background: the aim of this study was to compare the skeletal and dental changes of a toothborne (hyrax) and a bone-borne (smile distractor) expansion devices using three-dimensional model of a human skull. materials and methods: a finite element model of human skull was generated using data from 3-d ct scans of an 11-year-old female child. then a hyrax expander (tooth-borne appliance) and smil...

Stability of underground structures is assessed by comparing rock strength with induced stresses resulted from ground stresses. Rock mass surrounding the opening may fail either by fracture or excessive deformation caused. Accurate calculation of induced stresses is therefore fundamental in the stability analysis of an opening. Although numerical methods, particularly finite element method, are...

A variant of Heapsort|named Ultimate Heapsort|is presented that sorts n elements in-place in (n log 2 (n + 1)) worst-case time by performing at most n log 2 n + (n) key comparisons and n log 2 n + (n) element moves. The secret behind Ultimate Heapsort is that it occasionally transforms the heap it operates with to a two-layer heap which keeps small elements at the leaves. Basically, Ultimate He...

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...

since it was first diagnosed in 1914 in marrakesh, schistosomiasis has been a public health problem in morocco for decades. a national control program launched in 1982 has led to a considerable reduction in the incidence and morbidity associated with the disease. consequently, the program has shifted from disease control to an elimination process launched in 1994. this process aimed to eliminat...

modern vehicle bodies make intensive use of high strength steel grades to meet the contradicting demand of lighter weight and simultaneously better mechanical performance. for many steel grades microalloying by niobium is the key to achieve their characteristic property profile. in hsla steels niobium enhances the strength primarily by grain refinement. in interstitial free high strength steels...