I present my research concerning complexity of bisimilarity between BPP and other simple process rewrite systems, specifically BPA and finite-state systems. The results are based on some general notions introduced by Jančar in [1] where he has shown PSPACE-completeness of bisimilarity on BPP. Some of presented results are joint work with Zdeněk Sawa or my supervisor Petr Jančar.

Infectious vascular complications affecting transplant recipients may lead to severe morbidity and graft loss. This is a retrospective review of vascular repair with bovine pericardial patch (BPP) in infected fields for immunosuppressed patients. BPP was used as either a patch or an interposition graft. Five cases of arterial reconstruction in infected fields using BPP were performed. There wer...

Most studies of the cost-effectiveness of pneumococcal vaccination show very favorable cost-effectiveness ratios for preventing pneumococcal pneumonia, but they make the controversial assumption that vaccination is equally effective in preventing bacteremic (BPP) and nonbacteremic (NBPP) pneumonia. However, the results of our study showed that, compared with preventing BPP alone, the cost-effec...

Five sites (urban, suburban, new township, industrial, and rural) were selected and sampled for total suspended particulates (TSP) using high-volume samplers. The TSP were then analysed for their lead and cadmium content in 3 extraction fractions. While the most polluted sites for atmospheric lead and cadmium were different, namely the BBP (Pudu Fire Station) urban and UPM (Universiti Pertanian...

• Innovative work by Kabanets and Impagliazzo [KI03] shows that, in some cases, providing lower bounds on arithmetic circuit size can yield consequences about Boolean complexity classes. For instance, one of the most important problems in BPP that is not known to be in P is Arithmetic Circuit Identity Testing (ACIT), the problem of determining if two arithmetic circuits compute the same functio...

We currently do not have a very good unconditional bound on the power of BPP — in particular, it could be that BPP = NEXP. Perhaps surprisingly, especially in light of the many randomized algorithms known, the current conjecture is that BPP is not more powerful than P. We will return to this point later in the semester when we talk about derandomization. What (unconditional) upper bounds can we...

In phylogenetic inference, the support of an estimated phylogenetic tree topology and its interior branches is usually measured either with non-parametric bootstrap support (BS) values or with Bayesian posterior probabilities (BPPs). Extensive empirical evidence indicates that BPP values are systematically larger than BS when measured on the same data set, but there are no theoretical results s...

Jančar has recently shown that bisimilarity on Basic Parallel Processes (BPP) can be decided in polynomial space (presented at LiCS 2003). In this paper are summarized two results which use general techniques from Jančar’s paper. First result by Kot and Jančar (presented at AVIS 2004) shows that bisimilarity on normed basic parallel processes can be decided in O(n). The second result by Kot and...

Results from twin, family, and adoption studies all suggest that general intelligence is highly heritable. Several studies have shown lower premorbid intelligence in individuals before the onset of both mood disorders and psychosis, as well as in children and adolescents at genetic high risk for developing schizophrenia. Based on these findings, we aim to investigate if the association between ...

1President, 2Researcher 1Egyptian Society of Oral Implantology, Alexandria, Egypt; Faculty of Dentistry, BPP University, London, United Kingdom 2Department of Periodontology, Oral Medicine, Oral Diagnosis and Oral Radiology, Faculty of Dentistry, Tanta University, Egypt Corresponding Author: Ahmed Halim Ayoub, Sporting Omar Lotfy Street, 178 Second Floor, Alexandria, Egypt, Phone: +201222205513...