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 17 of 17 for “"independent channels"”.
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Unique Image Representation as a Tensor
… that represents an image as coefficients in 4 independent channels. The salient feature of these coefficients is that they contain complete position spatial frequency information about the image, in a sense that the original image can be reconstructed from these coefficients with negligible …
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Characteristics and usefulness of interfascicular contacts in peripheral nerve recording
… signal-to-noise ratio and (2) provides as many independent channels of neural information as possible. We investigated the usefulness of novel interfascicular electrodes in acute experiments on the rabbit sciatic nerve (n = 4). Directed interfascicular contacts were found to record compound …
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Dual Wi-Fi: Dual Channel Wi-Fi for Congested WLANs with Asymmetric Traffic Loads
… downlink data traffic into two variable-width independent channels, each allocated in accordance to the network's traffic demand. Our experimental and simulation results demonstrate that Dual Wi-Fi matches downlink vs. uplink throughput ratio to demand ratio within 1\% under any client density …
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Mechanistic investigation of coordinated conformational changes in multisubunit ion channels and enzymes
Many enzymes and ion channels consist of multiple subunits and/or multiple distinct functional components. Coordinated conformational changes through allosteric interactions between subunits and/or between functional units can efficiently regulate protein activity. This dissertation describes …
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Approximation techniques in network information theory
… still behaves like a pair of separate independent channels. The third contribution is a study of the finite-blocklength source coding problem with side information available at both the encoder and the decoder. It is found that the rate of convergence to the Shannon limit is governed by …
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The plasticity of the human perceptual systems in processing auditory- and spatial-frequencies
… processes spatial patterns through a series of independent channels, each functioning as a band-pass filter centred around a specific spatial-frequency and thus tuned to a sinusoidal pattern of that frequency. The main property to be determined for each selective channel is its width on the …
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Non-linear optical properties of semiconductor nano-structures for slow light and wavelength conversion
… conversion of both single and multiple optical channels, and compare the results to cross-gain modulation in the same device. Our results show that four-wave mixing provides efficient, high-speed wavelength conversion in up to four, independent channels, and at speeds up to 40 GHz. Using a …
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Parallel radiofrequency transmission for 3 Tesla and 7 Tesla magnetic resonance imaging
… of RF pulses transmitted from multiple independent channels simultaneously. However, both the RF pulse design and RF safety management become more complicated with pTx. In this work, a framework to apply pTx to 3T fetal and 7T brain imaging is developed to address the image shading and …
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Lab-on-cell and cantilever-based sensors for gene analysis
… compartments, integrated microfluidics based on independent channels and nanostructured titanium dioxide (ns-TiO2) functionalized electrodes. Different activities have been reported, from the study of the microfabrication substrates bioaffinity and device development to the electroporation …
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Local and global SAR constrained large tip angle 3D kT̳-points parallel transmit pulse design at 7 T
… Parallel transmit (pTx) systems with multiple independent and simultaneous RF transmit channels achieve transmit field inhomogeneity mitigation with practical pulse duration, but with potentially higher deposition of RF energy as measured by the specific absorption rate (SAR). In addition, RF …
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Specialized Signals for Spatial Attention in the Ventral and Dorsal Visual Streams
… LIP sums disparate signals, but as a consequence independent channels of spatial information exist for attention and response planning. PITd represents relevant locations and, rather than summing signals, contains a single map for covert attention. Our findings have the potential to resolve a …
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Il ruolo del collicolo superiore nell'orientamento spaziale
… that the redundant auditory and visual channels are independent. Conversely, with red long-wavelength stimuli, visible to the SC, the RTs distribution was related to nonlinear neural summation, which constitutes evidence of integration of different sensory information. We also …
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Three essays on market transparency
… congestion. The stock data are handled by six independent channels in the NASDAQ based on alphabetic order of ticker symbols. The essay documents abnormally high levels of co-movement of message flows for stocks in the same channel using factor regression, a discontinuity test and diff-in-diff …
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Design and investigation of a novel 𝝿-configuration spr sensor for multi-parameter biosensing applications.
… geometric architecture, which features two independent, adjacent sensing arms on a single optical fibre. Through comprehensive three-dimensional Finite Element Method (FEM) simulations in COMSOL Multiphysics, this work establishes the ϖ-sensor's core optical performance. The ϖ-configuration …
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Shedding light on the molecular interactomes of fast, complex biological processes using multispectral imaging with uncompromised spatiotemporal resolution
… resolution as labels are imaged sequentially in independent channels. These compounding issues drastically limit our understanding of highly-dynamic, complex biological processes, for instance, endosomal receptor sorting. This process occurs within a few seconds and is regulated by tens, or …
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Exploring the molecular mechanisms of AMPK-dependent regulation of neuroexcitability
… homeostasis, such as receptors, and ion channels, thus modulating cellular functions in a cell-specific manner. This thesis aimed to examine the effect of AMPK activation on two distinct ion channels: human TWIK-related acid-sensitive potassium (hTASK-3) channels and murine …
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Precizní laboratorní napájecí zdroj
Tato diplomová práce se zabývá návrhem precizního dvoukanálového laboratorního zdroje s rozsahem výstupního napětí od 0 do 30 V a nastavitelným proudovým omezením do 1 A. Navržené řešení je založeno na využití lineárních stabilizátorů a systému přepínání vstupního napětí k minimalizaci ztrátového …