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    Dr. Leonardo Ramirez

    leoramirez

    Former colleague

    Vitae

    Since 2005 Leonardo is a researcher and PhD candidate working at Fraunhofer FIT. Since 2008 he is also working at University of Siegen. His current research explores ways of provide digitally mediated contextual information as a resource for building new practices. More specifically, he is studying how to use technology available today to support indoor navigation of firefighters in unknown spaces under low-visibility conditions. Leonardo manages the open design project at Fraunhofer FIT. He holds an engineering degree in Computer Science and M.Sc.Eng degree on Software Architecture from the Universidad Católica de Chile and holds currently a Scholarship from the German Academic Exchange Service, DAAD.

    Publications

    2018


    • Randall, D., Dachtera, J., Dyrks, T., Nett, B., Pipek, V., Ramirez, L., Stevens, G., Wagner, I. & Wulf, V. (2018)Research into Design Research Practices: Supporting an Agenda towards Self-Reflectivity and Transferability

      IN Wulf, V., Pipek, V., Randall, D., Rohde, M., Schmidt, K. & Stevens, G. (Eds.), Socio-Informatics – A Practice-based Perspective on the Design and Use of IT Artefacts
      [BibTeX] [Download PDF]

      @incollection{randall_research_2018,
      title = {Research into {Design} {Research} {Practices}: {Supporting} an {Agenda} towards {Self}-{Reflectivity} and {Transferability}},
      isbn = {978-0-19-873324-9},
      url = {http://www.wineme.uni-siegen.de/wp-content/uploads/2018/04/Section-4-Meta-Analysis.pdf},
      booktitle = {Socio-{Informatics} - {A} {Practice}-based {Perspective} on the {Design} and {Use} of {IT} {Artefacts}},
      publisher = {Oxford University Press},
      author = {Randall, Dave and Dachtera, Juri and Dyrks, Tobias and Nett, Bernhard and Pipek, Volkmar and Ramirez, Leonardo and Stevens, Gunnar and Wagner, Ina and Wulf, Volker},
      editor = {Wulf, Volker and Pipek, Volkmar and Randall, David and Rohde, Markus and Schmidt, Kjeld and Stevens, Gunnar},
      year = {2018},
      keywords = {CSCW, PRAXLABS, MdK},
      pages = {491--540},
      }

    2015


    • Schwartz, T., Stevens, G., Jakobi, T., Denef, S., Ramirez, L., Wulf, V. & Randall, D. (2015)What people do with consumption feedback: a long-term living lab study of a home energy management system

      IN Interacting with Computers, Vol. 27, Pages: 551–576
      [BibTeX]

      @article{schwartz_what_2015,
      title = {What people do with consumption feedback: a long-term living lab study of a home energy management system},
      volume = {27},
      issn = {0953-5438},
      number = {6},
      journal = {Interacting with Computers},
      author = {Schwartz, Tobias and Stevens, Gunnar and Jakobi, Timo and Denef, Sebastian and Ramirez, Leonardo and Wulf, Volker and Randall, Dave},
      year = {2015},
      keywords = {sustainability, user studies, empirical studies in interaction design},
      pages = {551--576},
      }

    2014


    • Schwartz, T., Stevens, G., Jakobi, T., Denef, S., Ramirez, L., Wulf, V. & Randall, D. (2014)What People Do with Consumption Feedback: A Long-Term Living Lab Study of a Home Energy Management System

      IN Interacting with Computers, Vol. 27, Pages: 1–26 doi:10.1093/iwc/iwu009
      [BibTeX] [Abstract] [Download PDF]

      One of the great societal challenges that we face today concerns the move to more sustainable patterns of energy consumption, reflecting the need to balance both individual consumer choice and societal demands. In order for this ‘energy turnaround’ to take place, however, reducing residential energy consumption must go beyond using energy-efficient devices: More sustainable behaviour and lifestyles are essential parts of future ‘energy aware’ living. Addressing this issue from an HCI perspective, this paper presents the results of a 3-year research project dealing with the co-design and appropriation of a Home Energy Management System (HEMS) that has been rolled out in a living lab setting with seven households for a period of 18 months. Our HEMS is inspired by feedback systems in Sustainable Interaction Design and allows the monitoring of energy consumption in real-time. In contrast to existing research mainly focusing on how technology can persuade people to consume less energy (‘what technology does to people’), our study focuses on the appropriation of energy feedback systems (‘what people do with technology’) and how newly developed practices can become a resource for future technology design. Therefore, we deliberately followed an open research design. In keeping with this approach, our study uncovers various responses, practices and obstacles of HEMS use. We show that HEMS use is characterized by a number of different features. Recognizing the distinctive patterns of technology use in the different households and the evolutionary character of that use within the households, we conclude with a discussion of these patterns in relation to existing research and their meaning for the design of future HEMSs.

