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 25 for “"configuration changes"”.
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Multi-configuration model tuning for precision opto-mechanical systems
… the designed system and are able to track along configuration changes. This thesis outlines a three-step procedure for model tuning of complex opto-mechanical systems in the presence of measured experimental data. It is the hypothesis of this thesis that this procedure will produce a model that …
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Stochastic adaptive estimation with applications to nonlinear control
… of tracking linear plants that undergo rapid configuration changes. The first is a modification of the Partitioned Adaptive Estimator, PAE, first introduced by Magill in 1965, improved and named by Lainiotis, and used in a number of applications, primarily aerospace. The PAE algorithm was …
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Improving Seaglider Efficiency: An Analysis of Wing Shapes, Hull Morphologies, and Propulsion Methods
… of oceanic environments. These gliders leverage changes in buoyancy and the resulting vertical motion, to generate forward locomotion via hydrodynamic surfaces. In order to function for extended periods, these systems operate in a low-speed, low-drag regime. This research examines factors …
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SYSTEMATIC DISCOVERY OF ANDROID CUSTOMIZATION HAZARDS
… This dissertation further discovers security configuration changes through a systematic differential analysis among custom devices from different vendors and demonstrates that they could lead to severe vulnerabilities if introduced unintentionally.</p>
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An acoustical based approach to conceptual design of non-traditional rotorcraft configurations
… to communities. This research investigates three configurations of rotorcraft: coaxial rotors, ducted rotors, and ducted coaxial rotors, to provide insight on how design configuration changes the acoustics of these vehicles. The methodology developed is a parametric environment to provide detail …
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COMPARING TLS AND CERTIFICATE CONFIGURATIONS OF GOVERNMENT AND NON-GOVERNMENT WEBSITES
… more likely to implement relatively simple configuration changes, there remain gaps wherein guidelines are not being implemented. In such cases, government cybersecurity configurations closely resemble those of the private sector domains tested. We conclude by examining the possibility of …
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Development of a Variable Camber Compliant Aircraft Tail using Structural Optimization
… to study the benefits of large planform changes and flight control morphing. Morphing capabilities of each wing consist of 8 in. wing extension and contraction, 40° of wing sweep and ±20.25° of outboard wing twist in addition to 6 in. of tail extension and contraction. Initial wind-tunnel …
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Torsion of Elliptical Composite Cylindrical Shells
… has a sensitivity of the buckling twist to changes in the length-to-radius ratio the same as the circular cylinder. A quasi-isotropic lamination sequence of a medium-modulus graphite-epoxy composite material is assumed. The STAGS finite element code is used to obtain numerical results. The …
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Configuration-aware software documentation
… is pervasive, it can also lead to faults (or misconfigurations) and make program evolution challenging. Dependencies can be missed, essential code can be left in place when a configuration option is removed, or code can be deleted or changed when still in use by other configuration options. One …
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Cyber-security Risk Assessment
… is inherently dynamic. Not only does system configuration changes frequently (with new releases and patches), but also new attacks and vulnerabilities are regularly discovered. The threat in cyber-security is human, and hence intelligent in nature. The attacker adapts to the situation, target …
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Simulation of Airflow and Heat Transfer in Buildings
… before construction can save money in design changes. Computational fluid dynamics (CFD) has been explored as a means of analyzing energy usage and thermal comfort in buildings. Existing research has been focused on simple buildings without much application to real buildings. The current study …
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Improved Guidance, Navigation, and Control for Autonomous Underwater Vehicles: Theory and Experiment
… and/or net buoyancy of an AUV/payload configuration changes. In comparison to commonly implemented AUV attitude controllers, which neglect roll motion and address pitch and yaw dynamics separately, we derive a novel linear time-varying model that explicitly displays the coupling between …
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Adaptive Protocols to Improve TCP/IP Performance in an LMDS Network using a Broadband Channel Sounder
… of improving TCP/IP performance by trigging configuration changes in an adaptive data link layer protocol. We present an adaptive data link layer protocol that can use different levels of forward error correction (FEC) codes and link layer automatic retransmission request (ARQ) to improve …
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Portal: An Interaction Independence Middleware Framework
… application be recompiled and /or its internal configuration modified to incorporate the given device(s). Portal, an interaction independence framework, seeks to add a layer of abstraction between arbitrary application code and the devices they support; allowing developers to deal in the realm …
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Heat Transfer for High Aspect Ratio Rectangular Channels in a Stationary and Rotating Serpentine Passage with Turbulated and Smooth Surfaces
… turbulators are arranged in an offset parallel configuration with a fixed rib pitch-to-height ratio (P/e) of 10 and a rib height-to-hydraulic diameter ratio (e/Dh) range of 0.100 to 0.058 for AR 1:1 to 1:6, respectively. The experiments span a Reynolds number range of 4,000 to 130,000 based on …
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Bus use behavior in multi-route corridors
… and operation are discussed, and service configuration changes for the limited stop corridor are proposed. Given the prevalence of multi-route corridors and the variety of passengers' route choice behavior within them, the incorporation of an understanding of passenger behavior into …
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The significance of transients following failures and repairs in packet-switched networks
… different levels of performance as its configuration changes due to failures and repairs. One approach used to measure overall system performance is to weight the level of performance measured for each system state by the probability that the system is in that state and then sum across …
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Measuring the impact of site configurations on site fingerprinting over the web and Tor
… the Tor network. In this thesis, we examine how changes to a site’s configuration (i.e., the size of the site, site content, hosting strategies, etc.) can influence an adversary’s ability to successfully fingerprint a user’s visit to a site over the web and Tor. We pay particular attention to the …
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Accuracy Improvement in Robotic Milling Through Data-Driven Modelling and Control
… the robot’s tool tip vibration as the arm configuration changes over the workspace. This dissertation addresses the modeling, prediction, and control of instantaneous tool tip vibrations of a 6-dof industrial robot over its workspace using data-driven methods. First, a data-driven modeling …
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