In medically treated patients with severe global left ventricular dysfunction early after acute uncomplicated myocardial infarction, the presence of myocardial viability identified as inotropic reserve after low-dose dobutamine is associated with a higher probability of survival. The higher the number of segments showing improvement of function, the better the impact is of myocardial viability on survival. The presence of inducible ischemia in this set of patients is the best predictor of cardiac death.

During dobutamine stress, echocardiographic recognition of myocardial viability is more prognostically important than echocardiographic recognition of myocardial ischemia for predicting unstable angina, whereas WMSI at peak stress was the best predictor of cardiac-related death. Different events can be recognized with different efficiency by various stress echocardiographic variables.

To date, research examining the socio-spatial effects of smart city technologies have charted how they are reconfiguring the production of space, spatiality and mobility, and how urban space is governed, but have paid little attention to how the temporality of cities is being reshaped by systems and infrastructure that capture, process and act on real-time data. In this article, we map out the ways in which city-scale Internet of Things infrastructures, and their associated networks of sensors, meters, transponders, actuators and algorithms, are used to measure, monitor and regulate the polymorphic temporal rhythms of urban life. Drawing on Lefebvre, and subsequent research, we employ rhythmanalysis in conjunction with Miyazaki's notion of 'algorhythm' and nascent work on algorithmic governance, to develop a concept of 'algorhythmic governance'. We then use this framing to make sense of two empirical case studies: a traffic management system and sound monitoring and modelling. Our analysis reveals: (1) how smart city technologies computationally perform rhythmanalysis and undertake rhythm-making that intervenes in space-time processes; (2) distinct forms of algorhythmic governance, varying on the basis of adaptiveness, immediacy of action, and whether humans are in-, on-, or, off-the-loop;(3) and a number of factors that shape how algorhythmic governance works in practice.

While there is a relatively extensive literature concerning the nature of smart cities in general, the roles of corporate actors in their production and the development and deployment of specific smart city technologies, to date there have been relatively few studies that have examined the situated practices by which the smart city unfolds in specific places. In this paper, we draw on three sets of interviews ( n = 114) and ethnographic fieldwork to chart the smart city ecosystem in Dublin, Ireland. We examine how the four city authorities have actively collaborated to frame a disparate and uncoordinated set of information and communication technology-led initiatives, what Dourish terms the ‘accidental smart city’, into an articulated vision of Dublin as a smart city. In particular, we focus on the work of ‘Smart Dublin’, a shared unit established to coordinate, manage and promote Dublin’s smart city initiatives and to drive new economic development opportunities centred on corporate interventions into urban management and living. Our analysis highlights the value of undertaking a holistic mapping of a smart city in formation, and the role of political and administrative geographies and specialist smart city units in shaping that formation.

We argue that the ideas, ideals and the rapid proliferation of smart city rhetoric and initiatives globally have been facilitated and promoted by three inter-related communities: (i) `urban technocrats'; (ii) a smart cities `epistemic community'; (iii) a wider `advocacy coalition'. We examine their roles and the multiscale formation, and why despite their influence they encounter a `last mile problem'; that is, smart city initiatives are yet to become fully mainstreamed. We illustrate this last mile problem through a discussion of plans to introduce smart lighting in Dublin.