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 451 for “"Sweep"”.
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The return-sweep in reading.
Return-sweeps are saccadic eye movements that take a reader’s fixation from the end of one line to the beginning of the next. Our current understanding of return-sweeps is limited to a description of their physical characteristics. Moving beyond these descriptive characteristics, this thesis …
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The Aerodynamics of Low Sweep Delta Wings
… a diamond-shaped-planform, with a leading edge sweep of 42°, was tested with the mini-flap. Surface pressure distributions were obtained and the control flow results were contrasted with the no-control cases. Our results indicated flow control was very effective at 20° sweep, but less so at 40° …
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Sweep and Taper Analysis of Surfboard Fins Using Computational Fluid Dynamics
… field. This was done by isolating the taper and sweep distribution of a baseline geometry and varying each parameter individually whilst maintaining a constant span and surface area. The baseline surfboard fin was used as a template in Matlab to generate a set of x and y coordinates that defined …
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Design and Dynamic Analysis of a Variable-Sweep, Variable-Span Morphing UAV
… and maneuvers. The ability to vary both the wing sweep and span can enable maximum performance for a diverse range of flight regimes. For example, low-speed missions can be optimized using a wing with high aspect ratio and no wing sweep whereas high-speed missions are optimized with low aspect …
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Study Of Chaotic Ultrasound And Frequency Sweep Excitations In Sonic Ir Nde Technology
… process of two most important methods, frequency sweep excitation and chaotic excitation, to improve the defect detection ability of Sonic IR technology.</p> <p>The tool used in our study is known as finite element analysis (FEA). According to test process of Sonic IR technology, some special …
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Sweep all like a Deluge". Lavoro e cittadinanza nella filosofia di John Locke"
La tesi indaga la risignificazione storico-concettuale del lavoro in rapporto alla cittadinanza nell'opera di Locke, evidenziando come l'attività lavorativa abbia operato come un dispositivo di inclusione differenziale degli abitanti del Commonwealth. Sulla linea della tipologia di lavoro, del …
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Sweep-Line Extensions to the Multiple Object Intersection Problem: Methods and Applications in Graph Mining
… algorithmic paradigm, collectively known as the sweep-line or plane sweep algorithm. However, its application inherits a number of limitations including lack of versatility and lack of support for ad hoc intersection queries. With these limitations in mind, we design and implement a novel, exact, …
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Visualization of a plane sweep algorithm for construction of the visibility graph for robot path planning
… for solving this problem is based on a plane-sweeping technique and runs in O(N{dollar}\sp2{dollar} log N) time; Since this solution has been studied very briefly in its theoretical form by (SS84), we present an in-depth analysis of the plane-sweep algorithm along with a full-scale …
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Living coal : Robert Boyle, John Holland, and the bodily passages of chimney sweep literature, 1684-1824
… infused with living coal upon young chimney sweeps. In so doing, I show how writers, especially John Holland, registered the dynamic interrelationship between chimney sweeps, chimneys and coal as bodily passages. To assist our imagining of these bodily passages, I adapt Edward Casey’s logic …
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Development of Automatic CFD Grid Generation for the Design of the Preliminary Wing Sweep Schedule for the Gulfstream Quiet Supersonic Jet
<p>The wing sweep schedule for the Gulfstream Quiet Supersonic Jet (wing and body) was investigated using CFD analysis methods. The use of automating the gridding procedure allowed for numerous cases to be investigated. The examination of the drag polar for different Mach cases indicated the …
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Application of Sweep Frequency Response Analysis and Locked-Rotor Test for Stator Winding Inter-Turn and Broken Rotor Bar Fault Detection of Squirrel-Cage Induction Motors
… replacement of the affected coil or winding. The sweep frequency response analysis (SFRA) approach, developed by Dick and Erven [12], allows for the detection of small changes in the windings due to the effect of short-circuits by analysing the winding impedance over its bandwidth. This technique …
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The effect of cropping systems on the pest complex in Virginia soybeans and calibration of the sweep net and ground cloth sampling methods for use in these cropping systems
… each pair was collected with a 38 cm. diameter sweep net (25 sweeps per sample) and the other sample was collected with a 0.91 meter ground cloth. In addition, after each ground cloth sample was obtained, the foliage and base of the plants in the 0.91 m sample were searched for additional …
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Image morphological processing
… A new class of morphological operations called sweep mathematical morphological operations is developed. The theoretical framework for representation, computation and analysis of sweep morphology is presented. The basic sweep morphological operations, sweep dilation and sweep erosion, are …
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Comprehensive evaluation of a novel EOR method-coupling low salinity water flooding and preformed particle gel to enhance oil recovery in fractured reservoirs
… used to plug the thief zones and thereby improve sweep efficiency in reservoirs. However, particle gel treatment can only be used to plug fractures or high permeable channels to improve sweep efficiency and has little effect on displacement efficiency.</p><p>Oil recovery is the product of …
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Evaluation of Rice Stink Bug, Oebalus pugnax (F.), Damage and Monitoring Techniques in Rice, Oryza sativa L., and Grain Sorghum, Sorghum bicolor (L.)
… conducted from 2016-2018 to asses variation in sweep net sampling by observing producers, researchers, extension personnel, consultants and their workers. Large levels of variation were found in sweep lengths between observed sweepers and reliability of smaller sweep lengths that were commonly …
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Numerical simulations of ion transport membrane oxy-fuel reactors for CO₂ capture applications
… oxygen ions from the air (feed) side to the sweep gas or reactive gas (permeate) side of the membrane, driven by the oxygen chemical potential gradient across the membrane at elevated temperature. When a fuel such as methane is introduced into the permeate side as a sweep gas, hydrocarbon …
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Model-order reduction techniques for the numerical solution of electromagnetic wave scattering problems
… The ultimate goal is to enable a fast-sweep analysis. In a fast-sweep problem, some parameter on which the original problem depends is varying and the problem must be solved as the parameter changes over a desired parameter range. The complexity of the original model prohibits its …
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