Information Retrieval and Dissemination Center. Final Project Report 1968-71.

Fuente: ERIC Institute of Education Sciences

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Bibliographic Details
Format:	Recurso educativo Open Access
Language:	en
Published:	1971
Subjects:	Information Centers Information Dissemination Information Retrieval Information Services Library Cooperation Public Libraries School Libraries
Online Access:	Acceder al recurso
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collection	Education Resources Information Center
contents	Information Retrieval and Dissemination Center. Final Project Report 1968-71. Information Centers Information Dissemination Information Retrieval Information Services Library Cooperation Public Libraries School Libraries The Information Retrieval and Dissemination Center of Levittown, New York, was created in September 1968 and funded through ESEA Title II and Title III as a joint pilot exemplary project of Union Free School District 5 and the Levittown Public Library. It was established to provide teachers with a quantity of material to be used in a classroom situation so that students would be exposed to a variety of sources and would not be limited to the viewpoint expressed by their textbooks. The project was also designed to make readily available to students copies of material from several sources for detailed study at home rather than having them spend hours copying information from a few sources in the library. This final report of the project contains a summary of the findings, description of the services, objectives of the center, an evaluation of the project, and conclusions and recommendations. (Author/SJ)
format	Recurso educativo Open Access
id	eric_ED078872
institution	ERIC Institute of Education Sciences
language	en
publishDate	1971
record_format	eric
spellingShingle	Information Retrieval and Dissemination Center. Final Project Report 1968-71. Information Centers Information Dissemination Information Retrieval Information Services Library Cooperation Public Libraries School Libraries Information Retrieval and Dissemination Center. Final Project Report 1968-71. Information Centers Information Dissemination Information Retrieval Information Services Library Cooperation Public Libraries School Libraries The Information Retrieval and Dissemination Center of Levittown, New York, was created in September 1968 and funded through ESEA Title II and Title III as a joint pilot exemplary project of Union Free School District 5 and the Levittown Public Library. It was established to provide teachers with a quantity of material to be used in a classroom situation so that students would be exposed to a variety of sources and would not be limited to the viewpoint expressed by their textbooks. The project was also designed to make readily available to students copies of material from several sources for detailed study at home rather than having them spend hours copying information from a few sources in the library. This final report of the project contains a summary of the findings, description of the services, objectives of the center, an evaluation of the project, and conclusions and recommendations. (Author/SJ)
title	Information Retrieval and Dissemination Center. Final Project Report 1968-71.
topic	Information Centers Information Dissemination Information Retrieval Information Services Library Cooperation Public Libraries School Libraries
url	https://eric.ed.gov/?id=ED078872

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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