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EAN-139780773534155   EAN-13 barcode 9780773534155
Product NameImages Of Justice: A Legal History Of The Northwest Territories And Nunavut As Traced Through The Ye
LanguageEnglish
CategoryBook / Magazine / Publication
Short DescriptionPaperback
Amazon.comA Buy on Amazon ~ 0773534156
SKUCUP-BWS-1775-S3A39
Price New24.93 US Dollars    (curriencies)
Price Used24.87 US Dollars    (curriencies)
Long DescriptionIn a display case at the entrance to the Yellowknife courthouse are a collection of fourteen Inuit carvings that represent landmark cases in the legal history of the Northwest Territories. These cases, which came to trial between 1955 and 1970, and the carvings that represent them illuminate a pivotal period of social change when the Inuit camp system was eroding and age-old practices and traditions were being called into question.Dorothy Harley Eber tells the stories behind the carvings and provides fascinating insights into the unique situations that developed as the Inuit came in contact with Canada's justice system. "Images of Justice" resonates with voices of the North and comes alive through interviews with many of those involved in the cases - defendants, judges, and prosecutors. Eber also provides valuable information on the little-known carvers who created these remarkable works of art. At a time when alternative legal systems for Native peoples are being debated, "Images of Justice" provides a lively, accessible account of the northern courts, their evolution, and their future in a changing northern society.
Created11-19-2012 5:23:35pm
Modified12-23-2013 8:56:47am
MD54717c170fe89d65a97a841cf49b06fd1
SHA256b9ab774b2700205fc1e097cae944accdf822e9353cb9cfab0e8235b1876f4f0a
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Article of interest

Barcodes are a graphical representation of information that can be easily read by machines. People read text easy enough but machines find this to be too complex so we use barcodes to simplify the process.

Barcodes can store numbers, letters and all the special characters. What can be stored in the barcode depends on which type of barcode is being used. But the basics of how a barcode works is the same regardless of what type of code it is, what information is stored in the barcode or what type of scanner is being used.

barcode scanIt all starts with the scan. The scanner, regardless of which type you are using, will examine the barcode image. The lines (or blocks in the case of 2D barcodes) will either reflect or absorb light. When we look at the barcode, we tend to see the dark stripes and think of those as the important parts. Those are the parts that absorb the light and the white parts reflect the light. So the scanners tend to see the barcodes in reverse of how we think of them. But the dark and light portions of the code on their own don't automatically become the information stored in the code. In most cases, it is the relative placement and size of each dark and light stripe (or block) that make up the information. There are also special markers that help the scanner know which direction the barcode is facing when it is scanned. This allows the scanning process to work even if the barcode is upside down when it is scanned. The scanner simply processes the scanned data in reverse in this case.

barcode oscolloscopeTaking a look at an oscolloscope screen as a scanner passes over barcode, you can see that the stripes reflect back light and the scanner registers the changes as high and low levels. So what looks like a simple image is really a rather complex set of layered encryption to store the data. The encryption isn't done to hide the information in this case. Instead it is done to make it easy for the machine to read the information. Since the base language of machines is binary (1 and 0) it is easy for them to read this type of information even if it takes several steps to turn this back into something that people can understand.

binaryThe size of each high and low are combined to make binary data. A series of 1 (one) and 0 (zero) values which are strung together then decoded into the actual information. Up to this point, the process is the same for all barcodes regardless of how they are stored. Getting the lines or dots into binary is the easy part for the machine. The next step is to make this binary code into something useful to people. That step depends on  which type of barcode is being scanned. Each type of barcode has its own encoding methode. Just like human languages, what seems to be two similar words (or barcodes in this case) could actually be two very different values even though they have the same basic letters (or bars).

So you can see that the scanning devices need to know not only how to turn the bars or dots into binary, but after they have done that they need to know how to turn that binary string into the original information. But regardless of the encoding process the basic steps are the same. Process the light and dark areas, convert them to binary, decode the binary, pass the information on to the receiving device which is normally a computer program of some sort.

Once the decoded data reaches the computer program, there is no telling how the information is to be used. The grocery store will use the information to keep track of the products you purchased as you go through the register. A manufacturer will use the code to identify where they are storing their parts. And shipping companies use the codes to keep track of the packages they are delivering.

Now that you know a little about the mechanical portion of the process, take some time to learn about the different types of barcode scanners and the different ways the information can be encoded into barcodes.

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