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- Title
- Implementation of the IEEE 1609.2 WAVE Security Services Standard.
- Creator
- Mandy, Chad Christopher Jr., Mahgoub, Imad, Florida Atlantic University, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
- Abstract/Description
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This work presents the implementation of the the IEEE 1609.2 WAVE Security Services Standard. This implementation provides the ability to generate a message signature, along with the capability to verify that signature for wave short messages transmitted over an unsecured medium. Only the original sender of the message can sign it, allowing for the authentication of a message to be checked. As hashing is used during the generation and verification of signatures, message integrity can be...
Show moreThis work presents the implementation of the the IEEE 1609.2 WAVE Security Services Standard. This implementation provides the ability to generate a message signature, along with the capability to verify that signature for wave short messages transmitted over an unsecured medium. Only the original sender of the message can sign it, allowing for the authentication of a message to be checked. As hashing is used during the generation and verification of signatures, message integrity can be verified because a failed signature verification is a result of a compromised message. Also provided is the ability to encrypt and decrypt messages using AES-CCM to ensure that sensitive information remains safe and secure from unwanted recipients. Additionally this implementation provides a way for the 1609.2 specific data types to be encoded and decoded for ease of message transmittance. This implementation was built to support the Smart Drive initiative’s VANET testbed, supported by the National Science Foundation and is intended to run on the Vehicular Multi-technology Communication Device (VMCD) that is being developed. The VMCD runs on the embedded Linux operating system and this implementation will reside inside of the Linux kernel.
Show less - Date Issued
- 2016
- PURL
- http://purl.flvc.org/fau/fd/FA00004693, http://purl.flvc.org/fau/fd/FA00004693
- Subject Headings
- Application software -- Security measures, Expert systems (Computer science), Vehicular ad hoc networks (Computer networks), Wireless LANs, Wireless communication systems -- Security measures, Wireless sensor networks
- Format
- Document (PDF)
- Title
- Adaptive on-demand routing protocol for mobile ad hoc networks.
- Creator
- Omer, Ismail., Florida Atlantic University, Mahgoub, Imad, Ilyas, Mohammad, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
- Abstract/Description
-
Existing MANET routing protocols can be classified into three categories: On-demand, Proactive, and Proactive-On-demand hybrid protocols. This dissertation presents a novel hybrid MANET routing protocol, Adaptive On-demand MANET Routing (AOMAR) protocol. AOMAR borrowed the concepts of temporal location updates in operating systems and cache memories to reconstruct broken routes. Each route entry in a mobile host will have a reference field that is set to indicate whether the route is used...
Show moreExisting MANET routing protocols can be classified into three categories: On-demand, Proactive, and Proactive-On-demand hybrid protocols. This dissertation presents a novel hybrid MANET routing protocol, Adaptive On-demand MANET Routing (AOMAR) protocol. AOMAR borrowed the concepts of temporal location updates in operating systems and cache memories to reconstruct broken routes. Each route entry in a mobile host will have a reference field that is set to indicate whether the route is used within a certain period of time called refresh time. Using the refresh time parameter and the route reference field, AOMAR behavior can be controlled to behave as pure On-demand, Adaptive, or history related Proactive protocol. The three versions of AOMAR, On-demand, Adaptive and Proactive, have been simulated using different network sizes, loads and mobility patterns. Three performance metrics---throughput, delay and overhead---are collected. The results show that AOMAR on-demand has the same pattern of results when compared with other exiting on-demand protocols. On-demand AOMAR shows better performance when compared to Adaptive AOMAR for simulation sessions with uniform workloads. On the other hand Adaptive AOMAR outperforms On-demand AOMAR for simulation sessions with non-uniform workloads. Proactive AOMAR reconstructs recently used routes that have broken. Therefore, its routing overhead results change with the change of the network loads and mobility rates. This is not the case for traditional proactive protocols. Proactive AOMAR has lower control overhead and saves the bandwidth when compared with traditional existing proactive routing protocols. In addition to developing and simulating AOMAR, a new mobility model is proposed. Synchronized Random Direction Model of Motion with Constant Speed (SRDMCS) is a model that is suitable to emulate objects that move in random directions with a constant speed and within a certain area of movement. A new formula, Movement Related Update (MRU), is proposed and implemented. In MRU, the refresh period parameter value is linked to the network mobility level. Using MRU in the simulation gives AOMAR a third dimension such that the protocol not only adapts with how frequently the routes are used and how frequently they are broken, but also with how dynamic the network is.
