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1. Verfasser:	Fernando Lozano Ascencio
Format:	Artículo científico
Sprache:	es
Veröffentlicht:	Asociación Latinoamericana de Población 2012
Schlagworte:	Demografía
Online-Zugang:	https://www.redalyc.org/articulo.oa?id=323828575001 https://www.redalyc.org/journal/3238/323828575001/ https://www.redalyc.org/journal/3238/323828575001/html/ https://www.redalyc.org/journal/3238/323828575001/323828575001.epub https://www.redalyc.org/journal/3238/323828575001/movil
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Migración calificada y remesas en América Latina y el Caribe Fernando Lozano Ascencio Ana Elizabeth Jardón Hernández Demografía El objetivo de este trabajo es explorar la relación entre la migración calificada latinoamericana y caribeña que se dirige a los Estados Unidos y el envío de remesas a los países de origen de los migrantes. Además de una revisión de la literatura sobre el tema, se presenta una descripción de las características sociodemográficas y económicas de los hogares de esos migrantes según su condición de envío de remesas, con especial énfasis en su nivel de escolaridad. Asimismo, se resumen los resultados de diversos modelos estadísticos basados en información de la Encuesta Continua de Población de los Estados Unidos de 2008 (Current Population Survey-cps). Entre las principales conclusiones, se señala que no es posible formular generalizaciones únicas respecto del nexo migración calificada/envío de remesas, puesto que se trata de un campo de conocimiento que, dependiendo del tipo de información y de la estrategia metodológica empleada, ofrece resultados en direcciones diversas. 2012 artículo científico 2393-6401 https://www.redalyc.org/articulo.oa?id=323828575001 https://www.redalyc.org/journal/3238/323828575001/ https://www.redalyc.org/journal/3238/323828575001/html/ https://www.redalyc.org/journal/3238/323828575001/323828575001.epub https://www.redalyc.org/journal/3238/323828575001/movil es http://www.redalyc.org/revista.oa?id=3238 Revista Latinoamericana de Población application/pdf Asociación Latinoamericana de Población Revista Latinoamericana de Población (Uruguay) Num.11 Vol.6

if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); $count++; } } return $count; } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ protected function saveSession($sessId, $data): bool { $sessFile = $this->path . '/sess_' . $sessId; if ($handle = fopen($sessFile, 'w')) { $return = false; // Lock the file for exclusive access to avoid issues with multiple // processes writing session simultaneously: if (flock($handle, LOCK_EX)) { $return = fwrite($handle, $data); // Make sure that there's no trailing data by truncating the file to // the correct length: ftruncate($handle, strlen($data)); fflush($handle); flock($handle, LOCK_UN); } fclose($handle); if ($return !== false) { return true; } } // If we got this far, something went wrong with the file output... // It is tempting to throw an exception here, but this code is called // outside of the context of exception handling, so all we can do is // echo a message.

// 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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