|Product Name||A Christmas Hope: A Novel|
|Category||Book / Magazine / Publication|
|Amazon.com||Buy on Amazon ~ 0345530756|
|Price New||2.49 US Dollars (curriencies)|
|Price Used||1.25 US Dollars (curriencies)|
|Width||0.88 inches (convert)|
|Height||7.5 inches (convert)|
|Length||5.35 inches (convert)|
|Weight||9.76 ounces (convert)|
|Features||Used Book in Good Condition|
|Long Description||Anne Perry’s “vastly entertaining” ( The Star-Ledger ) holiday novels are “as delicious as mince pie and plum pudding” (Milwaukee Journal Sentinel ). A Christmas Hope is just as delectable—the gripping story of an unforgettable battle between goodness and evil in Victorian London—and a lonely woman’s search for meaning in her life. Although she lacks for nothing, Claudine Burroughs dreads the holiday season for forcing her to face how empty her life has become. She no longer expects closeness with her coldly ambitious husband, and she has nothing in common with their circle of wealthy, status-minded friends. The only time she is remotely happy is when she volunteers at a woman’s clinic—a job her husband strongly disapproves of. Then, at a glittering yuletide gala, she meets the charming poet Dai Tregarron and finds her spirits lifted. But scarcely an hour later, the charismatic Dai is enmeshed in a nightmare—accused of killing a young streetwalker who had been smuggled into the party. Even though she suspects that an upper-class clique is quickly closing ranks to protect the real killer, Claudine vows to do her utmost for Dai. But it seems that hypocritical London society would rather send an innocent poet to the gallows than expose the shocking truth about one of their own. Nevertheless, it’s the season of miracles and Claudine finally sees a glimmer of hope—not only for Dai but for a young woman she befriends who is teetering on the brink of a lifetime of unhappiness. Anne Perry’s heartwarming new holiday novel is a celebration of courage, faith, and love for all seasons. PRAISE FOR THE CHRISTMAS NOVELS OF ANNE PERRY “Perry’s Victorian-era holiday mysteries . . . are for many an annual treat.”— The Wall Street Journal A Christmas Garland “In Anne Perry’s gifted hands, the puzzle plays out brilliantly.”—Greensboro News & Record A Christmas Homecoming “Could have been devised by Agatha Christie . . . [Perry is] a modern master.” —Pittsburgh Post-Gazette A Christmas Odyssey “[Perry] writes with detail that invades the senses.” —Lincoln Journal Star A Christmas Promise “Poignant . . . should be on the Christmas stocking list of anyone who likes a sniffle of nostalgia.” —The Washington Times A Christmas Grace “[A] heartwarming, if crime-tinged, complement to the holiday season.”— Booklist|
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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.
It 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.
Taking 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.
The 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.