èä½æ¨©ä¿è·å»¶é·ã¯æ¬å½ã«å½çã«ç¹ããã®ãï¼
http://internet.watch.impress.co.jp/cda/news/2006/09/22/13380.html
ã©ããã9/28ã«ç· åã®ããç¥ç財ç£æ¦ç¥æ¬é¨ãã³ã³ãã³ãå°é調æ»ä¼ ä¼ç»ã¯ã¼ãã³ã°ã°ã«ã¼ãã«ãããæè¦åéã«é¢é£ãã¦ãèä½æ¨©å»¶é·ã主張ãã¦ããå£ä½ãå¤ãããã§ãã
ãæ¥æ¬æ¿åºã¯ç¥è²¡ç«å½ãç®æãã¨ãã¦ããããæ¥æ¬ã ãèä½æ¨©ã®ä¿è·æéãçãã¨ãããã¨ã¯ãããã ãæ¥æ¬ã®è²¡ç£ã失ããããã¨ã«ãªããã¨ããã
ã ããã§ãããæ¬æ°ã§ãããªãã¨ãè¨ã£ã¦ããã®ã§ãããããããããæ¥æ¬ã®å½çãèããã®ã§ããã°ãããã¨ã¯å ¨ãå対ã®ä¸»å¼µããã¹ãã ã¨åã¯èãã¾ãã以ä¸ããããè«è¨¼ãã¾ãã
èªåãæ®ã10000人ã®èä½ç©ãxåã§å©ç¨ãã10000人ãèªåã®èä½ç©ãyåã§å©ç¨ããã®ã§ããã°ãèªåã«ã¨ã£ã¦ã¯ã10000(x-y)åã®æçã«ãªãã¾ããèªåã¨ä»äººã«éããç¡ãå ´åã«ã¯ãå ¸åçãªã¼ããµã ã²ã¼ã ã§ããããã«ãããã¯ããã¾ã§ãã©ã³ã¶ã¯ã·ã§ã³ã«ãããã³ã¹ããã¼ãã¨ãããã¨ãã空æ³çãªã¢ãã«ã«åºã¥ãè¨ç®ã«ãªãã¾ãã
ããã§ã¯å½å®¶ãã¯ãã¬ãã«ã§ã®åæ¯ã主é¡ã ãããªã®ã§ï¼ããã ãã®è¦ç¹ã§ç©äºãèãã¦è¯ãã®ã§ãããã?ï¼ã
- xãæ¥æ¬ã®æ¨©å©æ
- yãå½å¤ã®æ¨©å©æ
ã¨ãã¾ãã
ããã«ãæã ã¯ç©ºæ³ã«åºã¥ãã¦è¨ç®ãé²ããããã«ã¯ãããªãã®ã§ãããã§ãã©ã³ã¶ã¯ã·ã§ã³ã«ãããã³ã¹ããå®éã«ç®å ¥ãã¦ã¿ã¾ãããã
- ã³ã¹ãçãz(0<=z<=1)ã
- ãã®ãã¡èª²ç¨ã»æ¨©å©å£ä½ææ°æãªã©ã«ããã³ã¹ãçãz1
- æ®ãã®ã³ã¹ãçãz2
ã¨ãã¾ãã
èä½è ã®è¦ç¹ã§è¨ãã°ãæ¥æ¬ã®èä½ç©ã«ã¤ãã¦x(z1+z2), å½å¤ã®èä½ç©ã«ã¤ãã¦ãy(z1+z2)ã®ã³ã¹ãããããã¾ããåæã®éããæ¥æ¬å ¨ä½ããã¯ãçã«è¦ãã®ã§ããã°ãxz1ããã³yz2ã¯ç¡è¦ãã¾ããæ¥æ¬ã®èä½è ãããããç¨éã»ææ°æãå¾´åãã¦ããå ¥ãã®ã¯å½åº«ãå©æ¨©å£ä½ã§ãããå½å¤ã®èä½è ã®ã³ã¹ãï¼ä»äººã®ä¸å©çãªãã¦ããããã£ã¦ããæ¥æ¬ã®æçã¨ã¯ç¡é¢ä¿ã§ãï¼è¨ãã¾ã§ãããã¾ããããããªãã¢ã©ã«ãã¶ã¼ããåæã¨ããè¨ç®ã§ãï¼ã
yz1ã¯ãããåçã«ãªãã¾ãããã ãã大åæã¨ãã¦xã¯yãã大ãããªããã°ãªãã¾ãããyãxãã大ããã¨ããããèä½æ¨©ç®¡çå£ä½ã¯å£²å½å¥´ãã®ãã®ã§ããããã¯æç«ãã¦ããã®ã§ãããã?
