ETH - Electronics Laboratory - E_Publication

Verwebbare Elektronik , Zysset, Christoph, Kinkeldei, Thomas, Cherenack, Kunigunde, Münzenrieder, Niko, Tröster, Gerhard, 2011 >>

Author(s):	Zysset, Christoph, Kinkeldei, Thomas, Cherenack, Kunigunde, Münzenrieder, Niko, Tröster, Gerhard
Title:	Verwebbare Elektronik
Abstract:	Intelligente Textilien und Bekleidung kombinieren Elektronik, Sensoren und Textilien, um das Funktionsspektrum von Textilien z. B. in den Bereichen Kleidung, Innenausstattung und technische Textilien, zu erweitern. Es wird ein Verfahren vorgestellt, das mit der IC-Technik, Dünnfilm- und Packagingtechnologie sowie mit dem textilen Weben grosstechnisch etablierte Prozesse kombiniert und damit eine kostengünstige Grossserienproduktion erlaubt. Das Verfahren gliedert sich in mehrere Schritte. Flexible Plastiksubstrate werden in Streifen geschnitten; sie dienen als Trägermaterial für ICs, Dünnfilmbauteile, Sensoren, Verbindungsleitungen und Kontaktflächen. Diese funktionalisierten Streifen werden in Schussrichtung auf Webmaschinen eingewoben. Die rechtwinklige Anordnung im Gewebe ermöglicht elektrische Verbindungen der Streifen untereinander und zur Aussenwelt durch leitende Garne. Anhand eines Demonstrators wird die Umsetzbarkeit dieser Technologie aufgezeigt und die mechanische Robustheit analysiert.
Book title:	Proceedings / Mikrosystemtechnik-Kongress 2011 : 10. - 12. Oktober 2011, Darmstadt
Pages:	257 - 260
ISBN:	978-3-8007-3367-5
Publication date / Date received:	2011-01-01
Publication status:	Berlin; Offenbach
Publication status:	Published
Event name:	MikroSystemTechnik - Kongress 2011
Event date:	October 10-12, 2011
Place:	Darmstadt, Germany
Language:	German
Review status:	Peer reviewed
DBID source:	FORM-1326726060

Real-time Detection and Recommendation of Thermal Spots by Sensing Collective Behaviors in Paragliding , Wirz, Martin, Strohrmann, Christina, Patscheider, Roman, Hilti, Fabian, Gahr, Bernhard, Hess, Frederik, Roggen, Daniel, Tröster, Gerhard, 2011 >>

Author(s):	Wirz, Martin, Strohrmann, Christina, Patscheider, Roman, Hilti, Fabian, Gahr, Bernhard, Hess, Frederik, Roggen, Daniel, Tröster, Gerhard
Title:	Real-time Detection and Recommendation of Thermal Spots by Sensing Collective Behaviors in Paragliding
Abstract:	Community intelligence is often manifested in distinct collective behavior patterns. We investigate on the exemplary use case of paragliding how real-time participatory mobile sensing can be exploited to infer collective behavior patterns and to conclude about community intelligence. In particular, we present a system to simultaneously aggregate flight information from many paraglider pilots using their location-aware mobile phones. We show that the real-time detection of collective behavior patterns that emerge among the pilots leads to an uncovering of regions with ideal thermal characteristics. Providing an intuitive visualization of this collectively gathered information can help pilots to extend their flight time and to fly longer distances. We perform a series of test flights to assess the technical feasibility as well as the real-time performance and conduct interviews with experienced pilots to evaluate user aspects and incentivization.
Book title:	SCI '11 : Proceedings of 1st International Symposium on From Digital Footprints to Social and Community Intelligence
Pages:	7 - 12
ISBN:	978-1-4503-0925-7
Publication date / Date received:	2011-01-01
Publication status:	New York
Publication status:	Published
Subjects:	Crowd sensing, Participatory sensing, Community intelligence
Event name:	1st International Symposium on From Digital Footprints to Social and Community Intelligence (SCI '11)
Event date:	September 18, 2011
Place:	Beijing, China
Language:	English
Review status:	Peer reviewed
Keyword:	Crowd sensing, Participatory sensing, Community intelligence
DBID source:	FORM-1326733690
DOI:	10.1145/2030066.2030070

Towards an online detection of pedestrian flocks in urban canyons by smoothed spatio-temporal clustering of GPS trajectories , Wirz, Martin, Kjaergaard, Mikkel, Feese, Sebastian, Schläpfer, Pablo, Roggen, Daniel, Tröster, Gerhard, 2011 >>

Author(s):	Wirz, Martin, Kjaergaard, Mikkel, Feese, Sebastian, Schläpfer, Pablo, Roggen, Daniel, Tröster, Gerhard
Title:	Towards an online detection of pedestrian flocks in urban canyons by smoothed spatio-temporal clustering of GPS trajectories
Abstract:	Detecting pedestrians moving together through public spaces can provide relevant information for many location-based social applications. In this work we present an online method to detect such pedestrian flocks by spatio-temporal clustering of location trajectories. Compared to prior work, our method provides increased robustness against the influence of noisy and missing GPS data often encountered in urban environments. To assess the performance of the method, we record GPS trajectories from ten subjects walking through a city. The data set contains various flock formations and corresponding ground truth information is available. With this data set, we can evaluate the accuracy of our method to detect flocks. Results show that we can detect flocks and their members with an accuracy of 91.3%. We evaluate the influence of noisy and missing location data on the detection accuracy and show that the introduced filtering heuristics provides increased detection accuracy in such realistic situations.
Book title:	LBSN '11 : Proceedings of the 3rd ACM SIGSPATIAL International Workshop on Location-Based Social Networks
Pages:	6
ISBN:	978-1-4503-1033-8
Publication date / Date received:	2011-01-01
Publication status:	New York
Publication status:	Published
Subjects:	Collective Behavior Sensing, Spatio-temporal Clustering, Flock Detection
Event name:	3rd ACM SIGSPATIAL International Workshop on Location-Based Social Networks (LBSN '11)
Event date:	November 1-4, 2011
Place:	Chicago, IL, USA
Language:	English
Review status:	Peer reviewed
Keyword:	Collective Behavior Sensing, Spatio-temporal Clustering, Flock Detection
DBID source:	FORM-1326735494
DOI:	10.1145/2063212.2063220

Shaping Sensor Node Ensembles according to their Recognition Performance within a Planning-based Context Framework , Villalonga, Claudia, Roggen, Daniel, Tröster, Gerhard, 2011 >>

Author(s):	Villalonga, Claudia, Roggen, Daniel, Tröster, Gerhard
Title:	Shaping Sensor Node Ensembles according to their Recognition Performance within a Planning-based Context Framework
Publication date / Date received:	2011-01-01
Publication status:	Published
Event name:	8th International Conference on Networked Sensing Systems (INSS 2011)
Event date:	June 12-15, 2011
Place:	Penghu, Taiwan
Language:	English
Review status:	Unknown
DBID source:	FORM-1326734713

Smart Clothes , Tröster, Gerhard, 2011 >>

Author(s):	Tröster, Gerhard
Title:	Smart Clothes
Subtitle:	The Unfulfilled Pledge?
Abstract:	The article discusses e-textiles technology, the concept of merging information and communications technology (ICT) with textiles and clothes initiated by smart textile companies.
Published in:	IEEE pervasive computing
Volume:	10
Issue:	2
Pages:	87 - 89
ISSN:	1536-1268, 1558-2590
Publication date / Date received:	2011-01-01
Publication status:	New York, NY
Publication status:	Published
Subjects:	Software\|Software, Communication textiles, Interactive textiles, Sensors, Smart fabrics, Wearable computing
Language:	English
Review status:	Peer reviewed
Keyword:	Communication textiles, Interactive textiles, Sensors, Smart fabrics, Wearable computing
DBID source:	WOS-000289273400014
DOI:	10.1109/MPRV.2011.32
Nebis system number:	004310966

ICT4D – How could the ETH Zurich get involved in it? , Tröster, Gerhard, 2011 >>

Author(s):	Tröster, Gerhard
Title:	ICT4D – How could the ETH Zurich get involved in it?
Abstract:	Information and Communication Technologies for Development (ICT4D) is a very relevant and widely researched topic. The ETH Zurich is facing the challenges to balance the engineering potentials for the developing countries and the scientific mission.
Published in:	Perspectives : Newsletter of the North-South Centre
Volume:	2011
Issue:	4
Pages:	2 - 4
Publication date / Date received:	2011-01-01
Publication status:	Zürich
Publication status:	Published
Language:	English
Review status:	Unknown
DBID source:	FORM-1327593909

