---
_id: '9576'
abstract:
- lang: eng
text: 'In neurosurgery, delineation of tumor boundaries during resection of brain
tumors is of substantial relevance. During operation distinction between tumor
and healthy tissue rely on the abilities of the surgeon based on visual and tactile
differentiation. In this paper a high sensitivity actuator-sensor system using
a piezoelectric bimorph is presented. Frequency shift and transfer function of
the bimorphpsilas voltages are detected and evaluated. Sensorpsilas sensitivity
is evaluated using two frequency controls strategies: A phase-locked loop (PLL)
and a self-oscillating circuit. Results of measurements conducted on gel-phantoms
are presented and discussed.'
author:
- first_name: David Oliva
full_name: Uribe, David Oliva
last_name: Uribe
- first_name: Ralf
full_name: Stroop, Ralf
last_name: Stroop
- first_name: Tobias
full_name: Hemsel, Tobias
id: '210'
last_name: Hemsel
- first_name: Jörg
full_name: Wallaschek, Jörg
last_name: Wallaschek
citation:
ama: 'Uribe DO, Stroop R, Hemsel T, Wallaschek J. Development of a biomedical tissue
differentiation system using piezoelectric actuators. In: Frequency Control
Symposium, 2008 IEEE International. ; 2008:91-94. doi:10.1109/FREQ.2008.4622963'
apa: Uribe, D. O., Stroop, R., Hemsel, T., & Wallaschek, J. (2008). Development
of a biomedical tissue differentiation system using piezoelectric actuators. In
Frequency Control Symposium, 2008 IEEE International (pp. 91–94). https://doi.org/10.1109/FREQ.2008.4622963
bibtex: '@inproceedings{Uribe_Stroop_Hemsel_Wallaschek_2008, title={Development
of a biomedical tissue differentiation system using piezoelectric actuators},
DOI={10.1109/FREQ.2008.4622963},
booktitle={Frequency Control Symposium, 2008 IEEE International}, author={Uribe,
David Oliva and Stroop, Ralf and Hemsel, Tobias and Wallaschek, Jörg}, year={2008},
pages={91–94} }'
chicago: Uribe, David Oliva, Ralf Stroop, Tobias Hemsel, and Jörg Wallaschek. “Development
of a Biomedical Tissue Differentiation System Using Piezoelectric Actuators.”
In Frequency Control Symposium, 2008 IEEE International, 91–94, 2008. https://doi.org/10.1109/FREQ.2008.4622963.
ieee: D. O. Uribe, R. Stroop, T. Hemsel, and J. Wallaschek, “Development of a biomedical
tissue differentiation system using piezoelectric actuators,” in Frequency
Control Symposium, 2008 IEEE International, 2008, pp. 91–94.
mla: Uribe, David Oliva, et al. “Development of a Biomedical Tissue Differentiation
System Using Piezoelectric Actuators.” Frequency Control Symposium, 2008 IEEE
International, 2008, pp. 91–94, doi:10.1109/FREQ.2008.4622963.
short: 'D.O. Uribe, R. Stroop, T. Hemsel, J. Wallaschek, in: Frequency Control Symposium,
2008 IEEE International, 2008, pp. 91–94.'
date_created: 2019-04-29T13:07:39Z
date_updated: 2022-01-06T07:04:16Z
department:
- _id: '151'
doi: 10.1109/FREQ.2008.4622963
keyword:
- biomedical measurement
- brain
- cancer
- neurophysiology
- phantoms
- phase locked loops
- piezoelectric actuators
- surgery
- tactile sensors
- transfer functions
- tumours
- PLL
- biomedical tissue differentiation system
- brain tumor resection
- frequency control
- frequency shift
- gel-phantom
- high sensitivity actuator-sensor system
- neurosurgery
- phase-locked loop
- piezoelectric actuators
- piezoelectric bimorph
- self-oscillating circuit
- sensor sensitivity
- tactile differentiation
- tactile sensor system
- transfer function
- tumor boundary
- visual differentiation
- Biomedical measurements
- Circuits
- Frequency control
- Neoplasms
- Neurosurgery
- Phase locked loops
- Piezoelectric actuators
- Surges
- Transfer functions
- Voltage
language:
- iso: eng
page: 91-94
publication: Frequency Control Symposium, 2008 IEEE International
publication_identifier:
issn:
- 1075-6787
quality_controlled: '1'
status: public
title: Development of a biomedical tissue differentiation system using piezoelectric
actuators
type: conference
user_id: '55222'
year: '2008'
...
---
_id: '11927'
abstract:
- lang: eng
text: Maximizing the output signal-to-noise ratio (SNR) of a sensor array in the
presence of spatially colored noise leads to a generalized eigenvalue problem.
