Eldon® Expressions™ Wood Desk Accessories, Oak Xerox 193 Decoflex Hanging Personal Folder File, Blue Newell 314 Prismacolor Color Pencil Set Nu-Dell Executive Frame GBC Standard Therm-A-Bind Covers Boston 1645 Deluxe Heavier-Duty Electric Pencil Sharpener StarTAC ST7762 Hoover WindTunnel™ Plus Canister Vacuum Xerox 1984 Tennsco Lockers, Gray Wilson Jones® Four-Pocket Poly Binders 7160 3M Organizer Strips Rediform Wirebound "Phone Memo" Message Book, 11 x 5-3/4 #6 3/4 Gummed Flap White Envelopes 1.7 Cubic Foot Compact "Cube" Office Refrigerators Cardinal Slant-D® Ring Binder, Heavy Gauge Vinyl Fellowes Staxonsteel® Drawer Files I888 World Phone Xerox 1997 Staples Standard Envelopes Xerox 1964 VTech VT20-2481 2.4GHz Two-Line Phone System w/Answering Machine 282 DXL™ Angle-View Binders with Locking Rings, Black Advantus Push Pins, Aluminum Head Quartet Alpha® White Chalk, 12/Pack Accessory4 O'Sullivan 2-Shelf Heavy-Duty Bookcases
variable number of projecting pins that he had used in his Swedish army machine. Hagelin shrank the device to 6 X 4V& X 2 inches— smaller than the base of a standard telephone set—and to under three pounds, or about the weight of a dictionary-sized codebook. To operate it, the encipherer, after first setting the key elements, twirled a knob at the left to the plaintext letter, and revolved a handle at the right. The mechanism spun, and a little typewheel printed the output on a gummed tape. Hagelin even managed to have it print the ciphertext in five-letter groups and the plaintext in normal word-lengths (by using a rare letter as a word- spacer). Its speed averaged 25 letters per minute. In essence, it is a gear with a variable number of teeth. These turn a cipher alphabet through as many positions as there are teeth for that particular encipherment. The various parts of the mechanism interact to produce an incoherent running key with a very long period. Moreover, it
2000). Recall that the rule states only that we should provide to others the kind of actions they have provided us; it does not require us to have asked for what we have received in order to feel obligated to repay. For instance, the American Disabled Veterans organization reports that its simple mail appeal for donations produces a response rate of about 18 percent. But when the mailing also includes an unso- licited gift (gummed, individualized address labels), the success rate nearly doubles to 35 percent. This is not to say that we might not feel a stronger sense of obliga- tion to return a favor we have requested, but such a request is not necessary to pro- duce our feeling of indebtedness. If we reflect for a moment about the social purpose of the reciprocity rule, we can see why this is the case. The rule was established to promote the development
annaabi.ee 