      @article{schwartz_what_2014,
      title = {What {People} {Do} with {Consumption} {Feedback}: {A} {Long}-{Term} {Living} {Lab} {Study} of a {Home} {Energy} {Management} {System}},
      volume = {27},
      issn = {0953-5438, 1873-7951},
      url = {http://iwc.oxfordjournals.org/content/early/2014/04/05/iwc.iwu009 https://doi.org/10.1093/iwc/iwu009},
      doi = {10.1093/iwc/iwu009},
      abstract = {One of the great societal challenges that we face today concerns the move to more sustainable patterns of energy consumption, reflecting the need to balance both individual consumer choice and societal demands. In order for this ‘energy turnaround' to take place, however, reducing residential energy consumption must go beyond using energy-efficient devices: More sustainable behaviour and lifestyles are essential parts of future ‘energy aware' living. Addressing this issue from an HCI perspective, this paper presents the results of a 3-year research project dealing with the co-design and appropriation of a Home Energy Management System (HEMS) that has been rolled out in a living lab setting with seven households for a period of 18 months. Our HEMS is inspired by feedback systems in Sustainable Interaction Design and allows the monitoring of energy consumption in real-time. In contrast to existing research mainly focusing on how technology can persuade people to consume less energy (‘what technology does to people'), our study focuses on the appropriation of energy feedback systems (‘what people do with technology') and how newly developed practices can become a resource for future technology design. Therefore, we deliberately followed an open research design. In keeping with this approach, our study uncovers various responses, practices and obstacles of HEMS use. We show that HEMS use is characterized by a number of different features. Recognizing the distinctive patterns of technology use in the different households and the evolutionary character of that use within the households, we conclude with a discussion of these patterns in relation to existing research and their meaning for the design of future HEMSs.},
      number = {6},
      journal = {Interacting with Computers},
      author = {Schwartz, Tobias and Stevens, Gunnar and Jakobi, Timo and Denef, Sebastian and Ramirez, Leonardo and Wulf, Volker and Randall, Dave},
      year = {2014},
      keywords = {PRAXLABS, SMARTLIVE, sustainability, design, DBL, editorial board member, empirical studies in interaction, interacting with computers, user studies},
      pages = {1--26},
      annote = {Publisher: Oxford University Press},
      }


    • Al-Akkad, A., Raffelsberger, C., Boden, A., Ramirez, L. & Zimmermann, A. (2014)Tweeting ‘when online is off’? opportunistically creating mobile ad-hoc networks in response to disrupted infrastructure

      Proceedings of the 11th International Conference on Information Systems for Crisis Response and Management. University Park, Pennsylvania.
      [BibTeX]

      @inproceedings{al-akkad_tweeting_2014,
      title = {Tweeting ‘when online is off'? opportunistically creating mobile ad-hoc networks in response to disrupted infrastructure},
      booktitle = {Proceedings of the 11th {International} {Conference} on {Information} {Systems} for {Crisis} {Response} and {Management}. {University} {Park}, {Pennsylvania}},
      author = {Al-Akkad, Amro and Raffelsberger, Christian and Boden, Alexander and Ramirez, Leonardo and Zimmermann, Andreas},
      year = {2014},
      }


    • Al-Akkad, A., Raffelsberger, C., Boden, A., Ramirez, L. & Zimmermann, A. (2014)Tweeting ‘When Online is Off’? Opportunistically Creating Mobile Ad-hoc Networks in Response to Disrupted Infrastructure

      , Pages: 10
      [BibTeX] [Abstract]

      In this paper, we present a system that enables people to post and receive tweets despite disruptions of existing network infrastructure. Our system opportunistically deploys mobile ad hoc networks (MANETs) based on Wi-Fi in which people can communicate with each other in a peer-to-peer fashion. A MANET per se constitutes an isolated island, but as people carry devices around that can join other MANETs, eventually people can transport previously collected data to the online world. Compared to other systems that aim to enable communication in crisis, our system differs in two ways: it does not rely on existing network infrastructure, and it exploits established protocols and standards allowing it to run on off-the-shelf, commercially available smartphones. We evaluated our prototype with a group of students and practitioners. Overall, we received positive feedback on the potential of our technology, but also were pointed to limitations requiring future work.

