Mike Hazas's research while affiliated with Uppsala University and other places

Publications (85)

Article
The home has been the subject of investigation in the social sciences and interaction design communities for decades. This has been driven not least by a wish to understand technology, energy demand, and how it might be understood in terms of social practices. In this paper, we reflect on several studies that have sought to capture this relationshi...
Article
Full-text available
The UK government has committed to reducing its carbon emissions to net-zero by 2050. Higher education institutions (HEIs) are high energy users, with the largest proportion of their energy demand for space heating; an area still dominated by carbon-intensive fuels. This research addresses the UK HEI space temperature policy landscape, making direc...
Article
Growing and even excessive use of digital technology has unquestionably fuelled demand for digital devices and online services leading to a wide range of societal and environmental impacts. In sustainability terms, ICT as a whole is estimated to produce up to nearly 4% of global greenhouse gas emissions. As presumed responsible innovators, the HCI...
Article
The past two decades have seen a rise in autonomous robots in households. In particular, robotic vacuum cleaners and lawnmowers have become much more accessible and mainstream and are the two most popular domestic service robots. (Roomba and Landroid are trade names for iRobot's vacuum and WORX's mower, respectively.) As with many smart home techno...
Article
Smart home innovations are both a research topic and an industry reality. In this article, we highlight smart home research from the Proceedings of the ACM Journal on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT) presented at the September 2019 ACM International Joint Conference on Pervasive and Ubiquitous Computing and smart ho...
Article
In recent years, household sustainability has received increasing attention in the field of Human-Computer Interaction. This has largely been driven by the argument that through interaction design, we can create ‘smart homes’ that enable households to be more responsible with precious resources, such as food, water and energy. However, the assumpti...
Conference Paper
Why is it that we can have standards on how to achieve comfort [5] and advanced building control systems to implement these standards, yet water cooler 'discussions' about how hot, cold, or generally uncomfortable it is, seem to form a backbone to modern office life [8]? In the UK, domestic space and water heating alone was approximately 80% of the...
Article
Full-text available
Emissions arising from the production and consumption of food are acknowledged as a major contributor to climate change. From a consumer’s perspective, however, the sustainability of food may have many meanings: it may result from eating less meat, becoming vegetarian, or choosing to buy local or organic food. To explore what food sustainability me...
Conference Paper
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Internet use and online services underpin everyday life, and the resultant energy demand is almost entirely hidden, yet significant and growing: it is anticipated to reach 21% of global electricity demand by 2030 and to eclipse half the greenhouse gas emissions of transportation by 2040. Driving this growth, real-time video streaming ('watching') i...
Article
Reports on the technologies, services, and applications that support today's smart homes.
Article
Education is the second largest consumer of energy in the service sector, however, little research to date has focused on the link between education policy and energy demand. Using a case study, this paper explores the role of invisible energy policies in Higher Education (HE). We make a distinctive contribution to debates about invisible energy po...
Preprint
Emissions arising from the production and consumption of food are acknowledged as a major contributor to climate change. From a consumer's perspective, however, the sustainability of food may have many meanings: it may result from eating less meat, becoming vegetarian, or choosing to buy local or organic food. To explore what food sustainability me...
Article
Full-text available
In this forum we highlight innovative thought, design, and research in the area of interaction design and sustainability, illustrating the diversity of approaches across HCI communities. --- Roy Bendor, Editor
Article
More dramatically than ever, smart homes are affecting the lives of those who inhabit them. The ACM CHI Conference on Human Factors in Computing Systems is renowned for its focus on how technology impacts peoples lives. In this issue, we highlight research presented at CHI 2018 that explores living in, and interacting with, smart homes.
Conference Paper
Full-text available
The evaluation of research artefacts is an important step to validate research contributions. Sub-disciplines of HCI often pursue primary goals other than usability, such as Sustainable HCI (SHCI), HCI for development, or health and wellbeing. For such disciplines, established evaluation methods are not always appropriate or sufficient, and new con...
Article
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Over the last decade, concerns have been raised about increases in the electricity used by information technologies, other consumer electronic devices, data centres, and to a much lesser degree, Internet distribution networks. At the same time, ‘smart’ innovations are widely anticipated to help reduce energy demand across diverse sectors of society...
Article
With inexpensive wireless devices that dont require a home remodel, maturing standards, mobile devices for remote access, and the emergence of speech appliances as a user interface for in-home interaction, its an exciting time for smart homes around the world.
