E-Metrics and Library Assessment in Action

Fuente: ERIC Institute of Education Sciences

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Bibliographic Details
Main Author:	Kinman, Virginia
Format:	Recurso educativo Open Access
Language:	en
Published:	2009
Subjects:	Metric System Academic Libraries Library Research Online Vendors Library Services Electronic Journals Electronic Libraries Standard Setting Information Policy Measurement Techniques Statistical Studies Statistical Analysis Use Studies Users (Information)
Online Access:	Acceder al recurso
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_version_	1867180991176507393
author	Kinman, Virginia
author_facet	Kinman, Virginia Kinman, Virginia
collection	Education Resources Information Center
contents	E-Metrics and Library Assessment in Action Kinman, Virginia Metric System Academic Libraries Library Research Online Vendors Library Services Electronic Journals Electronic Libraries Standard Setting Information Policy Measurement Techniques Statistical Studies Statistical Analysis Use Studies Users (Information) Digital resources play an increasingly important role in academic libraries, which must demonstrate their value to the institution and their impact on student learning outcomes in new and more compelling ways. This study examines 5 years of vendor-supplied e-resource usage data in conjunction with other library and institution measures. Results are compared to major findings from other researchers, with examples of how e-metrics can be incorporated into a broader assessment of the library's success in meeting the needs of its users. (Contains 6 figures and 1 table.)
format	Recurso educativo Open Access
id	eric_EJ866957
institution	ERIC Institute of Education Sciences
language	en
publishDate	2009
record_format	eric
spellingShingle	E-Metrics and Library Assessment in Action Kinman, Virginia Metric System Academic Libraries Library Research Online Vendors Library Services Electronic Journals Electronic Libraries Standard Setting Information Policy Measurement Techniques Statistical Studies Statistical Analysis Use Studies Users (Information) E-Metrics and Library Assessment in Action Kinman, Virginia Metric System Academic Libraries Library Research Online Vendors Library Services Electronic Journals Electronic Libraries Standard Setting Information Policy Measurement Techniques Statistical Studies Statistical Analysis Use Studies Users (Information) Digital resources play an increasingly important role in academic libraries, which must demonstrate their value to the institution and their impact on student learning outcomes in new and more compelling ways. This study examines 5 years of vendor-supplied e-resource usage data in conjunction with other library and institution measures. Results are compared to major findings from other researchers, with examples of how e-metrics can be incorporated into a broader assessment of the library's success in meeting the needs of its users. (Contains 6 figures and 1 table.)
title	E-Metrics and Library Assessment in Action
topic	Metric System Academic Libraries Library Research Online Vendors Library Services Electronic Journals Electronic Libraries Standard Setting Information Policy Measurement Techniques Statistical Studies Statistical Analysis Use Studies Users (Information)
url	https://eric.ed.gov/?id=EJ866957

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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