---
_id: '33997'
abstract:
- lang: eng
text: "Digital platforms have already led to disruptions in multiple B2C markets
and are becoming increasingly dominant in B2B markets. As a result, more and more
companies are trying to participate in the platform economy. However, the successful
development and operation of a digital platform is associated with significant
challenges, which leads to 85% of all platforms failing. A core challenge is the
dynamic nature of the platform economy, with varying strategic objectives at different
stages in the platform lifecycle. Platform operators must continuously monitor
platform progress and adjust their strategy.\r\nUtilizing action research in the
real-world platform project AI Marketplace, we developed a lifecycle-oriented
performance management approach for digital platforms in B2B markets. It enables
platform operators to reflect on their position in the platform lifecycle, derive
relevant strategic objectives, and monitor them with suitable key performance
indicators. Hence, allowing them to secure the long-term success of their platform
business."
author:
- first_name: Leon
full_name: Özcan, Leon
id: '45137'
last_name: Özcan
- first_name: Lisa
full_name: Kirchberg, Lisa
last_name: Kirchberg
- first_name: Christian
full_name: Koldewey, Christian
last_name: Koldewey
- first_name: Roman
full_name: Dumitrescu, Roman
last_name: Dumitrescu
citation:
ama: 'Özcan L, Kirchberg L, Koldewey C, Dumitrescu R. Performance Management Approach
for Digital Platforms in B2B Markets. In: Bitran I, Bitetti L, Conn S, et al.,
eds. The Role of Innovation: Past, Present, Future. ; 2022.'
apa: 'Özcan, L., Kirchberg, L., Koldewey, C., & Dumitrescu, R. (2022). Performance
Management Approach for Digital Platforms in B2B Markets. In I. Bitran, L. Bitetti,
S. Conn, J. Fishburn, E. Huizingh, M. Torkkeli, & J. Yang (Eds.), The
Role of Innovation: Past, Present, Future.'
bibtex: '@inproceedings{Özcan_Kirchberg_Koldewey_Dumitrescu_2022, place={Athens},
title={Performance Management Approach for Digital Platforms in B2B Markets},
booktitle={The Role of Innovation: Past, Present, Future}, author={Özcan, Leon
and Kirchberg, Lisa and Koldewey, Christian and Dumitrescu, Roman}, editor={Bitran,
Iain and Bitetti, Leandro and Conn, Steffen and Fishburn, Jessica and Huizingh,
Eelko and Torkkeli, Marko and Yang, Jialei}, year={2022} }'
chicago: 'Özcan, Leon, Lisa Kirchberg, Christian Koldewey, and Roman Dumitrescu.
“Performance Management Approach for Digital Platforms in B2B Markets.” In The
Role of Innovation: Past, Present, Future, edited by Iain Bitran, Leandro
Bitetti, Steffen Conn, Jessica Fishburn, Eelko Huizingh, Marko Torkkeli, and
Jialei Yang. Athens, 2022.'
ieee: 'L. Özcan, L. Kirchberg, C. Koldewey, and R. Dumitrescu, “Performance Management
Approach for Digital Platforms in B2B Markets,” in The Role of Innovation:
Past, Present, Future, Athens, 2022.'
mla: 'Özcan, Leon, et al. “Performance Management Approach for Digital Platforms
in B2B Markets.” The Role of Innovation: Past, Present, Future, edited
by Iain Bitran et al., 2022.'
short: 'L. Özcan, L. Kirchberg, C. Koldewey, R. Dumitrescu, in: I. Bitran, L. Bitetti,
S. Conn, J. Fishburn, E. Huizingh, M. Torkkeli, J. Yang (Eds.), The Role of Innovation:
Past, Present, Future, Athens, 2022.'
conference:
end_date: 2022-11-30
location: Athens
name: ISPIM Connects Athens
start_date: 2022-11-28
date_created: 2022-11-04T07:31:57Z
date_updated: 2022-11-04T07:33:54Z
ddc:
- '600'
department:
- _id: '563'
editor:
- first_name: Iain
full_name: Bitran, Iain
last_name: Bitran
- first_name: Leandro
full_name: Bitetti, Leandro
last_name: Bitetti
- first_name: Steffen
full_name: ' Conn, Steffen'
last_name: ' Conn'
- first_name: Jessica
full_name: Fishburn, Jessica
last_name: Fishburn
- first_name: 'Eelko '
full_name: 'Huizingh, Eelko '
last_name: Huizingh
- first_name: Marko
full_name: Torkkeli, Marko
last_name: Torkkeli
- first_name: Jialei
full_name: Yang, Jialei
last_name: Yang
file:
- access_level: closed
content_type: application/pdf
creator: loezcan
date_created: 2022-11-04T07:30:29Z
date_updated: 2022-11-04T07:30:29Z
file_id: '33998'
file_name: '[ÖKK+22] Performance Management Approach for Digital Platforms in B2B
Markets.pdf'
file_size: 694337
relation: main_file
success: 1
file_date_updated: 2022-11-04T07:30:29Z
has_accepted_license: '1'
keyword:
- Digital Platform
- Two-Sided Market
- Multi-Sided Market
- Platform Lifecycle
- Platform Monitoring
- Performance Management
language:
- iso: eng
place: Athens
publication: 'The Role of Innovation: Past, Present, Future'
publication_identifier:
unknown:
- 978-952-65069-1-3
status: public
title: Performance Management Approach for Digital Platforms in B2B Markets
type: conference
user_id: '45137'
year: '2022'
...
---
_id: '32416'
abstract:
- lang: eng
text: In recent years, sequence-defined oligomers (SDOs) gained increasing interest
due to their perfectly controlled molecular structure, thus providing defined
properties. In order to tune the properties, different functionalities need to
be incorporated into the oligomers and the chain tacticity needs to be controlled.
