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Bibliographic Details
Main Author:	Ileana Castillo-Arias
Format:	Artículo científico
Language:	es
Published:	Universidad de Costa Rica 2017
Subjects:	Física, Astronomía y Matemáticas eficiencia educación superior Análisis envolvente de datos
Online Access:	https://www.redalyc.org/articulo.oa?id=45352200007
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PROGRAMACIÓN MATEMÁTICA PARA MEDIR EFICIENCIA EN EL SECTOR EDUCATIVO Ileana Castillo-Arias Gabriela Marín-Raventós Física, Astronomía y Matemáticas eficiencia educación superior Análisis envolvente de datos En este artículo se presenta un análisis de la eficiencia técnica y de escala de las unidades académicas de la Universidad de Costa Rica. La metodología utilizada es el Análisis Envolvente de Datos (DEA, por sus siglas en inglés), pues permite medir eficiencia relativa y proporciona in- formación sobre cómo debe mejorar cada unidad académica que resulta ineficiente. Se reportan los resultados para tres agrupaciones: una basada en el proceso formativo, otra en el tamaño (de acuerdo a tres entradas) y la tercera basada en área de conocimiento. Se usan tres indicadores de en- trada y tres de salida. Se realiza un análisis de sensibilidad por medio de la formulación de cuatro modelos. Se hace énfasis en el modelo matemático utilizado, correspondiente al modelo orientado a salidas y con rendimientos de escala variables, el cual se resuelve con los datos normalizados. 2017 artículo científico 1409-2433 https://www.redalyc.org/articulo.oa?id=45352200007 es http://www.redalyc.org/revista.oa?id=453 Revista de Matemática: Teoría y Aplicaciones application/pdf Universidad de Costa Rica Revista de Matemática: Teoría y Aplicaciones (Costa Rica) Num.2 Vol.24

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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