An analysis of Helium resonant states in terms of entropy, information, complexity and entanglement measures

ABSTRACT: Shannon entropies and Fisher information calculated from one-particle density distributions and von Neumann and linear entropies (the latter two as a measure of entanglement) computed from the reduced oneparticle density matrix are analyzed for the 1,3Se,1,3 Po and 1,3De Rydberg series of He doubly excited states below the second ionization threshold. We find that both Fisher information and entanglement measures are able to discriminate resonances pertaining to different (K, T)A series

Information and entanglement measures applied to the analysis of complexity in doubly excited states of helium

ABSTRACT: Shannon entropy and Fisher information calculated from one-particle density distributions and von Neumann and linear entropies (the latter two as measures of entanglement) computed from the reduced one-particle density matrix are analyzed for the 1,3 Se, 1,3 Po, and 1,3 De Rydberg series of He doubly excited states below the second ionization threshold. In contrast with the Shannon entropy, we find that both the Fisher information and entanglement measures are able to discriminate low-energy resonances pertaining to different 2(K,T )An2 series according to the Herrick-Sinano˘glu-Lin classification. Contrary to bound states, which show a clear and unique asymptotic value for both Fisher information and entanglementmeasures in their Rydberg series 1sn for n→∞ (which implies a loss of spatial entanglement), the variety of behaviors and asymptotic values of entanglement above the noninteracting limit value in the Rydberg series of doubly excited states 2(K,T )A n2 indicates a signature of the intrinsic complexity and remnant entanglement in these high-lying resonances even with infinite excitation n2→∞, for which all known attempts of resonance classifications fail in helium

Field observations of wave and current characteristics on a microtidal reflective beach

At Costa Verde beach, Colombia, an intermediate reflective beach, the contributions of gravity (G) and infragravity (IG) waves to the evolution of the free surface and the cross-shore and alongshore velocities during two climatic periods were determined by applying the continuous wavelet transformation to sensor data recorded in field campaigns. In the dry season, the highest values of IG energy were found in the vicinity of the coastline, due to reflection processes in the área near the foreshore. Additionally, the cross-wavelet and coherence spectra between the free surface and the cross-shore and alongshore velocities allowed the identification of cross-shore and alongshore standing ‘‘leaky’’ waves and standing ‘‘edge’’ waves. In the rainy (wet) season, cross-shore and alongshore progressive leaky waves predominated in the área farthest from the shoreline. Close to the shore, mostly cross-shore standing leaky waves predominated because of reflection dynamics. On Costa Verde beach, the wave breaking is usually of the plunging type, which is characteristic of an intermediate reflective beach. The dimensionless fall velocity parameter (X) indicated that Costa Verde assumes the form of an intermediate ridge-runnel beach in the rainy (wet) season (low swell energy) and an intermediate transverse bar and rip beach in the dry season (high swell energy). This means that the Costa Verde beach tends to have small rip currents and pronounced ‘‘cusps.’’ Despite the lack of conclusive evidence to suggest that the appearance of cusps and rip currents is due to the presence of standing edge waves during the dry season, the data show that during the period of high energy swell, IG waves exist simultaneously with the cusps as small rhythmic systems of rip currents

Sílices mesoporosas a partir de porógenos derivados de aceites vegetales

Este trabajo reporta una forma novedosa para la producción de sílices porosas mediante le técnica sol-gel usando agentes porógenos derivados de aceites vegetales, específicamente glicerol y monoestearato de glicerol como orientadores de la estructura porosa, los cuales son de bajo costo y de alta disponibilidad comercial. Las sílices obtenidas presentan características porosas interesantes para una potencial aplicación en catálisis heterogénea, con área superficial (método BET) de 420m2/g, volumen total de poros de 0.92cm3/g y estrecha distribución de tamaños de poro (método BJH) alrededor de 75Å

The potential of the Green Bond markets in Latin America and the Caribbean

The publication of this study is part of the EU-LAC Foundation’s continued commitment to supporting the partnership agenda between Europe, Latin America and the Caribbean involving the participation and inputs from civil society and other social actors. One of the areas of priority for the bi-regional strategic partnership is addressing climate change. The countries of both regions have been the driving force of and have adopted the Paris Agreement on Climate Change, as well as the Sustainable Development Goals (SDGs). The revised chapter 2 of the EU-CELAC Action Plan (Brussels, 2018) indicates the need for “the optimization and scaling up of existing and upcoming networks and programmes in Latin America and in the Caribbean, taking advantage of the opportunities offered by investment facilities, as appropriate. In addition, promote triangular cooperation to leverage the contributions of other actors and resources, as well as innovative sources and mechanisms of additional financing”. To effectively combat climate change, it is urgent and necessary to fund mitigation and adaptation efforts at various levels. In recent years, green bonds have increasingly stood out as a funding instrument for green projects that contribute to tackling climate change. The success of the green bond market to raise capital for the implementation of the 2030 agenda is stimulating strong interest in a growing number of countries to develop national green bond frameworks that link international good practice to local priorities. In this context, based on a study carried out by the European Commission in 2016 on the development and functioning of the green bonds market in Europe, the EU-LAC Foundation launched in 2019 a call for a study on the potential of the green bonds market in Latin America and the Caribbean, including comparative aspects with the European market. The consortium of researchers selected by the call was led by EAFIT University and had the participation of Hill Consulting and Get2C. The study presented in this publication analyses the incentives and barriers for the expansion of the green bond market in LAC. To this end, 4 case studies were deepened to exploring aspects related to the regulatory framework and governance structures, standards, accountability, policies and programmes, actors and sectors. The report also presents a set of recommendations. This publication is timely as 2020 marks the beginning of a decade of urgent action on climate and sustainability where the role of the financial sector will be crucial. The EU-LAC Foundation would like to thank Ernesto Jeger, Programme Manager of Sustainable Development and Economic Issues, who coordinated this project from the Foundation.EU-LAC Foundatio

