We formalize the notion of Verifiable Oblivious Storage (VOS), where a client outsourcesthe storage of data to a server while ensuring data confidentiality, access pattern privacy, andintegrity and freshness of data accesses. VOS generalizes the notion of Oblivious RAM (ORAM)in that it allows the server to perform computation, and also explicitly considers data integrityand ...

The freshness and quality indices of whiting (Merlangius merlangus) influenced by a large number of chemical volatile compounds, are here analyzed in order to select the most relevant compounds as predictors for these indices. The selection process was performed by means of recent statistical variable selection methods, namely robust model-free feature screening, based on quantile correlation a...

Atlantic herring (Clupea harengus) is an important commercial fish and shows to be more and more demanded for human consumption. Therefore, it is very important to find good methods for monitoring the freshness of the fish in order to keep it in the best quality for human consumption. In this study, the fish was stored in ice up to 2 weeks. Quality changes during storage were assessed by the Qu...

The development of users’ profiles is central for adaptive system to propose information that corresponds to user specific needs. Online social networks provide valuable information sources to collect and identify user’s information and user’s interests. This work focuses on extracting user’s interests from his social egocentric network to build the social dimension of his user profile. To impr...

Existing search engines contain the picture of the Web from the past and their ranking algorithms are based on data crawled some time ago. However, a user requires not only relevant but also fresh information. We have developed a method for adjusting the ranking of search engine results from the point of view of page freshness and relevance. It uses an algorithm that postprocesses search engine...

Wireless sensor networks (WSNs) are often deployed in potentially adverse or even hostile environment so that there are concerns on security issues in these WSNs. Sensor nodes with resource-constrained make security applications a challenging problem. Key agreement is a fundamental security service in WSNs, which enables sensor nodes to communicate securely with each other using cryptographic t...