Lateral epicondylitis: New evidence for work relatedness.

International audience

Influência dos intermediários de distribuição de produtos turísticos no processo de decisão do meio de hospedagem pelo consumidor

This study examines the complex hotel buyer decision process in front of the tourism distribution channels. Its objective is to describe the influence level of the tourism marketing intermediaries, mainly the travel agents and tour operators, over the hotel decision process by the buyer-tourist. The data collection process was done trough a survey with three hundred brazilian tourists hosted in nineteen hotels of Natal, capital of Rio Grande do Norte, Brazil. The data analysis was done using some multivariate statistic techniques as correlation analysis, multiple regression analysis, factor analysis and multiple discriminant analysis. The research characterizes the hotel services consumers profile and his trip, and identifying the distribution channels used by them. Furthermore, the research verifies the intermediaries influence exercised over hotel buyer decision process, looking for identify causality relations between the influence level and the buyer profile. Verifies that information about hotels available on internet reduces the probability that this influence can be practiced; however it was possible identifying those consumers considers this information complementary and non-substitutes than the information from intermediaries. The characteristics of the data do not allow indentifying the factors that constraint the intermediaries influence neither identifying discriminant functions of the specific distribution channel choice by consumers. The study concludes that consumers don t agree in have been influenced by intermediaries or don t know if they have, still considering important to consult them and internet doesn t substitute their function as information source

Semiparametric modeling of the spatial distribution of occupational accident risk in the casual labor market, Piracicaba, southeast Brazil

The objective of this study was to estimate the spatial distribution of work accident risk in the informal work market in the urban zone of an industrialized city in southeast Brazil and to examine concomitant effects of age, gender, and type of occupation after controlling for spatial risk variation. The basic methodology adopted was that of a population-based case-control study with particular interest focused on the spatial location of work. Cases were all casual workers in the city suffering work accidents during a one-year period; controls were selected from the source population of casual laborers by systematic random sampling of urban homes. The spatial distribution of work accidents was estimated via a semiparametric generalized additive model with a nonparametric bidimensional spline of the geographical coordinates of cases and controls as the nonlinear spatial component, and including age, gender, and occupation as linear predictive variables in the parametric component. We analyzed 1,918 cases and 2,245 controls between 1/11/2003 and 31/10/2004 in Piracicaba, Brazil. Areas of significantly high and low accident risk were identified in relation to mean risk in the study region (p < 0.01). Work accident risk for informal workers varied significantly in the study area. Significant age, gender, and occupational group effects on accident risk were identified after correcting for this spatial variation. A good understanding of high-risk groups and high-risk regions underpins the formulation of hypotheses concerning accident causality and the development of effective public accident prevention policies.

A satisfação dos clientes internos e o comprometimento organizacional: um estudo à luz do modelo ASH nas indústrias alimentícias do RN

Currently the organizations are passing for continuous cycles of changes due to necessity of survival in the work market. The administration of the future points a way to the organizations of today and tomorrow, the search of the competitiveness from loyalty and motivation of its staff. Of this form, the model of the Auditoria do Sistema Humano (ASH), developed for Spanish researchers and that now it is being applied in Brazil, contemplates a series of dimensions about Human Resources management quality in the companies and the organizational effectiveness, such as the environment where the company is inserted, the strategies, the organizational drawing, the psychological and psychosocial processes, e the reached results. In this direction, the present research analyzed the factors of job satisfaction and organizational commitment, making, also, a relation of causality between the same ones. The quantitative-descriptive research had as population the employees of twenty three nourishing industries of the State of Rio Grande do Norte (Brazil), registered in the Federacy of the Industries of the state. The collection of the data occurred for the months of October of 2005 and March of 2006, by means of the application of questionnaire of model ASH. The sample was composed for 197 employees, however it was observed presence of five outliers, that they had been excluded from the analysis of the data. To extract the dimensions of the satisfaction and the commitment and identification the factorial analysis was used, with extraction method of principal components, rotation Varimax and normalization Kaiser. The gotten dimensions had been evaluated with the calculation of the coefficient Alpha of Cronbach. The factorial analysis of the pointers of the organizational commitment and identification had extracted ten factors. Of these, four had gotten significance of the analyses inside: affective commitment, values commitment, continuance commitment and necessity commitment. The result of the analysis of the pointers of job satisfaction indicated four factors: extrinsic, motivations, relation with the friends and auto-accomplishment. To deal with the data the relation between job satisfaction and organizational commitment it was used technique of multiple regression. The correlation between commitment and satisfaction was satisfactory, detaching the affective commitment with bigger index of correlation, followed of the affective one

