Klaus Meißner

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Even though numerous Web3D technologies exist, most of them do not support a high-level, multi-disciplinary authoring process. Moreover, concepts of reuse are rarely provided. A component-based approach is introduced with the CONTIGRA architecture to construct interactive, three-dimensional applications, either stand-alone or web-based. The approach is(More)
Engineering adaptable Web Information Systems (WIS) requires systematic design models and specification frameworks. A complete model-driven methodology like Hera distinguishes between the conceptual, navigational, and presentational aspects of WIS design and identifies different adaptation “hot-spots” in each design step. This paper concentrates on(More)
Context-awareness is a key issue for future applications within heterogeneous and networked environments. In terms of efficiency and reusability, such applications should be separated from the problems of context gathering and modeling, but should instead profit from and contribute to cross-application context information. For this purpose, an(More)
• Dynamic adaptation of the UI mashup » Adaptive layout, UIC reconfiguration and exchange • User Interface Services (UIS) provide UI components and resources, like images, styles, libraries • User Interface Components (UIC) are client-side, reusable and configurable web UI parts with a generic JavaScript interface • Classification and description by UISDL •(More)
Adaptivity in web applications raises several concerns. One demands it to be decoupled from the actual application and at the same time wants to use very domain-specific terms for dividing the audience into groups. Two current trends, aspect-oriented programming and semantic web technologies, fit these requirements like a glove. In this paper, we present(More)
Although many valuable visualizations have been developed to gain insights from large data sets, selecting an appropriate visualization for a specific data set and goal remains challenging for non-experts. In this paper, we propose a novel approach for knowledge-assisted, context-aware visualization recommendation. Both semantic web data and visualization(More)
Recently, <i>mashups</i>, i.e., composite web applications, have gained momentum in both the consumer and enterprise sector. However, they lack a structured development process which abstracts from specific platforms and enables a <i>universal composition</i> including the presentation layer. Moreover, support for context-awareness in such applications has(More)
So far, little research has addressed reuse and context awareness with respect to rich web-based user interfaces. Uniform models for encapsulation and reuse have been developed for the applications&#x02019; back ends in the form of Web Services, but this paradigm has not yet been applied to the presentation layer. Thus, UIs are usually hand-crafted and lack(More)