Mercado spot de energía y modelo alternativo para la fijación de un precio eficiente

La resolución CREG 051 de 2009 es la última resolución vigente sobre el despacho ideal del MEM (Mercado de energía mayorista), además del cálculo del precio de bolsa de energía -- Esta metodología indica que la remuneración de los recursos térmicos en pruebas se realiza a un precio superior al precio marginal del sistema, lo cual genera incrementos en el precio de bolsa del mercado spot -- Se plantea una metodología alternativa para la remuneración de esta generación en pruebas, con el fin de generar los incentivos adecuados y obtener precios del mercado eficiente

Memoria de las instalaciones específicas de una nave industrial dedicada a la construcción y montaje industrial

L'objecte del projecte se centra en una nau industrial, propietat de MIVI S.A., ubicada al municipi de Vilanova i la Geltrú, província de Barcelona, al polígon industrial Masia d'en Barreres, concretament al carrer Torre de l'Onclet s/n. Es proveirà a la nau, dedicada principalment a la construcció i muntatge industrial, amb les instal•lacions necessàries d'electricitat, il•luminació general, ventilació i elements de lluita contra incendis, així com l'elaboració d'un pla d'emergència i evacuació. En els diferents apartats del projecte s'estudien les necessitats específiques i es donaran a conèixer les solucions que s'han considerat més adequades, fonamentades en càlculs i el compliment de normatives. Respecte als aspectes econòmics s'optara per les solucions menys costoses, però que permetin integrar en les instal•lacions elements segurs, de fàcil manteniment, d'amortització ràpida i susceptible d'ampliar, de manera que futures remodelacions o ampliacions no suposin noves inversions importants

A NARRATIVA PÓS-COLONIAL E LINGUAGEM COMO MATÉRIA ESTÉTICA EM O ABRAÇO DA SERPENTE DE CIRO GUERRA

The text analyzes the characteristics of colonial structures: race, ethnicity and loss of innocence, in the film by the Colombian director Ciro Guerra, Embrace of the Serpent (2015). For this, a dialogue is created with theoretical ideas from Fanon, Quijano, Shohat and Stam. This film is considered a critical postcolonial film.DOI: https://doi.org/10.33571//revistaluciernaga.v11n21a3O texto analisa as características das estruturas coloniais: raça e etnia, perda de inocência, no filme O Abraço da Cobra (2015) do diretor colombiano Ciro Guerra. Para isso, um diálogo será criado com idéias teóricas de Fanon, Quijano, Shohat e Stam e isso nos permitirá considerar este filme como um filme pós-colonial crítico

Using discrete choice experiments for environmental valuation

This paper provides with a review of the state of the art of environmental valuation with discrete choice experiments (DCE). The growing body of literature on this field serves to emphasise the increasing role that DCE are playing in environmental decision making in the last decade. The paper attempts to cover the full process of undertaking a choice experiment, including survey and experimental design, econometric analysis of choice data and welfare analysis. The research on this field is found to be intense, although many challenges are put forward (e.g. choice task complexity and cognitive effort, experimental design, endogeneity or model uncertainty). Reviewing the state of the art of DCE serves to draw attention to the main challenges that this methodological approach will need to overcome in the coming years and to identify the frontiers in discrete choice analysis.The author acknowledges the financial support from the Department of Environment of the Basque Government through IHOBE, S.A. and from the Department of Education of the Basque Government through grant IT-334-07 (UPV/EHU Econometrics Research Group)

Comparing the performance of different approaches to deal with attribute non-attendance in discrete choice experiments: a simulation experiment

There is a growing body of literature acknowledging that respondents to DCE often use simplifying strategies, like ignoring one or several attributes to provide with their choices. Two main approaches have appeared to analyse the impact of attribute non-attendance on welfare estimates: the stated non-attendance (SNA) approach and the analytical non-attendance (ANA) approach. Using simulation experiments, this paper investigates the results and reliability of the approaches developed in the recent years in order to deal with attribute non-attendance. The simulation results indicate that the treatments so far proposed are not in all cases suitable. In the absence of correlated errors, the SNA approach seems to provide with unbiased welfare estimates but the ANA approach fails to do so. On the other hand, in the presence of correlated errors, none of the approaches seems to provide with unbiased WTP estimates in all cases.simulation, discrete choice experiments, willingness to pay, attribute non attendance

The Holographic Life of the eta'

In the string holographic dual of large-N_c QCD with N_f flavours of Kruczenski et al, the eta' meson is massless at infinite N_c and dual to a collective fluctuation of N_f D6-brane probes in a supergravity background. Here we identify the string diagrams responsible for the generation of a mass of order N_f/N_c, consistent with the Witten-Veneziano formula, and show that the supregravity limit of these diagrams corresponds to mixings with pseudoscalar glueballs. We argue that the dependence on the theta-angle in the supergravity description occurs only through the combination theta + 2 \sqrt{N_f} eta' / f_pi, as dictated by the U(1) anomaly. We provide a quantitative test by computing the linear term in the eta' potential in two independent ways, with perfect agreement.Comment: 1+26 pages, 8 figures; V4: Appendix added, version published in JHE

Using discrete choice experiments for environmental valuation

This paper provides with a review of the state of the art of environmental valuation with discrete choice experiments (DCE). The growing body of literature on this field serves to emphasise the increasing role that DCE are playing in environmental decision making in the last decade. The paper attempts to cover the full process of undertaking a choice experiment, including survey and experimental design, econometric analysis of choice data and welfare analysis. The research on this field is found to be intense, although many challenges are put forward (e.g. choice task complexity and cognitive effort, experimental design, endogeneity or model uncertainty). Reviewing the state of the art of DCE serves to draw attention to the main challenges that this methodological approach will need to overcome in the coming years and to identify the frontiers in discrete choice analysis.choice modelling, survey, discrete choice experiments, environmental valuation

Selecting random parameters in discrete choice experiment for environmental valuation: A simulation experiment

This paper examines the various tests commonly used to select random parameters in choice modelling. The most common procedures for selecting random parameters are: the Lagrange Multiplier test as proposed by McFadden and Train (2000), the t-statistic of the deviation of the random parameter and the log-likelihood ratio test. The identification of random parameters in other words the recognition of preference heterogeneity among population is based on the fact that an individual makes a choice depending on her/his: tastes, perceptions and experiences. A simulation experiment was carried out based on a real choice experiment and the results indicated that the power of these three tests depends importantly on the spread and type of the tested parameter distribution.choice experiment, simulation, preference heterogeneity, random parameter logit, tests for selecting random parameters