---
_id: '6066'
abstract:
- lang: eng
text: Selective visual attention improves performance in many tasks. Among others,
it leads to 'prior entry'—earlier perception of an attended compared to an unattended
stimulus. Whether this phenomenon is purely based on an increase of the processing
rate of the attended stimulus or if a decrease in the processing rate of the unattended
stimulus also contributes to the effect is, up to now, unanswered. Here we describe
a novel approach to this question based on Bundesen’s Theory of Visual Attention,
which we use to overcome the limitations of earlier prior-entry assessment with
temporal order judgments (TOJs) that only allow relative statements regarding
the processing speed of attended and unattended stimuli. Prevalent models of prior
entry in TOJs either indirectly predict a pure acceleration or cannot model the
difference between acceleration and deceleration. In a paradigm that combines
a letter-identification task with TOJs, we show that indeed acceleration of the
attended and deceler
author:
- first_name: Jan
full_name: Tünnermann, Jan
last_name: Tünnermann
- first_name: Anders
full_name: Petersen, Anders
last_name: Petersen
- first_name: Ingrid
full_name: Scharlau, Ingrid
id: '451'
last_name: Scharlau
orcid: 0000-0003-2364-9489
citation:
ama: Tünnermann J, Petersen A, Scharlau I. Does attention speed up processing? Decreases
and increases of processing rates in visual prior entry. Journal of Vision.
2015;15(3). doi:10.1167/15.3.1
apa: Tünnermann, J., Petersen, A., & Scharlau, I. (2015). Does attention speed
up processing? Decreases and increases of processing rates in visual prior entry.
Journal of Vision, 15(3). https://doi.org/10.1167/15.3.1
bibtex: '@article{Tünnermann_Petersen_Scharlau_2015, title={Does attention speed
up processing? Decreases and increases of processing rates in visual prior entry.},
volume={15}, DOI={10.1167/15.3.1},
number={3}, journal={Journal of Vision}, author={Tünnermann, Jan and Petersen,
Anders and Scharlau, Ingrid}, year={2015} }'
chicago: Tünnermann, Jan, Anders Petersen, and Ingrid Scharlau. “Does Attention
Speed up Processing? Decreases and Increases of Processing Rates in Visual Prior
Entry.” Journal of Vision 15, no. 3 (2015). https://doi.org/10.1167/15.3.1.
ieee: 'J. Tünnermann, A. Petersen, and I. Scharlau, “Does attention speed up processing?
Decreases and increases of processing rates in visual prior entry.,” Journal
of Vision, vol. 15, no. 3, 2015, doi: 10.1167/15.3.1.'
mla: Tünnermann, Jan, et al. “Does Attention Speed up Processing? Decreases and
Increases of Processing Rates in Visual Prior Entry.” Journal of Vision,
vol. 15, no. 3, 2015, doi:10.1167/15.3.1.
short: J. Tünnermann, A. Petersen, I. Scharlau, Journal of Vision 15 (2015).
date_created: 2018-12-10T07:01:56Z
date_updated: 2022-06-06T16:31:07Z
department:
- _id: '424'
doi: 10.1167/15.3.1
intvolume: ' 15'
issue: '3'
keyword:
- unattended stimuli
- attention speed
- cognitive processing
- Attention
- Humans
- Judgment
- Mental Recall
- Visual Perception
- Stimulus Parameters
- Visual Perception
- Visual Attention
- Cognitive Processes
- Velocity
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://jov.arvojournals.org/article.aspx?articleid=2213282
oa: '1'
publication: Journal of Vision
publication_identifier:
issn:
- 1534-7362
publication_status: published
status: public
title: Does attention speed up processing? Decreases and increases of processing rates
in visual prior entry.
type: journal_article
user_id: '42165'
volume: 15
year: '2015'
...
---
_id: '9876'
abstract:
- lang: eng
text: Piezoelectric inertia motors use the inertia of a body to drive it by means
of a friction contact in a series of small steps. It has been shown previously
in theoretical investigations that higher velocities and smoother movements can
be obtained if these steps do not contain phases of stiction (''stick-slip`` operation),
but use sliding friction only (''slip-slip`` operation). One very promising driving
option for such motors is the superposition of multiple sinusoidal signals or
harmonics. In this contribution, the theoretical results are validated experimentally.
