---
_id: '9978'
abstract:
- lang: eng
text: Piezoelectric transducers are used in a wide range of applications. Reliability
of these transducers is an important aspect in their application. Prognostics,
which involve continuous monitoring of the health of technical systems and using
this information to estimate the current health state and consequently predict
the remaining useful lifetime (RUL), can be used to increase the reliability,
safety, and availability of the transducers. This is achieved by utilizing the
health state and RUL predictions to adaptively control the usage of the components
or to schedule appropriate maintenance without interrupting operation. In this
work, a prognostic approach utilizing self-sensing, where electric signals of
a piezoelectric transducer are used as the condition monitoring data, is proposed.
The approach involves training machine learning algorithms to model the degradation
of the transducers through a health index and the use of the learned model to
estimate the health index of similar transducers. The current health index is
then used to estimate RUL of test components. The feasibility of the approach
is demonstrated using piezoelectric bimorphs and the results show that the method
is accurate in predicting the health index and RUL.
author:
- first_name: James Kuria
full_name: Kimotho, James Kuria
last_name: Kimotho
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
- first_name: Tobias
full_name: Hemsel, Tobias
id: '210'
last_name: Hemsel
citation:
ama: 'Kimotho JK, Sextro W, Hemsel T. Estimation of Remaining Useful Lifetime of
Piezoelectric Transducers Based on Self-Sensing. In: IEEE Transactions on Reliability.
; 2017:1-10. doi:10.1109/TR.2017.2710260'
apa: Kimotho, J. K., Sextro, W., & Hemsel, T. (2017). Estimation of Remaining
Useful Lifetime of Piezoelectric Transducers Based on Self-Sensing. In IEEE
Transactions on Reliability (pp. 1–10). https://doi.org/10.1109/TR.2017.2710260
bibtex: '@inproceedings{Kimotho_Sextro_Hemsel_2017, title={Estimation of Remaining
Useful Lifetime of Piezoelectric Transducers Based on Self-Sensing}, DOI={10.1109/TR.2017.2710260},
booktitle={IEEE Transactions on Reliability}, author={Kimotho, James Kuria and
Sextro, Walter and Hemsel, Tobias}, year={2017}, pages={1–10} }'
chicago: Kimotho, James Kuria, Walter Sextro, and Tobias Hemsel. “Estimation of
Remaining Useful Lifetime of Piezoelectric Transducers Based on Self-Sensing.”
In IEEE Transactions on Reliability, 1–10, 2017. https://doi.org/10.1109/TR.2017.2710260.
ieee: J. K. Kimotho, W. Sextro, and T. Hemsel, “Estimation of Remaining Useful Lifetime
of Piezoelectric Transducers Based on Self-Sensing,” in IEEE Transactions on
Reliability, 2017, pp. 1–10.
mla: Kimotho, James Kuria, et al. “Estimation of Remaining Useful Lifetime of Piezoelectric
Transducers Based on Self-Sensing.” IEEE Transactions on Reliability, 2017,
pp. 1–10, doi:10.1109/TR.2017.2710260.
short: 'J.K. Kimotho, W. Sextro, T. Hemsel, in: IEEE Transactions on Reliability,
2017, pp. 1–10.'
date_created: 2019-05-27T09:41:06Z
date_updated: 2019-09-16T10:32:05Z
department:
- _id: '151'
doi: 10.1109/TR.2017.2710260
keyword:
- Estimation of Remaining Useful Lifetime of Piezoelectric Transducers Based on Self-Sensing
language:
- iso: eng
page: 1 - 10
publication: IEEE Transactions on Reliability
quality_controlled: '1'
status: public
title: Estimation of Remaining Useful Lifetime of Piezoelectric Transducers Based
on Self-Sensing
type: conference
user_id: '55222'
year: '2017'
...
---
_id: '10780'
author:
- first_name: Zakarya
full_name: Guettatfi, Zakarya
last_name: Guettatfi
- first_name: Philipp
full_name: Hübner, Philipp
last_name: Hübner
- first_name: Marco
full_name: Platzner, Marco
id: '398'
last_name: Platzner
- first_name: Bernhard
full_name: Rinner, Bernhard
last_name: Rinner
citation:
ama: 'Guettatfi Z, Hübner P, Platzner M, Rinner B. Computational self-awareness
as design approach for visual sensor nodes. In: 12th International Symposium
on Reconfigurable Communication-Centric Systems-on-Chip (ReCoSoC). ; 2017:1-8.
doi:10.1109/ReCoSoC.2017.8016147'
apa: Guettatfi, Z., Hübner, P., Platzner, M., & Rinner, B. (2017). Computational
self-awareness as design approach for visual sensor nodes. In 12th International
Symposium on Reconfigurable Communication-centric Systems-on-Chip (ReCoSoC)
(pp. 1–8). https://doi.org/10.1109/ReCoSoC.2017.8016147
bibtex: '@inproceedings{Guettatfi_Hübner_Platzner_Rinner_2017, title={Computational
self-awareness as design approach for visual sensor nodes}, DOI={10.1109/ReCoSoC.2017.8016147},
booktitle={12th International Symposium on Reconfigurable Communication-centric
Systems-on-Chip (ReCoSoC)}, author={Guettatfi, Zakarya and Hübner, Philipp and
Platzner, Marco and Rinner, Bernhard}, year={2017}, pages={1–8} }'
chicago: Guettatfi, Zakarya, Philipp Hübner, Marco Platzner, and Bernhard Rinner.
“Computational Self-Awareness as Design Approach for Visual Sensor Nodes.” In
12th International Symposium on Reconfigurable Communication-Centric Systems-on-Chip
(ReCoSoC), 1–8, 2017. https://doi.org/10.1109/ReCoSoC.2017.8016147.
ieee: Z. Guettatfi, P. Hübner, M. Platzner, and B. Rinner, “Computational self-awareness
as design approach for visual sensor nodes,” in 12th International Symposium
on Reconfigurable Communication-centric Systems-on-Chip (ReCoSoC), 2017, pp.
1–8.
mla: Guettatfi, Zakarya, et al. “Computational Self-Awareness as Design Approach
for Visual Sensor Nodes.” 12th International Symposium on Reconfigurable Communication-Centric
Systems-on-Chip (ReCoSoC), 2017, pp. 1–8, doi:10.1109/ReCoSoC.2017.8016147.
short: 'Z. Guettatfi, P. Hübner, M. Platzner, B. Rinner, in: 12th International
Symposium on Reconfigurable Communication-Centric Systems-on-Chip (ReCoSoC), 2017,
pp. 1–8.'
date_created: 2019-07-10T12:13:15Z
date_updated: 2022-01-06T06:50:50Z
department:
- _id: '78'
doi: 10.1109/ReCoSoC.2017.8016147
keyword:
- embedded systems
- image sensors
- power aware computing
- wireless sensor networks
- Zynq-based VSN node prototype
- computational self-awareness
- design approach
- platform levels
- power consumption
- visual sensor networks
- visual sensor nodes
- Cameras
- Hardware
- Middleware
- Multicore processing
- Operating systems
- Runtime
- Reconfigurable platforms
- distributed embedded systems
- performance-resource trade-off
- self-awareness
- visual sensor nodes
language:
- iso: eng
page: 1-8
publication: 12th International Symposium on Reconfigurable Communication-centric
Systems-on-Chip (ReCoSoC)
status: public
title: Computational self-awareness as design approach for visual sensor nodes
type: conference
user_id: '3118'
year: '2017'
...
---
_id: '29462'
abstract:
- lang: eng
text: Time-variant age information of different parts of a system can be used for
system-level performance improvement through high-level task scheduling, thus
extending the life-time of the system. Progressive age information should provide
the age state that the system is in, and the rate that it is being aged at. In
this paper, we propose a structure that monitors certain paths of a circuit and
detects its gradual age growth, and provides the aging rate and aging state of
the circuit. The proposed monitors are placed on a selected set of nodes that
represent a timing bottleneck of the system. These monitors sample expected data
on these nodes, and compare them with the expected values. The timing of sampling
changes as the circuit ages and its delay increases. The timing of sampling will
provide a measure of aging advancement of a circuit. To assess the efficacy of
the proposed method and compare it with other state-of-the-art aging monitors,
we use them on selected nodes of the execution unit of different processors, as
well as some circuits from ITC99 benchmarks. The results reveal that the precision
of our proposed method is between 0.12 (ns) to 0.401 (ns). Its Area and power
overhead are negligible and are about 2.13 and 0.69 percent respectively.
author:
- first_name: Somayeh
full_name: Sadeghi-Kohan, Somayeh
id: '78614'
last_name: Sadeghi-Kohan
orcid: https://orcid.org/0000-0001-7246-0610
- first_name: Mehdi
full_name: Kamal, Mehdi
last_name: Kamal
- first_name: Zainalabedin
full_name: Navabi, Zainalabedin
last_name: Navabi
citation:
ama: Sadeghi-Kohan S, Kamal M, Navabi Z. Self-Adjusting Monitor for Measuring Aging
Rate and Advancement. IEEE Transactions on Emerging Topics in Computing.
