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 11 of 11 for “"SPCA"”.
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SPCA and regucalcin: expression, activity and regulation in Ca2+ homeostasis
The secretory pathway Ca\(^{2+}\)-ATPase (SPCA) provides the Golgi apparatus with a luminal Ca\(^{2+}\) store, which is used to modulate the activity of Ca\(^{2+}\)-dependent enzymes involved in controlling the secretory pathway and post-translational modification of proteins. This Ca\(^{2+}\) …
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On the equivalence of sparse statistical problems
… setting. Sparse Principal Component Analysis (SPCA) and Sparse Linear Regression (SLR) are two problems that have a wide range of applications and have attracted a tremendous amount of attention in the last two decades as canonical examples of statistical problems in high dimension. A variety …
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New optimization approaches to matrix factorization problems with connections to natural language processing
… the sparse principal component analysis (SPCA) problem. We propose a tailored branch-and- bound algorithm, Optimal-SPCA, that enables us to solve SPCA to certifiable optimality.
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Hyperspectral Imagery for Precision Agriculture
… the hybrid feature reduction approach was the GA-SPCA algorithm (Genetic Algorithm-based Selective Principal Component Analysis). In the initial experiments, the coefficients of correlation between an image and ground reference data were greater when using GA-SPCA than using standard PCA. To …
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Tensors, sparse problems and conditional hardness
… problems: Sparse Principal Component Analysis (SPCA) and Sparse Linear Regression (SLR). We show how to efficiently transform a blackbox solver for SLR into an algorithm for SPCA. Assuming the SLR solver satisfies prediction error guarantees achieved by existing efficient algorithms such as …
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Autoencoder, análise via componentes principais e independentes aplicados no reconhecimento de padrões de populações
… esparsa da Análise via componentes Principais (SPCA) e Análise via Componentes Independentes (ICA). Outra técnica em destaque é a metodologia que combina os métodos PCA e ICA que é denominada Análise via Componentes Principais Independentes (IPCA), mas ainda pouco utilizada em banco de dados …
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Animal welfare in South Africa : a multi-component programme design
… living in the Darling community, the Swartland SPCA approached the evaluator in order to design a plausible humane education programme. The evaluator began this research by reviewing the history and underlying principles of humane education, the efficacy of humane education, as well as …
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Enhancing electricity auction mechanism with FACTS devices
… The auction scheme in this work is double-sided SPCA (single period commodity auction). The auction problem is formulated in a linear form and can be solved by LP (linear programming). Recent advances in the power electronics field bring the FACTS (flexible AC transmission system) devices and …
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Resource allocation and secure communication design in simultaneous wireless information and power transfer systems
… the sequential parametric convex approximation (SPCA) method. Furthermore, the proposed optimization problem is extended to the imperfect CSI case. Third, a secure communication case is studied in an underlay multiple-input multiple-output (MIMO) cognitive radio (CR) network where the secondary …
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Harness Electricity, Free the Mules: Animal Rights and the Electrification of the Streetcars in New Orleans
<p>Prior to the streetcar lines being electrified in the late 1800s, equines pulled the cars. The quadrupeds that pulled the horsecars in New Orleans, Louisiana, were area specific: New Orleans had mules, not horses. The mule in the South is typically associated with the rural South; however, in …
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Erfassung von Vegetationsveränderungen in Namibia mit Hilfe von Fernerkundungs-Change-Detection-Verfahren und unter Berücksichtigung rezenter Niederschlagsereignisse
… modifizierte selektive Hauptkomponentenanalyse (sPCA) dar. Um auch Formparameter der veränderten Flächen zur Unterscheidung von Veränderungstypen heranziehen zu können, wurden die Ergebnisse des Differencings segmentiert und das Maß der Kompaktheit(Compactness) der Segmente extrahiert. Die …