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  • 1. Chaltiel, Stephanie
    et al.
    Bravo, Maite
    Goessens, Sebastien
    Latteur, Pierre
    Mansouri, Masoumeh
    Örebro University, School of Science and Technology.
    Ahmad, Ismael
    Dry and Liquid clay mix drone spraying for Bioshotcrete2018Conference paper (Refereed)
    Abstract [en]

    “Bioshotcrete” is a new technology being developed by a team of robotic experts, architects, engineers, and drones’ specialists, aiming at using drones in the construction industry to spray natural materials over a temporary light formwork until a self-standing shell is completed. This technique consists in projecting paste-like matter composed of clay mixes following precise and customized deposition sequences over a temporary formwork, incorporating computational techniques in the design and fabrication stages, therefore proposing a more sustainable version of shotcrete. In particular, this paper features experiments using drones for spraying wet and dry ranges of clay mixes over a reusable inflatable formwork with the purpose to build monolithic earthen shells. The featured case studies propose specific protocols to control different deposition sequences, describing the proper formulation of clay mixes, the design and production of customized spraying devices, and fitting options in the drone allowing to vary pressure and other drone spraying parameters. The development of Bioshotcrete using robotic fabrication strategies could help expand and transform existing construction methods and processes to be applied at large scale, therefore incorporating innovative digital fabrication protocols towards a more sustainable building construction realm.

  • 2. Kondyli, Vasiliki
    et al.
    Bhatt, Mehul
    Örebro University, School of Science and Technology.
    Rotational Locomotion in Large-Scale Environments: A Survey and Implications for Evidence-Based Design Practice2018In: Built Environment, ISSN 0263-7960, Vol. 44, no 2, p. 241-258Article in journal (Refereed)
    Abstract [en]

    Navigation performance in urban and large-scale built-up spaces (e.g. airports, train-stations, hospitals) depends on gradual environmental perception during locomotion, and spatial knowledge acquisition, update/integration at different times along a path. Rotational locomotion is regularly involved in everyday navigation; this, combined with the fact that people cannot perceive the whole of a large-scale setting at once often leads to incidents of cognitive loading and disorientation. Our research explores the mechanisms involved in rotational locomotion for human navigators, and the role of familiarity as well as the cost of cognitive load on orientation accuracy and spatial memory. We examine the impact of structural and featural cues on spatial knowledge updating in relation to egorotations from the viewpoint of behaviour-based design practice and evidencebased design interventions. The results are based on a case study in a train station, experimenting on rotational problems in navigation. Here we present preliminary results emphasizing the role of environmental cues in rotational location, outline possibilities for further study, and discuss implications for evidence-based design practice and cognitive design assistance technology development.

  • 3.
    Kondyli, Vasiliki
    et al.
    Örebro University, School of Science and Technology.
    Bhatt, Mehul
    Örebro University, School of Science and Technology.
    Hartmann, Timo
    Systems Engineering, Civil Engineering Institute, TU Berlin, Germany.
    Precedent Based Design Foundations for Parametric Design: The Case of Navigation and Wayfinding2018In: Advances in Computational Design, ISSN 2383-8477, Vol. 3, no 4, p. 339-366Article in journal (Refereed)
    Abstract [en]

    Parametric design systems serve as powerful assistive tools in the design process by providing a flexible approach for the generation of a vast number of design alternatives. However, contemporary parametric design systems focus primarily on low-level engineering and structural forms, without an explicit means to also take into account high-level, cognitively motivated people-centred design goals.

    We present a precedent-based parametric design method that integrates people-centred design “precedents” rooted in empirical evidence directly within state of the art parametric design systems. As a use-case, we illustrate the general method in the context of an empirical study focusing on the multi-modal analysis of wayfinding behaviour in two large-scale healthcare environments. With this use-case, we demonstrate the manner in which: (1). a range of empirically established design precedents —e.g., pertaining to visibility and navigation— may be articulated as design constraints to be embedded directly within state of the art parametric design tools (e.g., Grasshopper); and (2). embedded design precedents lead to the (parametric) generation of a number of morphologies that satisfy people-centred design criteria (in this case, pertaining to wayfinding).

    Our research presents an exemplar for the integration of cognitively motivated design goals with parametric design-space exploration methods. We posit that this opens-up a range of technological challenges for the engineering and development of next-generation computer aided architecture design systems.

  • 4.
    Kondyli, Vasiliki
    et al.
    University of Bremen, Bremen, Germany.
    Bhatt, Mehul
    Örebro University, School of Science and Technology. University of Bremen, Bremen, Germany.
    Hartmann, Timo
    Technische Universität Berlin, Berlin, Germany.
    Towards Precedent Based Design Foundations for Parametric Design Systems2017In: Proceedings of the 24th EG-ICE International Workshop on Intelligent Computing in Engineering (EG-ICE 2017) / [ed] Christian Koch; Walid Tizani; Jelena Ninic, European Group for Intelligent Computing in Engineering (EG-ICE) , 2017, p. 178-187Conference paper (Refereed)
  • 5.
    Pettersson, Cecilia
    et al.
    Department of Health Sciences, Lund University, Lund, Sweden.
    Slaug, Björn
    Department of Health Sciences, Lund University, Lund, Sweden.
    Granbom, Marianne
    Department of Health Sciences, Lund University, Lund, Sweden.
    Kylberg, Marianne
    Department of Health Sciences, Lund University, Lund, Sweden.
    Iwarsson, Susanne
    Department of Health Sciences, Lund University, Lund, Sweden.
    Housing accessibility for senior citizens in Sweden: Estimation of the effects of targeted elimination of environmental barriers.2018In: Scandinavian Journal of Occupational Therapy, ISSN 1103-8128, E-ISSN 1651-2014, Vol. 25, no 6, p. 407-418Article in journal (Refereed)
    Abstract [en]

    AIM: To estimate the effects of targeted elimination of environmental barriers (EB) in the ordinary housing stock in Sweden, and to explore the estimated effects on accessibility at a population level in relation to (a) residents with different functional profiles, (b) different housing types and (c) building periods.

    METHOD: Data on dwellings from existing Swedish research databases were utilized. EB and accessibility were assessed by means of the Housing Enabler instrument. In simulations of EB removal, five items that correspond to the most common housing adaptations were selected. The simulations were applied to four functional profiles of different complexity.

    RESULT: EB known to be commonly removed by housing adaptations exist in large proportions of the existing ordinary housing stock. Estimated targeted elimination of selected barriers would have the largest accessibility effects for the more complex functional profiles. The effects would be consistently larger for one-family houses, and for all types of dwellings built before 1960.

    CONCLUSIONS: The elimination of the EB most commonly addressed by housing adaptations could result in a reduction of the housing accessibility problems that community-living older people are facing. For society to solve the housing situation for the ageing population well-informed and efficient upgrading of ordinary housing is imperative.

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