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Past research comparing augmented reality (AR) media such as in-situ projection and head-mounted devices (HMD) has usually considered simple manual activities. It is unknown whether previously reported differences between different AR media also apply to ...

Virtual Reality (VR) technology enables “embodied interactions” in realistic environments where users can freely move and interact, with deep physical and emotional states. However, a comprehensive understanding of the embodied user experience is ...

taskSketch is an eclipse-based task model editor to enable designers to sketch a task model and to recognize it by a multi-stroke gesture recognition of pre-defined shapes and relations. The tool supports three levels of definition (LoF, LoD, LoC) and ...

Detailed usage data is becoming available through different devices (e.g., personal computer, cell phones, tablets, watches, glasses, wrist bands), in huge volumes, and in a speed that requires new models and visualizations to support the understanding ...

Ensuring that an interactive application allows users to perform their activities and reach their goals is critical to the overall usability of the interactive application. Indeed, the effectiveness factor of usability directly refers to this capability. ...

Besides advances in usability the use of interactive systems still poses challenges for end users, particularly beginners. Users have to adapt in some way to the GUI. They have to learn the sequence of steps and how to accomplish them to perform a task. ...

Specifying and implementing flexible human-computer dialogs, such as those used in kiosks, is complex because of the numerous and varied directions in which each user might steer a dialog. The objective of this research is to improve dialog ...

This paper proposes a task-oriented grasp quality metric based on distribution of task disturbance, which could be used to search for a grasp that covers the most significant part of the disturbance distribution. Rather than using a uniformly ...

In order to better understand and describe tasks and improve the ability of Cloud, the analyzing of tasks is essential. A coarse-grained analysis, cluster analysis, and intra-cluster analysis are used to model tasks for the analysis of a one-month trace ...

Crowdsourcing techniques applied to natural language processing have recently experienced a steady growth and represent a cheap and fast, albeit valid, solution to create benchmarks and training data. Nevertheless, some particularly complex tasks such ...

In the domain of Web applications, several model-based approaches have been introduced, supporting user-centered requirements engineering and thereon the identification of presentation elements and interaction techniques. Semantic application modeling ...

Personalized search systems tailor search results to the current user intent using historic search interactions. This relies on being able to find pertinent information in that user's search history, which can be challenging for unseen queries and for ...

Usability of interactive web forms is a critical aspect of the overall user experience. In this paper, a tool to automatically evaluate web form filling tasks is presented. The tool carries out Keystroke Level Model symbolic calculations of the time ...

While a significant effort is being undertaken by the Human-Computer Interaction community in order to extend current knowledge about how users interact with computing devices and how to design and evaluate new interaction techniques, very little has ...

There is much opportunity for innovation in the areas of design, development, and delivery of technical communication for "systems of systems." Systems can be extremely complex, and contain many subsystems and components. The presentation of technical ...

This paper discusses approaches for specifying workflows based on task models. These task models represent activities of stakeholders in different ways. It is shown how the development process of workflow specifications can be supported to get ...

In this paper, we propose a method for the analysis and the interpretation of the interactions between the user and the interactive system to evaluate. The proposed approach is based on the comparison between the user interaction sequences and the ...

Model-based design of user interfaces mostly starts with task and domain modeling. The resulting models are an important input to subsequent development steps. Thus, a thorough evaluation of these specifications is of great importance, e.g. to avoid the ...

Presentation-oriented mashup applications are usually developed by manual selection and assembly of pre-existent components. The latter are either described on a very technical, functional level, or using informal descriptors, such as tags, which bear ...

This paper introduces methods for developing task-based applications by tightly integrating workflows with application logic written in an imperative programming language and automatically completing workflows especially with tasks that mediate ...