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Bibliographic Details
Main Author:	Sandra Cristina Riascos Erazo
Format:	Artículo científico
Language:	es
Published:	Universidad Nacional de Colombia 2008
Subjects:	Ingeniería empresa innovación Tecnología informática sistemas de información
Online Access:	https://www.redalyc.org/articulo.oa?id=64328220
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Modelo para la evaluación de la efectividad de la tecnología informática en el entorno empresarial Sandra Cristina Riascos Erazo Ingeniería empresa innovación Tecnología informática sistemas de información El impacto tecnológico especialmente en la inclusión de la tecnología informática (en adelante TI) en los procesos administrativos ha dinamizado las estrategias empresariales logrando en muchas ocasiones el éxito organizacional, tal ha sido su importancia que se hace necesario estimar un modelo que permita valorar su efectividad en este entorno. El presente artículo muestra el producto de un estudio sobre una serie de modelos que permiten evaluar la TI, sus ventajas y desventajas; además se propone un modelo que involucra diferentes aspectos que permitan evaluar la efectividad de las TI de forma integral y considerando las características particulares de las actividades administrativas. Este estudio analítico proporciona como resultado, en primer lugar, lineamientos necesarios para identificar el grado de efectividad de la TI en el entorno empresarial, y en segundo lugar, estrategias fundamentales dentro del proceso de innovación tecnológica que coexiste en el momento empresarial; además este estudio se fundamenta en normativas como: ISO 9126, ISO 9001, ISO 15939, ISO 25000 y estándares como el Cobit, CMM, entre otros. 2008 artículo científico 0120-5609 https://www.redalyc.org/articulo.oa?id=64328220 es http://www.redalyc.org/revista.oa?id=643 Ingeniería e Investigación application/pdf Universidad Nacional de Colombia Ingeniería e Investigación (Colombia) Num.2 Vol.28

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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