We notice an increasing usage of web applications in interactive spaces, a variant of ubiquitous computing environments. Interactive spaces feature a large and dynamically changing number of devices, e.g. an interactive TV set in the living room that is used with different input devices or an iPhone that is dynamically federated to devices in the environment. Web applications need a better way ...

Computing technologies have advanced rapidly over the past decade. Faster machines, better graphics, and more advanced algorithms become available every year. Moreover, the evolution of internet technology and the increasing accessibility of computing resources and mobile devices allow computing technologies to go beyond business and scientific computing, and become an important means for provi...

Interfaces to information retrieval (IR) systems increasingly support progressive interactive search formulation and refinement. Part of their aim is to make information retrieval easier for the end user without the need for (or with minimal support from) an information intermediary. One approach to supporting these activities has been to design ‘intelligent’ interfaces that embody some of the ...

This proposal introduces and defines the notion of multi-fidelity computation, and makes the case that it is a viable approach to meeting the needs of interactive applications on mobile computers. These applications are constrained by the need for good interactive response, and efficient use of scarce resources such as user attention, battery power and wireless network. To substantiate this cla...

Radiation therapy, an increasingly available and effective cancer treatment solution, involves sophisticated machinery as well as careful planning. Interactive 3D simulations combined with accurate 3D patient specific data can improve the planning process saving time and resources in generating the optimal treatment plan. We illustrate the potential of X3D in radiation therapy, specifically rad...

The implementation of an interactive Video on Demand service is conventionally expensive because each viewer must be allocated a video stream. On the other hand, video streams can be multicast to a number viewers, reducing the system resources. This paper proposes a scheme, called Random Access PMC (RAPMC) which reduces the requirements for supporting an interactive VOD service. It is shown tha...

Interactive mathematics over the Internet is particularly appealing in that it can take advantage of the wealth of resources available online. Among the prerequisites to cooperation among systems for computer mathematics is the meaningfulness of the objects that are exchanged. Strong OpenMath is a sublanguage of OpenMath for which meaningfullness of the objects is exactly de ned. The paper addr...

An original technology and techniques to digitize large-size maps is presented in the paper. Difficulties in automatic solution of this task made us to produce a wmbinedautomatic-interactive technology which includes together with automatic vectori7ation of map layers and automatic object recognition also interactive object digitizing and manual object digitizing based on image context. Such co...

Given the prevalence of digital resource use in education, it is critical to understand teachers’ interactions and perceptions when retrieving digital video for instructional purposes. The overarching objective of the present study was to examine how user-centric measures varied between different groups of science teachers, formed on certain user characteristics. An experimental methodology, in...

The grid-enabled Volumetric Image Visualization Environment (VIVE) is an interactive analysis tool for 3D medical images, facilitating diagnosis, surgical planning, therapy evaluation, and remote 3D examination. It improves understanding of complex anatomies by providing an interactive three-dimensional environment with simple Web-based user interface. The lightweight Java/VRML client enables u...