Weak topologies for Carath\'eodory differential equations. Continuous dependence, exponential Dichotomy and attractors

We introduce new weak topologies and spaces of Carath\'eodory functions where the solutions of the ordinary differential equations depend continuously on the initial data and vector fields. The induced local skew-product flow is proved to be continuous, and a notion of linearized skew-product flow is provided. Two applications are shown. First, the propagation of the exponential dichotomy over the trajectories of the linearized skew-product flow and the structure of the dichotomy or Sacker-Sell spectrum. Second, how particular bounded absorbing sets for the process defined by a Carath\'eodory vector field $f$ provide bounded pullback attractors for the processes with vector fields in the alpha-limit set, the omega-limit set or the whole hull of $f$. Conditions for the existence of a pullback or a global attractor for the skew-product semiflow, as well as application examples are also given.Comment: 34 page

Espiritual pero no religiosa: la cultura de la transformación personal

This study analyzes the development of a culture of personal transformation in contemporary societies, showing its forms and orientations, and pointing to the factors that favor its development. This new culture unifies psychology and spirituality, emphasizes the transformational power of the experience of transcendence, and flourishes in an heterogeneous and loosely organized milieu driven by trends toward individualization and hybridization. The interpretative hypothesis is that this cultural development is a response to a societal change at the level of the individual: the expansion of the self. The culture of personal transformation can be explained as a response to the existential turmoil that is inherent to the expansion of the self.En este estudio se analiza la relevancia cultural que ha adquirido el tema de la transformación personal en las sociedades contemporáneas, analizando las orientaciones que adopta y los factores que lo propician. La nueva cultura de la transformación personal unifica psicología y espiritualidad, enfatiza el poder transformador de las experiencias de trascendencia y florece en un milieu heterogéneo y flojamente organizado donde dominan la orientación individualizadora y la hibridación de enfoques y tradiciones. En el estudio se avanza la hipótesis interpretativa de que este desarrollo cultural es una respuesta a un proceso de cambio societal en el nivel del individuo al que denominamos la expansión del yo. El vínculo entre la expansión del yo y la cultura de la transformación personal es el malestar existencial que es inherente a la expansión del yo, para el que la cultura de la transformación personal provee una respuesta

The relationship between suspended sediment concentration and remotely sensed spectral radiance - a review

Information on the concentration of suspended sediments in coastal waters is necessary for the understanding and management of the coastal environment. Traditionally, suspended sediment concentration (SSC) has been measured by time-consuming and costly boat surveys which allow the accurate measurement of SSC for single points in space and time. Remote sensing from airborne and spaceborne sensors has proved to be a useful adjunct to such surveys as it provides an instantaneous and synoptic view of sediments that would otherwise be unavailable. The key to the success of remote sensing in such a role is the strong positive relationship that exists between SSC and remotely sensed spectral radiance (L(x)). This review provides an introduction to this SSC/L(x) relationship; exploring its physical basis, its robustness under a range of environmental conditions and its utility as a tool for estimation. It is concluded that future research on this relationship should concentrate upon the suppression of environmental influences and the optimum sampling of SSC

Topographic studies through texture image analysis of LANDSAT data

There are no author-identified significant results in this report

Use of LANDSAT data to monitor pasture project in Amazonia

The author has identified the following significant results. No differences were found between acreage evaluation by visual and automatic interpretation of LANDSAT images. It was necessary to interpret both channels 5 and 7 to exactly outline the deforested areas. Channel 7 was necessary for the identification of deforested areas in the presence of recently grown natural vegetation, and channel 5 was necessary to identify the deforested areas in the cerrado regions. Automatic interpretation permitted the discrimination between areas with predominant grass coverage and recently grown natural vegetation

Nuove linee guida americane 2013 ACC/AHA sul trattamento del colesterolo plasmatico per ridurre il rischio cardiovascolare aterosclerotico: confronto con le raccomandazioni ESC/EAS per la gestione delle dislipidemie

No abstract availabl

Accounting for the assimilative capacity of water systems in Scotland

A key methodological challenge in understanding the relationship between the economy and the underlying ecosystem base resides in how to account for the ecosystem’s degradation and the decline of associated ecosystem services. In this study, we use information on nutrients and metals concentrations from the Environmental Change Network (ECN) database and the Scottish Environment Protection Agency (SEPA) for the period 2000–2010 in order to assess the assimilation capacity of water systems. The research covers five upstream sites and 17 downstream sites in northeast Scotland. Our results highlight the relevance of considering a number of pollutants, and suggest that elements such as arsenic, lead and mercury can pose a threat to ecosystems’ sustainability and health. However, little research has been done in terms of their assimilation capacity and their impact on grey water footprint assessments. In addition, the results indicate that background conditions might be relevant when performing sustainability analysis at different spatial scales. The study also poses relevant questions in relation to land management approaches versus traditional ‘end-of-pipe’ water treatment approaches, and the definition of maximum and background concentrations. In this regard, further studies will be required to understand the trade-offs between different ecosystem services depending on how these concentrations are defined

Bibliografia de fertilidade de solos e nutrição da seringueira.

Esta bibliografia que representa uma coletânea geral de trabalhos com fertilidade de solos e nutrição de seringueira.bitstream/item/211082/1/Bibliografia-de-fertilidade-de-solos-completo.pd

Optimizing the production and processing of fibre reinforced thermoplastic pre-impregnated materials

The aim of this work is to optimize the production of new continuous carbon fibres reinforced polypropylene matrix pre-impregnated materials (towpregs) continuously processed by dry deposition of polypropylene (PP) powder. The processing of the produced towpregs by pultrusion using a prototype equipment was also optimized. The method of Taguchi/DOE (Design of Experiments) was used to achieve this goal allowing improved choices of processing windows. Towpregs were characterized by scanning electron microscopy (SEM), visual analysis and their polymer mass contents were also determined. The final pultruded composite profiles were also submitted to tensile, interlaminar, flexural, calcination and optical microscopy tests.(undefined