An evolutionary approach to the delimitation of labour market areas: an empirical application for Chile

An evolutionary approach to the delimitation of labour market areas: an empirical application for Chile. Spatial Economic Analysis. Labour market areas (LMAs) are argued to represent a more appropriate policy framework than administrative units for the analysis of spatial labour market activity. This article develops LMAs for Chile by applying an evolutionary computation approach. This innovative approach defines LMAs through an optimization process by maximization of internal cohesion, subject to restrictions of minimum levels of self-containment and population. To evaluate the appropriateness of the LMAs, comparative analyses are performed between alternative delimitations based on different parameter configurations of the proposed method versus administrative boundaries and the most widely used method for official LMA delimitation, the travel-to-work areas method

Tetradactyl footprints of an unknown affinity theropod dinosaur from the upper jurassic of Morocco

Background: New tetradactyl theropod footprints from Upper Jurassic (Oxfordian-Kimmeridgian) have been found in the Iouaridène syncline (Morocco). The tracksites are at several layers in the intermediate lacustrine unit of Iouaridène Formation. The footprints were named informally in previous works "Eutynichnium atlasipodus". We consider as nomen nudum. Methodology/Principal Findings: Boutakioutichnium atlasicus ichnogen. et ichnosp. nov. is mainly characterized by the hallux impression. It is long, strong, directed medially or forward, with two digital pads and with the proximal part of the first pad in lateral position. More than 100 footprints in 15 trackways have been studied with these features. The footprints are large, 38-48 cm in length, and 26-31 cm in width. Conclusions/Significance: Boutakioutichnium mainly differs from other ichnotaxa with hallux impression in lacking metatarsal marks and in not being a very deep footprint. The distinct morphology of the hallux of the Boutakioutichnium trackmaker -i.e. size and hallux position- are unique in the dinosaur autopodial record to date. © 2011 Nouri et al

Chromomagnetic Dipole Moment of the Top Quark Revisited

We study the complete one-loop contributions to the chromagnetic dipole moment $\Delta\kappa$ of the top quark in the Standard Model, two Higgs doublet models, topcolor assited technicolor models (TC2), 331 models and extended models with a single extra dimension. We find that the SM predicts $\Delta\kappa = - 0.056$ and that the predictions of the other models are also consitent with the constraints imposed on $\Delta\kappa$ by low-energy precision measurements.Comment: 20 pages, 5 figures, Updat

Low interface trap density in rapid thermally annealed Al/SiNx : H/InP metal-insulator-semiconductor devices

A minimum interface trap density of 10(12) eV(-1) cm(-2) was obtained on SiNx:H/InP metalinsulator-semiconductor structures without InP surface passivation. The SiNx:H gate insulator was obtained by the electron cyclotron resonance plasma method. This insulator was deposited in a single vacuum run and was composed of two layers with different nitrogen-to-silicon ratios. The first layer deposited onto the InP was grown with a nitrogen-to-silicon ratio of N/Si=1.55, whereas the second one was grown with a N/Si ratio of N/Si = 1.43. After the insulator deposition, rapid thermal annealing of the devices was performed at a constant annealing time of 30 s. The interface trap density minimum value was obtained at an optimum annealing temperature of 500 degrees C. Higher annealing temperatures promote thermal degradation of the interface and a sharp increase in the trap density

<em>Study on comparable Labour Market Areas</em>

The purpose of the "Study on comparable Labour Market Areas" is to explore the possibility of a consistent statistical classification of the whole EU territory, defined on a functional basis. To be specific, the objectives are to: (1) outline the state-of-art of applied sciences in the field of LMAs; (2) compare the LMA concepts recognised and implemented in each Member State; (3) draw conclusions on relevant best practice; (4) explore the added value of a common definition for the entire EU; and (5) identify possible ways and means of harmonising LMA definitions across the EU