Patent ID: 11892440
Assignee: RUBBER RESEARCH INSTITUTE, CHINESE ACADEMY OF TROPICAL AGRICULTURAL SCIENCES
Field: Measurement (Instruments)
Classification: CPC G  Y | IPC G

Claim 1:
2. The method for evaluating according to claim 1, wherein a membership function formula is Uij=(Xij−Xjmin)/(Xjmax−Xjmin); wherein an inverse function is used for conversion, if the physiological indexes of the cold tolerance are negatively related to the cold tolerance; an inverse function value=1−(Xij−Xjmin)/(Xjmax−Xjmin); and the comprehensive indexes of the cold tolerance:, Ui
   =
   
    
     ∑
     
      j
      =
      1
     
     n
    
    
     Uij
     /
     n
    
   
  
  ,, wherein i is an i-th material of all the materials to be tested, j is a j-th physiological index of the cold tolerance of all measured indexes, Xij is a measured value of a j-th index of the i-th material, Xjmin and Xjmax are a minimum measured value and a maximum measured value of j-th indexes of all the materials to be tested respectively, Ui is a comprehensive index of the cold tolerance of the i-th material, and n is a number of the physiological indexes of the cold tolerance measured.