Browsing by Author "Cortez, C."

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    Learning to collaborate by collaborating: a face-to-face collaborative activity for measuring and learning basics about teamwork
    (WILEY, 2009) Cortez, C.; Nussbaum, M.; Woywood, G.; Aravena, R.
    In today's fast-changing business environment, teams have emerged as a requirement for business success. However, in schools and universities, students are usually not taught teamwork skills. In this paper, we introduce learning to collaborate by collaborating, a process that enables collaboration and teamwork skills to be taught and measured through face-to-face collaborative work and class-wide activities supported by wirelessly connected hand-held devices. Following a description of learning to collaborate by collaborating, we present an experimental study whose results demonstrate that participants in the process displayed improved teamwork performance. We conclude that it is possible to effectively teach collaboration skills through the use of immediate feedback provided by a supporting technology.
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    Performance of an RC building under seismic and tsunami actions in sequence via nonlinear dynamic analysis including soil-structure interaction
    (2022) Cortez, C.; Junemann, R.; Fernandez, C.; Urrutia, A.; Crempien, J. G. F.; Cienfuegos, R.
    This research presents a methodology to study the behavior of buildings subjected to seismic and tsunami loading in sequence, considering soil structure interaction effects through a complete dynamic analysis. The case-study building is an RC frame, which is assumed to be located in a coastal city in Chile, and built on sandy soil. A 3D Soil-Structure Interaction (SSI) model, including the non-linear behavior of both the structure and the soil using finite element method (FEM) was presented. Synthetic seismic ground motion records and tsunami inundation time histories were generated, consistent with the same earthquake source. Building performance was first assessed considering the SSI model for each hazard separately and compared to a Fixed Base (FB) model. Then, the SSI model was subjected to seismic and tsunami loading in sequence. Engineering Demand Parameters (EDPs) of roof displacement, interstory drift ratio (IDR) and reinforcement strain in beams and columns were analyzed. These EDPs presented a larger response to the tsunami when the response to the previous earthquake was larger. Finally, two vertical evacuation building scenarios were studied: the location of the refugees and the effect of an aftershock occurring simultaneously with the tsunami inundation. Results showed that the location of the ref-ugees did not generate significant differences in the building response, and the aftershock increased the response only when it coincided with the maximum tsunami force.
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    Teachers' support with ad-hoc collaborative networks
    (2005) Cortez, C.; Nussbaum Voehl, Miguel; López, X.; Rodríguez Díaz, Paulina Andrea; Santelices, R.; Rosas Díaz, Ricardo; Marianov Kluge, Vladimir