---
OA_place: repository
_id: '9435'
abstract:
- lang: eng
text: For any given positive integer l, we prove that every plane deformation of
a circlewhich preserves the 1/2and 1/ (2l + 1) -rational caustics is trivial i.e.
the deformationconsists only of similarities (rescalings and isometries).
article_number: '2107.03499'
article_processing_charge: No
arxiv: 1
author:
- first_name: Vadim
full_name: Kaloshin, Vadim
id: FE553552-CDE8-11E9-B324-C0EBE5697425
last_name: Kaloshin
orcid: 0000-0002-6051-2628
- first_name: Edmond
full_name: Koudjinan, Edmond
id: 52DF3E68-AEFA-11EA-95A4-124A3DDC885E
last_name: Koudjinan
orcid: 0000-0003-2640-4049
citation:
ama: Kaloshin V, Koudjinan E. Non co-preservation of the 1/2 and 1/(2l+1)-rational
caustics along deformations of circles. arXiv. doi:10.48550/arXiv.2107.03499
apa: Kaloshin, V., & Koudjinan, E. (n.d.). Non co-preservation of the 1/2 and
1/(2l+1)-rational caustics along deformations of circles. arXiv. https://doi.org/10.48550/arXiv.2107.03499
chicago: Kaloshin, Vadim, and Edmond Koudjinan. “Non Co-Preservation of the 1/2
and 1/(2l+1)-Rational Caustics along Deformations of Circles.” ArXiv,
n.d. https://doi.org/10.48550/arXiv.2107.03499.
ieee: V. Kaloshin and E. Koudjinan, “Non co-preservation of the 1/2 and 1/(2l+1)-rational
caustics along deformations of circles,” arXiv. .
ista: Kaloshin V, Koudjinan E. Non co-preservation of the 1/2 and 1/(2l+1)-rational
caustics along deformations of circles. arXiv, 2107.03499.
mla: Kaloshin, Vadim, and Edmond Koudjinan. “Non Co-Preservation of the 1/2 and
1/(2l+1)-Rational Caustics along Deformations of Circles.” ArXiv, 2107.03499,
doi:10.48550/arXiv.2107.03499.
short: V. Kaloshin, E. Koudjinan, ArXiv (n.d.).
corr_author: '1'
date_created: 2021-05-30T13:58:13Z
date_published: 2021-07-07T00:00:00Z
date_updated: 2025-01-22T08:09:40Z
day: '07'
ddc:
- '500'
department:
- _id: VaKa
doi: 10.48550/arXiv.2107.03499
external_id:
arxiv:
- '2107.03499'
file:
- access_level: open_access
checksum: b281b5c2e3e90de0646c3eafcb2c6c25
content_type: application/pdf
creator: ekoudjin
date_created: 2021-05-30T13:57:37Z
date_updated: 2021-05-30T13:57:37Z
file_id: '9436'
file_name: CoExistence 2&3 caustics 3_17_6_2_3.pdf
file_size: 353431
relation: main_file
file_date_updated: 2021-05-30T13:57:37Z
has_accepted_license: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2107.03499
month: '07'
oa: 1
oa_version: Submitted Version
publication: arXiv
publication_status: submitted
status: public
title: Non co-preservation of the 1/2 and 1/(2l+1)-rational caustics along deformations
of circles
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2021'
...
---
_id: '9439'
abstract:
- lang: eng
text: The ability to adapt to changes in stimulus statistics is a hallmark of sensory
systems. Here, we developed a theoretical framework that can account for the dynamics
of adaptation from an information processing perspective. We use this framework
to optimize and analyze adaptive sensory codes, and we show that codes optimized
for stationary environments can suffer from prolonged periods of poor performance
when the environment changes. To mitigate the adversarial effects of these environmental
changes, sensory systems must navigate tradeoffs between the ability to accurately
encode incoming stimuli and the ability to rapidly detect and adapt to changes
in the distribution of these stimuli. We derive families of codes that balance
these objectives, and we demonstrate their close match to experimentally observed
neural dynamics during mean and variance adaptation. Our results provide a unifying
perspective on adaptation across a range of sensory systems, environments, and
sensory tasks.
