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VTETD 檢索結果共 19439 筆,本頁資料從第 37 筆到第 48 筆

Little is known about the complex processes leading to prosocial behavior. However, theories suggests that empathy, empathic responding, and emotion regulation abilities, may all contribute to the presence or absence of prosocial behavior. While theoretical papers demonstrate relationships between these constructs, researchers to date have only focused on small aspects ....

By Haley Gordon-Psychology-VT-masters-2014-12-29
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Forest measurements are inherently spatial. Soil productivity varies spatially at fine scales and tree growth responds by changes in growth-age trajectories. Measuring spatial variability is a perquisite to more effective analysis and statistical testing. In this study, current techniques of partial redundancy analysis and constrained cluster analysis are used to explor....

By Gavin Richard Corral-Statistics-VT-masters-2014-12-16
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Of all of the bodies in the solar system, Europa is perhaps the most enticing. Based on several lines of evidence, Europa, a moon of Jupiter, is believed to have an ocean of liquid water beneath several kilometers of ice. This ocean is likely in contact with Europaâs rocky core, making Europaâs ocean one of the most likely places for life to exist in the solar system ....

By David William Allen-Aerospace and Ocean Engineering-VT-masters-2014-11-20
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This thesis presents a simulation model of sliding process of friction, which combines Newtonian particle dynamics and finite element method to study friction mechanisms that bridging micro and macro scales. In the thesis, it first reviews the importance of studying pavement friction that is associated to safety of drivers, society economics and environmental impact. Th....

By Xinfei Wang-Civil Engineering-VT-masters-2014-11-13
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In particle image velocimetry (PIV) the measurement signal is contained in the recorded intensity of the particle image pattern superimposed on a variety of noise sources. The inherent amount of signal mutual information between consecutive images governs the strength of the resulting PIV cross correlation and ultimately the accuracy and uncertainty of the produced PIV ....

By Zhenyu Xue-Mechanical Engineering-VT-masters-2014-10-20
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Visual perception theory distinguishes between two distinct levels of object processing: holistic, based on global shape, and configural, based on local features and/or component parts. Empirical evidence suggests that different cortical regions may support these levels; holistic processing correlates with activation in the lateral occipital-temporal cortex (LOC), where....

By Stephanie Marie Roldan-Psychology-VT-masters-2014-10-16
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Heart disease is one of the primary causes of morbidity and mortality for the adult population over the age of 65. Furthermore, ailments such as hypertension can affect as many as 50% of the adult population over the age of 45. If left untreated, these ailments eventually precipitate the onset of diastolic dysfunction and heart failure. Diastolic dysfunction is the alte....

By Brett Albert Meyers-Mechanical Engineering-VT-masters-2014-09-18
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Oppositional Defiant Disorder (ODD), characterized by irritability and defiant behavior, is associated with several negative outcomes in childhood and adulthood (APA, 2000; Webster- Stratton, 1996). There are a variety of approaches to treating ODD that differ in their focus on parents, children, or both parent and child (Greene & Ablon, 2005; Kazdin, 2005). These treat....

By Rachel Lynn Miller-Psychology-VT-masters-2014-07-18
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This thesis provides insight into state-of-the-art 1.2 kV silicon carbide (SiC) power semiconductor transistors, including the MOSFET, BJT, SJT, and normally-on and normally-off JFETs. Both commercial and sample devices from the semiconductor industryâs well-known manufacturers were evaluated in this study. These manufacturers include: Cree Inc., ROHM Semiconductor, Ge....

By Christina Marie DiMarino-Electrical and Computer Engineering-VT-masters-2014-06-30
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Digital Signal Processing has been dominated by the Fourier transform since the Fast Fourier Transform (FFT) was developed in 1965 by Cooley and Tukey. In the 1980âs a new transform was developed called the wavelet transform, even though the first wavelet goes back to 1910. With the Fourier transform, all information about localized changes in signal features are sprea....

By Karlton Wirsing-Electrical and Computer Engineering-VT-masters-2014-06-30
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The world of high-performance computing has shifted from increasing single-core performance to extracting performance from heterogeneous multi- and many-core processors due to the power, memory and instruction-level parallelism walls. All trends point towards increased processor heterogeneity as a means for increasing application performance, from smartphones to servers....

By Robert Frantz Lyerly-Electrical and Computer Engineering-VT-masters-2014-06-24
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Episodic memory refers to context based explicit memory and shows vast improvements during middle childhood. In this study, episodic encoding was manipulated using stimuli that were hypothesized to require active or passive processing. Nine to eleven-year-old children were presented with a recall task using lower resolution (active processing) and clear (passive process....

By Tashauna L. Blankenship-Psychology-VT-masters-2014-06-13
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