Beside the synthesis of SDOs, suitable methods need to be found to analyze the
molecular structure. In this work, oligomers exhibiting an alternating or block-wise
sequence of side chain functionalities were analyzed using a hyphenation of ultra-high-performance
liquid chromatography and electrospray ionization mass spectrometry enhanced by
ion mobility separation (IMS). Moieties in the side chains were varied according
to polarity and bulkiness. Moreover, chain tacticity was varied. Drift times in
the IMS cell and the corresponding collision cross section (CCS) values were shown
to be individual parameters allowing the identification of SDOs, even in the case
that SDO structures only differ in sequence or tacticity of side chain functionalities.
Thus, a library of CCS values was obtained as reference used for the analysis
of complex mixtures of SDOs.
article_type: original
author:
- first_name: Marie-Theres
full_name: Berg, Marie-Theres
last_name: Berg
- first_name: Artjom
full_name: Herberg, Artjom
id: '94'
last_name: Herberg
- first_name: Dirk
full_name: Kuckling, Dirk
id: '287'
last_name: Kuckling
citation:
ama: Berg M-T, Herberg A, Kuckling D. Hyphenation of ultra-high-performance liquid
chromatography and ion mobility mass spectrometry for the analysis of sequence-defined
oligomers with different functionalities and tacticity. International Journal
of Polymer Analysis and Characterization. Published online 2022:1-12. doi:10.1080/1023666x.2022.2100968
apa: Berg, M.-T., Herberg, A., & Kuckling, D. (2022). Hyphenation of ultra-high-performance
liquid chromatography and ion mobility mass spectrometry for the analysis of sequence-defined
oligomers with different functionalities and tacticity. International Journal
of Polymer Analysis and Characterization, 1–12. https://doi.org/10.1080/1023666x.2022.2100968
bibtex: '@article{Berg_Herberg_Kuckling_2022, title={Hyphenation of ultra-high-performance
liquid chromatography and ion mobility mass spectrometry for the analysis of sequence-defined
oligomers with different functionalities and tacticity}, DOI={10.1080/1023666x.2022.2100968},
journal={International Journal of Polymer Analysis and Characterization}, publisher={Informa
UK Limited}, author={Berg, Marie-Theres and Herberg, Artjom and Kuckling, Dirk},
year={2022}, pages={1–12} }'
chicago: Berg, Marie-Theres, Artjom Herberg, and Dirk Kuckling. “Hyphenation of
Ultra-High-Performance Liquid Chromatography and Ion Mobility Mass Spectrometry
for the Analysis of Sequence-Defined Oligomers with Different Functionalities
and Tacticity.” International Journal of Polymer Analysis and Characterization,
2022, 1–12. https://doi.org/10.1080/1023666x.2022.2100968.
ieee: 'M.-T. Berg, A. Herberg, and D. Kuckling, “Hyphenation of ultra-high-performance
liquid chromatography and ion mobility mass spectrometry for the analysis of sequence-defined
oligomers with different functionalities and tacticity,” International Journal
of Polymer Analysis and Characterization, pp. 1–12, 2022, doi: 10.1080/1023666x.2022.2100968.'
mla: Berg, Marie-Theres, et al. “Hyphenation of Ultra-High-Performance Liquid Chromatography
and Ion Mobility Mass Spectrometry for the Analysis of Sequence-Defined Oligomers
with Different Functionalities and Tacticity.” International Journal of Polymer
Analysis and Characterization, Informa UK Limited, 2022, pp. 1–12, doi:10.1080/1023666x.2022.2100968.
short: M.-T. Berg, A. Herberg, D. Kuckling, International Journal of Polymer Analysis
and Characterization (2022) 1–12.
date_created: 2022-07-26T06:38:52Z
date_updated: 2023-01-10T08:14:52Z
department:
- _id: '163'
doi: 10.1080/1023666x.2022.2100968
keyword:
- Ultra-high-performance liquid chromatography
- ion mobility separation
- mass spectrometry
- LC-MS hyphenation
- sequence-defined oligomers
language:
- iso: eng
page: 1-12
publication: International Journal of Polymer Analysis and Characterization
publication_identifier:
issn:
- 1023-666X
- 1563-5341
publication_status: published
publisher: Informa UK Limited
status: public
title: Hyphenation of ultra-high-performance liquid chromatography and ion mobility
mass spectrometry for the analysis of sequence-defined oligomers with different
functionalities and tacticity
type: journal_article
user_id: '94'
year: '2022'
...
---
_id: '44529'
abstract:
- lang: eng
text: "According to the German Rectors’ Conference (HRK), German higher education
teaching fails to\r\nmeet the demand to integrate competence-oriented learning
objectives. Despite a wide-ranging debate on the use of learning objectives, empirical
research on their effectiveness is scarce. The present study uses the features
of digital teaching platforms to investigate the perception and effectiveness
of learning objectives applying a randomised controlled experiment followed by
a survey in a course for undergraduate economics students (N = 30). Controlling
group preconditions and the treatment effect allows to draw conclusions about
the different learning outcomes of the student groups. The specification of behaviour-oriented
learning objectives in the online course system leads to significantly better
performance in the treatment group. A stronger perception of the learning objectives
in the treatment group supports this effect that remains significant in a regression
analysis. Thus, the study provides an empirical justification to integrate learning
objectives in university teaching."
article_type: original
author:
- first_name: Thorsten Fabian
full_name: Auer, Thorsten Fabian
id: '49071'
last_name: Auer
citation:
ama: Auer TF. Die Wirksamkeit von Lernzielen für Studienleistungen – eine experimentelle
Studie. die hochschullehre. 2022;8(1):662-675. doi:http://doi.org/10.3278/HSL2248W
apa: Auer, T. F. (2022). Die Wirksamkeit von Lernzielen für Studienleistungen –
eine experimentelle Studie. die hochschullehre, 8(1), 662–675. https://doi.org/10.3278/HSL2248W
bibtex: '@article{Auer_2022, title={Die Wirksamkeit von Lernzielen für Studienleistungen
– eine experimentelle Studie}, volume={8}, DOI={http://doi.org/10.3278/HSL2248W},
number={1}, journal={die hochschullehre}, author={Auer, Thorsten Fabian}, year={2022},
pages={662–675} }'
chicago: 'Auer, Thorsten Fabian. “Die Wirksamkeit von Lernzielen für Studienleistungen
– eine experimentelle Studie.” die hochschullehre 8, no. 1 (2022): 662–75.
