Human-centred computer architecture: redesigning the mobile datastore and sharing interface

This dissertation develops a material perspective on Information & Communication Technologies and combines this perspective with a Research through Design approach to interrogate current and develop new mobile sharing interfaces and datastores. through this approach I open up a line of inquiry that connects a material perspective of information with everyday sharing and communication practices as well as with the mobile and cloud architectures that increasingly mediate such practices. With this perspective, I uncover a shifting emphasis of how data is stored on mobile devices and how this data is made available to apps through sharing interfaces that prevent apps from obtaining a proper handle of data to support fundamentally human acts of sharing such as giving. I take these insights to articulate a much wider research agenda to implicate, beyond the sharing interface, the app model and mobile datastore, data exchange protocols, and the Cloud. I formalise the approach I take to bring technically and socially complex, multi-dimensional and changing ideas into correspondence and to openly document this process. I consider the history of the File abstraction and the fundamental grammars of action this abstraction supports (e.g. move, copy, & delete) and the mediating role this abstraction – and its graphical representation – plays in binding together the concerns of system architects, programmers, and users. Finding inspiration in the 30 year history of the file, I look beyond the Desktop to contemporary realms of computing on the mobile and in the Cloud to develop implications for reinvigorated file abstractions, representations, and grammars of actions. First and foremost, these need to have a social perspective on files. To develop and hone such a social perspective, and challenge the assumption that mobile phones are telephones – implying interaction at a distance – I give an interwoven account of the theoretical and practical work I undertook to derive and design a grammar of action – showing – tailored to co-present and co-located interactions. By documenting the process of developing prototypes that explore this design space, and returning to the material perspective I developed earlier, I explore how the grammars of show and gift are incongruent with the specific ways in which information is passed through the mobile’s sharing interface. This insight led me to prototype a mobile datastore – My Stuff – and design new file abstractions that foreground the social nature of the stuff we store and share on our mobiles. I study how that stuff is handled and shared in the Cloud by developing, documenting, and interrogating a cloud service to facilitate sharing, and implement grammars of actions to support and better align with human communication and sharing acts. I conclude with an outlook on the powerful generative metaphor of casting mobile media files as digital possessions to support and develop human-centred computer architecture that give people better awareness and control over the stuff that matters to them

Designing Digital Storytelling for Rural African Communities

Chongilala – a long time ago – says Mama Rhoda of Adiedo, Kenya. She looks deeply into our eyes. We record her rhythms and rhymes as she sings and tells a story about her grandparents. She shows us the exact spot where her great-grandfathers and his friends used to sit and drink and how her grandmother used to dance. This thesis situates digital storytelling in rural African communities to enable rural people, like Mama Rhoda, to record and share their stories and to express their imaginations digitally. We explore the role of design, and the methods and perspectives designers need to take on to design across cultures and to understand the forms and meanings behind rural African interpretations of digital storytelling. These perspectives allow us to 'unconceal' how our Western storytelling traditions have influenced design methods and obscure the voices of ‘other’ cultures. By integrating ethnographic insights with previous experiences of designing mobile digital storytelling systems, we implement a method using cell-phones to localize storytelling and involve rural users in de- sign activities – probing ways to incorporate visual and audio media in storytelling. Products from this method help us to generate design ideas for our system, most notably flexibility. Leveraging this prototype as a probe and observing villagers using it in two villages in South Africa and Kenya, we report on situated use of our prototype and discuss, and relate to usage, the insights we gathered on our prototype, the users, their needs, and their context. We use these insights to uncover further implications for situating digital storytelling within those communities and reflect on the importance of spending time in-situ when designing across cultures. Deploying our prototype through an NGO, we stage first encounters with digital storytelling and show how key insiders can introduce the system to a wider community and make it accessible through their technical and social expertise. Our mobile digital storytelling system proved to be both useable and useful and its flexibility allowed users to form their own interpretations of digital storytelling and (re)appropriate our system to alternative ends. Results indicate that our system accommodates context and that storytelling activities around our system reflect identity. Our activities in communities across Africa also show that our system can be used as a digital voice that speaks to us, by allowing users to express themselves – through digital stories – in design

Ötzi, 30 years on: A reappraisal of the depositional and post-depositional history of the find

When Ötzi, the Iceman, was found in a gully in the Tisenjoch pass in the Tyrolean Alps in 1991, he was a huge surprise for the archaeological community. The lead initial investigator of the find argued that it was unique, preserved by serendipitous circumstances. It was hypothesised that the mummy with associated artefacts had been quickly covered by glacier ice and stayed buried until the melt-out in 1991. It is now more than 30 years since Ötzi appeared. In this paper, we take a closer look at how the find can be understood today, benefitting from increased knowledge gained from more than two decades of investigations of other glacial archaeological sites, and from previous palaeo-biological investigations of the find assemblage. In the light of radiocarbon dates from the gully and new glaciological evidence regarding mass balance, it is likely that Ötzi was not permanently buried in ice immediately after his death, but that the gully where he lay was repeatedly exposed over the next 1500 years. We discuss the nature of the ice covering the site, which is commonly described as a basally sliding glacier. Based on the available evidence, this ice is better understood as a non-moving, stationary field of snow and ice, frozen to the bedrock. The damaged artefacts found with Ötzi were probably broken by typical postdepositional processes on glacial archaeological sites, and not, as previously claimed, during conflict prior to Ötzi’s flight from the valley below.publishedVersio

