The research on off-line electronic cash(e-cash) schemes has drawn much attention since Chaum etc [8] presented the first off-line anonymous electronic cash scheme in 1988. However, anonymous electronic cash schemes also facilitate fraud and criminal activities [32], such as money laundering, blackmailing and illegal purchases. Frankel etc [13]. first introduces the concept of fair electronic c...

The spatial distribution of protons, accelerated by intense femtosecond laser pulses interacting with thin target foils under oblique irradiation are investigated. Under certain conditions, the proton beams are directed away from the target normal. This deviation is towards the laser forward direction, with an angle that increases with the level and duration of the amplified spontaneous emissio...

The uniform-price auction is used in many regional electricity procurement auctions and its “collusive-seeming equilibria” have been linked to potential exercise of market power. Such equilibria do not exist, however, if a small amount of cash is split among rationed bidders. To shed light on what drives this result, I also examine variations in which the auctioneer is able to increase and/or d...

This paper empirically examines whether additional future fixed capital and R&D investment expenditures induce firms to accumulate cash reserves while considering the role of market imperfections. Implementing a dynamic framework on a panel of US, UK and German companies, we find that firms make larger additions to cash holdings when they plan additional future R&D rather than fixed capital inv...

The environment is the source of many discussions in America’s board rooms. Most of the conversations probably center around cost containment, dealing with new regulations or reacting to unexpected problems. Some conversations may even revolve around how to “cash in” on the public’s concern for the environment. All of these discussions are normal, but also are increasingly becoming outdated. Co...

Cash crop expansion has been a major land use change in tropical and subtropical regions worldwide. Quantifying the determinants of cash crop expansion should provide deeper spatial insights into the dynamics and ecological consequences of cash crop expansion. This paper investigated the process of cash crop expansion in Hangzhou region (China) from 1985 to 2009 using remotely sensed data. The ...

This study examines the pre-announcement performance of Canadian takeover targets and measures the relation between performance and the turnover rate of target firm top managers (Chief Executive Officers or Presidents) following the announcements. We find negative correlation between pre-announcement performance and the turnover rate. We find that the pre-announcement performance of targets tha...