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 18 of 18 for “"approximant"”.
-
Investigating sources of phonological rarity and instability: a study of the palatal lateral approximant in Brazilian Portuguese
… palatal lateral against the palatalized lateral approximant, alveolar lateral approximant, palatal approximant, palatal nasal, palatalized nasal, and alveolar nasal. Study 2 analyzes the acoustics of the palatal lateral in comparison to the palatalized lateral approximant, alveolar lateral …
-
Additive Lebesgue-Type Inequalities for Greedy Approximation
… commonly interested in finding a best possible approximant to a function (also thought of as a signal or an image in signal processing) from a collection of a given number of elements. In the recent years, there arose an interest in considering rich collections of elements, such as frames, …
-
Characterization of novel microstructures in Al-Fe-V-Si and Al-Fe-V-Si-Y alloys processed at intermediate cooling rates
… quasicrystalline (QC) phase (it is a QC approximant) and a further relationship to the more desirable α-Al12(Fe/V)3Si phase, which is also a QC approximant. The analysis confirmed the findings of earlier studies in this system, which suggested the same structural relationships using …
-
A Comparative Variationist Analysis of Phonetic Variation and Change in Toronto Heritage Tagalog
… /p t k/ and the realization of the rhotic as an approximant show signs of change. While the change in VOT may be attributed to contact with English (the heritage speakers’ majority language), the change in the use of the approximant reflects an interplay between contact with English as well as …
-
Mollified piecewise polynomial approximants of arbitrary order and smoothness
… each polytope, an independent local polynomial approximant of arbitrary order is assumed. The basis functions are defined as the convolution of the local approximant with a mollifier. The mollifier is chosen to be smooth, have a compact support and a unit volume. The approximation properties of …
-
Multivariable Adaptive Control
… law is shown to converge when a certain approximant of the left structure matrix, /i.e./, the system invariant is known. This result relaxes a result by Elliott /et al./ where the interactor is required to be known.The important question of stability of adaptive systems is also treated. …
-
Navigating the Intermetallic Landscape: From Quasicrystal Approximants to High Pressure Crystal Chemistry
… Laves phases, and a decagonal quasicrystal approximant. Their formation and bonding is understood through comprehensive analysis of their electronic structure using density functional theory. Similarly, it is possible to add further complexity by applying external pressure, opening up the …
-
Banach Spaces of Analytic Vector-valued Functions
… weighted sup-type constraint on the size of the approximant. This involves the development of a suitable theory of vector-valued L°° and H°° functions on T, taking values in an arbitrary Banach space equipped with a separable predual. We establish existence of a solution under mild assumptions, …
-
Effects of cultivar, leaf position, and stem tissue on growth of single-leaf cuttings of Ipomoea Batatas Lam
… in both experiments. Mean leaf positions 2 approximant net assimilation rate (NAR) values based on leaf and new shoot dry weight exceeded mean leaf positions 8 approximate NAR values in both experiments. Plants with stem attachment had higher new shoot and storage root dry weights than …
-
Sparse Approximation In Banach Spaces
… in the context of methods of finding the best approximant from a subspace, or by statisticians concerned in finding good regressions. Recently, a new field of applied mathematics, Compressive Sensing, emerged. It gathered mathematicians, statisticians, electrical engineers, computer scientists, …
-
Towards efficient three-dimensional wide-angle beam propagation methods and theoretical study of nanostructures for enhanced performance of photonic devices
… dissertation, we have proposed a novel class of approximants, the so-called modified Padé approximant operators for the wide-angle beam propagation method (WA-BPM). Such new operators not only allow a more accurate approximation to the true Helmholtz equation than the conventional operators, but …
-
Stability and robustness of adaptive controllers for underactuated Lagrangian systems and robotic networks
… bound for the delay robustness using a Pad\'{e} approximant is proposed. The results show that the minimum delay that destabilizes the system, which may also be estimated by forward simulation, is always larger than the value computed by the proposed method. The control framework is extended to …
-
An analysis of /r/ variation in Singapore English
… auditory and acoustic distinctions are found in approximant /r/, reflecting both the phonetic complexity of /r/ and the multifaceted nature of SgE. Additionally, supportive evidence for the presence of innovative trends in SgE /r/ realisation (i.e. labiodental /r/) and of fading ones (i.e. …
-
Convergence of Kernel Methods for Modeling and Estimation of Dynamical Systems
… of the RKHS embedding method is based on approximant spaces that consist of kernel basis functions centered at samples in the state space. This dissertation shows that explicit rate of convergence of the RKHS embedding method can be derived by choosing specific types of native spaces. In …
-
When Synchrony Meets Diachrony: (Alveolo)Palatal Sound Patterns in Spanish and other Romance Languages
… of (alveolo)palatal lateral, obstruent, and approximant sounds in Spanish, with further evidence from other Romance languages, such as Portuguese, French, Italian, Rumanian, Galician, and Catalan, among others. These sounds are interconnected in their manifestations across Spanish dialects, …
-
Applications of almost periodic functions and equivalent nonlinearities to identification and control of nonlinear systems
… emphasis on techniques or obtaining the linear approximant to a nonlinear system. A crosscorrelation method is also discussed which appears to be unrelated to the Volterra approach. This technique uses a 4-level test signal and is the subject of detailed analysis in later chapters. The 4-level …
-
Speech sound acquisition and phonological error patterns in child speakers of Syrian Arabic: a normative study
… acquisition in terms of sound class was: median approximants > nasals > plosives > the lateral approximant /l/ > all fricatives except/ʒ/ > the trill. The findings also showed that the order of speech sound acquisition in Syrian children is very similar to that in children from other language …
-
Une méthode de couplage éléments finis-conditions absorbantes de type-padé pour les problèmes de diffraction acoustique
… absorbantes d'ordre élevé basées sur les approximants complexes de Padé. A travers une série d'expériences numériques, nous montrons l'efficacité de ces conditions absorbantes en comparaison avec les conditions absorbantes de Bayliss-Gunzburger-Turkel d'ordre deux implémentées dans les …