ä¸è¨ãã©ã³ã¶ã¯ã·ã§ã³ã«ãããã³ã¹ããããå·®çãå°ããå ´åããã¯ãèä½æ¨©å£ä½ã¯å£²å½å¥´ã¨ãããã¨ã«ãªãã¾ããã¤ã¾ãã以ä¸ã®å¼ã絶対ã«0ããã大ãããªããã°ãªãã¾ããã
(x - y) - xz2 + yz1
ãã¦ã以ä¸ã®å¤ãæ大åããã«ã¯ã
- xãæ大åãã¹ãã§ãã
- z2ãæå°åã§ãã
- z1ãæ大åãã¹ãã§ãã
ã¨ãããã¨ã«ãªãã¾ãã
ããã¦ãããã¯èä½æ¨©å£ä½ã®ä¸»å¼µã§ããã¨ãããã¨ãæãåºãã¦ä¸ãããèä½è ã®ç«å ´ã§èããã°ãz1ãæ大åãããªã©ã¨ãã§ããªãã¨ãã話ã«ãªãã¾ããçã«èä½è ã®å©çã代å¼ããç«å ´ã§ããã°ã主張ãã¹ãã¯
- xã®æ大å
- z2ã®æå°å
ã«ãªãã¯ãã§ããããã¯ããããäºé建ã¦å¶åº¦*1ã®ç®æãã¨ããã«è¿ãã§ãã
ãã¦ãä¿è·æéã®å»¶é·ã¯ãxã®å¢å¤§ã«ç¹ãããã¨ã«ãªãã§ãããã? 常èçãªèä½è ã§ããã°ãèªåãæ»ãã§ãã70å¹´å¾ã®ãã¨ãªãã¦ãã©ãã§ãããã¨èãã¾ããã¸ã§ã³ã»ã¡ã¤ãã¼ãã»ã±ã¤ã³ãºããé·æçã«è¦ãã°ãããããã¯çæ»ãã§ããã®ã ãã¨è¨ã£ã¦ãã¾ããä¿è·æéã®å»¶é·ãªãã¦ãèä½è ã®æ¨©å©å¼·åã«ã¯å ¨ãç¹ãããªããã§ããã
ããã§ãç¾å¨ä¿è·æéã延é·ããããã¨ã§å®éã«ãã¤ã®èä½æ¨©ãå½±é¿ãåããã®ããèãã¦ã¿ã¦ä¸ãããç¾å¨ã®èä½è ã®æ¨©å©ã§ã¯ããã¾ãããæ¢ã«æ»äº¡ãã¦ããããèä½æ¨©ãåãããã ã¨ãã1950年代ã§ããã¨ãããã¨ã¯ãå¹³åçã«èãã¦20ä¸ç´åé ã太平æ´æ¦äºç´å¾ãããã®æ¥æ¬ãç¥è²¡å¤§å½ã§ãªãã¨ããããèä½æ¨©å£ä½ã¯ããã売å½å¥´ãªã®ã§ãã
ãã©ã³ã¶ã¯ã·ã§ã³ã«ãããã³ã¹ãã¯ã誰ãè² æ ããããã¦èª°ãåçãããã¨ã«ãªãã®ããèãã¦ã¿ãæ¹ãè¯ãã§ãããã
