolve and change our society profoundly.
Advisors/Committee Members: Gang Quan, Kang K. Yen, Jean H. Andrian, Nezih Pala, Ming Zhao.
Subjects/Keywords: Cloud Computing; Quality of Service; Profit and Penalty; Power Minimization; Sub Deadlines; Electrical and Computer Engineering
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APA (6th Edition):
Liu, S. (2014). Delay-Sensitive Service Request Scheduling for Cloud Computing. (Doctoral Dissertation). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/1619 ; 10.25148/etd.FI14110731 ; FI14110731
Chicago Manual of Style (16th Edition):
Liu, Shuo. “Delay-Sensitive Service Request Scheduling for Cloud Computing.” 2014. Doctoral Dissertation, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/1619 ; 10.25148/etd.FI14110731 ; FI14110731.
MLA Handbook (7th Edition):
Liu, Shuo. “Delay-Sensitive Service Request Scheduling for Cloud Computing.” 2014. Web. 17 Jan 2021.
Vancouver:
Liu S. Delay-Sensitive Service Request Scheduling for Cloud Computing. [Internet] [Doctoral dissertation]. Florida International University; 2014. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/1619 ; 10.25148/etd.FI14110731 ; FI14110731.
Council of Science Editors:
Liu S. Delay-Sensitive Service Request Scheduling for Cloud Computing. [Doctoral Dissertation]. Florida International University; 2014. Available from: https://digitalcommons.fiu.edu/etd/1619 ; 10.25148/etd.FI14110731 ; FI14110731
15.
WANG, TIANYI.
On the Design of Real-Time Systems on Multi-Core Platforms under Uncertainty.
Degree: PhD, Electrical Engineering, 2015, Florida International University
URL: https://digitalcommons.fiu.edu/etd/2219
;
10.25148/etd.FIDC000080
;
FIDC000080
► Real-time systems are computing systems that demand the assurance of not only the logical correctness of computational results but also the timing of these…
(more)
▼ Real-time systems are computing systems that demand the assurance of not only the logical correctness of computational results but also the timing of these results. To ensure timing constraints, traditional real-time system designs usually adopt a worst-case based deterministic approach. However, such an approach is becoming out of sync with the continuous evolution of IC technology and increased complexity of real-time applications. As IC technology continues to evolve into the deep sub-micron domain, process variation causes processor performance to vary from die to die, chip to chip, and even core to core. The extensive resource sharing on multi-core platforms also significantly increases the uncertainty when executing real-time tasks. The traditional approach can only lead to extremely pessimistic, and thus, unpractical design of real-time systems.
Our research seeks to address the uncertainty problem when designing real-time systems on multi-core platforms. We first attacked the uncertainty problem caused by process variation. We proposed a virtualization framework and developed techniques to optimize the system's performance under process variation. We further studied the problem on peak temperature minimization for real-time applications on multi-core platforms. Three heuristics were developed to reduce the peak temperature for real-time systems. Next, we sought to address the uncertainty problem in real-time task execution times by developing statistical real-time scheduling techniques. We studied the problem of fixed-priority real-time scheduling of implicit periodic tasks with probabilistic execution times on multi-core platforms. We further extended our research for tasks with explicit deadlines. We introduced the concept of harmonic to a more general task set, i.e. tasks with explicit deadlines, and developed new task partitioning techniques. Throughout our research, we have conducted extensive simulations to study the effectiveness and efficiency of our developed techniques.
The increasing process variation and the ever-increasing scale and complexity of real-time systems both demand a paradigm shift in the design of real-time applications. Effectively dealing with the uncertainty in design of real-time applications is a challenging but also critical problem. Our research is such an effort in this endeavor, and we conclude this dissertation with discussions of potential future work.
Advisors/Committee Members: Gang Quan, Kang K. Yen, Jean H. Andrain, Nezih Pala, Deng Pan.
Subjects/Keywords: Real-Time Systems; Multi-Core; Uncertainty; Computer and Systems Architecture; Computer Engineering; Electrical and Computer Engineering
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APA (6th Edition):
WANG, T. (2015). On the Design of Real-Time Systems on Multi-Core Platforms under Uncertainty. (Doctoral Dissertation). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/2219 ; 10.25148/etd.FIDC000080 ; FIDC000080
Chicago Manual of Style (16th Edition):
WANG, TIANYI. “On the Design of Real-Time Systems on Multi-Core Platforms under Uncertainty.” 2015. Doctoral Dissertation, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/2219 ; 10.25148/etd.FIDC000080 ; FIDC000080.
MLA Handbook (7th Edition):
WANG, TIANYI. “On the Design of Real-Time Systems on Multi-Core Platforms under Uncertainty.” 2015. Web. 17 Jan 2021.
Vancouver:
WANG T. On the Design of Real-Time Systems on Multi-Core Platforms under Uncertainty. [Internet] [Doctoral dissertation]. Florida International University; 2015. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/2219 ; 10.25148/etd.FIDC000080 ; FIDC000080.
Council of Science Editors:
WANG T. On the Design of Real-Time Systems on Multi-Core Platforms under Uncertainty. [Doctoral Dissertation]. Florida International University; 2015. Available from: https://digitalcommons.fiu.edu/etd/2219 ; 10.25148/etd.FIDC000080 ; FIDC000080
16.
Vasudeva, Karthik.
Mobility Analysis and Management for Heterogeneous Networks.
