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Çѱ¹¼öÀÚ¿øÇÐȸ / v.34, no.4, 2001³â, pp.357-364
ºÎ¿© Ãë¼öÀåÀÇ $NH_3-N$ÀÚ·á¿¡ ´ëÇÑ Æò±Õ ¹× ºÐ»êÃßÁ¤
( Estimation of Mean and Variance for $NH_3-N$ data of Puyeo Intake )
±èÇü¼ö;Á¤°ÇÈñ;±èÀÀ¼®;±èÁßÈÆ; ¼±¹®´ëÇб³ Åä¸ñ°øÇаú;°í·Á´ëÇб³ Åä¸ñȯ°æ°øÇаú;°í·Á´ëÇб³ Åä¸ñȯ°æ°øÇаú;;
 
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½ÇÇè ¶Ç´Â °èÃø¿¡ ÀÇÇØ °üÃøµÈ °üÃøÄ¡µéÀº Á¾Á¾ ¾î¶² ±âÁØÄ¡ ÀÌÇÏÀÇ ÀÛÀº °ªµéÀÌ ±â·ÏµÇ´Âµ¥, ÀÌµé ±âÁØÄ¡ ÀÌÇÏÀÇ °ªµéÀÌ Å©±â´Â ¹Ì¼ÒÇÒÁö¶óµµ Æò±ÕÀ̳ª ºÐ»ê ÃßÁ¤½Ã ¿Ö°îµÈ °á°ú¸¦ ÁÙ ¼ö ÀÖ´Ù. ±×·¯³ª ¿ì¸® ³ª¶ó¿¡¼­´Â °üÃø¿ÀÂ÷·Î °£ÁÖÇÏ¿© N.D.(Not Detected)·Î ó¸®ÇÏ´Â °ÍÀ» °ü·Ê·Î Çϰí ÀÖ¾î ¹Ì¼ÒÄ¡µéÀÌ ±â·ÏµÇÁö ¾Ê°í ÀÖ´Ù. EK¶ó¼­ º» ¿¬±¸¿¡¼­´Â ºÎ¿© Ãë¼öÀåÀÇ ¾Ï¸ð´Ï¾Æ¼º Áú¼Ò(NH$_3$-N)ÀÚ·á°¡ Å©±â¿¡ µû¶ó ºÐÇ¥ÇüÀÌ ´Ù¸§À» Á¶»çÇÏ°í ±× ºÐÆ÷¸¦ ±¸º°ÇÒ ¼ö ÀÖ´Â ±âÁØÄ¡¿Í ±âÁØÄ¡ ÀÌÇÏÀÇ ÀÚ·áµé¿¡ ´ëÇÑ Æò±Õ°ú ºÐ»ê ÃßÁ¤½Ã °¡Àå ÀûÀýÇÑ ±â¹ýÀ» ã°íÀÚ ÇÏ¿´´Ù. Áï, ±âÁØÄ¡ ÀÌÇÏÀÇ °ªµé°ú ÀÌ»óÀÇ °ªµéÀ» ±¸ºÐÇÏ¿© Æò±Õ°ú ºÐ»êÀ» À§ÇÑ ÀûÀýÇÑ ±â¹ýÀ» ¼±Á¤ÇÏ¿© ÃßÁ¤ÇÏ¿´´Ù. ºÐ¼® °á°ú ºÎ¿©Ãë»çÀåÀÇ ÀÚ·á´Â Æí±â ¼öÁ¤µÈ ÃÖ¿ìµµ(Bias Corrected ML)¹ýÀÌ °¡Àå ÀûÇÕÇÑ °ÍÀ¸·Î °áÁ¤µÇ¾úÀ¸¸ç, ½ÃÇàÂø¿À¹ý¿¡ ÀÇÇÏ¿© ±âÁØÄ¡¸¦ ¼³Á¤ÇÏ¿´´Ù.
Sometimes the observed data is too small to discriminate it from noise of the instrument. Say, the data can be recorded as below DL(Detection Level) value. Even though the data below Detection Level(BDL) is small vague, it can be resulted in wrong estimates for mean and variance. However, in practice, the BDL data is generally eliminated as N.D. (Not Detected) and do not record it in Korea. This study investigates the distributions according to the data values of ammonia concentration (NH$_3$-N) in Puyeo intake. Also we try to find out DL value and an appropriate method for the estimations of mean and variance of BDL values that can be discriminate the distributions. The DL is estimated by trial and error method. The appropriate method for the estimations of mean and variance of above the detection level(ADL)and BDL dada sets is selected, and the mean and variance are estimated. As a result, it is found that the Bias Corrected Maximum Likelihood Estimator is the most accurate method for NH$_3$-N in Puyeo intake.
 
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.34, no.4, 2001³â, pp.357-364
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200111920731587)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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ȸ»ç¼Ò°³ ±¤°í¾È³» ÀÌ¿ë¾à°ü °³ÀÎÁ¤º¸Ãë±Þ¹æÄ§ Ã¥ÀÓÀÇ ÇѰè¿Í ¹ýÀû°íÁö À̸ÞÀÏÁÖ¼Ò ¹«´Ü¼öÁý °ÅºÎ °í°´¼¾ÅÍ
   

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