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 40 for “"vertical movement"”.
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The vertical-mill stage : design of a vertical movement stage for surface machining
… goal of this project is to design a machine for vertical axis movement which can be measured and controlled. The key issues addressed in this thesis, are the motion past obstacles in the extrusions, a lightweight mechanism that is stiff with minimal horizontal deflections, can adjust to different …
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Hub and Axis
… uses axes to determine entering, exiting and vertical movement. The hub configuration of the building is in concentric rings around the atrium in both space and materials. As materials were brought into the building, they enhanced the strong axial configuration and emphasized the layers …
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Modal Analysis of a Discrete Tire Model and Tire Dynamic Response Rolling Over Short Wavelength Road Profiles
… tread or sidewall as inputs or outputs. The vertical movement of the wheel was incorporated into the in-plane rigid–elastic-coupled tire modal model to extract the transfer function (TF) that connects road irregularities as an input to the wheel's vertical movement as an output. The TF was …
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An Approach to Using Finite Element Models to Predict Suspension Member Loads in a Formula SAE Vehicle
… angle input to the suspension, and neglecting vertical articulation of the system. This thesis presents an approach to modeling the suspension member loads by creating a finite element (FE) model of the entire suspension system. The first stage of this research covers the validation of the …
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Behavioural Ecology of Lake Trout: From Movement Ecology to Bioenergetics
The movement patterns of most organisms are directed to maximizing the success of habitat exploitation, which can be quantified by examining population-level parameters such as size and age at maturity, and the population bioenergetics. Similarly, the behavioural decisions of organisms are …
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Palladium uptake and its effect on behavioural and molecular markers in the freshwater shrimp Gammarus pulex
… the 96 LC50 test and several behavioural (vertical movement and feeding activity) and biochemical (acetylcholinesterase (AChE); osmoregulation; 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyl-tetrazolium bromide (MTT) reduction; reduced glutathione (GSH); glutathione-S-transferase (GST); …
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Design of sprayer boom suspensions through computer simulation and design optimization
Control of the movement of the field sprayer boom will directly enhance uniform deposition of chemicals. Means are necessary to insure that the boom structure supporting the spray applicators follows low frequency ground slope changes and to insure attenuation of high frequency signals from the …
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Wave Energy Extraction from buoys
… tested or under development are using the vertical movement of floating bodies to generate electricity. For commercial applications, arrays have to be considered in order to produce a significant power. In this thesis, we investigate the interaction between floating buoys from an …
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Gateroad Design in Overlying Multi-Seam Mines
… activities in the lower seam. Analysis showed vertical movement in the upper seam and roof CMRR (Coal Mine Roof Rating) to be the controlling factors in damage prediction and, therefore, gateroad planning and design. The relationship between the predicted damage rating and the gateroad …
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Biogeomorphic processes and archaeological site formation in Absaroka Mountains of northwestern Wyoming
… of sediment can result in both lateral and vertical movement of cultural material. However, fossorial activity does not necessarily negate the research potential of a site. Burrowing mammals may actually reveal previously unidentified archaeological sites, help land managers develop …
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Art Center
… in this tower building are encouraged to move vertically through stairways and vertically aligned public spaces. By engaging the body and senses in this vertical movement, the artists would find their way out of the urban canyon to the sky of imagination. They would also be able to live lightly …
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Genesis : the search for origins : the curation and contamination control of returned solar wind samples
… effects were minimised with faster speeds. Vertical movement of the stage of 5 pm/pass was found to optimise the focal point of the laser, and minimise heating effects. A procedure to measure the flexural modulus of samples was proposed to quantify the success of the optimisation of the …
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Crayfish Predation on Juvenile Freshwater Mussels (Bivalvia: Unionidae)
… chemical cues from predators and will decrease movement in order to avoid predation. Both horizontal and vertical movement of mussels decreased when exposed to water that contained or had previously contained crayfish. When crayfish cues were absent, mussels burrowed more readily in fine …
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Penetrable walls
… and private sectors and allow for horizontal and vertical movement through the house. The exterior walls are positioned to compress the inner portions. A change in material clarifies the distinction between the two sections. Concrete block gives mass and strength to the container, and plaster …
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Human response to vibration from earthmoving machines.
… risks for the drivers. For these machines the vertical, 'Z', axis was established as the direction of vibration propogation presenting greatest potential risk. The principal reference was IS02631:1978(E) and acceleration levels were measured at frequencies up to 100 Hertz for analysis and …
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Kinematic Analysis of a Threaded Fastener Assembly
… of the bolt into the nut as well as the vertical movement of the origin of the bolt reference frame, we determined that there are three types of contacts states present: unstable two-point, quasi-stable two-point, stable three point. Though the unstable case remains to be deciphered, the …
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A descriptive study on three Icelandic horses measuring differences in vertical asymmetry during trot in a straight line and in a circle between two saddle placements using an objective gait analysis system
… seen in Icelandic horses (P2). Objective data on vertical movement asymmetry (minDiff and maxDiff values) was collected and measured at the head, withers, and sacrum. Additionally, subjective feedback from the rider on the perceived balance, comfort, and overall rideability of the horses was …
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Diel vertical migration and frontal variability of acoustic backscatter in the Balearic Sea
… abundance of zooplankton and characterize diel vertical migration (DVM). DVM is the mass vertical movement of zooplankton and fish between the surface waters where they feed at night, and the mesopelagic zone where they avoid predators during the day; it is considered the largest migration of …
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Tritium Plume Dynamics in the Shallow Unsaturated Zone Adjacent to an Arid Waste-Disposal Facility, Amargosa Desert Research Site, Nevada
… stability, suggesting that bulk-plume movement was minimal during the period of study. Nonetheless, evidence of localized lateral advancement along some margins, combined with increases in the spatial covariance of concentration distribution, indicates that intra-plume mass …
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Wireless chemical sensing schemes using environmentally sensitive hydrogels
… by standard phase 6 detection methods, 2) vertical movement of a polymeric magnet, which can be remotely detected by a giant magneto resistance (GMR) sensor, and 3) a variation of microbubble-density inside of the hydrogel, which can be evaluated using an ultrasound imaging equipment. The …
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