Proceedings of the Conference on Image Storage and Transmission Systems for Libraries...December 1-2, 1969, National Bureau of Standards.

Fuente: ERIC Institute of Education Sciences

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Bibliographic Details
Main Author:	Henderson, Madeline M., Comp.
Format:	Recurso educativo Open Access
Language:	en
Published:	1970
Subjects:	Automation Conference Reports Facsimile Transmission Information Networks Information Retrieval Information Storage Information Systems Library Networks Library Science Microforms
Online Access:	Acceder al recurso
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_version_	1867181176168382464
author	Henderson, Madeline M., Comp.
author_facet	Henderson, Madeline M., Comp. Henderson, Madeline M., Comp.
collection	Education Resources Information Center
contents	Proceedings of the Conference on Image Storage and Transmission Systems for Libraries...December 1-2, 1969, National Bureau of Standards. Henderson, Madeline M., Comp. Automation Conference Reports Facsimile Transmission Information Networks Information Retrieval Information Storage Information Systems Library Networks Library Science Microforms The challenge of networking is now being extended to cooperative library and information center systems. There are new demands for improved techniques for image storage and transmission, specifically including automated storage and retrieval of microforms and ultra-microforms and new developments in graphic and facsimile transmission. In this conference, the state of the art and the state of the practice were reviewed as background for considering improvements in systems, experimental projects, and advanced techniques in media, communication facilities, and pictorial data processing. The many problems which remain, and possible future trends in development activities, were also discussed. (Author)
format	Recurso educativo Open Access
id	eric_ED045155
institution	ERIC Institute of Education Sciences
language	en
publishDate	1970
record_format	eric
spellingShingle	Proceedings of the Conference on Image Storage and Transmission Systems for Libraries...December 1-2, 1969, National Bureau of Standards. Henderson, Madeline M., Comp. Automation Conference Reports Facsimile Transmission Information Networks Information Retrieval Information Storage Information Systems Library Networks Library Science Microforms Proceedings of the Conference on Image Storage and Transmission Systems for Libraries...December 1-2, 1969, National Bureau of Standards. Henderson, Madeline M., Comp. Automation Conference Reports Facsimile Transmission Information Networks Information Retrieval Information Storage Information Systems Library Networks Library Science Microforms The challenge of networking is now being extended to cooperative library and information center systems. There are new demands for improved techniques for image storage and transmission, specifically including automated storage and retrieval of microforms and ultra-microforms and new developments in graphic and facsimile transmission. In this conference, the state of the art and the state of the practice were reviewed as background for considering improvements in systems, experimental projects, and advanced techniques in media, communication facilities, and pictorial data processing. The many problems which remain, and possible future trends in development activities, were also discussed. (Author)
title	Proceedings of the Conference on Image Storage and Transmission Systems for Libraries...December 1-2, 1969, National Bureau of Standards.
topic	Automation Conference Reports Facsimile Transmission Information Networks Information Retrieval Information Storage Information Systems Library Networks Library Science Microforms
url	https://eric.ed.gov/?id=ED045155

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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VUFIND_SESSION	"a50abd0ec6ab293344ad12082f7a9320"
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language	"en"

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SessionHelper	Laminas\Stdlib\ArrayObject {#1785}

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REDIRECT_HTTPS	"on"
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REDIRECT_STATUS	"200"
VUFIND_LOCAL_DIR	"/usr/local/vufind/local"
HTTPS	"on"
SSL_TLS_SNI	"info.umar.mx"
HTTP_ACCEPT	"/"
HTTP_USER_AGENT	"Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)"
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DOCUMENT_ROOT	"/usr/local/vufind/public"
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SCRIPT_FILENAME	"/usr/local/vufind/public/index.php"
REMOTE_PORT	"27678"
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GATEWAY_INTERFACE	"CGI/1.1"
SERVER_PROTOCOL	"HTTP/1.1"
REQUEST_METHOD	"GET"
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REQUEST_URI	"/Record/eric_ED045155/Details"
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REQUEST_TIME	1789008586

Environment Variables empty

Registered Handlers

0. Whoops\Handler\PrettyPageHandler

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