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 34 for “"Delay-based"”.
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Exploring delay-based tcp congestion control
… whether correlation between congestion and the delay signal of each flow on a link is really necessary for delay-based congestion control to function. It also explores the behaviour of the delay-based AIMD (DB-AIMD) algorithm in various network environments. Chapter 4 presents an experimental …
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Copa : practical delay-based congestion control for the internet
… where d[subscript q] is the (measured) queueing delay, optimizes a natural function of throughput and delay under a Markovian packet arrival model. Second, it adjusts its congestion window in the direction of this target rate, converging quickly to the correct fair rates even in the face of …
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Delay based approach to support low priority users in preemptive wireless networks
… general public. In this thesis, we propose the delay-based soft preemptive approach to support the low priority users and provide an alternative to several preemptive policies by further examining them. We provide a queuing algorithm in the network that warns the low priority users with an …
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A Role for the Lateral Habenula in a Delay Based Decision Making Test
… choice under changing task conditions. Since delay-discounting performance relies on an analysis of subjective values of reward (i.e. a cost-benefit interpretation) to determine choice preferences as task conditions change, the current study tested rats’ performance on a maze-based …
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A hardware-embedded, delay-based PUF engine designed for use in cryptographic and authentication applications
… In this dissertation, a Hardware-Embedded Delay PUF (HELP) is proposed that is designed to leverage path delay variations that occur in the core logic macros of a chip to create random bitstrings. A thorough discussion is provided of the operational details of an embedded path timing …
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Methodology for Development of Delay-Based Passenger Car Equivalents of Heavy Vehicles in Work Zones
… of heavy vehicles in work zones are developed based on delay caused by the heavy vehicles since delay captures the effects of heavy vehicles better than other parameters. A mathematical model was developed to determine the bounds on the delays in work zones. The results of the model for level …
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Development of a methodology for measuring delay-based passenger car equivalent for heavy vehicles at signalized intersections
… heavy vehicles at signalized intersections are based on headway concepts, and are mainly focused on adjusting the ideal saturation flow rate. They do not reflect the total effect of heavy vehicles on delay. The constant PCE value, which is independent of traffic volume and percentage of heavy …
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Low-Power, Stable and Secure On-Chip Identifiers Design
… we propose techniques to improve the popular delay-based PUF architectures holistically, with a focus on its stability. In the first part, we investigate the effectiveness of circuit-level optimizations of the delay based PUF architectures. We show that PUFs which operate in the subthreshold …
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Voice Call Capacity Over Wireless Mesh Networks
… call carrying capacity of an IEEE 802.11b/e based ad hoc network. We begin with the modelling of conversational speech and define a six state semi-Markov voice model based on ITU-T P59 recommendation. We perform a theoretical analysis of the voice model and compare it with results obtained …
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Techniques for design and implementation of physically unclonable functions
… as we will demonstrate in this work, the classic delay-based PUF structures have a number of drawbacks including susceptibility to prediction, reverse engineering, man-in-the-middle and emulation attacks, as well as sensitivity to operational and environmental variations. To address these …
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Design, Analysis, and Testing of Memristive Logic and Authentication Architectures
… undergoing drastic changes since the transistor-based devices scaling are approaching their physical limits. For example, current technology of the finFET is going towards 5nm. Hence, any variation of the channel size could produce undesirable effects, which brings challenges to addressing the …
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Monetizing truck freight and the cost of delay for major truck routes in Georgia
This research provides an example delay calculation for long-haul single unit and combination trucks on Interstate-75 (I-75) in Georgia. Truck profiles on Georgia interstates are used to calculate the value of freight by truck type and commodity moved. Determining the types of trucks and …
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Microphone Array Based Sound Source Detection and Localization with Beamforming, GCC-PHAT, and Triangulation using Arduino and MATLAB
… operations for gunshot detection, scream based localization, etc., it will help us understand how important sound localization is for people’s safety. This research adopts a simple and powerful, Arduino based MATLAB sound source detection and localization system, with a reduction in …
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Elasticity detection : a building block for internet congestion control
… Such a scheme will not be able to control delays because the cross traffic will not cooperate to maintain low delays. If, however, cross traffic is inelastic, then one can use a suitable delay-controlled algorithm. Our elasticity detector uses an asymmetric sinusoidal pulse pattern and …
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A Robust Power-Scalable Transmitter Architecture for Wireless Body Area Networks
… is presented that uses closed-loop PLL- based BFSK modulation and is reconfigurable for both the MedRadio and 433 MHz ISM bands. A power efficient class-C amplifier is utilized and the design methodologies for designing a highly efficient and low-power amplifier are discussed in detail. …
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A study on fairness and latency issues over high speed networks and data center networks
… scheme called Approximated-Fair and Controlled-Delay (AFCD) queuing scheme that meets following goals for high speed networks: approximated fairness, controlled low queuing delay, high link utilization and simple implementation. The design of AFCD utilizes a novel synergistic approach by forming …
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Ablation of Steel by Microsecond Pulse Trains
… removal during percussion drilling when the delay between the pulses is properly defined. The light-matter interaction moves from a regime of surface morphology changes to melt and vapour ejection. Inline coherent imaging (ICI), a broadband, spatially-coherent imaging technique, is used to …
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Enhancing voice pitch perception in cochlear implants
… strategy. In contrast, a proposed strategy, the Delay-based F0Mod strategy, was equivalent to Milczynski’s F0Mod strategy in all tasks, but was not significantly less preferred in terms of sound quality to ACE. Additionally, this strategy shows that amplitude modulation done out of phase across …
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