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Detalles Bibliográficos
Autor principal:	Àngels Massísimo i Sánchez de Boado
Formato:	Artículo científico
Lenguaje:	es
Publicado:	Universidad de Murcia 2004
Materias:	Ciencias de la Información indicadores de calidad Evaluación de colecciones bibliotecas universitarias
Acceso en línea:	https://www.redalyc.org/articulo.oa?id=63500711
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

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Evaluación de colecciones en las bibliotecas universitarias (II): métodos basados en el uso de la colección Àngels Massísimo i Sánchez de Boado Ciencias de la Información indicadores de calidad Evaluación de colecciones bibliotecas universitarias Como continuación del trabajo sobre métodos de evaluación basados en el estudio de la colección en sí misma, se presentan siete métodos alternativos de evaluación de la colección, basados esta vez en estudios sobre el uso de la colección. Se presenta en forma breve cada método y se describen sus ventajas e inconvenientes, así como la aplicabilidad de cada uno para diferentes tipos de colección. 2004 artículo científico 1575-2437 https://www.redalyc.org/articulo.oa?id=63500711 es http://www.redalyc.org/revista.oa?id=635 Anales de Documentación application/pdf Universidad de Murcia Anales de Documentación (España) Num.7

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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Environment & details:

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