https://doi.org/10.3278/HSL2248W.'
ieee: 'T. F. Auer, “Die Wirksamkeit von Lernzielen für Studienleistungen – eine
experimentelle Studie,” die hochschullehre, vol. 8, no. 1, pp. 662–675,
2022, doi: http://doi.org/10.3278/HSL2248W.'
mla: Auer, Thorsten Fabian. “Die Wirksamkeit von Lernzielen für Studienleistungen
– eine experimentelle Studie.” die hochschullehre, vol. 8, no. 1, 2022,
pp. 662–75, doi:http://doi.org/10.3278/HSL2248W.
short: T.F. Auer, die hochschullehre 8 (2022) 662–675.
date_created: 2023-05-05T17:19:24Z
date_updated: 2023-11-23T08:06:46Z
department:
- _id: '178'
- _id: '184'
doi: http://doi.org/10.3278/HSL2248W
intvolume: ' 8'
issue: '1'
keyword:
- learning objectives
- academic performance
- perception
- teaching methods
- experiment
language:
- iso: ger
main_file_link:
- open_access: '1'
url: https://die-hochschullehre.de/articles/abstract/10.3278/HSL2248W/#downloads
oa: '1'
page: 662-675
publication: die hochschullehre
publication_identifier:
issn:
- 2199-8825
publication_status: published
quality_controlled: '1'
status: public
title: Die Wirksamkeit von Lernzielen für Studienleistungen – eine experimentelle
Studie
type: journal_article
user_id: '49071'
volume: 8
year: '2022'
...
---
_id: '48882'
abstract:
- lang: eng
text: In multimodal multi-objective optimization (MMMOO), the focus is not solely
on convergence in objective space, but rather also on explicitly ensuring diversity
in decision space. We illustrate why commonly used diversity measures are not
entirely appropriate for this task and propose a sophisticated basin-based evaluation
(BBE) method. Also, BBE variants are developed, capturing the anytime behavior
of algorithms. The set of BBE measures is tested by means of an algorithm configuration
study. We show that these new measures also transfer properties of the well-established
hypervolume (HV) indicator to the domain of MMMOO, thus also accounting for objective
space convergence. Moreover, we advance MMMOO research by providing insights into
the multimodal performance of the considered algorithms. Specifically, algorithms
exploiting local structures are shown to outperform classical evolutionary multi-objective
optimizers regarding the BBE variants and respective trade-off with HV.
author:
- first_name: Jonathan
full_name: Heins, Jonathan
last_name: Heins
- first_name: Jeroen
full_name: Rook, Jeroen
last_name: Rook
- first_name: Lennart
full_name: Schäpermeier, Lennart
last_name: Schäpermeier
- first_name: Pascal
full_name: Kerschke, Pascal
last_name: Kerschke
- first_name: Jakob
full_name: Bossek, Jakob
id: '102979'
last_name: Bossek
orcid: 0000-0002-4121-4668
- first_name: Heike
full_name: Trautmann, Heike
last_name: Trautmann
citation:
ama: 'Heins J, Rook J, Schäpermeier L, Kerschke P, Bossek J, Trautmann H. BBE: Basin-Based
Evaluation of Multimodal Multi-objective Optimization Problems. In: Rudolph G,
Kononova AV, Aguirre H, Kerschke P, Ochoa G, Tusar T, eds. Parallel Problem
Solving from Nature (PPSN XVII). Lecture Notes in Computer Science. Springer
International Publishing; 2022:192–206. doi:10.1007/978-3-031-14714-2_14'
apa: 'Heins, J., Rook, J., Schäpermeier, L., Kerschke, P., Bossek, J., & Trautmann,
H. (2022). BBE: Basin-Based Evaluation of Multimodal Multi-objective Optimization
Problems. In G. Rudolph, A. V. Kononova, H. Aguirre, P. Kerschke, G. Ochoa, &
T. Tusar (Eds.), Parallel Problem Solving from Nature (PPSN XVII) (pp.
192–206). Springer International Publishing. https://doi.org/10.1007/978-3-031-14714-2_14'
bibtex: '@inproceedings{Heins_Rook_Schäpermeier_Kerschke_Bossek_Trautmann_2022,
place={Cham}, series={Lecture Notes in Computer Science}, title={BBE: Basin-Based
Evaluation of Multimodal Multi-objective Optimization Problems}, DOI={10.1007/978-3-031-14714-2_14},
booktitle={Parallel Problem Solving from Nature (PPSN XVII)}, publisher={Springer
International Publishing}, author={Heins, Jonathan and Rook, Jeroen and Schäpermeier,
Lennart and Kerschke, Pascal and Bossek, Jakob and Trautmann, Heike}, editor={Rudolph,
Günter and Kononova, Anna V. and Aguirre, Hernán and Kerschke, Pascal and Ochoa,
Gabriela and Tusar, Tea}, year={2022}, pages={192–206}, collection={Lecture Notes
in Computer Science} }'
chicago: 'Heins, Jonathan, Jeroen Rook, Lennart Schäpermeier, Pascal Kerschke, Jakob
Bossek, and Heike Trautmann. “BBE: Basin-Based Evaluation of Multimodal Multi-Objective
Optimization Problems.” In Parallel Problem Solving from Nature (PPSN XVII),
edited by Günter Rudolph, Anna V. Kononova, Hernán Aguirre, Pascal Kerschke, Gabriela
Ochoa, and Tea Tusar, 192–206. Lecture Notes in Computer Science. Cham: Springer
International Publishing, 2022. https://doi.org/10.1007/978-3-031-14714-2_14.'
ieee: 'J. Heins, J. Rook, L. Schäpermeier, P. Kerschke, J. Bossek, and H. Trautmann,
“BBE: Basin-Based Evaluation of Multimodal Multi-objective Optimization Problems,”
in Parallel Problem Solving from Nature (PPSN XVII), 2022, pp. 192–206,
doi: 10.1007/978-3-031-14714-2_14.'
mla: 'Heins, Jonathan, et al. “BBE: Basin-Based Evaluation of Multimodal Multi-Objective
Optimization Problems.” Parallel Problem Solving from Nature (PPSN XVII),
edited by Günter Rudolph et al., Springer International Publishing, 2022, pp.
