Gunnar Stevens

Gunnar Stevens
Universität Siegen · M.A. Program in Human Computer Interaction

About

181
Publications
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Publications

Publications (181)
Article
While the recent discussion on Art. 25 GDPR often considers the approach of data protection by design as an innovative idea, the notion of making data protection law more effective through requiring the data controller to implement the legal norms into the processing design is almost as old as the data protection debate. However, there is another,...
Conference Paper
Intelligent Personal Assistants (IPA) are advertised as reliable companions in the everyday life to simplify household tasks. Due to speech-based usability issues, users struggle to deeply engage with current systems. The capabilities of newer generations of standalone devices are even extended by a display, also to address some weaknesses like mem...
Article
Full-text available
Disposing of bad actors on social media is a daunting task, particularly in the face of "engineered social tampering" [4]. That is what Ferrara et al. [6] have labeled the rise of social bots, and large platform owners are struggling to mitigate the harmful effects caused by such malicious software. Therefore, it is no surprise that platform owners...
Poster
Full-text available
Technological objects present themselves as necessary, only to become obsolete faster than ever before. This phenomenon has led to a population that experiences a plethora of technological objects, which become associated with certain stages of life and disappear thereafter.
Preprint
Full-text available
Technological objects present themselves as necessary, only to become obsolete faster than ever before. This phenomenon has led to a population that experiences a plethora of technological objects and interfaces as they age, which become associated with certain stages of life and disappear thereafter. Noting the expanding body of literature within...
Article
Data protection risks play a major role in data protection laws and have shown to be suitable means for accountability in designing for usable privacy. Especially in the legal realm, risks are typically collected heuristically or deductively, e.g., by referring to fundamental right violations. Following a user-centered design credo, research on usa...
Conference Paper
Recent publications propose concepts of systems that integrate the various services and data sources of everyday food practices. However, this research does not go beyond the conceptualization of such systems. Therefore, there is a deficit in understanding how to combine different services and data sources and which design challenges arise from bui...
Poster
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Today More personal data than ever before is being collected. The General Data Protection Regulation (GDPR) aims to strengthen the rights of consumers. But it is unclear how GDPR can be concretely implemented.
Article
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Advocates of autonomous driving predict that the occupation of taxi driver could be made obsolete by shared autonomous vehicles (SAV) in the long term. Conducting interviews with German taxi drivers, we investigate how they perceive the changes caused by advancing automation for the future of their business. Our study contributes insights into how...
Conference Paper
Full-text available
Since stationary self-checkout is widely introduced and well understood, previous research barely examined newer generations of smartphone-based Scan&Go. Especially from a design perspective, we know little about the factors contributing to the adoption of Scan&Go solutions and how design enables consumers to take full advantage of this development...
Conference Paper
Full-text available
In the course of growing online retailing, recommendation systems have become established that derive recommendations from customers’ purchase histories. Recommending suitable food products can represent a lucrative added value for food retailers, but at the same time challenges them to make good predictions for repeated food purchases. Repeat purc...
Poster
Full-text available
blocked without knowing the exact reasons or having effective ways to change the situation. In this study, we surveyed 15 Instagram users with blocking experiences about their understanding of algorithmic decision making and their need for explanations to understand the situation and interact with the system. Our results show that instead of post-d...
Preprint
Full-text available
In 1991, researchers at the center for the Learning Sciences of Carnegie Mellon University were confronted with the confusing question of "where is AI?" from users, who were interacting with artificial intelligence (AI) but did not realize it. After three decades of research, we are still facing the same issue with the unclear understanding of AI a...
Conference Paper
Critical consumerism is complex as ethical values are difficult to negotiate, appropriate products are hard to find, and product information is overwhelming. Although recommender systems offer solutions to reduce such complexity, current designs are not appropriate for niche practices and use non-personalized intransparent ethics. To support critic...
Article
In 1991, researchers at the center for the Learning Sciences of Carnegie Mellon University were confronted with the confusing question of “where is AI?” from users, who were interacting with artificial intelligence (AI) but did not realize it. After three decades of research, we are still facing the same issue with the unclear understanding of AI a...
