Abstract
Prevalent in today society mobile devices indeed come with technical capabilities offering both complex software applications and location-based services. However, seldom are the mobile-devices software and hardware potential fully exploited, seen that the navigation-aid systems are the most ordinary and significant advantages being taken from such capabilities. Furthermore, bringing environment-contextualized information and services to users through their mobile-devices seems yet to be roughly explored as an electronic business. For example, when someone is on tour and spontaneously wants to find information, or want to book/buy tickets, concerning cultural events taking place in their geographical surroundings, up to present, it is not known an available system or service capable of providing it. To overcome this problem, we propose a new ubiquitous events promotion e-business system, which enables one to search for cultural events based on geographic location, also supporting ticket-booking, ticket-selling and ticket-validation services.

Abstract
Recent digital games have been developed not only for entertainment purposes, but also to promote learning. This paper presents MOW (Matching Objects and Words), which is an Augmented Reality (AR) game for learning words in different languages. Experimental tests were performed with Portuguese children during English classes. We have compared the results from using MOW along with traditional teaching methods. The results indicate that children who used the Augmented Reality games had a superior learning progress than those who used only traditional methods.

Abstract
Portugal started its "formal" path to the Information Society in 1997 with the creation of the "Green Paper on the Information Society". In 2000, the "Operational Programme for the Information Society" was created and based on three main pillars. Having been created as part of the second pillar, "Portugal Digital", the "Digital Cities and Regions" initiative, aimed at developing the Information Society on a regional basis. In this article an overview is made on the purposes and results of the projects incorporated in the "Digital Cities and Regions" initiative. The goals of several projects were analysed. From this analysis a summary chart and a brief discussion of the Goals of the Digital Projects were made.

Abstract
In the last decade, an increasing number of techniques have been developed to reproduce high dynamic range imagery on traditional displays. These techniques, known as Tone Mapping Operators (TMOs), have been compared and ranked in different ways according to several image characteristics. However, none of these algorithms has been developed specifically for small screen devices (SSD). In this paper, we present an evaluation of currently used TMOs to show that SSDs with limited size, resolution and colour depth require specific research to find or create an appropriate solution. The research described in this paper is based on psychophysical experiments; using three different types of displays (CRT, LCD and SSD). The obtained results show that rankings obtained are similar for the LCD and CRT but are significantly different for the SSD. Furthermore, these rankings show additionally that some characteristics of TMOs need to be emphasized to obtain better high-fidelity mapped images for SSDs.

Abstract
Technology has profoundly changed the way we learn and live. Indeed, such relationship appears to be quite complex, within IT contexts, and especially in socially and technologically rich learning environments, where related skills and learning are progressively required and fostered. Thus, if a satisfactory level of intellectual performance and social competence of a primary school pupil is indeed highly dependent on the type of participation that parents offer their children, IT, in general, and Internet, in particular, may well provide a new paradigm, setting forth that education and communication approach is truly more complex than ever before. It is on the basis of such paradigm that we therefore present a case study where a set of multimedia exercises were used in order to possibly improve the mathematical skills of pupils, one with mental retardation and another with cerebral palsy. Being part of a Web-based system to support students' learning, the referred set of multimedia exercises proved to be the children's favorite, rather than exercises in paper form, which also led the children to show a fair more positive attitude towards learning. Also, we observed that through the mentioned multimedia exercises, the children became far more autonomous, interested, persistent, happy, and able to easily absorb the material as well as more willingly to continue on working.

Abstract
As the internet becomes the most significant source for seeking information and acquiring services, the problems raised by the lack of usability and accessibility on websites lead to problems of e-exclusion, which phenomena may potentially have a great impact on one's life. Although some groups of individuals with special needs, namely the visual disabled people, have received the help of researchers to overcome the problem of accessing the information, there are other groups, particularly intellectually disabled people, that received little attention, indicating that their ability to access information is still limited. In this paper we present a study that investigates how people with the mentioned intellectual disabilities interact with web pages, which difficulties do they have while accessing the information and we propose guidelines for the studied group. While conducting this study we have also analyzed how the guidelines (1.0 and 2.0) suggested by W3C are applied to this particular group.