acknowledgement: We thank D. Kastner and T. Münch for generously providing figures
from their work. We also thank V. Jayaraman, M. Noorman, T. Ma, and K. Krishnamurthy
for useful discussions and feedback on the manuscript. W.F.M. was funded by the
European Union’s Horizon 2020 Research and Innovation Programme under Marie Skłodowska-Curie
Grant Agreement No. 754411. A.M.H. was supported by the Howard Hughes Medical Institute.
article_processing_charge: No
article_type: original
author:
- first_name: Wiktor F
full_name: Mlynarski, Wiktor F
id: 358A453A-F248-11E8-B48F-1D18A9856A87
last_name: Mlynarski
- first_name: Ann M.
full_name: Hermundstad, Ann M.
last_name: Hermundstad
citation:
ama: Mlynarski WF, Hermundstad AM. Efficient and adaptive sensory codes. Nature
Neuroscience. 2021;24:998-1009. doi:10.1038/s41593-021-00846-0
apa: Mlynarski, W. F., & Hermundstad, A. M. (2021). Efficient and adaptive sensory
codes. Nature Neuroscience. Springer Nature. https://doi.org/10.1038/s41593-021-00846-0
chicago: Mlynarski, Wiktor F, and Ann M. Hermundstad. “Efficient and Adaptive Sensory
Codes.” Nature Neuroscience. Springer Nature, 2021. https://doi.org/10.1038/s41593-021-00846-0.
ieee: W. F. Mlynarski and A. M. Hermundstad, “Efficient and adaptive sensory codes,”
Nature Neuroscience, vol. 24. Springer Nature, pp. 998–1009, 2021.
ista: Mlynarski WF, Hermundstad AM. 2021. Efficient and adaptive sensory codes.
Nature Neuroscience. 24, 998–1009.
mla: Mlynarski, Wiktor F., and Ann M. Hermundstad. “Efficient and Adaptive Sensory
Codes.” Nature Neuroscience, vol. 24, Springer Nature, 2021, pp. 998–1009,
doi:10.1038/s41593-021-00846-0.
short: W.F. Mlynarski, A.M. Hermundstad, Nature Neuroscience 24 (2021) 998–1009.
date_created: 2021-05-30T22:01:24Z
date_published: 2021-05-20T00:00:00Z
date_updated: 2025-06-12T06:41:38Z
day: '20'
department:
- _id: GaTk
doi: 10.1038/s41593-021-00846-0
ec_funded: 1
external_id:
isi:
- '000652577300003'
pmid:
- '34017131'
intvolume: ' 24'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
url: 'https://doi.org/10.1101/669200 '
month: '05'
oa: 1
oa_version: Preprint
page: 998-1009
pmid: 1
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: Nature Neuroscience
publication_identifier:
eissn:
- 1546-1726
issn:
- 1097-6256
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Efficient and adaptive sensory codes
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 24
year: '2021'
...
---
_id: '9441'
abstract:
- lang: eng
text: "Isomanifolds are the generalization of isosurfaces to arbitrary dimension
and codimension, i.e. submanifolds of ℝ^d defined as the zero set of some multivariate
multivalued smooth function f: ℝ^d → ℝ^{d-n}, where n is the intrinsic dimension
of the manifold. A natural way to approximate a smooth isomanifold M is to consider
its Piecewise-Linear (PL) approximation M̂ based on a triangulation \U0001D4AF
of the ambient space ℝ^d. In this paper, we describe a simple algorithm to trace
isomanifolds from a given starting point. The algorithm works for arbitrary dimensions
n and d, and any precision D. Our main result is that, when f (or M) has bounded
complexity, the complexity of the algorithm is polynomial in d and δ = 1/D (and
unavoidably exponential in n). Since it is known that for δ = Ω (d^{2.5}), M̂
is O(D²)-close and isotopic to M, our algorithm produces a faithful PL-approximation
of isomanifolds of bounded complexity in time polynomial in d. Combining this
algorithm with dimensionality reduction techniques, the dependency on d in the
size of M̂ can be completely removed with high probability. We also show that
the algorithm can handle isomanifolds with boundary and, more generally, isostratifolds.
