We study the ensemble performance of biometric authentication systems, based on secret key generation, which work as follows. In the enrollment stage, an individual provides a biometric signal that is mapped into a secret key and a helper message, the former being prepared to become available to the system at a later time (for authentication), and the latter is stored in a public database. When...

Most studies of female choice have assumed that mating preferences are shared within a population or species. However, variation both within and among females exists in natural populations, and foraging history is among the many ways in which females may vary. Here, we used diet manipulations in an effort to understand how foraging history influences female mate choice. Immature Schizocosa wolf...

Self-employment is increasing among seniors. The percentage of individuals age 62 and over who were self-employed increased from 4.2 percent in 1988 to 5.4 percent in 2015. In contrast, the percentage of individuals under age 62 who were self-employed decreased from 7.2 percent in 1988 to 6.0 percent in 2015. This report explains the increase in self-employment among individuals age 62 and over...