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421“…Typical problems distorting the principal components decomposition are highlighted and solutions for the successful PCA are described. …”
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422“…METHODS: Convenience sampling yielded 498 kindergarten principals who completed the “Questionnaire on the Principal’s Transformational Leadership Behavior” and “Questionnaire on Organizational Climate.” …”
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423por Zhang, Ping, West, Nicholas P., Chen, Pin-Yen, Thang, Mike W. C., Price, Gareth, Cripps, Allan W., Cox, Amanda J.“…BACKGROUND: Principal components analysis (PCA) is often used to find characteristic patterns associated with certain diseases by reducing variable numbers before a predictive model is built, particularly when some variables are correlated. …”
Publicado 2019
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425por Charalambous, Thalis, Clayden, Jonathan D., Powell, Elizabeth, Prados, Ferran, Tur, Carmen, Kanber, Baris, Chard, Declan, Ourselin, Sebastien, Wheeler-Kingshott, Claudia A. M. Gandini, Thompson, Alan J., Toosy, Ahmed T.“…Structural network-based approaches can assess white matter connections revealing topological alterations in multiple sclerosis (MS). However, principal network (PN) organisation and its clinical relevance in MS has not been explored yet. …”
Publicado 2020
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426“…Here, we introduce a novel concept of genotype-by-population (G × P) interaction where population is defined by the first and second ancestry principal components (PCs), which are less likely to be confounded with country/cohort-specific factors. …”
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427“…On the basis of these observations, we argue that pathogen resistance vies with other commensal-provided benefits for being the principal evolutionary advantage provided by the microbiome to host lineages across the tree of life. …”
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428“…We investigated the manual foot stretching techniques employed by the physical therapists using a three-dimensional analysis system and an instrumented brace with force sensors. Principal motion analysis was applied to the obtained data, and principal motions were determined. …”
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432“…While ClassDojo claims to be used in over 95% of schools in the United States, there is little known about how students or principals interact with and understand the platform’s features and data. …”
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433por Constantia, Charalampous, Christos, Papademetriou, Glykeria, Reppa, Anastasia, Athanasoula-Reppa, Aikaterini, Voulgari“…The study included 88 teachers and 5 principals from Cyprus, as well as teachers and parents. …”
Publicado 2021
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434por Piasecki, Krzysztof, Roszkowska, Ewa, Wachowicz, Tomasz, Filipowicz-Chomko, Marzena, Łyczkowska-Hanćkowiak, Anna“…We consider the negotiation problem, in which an agent negotiates on behalf of a principal. Our considerations are focused on the Inspire negotiation support system in which the principal’s preferences are visualised by circles. …”
Publicado 2021
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435“…The overall flexibility of an α-helix can be resolved into constituent physical deformations such as bending in two orthogonal planes and twisting along the principal axis. We used Principal Component Analysis to identify and quantify the contribution of each of these dominant deformation modes in transmembrane α-helices, extramembrane α-helices, and α-helices in soluble proteins. …”
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436“…When confronted with massive data streams, summarizing data with dimension reduction methods such as PCA raises theoretical and algorithmic pitfalls. A principal curve acts as a nonlinear generalization of PCA, and the present paper proposes a novel algorithm to automatically and sequentially learn principal curves from data streams. …”
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437“…A questionnaire was designed, validated, and provided to the principals from Primary Education schools to carry out the study. …”
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438“…The COVID-19 is one of the worst pandemics in modern history. We applied principal component analysis (PCA) to the daily time series of the COVID-19 death cases and confirmed cases for the top 25 countries from April of 2020 to February of 2021. …”
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439“…The olfactory (piriform, PCx) cortex contains two main types of principal neurons, semilunar (SL) and superficial pyramidal (PYR) cells. …”
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440por Würtz, Martin, Zupa, Erik, Atorino, Enrico S., Neuner, Annett, Böhler, Anna, Rahadian, Ariani S., Vermeulen, Bram J. A., Tonon, Giulia, Eustermann, Sebastian, Schiebel, Elmar, Pfeffer, Stefan“…The gamma-tubulin ring complex (γ-TuRC) is the principal microtubule nucleation template in vertebrates. …”
Publicado 2022
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