Within the HCI community, there has been increasing attention to address issues of injustice through participatory and community-engaged approaches. In addition, researchers who conduct this collaborative work with marginalized groups are sharing the institutional vulnerabilities, challenges, and harms that can impact their well-being and their work. In this paper, we argue how the HCI community can learn from the knowledge and strategies of activists who engage in collective action and movement work. In particular, we discuss the role of joy in participatory, community-engaged, and equity-oriented work. Through testimonial authority, we present stories to describe the importance of cultivating joy, how we design for joy, what joy looks like in our work, and how joy can be a sustaining force for researchers and collaborators alike. We end with implications for HCI design and research work with marginalized communities.

Initially conceived as problem-focused programming events, hackathons have expanded to encompass a range of issue areas, stakeholders and activities. There have been important critiques of hackathons in relation to their format and structure, their epistemological assumptions, and their outputs and impacts. Scholars working in Feminist HCI have proposed design considerations for more inclusive hackathons that focus on social justice outcomes for marginalized groups. Evaluative work on hackathons has assessed entrepreneurial contributions, skill development, and affective impacts, but largely absent from the analysis is a view of long-term personal impacts on participants. What kinds of lasting impacts (if any) do issue-focused hackathons have on participants themselves? In this paper, we describe a post-hoc qualitative study with participants and organizers of a postpartum health hackathon in the U.S., one year after the event took place. Our goals were to understand people's motivations for participating, what impact (if any) their participation had on their lives, and how (if at all) their participation shaped how they now understand postpartum health. Our findings indicate that the hackathon functioned as a space of "feminist consciousness raising" in that it provided space for navigating and sharing personal experiences, contextualizing and connecting those experiences to structural oppression, and developing participants' self- and collective-efficacy to create design interventions and enact social change. Feminist consciousness raising is not just "awareness-raising", but rather a specific historic and contemporary practice which we describe and situate in relation to personal experiences of oppression around stigmatized topics. With these findings, we situate feminist consciousness raising in relation to the literature on hackathons and feminist HCI, speculate which aspects of the design of the event led to it fostering feminist consciousness raising, and generate recommendations for how to intentionally bring feminist consciousness raising to the design of hackathons and innovation events.

Breastfeeding is not only a public health issue, but also a matter of economic and social justice. This paper presents an iteration of a participatory design process to create spaces for re-imagining products, services, systems, and policies that support breastfeeding in the United States. Our work contributes to a growing literature around making hackathons more inclusive and accessible, designing participatory processes that center marginalized voices, and incorporating systems- and relationship-based approaches to problem solving. By presenting an honest assessment of the successes and shortcomings of the first iteration of a hackathon, we explain how we re-structured the second "Make the Breast Pump Not Suck" hackathon in service of equity and systems design. Key to our re-imagining of conventional innovation structures is a focus on experience design, where joy and play serve as key strategies to help people and institutions build relationships across lines of difference. We conclude with a discussion of design principles applicable not only to designers of events, but to social movement researchers and HCI scholars trying to address oppression through the design of technologies and socio-technical systems.

In recent years, the CHI community has begun to discuss how HCI research could improve the experience of motherhood. In this paper, we take up the challenge of designing for this complex life phase and present an analysis of data collected from a design process that included over 1,000 mother-submitted ideas to improve the breast pump, a technology that allows mothers around the world to collect and store their breast milk. In addition to presenting a range of ideas to improve this specific technology, we discuss environmental, legal, social, and emotional dimensions of the postpartum period that suggest opportunities for a range of additional supportive technologies. We close with insights linking our findings to ongoing discussions related to Feminist HCI theory, crowdsourcing, and participatory design.

Online technologies are promising for helping older adults maintain social connectedness, particularly with younger people, yet many older adults resist or participate minimally in the mainstream technologies used by younger members of their social network. We present results from an interview study involving 22 older adults (age 71-92) to understand communication preferences and values related to social media. Seniors articulate many concerns with online social media, including the time required for legitimate participation, the loss of deeper communication, content irrelevance, and privacy. Additionally, older adults engage in social practices that could be supported by online social technologies, but they rarely use such tools. The theme of material social communications emerges from our data, and we examine this in context of online social media. We conclude with design considerations for the development of social media for older adults, and as part of this we describe the notion of bridging technologies as a framework for intergenerational communication design.

We describe how current radiological best practices are predicated on a sophisticated technological ecosystem usually comprised of multiple large-scale displays, and integrated record keeping and communication systems driven by high-speed networks. At the same time, current development of low-cost ultrasound (U/S) devices for low-resource settings trends towards small-scale, independent devices with palm-sized screens. We reviewed existing literature, analyzed findings from two years of fieldwork in Uganda, and conducted an interview study with clinicians about radiology work practices to determine which patterns and technologies contribute to the efficacy of ultrasound. We use these findings to inform how ultrasound technology in low-resource settings can most usefully be developed and deployed. In addition, findings are relevant for creating medical technologies for low-resource environments generally, as we make clear the importance of considering not just technology development aspects like power consumption and interface, but also larger technology and work ecosystems.

Ultrasound imaging is an effective tool for identifying maternal mortality risk factors. However, the high cost of ultrasound devices and the scarcity of ultrasound training are two major barriers to adoption in the developing world; complicated and expensive medical technologies are unlikely to meet the needs of users with limited opportunities for formal training and continuing education. To address these particular barriers, we have designed an inexpensive ultrasound system composed of off-the-shelf hardware and custom software. Our system is designed for use by rural midwives---often central medical figures in resource-constrained communities. This paper presents our work integrating help and tutorial software into the ultrasound system we developed. Our goal is to supplement a midwife's conceptual and operational knowledge of diagnostic ultrasound through appropriate and adaptive scaffolding. The design of our help system is informed by interviews with sonographers and radiologists in the United States and Uganda, and data collected during two fieldwork visits to Uganda. Through our fieldwork and preliminary evaluations, we have found that in addition to in-context reference material accessible during an exam, midwives need in-depth learning materials that can be accessed outside of a medical exam scenario.