831 resultados para Exploratory Factor Analysis


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Portugal provides a large number of factors that boost the development of the national equestrian tourism. It represents an opportunity for the qualification and differentiation of the national tourism, to stimulate rural economies, to combat seasonality and asymmetries.This study want to understand the importance, for the equestrian tourist, of the critical success factors such as the Lusitano horse, the national equestrian culture, the landscape diversity, among others. Also, how they can contribute to the differentiation of the national equestrian tourism for international destinations that are already deployed in the market.For this study is crucial to know the perspective of those involved in the various equestrian tourism activities. In this sense, a group of companies were selected and exploratory interviews were conducted that contributed to important outputs in the construction of the questionnaire.The research was attended by 110 individuals, with different profiles, motivations and types of involvement. From the analysis, it is concluded that the critical success factors are significant in motivating equestrian tourists, namely the quality of equestrian infrastructures, the Lusitano horse, the hospitality, among others. It is also possible to analyze that the equestrian tourist demonstrates a strong commitment: they are knowledgeable, read a lot about riding and belong to equestrian clubs.Finally, the factor analysis highlight the agreement between participants and a significant number of statements made in the questionnaire related to motivation and involvement. It is possible to conclude that equestrian tourists look for relaxing moments and opportunities to expand their equestrian knowledge.

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Two late Quaternary sediment cores from the northern Cape Basin in the eastern South Atlantic Ocean were analyzed for their benthic foraminiferal content and benthic stable carbon isotope composition. The locations of the cores were selected such that both of them presently are bathed by North Atlantic Deep Water (NADW) and past changes in deep water circulation should be recorded simultaneously at both locations. However, the areas are different in terms of primary production. One core was recovered from the nutrient-depleted Walvis Ridge area, whereas the other one is from the continental slope just below the coastal upwelling mixing area where present day organic matter fluxes are shown to be moderately high. Recent data served as the basis for the interpretation of the late Quaternary faunal fluctuations and the paleoceanographic reconstruction. During the last 450,000 years, NADW flux into the eastern South Atlantic Ocean has been restricted to interglacial periods, with the strongest dominance of a NADW-driven deep water circulation during interglacial stages 1, 9 and 11. At the continental margin, high productivity faunas and very low epibenthic d13C values indicate enhanced fluxes of organic matter during glacial periods. This can be attributed to a glacial increase and lateral extension of coastal upwelling. The long term glacial-interglacial paleoproductivity cycles are superimposed by high-frequency variations with a period of about 23,000 yr. Enhanced productivity in surface waters above the Walvis Ridge, far from the coast, is indicated during glacial stages 8, 10 and 12. During these periods, cold, nutrient-rich filaments from the mixing area were probably driven as far as to the southeastern flank of the Walvis Ridge.

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Errata slip inserted.

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The psychometric properties of the Spence Children's Anxiety Scale (SCAS) were examined with 875 adolescents aged 13 and 14 years. This self-report measure was designed to evaluate symptoms relating to separation anxiety, social phobia, obsessive-compulsive disorder, panic-agoraphobia, generalized anxiety, and fears of physical injury. Results of confirmatory and exploratory factor analyses supported six factors consistent with the hypothesized subtypes of anxiety. There was support also for a model in which the first-order factors loaded significantly on a single second-order factor of anxiety in general. The internal consistency of the total score and sub-scales was high, and 12-week test-retest reliability was satisfactory. The SCAS correlated strongly with a frequently used child self-report measure of anxiety and significantly, albeit at a lower level, with a measure of depression. (C) 2002 Elsevier Inc. All rights reserved.