192–206, doi:10.1007/978-3-031-14714-2_14.'
short: 'J. Heins, J. Rook, L. Schäpermeier, P. Kerschke, J. Bossek, H. Trautmann,
in: G. Rudolph, A.V. Kononova, H. Aguirre, P. Kerschke, G. Ochoa, T. Tusar (Eds.),
Parallel Problem Solving from Nature (PPSN XVII), Springer International Publishing,
Cham, 2022, pp. 192–206.'
date_created: 2023-11-14T15:58:58Z
date_updated: 2023-12-13T10:47:50Z
department:
- _id: '819'
doi: 10.1007/978-3-031-14714-2_14
editor:
- first_name: Günter
full_name: Rudolph, Günter
last_name: Rudolph
- first_name: Anna V.
full_name: Kononova, Anna V.
last_name: Kononova
- first_name: Hernán
full_name: Aguirre, Hernán
last_name: Aguirre
- first_name: Pascal
full_name: Kerschke, Pascal
last_name: Kerschke
- first_name: Gabriela
full_name: Ochoa, Gabriela
last_name: Ochoa
- first_name: Tea
full_name: Tusar, Tea
last_name: Tusar
extern: '1'
keyword:
- Anytime behavior
- Benchmarking
- Continuous optimization
- Multi-objective optimization
- Multimodality
- Performance metric
language:
- iso: eng
page: 192–206
place: Cham
publication: Parallel Problem Solving from Nature (PPSN XVII)
publication_identifier:
isbn:
- 978-3-031-14714-2
publisher: Springer International Publishing
series_title: Lecture Notes in Computer Science
status: public
title: 'BBE: Basin-Based Evaluation of Multimodal Multi-objective Optimization Problems'
type: conference
user_id: '102979'
year: '2022'
...
---
_id: '24550'
abstract:
- lang: eng
text: "Efficiencies and energy yields of microinverters available on the market
during 2014‒2021 have been \r\nmeasured, compared, and ranked. Conversion efficiencies
as a function of load have been measured indoors with high \r\naccuracy and ranked
according to Euro- and CEC weightings. Energy yields have been measured outdoors
via \r\nidentical and calibrated crystalline silicon PV modules of 215 Wp (until
2020) and 360 Wp (starting 2021). Inverters \r\nwith two inputs have been fed
by two of those modules. DC input, AC power output and energy yield of each micro\x02inverter
have been recorded by individual calibrated electricity meters. CEC and EU efficiency
rankings have been \r\ncomputed and compared. To assess the influence of PV module
size, two extremes have been investigated: A rather \r\nsmall module with 215
Wp - as it has been used 10 years ago, and a brand-new module (2021) offering
360 Wp. Both \r\ntypes of modules contain 60 solar cells in series connection.
Appling the low-power modules, the challenge for the \r\ndifferent micro-inverters
has been during weak-light conditions, using the high-power modules, some inverters
\r\ntemporarily reach their power limits and yield is reduced. A method using
a reference configuration of inverter & \r\nmodule and a linear equation y = ax
+ b resulting in the actual yield, any module & inverter configuration can be
\r\ncharacterized by just the coefficients a and b."
author:
- first_name: Stefan
full_name: Krauter, Stefan
id: '28836'
last_name: Krauter
orcid: 0000-0002-3594-260X
- first_name: Jörg
full_name: Bendfeld, Jörg
id: '16148'
last_name: Bendfeld
citation:
ama: 'Krauter S, Bendfeld J. Module-Inverters (Microinverters): Influence of Module
Size on Conversion Efficiencies and Energy Yields. In: Proceedings of the 38th
European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021).
; 2021:659-663. doi:10.4229/EUPVSEC20212021-4CO.3.4'
apa: 'Krauter, S., & Bendfeld, J. (2021). Module-Inverters (Microinverters):
Influence of Module Size on Conversion Efficiencies and Energy Yields. Proceedings
of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC
2021), 659–663. https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4'
bibtex: '@inproceedings{Krauter_Bendfeld_2021, title={Module-Inverters (Microinverters):
Influence of Module Size on Conversion Efficiencies and Energy Yields}, DOI={10.4229/EUPVSEC20212021-4CO.3.4},
booktitle={Proceedings of the 38th European Photovoltaic Solar Energy Conference
and Exhibition (EU PVSEC 2021)}, author={Krauter, Stefan and Bendfeld, Jörg},
year={2021}, pages={659–663} }'
chicago: 'Krauter, Stefan, and Jörg Bendfeld. “Module-Inverters (Microinverters):
Influence of Module Size on Conversion Efficiencies and Energy Yields.” In Proceedings
of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC
2021), 659–63, 2021. https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4.'
ieee: 'S. Krauter and J. Bendfeld, “Module-Inverters (Microinverters): Influence
of Module Size on Conversion Efficiencies and Energy Yields,” in Proceedings
of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC
2021), 2021, pp. 659–663, doi: 10.4229/EUPVSEC20212021-4CO.3.4.'
