Access; A Study of Information Storage and Retrieval With Emphasis on Library Information Systems. Final Report.

Fuente: ERIC Institute of Education Sciences

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Bibliographic Details
Main Authors:	Resnikoff, H. L., Dolby, J. L.
Format:	Recurso educativo Open Access
Language:	en
Published:	1972
Subjects:	Costs Information Retrieval Information Storage Information Systems Library Automation Library Collections Models Use Studies
Online Access:	Acceder al recurso
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author	Resnikoff, H. L. Dolby, J. L.
author_facet	Resnikoff, H. L. Dolby, J. L. Resnikoff, H. L. Dolby, J. L.
collection	Education Resources Information Center
contents	Access; A Study of Information Storage and Retrieval With Emphasis on Library Information Systems. Final Report. Resnikoff, H. L. Dolby, J. L. Costs Information Retrieval Information Storage Information Systems Library Automation Library Collections Models Use Studies It is the purpose of this study to provide fresh insight into the nature of library problems by systematically studying the question of size in various information contexts. In the introduction, the role that size plays from the user's point of view is illustrated. In the following sections, a study of the card catalogue, the classification system and various other access mechanisms are presented. Their size characteristics are determined and the impact of these considerations on the creation and use of access mechanisms is shown. The several chapters that follow are devoted to the more extensive statistical and mathematical justifications necessary to provide a solid base for future study improvement, and design of information access systems. (Author/NH)
format	Recurso educativo Open Access
id	eric_ED060921
institution	ERIC Institute of Education Sciences
language	en
publishDate	1972
record_format	eric
spellingShingle	Access; A Study of Information Storage and Retrieval With Emphasis on Library Information Systems. Final Report. Resnikoff, H. L. Dolby, J. L. Costs Information Retrieval Information Storage Information Systems Library Automation Library Collections Models Use Studies Access; A Study of Information Storage and Retrieval With Emphasis on Library Information Systems. Final Report. Resnikoff, H. L. Dolby, J. L. Costs Information Retrieval Information Storage Information Systems Library Automation Library Collections Models Use Studies It is the purpose of this study to provide fresh insight into the nature of library problems by systematically studying the question of size in various information contexts. In the introduction, the role that size plays from the user's point of view is illustrated. In the following sections, a study of the card catalogue, the classification system and various other access mechanisms are presented. Their size characteristics are determined and the impact of these considerations on the creation and use of access mechanisms is shown. The several chapters that follow are devoted to the more extensive statistical and mathematical justifications necessary to provide a solid base for future study improvement, and design of information access systems. (Author/NH)
title	Access; A Study of Information Storage and Retrieval With Emphasis on Library Information Systems. Final Report.
topic	Costs Information Retrieval Information Storage Information Systems Library Automation Library Collections Models Use Studies
url	https://eric.ed.gov/?id=ED060921

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// 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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