In this context, a quick and reliable identification process for parameters describing
the friction contact is proposed. Additionally, the force generation potential
of inertia motors is investigated theoretically and experimentally. The experimental
results confirm the theoretical result that for a given maximum frequency, a signal
with a high fundamental frequency and consisting of two superposed sine waves
leads to the highest velocity and the smoothest motion, while the maximum motor
force is obtained with signals containing more harmonics. These results are of
fundamental importance for the further development of high-velocity piezoelectric
inertia motors.
author:
- first_name: Matthias
full_name: Hunstig, Matthias
last_name: Hunstig
- first_name: Tobias
full_name: Hemsel, Tobias
id: '210'
last_name: Hemsel
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: 'Hunstig M, Hemsel T, Sextro W. High-velocity operation of piezoelectric inertia
motors: experimental validation. Archive of Applied Mechanics. 2014:1-9.
doi:10.1007/s00419-014-0940-0'
apa: 'Hunstig, M., Hemsel, T., & Sextro, W. (2014). High-velocity operation
of piezoelectric inertia motors: experimental validation. Archive of Applied
Mechanics, 1–9. https://doi.org/10.1007/s00419-014-0940-0'
bibtex: '@article{Hunstig_Hemsel_Sextro_2014, title={High-velocity operation of
piezoelectric inertia motors: experimental validation}, DOI={10.1007/s00419-014-0940-0},
journal={Archive of Applied Mechanics}, publisher={Springer Berlin Heidelberg},
author={Hunstig, Matthias and Hemsel, Tobias and Sextro, Walter}, year={2014},
pages={1–9} }'
chicago: 'Hunstig, Matthias, Tobias Hemsel, and Walter Sextro. “High-Velocity Operation
of Piezoelectric Inertia Motors: Experimental Validation.” Archive of Applied
Mechanics, 2014, 1–9. https://doi.org/10.1007/s00419-014-0940-0.'
ieee: 'M. Hunstig, T. Hemsel, and W. Sextro, “High-velocity operation of piezoelectric
inertia motors: experimental validation,” Archive of Applied Mechanics,
pp. 1–9, 2014.'
mla: 'Hunstig, Matthias, et al. “High-Velocity Operation of Piezoelectric Inertia
Motors: Experimental Validation.” Archive of Applied Mechanics, Springer
Berlin Heidelberg, 2014, pp. 1–9, doi:10.1007/s00419-014-0940-0.'
short: M. Hunstig, T. Hemsel, W. Sextro, Archive of Applied Mechanics (2014) 1–9.
date_created: 2019-05-20T13:08:08Z
date_updated: 2019-05-20T13:08:43Z
department:
- _id: '151'
doi: 10.1007/s00419-014-0940-0
keyword:
- Inertia motor
- High velocity
- Stick-slip motor
- Slip-slip operation
- Friction parameter identification
language:
- iso: eng
page: 1-9
publication: Archive of Applied Mechanics
publication_identifier:
issn:
- 0939-1533
publisher: Springer Berlin Heidelberg
status: public
title: 'High-velocity operation of piezoelectric inertia motors: experimental validation'
type: journal_article
user_id: '55222'
year: '2014'
...
---
_id: '9802'
abstract:
- lang: eng
text: It has been shown previously that ``slip-slip'' operation of piezoelectric
inertia motors allows higher velocities and smoother movements than classic ``stick-slip''
operation. One very promising driving option is to use a superposition of multiple
sinusoidal signals. In this contribution, previous theoretical results are validated
experimentally. The results confirm the theoretical result that for a given maximum
frequency, usually defined by the actuator characteristics, a signal with high
fundamental frequency and consisting of two superposed sine waves leads to the
highest velocity and the smoothest motion. This result is of fundamental importance
for the further development of high-velocity piezoelectric inertia motors.
