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 19 of 19 for “"sentry"”.
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Mutualism benefits and the evolution of an interspecific sentry call in associations between Sociable Weavers and Fork-tailed Drongos
… drongos increase foraging opportunities through sentry call behaviour. When with drongos, weavers increased their foraging time and reduced vigilance. Experimental playbacks further demonstrated that drongo sentry calls attract sociable weavers, as well as increasing their foraging time and …
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Modeling and control of an autonomous underwater vehicle with combined foil/thruster actuators
The Sentry AUV represents a radical departure from conventional AUV design, particularly with respect to actuation. The vehicle's combined foil/thruster actuators have the potential to produce a vehicle both maneuverable in the veritical plane and efficient in forward flight, well suited to survey …
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Vertical distributions of megafauna on inactive vent sulfide features correspond to their feeding modes
… two inactive sulfide features, Lucky's Mound and Sentry Spire, to determine how taxonomic composition and feeding traits vary with vertical position on the features. A total of 51 morphotypes, each categorized to feeding mode, was identified from three levels of the features (spire, apron, and …
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Vertical distributions of megafauna on inactive vent sulfide features correspond to their feeding modes
… two inactive sulfide features, Lucky's Mound and Sentry Spire, to determine how taxonomic composition and feeding traits vary with vertical position on the features. A total of 51 morphotypes, each categorized to feeding mode, was identified from three levels of the features (spire, apron, and …
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Systems approach to the design of locomotive fatigue management technologies
… an infrared eyelid monitor and a generic Train Sentry class activity monitor, to isolate the common drowsiness component and obtain an improved estimate of the operator's state. A study first quantified the important physical aspects of the locomotive cab and engineer behavior pertinent to the …
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A parallel hypothesis method of autonomous underwater vehicle navigation
… Lab's Autonomous Benthic Explorer (ABE) and Sentry autonomous underwater vehicles during operations on the Juan de Fuca Ridge. This algorithm uses a nested architecture to break the navigation solution down into basic building blocks for each type of available external information. The …
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Pathological and physiological relationships of parasitic disease in a select cottontail rabbit population
… with insecticide-generating collars (Sergeant's Sentry Dog Collar) and a broad spectrum antihelminth drug (Tramisol, American Cyanamid) to reduce parasite burdens. Rabbits were confined in 4 one-quarter acre outdoor enclosures during the treatment period. Thirty-one rabbits were recovered at the …
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Living clean and shopping green: Environmental domesticity and the nineteenth-century roots of ecoconsumption
… American woman as a white, middle-class domestic sentry, responsible for controlling the purity of the American domicile in its many forms. Using the concept “environmental domesticity”(a collection of ideologies and practices that treat domestic space as an environment in and of itself) as an …
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A parallel hypothesis method of autonomous underwater vehicle navigation
… Lab's Autonomous Benthic Explorer (ABE) and Sentry autonomous underwater vehicles during operations on the Juan de Fuca Ridge. This algorithm uses a nested architecture to break the navigation solution down into basic building blocks for each type of available external information. The …
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Perceive, predict, and plan: robotic expeditionary science in oceanic spatiotemporal fields
… of observational data collected with AUV Sentry during field trials in the Guaymas Basin, Gulf of California are interwoven with algorithmic analyses, demonstrating how intelligent perception, prediction, and planning enables novel insights about hydrothermal plumes.
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Microwave Overlay Capacitor Fabrication on Printed Circuit Boards
… measure passband characteristics, during which a Sentry 500VA Hipot Tester was used to apply bias to the filters for tunability measurements. The structures were simulated using High Frequency Structure Simulator (HFSS), to provide a relationship between frequency shift and relative permittivity. …
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Perceive, Predict, and Plan: Robotic Expeditionary Science in Oceanic Spatiotemporal Fields
… of observational data collected with AUV Sentry during field trials in the Guaymas Basin, Gulf of California are interwoven with algorithmic analyses, demonstrating how intelligent perception, prediction, and planning enables novel insights about hydrothermal plumes.
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Yield and water use efficiency of different plant populations of dryland corn and sorghum
… of 1.7 m in the center of each plot, using a Sentry AP-200 moisture probe. Overall mean grain yield for com was 3909 kg ha- l . For sorghum, it was 4800 kg ha-] for cultivar Dekalb-48 and 4740 kg ha⁻¹ for cultivar Southern States-1212. Soil water measurements showed that soil water stress …
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the silent choir
no abstract
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the silent choir
no abstract
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Redesigning the Dong Fang Hong locomotive speedometer system to suit diesel electric locomotives
… of locomotive speed and DE locomotive sentry panel voltage (vsp) was used to verify the accuracy of the new system. The results conformed to the DE standards. In order to verify the performance of the mileage counter (odometer), predetermined distances between particular stations were …
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Redesigning the Dong Fang Hong locomotive speedometer system to suit diesel electric locomotives
… of locomotive speed and DE locomotive sentry panel voltage (vsp) was used to verify the accuracy of the new system. The results conformed to the DE standards. In order to verify the performance of the mileage counter (odometer), predetermined distances between particular stations were …
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Assessing Drift and Lateral Mobility of Flazasulfuron and Trifloxysulfuron Sodium
… wind speeds were between 6.4 and 9.6 km h-1 and sentry plants were placed various distances between 0 and 30 m down wind. Wind speeds and direction were confirmed with anemometers and neutrally-buoyant balloons. Herbicide drift was not detected beyond 4.6 m downwind of either herbicide …
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Analysis of the central Hawke's Bay sector of the Late Neogene forearc basin, Hikurangi margin, New Zealand
… the Papakiri Member (Matahorua Formation) and Sentry Box Formation. Geochemical analysis of glass shards in the Hikuroa Pumice Member (Petane Formation) suggests a correlation to tephra in the ODP 1124 record, and an inferred age of c. 2.15 Ma is suggested for this unit. The Plio-Pleistocene …