THE LIBRARY OF TOMORROW - TODAY, AND INFORMATION SERVICE OF EDUCATIONAL RESEARCH MATERIALS.

Fuente: ERIC Institute of Education Sciences

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Bibliographic Details
Main Authors:	KENT, ALLEN, AND OTHERS
Format:	Recurso educativo Open Access
Language:	en
Published:	1962
Subjects:	Educational Research Information Dissemination Information Processing Information Systems Library Services Resource Materials
Online Access:	Acceder al recurso
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author	KENT, ALLEN AND OTHERS
author_facet	KENT, ALLEN AND OTHERS KENT, ALLEN AND OTHERS
collection	Education Resources Information Center
contents	THE LIBRARY OF TOMORROW - TODAY, AND INFORMATION SERVICE OF EDUCATIONAL RESEARCH MATERIALS. KENT, ALLEN AND OTHERS Educational Research Information Dissemination Information Processing Information Systems Library Services Resource Materials THE PRELIMINARY PLANNING FOR THE DEVELOPMENT AND OPERATION OF AN INFORMATION RETRIEVAL SYSTEM IN THE FIELD OF EDUCATIONAL RESEARCH IS REPORTED. THIS PLAN WAS BUILT UPON DETAILED SUBJECT ANALYSIS AND RETRIEVAL OF DOCUMENTS BY A NATIONAL NETWORK TERMED THE EDUCATIONAL RESEARCH INFORMATION CENTER (ERIC). AN INVESTIGATION WAS ALSO MADE OF USE OF SELECTIVE DISSEMINATION OF INFORMATION. A DISCUSSION WAS INCLUDED OF A TEST ANALYSIS DONE ON APPROXIMATELY 4,000 DOCUMENTS. VARIOUS INPUT-OUTPUT CONFIGURATIONS WERE COMPARED. THE EXERCISING OF ADEQUATE BIBLIOGRAPHIC CONTROL OVER EDUCATIONAL RESEARCH INFORMATION IS ANTICIPATED BY MEANS OF THIS SYSTEM. (RS)
format	Recurso educativo Open Access
id	eric_ED003251
institution	ERIC Institute of Education Sciences
language	en
publishDate	1962
record_format	eric
spellingShingle	THE LIBRARY OF TOMORROW - TODAY, AND INFORMATION SERVICE OF EDUCATIONAL RESEARCH MATERIALS. KENT, ALLEN AND OTHERS Educational Research Information Dissemination Information Processing Information Systems Library Services Resource Materials THE LIBRARY OF TOMORROW - TODAY, AND INFORMATION SERVICE OF EDUCATIONAL RESEARCH MATERIALS. KENT, ALLEN AND OTHERS Educational Research Information Dissemination Information Processing Information Systems Library Services Resource Materials THE PRELIMINARY PLANNING FOR THE DEVELOPMENT AND OPERATION OF AN INFORMATION RETRIEVAL SYSTEM IN THE FIELD OF EDUCATIONAL RESEARCH IS REPORTED. THIS PLAN WAS BUILT UPON DETAILED SUBJECT ANALYSIS AND RETRIEVAL OF DOCUMENTS BY A NATIONAL NETWORK TERMED THE EDUCATIONAL RESEARCH INFORMATION CENTER (ERIC). AN INVESTIGATION WAS ALSO MADE OF USE OF SELECTIVE DISSEMINATION OF INFORMATION. A DISCUSSION WAS INCLUDED OF A TEST ANALYSIS DONE ON APPROXIMATELY 4,000 DOCUMENTS. VARIOUS INPUT-OUTPUT CONFIGURATIONS WERE COMPARED. THE EXERCISING OF ADEQUATE BIBLIOGRAPHIC CONTROL OVER EDUCATIONAL RESEARCH INFORMATION IS ANTICIPATED BY MEANS OF THIS SYSTEM. (RS)
title	THE LIBRARY OF TOMORROW - TODAY, AND INFORMATION SERVICE OF EDUCATIONAL RESEARCH MATERIALS.
topic	Educational Research Information Dissemination Information Processing Information Systems Library Services Resource Materials
url	https://eric.ed.gov/?id=ED003251

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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