In this paper we extend dynamic controllability of temporally-flexible plans to temporally-flexible reactive programs. We consider three reactive programming language constructs whose behavior depends on runtime observations; conditional execution, iteration, and exception handling. Temporally-flexible reactive programs are distinguished from temporally-flexible plans in that program execution ...

OBJECTIVE To assess body size stigmatization attitudes (BSSA), their effect on friendship selection, and controllability beliefs in a sample of African American preschool-age children of low socioeconomic status. METHODS Participants included 76 children attending Head Start. Children completed an adjective task, a friendship selection task, and a controllability task. RESULTS On the adject...

Traditional information security models focus on protecting information or information systems. There is little research on controllability of Internet information security. We present network reference monitor (NRM) for access control in Internet environment. Then we propose the defi nition of network reference monitor and Internet information access control. Abstract operation model is put fo...

We study the exact controllability of two systems by means of a common finitedimensional input function, a property called simultaneous exact controllability. Most of the time we consider one system to be infinite-dimensional and the other finite-dimensional. In this case we show that if both systems are exactly controllable in time T0 and the generators have no common eigenvalues, then they ar...

Keywords: Relative controllability Time delays Distributed delays Fractional derivative Mittag–Leffler function a b s t r a c t This paper is concerned with the controllability of nonlinear fractional dynamical systems with time varying multiple delays and distributed delays in control defined in finite dimensional spaces. Sufficient conditions for controllability results are obtained using the...