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 1020 for “"Extrinsic"”.
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Extrinsic/intrinsic motivational study
<p>The purpose of the study is to understand how extrinsic/intrinsic motivation will encourage student learning in a sixth grade learning setting. The drawing population was approximately 157 students. The sample of the study consisted of 43 sixth graders. The students were given pre-assessment and …
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TEXterity: Tactile Extrinsic deXterity
… introduces the concept of TEXterity (Tactile Extrinsic deXterity) to address challenges in robotic manipulation. Focusing on tactile sensing, TEXterity aims to enhance dexterity by enabling robots to perceive and act upon extrinsic contact between the grasped object and the environment. …
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Extrinsic Fabry-Perot Interferometric hydrogen gas sensor
… the detection of hydrogen gas using a modified Extrinsic Fabry-Perot Interferometric (EFPI) sensor are presented in this work. A new custom-designed, custom-built radio frequency (RF) magnetron sputtering system has been used to deposit thin films of palladium metal along with cylindrical …
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Ras Intrinsic and Extrinsic Pathways in Human Cancer
… was shown to promote tumorigenesis in an extrinsic fashion by increasing tumor vasculature, or angiogenesis. I noted that one of these cytokines hCXCL-8 (IL-8) belonged to the ELR+ CXC family of cytokines, suggesting that the entire family of ELR+ CXC cytokines may promote Ras driven …
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The split-cavity cross-coupled extrinsic fiber interferometer
… has been shown to have a high sensitivity. The extrinsic Fabry-Perot sensor (EFPI) is a very good candidate for smart structure applications. In this thesis, a new configuration of the extrinsic Fabry-Perot interferometer is developed and demonstrated. This new configuration, based on four-beam …
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Functional studies on the extrinsic proteins of Photosystem II
The function of the PsbO and the PsbR protein in Arabidopsis thaliana were studied. The Arabidopsis mutant psbo1 contains a point mutation in the psbO-1 gene leading to defective expression of the PsbO-1 protein. Functional studies demonstrated both the reducing-side and oxidizing-side of …
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Extrinsic Fabry-Perot interferometer for surface acoustic wave measurement
A surface acoustic wave sensor based on an extrinsic Fabry-Perot interferometer is described. A single-mode fiber, used as the input/output fiber, and a multimode fiber, used mainly as a reflector, form an air-gap that acts as a low-finesse Fabry-Perot cavity. The Fresnel reference reflection from …
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Increasing children's safety belt use: intrinsic versus extrinsic motivators
… different intervention activities applied either extrinsic rewards, or focused on the development of intrinsic motivation (e.g., personal commitment, awareness, active participation). The subjects were 138 children, aged five to eleven years, who attended five 30-min safety belt intervention …
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Extrinsic Fabry-Perot Interferometer System Using Wavelength Modulated Source
… thesis proposes a new measurement system for the extrinsic Fabry-Perot interferometer (EFPI) sensor. Using a wavelength modulated source and a novel extended-gap EFPI, some of the limitations of interferometric signal demodulation are overcome. By scanning the output wavelength of a …
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Epigenetic Regulation Controls Intrinsic and Extrinsic Drivers of Gastrointestinal Development
… I investigated how epigenetic forces control extrinsic regulators of lineage fate decisions, specifically intercellular communication. Here, I show that mesenchymal cells control epithelial fate and function through Polycomb Repressive Complex 2 (PRC2)-mediated chromatin bivalency. While key …
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Intrinsic and Extrinsic Motivation: Abraham Lincoln as an Adult Learner
… the research is concerned with intrinsic versus extrinsic motivation and autonomous versus non-autonomous learning environments. The data suggests that learning and performance are often significantly enhanced in autonomy-supportive environments that foster intrinsic motivational perspectives. …
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The relationship between intrinsic/extrinsic religiosity and meaning in life
… a significant relationship between intrinsic and extrinsic religiosity and the presence of and search for meaning in one's life. Since religion has previously been found to play a role in one's physical and mental health, the present study offers additional evidence to religion's role in the …
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Extrinsic and Intrinsic Factors Controlling Reproduction in an Annual Plant
The objectives of the study were to (1) determine what factors limit fruit and seed production in the annual legume Cassia fasciculata Michx., and (2) determine the extent of and basis for selective fruit maturation in this plant species. Cassia fasciculata is an herbaceous plant that inhabits …
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Reducing extrinsic damping of surface acoustic waves at gigahertz frequencies
High-frequency surface acoustic waves (SAWs) in the GHz range can be generated using absorption from an ultrafast laser in a patterned metallic grating on a substrate. Reducing the attenuation at these frequencies can yield better sensors as well as enable them to better probe phonon and …
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Extrinsic regulation of fate choice in mouse haematopoietic stem cells
Extrinsic regulation of fate choice in mouse haematopoietic stem cells The mechanisms regulating stem cell self-renewal, proliferation, and differentiation are still not fully understood. Improving our knowledge of these processes will not only provide greater insight into stem cell biology but …
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Steklov geometry processing : an extrinsic approach to spectral shape analysis
… using the Dirichlet-to-Neumann operator as an extrinsic alternative to the Laplacian for spectral geometry processing and shape analysis. Intrinsic approaches, usually based on the Laplace-Beltrami operator, cannot capture the spatial embedding of a shape up to rigid motion, and many previous …
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High-finesse/small gap extrinsic Fabry-Perot interferometer and applications
… a broadband light source, high-finesse/small-gap extrinsic Fabry-Perot cavity, and a novel demodulation scheme is proposed. The principle of operation is based on the large spectral displacement of an intensity peak, in the transmitted output pattern, due to minute changes in cavity length of a …
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Intrinsic and Extrinsic Catalysis in Zirconium-based Metal-Organic Frameworks
Metal-organic frameworks (MOFs) are a class of hybrid materials that offer a promising platform for a range of catalytic reactions. Due to their complex structure, MOFs offer unique opportunities to serve as novel catalysts, or as host to improve the properties of previously studied species. …
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