Electricity systems are currently expanding towards more efficient forms of production. Several expansionary strategies are being developed to cover increases in future electricity demand. Goals such as reducing greenhouse gas emissions, increasing the efficiency of operations, and achieving more equitable participation of the actors in charge of the investments are set. Following this premise, this paper presents a multi-objective model that helps in decision-making on the problem of expanding electricity generation. The model considers more realistic views than other works in the literature. The vast majority of the stakeholders in the studied field are satisfied with the present proposal. Investment costs, greenhouse emissions, and investment contribution rates are considered. Also, the actual procedures of the generation and transmission stages are rigorously studied. This means obtaining solutions that are closer to reality. The case study is the electricity system of Argentina. The results obtained indicate that the recommended solutions are the most convenient from all points of view. They constitute a mix of the generation with renewable and non-renewable technologies. The case study reveals emission reductions of up to 25% and it can be achieved that the most vulnerable social groups do not have to finance future system expansions.

This study aimed to develop a conceptual model of the mediating role of organizational commitment and organizational citizenship behavior on the influence of organizational justice on the performance of civil servants in the Pekanbaru Municipal Government. The sample was 147 civil servants in the Pekanbaru Municipal Government. The sampling was done using systematic sampling while the data processing was done using Structural Equation Modeling Partial Least Square (SEM PLS). The findings in this study are organizational justice has a positive influence on the performance of civil servants in the Pekanbaru Municipal Government, organizational citizenship behavior mediates the influence of organizational justice on the performance of civil servants in the Pekanbaru Municipal Government, organizational commitment does not mediate the influence of organizational justice on the performance of civil servants in the Pekanbaru Municipal Government. The most effective pathway in influencing employee performance is the mediating pathway of organizational citizenship behavior on the influence of organizational justice on the performance of civil servants.

This study aimed to develop a conceptual model of the role of differentiation strategy and organizational citizenship behavior in mediating the effect of transformational leadership on the performance of private high schools in Pekanbaru. The sample was 140 principals and vice-principals of private high schools in Pekanbaru. The data obtained were processed using Structural Equation Modeling Partial Least Square (SEM PLS). The findings in this study are that transformational leadership has a positive effect on the performance of private high schools in Pekanbaru, differentiation strategy and organizational citizenship behavior mediate the effect of transformational leadership on the performance of private high schools in Pekanbaru. The most effective pathway to affect the performance of private high schools is the mediating pathway of organizational citizenship behavior on the effect of transformational leadership on the performance of private high schools.