Technology Innovations and the Development of Distance Education: Korean Experience.

Fuente: ERIC Institute of Education Sciences

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Bibliographic Details
Main Author:	Jung, Insung
Format:	Recurso educativo Open Access
Language:	en
Published:	2000
Subjects:	Databases Distance Education Educational Innovation Electronic Libraries Higher Education Instructional Design Instructional Effectiveness Multimedia Materials Open Universities Web Based Instruction
Online Access:	Acceder al recurso
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author	Jung, Insung
author_facet	Jung, Insung Jung, Insung
collection	Education Resources Information Center
contents	Technology Innovations and the Development of Distance Education: Korean Experience. Jung, Insung Databases Distance Education Educational Innovation Electronic Libraries Higher Education Instructional Design Instructional Effectiveness Multimedia Materials Open Universities Web Based Instruction Examines the Korean National Open University's (KNOU) four recent technology initiatives for distance education, including an online database and multimedia digital library, an integrated Web-based student support system, a videoconferencing network, and Web-based course. Suggests that it is instructional design, not technology, which is at the center of effective distance education. (Author/LRW)
format	Recurso educativo Open Access
id	eric_EJ623545
institution	ERIC Institute of Education Sciences
language	en
publishDate	2000
record_format	eric
spellingShingle	Technology Innovations and the Development of Distance Education: Korean Experience. Jung, Insung Databases Distance Education Educational Innovation Electronic Libraries Higher Education Instructional Design Instructional Effectiveness Multimedia Materials Open Universities Web Based Instruction Technology Innovations and the Development of Distance Education: Korean Experience. Jung, Insung Databases Distance Education Educational Innovation Electronic Libraries Higher Education Instructional Design Instructional Effectiveness Multimedia Materials Open Universities Web Based Instruction Examines the Korean National Open University's (KNOU) four recent technology initiatives for distance education, including an online database and multimedia digital library, an integrated Web-based student support system, a videoconferencing network, and Web-based course. Suggests that it is instructional design, not technology, which is at the center of effective distance education. (Author/LRW)
title	Technology Innovations and the Development of Distance Education: Korean Experience.
topic	Databases Distance Education Educational Innovation Electronic Libraries Higher Education Instructional Design Instructional Effectiveness Multimedia Materials Open Universities Web Based Instruction
url	https://eric.ed.gov/?id=EJ623545

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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