Quantifying and verifying network reachability is important for security monitoring and auditing as well as many aspects of network management such as troubleshooting, maintenance, and design. Although attempts to model network reachability have been made, feasible solutions to computing network reachability have remained unknown. In this paper, we propose a suite of algorithms for quantifying ...

Enforcing correct reachability is crucial for an enterprise network to achieve access control, privacy, security and so on. Many sophisticated mechanisms such as router ACLs and firewalls have been developed to enforce the desired reachability. In addition, many other factors such as network dynamics can also impact the network reachability. Thus it is challenging to configure the reachability ...

Two-component signaling systems are ubiquitous in bacteria, Archaea and plants and play important roles in sensing and responding to environmental stimuli. To propagate a signaling response the typical system employs a sensory histidine kinase that phosphorylates a Receiver (REC) domain on a conserved aspartate (Asp) residue. Although it is known that some REC domains are missing this Asp resid...

The prion hypothesis postulates that the infectious agent in transmissible spongiform encephalopathies (TSEs) is an unorthodox protein conformation based agent. Recent successes in generating mammalian prions in vitro with bacterially expressed recombinant prion protein provide strong support for the hypothesis. However, whether the pathogenic properties of synthetically generated prion (rec-Pr...

The extended (E) isoform unique to Fibrinogen420 (Fib420) is distinguished from the conventional chain of Fibrinogen340 by the presence of an additional 236-residue carboxyl terminus globular domain (EC). A recombinant form of EC (rEC), having a predicted mass of 27,653 Daltons, was expressed in yeast (Pichia pastoris) and purified by anion exchange column chromatography. Purified rEC appears t...

BACKGROUND The Auditory Nerve Recovery Function (REC) may be extracted from the Electrically Evoked Compound Action Potential (ECAP). ECAP may be influenced by the stimulation received (or the deprivation of stimulation) and by the etiology of the hearing loss, consequently it might affect the REC. AIM To verify whether there is a correlation between the REC and each of the following factors:...

CONTEXT The effectiveness of cold lateral compaction depends on the root canal preparation and used gutta-percha cone. AIMS The aim of this study is to evaluate finger spreader penetration into root canals prepared with ProTaper (PT) or Reciproc (Rec) systems and filled with gutta-percha cones with different tapers. MATERIALS AND METHODS Twenty-four simulated root canals in resin blocks wit...

Whereas many independent methods are used to estimate snow water equivalent (SWE) and its spatial distribution seasonal variability, a need exists for systematic characterization of inter-model differences at annual, seasonal, regional scales necessary quantify the associated uncertainty in these datasets. This study conducts multi-scale validation comparison, based on Airborne Snow Observatory...

Evidence is presented suggesting that a rec mutation in one strain (presumably female) of a mating pair of Mycobacterium smegmatis strains prevented the appearance of recombinants, whereas a rec mutation in the other strain (presumably male) did not.

PURPOSE Small sided games (SSG) of football are an effective and efficient format to simultaneously train the physiological, technical, and tactical components of football. The duration of the recovery period between bouts of SSG will affect the physiological response to subsequent bouts. It was hypothesised that decreasing the duration of recovery periods separating serial SSG bouts would incr...