In this paper, we propose solution for obtaining mutual nonrepudiation between the user and service provider in cloud storage. One of the solutions for mutual nonrepudiation is based on logging attestations, which are signed messages. For supporting write-serializability and read freshness of files, an intuitive solution is to have attestations be chain hashed. However, it is inefficient when f...

Learning in a multiagent environment is complicated by the fact that as other agents learn, the environment effectively changes. Moreover, other agents’ actions are often not directly observable, and the actions taken by the learning agent can strongly bias which range of behaviors are encountered. We define the concept of a conjectural equilibrium, where all agents’ expectations m-e realized, ...

A convicted criminal suffers not only from public penalties, but from stigma, the reluctance of others to interact with him economically and socially. Conviction can convey useful information about a person, which makes stigmatization an important and legitimate function of the criminal justice system, quite apart from moral considerations. Whether stigma will operate in this way depends on exp...

This research examined whether self-fulfilling prophecy effects accumulated, dissipated, or remained stable over time in terms of 2 complementary conceptual models. Analyses of longitudinal data from 2 samples of mother-child dyads (N(1) = 487; N(2) = 288) yielded 3 main findings. First, the degree to which mothers' inaccurate beliefs assessed at a single point in time predicted children's dist...