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| || | ||   / _ \\   | \| ||   / _ \\   | |/ // 
| '--' ||  | / \ ||  |  ' ||  / //\ \\  | ' //  
| .--. ||  | \_/ ||  | .  || |  ___  || | . \\  
|_|| |_||   \___//   |_|\_|| |_||  |_|| |_|\_\\ 
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Text this: Analysis of global competitiveness using copula-based stochastic frontier kink model