In the context of secure point-to-point message transmission in networks with minimal connectivity, previous studies showed that feedbacks from the receiver to the sender can be used to reduce the requirements of network connectivity. We observe that the way how feedbacks were used in previous work does not guarantee perfect privacy to the transmitted message, when the adversary performs a Gues...

Discovery of multivalued dependencies from database relations is viewed as a search in a hypothesis space de ned according to the generalisation relationship among multivalued dependencies Two algorithms for the dis covery of multivalued dependencies from relations are presented The top down algorithm enumerates the hypotheses from the most general to more speci c hypotheses which are checked o...

Intentional Requirements Engineering (ERi*c – Engenharia de Requisitos Intencional) is a method that produces i* models. It is a six steps interactive process that uses the notion of “Strategic Dependency Situations” a modularization strategy applied to situations of an organization. ERi*c uses an elicitation strategy that mines goals from the description of the context vocabulary. This paper r...

Recognition-based graphical passwords are a suggested alternative authentication mechanism which have received substantial attention in research literature. The literature often presents new schemes, usability studies or propose countermeasures for specific attacks. Whilst this is beneficial, it does not allow for consistent comparison of the security of recognition-based graphical password sch...

Background In Africa, health systems are poorly accessible, inequitable, and unresponsive. People rarely have either the confidence or the opportunity to express their opinions. In Burkina Faso, there is a political will to improve governance and responsiveness to create a more relevant and equitable health system. Given their development in Africa, information and communication technolog...