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Five case study communities in both metropolitan and regional urban locations in Australia are used as test sites to develop measures of 'community strength' on four domains: Natural Capital; Produced Economic Capital; Human Capital; and Social and Institutional Capital. The paper focuses on the fourth domain. Sample surveys of households in the five case study communities used a survey instrument with scaled items to measure four aspects of social capital - formal norms, informal norms, formal structures and informal structures - that embrace the concepts of trust, reciprocity, bonds, bridges, links and networks in the interaction of individuals with their community inherent in the notion social capital. Exploratory principal components analysis is used to identify factors that measure those aspects of social and institutional capital, while a confirmatory analysis based on Cronbach's alpha explores the robustness of the measures. Four primary scales and 15 subscales are identified when defining the domain of social and institutional capital. Further analysis reveals that two measures - anomie, and perceived quality of life and wellbeing - relate to certain primary scales of social capital.

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Morningness scales have been translated into several languages, but it lack of normative data and methodological differences make cross-cultural comparisons difficult. This study examines the psychometric properties and factor structure of the Composite Scale of Morningness (CSM) in samples from five countries: France (n = 627), Italy (n, = 702), Spain (n = 391), Thailand (n. = 503), and Australia (17 = 654). Strong national differences are identified. A quadratic relationship between age and CSM total score was apparent in the Australian data with a downward trend after age 35 yrs. There was no age effect in air), sample in the range from 18 to 29 yrs. Factor analysis identified a three-factor solution in all groups for both men and women. Tucker's congruence coefficients indicate that: (1) this solution is highly congruent between sexes in each culture, and (2) a morning affect factor is highly congruent between cultures. These results indicate there are national differences in factorial structure and that cut-off scores used to categorize participants as morning- and evening-types should be established for different cultural and age groups.

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No mundo moderno, comodidade e conveniência têm sido fatores ligados diretamente às necessidades cotidianas das pessoas, onde o tempo é cada vez mais escasso e a busca por facilidades se torna uma constante. Tendo em vista esse cenário, na mesma medida crescente do número de frequentadores em praça de alimentação, há uma concorrência intensa travada pelas empresas de fast food estabelecidas nesses centros de compras. Nesse contexto, esse trabalho identifica e analisa fatores determinantes da qualidade dos serviços de restaurantes fast food, sob a ótica dos consumidores. O setor de fast food foi dividido em três categorias: temáticos, por quilo e lanchonetes, visando identificar possíveis diferenças nesses segmentos. O universo da pesquisa concentra-se nos consumidores dos restaurantes fast food situados no principal shopping center da cidade de Mauá. A pesquisa é de caráter descritivo e exploratório, cujos dados foram coletados por meio de questionário, baseado no instrumento de análise SERVQUAL, aplicado junto a uma amostra não probabilística de 390 usuários da praça de alimentação. Foi realizada análise fatorial por meio do software estatístico SPSS v19, extraindo cinco fatores determinantes da qualidade dos serviços de restaurantes fast food. Dentre os fatores extraidos, ressaltam-se os que estão ligados à Excelência e à Personalização dos serviços. Os segmentos analisados apresentaram convergências em seus resultados, como a elevada expectativa por parte dos consumidores, além do déficit na qualidade percebida de serviços dos restaurantes fast food, assim como apresentaram divergências em suas análises individuais, evidenciando peculiaridades a cada um desses.

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Principal component analysis (PCA) is a ubiquitous technique for data analysis and processing, but one which is not based upon a probability model. In this paper we demonstrate how the principal axes of a set of observed data vectors may be determined through maximum-likelihood estimation of parameters in a latent variable model closely related to factor analysis. We consider the properties of the associated likelihood function, giving an EM algorithm for estimating the principal subspace iteratively, and discuss the advantages conveyed by the definition of a probability density function for PCA.

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Principal component analysis (PCA) is a ubiquitous technique for data analysis and processing, but one which is not based upon a probability model. In this paper we demonstrate how the principal axes of a set of observed data vectors may be determined through maximum-likelihood estimation of parameters in a latent variable model closely related to factor analysis. We consider the properties of the associated likelihood function, giving an EM algorithm for estimating the principal subspace iteratively, and discuss the advantages conveyed by the definition of a probability density function for PCA.