How to optimize the business model for ConsultaClick an innovative startup in the e-health Portuguese sector

Field lab: Entrepreneurial and innovative ventures

Energy Cooperation in Energy Harvesting Communication Systems

In energy harvesting communications, users transmit messages using energy harvested from nature. In such systems, transmission policies of the users need to be carefully designed according to the energy arrival profiles. When the energy management policies are optimized, the resulting performance of the system depends only on the energy arrival profiles. In this dissertation, we introduce and analyze the notion of energy cooperation in energy harvesting communications where users can share a portion of their harvested energy with the other users via wireless energy transfer. This energy cooperation enables us to control and optimize the energy arrivals at users to the extent possible. In the classical setting of cooperation, users help each other in the transmission of their data by exploiting the broadcast nature of wireless communications and the resulting overheard information. In contrast to the usual notion of cooperation, which is at the signal level, energy cooperation we introduce here is at the battery energy level. In a multi-user setting, energy may be abundant in one user in which case the loss incurred by transferring it to another user may be less than the gain it yields for the other user. It is this cooperation that we explore in this dissertation for several multi-user scenarios, where energy can be transferred from one user to another through a separate wireless energy transfer unit. We first consider the offline optimal energy management problem for several basic multi-user network structures with energy harvesting transmitters and one-way wireless energy transfer. In energy harvesting transmitters, energy arrivals in time impose energy causality constraints on the transmission policies of the users. In the presence of wireless energy transfer, energy causality constraints take a new form: energy can flow in time from the past to the future for each user, and from one user to the other at each time. This requires a careful joint management of energy flow in two separate dimensions, and different management policies are required depending on how users share the common wireless medium and interact over it. In this context, we analyze several basic multi-user energy harvesting network structures with wireless energy transfer. To capture the main trade-offs and insights that arise due to wireless energy transfer, we focus our attention on simple two- and three-user communication systems, such as the relay channel, multiple access channel and the two-way channel. Next, we focus on the delay minimization problem for networks. We consider a general network topology of energy harvesting and energy cooperating nodes. Each node harvests energy from nature and all nodes may share a portion of their harvested energies with neighboring nodes through energy cooperation. We consider the joint data routing and capacity assignment problem for this setting under fixed data and energy routing topologies. We determine the joint routing of energy and data in a general multi-user scenario with data and energy transfer. Next, we consider the cooperative energy harvesting diamond channel, where the source and two relays harvest energy from nature and the physical layer is modeled as a concatenation of a broadcast and a multiple access channel. Since the broadcast channel is degraded, one of the relays has the message of the other relay. Therefore, the multiple access channel is an extended multiple access channel with common data. We determine the optimum power and rate allocation policies of the users in order to maximize the end-to-end throughput of this system. Finally, we consider the two-user cooperative multiple access channel with energy harvesting users. The users cooperate at the physical layer (data cooperation) by establishing common messages through overheard signals and then cooperatively sending them. For this channel model, we investigate the effect of intermittent data arrivals to the users. We find the optimal offline transmit power and rate allocation policy that maximize the departure region. When the users can further cooperate at the battery level (energy cooperation), we find the jointly optimal offline transmit power and rate allocation policy together with the energy transfer policy that maximize the departure region.

