Methods And Methodology
Mostrando 1-12 de 1370 artigos, teses e dissertações.
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1. Quimiometria III - Revisitando a análise exploratória dos dados multivariados
In this work, three methods for pattern recognition, used as exploratory data analysis, are revisited. A brief review of principal component analysis, PCA, an unsupervised method, is provided. Next, the Mahalanobis distance and the confidence ellipses usually drawn around the scores samples are discussed. Fisher’s canonical variate analysis (a supervised m
Química Nova. Publicado em: 2022
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2. Methodology for evaluation of the influence of roughness and capillary absorption of ceramic blocks on the render’s tensile bond strength
Abstract The literature indicates that it is difficult or even impossible to associate with strong statistical confidence the bond strength of a mortar coating with the properties of the ceramic block, such as roughness and water absorption. In this work, it is assumed that the variability in capillary water absorption and roughness, and the use of methods t
Cerâmica. Publicado em: 2022
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3. A Green Analytical Method Using Polyurethane Foam for The Extraction and Determination of Lauryl Ether Sulfate in Personal Care Hygiene Products
A green methodology was developed for the extraction and determination of lauryl ether sulfate in raw materials and commercial liquid soap and shower gel samples. The method avoids the use of organic solvents, offering a simple, cheap, and safe analysis. The methodology is based on the sorption of an ionic pair consisting of a cationic dye and an anionic sur
Journal of the Brazilian Chemical Society. Publicado em: 2022
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4. Assessment of Covariance Selection Methods in High-Dimensional Gaussian Graphical Models
ABSTRACT The covariance selection in Gaussian graphical models consists in selecting, based on a sample of a multivariate normal vector, all those pairs of variables that are conditionally dependent given the remaining variables. This problem is equivalent to estimate the graph identifying the nonzero elements on the off-diagonal entries of the precision mat
Trends in Computational and Applied Mathematics. Publicado em: 2022
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5. Comparison of ultrasonography learning between distance teaching and traditional methodology. An educational systematic review
ABSTRACT BACKGROUND: Use of the web for radiological education is an obvious application. Many computer-based teaching materials have been developed over recent years, and e-learning is becoming increasingly popular in medical schools. OBJECTIVE: To assess whether the effectiveness of distance-learning and/or e-learning, m-learning and web-based methods ar
Sao Paulo Medical Journal. Publicado em: 2022
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6. Coexisting Coronary and Carotid Artery Disease: What We Did, What Happened
ABSTRACT Introduction: There is no complete consensus on the three surgical methods and long-term consequences for coexisting coronary and carotid artery disease. We retrospectively evaluated the surgical results in this high-risk group in our clinic for a decade. Methods: Between 2005 and 2015, 196 patients were treated for combined carotid and coronary a
Brazilian Journal of Cardiovascular Surgery. Publicado em: 2022
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7. Mobilizing a pluralist theoretical approach to understand microlending digital platforms: the AfricaMC case
Abstract Purpose This study aims to explore how a microlending digital platform connects social investors in developed countries and micro-entrepreneurs in Africa. However, additional research is necessary to discuss how online auction models are designed and implemented and how existing theories can explain their use in the so-called developing countries.
RAUSP Management Journal. Publicado em: 2022
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8. Telementored ultrasonography: a narrative review
ABSTRACT BACKGROUND: Teleradiology consists of electronic transmission of radiological images from one location to another, including between countries, for interpretation and/or consultation. It is one of the most successful applications of telemedicine. Combining this methodology with ultrasound (called telesonography) can accelerate the process of making
Sao Paulo Medical Journal. Publicado em: 2022
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9. Eco-friendly multivariant green analytical technique for the estimation of ketoconazole by UV spectroscopy in bulk and cream formulation
The pharmaceutical industries are focusing on Green Analytical Chemistry principles like miniaturization, eco-friendly solvent usage, waste recycling, and analyst safety for sustainable results. A simple, eco-friendly sensitive and effective extraction and multivariant green analytical method to estimate ketoconazole in bulk and cream formulation were develo
Química Nova. Publicado em: 2022
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10. Incontinence after laparoscopic radical prostatectomy: a reverse systematic review
ABSTRACT Purpose: To report the prevalence of the definitions used to identify post-prostatectomy incontinence (PPI) after laparoscopic radical prostatectomy (LRP), and to compare the rates of PPI over time under different criteria. Materials and Methods: In the period from January 1, 2000, until December 31, 2017, we used a recently described methodology
International braz j urol. Publicado em: 2022
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11. Distortion Product Otoacoustic Emissions (DPOAEs) In Tinnitus Patients
Abstract Introduction Tinnitus is the perception of sound in the absence of external sound stimulation. There is a general agreement that it is a direct consequence of irreversible and permanent cochlear damage. Objectives The present work is designed to study the distortion product otoacoustic emissions (DPOAEs) in tinnitus patients with normal hearing in
International Archives of Otorhinolaryngology. Publicado em: 2022
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12. Potential and challenges for using neuroscientific tools in strategic management studies
Abstract Purpose The purpose of this study is to understand how neuroscientific tools are used and discussed in ongoing research on strategy in organizations. Design/methodology/approach The authors used a bibliometric study of bibliographic pairing to answer the research question. They collected data from the Web of Science and Scopus databases using the
RAUSP Management Journal. Publicado em: 2022