Anatomy of three-body decay III. Energy distributions

We address the problem of calculating momentum distributions of particles emerging from the three-body decay of a many-body resonance. We show that these distributions are determined by the asymptotics of the coordinate-space complex-energy wave-function of the resonance. We use the hyperspherical adiabatic expansion method where all lengths are proportional to the hyperradius. The structures of the resonances are related to different decay mechanisms. For direct decay all inter-particle distances increase proportional to the hyperradius at intermediate and large distances. Sequential three-body decay proceeds via spatially confined quasi-stationary two-body configurations. Then two particles remain close while the third moves away. The wave function may contain mixtures which produce coherence effects at small distances, but the energy distributions can still be added incoherently. Two-neutron halos are discussed in details and illustrated by the $2^+$ resonance in $^{6}$He. The dynamic evolution of the decay process is discussed.Comment: 30 pages, 8 figures, to be published in Nuclear Physics

Economic Implications of DSO-TSO Coordination Schemes at a System Level and for Market Actors in case of Flexibility or Traditional Grid-based Solution

This paper proposes a methodology to evaluate the economic implication of the use of flexibility to solve both joint DSO-TSO and local DSO-specific congestion management needs. The presented methodology enables evaluating the economic implications at a system level and per market actor according to the selected DSO-TSO coordination scheme and given flexibility needs. Firstly, several DSO-TSO coordination schemes are presented to solve joint needs, in which market access to flexible resources at the distribution grid is enabled to a greater or lesser extent. Secondly, the use of flexibility is compared to traditional grid solutions (i.e., grid reinforcement, temporary commissioning services) to enable the DSO to make cost-efficient grid decisions in the short and medium term. Finally, the economic impact on flexible service providers at the distribution level is carefully presented. This methodology seeks to support energy policies and other regulatory decisions.This work has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement nº 824414. TECNALIA is a “CERVERA Technology Centre of Excellence” recognized by the Ministry of Science and Innovatio

How to link agricultural productivity, water availability and water demand in a risk context?

The importance of water scarcity in irrigated agriculture in Spain provides the rationale for this paper, which analyses and evaluates the risk of water shortage on the economic result of this kind of agriculture. The main objective is to monitor this risk on a real-time basis. For this aim, we first estimated a number of regression models that explain irrigated agricultural productivity based on crop price indices, a time trend and water availability. These models, which correct for auto-correlation, yield good explanatory power. Second we carried out ex ante simulations of agricultural productivity using fitted distribution functions of water balance. The risk model framework provides the basis for a real time drought management system through a variety of distribution functions of expected economic results, which can be revised on a monthly basis before the beginning of the irrigation season. The results of the simulation show how this kind of risk model can be used to anticipate the effects of droughts and complement the hydrological models used to manage water storage in years of scarcity. Different risk profiles are identified. For example, in Genil-Cabra we found that the resilience of the system after a drought period is very high, whereas in La Plana de Castellón the risk of irrigation area abandonment is increasing year by year. In Genil-Cabra the estimated losses were 60 million euros in 2007. The models were applied to some of the most agriculturally relevant irrigation districts in Spain

Disentangling the social, macro and micro-economic effects of agricultural droughts: An application to Spanish irrigated agriculture

Droughts affect irrigated agricultural production, reducing economic output and creating social stress. The economic consequences of droughts begin at the farm level, reaching the macro level along the production chain value. To the extent that crop markets adjust to the supply shocks and because droughts do not affect all sectors at the same time and with the same severity, it is instructive to conduct economic evaluations of drought effects at both micro- and macro-economic levels. The objective of this paper is to estimate the impact of water availability variations on the crops’ market values, the total value added of the agricultural sector and farm employment. We run regression models for these three economic variables and 14 provinces in Spain, comprising more than 50% of the Spanish irrigated area. Results show that the macro economic variables are only sensitive to water availability in the provinces where aridity and water stress are more severe. The value of the harvests obtained in irrigated land is largely explained by water availability. The time trend explains the largest percentage of variance of the three economic variables, including micro and macro

Economic analysis of drought risks: an application to irrigated agriculture in Spain

