The Effect of Response Time Upon Utilization of an Information Retrieval System; A Simulation.

Fuente: ERIC Institute of Education Sciences

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Bibliographic Details
Main Authors:	Hayes, R. M., Reilly, K. D.
Format:	Recurso educativo Open Access
Language:	en
Published:	1967
Subjects:	Information Services Information Sources Information Systems Information Utilization Simulation Systems Analysis
Online Access:	Acceder al recurso
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Specifications of a Mechanized Center for Information Services for a Public Library Reference Center. Final Report. Part 5, Outline for a Simulation Study of the California State Library Network.
by: Reilly, K. D.
Published: (1968)

An Analytic Approach to Information Management.
by: Gillman, Peter L.
Published: (1985)

Are Libraries Causing or Utilizing the Information Explosion?
by: Gaffner, Haines B.
Published: (1973)

Information Handling in the Life Sciences.
by: Steere, William C., Ed.
Published: (1970)

Digital Computer Simulation Models of Library-Based Information Retrieval Systems. Reports on File Organization Studies.
by: Reilly, Kevin D.
Published: (1969)

Comparison Guide to Selection of Databases and Database Services.
by: Ewbank, W. Bruce
Published: (1982)

The Emerging Information Professional.
by: Crickman, Robin D.
Published: (1979)

Bundles in the Wild: Managing Information To Solve Problems and Maintain Situation Awareness.
by: Gorman, Paul, et al.
Published: (2000)

Source Selection among Information Seekers: Ideals and Realities.
by: Julien, Heidi, et al.
Published: (2000)

Fee or Free: The Effect of Charging on Information Demand.
by: Huston, Mary M.
Published: (1979)

The Dissemination and Utilization of Educational Information: The Roles of Knowledge Linkers.
by: Auster, Ethel
Published: (1983)

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)

Developing Information Systems for Competitive Intelligence Support.
by: Hohhof, Bonnie
Published: (1994)

Information Services Manual: Procedures of the CEC Information Center.
by: Parrish, Joyce
Published: (1972)

Big Growth Ahead in Technical Information
Published: (1973)

A Hierarchic System for Information Usage.
by: Lu, John, et al.
Published: (1972)

The Dilemma of the Subjective in Information Organisation and Retrieval.
by: Neill, S. D.
Published: (1987)

Reference Service in the Information Network.
by: Bunge, Charles A.
Published: (1970)

Scientific and Technical Information in Canada, Part 1.
Published: (1969)

Mechanized Information Services in the University Library--Introduction and Summary. Final Report on Mechanized Information Services in the University Library. Phase I - Planning. Part 1.
by: Hayes, R. M.
Published: (1967)

Documentation of the United Nations and Other Intergovernmental Organizations: Information and Functional Purposes, Processing and Utilization. A Bibliography.
by: Dimitrov, Theodore D.
Published: (1972)

Critical Issues in Evaluating the Impact of IT on Information Activity in Academic Research: Developing a Qualitative Research Solution.
by: Barry, Christine A.
Published: (1995)

Information Structure and Bibliographic Instruction
by: Frick, Elizabeth
Published: (1975)

The Information Environment. Education and Curriculum Series No. 3. Syllabus for IST 501.
by: Taylor, Robert S.
Published: (1978)

INFORMATION MANAGEMENT IN ENGINEERING EDUCATION, PROCEEDINGS AND RECOMMENDATIONS OF THE CONFERENCE ON INFORMATION SOURCES, SYSTEMS AND MEDIA IN ENGINEERING EDUCATION HELD AT LEHIGH UNIVERSITY (MAY 19-20, 1966).
by: TAYLOR, ROBERT S.
Published: (1966)

Information for the Community.
by: Kochen, Manfred, Ed., et al.
Published: (1976)

New Bases for Library and Information Services in Metropolitan Areas: Information Usage; Beliefs, Attitudes, and Exposure to the Mass Media. Final Report.
by: Goldstein, Bernard, et al.
Published: (1972)

SPIRES (STANFORD PHYSICS INFORMATION RETRIEVAL SYSTEM). ANNUAL REPORT.
by: PARKER, EDWIN B.
Published: (1967)

Personal Information Systems
by: Burton, Hilary D.
Published: (1973)

SPIRES (Stanford Public Information REtrieval System). Annual Report (2d, 1968).
by: Parker, Edwin B., et al.
Published: (1969)

Accounting as Evaluation, as Reporting: The Uses of Online Accounting Systems.
by: Clark, Philip M.
Published: (1985)

Perception and Use of Information Sources by Chief Executives in Environmental Scanning.
by: Choo, Chun Wei
Published: (1994)

A Comparison of the Effects of Library Control Systems.
by: Nance, Richard E.
Published: (1967)

Modelling Information System Dynamics: A Perspective.
by: Oswitch, Pauline
Published: (1983)

Design Study for Project on Standard Operating Procedures for Technical Library Services.
by: Libbey, Miles A., et al.
Published: (1970)

Nature of Typical Data Bases. Final Report on Mechanized Information Services in the University Library, Phase I - Planning. Part 5.
by: Reilly, Kevin D.
Published: (1967)

Information Dissemination in Action.
Published: (1996)

Federal Information Resources: Identification, Availability and Use; Proceedings of a Conference, Washington, D.C., March 26-27, 1970.
Published: (1970)

A Research Agenda for the Eighties: Information Professionals Offer Priorities for Future Projects.
Published: (1981)

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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