While this approach has extensively been employed in narrowband (antenna) array
beamforming, it is typically not used for broadband (microphone) array beamforming
due to the uncontrolled amount of speech distortion introduced by a narrowband
SNR criterion. In this paper, we show how the distortion of the desired signal
can be controlled by a single-channel post-filter, resulting in a performance
comparable to the generalized minimum variance distortionless response beamformer,
where arbitrary transfer functions relate the source and the microphones. Results
are given both for directional and diffuse noise. A novel gradient ascent adaptation
algorithm is presented, and its good convergence properties are experimentally
revealed by comparison with alternatives from the literature. A key feature of
the proposed beamformer is that it operates blindly, i.e., it neither requires
knowledge about the array geometry nor an explicit estimation of the transfer
functions from source to sensors or the direction-of-arrival.
author:
- first_name: Ernst
full_name: Warsitz, Ernst
last_name: Warsitz
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: Warsitz E, Haeb-Umbach R. Blind Acoustic Beamforming Based on Generalized Eigenvalue
Decomposition. IEEE Transactions on Audio, Speech, and Language Processing.
2007;15(5):1529-1539. doi:10.1109/TASL.2007.898454
apa: Warsitz, E., & Haeb-Umbach, R. (2007). Blind Acoustic Beamforming Based
on Generalized Eigenvalue Decomposition. IEEE Transactions on Audio, Speech,
and Language Processing, 15(5), 1529–1539. https://doi.org/10.1109/TASL.2007.898454
bibtex: '@article{Warsitz_Haeb-Umbach_2007, title={Blind Acoustic Beamforming Based
on Generalized Eigenvalue Decomposition}, volume={15}, DOI={10.1109/TASL.2007.898454},
number={5}, journal={IEEE Transactions on Audio, Speech, and Language Processing},
author={Warsitz, Ernst and Haeb-Umbach, Reinhold}, year={2007}, pages={1529–1539}
}'
chicago: 'Warsitz, Ernst, and Reinhold Haeb-Umbach. “Blind Acoustic Beamforming
Based on Generalized Eigenvalue Decomposition.” IEEE Transactions on Audio,
Speech, and Language Processing 15, no. 5 (2007): 1529–39. https://doi.org/10.1109/TASL.2007.898454.'
ieee: E. Warsitz and R. Haeb-Umbach, “Blind Acoustic Beamforming Based on Generalized
Eigenvalue Decomposition,” IEEE Transactions on Audio, Speech, and Language
Processing, vol. 15, no. 5, pp. 1529–1539, 2007.
mla: Warsitz, Ernst, and Reinhold Haeb-Umbach. “Blind Acoustic Beamforming Based
on Generalized Eigenvalue Decomposition.” IEEE Transactions on Audio, Speech,
and Language Processing, vol. 15, no. 5, 2007, pp. 1529–39, doi:10.1109/TASL.2007.898454.
short: E. Warsitz, R. Haeb-Umbach, IEEE Transactions on Audio, Speech, and Language
Processing 15 (2007) 1529–1539.
date_created: 2019-07-12T05:30:57Z
date_updated: 2022-01-06T06:51:12Z
department:
- _id: '54'
doi: 10.1109/TASL.2007.898454
intvolume: ' 15'
issue: '5'
keyword:
- acoustic signal processing
- arbitrary transfer function
- array signal processing
- blind acoustic beamforming
- direction-of-arrival
- direction-of-arrival estimation
- eigenvalues and eigenfunctions
- generalized eigenvalue decomposition
- gradient ascent adaptation algorithm
- microphone arrays
- microphones
- narrowband array beamforming
- sensor array
- single-channel post-filter
- spatially colored noise
- transfer functions
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2007/WaHa07.pdf
oa: '1'
page: 1529-1539
publication: IEEE Transactions on Audio, Speech, and Language Processing
status: public
title: Blind Acoustic Beamforming Based on Generalized Eigenvalue Decomposition
type: journal_article
user_id: '44006'
volume: 15
year: '2007'
...
---
_id: '39078'
author:
- first_name: Jürgen
full_name: Gausemeier, Jürgen
id: '163'
last_name: Gausemeier
- first_name: Wolfgang
full_name: Müller, Wolfgang
id: '16243'
last_name: Müller
- first_name: Volker
full_name: Paelke, Volker
last_name: Paelke
- first_name: Jürgen
full_name: Bauch, Jürgen
last_name: Bauch
- first_name: Q.
full_name: Shen, Q.
last_name: Shen
- first_name: 'R. '
full_name: 'Radkowski, R. '
last_name: Radkowski
citation:
ama: 'Gausemeier J, Müller W, Paelke V, Bauch J, Shen Q, Radkowski R. Virtual Prototyping
Of Self-Optimizing Mechatronic Systems. In: Proceedings of the Design 2004.
