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Bibliographic Details
Main Author:	Alfonso Gumucio Dagron
Format:	Artículo científico
Language:	es
Published:	Universidad del Norte 2004
Subjects:	Sociología Comunicación cambio social desarrollo social perfil del comunicador
Online Access:	https://www.redalyc.org/articulo.oa?id=26800101
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El cuarto mosquetero: la comunicación para el cambio social Alfonso Gumucio Dagron Sociología Comunicación cambio social desarrollo social perfil del comunicador Este artículo presenta una reflexión en relación con las diferentesfases o «tiempos» que, a juicio del autor, han influenciado la aplicaciónde la comunicación a estrategias de desarrollo, mostrando lamanera como estos enfoques han permeado la utilización de la comunicacióndesde los organismos de cooperación internacional. Paraello el autor se basa en estudios realizados sobre el tema y su experienciacomo consultor internacional en el campo. En este contexto,se presenta la pobre valoración que se le ha dado a la comunicacióncomo estrategia de desarrollo y el papel que la academia ha jugadoen el mismo. Finalmente, se describe el perfil de un nuevocomunicador, enfatizando en la perspectiva de la Comunicación parael Cambio Social. 2004 artículo científico 0121-3261 https://www.redalyc.org/articulo.oa?id=26800101 es http://www.redalyc.org/revista.oa?id=268 Investigación & Desarrollo application/pdf Universidad del Norte Investigación & Desarrollo (Colombia) Num.1 Vol.12

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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