Degree: PhD, Electrical Engineering, 2017, Florida International University
URL: https://digitalcommons.fiu.edu/etd/3348
;
10.25148/etd.FIDC001983
;
FIDC001983
► The global mobile data traffic has increased tremendously in the last decade due to the technological advancement in smartphones. Their endless usage and bandwidth-intensive…
(more)
▼ The global mobile data traffic has increased tremendously in the last decade due to the technological advancement in smartphones. Their endless usage and bandwidth-intensive applications will saturate current 4G technologies and has motivated the need for concrete research in order to sustain the mounting data traffic demand. In this regard, the network densification has shown to be a promising direction to cope with the capacity demands in future 5G wireless networks. The basic idea is to deploy several low power radio access nodes called small cells closer to the users on the existing large radio foot print of macrocells, and this constitutes a heterogeneous network (HetNet).
However, there are many challenges that operators face with the dense HetNet deployment. The mobility management becomes a challenging task due to triggering of frequent handovers when a user moves across the network coverage areas. When there are fewer users associated in certain small cells, this can lead to significant increase in the energy consumption. Intelligently switching them to low energy consumption modes or turning them off without seriously degrading user performance is desirable in order to improve the energy savings in HetNets. This dynamic power level switching in the small cells, however, may cause unnecessary handovers, and it becomes important to ensure energy savings without compromising handover performance. Finally, it is important to evaluate mobility management schemes in real network deployments, in order to find any problems affecting the quality of service (QoS) of the users. The research presented in this dissertation aims to address these challenges.
First, to tackle the mobility management issue, we develop a closed form, analytical model to study the handover and ping-pong performance as a function of network parameters in the small cells, and verify its performance using simulations. Secondly, we incorporate fuzzy logic based game-theoretic framework to address and examine the energy efficiency improvements in HetNets. In addition, we design fuzzy inference rules for handover decisions and target base station selection is performed through a fuzzy ranking technique in order to enhance the mobility robustness, while also considering energy/spectral efficiency. Finally, we evaluate the mobility performance by carrying out drive test in an existing 4G long term evolution (LTE) network deployment using software defined radios (SDR). This helps to obtain network quality information in order to find any problems affecting the QoS of the users.
Advisors/Committee Members: Ismail Guvenc, Jean H. Andrian, Kang K. Yen, Deng Pan, David Lopez-Perez.
Subjects/Keywords: Systems and Communications
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APA (6th Edition):
Vasudeva, K. (2017). Mobility Analysis and Management for Heterogeneous Networks. (Doctoral Dissertation). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/3348 ; 10.25148/etd.FIDC001983 ; FIDC001983
Chicago Manual of Style (16th Edition):
Vasudeva, Karthik. “Mobility Analysis and Management for Heterogeneous Networks.” 2017. Doctoral Dissertation, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/3348 ; 10.25148/etd.FIDC001983 ; FIDC001983.
MLA Handbook (7th Edition):
Vasudeva, Karthik. “Mobility Analysis and Management for Heterogeneous Networks.” 2017. Web. 17 Jan 2021.
Vancouver:
Vasudeva K. Mobility Analysis and Management for Heterogeneous Networks. [Internet] [Doctoral dissertation]. Florida International University; 2017. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/3348 ; 10.25148/etd.FIDC001983 ; FIDC001983.
Council of Science Editors:
Vasudeva K. Mobility Analysis and Management for Heterogeneous Networks. [Doctoral Dissertation]. Florida International University; 2017. Available from: https://digitalcommons.fiu.edu/etd/3348 ; 10.25148/etd.FIDC001983 ; FIDC001983
Florida International University
17.
Biswas, Sanjeet Kumar.
Analysis and comparison of network performance with different network parameters.
Degree: MS, Electrical Engineering, 1999, Florida International University
URL: https://digitalcommons.fiu.edu/etd/1703
;
10.25148/etd.FI14051159
;
FI14051159
► The purpose of this study was to analyze the network performance by observing the effect of varying network size and data link rate on…
(more)
▼ The purpose of this study was to analyze the network performance by observing the effect of varying network size and data link rate on one of the most commonly found network configurations. Computer networks have been growing explosively. Networking is used in every aspect of business, including advertising, production, shipping, planning, billing, and accounting. Communication takes place through networks that form the basis of transfer of information. The number and type of components may vary from network to network depending on several factors such as requirement and actual physical placement of the networks. There is no fixed size of the networks and they can be very small consisting of say five to six nodes or very large consisting of over two thousand nodes. The varying network sizes make it very important to study the network performance so as to be able to predict the functioning and the suitability of the network. The findings demonstrated that the network performance parameters such as global delay, load, router processor utilization, router processor delay, etc. are affected.
The findings demonstrated that the network performance parameters such as global delay, load, router processor utilization, router processor delay, etc. are affected significantly due to the increase in the size of the network and that there exists a correlation between the various parameters and the size of the network. These variations are not only dependent on the magnitude of the change in the actual physical area of the network but also on the data link rate used to connect the various components of the network.
Advisors/Committee Members: Kang K. Yen, Malcolm Heimer, Jean Andrian.
Subjects/Keywords: Electrical and Computer Engineering
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APA (6th Edition):
Biswas, S. K. (1999). Analysis and comparison of network performance with different network parameters. (Thesis). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/1703 ; 10.25148/etd.FI14051159 ; FI14051159
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Biswas, Sanjeet Kumar. “Analysis and comparison of network performance with different network parameters.” 1999. Thesis, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/1703 ; 10.25148/etd.FI14051159 ; FI14051159.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Biswas, Sanjeet Kumar. “Analysis and comparison of network performance with different network parameters.” 1999. Web. 17 Jan 2021.
Vancouver:
Biswas SK. Analysis and comparison of network performance with different network parameters. [Internet] [Thesis]. Florida International University; 1999. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/1703 ; 10.25148/etd.FI14051159 ; FI14051159.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Biswas SK. Analysis and comparison of network performance with different network parameters. [Thesis]. Florida International University; 1999. Available from: https://digitalcommons.fiu.edu/etd/1703 ; 10.25148/etd.FI14051159 ; FI14051159
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Florida International University
18.
