Engineering user centered interaction systems for semantic visualizations (2009)
Nazemi, K., Ullmann, T.D., Hornung, C.
For intuitive interaction with semantic visualizations, gesture-based interaction seems a promising way. However, the development of such ensembles is costly. To cut down the engineering effort, we...
Technology support for analyzing user interactions to create user-centered interactions (2009)
Burkhardt, D., Nazemi, K., Bhatti, N., Hornung, C.
Alternative interaction devices become more important in the communication between users and computers. Parallel graphical User Interfaces underlay a continuous development and research. But today...
SeMap: A concept for the visualization of semantics as maps (2009)
Nazemi, K., Breyer, M., Hornung, C.
The enhancement of the individual knowledge is a basic need that came up with changes in our society, whereas the process of learning disappears more and more. In the recent past the disappearance of...
eKnowledge repositories in eLearning 2.0: UNITE - a european-wide network of schools (2008)
Hornung, C., Granic, A., Cucusic, M., Nazemi, K.
The upcoming Web 2.0 technologies change the aspects of eLearning fundamentally. The traditional paradigm of classroom teaching and homework learning will develop further towards sharing experiences...
Intuitive authoring on web: A user-centered software design approach (2008)
To motivate users to work with computer-based systems, to enhance their usage frequency, and to avoid that users get frustrated while working with computer-based systems, it is necessary to respond...
Adaptive tutoring in virtual learning worlds (2007)
Nazemi, K., Bhatti, N., Godehardt, E., Hornung, C.
To enhance the learning success of the learners in the Virtual Learning Worlds (VLW) and effective of VLW, the aspects like precognition and learning aptitude of the learners play a key role. The...
Keeping the learning history (2005)
Godehardt, E., Bhatti, N., Hornung, C.
Life long learning is essential today. To support learner as well as the teacher in this learning process by computer systems is a logical consequence. This paper describes the new approach in...
Virtual Learning World (VLW) is an e-Learning system, where the Virtual Worlds are used for educational purposes. This paper describes the design and concept of the VLW and shows the "Virtual Car...
Distributed authoring in the area of eLearning (2005)
To support distributed groups of authors it is not only necessary to provide convenient software components, but also mechanisms to enable sharing and reuse between authors. For this purpose, we have...
Modular virtual learning world (2005)
Bhatti, N., Godehardt, E., Hornung, C.
Web-based Three-dimensional collaborative and impressive Virtual Learning Environments (VLE) offer considerable promise for the design of effective constructivist learning environments. Collaboration...
E-Learning und knowledge management (2002)
In Zukunft werden Arbeitsprozesse zunehmend wissensbasiert durchgeführt werden. Daher werden der Wissenaustausch und die Verbesserung des Unternehmenswissens zu einem entscheidenden...
Knowledge visualization based on topic maps for computer-based learning applications (2001)
We are living in a world where everyday more and more information is being produced. One of today's challenge faced by developers in the field of Knowledge Management is research an the search of new...
Novedades para la Flora del Estado Mérida, 1. Nuevos Registros de Bromeliaceae (1999)
The findings of a research conducted in the Bromeliaceae of the state of Mérida, during the years 1997.1998 are dealt with here. A new record for the Bromeliaceae flora of Venezuela was confirmed...
In this article a terminological tool is introduced to facilitate working with Bromeliaceae and the key of Mérida State species is given. Due to this, terms used and adapted exclusively for...
A concept and system architecture for IT-based lifelong learning (1998)
Encarnação, J.L., Mengel, M., Bono, P.R., Böhm, K., Borgmeier, E., Brisson Lopes, J.M., ...
PLATINUM. Worldwide distributed courseware production, learning and training using MTS (1998)
Hornung, C., Encarnação, L.M., Barton, R.
This paper presents the modular training system MTS, the PLATINUM-Net, a worldwide network for innovative learning and advanced training, and distributed collaborative training on demand as well aws...
Lehren und Lernen im Intranet (1998)
Hornung, C., Schrödter, F., Wang, T., Borgmeier, E.
