We use closed pattern mining to discover user preferences in appointments in order to build structured solutions for a calendar assistant. Our choice of closed patterns as a user preference representation is based on both theoretical and practical considerations supported by Formal Concept Analysis. We simulated interaction with a calendar application using 16 months of real data from a user’s ...

Dialog applications for managing calendars have been developed for every generation of dialog systems research (Heidorn, 1978; Yankelovich, 1994; Constantinides and others, 1998; Horvitz and Paek, 2000; Vo and Wood, 1996; Huang and others, 2001). Today, Web-based calendar applications are widely used. A spoken dialog interface to a Web-based calendar application permits convenient use of the sy...

This paper challenges the generic single conceptual viewpoint that designers have of groupware and specifically Groupware Calendar Systems (GCS). From the analysis of interviews, we categorized different calendar usage and activity that distinguish between the ‘Private Calendar’, the ‘Public Calendar’ and the ‘Shared Calendars’. Based on this categorization, we identified the dynamic relationsh...

One of the effective methods to improve the thermal efficiency of solar collectors is using nanofluids as the coolant. The present study experimentally investigated the effect of SiO2/water nanofluid with 1% mass fraction on the performance of a symmetric collector, i.e. conical solar collector. The conical solar collector with 1 m2 area and normal to the earth was tested in Ahvaz, a city in th...

In this paper, a thin-film InP-based solar cell designed and simulated. The proposed InP solar cell has a periodic array of plasmonic back-reflector, which consists of a silver layer and two silver nanowires. The indium tin oxide (ITO) layer also utilized as an anti-reflection coating (ARC) layer on top. The design creates a light-trapping structure by using a plasmonic back-reflector and an an...