Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
Permanent URI for this collectionhttps://hdl.handle.net/11147/7148
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Article Citation - WoS: 1Citation - Scopus: 1Dealing With Divergent Feedback Trajectories in Video-Mediated, Transnational, and Collaborative Task Design Meetings(Elsevier Sci Ltd, 2025) Colak, Fulya; Balaman, UfukThis study investigates mutual pedagogical decision making among transnational groups of preservice teachers (from Austria and T & uuml;rkiye) involved in finalizing the design of telecollaborative tasks after receiving multimodal feedback from different teacher educators. Within the scope of a Virtual Exchange project, while the teacher educator from the Turkish university conducted a large-group, whole-class, video-mediated meeting offering feedback, the teacher educator from the Austrian university preferred delivering written feedback. Examining the screen-recordings of pre-service teachers' video-mediated meetings and the diverse feedback sources, we found that the divergent feedback trajectories provide opportunities for pedagogical design-related decision making and meaning negotiation for pre-service teachers. The findings also show the synergies between the multilayered frameworks of participation and engagement in situ and bring new insights into the interactional management of video-mediated learning environments.Article Citation - WoS: 6Citation - Scopus: 9Adaptive Limited Feedback Links for Cooperative Multi-Antenna Multicell Networks(Springer Verlag, 2014) Özbek, Berna; Ruyet, Didier LeThe overall performance of cooperative networks is quite sensitive to channel state information (CSI) of serving and interfering base stations (BSs) and affected strongly by quality of limited feedback links. In this paper, we propose two adaptive limited feedback strategies for intercell interference cancelation in multi-antenna multicell networks. The first proposed strategy is developed to improve average multicell capacity assuming a fixed rate feedback link. This algorithm is based on adaptation of the number of bits to quantize CSI of serving and interfering BSs according to transmitter power and location of the user in its own cell. The second proposed strategy is designed in a way to increase average capacity of cell-edge users assuming an adaptive rate feedback link. This algorithm is based on the idea of allocating more bits to quantize CSI of users at cell-edge regions while allocating less bits for users near the serving BS. We illustrate performance of the proposed feedback links for downlink cooperative multi-antenna multicell networks in wireless channels.