mla: 'Krauter, Stefan, and Jörg Bendfeld. “Module-Inverters (Microinverters): Influence
of Module Size on Conversion Efficiencies and Energy Yields.” Proceedings of
the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC
2021), 2021, pp. 659–63, doi:10.4229/EUPVSEC20212021-4CO.3.4.'
short: 'S. Krauter, J. Bendfeld, in: Proceedings of the 38th European Photovoltaic
Solar Energy Conference and Exhibition (EU PVSEC 2021), 2021, pp. 659–663.'
conference:
end_date: 2021-09-10
name: 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC
2021)
start_date: 2021-09-06
date_created: 2021-09-16T10:17:11Z
date_updated: 2022-01-06T13:22:03Z
ddc:
- '620'
department:
- _id: '53'
doi: 10.4229/EUPVSEC20212021-4CO.3.4
file:
- access_level: closed
content_type: application/pdf
creator: krauter
date_created: 2022-01-06T13:20:31Z
date_updated: 2022-01-06T13:20:31Z
file_id: '29175'
file_name: Krauter Bendfeld - Module size Microinverters - EUPVSEC 2021.pdf
file_size: 5413518
relation: main_file
success: 1
file_date_updated: 2022-01-06T13:20:31Z
has_accepted_license: '1'
keyword:
- AC-modules
- Microinverter
- Power Conditioning
- Efficiency
- Yield
- PV module size
- saturation
- performance
language:
- iso: eng
page: 659 - 663
publication: Proceedings of the 38th European Photovoltaic Solar Energy Conference
and Exhibition (EU PVSEC 2021)
publication_identifier:
isbn:
- 3-936338-78-7
publication_status: published
quality_controlled: '1'
status: public
title: 'Module-Inverters (Microinverters): Influence of Module Size on Conversion
Efficiencies and Energy Yields'
type: conference
user_id: '28836'
year: '2021'
...
---
_id: '18387'
abstract:
- lang: eng
text: " During comparative measurements of different PV microinverters, two yield
issues came up that could \r\nnot be explored via conventional efficiency measurements,
but do have a significant impact on electrical energy \r\nyield: First category
of issues are either sluggish or nervously acting maximum–power–point–tracking
devices, which \r\nlead to reduced energy yields. The other category of issues
is thermal: As a first explanation for observed reduced \r\nenergy yields, it
has been assumed that the conversion efficiency degrades at higher operating temperatures.
This \r\nmatter has been investigated in this article: A change in conversion
efficiency could not be observed for elevated \r\noperation temperatures up to
50°C, despite high-precision and repeated measurements. But it was found that
some \r\ninverters temporarily interrupted (or entirely stopped) operation after
long periods of running at high temperatures. \r\nAlso, a reduction in potential
maximum power output has been detected for those inverters. Summarizing: With
a \r\nhigh degree of certainty it can be stated that those reported yield losses
have been caused by the temporary shutdowns \r\nand power limitations of the inverters."
author:
- first_name: Stefan
full_name: Krauter, Stefan
id: '28836'
last_name: Krauter
orcid: 0000-0002-3594-260X
- first_name: Jörg
full_name: Bendfeld, Jörg
id: '16148'
last_name: Bendfeld
citation:
ama: 'Krauter S, Bendfeld J. Elevated Temperatures Affecting Efficiency, Overall
Performance and Energy Yield of PV Microinverters. In: Proceedings of the EU
PVSEC 2020 . ; 2020:1179-1180. doi:10.4229/EUPVSEC20202020-4AV.3.6'
apa: Krauter, S., & Bendfeld, J. (2020). Elevated Temperatures Affecting Efficiency,
Overall Performance and Energy Yield of PV Microinverters. Proceedings of the
EU PVSEC 2020 , 1179–1180. https://doi.org/10.4229/EUPVSEC20202020-4AV.3.6
bibtex: '@inproceedings{Krauter_Bendfeld_2020, title={Elevated Temperatures Affecting
Efficiency, Overall Performance and Energy Yield of PV Microinverters}, DOI={10.4229/EUPVSEC20202020-4AV.3.6},
booktitle={Proceedings of the EU PVSEC 2020 }, author={Krauter, Stefan and Bendfeld,
Jörg}, year={2020}, pages={1179–1180} }'
chicago: Krauter, Stefan, and Jörg Bendfeld. “Elevated Temperatures Affecting Efficiency,
Overall Performance and Energy Yield of PV Microinverters.” In Proceedings
of the EU PVSEC 2020 , 1179–80, 2020. https://doi.org/10.4229/EUPVSEC20202020-4AV.3.6.
ieee: 'S. Krauter and J. Bendfeld, “Elevated Temperatures Affecting Efficiency,
Overall Performance and Energy Yield of PV Microinverters,” in Proceedings
of the EU PVSEC 2020 , online, 2020, pp. 1179–1180, doi: 10.4229/EUPVSEC20202020-4AV.3.6.'
mla: Krauter, Stefan, and Jörg Bendfeld. “Elevated Temperatures Affecting Efficiency,
Overall Performance and Energy Yield of PV Microinverters.” Proceedings of
the EU PVSEC 2020 , 2020, pp. 1179–80, doi:10.4229/EUPVSEC20202020-4AV.3.6.
short: 'S. Krauter, J. Bendfeld, in: Proceedings of the EU PVSEC 2020 , 2020, pp.
