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Bibliographic Details
Main Author:	Tom Wilson
Format:	Artículo científico
Language:	es
Published:	Universidad de Murcia 1999
Subjects:	Ciencias de la Información diseño de sistemas modelado cognitivo modelado de sistemas sistemas de información tecnologías de la información
Online Access:	https://www.redalyc.org/articulo.oa?id=63500206
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El modelado orientado al usuario: una perspectiva global Tom Wilson Ciencias de la Información diseño de sistemas modelado cognitivo modelado de sistemas sistemas de información tecnologías de la información La utilización de las tecnologías de la información en la planificación ydiseño de sistemas de información sobrepasa, actualmente, el alcance de un simple problema técnico o tecnológico. Encontramos una gran separación entre las necesidades globales de la organización y la perspectiva de los distintos usuarios del sistema de información. Es claro que tanto las necesidades de cada uno de ellos, tanto en su relación a su situación en la organización como ante los diferentes estilos de aprendizaje, constituyen factores que inciden muy directamente ante sistemas cuya interfaz actúa y responde de forma plana, sea cual fuere el tipo de usuario. Este trabajo presenta una visión en la línea del usuario individual en orden a un desarrollomás propicio de los sistemas de información, más cercanos a los usuarios. 1999 artículo científico 1575-2437 https://www.redalyc.org/articulo.oa?id=63500206 es http://www.redalyc.org/revista.oa?id=635 Anales de Documentación application/pdf Universidad de Murcia Anales de Documentación (España) Num.2

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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