author:
- first_name: Matthias
full_name: Hunstig, Matthias
last_name: Hunstig
- first_name: Tobias
full_name: Hemsel, Tobias
id: '210'
last_name: Hemsel
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: 'Hunstig M, Hemsel T, Sextro W. High-Velocity Slip-Slip Operation of Piezoelectric
Inertia Motors - Experimental Validation. In: Proceedings of 10th International
Workshop on Piezoelectric Materials and Applications and 8th Energy Harvesting
Workshop. Hannover, Germany; 2013:16-18.'
apa: Hunstig, M., Hemsel, T., & Sextro, W. (2013). High-Velocity Slip-Slip Operation
of Piezoelectric Inertia Motors - Experimental Validation. In Proceedings of
10th International Workshop on Piezoelectric Materials and Applications and 8th
Energy Harvesting Workshop (pp. 16–18). Hannover, Germany.
bibtex: '@inproceedings{Hunstig_Hemsel_Sextro_2013, place={Hannover, Germany}, title={High-Velocity
Slip-Slip Operation of Piezoelectric Inertia Motors - Experimental Validation},
booktitle={Proceedings of 10th International Workshop on Piezoelectric Materials
and Applications and 8th Energy Harvesting Workshop}, author={Hunstig, Matthias
and Hemsel, Tobias and Sextro, Walter}, year={2013}, pages={16–18} }'
chicago: Hunstig, Matthias, Tobias Hemsel, and Walter Sextro. “High-Velocity Slip-Slip
Operation of Piezoelectric Inertia Motors - Experimental Validation.” In Proceedings
of 10th International Workshop on Piezoelectric Materials and Applications and
8th Energy Harvesting Workshop, 16–18. Hannover, Germany, 2013.
ieee: M. Hunstig, T. Hemsel, and W. Sextro, “High-Velocity Slip-Slip Operation of
Piezoelectric Inertia Motors - Experimental Validation,” in Proceedings of
10th International Workshop on Piezoelectric Materials and Applications and 8th
Energy Harvesting Workshop, 2013, pp. 16–18.
mla: Hunstig, Matthias, et al. “High-Velocity Slip-Slip Operation of Piezoelectric
Inertia Motors - Experimental Validation.” Proceedings of 10th International
Workshop on Piezoelectric Materials and Applications and 8th Energy Harvesting
Workshop, 2013, pp. 16–18.
short: 'M. Hunstig, T. Hemsel, W. Sextro, in: Proceedings of 10th International
Workshop on Piezoelectric Materials and Applications and 8th Energy Harvesting
Workshop, Hannover, Germany, 2013, pp. 16–18.'
date_created: 2019-05-13T14:06:14Z
date_updated: 2022-01-06T07:04:21Z
department:
- _id: '151'
keyword:
- Piezoelectric inertia motor
- stick-slip motor
- driving signal
- velocity
- smoothness
language:
- iso: eng
page: 16-18
place: Hannover, Germany
publication: Proceedings of 10th International Workshop on Piezoelectric Materials
and Applications and 8th Energy Harvesting Workshop
status: public
title: High-Velocity Slip-Slip Operation of Piezoelectric Inertia Motors - Experimental
Validation
type: conference
user_id: '55222'
year: '2013'
...
---
_id: '9805'
abstract:
- lang: eng
text: 'Piezoelectric inertia motors, also known as ``stick--slip drives'''', use
the inertia of a body to drive it in small steps by means of a friction contact.
While these steps are classically assumed to involve stiction and sliding, the
motors can also operate in ``slip--slip'''' mode without any phase of static friction.
This contribution provides a systematic investigation and performance comparison
of different stick--slip and slip--slip modes of operation. Different criteria
for comparing the motional performance of inertia motors are defined: Steady state
velocity, smoothness of motion, and start-up time. Using the example of a translational
inertia motor excited by an ideal displacement signal, it is found that the maximum
velocity reachable in stick--slip operation is limited principally, while continuous
slip--slip operation allows very high velocities. For the investigated driving
signals, the motor velocity is proportional to the square root of the actuator
stroke. The motor performance with these ideal signals defines an upper boundary
for the performance of real motors.'
author:
- first_name: Matthias
full_name: Hunstig, Matthias
last_name: Hunstig
- first_name: Tobias
full_name: Hemsel, Tobias
id: '210'
last_name: Hemsel
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: 'Hunstig M, Hemsel T, Sextro W. Stick-slip and slip-slip operation of piezoelectric
inertia drives - Part I: Ideal Excitation. Sensors and Actuators A: Physical.
