During the development, testing, and use of System/360, difficulties and problems were logged, but few received the attention given to the Direct Access Storage Device (DASD). This was not necessarily because DASD attachment and use had greater inefficiencies or design problems than other devices. With System/360, DASD attained a prominence it never had before, since no previous system was as ...

When we have knowledge of the positions of nearby walls and buildings, estimating the source location becomes a very efficient way of characterizing and estimating a radio channel. We consider localization performance with and without this knowledge. We treat the multipath channel as a set of ‘virtual receivers’ whose positions can be pre-stored in a channel database. Using wall knowledge, we d...

This paper builds a game-theoretic model to examine the impact of the Internet shopping infomediary on the competition between the product or service supplier’s direct online channel and the independent online multibrand retailer. It is found that by facilitating cross-channel competition, the infomediary may even help the supplier to place its brand on the retailer’s shelf. The main insight is...