Separated modeling of User Interface (UI) widgets is a very natural way to tackle the complexity of UI models. Due to interactions between widgets, however, this is not always an easy task. We propose an aspect-oriented approach to widget-oriented UI modeling: each widget’s behavior is modeled separately in a UML state machine; synchronization of the state machines is modeled in aspects and is ...

The impact of user interface quality has grown in software system engineering. This importance will grow further with upcoming new paradigms such as Ambient Intelligence or Ubiquitous Computing. These paradigms confront the production industry with a new diversity of usage situations. In previous work, we have shown the adaptation of a task-oriented, model-based Useware engineering process to f...

Adapting user interfaces to cultural preferences has been shown to improve a user’s performance, but is oftentimes foregone because of its timeconsuming and costly procedure. Moreover, it is usually limited to producing one uniform user interface (UI) for each nation disregarding the intangible nature of cultural backgrounds. To overcome these problems, we exemplify a new approach with our cult...

Mobile application is an emerging area of interest, growing exponentially each year. Among the many mobile applications, only a few remain competitive. The success of a mobile application depends on its context of use and user experience (UX). In a pilot study, we tried to find and review user interface (UI) and UX problems by analysing user sentiments towards apps based on their text reviews. ...

Recent home theater system requires for users to control various devices such as TV, audio equipment, DVD and video players, and set-top box simultaneously. To obtain the services that a user wants in this situation, user should know the functions and positions of the buttons in several remote controllers. Since it is usually difficult to manipulate them and the number of the devices that we ca...

The usability of user interfaces is crucial for the success of an application. Model driven user interface (UI) development speeds up the production of UIs and improves the maintainability of UIs. However, the usability evaluation of UIs is usually conducted by end-users or experts after UIs are generated. Such a user centric evaluation is usually time consuming and expensive, especially when t...

Adapting user interfaces (UIs) to various contexts, such as for the exploding number of different devices, has become a major challenge for UI developers. The support offered by current development environments for UI adaptation is limited, as is the support for the efficient creation of UIs in Web service-based applications. In this paper, we describe an approach where – based on a given conte...

Most software applications are difficult to use because the development process emphasizes the quality of the architecture and not the usability of the application. Programs can be both well engineered and usable if software engineers work with human interface engineers who not only design the user interface but advocate architectural decisions that help make tasks more natural for users. Our g...

iTask3 [12] is the most recent incarnation of the iTask framework for the construction of distributed systems where users work together on the internet. It offers a domain specific language for defining applications, embedded into the lazy functional language Clean. From the mere declarative specification a complete multi-user web application is generated. Although the generated nature of the u...