Conference Paper
This paper examines the use of appropriation in contemporary internet art -- postinternet art -- in terms of internet technology and web content. The paper suggests that postinternet art reflects our cultural reality through the ubiquity and fluidity of internet services. This results to novel artistic practices that draw on the cultural connection...
Conference Paper
Full-text available
This note discusses opportunities for the HCI community to engage with environmental public policy. It draws on insights and observations made during the primary author's recent work for a policy unit at Global Affairs Canada, which is a federal ministry of the Government of Canada. During that work, the primary author identified several domains of...
Conference Paper
Full-text available
Motivated by mobile devices' growing demand for connectivity, and concern in HCI with the energy intensity and sustainability of networked services, in this paper we reveal the impact of applications on smartphones and tablets in terms of network demand and time use. Using a detailed mixed methods study with eight participants, we first provide an...
Article
The sustainability of food is a significant global concern with drastic change required to mitigate complex social, environmental and economic issues like climate change and food security for an ever increasing population. In this paper, we set out to understand the place of food in people’s lives, their mundane yet surprisingly complex ways of sou...
Conference Paper
Full-text available
This discussion paper considers the nature of growth in data traffic across the Internet, as a basis for asking whether and how such growth might slow down or otherwise be limited. Over the last decade, data growth has been dramatic, and forecasts predict a similar ongoing pattern. Since this is associated with increasing electricity consumption, s...
Conference Paper
In many parts of the world, the electricity supply industry makes the task of dealing with unpredictable spikes and dips in production and demand invisible to consumers, maintaining a seemingly unlimited supply. A future increase in reliance on time-variable renewable sources of electricity may lead to greater fluctuations in supply. We engaged rem...
Conference Paper
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This paper empirically explores the role that mobile devices have come to play in everyday practice, and how this links to demand for network connectivity and online services. After a preliminary device-logging period, thirteen participants were interviewed about how they use their iPhones or iPads. Our findings build a picture of how, through use...
Article
Tightly regulating indoor building temperatures using mechanical heating and cooling contributes significantly to worldwide greenhouse gas emissions. One promising approach for reducing the energy demand associated with indoor climate control is the adaptive model for thermal comfort. In this paper, we explore the challenges and opportunities for s...
Conference Paper
Full-text available
To date, research in sustainable HCI has dealt with ecofeedback, usage and recycling of appliances within the home, and longevity of portable electronics such as mobile phones. However, there seems to be less awareness of the energy and greenhouse emissions impacts of domestic consumer electronics and information technology. Such awareness is neede...
Conference Paper
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This paper makes the assertion that established concepts from thermal comfort research might be used to develop an adaptive comfort model for lighting. By gathering data from a live office environment, we demonstrate the necessity of dynamically-adapted lighting levels in order to achieve both comfort and energy savings. We detail the background an...
Conference Paper
Full-text available
In many parts of the world, mechanical heating and cooling is used to regulate indoor climates, with the aim of maintaining a uniform temperature. Achieving this is energy-intensive, since large indoor spaces must be constantly heated or cooled, and the difference to the outdoor temperature is large. This paper starts from the premise that comfort...
Conference Paper
This paper develops a holistic framework of questions which seem to motivate sustainability research in computing in order to enable new opportunities for critique. Analysis of systematically selected corpora of computing publications demonstrates that several of these question areas are well covered, while others are ripe for further exploration....
Conference Paper
Full-text available
Home sensing and automation systems are rarely discussed with reference to their direct energy demand, much less other environmental impacts such as greenhouse gas (GhG) emissions arising from their manufacture and transport. It is imperative that designers of such systems understand the impacts of the technologies they introduce, particularly wher...
Conference Paper
Full-text available
Everyday food and drink consumption makes up a significant proportion of global greenhouse gas emissions (16% of the total footprint for an average UK person [3]). Digital technology offers much scope for helping to reduce this---promoting reflection, increasing transparency of product and supply chain impacts, and so on---but the greatest impacts...
Conference Paper
Full-text available
In four university student kitchens over twenty-one days, we captured participants' food preparation activity, quantified the greenhouse gas emissions and direct energy connected to the food and cooking, and talked to participants about their food practices. Grounded in this uniquely detailed micro-account, our findings inform sustainable design fo...
Article
In this paper we present a room-to-room thermal model used to accurately predict temperatures in residential buildings. We evaluate the accuracy of this model with ground truth data from four occupied family homes (two in the UK and two in the US). The homes have differing construction and a range of heating infrastructure (wall-mounted radiators,...