2017;8(3):627-641. doi:10.1109/tetc.2017.2771441
apa: Sadeghi-Kohan, S., Kamal, M., & Navabi, Z. (2017). Self-Adjusting Monitor
for Measuring Aging Rate and Advancement. IEEE Transactions on Emerging Topics
in Computing, 8(3), 627–641. https://doi.org/10.1109/tetc.2017.2771441
bibtex: '@article{Sadeghi-Kohan_Kamal_Navabi_2017, title={Self-Adjusting Monitor
for Measuring Aging Rate and Advancement}, volume={8}, DOI={10.1109/tetc.2017.2771441},
number={3}, journal={IEEE Transactions on Emerging Topics in Computing}, publisher={Institute
of Electrical and Electronics Engineers (IEEE)}, author={Sadeghi-Kohan, Somayeh
and Kamal, Mehdi and Navabi, Zainalabedin}, year={2017}, pages={627–641} }'
chicago: 'Sadeghi-Kohan, Somayeh, Mehdi Kamal, and Zainalabedin Navabi. “Self-Adjusting
Monitor for Measuring Aging Rate and Advancement.” IEEE Transactions on Emerging
Topics in Computing 8, no. 3 (2017): 627–41. https://doi.org/10.1109/tetc.2017.2771441.'
ieee: 'S. Sadeghi-Kohan, M. Kamal, and Z. Navabi, “Self-Adjusting Monitor for Measuring
Aging Rate and Advancement,” IEEE Transactions on Emerging Topics in Computing,
vol. 8, no. 3, pp. 627–641, 2017, doi: 10.1109/tetc.2017.2771441.'
mla: Sadeghi-Kohan, Somayeh, et al. “Self-Adjusting Monitor for Measuring Aging
Rate and Advancement.” IEEE Transactions on Emerging Topics in Computing,
vol. 8, no. 3, Institute of Electrical and Electronics Engineers (IEEE), 2017,
pp. 627–41, doi:10.1109/tetc.2017.2771441.
short: S. Sadeghi-Kohan, M. Kamal, Z. Navabi, IEEE Transactions on Emerging Topics
in Computing 8 (2017) 627–641.
date_created: 2022-01-19T13:45:51Z
date_updated: 2023-08-02T11:36:30Z
department:
- _id: '48'
doi: 10.1109/tetc.2017.2771441
extern: '1'
intvolume: ' 8'
issue: '3'
keyword:
- Age advancement
- age monitoring clock
- aging rate
- self-adjusting monitors
language:
- iso: eng
page: 627-641
publication: IEEE Transactions on Emerging Topics in Computing
publication_identifier:
issn:
- 2168-6750
- 2376-4562
publication_status: published
publisher: Institute of Electrical and Electronics Engineers (IEEE)
status: public
title: Self-Adjusting Monitor for Measuring Aging Rate and Advancement
type: journal_article
user_id: '78614'
volume: 8
year: '2017'
...
---
_id: '64053'
abstract:
- lang: eng
text: The utilization and preparation of functional hybrid films for optical sensing
applications and membranes is of utmost importance. In this work, we report the
convenient and scalable preparation of self-crosslinking particle-based films
derived by directed self-assembly of alkoxysilane-based cross-linkers as part
of a core-shell particle architecture. The synthesis of well-designed monodisperse
core-shell particles by emulsion polymerization is the basic prerequisite for
subsequent particle processing via the melt-shear organization technique. In more
detail, the core particles consist of polystyrene (PS) or poly(methyl methacrylate)
(PMMA), while the comparably soft particle shell consists of poly(ethyl acrylate)
(PEA) and different alkoxysilane-based poly(methacrylate)s. For hybrid film formation
and convenient self-cross-linking, different alkyl groups at the siloxane moieties
were investigated in detail by solid-state Magic-Angle Spinning Nuclear Magnetic
Resonance (MAS, NMR) spectroscopy revealing different crosslinking capabilities,
which strongly influence the properties of the core or shell particle films with
respect to transparency and iridescent reflection colors. Furthermore, solid-state
NMR spectroscopy and investigation of the thermal properties by differential scanning
calorimetry (DSC) measurements allow for insights into the cross-linking capabilities
prior to and after synthesis, as well as after the thermally and pressure-induced
processing steps. Subsequently, free-standing and self-crosslinked particle-based
films featuring excellent particle order are obtained by application of the melt-shear
organization technique, as shown by microscopy (TEM, SEM).
author:
- first_name: S.
full_name: Vowinkel, S.
last_name: Vowinkel
- first_name: S.
full_name: Paul, S.
last_name: Paul
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: M.
full_name: Gallei, M.
last_name: Gallei
citation:
ama: Vowinkel S, Paul S, Gutmann T, Gallei M. Free-Standing and Self-Crosslinkable
Hybrid Films by Core-Shell Particle Design and Processing. Nanomaterials.
2017;7(11):390. doi:10.3390/nano7110390
apa: Vowinkel, S., Paul, S., Gutmann, T., & Gallei, M. (2017). Free-Standing
and Self-Crosslinkable Hybrid Films by Core-Shell Particle Design and Processing.
Nanomaterials, 7(11), 390. https://doi.org/10.3390/nano7110390
bibtex: '@article{Vowinkel_Paul_Gutmann_Gallei_2017, title={Free-Standing and Self-Crosslinkable
Hybrid Films by Core-Shell Particle Design and Processing}, volume={7}, DOI={10.3390/nano7110390}, number={11},
journal={Nanomaterials}, author={Vowinkel, S. and Paul, S. and Gutmann, Torsten
and Gallei, M.}, year={2017}, pages={390} }'
chicago: 'Vowinkel, S., S. Paul, Torsten Gutmann, and M. Gallei. “Free-Standing
and Self-Crosslinkable Hybrid Films by Core-Shell Particle Design and Processing.”
Nanomaterials 7, no. 11 (2017): 390. https://doi.org/10.3390/nano7110390.'
ieee: 'S. Vowinkel, S. Paul, T. Gutmann, and M. Gallei, “Free-Standing and Self-Crosslinkable
Hybrid Films by Core-Shell Particle Design and Processing,” Nanomaterials,
vol. 7, no. 11, p. 390, 2017, doi: 10.3390/nano7110390.'
mla: Vowinkel, S., et al. “Free-Standing and Self-Crosslinkable Hybrid Films by
Core-Shell Particle Design and Processing.” Nanomaterials, vol. 7, no.
11, 2017, p. 390, doi:10.3390/nano7110390.
short: S. Vowinkel, S. Paul, T. Gutmann, M. Gallei, Nanomaterials 7 (2017) 390.
date_created: 2026-02-07T16:15:23Z
date_updated: 2026-02-17T16:12:54Z
doi: 10.3390/nano7110390
extern: '1'
intvolume: ' 7'
issue: '11'
keyword:
- Materials Science
- Science & Technology - Other Topics
- solid-state nmr
- spectroscopy
- catalysts
- colloidal crystals
- colloids
- cross-linking
- elastomeric opal films
- emulsion polymerization
- gamma-methacryloxypropyltrimethoxysilane
- hybrid films
- melt-shear organization
- nanoparticles
- particle
- photons
- polymers
- processing
- self-assembly
- transition
language:
- iso: eng
page: '390'
publication: Nanomaterials
publication_identifier:
issn:
- 2079-4991
status: public
title: Free-Standing and Self-Crosslinkable Hybrid Films by Core-Shell Particle Design
and Processing
type: journal_article
user_id: '100715'
volume: 7
year: '2017'
...
---
_id: '64057'
abstract:
- lang: eng
text: Self-assembly of nanoparticles (NPs) forming unique structures has been investigated
extensively over the past few years. However, many self-assembled structures by
NPs are irreversible, because they are generally constructed using their suspensions.
It is still challenging for NPs to reversibly self-assemble in dry state, let
alone of polymeric NPs with general sizes of hundreds of nm. Herein, this study
reports a new reversible self-assembly phenomenon of NPs in dry state, forming
thermoreversible strip-like supermolecular structures. These novel NPs of around
150 nm are perfluorinated surface-undecenoated cellulose nanoparticles (FSU-CNPs)
with a core-coronas structure. The thermoreversible self-assembled structure is
formed after drying in the air at the interface between FSU-CNP films and Teflon
substrates. Remarkably, the formation and dissociation of this assembled structure
are accompanied by a reversible conversion of the surface hydrophobicity, film
transparency, and anisotropic properties. These findings show novel feasibility
of reversible self-assembly of NPs in dry state, and thereby expand our knowledge
of self-assembly phenomenon.
author:
- first_name: Yonggui
full_name: Wang, Yonggui
last_name: Wang
- first_name: Pedro B.
full_name: Groszewicz, Pedro B.
last_name: Groszewicz
- first_name: Sabine
full_name: Rosenfeldt, Sabine
last_name: Rosenfeldt
- first_name: Hendrik
full_name: Schmidt, Hendrik
last_name: Schmidt
- first_name: Cynthia A.
full_name: Volkert, Cynthia A.
last_name: Volkert
- first_name: Philipp
full_name: Vana, Philipp
last_name: Vana
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: Gerd
full_name: Buntkowsky, Gerd
last_name: Buntkowsky
- first_name: Kai
full_name: Zhang, Kai
last_name: Zhang
citation:
ama: Wang Y, Groszewicz PB, Rosenfeldt S, et al. Thermoreversible Self-Assembly
of Perfluorinated Core-Coronas Cellulose-Nanoparticles in Dry State. Advanced
Materials. Published online 2017:1702473. doi:10.1002/adma.201702473
apa: Wang, Y., Groszewicz, P. B., Rosenfeldt, S., Schmidt, H., Volkert, C. A., Vana,
P., Gutmann, T., Buntkowsky, G., & Zhang, K. (2017). Thermoreversible Self-Assembly
of Perfluorinated Core-Coronas Cellulose-Nanoparticles in Dry State. Advanced
Materials, 1702473. https://doi.org/10.1002/adma.201702473
bibtex: '@article{Wang_Groszewicz_Rosenfeldt_Schmidt_Volkert_Vana_Gutmann_Buntkowsky_Zhang_2017,
title={Thermoreversible Self-Assembly of Perfluorinated Core-Coronas Cellulose-Nanoparticles
in Dry State}, DOI={10.1002/adma.201702473},
journal={Advanced Materials}, author={Wang, Yonggui and Groszewicz, Pedro B. and
Rosenfeldt, Sabine and Schmidt, Hendrik and Volkert, Cynthia A. and Vana, Philipp
and Gutmann, Torsten and Buntkowsky, Gerd and Zhang, Kai}, year={2017}, pages={1702473}
}'
chicago: Wang, Yonggui, Pedro B. Groszewicz, Sabine Rosenfeldt, Hendrik Schmidt,
Cynthia A. Volkert, Philipp Vana, Torsten Gutmann, Gerd Buntkowsky, and Kai Zhang.
