Recently, Peyravin and Jeffries proposed a password-based practical authentication scheme using oneway collision-resistant hash functions. However, Shim and Munilla independently showed that the scheme is vulnerable to off-line guessing attacks. Hölbl, Welzer and Brumenn presented an improved password-based protocols. In the paper, we showed that the improved scheme still suffers from off-line ...

We present a four-stage meta-heuristic for routing vehicles in an urban environment, with the goal of traversing every street. While the theoretical aspects of street traversal are well-studied, our algorithm is designed to accommodate several obstacles to practical street traversal that are known to be NP-hard, such as turning penalties, the usage of multiple vehicles, and the presence of onew...

The study purposed to examine the morphometry and morphology of crista galli in cone beam computed tomography (CBCT) apply a new analysis, supervised Machine Learning techniques find answers research questions “Can sex be determined with morphometric measurements?” or “How effective are measurements determining sex?”. Crista dimensions including anteroposterior, superoinferior, laterola...

We prove that boundedness and reachability tree niteness are undecidable for systems of two identical automata communicating via two perfect unbounded oneway FIFO channels and constructed solely from cycles about their initial states. Using a form of mutual exclusion for such systems, we prove further that undecidability holds even when the identical automata are totally indistinguishable in th...