Wulf, Volker
9 results
Now showing 1 - 9 of 9
- Some of the metrics are blocked by yourconsent settings
Publication Access status: Open Access , Exploring influencing factors of technology use for active and healthy ageing support in older adultsAim of this study is to investigate the influence of technological and social cognitive factors for the use of sensor-based technologies for active and ealthy ageing (AHA) support by older adults. In a mixed methods approach, data was initially obtained from an online questionnaire completed by older health technology users and used in a regression analysis, where factors from the Technology Acceptance Model (TAM) and the Social Cognitive Theory (SCT) served as predictors for health technology use (HTU). Further, in-depth interviews were conducted with older adults to gain insights into technology use and physical activity behaviour of older adults. The regression analysis showed that the TAM and SCT factors accounted for a significant proportion of variance (39.5%) in HTU. Significant predictors of HTU were physical activity (.399**), social support (.287*), and expectations regarding individual health (.440*) and physical appearance (?.470**),indicating physical activity as mediator for HTU. The qualitative analysis indicated the conflation of technology support with social environments as key for physical activity behaviour in older adults. The findings indicate physical activity as a mediator in HTU by older adults and suggest that the consideration of social factors in health technology design may facilitate the uptake of AHA technologies.Source Type:ArticleDOI:10.25819/ubsi/274 18 - Some of the metrics are blocked by yourconsent settings
Publication Access status: Open Access , Facebook and the mass media in TunisiaFacebook played a considerable role during the political uprisings of the so called ‘Arab Spring’ in 2011. Together with Al-Jazeera, it was one of the few reliable sources of information for protesters at that time. In this paper, we explore the media landscape in Tunisia two years after the uprising. We conducted a qualitative investigation (participant observation and interviewing) with young Tunisians. The paper describes how they use Facebook (FB), newspapers, and TV for gaining information and for exchange. By that time, FB was their primary medium for access to political information. They prefer the variety and diversity of user-generated content, they select information, discuss issues among their friends inside FB and with that, co-create meaning and trust. It seems that both traditional censorship in the national mass media and the revolutionary experience have created a unique media landscape among young Tunisians. Facebook still plays a leading role for many in that landscape, but there remains a ‘digital divide’.Source Type:ArticleJournal:Media in action : interdisciplinary journal on cooperative mediaVolume number:2018,1-Artikel_0513 18 - Some of the metrics are blocked by yourconsent settings
Publication Access status: Metadata only , From Surplus and Scarcity toward Abundance: Understanding the Use of ICT in Food Resource Sharing PracticesFood practices have become an important context for questions around sustainability. Within HCI, sustainable HCI and human-food-interaction have developed as a response. We argue, nevertheless, that food practices as a social activity remain relatively under-examined, and further that sustainable food practices hinge on communal activity. We present the results of action-oriented research with a grassroots movement committed to sustainable food practices at a local, communal level, thereby demonstrating the role of ICT in making food resource sharing a viable practice. We suggest that the current focus on food sharing might usefully be supplemented by attention to food resource sharing, an approach that aligns with a paradigm shift from surplus to abundance. We argue for a design that aims to encourage food resource sharing at a local level but that also has wider ramifications. These “glocal” endeavors recognize the complexity of prosumption practices and foster aspirations for “deep change” in food systems.Source Type:ArticleDOI:10.1145/35899572 - Some of the metrics are blocked by yourconsent settings
Publication Access status: Open Access , Grounded Design in a value sensitive context(2017); Volker Wulf in conversation with Batya FriedmanSource Type:ArticleJournal:Media in action : interdisciplinary journal on cooperative mediaVolume number:2017,2-Artikel_083 16 - Some of the metrics are blocked by yourconsent settings
Publication Access status: Metadata only , 7 - Some of the metrics are blocked by yourconsent settings
