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  ______     ___      _____     _____     _  _   
 /_____//   / _ \\   |__  //   |  ___||  | \| || 
 `____ `   | / \ ||    / //    | ||__    |  ' || 
 /___//    | \_/ ||   / //__   | ||__    | .  || 
 `__ `      \___//   /_____||  |_____||  |_|\_|| 
 /_//       `---`    `-----`   `-----`   `-` -`  
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發送短信 : Parameter identification of large structural systems in time domain