With a laboratory experiment, we study the impact of buy-options and the corresponding buy-price on revenues and bidding behavior in (online) proxy-auctions with independent private valuations.We show that temporary buy-options may reduce revenues for two reasons: At Headwear low buy-prices, the application of the buy-option avoids revenue-enhancin

Traditional Chinese martial arts have a long history.In terms of cultural Cornici positioning, traditional martial arts have two main functions, namely, to promote patriotism and to provide opportunities for commercial exploitation.These are primarily reflected in the combat style and the expressive nature of traditional martial arts.In addition, m

ntroduction: Many people suffer from vertigo.Its origin in 85% of cases is otological while in 15% is central etiology.Benign paroxysmal positional vertigo (BPPV) is the most common cause of the true vertigo.In this research we evaluated the risk factors of acute attack of BPPV.Materials and Methods: This Skin Care study was performed on 322 patien