Search results

The ex-post literature, which evaluates the real impact of renewable generation, is scarce. Most studies are simulations and therefore are not based on real data. This study aims to further this goal using a unique database of the Portuguese spot market, where there are powerful incentives for renewable electricity.

This paper analyses ex-post the impact of energy produced in special regime on the wholesale hourly spot market prices of Portuguese electricity during the period 2009–2016. This paper uses standard, two stage least squares and generalized method of moments multivariate regressions and other energy econometrics techniques.

It is found that special regime generation has a negative impact on the wholesale price. This impact is higher than that found in other markets. This paper also concludes that using special regime generation to supply the future growth of demand will decrease wholesale electricity spot prices more intensively than using other technologies.

This paper uses a unique database based on ex-post for the Portuguese spot market. The Portuguese case is particularly interesting, not only because of its strong incentives policy on renewable energy but also because its spot market is interconnected with the Spanish market. This paper contributes to the debate about the sustainability of current renewable electricity support schemes. The decreasing trend in electricity prices, with the introduction of new renewable capacity, can be incompatible with the required payments for non-renewable producers. This paper also shows that even if the price reduction on spot markets is transferred to final consumers, given that it is relatively small (8% spot price which represents 45% of the final price), compared with the cost of incentives (35% of the final price), consumers probably will not be able to support a new investment pipeline with a similar framework.

The purpose of this paper is to interpret the use of accounting information relating to the House of Correction, a public safety institution established in Rio de Janeiro for the control of workers under a tutelage system (1831–1864). The aim of the House of Correction was to develop a disciplined workforce of former slaves and other “Free Africans”. Various control and information procedures were put in place to monitor its achievement of this goal.

This study is based on historical archival research, mainly conducted at the National Archive of Rio de Janeiro and at the Brazilian National Library. The study uses Althusser’s ideology concept and the Marxist concept of reproduction of labour to show how accounting information enabled the administrator of the House of Correction to exercise control over the “Free Africans” consistent with the ideologies of the period and place.

The authors find that the House of Correction pursued a policy of ensuring “Free Africans” were docile, obedient and familiar with State ideology.

The research is based on a single case study and it shows the need for both comparative and interdisciplinary analysis in order to increase an understanding of the use of accounting information in ancient prison contexts, as well as in contemporary situations.

This paper extends our knowledge of the use of accounting for the control of workers, who were either captive or repressed due to their ethnical differences; and it shows how ideology can be imposed through the use of accounting information. The authors extend theory by applying the Marxist and Althusserian concept of reproduction of labour to the case of “Free Africans”.

Gazelle companies are characterized by rapid growth in a short time. Identifying the determinants of this exponential expansion is important as these firms have a significant impact on the economy. They generate increased employment and investment by investors interested in new opportunities. Previous studies have failed to reach a consensus about what fosters high growth in gazelle companies as each firm’s geographical, political and economic context is different. The present research uses cognitive mapping and interpretive structural modeling (ISM) to overcome the limitations of prior investigations and identify factors that can potentially accelerate growth in gazelle companies.

Two sessions were held with an expert panel with knowledge about and experience with these firms. In the first session, data were collected to create a group cognitive map, while the second meeting comprised ISM-based analyses of the high-growth determinants identified and the causal relationships between them. A final consolidation session was held to discuss the results with two members of the Committee for Central Region Coordination and Development (i.e. Comissão de Coordenação e Desenvolvimento Regional do Centro – a public entity that grants gazelle awards in Portugal).

The analysis system created was tested, and the results demonstrate that the dual methodology used can increase our understanding of the dynamics of high-growth determinants and lead to more informed and potentially better evaluations of gazelle companies. Indeed, once high-growth determinants in gazelle companies are understood, this information can help other firms implement the same business model to achieve similarly rapid growth. The strengths and shortcomings of this new structured analysis model are also analyzed.

The authors know of no prior work reporting the integrated use of cognitive mapping and ISM in this study context.