Refine
Departments, institutes and facilities
- Fachbereich Informatik (606)
- Fachbereich Ingenieurwissenschaften und Kommunikation (235)
- Institut für Technik, Ressourcenschonung und Energieeffizienz (TREE) (216)
- Institute of Visual Computing (IVC) (210)
- Institut für Cyber Security & Privacy (ICSP) (201)
- Fachbereich Wirtschaftswissenschaften (148)
- Institut für Verbraucherinformatik (IVI) (134)
- Fachbereich Angewandte Naturwissenschaften (76)
- Institut für funktionale Gen-Analytik (IFGA) (56)
- Internationales Zentrum für Nachhaltige Entwicklung (IZNE) (54)
Document Type
- Conference Object (1806) (remove)
Year of publication
Keywords
- FPGA (11)
- Machine Learning (9)
- Usable Security (9)
- Virtual Reality (9)
- Privacy (8)
- Robotics (7)
- Sustainability (7)
- DPA (6)
- Education (6)
- Entrepreneurship (6)
The Waveform Relaxation Method (WRM) is introduced as a generalization of different methods used in circuit simulation. Next we present an algorithm to partition the network using so called signal flow graphs and its implementation in the experimental simulator SISAL. At last some new concepts to enhance the performance of the WRM are presented and first results are reported.
The numerical solution of implicit ordinary differential equations arising in vehicle dynamic
(1988)
Passive high-Tc components
(1990)
Influence of priorities on the performance of a fast packet switch in the case of bursty traffic
(1992)
Towards a Generalization of Production Theory - "Soft" Production Functions Using Fuzzy Set Theory
(1992)
On the design and performance of a hybrid-integrated high-T c superconducting C-band oscillator
(1992)
Client/Server-Systeme: Schlüsseltechnologie für die betriebliche Datenverarbeitung der 90er Jahre
(1993)
Narrow-band YBCO superconducting parallel-coupled coplanar waveguide band-pass filters at 10 GHz
(1993)
Zumutbarkeit von Arbeit
(1994)
Influence of Statistical Properties of Video Signals on the Power Dissipation of CMOS Circuits
(1994)
This paper describes a codesign environment based on the WWW (World Wide Web) and its implementation. Tool invocations and their respective results are linked using hypertext documents. We show how to configure a WWW browser for spawning design tools and how frequent tasks like documentation generation and retrieval are facilitated. The design flow can be adopted to the given application very easily. In addition we introduce the concept of a work flow called ‘design by documentation’. A WWW link to the results is given and experience using it in a codesign project is described.
Filling the Pipe
(1995)
An Information on Demand teleservice that was developed at the German National Research Center for Information Technology (GMD) provides remote access to multimedia information consisting of audio, video, and text [jonas et al. 94]. It uses a bidirectional narrowband message link between the end user and the service provider, and a unidirectional broadband data link from the service provider to the end user. Since the IoD teleservice is used across a satellite connection (among others), it turned out to be necessary to implement an access protocol that is optimized for the access of real-time multimedia data across a long-delay high-bandwidth link, a long fat pipe [jacobsen et al. 92]. This paper introduces the MediaService Protocol (MSP) and describes a prototype implementation (version 0.6).
Three emerging technologies are combined in a setup that has been installed and tested at GMD - the German National Research Center for Information Technology: 1. Multimedia Telecooperation Applications; 2. ATM-based high-speed networks; 3. Satellite links. The results are promising: After some initial problems, the complete scenario is up and running, allowing the interconnection of local high-speed infrastructures in rural areas to a core network via satellite. This paper describes the R&D background and state- of-the-art that led us to this approach. It then describes the communication infrastructure and the application infra- structure of the setup, the problems we had and the solu- tions we found. Finally, our experiences are summarized, and an outlook is made for future implementations.
The Information Footprint
(1995)
Cosynthesis in CASTLE
(1995)
We propose a new alignment procedure that is capable of aligning protein sequences and structures in a unified manner. Recursive dynamic programming (RDP) is a hierarchical method which, on each level of the hierarchy, identifies locally optimal solutions and assembles them into partial alignments of sequences and/or structures. In contrast to classical dynamic programming, RDP can also handle alignment problems that use objective functions not obeying the principle of prefix optimality, e.g.\ scoring schemes derived from energy potentials of mean force. For such alignment problems, RDP aims at computing solutions that are near-optimal with respect to the involved cost function and biologically meaningful at the same time. Towards this goal, RDP maintains a dynamic balance between different factors governing alignment fitness such as evolutionary relationships and structural preferences. As in the RDP method gaps are not scored explicitly, the problematic assignment of gap cost parameters is circumvented. In order to evaluate the RDP approach we analyse whether known and accepted multiple alignments based on structural information can be reproduced with the RDP method. For this purpose, we consider the family of ferredoxins as our prime example. Our experiments show that, if properly tuned, the RDP method can outperform methods based on classical sequence alignment algorithms as well as methods that take purely structural information into account.
Comparative analysis of US-American and German standard production planning and control systems
(1995)
ATM virtual studio services
(1996)
The term "virtual studio" refers to real-time 3D graphics systems used to render a virtual set in sync with live camera motion. As the camera pans and zooms, the virtual set is redrawn from the correct perspective. Using blue room techniques, actors in front of the real camera are then “placed in” the virtual set. Current virtual studio systems are centralized – the blue room, cameras, renderers etc. are located at a single site. However distributed configurations offer significant economies such as the sharing of expensive rendering equipment among many sites. This paper describes early expe- riences of the DVP1 project in the realization of a distributed virtual studio. In particular we de- scribe the first video production using a distributed virtual studio over ATM and make observations concerning network QOS requirements.
This paper presents an overview on and reports on early experiences of the European ACTS project AC089 called „Distributed Video Production (DVP)“ which started in late 1995. Central to DVP are distributed pilot applications for professional digital video production over ATM broadband networks (LAN and WAN). Distributed video production refers to situations where the cameras, recorders, switches, mixers and other equipment used in video production (or post-production) are located at several sites linked by high bandwidth network connections. The DVP project investigates requirements of broadcasters for several forms of distributed video production and runs a series of trials of distributed virtual studios, distributed rehearsals and remote video editing and retrieval. Together with North American partners a transatlantic broadband ATM link will be tested for distributed virtual reality simulations. This paper reports about two initial tests with a German public broadcaster and the German Telekom. DVP project partners are GMD and about 20 broadcasters, computer and video equipment manufacturers, and video production companies. More information can be obtained from http://viswiz.gmd.de/DVP
News on demand
(1996)