“Thermoreversible Self-Assembly of Perfluorinated Core-Coronas Cellulose-Nanoparticles
in Dry State.” Advanced Materials, 2017, 1702473. https://doi.org/10.1002/adma.201702473.
ieee: 'Y. Wang et al., “Thermoreversible Self-Assembly of Perfluorinated
Core-Coronas Cellulose-Nanoparticles in Dry State,” Advanced Materials,
p. 1702473, 2017, doi: 10.1002/adma.201702473.'
mla: Wang, Yonggui, et al. “Thermoreversible Self-Assembly of Perfluorinated Core-Coronas
Cellulose-Nanoparticles in Dry State.” Advanced Materials, 2017, p. 1702473,
doi:10.1002/adma.201702473.
short: Y. Wang, P.B. Groszewicz, S. Rosenfeldt, H. Schmidt, C.A. Volkert, P. Vana,
T. Gutmann, G. Buntkowsky, K. Zhang, Advanced Materials (2017) 1702473.
date_created: 2026-02-07T16:16:37Z
date_updated: 2026-02-17T16:12:48Z
doi: 10.1002/adma.201702473
extern: '1'
keyword:
- nanoparticles
- self-assembly
- cellulose
- core-coronas structure
- thermoreversible
language:
- iso: eng
page: '1702473'
publication: Advanced Materials
status: public
title: Thermoreversible Self-Assembly of Perfluorinated Core-Coronas Cellulose-Nanoparticles
in Dry State
type: journal_article
user_id: '100715'
year: '2017'
...
---
_id: '9966'
abstract:
- lang: eng
text: Usage of copper wire bonds allows to push power boundaries imposed by aluminum
wire bonds. Copper allows higher electrical, thermal and mechanical loads than
aluminum, which currently is the most commonly used material in heavy wire bonding.
This is the main driving factor for increased usage of copper in high power applications
such as wind turbines, locomotives or electric vehicles. At the same time, usage
of copper also increases tool wear and reduces the range of parameter values for
a stable process, making the process more challenging. To overcome these drawbacks,
parameter adaptation at runtime using self-optimization is desired. A self-optimizing
system is based on system objectives that evaluate and quantify system performance.
System parameters can be changed at runtime such that pre-selected objective values
are reached. For adaptation of bond process parameters, model-based self-optimization
is employed. Since it is based on a model of the system, the bond process was
modeled. In addition to static model parameters such as wire and substrate material
properties and vibration characteristics of transducer and tool, variable model
inputs are process parameters. Main simulation result is bonded area in the wiresubstrate
contact. This model is then used to find valid and optimal working points before
operation. The working point is composed of normal force and ultrasonic voltage
trajectories, which are usually determined experimentally. Instead, multiobjective
optimalization is used to compute trajectories that simultaneously optimize bond
quality, process duration, tool wear and probability of tool-substrate contacts.
The values of these objectives are computed using the process model. At runtime,
selection among pre-determined optimal working points is sufficient to prioritize
individual objectives. This way, the computationally expensive process of numerically
solving a multiobjective optimal control problem and the demanding high speed
bonding process are separated. To evaluate to what extent the pre-defined goals
of self-optimization are met, an offthe- shelf heavy wire bonding machine was
modified to allow for parameter adaptation and for transmitting of measurement
data at runtime. This data is received by an external computer system and evaluated
to select a new working point. Then, new process parameters are sent to the modified
bonding machine for use for subsequent bonds. With these components, a full self-optimizing
system has been implemented.
author:
- first_name: Tobias
full_name: Meyer , Tobias
last_name: 'Meyer '
- first_name: Andreas
full_name: Unger, Andreas
last_name: Unger
- first_name: Simon
full_name: Althoff, Simon
last_name: Althoff
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
- first_name: Michael
full_name: Brökelmann, Michael
last_name: Brökelmann
- first_name: Matthias
full_name: Hunstig, Matthias
last_name: Hunstig
- first_name: Karsten
full_name: Guth, Karsten
last_name: Guth
citation:
ama: 'Meyer T, Unger A, Althoff S, et al. Reliable Manufacturing of Heavy Copper
Wire Bonds Using Online Parameter Adaptation. In: IEEE 66th Electronic Components
and Technology Conference. ; 2016:622-628. doi:10.1109/ECTC.2016.215'
apa: Meyer , T., Unger, A., Althoff, S., Sextro, W., Brökelmann, M., Hunstig, M.,
& Guth, K. (2016). Reliable Manufacturing of Heavy Copper Wire Bonds Using
Online Parameter Adaptation. In IEEE 66th Electronic Components and Technology
Conference (pp. 622–628). https://doi.org/10.1109/ECTC.2016.215
bibtex: '@inproceedings{Meyer _Unger_Althoff_Sextro_Brökelmann_Hunstig_Guth_2016,
title={Reliable Manufacturing of Heavy Copper Wire Bonds Using Online Parameter
Adaptation}, DOI={10.1109/ECTC.2016.215},
booktitle={IEEE 66th Electronic Components and Technology Conference}, author={Meyer
, Tobias and Unger, Andreas and Althoff, Simon and Sextro, Walter and Brökelmann,
Michael and Hunstig, Matthias and Guth, Karsten}, year={2016}, pages={622–628}
}'
chicago: Meyer , Tobias, Andreas Unger, Simon Althoff, Walter Sextro, Michael Brökelmann,
Matthias Hunstig, and Karsten Guth. “Reliable Manufacturing of Heavy Copper Wire
Bonds Using Online Parameter Adaptation.” In IEEE 66th Electronic Components
and Technology Conference, 622–28, 2016. https://doi.org/10.1109/ECTC.2016.215.
ieee: T. Meyer et al., “Reliable Manufacturing of Heavy Copper Wire Bonds
Using Online Parameter Adaptation,” in IEEE 66th Electronic Components and
Technology Conference, 2016, pp. 622–628.
mla: Meyer , Tobias, et al. “Reliable Manufacturing of Heavy Copper Wire Bonds Using
Online Parameter Adaptation.” IEEE 66th Electronic Components and Technology
Conference, 2016, pp. 622–28, doi:10.1109/ECTC.2016.215.
short: 'T. Meyer , A. Unger, S. Althoff, W. Sextro, M. Brökelmann, M. Hunstig, K.
Guth, in: IEEE 66th Electronic Components and Technology Conference, 2016, pp.
622–628.'
date_created: 2019-05-27T09:17:26Z
date_updated: 2020-05-07T05:33:53Z
department:
- _id: '151'
doi: 10.1109/ECTC.2016.215
keyword:
- Self-optimization
- adaptive system
- bond process
- copper wire
language:
- iso: eng
page: 622-628
project:
- _id: '92'
grant_number: 02 PQ2210
name: Intelligente Herstellung zuverlässiger Kupferbondverbindungen
publication: IEEE 66th Electronic Components and Technology Conference
quality_controlled: '1'
status: public
title: Reliable Manufacturing of Heavy Copper Wire Bonds Using Online Parameter Adaptation
type: conference
user_id: '210'
year: '2016'
...
---
_id: '1772'
author:
- first_name: Jim
full_name: Torresen, Jim
last_name: Torresen
- first_name: Christian
full_name: Plessl, Christian
id: '16153'
last_name: Plessl
orcid: 0000-0001-5728-9982
- first_name: Xin
full_name: Yao, Xin
last_name: Yao
citation:
ama: Torresen J, Plessl C, Yao X. Self-Aware and Self-Expressive Systems – Guest
Editor’s Introduction. IEEE Computer. 2015;48(7):18-20. doi:10.1109/MC.2015.205
apa: Torresen, J., Plessl, C., & Yao, X. (2015). Self-Aware and Self-Expressive
Systems – Guest Editor’s Introduction. IEEE Computer, 48(7), 18–20.
https://doi.org/10.1109/MC.2015.205
bibtex: '@article{Torresen_Plessl_Yao_2015, title={Self-Aware and Self-Expressive
Systems – Guest Editor’s Introduction}, volume={48}, DOI={10.1109/MC.2015.205},
number={7}, journal={IEEE Computer}, publisher={IEEE Computer Society}, author={Torresen,
Jim and Plessl, Christian and Yao, Xin}, year={2015}, pages={18–20} }'
chicago: 'Torresen, Jim, Christian Plessl, and Xin Yao. “Self-Aware and Self-Expressive
Systems – Guest Editor’s Introduction.” IEEE Computer 48, no. 7 (2015):
18–20. https://doi.org/10.1109/MC.2015.205.'
ieee: J. Torresen, C. Plessl, and X. Yao, “Self-Aware and Self-Expressive Systems
– Guest Editor’s Introduction,” IEEE Computer, vol. 48, no. 7, pp. 18–20,
2015.
mla: Torresen, Jim, et al. “Self-Aware and Self-Expressive Systems – Guest Editor’s
Introduction.” IEEE Computer, vol. 48, no. 7, IEEE Computer Society, 2015,
pp. 18–20, doi:10.1109/MC.2015.205.
short: J. Torresen, C. Plessl, X. Yao, IEEE Computer 48 (2015) 18–20.
date_created: 2018-03-23T14:06:12Z
date_updated: 2022-01-06T06:53:19Z
ddc:
- '000'
department:
- _id: '27'
- _id: '518'
- _id: '78'
doi: 10.1109/MC.2015.205
file:
- access_level: closed
content_type: application/pdf
creator: ups
date_created: 2018-11-02T15:47:45Z
date_updated: 2018-11-02T15:47:45Z
file_id: '5313'
file_name: 07163237.pdf
file_size: 5605009
relation: main_file
success: 1
file_date_updated: 2018-11-02T15:47:45Z
has_accepted_license: '1'
intvolume: ' 48'
issue: '7'
keyword:
- self-awareness
- self-expression
language:
- iso: eng
page: 18-20
project:
- _id: '1'
name: SFB 901
- _id: '4'
name: SFB 901 - Project Area C
- _id: '14'
name: SFB 901 - Subproject C2
- _id: '34'
grant_number: '610996'
name: Self-Adaptive Virtualisation-Aware High-Performance/Low-Energy Heterogeneous
System Architectures
publication: IEEE Computer
publisher: IEEE Computer Society
status: public
title: Self-Aware and Self-Expressive Systems – Guest Editor's Introduction
type: journal_article
user_id: '16153'
volume: 48
year: '2015'
...
