RelicPad: A Hands-On, Mobile Approach to Collaborative Exploration of Virtual Museum Artifacts

Abstract. In an ideal world, physical museum artefacts could be touched, handled, examined and passed between interested viewers by hand. Unfortunately, this is not always possible – artefacts may be too fragile to handle or pass around, or groups of people with mutual interests in objects may not be in the same location. This can be problematic when attempting to explain or make sense of the physical properties of artefacts. To address these problems, we propose that direct manipulation of 3D content based on real-world interaction metaphors can help collaborators (both co and remotely located) to construct personal and mutual physical and spatial awareness of artefacts, while networked communication and collaboration allow for ideas and knowledge to be exchanged and shared. We present our interpretations from two studies of RelicPad, a tablet-based application that allows users to manually manipulate museum artefacts and to ‘point out ’ areas of interest to each other using 3D annotations, facilitating a mutual awareness of spatial properties and referencing during discussion

Cluster analysis

Trabajo de investigaciónSe desarrolló un Componente Web de Clustering para Análisis de Datos el cual permite ingresar mediante una interfaz web y/o una API un conjunto de datos que son analizados mediante técnicas de clustering, estas técnicas permiten realizar agrupamiento de datos basados en sus características, y así arrojar un resultado que relaciona dichos datos. Lo anterior, busca proveer a la Universidad de una herramienta que permita de manera general, práctica y gratuita, realizar análisis de datos basados en clustering para cualquier estudio de investigación.INTRODUCCIÓN 1. GENERALIDADES 2. OBJETIVOS DEL PROYECTO 3. MARCO REFERENCIAL 4. MARCO CONCEPTUAL 5. METODOLOGÍA 6. DESARROLLO DEL PROYECTO 7. RESULTADOS 8. CONCLUSIONES BIBLIOGRAFÍA ANEXOSPregradoIngeniero de Sistema

Security for Diversity: Studying the Effects of Verbal and Imagery Processes on User Authentication Mechanisms

Abstract. Stimulated by a large number of different theories on human cognition, suggesting that individuals have different habitual approaches in retrieving, recalling, processing and storing verbal and graphical information, this paper investigates the effect of such processes with regard to user performance and preference toward two variations of knowledge-based authentication mechanisms. In particular, a text-based password authentication mechanism and a recognition-based graphical authentication mechanism were deployed in the frame of an ecological valid user study, to investigate the effect of specific cognitive factors of users toward efficiency, effectiveness and preference of authentication tasks. A total of 145 users participated during a five-month period between February and June 2012. This recent study provides interesting insights for the design and deployment of adaptive authentication mechanisms based on cognitive factors of users. The results and implications of this paper are valuable in understanding and modeling user interactions with regard to authentication mechanisms