this paper considers the possibility of spontaneous transition of aracemic mixture (composed of equal amounts of two enantiomeric species, say l and d) into a monochiral state (in which only one enantiomer, say l, is present). transitions of this kind have been recently experimentally observed. a plausible approach to this phenomenon is a model put forward by frank, based on simple laws of chem...

The saturation assumption is widely used in computational science and engineering, usually without any rigorous theoretical justification and even despite of counterexamples for some coarse meshes known in the mathematical literature. On the other hand, there is overwhelming numerical evidence at least in an asymptotic regime for the validity of the saturation. In the generalized form, the assu...

This property can be exploited (see [Boy90] or [SG92] for other instances) to flaw the Needham-Schroeder symmetric key authentication protocol [NS78]. This protocol intends to permit Alice to establish a shared secret key Kab with Bob and to obtain mutual conviction of the possession of the key by each other. The key is provided by a trusted server S who shares the secret keys Kas and Kbs with ...

Planning for partially observable, nondeterministic domains is a very significant and computationally hard problem. Often, reasonable assumptions can be drawn over expected/nominal dynamics of the domain; using them to constrain the search may lead to dramatically improve the efficiency in plan generation. In turn, the execution of assumption-based plans must be monitored to prevent runtime fai...

Contemporary social theory has consistently emphasized habitual action, rule-following, and role-performing as key aspects of life, yet the challenge remains combining these with omnipresent phenomenon self-reflective conduct. This article attempts to tackle this by proposing useful distinctions that can facilitate further interdisciplinary research on self-reflection. To end, I argue we need a...

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