| 1. |
- Persson, Carina, 1964, et al.
(författare)
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TOI-2196 b: Rare planet in the hot Neptune desert transiting a G-type star
- 2022
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Ingår i: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 666
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Tidskriftsartikel (refereegranskat)abstract
- The hot Neptune desert is a region hosting a small number of short-period Neptunes in the radius-instellation diagram. Highly irradiated planets are usually either small (R less than or similar to 2 R-circle plus) and rocky or they are gas giants with radii of greater than or similar to 1 R-J. Here, we report on the intermediate-sized planet TOI-2196 b (TIC 372172128.01) on a 1.2 day orbit around a G-type star (V = 12.0, [Fe/H] = 0.14 dex) discovered by the Transiting Exoplanet Survey Satellite in sector 27. We collected 41 radial velocity measurements with the HARPS spectrograph to confirm the planetary nature of the transit signal and to determine the mass. The radius of TOI-2196 b is 3.51 +/- 0.15 R-circle plus, which, combined with the mass of 26.0 +/- 1.3 M-circle plus, results in a bulk density of 3.31(-0.43)(+0.51) g cm(-3). Hence, the radius implies that this planet is a sub-Neptune, although the density is twice than that of Neptune. A significant trend in the HARPS radial velocity measurements points to the presence of a distant companion with a lower limit on the period and mass of 220 days and 0.65 M-J, respectively, assuming zero eccentricity. The short period of planet b implies a high equilibrium temperature of 1860 +/- 20 K, for zero albedo and isotropic emission. This places the planet in the hot Neptune desert, joining a group of very few planets in this parameter space discovered in recent years. These planets suggest that the hot Neptune desert may be divided in two parts for planets with equilibrium temperatures of greater than or similar to 1800 K: a hot sub-Neptune desert devoid of planets with radii of approximate to 1.8-3 R-circle plus and a sub-Jovian desert for radii of approximate to 5-12 R-circle plus. More planets in this parameter space are needed to further investigate this finding. Planetary interior structure models of TOI-2196 b are consistent with a H/He atmosphere mass fraction between 0.4% and 3%, with a mean value of 0.7% on top of a rocky interior. We estimated the amount of mass this planet might have lost at a young age and we find that while the mass loss could have been significant, the planet had not changed in terms of character: it was born as a small volatile-rich planet and it remains one at present.
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| 2. |
- Vines, John, et al.
(författare)
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Designing For- and With- Vulnerable People
- 2013
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Ingår i: CHI ’13 Extended Abstracts on Human Factors in Computing Systems. - New York, NY, USA : ACM. ; , s. 3231-3234
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Konferensbidrag (refereegranskat)abstract
- Ubiquitous technology, coupled with a surge in empirical research on people that engages people with multiple challenges in their lives, is increasingly revealing the potential for HCI to enrich the lives of vulnerable people. Designing for people with vulnerabilities requires an approach to participation that is sensitive to the risks of possible stigmatization and an awareness of the challenges for participant involvement. This workshop will bring together researchers and practitioners to explore the critical issues surrounding designing with and for vulnerable individuals. We aim to provoke discussion about how 'vulnerability' is defined in HCI, what methodological and ethical concerns are raised when working with specific cases, and ways of designing for future technologies that support vulnerable people in novel and sensitive ways.
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| 3. |
- Diaz, Matias R., et al.
(författare)
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TOI-132 b: A short-period planet in the Neptune desert transiting a V=11.3 G-type star
- 2020
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Ingår i: Monthly Notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 493:1, s. 973-985
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Tidskriftsartikel (refereegranskat)abstract
- The Neptune desert is a feature seen in the radius-period plane, whereby a notable dearth of short period, Neptune-like planets is found. Here, we report the Transiting Exoplanet Survey Satellite (TESS) discovery of a new short-period planet in the Neptune desert, orbiting the G-type dwarf TYC 8003-1117-1 (TOI-132). TESS photometry shows transit-like dips at the level of similar to 1400 ppm occurring every similar to 2.11 d. High-precision radial velocity follow-up with High Accuracy Radial Velocity Planet Searcher confirmed the planetary nature of the transit signal and provided a semi-amplitude radial velocity variation of 11.38(-0.85)(+0.84) m s(-1), which, when combined with the stellar mass of 0.97 +/- 0.06 M-circle dot, provides a planetary mass of 22.40(-1.92)(+1.90) M-circle plus. Modelling the TESS light curve returns a planet radius of 3.42(-0.14)(+0.13) R-circle plus , and therefore the planet bulk density is found to be 3.08(-0.46)(+0.44) g cm(-3). Planet structure models suggest that the bulk of the planet mass is in the form of a rocky core, with an atmospheric mass fraction of 4.3(-2.3)(+1.2) percent. TOI-132 b is a TESS Level 1 Science Requirement candidate, and therefore priority follow-up will allow the search for additional planets in the system, whilst helping to constrain low-mass planet formation and evolution models, particularly valuable for better understanding of the Neptune desert.
