Assume that the processes communicate through shared variables; contentions for access (read or write) to a shared variable by different processes are resolved arbitrarily but fairly (i.e., any process attempting to read/write a shared variable will do so eventually). Nothing may be assumed about the initial values of the shared variables. In the absence of this requirement, the following simpl...

Assume that the processes communicate through shared variables; contentions for access (read or write) to a shared variable by different processes are resolved arbitrarily but fairly (i.e., any process attempting to read/write a shared variable will do so eventually). Nothing may be assumed about the initial values of the shared variables. In the absence of this requirement, the following simpl...

Private and public clouds are getting more and more common. With them comes the need to analyze data stored by different applications in different clouds. Different clouds and applications tend to enforce the use of different data stores, which makes it even harder to aggregate information. The main outcome is that integrating different data sources requires deep knowledge on how data is stored...

Consider trade conducted via a platform, such as an online app store or a farmers market. The quality sellers choose for their products affects the surplus trade generates. Because the platform’s profit depends on that surplus, the platform can have an incentive to regulate quality. This is true even if quality is observable at time of purchase or if sellers can develop reputations concerning q...

Although many college courses adopt online tools such as Q&A online discussions, there is no easy way to evaluate their impact on learning. In this paper, we investigate a predictive relation between characteristics of discussion contributions and student performance. For modeling dynamics of conversational dialogue, speech acts (Q&A dialog roles that participants play) and emotional features c...

Online music libraries available on the Web contain a large amount of audio content that is usually the result of digitization of analogue recordings or the direct acquisition of digital sources. The acquisition process is carried out by several persons and may last a number of years, thus it is likely that the same or similar audio content is present in different versions. This paper describes...

The paper explores the use of virtual worlds to support online role-play as a collaborative activity. This paper describes some of the challenges involved in building online role-play environments in a virtual world and presents some of the ideas being explored by the project in the role-play applications being developed. Finally we explore how this can be used within the context of immersive e...