---
_id: '5704'
abstract:
- lang: eng
text: 'Advancements in information technology have changed the way customers experience
a service encounter and their relationship with service providers. Especially
technology-based self-service channels have found their way into the 21st century
service economy. While research embraces these channels for their cost-efficiency,
it has not examined whether a shift from personal to self-service affects customer–firm
relationships. Drawing from the service-dominant logic and its central concept
of value-in-context, we discuss customers’ value creation in self-service and
personal service channels and examine the long-term impact of these channels on
customer retention. Using longitudinal customer data, we investigate how the ratio
of self-service versus personal service use influences customer defection over
time. Our findings suggest that the ratio of self-service to personal service
used affects customer defection in a U-shaped manner, with intermediate levels
of both self-service and personal service use being associated with the lowest
likelihood of defection. We also find that this effect mitigates over time. We
conclude that firms should not shift customers toward self-service channels completely,
especially not at the beginning of a relationship. Our study underlines the importance
of understanding when and how self-service technologies create valuable customer
experiences and stresses the notion of actively managing customers’ cocreation
of value. '
article_type: original
author:
- first_name: Anne
full_name: Scherer, Anne
last_name: Scherer
- first_name: Nancy
full_name: Wünderlich, Nancy
id: '36392'
last_name: Wünderlich
- first_name: Florian
full_name: Von Wangenheim, Florian
last_name: Von Wangenheim
citation:
ama: 'Scherer A, Wünderlich N, Von Wangenheim F. The Value of Self-Service: Long-Term
Effects of Technology-Based Self-Service Usage on Customer Retention. MIS Quarterly.
2015;39(1):177-200.'
apa: 'Scherer, A., Wünderlich, N., & Von Wangenheim, F. (2015). The Value of
Self-Service: Long-Term Effects of Technology-Based Self-Service Usage on Customer
Retention. MIS Quarterly, 39(1), 177–200.'
bibtex: '@article{Scherer_Wünderlich_Von Wangenheim_2015, title={The Value of Self-Service:
Long-Term Effects of Technology-Based Self-Service Usage on Customer Retention.},
volume={39}, number={1}, journal={MIS Quarterly}, publisher={MIS RC}, author={Scherer,
Anne and Wünderlich, Nancy and Von Wangenheim, Florian}, year={2015}, pages={177–200}
}'
chicago: 'Scherer, Anne, Nancy Wünderlich, and Florian Von Wangenheim. “The Value
of Self-Service: Long-Term Effects of Technology-Based Self-Service Usage on Customer
Retention.” MIS Quarterly 39, no. 1 (2015): 177–200.'
ieee: 'A. Scherer, N. Wünderlich, and F. Von Wangenheim, “The Value of Self-Service:
Long-Term Effects of Technology-Based Self-Service Usage on Customer Retention.,”
MIS Quarterly, vol. 39, no. 1, pp. 177–200, 2015.'
mla: 'Scherer, Anne, et al. “The Value of Self-Service: Long-Term Effects of Technology-Based
Self-Service Usage on Customer Retention.” MIS Quarterly, vol. 39, no.
1, MIS RC, 2015, pp. 177–200.'
short: A. Scherer, N. Wünderlich, F. Von Wangenheim, MIS Quarterly 39 (2015) 177–200.
date_created: 2018-11-15T11:36:38Z
date_updated: 2022-01-06T07:02:36Z
department:
- _id: '181'
intvolume: ' 39'
issue: '1'
keyword:
- customer defection
- customer retention
- e-service
- longitudinal
- Self-service
- value-in-context
language:
- iso: eng
page: 177-200
publication: MIS Quarterly
publication_identifier:
issn:
- 0276-7783.
publication_status: published
publisher: MIS RC
status: public
title: 'The Value of Self-Service: Long-Term Effects of Technology-Based Self-Service
Usage on Customer Retention.'
type: journal_article
user_id: '37741'
volume: 39
year: '2015'
...
---
_id: '4464'
abstract:
- lang: eng
text: A highly selective first study phase in many Swiss study programs leads to
a rather competitive climate among students. However, the atmosphere at the university
is an important factor for students' transition into Higher Education. An important
question in this context is whether students' are equipped with different dispositions
influencing how they cope with this transition. Other research has already shown
that different groups of students can be identified regarding their student behavior.
Yet, so far little is known about patterns of variables characterizing students,
transitioning successfully. The paper takes advantage of a person-centered approach,
i.e. the latent-class analysis, which makes it possible to identify groups of
individuals, sharing common attributes. The research was conducted as a longitudinal
study during their first year at a Swiss university. The return rate was about
67%, with 820 utilizable questionnaires at t1. Based on the analysis of students'
anxiety, intrinsic motivation and self-efficacy, three distinct classes of students
could be identified. The first class can be called the "highly motivated and self-confident"
students. The second class is characterized by the same pattern, however, on a
more intermediate level and the last class can be described as the "least motivated
and most anxious" group of students. This study contributes to research and theory
on students' transition into higher education and could be a first hint that students'
experiences of this transition can vary substantially.
author:
- first_name: Taiga
full_name: Brahm, Taiga
last_name: Brahm
- first_name: Dietrich
full_name: Wagner, Dietrich
last_name: Wagner
- first_name: Tobias
full_name: Jenert, Tobias
id: '71994'
last_name: Jenert
orcid: ' https://orcid.org/0000-0001-9262-5646'
citation:
ama: 'Brahm T, Wagner D, Jenert T. A person-centred approach to students’ transition
into Higher Education. In: ; 2015.'
apa: Brahm, T., Wagner, D., & Jenert, T. (2015). A person-centred approach to
students’ transition into Higher Education. Presented at the 16th Biennial EARLI
Conference for Research on Learning and Instruction, Zypern.
bibtex: '@inproceedings{Brahm_Wagner_Jenert_2015, title={A person-centred approach
to students’ transition into Higher Education}, author={Brahm, Taiga and Wagner,
Dietrich and Jenert, Tobias}, year={2015} }'
chicago: Brahm, Taiga, Dietrich Wagner, and Tobias Jenert. “A Person-Centred Approach
to Students’ Transition into Higher Education,” 2015.
ieee: T. Brahm, D. Wagner, and T. Jenert, “A person-centred approach to students’
transition into Higher Education,” presented at the 16th Biennial EARLI Conference
for Research on Learning and Instruction, Zypern, 2015.
mla: Brahm, Taiga, et al. A Person-Centred Approach to Students’ Transition into
Higher Education. 2015.
short: 'T. Brahm, D. Wagner, T. Jenert, in: 2015.'
conference:
end_date: 2015-08-29
location: Zypern
name: 16th Biennial EARLI Conference for Research on Learning and Instruction
start_date: 2015-08-25
date_created: 2018-09-18T12:56:31Z
date_updated: 2022-01-06T07:01:05Z
department:
- _id: '208'
- _id: '282'
extern: '1'
keyword:
- Quantitative methods
- Self-efficacy
- Higher education
- Motivation and Emotion
status: public
title: A person-centred approach to students' transition into Higher Education
type: conference
user_id: '51057'
year: '2015'
...
---
_id: '9944'
abstract:
- lang: eng
text: Eine Vielzahl von Prozessen in der Chemie und Verfahrenstechnik kann durch
Ultraschall positiv beeinflusst werden. Oftmals ist ultraschallinduzierte Kavitation
der Hauptwirkmechanismus für die positiven Effekte der Beschallung. Daher ist
es notwendig die Kavitationsaktivität während des Prozesses zu quantifizieren
um die Beschallung für den jeweiligen Prozess optimal gestalten und überwachen
zu können. Eine Möglichkeit der prozessbegleitenden Kavitationsdetektion ist die
Auswertung der akustischen Emissionen von oszillierenden und kollabierenden Kavitationsblasen
mittels Drucksensoren in der Flüssigkeit. Raue Prozessrandbedingungen wie hohe
Temperaturen oder aggressive Flüssigkeiten erschweren es jedoch geeignete Sensoren
zu finden. Als Alternative wurde daher die Nutzbarkeit der Rückwirkung von Kavitationsereignissen
auf das elektrische Eingansgssignal des Ultraschallwandlers zur Quantifizierung
von Kavitation untersucht. Die experimentelle Analyse hat ergeben, dass das Einsetzen
und in einigen Fällen auch die Art der Kavitation auf Basis der Rückwirkung auf
das Stromsignal des Ultraschallwandlers bestimmt werden kann. Die Stärke der Kavitation
war hingegen nicht aus den Stromsignalen abzuleiten.
author:
- first_name: Peter
full_name: Bornmann, Peter
last_name: Bornmann
- first_name: Tobias
full_name: Hemsel, Tobias
id: '210'
last_name: Hemsel
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
- first_name: Gianluca
full_name: Memoli, Gianluca
last_name: Memoli
- first_name: Mark
full_name: Hodnett, Mark
last_name: Hodnett
- first_name: Bajram
full_name: Zeqiri, Bajram
last_name: Zeqiri
citation:
ama: Bornmann P, Hemsel T, Sextro W, Memoli G, Hodnett M, Zeqiri B. Kavitationsdetektion
mittels Self-Sensing-Ultraschallwandler. tm - Technisches Messen. 2015;82(2):73-84.
doi:10.1515/teme-2015-0017
apa: Bornmann, P., Hemsel, T., Sextro, W., Memoli, G., Hodnett, M., & Zeqiri,
B. (2015). Kavitationsdetektion mittels Self-Sensing-Ultraschallwandler. Tm
- Technisches Messen, 82(2), 73–84. https://doi.org/10.1515/teme-2015-0017
bibtex: '@article{Bornmann_Hemsel_Sextro_Memoli_Hodnett_Zeqiri_2015, title={Kavitationsdetektion
mittels Self-Sensing-Ultraschallwandler}, volume={82}, DOI={10.1515/teme-2015-0017},
number={2}, journal={tm - Technisches Messen}, author={Bornmann, Peter and Hemsel,
Tobias and Sextro, Walter and Memoli, Gianluca and Hodnett, Mark and Zeqiri, Bajram},
year={2015}, pages={73–84} }'
chicago: 'Bornmann, Peter, Tobias Hemsel, Walter Sextro, Gianluca Memoli, Mark Hodnett,
and Bajram Zeqiri. “Kavitationsdetektion Mittels Self-Sensing-Ultraschallwandler.”
