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 26 for “"Preferred Direction"”.
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An Alternative Estimate of Preferred Direction for Circular Data
… of interest in circular data is estimating a preferred direction and its corresponding distribution. This problem is complicated by the so-called wrap-around effect, which exists because there is no minimum or maximum on the circle. The usual statistics employed for linear data are …
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Boundary-value problems for transversely isotropic hyperelastic solids
… material subject to finite deformation. The preferred direction associated with the transverse isotropy lies in the planes normal to the tube axis and is disposed so as to preserve the cylindrical symmetry. For a general form of strain-energy function the considered deformation yields simple …
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Assembly Sequence Optimization and Assembly Path Planning
… categorize parts/subassemblies based on their preferred direction of assembly while allowing re-orientation of the base part. It is assumed that the preferred direction of assembly is vertically downward, consistent with manual as well as most automatic assembly protocols. Our attempt is to …
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Phenomenological models of motor proteins
Motor proteins produce directional movement and mechanical output in cells by converting chemical energy into mechanical work. Innovative applications of physics experimental techniques to the study of motor proteins have generated a wealth of data. By careful analysis and modeling of this data, we …
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Processing of acoustic motion in the auditory cortex of the rufous horseshoe bat, Rhinolophus rouxi
… bat, Rhinolophus rouxi. Motion in horizontal direction (azimuth) was simulated using successive stimuli with dynamically changing interaural intensity differences presented via earphones. The mechanisms underlying a specific sensitivity of neurons to the direction of motion were investigated …
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The rearrangement of cyclopropyl carbenes
… itself gives rise mainly to cyclobutene. The direction of ring opening has been determined from a study of asymmetrically substituted cyclopropyl carbenes, The substitution pattern in the product cyclobutenes indicated that the least substituted bond of the cyclopropane ring was migrating …
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Theoretical and experimental study of nonlinear internal gravity wave beams
… motion is anisotropic since gravity provides a preferred direction. As a result, a localized source oscillating at a frequency below the buoyancy frequency in a uniformly stratified Boussinesq fluid, rather than cylindrical wavefronts, gives rise to elongated disturbances propagating along …
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Ultra-lightweight nanorelief networks : photopatterned microframes
… energy absorption were guided along the symmetry directions in the periodic structures. However, there was found no preferred direction of crack propagation in quasicrystalline nanostructures due to the absence of translational symmetry.
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Beta-Gamma Directional Correlation Measurements
… the angle between the nuclear spin axis and the direction of emission. In a normal radioactive sample the nuclei are randomly oriented, and there is no overall preferred direction of emission. Hence, the radiation pattern is isotropic. However, in a sample in which the nuclei are not randomly …
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Situationally driven local navigation for mobile robots
… determine (a few times a second) the locally preferred direction of travel. This dissertation presents NaTs and the transformation function as well as the needed support systems to demonstrate the usefulness of the technique for controlling the actions of a mobile robot operating in an …
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Role of the Parabigeminal Nucleus in Visuomotor Behavior
… the saccade target. Each was characterized by a preferred direction of RPE. Most commonly, activity rose rapidly with increasing RPE, peaked at a small RPE within the area centralis, and dropped off gradually with increasing target distance. For some cells, the range over which activity was …
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Design, fabrication and mechanical optimization of multi-scale anisotropic feet for terrestrial locomotion
… way of transferring an undirected force to a preferred direction or movement. In this thesis, the fundamentals of friction were studied to achieve a better understanding of how to design multi-scaled robotic feet that use anisotropy for terrestrial locomotion. Static and kinetic friction …
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Functional and structural studies of AAA+ proteases
… elevates HslU ATPase activity and alters the preferred direction of substrate unfolding and degradation. These studies shed light on how substrates are recognized and processed by the HslUV protease. In Chapter 4, I develop and use a disulfide-crosslinking approach to generate mixed HslU …
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HEAD MOTION EVALUATION AND CORRECTION IN MAGNETOENCEPHALOGRAPHY
… motion was quite negligible and had no preferred direction. These findings led to investigation of the effectiveness of two motion correction methods, Single Space Separation (SSS) and General Linear Modeling (GLM) for correction of translational motion. SSS and GLM were evaluated and …
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Cultivating Compassion in Undergraduate College Students: Rhetoric or Reality?
… two undergraduate years, but not all in the preferred direction. While half of the students demonstrated an increase in compassion, 35% decreased in compassion and another 15% remained unchanged. Regression analyses established that community service and immersion trips were associated with …
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Nonlinear dynamics of a nematic liquid crystal in the presence of a shear flow
… temperatures it favours a nematic state with preferred direction of alignment perpendicular to the shear plane, the so-called log-rolling state. We have found excellent agreement between the numerical calculations and analytical results in the limit of very low and very large values of the …
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Lithium pellet injection into high pressure magnetically confined plasmas
… away from the pellet primarily in the poloidal direction with a characteristic speeds of ~ 5km/s. Significant differences appeared in the filament drifts in RF heated H-mode plasmas compared to ohmic L-mode plasmas. Filaments in ohmic L-mode plasmas moved in both the electron and ion diamagnetic …
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A study of the seismic behaviour of geomorphological features using ambient noise measurements
… motion amplification and polarization effects (directional effects) at three particular sites which exhibit different geomorphological characteristics: Il-Prajjet area which exhibits landsliding phenomena due to the soft Blue Clay underlying the rigid Upper Coralline Limestone; Xrobb l-Għaġin …
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Micro and nanostructured surfaces for enhanced phase change heat transfer
… deflected with angles ranging from 7 -52'. Uni-directional liquid spreading was demonstrated where the liquid propagates in a single preferred direction and pins in all others. Through experiments and modeling, we determined that the spreading characteristic is dependent on the degree of …
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Spectral and ocellar inputs to honeybee motion-sensitive descending neurons
… only occurred for the green stimulus in the preferred direction. The short-wavelength stimulus induced clear inhibitory responses for all tested motion directions. The results suggest that besides green photoreceptors, the motion-sensitive descending neurons also receive inputs from the …
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