The technologies, architectures, and methodologies traditionally used to develop distributed applications exhibit a variety of limitations and drawbacks when applied to large scale distributed settings (e.g., the Internet). In particular, they fail in providing the desired degree of configurability, scalability, and customizability. To address these issues, researchers are investigating a variety of innovative approaches. The most promising and intriguing ones are those based on the ability of moving code across the nodes of a network, exploiting the notion of mobile code. As an emerging research field, code mobility is generating a growing body of scientific literature and industrial developments. Nevertheless, the field is still characterized by the lack of a sound and comprehensive body of concepts and terms. As a consequence, it is rather difficult to understand, assess, and compare the existing approaches. In turn, this limits our ability to fully exploit them in practice, and to further promote the research work on mobile code. Indeed, a significant symptom of this situation is the lack of a commonly accepted and sound definition of the term "mobile code" itself. This paper presents a conceptual framework for understanding code mobility. The framework is centered around a classification that introduces three dimensions: technologies, design paradigms, and applications. The contribution of the paper is twofold. First, it provides a set of terms and concepts to understand and compare the approaches based on the notion of mobile code. Second, it introduces criteria and guidelines that support the developer in the identification of the classes of applications that can leverage off of mobile code, in the design of these applications, and, finally, in the selection of the most appropriate implementation technologies. The presentation of the classification is intertwined with a review of the state of the art in the field. Finally, the use of the classification is exemplified in a case study.

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This paper describes the RACAI Text-to-Speech (TTS) entry for the Blizzard Challenge 2013. The development of the RACAI TTS started during the Metanet4U project and the system is currently part of the METASHARE platform. This paper describes the work carried out for preparing the RACAI entry during

-selection text-to-speech synthesis systems consisting of a core algorithmic base, as well as some algorithmic variants introduced not just to address the language-specific component of the synthesis engines (i.e., text-processing front-end) but also to better serve the different properties of different language

In this paper, we present two concatenative text-to-speech systems built from the “Blizzard Challenge ” speech databases. The two systems differ primarily in their segment selection cost function. One system has our baseline cost function, and the other has a cost function which has been altered

This paper describes I2R’s submission to the Blizzard Challenge 2013 speech synthesis evaluation. There are two sections this year: an English audio book section, and an Indic language speech synthesis section. Unit-selection was used for the English task; while HMM-based TTS was used

synthesis, unit selection, cost function, and Mandarin text-to-speech.

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