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In the past decade computer models have become very popular in the field of biomechanics due to exponentially increasing computer power. Biomechanical computer models can roughly be subdivided into two groups: multi-body models and numerical models. The theoretical aspects of both modelling strategies will be introduced. However, the focus of this chapter lies on demonstrating the power and versatility of computer models in the field of biomechanics by presenting sophisticated finite element models of human body parts. Special attention is paid to explain the setup of individual models using medical scan data. In order to reach the goal of individualising the model a chain of tools including medical imaging, image acquisition and processing, mesh generation, material modelling and finite element simulation –possibly on parallel computer architectures- becomes necessary. The basic concepts of these tools are described and application results are presented. The chapter ends with a short outlook into the future of computer biomechanics.
Ordnung des Institutes für Detektionstechnologie an der Hochschule Bonn-Rhein-Sieg vom 23.09.2010
(2011)
In this paper, the performance evaluation of Frequency Modulated Chaotic On-Off Keying (FM-COOK) in AWGN, Rayleigh and Rician fading channels is given. The simulation results show that an improvement in BER can be gained by incorporating the FM modulation with COOK for SNR values less than 10dB in AWGN case and less than 6dB for Rayleigh and Rician fading channels.
Diese Bachelor-Thesis entwickelt ein Charakterisierungskonzept für ein autostereoskopisches 3D-Display. Der daraus entstandene Parametersatz ist die Grundlage für die Anforderungen eines 3D-Charakterisierungsmessplatzes. Die Arbeit zeigt die Auswahl geeigneter Komponenten und Methoden um einen 3D-Charakterisierungsmessplatz aufzubauen. Mithilfe des neuartigen Aufbaus wird ein autostereoskopisches Display charakterisiert. Nach der Auswertung der gewonnen Messwerte wird der ermittelte Parametersatz dem Lastenheft gegenübergestellt. Mögliche Fehlerquellen im Aufbau und der Ansteuerung des Displays werden lokalisiert und soweit es möglich ist behoben.
Hochschule in Bewegung
(2010)
Zukunft nachhaltig gestalten
(2010)
Gebührenordnung der Hochschul- und Kreisbibliothek der Hochschule Bonn-Rhein-Sieg vom 18.02.2010
(2010)
We have designed an inexpensive intelligent pedestrian counting system. The pedestrian counting system consists of several counters that can be connected together in a distributed fashion and communicate over the wireless channel. The motion pattern is recorded using a set of passive infrared (PIR) sensors. Each counter has one wireless sensor node that processes the PIR sensor data and transmits it to a base station. Then echo state network, a special kind of recurrent neural network, is used to predict the pedestrian count from the input pattern. The evaluation of the performance of such networks in a novel kind of application is one focus of this work. The counter gave a performance of 80.4% which is better than the commercially available low-priced pedestrian counters. The article reports the experiments we did for analyzing the counterperformance and lists the strengths and limitations of the current implementation. It will also report the preliminary test results obtained by substituting the PIR sensors with low-cost active IR distance sensors which can improve the counter performance further.