Tm - Technisches Messen 82, no. 2 (2015): 73–84. https://doi.org/10.1515/teme-2015-0017.'
ieee: P. Bornmann, T. Hemsel, W. Sextro, G. Memoli, M. Hodnett, and B. Zeqiri, “Kavitationsdetektion
mittels Self-Sensing-Ultraschallwandler,” tm - Technisches Messen, vol.
82, no. 2, pp. 73–84, 2015.
mla: Bornmann, Peter, et al. “Kavitationsdetektion Mittels Self-Sensing-Ultraschallwandler.”
Tm - Technisches Messen, vol. 82, no. 2, 2015, pp. 73–84, doi:10.1515/teme-2015-0017.
short: P. Bornmann, T. Hemsel, W. Sextro, G. Memoli, M. Hodnett, B. Zeqiri, Tm -
Technisches Messen 82 (2015) 73–84.
date_created: 2019-05-27T08:13:40Z
date_updated: 2019-09-16T10:44:38Z
department:
- _id: '151'
doi: 10.1515/teme-2015-0017
intvolume: ' 82'
issue: '2'
keyword:
- Kavitationsdetektion
- Self-Sensing
- So- nochemie
- Ultraschallwandler
language:
- iso: eng
page: 73-84
popular_science: '1'
publication: tm - Technisches Messen
status: public
title: Kavitationsdetektion mittels Self-Sensing-Ultraschallwandler
type: journal_article
user_id: '55222'
volume: 82
year: '2015'
...
---
_id: '9949'
abstract:
- lang: eng
text: Intelligent mechatronic systems other the possibility to adapt system behavior
to current dependability. This can be used to assure reliability by controlling
system behavior to reach a pre-defined lifetime. By using such closed loop control,
the margin of error of useful lifetime of an individual system is lowered. It
is also possible to change the pre-defined lifetime during operation, by adapting
system behavior to derate component usage. When planning maintenance actions,
the remaining useful lifetime of each individual system has to be taken into account.
Usually, stochastic properties of a fleet of systems are analyzed to create maintenance
plans. Among these, the main factor is the probability of an individual system
to last until maintenance. If condition-based maintenance is used, this is updated
for each individual system using available information about its current state.
By lowering the margin of error of useful lifetime, which directly corresponds
to the time until maintenance, extended maintenance periods are made possible.
Also using reliability-adaptive operation, a reversal of degradation driven maintenance
planning is possible where a maintenance plan is setup not only according to system
properties, but mainly to requirements imposed by maintenance personnel or infrastructure.
Each system then adapts its behavior accordingly and fails according to the maintenance
plan, making better use of maintenance personnel and system capabilities at the
same time. In this contribution, the potential of maintenance plan driven system
behavior adaptation is shown. A model including adaptation process and maintenance
actions is simulated over full system lifetime to assess the advantages gained.
author:
- first_name: Tobias
full_name: Meyer, Tobias
last_name: Meyer
- first_name: Thorben
full_name: Kaul, Thorben
id: '14802'
last_name: Kaul
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: 'Meyer T, Kaul T, Sextro W. Advantages of reliability-adaptive system operation
for maintenance planning. In: Proceedings of the 9th IFAC Symposium on Fault
Detection, Supervision and Safety for Technical Processes. ; 2015:940-945.
doi:10.1016/j.ifacol.2015.09.647'
apa: Meyer, T., Kaul, T., & Sextro, W. (2015). Advantages of reliability-adaptive
system operation for maintenance planning. In Proceedings of the 9th IFAC Symposium
on Fault Detection, Supervision and Safety for Technical Processes (pp. 940–945).
https://doi.org/10.1016/j.ifacol.2015.09.647
bibtex: '@inproceedings{Meyer_Kaul_Sextro_2015, title={Advantages of reliability-adaptive
system operation for maintenance planning}, DOI={10.1016/j.ifacol.2015.09.647},
booktitle={Proceedings of the 9th IFAC Symposium on Fault Detection, Supervision
and Safety for Technical Processes}, author={Meyer, Tobias and Kaul, Thorben and
Sextro, Walter}, year={2015}, pages={940–945} }'
chicago: Meyer, Tobias, Thorben Kaul, and Walter Sextro. “Advantages of Reliability-Adaptive
System Operation for Maintenance Planning.” In Proceedings of the 9th IFAC
Symposium on Fault Detection, Supervision and Safety for Technical Processes,
940–45, 2015. https://doi.org/10.1016/j.ifacol.2015.09.647.
ieee: T. Meyer, T. Kaul, and W. Sextro, “Advantages of reliability-adaptive system
operation for maintenance planning,” in Proceedings of the 9th IFAC Symposium
on Fault Detection, Supervision and Safety for Technical Processes, 2015,
pp. 940–945.
mla: Meyer, Tobias, et al. “Advantages of Reliability-Adaptive System Operation
for Maintenance Planning.” Proceedings of the 9th IFAC Symposium on Fault Detection,
Supervision and Safety for Technical Processes, 2015, pp. 940–45, doi:10.1016/j.ifacol.2015.09.647.
short: 'T. Meyer, T. Kaul, W. Sextro, in: Proceedings of the 9th IFAC Symposium
on Fault Detection, Supervision and Safety for Technical Processes, 2015, pp.
940–945.'
date_created: 2019-05-27T08:29:40Z
date_updated: 2019-09-16T10:43:42Z
department:
- _id: '151'
doi: 10.1016/j.ifacol.2015.09.647
keyword:
- Adaptive systems
- Reliability analysis
- Availability
- Adaptive control
- Maintenance
- Self-optimizing systems
- Self-optimizing control
- Stochastic Petri-nets
language:
- iso: eng
page: 940-945
publication: Proceedings of the 9th IFAC Symposium on Fault Detection, Supervision
and Safety for Technical Processes
quality_controlled: '1'
status: public
title: Advantages of reliability-adaptive system operation for maintenance planning
type: conference
user_id: '55222'
year: '2015'
...
---
_id: '29973'
abstract:
- lang: eng
text: 'Haushaltsgeräte aus der Klasse der "Weißen Ware" tragen mit etwa einem Drittel
($34,2%$ \citeBDEW2013) zum privaten Energieverbrauch bei. Diese Veröffentlichung
präsentiert eine Struktur und die dafür notwendige optimale Betriebsstrategie
für Weiße Ware in einer Umgebung mit Strompreisen, die wegen der Volatilität der
Regenerativen Energien stark fluktuieren. Das vorgeschlagene Konzept nutzt dafür
ein dezentrales Energiemanagementsystem, das über drei Hierarchieebenen verteilt
ist: die Geräteebene, die Haushaltsebene und die Ortsnetzebene. Auf der Geräteebene
nutzt dieses Konzept zusätzlich Betriebsflexibilitäten der Haushaltsgeräte aus.'
author:
- first_name: Karl Stephan Christian
full_name: Stille, Karl Stephan Christian
id: '30152'
last_name: Stille
orcid: 0000-0002-4212-6555
- first_name: Joachim
full_name: Böcker, Joachim
id: '66'
last_name: Böcker
orcid: 0000-0002-8480-7295
- first_name: Ralf
full_name: Bettentrup, Ralf
last_name: Bettentrup
- first_name: Ingo
full_name: Kaiser, Ingo
last_name: Kaiser
citation:
ama: 'Stille KSC, Böcker J, Bettentrup R, Kaiser I. Hierarchisches Optimierungskonzept
für die Laststeuerung von Haushaltsgeräten. In: ETG-Fachtagung “Von Smart Grids
Zu Smart Markets.” VDE; 2015.'
apa: Stille, K. S. C., Böcker, J., Bettentrup, R., & Kaiser, I. (2015). Hierarchisches
Optimierungskonzept für die Laststeuerung von Haushaltsgeräten. ETG-Fachtagung
“Von Smart Grids Zu Smart Markets.”
bibtex: '@inproceedings{Stille_Böcker_Bettentrup_Kaiser_2015, place={Kassel}, title={Hierarchisches
Optimierungskonzept für die Laststeuerung von Haushaltsgeräten}, booktitle={ETG-Fachtagung
“Von Smart Grids zu Smart Markets”}, publisher={VDE}, author={Stille, Karl Stephan
Christian and Böcker, Joachim and Bettentrup, Ralf and Kaiser, Ingo}, year={2015}
}'
chicago: 'Stille, Karl Stephan Christian, Joachim Böcker, Ralf Bettentrup, and Ingo
Kaiser. “Hierarchisches Optimierungskonzept Für Die Laststeuerung von Haushaltsgeräten.”
In ETG-Fachtagung “Von Smart Grids Zu Smart Markets.” Kassel: VDE, 2015.'
ieee: K. S. C. Stille, J. Böcker, R. Bettentrup, and I. Kaiser, “Hierarchisches
Optimierungskonzept für die Laststeuerung von Haushaltsgeräten,” 2015.
mla: Stille, Karl Stephan Christian, et al. “Hierarchisches Optimierungskonzept
Für Die Laststeuerung von Haushaltsgeräten.” ETG-Fachtagung “Von Smart Grids
Zu Smart Markets,” VDE, 2015.
short: 'K.S.C. Stille, J. Böcker, R. Bettentrup, I. Kaiser, in: ETG-Fachtagung “Von
Smart Grids Zu Smart Markets,” VDE, Kassel, 2015.'
date_created: 2022-02-23T09:24:36Z
date_updated: 2022-02-23T16:10:58Z
department:
- _id: '52'
keyword:
- Energy management
- hybrid energy storage system
- self-optimization
- multi-objective optimization
- adaptive systems
- pareto set
- SFB614-D1
- SFB614-D2
- LEA-Publikation
- Eigene
language:
- iso: eng
main_file_link:
- url: https://www.vde-verlag.de/proceedings-en/453897045.html
place: Kassel
publication: ETG-Fachtagung "Von Smart Grids zu Smart Markets"
publisher: VDE
status: public
title: Hierarchisches Optimierungskonzept für die Laststeuerung von Haushaltsgeräten
type: conference
user_id: '66'
year: '2015'
...