      @article{al-akkad_tweeting_2014-1,
      title = {Tweeting ‘{When} {Online} is {Off}’? {Opportunistically} {Creating} {Mobile} {Ad}-hoc {Networks} in {Response} to {Disrupted} {Infrastructure}},
      abstract = {In this paper, we present a system that enables people to post and receive tweets despite disruptions of existing network infrastructure. Our system opportunistically deploys mobile ad hoc networks (MANETs) based on Wi-Fi in which people can communicate with each other in a peer-to-peer fashion. A MANET per se constitutes an isolated island, but as people carry devices around that can join other MANETs, eventually people can transport previously collected data to the online world. Compared to other systems that aim to enable communication in crisis, our system differs in two ways: it does not rely on existing network infrastructure, and it exploits established protocols and standards allowing it to run on off-the-shelf, commercially available smartphones. We evaluated our prototype with a group of students and practitioners. Overall, we received positive feedback on the potential of our technology, but also were pointed to limitations requiring future work.},
      language = {en},
      author = {Al-Akkad, Amro and Raffelsberger, Christian and Boden, Alexander and Ramirez, Leonardo and Zimmermann, Andreas},
      year = {2014},
      pages = {10},
      }

    2013


    • Schwartz, T., Stevens, G., Ramirez, L. & Wulf, V. (2013)Uncovering Practices of Making Energy Consumption Accountable: A Phenomenological Inquiry

      IN ACM Transactions on Computer-Human Interaction (ToCHI), Vol. 20, Pages: Art. No. 12 doi:10.1145/2463579.2463583
      [BibTeX] [Download PDF]

      @article{schwartz_uncovering_2013,
      title = {Uncovering {Practices} of {Making} {Energy} {Consumption} {Accountable}: {A} {Phenomenological} {Inquiry}},
      volume = {20},
      issn = {1073-0516},
      url = {http://doi.acm.org/10.1145/2463579.2463583},
      doi = {10.1145/2463579.2463583},
      number = {2},
      journal = {ACM Transactions on Computer-Human Interaction (ToCHI)},
      author = {Schwartz, Tobias and Stevens, Gunnar and Ramirez, Leonardo and Wulf, Volker},
      year = {2013},
      keywords = {PRAXLABS, Energy, phenomenology, SMARTLIVE, sustainability},
      pages = {Art. No. 12},
      annote = {Place: New York, NY, USA Publisher: ACM},
      }


    • Al Akkad, A., Ramirez, L., Denef, S., Boden, A., Wood, L., Büscher, M. & Zimmermann, A. (2013)Reconstructing normality: The use of infrastructure leftovers in crisis situations as inspiration for the design of resilient technology

      Proceedings of OzCHI. Adelaide, Australia
      [BibTeX]

      @inproceedings{al_akkad_reconstructing_2013,
      address = {Adelaide, Australia},
      title = {Reconstructing normality: {The} use of infrastructure leftovers in crisis situations as inspiration for the design of resilient technology},
      booktitle = {Proceedings of {OzCHI}},
      author = {Al Akkad, Amro and Ramirez, Leonardo and Denef, Sebastian and Boden, Alexander and Wood, Lisa and Büscher, Monika and Zimmermann, Andreas},
      year = {2013},
      }


    • Schwartz, T., Denef, S., Stevens, G., Ramirez, L. & Wulf, V. (2013)Cultivating Energy Literacy: Results from a Longitudinal Living Lab Study of a Home Energy Management System

      Proceedings of CHI ’13. New York, NY, USA, Publisher: ACM, Pages: 1193–1202 doi:10.1145/2470654.2466154
      [BibTeX] [Abstract] [Download PDF]

      This paper presents results of a three-year research project focused on the emplacement of Home Energy Management Systems (HEMS) in a living lab setting with seven households. The HEMS used in this study allowed householders to monitor energy consumption both in realtime and in retrospective on the TV and on mobile devices. Contrasting with existing research focused on how technology persuades people to consume less energy, our study uses a grounded approach to analyze HEMS emplacement. As an important result, we present here the issue of ‘energy literacy’. Our study reveals that, by using HEMS, participants became increasingly literate in understanding domestic electricity consumption. We discuss the role HEMS played in that process and how the acquired literacy changed energy consumption patterns. We conclude that literacy in energy consumption has value on its own and explain how eco feedback system designs can benefit from this understanding. Copyright © 2013 ACM.

