Desktop Video: Multi-Media on the NeXT Computer.

Fuente: ERIC Institute of Education Sciences

Saved in:

Bibliographic Details
Main Authors:	Stammen, Ronald M., Richardson, Jolene
Format:	Recurso educativo Open Access
Language:	en
Published:	1992
Subjects:	Academically Gifted Career Guidance Computer Networks Course Descriptions Desktop Publishing Distance Education Electronic Mail Electronic Publishing Elementary Secondary Education Information Networks Information Technology Interactive Video Microcomputers Pilot Projects Telecommunications Writing (Composition)
Online Access:	Acceder al recurso
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author	Stammen, Ronald M. Richardson, Jolene
author_facet	Stammen, Ronald M. Richardson, Jolene Stammen, Ronald M. Richardson, Jolene
collection	Education Resources Information Center
contents	Desktop Video: Multi-Media on the NeXT Computer. Stammen, Ronald M. Richardson, Jolene Academically Gifted Career Guidance Computer Networks Course Descriptions Desktop Publishing Distance Education Electronic Mail Electronic Publishing Elementary Secondary Education Information Networks Information Technology Interactive Video Microcomputers Pilot Projects Telecommunications Writing (Composition) A new course, Independent Study Research and Writing via Telecommunications, is being developed by the Division of Independent Study (DIS) of the North Dakota Department of Public Instruction to teach telepublishing skills utilizing the NeXT telecommunicating (interpersonal computing) techniques, i.e., NeXT Mail. This multimedia electronic-mail application is capable of sending and receiving text, data files, sound, video, animations, images, facsimile, and graphics. The goals of this pilot project include: (1) providing students and teachers in participating schools with online support and assistance in developing educational resources; (2) using multimedia interpersonal computing to extend library services between school districts; (3) corresponding about classroom use of mathematics; (4) enhancing advanced writing and composition projects; (5) using the medium as a pilot project with the Talented and Gifted (TAG) resource center for distance education; and (6) developing an online career guidance service which utilizes state and national networks. This report discusses the technologies involved, the goals of the project and accomplishments to date, the various projects supporting and cooperating with TAG, and SENDIT, a computer-mediated communication network for North Dakota K-12 educators. Descriptions of cooperative activities between higher education and K-12 schools, projected uses of online systems through SENDIT, and the status of the project in its second year of development conclude the report. (Contains 13 references.) (ALF)
format	Recurso educativo Open Access
id	eric_ED348964
institution	ERIC Institute of Education Sciences
language	en
publishDate	1992
record_format	eric
spellingShingle	Desktop Video: Multi-Media on the NeXT Computer. Stammen, Ronald M. Richardson, Jolene Academically Gifted Career Guidance Computer Networks Course Descriptions Desktop Publishing Distance Education Electronic Mail Electronic Publishing Elementary Secondary Education Information Networks Information Technology Interactive Video Microcomputers Pilot Projects Telecommunications Writing (Composition) Desktop Video: Multi-Media on the NeXT Computer. Stammen, Ronald M. Richardson, Jolene Academically Gifted Career Guidance Computer Networks Course Descriptions Desktop Publishing Distance Education Electronic Mail Electronic Publishing Elementary Secondary Education Information Networks Information Technology Interactive Video Microcomputers Pilot Projects Telecommunications Writing (Composition) A new course, Independent Study Research and Writing via Telecommunications, is being developed by the Division of Independent Study (DIS) of the North Dakota Department of Public Instruction to teach telepublishing skills utilizing the NeXT telecommunicating (interpersonal computing) techniques, i.e., NeXT Mail. This multimedia electronic-mail application is capable of sending and receiving text, data files, sound, video, animations, images, facsimile, and graphics. The goals of this pilot project include: (1) providing students and teachers in participating schools with online support and assistance in developing educational resources; (2) using multimedia interpersonal computing to extend library services between school districts; (3) corresponding about classroom use of mathematics; (4) enhancing advanced writing and composition projects; (5) using the medium as a pilot project with the Talented and Gifted (TAG) resource center for distance education; and (6) developing an online career guidance service which utilizes state and national networks. This report discusses the technologies involved, the goals of the project and accomplishments to date, the various projects supporting and cooperating with TAG, and SENDIT, a computer-mediated communication network for North Dakota K-12 educators. Descriptions of cooperative activities between higher education and K-12 schools, projected uses of online systems through SENDIT, and the status of the project in its second year of development conclude the report. (Contains 13 references.) (ALF)
title	Desktop Video: Multi-Media on the NeXT Computer.
topic	Academically Gifted Career Guidance Computer Networks Course Descriptions Desktop Publishing Distance Education Electronic Mail Electronic Publishing Elementary Secondary Education Information Networks Information Technology Interactive Video Microcomputers Pilot Projects Telecommunications Writing (Composition)
url	https://eric.ed.gov/?id=ED348964

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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