1179–1180.'
conference:
end_date: 2020-09-11
location: online
name: EU PVSEC 2020, 37th EU Photovoltaik Solar Energy Conference
start_date: 2020-09-07
date_created: 2020-08-27T06:26:25Z
date_updated: 2022-01-06T12:32:47Z
ddc:
- '620'
department:
- _id: '53'
doi: 10.4229/EUPVSEC20202020-4AV.3.6
file:
- access_level: closed
content_type: application/pdf
creator: krauter
date_created: 2022-01-06T12:27:02Z
date_updated: 2022-01-06T12:27:02Z
file_id: '29171'
file_name: Krauter Bendfeld - Microinverters at elevated temperatures EUPVSEC 2020.pdf
file_size: 599660
relation: main_file
success: 1
file_date_updated: 2022-01-06T12:27:02Z
has_accepted_license: '1'
jel:
- Q42
keyword:
- AC-modules
- Microinverter
- Power Conditioning
- Thermal Performance
- Ventilation
- Stability
- Efficiency
- Yield
language:
- iso: eng
page: 1179 - 1180
publication: 'Proceedings of the EU PVSEC 2020 '
publication_identifier:
issn:
- 3-936338-73-6
publication_status: published
quality_controlled: '1'
status: public
title: Elevated Temperatures Affecting Efficiency, Overall Performance and Energy
Yield of PV Microinverters
type: conference
user_id: '28836'
year: '2020'
...
---
_id: '46334'
abstract:
- lang: eng
text: We build upon a recently proposed multi-objective view onto performance measurement
of single-objective stochastic solvers. The trade-off between the fraction of
failed runs and the mean runtime of successful runs – both to be minimized – is
directly analyzed based on a study on algorithm selection of inexact state-of-the-art
solvers for the famous Traveling Salesperson Problem (TSP). Moreover, we adopt
the hypervolume indicator (HV) commonly used in multi-objective optimization for
simultaneously assessing both conflicting objectives and investigate relations
to commonly used performance indicators, both theoretically and empirically. Next
to Penalized Average Runtime (PAR) and Penalized Quantile Runtime (PQR), the HV
measure is used as a core concept within the construction of per-instance algorithm
selection models offering interesting insights into complementary behavior of
inexact TSP solvers.
author:
- first_name: Jakob
full_name: Bossek, Jakob
last_name: Bossek
- first_name: Pascal
full_name: Kerschke, Pascal
last_name: Kerschke
- first_name: Heike
full_name: Trautmann, Heike
id: '100740'
last_name: Trautmann
orcid: 0000-0002-9788-8282
citation:
ama: Bossek J, Kerschke P, Trautmann H. A multi-objective perspective on performance
assessment and automated selection of single-objective optimization algorithms.
Applied Soft Computing. 2020;88:105901. doi:https://doi.org/10.1016/j.asoc.2019.105901
apa: Bossek, J., Kerschke, P., & Trautmann, H. (2020). A multi-objective perspective
on performance assessment and automated selection of single-objective optimization
algorithms. Applied Soft Computing, 88, 105901. https://doi.org/10.1016/j.asoc.2019.105901
bibtex: '@article{Bossek_Kerschke_Trautmann_2020, title={A multi-objective perspective
on performance assessment and automated selection of single-objective optimization
algorithms}, volume={88}, DOI={https://doi.org/10.1016/j.asoc.2019.105901},
journal={Applied Soft Computing}, author={Bossek, Jakob and Kerschke, Pascal and
Trautmann, Heike}, year={2020}, pages={105901} }'
chicago: 'Bossek, Jakob, Pascal Kerschke, and Heike Trautmann. “A Multi-Objective
Perspective on Performance Assessment and Automated Selection of Single-Objective
Optimization Algorithms.” Applied Soft Computing 88 (2020): 105901. https://doi.org/10.1016/j.asoc.2019.105901.'
ieee: 'J. Bossek, P. Kerschke, and H. Trautmann, “A multi-objective perspective
on performance assessment and automated selection of single-objective optimization
algorithms,” Applied Soft Computing, vol. 88, p. 105901, 2020, doi: https://doi.org/10.1016/j.asoc.2019.105901.'
mla: Bossek, Jakob, et al. “A Multi-Objective Perspective on Performance Assessment
and Automated Selection of Single-Objective Optimization Algorithms.” Applied
Soft Computing, vol. 88, 2020, p. 105901, doi:https://doi.org/10.1016/j.asoc.2019.105901.
short: J. Bossek, P. Kerschke, H. Trautmann, Applied Soft Computing 88 (2020) 105901.
date_created: 2023-08-04T07:42:26Z
date_updated: 2023-10-16T13:07:59Z
department:
- _id: '34'
- _id: '819'
doi: https://doi.org/10.1016/j.asoc.2019.105901
intvolume: ' 88'
keyword:
- Algorithm selection
- Multi-objective optimization
- Performance measurement
- Combinatorial optimization
- Traveling Salesperson Problem
language:
- iso: eng
page: '105901'
publication: Applied Soft Computing
publication_identifier:
issn:
- 1568-4946
status: public
title: A multi-objective perspective on performance assessment and automated selection
of single-objective optimization algorithms
type: journal_article
user_id: '15504'
volume: 88
year: '2020'
...
---
_id: '48848'
abstract:
- lang: eng
text: We build upon a recently proposed multi-objective view onto performance measurement
of single-objective stochastic solvers. The trade-off between the fraction of
failed runs and the mean runtime of successful runs \textendash both to be minimized
\textendash is directly analyzed based on a study on algorithm selection of inexact
state-of-the-art solvers for the famous Traveling Salesperson Problem (TSP). Moreover,
we adopt the hypervolume indicator (HV) commonly used in multi-objective optimization
for simultaneously assessing both conflicting objectives and investigate relations
to commonly used performance indicators, both theoretically and empirically. Next
to Penalized Average Runtime (PAR) and Penalized Quantile Runtime (PQR), the HV
measure is used as a core concept within the construction of per-instance algorithm
selection models offering interesting insights into complementary behavior of
inexact TSP solvers. \textbullet The multi-objective perspective is naturally
generalizable to multiple objectives. \textbullet Proof of relationship between
HV and the PAR in the considered bi-objective space. \textbullet New insights
into complementary behavior of stochastic optimization algorithms.
author:
- first_name: Jakob
full_name: Bossek, Jakob
id: '102979'
last_name: Bossek
orcid: 0000-0002-4121-4668
- first_name: Pascal
full_name: Kerschke, Pascal
last_name: Kerschke
- first_name: Heike
full_name: Trautmann, Heike
last_name: Trautmann
citation:
ama: Bossek J, Kerschke P, Trautmann H. A Multi-Objective Perspective on Performance
Assessment and Automated Selection of Single-Objective Optimization Algorithms.
