[1] We explored the dependence of experimental bedrock erosion rate on shear stress, bed load sediment flux, alluvial bed cover, and evolving channel morphology. We isolated these variables experimentally by systematically varying gravel sediment flux Qs and water discharge Qw in a laboratory flume, gradually abrading weak concrete “bedrock.” All else held constant, we found that (1) erosion ra...

The prediction of the service life of concrete materials is difficult, mainly because of their complex heterogeneous microstructure and their random nature. Studying the presence of cracks in concrete and their effect on chloride transport and binding properties is of great interest in civil engineering. Cracks with different widths and depths will reduce the effective cover thickness and accel...

We develop a generic framework for deriving linear-size problem kernels for NP-hard problems on planar graphs. We demonstrate the usefulness of our framework in several concrete case studies, giving new kernelization results for Connected Vertex Cover, Minimum Edge Dominating Set,Maximum Triangle Packing, and Efficient Dominating Set on planar graphs. On the route to these results, we present e...

It seems that the future of collaborative systems implies the incorporation of End-User Development processes and new mechanisms for adaptability, so that each user could be able to fit this specific type of software to their particular needs in a given time. In the case of organizational systems, adaptability characteristics should also cover concrete aspects associated to the nature of organi...

Historically, research has shown that it is neither physically possible nor economically feasible to construct an asphalt concrete pavement surface that provides skid resistance at an adequate level throughout the pavement's service life. Consequently, engineers utilize a seal coat maintenance technique as one way of improving friction performance on roadways. This maintenance technique consist...

We develop an approach to automatically identify the most probable multiword constructions used in children's utterances, given syntactically annotated utterances from the Brown corpus of CHILDES. The found constructions cover many interesting linguistic phenomena from the language acquisition literature and show a progression from very concrete toward abstract constructions. We show quantitati...

The evaluation of effectiveness in Information Retrieval systems has been developed in parallel to its evolution, generating a great amount of proposals to achieve this process. This paper focuses on a particular task of Music Information Retrieval: a system for Cover Song Identification. We present a concrete example and then try to elucidate which metrics work best to evaluate such a system. ...

In this paper, we give a concrete description of the two-fold cover of a simply connected, split real reductive group and its maximal compact subgroup as Chevalley groups. We study the representations of the maximal compact subgroups called pseudospherical representations which appear with multiplicity one in the principal series representation. We introduce a family of canonically defined inte...

We introduce a model for noise-robust analog computations with discrete time that is exible enough to cover the most important concrete cases, such as computations in noisy analog neural nets and networks of noisy spiking neurons. We show that the presence of arbitrarily small amounts of analog noise reduces the power of analog computational models to that of nite automata, and we also prove a ...