Common Sense Planning for a Computer, or, What's It Worth to You?

Fuente: ERIC Institute of Education Sciences

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Bibliographic Details
Main Author:	Crawford, Walt
Format:	Recurso educativo Open Access
Language:	en
Published:	1984
Subjects:	Budgeting Computer Literacy Cost Effectiveness Decision Making Evaluation Criteria Microcomputers Needs Assessment Programing Purchasing Word Processing
Online Access:	Acceder al recurso
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Published: (1984)

What Do Products/Services Cost? How Do We Know?
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Published: (1995)

Buying Your Next (or First) PC: What Matters Now?
by: Crawford, Walt
Published: (1993)

Decisions under Uncertainty.
by: Malinconico, S. Michael
Published: (1984)

Common Sense Clones: Price and Performance in PC-Compatible Computers.
by: Crawford, Walt
Published: (1987)

Sermon on the Amount: Costing Out Children's Services.
by: Mielke, Laurie R.
Published: (1991)

An Introduction to Database Management Systems.
by: Warden, William H., III, et al.
Published: (1984)

Trade-offs: Quantifying Quality in Library Technical Services.
by: Mandel, Carol A.
Published: (1988)

Computers in Small Academic Libraries.
by: Jeney, Judith E.
Published: (1989)

Selecting Measures Applicable to Evaluation of On-Line Literature Searching.
by: Hitchingham, Eileen E.
Published: (1977)

Computer-Aided Decisions, Users' Groups.
by: Mason, Robert M.
Published: (1983)

Choosing a Microcomputer: A Success Story.
by: Mason, Robert M.
Published: (1983)

Interlibrary Loan Protocol: Development and Status [and] Microcomputers and ILL: The Practical Aspects.
by: Turner, Fay, et al.
Published: (1988)

Evaluating Software for Microcomputers.
by: Look, Hugh E.
Published: (1984)

Selection of Word Processing Software for Library Use.
by: Block, David, et al.
Published: (1983)

Cost-Utility Analysis in Educational Needs Assessment
by: Ross, John A.
Published: (2008)

Fairness in Book Fund Allocation.
by: Schad, Jasper G.
Published: (1987)

Commonsense System Pricing; Or, How Much Will that $1,200 Computer Really Cost?
by: Crawford, Walt
Published: (1984)

8-, 16-, and 32-Bit Processors: Characteristics and Appropriate Applications.
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Course Analysis: Techniques and Guidelines.
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Selecting and Implementing a Word Processor in the Library.
by: Nash, Sarah Hendrickson
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Learning about CD-ROM Technology: An Educator's Perspective on Sources, Issues, Criteria, Breakthroughs, and Research.
by: Halsey, Richard S.
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Cost Utility Analysis Applied to Library Budgeting.
by: Stitleman, Leonard
Published: (1968)

Simplified PPBS for the Librarian.
by: Bromberg, Erik
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An Explosion in Micro-Based Systems.
by: Matthews, Joseph R.
Published: (1991)

Micro-Automation--The Problems of Selection.
by: Armstrong, C. J.
Published: (1984)

What Is Information Really Worth?
by: Cooney, James P.
Published: (1987)

Information Wants of Seven Groups of Users Considering the Adoption or Adaptation of Instructional Systems. Interim Report.
by: Twelker, Paul A., et al.
Published: (1972)

The Identification of Common Library Goals, Objectives, and Activities Relative to a Planning, Programming, Budgeting System.
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Published: (1970)

CD-ROM: An Emerging Technology. Part 2: Planning and Management Strategies.
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Published: (1987)

Making Decisions about Automation for Small Libraries.
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The Effect of a New Bookmobile on Circulation in the Holmes County District Public Library: An Ex Post Facto Correlational Study.
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Laser/Optical Data Base Products: Evaluation and Selection.
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Common Sense Outline Processing.
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Published: (1986)

Common Sense and Telecommunications, Or; Reach Out, But Watch Your Wallet.
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Evaluating Information: An Information Literacy Challenge.
by: Fitgerald, Mary Ann
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The Latest and Greatest: Upgrade, Replace, or Stall? Part II: Software.
by: Crawford, Walt
Published: (1991)

Choosing Software for Text Processing.
by: Mason, Robert M.
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Library Planning and Decision-Making Systems.
by: Hamburg, Morris, et al.
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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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