An IMU-based Sensor Network to Continuously Monitor Rowing Technique on the Water , Tessendorf, Bernd, Gravenhorst, Franz, Arnrich, Bert, Tröster, Gerhard, 2011 >>

Author(s):	Tessendorf, Bernd, Gravenhorst, Franz, Arnrich, Bert, Tröster, Gerhard
Title:	An IMU-based Sensor Network to Continuously Monitor Rowing Technique on the Water
Abstract:	In the sport of rowing athletes and coaches are concerned with optimizing a rower's technique in order to improve rowing performance. In this paper, we present the design and real-world evaluation of a sensor network approach to support improving the rower's performance. In cooperation with professional rowing teams, we found that a network of inertial measurement units (IMUs) is well suited to continuously and unobtrusively monitor important indicators relating to rowing technique. In a feasibility study with 5 participants we first investigated the optimal sensor setup, and in the final setup we attached 3 IMUs to the oars and the boat. From 18 participants (including both ambitious amateurs and world-class rowers) we recorded both training and racing sessions which each consisted of 1000m rowing. We present 4 rowing technique indicators for all 18 participants. Using the example of two world-class rowers we demonstrate in detail how sensor networks support the iterative process of optimizing the individual rowing technique.
Book title:	Seventh International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP 2011)
Pages:	253 - 258
ISBN:	978-1-4577-0675-2
Publication date / Date received:	2011-01-01
Publication status:	Published
Event name:	Seventh International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP 2011)
Event date:	December 6-9, 2011
Place:	Adelaide, SA, Australia
Language:	English
Review status:	Peer reviewed
DBID source:	FORM-1326729161
DOI:	10.1109/ISSNIP.2011.6146535

Identification of Relevant Multimodal Cues to enhance Context-Aware Hearing Instruments , Tessendorf, Bernd, Derleth, Peter, Feilner, Manuela, Kettner, Andreas, Roggen, Daniel, Stiefmeier, Thomas, Tröster, Gerhard, 2011 >>

Author(s):	Tessendorf, Bernd, Derleth, Peter, Feilner, Manuela, Kettner, Andreas, Roggen, Daniel, Stiefmeier, Thomas, Tröster, Gerhard
Title:	Identification of Relevant Multimodal Cues to enhance Context-Aware Hearing Instruments
Publication date / Date received:	2011-01-01
Publication status:	Published
Event name:	6th International ICST Conference on Body Area Networks (BodyNets 2011)
Event date:	November 7-8, 2011
Place:	Beijing, China
Language:	English
Review status:	Unknown
DBID source:	FORM-1326732720

Design of a Bilateral Vibrotactile Feedback System for Lateralization , Tessendorf, Bernd, Derleth, Peter, Feilner, Manuela, Grämer, Tobias, Spuhler, Michael, Stiefmeier, Thomas, Tröster, Gerhard, 2011 >>

Author(s):	Tessendorf, Bernd, Derleth, Peter, Feilner, Manuela, Grämer, Tobias, Spuhler, Michael, Stiefmeier, Thomas, Tröster, Gerhard
Title:	Design of a Bilateral Vibrotactile Feedback System for Lateralization
Abstract:	We present a bilateral vibrotactile feedback system for accurate lateralization of target angles in the complete 360◦range. We envision integrating this system into contextaware hearing instruments (HIs) or cochlear implants (CIs) to support users that experience lateralization difficulties. As a foundation for this it is vital to investigate which kind of feedback and vibration patterns are optimal to provide support for lateralization. Our system enables to evaluate and compare different encoding schemes with respect to resolution, reaction time, intuitiveness and user dependency. The system supports bilateral vibrotactile feedback to reflect integration into HIs or CIs worn at both ears and implemented two approaches: Quantized Absolute Heading (QAH) and Continuous Guidance Feedback (CGF). We provide a detailed description of our hardware that was designed to be also applicable for generic vibrotactile feedback applications.
Book title:	The proceedings of the 13th international ACM SIGACCESS conference
Pages:	233 - 234
ISBN:	978-1-4503-0920-2
Publication date / Date received:	2011-01-01
Publication status:	New York, NY
Publication status:	Published
Event name:	International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS'11)
Event date:	Oktober 24-26, 2011
Place:	Dundee, UK
Language:	English
Review status:	Peer reviewed
DBID source:	FORM-1326731920

Bilateral Vibrotactile Feedback Patterns for Accurate Lateralization in Hearing Instrument Body Area Networks , Tessendorf, Bernd, Derleth, Peter, Feilner, Manuela, Grämer, Tobias, Roggen, Daniel, Spuhler, Michael, Stiefmeier, Thomas, Tröster, Gerhard, 2011 >>

Author(s):	Tessendorf, Bernd, Derleth, Peter, Feilner, Manuela, Grämer, Tobias, Roggen, Daniel, Spuhler, Michael, Stiefmeier, Thomas, Tröster, Gerhard
Title:	Bilateral Vibrotactile Feedback Patterns for Accurate Lateralization in Hearing Instrument Body Area Networks
Publication date / Date received:	2011-01-01
Publication status:	Published
Event name:	6th International Conference on Body Area Networks (Bodynets 2011)
Event date:	November 7-10, 2011
Place:	Beijing, China
Language:	English
Review status:	Unknown
DBID source:	FORM-1326730993

Recognition of Hearing Needs from Body and Eye Movements to Improve Hearing Instruments , Tessendorf, Bernd, Bulling, Andreas, Derleth, Peter, Feilner, Manuela, Roggen, Daniel, Stiefmeier, Thomas, Tröster, Gerhard, 2011 >>

Author(s):	Tessendorf, Bernd, Bulling, Andreas, Derleth, Peter, Feilner, Manuela, Roggen, Daniel, Stiefmeier, Thomas, Tröster, Gerhard
Title:	Recognition of Hearing Needs from Body and Eye Movements to Improve Hearing Instruments
Abstract:	Hearing instruments (HIs) have emerged as true pervasive computers as they continuously adapt the hearing program to the user’s context. However, current HIs are not able to distinguish different hearing needs in the same acoustic environment. In this work, we explore how information derived from body and eye movements can be used to improve the recognition of such hearing needs. We conduct an experiment to provoke an acoustic environment in which different hearing needs arise: active conversation and working while colleagues are having a conversation in a noisy office environment. We record body movements on nine body locations, eye movements using electrooculography (EOG), and sound using commercial HIs for eleven participants. Using a support vector machine (SVM) classifier and person-independent training we improve the accuracy of 77% based on sound to an accuracy of 92% using body movements. With a view to a future implementation into a HI we then perform a detailed analysis of the sensors attached to the head. We achieve the best accuracy of 86% using eye movements compared to 84% for head movements. Our work demonstrates the potential of additional sensor modalities for future HIs and motivates to investigate the wider applicability of this approach on further hearing situations and needs.
Book title:	Pervasive computing : 9th international conference : proceedings
Published in:	Lecture notes in computer science
Volume:	6696
Pages:	314 - 331
ISBN:	978-3-642-21725-8, 978-3-642-21726-5
Publication date / Date received:	2011-01-01
Publication status:	Heidelberg
Publication status:	Published
Subjects:	Computersysteme\|Computer Systems, Hearing Instrument, Assistive Technology, Activity Recognition, Electrooculography (EOG)
Event name:	9th International Conference on Pervasive Computing (Pervasive 2011)
Event date:	June 12-15, 2011
Place:	San Francisco, CA, USA
Language:	English
Review status:	Peer reviewed
Keyword:	Hearing Instrument, Assistive Technology, Activity Recognition, Electrooculography (EOG)
DBID source:	FORM-1326734206
DOI:	10.1007/978-3-642-21726-5_20
Nebis system number:	006570263

Kontexterkennung für Hörgeräte mittels zusätzlicher Sensormodalitäten , Tessendorf, Bernd, Bulling, Andreas, Derleth, Peter, Feilner, Manuela, Roggen, Daniel, Stiefmeier, Thomas, Tröster, Gerhard, 2011 >>

Author(s):	Tessendorf, Bernd, Bulling, Andreas, Derleth, Peter, Feilner, Manuela, Roggen, Daniel, Stiefmeier, Thomas, Tröster, Gerhard
Title:	Kontexterkennung für Hörgeräte mittels zusätzlicher Sensormodalitäten
Book title:	Fortschritte der Akustik : DAGA 2011 ; 37. Jahrestagung für Akustik ; 21. - 24. März 2011 in Düsseldorf
Pages:	373 - 374
ISBN:	978-3-939296-02-7
Publication date / Date received:	2011-01-01
Publication status:	Berlin
Publication status:	Published
Event name:	37. Jahrestagung für Akustik (DAGA 2011)
Event date:	March 21-24, 2011
Place:	Düsseldorf, Germany
Language:	German
Review status:	Peer reviwed
DBID source:	FORM-1326732896