Some misspecfication problems in long-memory time series models

Doctor of Philosophy in Mathematics

Caracterização de casos de lesão medular e a sua relação com a independência funcional e qualidade de vida

Introdução: As lesões medulares acarretam consigo a problemática da deficiência, as suas respectivas sequelas interferem na qualidade de vida bem como na independência funcional destas pessoas, sendo habitual a existência de limitações que se prolongam ao longo a vida. O presente estudo visa a caracterização de sujeitos com lesão medular há mais de um ano, no que diz respeito à sua qualidade de vida e independência funcional, assim como, a relação entre as variáveis sóciodemográficas (género, idade, estado civil, escolaridade e profissão) e clínicas em estudo (nível, tipo, etiologia e data da lesão). Materiais e Métodos: O presente trabalho apresenta-se como um estudo observacional exploratório descritivo com abordagem quantitativa. A amostra foi formada por indivíduos adultos com lesão medular recrutados através da Associação Salvador e Associação Vida Independente. As medidas instrumentais utilizadas pelo estudo são o questionário sóciodemográfico e clínico, bem com a escala MIF (Granger, Hamilton, Keith, Zielezny, & Sherwins, 1986) e a escala SF-36 (Ware % Sherbourne, 1992). Resultados e Discussão: As análises demonstraram valores satisfatórios. A independência funcional e sua respectiva dimensão física e sóciocognitiva revelam resultados estatisticamente significativos com a variável nível neurológico. No que diz respeito à qualidade de vida esta demonstrou resultados estatisticamente significativos entre a dimensão desempenho emocional e a escolaridade entre o desempenho físico e a profissão e vitalidade e idade. Revelou igualmente valores satisfatórios entre todas as dimensões e o nível neurológico, entre a função social e data da lesão e por último entre a etiologia e função social, vitalidade, dor, saúde geral e mental. Conclusão: Os resultados obtidos com este estudo vêm reforçar a visão de que apesar dos indivíduos experienciarem um evento traumático e aspetos negativos após a lesão medular, há diferentes níveis de percepção de QoL e IF e que estas variam em função de algumas variáveis sóciodemográficas e clínicas. Neste ponto são ainda apresentadas as limitações do estudo e discutidas propostas de trabalhos futuros.

Hepatite Tóxica Induzida por Produtos Fitoterapêuticos: Natural Não é Sinónimo de Seguro

A case of toxic hepatitis induced by a fat burner natural product is reported. Pathogenic mechanisms of hepatotoxicity arediscussed, and causality nexus is analyzed. The goal of this presentation is to alert for the risk of severe adverse events while consuming falsely harmless products.

Clinical aspects associated with syndromic forms of Orofacial Clefts in a Colombian population

Objectives: To present descriptive epidemiology of Orofacial Clefts and to determine the association of syndromic forms with antenatal high-risk conditions, preterm birth, and comorbidities among nestedseries of cases. Methods: A study of nested-series of cases was conducted. Frequencies of cleft type, associated congenital anomalies, syndromic, non-syndromic and multiple malformation forms, and distribution of Orofacial Clefts according to sex and affected-side were determined. Odds ratios were calculated as measures of association between syndromic forms and antenatal high-risk conditions, preterm birth and comorbidities. A total of three hundred and eleven patients with Orofacial Clefts were assessed in a 12-month period. Results: The most frequent type of Orofacial Clefts was cleft lip and palate, this type of cleft was more frequent in males, whereas cleft palate occurred more often in females. The most common cases occurred as non-syndromic forms. Aarskog-Scott syndrome showed the highest frequency amongst syndromic forms. Hypertensive disorders in pregnancy, developmental dysplasia of the hip, central nervous diseases and respiratory failure showed significant statistical associations (p <0.05) with syndromic forms. Conclusions: These data provide an epidemiological reference of Orofacial Clefts in Colombia. Novel associations between syndromic forms and clinical variables are determined. In order to investigate causality relationships between these variables further studies must be carried out.

