| 국내서 북써머리 | [606,041]권 읽음 | |
|---|---|---|
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[47]권  |
Location-Based Techn |  |
| When General Motors introduced OnStar in some of its Cadillac models in 1996, it was pioneering an industry known as location-based services ?or LBS. Because of the existence of global positioning satellites that can triangulate the position of a GPS transmitter anywhere in the world, GM had the idea that roadside assistance and other services could be delivered to drivers in their cars on a subscription basis. | ||
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Change by Design | |
| 저자 | Tim Brown | ||
| 출판사 | HarperBusiness | ||
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Lost And Founder | |
| 저자 | Rand Fishkin | ||
| 출판사 | Portfolio | ||
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Elon Musk | |
| 저자 | Walter Isaacson | ||
| 출판사 | Simon & Schuster | ||
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American Cities Shed | |
| The nation��셲 middle class is shrinking. Between 1970 and 2000, middle-class neighborhoods in the 100 largest cities in the nation dropped from 58 to 41 percent, outstripping the corresponding drop in mid-level incomes from 28 to 22 percent. While 55 percent of low-income families lived in middle-class neighborhoods in 1970, only 37 percent did in 2000. | ||
