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It is generally well-accepted in innovation research that consumer/user adoption of an invention is key to its diffusion. Despite general awareness about the importance of the adopter perspective in innovation diffusion, the majority of the literature on social innovation, hardly addresses the adoption-side of innovation diffusion. Social innovation potential therefore often remains under-utilized. In this paper the result of a review of 468 (predominantly English language) publications on social innovation is provided (based on Web of Science), searching for the adopter perspective in social innovation research. The findings show that, although some hints at the role of adopters, and their environment, can be found in the literature, attention for the willingness and capacities of potential adopters is meager in peer-reviewed publications. Propelled by high policy expectations, at the national as well as European level, scientific interest in social innovation has been booming over the last decade. Without a proper understanding of social innovation diffusion dynamics and adopter willingness and their interactions with existing institutions, expectations may not be fulfilled and specific social innovation policies that have been emerging across Europe may not be able to achieve intended policy goals. [ABSTRACT FROM AUTHOR]

The relationship between energy and capital is one of the most important aspects of modern economic growth. Machines need energy to produce all the goods we enjoy; energy would be far less useful for humankind in absence of machines. However, the great majority of the economic models do not take into account the elasticities of substitution (or complementaries) between these two main variables. Actually, energy is absent in many growth models and discussions on diverging economic development paths. We approach this relevant issue from a new perspective: energy and capital relations during 100 years. We use the latest estimations of capital stock (machinery and equipment) and energy consumption for Latin America and compare them with those of Western Europe. The energy-capital ratio (how much energy is used per unit of capital) could be a predictor of economic growth, thus providing stylised facts about the timing and causes of the different modernisation patterns of these regions and showing us some answers on the long-run relationship between energy consumption and capital accumulation. [ABSTRACT FROM AUTHOR]