2013;200:90-100. doi:10.1016/j.sna.2012.11.012'
apa: 'Hunstig, M., Hemsel, T., & Sextro, W. (2013). Stick-slip and slip-slip
operation of piezoelectric inertia drives - Part I: Ideal Excitation. Sensors
and Actuators A: Physical, 200, 90–100. https://doi.org/10.1016/j.sna.2012.11.012'
bibtex: '@article{Hunstig_Hemsel_Sextro_2013, title={Stick-slip and slip-slip operation
of piezoelectric inertia drives - Part I: Ideal Excitation.}, volume={200}, DOI={10.1016/j.sna.2012.11.012},
journal={Sensors and Actuators A: Physical}, author={Hunstig, Matthias and Hemsel,
Tobias and Sextro, Walter}, year={2013}, pages={90–100} }'
chicago: 'Hunstig, Matthias, Tobias Hemsel, and Walter Sextro. “Stick-Slip and Slip-Slip
Operation of Piezoelectric Inertia Drives - Part I: Ideal Excitation.” Sensors
and Actuators A: Physical 200 (2013): 90–100. https://doi.org/10.1016/j.sna.2012.11.012.'
ieee: 'M. Hunstig, T. Hemsel, and W. Sextro, “Stick-slip and slip-slip operation
of piezoelectric inertia drives - Part I: Ideal Excitation.,” Sensors and Actuators
A: Physical, vol. 200, pp. 90–100, 2013.'
mla: 'Hunstig, Matthias, et al. “Stick-Slip and Slip-Slip Operation of Piezoelectric
Inertia Drives - Part I: Ideal Excitation.” Sensors and Actuators A: Physical,
vol. 200, 2013, pp. 90–100, doi:10.1016/j.sna.2012.11.012.'
short: 'M. Hunstig, T. Hemsel, W. Sextro, Sensors and Actuators A: Physical 200
(2013) 90–100.'
date_created: 2019-05-13T14:10:34Z
date_updated: 2022-01-06T07:04:21Z
department:
- _id: '151'
doi: 10.1016/j.sna.2012.11.012
intvolume: ' 200'
keyword:
- Inertia motor
- Stick--slip drive
- Mode of operation
- Performance indicator
- Velocity maximization
- Actuator stroke
language:
- iso: eng
page: 90 - 100
publication: 'Sensors and Actuators A: Physical'
quality_controlled: '1'
status: public
title: 'Stick-slip and slip-slip operation of piezoelectric inertia drives - Part
I: Ideal Excitation.'
type: journal_article
user_id: '55222'
volume: 200
year: '2013'
...
---
_id: '11881'
abstract:
- lang: eng
text: A combination of GPS (global positioning system) and INS (inertial navigation
system) is known to provide high precision and highly robust vehicle localization.
Notably during times when the GPS signal has a poor quality, e.g. due to the lack
of a sufficiently large number of visible satellites, the INS, which may consist
of a gyroscope and an odometer, will lead to improved positioning accuracy. In
this paper we show how velocity information obtained from GSM (global system for
mobile communications) signalling, rather than from a tachometer, can be used
together with a gyroscope sensor to support localization in the presence of temporarily
unavailable GPS data. We propose a sensor fusion system architecture and present
simulation results that show the effectiveness of this approach.