Article
The desire to encourage companies to invest in energy efficiency has prompted various incentives, including taxation benefits. Many companies have invested in digital infrastructures to help them save energy but, as we show below, there are significant challenges in running a digital infrastructure in companies. Some of the projects in question inv...
Conference Paper
With the debates on climate change and sustainability, a reduction of the share of cars in the modal split has become increasingly prevalent in both public and academic discourse. Besides some motivational approaches, there is a lack of ICT artifacts that successfully raise the ability of consumers to adopt sustainable mobility patterns. To further...
Conference Paper
Frequently the main purpose of domestic artifacts equipped with smart sensors is to hide technology, like previous examples of a Smart Mirror show. However, current Smart Homes often fail to provide meaningful IoT applications for all residents’ needs. To design beyond efficiency and productivity, we propose to realize the potential of the traditio...
Data
Many questions arise in companies regarding the handling of data: How can the value of data assets be determined and how can the possibilities of Data Science be scaled? What resources are already available for this purpose? There are also questions about how designers and developers can collaborate effectively to design data-driven applications an...
Conference Paper
Full-text available
Research on food practices has become more common among scholars of HCI in recent years. Human-Food-Interaction (HFI) looks into the interplay of humans, food and technology. HFI, even so, has paid relatively little attention to the more collective elements of food practice, including social bonding [1]. The modest project we describe below aimed t...
Conference Paper
Full-text available
In 1991 the researchers at the center for the Learning Sciences of Carnegie Mellon University were confronted with the confusing question of "where is AI" from the users, who were interacting with AI but did not realize it. Three decades of research and we are still facing the same issue with the AI-technology users. In the lack of users' awareness...
Conference Paper
Full-text available
Today, more personal data than ever before is being collected and stored by companies of all types for a wide variety of purposes. The General Data Protection Regulation (GDPR) aims to strengthen the rights of consumers by providing them with tools for controlling data collection and processing. While companies are now subject to legal obligations,...
Article
It is anticipated that autonomous vehicles will have a huge impact on the creation of sustainable smart cities and communities. One of the key concerns regarding autonomous vehicles is how automation may threaten jobs in the transport industry, including the traditional role of taxi drivers. To begin to explore how important an actual taxi driver i...
Preprint
Full-text available
Plant-based diets, once considered to be something of a fad, have now taken on an entirely new significance as the ecological consequences of diet choice have become more apparent; it is now acknowledged that dietary choices have significant consequences for sustainability. However, plant-based cooking and the veganization of recipes are things new...
Conference Paper
Full-text available
Usability und User Experience (UX) haben als Design-Aspekte in der Produktentwicklung zunehmend an Bedeutung gewonnen. Daher ist es sinnvoll, die organisationale Kompetenz zur Entwicklung von Produkten mit einer positiven UX zu stärken. Veränderungen in Organisationen sind jedoch mit großem Aufwand verbunden. Deshalb müssen Organisationen entscheid...
Conference Paper
Social sustainability effects of autonomous vehicles are being discussed in a controversial manner. While there are numerous social benefits to be expected with the advent of autonomous vehicles, some people will face drawbacks of this development. On the one hand for those who earn their living by driving and on the other hand for those customers...
Article
Full-text available
With the debate on climate change, topics of diet change and the reduction of animal products have become increasingly important in both public and academic discourses. However, sustainable ICT studies have so far focused on individual aspects, in particular investigating the criticized persuasive design approach. We argue for a broader perspective...
Conference Paper
Full-text available
For over a decade, researchers from the practice-centered computing community are taking social practices as a unit of design. While the first generation focused on a social practice in isolation, more recent work argues for the (inter-)connections of mutually influencing practices as the primary unit of design. We discuss these current approaches...
Article
The GDPR regulates at present the handling with personal data fundamentally new and thereby opens new leeway. At the same time, it creates great uncertainty among those affected. One example of this is web tracking: It helps designers to improve the utility and usability of their websites based on, in part, extensive (personal) data collection, or...
Conference Paper
Full-text available
Given current traffic problems, transport-induced air pollution and climate damaging emissions, researchers are investigating potentials of autonomous vehicles (AVs) to contribute to a more sustainable mobility. Some studies, however, indicate that the introduction of AVs may cause rebound effects that could further harm the environment such uninte...
