Results 21 to 30 of about 23,469 (193)

Efecto de la curtosis y de las matrices de dispersión en los diseños de medidas repetidas

, 1997
Two analysis procedures for a random experimental design with several consecutives measures through time in each of the experimental units, are examinated in this paper. One of them consists in facing data applying AVAR mixed model with modelated error structure by AR processes.
Fernández García, María Paula, Vallejo Seco, Guillermo   +1 more
openaire   +3 more sources

Combining reverse Monte Carlo analysis of X-ray scattering and extended X-ray absorption fine structure spectra of very small nanoparticles. [PDF]

J Appl Crystallogr, 2023
Computing scattering intensity using the Debye scattering equation after binning interatomic distances avoids finite size artefacts and is efficient enough for simultaneous refinement of scattering data and extended X‐ray absorption spectra by reverse Monte Carlo simulations.Finite size effects in partial pair distribution functions generate artefacts ...
Winterer M, Geiß J.
europepmc   +2 more sources

The devil is in the detail: Environmental variables frequently used for habitat suitability modeling lack information for forest-dwelling bats in Germany. [PDF]

Ecol Evol
Traditional habitat suitability models, relying on variables with coarse level of detail, may inadequately represent the complexities of specialized species. This study shows that habitat suitability modeling for forest specialist bat species can be improved by integrating more targeted data, such as tree species classification map and LiDAR‐derived ...
Bald L, Gottwald J, Hillen J, Adorf F, Zeuss D.   +4 more
europepmc   +2 more sources

DIFFUSION-CURTOSIS MRI OF THE BRAIN IN DIFFERENTIAL DIAGNOSTICS OF METASTASES OF TUMORS OF VARIOUS PRIMARY LOCATION

Journal of Clinical Practice, 2023
OBJECTIVE. The aim of this study is to improve the quality of differential diagnosis of metastases in the brain of tumors of different primary localization by introducing the diffusion-kurtosis magnetic resonance imaging technique into the MR-scanning ...
N. V. Garanina, M. B. Dolgushin, L. M. Fadeeva, E. Pogosbekyan, D. V. Sashin, E. A. Nechipay, A. V. Dvoryanchikov   +6 more
semanticscholar   +1 more source

A Bayesian perspective on Biogen's aducanumab trial

Alzheimer's &Dementia, Volume 18, Issue 11, Page 2341-2351, November 2022., 2022
Abstract This perspective is a companion to a recent editorial on the use of Bayesian analysis in clinical research. We aim to introduce and highlight the relevance and advantages that Bayesian inference offers to clinical trials using the data on the amyloid antibody aducanumab presented at a Food and Drug Administration hearing in November 2020 as an
Anna G. M. Temp, Alexander Ly, Johnny van Doorn, Eric‐Jan Wagenmakers, Yi Tang, Michael W. Lutz, Stefan Teipel   +6 more
wiley   +1 more source

Structure of Needle Highlights Ecological Adaptability and Microevolution of Natural Populations of Cedrus atlantica in Morocco

International Journal of Forestry Research, Volume 2022, Issue 1, 2022., 2022
The study of morphological and anatomical characteristics of leaves is important for assessing the geographical variation of species. The ecological adaptability of forty individuals from four populations of Cedrus atlantica were studied, based on analysis of morphological and anatomical traits.
Nezha El Bakkali, Mohammed Bendriss Amraoui, Anna Źróbek-Sokolnik   +2 more
wiley   +1 more source

Algorithmic versus teacher‐led sequencing in a digital serious game and the development of second language reading fluency and accuracy

British Journal of Educational Technology, Volume 52, Issue 5, Page 1898-1916, September 2021., 2021
Abstract Recent years have seen a surge of calls for personalization of education. Automatised adaptivity in serious games has been advocated as a potential instantiation of such calls. Yet little is known about the extent to which personalised learning through automatised adaptivity poses an advantage for language learning over generalised teacher‐led
Judit Serra, Roger Gilabert
wiley   +1 more source

Estrategia aprendizaje basado en proyectos para desarrollar el pensamiento crítico en estudiantes de secundaria

Revista Arbitrada Interdisciplinaria Koinonía, 2023
El empleo de metodologías activas para enseñar y aprender cobra protagonismo en el mundo actual ya que difieren de lo tradicional y, destacan el rol del estudiante, en su proceso de aprendizaje.
Luis Arturo Castro-Valle, Mario Andrés Terrones-Marreros, Kony Luby Duran-Llaro, Gerónimo Miguel Oscar-Santiago   +3 more
semanticscholar   +1 more source

Métodos analíticos de normalidad. Momentos.

Revista Electrónica AnestesiaR, 2023
El índice de simetría y el índice de apuntamiento, también llamado curtosis, son dos de los cuatro primeros momentos de una distribución normal. Ambos pueden utilizarse para comprobar el supuesto de normalidad de una distribución de datos, aunque son ...
Manuel Molina
semanticscholar   +1 more source

Valoracion comparativa opciones en acciones call europeas: aproximaciones de black-scholes, expansion de edgeworth, brenner –subrahmanyam y binomial COX- ROX -rubisntein

Ciencia Latina Revista Científica Multidisciplinar, 2023
En la valoración de opciones en acciones sin dividendos, se encuentran diversos métodos que emergieron a partir de la estructura presentada por Black-Scholes, con dos importantes condiciones; Volatilidad medida por la desviación estándar y el rendimiento
Jose Antonio Arnez Gutierrez
semanticscholar   +1 more source