author:
- first_name: Sven
full_name: Peschke, Sven
last_name: Peschke
- first_name: Maik
full_name: Bevermeier, Maik
last_name: Bevermeier
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: 'Peschke S, Bevermeier M, Haeb-Umbach R. A GPS positioning approach exploiting
GSM velocity estimates. In: 6th Workshop on Positioning Navigation and Communication
(WPNC 2009). ; 2009:195-202. doi:10.1109/WPNC.2009.4907827'
apa: Peschke, S., Bevermeier, M., & Haeb-Umbach, R. (2009). A GPS positioning
approach exploiting GSM velocity estimates. In 6th Workshop on Positioning
Navigation and Communication (WPNC 2009) (pp. 195–202). https://doi.org/10.1109/WPNC.2009.4907827
bibtex: '@inproceedings{Peschke_Bevermeier_Haeb-Umbach_2009, title={A GPS positioning
approach exploiting GSM velocity estimates}, DOI={10.1109/WPNC.2009.4907827},
booktitle={6th Workshop on Positioning Navigation and Communication (WPNC 2009)},
author={Peschke, Sven and Bevermeier, Maik and Haeb-Umbach, Reinhold}, year={2009},
pages={195–202} }'
chicago: Peschke, Sven, Maik Bevermeier, and Reinhold Haeb-Umbach. “A GPS Positioning
Approach Exploiting GSM Velocity Estimates.” In 6th Workshop on Positioning
Navigation and Communication (WPNC 2009), 195–202, 2009. https://doi.org/10.1109/WPNC.2009.4907827.
ieee: S. Peschke, M. Bevermeier, and R. Haeb-Umbach, “A GPS positioning approach
exploiting GSM velocity estimates,” in 6th Workshop on Positioning Navigation
and Communication (WPNC 2009), 2009, pp. 195–202.
mla: Peschke, Sven, et al. “A GPS Positioning Approach Exploiting GSM Velocity Estimates.”
6th Workshop on Positioning Navigation and Communication (WPNC 2009), 2009,
pp. 195–202, doi:10.1109/WPNC.2009.4907827.
short: 'S. Peschke, M. Bevermeier, R. Haeb-Umbach, in: 6th Workshop on Positioning
Navigation and Communication (WPNC 2009), 2009, pp. 195–202.'
date_created: 2019-07-12T05:30:04Z
date_updated: 2022-01-06T06:51:11Z
department:
- _id: '54'
doi: 10.1109/WPNC.2009.4907827
keyword:
- cellular radio
- distance measurement
- global positioning system
- Global Positioning System
- global system for mobile communications
- GPS positioning approach
- GSM velocity
- gyroscopes
- gyroscope sensor
- inertial navigation
- inertial navigation system
- odometer
- sensor fusion system architecture
- sensors
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2009/PeBeHa09-1.pdf
oa: '1'
page: 195-202
publication: 6th Workshop on Positioning Navigation and Communication (WPNC 2009)
status: public
title: A GPS positioning approach exploiting GSM velocity estimates
type: conference
user_id: '44006'
year: '2009'
...
---
_id: '17272'
abstract:
- lang: eng
text: In developmental research, tutoring behavior has been identified as scaffolding
infants' learning processes. It has been defined in terms of child-directed speech
(Motherese), child-directed motion (Motionese), and contingency. In the field
of developmental robotics, research often assumes that in human-robot interaction
(HRI), robots are treated similar to infants, because their immature cognitive
capabilities benefit from this behavior. However, according to our knowledge,
it has barely been studied whether this is true and how exactly humans alter their
behavior towards a robotic interaction partner. In this paper, we present results
concerning the acceptance of a robotic agent in a social learning scenario obtained
via comparison to adults and 8-11 months old infants in equal conditions. These
results constitute an important empirical basis for making use of tutoring behavior
in social robotics. In our study, we performed a detailed multimodal analysis
of HRI in a tutoring situation using the example of a robot simulation equipped
with a bottom-up saliency-based attention model. Our results reveal significant
differences in hand movement velocity, motion pauses, range of motion, and eye
gaze suggesting that for example adults decrease their hand movement velocity
in an Adult-Child Interaction (ACI), opposed to an Adult-Adult Interaction (AAI)
and this decrease is even higher in the Adult-Robot Interaction (ARI). We also
found important differences between ACI and ARI in how the behavior is modified
over time as the interaction unfolds. These findings indicate the necessity of
integrating top-down feedback structures into a bottom-up system for robots to
be fully accepted as interaction partners.
