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A pseudo-noise code (PN code) or pseudo-random-noise code (PRN code) is one that has a spectrum similar to a random sequence of bits but is deterministically generated. The most commonly used sequences in direct-sequence spread spectrum systems are maximal length sequences , Gold codes , Kasami codes , and Barker codes .
JumpStart Adventures 3rd Grade: Mystery Mountain is a personal computer game in Knowledge Adventure's JumpStart series of educational software. As the title suggests, the game is intended to teach a third grade curriculum. This is the only version of this game created and, unusually for Knowledge Adventure, was still being sold over fifteen ...
Open Library is an online project intended to create "one web page for every book ever published". Created by Aaron Swartz, [3] [4] Brewster Kahle, [5] Alexis Rossi, [6] Anand Chitipothu, [6] and Rebecca Hargrave Malamud, [6] Open Library is a project of the Internet Archive, a nonprofit organization.
The Online Books Page was the second substantial effort to catalog online texts, but the first to do so with the rigors required by library science. It first appeared on the Web in the summer of 1993. The Internet Public Library came shortly thereafter. The web site was named one of the best free reference web sites in 2003 by the Machine ...
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Janet and John is a series of early reading books for children, originally published in the UK by James Nisbet and Co in four volumes in 1949–50, and one of the first to make use of the "look and say" approach. Further volumes appeared later, and the series became a sales success in the 1950s and 60s, both in the UK and in New Zealand.
STAR Reading, STAR Early Literacy and STAR Math are standardized, computer-adaptive assessments created by Renaissance Learning, Inc., for use in K–12 education. Each is a " Tier 2 " assessment of a skill (reading practice, math practice, and early literacy, respectively that can be used any number of times due to item-bank technology.