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Due to the rapid development of mobile technologies, nowadays mobile devices are not expensive and almost every person can easily possess a mobile device. This fact boosts investments in mobile applications, among which are the person-to-person mobile payment applications. These applications are pretty sensitive in that they are related to monetary transactions, thus involving strict security and...
One of the major goals of Web services is to make easier their composition to form more complex services, modeled as workflows. A key role in the Web services composition is the selection of a proper service for each activity in the workflow. In general, this requires the exchange of sensitive information of users, requiring the composition, as well as of involved service providers. So far this problem...
Composite web services are usually coordinated according to a workflow, composed by several activities, each of which carried out by a service. A way to coordinate this cooperation is orchestration, which implies that the workflow underlying the composite web service is processed by a broker hosting a workflow engine (e.g., BPEL engine). According to the orchestration paradigm, the broker coordinates...
The technological advancements in Internet speeds, increased computing power and smart phones have pushed the rise of new digital methods supporting mobile person-to-person (P2P) payments. Despite the growing interest in these new methods, we believe that, to fully enable this increasing rise of digital wallets, there is the need for tools helping a person in judging the risk of a money transfer....
In this paper we describe the Virtual Computer Network Laboratory (CenLavi), which is a virtual computer and computer network laboratory that enables the move of physical, location and time bound, practical learning sessions into a cloud environment. The demand and development of ubiquitous education around the world has created a requirement for low cost systems, which enable lecturers and students...
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