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Search Results: 1 - 10 of 1419 matches for " Viviana Egidi "
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Life expectancy: complex measures of the length and the health related quality of life
Viviana Egidi,Daniele Spizzichino
Italian Journal of Public Health , 2008, DOI: 10.2427/5834
Abstract: Background: Life expectancy is one of the most frequently used indicators to assess mortality and the health of a population. It is a synthetic measure of mortality, which has the advantage of allowing for comparisons over time and between different groups, while eliminating the influence of the age structure of the population. Life expectancy has the advantage of being very easy to understand, although it needs to be interpreted within the context of the complex system of hypothesis that generates it. This is even more important for health expectancies and health gap measures, which are synthetic indicators that take into account both survival and health condition of a population. Methods: It is given a description of the most frequently used methods to calculate life expectancy, health expectancies and health gap measures. Measures of health expectancy are disability free life expectancy and healthy life expectancy. As health gap measures, frequently are used DALYs (Disability Adjusted Life Years). Discussion: There are various bodies and central government agencies that either have management data or carry out statistical systematic surveys and disability surveys. Statistically speaking, the worst aspect of this scenario is that it creates confusion and uncertainty among the end users of this data, namely the policy makers. At an international level the statistical data on disability is scarcely comparable among countries, despite huge efforts on the part of international organisations to harmonize classifications and definitions of disability. Results and Conclusions: There are several methods to compute life expectancy, each of these has some advantages and some disadvantages. Usually life expectancy is used also to account for the health status of population. Actually with the growing role of chronic and degenerative diseases, the increased number of years lived are potentially independent from increase in health status of the population. Quantity and quality of live are not anymore strictly related, then a higher quantity of life does not equate to a better quality of life. For this reason are used health expectancies measures that are very useful morbidity-mortality indicators able to summarize information on quantity and quality of the years lived.
Geographical mortality patterns in Italy: A Bayesian analysis
Fabio Divino,Viviana Egidi,Michele Antonio Salvatore
Demographic Research , 2009,
Abstract: In this paper, we present a hierarchical spatial model for the analysis of geographical variation in mortality between the Italian provinces in the year 2001, according to gender, age class, and cause of death. When analysing counts data specific to geographical locations, classical empirical rates or standardised mortality ratios may produce estimates that show a very high level of overdispersion due to the effect of spatial autocorrelation among the observations, and due to the presence of heterogeneity among the population sizes. We adopt a Bayesian approach and a Markov chain Monte Carlo computation with the goal of making more consistent inferences about the quantities of interest. While considering information for the year 1991, we also take into account a temporal effect from the previous geographical pattern. Results have demonstrated the flexibility of our proposal in evaluating specific aspects of a counts spatial process, such as the clustering effect and the heterogeneity effect.
Pestov's Identity on frame bundles and applications
Michela Egidi
Mathematics , 2014,
Abstract: In this article we lift Pestov's Identity on the tangent bundle of a Riemannian manifold $M$ to the bundle of $k$-tuples of tangent vectors. We also derive an integrated version and a restriction to the frame bundle $P^kM$ of $k$-frames. Finally, we discuss a dynamical application for the parallel transport on $\mathcal{G}_{or}^k(M)$, the Grassmannian of oriented $k$-planes of $M$.
Asymptotic behaviour of the Hodge Laplacian spectrum on graph-like manifolds
Michela Egidi,Olaf Post
Mathematics , 2015,
Abstract: We consider a family of compact, oriented and connected Riemannian manifolds shrinking to a metric graph and describe the asymptotic behaviour of the eigenvalues of the Hodge Laplacian. We apply our results to produce manifolds with spectral gaps of arbitrarily large size in the spectrum of the Hodge Laplacian.
Umbilical metastases: current viewpoint
Raimondo Gabriele, Marco Conte, Federico Egidi, Mario Borghese
World Journal of Surgical Oncology , 2005, DOI: 10.1186/1477-7819-3-13
Abstract: A search of Pubmed was carried out using the term 'umblic*' and 'metastases' or metastasis' revealed no references. Another search was made using the term "Sister Joseph's nodule" or sister Joseph nodule" that revealed 99 references. Of these there were 14 review articles, however when the search was limited to English language it yielded only 20 articles. Articles selected from these form the basis of this report along with cross references.The primary lesions usually arise from gastrointestinal or genitourinary tract malignancies and may be the presenting symptom or sign of a primary tumour in an unknown site.A careful evaluation of all umbilical lesions, including an early biopsy if appropriate, is recommended. Recent studies suggest an aggressive surgical approach combined with chemotherapy for such patients may improve survival.Cutaneous metastases localised to the umbilicus are named "Sister Mary Joseph's nodules". In 1949 Sir Hamilton Bailey initially used this eponym in his book "Physical Signs in Clinical Surgery" to describe umbilical metastases, in honour of Sister Mary Joseph, the superintendent nurse and surgical assistant of Dr. William Mayo at St. Mary's Hospital in Rochester (presently the Mayo Clinic in Minnesota, USA). Sister Mary Joseph was the first to note the link between umbilical nodules and intra abdominal malignancy [1-4].The occurrence of cutaneous metastases from malignant neoplasms occurs in from 1% to up to 9% of individuals, as determined at autopsy. Those metastases to the umbilicus are uncommon and represent only 10% of all secondary tumours which have spread to the skin [5,6]. Epidemiological studies showed that this condition predominates in females [7].From a review of the literature, umbilical neoplastic nodules can be due to a primary tumour in 38% of cases, due to endometriosis in 32% of individuals, and in 30% are actually secondary tumour deposits from a primary tumour elsewhere [8]. If these nodules are secondary tumour depo
Flexural Performance of I-Joist Fabricated with Glue-Laminated Bamboo and Gmelina arborea Plywood  [PDF]
Viviana Paniagua, Róger Moya
Open Journal of Civil Engineering (OJCE) , 2014, DOI: 10.4236/ojce.2014.43018
Abstract:

The search for efficient and versatile structural elements, leads to the fabrication of I-joists (6.5 cm × 18.5 cm × 600 cm (width × depth × length) with glue-laminated bamboo (Guada angustifolia) in the flanges and Gmelina arborea 12-mm structural plywood in the web. The results showed a modulus of rupture (MOR) of 39.45 MPa and an effective modulus of elasticity (MOE) of 17.05 GPa. Shearing in the glue line was 5.95 MPa and the lamination strength was 6.45 MPa. Structural design values averaged 9.43 MPa for bending and 4.72 MPa in shear according to Costa Rican structural standards. Both resistance value (flexure and shear) were considered satisfactory for structural proposes and I-joists fabricated with bamboo and G. arborea plywood are comparable with the Andean classification group “C” structural grade. The use of this I-joist was also shown in roofing and flooring systems. This beam can be used in allowable spans from 2 to 4 m in span for flooring systems and from 5 to 7 m for roofing applications.