Abstract This paper describes a two-part methodology for managing the risk posed by water supply variability to irrigated agriculture. First, an econometric model is used to explain the variation in the production value of irrigated agriculture. The explanatory variables include an index of irrigation water availability (surface storage levels), a price index representative of the crops grown in each geographical unit, and a time variable. The model corrects for autocorrelation and it is applied to 16 representative Spanish provinces in terms of irrigated agriculture. In the second part, the fitted models are used for the economic evaluation of drought risk. In flow variability in the hydrological system servicing each province is used to perform ex-ante evaluations of economic output for the upcoming irrigation season. The model?s error and the probability distribution functions (PDFs) of the reservoirs? storage variations are used to generate Monte Carlo (Latin Hypercube) simulations of agricultural output 7 and 3 months prior to the irrigation season. The results of these simulations illustrate the different risk profiles of each management unit, which depend on farm productivity and on the probability distribution function of water in flow to reservoirs. The potential for ex-ante drought impact assessments is demonstrated. By complementing hydrological models, this method can assist water managers and decisionmakers in managing reservoirs

English Communication for International Business II

Llibre i audioENGLISH COMMUNICATION FOR INTERNATIONAL BUSINESS II is the second book of a collection oftwo addressed to those students involved in learning English to communicate in business contexts. As the previous one, the book is conceived as self-learning material which includes the keys to most activities although the support ofthe instructor in the classroom becomes necessary for some of them. This book is content-based, trying to emphasise the written and oral communicative necessities of the international business world. The book is organised in six units which deal with some types ofbusiness written and oral communication, such as meetings and negotiations, international trade procedures related to Incoterms, packing, delivery and insurance, methods of payment and their corresponding documents, orders, and complaints. All units deal with reading, writing, and listening skills, as well as translation. The CD provided with the book is higWy useful for the listening activities. Speaking and interaction can also be worked in all units although always with the teacher's guidance. Each unit starts with a general explanation of the topic, followed by reading comprehension and vocabulary activities. Along the unit, several specific explanations can be found including examples of the documents and of the written and spoken communicative events involved. Students are then required to produce their own documents and effective pieces of communication. At the end of each unit, two communicative situations have been included, asking students to solve a business problem. After the situations, each unit is provided with references for further reading either in books or in websites. As a complement to the units in both volumes, a series of seventeen case studies have been created. These case studies reproduce real situations in a company, such as launching a new product, hiring a new employee, strategies to sell a product, reacting to claims, negotiating staff reduction, etc

¿Protegidos o indefensos ante la comunicación audiovisual?

Estudio de las últimas resoluciones dictadas por la CNMC referente a sanciones administrativas a diferentes operadores de comunicación audiovisual por la emisión de publicidad encubierta; por la clasificación errónea por edades del contenido y por superación del tiempo de emisión de mensajes publicitarios permitido

Nulidad de la cláusula insertada por Telefónica en sus contratos con consumidores por la que un servicio gratuito pasa a ser oneroso, al considerarse una nueva contratación y no una modificación del contrato ya establecido

Estudio de la sentencia dictada por el Tribunal Supremo, en relación con el cambio, de gratuito a oneroso, de un servicio adicional que ofertaba Telefónica a sus clientes y en la que se exponen los motivos que llevan a  la declaración de este hecho como de abusivo al no quedar constancia de la aceptación inequívoca de los clientes de este servicio

Live lecture screencast recording: a proposal to simplify the tasks associated with content production for video-teaching

Se trata de un resumen (Abstract) de la contribución. El acuerdo de transferencia de copyright del trabajo completo es incompatible con el depósito del mismo en RIUMA.Se describe la implementación inicial de un método simplificado de grabación en directo de sesiones de clase en asignaturas de las Escuelas de Ingeniería de la Universidad de Málaga. La simplificación se logra al incorporar en la actividad diaria del aula ciertas características típicas de la grabación en diferido de mini videos docentes. En una configuración mínima se graba únicamente el audio y el video en pantalla de la clase, evitando los desafíos técnicos y las dificultades que implica la grabación de otros elementos como la pizarra. Esto implica el uso de anotaciones en pantalla en tiempo real para reemplazar completamente las anotaciones en la pizarra.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech. I Plan Propio Integral de Docencia. Universidad de Málaga. Universidad de Málaga. Vicerectorado de Personal Docente e Investigador, Proyectos de Innovación Educativa (PIE 17-018