Conference Paper
Trust is the lubricant of the sharing economy. This is true especially in peer-to-peer carsharing, in which one leaves a highly valuable good to a stranger in the hope of getting it back unscathed. Nowadays, ratings of other users are major mechanisms for establishing trust. To foster uptake of peer-to-peer carsharing, connected car technology open...
Article
Full-text available
Zusammenfassung Die Bundesrepublik Deutschland erlebt in jüngster Vergangenheit verstärkt Dieselfahrverbote in Großstädten. Gleichzeitig erfahren Großstädte als Lebensmittelpunkt eine steigende Beliebtheit. Für Verkehrsunternehmen gilt es, der Bevölkerung nachhaltige Mobilitätslösungen zu bieten, die ein Höchstmaß an Flexibilität ermöglichen. Moder...
Chapter
Hardly any other innovation has the potential to change our traffic systems as profoundly and dramatically as autonomous vehicles. In this context, the potentials of shared autonomous vehicles (SAV) are discussed controversially. In the age of cities struggling with growing emissions and congestion problems, some experts predict SAV to reduce priva...
Article
Full-text available
Currently, there is a broad range of studies dealing with the design and visualization of energy consumption data for the domestic and increasingly for the office context. However, studies addressing the industrial context are quite rare, and due to the diversity of machines, processes, tasks, personal motivations, teams and the specific organizati...
Conference Paper
The GDPR regulates at present the handling with personal data fundamentally new and thereby opens new leeway. At the same time, it creates great uncertainty among those affected. One example of this is web trackers that help designers to improve the utility and usability of their websites on the basis of, in part, extensive (personal) data collecti...
Conference Paper
Full-text available
Loyalty programs are early examples of companies commercially collecting and processing personal data. Today, more than ever before, personal information is being used by companies of all types for a wide variety of purposes. To limit this, the General Data Protection Regulation (GDPR) aims to provide consumers with tools to control data collection...
Conference Paper
Full-text available
The alternative use of travel time is a widely discussed benefits of driverless cars. We therefore conducted 14 co-design sessions to examine how people manage their time, to determine how they perceive the value of time in driverless cars and derive design implications. Our findings suggest that driverless mobility will affect people's use of trav...
Conference Paper
Full-text available
While information about our food consumption behavior becomes more and more available through different digitalization trends within this domain, such as food related apps or smart kitchen devices, information remains captured in silos and can therefore not be used for usable and meaningful customer applications. This research in progress presents...
Article
Full-text available
Smart Meters are a key component of increasing the power efficiency of the Smart Grid. To help manage the grid effectively, these meters are designed to collect information on power consumption and send it to third parties. With Smart Metering, for the first time, these cloud-connected sensing devices are legally mandated to be installed in the hom...
Chapter
Organisationen wollen Produkte mit guter User Experience herstellen. Durch die Evaluation der organisationalen UX-Gestaltungskompetenz können Organisationen erkennen, wie stark ihre momentane UX-Gestaltungskompetenz ausgeprägt ist und wie die Kompetenz gezielt gesteigert werden kann. Für die Abbildung der aktuellen Kompetenz werden ein Fragebogen z...
Article
Full-text available
A key issue for smart home systems is supporting non-expert users in their management. Whereas feedback design on use cases (such as energy feedback) have gained attention, current approaches to providing awareness on the system state typically provide a rather technical view. Long-term investigations of the practices and resources needed for maint...
Article
Full-text available
Zusammenfassung Derzeit besteht ein hoher Gestaltungs- und Regulierungsbedarf zur Ausgestaltung einer Connected Car Cloud. Dieser wurde nicht zuletzt durch den Bericht der Ethikkommission „Autonomes Fahren“ unterstrichen. Die anstehenden Entscheidungen haben auch weitreichende Implikationen auf die Privatheit der Fahrer und Mitfahrenden. Die Verbra...
Article
Ein Konzept, dessen Beitrag zu einer umweltfreundlicheren Mobilität diskutiert wird, ist das P2P-Carsharing. Bisher ist wenig bekannt über die Motive und Erfahrungen von aktiven Nutzern oder die Ängste, Hemmungen und Barrieren der "Verweigerer" und Nichtnutzer. Um mehr über diese Aspekte zu erfahren, haben wir qualitative Interviews mit Nutzern und...