; 2004.'
apa: Gausemeier, J., Müller, W., Paelke, V., Bauch, J., Shen, Q., & Radkowski,
R. (2004). Virtual Prototyping Of Self-Optimizing Mechatronic Systems. Proceedings
of the Design 2004. 8th International Design Conference , Dubrovnik.
bibtex: '@inproceedings{Gausemeier_Müller_Paelke_Bauch_Shen_Radkowski_2004, place={Dubrovnik},
title={Virtual Prototyping Of Self-Optimizing Mechatronic Systems}, booktitle={Proceedings
of the Design 2004}, author={Gausemeier, Jürgen and Müller, Wolfgang and Paelke,
Volker and Bauch, Jürgen and Shen, Q. and Radkowski, R. }, year={2004} }'
chicago: Gausemeier, Jürgen, Wolfgang Müller, Volker Paelke, Jürgen Bauch, Q. Shen,
and R. Radkowski. “Virtual Prototyping Of Self-Optimizing Mechatronic Systems.”
In Proceedings of the Design 2004. Dubrovnik, 2004.
ieee: J. Gausemeier, W. Müller, V. Paelke, J. Bauch, Q. Shen, and R. Radkowski,
“Virtual Prototyping Of Self-Optimizing Mechatronic Systems,” presented at the
8th International Design Conference , Dubrovnik, 2004.
mla: Gausemeier, Jürgen, et al. “Virtual Prototyping Of Self-Optimizing Mechatronic
Systems.” Proceedings of the Design 2004, 2004.
short: 'J. Gausemeier, W. Müller, V. Paelke, J. Bauch, Q. Shen, R. Radkowski, in:
Proceedings of the Design 2004, Dubrovnik, 2004.'
conference:
location: Dubrovnik
name: '8th International Design Conference '
date_created: 2023-01-24T09:12:31Z
date_updated: 2023-01-24T09:12:40Z
department:
- _id: '672'
keyword:
- mechatronic systems
- self-optimization
- virtual prototyping
language:
- iso: eng
place: Dubrovnik
publication: Proceedings of the Design 2004
status: public
title: Virtual Prototyping Of Self-Optimizing Mechatronic Systems
type: conference
user_id: '5786'
year: '2004'
...
---
_id: '6065'
abstract:
- lang: eng
text: 'In the direct parameter specification (DPS) mode of sensorimotor control,
response parameters can be specified by stimuli that are not consciously perceived
[Psychological Research/Psychologische Forschung 52 (1990) 207]. DPS is contingent
on the current intentions. The invisible stimuli can be processed for the purposes
of sensorimotor control only if they match the actual intentions, for example,
share task-relevant features. The present experiments explore whether attentional
capture by masked abrupt-onset stimuli is mediated via DPS. Participants judged
which of two visual targets appeared first. Masked primes preceded one of the
targets. The primes were either similar to the targets or not, in shape, or in
color. Target-like (task-relevant), but not distractor-like (task-irrelevant),
primes facilitated perceptual latencies of targets trailing at their positions.
Thus, the latency effects resulted from DPS of an attention shift, rather than
from bottom-up capture or from top-down '
author:
- first_name: Ingrid
full_name: Scharlau, Ingrid
id: '451'
last_name: Scharlau
orcid: 0000-0003-2364-9489
- first_name: Ulrich
full_name: Ansorge, Ulrich
last_name: Ansorge
citation:
ama: 'Scharlau I, Ansorge U. Direct parameter specification of an attention shift:
Evidence from perceptual latency priming. Vision Research. 2003;43(12):1351-1363.'
apa: 'Scharlau, I., & Ansorge, U. (2003). Direct parameter specification of
an attention shift: Evidence from perceptual latency priming. Vision Research,
43(12), 1351–1363.'
bibtex: '@article{Scharlau_Ansorge_2003, title={Direct parameter specification of
an attention shift: Evidence from perceptual latency priming.}, volume={43}, number={12},
journal={Vision Research}, author={Scharlau, Ingrid and Ansorge, Ulrich}, year={2003},
pages={1351–1363} }'
chicago: 'Scharlau, Ingrid, and Ulrich Ansorge. “Direct Parameter Specification
of an Attention Shift: Evidence from Perceptual Latency Priming.” Vision Research
43, no. 12 (2003): 1351–63.'
ieee: 'I. Scharlau and U. Ansorge, “Direct parameter specification of an attention
shift: Evidence from perceptual latency priming.,” Vision Research, vol.
