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1. Verfasser:	Yuliana Solarte González
Format:	Artículo científico
Sprache:	es
Veröffentlicht:	Universidad del Valle 2009
Schlagworte:	Ingeniería cuenca modelación Planeación de recursos hídricos
Online-Zugang:	https://www.redalyc.org/articulo.oa?id=231116390002
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Inhaltsangabe:

CARACTERIZACIÓN DEL RECURSO HÍDRICO DE LA SUBCUENCA AGUACLARA - RÍO BOLO PARA FINES DE ABASTO DE AGUA Yuliana Solarte González Maricela Trejos Arroyave Hernán Materón Muñoz Ingeniería cuenca modelación Planeación de recursos hídricos Se establecieron criterios técnicos para optimizar el sistema de abastecimiento de agua del corregimiento de La Buitrera en el municipio de Palmira (Colombia). El análisis hidráulico se basó en modelar y simular las redes de conducción y distribución del acueducto empleando el programa de simulación EPANET. Para alcanzar los objetivos propuestos se incluyó la participación directa de la comunidad. Con base en los resultados obtenidos fue necesario realizar acciones correctivas y desarrollar estrategias para optimizar el funcionamiento del acueducto. Actualmente, el sistema presenta algunas deficiencias operativas, debido principalmente a la mala utilización del recurso hídrico, especialmente los fines de semana y en las temporadas de vacaciones debido al incremento de la población flotante. La metodologíade trabajo se fundamentó en la caracterización biofísica y socioeconómica de la subcuenca del río Aguaclara. Para el desarrollo de la metodología se realizaron trabajos de campo y gabinete, éste último con el análisis de información preliminar existente y la evaluación hidráulica y operativa del acueducto. 2009 artículo científico 1692-9918 https://www.redalyc.org/articulo.oa?id=231116390002 es http://www.redalyc.org/revista.oa?id=2311 Ingeniería de Recursos Naturales y del Ambiente application/pdf Universidad del Valle Ingeniería de Recursos Naturales y del Ambiente (Colombia) Num.8

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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