Preservation and Conservation of Library Documents: A Unesco/IFLA/ICA Enquiry into the Current State of the World's Patrimony.

Fuente: ERIC Institute of Education Sciences

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Bibliographic Details
Main Author:	Clements, D. W. G.
Format:	Recurso educativo Open Access
Language:	en
Published:	1987
Subjects:	Archives Buildings Environmental Influences Global Approach International Organizations Library Collections Library Materials National Organizations Policy Preservation Program Development Questionnaires
Online Access:	Acceder al recurso
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The Preservation and Administration of Private Archives: A RAMP Study.
by: Seton, Rosemary E.
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Feasibility of an IFLA Round Table on the Management of Library Associations.
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Conservation/Preservation: An International Approach.
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Conservation, Preservation and Restoration in Nigerian Libraries.
by: Ojo-Igbinoba, M. E.
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Bibliographic Services throughout the World. Supplement: 1981-1982 = Les services bibliographiques dans le monde. Supplement, 1981-1982.
by: Beaudiquez, Marcelle
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Librarianship in the Arab World.
by: Alqudsi-Ghabra, T.
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Archival Preservation Practice in a Nationwide Context.
by: Conway, Paul
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IFLA General Conference, 1986. Collections and Services Division. Section: Acquisitions and Exchange. Papers.
Published: (1986)

Aid to Libraries: Policies and Trends.
by: Clow, David V.
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Coordinating Collection Development and Use: Psychology at the University of Florida Libraries.
by: Shontz, David
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Published: (1986)

IFLA General Conference, 1984. Special Libraries Division. Section on Art Libraries; Section on Music Libraries. Papers.
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The Thrust of Unesco's General Information Programme.
by: Roberts, Kenneth H.
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IFLA General Conference, 1990. IFLA Presession Seminar on Public Library Policy.
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IFLA General Conference, 1986. General Research Libraries Division. Section: National Libraries. Papers.
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Current Trends in Preservation Research and Development.
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Bibliographic Control in Papue New Guinea.
by: McConnell, Fraiser
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Retrospective Bibliographies: State-of-the-Art and Comparative Report.
by: Beaudiquez, Marcelle
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IFLA General Conference, 1986. Collections and Services Division. Section: Interlibrary and Document Delivery. Papers.
Published: (1986)

The Nigerian Institute of International Affairs Library: Its Resources and Services.
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IFLA, ALA, and Issues in International Librarianship.
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IFLA General Conference, 1990. Official Opening and Plenary Session; Open Forum on IFLA's Core Programmes; Contributed Papers Session. Booklet 0.
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Matching Preservation Decisions with Collection Development Policy.
by: Khislovskaya, Galina
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IFLA General Conference, 1985. Division on Collections and Services. Section on Rare and Precious Books and Documents. Papers.
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Comprehensive Academic Library Preservation and Conservation Activities Survey for Fiscal Year 1988-1989. (A Sabbatical Leave Project).
by: Lamb, Robert Scott, II
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The IFLA ALP (Advancement of Librarianship in Developing Countries) Programme: A Bibliography. 1966-1990. IFLA Professional Reports, No. 26.
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Procedures for Development and Access to Published Standards.
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Preserving Library Materials in the South Pacific.
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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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