Search results for "Factorial"

The caramel flavour: impacts of the volatile and the non-volatile fraction on perception

2013

The aim of this thesis was to investigate the impact of the volatile odorant fraction and the non-volatile fraction on the perception of caramel flavour. The first step focused on the analytical characterization of the volatile odorant fraction of caramel using Gas Chromatography coupled to Olfactometry (GC/O), GC/Mass Spectrometry (GC/MS) and heart-cutting MDGC/MS/O. Results highlighted the presence of more than one hundred compounds and demonstrated the complexity of the caramel volatile fraction. The objective of the second step was to understand the contribution of odorant compounds identified to the caramel aroma typicality. Literature shows that odour intensity is not sufficient to ev…

Cross-modal interactions between taste and smell: Odour-induced saltiness enhancement depends on salt level

2011

International audience; In recent years, health concerns related to salt have led to extensive research on low-salt foods. One major remaining issue is to reduce sodium content while still providing the salty fix, to maintain food appreciation, acceptance and choice. Using well-selected odours has been proposed to compensate for sodium chloride reduction in food, due to the cross-modal interactions between odour and taste. However, interactions between taste and odour, with regards to saltiness, remain poorly investigated. Moreover, although a few studies have assessed the influences of odour and sweet supra-threshold intensity on cross-modal interactions, none focused directly on how they …

Psychometric properties of the Cyber-Violence Scale in Adolescent Couples (Cib-VPA)

2018

Resumen La utilización que los adolescentes hacen de las redes sociales, móviles e internet, para ejercer violencia hacia la pareja resulta preocupante. Por esta razón, es necesario disponer de instrumentos fiables, específicos para población adolescente y que permitan evaluar tanto situaciones de acoso como de victimización. El objetivo de este estudio fue analizar las propiedades psicométricas de la Escala de Ciber-violencia en Parejas Adolescentes (Cib-VPA). Esta escala consta de dos subescalas, ciberacoso perpetrado y cibervictimización, con 10 ítems cada una relativos a conductas agresivas y de control que pueden ser perpetradas o sufridas a través de redes sociales en parejas adolesce…

Psychometric properties of the «Spanish Burnout Inventory» (SBI) in a sample of Italian health professionals: a gender perspective

2017

El objetivo de este estudio fue analizar las propiedades psicométricas del Cuestionario para la Evaluación del Síndrome de Quemarse por el Trabajo (CESQT) en una muestra de profesionales de la salud italianos. La muestra estuvo formada por 695 participantes (453 profesionales de enfermería y 242 médicos). Según el género se identificaron 451 mujeres (64.9%) y 244 hombres (35.1%). El CESQT está formado por 20 ítems que se distribuyen en cuatro dimensiones: Ilusión por el trabajo (5 ítems), Desgaste psíquico (4 ítems), Indolencia (6 ítems), y Culpa (5 ítems). La estructura factorial se analizó mediante análisis factorial confirmatorio. Todos los ítems presentaron valores adecuados para los pa…

Beyond Tandem Analysis: Joint Dimension Reduction and Clustering in R

2019

We present the R package clustrd which implements a class of methods that combine dimension reduction and clustering of continuous or categorical data. In particular, for continuous data, the package contains implementations of factorial K-means and reduced K-means; both methods combine principal component analysis with K-means clustering. For categorical data, the package provides MCA K-means, i-FCB and cluster correspondence analysis, which combine multiple correspondence analysis with K-means. Two examples on real data sets are provided to illustrate the usage of the main functions.

ECOCOMPOSITI MATER-BI®/FARINA DI LEGNO: OTTIMIZZAZIONE DELLE PROPRIETA’ ATTRAVERSO ANALISI STATISTICA E BIODEGRADAZIONE

2009

Academic Success and Student Satisfaction with University Teaching

2007

This study uses surveys to assess student academic success in relation to the teaching activity of the University staff. The main goal is to test how the student’s degree of satisfaction of with their teachers can be considered dependent on the success the student obtains in each subject. The results show that the students are more satisfied with their teaching when they have a higher rate of success, although in some optional courses, the degree of satisfaction diminishes with the higher rate of success. The course expectations, when defined by the difference between achievement and success, impact the student satisfaction with the teaching.

Experimental Research on Technological Parameters Optimization of Natural Gases

2015

The paper contains a modeling application with the help of factorial experiments of influence variations of some parameters of natural gases over the hourly flow delivered towards population. In order to completely and correctly draft the experiment we followed and highlighted the objective functions of the process to be analyzed, and then there were identified the factors that influence the objective function to be analyzed. In the end the experimental data was processed and solutions were proposed.

Estructura factorial de la adaptación española de la Escala de Identificación Grupal de Tarrant

2011

Resumen tomado de la publicación En este estudio se analiza la estructura factorial de la versión española de la Escala de Identificación Grupal de Tarrant. Esta escala está fundamentada en la Teoría de la Identidad Social y mide aspectos cognitivos, evaluativos y afectivos de la identificación grupal. Aunque esta escala ha sido considerada unidimensional al utilizarla con adolescentes, está basada en escalas de identificación grupal previas consideradas multidimensionales. Mediante análisis confirmatorios se contrastaron varios modelos factoriales en dos muestras independientes de adolescentes españoles (N= 1.795) y mexicanos (N=1.494). En ambas muestras el modelo de tres factores (autocat…

Psicothema

2016

Resumen tomado de la publicación Invarianza factorial de la Escala de Satisfacción con la Vida en adolescentes de España y Portugal. Antecedentes: la Escala de Satisfacción con la Vida es una de las escalas más utilizadas para medir el juicio cognitivo global sobre la propia satisfacción con la vida. Método: este estudio evalúa la equivalencia de la “SWLS” en adolescentes españoles y portugueses con Análisis Factorial Confirmatorio multi-muestra. Los participantes fueron alumnado español (N = 2.183) y portugués (N = 4.082) de Educación Secundaria. Resultados: los resultados proporcionan un elevado apoyo a la consistencia interna de las versiones en español y portugués de esta escala. Los re…