This paper proposes a new model of P systems where the rules are activated by objects present in the neighboring regions. We obtain the computational completeness considering only two membranes, external inhibitors and carriers. Leaving the carriers apart we obtain equality with ET0L systems in terms of number sets.

A membrane system (P system) is a model of computation inspired by some basic features of the structure and behaviour of living cells. In this paper we consider systems with string-objects processed by rewriting, with the communication controlled by conditions on the contents of the strings. Symbols, substrings (in an arbitrary place, or as a prefix/suffix), or the shape of the whole string are...

The feature of conditional communication in membrane computing has been introduced in symbol objects and arrays in [1, 8, 9, 19]. Hybridity and context free is a special feature which has been applied on Hybrid P system [17]. In this paper we study the nature of membrane computing with conditional communication in Hybrid context free puzzle P system and examine the power of the system by compar...

Membrane computing is a (biologically motivated) theoretical framework of distributed parallel computing. If symbol-objects are considered, then membrane systems (also called P systems) are distributed multiset processing systems. In evolutioncommunication (EC) P systems the computation is carried out with the use of noncooperative rewriting rules and with (usually the minimally cooperative) tr...

background : managers’ communication skills are one of the most important topics in educational sector of universities of medical sciences and may have considerable effect on faculty members and employees. this study was performed to determine the level of communication skills (verbal, listening, feedback) of the heads of department of faculties and its relation with some demographic variables....

introduction nurse-patient communication is highly important especially when the patient is a child. one thing that has been overlooked in the nursing profession or less discussed is how to communicate with children. design and training courses for the development of communication skills is considered as an important step in this direction. this study investigated the effect of training communi...

background: well-designed interventions can improve the communication skills of physicians. since the understanding of the current situation is essential for designing effective interventions, this study was performed to determine medical interns’ confidence and use of communication skills. m aterials and methods: this descriptive-analytical study was performed in spring 2013 within 3 branches ...