Out of the Lab and Into the Woods , Strohrmann, Christina, Harms, Holger, Tröster, Gerhard, Hensler, Stefanie, Müller, Roland, 2011 >>

Author(s):	Strohrmann, Christina, Harms, Holger, Tröster, Gerhard, Hensler, Stefanie, Müller, Roland
Title:	Out of the Lab and Into the Woods
Subtitle:	Kinematic Analysis in Running Using Wearable Sensors
Abstract:	Injuries in running are often provoked by fatigue or improper technique, which are both reflected in the runner's kinematics. State of the art research on kinematics in sports is using optical motion capture systems that are inaccessible to most athletes. This paper demonstrates the potential of wearable sensors for runners' kinematics analysis. We present a user study including 21 subjects of different running experience that performed an exhausting run on a conventional outside track wearing ETHOS units. For performance level assessment, training assistance, and fatigue monitoring we extracted the foot contact duration, the foot strike type, and the heel lift as kinematic parameters. A questionnaire revealed that subjects perceived the sensors as comfortable to wear and would use them on a regular basis. We concluded that wearable sensors provide a valuable tool for runners, from beginners to experts, for running technique assessment.
Book title:	Ubicomp 11 : Proceedings of the 2011 ACM Conference on Ubiquitous Computing
Pages:	119 - 122
ISBN:	978-1-4503-0630-0
Publication date / Date received:	2011-01-01
Publication status:	New York
Publication status:	Published
Subjects:	Sports, Wearable system, Performance evaluation
Event name:	13th ACM International Conference on Ubiquitous Computing (Ubicomp 11)
Event date:	September 17-21, 2011
Place:	Beijing, China
Language:	English
Review status:	Peer reviewed
Keyword:	Sports, Wearable system, Performance evaluation
DBID source:	FORM-1326733274
DOI:	10.1145/2030112.2030129

What do sensors know about your running performance? , Strohrmann, Christina, Harms, Holger, Tröster, Gerhard, 2011 >>

Author(s):	Strohrmann, Christina, Harms, Holger, Tröster, Gerhard
Title:	What do sensors know about your running performance?
Abstract:	About 489 000 athletes have finished a marathon in the US in 2009, the average training distance of athletes is 47.5 km per week. While average fitness runners (55.8%) train by self perception, a systematic assessment of kinematic parameters is limited to elite athletes that have access to instrumented environments. This work investigates the potential of wearable sensors to derive kinematic features in running. We equipped 12 runners of different performance levels with each 12 miniature ETHOS units. ETHOS constitutes a miniature inertial measurement unit (IMU) that is optimized for long term monitoring in unconstrained environments. We found that a minimum set of two acceleration sensors attached to the athlete's foot and hip is sufficient to derive kinematic features that allow for distinction of experienced and unexperienced runners. Our work constitutes a first step towards personal training assistance providing runners kinematic metrics for performance improvement and injury risk reduction.
Book title:	15th Annual International Symposium on Wearable Computers : proceedings : San Francisco, California, 12-15 June 2011
Pages:	101 - 104
ISBN:	978-1-4577-0774-2
Publication date / Date received:	2011-01-01
Publication status:	Piscataway, NJ
Publication status:	Published
Event name:	15th Annual International Symposium on Wearable Computers (ISWC 2011)
Event date:	June 12-15, 2011
Place:	San Francisco, CA, USA
Language:	English
Review status:	Peer reviewed
DBID source:	FORM-1326735847, Further edits (Source DBID), 2012-04-10: hegil
DOI:	10.1109/ISWC.2011.21

Towards Long Term Monitoring of Electrodermal Activity in Daily Life , Setz, Cornelia, Gravenhorst, Franz, Schumm, Johannes, Arnrich, Bert, Tröster, Gerhard, 2011 >>

Author(s):	Setz, Cornelia, Gravenhorst, Franz, Schumm, Johannes, Arnrich, Bert, Tröster, Gerhard
Title:	Towards Long Term Monitoring of Electrodermal Activity in Daily Life
Abstract:	Manic depression, also known as bipolar disorder, is a common and severe form of mental disorder. The European research project MONARCA aims at developing and validating mobile technologies for multi-parametric, long term monitoring of physiological and behavioral information relevant to bipolar disorder. One aspect of MONARCA is to investigate the long term monitoring of Electrodermal activity (EDA) to support the diagnosis and treatment of bipolar disorder patients. EDA is known as an indicator of the emotional state and the stress level of a person. To realize a long-term monitoring of the EDA, the integration of the sensor system in the shoe or sock is a promising approach. This paper presents a first step towards such a sensor system. In a feasibility study including 8 subjects, we investigate the correlation between EDA measurements at the fingers, which is the most established sensing site, with measurements of the EDA at the feet. The results indicate that 88% of the evoked skin conductance responses (SCRs) occur at both sensing sites. When using an action movie as psychophysiologically activating stimulus, we have found weaker reactivity in the foot than in the hand EDA. The results also suggest that the influence of moderate physical activity on EDA measurements is low and has a similar effect for both recording sites. This suggests that the foot recording location is suitable for recordings in daily life even in the presence of moderate movement.
Published in:	Personal and ubiquitous computing
ISSN:	1617-4909, 0949-2054, 1617-4917
Publication date / Date received:	2011-01-01
Publication status:	London
Publication status:	Accepted
Subjects:	Informationssysteme\|Information Systems, Electrodermal activity, EDA, Bipolar disorder, Depression, Sock
Language:	English
Review status:	Peer reviewed
Keyword:	Electrodermal activity, EDA, Bipolar disorder, Depression, Sock
DBID source:	FORM-1326725390
DOI:	10.1007/s00779-011-0463-4
Nebis system number:	004131998

Quality Appraisal of an ECG Signal Measured in an Airplane Seat , Schumm, Johannes, Arnrich, Bert, Tröster, Gerhard, 2011 >>

Author(s):	Schumm, Johannes, Arnrich, Bert, Tröster, Gerhard
Title:	Quality Appraisal of an ECG Signal Measured in an Airplane Seat
Abstract:	Nowadays, approximately 1.5 to 2 billion passengers travel with commercial airlines each year [1]. During those flights, 10 to 40 percent of all passengers in industrial countries experience a certain degree of fear of flying [2]. Thus, a significant amount of airplane passengers would benefit from assistive support during a flight. The European SEAT project aims to provide this support by detecting the passengers’ well-being. One aspect of the project is the development of unobtrusive sensor technology and algorithms for an ECG monitoring in the airplane seat. To promote acceptance and usage of the ECG monitoring, we integrated a contactless ECG system in an airplane seat. However, movements of the passenger disturb the ECG signal. To systematically analyze these disturbances, we performed a user study investigating the influence of airplane passengers’ activities on the quality of the ECG signal. The results show that the signal quality of the contactless ECG system decreases during activities such as ”eating” or ”working”. This motivates the presentation of a novel method to automatically appraise the quality of ECG signals. Our method transforms the signal appraisal into a binary classification task and is able to predict the signal quality with an accuracy of 91%.
Published in:	IEEE pervasive computing
ISSN:	1536-1268, 1558-2590
Publication date / Date received:	2011-01-01
Publication status:	New York
Publication status:	Accepted
Subjects:	Software\|Software
Language:	English
Review status:	Peer reviewed
DBID source:	FORM-1326723696
DOI:	10.1109/MPRV.2011.40
Nebis system number:	004310966

