Abstract
Nowadays it is possible to disseminate information to the all world in real time using current communication tools supported mostly by the Internet. The work of several organizations reporting a multitude of problems that our society faces can be sustained by participatory platforms, which stimulate the collaboration of participants all over the world. In this paper we present a technological platform that provides a shared environment for collaborative social activism. We adapted the platform to a particular organization, Machsom Watch that reports human rights abuses in Israelis checkpoints. Finally we present some preliminary results obtained by ethnographic research using the developed platform.

Abstract
Besides services traditionally available in wireless networks, new ones may be offered that transparently adjust and adapt to the user context. The user would have more choice and flexibility if not only could he use platform and third-party services, but also compose his own services in an ad-hoc way, making it available to other users, involving them collaboratively in the construction of a wide set of services. Moreover, collaboration among users can be fostered by the availability of awareness services in mobile environments that enable them to execute joint tasks and activities. This paper presents iCas, an architecture to create context-aware services on the fly, and discusses its main modules. Also a collaborative application scenario is briefly described.

Abstract

Abstract
Rich Internet Applications (RIA) technology leads to new opportunities in Web development, adding a new level of usability and overcoming several limitations of traditional Web applications. However, there are still a few gaps in RIA development, namely the lack of methodologies enabling direct evolution of traditionally developed Web applications into this new concept. This paper describes a methodology to adapt User Interfaces (UI) from Web 1.0 into Web 2.0 introducing RIA capabilities, maintaining the business logic and data access layers legacy. The main system architecture is maintained and the new concept is achieved by adding a new Web services encapsulation layer responsible to intermediate the business logic layer and the new UI layer, providing a seamless and dynamic integration. For validating this methodology, a prototype was developed by applying and evaluating the suggested methodology. The results obtained validate that this methodology is appropriate for the given problem. © 2009 IADIS.

Abstract
The preservation of musical works produced in the past requires their digitalization and transformation into a machine-readable format. The processing of handwritten musical scores by computers remains far from ideal. One of the fundamental stages to carry out this task is the staff line detection. We investigate a general-purpose, knowledge-free method for the automatic detection of music staff lines based on a stable path approach. Lines affected by curvature, discontinuities, and inclination are robustly detected. Experimental results show that the proposed technique consistently outperforms well-established algorithms.

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.