Computer Simulation: A Tool for Analysis of Library Service

Fuente: ERIC Institute of Education Sciences

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Bibliographic Details
Main Author:	Reed, Mary Jane Pobst
Format:	Recurso educativo Open Access
Language:	en
Published:	1976
Subjects:	Computer Oriented Programs Delivery Systems Library Circulation Library Materials Library Research Library Services Models Simulation
Online Access:	Acceder al recurso
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Computer Simulation of the Circulation Subsystem of a Library
by: Shaw, W. M., Jr.
Published: (1975)

A Simulation of Reserve Book Activities in a College Library Using GPSS/360
by: Baumler, J. V., et al.
Published: (1975)

Study for the Design of an Optimum System for Mail Order Book Delivery Service in the State of Washington.
by: Reed, Mary Jane Pobst, et al.
Published: (1974)

A Simulation Model and Data for Library Planning.
by: Millham, Charles B.
Published: (1975)

The Delivery of Computer-Based Bibliographic Search Services by Academic and Research Libraries.
by: Gardner, Jeffrey J., et al.
Published: (1974)

Books By Mail: Moving the Library to Disadvantaged Adults.
by: Reed, Mary Jane, et al.
Published: (1974)

A Network Management Tool: Computer Simulation of Interlibrary Lending. I: The Report. II: A User's Manual for Models.
by: Vrooman, Hugh T., et al.
Published: (1979)

The Washington Library Network's Computerized Bibliographic System.
by: Reed, Mary Jane Pobst
Published: (1975)

Document Delivery Systems in ARL Libraries. Kit 82.
Published: (1982)

Self-Check Success
by: Zeiher, Lynne
Published: (2006)

The Washington Library Network's Computerized Bibliographic System
by: Reed, Mary Jane Pobst
Published: (1975)

Book Availability and Delivery Service.
by: Goehlert, Robert
Published: (1978)

Expanding Service: Public Access Microcomputers.
by: Julien, Don
Published: (1985)

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

Decision Support System in the Management of Resource-Sharing Networks.
by: Dubey, Yogendra P.
Published: (1984)

Library Computing
Published: (1985)

Computer Simulation of Library Operations. An Evaluation of an Administrative Tool
by: Stephens, Irving E.
Published: (1970)

Telecommunications in ARL Libraries. SPEC Kit 98.
Published: (1983)

Creating a Contactless Pickup Service at the University of Michigan Library: Iterative Service Design and Interaction Safety during the Pandemic
by: Haines, Kate, et al.
Published: (2021)

The Cost of Interlibrary Loan Services in a Medium-Sized Academic Library.
by: Naylor, Ted F.
Published: (1997)

Continuing Education in a Problem Solving Model
by: Penland, Patrick R.
Published: (1975)

Fitting the Pieces Together: Developing Better Service for End-Users.
by: Bridges, Peggy Bass, et al.
Published: (2000)

A Mathematical Model of the Illinois Interlibrary Loan Network: Project Report Number 2.
by: Rouse, William B., et al.
Published: (1975)

Public Library Services for Aging in the Eighties. A 1981 White House Conference on the Aging Background Paper.
by: Turock, Betty J.
Published: (1981)

Microform Informing: Use of DIALOG SDI to Produce a Microfiche Announcement Bulletin.
by: Rowe, Gladys E.
Published: (1984)

Document Delivery: St. John's University's Experience with Full-Text Services.
by: Pessah, Roberta, et al.
Published: (1995)

On the Shelf in 48 Hours
by: Hatcher, Marihelen
Published: (2006)

Delivery Speed, Timeliness and Satisfaction: Patrons' Perceptions About ILL Service.
by: Weaver-Meyers, Pat L., et al.
Published: (1996)

A Study of Library Delivery Systems with an Emphasis on Bookmobiles vs Books-By-Mail.
by: Benson, James, et al.
Published: (1980)

Delivering Library Services to Users: A Case Study of the Sooner Xpress Service at the University of Oklahoma
by: Murphy, Molly, et al.
Published: (2007)

The High Cost of Reference: The Need to Reassess Services and Service Delivery.
by: Summerhill, Karen Storin
Published: (1994)

Computerized Networks Among Libraries and Universities: An Administrator's Overview.
by: Mayhew, Lewis B.
Published: (1975)

Evaluation of the Document Delivery Service Provided by University Libraries, Twin Cities Campus, University of Minnesota. Final Report of a Research Project.
by: D'Elia, George, et al.
Published: (1984)

The Computer as Library Aide.
by: Truett, Carol
Published: (1983)

Matrix Management in Practice in Access Services at the NCSU Libraries
by: Harris, Colleen S.
Published: (2010)

A Planning Process for Automated Shared Circulation Systems.
by: Yankus, Anthony G.
Published: (1980)

Special Deliveries: Towards a Methodology for Generous Fulfillment of Special Collections Interlibrary Loan Requests
by: Griffin, Melanie, et al.
Published: (2017)

Online Bibliographic Services
by: Gardner, Jeffrey J., et al.
Published: (1976)

Personalized Boutique Service: Critical to Academic Library Success?
by: Tilley, Elizabeth
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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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