Show less - Date Issued
- 2001
- PURL
- http://purl.flvc.org/fcla/dt/11972
- Subject Headings
- Mobile computing, Computer network protocols, Wireless communication systems
- Format
- Document (PDF)
- Title
- Real-time traffic incidents prediction in vehicular networks using big data analytics.
- Creator
- Al-Najada, Hamzah, Mahgoub, Imad, Florida Atlantic University, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
- Abstract/Description
-
The United States has been going through a road accident crisis for many years. The National Safety Council estimates 40,000 people were killed and 4.57 million injured on U.S. roads in 2017. Direct and indirect loss from tra c congestion only is more than $140 billion every year. Vehicular Ad-hoc Networks (VANETs) are envisioned as the future of Intelligent Transportation Systems (ITSs). They have a great potential to enable all kinds of applications that will enhance road safety and...
Show moreThe United States has been going through a road accident crisis for many years. The National Safety Council estimates 40,000 people were killed and 4.57 million injured on U.S. roads in 2017. Direct and indirect loss from tra c congestion only is more than $140 billion every year. Vehicular Ad-hoc Networks (VANETs) are envisioned as the future of Intelligent Transportation Systems (ITSs). They have a great potential to enable all kinds of applications that will enhance road safety and transportation efficiency. In this dissertation, we have aggregated seven years of real-life tra c and incidents data, obtained from the Florida Department of Transportation District 4. We have studied and investigated the causes of road incidents by applying machine learning approaches to this aggregated big dataset. A scalable, reliable, and automatic system for predicting road incidents is an integral part of any e ective ITS. For this purpose, we propose a cloud-based system for VANET that aims at preventing or at least decreasing tra c congestions as well as crashes in real-time. We have created, tested, and validated a VANET traffic dataset by applying the connected vehicle behavioral changes to our aggregated dataset. To achieve the scalability, speed, and fault-tolerance in our developed system, we built our system in a lambda architecture fashion using Apache Spark and Spark Streaming with Kafka. We used our system in creating optimal and safe trajectories for autonomous vehicles based on the user preferences. We extended the use of our developed system in predicting the clearance time on the highway in real-time, as an important component of the traffic incident management system. We implemented the time series analysis and forecasting in our real-time system as a component for predicting traffic flow. Our system can be applied to use dedicated short communication (DSRC), cellular, or hybrid communication schema to receive streaming data and send back the safety messages. The performance of the proposed system has been extensively tested on the FAUs High Performance Computing Cluster (HPCC), as well as on a single node virtual machine. Results and findings confirm the applicability of the proposed system in predicting traffic incidents with low processing latency.
Show less - Date Issued
- 2018
- PURL
- http://purl.flvc.org/fau/fd/FA00013114
- Subject Headings
- Vehicular ad hoc networks (Computer networks), Big data, Intelligent transportation systems, Prediction, traffic incidents
- Format
- Document (PDF)
- Title
- Analysis of a novel class of fault-tolerant multistage interconnection networks.
- Creator
- Huang, Chien-Jen, Florida Atlantic University, Mahgoub, Imad, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
- Abstract/Description
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Multistage interconnection networks (MINs) have become an important subset of the interconnection networks which are used to communicate between processors and memory modules for large scale multiprocessor systems. Unfortunately, unique path MINs lack fault tolerance. In this dissertation, a novel scheme for constructing fault-tolerant MINs is presented. We first partition the given MINs into even sized partitions and show some fault-tolerant properties of the partitioned MINs. Using three...