Características de personalidad infantil asociadas al riesgo ambiental por situación de pobreza
Lemos,Viviana;
Interdisciplinaria , 2009,
Abstract: an individual's context affects the way in which their biological and psychological subsystems function and interacts with each other. while individuals are normally able to manipulate their environment, personality factors increase or diminish their context characteristics, which at the same time influence personality. heredity and socio-environmental personality factors should not be considered separate elements, but rather a holistic approach as an individual-environment system that functions as a whole. therefore, an unfavorable environment is a socio-environmental variable that interacts with children's heredity, thus influencing the development of certain personality traits. based on the above, the specific goal of our research was to compare personality characteristics of children at risk due to poverty and children without risk due to poverty. we applied the child personality questionnaire for argentina (cuestionario argentino de personalidad infantil - capi) for children aged 6 to 8 (lemos, 2005). we compared personality profiles from both groups through manova, as well as comparisons of means and graphic profiles. based on this analysis, we observed significant differences regarding personality factors [f de hotelling (5, 168) = 2.47; p = .035], as well as facets [f de hotelling (14, 159) = 2.607; p = .002], among children at risk due to poverty and those who were not. there were significant differences particularly in conscientiousness [f(1) = 4.35; p = .038] and the following facets: competence [f(1) = 4.652; p = .032], vulnerability [f(1) = 9.732; p = .002], gregariousness and positive affect [f(1) = 8.338; p = .004], order [f(1) = 6.798; p = .010] and action [f(1) = 4.233; p = .041]. the tendencies of the results are as follows: the group at risk scored lower in conscientiousness, and regarding facets: competence, gregariousness, positive affect, order, action and vulnerability. with regards to conscientiousness, which includes order, organization and
Construcción y validación de una escala para la evaluación de la deseabilidad social infantil (EDESI)
Lemos,Viviana;
Interdisciplinaria , 2005,
Abstract: personality assessment verbal tests are often considered objectives taking into account the standardized nature of verbal stimuli utilized and response options, the transformation of punctuations to typical, and the objective valuation of the test (fernández-ballesteros, 2000). nevertheless, this supposedly objective valuation is subordinated to some problems and limitations. some of these are: random responses, in which the individual follows a pattern of response not determined by the content of items, dissimulation or feigning, with which the subject tries to misrepresent his answers to hide information or distort it; the subjects response style, which means the individual chooses to be moderate or extreme, positive or negative in the way he answers; and last we refer to the social desirability which makes the subject respond approximating his answers to those considered socially more desirable. this psychological tendency of attributing socially desirable personality traits to oneself and rejecting those that are socially undesirable produces a distorting effect that, if taken to extreme, can invalidate a psychological measurement. in a previous research (lemos, 2003), it was observed that children are very prone to give socially expected answers with the aim of pleasing others. this is the reason why it was judged important to design a scale, which may assess social desirability in children, since such an instrument is not available in our environment. a sample of 141 middle class children of both sexes between 10 and 12 years old of entre ríos ( argentina ) was employed. for the instrument's psychometric analysis, discriminating power of items was considered in the first place, analyzing the distribution of given responses with frequency analysis, considering discriminating those items that didn't exceed 75% of adhesion to one of the two response options ( yes-no ). with the same purpose, a t -test, mean difference, was also applied to compare the answers give
Tragedia, oratoria y oralidad: Fórmulas retóricas en un proceso judicial (Esquilo, Euménides)
Gastaldi,Viviana;
Synthesis (La Plata) , 2003,
Abstract: in oratory and aeschylean drama, the rhetoric patterns used in the public debate -as common elements of an oral culture- show not only the relationships between poet and orator in matters related to vocabulary or subjects discussed in these fields; in eumenides, reveal in a particular way the rules and social values that define the cultural context of punishment.
Baudelaire mau vidraceiro
Bosi, Viviana;
Alea : Estudos Neolatinos , 2007, DOI: 10.1590/S1517-106X2007000100008
Abstract: baudelaire?s theoretical and poetic work deals repeatedly with the question of representation, either critizing the "brickmason?s" realism, or a certain kind of sugary romanticism. in paris spleen: little prose poems, this discussion assumes an ethical configuration, when, in "the bad glazier", the poet rebels against the mechanism of reproduction itself, both from the artistical point of view and from the social point of view. comparing this text with the one written by his friend and publisher arsène houssaye, who had published his poem in prose "the glazier?s song" about a similar theme, we may notice that two conceptions of mimesis are conveyed, each one revealing a very different perspective on poetics and life.
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