People use an increasing number of consumer electronic devices to access their mobile apps. To enhance the applications' immersive user experience, these devices often expose APIs for accessing a wide array of sensors and domainspecific capabilities. Existing mobile application environments, however, only provide limited support for cross-device access of such APIs. To address this limitation, the Webinos platform was designed. Webinos is a virtualized Web-based application platform, aiming to support the collaboration of multiple devices within a single mobile application. In this paper we elaborate on the Webinos platform design. We discuss the encountered design challenges regarding portability, scalability, and privacy, and how these were mitigated.

Abstract.Requirements play an important role in software engineering, but their perceived usefulness means that they often fail to be properly maintained. Traceability is often considered a means for motivating and maintaining requirements, but this is difficult without a better understanding of the requirements themselves. Sensemaking techniques help us get this understanding, but the representations necessary to support it are difficult to create, and scale poorly when dealing with medium to large scale problems. This paper describes how, with the aid of supporting software tools, concept mapping can be used to both make sense of and improve the quality of a requirements specification. We illustrate this approach by using it to update the requirements specification for the EU webinos project, and discuss several findings arising from our results.

The market for personal computing devices is rapidly expanding from PC, to mobile, home entertainment systems, and even the automotive industry. When developing software targeting such ubiquitous devices, the balance between development costs and market coverage has turned out to be a challenging issue. With the rise of Web technology and the Internet of things, ubiquitous applications have become a reality. Nonetheless, the diversity of presentation and interaction modalities still drastically limit the number of targetable devices and the accessibility toward end users. This paper presents webinos, a multidevice application middleware platform founded on the Future Internet infrastructure. Hereto, the platform's architectural modifiability considerations are described and evaluated as a generic enabler for supporting applications, which are executed in ubiquitous computing environments.

Abstract. The rapidly growing market of mobile devices has set a need for applications being available at anytime, anywhere, and on any device. Although this evolution provides users an unprecedented freedom, developers are facing the challenges caused by mobile device fragmentation. Current application development solutions are insufficiently optimized for the high diversity of mobile platforms and hardware characteristics. In this paper, we propose a novel approach for the development of mobile applications. An adaptive application composition algorithm is introduced, capable of autonomously bypassing fragmentation related issues. This goal is achieved by introducing a quantitative evaluation strategy derived from the Logic Scoring of Preference (LSP) method.