ããããæå³ã§ã¯ãèä½æ¨©ç®¡çæ©æ§ã¯ãå½å®¶ãè¨ç«ããè¡æ¿æ©é¢ããããã¯éå¶å©æ³äººã§ãããã¨ãè¦ä»¶ã¨ãããããã®å¶åº¦æ¹æ£ãããæ¹ãè¯ãã®ã§ãããã?ï¼JASRACå½å¶åè«?ï¼ ãããæ¯ã¨ããããã«ã¯ãå½è©²æ©æ§ããèªãã®æ¨©çæ¡å¤§ã®ããã«ã¯åããªããã¨ããä»®å®ãæç«ããªããã°ãªããªãã¨ããã®ãããã¯ã«ãªã£ã¦ãã¾ããã¤ã¾ããèä½æ¨©ç®¡çã·ã¹ãã ã¨ãããã®ã¯ãèªãã®è¦æ¨¡ã«ã¤ãã¦ä¾¡å¤ä¸ç«çã§ãªããã°ãªããªãã®ã§ãã
以ä¸ã¯ãèä½æ¨©å¶åº¦ãæåã®çºå±ã®ããã«åå¨ããã¨ããç¹ã度å¤è¦ãã¦ãçµæ¸çãªé¢ã§èãã話ã§ãã
ã¡ãªã¿ã«
ãã¾ããæ¥æ¬ã«ããã¦ã¯ã第äºæ¬¡å¤§æ¦ä¸ã«æ¥æ¬ãé£åå½å´ã®èä½æ¨©ãä¿è·ãã¦ããªãã£ãã¨ããçç±ãããé£åå½å´ã®èä½ç©ã«ã¤ãã¦ç´10å¹´éã®ä¿è·æéãå ç®ãããæ¦æå ç®ãã®å¶åº¦ããããåè°ä¼ã§ã¯ãããããæ¦æå ç®å¶åº¦ã¯æ¥µãã¦ä¸é©åãªæªç½®ã§ãããå»æ¢ãæ±ãã¦ããã¨ãã¦ããã®ããã«ãèä½æ¨©ã®ä¿è·æéã欧米ã¨åæ§ã®æ»å¾70å¹´ã«æããå¿ è¦æ§ãããã¨ããã
ã¡ã£ã¨ããããªå¿ è¦æ§ã¯ãªãã§ãããããããé·ãããèä½æ¨©ã®ä¿è·æéãç縮ãããã¨ã«ãªãã§ããããããã®æã«ãéç¨ããæ段ã¨ãã¦ãçµéæªç½®ããããã¨ãã§ãã¾ããæ¬å½ã«å¿ è¦ã»é©åãªã®ã§ãªããã°ãçµéæªç½®ãç½®ãã¹ãã§ã¯ããã¾ãããã
ã¨ãããããæåã«æ¸ããã¨ãããç· åã9/28ã ãããªã®ã§ã以ä¸ã®ãããªè©±ããã¼ã¹ã«æãã¦ã¿ããããªã¨æãã¾ããããã©ãããã£ãããã®ã¨ã³ããªã®ã³ããã§ããããããããæã£ã¦ããããã¦ãé·ã ã¨æ¸ãã¾ãããããã¤ã³ãã¯ãä»ä¿è·æéã延é·ãã¦ããæååæã®æ¥æ¬ãªãã¦ç¥è²¡å¤§å½ãããªãããæå³ãªãããã¨ããã¨ããã ã¨æãã¾ãã
*1:æè¿ã¯ä½ãããããªæèãè¦ãããããªã®ã§ãããã§ã¯ã¨ããããçç´å¥ããã®ãªãªã¸ãã«ã®ãã¨ã¨ãã¾ããã