Ghoshray, Sabyasachi.
Robot obstacle avoidance by geometric modeling techniques.
Degree: MS, Electrical Engineering, 1995, Florida International University
URL: https://digitalcommons.fiu.edu/etd/3988
;
FI15101572
► Avoiding collisions is the primary objective for a robot moving in a workspace with obstacles. The conventional obstacle avoidance algorithms suffer from the drawbacks…
(more)
▼ Avoiding collisions is the primary objective for a robot moving in a workspace with obstacles. The conventional obstacle avoidance algorithms suffer from the drawbacks due to considerable approximations and lack of flexibility. The proposed obstacle avoidance algorithms are developed based
upon the geometric modeling of robot workspace using quadtree data structure. Quadtree is a hierarchical decomposition method in which the region is recursively divided into four contiguous squares. A quadtree is generated from the polygonal representation of the obstacles in the workspace, called the obstacle-quadtree. By examining the obstacle-quadtree, nodes that can allow safe passage for the mobile robot are identified. By connecting all such nodes, a set of collision-free paths e generated and subsequently the optimal path is chosen. The advantages of the proposed algorithms include: (a) a quick computation of the shortest path for the mobile robot, (b) flexibility to merge different parts of the robot environment to investigate different navigation strategies, (c) modeling of multiple robots in the same quadtree, and (d) ability to vary the required accuracy of collision detection by changing the resolution of hierarchical decomposition of workspace.
Advisors/Committee Members: Kang K. Yen, Jean Andrian, Gustavo Roig.
Subjects/Keywords: Electrical and Computer Engineering
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APA (6th Edition):
Ghoshray, S. (1995). Robot obstacle avoidance by geometric modeling techniques. (Thesis). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/3988 ; FI15101572
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Ghoshray, Sabyasachi. “Robot obstacle avoidance by geometric modeling techniques.” 1995. Thesis, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/3988 ; FI15101572.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Ghoshray, Sabyasachi. “Robot obstacle avoidance by geometric modeling techniques.” 1995. Web. 17 Jan 2021.
Vancouver:
Ghoshray S. Robot obstacle avoidance by geometric modeling techniques. [Internet] [Thesis]. Florida International University; 1995. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/3988 ; FI15101572.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Ghoshray S. Robot obstacle avoidance by geometric modeling techniques. [Thesis]. Florida International University; 1995. Available from: https://digitalcommons.fiu.edu/etd/3988 ; FI15101572
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Florida International University
19.
Chen, Xiangqian.
Defense Against Node Compromise in Sensor Network Security.
Degree: Electrical Engineering, 2007, Florida International University
URL: https://digitalcommons.fiu.edu/etd/7
;
10.25148/etd.FI08081508
;
FI08081508
► Recent advances in electronic and computer technologies lead to wide-spread deployment of wireless sensor networks (WSNs). WSNs have wide range applications, including military sensing…
(more)
▼ Recent advances in electronic and computer technologies lead to wide-spread deployment of wireless sensor networks (WSNs). WSNs have wide range applications, including military sensing and tracking, environment monitoring, smart environments, etc. Many WSNs have mission-critical tasks, such as military applications. Thus, the security issues in WSNs are kept in the foreground among research areas. Compared with other wireless networks, such as ad hoc, and cellular networks, security in WSNs is more complicated due to the constrained capabilities of sensor nodes and the properties of the deployment, such as large scale, hostile environment, etc. Security issues mainly come from attacks. In general, the attacks in WSNs can be classified as external attacks and internal attacks. In an external attack, the attacking node is not an authorized participant of the sensor network. Cryptography and other security methods can prevent some of external attacks. However, node compromise, the major and unique problem that leads to internal attacks, will eliminate all the efforts to prevent attacks. Knowing the probability of node compromise will help systems to detect and defend against it. Although there are some approaches that can be used to detect and defend against node compromise, few of them have the ability to estimate the probability of node compromise. Hence, we develop basic uniform, basic gradient, intelligent uniform and intelligent gradient models for node compromise distribution in order to adapt to different application environments by using probability theory. These models allow systems to estimate the probability of node compromise. Applying these models in system security designs can improve system security and decrease the overheads nearly in every security area. Moreover, based on these models, we design a novel secure routing algorithm to defend against the routing security issue that comes from the nodes that have already been compromised but have not been detected by the node compromise detecting mechanism. The routing paths in our algorithm detour those nodes which have already been detected as compromised nodes or have larger probabilities of being compromised. Simulation results show that our algorithm is effective to protect routing paths from node compromise whether detected or not.
Advisors/Committee Members: Kia Makki, Kang K. Yen, Niki Pissinou, Shih-Ming Lee.
Subjects/Keywords: sensor networks; security; node compromise; secure routing; key management; attack
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APA (6th Edition):
Chen, X. (2007). Defense Against Node Compromise in Sensor Network Security. (Thesis). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/7 ; 10.25148/etd.FI08081508 ; FI08081508
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Chen, Xiangqian. “Defense Against Node Compromise in Sensor Network Security.” 2007. Thesis, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/7 ; 10.25148/etd.FI08081508 ; FI08081508.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chen, Xiangqian. “Defense Against Node Compromise in Sensor Network Security.” 2007. Web. 17 Jan 2021.
Vancouver:
Chen X. Defense Against Node Compromise in Sensor Network Security. [Internet] [Thesis]. Florida International University; 2007. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/7 ; 10.25148/etd.FI08081508 ; FI08081508.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chen X. Defense Against Node Compromise in Sensor Network Security. [Thesis]. Florida International University; 2007. Available from: https://digitalcommons.fiu.edu/etd/7 ; 10.25148/etd.FI08081508 ; FI08081508
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Florida International University
20.
