Enner F.,Salzburg University of Applied Sciences |
Rollinson D.,Carnegie Mellon University |
Choset H.,Carnegie Mellon University
Proceedings - IEEE International Conference on Robotics and Automation | Year: 2012
We present a general method of estimating a snake robot's motion over flat ground using only knowledge of the robot's shape changes over time. Estimating world motion of snake robots is often difficult because of the complex way a robot's cyclic shape changes (gaits) interact with the surrounding environment. By using the virtual chassis to separate the robot's internal shape changes from its external motions through the world, we are able to construct a motion model based on the differential motion of the robot's modules between time steps. In this way, we effectively treat the snake robot like a wheeled robot where the bottom-most modules propel the robot in much the way the bottom of the wheels would propel the chassis of a car. Experimental results using a 16-DOF snake robot are presented to demonstrate the effectiveness of this method for a variety of gaits that have been designed to traverse flat ground. © 2012 IEEE.
Egger R.,Salzburg University of Applied Sciences
Journal of Hospitality and Tourism Technology | Year: 2013
Purpose: Near field communication (NFC) is currently perceived to be one of the most promising technologies for the future and will most likely become the standard in mobile devices in the years to come. Due to the novel nature of this technology, the assessment of its importance for the tourism industry is still relatively unclear. The author is one of the first to focus on NFC in tourism, with the aim of introducing NFC technology and drafting first responses to the following questions: what benefit can NFC technology have for tourism and what functionalities can it trigger? What are the possible future applications in tourism and what challenges will tourism be faced with in this respect? Design/methodology/approach: The potential of NFC for the tourism industry is outlined in an extensive literature research, as well as in the presentation and discussion of several pilot projects and case studies. Findings: The paper provides an overview of NFC functionalities and presents a first insight into the range of application for this technology in the tourism industry. The NFC ecosystem is examined and operative and strategic effects for companies, as well as the impacts for tourists, are analysed. Practical implications: NFC has a huge potential and offers a vast field of possible applications for the tourism industry. The technology must be seen, however, as an enabler that cannot solve problems from a supplier perspective, or increase convenience from a consumer perspective by itself. This paper helps to understand the complexity of NFC as a technology, the need for a common understanding and vision of its ecosystem, consistent business models which generate additional benefit, as well as the combination of market push-and-pull effects with regard to adoption and diffusion. Social implications: Modern society is virtually inconceivable without mobile devices and the consequent use of mobile services. The multitude of technologies incorporated in the tiniest space has turned mobile phones, and smart phones in particular, into the Swiss knives of our times. NFC could change the way we interact, share, exchange and retrieve information. Originality/value: Little research has so far been carried out on this topic and the author is one of the first to focus on NFC in tourism so far. © Emerald Group Publishing Limited.
Lampoltshammer T.J.,Salzburg University of Applied Sciences
Sensors (Basel, Switzerland) | Year: 2014
The percentage of elderly people in European countries is increasing. Such conjuncture affects socio-economic structures and creates demands for resourceful solutions, such as Ambient Assisted Living (AAL), which is a possible methodology to foster health care for elderly people. In this context, sensor-based devices play a leading role in surveying, e.g., health conditions of elderly people, to alert care personnel in case of an incident. However, the adoption of such devices strongly depends on the comfort of wearing the devices. In most cases, the bottleneck is the battery lifetime, which impacts the effectiveness of the system. In this paper we propose an approach to reduce the energy consumption of sensors' by use of local sensors' intelligence. By increasing the intelligence of the sensor node, a substantial decrease in the necessary communication payload can be achieved. The results show a significant potential to preserve energy and decrease the actual size of the sensor device units.
Bachle H.,TU Munich |
Zimmer B.,Salzburg University of Applied Sciences |
Windeisen E.,TU Munich |
Wegener G.,TU Munich
Wood Science and Technology | Year: 2010
Quality assessment of thermally modified spruce (Picea abies (L.) Karst) and beech (Fagus sylvatica L.) wood and of the corresponding reference samples was carried out by means of non-destructive FT-NIR spectroscopic measurements and PLS regression. Oven-dry and basic density as well as MOE and MOR determined by 3-point bending tests were evaluated. The focus was put on specimens produced from material that had been thermally modified in an industrial scale kiln. Modelling results range from poor to very good. The results of the spectra taken from the spruce samples resulted in better prediction results than the spectra of the beech samples. This could be due to different proveniences or variation in the industrial modification process. The results indicate that FT-NIR surface measurements of sound thermally modified wood samples could be applied to evaluate several characteristics before and after the modification process. The method could be used for screening during pre-sorting of thermally modified wood. © 2010 Springer-Verlag.
Stutz T.,Salzburg University of Applied Sciences |
Stutz T.,University of Nantes |
Uhl A.,Salzburg University of Applied Sciences |
Uhl A.,University of Salzburg |
Uhl A.,Carinthia Technology Institute
IEEE Transactions on Circuits and Systems for Video Technology | Year: 2012
Video encryption has been heavily researched in the recent years. This survey summarizes the latest research results on video encryption with a special focus on applicability and on the most widely-deployed video format H.264 including its scalable extension SVC. The survey intends to give researchers and practitioners an analytic and critical overview of the state-of-the-art of video encryption narrowed down to its joint application with the H.264 standard suite and associated protocols (packaging/streaming) and processes (transcoding/watermarking). © 2011 IEEE.