Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 40 for “"Traffic models"”.
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Non-Equilibrium Dynamics of Second Order Traffic Models
Even though first order LWR models have many limitations, they are still widely used in many engineering applications. Second-order models, on the other hand, address many of those limitations. Among second-order models, the inhomogeneous Aw-Rascle-Zhang (ARZ) model is well-received as its …
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The Development of Regional Traffic Models for a Central City and Its Outlying Communities
Made available in DSpace on 2015-05-12T17:06:29Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6402888.PDF: 4624153 bytes, checksum: 86a02a9050a6d023c9f72fc91c4384a9 (MD5) Previous issue date: 1963
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Traffic models from a velocity point of view and implementation of traffic conditions in excess fuel consumption estimates
… we propose a coupling of mechanistic dissipative models with evaluation of velocity profiles which shall enable a higher accuracy in the prediction of excess fuel consumption. We focus our attention on the simulation of the probability density functions associated with the velocity of vehicles on …
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WAVELET-BASED NETWORK TRAFFIC MODELING
… growth. This phenomenal growth in terms of traffic volume, bandwidth requirements, network topologies and protocols, medium of communication, and network applications, is constantly changing the nature of network traffic, thus motivating the need for flexible and efficient mathematical …
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Denial-of-service attack modelling and detection for HTTP/2 services
… techniques, addresses only HTTP/1.x network traffic. This thesis presents a model of DoS attack traffic against servers employing the new communication protocol, namely HTTP/2. The HTTP/2 protocol significantly differs from its predecessor and introduces new messaging formats and data …
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Scheduling Non-Uniform Traffic in a Packet Switching System
Flexible non-uniform traffic models are important for the analysis of integrated data networks carrying diverse classes of data. In this thesis, a new model of non-uniform traffic is introduced for a single-hop packet switching system. This traffic model allows arbitrary traffic streams subject …
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Optimal and Feedback Control for Hyperbolic Conservation Laws
… equations for Conservation Laws motivated by traffic control problems. New traffic models for multi-directional flow in two dimensions are derived and their properties studied. Control models are proposed where the control variable is a multiplicative term in the flux function. Control models …
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Modelling computer network traffic using wavelets and time series analysis
Modelling of network traffic is a notoriously difficult problem. This is primarily due to the ever-increasing complexity of network traffic and the different ways in which a network may be excited by user activity. The ongoing development of new network applications, protocols, and usage profiles …
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Architecture design and performance analysis of practical buffered-crossbar packet switches
… and provide high throughput under admissible traffic. However, the amount of memory required in the crossbar of an N x N switch is N^2x k x L, where k is the crosspoint buffer size and needs to be of size RTT in cells, L is the packet size. RTT is the round-trip time which is defined by the …
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Continuum modeling of the deceleration transient state in stochastic traffic flow
Due to individual driver behavior, a traffic system is subject to many stochastic factors. Deterministic partial differential equations and their extensions, traditionally used in traffic flow modeling, may not be sufficient in applications such as real-time estimation and prediction of traffic …
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A Simulation-Based Approach to the Characterisation of Urban Traffic Network Vulnerability
… to obtain a better understanding of urban traffic network vulnerability. A methodological framework is presented, forming the basis for investigating critical dimensions affecting vulnerability. The focus is on the Central Business District (CBD) network type. The three dimensions; …
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Kinetic analysis of endosome processing : maturation of early endosomes and vesicular traffic to lysosomes
… processing and delivery to the lysosomes. Two models for endosome processing have previously been proposed in the literature, namely the maturation and vesicular traffic models. The general consensus has been an early phase of intermingling of the endocytic contents markers within early …
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TOWARDS MODELING DRIVER BEHAVIOR UNDER EXTREME CONDITIONS
… of a micro-simulation modeling framework of traffic flow to support evaluation of management strategies and measures in emergency situations. To accomplish this objective, particular attention is given to understanding and representing "panic behavior" of individuals and how this behavior may …
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Modeling and Estimation Techniques for Wide-Area Network Traffic with Atypical Components
… load placed on these networks. Efforts to model traffic are often confounded by atypical traffic - traffic particular to the observation site not ubiquitously applicable. The causes and characteristics of atypical traffic are explored in this thesis. Atypical traffic is found to interfere with …
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Identifying and modeling unwanted traffic on the Internet
Accurate models of Internet traffic are important for successful testing of devices that provide network security. However, with the growth of the Internet. it has become increasingly difficult to develop and maintain accurate traffic models. While much internet traffic is legitimate, productive …
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Increasing the survivability of long distance fiber optic networks
… fiber's capability of carrying a large amount of traffic. In this study, we are concerned with the role of topology in relation to the survivability and network cost. Studying three simple network topologies, the ring, hub and mesh topologies, the ring topology is found to have many advantages for …
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Creating Models Of Internet Background Traffic Suitable For Use In Evaluating Network Intrusion Detection Systems
This dissertation addresses Internet background traffic generation and network intrusion detection. It is organized in two parts. Part one introduces a method to model realistic Internet background traffic and demonstrates how the models are used both in a simulation environment and in a lab …
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Concurrent Transmission with Adaptive Forwarder Set
… energy inefficient for non-flooding traffic models, because in such cases not every node needs those flooding packets, but all of them have to receive and then forward. Efforts have been spent in reducing forwarder set size for those cases, typically by removing those nodes which are …
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Architectures for a space-based information network with shared on-orbit processing
… over constellation topologies under different traffic models. With high network capacity availability, space-borne processing can be accessible by any mission satellite attached to the network. Space-borne processing capabilities can be enhanced with commercial processors that are tolerant of …
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Novel techniques in large scaleable ATM switches
… description of the proposed ATM switch. Various traffic models are used to quantify the switch's performance. These include a simple exponential inter-arrival time model, a locality of reference model and a self-similar, bursty, multiplexed Variable Bit Rate (VBR) model. FIFO queueing is simple …
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