author:
- first_name: Anna-Lisa
full_name: Vollmer, Anna-Lisa
last_name: Vollmer
- first_name: Katrin Solveig
full_name: Lohan, Katrin Solveig
last_name: Lohan
- first_name: Kerstin
full_name: Fischer, Kerstin
last_name: Fischer
- first_name: Yukie
full_name: Nagai, Yukie
last_name: Nagai
- first_name: Karola
full_name: Pitsch, Karola
last_name: Pitsch
- first_name: Jannik
full_name: Fritsch, Jannik
last_name: Fritsch
- first_name: Katharina
full_name: Rohlfing, Katharina
id: '50352'
last_name: Rohlfing
- first_name: Britta
full_name: Wrede, Britta
last_name: Wrede
citation:
ama: 'Vollmer A-L, Lohan KS, Fischer K, et al. People modify their tutoring behavior
in robot-directed interaction for action learning. In: Development and Learning,
2009. ICDL 2009. IEEE 8th International Conference on Development and Learning.
IEEE; 2009:1-6. doi:10.1109/DEVLRN.2009.5175516'
apa: Vollmer, A.-L., Lohan, K. S., Fischer, K., Nagai, Y., Pitsch, K., Fritsch,
J., Rohlfing, K., & Wrede, B. (2009). People modify their tutoring behavior
in robot-directed interaction for action learning. Development and Learning,
2009. ICDL 2009. IEEE 8th International Conference on Development and Learning,
1–6. https://doi.org/10.1109/DEVLRN.2009.5175516
bibtex: '@inproceedings{Vollmer_Lohan_Fischer_Nagai_Pitsch_Fritsch_Rohlfing_Wrede_2009,
title={People modify their tutoring behavior in robot-directed interaction for
action learning}, DOI={10.1109/DEVLRN.2009.5175516},
booktitle={Development and Learning, 2009. ICDL 2009. IEEE 8th International Conference
on Development and Learning}, publisher={IEEE}, author={Vollmer, Anna-Lisa and
Lohan, Katrin Solveig and Fischer, Kerstin and Nagai, Yukie and Pitsch, Karola
and Fritsch, Jannik and Rohlfing, Katharina and Wrede, Britta}, year={2009}, pages={1–6}
}'
chicago: Vollmer, Anna-Lisa, Katrin Solveig Lohan, Kerstin Fischer, Yukie Nagai,
Karola Pitsch, Jannik Fritsch, Katharina Rohlfing, and Britta Wrede. “People Modify
Their Tutoring Behavior in Robot-Directed Interaction for Action Learning.” In
Development and Learning, 2009. ICDL 2009. IEEE 8th International Conference
on Development and Learning, 1–6. IEEE, 2009. https://doi.org/10.1109/DEVLRN.2009.5175516.
ieee: 'A.-L. Vollmer et al., “People modify their tutoring behavior in robot-directed
interaction for action learning,” in Development and Learning, 2009. ICDL 2009.
IEEE 8th International Conference on Development and Learning, 2009, pp. 1–6,
doi: 10.1109/DEVLRN.2009.5175516.'
mla: Vollmer, Anna-Lisa, et al. “People Modify Their Tutoring Behavior in Robot-Directed
Interaction for Action Learning.” Development and Learning, 2009. ICDL 2009.
IEEE 8th International Conference on Development and Learning, IEEE, 2009,
pp. 1–6, doi:10.1109/DEVLRN.2009.5175516.
short: 'A.-L. Vollmer, K.S. Lohan, K. Fischer, Y. Nagai, K. Pitsch, J. Fritsch,
K. Rohlfing, B. Wrede, in: Development and Learning, 2009. ICDL 2009. IEEE 8th
International Conference on Development and Learning, IEEE, 2009, pp. 1–6.'
