|Product Name||Policy Indicators: Links Between Social Science And Public Debate (Urban And Regional Policy And Development Studies)|
|Category||Book / Magazine / Publication|
|Amazon.com||Buy on Amazon ~ 0807865656|
|Price New||58.00 US Dollars (curriencies)|
|Price Used||74.23 US Dollars (curriencies)|
|Width||1.08 inches (convert)|
|Height||9 inches (convert)|
|Length||6 inches (convert)|
|Weight||22.24 ounces (convert)|
|Features||Used Book in Good Condition|
|Long Description||Duncan MacRae analyzes the ways in which experts can aid a political community in choosing public statistics for citizens to use in making policy judgments. In contrast to the study of social indicators, which has emphasized descriptions and models of social change, he stresses that the relevant measures should be selected in view of their potential applications. The usefulness of a public statistical series depends on the goals it represents and on our knowledge of how to act collectively to achieve those ends. The measures chosen, MacRae notes, can include gauges of social objectives, such as health and education improvements or crime reduction, and administrative inputs that promote them. He recommends, however, that the measures should be organized around general ends such as net economic benefit, subjective well-being, and equity. Knowledge about how to further collective aims, MacRae contends, requires strenthening of "technical communities" of researchers who study the means to the ends that policy indicators measure. Policy Indicators provides a critical review of the field of social indicators, stressing the uses of statistics in policy debate. For applied social scientists and policy analysts, it presents broad proposals for the roles of their fields in a democracy. Originally published in 1985. A UNC Press Enduring Edition -- UNC Press Enduring Editions use the latest in digital technology to make available again books from our distinguished backlist that were previously out of print. These editions are published unaltered from the original, and are presented in affordable paperback formats, bringing readers both historical and cultural value.|
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Article of interest
This symbology was developed by the Plessey Company in England. A variation of Plessey was used by the ADS Company and is known as Anker Code. Anker Code was used in European point of sale systems prior to the advent of EAN. Another variation is known as the MSI Code.
Plessey offers a full range of HEX digits 0-F. The bit pattern of the bits sets the high order bit at the right which is reverse of how we normally think of bits these days. (MSI puts the high order bit on the left).
The start bar is always "D" (1101) and the terminator can be two binary 1's (11) if the barcode is to be read from left to right only. If the barcode can be read in either direction the terminator will be a single binary 1 (1) and is followed by a reverse of the start character or the "B" (1011).
|Digit||Strip Bits||Binary Value|
|STOP < >||110110100110110||11011|
You can use the stripe bits can be used to generate the graphic pattern. If you want to see this trick, check out the MSI Code page. Plessey uses a cyclic (or polynomial) check code technique which is applied to the reading of barcode labels and transmission of data. This technique is a fair compromise between the extra redundancy and the error detecting power. Roughly one undetected error per hundred million 6 digit transactions.
If you would like to generate your own Plessey Barcode, please visit our free barcode generator page. Make your code, save it and use it how ever you like.