          
         
                
           
               
             
            
             
             
             
                 
                 
        
               
              
              
               
            
            
               
           
                  
         
                 
                
   
           () 
                   
  
            ()  
          () 
            
            ( )      
     
         ()    
               
             
       ( )        
                 
       
                      
      
                  
            
                    
     ()                
   
                  
     ()                
 
     ()                
          
     ()                  
  
                 
       
             
                  
                  
                  
                 
                 
                 
           )  
              (   
             ()     
 
             
               
              
                
            
             
                   

     
                     

     1996   4  16  

             
             
                
   
                   
                   
   
                 
          (1996) 32         

                 