The author's decision to leave religion, after experiencing a profound growth crisis, founded itself in the free action of one, who after walking tenaciously, has extinguished an existential possibility and reached a new realm of understanding about the realities of the consciousness and the universe. The inner freedom encountered to make this kind of decision was the result of a gradual self-confrontation. This author perceived the necessity to dispel the fear associated with questioning his habitual suppositions and to look beyond the limits of the indoctrination he had received. For a long time, while still religious, he named this fearlessness "a quest for wisdom" or "the spirituality of an unsettled heart". Nowadays, in light of the experiences had, he prefers to emphasize the courage to evolve, which requires, five years after the abjuration, the assumption of speaking publicly about the dissidence that was effected. When dissidents of ideologies or institutions start talking or writing about their experiences, it is necessary to observe the kind of motivation and intention implicit in the decision made. The former militant, the former integrant, the former partisan, the former something, in spite of the effort to affirm that they are no longer part of the institution to which they once belonged, may continue to define themselves based on the institution. In this case the person is still a "former" in relation to what they intend to deny. Perhaps, in their eagerness to critically speak out about the reasons underlying their abandonment of a certain idea or organization, they still flaunt the previous condition as a trophy, unfurling the pride of being a "former". The ambiguity in question lies in the fact that the person's point of reference continues to be in the no longer desired way of living or thinking.
Why did migrants from southern Portugal choose Argentina instead of following the traditional path to Brazil? Starting with this question, this book explores how, at the turn of the twentieth century, rural Europeans developed distinctive circuits of transatlantic labor migration linked to diverse immigrant communities in the Americas. It looks at transoceanic moves in the larger context of migration systems, examining their connections and the crucial role of social networks in migrants’ geographic mobility and adaptation. Combining regional and local perspectives on both sides of the Atlantic, Chains of Gold provides a vivid account of the trajectories of migrant men and women as they moved from rural Portugal to contrasting places of settlement in the Argentine pampas and Patagonia.
This book brings together a set of approaches to the study of individual-species ecology based on the analysis of spatial variations of abundance. Distribution ecology assumes that ecological phenomena can be understood when analyzing the extrinsic (environmental) or intrinsic (physiological constraints, population mechanisms) that correlate with this spatial variation. Ecological processes depend on geographical scales, so their analysis requires following environmental heterogeneity. At small scales, the effects of biotic factors of ecosystems are strong, while at large scales, abiotic factors such as climate, govern ecological functioning. Responses of organisms also depend on scales: at small scales, adaptations dominate, i.e. the ability of organisms to respond adaptively using habitat decision rules that maximize their fitness; at large scales, limiting traits dominate, i.e., tolerance ranges to environmental conditions.
This book provides an overview of different topics related to the theory of partial differential equations. Selected exercises are included at the end of each chapter to prepare readers for the “research project for beginners” proposed at the end of the book. It is a valuable resource for advanced graduates and undergraduate students who are interested in specializing in this area. The book is organized in five parts: In Part 1 the authors review the basics and the mathematical prerequisites, presenting two of the most fundamental results in the theory of partial differential equations: the Cauchy-Kovalevskaja theorem and Holmgren's uniqueness theorem in its classical and abstract form. It also introduces the method of characteristics in detail and applies this method to the study of Burger's equation. Part 2 focuses on qualitative properties of solutions to basic partial differential equations, explaining the usual properties of solutions to elliptic, parabolic and hyperbolic equations for the archetypes Laplace equation, heat equation and wave equation as well as the different features of each theory. It also discusses the notion of energy of solutions, a highly effective tool for the treatment of non-stationary or evolution models and shows how to define energies for different models. Part 3 demonstrates how phase space analysis and interpolation techniques are used to prove decay estimates for solutions on and away from the conjugate line. It also examines how terms of lower order (mass or dissipation) or additional regularity of the data may influence expected results. Part 4 addresses semilinear models with power type non-linearity of source and absorbing type in order to determine critical exponents: two well-known critical exponents, the Fujita exponent and the Strauss exponent come into play. Depending on concrete models these critical exponents divide the range of admissible powers in classes which make it possible to prove quite different qualitative properties of solutions, for example, the stability of the zero solution or blow-up behavior of local (in time) solutions. The last part features selected research projects and general background material.
Readers take a panoramic journey in this book through legendary Patagonia, the southernmost region of the Americas and one of the world's most magnificent and varied landscapes. The imagery and wildlife astound.
The author's decision to leave religion, after experiencing a profound growth crisis, founded itself in the free action of one, who after walking tenaciously, has extinguished an existential possibility and reached a new realm of understanding about the realities of the consciousness and the universe. The inner freedom encountered to make this kind of decision was the result of a gradual self-confrontation. This author perceived the necessity to dispel the fear associated with questioning his habitual suppositions and to look beyond the limits of the indoctrination he had received. For a long time, while still religious, he named this fearlessness "a quest for wisdom" or "the spirituality of an unsettled heart". Nowadays, in light of the experiences had, he prefers to emphasize the courage to evolve, which requires, five years after the abjuration, the assumption of speaking publicly about the dissidence that was effected. When dissidents of ideologies or institutions start talking or writing about their experiences, it is necessary to observe the kind of motivation and intention implicit in the decision made. The former militant, the former integrant, the former partisan, the former something, in spite of the effort to affirm that they are no longer part of the institution to which they once belonged, may continue to define themselves based on the institution. In this case the person is still a "former" in relation to what they intend to deny. Perhaps, in their eagerness to critically speak out about the reasons underlying their abandonment of a certain idea or organization, they still flaunt the previous condition as a trophy, unfurling the pride of being a "former". The ambiguity in question lies in the fact that the person's point of reference continues to be in the no longer desired way of living or thinking.
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