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GTETD 檢索結果共 3958 筆,本頁資料從第 61 筆到第 72 筆

Dissimilatory iron reduction (DIR) is significant to the biogeochemical cycling of iron, carbon and other elements, and may be applied to bioremediation of organic pollutants, toxic metals, and radionuclides; however, the mechanism(s) of DIR and factors controlling its kinetics are still unclear. To provide insights into these questions, the interaction between a common....

By Mengni Zhang--GIT--2010-11-17
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In visually guided control of a robot, a large residual problem occurs when the robot configuration is not in the neighborhood of the target acquisition configuration. Most existing uncalibrated visual servoing algorithms use quasi-Gauss-Newton methods which are effective for small residual problems. The solution used in this study switches between a full quasi-Newton m....

By Jomkwun Munnae--GIT--2010-11-17
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Future ambitious solar system exploration missions are likely to require ever larger propulsion capabilities and involve innovative interplanetary trajectories in order to accommodate the increasingly complex mission scenarios. Two recent advances in trajectory design can be exploited to meet those new requirements: the use of low-thrust propulsion which enables larger ....

By Gregory Lantoine--GIT--2010-11-16
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The goal of the work presented was to further understand how both the body and dendritic cells (DCs) interact and respond to biomaterials through receptor-mediated mechanisms. The role of Toll-like receptor 4 (TLR4) was investigated in the host response to biomaterials, and it was found that TLR4-deficient mice (in comparison to wild-type) had a delayed acute inflammato....

By Todd H Rogers--GIT--2010-11-15
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This thesis is focused on airport departure operations; its objective is to assign a value to surface surveillance information within a collaborative framework. The research develops a cooperative concept that improves the control of departure operations at busy airports and evaluates its merit using a classical and widely accepted airport departure model. The research ....

By Pierrick Antoine Burgain--GIT--2010-11-15
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We consider a simple one-dimensional random dynamical system with two driving vector fields and random switchings between them. We show that this system satisfies a one force - one solution principle and compute its unique invariant density explicitly. We study the limiting behavior of the invariant density as the switching rate approaches zero and infinity and derive a....

By Tobias Hurth--GIT--2010-11-15
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This thesis considers the design and analysis of humanitarian supply chains, by which we mean those systems that deliver goods and services in response to natural or man-made disasters as well as ongoing public health challenges. In the first part of the thesis, we introduce a class of problems motivated by humanitarian logistics systems with decentralized decision make....

By Jessica L. Heier Stamm--GIT--2010-11-15
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An inverted base pavement is a new pavement structure that consists of an unbound aggregate base between a stiff cement-treated foundation layer and a thin asphalt cover. Unlike conventional pavements which rely on upper stiff layers to bear and spread traffic loads, the unbound aggregate inter-layer in an inverted base pavement plays a major role in the mechanical resp....

By Douglas D. Cortes Avellaneda--GIT--2010-11-15
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Many biological systems are known to accomplish complex tasks in a decentralized, robust, and scalable manner - characteristics that are desirable to the coordination of engineered systems as well. Inspired by nature, we produce coordination strategies for a network of heterogenous agents and in particular, we focus on intelligent collective systems. Bottlenose dolphins....

By Musad Al Haque--GIT--2010-11-15
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Extreme scale data management in high performance computing requires consideration of the end-to-end scientific workflow process. Of particular importance for runtime performance, the write-read cycle must be addressed as a complete unit. Any optimization made to enhance writing performance must consider the subsequent impact on reading performance. Only by addressing t....

By Gerald Fredrick Lofstead--GIT--2010-11-15
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The quantum properties of matter waves, in particular quantum correlations and entanglement are an important frontier in atom optics with applications in quantum metrology and quantum information. In this thesis, we report the first observation of sub-Poissonian fluctuations in the magnetization of a spinor 87Rb condensate. The fluctuations in the magnetization are redu....

By Eva M. Bookjans--GIT--2010-11-15
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This dissertation focuses on quantitative subsurface and mechanical properties imaging potential of AFM probes. Extensive modeling of AFM probes are presented for thorough understanding of capabilities and limitations of current techniques, these models are verified by various experiments, and different methods are developed by utilizing force-sensing integrated read-ou....

By Zehra Parlak--GIT--2010-11-15
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