Walpola, Malaka J.
Energy-Efficient Self-Organization of Wireless Acoustic Sensor Networks for Ground Target Tracking.
Degree: Electrical Engineering, 2009, Florida International University
URL: https://digitalcommons.fiu.edu/etd/129
;
10.25148/etd.FI09120830
;
FI09120830
► With the developments in computing and communication technologies, wireless sensor networks have become popular in wide range of application areas such as health, military,…
(more)
▼ With the developments in computing and communication technologies, wireless sensor networks have become popular in wide range of application areas such as health, military, environment and habitant monitoring. Moreover, wireless acoustic sensor networks have been widely used for target tracking applications due to their passive nature, reliability and low cost. Traditionally, acoustic sensor arrays built in linear, circular or other regular shapes are used for tracking acoustic sources. The maintaining of relative geometry of the acoustic sensors in the array is vital for accurate target tracking, which greatly reduces the flexibility of the sensor network. To overcome this limitation, we propose using only a single acoustic sensor at each sensor node. This design greatly improves the flexibility of the sensor network and makes it possible to deploy the sensor network in remote or hostile regions through air-drop or other stealth approaches. Acoustic arrays are capable of performing the target localization or generating the bearing estimations on their own. However, with only a single acoustic sensor, the sensor nodes will not be able to generate such measurements. Thus, self-organization of sensor nodes into virtual arrays to perform the target localization is essential. We developed an energy-efficient and distributed self-organization algorithm for target tracking using wireless acoustic sensor networks. The major error sources of the localization process were studied, and an energy-aware node selection criterion was developed to minimize the target localization errors. Using this node selection criterion, the self-organization algorithm selects a near-optimal localization sensor group to minimize the target tracking errors. In addition, a message passing protocol was developed to implement the self-organization algorithm in a distributed manner. In order to achieve extended sensor network lifetime, energy conservation was incorporated into the self-organization algorithm by incorporating a sleep-wakeup management mechanism with a novel cross layer adaptive wakeup probability adjustment scheme. The simulation results confirm that the developed self-organization algorithm provides satisfactory target tracking performance. Moreover, the energy saving analysis confirms the effectiveness of the cross layer power management scheme in achieving extended sensor network lifetime without degrading the target tracking performance.
Advisors/Committee Members: Kang K. Yen, Jinsong Zhang, Hao Zhu, Chenzhong Li.
Subjects/Keywords: Self-organization; Sensor networks; Target tracking; Energy-efficient; Power conservation
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APA (6th Edition):
Walpola, M. J. (2009). Energy-Efficient Self-Organization of Wireless Acoustic Sensor Networks for Ground Target Tracking. (Thesis). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/129 ; 10.25148/etd.FI09120830 ; FI09120830
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Walpola, Malaka J. “Energy-Efficient Self-Organization of Wireless Acoustic Sensor Networks for Ground Target Tracking.” 2009. Thesis, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/129 ; 10.25148/etd.FI09120830 ; FI09120830.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Walpola, Malaka J. “Energy-Efficient Self-Organization of Wireless Acoustic Sensor Networks for Ground Target Tracking.” 2009. Web. 17 Jan 2021.
Vancouver:
Walpola MJ. Energy-Efficient Self-Organization of Wireless Acoustic Sensor Networks for Ground Target Tracking. [Internet] [Thesis]. Florida International University; 2009. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/129 ; 10.25148/etd.FI09120830 ; FI09120830.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Walpola MJ. Energy-Efficient Self-Organization of Wireless Acoustic Sensor Networks for Ground Target Tracking. [Thesis]. Florida International University; 2009. Available from: https://digitalcommons.fiu.edu/etd/129 ; 10.25148/etd.FI09120830 ; FI09120830
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Florida International University
21.
Fang, Yechang.
Realization of Differentiated Quality of Service for Wideband Code Division Multiple Access Core Network.
Degree: Electrical Engineering, 2010, Florida International University
URL: https://digitalcommons.fiu.edu/etd/244
;
10.25148/etd.FI10080417
;
FI10080417
► The development of 3G (the 3rd generation telecommunication) value-added services brings higher requirements of Quality of Service (QoS). Wideband Code Division Multiple Access (WCDMA)…
(more)
▼ The development of 3G (the 3rd generation telecommunication) value-added services brings higher requirements of Quality of Service (QoS). Wideband Code Division Multiple Access (WCDMA) is one of three 3G standards, and enhancement of QoS for WCDMA Core Network (CN) becomes more and more important for users and carriers. The dissertation focuses on enhancement of QoS for WCDMA CN. The purpose is to realize the DiffServ (Differentiated Services) model of QoS for WCDMA CN. Based on the parallelism characteristic of Network Processors (NPs), the NP programming model is classified as Pool of Threads (POTs) and Hyper Task Chaining (HTC). In this study, an integrated programming model that combines both of the two models was designed. This model has highly efficient and flexible features, and also solves the problems of sharing conflicts and packet ordering. We used this model as the programming model to realize DiffServ QoS for WCDMA CN. The realization mechanism of the DiffServ model mainly consists of buffer management, packet scheduling and packet classification algorithms based on NPs. First, we proposed an adaptive buffer management algorithm called Packet Adaptive Fair Dropping (PAFD), which takes into consideration of both fairness and throughput, and has smooth service curves. Then, an improved packet scheduling algorithm called Priority-based Weighted Fair Queuing (PWFQ) was introduced to ensure the fairness of packet scheduling and reduce queue time of data packets. At the same time, the delay and jitter are also maintained in a small range. Thirdly, a multi-dimensional packet classification algorithm called Classification Based on Network Processors (CBNPs) was designed. It effectively reduces the memory access and storage space, and provides less time and space complexity. Lastly, an integrated hardware and software system of the DiffServ model of QoS for WCDMA CN was proposed. It was implemented on the NP IXP2400. According to the corresponding experiment results, the proposed system significantly enhanced QoS for WCDMA CN. It extensively improves consistent response time, display distortion and sound image synchronization, and thus increases network efficiency and saves network resource.
