Search results for "Factorial"

Design Of Experiments for the optimization the process parameters of thixotropic aluminum alloy

2006

The success of the thixoforming process depends on the possibility to confer to material, when it is found in the semisolid state, a microstructure characterized by globular particles of solid phase surrounded by a continuous film of liquid phase; such microstructure is obtainable through particular thermo-mechanical treatments. In the present research, in order to optimize the influence of process parameters in the step in which the thixotropic properties are conferred to the AA7075 aluminum alloy, the statistic technique of the Design Of Experiments (DOE) has been used. The advantages in the application of such technique are expressible in terms of reduction the times of development of pr…

Adaptation of the Body Image after Breast Cancer Questionnaire in the Polish context: factorial structure and validity of the scale

2016

<b>Background</b><br /> Valid assessment of body image is salient in therapy and rehabilitation of women suffering from breast cancer. Adequate instruments are still lacking in this domain. To overcome this limitation two aims were formulated in the study. First, we tested the factorial structure of the Body Image after Breast Cancer Questionnaire (BIBCQ) developed by Baxter (1998) in Canada, in the Polish context. Then, we tested the construct validity of the scale. The scale is based on a multidimensional concept of the body image of chronically ill individuals proposed by Vamos (1993).<br /> <br /> <b>Participants and procedure</b><br /> A …

2020

In order to ensure the concentration, compliance and motivation of the participants, a short version of 12 items was extracted from the “Experiences in Close Relationships Questionnaire (ECR)”. Even though this short English version shows equally good validity and reliability as the long version, there have been no representative norm values and psychometric characteristics available for the short version in German. Therefore, the German 12-item ECR was implemented in a representative sample of 1,127 males and 1,237 females (mean age M = 49.93; SD = 12.31) from the general public (N = 2,364). The reliability values of the German 12-item ECR in the representative sample are not as good as th…

Italian adaptation of the Group Questionnaire: validity and factorial structure

2020

The Group Questionnaire (GQ) is a measure recently developed by Krogel et al. (2013) for the evaluation of the therapeutic relationship in group. The GQ identifies a three-factor model of the relationship that allows to measure quality (Positive Bonding, Positive Working and Negative Relationship) and structure (member-member, member-leader and member-group), dimensions in group. This work shows the results of a first study on the Italian validation of the GQ. In this study the GQ was administered to 536 subjects from 32 non-clinical groups of undergraduate students. The cross-cultural validity of the GQ in the Italian population has been examined by comparing the psychometric properties an…

Psychometric Properties and Convergent Validity of the Dependency-Oriented and Achievement-Oriented Psychological Control Scale (DAPCS) with Italian …

2013

This study is aimed to validate the Italian version of the dependency-oriented and achievement-oriented psychological control scale (DAPCS), a self-report questionnaire designed to assess the adolescent’s perception of the two dimensions of psychological control. In Study 1, we assessed factorial validity and reliability of the Italian version of DAPCS with a sample of adolescents. In Study 2, we examined the convergent validity of the Italian version of the DAPCS analyzing the associations between the two domains of psychological control and well-established measures related to them such as strictness/supervision, overprotection, non dependency on parents, and family functioning. Confirmat…

Construcció i validació d'instruments per avaluar competències genèriques, en educació superior

2019

espanolSe presenta una alternativa de evaluacion para las competencias genericas que se desarrolan en educacion superior, considerando su caracteristica de multidimensionalidad. Se construyen instrumentos para evaluar la dimension cognitiva, afectiva y conductual del pensamiento critico, comunicaciom, iniciativa emprendedora y trabajo en equipo y, responsabilidad social. Se analiza su validez de constructo, por medio del anaaisis factorial exploratorio y confiabilidad, a traves del calculo del coeficiente de consistencia interna –alfa de Cronbach– de una muestra de 493 estudiants de primer ano de carrera, durant 2015. Los resultados sugieren que se dispone de instrumentos confiables y va- l…

On the genetics of psoriasis

1974

To elucidate the mode of inheritance in psoriasis, Falconer's model for estimating heritability which is under the assumption of multifactorial inheritance, was applied to the data of Hellgren (1967) from Sweden. The heritability estimates were based on both manifest and potential psoriasis since a clear separation of these two categories was impossible. These estimates were 64% for parents, 60% for siblings and 52% for all first degree relatives which included the children of psoriatic cases. For second degree relatives it was 48%. None of these differences are statistically significant. The results are discussed.

Validez factorial de la adaptación al español del Maslach Burnout Inventory-General Survey

2002

Objective. To explore the factorial structure of a Spanish version of the “Maslach Burnout Inventory-General Survey” (MBI-GS). Material and Methods. A cross-sectional study was conducted in 1999 among 149 municipal policemen in Tenerife, Spain. A questionnaire was applied to collect data on Professional Efficacy, Cynicism, and Burnout. Data were analyzed using factorial analysis and principal components with Varimax rotation. Results. Four factors had eigenvalues greater than 1; Factor 1 gouped Professional Efficacy items, Factor II grouped three Cynicism items. Further analysis was conducted to limit extraction to three factors. The factorial solution replicated the distribution of items i…

Oxidative stress is associated with an increased antioxidant defense in elderly subjects: a multilevel approach.

2014

© 2014 Fonseca et al. Background: Studies of associations between plasma GSH-Px activity and cardiovascular risk factors have been done in humans, and contradictory results have been reported. The aim of our study was to assess the association between the scavenger antioxidant enzyme glutathione peroxidase (GSH-Px) activity in plasma and the presence of novel and classical cardiovascular risk factors in elderly patients. Copyright: Methods: We performed a cross-sectional study with baseline data from a subsample of the PREDIMED (PREvención con DIeta MEDiterránea) study in Spain. Participants were 1,060 asymptomatic subjects at high risk for cardiovascular disease (CVD), aged 55 to 80, selec…

Validez factorial del “cuestionario para la evaluación del síndrome de quemarse por el Trabajo” (CESQT) en una muestra de médicos mexicanos

2010

El objetivo del este estudio fue evaluar la validez factorial y la consistencia interna del “Cuestionario para la Evaluación del Síndrome de Quemarse por el Trabajo” (CESQT). Se hipotetizó un modelo de cuatro factores, similar al del oringinal. La muestra fueron estuvo formada por 1110 médicos del Instituto Mexicano del Seguro Social. El instrumento está formado por 20 items distribuidos en 4 subescalas: Ilusión por el trabajo (5 items), Desgaste psíquico (4 items), Indolencia (6 items), y Culpa (5 items). El modelo fue evaluado con LISREL 8. Según diferentes índices de ajuste global el modelo presentó un ajuste adecuado: Chi2(164) = 225.06 (p < 0.001), GFI = 0.83, RMSEA = 0.061, NNFI = …