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Bibliographic Details
Main Author:	Vicente Royuela
Format:	Artículo científico
Language:	es
Published:	Universidad de Málaga 2009
Subjects:	Estudios Territoriales Calidad de vida Economía urbana
Online Access:	https://www.redalyc.org/articulo.oa?id=75511762003
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El crecimiento de las ciudades y de la calidad de vida en la provincia de Barcelona, desde una perspectiva de causalidad mutua Vicente Royuela Alessandra Faggian Estudios Territoriales Calidad de vida Economía urbana En este trabajo nos fijamos en los cambios intra-metropolitanos en la distribución de la población. Usamos los determinantes clásicos del crecimiento urbano para determinar su importancia dentro de un área metropolitana. Estos determinantes son: la calidad de vida; la aproximación dinámica orientada a la oferta; y el paradigma de la ciudad en red. En particular nos fijamos en el papel de las variables de calidad de vida en el crecimiento urbano. En este sentido, como esperamos una potencial endogeneidad entre los crecimientos de la calidad de vida y del tamaño de las ciudades, usamos un modelo de ecuaciones simultáneas. Estimamos nuestro modelo en un entorno local y dinámico, la provincia de Barcelona en el período 1991-2004. 2009 artículo científico 0213-7585 https://www.redalyc.org/articulo.oa?id=75511762003 es http://www.redalyc.org/revista.oa?id=755 Revista de Estudios Regionales application/pdf Universidad de Málaga Revista de Estudios Regionales (España) Num.85

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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