43, no. 12, pp. 1351–1363, 2003.'
mla: 'Scharlau, Ingrid, and Ulrich Ansorge. “Direct Parameter Specification of an
Attention Shift: Evidence from Perceptual Latency Priming.” Vision Research,
vol. 43, no. 12, 2003, pp. 1351–63.'
short: I. Scharlau, U. Ansorge, Vision Research 43 (2003) 1351–1363.
date_created: 2018-12-10T07:01:37Z
date_updated: 2022-06-07T00:26:34Z
department:
- _id: '424'
extern: '1'
intvolume: ' 43'
issue: '12'
keyword:
- direct parameter specification
- DPS
- attention shift
- latency priming
- sensorimotor control
- stimuli
- task-relevant features
- visual targets
- color
- shape
- latency effects
- Adult
- Attention
- Discrimination (Psychology)
- Female
- Humans
- Judgment
- Male
- Perceptual Masking
- Reaction Time
- Visual Perception
- Attention
- Perceptual Motor Processes
- Response Latency
- Stimulus Onset
- Visual Stimulation
- Form and Shape Perception
- Sensory Adaptation
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://kw.uni-paderborn.de/fileadmin/fakultaet/Institute/psychologie/Kognitive_Psychologie/Publikationen/ScharlauAnsorge2003VisResDPS.pdf
oa: '1'
page: 1351 - 1363
publication: Vision Research
publication_identifier:
issn:
- 0042-6989
publication_status: published
status: public
title: 'Direct parameter specification of an attention shift: Evidence from perceptual
latency priming.'
type: journal_article
user_id: '42165'
volume: 43
year: '2003'
...
---
_id: '11778'
abstract:
- lang: eng
text: In this paper, it is shown that a correlation criterion is the appropriate
criterion for bottom-up clustering to obtain broad phonetic class regression trees
for maximum likelihood linear regression (MLLR)-based speaker adaptation. The
correlation structure among speech units is estimated on the speaker-independent
training data. In adaptation experiments the tree outperformed a regression tree
obtained from clustering according to closeness in acoustic space and achieved
results comparable with those of a manually designed broad phonetic class tree
author:
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: Haeb-Umbach R. Automatic generation of phonetic regression class trees for
MLLR adaptation. IEEE Transactions on Speech and Audio Processing. 2001;9(3):299-302.
doi:10.1109/89.906003
apa: Haeb-Umbach, R. (2001). Automatic generation of phonetic regression class trees
for MLLR adaptation. IEEE Transactions on Speech and Audio Processing,
9(3), 299–302. https://doi.org/10.1109/89.906003
bibtex: '@article{Haeb-Umbach_2001, title={Automatic generation of phonetic regression
class trees for MLLR adaptation}, volume={9}, DOI={10.1109/89.906003},
number={3}, journal={IEEE Transactions on Speech and Audio Processing}, author={Haeb-Umbach,
Reinhold}, year={2001}, pages={299–302} }'
chicago: 'Haeb-Umbach, Reinhold. “Automatic Generation of Phonetic Regression Class
Trees for MLLR Adaptation.” IEEE Transactions on Speech and Audio Processing
9, no. 3 (2001): 299–302. https://doi.org/10.1109/89.906003.'
ieee: R. Haeb-Umbach, “Automatic generation of phonetic regression class trees for
MLLR adaptation,” IEEE Transactions on Speech and Audio Processing, vol.
9, no. 3, pp. 299–302, 2001.
mla: Haeb-Umbach, Reinhold. “Automatic Generation of Phonetic Regression Class Trees
for MLLR Adaptation.” IEEE Transactions on Speech and Audio Processing,
vol. 9, no. 3, 2001, pp. 299–302, doi:10.1109/89.906003.
short: R. Haeb-Umbach, IEEE Transactions on Speech and Audio Processing 9 (2001)
299–302.
date_created: 2019-07-12T05:28:04Z
date_updated: 2022-01-06T06:51:08Z
department:
- _id: '54'
doi: 10.1109/89.906003
intvolume: ' 9'
issue: '3'
keyword:
- acoustic space
- adaptation experiments
- automatic generation
- bottom-up clustering
- broad phonetic class regression trees
- correlation criterion
- correlation methods
- maximum likelihood estimation
- maximum likelihood linear regression based speaker adaptation
- MLLR adaptation
- pattern clustering
- phonetic regression class trees
- speaker-independent training data
- speech recognition
- speech units
- statistical analysis
- trees (mathematics)
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2001/Ha01.pdf
oa: '1'
page: 299-302
publication: IEEE Transactions on Speech and Audio Processing
status: public
title: Automatic generation of phonetic regression class trees for MLLR adaptation
type: journal_article
user_id: '44006'
volume: 9
year: '2001'
...