Search

In this paper, a novel distributed control strategy addressing a (feasible) psycho-social-physical welfare problem in islanded Direct Current (DC) smart grids is proposed. Firstly, we formulate a (convex) optimization problem that allows prosumers to share current with each other, taking into account the technical and physical aspects and constraints of the grid (e.g., stability, safety), as well as psycho-social factors (i.e., prosumers’ personal values). Secondly, we design a controller whose (unforced) dynamics represent the continuous time primal-dual dynamics of the considered optimization problem. Thirdly, a passive interconnection between the physical grid and the controller is presented. Global asymptotic convergence of the closed-loop system to the desired steady-state is proved and simulations based on collected data on psycho-social aspects illustrate and confirm the theoretical results. [ABSTRACT FROM AUTHOR]

Environmental campaigns often promote energy conservation by appealing to economic (for example, lower electricity bills) rather than biospheric concerns (for example, reduced carbon emissions), assuming that people are primarily motivated by economic self-interest. However, people also care about maintaining a favourable view of themselves (they want to maintain a 'positive self-concept'), and may prefer to see themselves as 'green' rather than 'greedy'. Consequently, people may find economic appeals less attractive than biospheric appeals. Across two studies, participants indicated feeling better about biospheric ('Want to protect the environment? Check your car's tire pressure') than economic ('Want to save money? Check your car's tire pressure') tyre-check appeals. In a field experiment, we found that an economic tyre-check appeal ('Do you care about your finances? Get a free tire check') elicited significantly less compliance than parallel biospheric and neutral appeals. Together, these studies discredit the conventional wisdom that appealing to economic self-interest is the best way to secure behaviour change. At least in some cases, our studies suggest, this strategy is not effective. [ABSTRACT FROM AUTHOR]

Various scholars argue that egoistic, altruistic, and biospheric value orientations are important for understanding environmental beliefs and behavior. However, little empirical evidence has been provided for the distinction between altruistic and biospheric values. This study examines whether this distinction is valid across different countries (i.e., Austria, Czech Republic, Italy, the Netherlands, and Sweden) by using a new value instrument. Relationships between these value orientations and behavior-specific beliefs (i.e., awareness of environmental consequences and personal norms) are investigated to further examine the validity of the value instrument. Results provide support for the generalization of the three-way distinction. Furthermore, value orientations were related to behavior-specific beliefs in all countries. The authors conclude that the distinction between the three value orientations is valid and useful for examining environmentally relevant behavior. [ABSTRACT FROM AUTHOR]

Abstract: This study examines relationships between value orientations and perceived quality of life-changes when the cost of car use is doubled. An Internet based survey shows that people expect only minor decreases in overall quality of life when costs of car use increase. People with a strong egoistic value orientation evaluate quality of life consequences of the policy more pessimistically than people who have a weak egoistic value orientation. On the other hand, people with strong altruistic or biospheric value orientations are more optimistic compared to those with weak altruistic or biospheric value orientations. [Copyright &y& Elsevier]