Renewable, ethical? Assessing the energy justice potential of renewable electricity

Energy justice is increasingly being used as a framework to conceptualize the impacts of energy decision making in more holistic ways and to consider the social implications in terms of existing ethical values. Similarly, renewable energy technologies are increasingly being promoted for their environmental and social benefits. However, little work has been done to systematically examine the extent to which, in what ways and in what contexts, renewable energy technologies can contribute to achieving energy justice. This paper assesses the potential of renewable electricity technologies to address energy justice in various global contexts via a systematic review of existing studies analyzed in terms of the principles and dimensions of energy justice. Based on publications including peer reviewed academic literature, books, and in some cases reports by government or international organizations, we assess renewable electricity technologies in both grid integrated and off-grid use contexts. We conduct our investigation through the rubric of the affirmative and prohibitive principles of energy justice and in terms of its temporal, geographic, socio-political, economic, and technological dimensions. Renewable electricity technology development has and continue to have different impacts in different social contexts, and by considering the different impacts explicitly across global contexts, including differences between rural and urban contexts, this paper contributes to identifying and understanding how, in what ways, and in what particular conditions and circumstances renewable electricity technologies may correspond with or work to promote energy justice

Feynman integral treatment of the Bargmann potential

PTHA method based on path integral formulation is given for obtaining exact solution of the s states for the Bargmann potential where β and k are parameters. The exact energy spectrum and the normalised s-state eigenfunctions are obtained from the poles of the Green function and their residues, respectively. The results are compared with their of Schrödinger formalism, special cases are also discussed

A new model of the Calogero type

PTHWe propose a new integrable Hamiltonian describing two interacting particles in a harmonic mean field in D = 1 dimensional space. This model is found to be both supersymmetric and shape invariant. We show that for a given domain of the coupling constant the irregular solution is acceptable and contributes to the spectrum. We also discuss two inequalities of the Bertlmann–Martin type, which link the ground state mean-square radius to the lowest excitation energy

Fast multilevel thresholding for image segmentation through a multiphase level set method

International audienc

Non–interacting fuzzy control system design for distillation columns

This paper proposes a fuzzy multiloop control design for a distillation column. The interaction that occurs between the strategic distillation column variables, which represent a major constraint to construct the rules base when the fuzzy multivariable control of the distillation control is considered, are reduced by introducing a compensator in cascade with the distillation column. The introduced compensator is designed using an interaction analysis method. Thus, a complete fuzzy rule base is generated for each loop independently without domain experts. The main advantage of the proposed fuzzy multiloop strategy is that the determination of the rule base is simplified and facilitated; besides a weak level of interaction and the control stability are guaranteed. Consequently, in comparison with the conventional multiloop control based on classical PI controllers, the fuzzy multiloop control achieves better control performanc

Generation of (F2+)AH^{+}_{2})_{\rm AH} Centres in Sodium Ion Doped KCl:CO32−\mathsf{^{2-}_{3}}

We demonstrate that (F$^{+}_{2}$)$_{\rm AH}$ centres of KCl may be obtained from crystals doped with K$_{2}$CO$_{3}$ and NaCl, grown by the Czochralski method in open atmosphere. The optical properties of (F$^{+}_{2}$)$_{\rm AH}$ centres thus produced are exactly the same as those of (F$^{+}_{2}$)$_{\rm AH}$ centres prepared by the usual technique, which involves superoxide doping and a controlled atmosphere.Nous montrons que les centres (F$^{+}_{2}$)$_{\rm AH}$ de KCl peuvent être obtenus à partir de cristaux dopés par K$_{2}$CO$_{3}$ et NaCl, fabriqués par la méthode de Czochralski à l'air libre. Les propriétés optiques des centres (F$^{+}_{2}$)$_{\rm AH}$ ainsi produits sont exactement les mêmes que celles des centres (F$^{+}_{2}$)$_{\rm AH}$ préparés par la technique habituelle, qui comporte le dopage par un superoxyde et l'emploi d'une atmosphère contrôlée