Clinical aspects associated with syndromic forms of Orofacial Clefts in a Colombian population

Objectives: To present descriptive epidemiology of Orofacial Clefts and to determine the association of syndromic forms with antenatal high-risk conditions, preterm birth, and comorbidities among nested-series of cases. Methods: A study of nested-series of cases was conducted. Frequencies of cleft type, associated congenital anomalies, syndromic, non-syndromic and multiple malformation forms, and distribution of Orofacial Clefts according to sex and affected-side were determined. Odds ratios were calculated as measures of association between syndromic forms and antenatal high-risk conditions, preterm birth and comorbidities. A total of three hundred and eleven patients with Orofacial Clefts were assessed in a 12-month period. Results: The most frequent type of Orofacial Clefts was cleft lip and palate, this type of cleft was more frequent in males, whereas cleft palate occurred more often in females. The most common cases occurred as non-syndromic forms. Aarskog-Scott syndrome showed the highest frequency amongst syndromic forms. Hypertensive disorders in pregnancy, developmental dysplasia of the hip, central nervous diseases and respiratory failure showed significant statistical associations (p <0.05) with syndromic forms. Conclusions: These data provide an epidemiological reference of Orofacial Clefts in Colombia. Novel associations between syndromic forms and clinical variables are determined. In order to investigate causality relationships between these variables further studies must be carried out.

Les retraductions françaises d'Al Moqqadima d'Ibn Khaldoun : étude paratextuelle des retraductions de Vincent-Mansour Monteil (1967) et d’Abdesselam Cheddadi (2002)

Ce mémoire porte sur les retraductions françaises du XXe siècle d’Al Moqaddima (Les Prolégomènes) (1377) d’Ibn Khaldoun, un traité historique et philosophique du XIVe siècle. La première traduction française, Les Prolégomènes, est réalisée par De Slane entre 1840 et 1863. Elle est suivie de deux retraductions, à savoir Discours sur l’histoire universelle (1967- 1968) réalisée par Vincent-Mansour Monteil, et Le Livre des Exemples I : Autobiographie, La Muqaddima (2002) réalisée par Abdesselam Cheddadi. L’objet de ce mémoire est de mener une analyse contextuelle, paratextuelle et discursive de ces deux retraductions de l’œuvre monumentale d’Ibn Khaldoun, afin de dégager les principaux facteurs déterminant, dans chaque cas, le choix de retraduire. Notre approche théorique s’inscrit dans le contexte récent de remise en cause de ladite « hypothèse de la retraduction » d’Antoine Berman, qui privilégie une analyse textuelle de l’œuvre (re)traduite en négligeant quelque peu l’analyse contextuelle éclairant les conditions de production des retraductions, et en limitant le positionnement du traducteur à sa relation envers la « vérité » du texte source. Ainsi, en retraçant l’histoire des différentes éditions des Prolégomènes au XXe siècle, en exposant le contexte qui entoure les retraductions, et en nous nous attachant aux stratégies discursives déployées par les traducteurs en marge de ces dernières, nous tenons compte des réflexions récentes sur les « causalités multiples » du phénomène de la retraduction, tout en montrant comment la subjectivité du traducteur, ses décisions et ses motivations sont reliées à tous les éléments extratextuels ou contextuels mis en valeur par les théoriciens. Nous montrons par notre analyse que les deux retraductions au corpus sont motivées par des facteurs internes au texte (tels que l’authenticité de leur original, une meilleure connaissance du texte, de la langue et de la culture source, la nécessité de corriger des erreurs dans les traductions antérieures), mais aussi par de nouveaux éléments externes au texte (tels que le changement de normes sociales, littéraires et traductionnelles, l’émergence de nouvelles interprétations du texte, le positionnement idéologique du retraducteur, sa volonté de s’imposer comme une autorité, etc.). La retraduction s’avère donc un phénomène complexe motivé par une combinaison de facteurs, à la fois internes (textuels), externes (contextuels) et personnels, propres au (re)traducteur.

The meaning, antecedents and outcomes of employee engagement:a narrative synthesis

The claim that high levels of engagement can enhance organizational performance and individual well-being has not previously been tested through a systematic review of the evidence. To bring coherence to the diffuse body of literature on engagement, the authors conducted a systematic synthesis of narrative evidence involving 214 studies focused on the meaning, antecedents and outcomes of engagement. The authors identified six distinct conceptualizations of engagement, with the field dominated by the Utrecht Group's ‘work engagement’ construct and measure, and by the theorization of engagement within the ‘job demands–resources’ framework. Five groups of factors served as antecedents to engagement: psychological states; job design; leadership; organizational and team factors; and organizational interventions. Engagement was found to be positively associated with individual morale, task performance, extra-role performance and organizational performance, and the evidence was most robust in relation to task performance. However, there was an over-reliance on quantitative, cross-sectional and self-report studies within the field, which limited claims of causality. To address controversies over the commonly used measures and concepts in the field and gaps in the evidence-base, the authors set out an agenda for future research that integrates emerging critical sociological perspectives on engagement with the psychological perspectives that currently dominate the field.