Article
The article outlines a simple yet effective approach for implementing a reasonably accurate tracker. Pedestrian dead-reckoning (PDR) using foot-mounted inertial measurement units (IMU) is the basis for many indoor localization techniques, including map matching, various types of simultaneous localization and mapping (SLAM), and integration with GPS...
Conference Paper
Sensor and actuator networks are often installed in buildings for energy-related applications such as lighting and climate control. Such systems require metadata about the deployed hardware (e.g. which room each is in, what the function of each room is) in order to operate effectively. In this paper we present methods to automatically determine suc...
Conference Paper
Home heating systems often have a significant thermal inertia, as homes stay warm after the heating is turned off for significant periods of time. We present the EarlyOff concept, whereby home heating can be predictively turned off in advance of occupants' departure, using this inertia to keep the house warm while saving energy. We use a previously...
Article
HCI community is particularly well situated to think about how technologies can be redesigned, leading to reductions not predicated upon a concept of individuals who make constant and active choices. To be relevant and fruitful for sustainability, it is crucial to look at the composition of energy and/or emissions for the particular context of inte...
Article
Providing ad hoc solutions for positioning and tracking of emergency response teams is an important and safety-critical challenge. Although solutions based on inertial sensing systems are promising, they are subject to drift. We address the problem of positional drift by having the responders themselves deploy sensor nodes capable of sensing range...
Conference Paper
Full-text available
Home heating is a major factor in worldwide energy use. Our system, PreHeat, aims to more efficiently heat homes by using occupancy sensing and occupancy prediction to automatically control home heating. We deployed PreHeat in five homes, three in the US and two in the UK. In UK homes, we controlled heating on a per-room basis to enable further ene...
Article
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Reducing domestic energy consumption has a long, varied history, embracing pervasive computing, technology, sociology, and economics. The authors provide an overview and key references to help readers explore this rich field's background more deeply and broadly.
Conference Paper
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While a number of acoustic localisation systems have been proposed over the last few decades, these have typically either relied on expensive dedicated microphone arrays and workstation-class processing, or have been developed to detect a very specific type of sound in a particular scenario. However, as people live and work indoors, they generate a...
Conference Paper
For locating a set of stationary devices, algorithms such as MDS-MAP have been favoured by the sensor network community. This is generally because of their low computational complexity. Whilst comparisons for complexity and performance have been done for other algorithms, non-linear regression (NLR) has been neglected. The authors find that it is n...
Conference Paper
We present an efficient CDMA detection core suited for multiuser indoor acoustic positioning. An ultrasonic multi-code despreader is proposed, allowing simultaneous broadband acoustic ranging signals to be processed in real time by embedded sensors. The ranging performance is characterised using a dataset gathered from a real deployment of ultrason...
Conference Paper
Acoustic events are a rich source of information for context-awareness and support various application areas, such as audio surveillance [1], sound sensing [2], intelligent auditory interfaces [3] and speech localization [4]. Acoustic localization solutions are also increasingly becoming important and feasible due to recent advances in personal por...
Conference Paper
A new generation of ultra wideband (UWB) communication transceivers are becoming available which support both positioning and communication tasks. Transceiver manufacturers envision that commu- nication and positioning features are used separately. We believe that this is an unnecessary restriction of the available hardware and that po- sitioning a...
Conference Paper
This paper presents two algorithms, non-linear regression and Kalman filtering, that fuse heterogeneous data (pseudorange and an gle-of-arrival) from an ultra-wideband positioning system. The performance of both the algorithms is evaluated using real data from two deployments, for both static and dynamic sce- narios. We also consider the effectiven...
Conference Paper
A number of wireless sensor network (WSN) applications require the handling of high-fidelity data (such as audio or images), and/or are very bursty in their networking and processing activity (i.e. there are long periods of inactivity interrupted by short periods where lots of data is processed and/or communicated). Sensor node platforms which can...
Conference Paper
Ad hoc solutions for tracking and providing navigation sup- port to emergency response teams is an important and safety- critical challenge. We propose a navigation system based on a combination of foot-mounted inertial sensors and ul- trasound beacons. We evaluate experimentally the perfor- mance of our dead reckoning system in different environ-...
Conference Paper
Full-text available
Spontaneous interaction is a desirable characteristic associated with mobile and ubiquitous computing. The aim is to enable users to connect their personal devices with devices encountered in their environment in order to take advantage of interaction opportunities in accordance with their situation. However, it is difficult to secure spontaneous i...