      @inproceedings{schwartz_cultivating_2013,
      address = {New York, NY, USA},
      series = {{CHI} '13},
      title = {Cultivating {Energy} {Literacy}: {Results} from a {Longitudinal} {Living} {Lab} {Study} of a {Home} {Energy} {Management} {System}},
      isbn = {978-1-4503-1899-0},
      url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84877999779&partnerID=40&md5=0f531b7b46008d99297158e1951b58a2 http://doi.acm.org/10.1145/2470654.2466154},
      doi = {10.1145/2470654.2466154},
      abstract = {This paper presents results of a three-year research project focused on the emplacement of Home Energy Management Systems (HEMS) in a living lab setting with seven households. The HEMS used in this study allowed householders to monitor energy consumption both in realtime and in retrospective on the TV and on mobile devices. Contrasting with existing research focused on how technology persuades people to consume less energy, our study uses a grounded approach to analyze HEMS emplacement. As an important result, we present here the issue of 'energy literacy'. Our study reveals that, by using HEMS, participants became increasingly literate in understanding domestic electricity consumption. We discuss the role HEMS played in that process and how the acquired literacy changed energy consumption patterns. We conclude that literacy in energy consumption has value on its own and explain how eco feedback system designs can benefit from this understanding. Copyright © 2013 ACM.},
      booktitle = {Proceedings of {CHI} '13},
      publisher = {ACM},
      author = {Schwartz, Tobias and Denef, Sebastian and Stevens, Gunnar and Ramirez, Leonardo and Wulf, Volker},
      year = {2013},
      keywords = {PRAXLABS, Energy literacy, Energy monitoring, HEMS, a-paper},
      pages = {1193--1202},
      }


    • Schwartz, T., Stevens, G., Ramirez, L. & Wulf, V. (2013)Uncovering practices of making energy consumption accountable

      IN ACM Transactions on Computer-Human Interaction (ToCHI), Vol. 20, Pages: 1–30 doi:10.1145/2463579.2463583
      [BibTeX] [Download PDF]

      @article{schwartz_uncovering_2013-1,
      title = {Uncovering practices of making energy consumption accountable},
      volume = {20},
      issn = {10730516},
      url = {http://dl.acm.org/citation.cfm?doid=2463579.2463583},
      doi = {10.1145/2463579.2463583},
      number = {2},
      journal = {ACM Transactions on Computer-Human Interaction (ToCHI)},
      author = {Schwartz, Tobias and Stevens, Gunnar and Ramirez, Leonardo and Wulf, Volker},
      month = may,
      year = {2013},
      keywords = {A-Paper},
      pages = {1--30},
      }

    2012


    • Ramirez, L., Dyrks, T., Gerwinski, J., Betz, M., Scholz, M. & Wulf, V. (2012)Landmarke: An ad hoc deployable ubicomp infrastructure to support indoor navigation of firefighters

      IN Personal and Ubiquitous Computing, Vol. 16, Pages: 1025–1038 doi:10.1007/s00779-011-0462-5
      [BibTeX] [Abstract]

      Indoor navigation plays a central role for the safety of firefighters. The circumstances in which a firefighting intervention occurs represent a rather complex challenge for the design of supporting technology. In this paper, we present the results of our work designing an ad hoc ubicomp infrastructure to support navigation of firefighters working in structure fires inside the zone of danger. We take a wider approach, complementing the technical questions with the development of effective navigation practices based on technology available today. We provide an overview of the complete design process, from the theoretical and empirical underpinnings to the construction and evaluation of three iterations of the platform. We report the results of our evaluation and the implications and tensions uncovered in this process, and we discuss the challenges and implications of it for the design of ubicomp for firefighters.

