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Reduction to satisfiability of constrained Horn clauses (CHCs) is a widely studied approach automated program verification. Current CHC-based methods, however, do not work very well for pointer-manipulating programs, especially those with dynamic memory allocation. This article presents novel reduction Rust programs into CHCs, which clears away pointers and states by leveraging Rust’s guarantee...

Generalized Temporal Role Based Access Control (GTRBAC) model that captures an exhaustive set of temporal constraint needs for access control has recently been proposed. GTRBAC’s language constructs allow one to specify various temporal constraints on role, user-role assignments and role-permission assignments. In this paper, we present the notion of different types of role hierarchies based on...

with regard to human cloning or artificial human reproduction – and contrary to the opinions of sunni scholars - shiite thinkers have not held a unified position. after having surveyed a number of shiite fatwas and analyses on the subject, this essay will classify them into four groups. the first group states that we are granted absolute permission to engage in human cloning; while the second g...

On pages 2646 and 2467, the graphics of Figures 12 13 were swapped during typesetting. The correct are as follows: Potential free energies CO2 activation dissociation on (a) 3Ni/TiO2 (b) 3Ni/TiO2[Vo]. units bond length energy given in Å eV, respectively. Reprinted from ref. [71]; copyright 2017 Wiley-VCH. Top side views H* adsorption site surface Zn vacancy modified ZnS (VZn-ZnS); Free diagram ...