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| 4. |
- Dow, Andy, et al.
(författare)
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Between grassroots and the hierarchy : Lessons learned from the design of a public services directory
- 2018
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Ingår i: Conference on Human Factors in Computing Systems - Proceedings. - New York, NY, USA : ACM. - 9781450356206 - 9781450356213
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Konferensbidrag (refereegranskat)abstract
- There is a growing interest in HCI research studying technology for citizen engagement in civic issues. We are now seeing issues around technologies for empowerment and participation, long discussed in HCI literature, appropriated and formalised in government legislation. In the UK, recent reforms stipulate that community-based service information should be published in continuously updated, collaboratively designed and maintained, online platforms. We report on a qualitative study where we worked with stakeholders involved in the collaborative design, development and implementation of such a platform. Our findings highlight tensions between the grassroots desire to innovate and local governments' rigid compliance with statutory obligation. We pose a series of challenges and opportunities for HCI researchers engaged in the design of civic technologies to consider going forward, addressing issues of engagement in policy, measures of participation and tools for enabling participatory processes in public institutions. © 2018 Copyright is held by the owner/author(s).
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| 5. |
- Dow, Andy, et al.
(författare)
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ThoughtCloud : Exploring the Role of Feedback Technologies in Care Organisations
- 2016
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Ingår i: 34TH ANNUAL CHI CONFERENCE ON HUMAN FACTORS IN COMPUTING SYSTEMS, CHI 2016. - New York, NY, USA : ASSOC COMPUTING MACHINERY. ; , s. 3625-3636
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Konferensbidrag (refereegranskat)abstract
- ThoughtCloud is a lightweight, situated, digital feedback system designed to allow voluntary and community sector care organisations to gather feedback and opinions from those who use their services. In this paper we describe the design and development of ThoughtCloud and its evaluation through a series of deployments with two organisations. Using the system, organisations were able to pose questions about the activities that they provide and gather data in the form of ratings, video or audio messages. We conducted observations of ThoughtCloud in use, analysed feedback received, and conducted interviews with those who 'commissioned' feedback around the value of comments received about their organisation. Our findings highlight how simple, easily deployable digital systems can support new feedback processes within care organisations and provide opportunities for understanding the personal journeys and experiences of vulnerable individuals who use these care services.
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| 6. |
- Dow, Andy, et al.
(författare)
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What Happens to Digital Feedback? : Studying the Use of a Feedback Capture Platform by Care Organisations
- 2017
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Ingår i: PROCEEDINGS OF THE 2017 ACM SIGCHI CONFERENCE ON HUMAN FACTORS IN COMPUTING SYSTEMS (CHI'17). - New York, NY, USA : ASSOC COMPUTING MACHINERY. ; , s. 5813-5825
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Konferensbidrag (refereegranskat)abstract
- In this paper we report on a four-month long field trial of ThoughtCloud, a feedback collection platform that allows people to leave ratings and audio or video responses to simple prompts. ThoughtCloud was trialled with four organisations providing care services for people with disabilities. We conducted interviews with staff and volunteers that used ThoughtCloud before, during and after its deployment, and workshops with service users and staff. While the collection of feedback was high, only one organisation regularly reviewed and responded to collected opinions. Furthermore, tensions arose around data access and sharing, and the mismatch of values between 'giving voice' and the capacity for staff to engage in feedback practices. We contribute insights into the challenges faced in using novel technologies in resource constrained organisations, and discuss opportunities for designs that give greater agency to service users to engage those that care for them in reflecting and responding to their opinions.
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| 7. |
- Goetz, Charlotte, et al.
