Search results for "Statistics"
showing 10 items of 7671 documents
Consistency Between the Subjective Perception of Feeling Indisposed, the Decision to Drive and Driving Performance
2016
Drivers' health and fitness are essential issues in order to predict traffic crashes, taking into account that these characteristics are essential to perform this task correctly and safety. The purpose of this research was to analyze the frequency in which drivers who feel physically or emotionally unable to drive decide to perform this task, or not, under states of indisposition, as well as the perception of the effect that this indisposition had on driving. This cross-sectional study used a total sample of n=1200 (666 [56%] men and 534 [44%] women) Spanish drivers, who answered a questionnaire designed to collect data about their psychosocial characteristics, driving habits and perception…
Probabilistic cross-validation estimators for Gaussian process regression
2018
Gaussian Processes (GPs) are state-of-the-art tools for regression. Inference of GP hyperparameters is typically done by maximizing the marginal log-likelihood (ML). If the data truly follows the GP model, using the ML approach is optimal and computationally efficient. Unfortunately very often this is not case and suboptimal results are obtained in terms of prediction error. Alternative procedures such as cross-validation (CV) schemes are often employed instead, but they usually incur in high computational costs. We propose a probabilistic version of CV (PCV) based on two different model pieces in order to reduce the dependence on a specific model choice. PCV presents the benefits from both…
Validation of a questionnaire of attributions to the detection of coincidences in academic work
2019
El plagio como tema de investigación en el contexto universitario no ha cesado de ser una preocupación constante debido a sus múltiples repercusiones. El presente estudio describe el proceso seguido en la validación del Cuestionario de atribuciones para la detección de coincidencias en trabajos académicos (CUDECO), cuya finalidad es evaluar la relevancia que tiene citar correctamente y detectar las causas que llevan a cometer plagio. A partir de una muestra de 2,331 estudiantes, se realiza un anális is de la fiabilidad como consistencia interna y un análisis factorial exploratorio (AFE) del instrumento. El análisis de la fiabilidad lleva a proponer un reajuste en el cuestionario inicialment…
Environmental problems and Geographic education. A case study: Learning about the climate and landscape in Ontinyent (Spain)
2021
AbstractCultural perceptions of the environment bring us back to elements and factors guided by “natural” cause-effect principles. It seems that academic education has had little effect on the manner and results of learning about changes in the local landscape, especially as regards rational explanations. There is considerable difficulty relating academic concepts about the climate to transformations in the environmental landscape. Teaching tasks are mediatized due to the use of rigorous and precise concepts which facilitate functional and satisfactory learning. This is the objective of the research this article aims to undertake, for which we have chosen the case of Ontinyent (Spain). This…
The Role of Perceived Relevance and Attention in Teachers’ Attitude and Intention to Use Educational Video Games
2017
Educational video games (EVGs) are becoming a trending topic in education as a new teaching methodology which can help teachers to increase students’ attention and engagement during the learning process. Nevertheless, despite an increasing academic interest in EVGs little research has been devoted to delve into teacher’s beliefs affecting their attitude towards EVGs and how these beliefs also affect their intention to use EVGs in their courses. Using Keller’s ARCS model as a theoretical framework, the role of perceived relevance and attention in teachers’ attitude and intention to use EVGs is analyzed. To do so a research model is tested using a sample of 312 Higher Education teachers via s…
Creación de un modelo estadístico predictivo para la determinación de las funciones de atenuación en español hablado
2018
Recientemente, algunos autores han definido distintas variables para caracterizar la atenuación lingüística en el marco de una base de datos multidimensional (Briz/Albelda; Albelda/otros). En este estudio se han seleccionado 982 elementos de atenuación de dieciocho entrevistas de español hablado; todos ellos han sido supervisados por hasta cuatro entrevistadores del proyecto Es.VaG.Atenuación. Finalmente, los datos se han evaluado mediante tres pruebas estadísticas para la clasificación y la reducción de variables: el análisis múltiple de correspondencias, el árbol de clasificaciones y el Random Forest. Las variables más determinantes en la discriminación de las funciones de atenuación han …
History in Lexicography and Lexicography in History: A Reappraisal
2018
This paper aims to provide an overview of anglophone literature on historical lexicography. It begins by defining history and lexicography in order to explore possible relationships between them. What follows is a critical discussion of two analytical perspectives: “history in lexicography” and “lexicography in history.” The former seeks to explain what historical information is, how history has permeated dictionaries, particularly those compiled on historical principles, and why the historical dictionary needs to be re-interpreted along new lines. The latter, by contrast, attempts to identify the main elements involved in the writing of a history of lexicography. Since no historical accoun…
Readability and the Web
2012
Readability indices measure how easy or difficult it is to read and comprehend a text. In this paper we look at the relation between readability indices and web documents from two different perspectives. On the one hand we analyse how to reliably measure the readability of web documents by applying content extraction techniques and incorporating a bias correction. On the other hand we investigate how web based corpus statistics can be used to measure readability in a novel and language independent way.
Measurement of the W boson mass
1996
The W boson mass is measured using proton-proton collision data at root s = 13 TeV corresponding to an integrated luminosity of 1.7fb(-1) recorded during 2016 by the LHCb experiment. With a simultaneous fit of the muon q/p(T) distribution of a sample of W ->mu y decays and the phi* distribution of a sample of Z -> mu mu decays the W boson mass is determined to be
La délimitation de la citoyenneté en Côte-d'Or, d'après le droit électoral de la IIe République
1997
One of the essential elements of citizenship lies in participating in politics. Il is particulary through the right to vote that man will be fully integrated into society and take part in the decisions concerning the running of the government. Adopting universal suffrage is giving an important power to men. Thus, certain rulers have tried to channel the vote by excluding citizens liable to be detrimental to them. The law of May 31, 1850 meant to eliminate the « vile multitude », according to the expression used by Thiers. And it is in particular through the study of the concrete consequences of this law that the influence of the electoral system in the definition of citizenship can be measu…