RidersGuide , Schmid, Lino, Holleczek, Thomas, Tröster, Gerhard, 2011 >>

Author(s):	Schmid, Lino, Holleczek, Thomas, Tröster, Gerhard
Title:	RidersGuide
Subtitle:	The First Real-Time Navigation System for Ski Slopes
Abstract:	Although being great fun to exercise, skiing and snowboarding entail the risk of accidents such as any other high-energy participation sport. A factor increasing the risk of accidents is foggy weather, when the view limited to a few meters and safety-critical areas such as crossings, steep areas, obstacles and the edges of the slope cannot be made out. In this paper, we present a prototype of a navigation system supporting the wayfinding of skiers and snowboarders on ski slopes. It consists of a mobile computing device with a GPS receiver and an audio and visual feedback system. In its basic functionality, the prototype recognizes when skiers and snowboarders approach safety-critical areas and generates corresponding warnings. It is moreover capable of guiding skiers and snowboarders down the slope on safe paths to minimize risk with the help of routing instructions. We evaluated our prototype system on ski slopes in Grindelwald and Savognin, Switzerland, in a user study with 20 participants. According to the study, safety warnings, which have to be perceived instantly, are recognized best through spoken audio messages. Contrariwise, video feedback outperforms natural speech regarding routing instructions.
Book title:	Eingebettete Systeme : Fachtagung des gemeinsamen Fachausschusses Echtzeitsysteme der Gesellschaft für Informatik e.V. (GI), VDI/VDE-Gesellschaft für Mess- und Automatisierungstechnik (GMA) und der Informationstechnischen Gesellschaft im VDE (ITG), Boppard, 18. und 19. November
Published in:	Informatik aktuell
Pages:	71 - 80
ISBN:	978-3-642-16188-9, 3-642-16188-X, 978-3-642-16189-6
Publication date / Date received:	2011-01-01
Publication status:	Heidelberg
Publication status:	Published
Event name:	Fachtagung des gemeinsamen Fachausschusses Echtzeitsysteme der Gesellschaft für Informatik e.V. (GI), VDI/VDE-Gesellschaft für Mess- und Automatisierungstechnik (GMA) und der Informationstechnischen Gesellschaft im VDE (ITG) 2010
Event date:	November 18-19, 2010
Place:	Boppard, Germany
Language:	English
Review status:	Peer reviewed
DBID source:	FORM-1295613104
DOI:	10.1007/978-3-642-16189-6_8
Nebis system number:	006486511

Benchmarking classification techniques using the Opportunity human activity dataset , Sagha, Hesam, Digumarti, Sundara, del R. Millán, José, Chavarriaga, Ricardo, Calatroni, Alberto, Roggen, Daniel, Tröster, Gerhard, 2011 >>

Author(s):	Sagha, Hesam, Digumarti, Sundara, del R. Millán, José, Chavarriaga, Ricardo, Calatroni, Alberto, Roggen, Daniel, Tröster, Gerhard
Title:	Benchmarking classification techniques using the Opportunity human activity dataset
Abstract:	Human activity recognition is a thriving research field. There are lots of studies in different sub-areas of activity recognition proposing different methods. However, unlike other applications, there is lack of established benchmarking problems for activity recognition. Typically, each research group tests and reports the performance of their algorithms on their own datasets using experimental setups specially conceived for that specific purpose. In this work, we introduce a versatile human activity dataset conceived to fill that void. We illustrate its use by presenting comparative results of different classification techniques, and discuss about several metrics that can be used to assess their performance. Being an initial benchmarking, we expect that the possibility to replicate and outperform the presented results will contribute to further advances in state-of-the-art methods.
Book title:	The 2011 IEEE International Conference on Systems, Man, and Cybernetics (IEEE SMC 2011)
Pages:	36 - 40
ISBN:	978-1-4577-0652-3
Publication date / Date received:	2011-01-01
Publication status:	Published
Event name:	The 2011 IEEE International Conference on Systems, Man, and Cybernetics (IEEE SMC 2011)
Event date:	Oktober 9-12, 2011
Place:	Anchorage, Alaska, USA
Language:	English
Review status:	Peer reviewed
DBID source:	FORM-1326730567
DOI:	10.1109/ICSMC.2011.6083628

Ready-To-Live , Rossi, Mirco, Cinaz, Burcu, Tröster, Gerhard, 2011 >>

Author(s):	Rossi, Mirco, Cinaz, Burcu, Tröster, Gerhard
Title:	Ready-To-Live
Subtitle:	Wearable Computing Meets Fashion
Abstract:	This paper describes the Ready-to-Live project carried out at the ETH Zurich, Electronics Laboratory in collaboration with Swiss Textile College (STF) during the 2010 spring semester. The goal of the project was to provide an interdisciplinary collaboration for technical and fashion students, and to present the final result in a real fashion show. In this paper, we show how we integrated wearable sensors into fashionable clothes in order to express different feelings and emotions. We explain first the technical implementation and then we present the design aspects of the final outfits.
Book title:	UbiComp '11 : Proceedings of the 13th international conference on Ubiquitous computing
Pages:	609 - 610
ISBN:	978-1-4503-0630-0
Publication date / Date received:	2011-01-01
Publication status:	New York, NY
Publication status:	Published
Subjects:	Fashion Show, Sensors, Smart Textiles, Wearable Computers
Event name:	13th International Conference on Ubiquitous Computing (Ubicomp 2011)
Event date:	September 17-21, 2011
Place:	Beijing, China
Language:	English
Review status:	Peer reviewed
Keyword:	Fashion Show, Sensors, Smart Textiles, Wearable Computers
DBID source:	FORM-1326733426
DOI:	10.1145/2030112.2030238

Designing and Sharing Activity-Recognition Systems Across Platforms , Roggen, Daniel, Magnenat, Stéphane, Waibel, Markus, Tröster, Gerhard, 2011 >>

Author(s):	Roggen, Daniel, Magnenat, Stéphane, Waibel, Markus, Tröster, Gerhard
Title:	Designing and Sharing Activity-Recognition Systems Across Platforms
Subtitle:	Wearable computing
Published in:	IEEE robotics & automation magazine
Volume:	18
Issue:	2
Pages:	83 - 95
ISSN:	1070-9932, 1558-223X
Publication date / Date received:	2011-01-01
Publication status:	New York
Publication status:	Published
Language:	English
Review status:	Peer reviewed
DBID source:	FORM-1326726965
DOI:	10.1109/MRA.2011.940992
Nebis system number:	000943186

Wearable computing: Designing and sharing activity recognition systems across platforms , Roggen, Daniel, Magenat, Stéphane, Waibel, Markus, Tröster, Gerhard, 2011 >>

Author(s):	Roggen, Daniel, Magenat, Stéphane, Waibel, Markus, Tröster, Gerhard
Title:	Wearable computing: Designing and sharing activity recognition systems across platforms
Published in:	IEEE Robotics and Automation Magazine
Volume:	18
Issue:	2
Pages:	83 - 95
Publication date / Date received:	2011-01-01
Language:	English
DBID source:	FORM-1327567987

The adARC pattern analysis architecture for adaptive human activity recognition systems , Roggen, Daniel, Förster, Kilian, Calatroni, Alberto, Tröster, Gerhard, 2011 >>

Author(s):	Roggen, Daniel, Förster, Kilian, Calatroni, Alberto, Tröster, Gerhard
Title:	The adARC pattern analysis architecture for adaptive human activity recognition systems
Abstract:	Most approaches to recognize human activities rely on pattern recognition techniques that are trained once at design time, and then remain unchanged during usage. This reflects the assumption that the mapping between sensor signal patterns and activity classes is known at design-time. This cannot be guaranteed in mobile and pervasive computing, where unpredictable changes can often occur in open-ended environments. Run-time adaptation can address these issues. We introduce and formalize a data processing architecture extending current approaches that allows for a wide range of realizations of adaptive activity recognition systems. The adaptive activity recognition chain (adARC) includes self-monitoring, adaptation strategies and external feedback as components of the now closed-loop recognition system. We show an adARC capable of unsupervised self-adaptation to run-time changing class distributions. It improves activity recognition accuracy when sensors suffer from on-body displacement. We show an adARC capable of adaptation to changing sensor setups. It allows for scalability by enabling a recognition systems to autonomously exploit newly introduced sensors. We discuss other adaptive recognition systems within the adARC architecture. The results outline that this architecture frames a useful solution space for the real-world deployment of adaptive activity recognition systems. It allows to present and compare recognition systems in a coherent and modular manner. We discuss the challenges and new research directions resulting from this new perspective on adaptive activity recognition.
Published in:	Journal of ambient intelligence and humanized computin
ISSN:	1868-5137, 1868-5145
Publication date / Date received:	2011-01-01
Publication status:	Berlin
Publication status:	Accepted
Language:	English
Review status:	Peer reviewed
DBID source:	FORM-1326725840
DOI:	10.1007/s12652-011-0064-0
Nebis system number:	006090610

Activity Recognition in Opportunistic Sensor Environments , Roggen, Daniel, Calatroni, Alberto, Förster, Kilian, Tröster, Gerhard, Lukowicz, Paul, Bannach, David, Ferscha, Alois, Kurz, Marc, Sagha, Hesam, Bayati, Hamidreza, Milán, José, Chavarriaga, Ricardo, 2011 >>

