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American Cities Shed |
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| 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. |
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AI 以묒떖 �깮�궛�꽦 �뼢�긽怨� 臾댁뿭 �솗���: |
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| 21�꽭湲� 珥덈컲遺��꽣 �씠�뼱吏� �뵒吏��꽭 �쟾�솚��� �씤怨듭���뒫(AI)�쓽 湲됯꺽�븳 諛쒖쟾怨� �븿猿� �깉濡쒖슫 援�硫댁쓣 留욎씠�븯怨� �엳�떎. AI�뒗 �떒�닚�븳 湲곗닠 �쁺�떊�쓣 �꽆�뼱, �깮�궛�꽦(productivity)�쓣 洹쇰낯�쟻�쑝濡� �옱援ъ꽦�븯�뒗 �옒�쑝濡� �옄由� �옟�븯�떎. |
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Companies Learn and |
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| Most organisms behave like complex adaptive systems. As their parts sense and respond to conditions outside the system that constantly change, each part interacts with and influences the other parts in the system. Ultimately, this yields new patterns of behavior for the overall system. |
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Massively Multi-Play |
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| In 2001, an unknown 38-year-old academic named Edward Castronova was teaching at Cal State University in Fullerton, California, and feeling like a failure. His career had never gone anywhere, and he felt like he was at a dead end. He was so lonely at night he just sat around and played video games. |
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�뼱瑜몄씠 �릺湲� �쟾�뿉 瑗� �븳 踰덉�� �끉�뼱瑜� |
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| 저자 | �뙋�뜦(�뿭:�븯���吏�) |
| 출판사 | 誘몃뵒�뼱�댉 |
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[242]권 
