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Main Author:	Francisca Staines Urias
Format:	Artículo científico
Language:	es
Published:	Universidad Autónoma del Estado de México 2007
Subjects:	Multidisciplinarias (Ciencias Sociales) cambio climático impacto antropogénico
Online Access:	https://www.redalyc.org/articulo.oa?id=10414313
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author	Francisca Staines Urias
author_facet	Francisca Staines Urias
contents	Cambio climático: interpretando el pasado para entender el presente Francisca Staines Urias Multidisciplinarias (Ciencias Sociales) cambio climático impacto antropogénico Entender los factores que controlan el clima y las causas del cambio climático reciente nos permite evaluar cuánto de este cambio es producto de la variación natural del sistema climático y hasta dónde es una consecuencia de la actividad humana. Este artículo explica brevemente las partes que conforman el sistema climático, la manera en que los científicos investigan los cambios ambientales ocurridos en el pasado y cómo se evalúa e interpreta la variabilidad climática actual. Además, hace referencia a la evidencia de un cambio climático acelerado durante el siglo XX y discute la posición de la comunidad científica ante tal evidencia. 2007 artículo científico 1405-0269 https://www.redalyc.org/articulo.oa?id=10414313 es http://www.redalyc.org/revista.oa?id=104 CIENCIA ergo-sum, Revista Científica Multidisciplinaria de Prospectiva application/pdf Universidad Autónoma del Estado de México CIENCIA ergo-sum, Revista Científica Multidisciplinaria de Prospectiva (México) Num.3 Vol.14
format	Artículo científico
id	redalyc_10414313
language	es
publishDate	2007
publisher	Universidad Autónoma del Estado de México
spellingShingle	Cambio climático: interpretando el pasado para entender el presente Francisca Staines Urias Multidisciplinarias (Ciencias Sociales) cambio climático impacto antropogénico Cambio climático: interpretando el pasado para entender el presente Francisca Staines Urias Multidisciplinarias (Ciencias Sociales) cambio climático impacto antropogénico Entender los factores que controlan el clima y las causas del cambio climático reciente nos permite evaluar cuánto de este cambio es producto de la variación natural del sistema climático y hasta dónde es una consecuencia de la actividad humana. Este artículo explica brevemente las partes que conforman el sistema climático, la manera en que los científicos investigan los cambios ambientales ocurridos en el pasado y cómo se evalúa e interpreta la variabilidad climática actual. Además, hace referencia a la evidencia de un cambio climático acelerado durante el siglo XX y discute la posición de la comunidad científica ante tal evidencia. 2007 artículo científico 1405-0269 https://www.redalyc.org/articulo.oa?id=10414313 es http://www.redalyc.org/revista.oa?id=104 CIENCIA ergo-sum, Revista Científica Multidisciplinaria de Prospectiva application/pdf Universidad Autónoma del Estado de México CIENCIA ergo-sum, Revista Científica Multidisciplinaria de Prospectiva (México) Num.3 Vol.14
title	Cambio climático: interpretando el pasado para entender el presente
topic	Multidisciplinarias (Ciencias Sociales) cambio climático impacto antropogénico
url	https://www.redalyc.org/articulo.oa?id=10414313

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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HTTP_USER_AGENT	"Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)"
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REQUEST_TIME	1784429509

Environment Variables empty

Registered Handlers

0. Whoops\Handler\PrettyPageHandler

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Environment & details: