Chapters in a book

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    A dual band frequency reconfigurable metasurface antenna
    (IGI Global, 2021) Ulomi, George Shilela; Kilavo, Hassan
    In this chapter, a single feed metasurface antenna with smooth dual-band frequency reconfiguration is proposed. The designed antenna has a simple and compact structure to be used in portable wireless communication devices. The antenna consists of two circular layers of substrate material placed one on top of the other. The lower layer is printed with a rectangular patch antenna in one side, and the other side is a ground plane. The upper substrate layer lay on top of patch antenna side is printed with a number of unit-cells on its upper side. To achieve frequency reconfiguration, the upper substrate layer is mechanically rotated at an angle θz in a clockwise direction along Z-axis. Based on rotation angle, the antenna scattering parameters (S11 and S21) of the unit cell are subjected to change which thereby affects relative permittivity of the upper layer resulting to a frequency reconfiguration.
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    An ethnographically informed participatory design of primary healthcare information technology in a developing country setting
    (PubMed, 2017) Shidende, Nima H.; Igira, Faraja T.; Mörtberg, Christina M.
    Ethnography, with its emphasis on understanding activities where they occur, and its use of qualitative data gathering techniques rich in description, has a long tradition in Participatory Design (PD). Yet there are limited methodological insights in its application in developing countries. This paper proposes an ethnographically informed PD approach, which can be applied when designing Primary Healthcare Information Technology (PHIT). We use findings from a larger multidisciplinary project, Health Information Systems Project (HISP) to elaborate how ethnography can be used to facilitate participation of health practitioners in developing countries settings as well as indicating the importance of ethnographic approach to participatory Health Information Technology (HIT) designers. Furthermore, the paper discusses the pros and cons of using an ethnographic approach in designing HIT.