Publication Access status: Open Access , Mobile health platforms for active and healthy ageing support in older adults : design ideas from a participatory design studyIn this paper, we provide a participatory design study of a mobile health platform for older adults that provides an integrative perspective on health data collected from different devices and apps. We illustrate the diversity and complexity of older adults’ perspectives in the context of health and technology use, the challenges which follow on for the design of mobile health platforms that support active and healthy ageing (AHA) and our approach to addressing these challenges through a participatory design (PD) process. Interviews were conducted with older adults aged 65+ in a two-month study with the goal of understanding perspectives on health and technologies for AHA support. We identified challenges and derived design ideas for a mobile health platform called “My-AHA”. For researchers in this field, the structured documentation of our procedures and results, as well as the implications derived provide valuable insights for the design of mobile health platforms for older adults.Source Type:Article9 20 - Some of the metrics are blocked by yourconsent settings
Publication Access status: Open Access , Negotiating contradictions : engaging disparate stakeholder demands in designing for active and healthy ageingPurpose – Designing technologies for active and healthy ageing (AHA) requires a subtle understanding of end users (primary stakeholders) and healthcare professionals (secondary stakeholders). Often, their perspectives can be heterogeneous and contradictory. Identifying and negotiating them may be a challenge for designers. The purpose of this paper is to present our approach to understanding and negotiating contradictory stakeholder perspectives when designing AHA technologies for older adults. Design/methodology/approach – The authors conducted an exploratory interview study with 15 community-dwelling older adults and 11 healthcare stakeholders, including doctors, health insurance agencies, policymakers and caregivers. The authors analyzed the interview material and negotiated contradictory perspectives. Findings – Three major issues among stakeholders emerged: perspectives on AHA; perceived benefits and drawbacks of AHA technologies; and concerns about data privacy, control and trust. Research limitations/implications – The results show the heterogeneity and contradictions in stakeholder perspectives on AHA technologies and how these perspectives may be negotiated. This could help understand and facilitate long-term use of AHA technologies among older adults.Source Type:Article7 21 - Some of the metrics are blocked by yourconsent settings
Publication Access status: Open Access , Nomadic knowledge sharing practices and challenges: findings from a long-term case studyIn this paper, we explore a specialized type of knowledge, namely, nomadic knowledge, to understand its implications in knowledge sharing. Nomadic knowledge is enacted in a discontinuous pattern with a changing set of actors and further flows on a defined trajectory. This knowledge is quite important but is required sporadically, so it has a varying level of importance for stakeholders at different instances of time. The limited interest of knowledge holders after the creation of this type of knowledge makes its sharing process complex. Furthermore, new sets of actors overloaded with tasks often ignore the knowledge sharing aspect of nomadic knowledge due to the urgency of the tasks at hand. Using a long-term field study, we illustrate practices concerning the sharing of nomadic knowledge, which, we argue, are to date not yet well supported technologically. The objective of this contribution is, therefore, to outline the concept of nomadic knowledge and associated implications, so that respective knowledge sharing practices can be supported by the knowledge management community with appropriate technology. The underlying complexity of knowledge sharing practices highlighted in this paper stresses the need for appropriate technological and social processes to facilitate the sharing of nomadic knowledge.Source Type:Article8 17 - Some of the metrics are blocked by yourconsent settings
Publication Access status: Open Access , Travelling by taxi brousse in Madagascar(2018); ; ; Organising public mobility is a global challenge. However, most studies directed at ICT support approach the subject from the perspective of developed countries. In contrast, we conducted a modest and initial attempt to study practices of public transportation in Madagascar – one of the poorest countries in Africa. We found that central assumptions, usually unquestioned in prevailing studies, were challenged in the context of this developing country. We present an empirical study which analyses how collective taxis, locally called Taxi Brousses, are used in overland travel. The study reveals complex socio-political conditions which passengers face in this country. Security as well as corruption issues shape these transportation practices. Based on our findings, we indicate opportunities for supporting intra-organisational cooperation and the customers’ interaction with ICT artefacts.Source Type:ArticleJournal:Media in action : interdisciplinary journal on cooperative mediaVolume number:2018,1-Artikel_032 24