Show moreMultistage interconnection networks (MINs) have become an important subset of the interconnection networks which are used to communicate between processors and memory modules for large scale multiprocessor systems. Unfortunately, unique path MINs lack fault tolerance. In this dissertation, a novel scheme for constructing fault-tolerant MINs is presented. We first partition the given MINs into even sized partitions and show some fault-tolerant properties of the partitioned MINs. Using three stages of multiplexers/demultiplexers, an augmenting scheme which takes advantage of locality in program execution is then proposed to further improve the fault-tolerant ability and performance of the partitioned MINs. The topological characteristics of augmented partitioned multistage interconnection networks (APMINs) are analyzed. Based on switch fault model, simulations have been carried out to evaluate the full access and dynamic full access capabilities of APMINs. The results show that the proposed scheme significantly improves the fault-tolerant capability of MINs. Cost effectiveness of this new scheme in terms of cost, full access, dynamic full access, locality, and average path length has also been evaluated. It has been shown that this new scheme is more cost effective for high switch failure rate and/or large size networks. Analytical modeling techniques have been developed to evaluate the performance of AP-Omega network and AP-Omega network-based multiprocessor systems. The performance of Omega, modified Omega, and AP-Omega networks in terms of processor utilization and processor waiting time have been compared and the results show that the new scheme indeed, improves the performance both in network level and in system level. Finally, based on the reliability of serial/parallel network components, models for evaluating the terminal reliability and the network reliability of AP-Omega network using upper and lower bound measures have also been proposed and the results show that applying locality improve APMINs' reliability.
Show less - Date Issued
- 1993
- PURL
- http://purl.flvc.org/fcla/dt/12345
- Subject Headings
- Integratged circuits--Very large scale integration, Fault-tolerant computing, Computer architecture, Parallel processing (Electronic computers)
- Format
- Document (PDF)
- Title
- A body area network as a pre-screening surrogate to the polysomnography.
- Creator
- LaFleur, Sheryl, Mahgoub, Imad, Florida Atlantic University, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
- Abstract/Description
-
Out of 60 million Americans suffering from sleep disorder, an estimated 18 million have sleep apnea. According to the U.S. Department of Health & Human Services, sleep apnea is a chronic condition that disrupts a patient’s sleep. While the annual cost of treating sleep apnea patients in the United States is approximately $3.18 billion (including screening costs) it is estimated that untreated sleep apnea may cause $3.4 billion in additional medical costs. A polysomnography (PSG) is an all...
Show moreOut of 60 million Americans suffering from sleep disorder, an estimated 18 million have sleep apnea. According to the U.S. Department of Health & Human Services, sleep apnea is a chronic condition that disrupts a patient’s sleep. While the annual cost of treating sleep apnea patients in the United States is approximately $3.18 billion (including screening costs) it is estimated that untreated sleep apnea may cause $3.4 billion in additional medical costs. A polysomnography (PSG) is an all-night sleep study which monitors various physical functions during sleep including electrical activity of the heart, brain wave patterns, eye movement, muscle tone, body movements, and breathing. It is currently, the most accurate and sophisticated test for the diagnosis of sleep-disordered breathing (SDB), but also, the most expensive. The cost of an overnight sleep study is estimated between $900 and $3,000. In addition, the PSG is not mobile and has to be administered outside a patient’s home. The Long QT Syndrome (LQTS) is a rhythm disorder that causes erratic (unpredictable) heartbeats. The LQTS has been linked to patients with the most severe form of sleep apnea. If LQTS is left untreated, sudden cardiac death may occur.
Show less - Date Issued
- 2014
- PURL
- http://purl.flvc.org/fau/fd/FA00004300
- Subject Headings
- Neurophysiology, Nevous system -- Diseases -- Diagnosis, Polysomnography, Sleep -- Physiological aspects, Sleep apnea syndromes -- Diagnosis, Sleep disorders -- Diagnosis
- Format
- Document (PDF)
