Fluidity is open-source, multi-scale, general purpose CFD model. It is a finite element model using an unstructured mesh which is adapted during the course of a simulation. Reordering of the mesh elements and vertices has been implemented, reordering occurring at input and at each adapt step. For an OpenMP simulation using all 4 UMA regions in a single HECToR node, a 3‒5% performance improvemen...

Definition For an element x of a topological space X , we will write Ux for the set of all open neigborhoods of x. f : X → Y is a local homeomorphism if for every x ∈ X there exists a U ∈ Ux such that f |U is a homeomorphism onto an open subset of Y . Denote by intA the interior of A ⊆ X . For any pair of maps φ : U → Y , φ : V → Y defined on open subsets U, V ⊆ X , define the (set) equalizer e...

We discuss an approach for targeted transformations of content to open sets of devices. The key element of this approach is the RDF Model that represents devices as sets of generic features and represents content resources as sets of components. The other key element is the RDF server utilizing this Model to support transformations across different devices and presentation channels. We illustra...

Among all collections of a given number of k-element subsets of an n-element groundset find a collection which maximizes the number of pairs of subsets which intersect in k − 1 elements. This problem was solved for k = 2 by Ahlswede and Katona, and is open for k > 2. We survey some linear algebra approaches which yield to estimations for the maximum number of pairs, and we present a new and sho...

In this paper we describe the theory and code implementation of a tool to obtain the time-dependent pressure distribution on a marine structure using the results from a boundary element method code (BEM). Here, we present a case study of a floating wave energy converter (WEC) in regular waves. The results are verified by comparison with open-source codes and then used to run a structural simula...

nakhlak lead mine is located at the nakhlak mountain 55 km ne of anarak town in isfahan province. the mineralogy is simple; galena and barite are the main primary minerals and cerussite is the main secondary mineral. sphalerite, pyrite, chalcopyrite, tetrahedrite-tennantite and acanthite occur as minor and trace mineral inclusions in galena. secondary minerals are anglesite, plattnerite, wulfen...

fast and unplanned city growth, has effects such as isolation of village societies, threatening urbancores and centers and small and weak societies, destruction of open spaces and open and natural regions. smart growthoffers a sustainable way for urban developing with appropriate use of available sources, increase of urban services,developing neighborhoods with different uses, making public tra...

The complete nucleotide sequence of a mobile element from Trypanosoma brucei is presented along with the sequence of its target site, which shows that the insertion has generated a 7 base pair direct repeat. The cloned copy of the element is a dimeric structure, one end of each monomer consisting of a stretch of 14 A residues preceded by a putative trypanosome polyadenylation signal. Six base p...

Open access SimulaSpringer Brief on mesh generation, mathematical modeling, finite element methods, scientific computing, MRI.

Different combinations of the artero-ventricular coupling design (numerical, physical and hybrid) and the arterial system structure (four-element standard, simplified, modified and three-element three-lump "ladder" Windkessel) have been applied in an open loop circulatory model to test their influence on selected ventricular and circulatory variables. Numerical investigations have shown that a ...