Toward More Critical Reviewing and Analysis of CD-ROM User Software Interfaces.

Fuente: ERIC Institute of Education Sciences

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Bibliographic Details
Main Author:	Zink, Steven D.
Format:	Recurso educativo Open Access
Language:	en
Published:	1991
Subjects:	Academic Libraries Bibliographic Databases Computer Software Evaluation Computer Software Reviews Government Publications Higher Education Man Machine Systems Menu Driven Software Online Searching Online Vendors Optical Data Disks User Needs (Information) Users (Information)
Online Access:	Acceder al recurso
Tags:	Add Tag No Tags, Be the first to tag this record!

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Published: (1992)

End-Users, Front Ends and Librarians.
by: Bourne, Donna E.
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CD-ROMS Step by Step.
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Clear Signals? Telecommunications, Convergence, and the Quality of Information. A Summary of Proceedings of the FLICC Forum on Federal Information Policies (14th, Washington, DC, 1997).
Published: (1997)

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by: Graf, Nancy
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Integrating CD-ROM with Printed and Online Services: A Silver Platter End-User Perspective.
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Using HYTELNET to Access Internet Resources.
by: Scott, Peter
Published: (1992)

Multi-Database Searching in Forensic Psychology.
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User Interfaces for CD-ROM PACs.
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Promise Fulfilled? An EBSCO Discovery Service Usability Study
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Guide to CD-ROM.
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Administrative Issues in Planning a Library End User Searching Program. ERIC Digest.
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Cataloging in Focus.
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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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