This thesis is about building interactive graphical user interfaces in a compositional manner. Graphical user interface applications hold out the promise of providing users with an interactive, graphical medium by which they can carry out tasks more eeectively and conveniently. The application aids the user to solve some task. Conceptually, the user is in charge of the graphical medium, control...

UsiGesture is aimed at providing a contribution in the field of Engineering of Interactive Systems by supporting the work of engineers, programmers and designers during the elaboration of graphical user interfaces integrating pen-based gesture recognition on 2D surfaces. It proposes methodological guidance for incorporating pen-based gestures into graphical user interfaces through a structured ...

I am exploring an approach to developing services with multiple user interfaces based on a high level description of the service. The description is made using interaction acts, which are primitives for describing user-service interaction in a device independent way. Device adapted user interfaces are generated based on interaction acts in combination with device and service specific presentati...

The limitations of graphical user interfaces have slowed the spread of computer usage to the entire population. Perceptual user interfaces are one approach that can overcome many of these limitations. Adding perceptual capabilities, such as speech, sketching, and vision, is the key to making interfaces more effective. We argue that informal user interfaces, which do little or no up-front recogn...

W eb browsers have become the de facto standard user interface to a variety of applications. They can run on almost any platform—from PCs and workstations to PDAs, cell phones, and pagers—and allow end-users to access Web-enabled applications from any location. Applied to embedded systems, Web technologies offer graphical user interfaces that are user friendly, inexpensive, cross-platform, and ...

Personal computers become more and more important in people's lives. Digital information and user interfaces with high-quality graphical representations facilitate education as well as daily work and entertainment. Also for blind and visually impaired persons, the computer is important to improve their quality of live. It gives them independence and at the same time enhances their integration i...

The use of tangible interfaces in teaching has been proved more effective, user -friendly and helpful collaborative learning departments, when compared to traditional approaches. In particular, the interface “Makey Makey” is a modern tool that enhances collaboration between pupils, with positive results education, despite limited research done on this so far. succeeds motivating engaging young ...

primary and widely in use computed tomography (ct) dose descriptor is a volumetric ct dose index (ctdiv) that is usually measured by a pencil ionization chamber with active length of 100mm and polymethyl methacrylate (pmma) phantom. ctdiv depends on scan parameters such as mas, kv, collimation, tube rotation time but is independent of patient’s size and shape. for the purpose of a good estimati...