A rock mass is a material quite different from other structural materials used in civil engineering. It is heterogeneous and quite often discontinuous, but is one of the materials in the earth's crust, which is most used in man's construction. Ideally, a rock mass is composed of a system of rock blocks and fragments separated by discontinuities forming a material in which all elements behave in...

i) ‘English is neutral’ since no cultural requirements are tied to the learning of English, [...] English belongs to everyone or no one, or at least is quite often regarded as having this property. Ronald Wardhaugh (1987) ii) ‘English is imperialist’ What is at stake when English spreads is not merely the substitution or displacement of one language by another [...] from an awareness of this as...

In this paper, we describe improvements to the function field sieve (FFS) for the discrete logarithm problem in Fpn , when p is small. Our main contribution is a new way to build the algebraic function fields needed in the algorithm. With this new construction, the heuristic complexity is as good as the complexity of the construction proposed by Adleman and Huang [2], i.e Lpn [1/3, c] = exp((c ...

With great interest we read the recently published guidelines of European Resuscitation Council (ERC) on adult cardiopulmonary resuscitation (CPR).1Perkins G.D. Graesner J.-T. Semeraro F. et al.European Guidelines 2021: executive summary.Resuscitation. 2021; 161: 1-60https://doi.org/10.1016/j.resuscitation.2021.02.003Abstract Full Text PDF PubMed Scopus (41) Google Scholar, 2Olasveengen T.M. Ri...

The original problem of supervised classification considers the task of automatically assigning objects to their respective classes on the basis of numerical measurements derived from these objects. Classifiers are the tools that implement the actual functional mapping from these measurements—also called features or inputs—to the so-called class label—or output. The fields of pattern recognitio...

The quantitative investigation of how networks of microtubules contract can boost our understanding of actin biology.

Thromb Haemost 2008; 99: 655–656 Acute pulmonary embolism (PE) and deep venous thrombosis (DVT) are pathophysiologically linked manifestations of the same disease, but their natural course, prognosis, and therapeutic management are quite different in clinical practice. Clearly, the risk of death related to the initial acute episode is higher in patients who present with PE than in those with DV...

From what we can observe, there is no symmetry between matter and antimatter in the Universe. All structures, from unimaginably large clusters of galaxies to microscopic human cells, are made of matter: protons, neutrons, and electrons. Though it is possible to produce antimatter—antiprotons, antineutrons, and positrons—in high-energy particle collisions, and even make medical use of positrons,...