Open University of Catalonia

About: Open University of Catalonia is a education organization based out in Barcelona, Spain. It is known for research contribution in the topics: Context (language use) & Higher education. The organization has 1943 authors who have published 4646 publications receiving 64200 citations. The organization is also known as: Universitat Oberta de Catalunya & UOC.

How do biosphere reserves influence local vulnerability and adaptation? Evidence from Latin America

Abstract: Resource management regulations, such as those associated with the establishment of protected areas, can increase vulnerability and compromise individual and collective agency for adaptation. In this article, we comparatively analyse how four rural communities located within two biosphere reserves in Mexico and Bolivia experience vulnerability and adaptation to global change. We use focus groups, interviews and scoring exercises to analyse the influence of reserve management practices on locally perceived changes and stresses on livelihoods, and to discuss communities’ coping and adaptation strategies. We show that both reserves are perceived as a source of stress but somewhat differently. In Mexico, communities feel vulnerable to the reserve's regulations but less to climatic and economic stresses, whereas in Bolivia communities perceive the insufficient enforcement of the reserve's rules as the most relevant stress to their livelihoods. Most of household-based and collective adaptations to environmental change have been adopted without the support of the biosphere reserves. We discuss how and why the biosphere reserves contribute to local vulnerability and why their role in enhancing local adaptation is limited.

Recommendations on Formative Assessment and Feedback Practices for stronger engagement in MOOCs

Abstract: Many publications and surveys refer to the high drop out rate in Massive Open Online Courses (MOOCs) which is around 90%, especially if we compare the number of students who register against those who finish. Working towards improving student engagement in MOOCs, we focus on providing specific research-based recommendations on formative assessment and feedback practices that can advance student activity. In this respect, we analysed some significant research papers on formative assessment and feedback methods applicable to face-to-face teaching environments that advance student engagement, and concluded with related requirements and conditions that can be applied also to MOOCs. We also analysed 4050 comments and reviews of the seven most active and highly rated MOOCs (6 Coursera ones and 1 from EdX) provided by the students who have mainly completed those courses via CourseTalk. Based on this content analysis, we have formulated fourteen recommendations that support also the requirements/conditions of our conceptual and theoretical framework analysis. The results obtained shed some light in a rather unexplored research area, which is the research on formative assessment and feedback practices specifically for stronger engagement in MOOCs.

Broadcasting strategies in 6TiSCH networks

Abstract: We consider IPv6-enabled networks that run on top of the time-slotted channel hopping mode of IEEE802.15.4 (6TiSCH). The ongoing discussions in the standardization community concern the network formation process and the definition of a bootstrapping protocol by which a new mote is admitted into the network. Because the bootstrapping trac uses the same shared slots as the network broadcasts, the key to the optimal performance of the network formation process lays in the optimization of the network broadcasting strategy. The problem boils down to the issue of stabilizing slotted Aloha. To do so, we adapt a broadcast algorithm to the specifics of 6TiSCH networks. By simulation, we evaluate the optimal broadcast transmission probability in the network. We answer the open questions in the IETF 6TiSCH standardization community that concern the performance of the network formation process for the optimal values of transmission probability. As the main contribution of the letter, we provide network administrators with a set of values that allow the formation of dense networks.

Intonation and gesture as bootstrapping devices in speaker uncertainty

Abstract: This study investigates 3- to 5-year-old children’s sensitivity to lexical, intonational and gestural information in the comprehension of speaker uncertainty. Most previous studies on children’s understanding of speaker certainty and uncertainty across languages have focused on the comprehension of lexical markers, and little is known about the potential facilitation effects of intonational and gestural features in this process. A total of 102 3- to 5-year-old Catalan-speaking children participated in a comprehension task which involved the detection of uncertainty in materials that combined lexical, intonational and gestural markers. In a between-subjects design, the children were either administered the lexical condition (where they were exposed to lexical and gestural cues to uncertainty) or the intonation condition (where they were exposed to intonational and gestural cues to uncertainty). Within each condition, three different presentation formats were used (audio-only, visual-only and audio-visual) ...

Periodismo computacional: evolución, casos y herramientas

Abstract: El periodismo computacional ha irrumpido con fuerza en el intenso panorama de las innovaciones periodisticas, debido a su gran potencial de impacto en las redacciones. Dada la reciente implantacion de esta especialidad, todavia en fase experimental en las redacciones que lo han incorporado, en este trabajo presentamos un resultado de tipo exploratorio sobre el periodismo computacional, a la vez que lo relacionamos con variaciones bien implantadas del periodismo, como el periodismo de datos. El trabajo se ha realizado a partir de la revision bibliografica y de los principales informes sobre esta materia, asi como a partir de una serie de estudios de caso. Los resultados pueden ayudar tanto a enfocar nuevas investigaciones en este campo, como a completar el panorama de la innovacion para profesionales e investigadores del sector que necesiten disponer de una vision global del impacto que puede alcanzar el periodismo computacional.