發送短信

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 _    _     _____    _    _    _    _     _____   
| |  | ||  |  ___|| | || | || | || | ||  |__  //  
| |/\| ||  | ||__   | || | || | || | ||    / //   
|  /\  ||  | ||__   | \\_/ || | \\_/ ||   / //__  
|_// \_||  |_____||  \____//   \____//   /_____|| 
`-`   `-`  `-----`    `---`     `---`    `-----`

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發送短信 : A New Efficient Approximation for Concentration Parameter of Circular Data