Parameterized Verification of Systems with Global Synchronization and Guards

Inspired by distributed applications that use consensus or other agreement protocols for global coordination, we define a new computational model for parameterized systems that is based on a general global synchronization primitive and allows for global transition guards. Our model generalizes many existing models in the literature, including broadcast protocols and guarded protocols. We show that reachability properties are decidable for systems without guards, and give sufficient conditions under which they remain decidable in the presence of guards. Furthermore, we investigate cutoffs for reachability properties and provide sufficient conditions for small cutoffs in a number of cases that are inspired by our target applications.Comment: Accepted at CAV 202

Promptness and Bounded Fairness in Concurrent and Parameterized Systems

We investigate the satisfaction of specifications in Prompt Linear Temporal Logic (Prompt-LTL) by concurrent systems. Prompt-LTL is an extension of LTL that allows to specify parametric bounds onthe satisfaction of eventualities, thus adding a quantitative aspect to the specification language. We establish a connection between bounded fairness, bounded stutter equivalence, and the satisfaction of Prompt-LTL\X formulas. Based on this connection, we prove the first cutoff results for different classes of systems with a parametric number of components and quantitative specifications, thereby identifying previously unknown decidable fragments of the parameterized model checking problem

Polysaccharide Containing Gels for Pharmaceutical Applications

WOS: 000456875000007Bio-derived polymers are falling into the needs of pharmaceutical formulations for topical applications due to their gelling ability. Generally, in topical delivery, as an alternative way for local and systemic application of active substances, formulations in gelling form are preferred as they have multiple advantages, e.g., minimize systemic side effects, avoid gastrointestinal irritation, prevent the metabolism of the active substance in liver, etc. The present chapter reviews bio-based polymers with special reference to polysaccharides-based hydrogels with respect to their pharmaceutical applications