Abstract. We prove that uniform and semi-uniform families of P systems with active membranes using only communication and nonelementary division rules are not computationally unive...
Antonio E. Porreca, Alberto Leporati, Claudio Zand...
Abstract. A direct universal extended H system receives as input the coding of an extended H system with double splicing and simulates it. It is the first time that a direct constr...
This work presents a formal description of a subset of a C-like language in the form of an operational semantics. We give semantics to the following statements (presented in alpha...
Abstract. We introduce generalized trajectories where the individual symbols are interpreted as operations performed on the operand words. The various previously considered traject...
Michael Domaratzki, Grzegorz Rozenberg, Kai Saloma...
Abstract. We present fully polynomial approximation schemes for the problem of minimizing completion time variance of a set of n jobs on a single machine. The fastest of these sche...
Wieslaw Kubiak, Jinliang Cheng, Mikhail Y. Kovalyo...