Article
Thr Headstart 2006 project aims to demonstrate pervasive computing's approach of detecting real-world phenomena, processing it using embedded computers, and using actuators to achieve a desirable effect. Headstart is national scheme in the UK for talented students entering their final year of secondary schools in which applicants can choose from co...
Conference Paper
Full-text available
Methods for node localisation in sensor networks usually rely upon the measurement of received strength, time-of-arrival, and/or angle-of-arrival of an incoming signal. In this paper, we propose a method for achieving higher accuracy by combining redundant measurements taken by difierent nodes. This method is aimed at compensating for the systemati...
Article
Ultrasonic location systems are a popular solution for the provision of fine-grained indoor positioning data. Applications include enhanced routing for wireless networks, computer-aided navigation, and location-sensitive device behavior. However, current ultrasonic location systems suffer from limitations due to their use of narrowband transducers,...
Conference Paper
Full-text available
We propose a lightweight localisation approach for supporting distance and range queries in ad hoc wireless sensor networks. In contrast to most previous localisation approaches we use a distance graph as spatial representation where edges between nodes are labelled with distance constraints. This approach has been carefully designed to satisfy the...
Book
nd These proceedings contain the papers presented at the 2 International Workshop on Location- and Context-Awareness in May of 2006. As computing moves increasingly into the everyday world, the importance of location and context knowledge grows. The range of contexts encountered while sitting at a desk working on a computer is very limited compared...
Conference Paper
A large number of MAC protocols support energy efficiency in sensor networks by forming rigid sleep/wakeup schedules. This demonstration illustrates an energy-efficient protocol which adapts to changing sensor update rates, as required by certain application scenarios such as real time location tracking.
Conference Paper
Pin&Play has enabled a new type of surface-based physical user interface, characterised by dynamic arrangement of interface objects on a surface area. Previous work has shown that this affords rapid re-arrangement of the spatial layout of interface objects, for example in adaptation to user preferences, but the Pin&Play system did not support track...
Conference Paper
Full-text available
Knowledge of the fine-grained location and orientation of devices on a surface can be used to enhance the surface-based computing tasks of mobile users in the home and workplace. However existing systems, which provide surface-based positioning information are often not a practical solution for mobile users, since the systems all rely upon pre-inst...
Conference Paper
Full-text available
If a mobile computing device knows how it is positioned and oriented in relation to other devices nearby, then it can provide enhanced support for multi-device and multi-user interactions. Existing systems that provide position information to mobile computers are reliant on externally deployed infrastructure, such as beacons or sensors in the envir...
Article
The advances in location-sensing technologies and their widespread deployment are discussed. The recent developments in sensor fusion techniques, location representation and software support facilitate the development of location-aware applications using the multitude of sensors. The existing widest deployments of location-sensing technologies are...
Article
reference [1]. Examples include 3D coordinates inside a building, or public areas on a campus. In order to provide statically-referenced data, such systems necessarily utilise marking or sensing units located at fixed positions in the environment. The units emit or sense signals via some physical medium (such as infrared light, ultrasound, or wirel...
Conference Paper
Many location-aware applications rely on data from fine-grained location systems. During deployment such systems require a survey, specifying the locations of their environment-based components. Most current surveying methods are time-consuming, and require costly and bulky equipment. This paper presents the concept of self-surveying, i.e. methods...
Conference Paper
Many mobile applications can be greatly enhanced when provided with the locations of people and devices. Ultrasonic location systems have been shown to supply location information with centimeter accuracy at high update rates. Such high-performance systems, however, have relied upon a centralized or coordinated architecture, preventing the user fro...
Conference Paper
Indoor ultrasonic location systems provide fine-grained position data to ubiquitous computing applications. However, the ultrasonic location systems previously developed utilize narrowband transducers, and thus perform poorly in the presence of noise and are constrained by the fact that signal collisions must be avoided. In this paper, we present a...
Article
Full-text available
This report presents a method for establishing and secur-ing spontaneous interactions on the basis of spatial references which are obtained by accurate sensing of relative device positions. Utilising the Relate ultrasonic sensing system, we construct an interlocked protocol using radio frequency messages and ultrasonic pulses for verifying that two...
Article
Full-text available
If a mobile computer knows how it is positioned and oriented in relation to other mobile devices nearby, then it can provide en- hanced support for multi-device and multi-user interactions. Exist- ing systems that provide position information to mobile computers are reliant on externally deployed infrastructure, such as beacons or sensors in the en...