Estrategias de eficiencia energética en vehículos livianos del transporte por carretera en Colombia

In Colombia, road transportation consumes 44% of the overall energy available. This sector is considered a great consumer of oil-based-fuels and the least efficient productive sector. It was identified that technological and operational strategies like eco-driving enhance the performance of vehicles. A set of methodologies were implemented based on the measurement of energy consumption and emissions of vehicles, from which theoretical and experimental models have been performed. Besides, the evaluation of eco-driving as an energy efficiency strategy for Light Duty Vehicles in Colombia was carried out by conducting tests in a chassis dynamometer, based on the procedures described by the CFR 40 of the United States of America and COPANT. In addition, fuel consumption of a Light Duty Vehicle was measured and it was possible to identify the potential of eco driving as it was achieved an increase up to 20% in the energy performance of the vehicle.El sector de transporte por carretera en Colombia es el responsable del 44 % del consumo de energéticos. Igualmente, se clasifica como el principal consumidor de los combustibles derivados del petróleo y el sector productivo con mayores pérdidas de energía. En este estudio se presentan estrategias tecnológicas y operacionales que mejoran el rendimiento de los vehículos livianos. Además, se identifican metodologías encaminadas a la medición del consumo energético y emisiones de los vehículos y se evalúa la conducción eficiente como estrategia de eficiencia energética en Colombia. Como resultado, se implementó la metodología de pruebas basada en la Regulación CFR 40 de los Estados Unidos y COPANT en un laboratorio del país, y se evaluó mediante el aseguramiento metrológico el consumo de combustible en un vehículo liviano de combustión interna. Adicionalmente, empleando conducción eficiente se identificó un aumento en el rendimiento del 15 % y 20 % en pruebas de laboratorio y ruta respectivamente

Factores de riesgo en construcción de edificaciones en el Valle de Aburrá

Un grupo de investigación en higiene y gestión ambiental del Politécnico Colombiano Jaime Isaza Cadavid, realizó un estudio para analizar el panorama de riesgos de 49 obras de construcción seleccionadas estadísticamente, estas están ubicadas en 10 municipios del área metropolitana del Valle de Aburra (Colombia) conformado por : Medellín, Sabaneta, Bello, Envigado, Itagüí, Caldas, La Estrella, Copacabana, Girardota y Barbosa, atreves del estudio de las condiciones de seguridad, donde el grupo aplicó métodos de ponderación, estrada y puerta con el fin de elaborar un panorama de riesgos detallado y preciso de las obras. La investigación arrojó información muy específica sobre los riesgos prioritarios en las obras de construcción, donde se encontró que el trabajo con mayor riesgo realizado es el trabajo en alturas con un valor del 84% presentado en las obras de construcción, de igual manera resaltan la priorización de los riesgos dado su alto nivel de repercusión o consecuencia. El ruido, los sobreesfuerzos, las temperaturas extremas, los movimientos repetitivos y las caídas de alturas son los más considerables y los más comunes que se presentan en las obras, por lo que se pretende analizar detalladamente el estudio realizado, con el fin de complementar aspectos relevantes que contribuyan a la investigación aportando información específica, análisis y conclusiones que propendan por la mejora continua en cuanto a los panoramas de riesgo, asociados a las obras de construcción, resaltando importancia que tiene la promoción y prevención de la salud sobre cualquier actividad realizada en las empresas de construcción.Universidad Libre Seccional Pereira -- Facultad de Ciencias de la Salud, Exactas y Naturales -- Especialización en Seguridad y Salud en el Trabajo, Gerencia y Control de RiesgosA research group in hygiene and environmental management of the Colombian Polytechnic Jaime Isaza Cadavid, carried out a study to analyze the risk panorama of 49 statistically selected construction works, these are located in 10 municipalities of the Valle de Aburra metropolitan area (Colombia) formed by: Medellín, Sabaneta, Bello, Envigado, Itagüí, Caldas, La Estrella, Copacabana, Girardota and Barbosa, through the study of security conditions, where the group applied weighting, road and door methods in order to develop a panorama of detailed and precise risks of the works. The investigation yielded very specific information on the priority risks in construction works, where it was found that the work with the highest risk performed is work at heights with a value of 84% presented in construction works, in the same way they highlight the prioritization of the risks given their high level of repercussion or consequence. Noise, overexertion, extreme temperatures, repetitive movements and falls from heights are the most considerable and the common that occurs during the works, so it is intended to analyze in detail the study carried out, in order to complement aspects that contribute to the investigation by providing specific information, analysis and conclusions that encourage continuous improvement in terms of risk scenarios associated with construction works, highlighting the importance of health promotion and prevention on any activity carried out in construction companies

ON SAMPLING BASED METHODS FOR THE DUBINS TRAVELING SALESMAN PROBLEM WITH NEIGHBORHOODS

In this paper, we address the problem of path planning to visit a set of regions by Dubins vehicle, which is also known as the Dubins Traveling Salesman Problem Neighborhoods (DTSPN). We propose a modification of the existing sampling-based approach to determine increasing number of samples per goal region and thus improve the solution quality if a more computational time is available. The proposed modification of the sampling-based algorithm has been compared with performance of existing approaches for the DTSPN and results of the quality of the found solutions and the required computational time are presented in the paper

Sedimentación del Río Magdalena

Transporte de sedimentos del río Magdalena (desembocadura y plataforma somera): Distribución, variación y factores que controlan la dinámica sedimentari