Author(s):	Roggen, Daniel, Calatroni, Alberto, Förster, Kilian, Tröster, Gerhard, Lukowicz, Paul, Bannach, David, Ferscha, Alois, Kurz, Marc, Sagha, Hesam, Bayati, Hamidreza, Milán, José, Chavarriaga, Ricardo
Title:	Activity Recognition in Opportunistic Sensor Environments
Abstract:	OPPORTUNITY is project under the EU FET-Open funding1 in which we develop mobile systems to recognize human activity in dynamically varying sensor setups [1] and [0010]. The system autonomously discovers available sensors around the user and self-configures to recognize desired activities. It reconfigures itself as the environment changes, and encompasses principles supporting autonomous operation in open-ended environments. OPPORTUNITY mainstreams ambient intelligence and improves user acceptance by relaxing constraints on body-worn sensor characteristics, and eases the deployment in real-world environments. We summarize key achievements of the project so far. The project outcomes are robust activity recognition systems. This may enable smarter activity-aware energy-management in buildings, and advanced activity-aware health assistants.
Book title:	Proceedings of the 2nd European Future Technologies Conference and Exhibition 2011 (FET 11)
Published in:	Procedia computer science
Volume:	7
Pages:	173 - 174
ISSN:	1877-0509
Publication date / Date received:	2011-01-01
Publication status:	Published
Subjects:	Informatik allgemein\|Computer Science, General, Activity recognition, Pervasive computing, Adaptive systems, Machine learning, Context framework
Event name:	2nd European Future Technologies Conference and Exhibition 2011 (FET 11)
Event date:	May 4-6, 2011
Place:	Budapest, Hungary
Language:	English
Review status:	Peer reviewed
Keyword:	Activity recognition, Pervasive computing, Adaptive systems, Machine learning, Context framework
DBID source:	FORM-1326727409
DOI:	10.1016/j.procs.2011.09.003
Nebis system number:	006163977

Do I look like my neighbors? , Neff, Sarah, Villalonga, Claudia, Roggen, Daniel, Tröster, Gerhard, 2011 >>

Author(s):	Neff, Sarah, Villalonga, Claudia, Roggen, Daniel, Tröster, Gerhard
Title:	Do I look like my neighbors?
Subtitle:	A Method to Detect Sensor Data Similarity for open-ended Activity Recognition Systems
Publication date / Date received:	2011-01-01
Publication status:	Published
Event name:	8th International Conference on Networked Sensing Systems (INSS'11)
Event date:	June 13-15, 2011
Place:	Penghu, Taiwan
Language:	English
Review status:	Peer reviewed
DBID source:	FORM-1326732520

A flexible InGaZnO based 1-bit SRAM under mechanical strain , Münzenrieder, Niko, Zysset, Christoph, Kinkeldei, Thomas, Cherenack, Kunigunde, Tröster, Gerhard, 2011 >>

Author(s):	Münzenrieder, Niko, Zysset, Christoph, Kinkeldei, Thomas, Cherenack, Kunigunde, Tröster, Gerhard
Title:	A flexible InGaZnO based 1-bit SRAM under mechanical strain
Abstract:	Amorphous Indium-Gallium-Zinc-Oxide (a-IGZO) is a promising material for the use in thin-film transistors (TFTs) and more complex electronic devices fabricated on flexible plastic substrates due to the low required deposition temperatures, and the high achievable electron mobilities. Here we show a mechanically flexible, fully integrated 1-bit SRAM composed of 6 a-IGZO TFTs fabricated on flexible polyimide foil that is operated with a supply voltage of 5 V, and for the first time electrically tested while bent to tensile radii of 10 mm and 5 mm. We observed circuit operation up to an input frequency of 10 kHz. The output signal of our 1-bit SRAM stays virtually unchanged even when the circuit is exposed to tensile mechanical strain of 0.52%, induced by bending it to a radius of 5 mm
Book title:	2011 Semiconductor Conference Dresden (SCD) : 27 - 28 September 2011, Dresden, Germany
ISBN:	978-1-4577-0431-4
Publication date / Date received:	2011-01-01
Publication status:	Piscataway, NJ
Publication status:	Published
Subjects:	Flexible electronics, InGaZnO, Strain, Thin film transistors
Event name:	2011 Semiconductor Conference Dresden (SCD)
Event date:	September 27-28, 2011
Place:	Dresden, Germany
Language:	English
Review status:	Peer reviewed
Keyword:	Flexible electronics, InGaZnO, Strain, Thin film transistors
DBID source:	FORM-1327335660
DOI:	10.1109/SCD.2011.6068719

Testing of flexible InGaZnO-based thin-film transistors under mechanical strain , Münzenrieder, N.S., Cherenack, K.H., Tröster, Gerhard, 2011 >>

Author(s):	Münzenrieder, N.S., Cherenack, K.H., Tröster, Gerhard
Title:	Testing of flexible InGaZnO-based thin-film transistors under mechanical strain
Abstract:	Thin-film transistors (TFTs) fabricated on flexible plastic substrates are an integral part of future flexible large-area electronic devices like displays and smart textiles. Devices for such applications require stable electrical performance under electrical stress and also during applied mechanical stress induced by bending of the flexible substrate. Mechanical stress can be tensile or compressive strain depending on whether the TFT is located outside or inside of the bending plane. Especially the impact of compressive bending on TFT performance is hard to measure, because the device is covered with the substrate in this case. We present a method which allows us to continuously measure the electrical performance parameters of amorphous Indium-Gallium-Zinc Oxide (a-IGZO) based TFTs exposed to arbitrary compressive and tensile bending radii. To measure the influence of strain on a TFT it is attached and electrically connected to a flexible carrier foil, which afterwards is fastened to two plates in our bending tester. The bending radius can be adjusted by changing the distance between these plates. Thus it is possible to apply bending radii in the range between a totally flat substrate and ≈1 mm, corresponding to a strain of ≈3.5%. The tested bottom-gate TFTs are especially designed for use with our bending tester and fabricated on 50 μm thick flexible Kapton® E polyimide substrates. To show the different application areas of our bending method we characterized our TFTs while they are bent to different tensile and compressive bending radii. These measurements show that the field effect mobilities and threshold voltages of the tested a-IGZO TFTs are nearly, but not absolutely, stable under applied strain, compared to the initial values the mobilities shift by ≈3.5% in the tensile case and ≈−1.5% in the compressive one, at a bending radius of 8 mm. We also measured the influence of repeated bending (2500 cycles over ≈70 h), where a shift of the performance parameters can be observed, too. The saturation mobility of the flat device decreases by 4.5%, and the threshold voltage raises 0.1 V. These results show that it is possible to characterize the influence of different kinds of bending on flexible thin-film devices in a very reliable way with one experimental setup.
Published in:	The European physical journal. Applied physics
Volume:	55
Issue:	2
Pages:	23904
ISSN:	1286-0042, 1286-0050
Publication date / Date received:	2011-01-01
Publication status:	Cambridge
Publication status:	Published
Language:	English
Review status:	Peer reviewed
DBID source:	FORM-1327333634
DOI:	10.1051/epjap/2011100416
Nebis system number:	001918471

Real-Time Transfer and Evaluation of Activity Recognition Capabilities in an Opportunistic System , Kurz, Marc, Hölzle, Martin, Ferscha, Alois, Calatroni, Alberto, Roggen, Daniel, Tröster, Gerhard, 2011 >>

Author(s):	Kurz, Marc, Hölzle, Martin, Ferscha, Alois, Calatroni, Alberto, Roggen, Daniel, Tröster, Gerhard
Title:	Real-Time Transfer and Evaluation of Activity Recognition Capabilities in an Opportunistic System
Abstract:	This paper describes and evaluates the challenging feature of an opportunistic activity recognition system to train a newly discovered sensor with the available sensing devices to recognize activities at runtime. The term ”opportunistic” means that the system does not operate with a fixed set of sensor devices, but uses and configures the currently available sensors that just happen to be available. Therefore, the paper presents a reference implementation of an opportunistic system, referred to as OPPORTUNITY Framework, and demonstrates the transfer of recognition capabilities from a fused multisensor ensemble to an untrained sensing device within the system in a real-world setup. Main contribution of the paper is the evaluation of the approach by describing an experimental setup and presenting results in terms of accuracy and recognition rate from the machine-learning perspective as well as from the framework and system perspective by comparing predicted classes from the teaching sensor set and the newly trained sensor to obtain QoS parameters.
Book title:	ADAPTIVE 2011 : The Third International Conference on Adaptive and Self-Adaptive Systems and Applications
Pages:	73 - 78
ISBN:	978-1-61208-156-4
Publication date / Date received:	2011-01-01
Publication status:	Rome
Publication status:	Published
Subjects:	Activity and Context Recognition, Opportunistic Sensing, Senor Networks
Event name:	Third International Conference on Adaptive and Self-Adaptive Systems and Applications (ADAPTIVE 2011)
Event date:	September 25-30, 2011
Place:	Rome, Italy
Language:	English
Review status:	Peer reviewed
Keyword:	Activity and Context Recognition, Opportunistic Sensing, Senor Networks
DBID source:	FORM-1326733868

