High availability has become increasingly important to businesses with the advent of the Web and various associated e-commerce services. This paper describes the key attributes of the very highest availability systems. Such systems and their associated support environments are qualitatively different than other systems, even other high availability systems; for the purposes of this paper these ...

The core idea of availability-based routing consists of exploiting the availability as a link-state metric: this kind of approach has received attention by virtue of the ability to avoid excessively unavailable paths. A recent availabilitybased heuristic design technique for reliable optical transport networks [IEEE Sel. Areas Commun. 23, 1520 (2005)] showed that the availability metric returns...

In this paper, the redundancy and synchronization scheme for the high reliable surveillance data processing system for air traffic control is suggested. Two indices for reliability of surveillance data processing system are identified and full triple redundancy scheme and high availability software for the redundancy control are proposed. The synchronization issues among triple redundant nodes ...

phosphorus (p) sorption in soils is a key process governing its availability to crops. there has been scanty information available on the p sorption characteristics of calcare-ous soils of western azarbaijan province, iran. in this study, p sorption characteristics and their relationship to soil properties were determined in 36 soil samples belonging to 15 agricultural soil series located in th...

The increasing number of Internet users has caused a dramatic increase in electronic commerce. This growth is outpacing technologies for dependability causing traditional views of high availability to come under question. In particular, Internet failures are a phenomenon external to the owner of a commerce site that must be dealt with, and therefore, geographically distributed servers are a bas...

Metabolic inflexibility is defined as an impaired capacity to switch between different energy substrates and is a hallmark of insulin resistance and type 2 diabetes mellitus (T2DM). Hence, understanding the mechanisms underlying proper metabolic flexibility is key to prevent the development of metabolic disease and physiological deterioration. An important downstream player in the effects of me...

Methanothermobacter thermautotrophicus strain ΔH is a model hydrogenotrophic methanogen, for which extensive biochemical information, including the complete genome sequence, is available. Nevertheless, at the cell membrane lipid level, little is known about the responses of this archaeon to environmental stimuli. In this study, the lipid composition of M. thermautotrophicus was characterized to...

Washed cells of strain H18, a newly isolated ruminal selenomonad, decarboxylated succinate 25-fold faster than Selenomonas ruminantium HD4 (130 versus 5 nmol min-1 mg of protein-1, respectively). Batch cultures of strain H18 which were fermenting glucose did not utilize succinate, and glucose-limited continuous cultures were only able to decarboxylate significant amounts of succinate at slow (l...