We present a new derivation of the foreign-broadened water vapour continuum in the far-infrared (far-IR) pure rotation band between 24 μm and 120 μm (85-420 cm(-1)) from field data collected in flight campaigns of the Continuum Absorption by Visible and IR radiation and Atmospheric Relevance (CAVIAR) project with Imperial College's Tropospheric Airborne Fourier Transform Spectrometer (TAFTS) fa...

Clustering web users based on their access patterns is a quite significant task in Web Usage Mining. Further to clustering it is important to evaluate the resulted clusters in order to choose the best clustering for a particular framework. This paper examines the usage of Kullback-Leibler divergence, an information theoretic distance, in conjuction with the k-means clustering algorithm. It comp...

Studying the communities of microbial species is highly important since many natural and artificial processes are mediated by groups of microbes rather than by single entities. One way of studying them is the search of common metabolic characteristics among microbial species, which is not only a potential measure for the differentiation and classification of closely-related organisms but also t...

We present a natural scenario for obtaining an open universe (Ω0 < 1) through inflation. In this scenario, there are two epochs of inflationary expansion—an epoch of ‘old inflation,’ during which the inflaton field is stuck in a false vacuum, followed by an epoch of ‘new inflation,’ during which the inflaton field slowly rolls toward its true minimum. During the first epoch, inflation solves th...

The following theorem is proved, answering a question raised by Davies in 1963. If L0 ∪L1 ∪L2 ∪ . . . is a partition of the set of lines of R, then there is a partition R = S0 ∪ S1 ∪ S2 ∪ . . . such that |` ∩ Si| ≤ 2 whenever ` ∈ Li. There are generalizations to some other, higher-dimensional subspaces, improving recent results of Erdős, Jackson & Mauldin. 0. Introduction. A series of papers, b...

ion in his paintings. He uses the real world as a point of reference and departs from it at the same time. He does this by using an abstract approach to apply oil paint to canvas. He is emphasising the painting as an artificial construct. Davies draws on her experience as a painter who erodes boundaries between her natural forms and the space around these forms. This sentiment is carried over i...

de Sitter spacetime and Bunch-Davies vacuum are a solution to the semiclassical Einstein-Schrödinger equations describing the evolution of spacetime geometry and a massive scalar quantum field with arbitrary coupling to curvature. The stability of this solution is proven by calculating the renormalized energy momentum tensor expectation value for small spatially homogeneous deviations from the ...

Résumé. L’algorithme des K-moyennes prédictives est un des algorithmes de clustering prédictif visant à décrire et à prédire d’une manière simultanée. Contrairement à la classification supervisée et au clustering traditionnel, la performance de ce type d’algorithme est étroitement liée à sa capacité à réaliser un bon compromis entre la description et la prédiction. Or, à notre connaissance, il ...