Information Gathering And Disseminating Activities of the National Library of Medicine.

Fuente: ERIC Institute of Education Sciences

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Bibliographic Details
Format:	Recurso educativo Open Access
Language:	en
Published:	1970
Subjects:	Computer Programs Information Dissemination Information Needs Information Retrieval Information Storage Information Systems Medical Libraries Relevance (Information Retrieval)
Online Access:	Acceder al recurso
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Optimum Degree of User Participation in SDI Profile Generation.
by: Evans, L.
Published: (1973)

Information Users versus Information Systems.
by: Brown, Jack E.
Published: (1978)

The Information Bazaar; Sixth Annual National Colloquium on Information Retrieval, May 8-9, 1969, Philadelphia, Pennsylvania.
by: Schultz, Louise, Ed.
Published: (1969)

Book Selection from MARC Tapes.
by: Wainwright, Jane, et al.
Published: (1973)

SDI Investigation, 1967-1969. Volumes 1-5.
by: Clague, P.
Published: (1971)

Key Papers in Information Science.
by: Elias, Arthur W., Ed.
Published: (1971)

Full members of the team; Medical Librarians in the Patient Care Setting
by: Farmer, Jean
Published: (1977)

Linking Library Users: A Culture Change in Librarianship.
by: Koenig, Michael E. D.
Published: (1990)

The Computerized File Management System
by: Buginas, Scott J., et al.
Published: (1973)

Videotex: Chimera or Dream Machine.
by: Ball, A. J. S.
Published: (1981)

Available Data Banks for Library and Information Services.
by: Patrinostro, Frank S., Comp., et al.
Published: (1973)

Health Professionals' Attitudes towards Evidence-Based Medicine and the Role of the Information Professional in Exploitation of the Research Evidence.
by: Lewis, Ruth A., et al.
Published: (1998)

Business and Libraries: A Winning Partnership.
by: Barrett, Deanne, et al.
Published: (1998)

Evaluation of On-Line Searching in MEDLARS (AIM-TWX) by Biomedical Practitioners.
by: Lancaster, F. Wilfrid
Published: (1972)

The Yield of Bibliographic Databases.
by: Kowalski, Kazimierz, et al.
Published: (1992)

Faculty Relevance Criteria: Internalized User Needs.
by: Westbrook, Lynn
Published: (2001)

Illustrative Computer Programming for Libraries; Selected Examples for Information Specialists. Contributions in Librarianship and Information Science, No. 12.
by: Davis, Charles H.
Published: (1974)

A Personal Library Filing System
by: McIsaac, Donald N., et al.
Published: (1974)

Subjective versus Objective Relevance in Bibliographic Retrieval Systems.
by: Swanson, Don R.
Published: (1986)

A Versatile, User-Oriented, Computerized Library System.
by: Neuron, Eric
Published: (1966)

Information Storage and Retrieval. Reports on Analysis, Search, and Iterative Retrieval.
by: Salton, Gerard
Published: (1968)

SDILINE Evaluation.
by: Blase, Nancy G.
Published: (1975)

Searching CA Condensates, On-Line and Batch.
by: Kaminecki, Ronald M., et al.
Published: (1975)

The U.S. National Library of Medicine and International MEDLARS Cooperation
by: Corning, Mary E.
Published: (1972)

On Information Storage Models.
by: Leimkuhler, Ferdinand F.
Published: (1969)

New Concepts of Media and Their Management at the University of Kentucky Medical Center
by: Hamlin, Omer, Jr., et al.
Published: (1971)

Issues in Clinical Information Delivery.
by: Marshall, Joanne G.
Published: (1993)

Wisconsin's ERIC On-Line Information Retrieval - Demonstration and Research. (Information Retrieval and Research Project). Final Report.
by: Lambert, Roger H., et al.
Published: (1975)

Information Literacy. ERIC Digest.
by: Plotnick, Eric
Published: (1999)

Put a Prussian Spy in Your Library.
by: King, Jack
Published: (1978)

Access is Ownership: The People Become the Public Printer.
by: Barkley, Daniel, et al.
Published: (1995)

The Problem of "Noise"
by: Vagianos, Louis
Published: (1972)

Current Awareness Bulletin, Its Preparation and Use in a Non-Automated Library
by: Kalvinskas, Louanne A.
Published: (1971)

System Requirements for On-Line and Batch Retrieval.
Published: (1976)

The Evaluation of SISMAKOM (Computerized SDI Project).
Published: (1983)

Optical Disk Systems. A Guide to the Technology and the Applications in the Fields of Publishing and Library and Information Work. IFLA Professional Reports, No. 12.
by: Hendley, A. M.
Published: (1986)

The Development of Hertis.
by: Wright, G. H.
Published: (1969)

Some Fundamental Concepts of Information Retrieval.
by: Wilson, Patrick
Published: (1978)

Project SEEK, 1979-1982. Final Report.
Published: (1982)

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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