      @article{ramirez_landmarke_2012,
      title = {Landmarke: {An} ad hoc deployable ubicomp infrastructure to support indoor navigation of firefighters},
      volume = {16},
      issn = {16174909},
      doi = {10.1007/s00779-011-0462-5},
      abstract = {Indoor navigation plays a central role for the safety of firefighters. The circumstances in which a firefighting intervention occurs represent a rather complex challenge for the design of supporting technology. In this paper, we present the results of our work designing an ad hoc ubicomp infrastructure to support navigation of firefighters working in structure fires inside the zone of danger. We take a wider approach, complementing the technical questions with the development of effective navigation practices based on technology available today. We provide an overview of the complete design process, from the theoretical and empirical underpinnings to the construction and evaluation of three iterations of the platform. We report the results of our evaluation and the implications and tensions uncovered in this process, and we discuss the challenges and implications of it for the design of ubicomp for firefighters.},
      number = {8},
      journal = {Personal and Ubiquitous Computing},
      author = {Ramirez, Leonardo and Dyrks, Tobias and Gerwinski, Jan and Betz, Matthias and Scholz, Markus and Wulf, Volker},
      year = {2012},
      keywords = {Human-computer interaction, Ad hoc deployment, Firefighting, Indoor navigation, Landmarke, Mobile ad hoc network, Navigation, Orientation, Sensor networks, Ubiquitous computing, Wearable computing},
      pages = {1025--1038},
      annote = {ISBN: 0077901104625},
      }


    • Ramirez, L. (2012)Practice-Centered Support for Indoor Navigation: Design of a Ubicomp Platform for Firefighters

      [BibTeX] [Download PDF]

      @book{ramirez_practice-centered_2012,
      title = {Practice-{Centered} {Support} for {Indoor} {Navigation}: {Design} of a {Ubicomp} {Platform} for {Firefighters}},
      url = {http://www.wineme.uni-siegen.de/wp-content/uploads/2016/11/diss_ramirez_indoor-navi-ubicomp-platform_2012.pdf},
      author = {Ramirez, Leonardo},
      year = {2012},
      keywords = {Dissertation},
      }

    2010


    • Schwartz, T., Betz, M., Ramirez, L. & Stevens, G. (2010)Sustainable energy practices at work: understanding the role of workers in energy conservation

      Proceedings of the Nordic Conference on Human-Computer Interaction., Pages: 452–462
      [BibTeX] [Download PDF]

      @inproceedings{schwartz_sustainable_2010,
      title = {Sustainable energy practices at work: understanding the role of workers in energy conservation},
      shorttitle = {Sustainable energy practices at work},
      url = {http://dl.acm.org/citation.cfm?id=1868966},
      booktitle = {Proceedings of the {Nordic} {Conference} on {Human}-{Computer} {Interaction}},
      author = {Schwartz, Tobias and Betz, Matthias and Ramirez, Leonardo and Stevens, Gunnar},
      year = {2010},
      keywords = {PRAXLABS},
      pages = {452--462},
      }

    2009


    • Ramirez, L., Denef, S. & Dyrks, T. (2009)Towards human-centered support for indoor navigation

      IN Proceedings of the Conference on Human Factors in Computing Systems (CHI), Pages: 1279–1282 doi:10.1145/1518701.1518893
      [BibTeX] [Abstract]

      This paper presents a new perspective for the design of indoor navigation support. In contrast to technology oriented approaches coming from Context Awareness research, we argue for a wider focus that complements the technical question of providing precise indoor location with the development of more effective navigation practices based on technology available today. Starting from research on indoor navigation conducted with the Paris Fire Brigade, we present two design concepts aimed at supporting firefighters in creating and finding their own paths, together with some of the design strategies that informed the creation of these concepts.

      @article{ramirez_towards_2009,
      title = {Towards human-centered support for indoor navigation},
      doi = {10.1145/1518701.1518893},
      abstract = {This paper presents a new perspective for the design of indoor navigation support. In contrast to technology oriented approaches coming from Context Awareness research, we argue for a wider focus that complements the technical question of providing precise indoor location with the development of more effective navigation practices based on technology available today. Starting from research on indoor navigation conducted with the Paris Fire Brigade, we present two design concepts aimed at supporting firefighters in creating and finding their own paths, together with some of the design strategies that informed the creation of these concepts.},
      journal = {Proceedings of the Conference on Human Factors in Computing Systems (CHI)},
      author = {Ramirez, Leonardo and Denef, Sebastian and Dyrks, Tobias},
      year = {2009},
      keywords = {A-Paper},
      pages = {1279--1282},
      annote = {ISBN: 9781605582467},
      }