Mining at the Fringes. High-Altitude Prehistoric Copper Mining in the Oberhalbstein Valley (Grisons, Switzerland)

The mining region of Oberhalbstein, to date sparsely studied, has been the subject of archaeological research since 2013. Two mining areas which lie well above the forest line were studied in the summer of 2017. The Avagna-Ochsenalp site includes multi-phased heap features, of which the earliest phase has been dendrochronologically dated to the 11th century BC. In Cotschens, mining traces in an area of approximately 0.1 km2 from an unknown time period have been observed. Here, the flooded mine 1 was studied in more detail. After the cavity had been drained, 66 wood objects were revealed, including mining tools from the 1st century BC. 14C dating further confirms Late Bronze Age and Early to Late Iron Age activity. Stone tools from the adjacent heap also confirm prehistoric on-site ore processing, a unique find so far in the Oberhalbstein region

Bringing Digital Storytelling to the Mobile

Technology has changed the way in which people tell their stories. This paper introduces digital storytelling and looks at why the mobile is an ideal platform for creating digital stories. The iterative design approach chosen for our Mobile Digital Storytelling system is discussed. Results of a final experiment, comparing our system to an existing mobile system that supports digital storytelling, are presented, which suggest that our system has met its design goals of providing an effective and efficient user interface. Qualitative insights from user evaluations show that mobile digital storytelling has a future

Communicating in designing an oral repository for rural African villages

We describe designing an asynchronous, oral repository and sharing system that we intend to suit the needs and practices of rural residents in South Africa. We aim to enable users without access to personal computers to record, store, and share information within their Xhosa community using cellphones and a tablet PC combined with their existing face-to-face oral practices. Our approach recognises that systems are more likely to be effective if the design concept and process build on existing local communication practices as well as addressing local constraints, e.g. cost. Thus, we show how the objectives for the system emerged from prolonged research locally and how we communicated insights, situated in the community, into the process of design and development in a city-based lab. We discuss how we integrated understandings about communication between situated- and localresearchers and designers and developers and note the importance of recognising and centralising subtle differences in our perception of acts of oral communication. We go on to show how the materiality of the software, the tablet form factor, and touch interaction style played into our collaborative effort in conceiving the design.Department of HE and Training approved lis

Situating digital storytelling within African communities

We reflect on the methods, activities and perspectives we used to situate digital storytelling in two rural African communities in South Africa and Kenya. We demonstrate how in-depth ethnography in a village in the Eastern Cape of South Africa and a design workshop involving participants from that village allowed us to design a prototype mobile digital storytelling system suited to the needs of rural, oral users. By leveraging our prototype as a probe and observing villagers using it in two villages in South Africa and Kenya, we uncovered implications for situating digital storytelling within those communities. Finally, we distil observations relevant to localizing storytelling and their implications for transferring design into a different community

Gender and participation: critical reflection on Zenzeleni Networks in Mankosi, South Africa

This paper unveils the complexity of gender dynamics by reflecting on lessons learned in Zenzeleni Networks and provides a different perspective to notions of “participation” by asking “who participates and how?” The paper employs a feminist conceptual framework, particularly social constructionist theory and intersectionality, to understand women’s participation and experience, analyzing multi-layered and intersecting structural injustices that marginalize women’s choices, empowerment, scope for agency, and sense of ownership. In-depth interviews and focus group discussions gathered information from women living in Mankosi and women who are working for Zenzeleni Networks, respectively. Results show that gendered power dynamics of the community were reproduced within Zenzeleni Networks. Although women play a key role in the everyday operationalization of Zenzeleni Networks, their role has been considered part of their domestic duties, which results in misrecognition and underrepresentation of their work.CONFINE Integrated Project FIRE #288535 Telkom, Cisco and Aria Technologies via the Telkom Centre of Excellence (CoE) programme

Designing and theorizing co-located interactions.

This paper gives an interwoven account of the theoretical and practical work we undertook in pursuit of designing co- located interactions. We show how we sensitized ourselves to theory from diverse intellectual disciplines, to develop an analytical lens to better think about co-located interactions. By critiquing current systems and their conceptual founda- tions, and further interrelating theories particularly in regard to performative aspects of identity and communication, we develop a more nuanced way of thinking about co-located interactions. Drawing on our sensitivities, we show how we generated and are exploring, through the process of design, a set of co-located interactions that are situated within our social ecologies, and contend that our upfront theoretical work enabled us to identify and explore this space in the first place. This highlights the importance of problem fram- ing, especially for projects adopting design methodologies