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Computers and especially computer networks have become an important part of our everyday life. Almost every device we use is equipped with a computer or microcontroller. Recent technology has even boosted this development by miniaturization of the size of microcontrollers. These are used to either process or collect data. Miniature senors may sense and collect huge amounts of information coming from nature, either from environment or from our own bodies. To process and distribute the data of these sensors, wireless sensor networks (WSN) have been developed in the last couple of years. Several microcontrollers are connected over a wireless connection and are able to collect, transmit and process data for various applications. Today, there are several WSN applications available, such as environment monitoring, rescue operations, habitat monitoring and smart home applications. The research group of Prof. Elaine Lawrence at the University of Technology, Sydney (UTS) is focusing on mobile health care with WSN. Small sensors are used to collect vital data. This data is sent over the network to be processed at a central device such as computer, laptop or handheld device. The research group has developed several prototypes of mobile health care. This thesis will deal with enhancing and improving the latest prototype based on CodeBlue, a hardware and software framework for medical care.
In Silico simulation of biological systems is an important sub area of computational biology (system biology), and becomes more and more an inherent part for research. Therefore, different kinds of software tools are required. At present, a multitude of tools for several areas exists, but the problem is that most of the tools are essentially application specific and cannot be combined. For instance, a software tool for the simulation of biochemical processes is not able to interact with tools for the morphology simulation and vice versa. In order to obtain realistic results with computer-aided simulations it is important to regard the biological system in its entirety. The objective is to develop a software framework, which provides an interface structure to combine existing simulation tools, and to offer an interaction between all affiliated systems. Consequently, it is possible to re-use existing models and simulation programs. Additionally, dependencies between those can be defined. The system is designed to interoperate as an extendable architecture for various tools. The thesis shows the usability and applicability of the software and discusses potential improvements.
Zahlreiche Studien belegen, dass menschliche Bewegungen Informationen über den Akteur in sich bergen. Beobachter sind daher in der Lage, Dinge wie Persönlichkeit, Geschlecht und Gefühlslage allein aus Bewegungen von Menschen zu erkennen. Um dem Ziel nach glaubwürdigen und realistischen virtuellen Charakteren näher zu kommen, verbesserte sich in den letzten Jahren vorwiegend das Aussehen der Charaktere. Dank moderner Techniken und einer rapiden Entwicklung der Computer Hardware können heute visuell extrem realistische Charaktere in virtuellen Echtzeitumgebungen dargestellt werden. Trotz ihrer visuellen Qualität werden sie jedoch in interaktiven Umgebungen häufig als mechanisch wahrgenommen. Diese Störung der Illusion, einem lebendigen, Menschen ähnlichem Lebewesen gegen über zu stehen ist in einem mangelndem menschlichen Verhalten des virtuellen Charakters begründet. Daher können ausdrucksvolle Bewegungen, die einen emotionalen Zustand des Charakters vermitteln, dazu verhelfen dem Menschen ähnlichere und daher glaubwürdigere Charaktere zu realisieren. Im Rahmen dieser Diplomarbeit wird die Umsetzbarkeit eines Systems zur automatischen Generierung emotional expressiver Charakter Animationen untersucht. Übliche Techniken zur Erstellung von Animationen sind sehr aufwendig und zeitintensiv. Um alle möglichen Variationen von Bewegungen in einer interaktiven Umgebung zu erstellen kommen solche Ansätze daher nicht in Frage. Um interaktive Charakter zu ermöglichen, welche in der Lage sind ihre Gefühle zum Ausdruck zu bringen, wird daher diese Problematik im Zuge dieser Diplomarbeit behandelt werden. Einschlägige Literatur aus Forschungsgebieten, welche sich mit Emotionen und Bewegungen befassen werden im Rahmen dieser Arbeit untersucht. Eigenschaften, anhand derer Menschen Emotionen in Bewegungen erkennen, werden technisch in einem Animationssystem umgesetzt, um aus neutralen Animationen emotionale Bewegungen zu generieren. Abschliessend werden die erstellten Ergebnisanimationen in Tests ausgewertet in Bezug auf Erkennbarkeit der Emotionen und Qualität der Ergebnisse.
Interactive video retrieval
(2006)
The goal of this thesis is to develop a video retrieval system that supports relevance feedback. One research approach of the thesis is to find out if a combination of implicit and explicit relevance feedback returns better retrieval results than a system using explicit feedback only. Another approach is to identify a model to weight existing feature categories. For this purpose, a state-of-the-art analysis is presented and two systems implemented, which run under the conditions of the international TRECVID workshop. It will be a basis system for further research approaches in the field of interactive video retrieval. Amongst others, it shall participate in the 2006 search task of the mentioned workshop.