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 14 of 14 for “"Spectral approach"”.
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A spectral approach for noninvasive estimation of intracranial pressure
… available. This work expands upon a model-based spectral approach to estimate ICP from arterial blood pressure (ABP) and cerebral blood flow velocity (CBFV) measurements. To support such ICP estimation, we developed a data acquisition system to archive high quality, high resolution waveforms from …
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A spectral approach to noninvasive model-based estimation of intracranial pressure
… on a previously proposed model-based time-domain approach to noninvasive, patient-specific and continuous estimation of ICP using routinely measured waveforms that has been validated on patients with traumatic brain injuries. Here, we present a model-based algorithm to estimate ICP using the …
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Spectral approach for improving the Ill-conditioning of the method of fundamental solutions
… a nova base, partindo de uma representação espectral da solução fundamental, e utiliza a decomposição em valores singulares para realizar a mudança de base. As ilustrações apresentadas em [12] mostram que o método é extremamente eficaz no caso da equação de Laplace a duas dimensões, …
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A Spectral Approach to Noninvasive ICP Estimation: From Modeling to Clinical and Experimental Validation
… limited to critically ill patients. We present a spectral approach to model-based noninvasive ICP estimation, relying on a second-order circuit model of cerebrovascular physiology. We estimate ICP in the frequency domain, from arterial blood pressure and cerebral blood flow velocity waveforms. …
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Elucide
… compositional methods that are central to the spectral approach to composition, established by such composers as Gérard Grisey, Tristan Murail, and Hugues Dufourt. This musical genre is characterized by a focus on the acoustic properties of sound, a concern that is typically reflected both in …
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On the Generation and Applications of Localized Waves
… fields are derived using a vector-valued spectral approach. Third, all reported experiments dealing with the generation of localized waves are discussed and a concise report on field depth measurements, together with practical implications, is presented. Fourth, new methods for generating …
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Time Spectral Adjoint Based Design for Flutter and Limit Cycle Oscillation Suppression
… and its sensitivity. However, this approach is only applicable for linear or linearized models and cannot be applied to systems undergoing LCO or other nonlinear effects. Though the time accurate approach can be implemented to overcome this problem, it is computationally expensive. …
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Transient and Spectral Fatigue Analysis for Random Base Excitation
… estimate the fatigue damage using transient and spectral fatigue analysis for both uniaxial and multiaxial stress states in case of random vibration base excitation. The transient method involves a rainflow count algorithm that counts the number of cycles causing the fatigue damage, while the …
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Efficient nonparametric inference for discretely observed compound Poisson processes
… In related literature, two apparently different approaches have been taken: a natural direct approach, and the spectral approach we use. We show that these are formally equivalent and that the existing estimators are very close relatives of each other. However, those from the first approach can …
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The Spectral Model of Grain Boundary Solute Segregation
… of nanocrystalline alloys. To date, the standard approach to predict the extent of solute segregation at GBs uses a simplified representation that treats the GB network as a single entity, and thus, uses a single “average” segregation energy to characterize solute GB segregation in an alloy. This …
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Terrestrial laser scanning to characterise three-dimensional foliage and woody material distributions in trees
… Previous studies have suggested that using spectral information to distinguish foliage from wood materials is unlikely to provide an accurate classification on its own. In this thesis, a spectral approach was designed based on the frequency distribution of the reflectance and spectral ratios …
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A Portfolio of original compositions (Barry O'Halpin)
… absorbed into my practice using a post-spectral approach. Existing spectral methods are first adapted with relative austerity into the compositional interplay of manuscript, Logic audio demo, Pure Data, Sibelius score and instrumental improvisation. The chamber quintet Difference Fumes …
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Méthodes avancées d'évaluation des charges de vent sur les structures de concentrateurs solaires
… dynamique mesurée en cohérence avec la méthode spectrale stochastique ; (c) Étude des effets des configurations structurales et des paramètres de vent sur l’optimisation de structure solaires sous charges de vent. Cette étude paramétrique a mis en évidence l’importance de l’effet des paramètres …
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Monitoring of Plant Chlorophyll and Nitrogen Status Using the Airborne Imaging Spectrometer AVIS
Airborne hyperspectral remote sensing enables not only spatial monitoring of vegetation cover, but also the derivation of individual plant constituents such as chlorophyll and nitrogen content. These are important parameters for optimised agricultural management on a field basis through the …