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 261 for “"cones"”.
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Area-minimizing equivariant cones and coflat calibrations
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mathematics, 1987
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An automatic traffic cones dispenser and collector system
… system for dispense and collect the traffic cones by using manipulator which is robot arm. The development of the robot arm which is five degree of freedom is the most important part in this project in order to make this system become an automatic system. A microcontroller PIC18F46K22 is used …
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Confined wrinkling of thin elastic rods, sheets and cones
… each other until the sheet buckles further. Cones and frusta are confined immediately without initial buckling. Physical experiments and finite element analyses are used to investigate and observe the confined buckling response, as well as to verify the analytical models derived to predict …
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Techniques for handling nonsymmetric cones in interior point algorithms
… of symmetric (self-dual and homogeneous) cones are amenable to highly efficient primal-dual interior point methods, which are implemented by many popular off-the-shelf conic solvers. On the other hand, many useful conic sets cannot be modeled exactly or can be modeled more efficiently …
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Free Surface Penetration of Inverted Right Circular Cones at Low Froude Number
In this thesis the impact of inverted cones on a liquid surface is studied. It is known that with the right combination of velocity, geometry, and surface treatment, a cavity of air can be formed behind an impacting body and extended for a considerable distance. Other investigators have shown that …
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Numerical methods for viscous fluid flows in sectors, cones, and domains with corners
… of the viscous fluid flows in infinite sectors, cones, and finite 2D domains with corners. The focus of the research was on the flow regimes near the corner, far from the corner (in case of sectors and cones), and in the transition zones. Efficient computational methods were developed for these …
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Full Newton Step Interior Point Method for Linear Complementarity Problem Over Symmetric Cones
… Complementarity Problem (LPC) over Symmetric Cones. The advantage of this method lies in that it uses full Newton-steps, thus, avoiding the calculation of the step size at each iteration. By suitable choice of parameters we prove the global convergence of iterates which always stay in the the …
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Distribution of Invasive Plant Species on Debris Cones at Mount Rainier National Park
… generated to observe where on the debris cones the invasive species are most successful at movement. This study improves understanding of how invasive plant movement is associated with geomorphic processes on the land surface, providing a mechanism for movement. Results identified two …
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From Pine Cones to Minimal Surfaces: The Geometry and Mechanics of Morphing Bilayers
Ubiquitous to nature, is an inherent ability to program form to fulfill function. In thin biological structures, such as leaves and plants, growth coupled with their slenderness, allows for a wealth of complex geometries to emerge. Underpinning this sophisticated phenomena is a problem of …
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Local Protein Turnover As a Regulatory Mechanism of Growth and Collapse of Neuronal Growth Cones
Der axonale Wachstumskegel reagiert außergewöhnlich empfindlich auf chemische und mechanische Umgebungseinflüsse, was lokale, autonome Reaktionen hinsichtlich der Wachstumskegel-Morphologie ermöglicht. Abhängig vom jeweiligen Stimulus kann Wachstum auf der einen Seite, oder Kollaps des …
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Boundary layer flows over sharp and spherically blunted cones at angle of attack to supersonic nonuniform free streams
… boundary layers on sharp and spherically blunt cones at angle of attack to nonuniform supersonic free streams. A three-dimensional boundary-layer solution is used to solve sharp cone problems and the afterbody of blunt cone problems. An axisymmetric boundary layer solution is used to solve the …
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Development of a numerical method to solve the three-dimensional compressible laminar boundary-layer equations with application to elliptical cones at angle of attack
… for some 10° vertical half-angle elliptical cones of varying ellipticity ratios at up to 8° angle of attack at a Mach number of 7.95 are presented. Skin friction and heat-transfer-rate distributions are presented for all cases. Good agreement has been found with experiment for the …
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Seed dispersal of western and Utah junipers: the role of scatter-hoarding rodents.
… avian and mammalian. Junipers produce female cones with a husk enclosing the seeds that closely resemble fruit, thus they are often referred to as berries. These cones differ among juniper species with some species producing very fleshy, resinous cones such as those of western juniper, …
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Axon Guidance Autonomy and Tensional Requirement for Synaptic Function: Is Learning a Forced Response
… neurons extend multiple processes whose growth cones exhibit different responses to their environment. In culture, detached growth cones display guidance autonomy, contain mRNA for cytoskeletal and other axonal components, and are capable of synthesizing protein locally. However, the extent to …
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A Connection Between Life and Art Through Light and Material
… or relationship with the work. The title 16 Cones refers to the largest number of color receptive optical cones that any creature on earth has. The mantis shrimp has sixteen color receptive cones as compared to the three that humans have. It is impossible to fathom what visual experiences …
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Symplectic toric stratified spaces with isolated singularities
… of two types of toric objects: symplectic toric cones and symplectic toric stratified spaces with isolated singularities. Both types of object are classified via orbital moment map and a second degree cohomology class. As symplectic toric stratified spaces with isolated singularities are locally …
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Analysis of Growth Cone Signaling During Axon Development in Drosophila Melanogaster
In addition, I demonstrated that growth cones expressing constitutively active Cdc42 that displayed guidance defects exhibited little change in their filopodial activity when compared to wild type, whereas others without guidance defects exhibited a significant increase. Moreover, the Y40C …
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