Sensing Dance Engagement for Collaborative Music Control , Kuhn, Michael, Wirz, Martin, Flückiger, Mathias, Wattenhofer, Roger, Tröster, Gerhard, 2011 >>

Author(s):	Kuhn, Michael, Wirz, Martin, Flückiger, Mathias, Wattenhofer, Roger, Tröster, Gerhard
Title:	Sensing Dance Engagement for Collaborative Music Control
Abstract:	We introduce a concept that allows attendees of a party to collaboratively influence the music selection process. As explicit feedback is likely to disturb the atmosphere, we introduce an unobtrusive, implicit feedback mechanism. In particular, we propose to sense the partygoers' dance engagement by means of their mobile phones. Since people tend to dance more when they enjoy the music, this metric provides a measure of the crowd's satisfaction. We verify experimentally that music can be selected such that the generated song sequence matches the taste of the crowd, and we demonstrate the feasibility of inferring an individual's dance engagement using the mobile phone's accelerometer. Our experiments show that the proposed method is robust to the body location at which the phone is worn and reaches an overall accuracy of 86.8% for distinguishing dancers from non-dancers.
Book title:	15th Annual International Symposium on Wearable Computers : Proceedings : San Francisco, California, USA, 12-15 June 2011
Pages:	51 - 54
ISBN:	978-1-4577-0774-2, 978-0-7695-4438-0
Publication date / Date received:	2011-01-01
Publication status:	Los Alamitos, Calif.
Publication status:	Published
Event name:	15th Annual International Symposium on Wearable Computers (ISWC 2011)
Event date:	June 12-15, 2011
Place:	San Francisco, CA, USA
Language:	English
Review status:	Peer reviewed
DBID source:	FORM-1326734476, WOS-000299100700009
DOI:	10.1109/ISWC.2011.17

Crack prevention of highly bent metal thin films in woven electronic textiles , Kinkeldei, Thomas, Zysset, Christoph, Cherenack, Kunigunde, Woo, Noble, Tröster, Gerhard, 2011 >>

Author(s):	Kinkeldei, Thomas, Zysset, Christoph, Cherenack, Kunigunde, Woo, Noble, Tröster, Gerhard
Title:	Crack prevention of highly bent metal thin films in woven electronic textiles
Abstract:	Recent smart textile fabrication methods that are aimed at increasing the integration of electronics with textiles have involved fabricating micro-electronic components directly at the yarn level. Our approach to creating smart textiles is to fabricate thin-film devices and interconnects on plastic strips to create ‘e-fibers’ and weave them into a textile using a commercial weaving machine. e-Fibers are exposed to bending radii as small as 165 μm during weaving. If patterned interconnect lines and device layers on the surface of the e-fiber are not designed correctly, they will crack due to the high strain and lose their electronic functionality. Brittle sensor and transistor device layers may be protected locally using rigid encapsulation materials, but cracking remains an issue for long metal interconnect lines which require flexibility. We investigated two strain-control methods to prevent the thin-film interconnect lines from cracking during weaving: (1) patterning the metal interconnect lines with a geometric design to slow propagation and merging of cracks and (2) encapsulation of interconnect lines to shift the deposited films to the neutral plain of the substrate. The mechanical behavior of interconnect lines exposed to tensile bending was studied by measuring the change in interconnect resistance versus bending radii ranging from 5 mm to 50 μm. The critical bending radius, XC, defined as the radius at which the normalized interconnect resistance changes to 1.1 (indicating the onset of film rupturing) was 150 μm for standard interconnect lines. Patterned interconnect lines had a radius XC of 115 μm while encapsulated interconnect lines never reached this critical bending radius and showed a maximum resistance change of 1.02 at 100 μm. These results show that it is possible to design interconnect lines with reduced cracking behavior when exposed to high strain during commercial weaving.
Published in:	The European physical journal
Volume:	55
Issue:	2
Pages:	23901
ISSN:	1286-0042, 1286-0050
Publication date / Date received:	2011-01-01
Publication status:	Cambridge
Publication status:	Published
Language:	English
Review status:	Peer reviewed
DBID source:	FORM-1326727612
DOI:	10.1051/epjap/2011100427
Nebis system number:	001918471

A textile integrated sensor system for monitoring humidity and temperature , Kinkeldei, Thomas, Zysset, Christoph, Cherenack, Kunigunde, Tröster, Gerhard, 2011 >>

Author(s):	Kinkeldei, Thomas, Zysset, Christoph, Cherenack, Kunigunde, Tröster, Gerhard
Title:	A textile integrated sensor system for monitoring humidity and temperature
Abstract:	We report on the fabrication of a temperature and a humidity sensor for the integration into a smart textile as sensing device that monitors the room climate. For this purpose, we developed a sensor system on flexible polyimide substrates containing a gold resistance temperature sensor (RTDs) and conductive polymer (PEDOT-PSS) humidity sensor. The sensor is woven into a textile using a commercial band weaving machine. The measured resistance versus temperature shows a linear response with a temperature coefficient of 0.0028°C-1. The measured resistance versus humidity for the PEDOT sensors shows a non-linear distribution over the range from 30 to 80% RH. We successfully tested the devices in a controlled environment at 20°C and 30-5 % RH. Both sensors show their potential for environmental monitoring of the room climate as integrated sensors in textiles.
Book title:	2011 16th International Solid-State Sensors, Actuators and Microsystems Conference (TRANSDUCERS 2011) : Beijing, China, 5 - 9 June 2011
Pages:	1156 - 1159
Publication date / Date received:	2011-01-01
Publication status:	Piscataway, NJ
Publication status:	Published
Subjects:	Smart Textile, Humidity, Temperature, Sensor, Flexible Electronics
Event name:	International Conference on Solid-State Sensors, Actuators and Microsystems
Event date:	June 5-9, 2011
Place:	Beijing, China
Language:	English
Review status:	Peer reviewed
Keyword:	Smart Textile, Humidity, Temperature, Sensor, Flexible Electronics
DBID source:	FORM-1326728080

Towards Collision Avoidance on Ski Slopes , Holleczek, Thomas, Wirz, Martin, Tröster, Gerhard, 2011 >>

Author(s):	Holleczek, Thomas, Wirz, Martin, Tröster, Gerhard
Title:	Towards Collision Avoidance on Ski Slopes
Abstract:	Fun and entertainment on ski slopes come at the cost of injuries. Studies have revealed that more than ten percent of all injuries are caused by collisions of snow sport athletes and that these injuries tend to bring more severe damage to head, chest and spine (ISSS 2007). We have therefore been developing a formal model capable of describing the moves and interactions of snow sport athletes to allow for the automatic detection of areas on ski slopes with an increased risk of high traffic or collisions.
Book title:	19th International Congress on Ski Trauma and Skiing Safety: Book of Abstracts
Publication date / Date received:	2011-01-01
Publication status:	Published
Subjects:	Collision Avoidance, Model, Simulation, Dynamics of snow sports
Event name:	19th International Congress on Ski Trauma and Skiing Safety (ISSS 2011)
Event date:	May 1-7, 2011
Place:	Keystone, Colorado, USA
Language:	English
Review status:	Unknown
Keyword:	Collision Avoidance, Model, Simulation, Dynamics of snow sports
DBID source:	FORM-1326735689

Detection of Snowboarding Moves with Sensorized Bindings , Holleczek, Thomas, Harms, Holger, Tröster, Gerhard, 2011 >>

Author(s):	Holleczek, Thomas, Harms, Holger, Tröster, Gerhard
Title:	Detection of Snowboarding Moves with Sensorized Bindings
Published in:	Science and Skiing
Issue:	5
Publication date / Date received:	2011-01-01
Publication status:	Unknown
Language:	English
Review status:	Unknown
DBID source:	FORM-1295602405

Towards a Rowing Technique Evaluation Based on Oar Orientation , Gravenhorst, Franz, Tessendorf, Bernd, Tröster, Gerhard, 2011 >>

Author(s):	Gravenhorst, Franz, Tessendorf, Bernd, Tröster, Gerhard
Title:	Towards a Rowing Technique Evaluation Based on Oar Orientation
Publication date / Date received:	2011-01-01
Publication status:	Published
Event name:	International Conference on Pervasive Computing (Pervasive 2011)
Event date:	June 12-15, 2011
Place:	San Francisco, California, USA
Language:	English
Review status:	Unknown
DBID source:	FORM-1326735188

Analyzing Rowing Crews in Different Rowing Boats based on Angular Velocity Measurements with Gyroscopes , Gravenhorst, Franz, Tessendorf, Bernd, Arnrich, Bert, Codoni, Camille, Tröster, Gerhard, 2011 >>