Article
A large number of MAC protocols support energy effi- ciency in sensor networks by forming rigid sleep/wakeup schedules. This demonstration illustrates an energy-effic ient protocol which adapts to changing sensor update rates, as required by certain application scenarios such as real time location tracking.

Citations

... Robotics solutions have been introduced to solve the is-sues associated with human labor-based cleaning of building infrastructures [2]. These cleaning robotics solutions extend from domestic to industrial premises, including application domains such as floor cleaning [3], [4], facades cleaning [5], [6], wall cleaning [7], furniture cleaning [8], and duct cleaning [9]. ...
... Due to the variability in individual thermal comfort, there may be bias in thermal comfort standards that only consider gendered and age-specific variables that exclude other regular building occupants [22,53,54]. An increasing amount of literature calls for more diverse and inclusive thermal margins for persons outside of the male, working-age, and ablebodied demographic [46,47,55,56]. ...
... To mitigate the internet's impact on the environment, many attempts have been made at the global, organizational, and individual levels, involving both technical and nontechnical endeavours (UN, 2019, UNFCCC, 1992. However, the individual's role in using internet services responsibly in one's personal circumstances (henceforth referred to as responsible personal internet use 1 ) has rarely received much attention (Hill et al., 2020Seidler et al., 2020). While there are studies on the individual level, most of such work addresses an individual in the organizational setting. ...
... The stringent bandwidth, latency and jitter requirements of these applications and the expected increase of traffic in the forthcoming years [1], exacerbate the high strain on current network infrastructures, even more on cellular networks. Many gaming blogs and discussions 4 point on network issues encountered when using cloud gaming. ...
... While this heterogeneity is seen by some as a way to bring diverse scholars together (Lélé 1991), for others it has led to confusion (Oermann and Weinert 2016), and a conceptual "dead-end" (Vogt and Weber 2019). Furthermore, prominent concerns have arisen about "green-washing" (Lucivero et al. 2020), with some scholars describing sustainability efforts as a catch phrase within policymaking and broader civil society -a fashion accessory, or a brilliant slogan (Sartori, Latronico, and Campos 2014). Other scholars point to the fact that the meaning of environmental sustainability often revolves around carbon-centric approaches and fails to include other aspects of environmental impacts (Samuel, Lucivero, and Somavilla 2022;Dalsgaard 2013). ...
... In terms of positive impact, previous studies conducted in developed countries found that the IoT-SHT brings a variety of benefits to its users, for example comfort, convenience, security and safety, joy, time saving, energy saving, and even psychological well-being [8,34,35]. More specifically, Mtshali and Khubisa [36] argue that IoT-SHT as an interactive user centric IoT application has promisingly improved people's Quality of Life (QoL) to a great extent through its efficiently AI-based and home automation and revolutionary voice control features [37]. ...
... Usage of the extension board (IoT, Smart, and Drone); an external sensor; or wearable materials such as an electrically conductive thread, LED diodes, and power board, give us an opportunity to understand how things work in our everyday life [27] or develop experimental equipment and try to explain the underlying physics phenomena [28]. There is a wide range of STEAM (science, technology, engineering, art, and math) projects that could be realized through micro:bit: developing games [29]; the privacy, security, and safety [30]; solving real-world problems [31]; smart farming [32]; or even creating art, e.g., a paper-cutting lamp [33]. ...
... Therein, the described results imply that the simultaneous operation of EV and AC could lead to peaky load curves. Automated DR incorporating renewable energy and reducing penalties due to peak loads are widely discussed among researchers [28]. The mitigation of such peaky load curves of a smart home under SG environment is the motivation behind the presented work. ...
... Governments, energy policymakers and the energy industry have become major advocates of home automation's energy-saving potentials. As part of a range of policies, these stakeholders are advancing a broad, coordinated agenda of delivering smart technologies to homes and cities (Hazas & Strengers 2019;Tirado Herrero et al. 2018). For example, the UK's Clean Growth plan, which affirms smart systems as essential to low-carbon growth, features £265 million for smart systems and £184 million for homes as part of government investments in clean technology research, design and development, including heat and energy efficiency (BEIS 2017). ...
... Two studies from 2012 [32,60] discuss the issue of delivering video content to mobile devices and their energy impact, however, data is likely changed in the last 10 years. A recent work discusses the use of YouTube as a streaming platform and its sustainability [66]. The work cites research stating that videos took 72% of global consumer traffic in 2017. ...