Even Dimensional Improper Affine Spheres

There are exactly two different types of bi-dimensional improper affine spheres: the non-convex ones can be modeled by the center-chord transform of a pair of planar curves while the convex ones can be modeled by a holomorphic map. In this paper, we show that both constructions can be generalized to arbitrary even dimensions: the former class corresponds to the center-chord transform of a pair of Lagrangian submanifolds while the latter is related to special K\"ahler manifolds. Furthermore, we show that the improper affine spheres obtained in this way are solutions of certain exterior differential systems. Finally, we also discuss the problem of realization of simple stable Legendrian singularities as singularities of these improper affine spheres.Comment: 26 page

A importância da marca no mercado atual estudo de caso: marca NIKE

A monografia é dividida em três partes, estas partes são direcionadas para o objetivo em questão: comprovar a importância da marca no mercado atual. Para falar sobre mercado atual foi preciso pesquisar sobre a sociedade do consumo, indústria cultural e globalização, assuntos abordados no primeiro capítulo. O segundo capítulo retrata a história da marca, seu conceito, e a utilização da mesma como estratégia de posicionamento e venda. Já o terceiro capítulo é direcionado para o estudo de caso da marca Nike. Nesse capítulo, feito por pesquisa bibliográfica, é descrito a história da empresa, estratégias, posicionamento de marca, algumas campanhas e uma pesquisa exploratória em torno do objetivo da monografia. Por fim, a conclusão final de todo trabalho, na qual encontra-se a resposta à questão colocada inicialmente

Geographic variation of Moenkhausia bonita (Characiformes: Characidae) in the rio de la Plata basin, with distributional comments on M. intermedia

Moenkhausia bonita es registrada en numerosas localidades adicionales de las cuencas de los ríos Bermejo, Paraná, Paraguay, y Uruguay. Dado que estos hallazgos expanden ampliamente el rango distribucional de M. bonita, nosotros llevamos a cabo una comparación intraespecífica, usando métodos multivariados para 18 características morfométricas y 8 merísticas que fueron tomados en una muestra exhaustiva de 536 especímenes. Todas las localidades fueron repartidas en cuatro grupos principales como sigue: Bermejo, Paraná, Paraguay y Uruguay. Los resultados de las comparaciones morfométricas mostraron diferencias significativas a través de los grupos bajo estudio, excepto entre los grupos Paraguay y Uruguay. Diferencias estadísticas fueron encontrados en la mayoría de las comparaciones entre los grupos, especialmente en aquellas obtenidas de los análisis discriminantes canónicos (ADC). Los especímenes de la cuenca del Bermejo fueron encontrados como el grupo más divergente en la mayoría de las comparaciones morfológicas. No obstante, estas leves diferencias encontradas en la morfología del cuerpo son consideradas dentro de la variación intraespecífica de M. bonita y parecen estar influidas por características ambientales y espaciales de los drenajes. Dado que M. bonita fue previamente identificada como M. intermedia en la cuenca del río de La Plata, comentarios distribucionales sobre esta última especie en esta cuenca son presentados.Moenkhausia bonita occurs in numerous additional localities from the Bermejo, Paraná, Paraguay, and Uruguay river basins. Given that this finding greatly expands the distributional range of M. bonita, we carried out an intraspecific comparison, using multivariate methods for 18 morphometric and eight meristic characters taken from a comprehensive sample of 536 specimens. All localities were distributed in four major geographic groups as follows: Bermejo, Paraná, Paraguay, and Uruguay. Results of the morphometric comparisons showed significant differences among the studied groups except between the Paraguay and Uruguay groups. Statistical differences in meristic values were found for most between-group comparisons, especially in those resulting from discriminant canonical analyses (DCA). Specimens from the Bermejo basin were the most distinct group in most morphological comparisons. However, the overall subtle differences found in body morphology likely reflect intraspecific variation within M. bonita and seem to be mainly influenced by spatial and environmental features of drainages. As M. bonita was previously identified as M. intermedia in the río de La Plata basin, distributional comments on the latter species in that basin are provided.Fil: Vanegas Rios, James Anyelo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología de Vertebrados; ArgentinaFil: Britzke, Ricardo. Universidad Técnica de Machala; Ecuador. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Mirande, Juan Marcos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina. Fundación Miguel Lillo; Argentin

Analysis of professional perceptions relating to the effectiveness of codes of ethics for journalists in Spain

The methodology used in the present study is based on quantitative content analysis using the survey technique. This technique makes it possible to obtain empirical data on various key aspects of the profession that are determining factors in ascertaining Spanish journalists’ views of one of the instruments of accountability that is external to the media: general ethical codes. The results show that Spanish journalists are largely confident in the effectiveness of ethical codes in their profession. Likewise, it was seen that variables such as age, professional experience or the media with which they work influence the perceptions that professionals have of such instruments. If we understand journalism as a profession whose mission is to guarantee the citizenship their right to information, it is essential to be familiar with the tools provided by the profession itself in order to be accountable to the public regarding this professional mission. Hence the importance of instruments of accountability and the perceptions of the professionals themselves regarding their effectiveness