Advisors/Committee Members: Kang K. Yen, Jean H. Andrian, Deng Pan, Yimin Zhu.
Subjects/Keywords: QoS; DiffServ; 3G; WCDMA; Core Network; Network Processor
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APA (6th Edition):
Fang, Y. (2010). Realization of Differentiated Quality of Service for Wideband Code Division Multiple Access Core Network. (Thesis). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/244 ; 10.25148/etd.FI10080417 ; FI10080417
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Fang, Yechang. “Realization of Differentiated Quality of Service for Wideband Code Division Multiple Access Core Network.” 2010. Thesis, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/244 ; 10.25148/etd.FI10080417 ; FI10080417.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Fang, Yechang. “Realization of Differentiated Quality of Service for Wideband Code Division Multiple Access Core Network.” 2010. Web. 17 Jan 2021.
Vancouver:
Fang Y. Realization of Differentiated Quality of Service for Wideband Code Division Multiple Access Core Network. [Internet] [Thesis]. Florida International University; 2010. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/244 ; 10.25148/etd.FI10080417 ; FI10080417.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Fang Y. Realization of Differentiated Quality of Service for Wideband Code Division Multiple Access Core Network. [Thesis]. Florida International University; 2010. Available from: https://digitalcommons.fiu.edu/etd/244 ; 10.25148/etd.FI10080417 ; FI10080417
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Florida International University
22.
Chou, Te-Shun.
Fuzzy special logic functions and applications.
Degree: MS, Electrical Engineering, 1992, Florida International University
URL: https://digitalcommons.fiu.edu/etd/2347
;
10.25148/etd.FI14060817
;
FI14060817
► In this thesis, four special logic functions (threshold functions, monotone increasing functions, monotone decreasing functions, and unate functions) are extended to more general functions…
(more)
▼ In this thesis, four special logic functions (threshold functions, monotone increasing functions, monotone decreasing functions, and unate functions) are extended to more general functions which allows the activities of these special functions to be a "fuzzy" rather than a "1-or-O" process. These special logic functions are called as fuzzy special logic functions and are based on the concepts and techniques developed in fuzzy logic and fuzzy languages. The algorithms of determining C(n), C
max(n) and generating the most dissimilar fuzzy special logic functions as well as important properties and results are investigated. Examples are given to illustrated these special logic functions. In addition, their applications – function representation, data compression, error correction, and monotone flash analog to digital converter, their relationships, and fuzzy classification are also presented. It is obviously shown that fuzzy logic theory can be used successfully on these four special logic functions in order to normalize the grade of membership function μ in the interval [0 1]. As a result, the techniques described in this thesis may be of use in the study of other special logic functions and much fertile field work is great worth researching and developing.
Advisors/Committee Members: Edward T. Lee, Kang K. Yen, Wunnava V. Subbarao.
Subjects/Keywords: Functions; Special; Fuzzy algorithms; Electrical and Computer Engineering; Engineering
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APA (6th Edition):
Chou, T. (1992). Fuzzy special logic functions and applications. (Thesis). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/2347 ; 10.25148/etd.FI14060817 ; FI14060817
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Chou, Te-Shun. “Fuzzy special logic functions and applications.” 1992. Thesis, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/2347 ; 10.25148/etd.FI14060817 ; FI14060817.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chou, Te-Shun. “Fuzzy special logic functions and applications.” 1992. Web. 17 Jan 2021.
Vancouver:
Chou T. Fuzzy special logic functions and applications. [Internet] [Thesis]. Florida International University; 1992. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/2347 ; 10.25148/etd.FI14060817 ; FI14060817.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chou T. Fuzzy special logic functions and applications. [Thesis]. Florida International University; 1992. Available from: https://digitalcommons.fiu.edu/etd/2347 ; 10.25148/etd.FI14060817 ; FI14060817
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Florida International University
23.
Gilbar, Thomas Christopher.
Fault tolerant and integrated token ring network.
Degree: MS, Computer Engineering, 1993, Florida International University
URL: https://digitalcommons.fiu.edu/etd/3935
;
10.25148/etd.FI15101581
;
FI15101581
► This thesis is a study of communication protocols (token ring, FDDI, and ISDN), microcontrollers (68HC 1EVB), and fault tolerance schemes. One of the major…
(more)
▼ This thesis is a study of communication protocols (token ring, FDDI, and ISDN), microcontrollers (68HC 1EVB), and fault tolerance schemes. One of the major weaknesses of the token ring network is that if a single station fails, the entire system fails. A scheme involving a combination of hardware and timer interrupts in the software has been designed and implemented which deals with this risk. Software and protocols have been designed and applied to the network to reduce the chance of bit faults in communications. ISDN frame format proved to be exceptional in its capacity to carry echoed data and a large variety of tokens which could be used by the stations to test the data. By its very nature, the token ring supplied another major fault detection device by allowing the data to be returned and tested at its source. The resulting network was successful.
Advisors/Committee Members: Wunnava V. Subbarao, John C. Comfort, Malcolm L. Heimer, Kang K. Yen.
