4,509 research outputs found
Aval de la corte al matrimonio igualitario es solo el principio
Un recuento de los caminos que han tomado las distintas entidades federativas de México con respecto al tema del matrimonio entre parejas del mismo sexo.ITESO, A.C
Recommended from our members
Allostatic Load in Relation to Periodontal Disease, Tooth Loss, and Mortality: Findings from the 1914 Glostrup Aging Study
As the proportion of adults aged 65 years and older continues to grow across the globe and edentulism rates decline, there is widespread concern about a rise in the prevalence of periodontal disease, characterized by chronic inflammation of tooth-supporting tissues induced by persistent infection. Compared to their younger counterparts, older adults experience a higher burden of periodontal disease, which can result in tooth loss, poor nutritional intake, higher prevalence of other chronic diseases, and a decrease in overall quality of life. While cross-sectional studies have underscored the role of chronic stress on periodontal disease progression in older adults, longitudinal evidence is currently lacking. This dissertation draws on prospective data from a birth cohort of older Danish adults (1914 Glostrup Aging Study) with 25 years of follow-up. Using physiological markers than span the metabolic, inflammatory, and cardiovascular systems, I developed a composite measure of allostatic load (AL) at age 80, defined as the cumulative biological damage that results from a whole-body adaptation to chronic stress. First, I identified social and behavioral predictors of high scores on AL. In men, those with no vocational training, unskilled occupation, low income, and a sedentary lifestyle were more likely to have high AL, consistent with a "weathering" pattern of biological systems resulting from chronic adversity over the life course. To test the hypothesis that high AL is longitudinally associated with periodontal disease, I evaluated bidirectional longitudinal associations using multiple measures of AL and periodontal disease. Results showed a positive nonlinear association of AL at age 70 with periodontal disease at age 85, but no association between periodontal disease at age 70 with AL at age 80. This finding confirms previous cross-sectional data, and supports the role of chronic stress on infection-induced inflammation. To test the hypothesis that high AL is associated with mortality risk, I examined this association longitudinally from ages 70 - 95. Compared to low AL, high AL was positively associated with all-cause mortality, and even stronger when cardiovascular disease mortality was considered. AL-mortality associations were higher among those who were dentate as compared to edentate, suggesting that dentate status modifies the relationship. Findings from this dissertation contribute to our understanding of the consequences of stress on periodontal disease in relation to aging and offer potential avenues for intervention
Spanning tree invariants, loop systems and doubly stochastic matrices
AbstractThe spanning tree invariant of Lind and Tuncel [12] is observed in the context of loop systems of Markov chains. For n=1,2,3 the spanning tree invariants of the loop systems of a Markov chain determined by an irreducible stochastic (n×n)-matrix P coincide if and only if P is doubly stochastic and, in this case, the common value of the spanning tree invariants of the loop systems is n
Metodología para el Diseño de una Arquitectura de un Sistema Inteligente de Transporte para una Ciudad Intermedia Colombiana
(Eng) Colombia has a high death rate due to traffic accidents, compared to the world reference. In particular, intermediate cities of the
country have a very high death rate due to traffic accidents, much higher than the national rate and large cities rate. Municipal
-
ities and mobility secretariats have tried to solve these problems through the development of technological services, within the
framework of the so-called Intelligent Transportation Systems (ITS). However, in most cases, these services are not based on
an adequate ITS architecture, therefore, interoperability and integration of services is not feasible, generates high costs and its
implementation is complex to carry out. The development of the services is not based on ITS architecture, due to the fact that
this architecture has not been developed. Although there are works related to regional ITS architectural design methodologies,
there is no methodology that considers diverse sources of reference and the particular context of the city. To encourage the de-
velopment of mobility services, using an appropriate ITS architecture, we develop a methodology to design it in an intermediate
city of a developing country. To formulate the methodology, we review the related documentation; we identify best practices; we
consider the scope and context; and finally, we defined a logical process that was easy to implement. The present article details
design methodology that we elaborate and presents the results obtained when applying the methodology in a particular case.
Methodology obtained allowed the design of an ITS architecture for city of
Popayán
, in addition we consider that it serves as
a tool for development of ITS architectures in similar contexts. ITS architecture designed will allow to plan and implement the
mobility services of the city in an appropriate way.(Spa) Colombia presenta una de las más altas tasas de muertes por accidentes de tránsito comparada con el referente mundial. En
particular, las ciudades intermedias del país superan la tasa nacional y la de las grandes ciudades. Las alcaldías y secretarías de
movilidad han intentado solucionar este problema a través del desarrollo de servicios tecnológicos en el marco de los denomi
-
nados Sistemas Inteligentes de Transporte (ITS). Sin embargo, en la mayoría de los casos, estos servicios no están basados en
una arquitectura ITS adecuada, por lo cual, la interoperabilidad e integración de los servicios no resulta factible, genera altos
costos y su implementación resulta compleja de llevar a cabo. El desarrollo de los servicios no utiliza una arquitectura ITS de
referencia debido a que ésta no ha sido desarrollada. Aunque existen trabajos relacionados con metodologías de diseño de arqui-
tecturas ITS regionales, no se cuenta con una metodología que considere diversas fuentes de referencia y el particular contexto
de la ciudad. Para fomentar el desarrollo de servicios de movilidad, utilizando una arquitectura ITS adecuada, desarrollamos una
metodología que permite su diseño en una ciudad intermedia de un país en desarrollo. Para formular la metodología, revisamos
la documentación relacionada; identificamos las mejores prácticas; consideramos el alcance y contexto; y finalmente, definimos
un proceso lógico que fuera sencillo de implementar. El presente artículo detalla la metodología de diseño que elaboramos y
presenta los resultados obtenidos al aplicar la metodología en un caso en particular. La metodología obtenida permitió el diseño
de una arquitectura ITS para la ciudad de Popayán, además consideramos que puede ser utilizada como herramienta para el de-
sarrollo de arquitecturas ITS en contextos similares. La arquitectura ITS diseñada permite planear e implementar los servicios de
movilidad de la ciudad de forma adecuada
- …