(författare)
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The plasma environment of comet 67P/Churyumov-Gerasimenko
- 2022
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Ingår i: Space Science Reviews. - : Springer. - 0038-6308 .- 1572-9672. ; 218:8
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Forskningsöversikt (refereegranskat)abstract
- The environment of a comet is a fascinating and unique laboratory to study plasma processes and the formation of structures such as shocks and discontinuities from electron scales to ion scales and above. The European Space Agency's Rosetta mission collected data for more than two years, from the rendezvous with comet 67P/Churyumov-Gerasimenko in August 2014 until the final touch-down of the spacecraft end of September 2016. This escort phase spanned a large arc of the comet's orbit around the Sun, including its perihelion and corresponding to heliocentric distances between 3.8 AU and 1.24 AU. The length of the active mission together with this span in heliocentric and cometocentric distances make the Rosetta data set unique and much richer than sets obtained with previous cometary probes. Here, we review the results from the Rosetta mission that pertain to the plasma environment. We detail all known sources and losses of the plasma and typical processes within it. The findings from in-situ plasma measurements are complemented by remote observations of emissions from the plasma. Overviews of the methods and instruments used in the study are given as well as a short review of the Rosetta mission. The long duration of the Rosetta mission provides the opportunity to better understand how the importance of these processes changes depending on parameters like the outgassing rate and the solar wind conditions. We discuss how the shape and existence of large scale structures depend on these parameters and how the plasma within different regions of the plasma environment can be characterised. We end with a non-exhaustive list of still open questions, as well as suggestions on how to answer them in the future.
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| 8. |
- Kabath, Petr, et al.
(författare)
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TOI-2046b, TOI-1181b, and TOI-1516b, three new hot Jupiters from TESS: planets orbiting a young star, a subgiant, and a normal star
- 2022
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Ingår i: Monthly Notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 513:4, s. 5955-5972
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Tidskriftsartikel (refereegranskat)abstract
- We present the confirmation and characterization of three hot Jupiters, TOI-118 lb, TOI-1516b, and TOI-2046b, discovered by the "NESS space mission. The reported hot Jupiters have orbital periods between 1.4 and 2.05 d. The masses of the three planets are 1.18 +/- 0.14 Mj, 3.16 +/- 0.12 Mj, and 2.30 +/- 0.28 Mj, for TOI-1181b, TOI-1516b, and TOI-2046b, respectively. The stellar host of TOI-1181b is a F9IV star, whereas TOI-1516b and TOI-2046b orbit F main sequence host stars. The ages of the first two systems are in the range of 2-5 Gyrs. However, TOI-2046 is among the few youngest known planetary systems hosting a hot Jupiter, with an age estimate of 100-400 Myrs. The main instruments used for the radial velocity follow-up of these three planets are located at OndIejov, Tautenburg, and McDonald Observatory, and all three are mounted on 2-3 m aperture telescopes, demonstrating that mid-aperture telescope networks can play a substantial role in the follow-up of gas giants discovered by TESS and in the future by PLATO.
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| 9. |
- Rattay, Sonja, et al.
(författare)
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Sensing care through design : a speculative role-play approach to "living with" sensor-supported care networks
- 2023
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Ingår i: DIS '23. - : ACM Digital Library. - 9781450398930 ; , s. 1660-1675
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Konferensbidrag (refereegranskat)abstract
- Sensor networks are increasingly commonplace in visions of smart cities and future healthcare systems, promising greater efficiency and increased wellbeing. However, the design of these technologies remains focused on specific users and fragmented by context, overlooking the diversity of needs, wants and values present when technologies, people, and lived realities interact within instrumented spaces. In this paper we present a workshop method – Sensing Care – that can help researchers, interdisciplinary design and development teams, and potentially affected users, to explore what it takes to design for living with sensor technologies that intersect and interact across private and public spaces, through speculative scenarios and role play. Drawing from three deployments of the workshop, we discuss how this approach supports the design of future care-oriented sensor networks, and helps designers understand what it means to live with complex technologies as people traverse diverse contexts.
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| 10. |
- Saad-Sulonen, Joanna, 1976, et al.
