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In this paper we describe a multichannel, mobile, and location-based application called GeoPix developed as a proof-of-concept for several use cases related to eTourism. In GeoPix, mobile users produce geo-referenced pictures and share them with Web users that can access the online database with a smart navigation experience based on maps. Web users can browse, pan, zoom areas immediately seeing the pictures posted by the on-the-road users. Thumbnails are directly overlaid on the maps exactly where the full-size photos are taken. They can also make searches, apply filters, and save geographic bookmarks of the photos displayed on the maps. In this way a large database of images can be easily browsed in a way that we call geo-browsing.

Abstract. The Java2 Micro Edition platform can really be considered an emerging standard for new generation embedded software. This article introduces a practical methodology aimed to automatically generate a software prototype starting from an abstract description which defines the dialogue between the user and the application by means of a device independent and abstract description. We will show how an agenda application for cellular phones can be described by means of a visual language called PLANES and present how the personal agenda prototype is implemented by an appropriate generation tool.

Abstract:Consumer mobile devices, such as cellular phones and PDAs, rely on TCP/IP as main communication protocol. However, cellular networks are not reliable as wired and wireless LAN, due to both users mobility and geographical obstacles. Moreover, limited bandwidth outside urban areas requires an application level data priority management, in order to improve user experience and avoid communication stack deadlocks. This paper presents early specification and first prototype of the LCPP (Lightweight Client-Pull Protocol), a UDP-based communication protocol specially designed to provide better performance, fast responsiveness and save processing power on mobile devices. Using some concepts adopted in the field of P2P file sharing, LCPP provides data priority management approach, which enables application to negotiate concurrent access to communication channel and to be notified about delaying, network congestion or remote device inability to process data.