Technical Information Centers: Specialized Services to Science and Technology. An Overview

Fuente: ERIC Institute of Education Sciences

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Bibliographic Details
Main Author:	Douville, Judith A.
Format:	Recurso educativo Open Access
Language:	en
Published:	1972
Subjects:	Administration Facilities Information Centers Information Services Libraries Library Cooperation Special Libraries
Online Access:	Acceder al recurso
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Total Information Centers.
by: Tenopir, Carol
Published: (1978)

Special Libraries, Problems and Cooperative Potentials; Prepared for the National Advisory Commission on Libraries. Final Report.
by: Havlik, Robert J., et al.
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The Information Center--Another Perspective.
by: Quinn, Karen Takle
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Information Activities in Selected Types of U.S. Scientific and Technical Libraries and Information Centers.
by: Cveljo, K.
Published: (1985)

A Mathematical Model of the Information Center Location Problem and Its Implications for Decision Makers.
by: Kraft, Donald H., et al.
Published: (1972)

Considerations in Planning Special Libraries and Information Centers
by: Lucas, Charlotte K.
Published: (1971)

Special Libraries
by: Lavendel, Giuliana
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The Information Analysis Center and the Library
by: Garvin, David
Published: (1971)

West Asian Special Libraries and Information Centers.
by: Harvey, John F.
Published: (1971)

The Library as a Profit Center.
by: Tweed, Stephen C.
Published: (1984)

Pay-As-You-Go Plan for Satellite Industrial Libraries Using Academic Facilities
by: Dodd, James B.
Published: (1974)

A Survey of Indiana Special Libraries and Information Centers.
by: Kenney, Brigitte L.
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Guidelines for Library Services to Prisoners. 3rd Edition. IFLA Professional Reports, No. 92
by: Lehmann, Vibeke, et al.
Published: (2005)

Contract Services in the Special Library
by: Landau, Herbert B.
Published: (1973)

Library and Information Services and Facilities in Prisons.
by: Reed, Jeffrey G.
Published: (1971)

Academic Information Services: A Library Management Perspective.
by: Allen, Bryce
Published: (1995)

Proceedings of Military Librarians' Workshop. The User and the Library (11th, Wright-Patterson Air Force Base, October 31-November 2, 1967).
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The Critical Success Factors Method: Its Application in a Special Library Environment.
by: Borbely, Jack
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The Administrator of a Special Library or Information Center and His Situation. Final Report
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Published: (1970)

Resource Center Guide.
by: Callahan, Susan, et al.
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Deafness Information Center
by: Wright, Kieth C.
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Preliminary Specifications (Hardware and Software) for a Center for Information Services. Final Report on Mechanized Information Services in the University Library, Phase I - Planning. Part 10.
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Joint-Use Libraries: More Bang for Your Bucks.
by: Kinsey, Sally, et al.
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Valuing Corporate Libraries: A Senior Management Survey.
by: Matarazzo, James M., et al.
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Information Services at the University of Calgary.
by: Norris, Douglas
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Sharing Technology for a Joint-Use Library
by: Woods, Richard F.
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Planned Parenthood Federation of America: Its Role as Provider of Information Services.
by: Roberts, Gloria A.
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A National Agency for Library Planning and Co-ordination: Riksbiliotektjenesten in Oslo
by: Tveteras, Harald L.
Published: (1970)

Proceedings of the Annual Conference, Association for Population/Family Planning Libraries and Information Centers-International (11th, Atlanta, Georgia, April 11-13, 1978).
by: Bergman, Rita F., Ed.
Published: (1978)

Cost Reduction for Special Libraries and Information Centers.
by: Slater, Frank, Ed.
Published: (1973)

Toward Information Centers
by: Jackson, Eugene
Published: (1971)

Military Librarians Workshop; Department of Defense Libraries in Transition (14th, 30 November - 2 December 1970). Conference Proceedings.
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Regional Access to Scientific and Technical Information, a Program for Action in the New York Metropolitan Area. Report of the Metro Science Library Project, 1966-67. Metro Miscellaneous Publications Series, Number 1.
by: Shank, Russell
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Proceedings of Military Librarians' Workshop (16th, October 2-4, 1972) Technology Transfer.
Published: (1972)

Improving Health Care through Information: Research Challenges for Health Sciences Librarians.
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Special Libraries and Information Centres in Brazil.
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Portraits of Special Libraries from the Top: The Introduction.
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Patent and Trademark Depository Libraries and the United States Patent and Trademark Office: A Model for Information Dissemination
by: Jenda, Claudine Arnold
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by: Young, Arthur P.
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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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