Author(s):	Gravenhorst, Franz, Tessendorf, Bernd, Arnrich, Bert, Codoni, Camille, Tröster, Gerhard
Title:	Analyzing Rowing Crews in Different Rowing Boats based on Angular Velocity Measurements with Gyroscopes
Abstract:	The overall performance in rowing competitions depends on crew-based parameters like technique and physical strength, environmental conditions like water temperature and wind, and material like the shape and the settings of the rowing boat. The market offers a broad variety of rowing boats. However, there is still no standardized test procedure which enables an objective comparison of different rowing boats and boat settings for a given crew. In this work we are proposing three performance metrics which can be used to compare the fitness of different boats, i.e. its stability in a quantitative way. The metrics are based on angular velocity measurements which can be obtained by gyroscopes, which usually come as a part of inertial measurement units (IMUs). In collaboration with national rowing team coaches we equipped two rowing boats of world level athletes with miniaturized IMUs. Based on the collected data we benchmarked the boats in respect of their stability for the given crew.
Book title:	Proceedings of the 8th International Symposium on Computer Science in Sport (IACSS 2011) : Shanghai, Pr. China, September 21 - 24, 2011
ISBN:	978-1-8462-6087-2
Publication date / Date received:	2011-01-01
Publication status:	Shanghai
Publication status:	Published
Subjects:	Rowing, Boat orientation, Angular velocity, Gyroscope, Inertial measurement unit, IMU
Event name:	8th International Symposium on Computer Science in Sport (IACSS 2011)
Event date:	September 21-24, 2011
Place:	Shanghai, China
Language:	English
Review status:	Peer reviewed
Keyword:	Rowing, Boat orientation, Angular velocity, Gyroscope, Inertial measurement unit, IMU
DBID source:	FORM-1326729574

Smart Clothes—The Unfulfilled Pledge? , Gerhard Tröster, 2011 >>

Author(s):	Gerhard Tröster
Title:	Smart Clothes—The Unfulfilled Pledge?
Published in:	IEEE pervasive computing
Issue:	April-June
Pages:	87 - 89
Publication date / Date received:	2011-01-01
Language:	English
DBID source:	FORM-1327593693

Discriminating Individually Considerate and Authoritarian Leaders by Speech Activity Cues , Feese, Sebastian, Muaremi, Amir, Arnrich, Bert, Tröster, Gerhard, Meyer, Bertold, Jonas, Klaus, 2011 >>

Author(s):	Feese, Sebastian, Muaremi, Amir, Arnrich, Bert, Tröster, Gerhard, Meyer, Bertold, Jonas, Klaus
Title:	Discriminating Individually Considerate and Authoritarian Leaders by Speech Activity Cues
Abstract:	Effective leadership can increase team performance, however up to now the influence of specific micro-level behavioral patterns on team performance is unclear. At the same time, current behavior observation methods in social psychology mostly rely on manual video annotations that impede research. In our work, we follow a sensor-based approach to automatically extract speech activity cues to discriminate individualized considerate from authoritarian leadership. On a subset of 35 selected group discussions lead by leaders of different styles, we predict leadership style with75.5\% accuracy using logistic regression. We find that leadership style predictability is dependent on the relative discussion time and is highest for the middle parts of the discussions. Analysis of regression coefficients suggests that individually considerate leaders start speaking more often while others speak, use short utterances more often, change their speech loudness more and speak less than authoritarian leaders.
Book title:	2011 IEEE Third International Conference on Privacy, Security, Risk and Trust and 2011 IEEE Third International Conference on Social Computing (PASSAT-SocialCom 2011) : Boston, Massachusetts, USA, 9 - 11 October 2011 ; [proceedings ; including workshop papers]
Pages:	1460 - 1465
ISBN:	978-1-457-71931-8
Publication date / Date received:	2011-01-01
Publication status:	Piscataway, NJ
Publication status:	Published
Event name:	2011 IEEE Third International Conference on Privacy, Security, Risk and Trust and 2011 IEEE Third International Conference on Social Computing (PASSAT-SocialCom 2011)
Event date:	October 9-11, 2011
Place:	Boston, MA, USA
Language:	English
Review status:	Peer reviewed
DBID source:	FORM-1326732362
DOI:	10.1109/PASSAT/SocialCom.2011.209

Detecting Posture Mirroring in Social Interactions with Wearable Sensors , Feese, Sebastian, Arnrich, Bert, Tröster, Gerhard, Meyer, Bertold, Jonas, Klaus, 2011 >>

Author(s):	Feese, Sebastian, Arnrich, Bert, Tröster, Gerhard, Meyer, Bertold, Jonas, Klaus
Title:	Detecting Posture Mirroring in Social Interactions with Wearable Sensors
Abstract:	We envision wearable social-behavioral assistants which measure the nonverbal behavior of their users during social interaction. Research in psychology has linked posture mirroring, a key element of nonverbal behavior, to rapport and empathy and has been found to support communication. In this paper, we present a method to measure posture mirroring in social interaction with body-worn motion sensors. Our method is based on the detection of basic posture classes and the comparison of displayed postures across group members. We apply our method in a group discussion scenario involving 42 groups consisting of three subjects each in which group leaders express different leaderships styles. Our results show that we can measure differences in posture mirroring across groups of different leadership styles.
Published in:	Proceedings of the 15th annual IEEE International Symposium on Wearable Computers (ISWC 2011)
Pages:	119 - 120
ISBN:	978-1-4577-0774-2, 978-0-7695-4438-0
Publication date / Date received:	2011-01-01
Publication status:	Los Alamitos, CA
Publication status:	Published
Event name:	15th Annual International Symposium on Wearable Computers (ISWC 2011)
Event date:	June 12-15, 2011
Place:	San Francisco, CA, USA
Language:	English
Review status:	Peer reviewed
DBID source:	FORM-1326732173, WOS-000299100700024
DOI:	10.1109/ISWC.2011.31

Dynamic Formation of Business Networks , Eurich, Markus, Villalonga, Claudia, Boutellier, Roman, 2011 >>

Author(s):	Eurich, Markus, Villalonga, Claudia, Boutellier, Roman
Title:	Dynamic Formation of Business Networks
Subtitle:	A Framework for ‘Quality of Information’-Based Discovery of Resources
Abstract:	New business opportunities rarely conform to the way the industry traditionally approached the market, which is an opportunity for newcomers and flexible small and medium-sized enterprises to be the first in recognizing and taking advantage of emerging market opportunities. However, newcomers and small and medium-sized enterprises may be too young or too small to possess all the required competencies and resources. They need to organize themselves in business networks, in which business partners complement each other. This article suggests a sketch of the form and methods of a framework that allows the ‘Quality of Information’-based discovery of potential business partners who can offer resources like sensors, actuators, and processing services. In the Real World Internet, this would enable small and medium-sized enterprises to create an appropriate business network and to quickly react to emerging business opportunities.
Published in:	International Journal of Applied Logistics
Volume:	2
Issue:	4
Pages:	44 - 60
ISSN:	1947-9581, 1947-9573
Publication date / Date received:	2011-01-01
Publication status:	Hershey, Pa.
Publication status:	Published
Subjects:	Business Model, Business Network, Design Research, Quality of Information, Real World Internet
Language:	English
Review status:	Peer reviewed
Keyword:	Business Model, Business Network, Design Research, Quality of Information, Real World Internet
DBID source:	FORM-1326724620
DOI:	10.4018/jal.2011100104

A Wearable User Interface for Measuring Reaction Time , Cinaz, Burcu, Vogt, Christian, Arnrich, Bert, Tröster, Gerhard, 2011 >>

Author(s):	Cinaz, Burcu, Vogt, Christian, Arnrich, Bert, Tröster, Gerhard
Title:	A Wearable User Interface for Measuring Reaction Time
Publication date / Date received:	2011-01-01
Publication status:	Published
Event name:	International Conference on Ambient Intelligence 2011 (Aml 2011)
Event date:	November 16-18, 2011
Place:	Amsterdam, Netherlands
Language:	English
Review status:	Unknown
DBID source:	FORM-1326728267

Monitoring of Cognitive Functioning by Measuring Reaction Times with Wearable Devices , Cinaz, Burcu, Arnrich, Bert, Tröster, Gerhard, 2011 >>

