The interconnected cloud computing paradigm is gaining considerable attention as a fundamental emerging model of cloud computing. It allows a wide range of interactions and collaborations across multiple service providers. Despite the potential advantages of interconnected clouds, establishing trust among participating parties is a challenging issue. In this paper, we introduce a lightweight trust management algorithm based on subjective logic (InterTrust) to promote trust in interconnected clouds. The experimental results demonstrate that InterTrust is capable of producing accurate trust information with significantly low execution time and high scalability compared to application of both the well-established trust management algorithm Trust Network Analysis with Subjective Logic (TNA-SL) and no trust algorithm.
E-Government services offer citizens an easy way to accomplish their work anytime and anywhere. Ensuring the accessibility and usability of such services is crucial to citizens to allow smooth online transaction. In this paper we present an empirical study to investigate the accessibility and usability of a representative sample of top Saudi e-government services. The accessibility will be based on the compliance to WCAG 2.0 recommendations, and the usability will be based on expert reviews. Our evaluation results show that the examined e-Government services have one or more accessibility violations. On the other hand, in terms of usability, most services were usable and well designed, thus little work is recommended to make them more user-friendly and attractive to citizen.
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