El peligro yankee

Sam Harvey Yankee Surgeon—Philosopher

1 Bidding Strategies in Internet Yankee Auctions

A bidding strategy commonly observed in Internet auctions, though not frequently in live auctions, is that of “jump-bidding,” or entering a bid larger than necessary to be a current high bidder. In this paper, we argue that the cost associated with entering on-line bids and the uncertainty concerning bidding competition -both of which distinguish Internet from live auctions -can explain this ph...

Replicating Online Yankee Auctions to Analyze Auctioneers' and Bidders' Strategies

Dynamic price setting mechanisms such as online auctions typify the new generation of mercantile processes being used on the WWW. However, arbitrary pricing mechanisms can result in loss of revenue and social capital in markets characterized by tight margins. This work presents a relatively risk-free and cost-effective approach to managing innovation in the area of web-based dynamic price setti...

Simulating Online Yankee Auctions to Optimize Sellers Revenue

The online Yankee auction sells multiple units of the same good to multiple buyers using an ascending and open auction mechanism. One of the important controllable factors of the Yankee auction is the minimum bid increment, specified at the beginning of an auction. Bidders can bid only in the multiples of this bid increment even if they are willing to bid higher than the minimum required bid. T...

Field notes on findings of threatened amphibian species in the central mountain range of western Panama

—During field work along a transect in the Cordillera Central of western Panama between 2008 and 2010, we detected several populations of amphibian species which are considered as “Endangered” or “Critically Endangered” by the IUCN. Some of these species had suffered from serious population declines, probably due to chytridiomycosis, but all are generally threatened by habitat loss. We detected...