Cooperative hybrid ARQ (HARQ) protocols have been widely studied in recent years and they were shown to provide higher efficiency than cooperative protocols. This paper proposes a joint design within which the HARQ protocol collaborates with the link adaptation functionality and the cooperative transmission scheme in order to adapt the behavior of the HARQ protocol to the QoS requirements of th...

Cooperative applications require advanced transactional services that make the sharing and exchange of information as natural as possible while preserving a notion of consistency. Conventional transaction models that were based on the ACID properties do not meet the typical requirements of cooperative applications. The CoAct model [RKT95, WK96] is designed for supporting cooperative work in int...

In the next generation Internet, the network will evolve from a plain communication medium into one that provides endless services to the users. These services will be composed of multiple cooperative distributed application elements. We name these services overlay applications. The cooperative application elements within an overlay application will build a dynamic communication mesh, namely an...

A framework is proposed that creates, uses, communicates, and distributes information whose organizational dynamics allow it to perform a distributed cooperative enterprise in public environments even over open source systems. The approach assumes Web services as the enacting paradigm, possibly over a grid, to formalize interaction as cooperative services on various computational nodes of a net...

The Italian approach to e-Government is based on the development and deployment of the Unitary Network, a “secure Intranet” interconnecting all the public administrations. The Cooperative Architecture, currently designed on top of it, is the reference distributed computing model in which each administration is represented as a Domain, exchanging data and application services with the others thr...

In cooperative processes and in e-services, an evaluation of the quality of exchanged data is essential for building mutual trust among cooperating organizations and correctly performing cooperative activities. Several quality dimensions, related to the intrinsic nature of data and to the context of the cooperative process where data are used, must be taken into consideration. In addition, in o...

The Italian approach to e-Government is based on the development and deployment of the Unitary Network, a “secure Intranet” interconnecting all the public administrations. The Cooperative Architecture, currently designed on top of it, is the reference distributed computing model in which each administration is represented as a Domain, exchanging data and application services with the others thr...

Location dependent services are expected to become a very important revenue stream in the future. To enhance performance of location dependent queries there have been several research efforts in the past. Most of these have been focused on client side caching with extremely little work on cooperative caching. Cooperative caching might particularly be a very good solution to improve performance ...

In this paper we will motivate the cellular controlled short-range communication for cooperative services in 4G wireless networks. Without going into the technical details, we advocate by means of very illustrative scenarios, that cooperation of users and their terminals better services can be achieved at lower prices. This new step in technology comes in combination with a social aspects of co...

In this work we focus on the problem of co-location as a first step of conducting Cross-VM attacks such as Prime and Probe or Flush+Reload in commercial clouds. We demonstrate and compare three co-location detection methods namely, cooperative Last-Level Cache (LLC) covert channel, software profiling on the LLC and memory bus locking. We conduct our experiments on three commercial clouds, Amazo...