extra-intestinal pathogenic escherichia coli (expec) strains are divided into uropathogenic e. coli (upec), strains causing neonatal meningitis and septicaemic e. coli. the most common pathotype of expec is found among patients with urinary tract infection (uti), defined as upec. these bacteria are responsible for >90% of cases of uti and are often found amongst the faecal flora of the same hos...

A model describing chemical reactions in the stratosphere ([1]) is studied with MCMC methods. The model is a large ODE system consisting of 33 components, roughly 150 reactions and 150 reaction rate parameters. Thus, it is a good case study for adaptive MCMC methods designed for high-dimensional problems. In this case, the Delayed Rejection Adaptive Metropolis (DRAM, [2]) is succesfully applied...

introduction: e-learning is one of the most important and common paradigms of ict in educational areas. it may help promote creativity, an important, basic and effective component of human life. the aim of this paper is to study the effect of e-learning on students' creativity at meshkinshahr payame noor university in the 2012-2013 academic year.materials and methods: a quasi experimental ...

the purpose of this study was to expose a group of iranian students to an e-learning program and find out the effects of this exposure on their learning and motivation strategies. this study made an attempt to evaluate the degree of strategy use in both traditional and e-learning modes of learning. moreover, the effects of the e-learning program of the participants of the study on learning stra...

We present a general model, called the Search/Index Link (SIL) model, for studying peer-to-peer search networks. This model allows us to analyze and visualize existing network architectures. It also allows us to discover novel architectures that have desirable properties.

The aim of this study was to evaluate the biodiversity ofplant associations in On Ebn-e-Ali Mountain in Tabriz and its relationship to various biodiversity indices. Four plant associations including 1) Noaea mucronata- Poetum bulbosa, 2) Noaea mucronata- Brometum tomentellus, 3) related to bush form as well as Poeto bulbosa-Brometum tomentellus and4) Brometo ...

We are developing and evaluating design concepts and principles to guide in the building of cooperative problem-solving systems. In particular, we are studying the design of cooperative systems for enroute flight planning. Our investigation involves a three-stage process, modeling human performance in existing environments, building cognitive artifacts, and studying the performance of people wo...

We develop the density-matrix renormalization group (DMRG) technique for numerically studying incompressible fractional quantum Hall (FQH) states on the sphere. We calculate accurate estimates for ground-state energies and excitation gaps at FQH filling fractions nu=1/3 and nu=5/2 for systems that are considerably larger than the largest ever studied by exact diagonalization. We establish, by c...

We examined how listeners circumscribe referential domains for referring expressions by monitoring participant’s eye movements as they engaged in a natural interactive problemsolving task with another naïve participant. This research had two goals: (1) determine whether existing psycholinguistic methodologies for studying online processing can be extended to interactive conversation, and (2) as...