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Multipoint data-communications is among the hot topics of communication research and development. A lot of studies and ideas have been presented, the vast majority focusing on a homogenous environment in terms of physical network, communication protocol stacks, coding schemes and/or service qualities. First straight-forward implementations –Steve Deering‘s IP multipoint on the MBone being the most popular one– already give an idea of the capabilities of a multipoint environment.
UTRAN Internet Access
(1999)
Imagine a person navigating on the trackball of a mouse - it would need full body control. In this article we describe the Virtual Balance, an input device for a responsive virtual environment. This device is driven by weight shift on a small platform and does neither require special training nor wearing uncomfortable equipment. The Virtual Balance aims at intuitive navigation through complex 3D space. It can be used to skate or fly like on a magic carpet through a virtual world. With shifts of body posture the navigator controls speed and direction of his/her movement in the model world, which is calculated from the changing pressure on three weight cells under the platform. Different fields of application are presented, showing scenarios already realized as well as a variety of possibilities for future use.
Wettbewerbsvorteile werden in der Zukunft weitgehend durch ein effizientes Management von Veränderungen erzielt. Somit sind Veränderungsprozesse derzeit ein selbstverständlicher Bestandteil im Management geworden. Die Einführung einer TQM-Philosophie kann in diesem Zusammenhang ein erfolgversprechender Ansatz sein. Dabei gilt es zunächst, die vorliegenden Konzepte zu vergleichen und hinsichtlich einer spezifischen Unternehmenssituation einen entsprechenden Ansatz festzulegen.
CASTLE is a co-design platform developed at GMD SET institute. It provides a number of design tools for configuring application specific design flows. This paper presents a walk through the CASTLE co-design environment, following the design flow of a video processing system. The design methodology and the tool usage for this real life example are described, as seen from a designers point of view. The design flow starts with a C/C++ program and gradually derives a register-transfer level description of a processor hardware, as well as the corresponding compiler for generating the processor opcode. The main results of each design step are presented and the usage of the CASTLE tools at each step is explained.
Dual Dynamics (DD) is a mathematical model of a behavior control system for mobile autonomous robots. Behaviors are specified through differential equations; forming a global dynamical system made of behavior subsystems which interact in a number of ways. DD models can be directly compiled into executable code. The article (i) explains the model; (ii) sketches the Dual Dynamics Designer (DDD) environment that we use for the design; simulation; implementation and documentation; and (iii) illustrates our approach with the example of kicking a moving ball into a goal.
Wissenschaftliches Rechnen
(1999)