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This study explores the potential impact of smart urban technologies used in smart city projects on three dimensions of urban sustainability (economic, environmental and social). Although the literature notes that smart urban technologies and their capabilities are potential saviours when it comes to urban and sustainability challenges in cities, there is a lack of studies exploring the impact of smart urban technologies on urban sustainability. Thus, we address this literature gap by conducting structural topic modelling on smart city projects retrieved from the Smart Territory call for projects. In these projects, city managers' report extensively on how smart urban technologies can support urban sustainability. Our results show nine groups of smart urban technologies that will support at least two urban sustainability dimensions. Smart mobility systems can support all three dimensions of urban sustainability. Technology benefits will be realised by smart urban technology capabilities and through the involvement of the city's community in the use of technology. • City managers may adopt smart urban technologies to achieve urban sustainability goals. • The results link different urban sustainability impacts to different smart urban technologies. • This paper provides a list of smart urban technologies that will support at least two urban sustainability dimensions. • Results provide a basis to measure smart urban technologies' impacts through different sustainability indicators. [ABSTRACT FROM AUTHOR]

The literature on Smart Cities lacks of research on how actors understand and appropriate the Smart City. This paper questions in an innovative way their appropriations of the phenomenon. Smart City is considered as an instrument, following the theory of Lascoumes and Le Galès (2007). Is the Smart City a functional instrument: a kind of evidence and a pragmatic solution at disposal or a public policy instrument: not neutral, provoking debates and influencing policies? An empirical analysis is carried on based on a survey among 193 Belgian actors active in the domain. The results show that the Instrument theory is relevant to analyse the actors' appropriation, which do not follow a homogeneous trend. In fact, each actor follows his own logics which will be interesting to study. • The Instrument theory is relevant to study the Smart City appropriation by actors. • Statistical treatments based on a study of 193 Belgian actors confirm this approach. • Actor's appropriation follows a partition between functional and public policy instrument. • Actors do not fit into one or the other category of instrument in a monolithic way. [ABSTRACT FROM AUTHOR]