Cataract is a very common eye disease and the most significant cause of blindness.In consideration of its burden on society,the focus was put on testing the ris
The bullwhip effect is widely found in business and exerts adverse effects on business activities.To investigate the influence of the bullwhip effect on firms'p
In a credence goods market,a consumer(he)is unaware of his true need,which can be either intense or minor.An expert(she)designs a menu that either charges a uni