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1. Verfasser:	Julio Agustín Varela Barraza
Format:	Artículo científico
Sprache:	es
Veröffentlicht:	Sociedad Mexicana de Psicología A.C. 2010
Schlagworte:	Psicología atención interacción cotidianidad uso de power point Formación académica
Online-Zugang:	https://www.redalyc.org/articulo.oa?id=243016324009
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El maestro y el alumno ante la tecnología: ¿Efectos deseados? Julio Agustín Varela Barraza Psicología atención interacción cotidianidad uso de power point Formación académica Se critica el empleo que en general se ha dado a la tecnología ya que muchas prácticas de los docentes sólo han servido para simular un avance en la calidad de la educación. En los alumnos, además de diversos problemas causados por los largos periodos de uso, se destaca que los periodos atencionales son muy breves, lo que compite con las prácticas escolares. Se sugiere una evaluación cuidadosa antes de seguir adquiriendo tecnología y adaptando a ésta las actividades escolares. 2010 artículo científico 0185-6073 https://www.redalyc.org/articulo.oa?id=243016324009 es http://www.redalyc.org/revista.oa?id=2430 Revista Mexicana de Psicología application/pdf Sociedad Mexicana de Psicología A.C. Revista Mexicana de Psicología (México) Num.2 Vol.27

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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