---
_id: '17661'
author:
- first_name: Thomas C.
full_name: King, Thomas C.
last_name: King
- first_name: Qingzhi
full_name: Liu, Qingzhi
last_name: Liu
- first_name: Gleb
full_name: Polevoy, Gleb
id: '83983'
last_name: Polevoy
- first_name: Mathijs
full_name: de Weerdt, Mathijs
last_name: de Weerdt
- first_name: Virginia
full_name: Dignum, Virginia
last_name: Dignum
- first_name: M. Birna
full_name: van Riemsdijk, M. Birna
last_name: van Riemsdijk
- first_name: Martijn
full_name: Warnier, Martijn
last_name: Warnier
citation:
ama: 'King TC, Liu Q, Polevoy G, et al. Request Driven Social Sensing. In: Proceedings
of the 2014 International Conference on Autonomous Agents and Multi-Agent Systems.
AAMAS ’14. Richland, SC: International Foundation for Autonomous Agents and Multiagent
Systems; 2014:1651-1652.'
apa: 'King, T. C., Liu, Q., Polevoy, G., de Weerdt, M., Dignum, V., van Riemsdijk,
M. B., & Warnier, M. (2014). Request Driven Social Sensing. In Proceedings
of the 2014 International Conference on Autonomous Agents and Multi-agent Systems
(pp. 1651–1652). Richland, SC: International Foundation for Autonomous Agents
and Multiagent Systems.'
bibtex: '@inproceedings{King_Liu_Polevoy_de Weerdt_Dignum_van Riemsdijk_Warnier_2014,
place={Richland, SC}, series={AAMAS ’14}, title={Request Driven Social Sensing},
booktitle={Proceedings of the 2014 International Conference on Autonomous Agents
and Multi-agent Systems}, publisher={International Foundation for Autonomous Agents
and Multiagent Systems}, author={King, Thomas C. and Liu, Qingzhi and Polevoy,
Gleb and de Weerdt, Mathijs and Dignum, Virginia and van Riemsdijk, M. Birna and
Warnier, Martijn}, year={2014}, pages={1651–1652}, collection={AAMAS ’14} }'
chicago: 'King, Thomas C., Qingzhi Liu, Gleb Polevoy, Mathijs de Weerdt, Virginia
Dignum, M. Birna van Riemsdijk, and Martijn Warnier. “Request Driven Social Sensing.”
In Proceedings of the 2014 International Conference on Autonomous Agents and
Multi-Agent Systems, 1651–52. AAMAS ’14. Richland, SC: International Foundation
for Autonomous Agents and Multiagent Systems, 2014.'
ieee: T. C. King et al., “Request Driven Social Sensing,” in Proceedings
of the 2014 International Conference on Autonomous Agents and Multi-agent Systems,
2014, pp. 1651–1652.
mla: King, Thomas C., et al. “Request Driven Social Sensing.” Proceedings of
the 2014 International Conference on Autonomous Agents and Multi-Agent Systems,
International Foundation for Autonomous Agents and Multiagent Systems, 2014, pp.
1651–52.
short: 'T.C. King, Q. Liu, G. Polevoy, M. de Weerdt, V. Dignum, M.B. van Riemsdijk,
M. Warnier, in: Proceedings of the 2014 International Conference on Autonomous
Agents and Multi-Agent Systems, International Foundation for Autonomous Agents
and Multiagent Systems, Richland, SC, 2014, pp. 1651–1652.'
date_created: 2020-08-06T15:21:45Z
date_updated: 2022-01-06T06:53:16Z
department:
- _id: '63'
- _id: '541'
extern: '1'
keyword:
- crowd-sensing
- crowdsourcing
- data aggregation
- game theory
- norms
- reciprocation
- self interested agents
- simulation
language:
- iso: eng
page: 1651-1652
place: Richland, SC
publication: Proceedings of the 2014 International Conference on Autonomous Agents
and Multi-agent Systems
publication_identifier:
isbn:
- 978-1-4503-2738-1
publisher: International Foundation for Autonomous Agents and Multiagent Systems
series_title: AAMAS '14
status: public
title: Request Driven Social Sensing
type: conference
user_id: '83983'
year: '2014'
...
---
_id: '9879'
abstract:
- lang: eng
text: Application of prognostics and health management (PHM) in the field of Proton
Exchange Membrane (PEM) fuel cells is emerging as an important tool in increasing
the reliability and availability of these systems. Though a lot of work is currently
being conducted to develop PHM systems for fuel cells, various challenges have
been encountered including the self-healing effect after characterization as well
as accelerated degradation due to dynamic loading, all which make RUL predictions
a difficult task. In this study, a prognostic approach based on adaptive particle
filter algorithm is proposed. The novelty of the proposed method lies in the introduction
of a self-healing factor after each characterization and the adaption of the degradation
model parameters to fit to the changing degradation trend. An ensemble of five
different state models based on weighted mean is then developed. The results show
that the method is effective in estimating the remaining useful life of PEM fuel
cells, with majority of the predictions falling within 5\% error. The method was
employed in the IEEE 2014 PHM Data Challenge and led to our team emerging the
winner of the RUL category of the challenge.
author:
- first_name: 'James Kuria '
full_name: 'Kimotho, James Kuria '
last_name: Kimotho
- first_name: Tobias
full_name: Meyer, Tobias
last_name: Meyer
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: 'Kimotho JK, Meyer T, Sextro W. PEM fuel cell prognostics using particle filter
with model parameter adaptation. In: Prognostics and Health Management (PHM),
2014 IEEE Conference On. ; 2014:1-6. doi:10.1109/ICPHM.2014.7036406'
apa: Kimotho, J. K., Meyer, T., & Sextro, W. (2014). PEM fuel cell prognostics
using particle filter with model parameter adaptation. In Prognostics and Health
Management (PHM), 2014 IEEE Conference on (pp. 1–6). https://doi.org/10.1109/ICPHM.2014.7036406
bibtex: '@inproceedings{Kimotho_Meyer_Sextro_2014, title={PEM fuel cell prognostics
using particle filter with model parameter adaptation}, DOI={10.1109/ICPHM.2014.7036406},
booktitle={Prognostics and Health Management (PHM), 2014 IEEE Conference on},
author={Kimotho, James Kuria and Meyer, Tobias and Sextro, Walter}, year={2014},
pages={1–6} }'
chicago: Kimotho, James Kuria , Tobias Meyer, and Walter Sextro. “PEM Fuel Cell
Prognostics Using Particle Filter with Model Parameter Adaptation.” In Prognostics
and Health Management (PHM), 2014 IEEE Conference On, 1–6, 2014. https://doi.org/10.1109/ICPHM.2014.7036406.
ieee: J. K. Kimotho, T. Meyer, and W. Sextro, “PEM fuel cell prognostics using particle
filter with model parameter adaptation,” in Prognostics and Health Management
(PHM), 2014 IEEE Conference on, 2014, pp. 1–6.
mla: Kimotho, James Kuria, et al. “PEM Fuel Cell Prognostics Using Particle Filter
with Model Parameter Adaptation.” Prognostics and Health Management (PHM),
2014 IEEE Conference On, 2014, pp. 1–6, doi:10.1109/ICPHM.2014.7036406.
short: 'J.K. Kimotho, T. Meyer, W. Sextro, in: Prognostics and Health Management
(PHM), 2014 IEEE Conference On, 2014, pp. 1–6.'
date_created: 2019-05-20T13:11:02Z
date_updated: 2019-05-20T13:12:27Z
department:
- _id: '151'
doi: 10.1109/ICPHM.2014.7036406
keyword:
- ageing
- particle filtering (numerical methods)
- proton exchange membrane fuel cells
- remaining life assessment
- PEM fuel cell prognostics
- PHM
- RUL predictions
- accelerated degradation
- adaptive particle filter algorithm
- dynamic loading
- model parameter adaptation
- prognostics and health management
- proton exchange membrane fuel cells
- remaining useful life estimation
- self-healing effect
- Adaptation models
- Data models
- Degradation
- Estimation
- Fuel cells
- Mathematical model
- Prognostics and health management
language:
- iso: eng
page: 1-6
publication: Prognostics and Health Management (PHM), 2014 IEEE Conference on
status: public
title: PEM fuel cell prognostics using particle filter with model parameter adaptation
type: conference
user_id: '55222'
year: '2014'
...
---
_id: '9884'
abstract:
- lang: eng
text: So-called reliability adaptive systems are able to adapt their system behavior
based on the current reliability of the system. This allows them to react to changed
operating conditions or faults within the system that change the degradation behavior.
To implement such reliability adaptation, self-optimization can be used. A self-optimizing
system pursues objectives, of which the priorities can be changed at runtime,
in turn changing the system behavior. When including system reliability as an
objective of the system, it becomes possible to change the system based on the
current reliability as well. This capability can be used to control the reliability
of the system throughout its operation period in order to achieve a pre-defined
or user-selectable system lifetime. This way, optimal planning of maintenance
intervals is possible while also using the system capabilities to their full extent.
Our proposed control system makes it possible to react to changed degradation
behavior by selecting objectives of the self-optimizing system and in turn changing
the operating parameters in a closed loop. A two-stage controller is designed
which is used to select the currently required priorities of the objectives in
order to fulfill the desired usable lifetime. Investigations using a model of
an automotive clutch system serve to demonstrate the feasibility of our controller.
