Distributed systems are subject to a variety of failures and attacks. In this paper, we consider general (Byzantine) failures [11], in which a failed node may exhibit arbitrary behavior. In particular, a failed node may corrupt its local state, send random messages, or even send specific messages aimed at subverting the system. Many security attacks can be modeled as Byzantine failures, such as...

The present study uses stable isotopes of nitrogen and carbon (δNandδC) as trophic indicators for Atlantic bluefin tuna larvae (BFT) (6–10mm standard length) in the highly contrasting environmental conditions of the Gulf of Mexico (GOM) and the Balearic Sea (MED). These regions are differentiated by their temperature regime and relative productivity, with the GOM being significantly warmer and ...

conclusions the presence of bft gene in b. fragilis isolates wouldnot certainly result in diarrheaamong patients. there is not enough accordance between ddm and swedish e tests for antimicrobial susceptibility of b. fragilis for some antibiotics, although in other cases a good agreement was observed. background enterotoxigenic bacteroides fragilis (etbf) are one of the most important anaerobic ...

We investigated the effect of the amount of body condition loss in the dry period and early lactation in 42 high-yielding Holstein-Friesian cows on milk yield and the share of fatty acids in milk fat. Energy reserves were estimated based on the body condition scoring (BCS) and backfat thickness (BFT). Milk yield and milk composition were determined over 305-d lactation. From d 6 to 60 of lactat...

PURPOSE Ulcerative colitis (UC) as a type of inflammatory bowel disease (IBD), presumed to occur as a consequence of increased immune responses to intestinal microbiota in genetically susceptible individuals. Enterotoxigenic Bacteroides fragilis (ETBF) strains are important intestinal bacteria that can be involved in IBD. The aim of this study was to design a quantitative assay for detection of...

Tilapia is a species with great growth potential. Its production comes from semi-intensive system, such as earthen ponds (EP). Recently, biofloc technology (BFT) appears an option to intensify fish production. The objective of this work was compare the organosomatic indices, biochemical parameters, and chemical composition tilapia reared in EP BFT. Fish were grown for 150 days, initial weight ≅...

Despite numerous improvements in the development and maintenance of software, bugs and security holes exist in today’s products, and malicious intrusions happen frequently. While this is a general problem, it explicitly applies to webbased services. However, Byzantine fault-tolerant (BFT) replication and proactive recovery offer a powerful combination to tolerate and overcome these kinds of fau...

The cost of Byzantine Fault Tolerant (BFT) storage is the main concern preventing its adoption in practice. This cost stems from the need to maintain at least 3t+ 1 replicas in different storage servers in the asynchronous model, so that t Byzantine replica faults can be tolerated. In this paper, we present MDStore, the first fully asynchronous read/write BFT storage protocol that reduces the n...

Despite numerous efforts to improve their performance and scalability, Byzantine fault-tolerance (BFT) techniques remain expensive, and few commercial systems use BFT today. We present ZZ, a novel approach to construct general BFT services with a replication cost of practically f + 1, halving the 2f + 1 or higher cost incurred by state-of-the-art approaches. The key insight in ZZ is to use f + ...

Joining massive tables in relational databases have received substantial attention in the past decade. Numerous filtration and indexing techniques have been proposed to reduce the curse of dimensionality. This paper proposes a novel approach to map the problem of pairwise whole-genome comparison into an approximate join operation in the wellestablished relational database context. We propose a ...