Subjects/Keywords: Ring networks (Computer networks); Fault-tolerant computing; Computer Engineering
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APA (6th Edition):
Gilbar, T. C. (1993). Fault tolerant and integrated token ring network. (Thesis). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/3935 ; 10.25148/etd.FI15101581 ; FI15101581
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Gilbar, Thomas Christopher. “Fault tolerant and integrated token ring network.” 1993. Thesis, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/3935 ; 10.25148/etd.FI15101581 ; FI15101581.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Gilbar, Thomas Christopher. “Fault tolerant and integrated token ring network.” 1993. Web. 17 Jan 2021.
Vancouver:
Gilbar TC. Fault tolerant and integrated token ring network. [Internet] [Thesis]. Florida International University; 1993. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/3935 ; 10.25148/etd.FI15101581 ; FI15101581.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Gilbar TC. Fault tolerant and integrated token ring network. [Thesis]. Florida International University; 1993. Available from: https://digitalcommons.fiu.edu/etd/3935 ; 10.25148/etd.FI15101581 ; FI15101581
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Florida International University
24.
Zhao, Xiwei.
Foundational Forensic Techniques for Cellular and Ad Hoc Multi-hop Networks.
Degree: Accounting, 2008, Florida International University
URL: https://digitalcommons.fiu.edu/etd/23
;
10.25148/etd.FI08081554
;
FI08081554
► The Internet has become an integral part of our nation's critical socio-economic infrastructure. With its heightened use and growing complexity however, organizations are at…
(more)
▼ The Internet has become an integral part of our nation's critical socio-economic infrastructure. With its heightened use and growing complexity however, organizations are at greater risk of cyber crimes. To aid in the investigation of crimes committed on or via the Internet, a network forensics analysis tool pulls together needed digital evidence. It provides a platform for performing deep network analysis by capturing, recording and analyzing network events to find out the source of a security attack or other information security incidents. Existing network forensics work has been mostly focused on the Internet and fixed networks. But the exponential growth and use of wireless technologies, coupled with their unprecedented characteristics, necessitates the development of new network forensic analysis tools. This dissertation fostered the emergence of a new research field in cellular and ad-hoc network forensics. It was one of the first works to identify this problem and offer fundamental techniques and tools that laid the groundwork for future research. In particular, it introduced novel methods to record network incidents and report logged incidents. For recording incidents, location is considered essential to documenting network incidents. However, in network topology spaces, location cannot be measured due to absence of a 'distance metric'. Therefore, a novel solution was proposed to label locations of nodes within network topology spaces, and then to authenticate the identity of nodes in ad hoc environments. For reporting logged incidents, a novel technique based on Distributed Hash Tables (DHT) was adopted. Although the direct use of DHTs for reporting logged incidents would result in an uncontrollably recursive traffic, a new mechanism was introduced that overcome this recursive process. These logging and reporting techniques aided forensics over cellular and ad-hoc networks, which in turn increased their ability to track and trace attacks to their source. These techniques were a starting point for further research and development that would result in equipping future ad hoc networks with forensic components to complement existing security mechanisms.
Advisors/Committee Members: Niki Pissinou, Hao Zhu, Kang K. Yen, Kia Makki, Ronald Giachetti.
Subjects/Keywords: network security; network forensics; peer to peer; mobile ad hoc network
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APA (6th Edition):
Zhao, X. (2008). Foundational Forensic Techniques for Cellular and Ad Hoc Multi-hop Networks. (Thesis). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/23 ; 10.25148/etd.FI08081554 ; FI08081554
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Zhao, Xiwei. “Foundational Forensic Techniques for Cellular and Ad Hoc Multi-hop Networks.” 2008. Thesis, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/23 ; 10.25148/etd.FI08081554 ; FI08081554.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Zhao, Xiwei. “Foundational Forensic Techniques for Cellular and Ad Hoc Multi-hop Networks.” 2008. Web. 17 Jan 2021.
Vancouver:
Zhao X. Foundational Forensic Techniques for Cellular and Ad Hoc Multi-hop Networks. [Internet] [Thesis]. Florida International University; 2008. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/23 ; 10.25148/etd.FI08081554 ; FI08081554.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Zhao X. Foundational Forensic Techniques for Cellular and Ad Hoc Multi-hop Networks. [Thesis]. Florida International University; 2008. Available from: https://digitalcommons.fiu.edu/etd/23 ; 10.25148/etd.FI08081554 ; FI08081554
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Florida International University
25.
Luo, Jun.
Peak-to-Average Power Ratio Reduced Parallel Interference Cancellation Multicarrier-Code Division Multiple Access System with Anti-Interference Property.
Degree: Accounting, 2008, Florida International University
URL: https://digitalcommons.fiu.edu/etd/20
;
10.25148/etd.FI08121908
;
FI08121908
► Orthogonal Frequency-Division Multiplexing (OFDM) has been proved to be a promising technology that enables the transmission of higher data rate. Multicarrier Code-Division Multiple Access…
(more)
▼ Orthogonal Frequency-Division Multiplexing (OFDM) has been proved to be a promising technology that enables the transmission of higher data rate. Multicarrier Code-Division Multiple Access (MC-CDMA) is a transmission technique which combines the advantages of both OFDM and Code-Division Multiplexing Access (CDMA), so as to allow high transmission rates over severe time-dispersive multi-path channels without the need of a complex receiver implementation. Also MC-CDMA exploits frequency diversity via the different subcarriers, and therefore allows the high code rates systems to achieve good Bit Error Rate (BER) performances. Furthermore, the spreading in the frequency domain makes the time synchronization requirement much lower than traditional direct sequence CDMA schemes. There are still some problems when we use MC-CDMA. One is the high Peak-to-Average Power Ratio (PAPR) of the transmit signal. High PAPR leads to nonlinear distortion of the amplifier and results in inter-carrier self-interference plus out-of-band radiation. On the other hand, suppressing the Multiple Access Interference (MAI) is another crucial problem in the MC-CDMA system. Imperfect cross-correlation characteristics of the spreading codes and the multipath fading destroy the orthogonality among the users, and then cause MAI, which produces serious BER degradation in the system. Moreover, in uplink system the received signals at a base station are always asynchronous. This also destroys the orthogonality among the users, and hence, generates MAI which degrades the system performance. Besides those two problems, the interference should always be considered seriously for any communication system. In this dissertation, we design a novel MC-CDMA system, which has low PAPR and mitigated MAI. The new Semi-blind channel estimation and multi-user data detection based on Parallel Interference Cancellation (PIC) have been applied in the system. The Low Density Parity Codes (LDPC) has also been introduced into the system to improve the performance. Different interference models are analyzed in multi-carrier communication systems and then the effective interference suppression for MC-CDMA systems is employed in this dissertation. The experimental results indicate that our system not only significantly reduces the PAPR and MAI but also effectively suppresses the outside interference with low complexity. Finally, we present a practical cognitive application of the proposed system over the software defined radio platform.
