Matching Preservation Decisions with Collection Development Policy.

Fuente: ERIC Institute of Education Sciences

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Bibliographic Details
Main Author:	Khislovskaya, Galina
Format:	Recurso educativo Open Access
Language:	en
Published:	1999
Subjects:	Foreign Countries Library Administration Library Collection Development Library Policy Mission Statements National Libraries Preservation Regional Libraries
Online Access:	Acceder al recurso
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author	Khislovskaya, Galina
author_facet	Khislovskaya, Galina Khislovskaya, Galina
collection	Education Resources Information Center
contents	Matching Preservation Decisions with Collection Development Policy. Khislovskaya, Galina Foreign Countries Library Administration Library Collection Development Library Policy Mission Statements National Libraries Preservation Regional Libraries Based on communication with librarians from Russia, Mongolia, the Baltic States, Bulgaria, Slovenia, the Czech Republic, and Romania, this paper discusses library collection development and preservation policies. Highlights include: mission statements of national and regional libraries; availability of a formal structure responsible for collection management that binds the relationship between collection development and preservation in the institution; and adherence to large-scale preservation programs versus title-for-title preservation, including strategies for storage and handling (e.g., new facilities, boxing, binding, microfilming, and deacidification). (MES)
format	Recurso educativo Open Access
id	eric_ED441457
institution	ERIC Institute of Education Sciences
language	en
publishDate	1999
record_format	eric
spellingShingle	Matching Preservation Decisions with Collection Development Policy. Khislovskaya, Galina Foreign Countries Library Administration Library Collection Development Library Policy Mission Statements National Libraries Preservation Regional Libraries Matching Preservation Decisions with Collection Development Policy. Khislovskaya, Galina Foreign Countries Library Administration Library Collection Development Library Policy Mission Statements National Libraries Preservation Regional Libraries Based on communication with librarians from Russia, Mongolia, the Baltic States, Bulgaria, Slovenia, the Czech Republic, and Romania, this paper discusses library collection development and preservation policies. Highlights include: mission statements of national and regional libraries; availability of a formal structure responsible for collection management that binds the relationship between collection development and preservation in the institution; and adherence to large-scale preservation programs versus title-for-title preservation, including strategies for storage and handling (e.g., new facilities, boxing, binding, microfilming, and deacidification). (MES)
title	Matching Preservation Decisions with Collection Development Policy.
topic	Foreign Countries Library Administration Library Collection Development Library Policy Mission Statements National Libraries Preservation Regional Libraries
url	https://eric.ed.gov/?id=ED441457

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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