One of the great societal challenges that we face today concerns the move to more sustainable patterns of energy consumption, reflecting the need to balance both individual consumer choice and societal demands. In order for this 'energy turnaround' to take place, however, reducing residential energy consumption must go beyond using energy-efficient devices: More sustainable behaviour and lifestyles are essential parts of future 'energy aware' living. Addressing this issue from an HCI perspective, this paper presents the results of a 3-year research project dealing with the co-design and appropriation of a Home Energy Management System (HEMS) that has been rolled out in a living lab setting with seven households for a period of 18 months. Our HEMS is inspired by feedback systems in Sustainable Interaction Design and allows the monitoring of energy consumption in real-time. In contrast to existing research mainly focusing on how technology can persuade people to consume less energy ('what technology does to people'), our study focuses on the appropriation of energy feedback systems ('what people do with technology') and how newly developed practices can become a resource for future technology design. Therefore, we deliberately followed an open research design. In keeping with this approach, our study uncovers various responses, practices and obstacles of HEMS use. We show that HEMS use is characterized by a number of different features. Recognizing the distinctive patterns of technology use in the different households and the evolutionary character of that use within the households, we conclude with a discussion of these patterns in relation to existing research and their meaning for the design of future HEMSs. RESEARCH HIGHLIGHTS • We developed an own Home Energy Management System (HEMS). • We rolled out our HEMS system in a living lab setting to seven households over a period of 18 months. • Our System provides feedback through TV, PC, smartphone and tablet-based interfaces. • This allowed us to explore 'what people do with HEMS in daily life'. • We identify and discuss nine meaningful categories of appropriating HEMS. • Based on our results, we discuss potentials for the design of future HEMSs.
With this paper we take a first step to understand the appropriation of social media by the police. For this purpose we analyzed the Twitter communication by the London Metropolitan Police (MET) and the Greater Manchester Police (GMP) during the riots in August 2011. The systematic comparison of tweets demonstrates that the two forces developed very different practices for using Twitter. While MET followed an instrumental approach in their communication, in which the police aimed to remain in a controlled position and keep a distance to the general public, GMP developed an expressive approach, in which the police actively decreased the distance to the citizens. In workshops and interviews, we asked the police officers about their perspectives, which confirmed the identified practices. Our study discusses benefits and risks of the two approaches and the potential impact of social media on the evolution of the role of police in society.
The use of social media during crises has been explored in a variety of natural and man-made crisis situations. Yet, most of these studies have focused exclusively on the communication strategies and messages sent by crisis responders. Surprisingly little research has been done on how crisis publics (i.e., those people interested in or affected by the crisis) use social media during such events. Our article addresses this gap in the context of citizens' Twitter use during the 2011 riots in the UK. Focusing on communications with and about police forces in two cities, we analyzed 5,984 citizen tweets collected during the event for content and sentiment. Comparing the two cases, our findings suggest that citizens' Twitter communication follows a general logic of concerns, but can also be influenced very easily by single, non-crisis related events such as perceived missteps in a police force's Twitter communication. Our study provides insights into citizens' concerns and communication patterns during crises adding to our knowledge about the dynamics of citizens' use of social media in such times. It further highlights the fragmentation in Twitter audiences especially in later stages of the crisis. These observations can be utilized by police forces to help determine the appropriate organizational responses that facilitate coping across various stages of crisis events. In addition, they illustrate limitations in current theoretical understandings of crisis response strategies, adding the requirement for adaptivity, flexibility and ambiguity in organizational responses to address the observed plurivocality of crisis audiences.
This paper presents a new perspective for the design of indoor navigation support. In contrast to technology oriented approaches coming from Context Awareness research, we argue for a wider focus that complements the technical question of providing precise indoor location with the development of more effective navigation practices based on technology available today. Starting from research on indoor navigation conducted with the Paris Fire Brigade, we present two design concepts aimed at supporting firefighters in creating and finding their own paths, together with some of the design strategies that informed the creation of these concepts.
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