Fundamental problem of cryptography is to create more absolutely secure bits than the initially shared secret bits between two legitimate users. It is widely believed that this task can only be accomplished by quantum cryptosystems. We present a simple classical cryptosystem, which can fulfill this objective.

This paper analyzes a model of learning by imitation, where besides the decision maker, there is a population of individuals facing the same decision problem. We analyze a property called Absolute Expediency, which requires that the decision maker’s expected payo¤ increases from one round to the next for every decision problem and every profile of realized actions taken by the population. We gi...

Different solution concepts (core, stable sets, largest consistent set, ...) can be defined using either a direct or an indirect dominance relation. Direct dominance implies indirect dominance, but not the reverse. Hence, the predicted outcomes when assuming myopic (direct) or farsighted (indirect) agents could be very different. In this paper, we characterize absolutely stable roommate problem...

Crustacean phenoloxidase (PO) and hemocyanin (Hc) are classified as type 3 copper proteins. PO catalyzes the oxidation of mono- di-phenol compounds, which is rate-limiting step melanization, while Hc generally functions a dioxygen-transporting protein in hemolymph arthropods. To date, many studies have shown activity Hc, inspired by their structural similarity. Here, source crustaceans was re-e...

Old women are expected to undergo pelvic organ prolapse (POP) surgery. Distress caused by POP affects women´s quality of life. Although polypropylene mesh (PM) is considered a good material restore the floor, there concerns about infection and vaginal exposure. This research studies optic properties inflammatory reaction tissue repair induced PM covered porcine collagen membrane (CM). Thirty fe...

For operators with homogeneous disorder, it is generally expected that there is a relation between the spectral characteristics of a random operator in the infinite setup and the distribution of the energy gaps in its finite volume versions, in corresponding energy ranges. Whereas pure point spectrum of the infinite operator goes along with Poisson level statistics, it is expected that purely a...