نتایج جستجو برای: precipitating factors
تعداد نتایج: 1080864 فیلتر نتایج به سال:
BACKGROUND Several studies bring evidence that action observation elicits contagious responses during social interactions. However automatic imitative tendencies are generally inhibited and it remains unclear in which conditions mere action observation triggers motor behaviours. In this study, we addressed the question of contagious postural responses when observing human imbalance. METHODOLO...
A metastable Mn(IV) tris(N,N')diphenylhydrazide complex, Li(2)Mn(κ(2)-N(2)Ph(2))(3) (1) has been prepared, and characterized by X-ray diffraction analysis and spectroscopic techniques. Mn precursors are reacted with LiNH(t)Bu to form an intermediate manganese-imido mixture, which reacts with N,N'-diphenylhydrazine, oxidizing the metal, and forming 1. Despite ease of formation, 1 is poised for r...
By photopolymerizing liquid crystal shells, their rich variety of self-assembled structures can be rendered permanent and the lifetime extended from days to months, without removing the characteristic responsiveness. If polymerization is carried out close to either boundary of the nematic phase, the process triggers the transition into the adjacent phase, to higher or to lower degree of order.
Worldwide studies in the last decade have measured the rate of cognitive decline in the elderly population, mainly in Australia, Europe, United States, and Canada. In Mexico, this information is very limited and the population of Hidalgo State has never been studied. Therefore, we decided to perform a transversal study to determine the rate of cognitive decline in this region. We will present a...
Analyses of human learning reveal a discrepancy between the long- and the short-term effects of outcomes on subsequent choice. The long-term effect is simple: favorable outcomes increase the choice rate of an alternative whereas unfavorable outcomes decrease it. The short-term effects are more complex. Favorable outcomes can decrease the choice rate of the best option. This pattern violates the...
The leading models of human and animal learning rest on the assumption that individuals tend to select the alternatives that led to the best recent outcomes. The current research highlights three boundaries of this "recency" assumption. Analysis of the stock market and simple laboratory experiments suggests that positively surprising obtained payoffs, and negatively surprising forgone payoffs r...
We have previously derived a theoretical measure of neural complexity (CN) in an attempt to characterize functional connectivity in the brain. CN measures the amount and heterogeneity of statistical correlations within a neural system in terms of the mutual information between subsets of its units. CN was initially used to characterize the functional connectivity of a neural system isolated fro...
1 Current Issues in Presupposition Theory 2 1.1 Basic Phenomena . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 Semantics vs. Pragmatics and Explanatory Challenges . . . . . . 5 1.2.1 The Triggering Problem . . . . . . . . . . . . . . . . . . . 6 1.2.2 The Projection Problem . . . . . . . . . . . . . . . . . . . 8 1.3 Distinguishing Types of Presupposition Triggers . . . . . . . . . 11
Multistage carcinogenesis models describe the evolution of the cells in an individual's organ from a normal stage to a pre-neoplastic stage to a neoplastic stage. The triggers for the passage from one stage to the next one are presumed to be genetic alterations, which are not only governed by purely random events but also by individual environmental and genetic factors. We generalize existing m...
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