7,064 research outputs found
Confirmatory factor analysis of the Revised UCLA Loneliness Scale (UCLA LS-R) in individuals over 65
No full textGoals: The UCLA LS-R is the most extensively used scale to assess loneliness. However, few studies examine the scale's use on older individuals. The goal of the study is to analyse the suitability of the scale´s structure for assessing older individuals.
Method: The UCLA LS-R scale was administered to a random sample of 409 community-dwelling residents of Madrid (53% women) aged 65-84 years (obtained from the MentDis_ICF65+ study). Confirmatory factor analysis was used to assess the factor structure of the UCLA LS-R.
Results: The internal consistency of the scale obtained a Cronbach's alpha of .85. All the analysed models of factor structure of the UCLA LS-R achieved a fairly good fit and RMSEA values over .80. The models that best fit the empirical data are those of Hojat (1982) and Borges et al. (2008).
Conclusion: The data suggest an equivalent effectiveness of UCLA LS-R in adults under 65 and over 65, which may indicate a similar structure of the loneliness construct in both populations. This outcome is consistent with the idea that loneliness has two dimensions: emotional loneliness and social loneliness. The use of short measures that are easy to apply and interpret should help primary care professionals identify loneliness problems in older individuals sooner and more accurately.European Commission (Grant No: 223105)Depto. de Personalidad, Evaluación y Psicología ClínicaFac. de PsicologíaTRUEpu
NUMERICAL STUDY OF THE ROBUSTNESS OF STEEL STRUCTURES WITH FRICTION JOINTS
No full textThis paper presents finite element analysis on Abaqus Software of a steel frame equipped with friction joints subjected to a static load and to a vehicle impact, in one of its external columns. The force-time histories were determined considering the loading patterns found on the experimental impact tests conducted on the joint and on the friction damper (Santos, et al. 2017).The behaviour of the friction joints was included in the model by a slot-rotation spring. For the impact analysis, the effect of high strain rates on the materials constitutive model. The numerical simulations are used to predict the structural robustness of a steel frame under exceptional loading conditions with the studied connections types. Furthermore, the behaviour of the frame with friction joints is compared with the behaviour of the same frame with rigid joints
Author Attributions in Medieval Text Collections: An Exploration
No full textThis article examines the role and function of author attributions in multi-text manuscripts containing Dutch, English, French or German short verse narratives. The findings represent one strand of the investigations undertaken by the cross-European project ‘The Dynamics of the Medieval Manuscript’, which analysed the dissemination of short verse narratives and the principles of organisation underlying the compilation of text collections. Whilst short verse narratives are more commonly disseminated anonymously, there are manuscripts in which authorship is repeatedly attributed to a text or corpus. Through six case studies, this article explores medieval concepts of authorship and how they relate to constructions of authority, whether regarding an empirical figure or a literary construction. In addition, it looks at how authorship plays a role in manuscript compilation, and at the effects of attributions (by author and/or compiler) on reception. The case studies include manuscripts from the thirteenth to fifteenth centuries, produced in a range of social and cultural contexts, and featuring some of the most important European authors of short verse narratives: Rutebeuf, Baudouin de Condé, Der Striker, Konrad von Würzberg, Willem of Hildegaersberch, and Geoffrey Chaucer. The preliminary findings contribute to our understanding of author attributions in text collections from across northern Europe and point towards future lines of enquiry into the role of authorship in medieval textual dissemination
Batch Bayesian Learning of Large-Scale LS-SVMs Based on Low-rank Tensor Networks
No full textLeast Squares Support Vector Machines (LS-SVMs) are state-of-the-art learning algorithms that have been widely used for pattern recognition. The solution for an LS-SVM is found by solving a system of linear equations, which involves the computational complexity of O(N^3). When datasets get larger, solving LS-SVM problems with standard methods becomes burdensome or even unfeasible. The Tensor Train (TT) decomposition provides an approach to representing data in highly compressed formats without loss of accuracy. By converting vectors and matrices in the TT format, the storage and computational requirements can be greatly reduced. In this thesis, we develop a Bayesian learning method in the TT format to solve large-scale LS-SVM problems, which involves the computation of a matrix inverse. This method allows us to include the information we know about the model parameters in the prior distribution. As a result, we are able to obtain a probability distribution of the parameters, which enables us to construct confidence levels of the predictions. In the numerical experiment, we show that the developed method performs competitively with the current methods.Mechanical Engineering | Systems and Contro
IP Producto LS FLUFENACET DFF
No full textCSIC- Departamento de Medio Ambiente y Agronomía (MA-INIA)Informe final para la resolución de la autorización del producto fitosanitario LS FLUFENACET DFF en relación a la evaluación de la clasificación bajo el reglamento 1272/2008.Peer reviewe
Additive Manufacturing: Polymers Applicable for Laser Sintering (LS)
No full textAbstractAdditive Manufacturing (AM) is close to become a production technique changing the way of part fabrication in future. Enhanced complexity and personalized features are aimed. The expectations in AM for the future are enormous and betimes it is considered as kind of the next industrial revolution. Laser Sintering (LS) of polymer powders is one component of the AM production techniques. However materials successfully applicable to Laser Sintering (LS) are very limited today. The presentation picks up this topic and gives a short introduction on the material available today. Important factors of polymer powders, their significance for effective LS processing and analytical approaches to access those values are presented in the main part. Concurrently the exceptional position of polyamide 12 powders is this connection is outlined
IP Producto LS AZOXY 250
No full textCSIC- Departamento de Medio Ambiente y Agronomía (MA-INIA)Informe final para la resolución de la autorización del producto fitosanitario LS AZOXY 250 en relación a la evaluación de la clasificación bajo el reglamento 1272/2008.Peer reviewe
dRR Producto LS CHLTP 200
No full textCSIC- Departamento de Medio Ambiente y Agronomía (MA-INIA)Evaluación científico-técnica de clasificación bajo reglamento 1272/2008 del dosier del producto fitosanitario LS CHLTP 200 presentado bajo el artículo 33 del reglamento 1107/2009.Peer reviewe
COM Producto LS LAMBDA
No full textCSIC- Departamento de Medio Ambiente y Agronomía (MA-INIA)Informe de asesoramiento para la resolución de la autorización del producto fitosanitario LS LAMBDA en relación a la evaluación llevada a cabo por otro país miembro de la EU, en cuanto a la sección de ecotoxicología.Peer reviewe
The Social Cost-of-Living: Welfare Foundations and Estimation
No full textWe present a new class of social cost-of-living indices and a nonparametric framework for estimating these and other social cost-of- living indices. Common social cost-of-living indices can be understood as aggregator functions of approximations of individual cost-of-living indices. The Consumer Price Index (CPI) is the expenditure-weighted average of first-order approximations of each individual’s cost-of-living index. This is troubling for three reasons. First, it has not been shown to have a welfare economic foundation for the case where agents are heterogeneous (as they clearly are.) Second, it uses an expenditure-weighted average which downweights the experience of poor households relative to rich households. Finally, it uses only first-order approximations of each individual’s cost-of-living index, and thus ignores substitution effects. We propose a “common-scaling” social cost-of-living index, which is defined as the single scaling to everyone’s expenditure which holds social welfare constant across a price change. Our approach has an explicit social welfare foundation and allows us to choose the weights on the costs of rich and poor households. We also give a unique solution for the welfare function for the case where the weights are independent of household expenditure. A first order approximation of our social cost-of- living index nests as special cases commonly used indices such as the CPI. We also provide a nonparametric method for estimating second- order approximations (which account for substitution effects).Inflation, Social cost-of-living, Demand, Average Derivatives
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