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Social network services (SNSs) have brought new possibilities and challenges to the design of software environments that respect people’s cultural differences. These systems may represent an opportunity for social and digital inclusion. However, search mechanisms in these systems impose serious barriers for people in the process of acquiring digital(More)
Taking part in a social software is a growing reality worldwide, while the interaction design of social software is still a challenging task due to the lack of third HCI paradigm artifacts, methods, tools and even theories for supporting designers. In this paper we present an artifact for the requirements clarification activity, and suggest some activities(More)
OBJECTIVES We aim to report the efficacy and safety of rituximab (RTX) in patients diagnosed with juvenile systemic lupus erythematosus (JSLE) or juvenile idiopathic arthritis (JIA) refractory to conventional treatment. METHODS A retrospective review was made of all medical records of patients with JSLE or JIA treated with RTX between January 2009 and(More)
The continuous evolution of life science ontologies requires the adaptation of their associated mappings. We propose two approaches for tackling this problem in a largely automatic way: (1) a composition-based adaptation relying on the principle of mapping composition and (2) a diff-based adaptation algorithm individually handling change operations to(More)
The contents of this report are the sole responsibility of the authors. O conteúdo do presente relatório é de única responsabilidade dos autores. Abstract Social Network Services are a reality nowadays. These systems represent a propitious virtual environment for user interaction and communication, and an opportunity for people to share information and(More)
Nowadays, Web systems generate an enormous amount of data that need to be organized, managed and retrieved in a more efficient and accurate way. Literature has brought these concerns, trying to develop techniques to allow the use of content by machines through Semantic Web technologies, such as Web ontologies. However these are still insufficient to(More)
Sentiment analysis has become a key tool for several social media applications, including analysis of user's opinions about products and services, support to politics during campaigns and even for market trending. There are multiple existing sentiment analysis methods that explore different techniques, usually relying on lexical resources or learning(More)
The highly dynamic nature of domain ontologies has a direct impact on semantic mappings established between concepts from different ontologies. Mappings must therefore be maintained according to ongoing ontology changes. Since many software applications exploit mappings for managing information and knowledge, it is important to define appropriate adaptation(More)
When was the last time you read a newspaper and was bombarded with articles you would rather not see? Current news media shows massive number of news every day. But from tragedies to happy stories, people might want to choose to read only those articles that fit their current mood. The purpose of this project is to present the Magnet News, a Web tool in(More)
Mappings established between Knowledge Organization Systems (KOS) increase semantic interoperability between biomedical information systems. However, biomedical knowledge is highly dynamic and changes affecting KOS entities can potentially invalidate part or the totality of existing mappings. Understanding how mappings evolve and what the impacts of KOS(More)