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 43 for “"100 meters"”.
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Otimização estrutural de tetos flutuantes tipo pontão
… equipment’s cost, since some floating roofs have 100 meters of diameter. Motivated by diminishing structural weight, this work aims to optimize the structure of pontoon floating roofs. The results achieved may help floating roof’s initial design.
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Sea surface and related subsurface temperature anomalies at several positions in the Northeast Pacific Ocean.
… the SST anomaly generally extended to depths of 100 meters or more. November through April were found to be the months most favorable for the occurrence of these deeply penetrating anomalies. Summertime SST anomalies were determined to be shallow features of less than 40 meters and were not …
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Sedimentologic and Stratigraphic Significance of Boulder Layers in the Outer Coastal Plain of Southeastern Virginia
… <p>The ancestral James River with sea-level 100 meters lower than today probably had the capacity to entrain 70-80 percent of the clasts in the boulder layers, but probably not the capacity to entrain the larger cobbles and boulders in the boulder layers. Winter river-ice rafting might …
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A Hyperspectral Imager for a Cubesat to Identify Ocean Ship Parameters
… is limited by the spatial resolution of 100 meters. The spectral signature of the boat is dramatically different from the spectral signature of the open Ocean especially within the range of 400 to 1000 nanometers, and this threshold is the basis for extracting ship data. Hyperspectral …
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A Low Cost Localization Solution Using a Kalman Filter for Data Fusion
… fix of a GPS unit. A maximum error of two meters of deviation from the reference is shown for a complex path over two minutes and 100 meters long.
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Design and construction of a low cost, modular Autonomous Underwater Vehicle
… shallow cruising vehicle with a depth rating of 100 meters. With a weight of less than 50 kg, the AUV can easily be launched and recovered by hand from Sea Grant's 25 ft vessel. Although specifically designed to support Didemnum research, the AUV incorporates a flexible and modular design which …
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FinTechs and the city : agglomeration economies of financial services firms in Midtown Manhattan
… space, I conduct these analyses at three radii: 100 meters, 250 meters, and 500 meters. Ultimately, my research confirms the statistically and substantially significant presence of agglomeration among financial services in Midtown. Furthermore, this thesis contributes to existing agglomeration …
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On evaluating small-scale variations of hydrologic processes in time and space
… and temporal scales. The results show that 100 meters in space and 15 minutes in time are optimal scales for accurate and efficient simulations. Scale factor functions are developed based on the numerical experiments. Hydrologic responses at large scales can be predicted by a scale factor …
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Seismic scattering attributes to estimate reservoir fracture density : a numerical modeling study
… vary the spacing of the fracture zones from 10-meters to 100-meters, corresponding to fracture density values from 0.1- to 0.01-fractures/meter, respectively. The vertical component of velocity is analyzed using integrated amplitude and spectral attributes that focus on time windows around the …
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Radiolocation using AM broadcast signals
… in published antenna positions sometimes exceeds 100 meters, I conducted sub-meter-accuracy geodetic surveys of 29 Boston-area AM-broadcast antennas. The directional radiation patterns of the array antennas of many AM broadcast radio stations have phases that vary with azimuth angle. I developed …
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RELATING METABOLIC PHENOTYPES TO MOVEMENT BEHAVIOR IN BROOK TROUT
… range from individuals that stay within the same 100 meters their entire life to individuals that are potamodromous or anadromous. Potential drivers of movement life histories have been the subject of much research in fish, with genetic subpopulation explanations often failing to explain the …
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Social infrastructure
… is that 4 .5 million US residents live within 100 meters of a four-lane highway' and have become hound to communities, which endure social hardship and environmental detriment. For too long, the physical form of the city has taken a relaxed position on these endangered and often hazardous urban …
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Wind in the Upper Midwest: Assessing Wind Resource Variability and Representation in Reanalyses
… of wind turbines (hub-height, often around 80-100 meters). Reanalyzed wind fields were found to capture many of the mean, variational and distributional characteristics of wind speeds at 10-meters as measured by weather stations, though declining trends in the observations were not found to be …
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Test and evaluation of an image-matching navigation system for a UAS operating in a GPS-denied environment
… can be accurate to the order of roughly 100 meters when flying at two kilometers above the surface and unfiltered orientation estimates are accurate to within a few degrees. This thesis examines developed algorithms on a suite of video data, seeking to reduce the errors in estimating …
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Development, modeling and testing of a slow-burning solid rocket propulsion system
… 10 kilograms are capable of flight faster than 100 meters per second. A small, fast aircraft requires a propulsion system which is both miniature and high-power, requirements which current UAV propulsion technologies do not meet. To meet this need, a slow-burning solid rocket motor has been …
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Development, modeling and testing of thermal protection systems in small, slow-burning solid rocket motors
… (UAVs) that can fly at speeds faster than 100 meters per second while maximizing endurance. Operating in such a regime requires the use of a slow-burning solid rocket motor. To achieve long burn times, an end-burning grain configuration is required in addition to a burn rate suppressant. …
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Heart Rate and Neuromuscular Fatigue in Intermittent Sprinting
… subjects across a sprint-interval workout (2x50-meters, 3x100-meters, 2x50-meters) to determine if they are correlated with neuromuscular fatigue as quantified by the percent reduction in countermovement jump height after each repetition. Out of four workout trials, only one showed a significant …
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Analytical and Numerical Analysis of Static Coulomb Formations
For close proximity flying on the order of 10-100 meters, Coulomb thrusting presents a promising alternative to other methods of propulsion. This clean and fuel-efficient propulsion method is being investigated for use in formation flying and virtual structures. In the latter application, the …
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An inverse approach to understanding benthic oxygen isotope records from the last deglaciation
… global sea level rose approximately 100 meters in response to melting ice sheets and glaciers, and atmospheric concentrations of carbon dioxide increased. This interval may provide an analog for the evolution of future climate. The ocean plays a key role in the modern climate system …
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An inverse approach to understanding benthic oxygen isotope records from the last deglaciation
… global sea level rose approximately 100 meters in response to melting ice sheets and glaciers, and atmospheric concentrations of carbon dioxide increased. This interval may provide an analog for the evolution of future climate. The ocean plays a key role in the modern climate system …
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