Article
Full-text available
Innovations in the mobility industry such as automated and connected cars could significantly reduce congestion and emissions by allowing the traffic to flow more freely and reducing the number of vehicles according to some researchers. However, the effectiveness of these sustainable product and service innovations is often limited by unexpected ch...
Conference Paper
Digitisation has brought a major upheaval to the mobility sector, and in the future, self-driving cars will probably be one of the transport modes. This study extends transport and user acceptance research by analysing in greater depth how the new modes of autonomous private cars, autonomous carsharing and autonomous taxis fit into the existing tra...
Conference Paper
Full-text available
Automated and connected cars could significantly reduce congestion and emissions through a more efficient flow of traffic and a reduction in the number of vehicles. An increase in demand for driving with autonomous vehicles is also conceivable due to higher comfort and improved quality of time using driverless cars. So far, empirical evidence suppo...
Book
The book is an exploration of the theoretical, conceptual and methodological foundations of human-centred design. Specifically, it critically examines the notion of 'practice' and argues for an understanding of the concept which emanates from engagement with design problems rather than simply from social scientific theory. The contributors to the b...
Chapter
Die Digitalisierung aller Lebenswelten wird das Kauf- und Konsumverhalten von Verbrauchern stark ändern. Es zeichnet sich ab, dass Zukunftsszenarien des Smart Shopping, Smart Kitchen und Smart Cooking zunehmend real werden und sich immer stärker verzahnen. Zurzeit finden sich z. B. Bestrebungen zum digitalen Kassenzettel. Der Beitrag zeigt, dass Ve...
Conference Paper
Full-text available
Durch die Digitalisierung befindet sich die Mobilitätsbranche im starken Umbruch. So wird man bei der Verkehrsmittelwahl zukünftig wohl auch auf selbstfahrende Autos zurückgreifen können. Die Studie erweitert die Verkehrs- und Nutzerakzeptanzforschung, indem unter Berücksichtigung relativer Teilmehrwerte tiefergehend analysiert wird, wie sich die n...
Conference Paper
Organisationen wollen Produkte mit guter User Experience herstellen. Durch die Evaluation der organisationalen UX-Gestaltungskompetenz können Organisationen erkennen, wie stark ihre momentane UXGestaltungskompetenz ausgeprägt ist und wie die Kompetenz gezielt gesteigert werden kann. Für die Abbildung der aktuellen Kompetenz werden ein Fragebogen zu...
Conference Paper
Full-text available
Traditionally automotive UI focusses on the ergonomic design of controls and the user experience in the car. Bringing networked sensors into the car, connected cars can provide additional information to car drivers and owners, for and beyond the driving task. While there already are technological solutions, such as mobile applications commercially...
Article
The technological development of the digital computer and new options to collect, store and transfer mass data have changed the world in the last 40 years. Moreover, due to the ongoing progress of computer power, the establishment of the Internet as critical infrastructure and the options of ubiquitous sensor systems will have a dramatic impact on...
Article
Full-text available
Das autonome Fahren wird die Mobilität revolutionieren. Um die Auswirkung der Vollautomation auf die Eigenschaften der Verkehrsmittel und die Präferenzen der Nutzer besser zu verstehen, haben wir die Nutzenwerte neuen Verkehrsmodi im Vergleich zu den bestehenden Verkehrsmodi analysiert und im Rahmen einer Online-Umfrage von potentiellen Nutzern in...
Conference Paper
Smart home systems change the way we experience the home. While there are established research fields within HCI for visualizing specific use cases of a smart home, studies targeting user demands on visualizations spanning across multiple use cases are rare. Especially, individual data-related demands pose a challenge for usable visualizations. To...
Conference Paper
Full-text available
Smart home systems are becoming an integral feature of the emerging home IT market. Under this general term, products mainly address issues of security, energy savings and comfort. Comprehensive systems that cover several use cases are typically operated and managed via a unified dashboard. Unfortunately, research targeting user experience (UX) des...