Jaehyeok Kim*⋅Ha-Hyun Jo**

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Ⅰ

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Ⅱ

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_{ } ^

 



^

  



_{ } 

 

_{ }

 

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 

^



 ∞

∞

_{ }

  



 

^ 



 ∞



 

_{ } ^^  

 

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Ⅲ

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  ≥ ^

      

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_ _ __{  } ⋯  __{  } __{  } ⋯  __{  } _

_ _ __{  } ⋯  __{  } __{  } ⋯  __{  } _



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

  

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Ⅴ

_^ _′  _

_



^{ if } ^^ ^{ }

_

_

_

_

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Pr _   Pr_  _^′ 

    _^′ 

_′    _  _ _ _ _

 _ _ _ _

(23)

(24)

log



^^{ }  

 _ 



^{ }^

 _

 _ 

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Ⅵ

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Jaehyeok Kim^*⋅Ha-Hyun Jo^**