Author(s):	Cinaz, Burcu, Arnrich, Bert, Tröster, Gerhard
Title:	Monitoring of Cognitive Functioning by Measuring Reaction Times with Wearable Devices
Abstract:	Reaction time (RT) tests are known as simple and sensitive cognitive tests. A drawback of existing RT tests is that they require the full attention of a test person which prohibits the measurement of cognitive functioning during daily routine tasks. In this contribution we present our first steps in designing and evaluating reaction time tests which can be operated throughout everyday life by means of wearable devices. In a feasibility study we induce changes in reaction times by applying cognitive load in 5 test subjects. We compare the obtained wearable reaction times with desktop-based reaction time tests. We show that relative changes in the mean duration and the variability of reaction times are similar for both desktop-based and wearable reaction time test. We conclude that wearable reaction time tests seems feasible to measure changes in reaction times and hence would allow the measurement of cognitive functioning throughout everyday life.
Book title:	5th International Conference on Pervasive Computing Technologies for Healthcare (PervasiveHealth), 2011 : 23 - 26 May 2011, Dublin, Ireland ; [including workshop papers] /
Pages:	514 - 517
ISBN:	978-1-612-84767-2
Publication date / Date received:	2011-01-01
Publication status:	Piscataway, NJ
Publication status:	Published
Subjects:	Reaction time, Response time, Wearable, Dementia, Alzheimer, Reaction time experiments
Event name:	5th International Conference on Pervasive Computing Technologies for Healthcare (PervasiveHealth) 2011
Event date:	May 23-26, 2011
Place:	Dublin, Ireland
Language:	English
Review status:	Peer reviewed
Keyword:	Reaction time, Response time, Wearable, Dementia, Alzheimer, Reaction time experiments
DBID source:	FORM-1326733028
DOI:	10.4108/icst.pervasivehealth.2011.246012

Monitoring of Mental Workload Levels during an Everyday Life Office-Work Scenario , Cinaz, Burcu, Arnrich, Bert, La Marca, Roberto, Tröster, Gerhard, 2011 >>

Author(s):	Cinaz, Burcu, Arnrich, Bert, La Marca, Roberto, Tröster, Gerhard
Title:	Monitoring of Mental Workload Levels during an Everyday Life Office-Work Scenario
Published in:	Personal and Ubiquitous Computing Journal
Publication date / Date received:	2011-01-01
Language:	English
Review status:	Accepted
DBID source:	FORM-1326725218

Collection and Curation of a Large Reference Dataset for Activity Recognition , Calatroni, Alberto, Roggen, Daniel, Tröster, Gerhard, 2011 >>

Author(s):	Calatroni, Alberto, Roggen, Daniel, Tröster, Gerhard
Title:	Collection and Curation of a Large Reference Dataset for Activity Recognition
Abstract:	The field of research on activity recognition is relatively young compared to others, like computer vision. In more mature fields, algorithms are usually tested on standardized, reference datasets. This way, algorithms coming from different groups can be tested in a fair manner, which accelerates the process of developing new knowledge. Collecting a reference dataset under realistic settings for activity recognition poses many challenges due to the large amount of sensors and sensor modalities which are needed to provide a sufficiently complete playground. We here report on some lessons learned while collecting such a reference dataset with a heterogeneous setup. We argue for the importance of a few principles to obtain a clean dataset, starting from the sampling and acquisition, down to the synchronization and labeling of the data.
Book title:	IEEE International Conference on Systems, Man, and Cybernetics (IEEE SMC 2011)
Pages:	30 - 35
ISBN:	978-1-4577-0652-3
Publication date / Date received:	2011-01-01
Publication status:	Published
Event name:	IEEE International Conference on Systems, Man, and Cybernetics (IEEE SMC 2011)
Event date:	Oktober 9-12, 2011
Place:	Anchorage, Alaska, USA
Language:	English
Review status:	Peer reviewed
DBID source:	FORM-1326731186, WOS-000298615100006
DOI:	10.1109/ICSMC.2011.6083638

Automatic Transfer of Activity Recognition Capabilities between Body-Worn Motion Sensors: Training Newcomers to Recognize Locomotion , Calatroni, Alberto, Roggen, Daniel, Tröster, Gerhard, 2011 >>

Author(s):	Calatroni, Alberto, Roggen, Daniel, Tröster, Gerhard
Title:	Automatic Transfer of Activity Recognition Capabilities between Body-Worn Motion Sensors: Training Newcomers to Recognize Locomotion
Book title:	Eighth International Conference on Networked Sensing Systems (INSS'11)
Publication date / Date received:	2011-01-01
Event date:	June 12-15
Language:	English
DBID source:	FORM-1326729808

Automatic Transfer of Activity Recognition Capabilities between Body-Worn Motion Sensors , Calatroni, Alberto, Roggen, Daniel, Tröster, Gerhard, 2011 >>

Author(s):	Calatroni, Alberto, Roggen, Daniel, Tröster, Gerhard
Title:	Automatic Transfer of Activity Recognition Capabilities between Body-Worn Motion Sensors
Subtitle:	Training Newcomers to Recognize Locomotion
Publication date / Date received:	2011-01-01
Publication status:	Published
Event name:	Eighth International Conference on Networked Sensing Systems (INSS'11)
Event date:	June 12-15, 2011
Place:	Penghu, Taiwan
Language:	English
Review status:	Unknown
DBID source:	FORM-1309957499

Experiences in Developing a Wearable Gait Assistant for Parkinson’s Disease Patients , Bächlin, Marc, Roggen, Daniel, Plotnik, Meir, Hausdorf, Jeffrey M., Tröster, Gerhard, 2011 >>

Author(s):	Bächlin, Marc, Roggen, Daniel, Plotnik, Meir, Hausdorf, Jeffrey M., Tröster, Gerhard
Title:	Experiences in Developing a Wearable Gait Assistant for Parkinson’s Disease Patients
Book title:	Healthcare sensor networks : challenges toward practical implementation
Pages:	303 - 338
ISBN:	978-1-439-82181-7, 1-439-82181-X
Publication date / Date received:	2011-01-01
Publication status:	Boca Raton
Publication status:	Published
Language:	English
Review status:	Peer reviewed
DBID source:	FORM-1327594310

What's in the Eyes for Context-Awareness? , Bulling, Andreas, Roggen, Daniel, Tröster, Gerhard, 2011 >>

Author(s):	Bulling, Andreas, Roggen, Daniel, Tröster, Gerhard
Title:	What's in the Eyes for Context-Awareness?
Abstract:	Eye movements are a rich source of information about a person's context. Analyzing the link between eye movements and cognition might even allow us to develop cognition-aware pervasive computing systems that assess a person's cognitive context.
Published in:	IEEE pervasive computing
Volume:	10
Issue:	2
Pages:	48 - 57
ISSN:	1536-1268, 1558-2590
Publication date / Date received:	2011-01-01
Publication status:	New York
Publication status:	Published
Subjects:	Software\|Software
Language:	English
Review status:	Peer reviewed
DBID source:	FORM-1326723916
DOI:	10.1109/MPRV.2010.49
Nebis system number:	004310966

Design, Implementation and Evaluation of a Multimodal Sensor System Integrated Into an Airplane Seat , Arnrich, Bert, Setz, Cornelia, Schumm, Johannes, Tröster, Gerhard, 2011 >>

Author(s):	Arnrich, Bert, Setz, Cornelia, Schumm, Johannes, Tröster, Gerhard
Title:	Design, Implementation and Evaluation of a Multimodal Sensor System Integrated Into an Airplane Seat
Book title:	Sensor Fusion: Foundation and Applications
Pages:	159 - 170
ISBN:	978-953-307-446-7
Publication date / Date received:	2011-01-01
Publication status:	Rijeka
Publication status:	Published
Language:	English
Review status:	Peer reviewed
DBID source:	FORM-1326727729

Mental health and the impact of ubiquitous technologies , Arnrich, Bert, Osmani, Venet, Bardram, Jakob., 2011 >>

Author(s):	Arnrich, Bert, Osmani, Venet, Bardram, Jakob.
Title:	Mental health and the impact of ubiquitous technologies
Abstract:	This Theme issue focuses on the emerging research of ubiquitous technologies to support mental health. So far, the majority of work presented in the field of ubiquitous healthcare has focused on supporting people affected by somatic diseases. However, increasing number of diseases affecting mental health has prompted research on technologies to support people suffering from these diseases. This Theme issue provides a number of examples of research on the potential impact of ubiquitous technologies in the field of mental health.
Published in:	Personal and ubiquitous computing
ISSN:	1617-4909, 0949-2054, 1617-4917
Publication date / Date received:	2011-01-01
Publication status:	London
Publication status:	Accepted
Subjects:	Informationssysteme\|Information Systems
Language:	English
Review status:	Peer reviewed
DBID source:	FORM-1326724905
DOI:	10.1007/s00779-011-0464-3
Nebis system number:	004131998

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