منابع مشابه
Artur Avila and Marcelo Viana
We exhibit an explicit sufficient condition for the Lyapunov exponents of a linear cocycle over a Markov map to have multiplicity 1. This builds on work of Guivarc’h-Raugi and Gol’dsheid-Margulis, who considered products of random matrices, and of Bonatti-Viana, who dealt with the case when the base dynamics is a subshift of finite type. Here the Markov structure may have infinitely many symbol...
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Currently, one of the main threats to public health is diabetes mellitus. Its most detrimental complication is diabetic nephropathy (DN), a clinical syndrome associated with kidney damage and an increased risk of cardiovascular disease. Irrespective of the type of diabetes, DN follows a well-known temporal course. The earliest detectable signs are microalbuminuria and histopathological changes ...
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Design Principles for XML Data Marcelo Arenas Doctor of Philosophy Graduate Department of Computer Science University of Toronto 2005 In this dissertation, we take a first step towards the design and normalization theory for XML documents. We start by noticing that while in the relational world the criteria for being well designed are very intuitive, they become more obscure when one moves to X...
متن کاملComposition with Target Constraints ∗ Marcelo Arenas
It is known that the composition of schema mappings, each specified by source-to-target tgds (st-tgds), can be specified by a second-order tgd (SO tgd). We consider the question of what happens when target constraints are allowed. Specifically, we consider the question of specifying the composition of standard schema mappings (those specified by st-tgds, target egds, and a weakly acyclic set of...
متن کاملRICHARD TYLER ( USA ) and CLAUDIA BARROS COELHO ( Brazil )
BACKGROUND: Subjective tinnitus is the perception of a sound in the absence of any physical source. It has been shown that tinnitus is associated with hyperactivity of the auditory cortices. Accompanying this hyperactivity, changes in non-auditory brain structures have also been reported. However, there have been no studies on the long-range information flow between these regions. RESULTS: Usin...
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ژورنال
عنوان ژورنال: Teresa
سال: 2010
ISSN: 2447-8997,1517-9737
DOI: 10.11606/issn.2447-8997.teresa.2010.116829