Die effiziente Weiterbildung der Mitarbeiter ist fuer viele Unternehmen zu einem Schluesselfaktor geworden. Entsprechend hoch ist das Interesse an computerunterstuetzter Weiterbildung. Trotzdem hat...
Lehren und Lernen im Internet (1998)
The increasing usage of multimedia and Internet-technologies creates new possibilities for teaching and learning. Tele-presence scenarios and the access to worldwide distributed, dynamically changing...
This paper describes frameworks for cooperative distributed simulation and validation environments. Starting with requirements of such systems a corresponding set of CORBA-based frameworks is...
VIVA: Virtual validation in conceptual design (1997)
This paper presents VIVA, an environment for validation and its underliying conceptual model for reusable experiments. The new aspects of this approach are the strict separation betwee nodels,...
Stand-alone work is the most common form of man-machine interaction since the beginning of the computer era. The user interacts only and exclusively with the machine, by asking for and obtaining...
MUSE: Cooperative Design of Complex Heterogeneous Systems (1997)
Hornung, C., Kühnapfel, B., Lux, G.
The objective of the MUSE (Multimedia Systems Engineering) system is to advance the quality and the efficiency of the cooperative and interdiciplinary design of process (requirements analysis and...
Based on the results of and experience gathered during several national and international training and teaching projects, this paper proposes a new style of learning in the upcoming information age...
The IDEALS Modular Training System (1997)
Böhm, K., Hornung, C., Lindner, R.
The modular training system MTS, which was developed within the European project IDEALS , anticipates tomorrow's learning scenarios by provieding flexible, on-demand, user-adaptive, co-operative...
Assisting the design and optimization of high quality parallel renderers (1996)
Lobo Netto, M., Lange, B., Hornung, C.
This Chapter presents DOMAIN, an integrated software environment for development of parallel programs and its use to distribute RAYVOLUTION, an evolutionary ray tracer. DOMAIN combines different...
Objektorientierung und Computer-Graphik bilden ein interessantes Gespann: Einerseits laesst sich die Programmierung durch graphische Unterstuetzung vereinfachen, andererseits beeinflusst...
Using Hypermedia to support Meta-Editing of Multimedia Editing Sessions (1995)
Marcos, A., Martins, J., Hornung, C.
In dem Seminar wird die Notwendigkeit beschrieben, die Bewertung innovativer Technologien, wie z.B. der FVK-Technologie, mit einer Bilanzgrenze durchzuführen, die neben der Herstellung auch die...
Software Development. A cooperative approach (1995)
Computer-Supported Cooperative Software Development (CS-CSD) encompasses the questions of furnishing the necessary conditions for a successful teamwork on software development, being people...
Assisting the design and optimization of high quality parallel renderers (1995)
Hornung, C., Lange, B., Lobo Netto, M.
This paper presents DOMAIN, an integrated software environment for development of parallel prorams and its use th distribute RAYVOLUTION, an evolutionary ray tracer. DOMAIN combines different types...
Using multimedia to support cooperative software development (1994)
The aim of this paper is to propose a global solution to support Cooperative Software Development (CSD) through a multimedia environment. CSD systems have as main goal to enable several users...
Computer-supported cooperative work (CSCW). Stand und Perspektiven (1994)
Hornung, C., Noll, S., Encarnação, J.L.
Computer-Supported Cooperative Work (CSCW) führt neue Technologien und Anwendungen ein, welche Kommunikation und Verteilung von Informationen zwischen Personen und innerhalb von Gruppen...
Video and audio communication over LAN (1993)
Tritsch, B., Vieira, A.S., Hornung, C.
The main goal of today's computer communication is to be as close as possible to real human communication, where media such as voice, image and gesture should be accurately simulated by the available...
A solution to global illumination by genetic algorithms (1993)
A new approach to optimize the computer simulation of radiant light transfer by means of evolutionary techniques for the generation of photorealistic images is introduced. The formulation of radiant...
