Abstract
The use of traditional input devices such as keyboards and mice can become a huge obstacle for older adults in interacting with computer systems. Using Natural User Interfaces (NUI's), more specifically using gestures or movements on a multi-touch device, can be a good alternative to overcome these dificulties. This paper analyses the state of the art and identifies a set of criteria relevant to classify the projects in this area. The resulting classification enables us to recognize research opportunities on Natural User Interfaces, and namely multi-touch interfaces for elderly.

Abstract
The autonomy of blind people in their daily life depends on their knowledge of the surrounding world, and they are aided, by keen senses and assistive devices that help them to deduce their surroundings. Existing solutions require that users carry a wide range of devices and, mostly, do not include mechanisms to ensure the autonomy of users in the event of system failure. This paper presents the nav4b system that combines guidance and navigation with object's recognition, extending traditional aids (white cane and smartphone). A working prototype was installed on the UTAD campus to perform experiments with blind users.

Abstract
The need for contact, sharing and socializing is part of human nature, so that the community's role is vital to the survival of the species. With the development of Information and Communication Technologies and their influence on society and everyday life, led the search for new ways to build relationships and create communities among people, creating virtual communities; turn social networks emerge as new forms of association that respond to more complex understanding of human interaction in a way that the wider community; these to promote your main goal, more integrated into the games as a tool of socialization. The impact of current games at various levels, as the social and economic development, and its applicability in various fields, it becomes important to analyze the contribution of the community. It is intended in this article, a description of the factors that motivate this research to a later stage to develop the proposed objectives: to analyze the new social reality and develop a model that allows adapting the health games to social games in order to foster the creation / sustainability of communities based on social networks, aiming to raise awareness of health issues, increasing knowledge and sharing of experiences of members of communities. © 2011 IEEE.

Abstract

Abstract
We aim to analyze the current problems and the main difficulties encountered by information systems and information technologies managers, featuring different actors and how they relate. This work introduces a design pattern, a fact table, for management and decision support, named CRUDI Table. The CRUDI Table is an abstraction idealized from the CRUD Matrix concept extended by an extra dimension: the importance dimension.

Abstract
On this paper we proceed to the analysis of the means of obtaining customer feedback through the Internet. Keeping demanding customers as well as attract new ones, has always been a major concern for the majority of the companies. Knowing what customers think is an important part of developing products and services, and differentiating factor against the competition. Obtaining customer feedback through the Internet can be considered more cost efficient and accessible, when compared to more traditional means. This work results from a study that identified the means of obtaining customer feedback, on the websites of the Portuguese companies with the biggest business volume.