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Bibliographic Details
Main Author:	Juan Carlos Moreno Brid
Format:	Artículo científico
Language:	es
Published:	Universidad Nacional Autónoma de México 2002
Subjects:	Economía y Finanzas
Online Access:	https://www.redalyc.org/articulo.oa?id=60124001
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Liberalización comercial y la demanda de importaciones en México Juan Carlos Moreno Brid Economía y Finanzas El presente artículo examina en que medida la estrategia de apertura comercial de México, puesta en marcha a partir de 1985-1986, ha provocado un cambio estructu-ral en la demanda de importaciones a nivel agregado. Los resultados aquí obtenidos mediante el análisis econométrico que explícitamente considera la influencia de las restricciones cualitativas a la importación aplicadas por México sugieren que, en efecto, se ha dado una modificación sustancial en parámetros fundamentales de dicha demanda. Más específicamente, detecta un incremento significativo en su elasticidad-ingreso y una disminución en su elasticidad-precio. Tales cambios pue-den ser importantes para consideraciones de política, en particular, pueden servir de base para una mejor estimación de los requerimientos de divisas que México necesi-ta para lograr insertarse en una senda de elevado y sostenido crecimiento. 2002 artículo científico 0185-1667 https://www.redalyc.org/articulo.oa?id=60124001 es http://www.redalyc.org/revista.oa?id=601 Investigación Económica application/pdf Universidad Nacional Autónoma de México Investigación Económica (México) Num.240 Vol.LXII

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// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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