date_created: 2020-06-24T13:02:43Z
date_updated: 2023-02-01T13:06:43Z
department:
- _id: '749'
doi: 10.1109/DEVLRN.2009.5175516
keyword:
- robot simulation
- hand movement velocity
- robotic interaction partner
- robotic agent
- robot-directed interaction
- multimodal analysis
- Motionese
- Motherese
- intelligent tutoring systems
- immature cognitive capability
- human computer interaction
- eye gaze
- child-directed speech
- child-directed motion
- bottom-up system
- bottom-up saliency-based attention model
- adult-robot interaction
- adult-child interaction
- adult-adult interaction
- human-robot interaction
- action learning
- social learning scenario
- social robotics
- software agents
- top-down feedback structures
- tutoring behavior
language:
- iso: eng
page: 1-6
publication: Development and Learning, 2009. ICDL 2009. IEEE 8th International Conference
on Development and Learning
publisher: IEEE
status: public
title: People modify their tutoring behavior in robot-directed interaction for action
learning
type: conference
user_id: '14931'
year: '2009'
...
---
_id: '11883'
abstract:
- lang: eng
text: In this paper, we experimentally evaluate algorithms for velocity estimation
of a GSM 900 mobile terminal which are based on the analysis of the statistical
properties of the fast fading process. It is shown how theses statistics can be
obtained from the training sequences present in downlink transmission bursts without
establishing an active connection. Realistic simulations of a GSM channel according
to the COST 207 channel models have been conducted. These models incorporate effects
like multipath propagation, fading, cochannel interference and additive noise.
It is shown that velocity estimation by searching for the maximum slope of the
power density spectrum of the fast fading performs best.
author:
- first_name: Sven
full_name: Peschke, Sven
last_name: Peschke
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: 'Peschke S, Haeb-Umbach R. Velocity Estimation of Mobile Terminals by Exploiting
GSM Downlink Signalling. In: 4th Workshop on Positioning Navigation and Communication
(WPNC 2007). ; 2007:217-222. doi:10.1109/WPNC.2007.353637'
apa: Peschke, S., & Haeb-Umbach, R. (2007). Velocity Estimation of Mobile Terminals
by Exploiting GSM Downlink Signalling. In 4th Workshop on Positioning Navigation
and Communication (WPNC 2007) (pp. 217–222). https://doi.org/10.1109/WPNC.2007.353637
bibtex: '@inproceedings{Peschke_Haeb-Umbach_2007, title={Velocity Estimation of
Mobile Terminals by Exploiting GSM Downlink Signalling}, DOI={10.1109/WPNC.2007.353637},
booktitle={4th Workshop on Positioning Navigation and Communication (WPNC 2007)},
author={Peschke, Sven and Haeb-Umbach, Reinhold}, year={2007}, pages={217–222}
}'
chicago: Peschke, Sven, and Reinhold Haeb-Umbach. “Velocity Estimation of Mobile
Terminals by Exploiting GSM Downlink Signalling.” In 4th Workshop on Positioning
Navigation and Communication (WPNC 2007), 217–22, 2007. https://doi.org/10.1109/WPNC.2007.353637.
ieee: S. Peschke and R. Haeb-Umbach, “Velocity Estimation of Mobile Terminals by
Exploiting GSM Downlink Signalling,” in 4th Workshop on Positioning Navigation
and Communication (WPNC 2007), 2007, pp. 217–222.
mla: Peschke, Sven, and Reinhold Haeb-Umbach. “Velocity Estimation of Mobile Terminals
by Exploiting GSM Downlink Signalling.” 4th Workshop on Positioning Navigation
and Communication (WPNC 2007), 2007, pp. 217–22, doi:10.1109/WPNC.2007.353637.
short: 'S. Peschke, R. Haeb-Umbach, in: 4th Workshop on Positioning Navigation and
Communication (WPNC 2007), 2007, pp. 217–222.'
date_created: 2019-07-12T05:30:06Z
date_updated: 2022-01-06T06:51:11Z
department:
- _id: '54'
doi: 10.1109/WPNC.2007.353637
keyword:
- additive noise
- cellular radio
- channel estimation
- cochannel interference
- COST 207 channel models
- downlink transmission bursts
- fading channels
- fading process
- GSM downlink signalling
- mobile terminals
- multipath channels
- multipath propagation
- power density spectrum
- statistical analysis
- statistical properties
- telecommunication links
- telecommunication terminals
- velocity estimation
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2007/PeHa07.pdf
oa: '1'
page: 217-222
publication: 4th Workshop on Positioning Navigation and Communication (WPNC 2007)
status: public
title: Velocity Estimation of Mobile Terminals by Exploiting GSM Downlink Signalling
type: conference
user_id: '44006'
year: '2007'
...
