We consider a budget-constrained mechanism designer who selects an optimal set of projects to maximize her utility. A project's cost is private information and its value for the designer may vary. In this allocation problem, the selection of projects - both which and how many - is endogenously...

Blockchain technology is firmly established in the public awareness as a revolutionary new technology underpinning cryptocurrency. However, its potential applications can be found across sectors and industries in providing a novel way of producing coordination necessary to transact online,...

The most popular virtual currency (bitcoin) has become so popular because it relies on the concept of Distributed Ledger, realized by means of a technology known as BlockChain. This technology removes the need for third parties (such as authorities) that authorize transactions; in fact, it is a...

Electronic commerce in B2C area is developing rapidly in Europe in last decade and it became respective proportion in retail revenue generation in all EU countries. More than a half of population in EU are online shoppers. Books are important product category. On the other hand, consumer...