La fraseología en la clase de lengua extranjera: ¿misión imposible?

En este artículo ofrecemos una perspectiva diferente del aprendizaje y la enseñanza de la fraseología en clase de lengua extranjera (LE). Partiendo de la premisa sobre el carácter eminentemente holístico del lenguaje, concebimos las unidades fraseológicas (UF) como elementos habituales e inherentes en la comunicación verbal, por lo que no pueden excluirse del proceso de adquisición de la competencia comunicativa en una LE. Nuestra propuesta consiste en partir de la fraseología para optimizar el desarrollo de diversas subcompetencias de la competencia comunicativa. Para ello, resulta imprescindible indagar en la configuración y el funcionamiento del significado fraseológico, que, según defendemos en este trabajo, conforma un conjunto de informaciones de diversa índole que se articulan en dos niveles, el semántico y el pragmático. Tal indagación permite desarrollar una serie de consideraciones con interesantes implicaciones didácticas.

Fraseodidáctica: a fraseoloxía para a didáctica

In this article it is offered a different view of the role of phraseology in the foreign language class. Considering the holistic nature of language, phraseological units are conceived as inherent elements in the verbal communication, which confirms its importance in the formation process of the communicative competence in a foreign language. With attention to the modular conceptions of the communicative competence (Canale 1983) and of the phraseological meaning (Timofeeva 2012), it is proposed conceiving the phraseology as a starting point for developing the different parts of communicative competence. As it is explained, phraseological meaning is conformed by several informational chunks articulated in two levels, the semantic and the pragmatic. The connexions between these chunks and the parts of communicative competence allow to use more effectively the phraseological contents for the foreign language learning and teaching.

Granger causality and systemic risk

Building on the concept of Granger causality in risk in Hong et al. (2009), and focusing on an international sample of large-capitalization banks, we test for predictability in comovements in the left tails of returns of individual banks and the global system. The main results show that large individual shocks (defined as balance-sheet contractions exceeding the 1% VaR level) are a strong predictor of subsequent shocks in the global system. This evidence is particularly strong for US banks with large desks of proprietary trading. Similarly, we document strong evidence of financial vulnerabilities (exposures) to systemic shocks in US subprime creditors.

A Quantile-Based Probabilistic Mean Value Theorem

For non-negative random variables with finite means we introduce an analogous of the equilibrium residual-lifetime distribution based on the quantile function. This allows us to construct new distributions with support (0, 1), and to obtain a new quantile-based version of the probabilistic generalization of Taylor's theorem. Similarly, for pairs of stochastically ordered random variables we come to a new quantile-based form of the probabilistic mean value theorem. The latter involves a distribution that generalizes the Lorenz curve. We investigate the special case of proportional quantile functions and apply the given results to various models based on classes of distributions and measures of risk theory. Motivated by some stochastic comparisons, we also introduce the “expected reversed proportional shortfall order”, and a new characterization of random lifetimes involving the reversed hazard rate function.