(författare)
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Unfolding participation over time in the design of IT
- 2018
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Ingår i: CoDesign. - : Informa UK Limited. - 1571-0882 .- 1745-3755. ; 14:1, s. 1-3
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The aim of this special issue is to continue and contribute to the debate around the conceptualisations and understandings of participation in Participatory Design (PD) and related areas of human–computer interaction (HCI) research, recently invigorated by Vines et al. (2015 Vines, John, Rachel Clarke, Ann Light, and Peter Wright. 2015. “The Beginnings, Middles and Endings of Participatory Research in HCI: An Introduction to the Special Issue on ‘Perspectives on Participation’”, International Journal of Human-Computer Studies 74: 77–80.10.1016/j.ijhcs.2014.11.002), Halskov and Hansen (2015 Halskov, Kim, and Nicolai B. Hansen. 2015. “The Diversity of Participatory Design Research Practice at PDC 2002–2012”. International Journal of Human-Computer Studies 74: 81–92.10.1016/j.ijhcs.2014.09.003) and Saad-Sulonen et al. (2015 Saad-Sulonen, Joanna, Kim Halskov, Liesbeth Huybrechts, John Vines, Eva Eriksson, and Helena Karasti. 2015. “Unfolding Participation. What Do We Mean by Participation – Conceptually and in Practice”. In Proceedings of the 5th Decennial Aarhus Conference, Critical Alternatives – Vol. 2, 5–8. New York: ACM.). Ongoing transformations in IT-mediated participation in contemporary societies are challenging us to explore the changing nature of participation in IT design. Some of the questions that emerge relate to the need to rethink notions and practices of participation as they relate to temporality. We are now seeing a multitude of PD research and practice that range in temporal scale, from single projects taking place at one point in time to connected and hard to delineate projects that occur over years. Researchers are starting to acknowledge the significance of PD work that occurs in the background and in-between the typically reported on design activities conducted with participants. Furthermore, we’ve seen recent discussions emerge around the ways activities conducted both prior and after the typical project time of PD can impact and influence research and practice; from shaping eventual outcomes based on decisions made prior to involving participants in design, to considering the long-term sustainability, scalability and transferability of outcomes and learnings. As such, the temporal dimensions of PD are expanding greatly both conceptually and in practice. Our special issue aims to address these emerging areas of interest in PD.
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| 11. |
- Saad-Sulonen, Joanna, 1976, et al.
(författare)
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Unfolding participation over time: temporal lenses in participatory design
- 2018
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Ingår i: CoDesign. - : Informa UK Limited. - 1571-0882 .- 1745-3755. ; 14:1, s. 4-16
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Tidskriftsartikel (refereegranskat)abstract
- Participatory design (PD) research has historically strongly focused on the reporting of design events (e.g. workshops and prototyping activities with participants), where issues such as ‘involving users’, including the users’ point of view, and participation as a matter of mutual learning have been in the foreground. The need to further problematise and critically examine participation is nonetheless apparent. This special issue aims to shed light on participation as it unfolds over time during, between and beyond participatory events such as these. Here, we build an overview of existing directions taken by researchers to address the unfolding of participation in IT design over time. We do this by examining existing PD literature and the four contributions to this special issue. We identify two common temporalities in PD, the future-oriented and the project-based, and propose five lenses that may aid researchers in exploring and understanding the temporal dimensions of participation in their projects: the phasic, emergent, retrospective, prospective and long-term lenses. We end with propositions and opportunities for future research directions in PD, highlighting the multi-faceted nature of the temporality of participation.
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| 12. |
- Saad-Sulonen, Joanna, 1976, et al.
(författare)
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Unfolding Participation. What do we mean by participation – conceptually and in practice
- 2015
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Ingår i: Proceedings of The Fifth Decennial Aarhus Conference Critical Alternatives 17- 21 August 2015, Aarhus, Denmark. - : Det Kgl. Bibliotek/Royal Danish Library. ; , s. 5-8
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Konferensbidrag (refereegranskat)abstract
- The aim of the Unfolding Participation workshop is tooutline an agenda for the next 10 years of participatorydesign (PD) and participatory human computer interaction(HCI) research. We will do that through a double strategy:1) by critically interrogating the concept of participation(unfolding the concept itself), while at the same time, 2)reflecting on the way that participation unfolds acrossdifferent participatory configurations. We invite researchersand practitioners from PD and HCI and fields in whichinformation technology mediated participation is embedded(e.g. in political studies, urban planning, participatory arts,business, science and technology studies) to bring aplurality of perspectives and expertise related toparticipation.
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| 13. |
- Wood, Gavin, et al.
(författare)
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Designing for Digital Playing Out
- 2019
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Ingår i: CHI 2019. - New York, NY, USA : ASSOC COMPUTING MACHINERY.
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Konferensbidrag (refereegranskat)abstract
- We report on a design-led study in the UK that aimed to understand barriers to children (aged 5 to 14 years) 'playing out' in their neighbourhood and explore the potential of the Internet of Things (IoT) for supporting children's free play that extends outdoors. The study forms a design ethnography, combining observational fieldwork with design prototyping and co-creative activities across four linked workshops, where we used BBC micro:bit devices to co-create new IoT designs with the participating children. Our collective account contributes new insights about the physical and interactive features of micro:bits that shaped play, gameplay, and social interaction in the workshops, illuminating an emerging design space for supporting 'digital playing out' that is grounded in empirical instances. We highlight opportunities for designing for digital playing out in ways that promote social negotiation, supports varying participation, allows for integrating cultural influences, and accounts for the weaving together of placemaking and play.
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