Off-Site Storage and Special Collections: A Study in Use and Impact in ARL Libraries in the United States

Fuente: ERIC Institute of Education Sciences

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Bibliographic Details
Main Authors:	Priddle, Charlotte, McCann, Laura
Format:	Recurso educativo Open Access
Language:	en
Published:	2015
Subjects:	Cultural Background Archives Library Materials Library Development Information Storage Online Surveys Incidence Public Service Preservation Cataloging Information Management Information Processing Selection Library Administration Space Utilization Library Research Special Libraries Research Libraries
Online Access:	Acceder al recurso
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author	Priddle, Charlotte McCann, Laura
author_facet	Priddle, Charlotte McCann, Laura Priddle, Charlotte McCann, Laura
collection	Education Resources Information Center
contents	Off-Site Storage and Special Collections: A Study in Use and Impact in ARL Libraries in the United States Priddle, Charlotte McCann, Laura Cultural Background Archives Library Materials Library Development Information Storage Online Surveys Incidence Public Service Preservation Cataloging Information Management Information Processing Selection Library Administration Space Utilization Library Research Special Libraries Research Libraries Special collections libraries collect and preserve materials of intellectual and cultural heritage, providing access to unique research resources. As their holdings continue to expand, special collections in research libraries confront increased space pressures. Off-site storage facilities, used frequently by research libraries for general circulating collections, offer a solution to these pressures. Using data from a survey of special collections directors from ARL member libraries, this article examines both the current use of off-site storage facilities and its impact on core special collections activities. This study provides a foundation for what has been an underexplored area and identifies areas for further research.
format	Recurso educativo Open Access
id	eric_EJ1069871
institution	ERIC Institute of Education Sciences
language	en
publishDate	2015
record_format	eric
spellingShingle	Off-Site Storage and Special Collections: A Study in Use and Impact in ARL Libraries in the United States Priddle, Charlotte McCann, Laura Cultural Background Archives Library Materials Library Development Information Storage Online Surveys Incidence Public Service Preservation Cataloging Information Management Information Processing Selection Library Administration Space Utilization Library Research Special Libraries Research Libraries Off-Site Storage and Special Collections: A Study in Use and Impact in ARL Libraries in the United States Priddle, Charlotte McCann, Laura Cultural Background Archives Library Materials Library Development Information Storage Online Surveys Incidence Public Service Preservation Cataloging Information Management Information Processing Selection Library Administration Space Utilization Library Research Special Libraries Research Libraries Special collections libraries collect and preserve materials of intellectual and cultural heritage, providing access to unique research resources. As their holdings continue to expand, special collections in research libraries confront increased space pressures. Off-site storage facilities, used frequently by research libraries for general circulating collections, offer a solution to these pressures. Using data from a survey of special collections directors from ARL member libraries, this article examines both the current use of off-site storage facilities and its impact on core special collections activities. This study provides a foundation for what has been an underexplored area and identifies areas for further research.
title	Off-Site Storage and Special Collections: A Study in Use and Impact in ARL Libraries in the United States
topic	Cultural Background Archives Library Materials Library Development Information Storage Online Surveys Incidence Public Service Preservation Cataloging Information Management Information Processing Selection Library Administration Space Utilization Library Research Special Libraries Research Libraries
url	https://eric.ed.gov/?id=EJ1069871

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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