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Main Author:	ALEJANDRO BECERRA
Format:	Artículo científico
Language:	es
Published:	Universidad Nacional de Colombia 2006
Subjects:	Ingeniería onda cinemática Riego por surcos eficiencias de riego simulación hidráulica programa computacional
Online Access:	https://www.redalyc.org/articulo.oa?id=49614910
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Programa computacional de simulación hidráulica del riego por surcos usando el modelo de onda cinemática (parte I: fundamento teórico) ALEJANDRO BECERRA HAROLD TAFUR HERMANN Ingeniería onda cinemática Riego por surcos eficiencias de riego simulación hidráulica programa computacional Pretendiendo simular en forma rápida y precisa los eventos de riego por surcos, nace la idea dedesarrollar un programa computacional, ya que cuando se utilizan los modelos de simulación hidráulica, elvolumen de cálculos involucrados puede resultar considerable; por tanto para hacer versátil y funcional elempleo de estos modelos, es conveniente trabajarlos en forma automatizada.En este artículo se expone el fundamento teórico del modelo de simulación hidráulica onda cinemática, el cualfue usado para el desarrollo de un programa computacional que simula los diferentes eventos en el riego porsurcos. Para el efecto se construyó un algoritmo bien estructurado para cada fase del riego (avance, llenado yrecesión) y para cada frente de aplicación (diseño y evaluación).El modelo de onda cinemática utiliza las constantes de la ecuación de infiltración Kostiakov Lewis y tiene laposibilidad de simular el movimiento del agua en el perfil longitudinal del suelo y cálculo del área dehumedecimiento en la sección transversal del surco. 2006 artículo científico 0012-7353 https://www.redalyc.org/articulo.oa?id=49614910 es http://www.redalyc.org/revista.oa?id=496 Dyna application/pdf Universidad Nacional de Colombia Dyna (Colombia) Num.149 Vol.73

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// 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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