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梦晶儿

新虫 (初入文坛)

[求助] 请问有用AQUASIM软件做模拟的么?~

各位好,我们在用aquasim实现ADM1中的parameter estimation一步中,遇到了问题,希望得到大家的帮助。
软件提示problem during parameter estimation (see log file for details)
log file 里是这样的,
Parameter estimation
--------------------

   Number of parameters:                              14
   Number of data points:                             17

   06/25/2011 22:44:43  Start of calculation
   06/25/2011 22:44:43  Chi^2 = 45.2345
   06/25/2011 22:44:43  Chi^2 = 45.2262
   06/25/2011 22:44:43  Chi^2 = 45.1909
   06/25/2011 22:44:43  Chi^2 = 45.2295
   06/25/2011 22:44:43  Chi^2 = 45.2345
   06/25/2011 22:44:43  Chi^2 = 45.2342
   DASSL--  AT CURRENT T = 178.286 1000 STEPS
   DASSL--  TAKEN ON THIS CALL BEFORE REACHING TOUT.
   Integration problem for calculation number 0
   06/25/2011 22:44:45  Chi^2 = 45.2345
   06/25/2011 22:44:45  Chi^2 = 45.2345
   *** Solution not enough sensitive to this parameter
   06/25/2011 22:44:45  Chi^2 = 45.2345
   06/25/2011 22:44:45  Chi^2 = 45.2345
   06/25/2011 22:44:45  Chi^2 = 45.2345
   *** Solution not enough sensitive to this parameter
   06/25/2011 22:44:45  Chi^2 = 45.2345
   06/25/2011 22:44:45  Chi^2 = 45.2345
   06/25/2011 22:44:45  Chi^2 = 45.2345
   *** Solution not enough sensitive to this parameter
   06/25/2011 22:44:45  Chi^2 = 45.2345
   06/25/2011 22:44:45  Chi^2 = 45.2345
   06/25/2011 22:44:45  Chi^2 = 45.2345
   *** Solution not enough sensitive to this parameter
   06/25/2011 22:44:45  Chi^2 = 45.2318
   06/25/2011 22:44:45  Chi^2 = 45.2345
   06/25/2011 22:44:45  Chi^2 = 45.2345
   06/25/2011 22:44:45  Chi^2 = 45.2345
   *** Solution not enough sensitive to this parameter
   06/25/2011 22:44:45  Chi^2 = 45.2345
   06/25/2011 22:44:45  Chi^2 = 45.2345
   06/25/2011 22:44:45  Chi^2 = 45.2345
   *** Solution not enough sensitive to this parameter
   06/25/2011 22:44:45  Chi^2 = 45.2345
   06/25/2011 22:44:45  Chi^2 = 45.2345
   06/25/2011 22:44:45  Chi^2 = 45.2345
   *** Solution not enough sensitive to this parameter
   06/25/2011 22:44:45  Chi^2 = 45.2345
   06/25/2011 22:44:45  Chi^2 = 45.2345
   06/25/2011 22:44:45  Chi^2 = 45.2345
   *** Solution not enough sensitive to this parameter
   06/25/2011 22:44:45  Chi^2 = 45.237
   *** Solution not enough sensitive to some parameter(s)
   06/25/2011 22:44:45  End of calculation

   *** Calculation stopped due to numerical problems ***
现在不知道该从哪里入手呢,有谁知道解决办法么。。谢谢了。。
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