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Bibliographic Details
Main Authors:	Kirschner, Charlene D., And Others
Format:	Recurso educativo Open Access
Language:	en
Published:	1975
Subjects:	Annotated Bibliographies Audiotape Recordings Audiovisual Instruction Computer Assisted Instruction Doctoral Dissertations Educational Media Educational Technology Elementary Secondary Education Films Filmstrips Higher Education Learning Resources Centers Library Research Media Research Physical Education Programed Instruction Slides Television
Online Access:	https://eric.ed.gov/?id=ED108685
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author	Kirschner, Charlene D. And Others
author_facet	Kirschner, Charlene D. And Others Kirschner, Charlene D. And Others
collection	Education Resources Information Center
contents	Doctoral Research in Educational Media 1969-1972. Kirschner, Charlene D. And Others Annotated Bibliographies Audiotape Recordings Audiovisual Instruction Computer Assisted Instruction Doctoral Dissertations Educational Media Educational Technology Elementary Secondary Education Films Filmstrips Higher Education Learning Resources Centers Library Research Media Research Physical Education Programed Instruction Slides Television Dissertations were selected for inclusion in this annotated bibliography if they used some form of educational media as the subject or as the methodology of their research. Selections were made from "American Doctoral Dissertations" and from "Dissertation Abstracts." For those selected from the latter, volume and page citations to "Dissertations Abstracts" are included to aid in locating the full abstract. This bibliography is divided into eight sections entitled: audio, audiovisual, computers in instruction, library, programed instruction, projected materials: motion, projected materials: stills, and television. For those dissertations which fall in more than one category, cross-references are supplied. Within each of the eight chapters, citations are arranged alphabetically by author. (Author/SL)
format	Recurso educativo Open Access
id	eric_ED108685
institution	ERIC Institute of Education Sciences
language	en
publishDate	1975
record_format	eric
spellingShingle	Doctoral Research in Educational Media 1969-1972. Kirschner, Charlene D. And Others Annotated Bibliographies Audiotape Recordings Audiovisual Instruction Computer Assisted Instruction Doctoral Dissertations Educational Media Educational Technology Elementary Secondary Education Films Filmstrips Higher Education Learning Resources Centers Library Research Media Research Physical Education Programed Instruction Slides Television Doctoral Research in Educational Media 1969-1972. Kirschner, Charlene D. And Others Annotated Bibliographies Audiotape Recordings Audiovisual Instruction Computer Assisted Instruction Doctoral Dissertations Educational Media Educational Technology Elementary Secondary Education Films Filmstrips Higher Education Learning Resources Centers Library Research Media Research Physical Education Programed Instruction Slides Television Dissertations were selected for inclusion in this annotated bibliography if they used some form of educational media as the subject or as the methodology of their research. Selections were made from "American Doctoral Dissertations" and from "Dissertation Abstracts." For those selected from the latter, volume and page citations to "Dissertations Abstracts" are included to aid in locating the full abstract. This bibliography is divided into eight sections entitled: audio, audiovisual, computers in instruction, library, programed instruction, projected materials: motion, projected materials: stills, and television. For those dissertations which fall in more than one category, cross-references are supplied. Within each of the eight chapters, citations are arranged alphabetically by author. (Author/SL)
title	Doctoral Research in Educational Media 1969-1972.
topic	Annotated Bibliographies Audiotape Recordings Audiovisual Instruction Computer Assisted Instruction Doctoral Dissertations Educational Media Educational Technology Elementary Secondary Education Films Filmstrips Higher Education Learning Resources Centers Library Research Media Research Physical Education Programed Instruction Slides Television
url	https://eric.ed.gov/?id=ED108685

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 Variables empty

Registered Handlers

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