Electroweak matrix elements at large Nc: matching quarks to mesons

I review some progress made on the problem of calculating electroweak processes of mesons at low energy with the use of an approximation to large-Nc QCD which we call the Minimal Hadronic Approximation. An update of results for the matrix elements of the electroweak penguin operators Q7 and Q8 is also given.Comment: 12 pages, 2 figures. Invited talk given at ``The Phenomenology of Large-Nc QCD'', Arizona State U., January 9-11, 2002. A comment and a reference adde

A Neural, Interactive-predictive System for Multimodal Sequence to Sequence Tasks

We present a demonstration of a neural interactive-predictive system for tackling multimodal sequence to sequence tasks. The system generates text predictions to different sequence to sequence tasks: machine translation, image and video captioning. These predictions are revised by a human agent, who introduces corrections in the form of characters. The system reacts to each correction, providing alternative hypotheses, compelling with the feedback provided by the user. The final objective is to reduce the human effort required during this correction process. This system is implemented following a client-server architecture. For accessing the system, we developed a website, which communicates with the neural model, hosted in a local server. From this website, the different tasks can be tackled following the interactive-predictive framework. We open-source all the code developed for building this system. The demonstration in hosted in http://casmacat.prhlt.upv.es/interactive-seq2seq.Comment: ACL 2019 - System demonstration

K0-anti-K0 mixing in the 1/Nc expansion

We present the result for the invariant B_K factor of K0-anti-K0 mixing in the chiral limit and to next-to-leading order in the 1/Nc expansion. We explicitly demonstrate the cancellation of the renormalization scale and scheme dependences between short- and long-distance contributions in the final expression. Numerical estimates are then given, by taking into account increasingly refined short- and long-distance constraints of the underlying QCD Green's function which governs the B_K factor.Comment: 10 pages, LateX, 2 figures. New hadronic function with triple poles. Improved interpolation between short and long distances. Discussion changed accordingly. Slight changes in final numerical resul

A palladium-hinged organometallic square with a perfect-sized cavity for the encapsulation of three heteroguests

This is a pre-print of an article published in Chemical Communications. The final authenticated version is available online at: https://doi.org/10.1039/C9CC08595E.A nanometer-sized tetrapalladium metallosquare with a pyrene-bisimidazolylidene ligand was found to display a perfect-sized cavity for the encapsulation of three heteroguests, enabling the formation of quintuple D–A–D–A–D stacks. The encapsulating properties of the metallosquare are clearly determined by the presence of the pyrene panels, which endow the metallosquare with a three-dimensional shape, and also behave as effective antennae for π-stacking interactions

A General View of the Citrus Sector in Spain

Agribusiness,