Konzeption eines objektorientierten Ray Tracers im Rahmen von PREMO (1993)
In der objektorientierten Architektur des neuen Graphik- und Multimedia-Standards PREMO sind Foundation Objects und Komponenten-spezifische Objektklassen definiert. Diese Objekthierarchie wird einem...
DEDICATED - learning on networked multimedia platforms (1993)
Tritsch, B., Encarnação, J.L., Hornung, C.
The development of a distributed and heterogeneous generic multimedia learning environment presents many issues. The hardware, software and network platforms are heterogeneous, so device-independence...
Cooperative HyperMedia - An Enabling Paradigm for Cooperative Work (1993)
Hornung, C., Jäger, M., Santos, A., Tritsch, B.
This paper describes the integration of computer supported cooperative work (CSCW), multimedia and hyperstructures into a single framework, called Cooperative HyperMedia (CHM). The concept of CHM...
Eurographics '93 Tutorial: Cooperative User-Interfaces and Networks for Collaboration (1993)
We focus on understanding the workplace and technology currently appearing for CSCW and groupware development. The tutorial addresses the software implementation challenges that accompany groupware...
We describe CoMEdiA, a Cooperative hyperMedia Editing Architecture. CoMEdiA is a software tool that has been conceived having as main guidlines: cooperative work, multimedia data, hyper features,...
DOMAIN - Monitoring paralleler Anwendungen (1992)
DOMAIN ist ein integriertes System zur Steuerung verteilter Anwendungen. Es enthält Module zur Steuerung der Kommunication, für das Monitoring und für die Prozeßsteuerung. DOMAIN basiert auf dem...
A proposal for a reference model for cooperative HyperMedia systems (1992)
At the time being, there are many different systems claiming to be either multimedia, hypermedia, or supporting collborative/cooperative work. In the following paper, a first attempt to clearify the...
The triangle shading engine (1991)
This paper describes an algorithm for the Gouraud-shading of triangles and its realization in hardware. First, different realizations using span-shading hardware are discussed. Their drawbacks then...
Eine verteilte Realisierung von DaRender (1991)
Hornung, C., Lange, B., Lobo Netto, M.
Im folgenden werden zwei unterschiedliche Strategien zur Parallelisierung von DaRender, einer am Graphikstandard PHIGS-PLUS orientierten Rendering Pipeline zur Erzeugung von dreidimensionalen,...
Some issues on cooperative multimedia editing (1991)
Die Wahrnehmung von Bewegung nimmt im visuellen System eine besondere Stellung ein. So ist das Auflösungsvermögen des Auges für langsam bewegte Objekte höher als für ruhende. Diese Bevorzugung...
DEDICATED. Development of a new dimension in European computer-aided teaching and education (1991)
Encarnação, J.L., Günther, M., Hornung, C., Knierriem, A., Kuhlmann, H.
The development of a new dimension in European computer-aided teaching and education - DEDICATED - is an R and D proposal that aimes at the promotion of institutional cooperation on a European scale,...
An architecture for a high performance programmable rendering engine (1991)
We present an architecture for a hogh-performance programmable rendering engine. This chip or chip-set will be able to deliver one Gouraud-shaded, z-buffered, texture-modulated and alphablended pixel...
DEDICATED - Computer Graphics für den Unterricht (1990)
DEDICATED (DEvelopment of a new DImension in Computer Aided Teaching and EDucation) ist eine Initiative, die im Frühjahr 1989 von Herrn Prof. Encarnacao gestartet wurde. Ziel ist die Installation...
Highlight shading. Lighting and shading in a PHIGS plus/PEX - environment (1989)
Todays graphics standard for the rendering of scenes with illumination and reflection is defined by PHIGS+. PEX is a proposal to integrate that functionality into the window environment of X. This...
Schipper, C., Hornung, C., Bijtenhoorn, P., Quitschau, M., Grond, S., Streit, W. R.
Here we report the isolation and characterization of three metagenome-derived clones that interfere with bacterial quorum sensing and degrade N-(3-oxooctanoyl)-l-homoserine lactone (3-oxo-C8-HSL). By...