Detecting expressions of blame or praise in text

The growth of social networking platforms has drawn a lot of attentions to the need for social computing. Social computing utilises human insights for computational tasks as well as design of systems that support social behaviours and interactions. One of the key aspects of social computing is the ability to attribute responsibility such as blame or praise to social events. This ability helps an intelligent entity account and understand other intelligent entities’ social behaviours, and enriches both the social functionalities and cognitive aspects of intelligent agents. In this paper, we present an approach with a model for blame and praise detection in text. We build our model based on various theories of blame and include in our model features used by humans determining judgment such as moral agent causality, foreknowledge, intentionality and coercion. An annotated corpus has been created for the task of blame and praise detection from text. The experimental results show that while our model gives similar results compared to supervised classifiers on classifying text as blame, praise or others, it outperforms supervised classifiers on more finer-grained classification of determining the direction of blame and praise, i.e., self-blame, blame-others, self-praise or praise-others, despite not using labelled training data.

Les retraductions françaises d'Al Moqqadima d'Ibn Khaldoun : étude paratextuelle des retraductions de Vincent-Mansour Monteil (1967) et d’Abdesselam Cheddadi (2002)

Ce mémoire porte sur les retraductions françaises du XXe siècle d’Al Moqaddima (Les Prolégomènes) (1377) d’Ibn Khaldoun, un traité historique et philosophique du XIVe siècle. La première traduction française, Les Prolégomènes, est réalisée par De Slane entre 1840 et 1863. Elle est suivie de deux retraductions, à savoir Discours sur l’histoire universelle (1967- 1968) réalisée par Vincent-Mansour Monteil, et Le Livre des Exemples I : Autobiographie, La Muqaddima (2002) réalisée par Abdesselam Cheddadi. L’objet de ce mémoire est de mener une analyse contextuelle, paratextuelle et discursive de ces deux retraductions de l’œuvre monumentale d’Ibn Khaldoun, afin de dégager les principaux facteurs déterminant, dans chaque cas, le choix de retraduire. Notre approche théorique s’inscrit dans le contexte récent de remise en cause de ladite « hypothèse de la retraduction » d’Antoine Berman, qui privilégie une analyse textuelle de l’œuvre (re)traduite en négligeant quelque peu l’analyse contextuelle éclairant les conditions de production des retraductions, et en limitant le positionnement du traducteur à sa relation envers la « vérité » du texte source. Ainsi, en retraçant l’histoire des différentes éditions des Prolégomènes au XXe siècle, en exposant le contexte qui entoure les retraductions, et en nous nous attachant aux stratégies discursives déployées par les traducteurs en marge de ces dernières, nous tenons compte des réflexions récentes sur les « causalités multiples » du phénomène de la retraduction, tout en montrant comment la subjectivité du traducteur, ses décisions et ses motivations sont reliées à tous les éléments extratextuels ou contextuels mis en valeur par les théoriciens. Nous montrons par notre analyse que les deux retraductions au corpus sont motivées par des facteurs internes au texte (tels que l’authenticité de leur original, une meilleure connaissance du texte, de la langue et de la culture source, la nécessité de corriger des erreurs dans les traductions antérieures), mais aussi par de nouveaux éléments externes au texte (tels que le changement de normes sociales, littéraires et traductionnelles, l’émergence de nouvelles interprétations du texte, le positionnement idéologique du retraducteur, sa volonté de s’imposer comme une autorité, etc.). La retraduction s’avère donc un phénomène complexe motivé par une combinaison de facteurs, à la fois internes (textuels), externes (contextuels) et personnels, propres au (re)traducteur.