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.
Results
Showing 1 to 17 of 17 for “"Bottom-up processes"”.
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ERP correlates of the interactions between top-down and bottom-up processes in visual object categorization
… have been suggested for the underlying processes of such category differences. Both low-level physical differences and higher-level category-specific processes have been shown to modulate the visual ERPs. The present research investigates how physical features (such as amplitude spectrum …
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The absence of cradling bias in autism spectrum disorders: illustrating deflicits in basic empathis processes
… to others. Impairments in both top-down and bottom-up processes involved in relating are implicated, as these individuals experience difficulties in relating to others on both a cognitive and a visceral level. Research focussing on their more basic difficulties with social reciprocity (i.e., …
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Towards trainable man-machine interfaces : combining top-down constraints with bottom-up learning in facial analysis
… man-machine interfaces by combining top-down and bottom-up processes in vision. From a computational perspective, we propose that the scientific-cognitive question of combining top-down and bottom-up knowledge is similar to the engineering question of labeling a training set in a supervised …
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Robotic Fabrication Workflows for Environmentally Driven Facades
… have been left behind and architectural design processes have not evolved at the same rate. This research presents design to fabrication workflows that explore data driven design to improve performance of facades, implementing for this purpose computational tools to handle environmental data …
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Fabrication of Fluorescent Nanoprobes and Their Applications in Nanophotonics
… fluorescent elements are produced through bottom-up processes such as chemical synthesis, we can easily tailor the functionalities of such fluorescent nanoprobes to many different applications in nanophotonics, including near field imaging, nonlinear optics mapping, and quantum …
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One step ahead: Investigating the influence of prior knowledge on the perception of others’ actions
… own motor system, emphasising the importance of bottom-up processes during social perception. However, more recent theories suggest that instead we actively anticipate others actions based upon intentions inferred outside of the motor system, from social cues such as language, eye gaze and object …
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Local governments' changing power in South Africa's energy system: reshaping the regulatory space for renewable energy, from the bottom up
… configuration of power showed signs of disruption. Municipalities began to ambitiously redefine their role by building on opportunities related to renewable energy, resulting in an emergent challenge to centralised energy policy and planning. This dissertation sought to explore how this …
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Understanding expressive action
… a novel vision framework that has no completely bottom-up processes, and is therefore significantly faster and more stable than other approaches.
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A connectionist explanation of presence in virtual environments
… sources: the perceptual modalities of the user (bottom-up processes), and the mental state of the user (top-down processes). These two basic sources of input competitively spread activation to a central layer which competitively determines which behaviour script will be applied to regulate …
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Task Switching in Predictable and Unpredictable Cases
… to provide evidence regarding the cognitive processes that underlie the switching between simple cognitive tasks. Central to these experiments was the predictability factor; in half of the cases, the upcoming task could be predicted in advance with absolute certainty while in the other half …
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Determinants of predator abundance in northern KwaZulu-Natal: top-down or bottom-up?
… of their population change is critical. Both bottom-up (e.g. food limitation, competition) and top-down (e.g. predation, interference) processes play an important role in structuring predator guilds, yet there is a poor understanding of their relative importance. Here, I investigated whether …
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Anti-solvent precipitation and subsequent film formation of hydrophobic drugs for drug delivery
… properties can be challenging. In recent years, bottom up processes have emerged as methods for the synthesis of drug particles for hydrophobic drugs. As many hydrophobic drugs are soluble in various water miscible organic solvents, an effective approach is the precipitation of fine particles …
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Predictive inference in reading comprehension: What can biased judgments inform us about information processing in the brain?
… task in daily life, requires the engagement of bottom-up and top-down processes in a dynamical way to speed-up processing of incoming information and make decisions about current and future expectations about the meaning of the text. Studies on lexical or syntactic ambiguity resolutions have …
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Enhancing the relationship between the landscape of energy transition and the ecosystem services
… prices of oil and the uncertainty on the future supply of fossil fuels open new challenges for communities to actuate an energy transition towards RES. The RET can afflict deeply the landscape structure and by this point of view the energy transition is one of the most relevant drivers in the …
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Effects of ash from native and alien plants on phytoplankton biomass and mosquito abundances: A mesocosm experiment
… but have the potential to significantly impact bottom–up processes and effects on semi–aquatic taxa such as mosquitoes. This study assessed (i) ash–water–phytoplankton biomass dynamics and (ii) post–colonization mosquito abundances using six plant species [i.e., three natives (apple leaf …
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FACTORS INFLUENCING THE SPATIAL AND TEMPORAL STRUCTURE OF A CARNIVORE GUILD IN THE CENTRAL HARDWOOD REGION
… are most commonly structured by a mixture of bottom-up processes such as habitat or prey, competition within the same trophic level, and top-down forces from higher trophic levels. Carnivore guilds play a vital role in the broader ecological community by stabilizing or destabilizing food webs. …