It is shown that the desired lifetime can be achieved reliably.
author:
- first_name: Tobias
full_name: Meyer , Tobias
last_name: 'Meyer '
- first_name: Walter
full_name: Sextro, Walter
last_name: Sextro
citation:
ama: 'Meyer T, Sextro W. Closed-loop Control System for the Reliability of Intelligent
Mechatronic Systems. In: Proceedings of the Second European Conference of the
Prognostics and Health Management Society 2014. Vol 5. ; 2014.'
apa: Meyer , T., & Sextro, W. (2014). Closed-loop Control System for the Reliability
of Intelligent Mechatronic Systems. In Proceedings of the Second European Conference
of the Prognostics and Health Management Society 2014 (Vol. 5).
bibtex: '@inproceedings{Meyer _Sextro_2014, title={Closed-loop Control System for
the Reliability of Intelligent Mechatronic Systems}, volume={5}, booktitle={Proceedings
of the Second European Conference of the Prognostics and Health Management Society
2014}, author={Meyer , Tobias and Sextro, Walter}, year={2014} }'
chicago: Meyer , Tobias, and Walter Sextro. “Closed-Loop Control System for the
Reliability of Intelligent Mechatronic Systems.” In Proceedings of the Second
European Conference of the Prognostics and Health Management Society 2014,
Vol. 5, 2014.
ieee: T. Meyer and W. Sextro, “Closed-loop Control System for the Reliability of
Intelligent Mechatronic Systems,” in Proceedings of the Second European Conference
of the Prognostics and Health Management Society 2014, 2014, vol. 5.
mla: Meyer , Tobias, and Walter Sextro. “Closed-Loop Control System for the Reliability
of Intelligent Mechatronic Systems.” Proceedings of the Second European Conference
of the Prognostics and Health Management Society 2014, vol. 5, 2014.
short: 'T. Meyer , W. Sextro, in: Proceedings of the Second European Conference
of the Prognostics and Health Management Society 2014, 2014.'
date_created: 2019-05-20T13:18:20Z
date_updated: 2019-05-20T13:19:08Z
department:
- _id: '151'
intvolume: ' 5'
keyword:
- self-optimization reliability adaptive
language:
- iso: eng
publication: Proceedings of the Second European Conference of the Prognostics and
Health Management Society 2014
status: public
title: Closed-loop Control System for the Reliability of Intelligent Mechatronic Systems
type: conference
user_id: '55222'
volume: 5
year: '2014'
...
---
_id: '9885'
abstract:
- lang: eng
text: Intelligent mechatronic systems, such as self-optimizing systems, allow an
adaptation of the system behavior at runtime based on the current situation. To
do so, they generally select among several pre-defined working points. A common
method to determine working points for a mechatronic system is to use model-based
multiobjective optimization. It allows finding compromises among conflicting objectives,
called objective functions, by adapting parameters. To evaluate the system behavior
for different parameter sets, a model of the system behavior is included in the
objective functions and is evaluated during each function call. Intelligent mechatronic
systems also have the ability to adapt their behavior based on their current reliability,
thus increasing their availability, or on changed safety requirements; all of
which are summed up by the common term dependability. To allow this adaptation,
dependability can be considered in multiobjective optimization by including dependability-related
objective functions. However, whereas performance-related objective functions
are easily found, formulation of dependability-related objective functions is
highly system-specific and not intuitive, making it complex and error-prone. Since
each mechatronic system is different, individual failure modes have to be taken
into account, which need to be found using common methods such as Failure-Modes
and Effects Analysis or Fault Tree Analysis. Using component degradation models,
which again are specific to the system at hand, the main loading factors can be
determined. By including these in the model of the system behavior, the relation
between working point and dependability can be formulated as an objective function.
In our work, this approach is presented in more detail. It is exemplified using
an actively actuated single plate dry clutch system. Results show that this approach
is suitable for formulating dependability-related objective functions and that
these can be used to extend system lifetime by adapting system behavior.
author:
- first_name: Tobias
full_name: Meyer , Tobias
last_name: 'Meyer '
- first_name: Christoph
full_name: Sondermann-Wölke, Christoph
last_name: Sondermann-Wölke
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: Meyer T, Sondermann-Wölke C, Sextro W. Method to Identify Dependability Objectives
in Multiobjective Optimization Problem. Conference Proceedings of the 2nd International
Conference on System-Integrated Intelligence. 2014;15:46-53. doi:10.1016/j.protcy.2014.09.033
apa: Meyer , T., Sondermann-Wölke, C., & Sextro, W. (2014). Method to Identify
Dependability Objectives in Multiobjective Optimization Problem. Conference
Proceedings of the 2nd International Conference on System-Integrated Intelligence,
15, 46–53. https://doi.org/10.1016/j.protcy.2014.09.033
bibtex: '@article{Meyer _Sondermann-Wölke_Sextro_2014, title={Method to Identify
Dependability Objectives in Multiobjective Optimization Problem}, volume={15},
DOI={10.1016/j.protcy.2014.09.033},
journal={Conference Proceedings of the 2nd International Conference on System-Integrated
Intelligence}, author={Meyer , Tobias and Sondermann-Wölke, Christoph and Sextro,
Walter}, year={2014}, pages={46–53} }'
chicago: 'Meyer , Tobias, Christoph Sondermann-Wölke, and Walter Sextro. “Method
to Identify Dependability Objectives in Multiobjective Optimization Problem.”
Conference Proceedings of the 2nd International Conference on System-Integrated
Intelligence 15 (2014): 46–53. https://doi.org/10.1016/j.protcy.2014.09.033.'
ieee: T. Meyer , C. Sondermann-Wölke, and W. Sextro, “Method to Identify Dependability
Objectives in Multiobjective Optimization Problem,” Conference Proceedings
of the 2nd International Conference on System-Integrated Intelligence, vol.
15, pp. 46–53, 2014.
mla: Meyer , Tobias, et al. “Method to Identify Dependability Objectives in Multiobjective
Optimization Problem.” Conference Proceedings of the 2nd International Conference
on System-Integrated Intelligence, vol. 15, 2014, pp. 46–53, doi:10.1016/j.protcy.2014.09.033.
short: T. Meyer , C. Sondermann-Wölke, W. Sextro, Conference Proceedings of the
2nd International Conference on System-Integrated Intelligence 15 (2014) 46–53.
date_created: 2019-05-20T13:19:37Z
date_updated: 2019-09-16T10:22:04Z
department:
- _id: '151'
doi: 10.1016/j.protcy.2014.09.033
intvolume: ' 15'
keyword:
- Self-optimization
- multiobjective optimization
- objective function
- dependability
- intelligent system
- behavior adaptation
language:
- iso: eng
page: 46-53
publication: Conference Proceedings of the 2nd International Conference on System-Integrated
Intelligence
quality_controlled: '1'
status: public
title: Method to Identify Dependability Objectives in Multiobjective Optimization
Problem
type: journal_article
user_id: '55222'
volume: 15
year: '2014'
...
---
_id: '10677'
author:
- first_name: Nam
full_name: Ho, Nam
last_name: Ho
- first_name: Paul
full_name: Kaufmann, Paul
last_name: Kaufmann
- first_name: Marco
full_name: Platzner, Marco
id: '398'
last_name: Platzner
citation:
ama: 'Ho N, Kaufmann P, Platzner M. Towards self-adaptive caches: A run-time reconfigurable
multi-core infrastructure. In: 2014 {IEEE} Intl. Conf. on Evolvable Systems
(ICES). ; 2014:31-37. doi:10.1109/ICES.2014.7008719'
apa: 'Ho, N., Kaufmann, P., & Platzner, M. (2014). Towards self-adaptive caches:
A run-time reconfigurable multi-core infrastructure. In 2014 {IEEE} Intl. Conf.
on Evolvable Systems (ICES) (pp. 31–37). https://doi.org/10.1109/ICES.2014.7008719'
bibtex: '@inproceedings{Ho_Kaufmann_Platzner_2014, title={Towards self-adaptive
caches: A run-time reconfigurable multi-core infrastructure}, DOI={10.1109/ICES.2014.7008719},
booktitle={2014 {IEEE} Intl. Conf. on Evolvable Systems (ICES)}, author={Ho, Nam
and Kaufmann, Paul and Platzner, Marco}, year={2014}, pages={31–37} }'
chicago: 'Ho, Nam, Paul Kaufmann, and Marco Platzner. “Towards Self-Adaptive Caches:
A Run-Time Reconfigurable Multi-Core Infrastructure.” In 2014 {IEEE} Intl.
Conf. on Evolvable Systems (ICES), 31–37, 2014. https://doi.org/10.1109/ICES.2014.7008719.'
ieee: 'N. Ho, P. Kaufmann, and M. Platzner, “Towards self-adaptive caches: A run-time
reconfigurable multi-core infrastructure,” in 2014 {IEEE} Intl. Conf. on Evolvable
Systems (ICES), 2014, pp. 31–37.'
mla: 'Ho, Nam, et al. “Towards Self-Adaptive Caches: A Run-Time Reconfigurable Multi-Core
Infrastructure.” 2014 {IEEE} Intl. Conf. on Evolvable Systems (ICES), 2014,
pp. 31–37, doi:10.1109/ICES.2014.7008719.'
short: 'N. Ho, P. Kaufmann, M. Platzner, in: 2014 {IEEE} Intl. Conf. on Evolvable
Systems (ICES), 2014, pp. 31–37.'
date_created: 2019-07-10T11:23:00Z
date_updated: 2022-01-06T06:50:49Z
department:
- _id: '78'
doi: 10.1109/ICES.2014.7008719
keyword:
- Linux
- cache storage
- embedded systems
- granular computing
- multiprocessing systems
- reconfigurable architectures
- Leon3 SPARe processor
- custom logic events
- evolvable-self-adaptable processor cache
- fine granular profiling
- integer unit events
- measurement infrastructure
- microarchitectural events
- multicore embedded system
- perf_event standard Linux performance measurement interface
- processor properties
- run-time reconfigurable memory-to-cache address mapping engine
- run-time reconfigurable multicore infrastructure
- split-level caching
- Field programmable gate arrays
- Frequency locked loops
- Irrigation
- Phasor measurement units
- Registers
- Weaving
language:
- iso: eng
page: 31-37
publication: 2014 {IEEE} Intl. Conf. on Evolvable Systems (ICES)
status: public
title: 'Towards self-adaptive caches: A run-time reconfigurable multi-core infrastructure'
type: conference
user_id: '3118'
year: '2014'
...