---
_id: '8915'
abstract:
- lang: eng
text: Ultrasonic linear motors have now been investigated for several years. Their
key features are high thrust forces related to their volume and good position-accuracy.
This contribution consists of two main parts. In the first part we describe the
state-of-the-art of linear piezoelectric motors. Characteristics like no-load
velocity, maximum thrust force and other technical properties of commercially
available devices will be reported as well as those of prototypes. In the second
part we report an ongoing research and development project aiming at a linear
piezoelectric motor, which is capable of surpassing some of the shortcomings of
other piezoelectric motors
author:
- first_name: Tobias
full_name: Hemsel, Tobias
id: '210'
last_name: Hemsel
- first_name: Jörg
full_name: Wallaschek, Jörg
last_name: Wallaschek
citation:
ama: 'Hemsel T, Wallaschek J. State of the art and development trends of ultrasonic
linear motors. In: Ultrasonics Symposium, 2000 IEEE. Vol 1. ; 2000:663-666
vol.1. doi:10.1109/ULTSYM.2000.922635'
apa: Hemsel, T., & Wallaschek, J. (2000). State of the art and development trends
of ultrasonic linear motors. In Ultrasonics Symposium, 2000 IEEE (Vol.
1, pp. 663–666 vol.1). https://doi.org/10.1109/ULTSYM.2000.922635
bibtex: '@inproceedings{Hemsel_Wallaschek_2000, title={State of the art and development
trends of ultrasonic linear motors}, volume={1}, DOI={10.1109/ULTSYM.2000.922635},
booktitle={Ultrasonics Symposium, 2000 IEEE}, author={Hemsel, Tobias and Wallaschek,
Jörg}, year={2000}, pages={663–666 vol.1} }'
chicago: Hemsel, Tobias, and Jörg Wallaschek. “State of the Art and Development
Trends of Ultrasonic Linear Motors.” In Ultrasonics Symposium, 2000 IEEE,
1:663–66 vol.1, 2000. https://doi.org/10.1109/ULTSYM.2000.922635.
ieee: T. Hemsel and J. Wallaschek, “State of the art and development trends of ultrasonic
linear motors,” in Ultrasonics Symposium, 2000 IEEE, 2000, vol. 1, pp.
663–666 vol.1.
mla: Hemsel, Tobias, and Jörg Wallaschek. “State of the Art and Development Trends
of Ultrasonic Linear Motors.” Ultrasonics Symposium, 2000 IEEE, vol. 1,
2000, pp. 663–66 vol.1, doi:10.1109/ULTSYM.2000.922635.
short: 'T. Hemsel, J. Wallaschek, in: Ultrasonics Symposium, 2000 IEEE, 2000, pp.
663–666 vol.1.'
date_created: 2019-04-15T09:52:09Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
doi: 10.1109/ULTSYM.2000.922635
intvolume: ' 1'
keyword:
- linear motors
- ultrasonic motors
- linear piezoelectric motor
- maximum thrust force
- no-load velocity
- ultrasonic linear motor
- Electromagnetic devices
- Electromagnetic fields
- Frequency
- Friction
- Gears
- Materials science and technology
- Piezoelectric materials
- Research and development
- Vibrations
- Wheels
language:
- iso: eng
page: 663-666 vol.1
publication: Ultrasonics Symposium, 2000 IEEE
publication_identifier:
issn:
- 1051-0117
quality_controlled: '1'
status: public
title: State of the art and development trends of ultrasonic linear motors
type: conference
user_id: '55222'
volume: 1
year: '2000'
...