Advisors/Committee Members: Jean H. Andrian, Hao Zhu, Kang K. Yen, Shih-Ming Lee.
Subjects/Keywords: OFDM; MC-CDMA; LDPC; PAPR; MAI
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APA ·
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Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Luo, J. (2008). Peak-to-Average Power Ratio Reduced Parallel Interference Cancellation Multicarrier-Code Division Multiple Access System with Anti-Interference Property. (Thesis). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/20 ; 10.25148/etd.FI08121908 ; FI08121908
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Luo, Jun. “Peak-to-Average Power Ratio Reduced Parallel Interference Cancellation Multicarrier-Code Division Multiple Access System with Anti-Interference Property.” 2008. Thesis, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/20 ; 10.25148/etd.FI08121908 ; FI08121908.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Luo, Jun. “Peak-to-Average Power Ratio Reduced Parallel Interference Cancellation Multicarrier-Code Division Multiple Access System with Anti-Interference Property.” 2008. Web. 17 Jan 2021.
Vancouver:
Luo J. Peak-to-Average Power Ratio Reduced Parallel Interference Cancellation Multicarrier-Code Division Multiple Access System with Anti-Interference Property. [Internet] [Thesis]. Florida International University; 2008. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/20 ; 10.25148/etd.FI08121908 ; FI08121908.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Luo J. Peak-to-Average Power Ratio Reduced Parallel Interference Cancellation Multicarrier-Code Division Multiple Access System with Anti-Interference Property. [Thesis]. Florida International University; 2008. Available from: https://digitalcommons.fiu.edu/etd/20 ; 10.25148/etd.FI08121908 ; FI08121908
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Florida International University
26.
Chou, Te-Shun.
Ensemble Fuzzy Belief Intrusion Detection Design.
Degree: Electrical Engineering, 2007, Florida International University
URL: https://digitalcommons.fiu.edu/etd/6
;
10.25148/etd.FI08081509
;
FI08081509
► With the rapid growth of the Internet, computer attacks are increasing at a fast pace and can easily cause millions of dollar in damage…
(more)
▼ With the rapid growth of the Internet, computer attacks are increasing at a fast pace and can easily cause millions of dollar in damage to an organization. Detecting these attacks is an important issue of computer security. There are many types of attacks and they fall into four main categories, Denial of Service (DoS) attacks, Probe, User to Root (U2R) attacks, and Remote to Local (R2L) attacks. Within these categories, DoS and Probe attacks continuously show up with greater frequency in a short period of time when they attack systems. They are different from the normal traffic data and can be easily separated from normal activities. On the contrary, U2R and R2L attacks are embedded in the data portions of the packets and normally involve only a single connection. It becomes difficult to achieve satisfactory detection accuracy for detecting these two attacks. Therefore, we focus on studying the ambiguity problem between normal activities and U2R/R2L attacks. The goal is to build a detection system that can accurately and quickly detect these two attacks. In this dissertation, we design a two-phase intrusion detection approach. In the first phase, a correlation-based feature selection algorithm is proposed to advance the speed of detection. Features with poor prediction ability for the signatures of attacks and features inter-correlated with one or more other features are considered redundant. Such features are removed and only indispensable information about the original feature space remains. In the second phase, we develop an ensemble intrusion detection system to achieve accurate detection performance. The proposed method includes multiple feature selecting intrusion detectors and a data mining intrusion detector. The former ones consist of a set of detectors, and each of them uses a fuzzy clustering technique and belief theory to solve the ambiguity problem. The latter one applies data mining technique to automatically extract computer users’ normal behavior from training network traffic data. The final decision is a combination of the outputs of feature selecting and data mining detectors. The experimental results indicate that our ensemble approach not only significantly reduces the detection time but also effectively detect U2R and R2L attacks that contain degrees of ambiguous information.
Advisors/Committee Members: Kang K. Yen, Jean Andrian, Kia Makki, Niki Pissinou, Yimin Zhu.
Subjects/Keywords: belief theory; fuzzy logic; intrusion detection
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APA ·
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Export
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APA (6th Edition):
Chou, T. (2007). Ensemble Fuzzy Belief Intrusion Detection Design. (Thesis). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/6 ; 10.25148/etd.FI08081509 ; FI08081509
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Chou, Te-Shun. “Ensemble Fuzzy Belief Intrusion Detection Design.” 2007. Thesis, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/6 ; 10.25148/etd.FI08081509 ; FI08081509.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chou, Te-Shun. “Ensemble Fuzzy Belief Intrusion Detection Design.” 2007. Web. 17 Jan 2021.