---
_id: '13324'
abstract:
- lang: eng
text: 'The new technological enhancements and the accessibility to varieties of
online applications, enable users to collect personal data and perform self-evaluation
through test, comparison and experimentation. The sparked interest in numbers
and numbers as self-representative visualisations is prominent in social networking
sites, which are the empirical setting for the present study. This paper sets
out to establish a multi-theoretical framework which enables the investigation
of emerging phenomena of the role of numbers in social networking sites. The proposed
framework rests on three theoretical pillars: self-determination theory, heuristic
decision making and behavioural economics. A discussion departs from these convictions
to investigate user reactions and behaviour when faced with numerical representations
in the SNS.'
author:
- first_name: Mimmi
full_name: Sjöklint, Mimmi
last_name: Sjöklint
- first_name: Ioanna
full_name: Constantiou, Ioanna
last_name: Constantiou
- first_name: Matthias
full_name: Trier, Matthias
id: '72744'
last_name: Trier
citation:
ama: 'Sjöklint M, Constantiou I, Trier M. Numerical Representations and User Behaviour
in Social Networking Sites: Towards a Multi- Theoretical Research Framework. In:
ECIS 2013 Proceedings. Association for Information Systems. AIS Electronic
Library (AISeL); 2013.'
apa: 'Sjöklint, M., Constantiou, I., & Trier, M. (2013). Numerical Representations
and User Behaviour in Social Networking Sites: Towards a Multi- Theoretical Research
Framework. In ECIS 2013 Proceedings. Association for Information Systems.
AIS Electronic Library (AISeL).'
bibtex: '@inproceedings{Sjöklint_Constantiou_Trier_2013, title={Numerical Representations
and User Behaviour in Social Networking Sites: Towards a Multi- Theoretical Research
Framework}, booktitle={ECIS 2013 Proceedings}, publisher={Association for Information
Systems. AIS Electronic Library (AISeL)}, author={Sjöklint, Mimmi and Constantiou,
Ioanna and Trier, Matthias}, year={2013} }'
chicago: 'Sjöklint, Mimmi, Ioanna Constantiou, and Matthias Trier. “Numerical Representations
and User Behaviour in Social Networking Sites: Towards a Multi- Theoretical Research
Framework.” In ECIS 2013 Proceedings. Association for Information Systems.
AIS Electronic Library (AISeL), 2013.'
ieee: 'M. Sjöklint, I. Constantiou, and M. Trier, “Numerical Representations and
User Behaviour in Social Networking Sites: Towards a Multi- Theoretical Research
Framework,” in ECIS 2013 Proceedings, 2013.'
mla: 'Sjöklint, Mimmi, et al. “Numerical Representations and User Behaviour in Social
Networking Sites: Towards a Multi- Theoretical Research Framework.” ECIS 2013
Proceedings, Association for Information Systems. AIS Electronic Library (AISeL),
2013.'
short: 'M. Sjöklint, I. Constantiou, M. Trier, in: ECIS 2013 Proceedings, Association
for Information Systems. AIS Electronic Library (AISeL), 2013.'
date_created: 2019-09-19T12:14:55Z
date_updated: 2022-01-06T06:51:33Z
department:
- _id: '198'
keyword:
- User Behaviour
- Social Networking Sites
- Numerical Representations
- Multi-Theoretical Framework
- Quantified Self
- Pointification
language:
- iso: eng
publication: ECIS 2013 Proceedings
publication_identifier:
isbn:
- '9783834924421'
publisher: Association for Information Systems. AIS Electronic Library (AISeL)
status: public
title: 'Numerical Representations and User Behaviour in Social Networking Sites: Towards
a Multi- Theoretical Research Framework'
type: conference
user_id: '62809'
year: '2013'
...
---
_id: '11832'
abstract:
- lang: eng
text: In this paper we propose an approach to retrieve the absolute geometry of
an acoustic sensor network, consisting of spatially distributed microphone arrays,
from reverberant speech input. The calibration relies on direction of arrival
measurements of the individual arrays. The proposed calibration algorithm is derived
from a maximum-likelihood approach employing circular statistics. Since a sensor
node consists of a microphone array with known intra-array geometry, we are able
to obtain an absolute geometry estimate, including angles and distances. Simulation
results demonstrate the effectiveness of the approach.
author:
- first_name: Florian
full_name: Jacob, Florian
last_name: Jacob
- first_name: Joerg
full_name: Schmalenstroeer, Joerg
id: '460'
last_name: Schmalenstroeer
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: 'Jacob F, Schmalenstroeer J, Haeb-Umbach R. DoA-Based Microphone Array Position
Self-Calibration Using Circular Statistic. In: 38th International Conference
on Acoustics, Speech, and Signal Processing (ICASSP 2013). ; 2013:116-120.
doi:10.1109/ICASSP.2013.6637620'
apa: Jacob, F., Schmalenstroeer, J., & Haeb-Umbach, R. (2013). DoA-Based Microphone
Array Position Self-Calibration Using Circular Statistic. 38th International
Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013), 116–120.
https://doi.org/10.1109/ICASSP.2013.6637620
bibtex: '@inproceedings{Jacob_Schmalenstroeer_Haeb-Umbach_2013, title={DoA-Based
Microphone Array Position Self-Calibration Using Circular Statistic}, DOI={10.1109/ICASSP.2013.6637620},
booktitle={38th International Conference on Acoustics, Speech, and Signal Processing
(ICASSP 2013)}, author={Jacob, Florian and Schmalenstroeer, Joerg and Haeb-Umbach,
Reinhold}, year={2013}, pages={116–120} }'
chicago: Jacob, Florian, Joerg Schmalenstroeer, and Reinhold Haeb-Umbach. “DoA-Based
Microphone Array Position Self-Calibration Using Circular Statistic.” In 38th
International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013),
116–20, 2013. https://doi.org/10.1109/ICASSP.2013.6637620.
ieee: 'F. Jacob, J. Schmalenstroeer, and R. Haeb-Umbach, “DoA-Based Microphone Array
Position Self-Calibration Using Circular Statistic,” in 38th International
Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013), 2013,
pp. 116–120, doi: 10.1109/ICASSP.2013.6637620.'
mla: Jacob, Florian, et al. “DoA-Based Microphone Array Position Self-Calibration
Using Circular Statistic.” 38th International Conference on Acoustics, Speech,
and Signal Processing (ICASSP 2013), 2013, pp. 116–20, doi:10.1109/ICASSP.2013.6637620.
short: 'F. Jacob, J. Schmalenstroeer, R. Haeb-Umbach, in: 38th International Conference
on Acoustics, Speech, and Signal Processing (ICASSP 2013), 2013, pp. 116–120.'
date_created: 2019-07-12T05:29:07Z
date_updated: 2023-10-26T08:11:12Z
department:
- _id: '54'
doi: 10.1109/ICASSP.2013.6637620
keyword:
- Geometry calibration
- microphone arrays
- position self-calibration
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2013/JacSchHae_ICASSP2013_Rev2.pdf
oa: '1'
page: 116-120
publication: 38th International Conference on Acoustics, Speech, and Signal Processing
(ICASSP 2013)
publication_identifier:
issn:
- 1520-6149
quality_controlled: '1'
related_material:
link:
- description: Presentation
relation: supplementary_material
url: https://groups.uni-paderborn.de/nt/pubs/2013/JaScHa13_Presentation.pdf
status: public
title: DoA-Based Microphone Array Position Self-Calibration Using Circular Statistic
type: conference
user_id: '460'
year: '2013'
...
---
_id: '37109'
abstract:
- lang: eng
text: This study examines the effect of audit on private firms’ cost of debt. We
use a sample of 1,949 small private firms operating in the period 2006-2010 with
optional financial statement audit. High quality data allows us to construct a
more precise interest rate measure than existing studies employ. After controlling
for obvious sources of demand for voluntary audits (ownership complexity, subsidiary
status, bank relations), we find a robust central result that voluntary audits
increase rather than decrease the cost of debt financing, contrary to several
existing studies. This finding indicates that voluntary audits are generally treated
as “adopting a label” and penalised by creditors, regardless of the perceived
auditor quality as a result of the lemon problem in the audit market. Even Big-4
audits increase the cost of debt, likely as a result due to the lemon problem
in the audit market, although the increase is smaller than for non-Big-4 audits.
The results are sensitive to the estimation method used (OLS, Heckman’s two-step,
PSM) and (sub-)sample selection. We show that disregarding the underlying assumptions
of these estimation methods may lead to incorrect inferences. Additional analyses
show that audited firms’ reported earnings are less informative about future operating
performance than earnings of their unaudited counterparts. Our results also indicate
that results are sensitive to cost of debt definition and this might have affected
the results reported in the existing literature.
author:
- first_name: Urska
full_name: Kosi, Urska
id: '54068'
last_name: Kosi
- first_name: Jerney
full_name: Koren, Jerney
last_name: Koren
- first_name: Aljosa
full_name: Valentincic, Aljosa
last_name: Valentincic
citation:
ama: 'Kosi U, Koren J, Valentincic A. Does Financial Statement Audit Reduce the
Cost of Debt of Private Firms? In: ; 2013.'
apa: Kosi, U., Koren, J., & Valentincic, A. (2013). Does Financial Statement
Audit Reduce the Cost of Debt of Private Firms? 36th Annual Congress of European
Accounting Association, Paris, France.
bibtex: '@inproceedings{Kosi_Koren_Valentincic_2013, title={Does Financial Statement
Audit Reduce the Cost of Debt of Private Firms?}, author={Kosi, Urska and Koren,
Jerney and Valentincic, Aljosa}, year={2013} }'
chicago: Kosi, Urska, Jerney Koren, and Aljosa Valentincic. “Does Financial Statement
Audit Reduce the Cost of Debt of Private Firms?,” 2013.
ieee: U. Kosi, J. Koren, and A. Valentincic, “Does Financial Statement Audit Reduce
the Cost of Debt of Private Firms?,” presented at the 36th Annual Congress of
European Accounting Association, Paris, France, 2013.
mla: Kosi, Urska, et al. Does Financial Statement Audit Reduce the Cost of Debt
of Private Firms? 2013.
short: 'U. Kosi, J. Koren, A. Valentincic, in: 2013.'
conference:
end_date: 2013-05-05
location: Paris, France
name: 36th Annual Congress of European Accounting Association
start_date: 2013-05-02
date_created: 2023-01-17T13:25:30Z
date_updated: 2023-01-17T13:51:24Z
department:
- _id: '635'
- _id: '186'
- _id: '551'
extern: '1'
keyword:
- private firms
- voluntary audit
- cost of debt
- self-selection bias
- lemon problem
language:
- iso: eng
main_file_link:
- url: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=2373987
status: public
title: Does Financial Statement Audit Reduce the Cost of Debt of Private Firms?
type: conference
user_id: '88603'
year: '2013'
...