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Presents the introductory welcome message from the conference proceedings. May include the conference officers' congratulations to all involved with the conference event and publication of the proceedings record.
In this paper we describe nibble.io, an offline information kiosk that has been designed for deployment within the rural communities of developing countries. We show how a pervasive technology such as sound can be used as a method of interaction between low-end feature phones and information kiosks built using standard PC monitors. By connecting an embedded computer to a monitor we show how we are...
Digital video is responsible for the largest proportion of traffic on the Internet today – upto ~70%. However, very little published research has examined the energy impact of this growing traffic type on a global scale (on client systems, servers and in the network). We summarise results and lessons learned from our measurement-based experiments on the energy use of digital video. By providing users...
In this paper we present our approach to create an end-to-end software platform to enable the creation of meaningful and systematic, cross-dataset performance evaluations and benchmarks of Non-Intrusive Load Monitoring technology. We specifically propose a new file format to represent public datasets, a software framework to implement algorithms and metrics as well as the application of ceiling analysis...
This paper presents our efforts in understanding the long-term effects of eco-feedback devices. Our work argues that lack of long term in the wild studies is a missed opportunity to understand how these devices are used after the novelty wears off. We build on previous work that showed a significant decrease in user awareness after a short period with a relapse in consumption, with the presented studies...
This paper presents EnerSpectrum a standard wall electricity socket redesigned to present how much of the electricity being consumed is sourced from a renewable energy source. We build on studies that report an increase in consumer energy awareness and literacy when presented with the source of their electricity. The prototype was evaluated by 10 users using interviews, which found the concept interesting...
Wireless data transmission over sensor networks is known to consume a significant share of energy compared to data computation on the device itself. Thus data compression techniques have been used to reduce the data size at the cost of extra processing time on the device. This paper investigates the energy consumption trade-off of XML compression and data communication on embedded devices with low-bandwidth...
Sustainability has been an important topic in UK schools for some time, most notably since the Sustainable School Strategy was proposed by the UK Department for Education (DFES) in 2006. However, as smart city technologies emerge and show real promise in contributing to a more sustainable future, it is becoming apparent that new skills for working with the big urban data sets that drive these innovations...
We consider an interconnected distributed computer system with multiple computation centres (CC) that operate with energy harvesting to improve sustainability. The intermittent energy harvesting is matched with steady demand from the CCs using energy storage (ES), e.g. batteries. Based on energy leakage from batteries, and power losses over transmission lines, we examine whether a centralised or distributed...
We are entering a key time period for home energy. While ubiquitous computing takes an increasing space in our daily life, emerging energy technologies including local generation and electric vehicle are leaving the stage of pioneer's users to become more common. This research highlights the potential of new energy behavior supported by digital tools in the context of domestic solar electricity generation.
Nowadays, Cloud federation is paving the way toward new business scenarios in which it is possible to enforce more flexible energy management strategies. Considering independent Cloud providers, each one is exclusively bound to the specific energy supplier powering its datacenter. The situation radically changes if we consider a federation of cooperating Cloud providers. In such a context, a proper...
In this paper we present and evaluate a semiautomatic labeling prototype to enable the creation of fully labeled energy disaggregation datasets from sub-metered data. Our results advocate in favor of our approach and show that it is possible to extract individual appliance transitions with considerable precision, as long as the individual appliance information is present in the sub-metered data, and...
The growth of power consumption in ICT infrastructures emphasizes the importance of monitoring their usage and finding available room for improvement. Users can choose among several existing tools to determine the energy profile of a running application in order to provide more sustainable software. We conducted a field study in the SURFsara data center and we experimented with the tools available,...
The increasing integration of new technologies for power generation into the smart grid systems calls for novel demand response (DR) algorithms, which schedule the appliances to minimize cost and maximize comfort for the users. Traditionally, the formulations of the DR problem consider unidirectional energy flow from the power grid (energy supplier) to the user in a residential building (energy consumer)...
This paper presents the design, implementation and evaluation of an eco-feedback system capable of providing detailed household consumption information and also real-time production breakdown per energy source. We build on recent studies reporting an increased awareness generated by ecofeedback systems that also integrate micro-production information, taking advantage of a closed grid production network...
Resource on Demand in 802.11 Wireless LANs is receiving an increasing attention, with its feasibility already proved in practice and some initial analytical models available. However, while these models have assumed that access points (APs) start up in zero time, experimentation has showed that this is hardly the case. In this work, we provide a new model to account for this time in the simple case...
Nowadays, the increasing global awareness of the importance of energy saving in everyday life acts as a stimulus to provide innovative ICT solutions for sustainability. In this scenario, the growing interest in smart homes has been driven both by socioeconomic and technological expectations. One of the key aspects of being smart is the efficiency of the urban apparatus, which includes, among others,...
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