Despite the availability of a large number of protein-protein interactions (PPIs) in several species, researchers are often limited to using very small subsets in a few organisms due to the high prevalence of spurious interactions. In spite of the importance of quality assessment of experimentally determined PPIs, a surprisingly small number of databases provide interactions with scores and con...

This chapter surveys the fundamental forces that drive the formation and size of cities. We discuss the different types of agglomeration economies generated by a dense web of activities, with special emphasis on the benefits associated with the clustering of highly skilled workers. The distribution of activities within cities results from the trade-off between commuting and housing costs. We sh...

The fact that most of the Universe is dark and composed of new, exotic components has been established over the years by means of various sets of observations, which recently have converged into a consistent picture where the Universe is about critical and dominated by an exotic form of matter and by an unexpected type of dark energy. In terms of the density parameter Ω, the current view can be...

Figure 1: Fundamental region R of the Modular Group, given by {z ∈ H : |z| > 1,− 2 ≤ Re(z) ≤ 1 2} The Klein Quartic curve is famous for its symmetries and many visualizations are created to capture these in lower dimensions. In fact, it has the largest possible automorphism group for its genus, the simple group of order 168. Yet, interest in this algebraic curve started with knowledge of the ex...

Examples are given of the usefulness of electrons in interaction with nuclei for probing fundamental interactions and structure.

A complex tone composed of only higher-order harmonics elicits a pitch percept equivalent to the tone's missing fundamental frequency (f0). When judging the direction of residue pitch change between two such tones, however, listeners may have completely opposite perceptual experiences depending on whether they are biased to perceive changes based on the overall spectrum or the missing f0 (harmo...

Developing persuasive and consistent models of educational performance has proved elusive. Existing modelling suggests no clear relationship between resources and student performance. This mirrors observed policy outcomes. A possible explanation is that the achievement process is a complicated interactive one such that simple linear additive formulations break down. This analysis presents a sty...

für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namen...

This paper deals with the prcblem of simulating the notions of a complex land vehicle moving in a natural environment. The contribution presented here is z motion generctor which predicts the dynamic behaviour of the vehicle when executing a given nominal motion plan. This ptan is expressed in terms of a channel to follow and of a set of intermediate subgoals to reach. Solving this motion gener...