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Bibliographic Details
Main Authors:	Arents, Hans C., Bogaerts, Walter F. L.
Format:	Recurso educativo Open Access
Language:	en
Published:	1993
Subjects:	Computer System Design Hypermedia Indexing Information Retrieval Models Semantics Subject Index Terms Thesauri Visualization
Online Access:	https://eric.ed.gov/?id=EJ465702
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PRECIS: The Preserved Context Index System
by: Austin, Derek, et al.
Published: (1977)

Indexing in Art and Architecture: An Investigation and Analysis. Report to the Council on Library Resources.
by: Crouch, Dora, et al.
Published: (1981)

Terminological Problems: Occurrence, Causes, Consequences and Solutions in Guidance, Counselling and Associated Fields.
by: Thomas, Alan R.
Published: (1989)

Knowledge-Based Indexing of the Medical Literature: The Indexing Aid Project.
by: Humphrey, Suzanne, et al.
Published: (1987)

Indexing Consistency: The Input/Output Function of Thesauri.
by: Reich, Phyllis, et al.
Published: (1991)

List of Australian Subject Headings: Too Little? Too Late?
by: McKinlay, John
Published: (1979)

Documentation-in-Source for Library and Information Science
by: Wellisch, Hans
Published: (1971)

Thesauri for Vocabulary Control
by: Freedman, Barbara
Published: (1972)

Microcomputers in Index Language Design and Development.
by: Batty, David
Published: (1984)

File Maintenance of MeSH Headings in MEDLINE.
by: Humphrey, Susanne M.
Published: (1984)

LC Subject Headings Disguised as a Thesaurus.
by: Dykstra, Mary
Published: (1988)

Modern Subject Access in the Online Age.
by: Cochrane, Pauline A.
Published: (1984)

Year's Work in Subject Analysis: 1981.
by: Younger, Jennifer A.
Published: (1982)

Modern Subject Access in the Online Age.
by: Cochrane, Pauline A.
Published: (1984)

Modern Subject Access in the Online Age.
by: Cochrane, Pauline A., et al.
Published: (1984)

Dynamic Thesaural Systems: A Bibliometric Study of Terminological and Conceptual Change in Sociology and Economics with Application to the Design of Dynamic Thesaural Systems.
by: Rees-Potter, Lorna K.
Published: (1989)

A New Information Access Tool for Children's Media.
by: Hines, Theodore C., et al.
Published: (1983)

An Analysis of the Universal Decimal Classification as a Term System for Nuclear Science and Technology
by: Stueart, Robert D.
Published: (1971)

Thesauri and Classifications in Non-Scientific Areas
by: Walls, Nina
Published: (1972)

The Use of Automatic Indexing for Authority Control.
by: Dillon, Martin, et al.
Published: (1981)

Thesaurus Construction: An Introduction
by: Rogers, Virginia G.
Published: (1972)

Vocabulary Control in Indexing the Literature of Librarianship and Information Science.
by: Hines, Theodore C.
Published: (1968)

Year's Work in Subject Analysis: 1980.
by: Wellisch, Hans H.
Published: (1981)

Scope Notes for LISA Subject Headings.
by: Browne, Glenda
Published: (1992)

Modern Subject Access in the Online Age.
by: Cochrane, Pauline A.
Published: (1984)

Linguistic Approaches to the Construction and Use of Thesauri: A Review
by: Neufeld, Margaret L.
Published: (1972)

Subject Retrieval in the Seventies; New Directions. Proceedings of an International Symposium Held at the Center of Adult Education, University of Maryland, College Park, May 14 to 15, 1971.
by: Wellisch, Hans, Ed., et al.
Published: (1972)

A Survey of the Literature on Subject Analysis for 1984-85.
by: Dale, Doris Cruger, et al.
Published: (1986)

Designing the OPAC User Interface to Improve Access and Retrieval.
by: Basista, Thomas, et al.
Published: (1991)

WANTED: Fully Automated Indexing.
by: Purcell, Royal
Published: (1991)

Multiple Thesauri in Online Library Bibliographic Systems.
by: Mandel, Carol A.
Published: (1987)

Visualizing Subject Access for 21st Century Information Resources. Papers Presented at the Clinic on Library Applications of Data Processing (34th, Urbana, Illinois, March 2-4, 1997).
by: Cochrane, Pauline Atherton, Ed., et al.
Published: (1998)

Modern Algebra and Information Science.
by: Diodato, Virgil
Published: (1983)

Mass Communication Thesauri and Controlled Vocabularies: An Evaluation.
by: Brunning, Dennis R.
Published: (1987)

The Descriptive Challenges of Fiber Art.
by: Lunin, Lois F.
Published: (1990)

Subject Access in Online Catalogs: A Design Model.
by: Bates, Marcia J.
Published: (1986)

Automatic Classification: Directions of Recent Research
by: Moberg, Zandra
Published: (1974)

Subject Access Literature, 1988.
by: Wolner, Theresa J.
Published: (1989)

The Hidden Classification in Library of Congress Subject Headings for Judaica.
by: Weinberg, Bella Hass
Published: (1993)

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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