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Bibliographic Details
Main Author:	Spencer, Carol C.
Format:	Recurso educativo Open Access
Language:	en
Published:	1971
Subjects:	Cost Effectiveness Interlibrary Loans Library Expenditures Library Technical Processes Medical Libraries Operating Expenses Regional Libraries Reprography Task Analysis Unit Costs
Online Access:	https://eric.ed.gov/?id=EJ039711
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author	Spencer, Carol C.
author_facet	Spencer, Carol C. Spencer, Carol C.
collection	Education Resources Information Center
contents	Random Time Sampling With Self-Observation for Library Cost Studies: Unit Costs of Interlibrary Loans and Photocopies at a Regional Medical Library Spencer, Carol C. Cost Effectiveness Interlibrary Loans Library Expenditures Library Technical Processes Medical Libraries Operating Expenses Regional Libraries Reprography Task Analysis Unit Costs Under comparable conditions, the cost of providing a photocopy did not exceed the cost of lending an original document. (Author)
format	Recurso educativo Open Access
id	eric_EJ039711
institution	ERIC Institute of Education Sciences
language	en
publishDate	1971
record_format	eric
spellingShingle	Random Time Sampling With Self-Observation for Library Cost Studies: Unit Costs of Interlibrary Loans and Photocopies at a Regional Medical Library Spencer, Carol C. Cost Effectiveness Interlibrary Loans Library Expenditures Library Technical Processes Medical Libraries Operating Expenses Regional Libraries Reprography Task Analysis Unit Costs Random Time Sampling With Self-Observation for Library Cost Studies: Unit Costs of Interlibrary Loans and Photocopies at a Regional Medical Library Spencer, Carol C. Cost Effectiveness Interlibrary Loans Library Expenditures Library Technical Processes Medical Libraries Operating Expenses Regional Libraries Reprography Task Analysis Unit Costs Under comparable conditions, the cost of providing a photocopy did not exceed the cost of lending an original document. (Author)
title	Random Time Sampling With Self-Observation for Library Cost Studies: Unit Costs of Interlibrary Loans and Photocopies at a Regional Medical Library
topic	Cost Effectiveness Interlibrary Loans Library Expenditures Library Technical Processes Medical Libraries Operating Expenses Regional Libraries Reprography Task Analysis Unit Costs
url	https://eric.ed.gov/?id=EJ039711

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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VUFIND_SESSION	"bfae029c04772dc077933dfabaac54b3"
ui	"standard"
language	"en"

Session

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VUFIND_LOCAL_DIR	"/usr/local/vufind/local"
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REMOTE_ADDR	"216.73.217.169"
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REQUEST_SCHEME	"https"
CONTEXT_PREFIX	""
CONTEXT_DOCUMENT_ROOT	"/usr/local/vufind/public"
SERVER_ADMIN	"admin@localhost"
SCRIPT_FILENAME	"/usr/local/vufind/public/index.php"
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SERVER_PROTOCOL	"HTTP/1.1"
REQUEST_METHOD	"GET"
QUERY_STRING	""
REQUEST_URI	"/Record/eric_EJ039711/Details"
SCRIPT_NAME	"/index.php"
PHP_SELF	"/index.php"
REQUEST_TIME_FLOAT	1784820768.3751
REQUEST_TIME	1784820768

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Environment & details:

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VUFIND_SESSION	"bfae029c04772dc077933dfabaac54b3"
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Session

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FlashMessenger	Laminas\Stdlib\ArrayObject {#1583}
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REDIRECT_HTTPS	"on"
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REDIRECT_STATUS	"200"
VUFIND_LOCAL_DIR	"/usr/local/vufind/local"
HTTPS	"on"
SSL_TLS_SNI	"info.umar.mx"
HTTP_ACCEPT	"/"
HTTP_USER_AGENT	"Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)"
HTTP_COOKIE	"VUFIND_SESSION=bfae029c04772dc077933dfabaac54b3; ui=standard; language=en"
HTTP_ACCEPT_ENCODING	"gzip, br, zstd, deflate"
HTTP_HOST	"info.umar.mx"
PATH	"/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/snap/bin"
SERVER_SIGNATURE	"<address>Apache/2.4.66 (Ubuntu) Server at info.umar.mx Port 443</address>\n"
SERVER_SOFTWARE	"Apache/2.4.66 (Ubuntu)"
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SERVER_ADDR	"200.23.222.19"
SERVER_PORT	"443"
REMOTE_ADDR	"216.73.217.169"
DOCUMENT_ROOT	"/usr/local/vufind/public"
REQUEST_SCHEME	"https"
CONTEXT_PREFIX	""
CONTEXT_DOCUMENT_ROOT	"/usr/local/vufind/public"
SERVER_ADMIN	"admin@localhost"
SCRIPT_FILENAME	"/usr/local/vufind/public/index.php"
REMOTE_PORT	"12326"
REDIRECT_URL	"/Record/eric_EJ039711/Details"
GATEWAY_INTERFACE	"CGI/1.1"
SERVER_PROTOCOL	"HTTP/1.1"
REQUEST_METHOD	"GET"
QUERY_STRING	""
REQUEST_URI	"/Record/eric_EJ039711/Details"
SCRIPT_NAME	"/index.php"
PHP_SELF	"/index.php"
REQUEST_TIME_FLOAT	1784820768.3751
REQUEST_TIME	1784820768

Environment Variables empty

Registered Handlers

0. Whoops\Handler\PrettyPageHandler

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