Consider a gambling game in which we are allowed to repeatedly bet a portion of our bankroll at favorable odds. We investigate the question of how to minimize the expected number of rounds needed to increase our bankroll to a given target amount. Specifically, we disprove a 50-year old conjecture of L. Breiman [1], that there exists a threshold strategy that optimizes the expected number of rou...

in this paper, the security of a distance bounding protocol is analyzed which has been recently proposed by jannati and falahati (so-called jf). we prove that an adversary can recover key bits of jf protocol with probability of “1” while the complexity of attack is “2n” runs of protocol. in addition, we propose an improved protocol and prove that the improved protocol is resistant to mafia frau...

Since the Middle Ages the Jews have been engaged primarily in urban, skilled occupations, such as crafts, trade, Þnance, and medicine. This distinctive occupational selection occurred between the seventh and the ninth centuries in the Muslim Empire and then it spread to other locations. We argue that this transition was the outcome of the widespread literacy among Jews prompted by an educationa...

The current mechanism for providing affordable housing through the planning system in England is based on negotiation within the framework of Planning Policy Guidance Note 3 and Circular 6/98. In this paper the authors examine three groups of questions. First, on the development of the policy, they look at how the need for affordable housing is assessed, how the policy evolved, and how it is cu...

Distance Bounding (DB) is designed to mitigate relay attacks. This paper provides a complete study of the DB protocol of Kleber et al. based on Physical Unclonable Functions (PUFs). We contradict the claim that it resists to Terrorist Fraud (TF). We propose some slight modifications to increase the security of the protocol and formally prove TF-resistance, as well as resistance to Distance Frau...

Social influence has been shown to profoundly affect human behavior in general and technology adoption (TA) in particular. Over time, multiple definitions and measures of social influence have been introduced to the field of TA research, contributing to an increasingly fragmented landscape of constructs that challenges the conceptual integrity of the field. In this vein, this paper sets out to ...

Gemmell and Naor proposed a new protocol for unconditionally secure authentication of long messages. However Gehrmann showed that the proof of the security of the protocol was incorrect. Here we generalize the multiround protocol model. We prove the security of a 3-round protocol and give for this case a new easy implementable construction which has a key size close to the fundamental lower bou...

Study of all reported instances of motion of Martian yellow clouds yields a n analysis of thcir probable nature and properties. The yellow clouds seem to be initiated by wind-driven sand and teiid to form in low latitudes. The limb and terminator projections seem to be quite diffcreiit in nature, probably in par t aqucous condensations. Thcse occur primarily in middle latitudes.