Economy and Environmental Problems in the Mexican Coastal States

A canonical correspondence analysis (CCA) for environmental and economic variables was performed for 17 Mexican coastal states. The ordination method allowed us to identify three groups, namely hydroelectric energy generation (I), pollution (II) and harbours (III), which were associated to different human activities. Furthermore, CCA is efficient to help us generate hypotheses for future research. It is therefore advised that CCA should be used for routine analyses into economics.Coastal States of Mexico, Canonical Correspondence Analysis, Diversity Index, Economic Development, Environmental Variables.

La metodología de trabajo por proyectos aplicada a la elaboración del TFG por parte de futuros maestros de Educación Infantil en el EEES

Antecedentes: El Trabajo Fin de Grado en la Facultad de Ciencias de la Educación, Universidad de Sevilla, cumple en este curso 2014/2015 su segunda edición, cabe preguntarse a modo de problema de investigación: ¿cuál puede resultar la metodología más adecuada para construir un proceso de formación y capacitación profesional con futuros/as maestros/as de educación infantil? ¿qué relaciones establecen los/as maestros/as en formación inicial entre las prácticas universitarias, la docencia universitaria y su capacitación profesional? Método: Para este trabajo seleccionó una metodología de investigación acción sobre el estudio de caso centrado en un grupo de ocho estudiantes, Grado Educación Infantil. Las técnicas de investigación utilizadas son: análisis de contenido del diario de campo del docente, cuestionarios de evaluación, tutorías y revisión de los trabajos. Resultados: Existen relaciones entre el diseño de trabajo por proyectos elaborado por el profesor/investigador y el realizado por las estudiantes. Los/as estudiantes aprenden de modo coherente con una metodología de trabajo por proyectos, integrando y desarrollando las competencias profesionales de aprender a aprender, emprendimiento educativo, creatividad, innovación e investigación.Background: The Final Thesis in the Educational Science Faculty, University of Seville, accomplishes this year 2014/15 its second publication. It is possible to ask oneself by way of a research problem: Which methodology could be the most appropriate to develop a professional development programme with future pre-school teachers? What links do teachers, in initial teacher training, establish between school placements, university education and professional development? Methodology: For this project, participatory action research was chosen for a case study based on a group of eight students who are studying pre-school level education. The investigation techniques used are: an analysis of the content of the teacher‘s field diary, evaluation questionnaires, seminars and task inspections. Results: There is a link between project work design elaborated by the teacher or investigator, and that carried out by the students. Students learn in a coherent way, with project work methodology, integrating and developing the following professional skills; learning to learn, educational entrepreneurship, creativity, innovation and investigation

A General Framework for Static Cost Analysis of Parallel Logic Programs

The estimation and control of resource usage is now an important challenge in an increasing number of computing systems. In particular, requirements on timing and energy arise in a wide variety of applications such as internet of things, cloud computing, health, transportation, and robots. At the same time, parallel computing, with (heterogeneous) multi-core platforms in particular, has become the dominant paradigm in computer architecture. Predicting resource usage on such platforms poses a difficult challenge. Most work on static resource analysis has focused on sequential programs, and relatively little progress has been made on the analysis of parallel programs, or more specifically on parallel logic programs. We propose a novel, general, and flexible framework for setting up cost equations/relations which can be instantiated for performing resource usage analysis of parallel logic programs for a wide range of resources, platforms, and execution models. The analysis estimates both lower and upper bounds on the resource usage of a parallel program (without executing it) as functions on input data sizes. In addition, it also infers other meaningful information to better exploit and assess the potential and actual parallelism of a system. We develop a method for solving cost relations involving the max function that arise in the analysis of parallel programs. Finally, we instantiate our general framework for the analysis of logic programs with Independent AndParallelism, report on an implementation within the CiaoPP system, and provide some experimental results. To our knowledge, this is the first approach to the cost analysis of parallel logic programs

Phase mapping of aging process in InN nanostructures: oxygen incorporation and the role of the zincblende phase

Uncapped InN nanostructures undergo a deleterious natural aging process at ambient conditions by oxygen incorporation. The phases involved in this process and their localization is mapped by Transmission Electron Microscopy (TEM) related techniques. The parent wurtzite InN (InN-w) phase disappears from the surface and gradually forms a highly textured cubic layer that completely wraps up a InN-w nucleus which still remains from original single-crystalline quantum dots. The good reticular relationships between the different crystals generate low misfit strains and explain the apparent easiness for phase transformations at room temperature and pressure conditions, but also disable the classical methods to identify phases and grains from TEM images. The application of the geometrical phase algorithm in order to form numerical moire mappings, and RGB multilayered image reconstructions allows to discern among the different phases and grains formed inside these nanostructures. Samples aged for shorter times reveal the presence of metastable InN:O zincblende (zb) volumes, which acts as the intermediate phase between the initial InN-w and the most stable cubic In2O3 end phase. These cubic phases are highly twinned with a proportion of 50:50 between both orientations. We suggest that the existence of the intermediate InN:O-zb phase should be seriously considered to understand the reason of the widely scattered reported fundamental properties of thought to be InN-w, as its bandgap or superconductivity.Comment: 18 pages 7 figure

Culture: Not just Burns – what about the poet Robert Fergusson?

No abstract available

Spatial distribution of small hydrocarbons in the neighborhood of the Ultra Compact HII region Monoceros R2

We study the chemistry of small hydrocarbons in the photon-dominated regions (PDRs) associated with the ultra-compact HII region Mon R2. Our goal is to determine the variations of the abundance of small hydrocarbons in a high-UV irradiated PDR and investigate their chemistry. We present an observational study of CH, CCH and c-C$_3$H$_2$ in Mon R2 combining data obtained with the IRAM 30m telescope and Herschel. We determine the column densities of these species, and compare their spatial distributions with that of polycyclic aromatic hydrocarbon (PAH). We compare the observational results with different chemical models to explore the relative importance of gas-phase, grain-surface and time-dependent chemistry in these environments. The emission of the small hydrocarbons show different patterns. The CCH emission is extended while CH and c-C$_3$H$_2$ are concentrated towards the more illuminated layers of the PDR. The ratio of the column densities of c-C$_3$H$_2$ and CCH shows spatial variations up to a factor of a few, increasing from $N(c-C$_3$H$_2$)/N(CCH)\approx0.004$ in the envelope to a maximum of $\sim0.015-0.029$ towards the 8$\mu$m emission peak. Comparing these results with other galactic PDRs, we find that the abundance of CCH is quite constant over a wide range of G$_0$, whereas the abundance of c-C$_3$H$_2$ is higher in low-UV PDRs. In Mon R2, the gas-phase steady-state chemistry can account relatively well for the abundances of CH and CCH in the most exposed layers of the PDR, but falls short by a factor of 10 to reproduce c-C$_3$H$_2$. In the molecular envelope, time-dependent effects and grain surface chemistry play a dominant role in determining the hydrocarbons abundances. Our study shows that CCH and c-C$_3$H$_2$ present a complex chemistry in which UV photons, grain-surface chemistry and time dependent effects contribute to determine their abundances.Comment: 18 pages, 11 figures, 7 tables. Proposed for acceptance in A&A. Abstract abridge