In this work we consider the following primitive, that we call restricted adaptive oblivious transfer. On the one hand, the owner of a database wants to restrict the access of users to this data according to some policy, in such a way that a user can only obtain information satisfying the restrictions imposed by the owner. On the other hand, a legitimate user wants to privately retrieve allowed...

PURPOSE Describe small business support for youth physical activity opportunities (YPAO) and identify factors associated with this support. DESIGN Cross-sectional analysis of quantitative data relating business characteristics and support for YPAO. SETTING Eight demographically heterogeneous, urban neighborhoods in a Midwest metropolitan area. SUBJECTS Adult small business owners (n = 90;...

Stress responses within dyads are modulated by interactions such as mutual emotional support and conflict. We investigated dyadic psychobiological factors influencing intra-individual cortisol variability in response to different challenging situations by testing 132 owners and their dogs in a laboratory setting. Salivary cortisol was measured and questionnaires were used to assess owner and do...

In one proposed use of digital watermarks, the owner of a document D sells slightly different documents, D, D, . . . to each buyer; if a buyer posts his/her document D to the web, the owner can identify the source of the leak. More general attacks are however possible in which k buyers create some composite document D∗; the goal of the owner is to identify at least one of the conspirators. We s...

Human-cat dyads may be similar in interaction structure to human dyads because many humans regard their cats as being social companions. Consequently, we predict that dyadic structure will be contingent on owner and cat personalities, sex, and age as well as duration of cohabitation of the partners. Forty owner-cat dyads were visited in their homes, on four occasions, during which their behavio...

1. The house of a suspect in a murder inquiry is searched. In a locked room, and a locked chest within that room, a bloodied knife is found that has the DNA of a murder victim on its blade. The room and the chest were securely locked, the owner of the house being the only one with a key that he never left out of his sight. There is no sign that either lock was tampered with, or that anyone othe...

Due to improvement in imaging technology and the ease with which digital content can be reproduced and manipulated there is a strong need for a digital copyright mechanism to be put in place. There is a need for authentication of the content as well as the owner. It has become easier for malicious parties to make scalable copies of copyrighted content with any compensation to the content owner....

Irrigated agriculture is dependent on an adequate water supply of usable quality. Water used for irrigation can vary greatly in quality depending upon type and quality of dissolved salts. Salts are present in irrigation water in relatively small but significant amounts. The problems that result very both and kind, degree and modified by soil, climate and crop. The aim this paper is to monitor t...