Applied Soft Computing. 2020;88(C). doi:10.1016/j.asoc.2019.105901
apa: Bossek, J., Kerschke, P., & Trautmann, H. (2020). A Multi-Objective Perspective
on Performance Assessment and Automated Selection of Single-Objective Optimization
Algorithms. Applied Soft Computing, 88(C). https://doi.org/10.1016/j.asoc.2019.105901
bibtex: '@article{Bossek_Kerschke_Trautmann_2020, title={A Multi-Objective Perspective
on Performance Assessment and Automated Selection of Single-Objective Optimization
Algorithms}, volume={88}, DOI={10.1016/j.asoc.2019.105901},
number={C}, journal={Applied Soft Computing}, author={Bossek, Jakob and Kerschke,
Pascal and Trautmann, Heike}, year={2020} }'
chicago: Bossek, Jakob, Pascal Kerschke, and Heike Trautmann. “A Multi-Objective
Perspective on Performance Assessment and Automated Selection of Single-Objective
Optimization Algorithms.” Applied Soft Computing 88, no. C (2020). https://doi.org/10.1016/j.asoc.2019.105901.
ieee: 'J. Bossek, P. Kerschke, and H. Trautmann, “A Multi-Objective Perspective
on Performance Assessment and Automated Selection of Single-Objective Optimization
Algorithms,” Applied Soft Computing, vol. 88, no. C, 2020, doi: 10.1016/j.asoc.2019.105901.'
mla: Bossek, Jakob, et al. “A Multi-Objective Perspective on Performance Assessment
and Automated Selection of Single-Objective Optimization Algorithms.” Applied
Soft Computing, vol. 88, no. C, 2020, doi:10.1016/j.asoc.2019.105901.
short: J. Bossek, P. Kerschke, H. Trautmann, Applied Soft Computing 88 (2020).
date_created: 2023-11-14T15:58:53Z
date_updated: 2023-12-13T10:52:17Z
department:
- _id: '819'
doi: 10.1016/j.asoc.2019.105901
intvolume: ' 88'
issue: C
keyword:
- Algorithm selection
- Combinatorial optimization
- Multi-objective optimization
- Performance measurement
- Traveling Salesperson Problem
language:
- iso: eng
publication: Applied Soft Computing
publication_identifier:
issn:
- 1568-4946
status: public
title: A Multi-Objective Perspective on Performance Assessment and Automated Selection
of Single-Objective Optimization Algorithms
type: journal_article
user_id: '102979'
volume: 88
year: '2020'
...
---
_id: '20688'
abstract:
- lang: eng
text: We offer the first empirical analysis connecting the timing of general partner
(GP) compensation to private equity fund performance. Using detailed information
on limited partnership agreements between private equity limited and general partners,
we find that “GP-friendly” contracts—agreements that pay general partners on a
deal-by-deal basis instead of withholding carried interest until a benchmark return
has been earned—are associated with higher returns, both gross and net of fees.
This is robust to measures of performance persistence, time period effects, and
other contract terms and is related to exit-timing incentives. Timing practices
balance GP incentives against limited partner downside protection.
article_type: original
author:
- first_name: Niklas
full_name: Hüther, Niklas
last_name: Hüther
- first_name: David T.
full_name: Robinson, David T.
last_name: Robinson
- first_name: Sönke
full_name: Sievers, Sönke
id: '46447'
last_name: Sievers
- first_name: Thomas
full_name: Hartmann-Wendels, Thomas
last_name: Hartmann-Wendels
citation:
ama: 'Hüther N, Robinson DT, Sievers S, Hartmann-Wendels T. Paying for Performance
in Private Equity: Evidence from Venture Capital Partnerships. Management Science
(VHB-JOURQUAL 3 Ranking A+). 2019;66(4):1756-1782. doi:10.1287/mnsc.2018.3274'
apa: 'Hüther, N., Robinson, D. T., Sievers, S., & Hartmann-Wendels, T. (2019).
Paying for Performance in Private Equity: Evidence from Venture Capital Partnerships.
Management Science (VHB-JOURQUAL 3 Ranking A+), 66(4), 1756–1782.
https://doi.org/10.1287/mnsc.2018.3274'
bibtex: '@article{Hüther_Robinson_Sievers_Hartmann-Wendels_2019, title={Paying for
Performance in Private Equity: Evidence from Venture Capital Partnerships}, volume={66},
DOI={10.1287/mnsc.2018.3274},
number={4}, journal={Management Science (VHB-JOURQUAL 3 Ranking A+)}, author={Hüther,
Niklas and Robinson, David T. and Sievers, Sönke and Hartmann-Wendels, Thomas},
year={2019}, pages={1756–1782} }'
chicago: 'Hüther, Niklas, David T. Robinson, Sönke Sievers, and Thomas Hartmann-Wendels.
“Paying for Performance in Private Equity: Evidence from Venture Capital Partnerships.”