Vancouver:
Chou T. Ensemble Fuzzy Belief Intrusion Detection Design. [Internet] [Thesis]. Florida International University; 2007. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/6 ; 10.25148/etd.FI08081509 ; FI08081509.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chou T. Ensemble Fuzzy Belief Intrusion Detection Design. [Thesis]. Florida International University; 2007. Available from: https://digitalcommons.fiu.edu/etd/6 ; 10.25148/etd.FI08081509 ; FI08081509
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Florida International University
27.
Gutman, Alejandro A.
Autocalibration of photomultiplier tubes in a luminometer instrument.
Degree: MS, Electrical Engineering, 1992, Florida International University
URL: https://digitalcommons.fiu.edu/etd/3978
;
FI15101763
► Photon emission of biologically active samples by injection of bioluminescent enzymes are detected by photomultiplier tubes in a luminometer instrument. These photomultiplier tubes are…
(more)
▼ Photon emission of biologically active samples by injection of bioluminescent enzymes are detected by photomultiplier tubes in a luminometer instrument. These photomultiplier tubes are very sensitive to small amount of light and this sensitivity depends, among other factors, on the high voltage applied to the tubes.
This thesis describes a new procedure to automatically calibrate the photomultiplier tubes in the above instrument, discusses the instrument’s design, its implementation, and presents the tests’ results obtained with the actual instrument.
Advisors/Committee Members: Malcolm L. Heimer, James R. Story, Kang K Yen, Wunnava V. Subbarao.
Subjects/Keywords: Electrical and Computer Engineering
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APA ·
Chicago ·
MLA ·
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CSE |
Export
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Manager
APA (6th Edition):
Gutman, A. A. (1992). Autocalibration of photomultiplier tubes in a luminometer instrument. (Thesis). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/3978 ; FI15101763
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Gutman, Alejandro A. “Autocalibration of photomultiplier tubes in a luminometer instrument.” 1992. Thesis, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/3978 ; FI15101763.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Gutman, Alejandro A. “Autocalibration of photomultiplier tubes in a luminometer instrument.” 1992. Web. 17 Jan 2021.
Vancouver:
Gutman AA. Autocalibration of photomultiplier tubes in a luminometer instrument. [Internet] [Thesis]. Florida International University; 1992. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/3978 ; FI15101763.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Gutman AA. Autocalibration of photomultiplier tubes in a luminometer instrument. [Thesis]. Florida International University; 1992. Available from: https://digitalcommons.fiu.edu/etd/3978 ; FI15101763
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Florida International University
28.
El Moutia, Abdallah.
Space division multiple access for wireless sensor networks.
Degree: PhD, Electrical Engineering, 2007, Florida International University
URL: https://digitalcommons.fiu.edu/etd/3125
;
10.25148/etd.FI15101279
;
FI15101279
► This dissertation proposed a self-organizing medium access control protocol (MAC) for wireless sensor networks (WSNs). The proposed MAC protocol, space division multiple access (SDMA),…
(more)
▼ This dissertation proposed a self-organizing medium access control protocol (MAC) for wireless sensor networks (WSNs). The proposed MAC protocol, space division multiple access (SDMA), relies on sensor node position information and provides sensor nodes access to the wireless channel based on their spatial locations. SDMA divides a geographical area into space divisions, where there is one-to-one map between the space divisions and the time slots. Therefore, the MAC protocol requirement is the sensor node information of its position and a prior knowledge of the one-to-one mapping function. The scheme is scalable, self-maintaining, and self-starting. It provides collision-free access to the wireless channel for the sensor nodes thereby, guarantees delay-bounded communication in real time for delay sensitive applications. This work was divided into two parts: the first part involved the design of the mapping function to map the space divisions to the time slots. The mapping function is based on a uniform Latin square. A Uniform Latin square of order
k = m
2 is an
k x
k square matrix that consists of
k symbols from 0 to
k-I such that no symbol appears more than once in any row, in any column, or in any m x m area of main subsquares. The uniqueness of each symbol in the main subsquares presents very attractive characteristic in applying a uniform Latin square to time slot allocation problem in WSNs. The second part of this research involved designing a GPS free positioning system for position information. The system is called time and power based localization scheme (TPLS). TPLS is based on time difference of arrival (TDoA) and received signal strength (RSS) using radio frequency and ultrasonic signals to measure and detect the range differences from a sensor node to three anchor nodes. TPLS requires low computation overhead and no time synchronization, as the location estimation algorithm involved only a simple algebraic operation.
Advisors/Committee Members: Kia Makki, Hao Zhu, Shih-Ming Lee, Kang K. Yen, Niki Pissinou.
Subjects/Keywords: Electrical and Computer Engineering
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Record Details
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
El Moutia, A. (2007). Space division multiple access for wireless sensor networks. (Doctoral Dissertation). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/3125 ; 10.25148/etd.FI15101279 ; FI15101279
Chicago Manual of Style (16th Edition):
El Moutia, Abdallah. “Space division multiple access for wireless sensor networks.” 2007. Doctoral Dissertation, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/3125 ; 10.25148/etd.FI15101279 ; FI15101279.
MLA Handbook (7th Edition):
El Moutia, Abdallah. “Space division multiple access for wireless sensor networks.” 2007. Web. 17 Jan 2021.
Vancouver:
El Moutia A. Space division multiple access for wireless sensor networks. [Internet] [Doctoral dissertation]. Florida International University; 2007. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/3125 ; 10.25148/etd.FI15101279 ; FI15101279.
Council of Science Editors:
El Moutia A. Space division multiple access for wireless sensor networks. [Doctoral Dissertation]. Florida International University; 2007. Available from: https://digitalcommons.fiu.edu/etd/3125 ; 10.25148/etd.FI15101279 ; FI15101279
. 
Open Access Theses and Dissertations