Caracterización agromorfológica de diez salecciones de ají escabeche (Capsicum baccatum var. pendulum), bajo condiciones de La Molina

Universidad Nacional Agraria La Molina. Facultad de Agronomía. Departamento Académico de HorticulturaEl ají escabeche (Capsicum baccatum var. pendulum), es considerado el cultivo de mayor importancia dentro de los ajíes locales cultivados en el Perú, por tal motivo el presente trabajo de investigación tiene como objetivo la caracterización agromorfológica de diez selecciones de ají escabeche, empleando descriptores de capsicum spp. (IPGRI, 1995), con la finalidad de generar información útil para un proceso de mejoramiento genético. Se emplearon 160 plantines de cada selecciones, los cuales fueron distribuidos en cuatro bloques de manera equitativamente y en forma al azar, el ensayo se instalo en el campo denominado “Pancal”, el cual se encuentra ubicado en la Universidad Nacional Agraria La Molina, durante el periodo octubre 2015 a abril 2016. Para el presente estudio se emplearon 20 descriptores morfológicos de capsicum spp, útiles para diferenciar el germoplasma y conocer características de interés de las selecciones estudiadas. Se empleó el análisis de varianza (para validar la utilidad de los descriptores) a una probabilidad 5%, el cual incluyen medidas de posición y dispersión (media, desviación estándar y coeficiente de variación). Se encontraron diferencias significativas (P<0,05) entre selecciones en la mayoría de caracteres, especialmente en los relacionados con el fruto, lo que refleja una considerable variabilidad e indica que es posible seleccionar materiales con características de fruto más adecuadas para los mercados. En el análisis de conglomerados jerárquico se formaron tres agrupamientos, el cual separó a la selección A-21 (grupo III) del resto de selecciones, encontrándose características únicas, por producir un alto número de frutos de tamaño muy pequeño y con bajo número de semillas, el cual lo separa en un grupo muy aparte de las demás agrupaciones estudiadas, que a su vez formaron grupos con mínimas diferencias entre sí.The chilli pepper (Capsicum baccatum var. Pendulum) is considered the most important crop within the local pepper cultivated in Peru, for this reason the present research aims at the morphological characterization of ten selections of pickled pepper, employing Descriptors of capsicum spp. (IPGRI, 1995), in order to generate useful information for a process of genetic improvement. A total of 160 seedlings were used from each of the selections, which were distributed in four blocks equally and randomly. The trial was installed in the field called "Pancal", which is located at the National Agrarian University La Molina, during the period from October 2015 to April 2016. For the present study we used 20 morphological descriptors of capsicum spp, useful to differentiate the germplasm and to know the characteristics of interest of the studied selections. The analysis of variance (to validate the utility of the descriptors) was used at a 5% probability, which includes position and dispersion measures (mean, standard deviation and coefficient of variation). Significant differences (P <0.05) were found between selections in most of the characters, especially those related to the fruit, which reflects a considerable variability and indicates that it is possible to select materials with fruit characteristics more suitable for the markets. In the hierarchical cluster analysis three groupings were formed, which separated the selection A-21 (group III) from the rest of selections, being unique characteristics, to produce a high number of fruits of very small size and with low number of seeds , Which separates it into a group very apart from the other groups studied, which in turn formed groups with minimal differences between them.Tesi

Comparison of cadmium adsorption by inorganic adsorbents in column systems

Carbonaceous material obtained from industrial sewage sludge and Na-zeolitic tuff were used to adsorb cadmium from aqueous solutions in column systems. The Bohart, Thomas, Yoon–Nelson, and mass transfer models were successfully used to fit the adsorption data at different depths, and the constant rates were evaluated. The parameters such as breakthrough and saturation times, bed volumes, kinetic constants, adsorption capacities, and adsorbent usage rates (AUR) were determined. The results show that the breakthrough time increases proportionally with increasing bed height. The adsorption capacity for cadmium for Na-zeolitic tuff was higher than carbonaceous material. The results indicated that the Na-zeolitic tuff is a good adsorbent for cadmium removal.CONACYT, project 131174Q, and PROMEP/103.5/13/6535 project

Microvascular Obstruction in ST-Segment Elevation Myocardial Infarction : Looking Back to Move Forward. Focus on CMR

After a myocardial infarction (MI), despite the resolution of the coronary occlusion, the deterioration of myocardial perfusion persists in a considerable number of patients. This phenomenon is known as microvascular obstruction (MVO). Initially, the focus was placed on re-establishing blood flow in the epicardial artery. Then, the observation that MVO has profound negative structural and prognostic repercussions revived interest in microcirculation. In the near future, the availability of co-adjuvant therapies (beyond timely coronary reperfusion) aimed at preventing, minimizing, and repairing MVOs and finding convincing answers to questions regarding what, when, how, and where to administer these therapies will be of utmost importance. The objective of this work is to review the state-of-the-art concepts on pathophysiology, diagnostic methods, and structural and clinical implications of MVOs in patients with ST-segment elevation MIs. Based on this knowledge we discuss previously-tested and future opportunities for the prevention and repair of MVO