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

Fuente: ERIC Institute of Education Sciences

Gespeichert in:

Bibliographische Detailangaben
1. Verfasser:	Zink, Steven D.
Format:	Recurso educativo Open Access
Sprache:	en
Veröffentlicht:	1991
Schlagworte:	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-Zugang:	Acceder al recurso
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

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author	Zink, Steven D.
author_facet	Zink, Steven D. Zink, Steven D.
collection	Education Resources Information Center
contents	Toward More Critical Reviewing and Analysis of CD-ROM User Software Interfaces. Zink, Steven D. 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) Criticizes reviews of library CD-ROM products as being uncritical of the user interface and advocates a more rigorous evaluation, not only to aid potential buyers, but as a way to influence manufacturers. Congressional Information Services' Masterfile 2 is evaluated in the context of Heckel's "Principles of Friendly Software Design." (24 references) (EAM)
format	Recurso educativo Open Access
id	eric_EJ421664
institution	ERIC Institute of Education Sciences
language	en
publishDate	1991
record_format	eric
spellingShingle	Toward More Critical Reviewing and Analysis of CD-ROM User Software Interfaces. Zink, Steven D. 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) Toward More Critical Reviewing and Analysis of CD-ROM User Software Interfaces. Zink, Steven D. 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) Criticizes reviews of library CD-ROM products as being uncritical of the user interface and advocates a more rigorous evaluation, not only to aid potential buyers, but as a way to influence manufacturers. Congressional Information Services' Masterfile 2 is evaluated in the context of Heckel's "Principles of Friendly Software Design." (24 references) (EAM)
title	Toward More Critical Reviewing and Analysis of CD-ROM User Software Interfaces.
topic	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)
url	https://eric.ed.gov/?id=EJ421664

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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