Management Science (VHB-JOURQUAL 3 Ranking A+) 66, no. 4 (2019): 1756–82.
https://doi.org/10.1287/mnsc.2018.3274.'
ieee: 'N. Hüther, D. T. Robinson, S. Sievers, and T. Hartmann-Wendels, “Paying for
Performance in Private Equity: Evidence from Venture Capital Partnerships,” Management
Science (VHB-JOURQUAL 3 Ranking A+), vol. 66, no. 4, pp. 1756–1782, 2019.'
mla: 'Hüther, Niklas, et al. “Paying for Performance in Private Equity: Evidence
from Venture Capital Partnerships.” Management Science (VHB-JOURQUAL 3 Ranking
A+), vol. 66, no. 4, 2019, pp. 1756–82, doi:10.1287/mnsc.2018.3274.'
short: N. Hüther, D.T. Robinson, S. Sievers, T. Hartmann-Wendels, Management Science
(VHB-JOURQUAL 3 Ranking A+) 66 (2019) 1756–1782.
date_created: 2020-12-08T13:19:35Z
date_updated: 2022-01-06T06:54:31Z
department:
- _id: '275'
doi: 10.1287/mnsc.2018.3274
intvolume: ' 66'
issue: '4'
keyword:
- venture capital
- compensation
- private equity
- VC partnership
- pay-performance relation
language:
- iso: eng
main_file_link:
- url: https://pubsonline.informs.org/doi/10.1287/mnsc.2018.3274
page: 1756-1782
publication: Management Science (VHB-JOURQUAL 3 Ranking A+)
publication_identifier:
issn:
- 0025-1909
- 1526-5501
publication_status: published
quality_controlled: '1'
related_material:
link:
- relation: supplementary_material
url: https://pubsonline.informs.org/doi/suppl/10.1287/mnsc.2018.3274/suppl_file/mnsc.2018.3274.sm1.pdf
- relation: other
url: https://corpgov.law.harvard.edu/2018/01/13/paying-for-performance-in-private-equity-evidence-from-vc-partnerships
- relation: earlier_version
url: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3087320
status: public
title: 'Paying for Performance in Private Equity: Evidence from Venture Capital Partnerships'
type: journal_article
user_id: '46447'
volume: 66
year: '2019'
...
---
_id: '6512'
abstract:
- lang: eng
text: Scheduling problems are essential for decision making in many academic disciplines,
including operations management, computer science, and information systems. Since
many scheduling problems are NP-hard in the strong sense, there is only limited
research on exact algorithms and how their efficiency scales when implemented
on parallel computing architectures. We address this gap by (1) adapting an exact
branch-and-price algorithm to a parallel machine scheduling problem on unrelated
machines with sequence- and machine-dependent setup times, (2) parallelizing the
adapted algorithm by implementing a distributed-memory parallelization with a
master/worker approach, and (3) conducting extensive computational experiments
using up to 960 MPI processes on a modern high performance computing cluster.
With our experiments, we show that the efficiency of our parallelization approach
can lead to superlinear speedup but can vary substantially between instances.
We further show that the wall time of serial execution can be substantially reduced
through our parallelization, in some cases from 94 hours to less than six minutes
when our algorithm is executed on 960 processes.
author:
- first_name: Gerhard
full_name: Rauchecker, Gerhard
last_name: Rauchecker
- first_name: Guido
full_name: Schryen, Guido
id: '72850'
last_name: Schryen
citation:
ama: 'Rauchecker G, Schryen G. Using High Performance Computing for Unrelated Parallel
Machine Scheduling with Sequence-Dependent Setup Times: Development and Computational
Evaluation of a Parallel Branch-and-Price Algorithm. Computers & Operations
Research. 2019;(104):338-357.'
apa: 'Rauchecker, G., & Schryen, G. (2019). Using High Performance Computing
for Unrelated Parallel Machine Scheduling with Sequence-Dependent Setup Times:
Development and Computational Evaluation of a Parallel Branch-and-Price Algorithm.
Computers & Operations Research, (104), 338–357.'
bibtex: '@article{Rauchecker_Schryen_2019, title={Using High Performance Computing
for Unrelated Parallel Machine Scheduling with Sequence-Dependent Setup Times:
Development and Computational Evaluation of a Parallel Branch-and-Price Algorithm},
number={104}, journal={Computers & Operations Research}, publisher={Elsevier},
author={Rauchecker, Gerhard and Schryen, Guido}, year={2019}, pages={338–357}
}'
chicago: 'Rauchecker, Gerhard, and Guido Schryen. “Using High Performance Computing
for Unrelated Parallel Machine Scheduling with Sequence-Dependent Setup Times:
Development and Computational Evaluation of a Parallel Branch-and-Price Algorithm.”
Computers & Operations Research, no. 104 (2019): 338–57.'
ieee: 'G. Rauchecker and G. Schryen, “Using High Performance Computing for Unrelated
Parallel Machine Scheduling with Sequence-Dependent Setup Times: Development and
Computational Evaluation of a Parallel Branch-and-Price Algorithm,” Computers
& Operations Research, no. 104, pp. 338–357, 2019.'
mla: 'Rauchecker, Gerhard, and Guido Schryen. “Using High Performance Computing
for Unrelated Parallel Machine Scheduling with Sequence-Dependent Setup Times:
Development and Computational Evaluation of a Parallel Branch-and-Price Algorithm.”
Computers & Operations Research, no. 104, Elsevier, 2019, pp. 338–57.'
short: G. Rauchecker, G. Schryen, Computers & Operations Research (2019) 338–357.
date_created: 2019-01-08T13:50:44Z
date_updated: 2022-01-06T07:03:08Z
ddc:
- '000'
department:
- _id: '277'
file:
- access_level: open_access
content_type: application/pdf
creator: hsiemes
date_created: 2019-01-08T14:03:53Z
date_updated: 2019-01-08T14:03:53Z
file_id: '6513'
file_name: cor-parallel-bp-for-upmsp.pdf
file_size: 4153528
relation: main_file
file_date_updated: 2019-01-08T14:03:53Z
has_accepted_license: '1'
issue: '104'
keyword:
- parallel machine scheduling with setup times
- parallel branch-and-price algorithm
- high performance computing
- master/worker parallelization
language:
- iso: eng
oa: '1'
page: 338-357
publication: Computers & Operations Research
publisher: Elsevier
status: public
title: 'Using High Performance Computing for Unrelated Parallel Machine Scheduling
with Sequence-Dependent Setup Times: Development and Computational Evaluation of
a Parallel Branch-and-Price Algorithm'
type: journal_article
user_id: '61579'
year: '2019'
...