A framework for concern-sensitive, client-side adaptation

Currently the Web is a platform for performing complex tasks which involve dealing with different Web applications. However, users still have to face these tasks in a handcrafted way. While building "opportunistic" service-based software, such as mashups, can be a solution for combining data and information from different providers, many times this approach might have limitations. In this paper we present a novel approach which combines concern-sensitive application adaptation with user-collected data to improve the user experience while performing a task. We have developed some simple though powerful tools for applying this approach to some typical tasks such as trip planning. We illustrate the paper with simple though realistic examples and compare our work with others in the same field.Publicado en Lecture Notes in Computer Science book series (LNCS, vol. 7059).Facultad de InformáticaLaboratorio de Investigación y Formación en Informática Avanzad

Combining behavioural types with security analysis

Today's software systems are highly distributed and interconnected, and they increasingly rely on communication to achieve their goals; due to their societal importance, security and trustworthiness are crucial aspects for the correctness of these systems. Behavioural types, which extend data types by describing also the structured behaviour of programs, are a widely studied approach to the enforcement of correctness properties in communicating systems. This paper offers a unified overview of proposals based on behavioural types which are aimed at the analysis of security properties

A flexible architecture for client-side adaptation

Currently the Web allows users to perform complex tasks which involve different Web applications. Anyway they still have to face these tasks in a handcrafted way. Although it is possible to build service-based software, such as mashups, to combine data and information from different providers, many times this approach has limitations. In this paper we present an approach for Client-Side Adaptation aimed to support complex concern-sensitive and task-based adaptations with user-collected data. Our approach improves user experience by supporting user tasks among several Web applications.Publicado en Lecture Notes in Computer Science book series (LNCS, vol. 7059).Laboratorio de Investigación y Formación en Informática AvanzadaFacultad de Informátic

Context-aware Authorization in Highly Dynamic Environments

Highly dynamic computing environments, like ubiquitous and pervasive computing environments, require frequent adaptation of applications. Context is a key to adapt suiting user needs. On the other hand, standard access control trusts users once they have authenticated, despite the fact that they may reach unauthorized contexts. We analyse how taking into account dynamic information like context in the authorization subsystem can improve security, and how this new access control applies to interaction patterns, like messaging or eventing. We experiment and validate our approach using context as an authorization factor for eventing in Web service for device (like UPnP or DPWS), in smart home security

A critical rationalist approach to organizational learning: testing the theories held by managers

The common wisdom is that Popper's critical rationalism, a method aimed at knowledge validation through falsification of theories, is inadequate for managers in organizations. This study falsifies this argument in three phases: first, it specifies the obstructers that prevent the method from being employed; second, the critical rationalist method is adapted for strategic management purposes; last, the method and the hypotheses are tested via action research. Conclusions are that once the obstructers are omitted the method is applicable and effective

Engineering Concern-Sensitive Navigation Structures: Concepts, Tools and Examples

Improving navigability in Web applications is a serious challenge for developers as this quality feature is essential for applications success. In this paper we present the concept of concern-sensitive navigation, a useful conceptual tool to improve navigation by profiting from the nature of application’s concerns. Concern sensitive navigation allows enriching Web pages with information, services or links related with the context in which pages are accessed.We show how our ideas are applied during the development process (e.g. by applying wise design strategies for separation of concerns) and can also be used by final users while adapting an application (e.g. by modding). Some examples of Web 2.0 sites are used to illustrate this last possibility. We also compare our research with other similar approaches such as the construction of adaptive Web applications.Facultad de InformáticaLaboratorio de Investigación y Formación en Informática Avanzada (LIFIA