The algorithm for isomanifolds with boundary has been implemented and experimental
results are reported, showing that it is practical and can handle cases that are
far ahead of the state-of-the-art. "
acknowledgement: We thank Dominique Attali, Guilherme de Fonseca, Arijit Ghosh, Vincent
Pilaud and Aurélien Alvarez for their comments and suggestions. We also acknowledge
the reviewers.
alternative_title:
- LIPIcs
article_processing_charge: No
author:
- first_name: Jean-Daniel
full_name: Boissonnat, Jean-Daniel
last_name: Boissonnat
- first_name: Siargey
full_name: Kachanovich, Siargey
last_name: Kachanovich
- first_name: Mathijs
full_name: Wintraecken, Mathijs
id: 307CFBC8-F248-11E8-B48F-1D18A9856A87
last_name: Wintraecken
orcid: 0000-0002-7472-2220
citation:
ama: 'Boissonnat J-D, Kachanovich S, Wintraecken M. Tracing isomanifolds in Rd in
time polynomial in d using Coxeter-Freudenthal-Kuhn triangulations. In: 37th
International Symposium on Computational Geometry (SoCG 2021). Vol 189. Leibniz
International Proceedings in Informatics (LIPIcs). Dagstuhl, Germany: Schloss
Dagstuhl - Leibniz-Zentrum für Informatik; 2021:17:1-17:16. doi:10.4230/LIPIcs.SoCG.2021.17'
apa: 'Boissonnat, J.-D., Kachanovich, S., & Wintraecken, M. (2021). Tracing
isomanifolds in Rd in time polynomial in d using Coxeter-Freudenthal-Kuhn triangulations.
In 37th International Symposium on Computational Geometry (SoCG 2021) (Vol.
189, p. 17:1-17:16). Dagstuhl, Germany: Schloss Dagstuhl - Leibniz-Zentrum für
Informatik. https://doi.org/10.4230/LIPIcs.SoCG.2021.17'
chicago: 'Boissonnat, Jean-Daniel, Siargey Kachanovich, and Mathijs Wintraecken.
“Tracing Isomanifolds in Rd in Time Polynomial in d Using Coxeter-Freudenthal-Kuhn
Triangulations.” In 37th International Symposium on Computational Geometry
(SoCG 2021), 189:17:1-17:16. Leibniz International Proceedings in Informatics
(LIPIcs). Dagstuhl, Germany: Schloss Dagstuhl - Leibniz-Zentrum für Informatik,
2021. https://doi.org/10.4230/LIPIcs.SoCG.2021.17.'
ieee: J.-D. Boissonnat, S. Kachanovich, and M. Wintraecken, “Tracing isomanifolds
in Rd in time polynomial in d using Coxeter-Freudenthal-Kuhn triangulations,”
in 37th International Symposium on Computational Geometry (SoCG 2021),
Virtual, 2021, vol. 189, p. 17:1-17:16.
ista: 'Boissonnat J-D, Kachanovich S, Wintraecken M. 2021. Tracing isomanifolds
in Rd in time polynomial in d using Coxeter-Freudenthal-Kuhn triangulations. 37th
International Symposium on Computational Geometry (SoCG 2021). SoCG: Symposium
on Computational GeometryLeibniz International Proceedings in Informatics (LIPIcs),
LIPIcs, vol. 189, 17:1-17:16.'
mla: Boissonnat, Jean-Daniel, et al. “Tracing Isomanifolds in Rd in Time Polynomial
in d Using Coxeter-Freudenthal-Kuhn Triangulations.” 37th International Symposium
on Computational Geometry (SoCG 2021), vol. 189, Schloss Dagstuhl - Leibniz-Zentrum
für Informatik, 2021, p. 17:1-17:16, doi:10.4230/LIPIcs.SoCG.2021.17.
short: J.-D. Boissonnat, S. Kachanovich, M. Wintraecken, in:, 37th International
Symposium on Computational Geometry (SoCG 2021), Schloss Dagstuhl - Leibniz-Zentrum
für Informatik, Dagstuhl, Germany, 2021, p. 17:1-17:16.
conference:
end_date: 2021-06-11
location: Virtual
name: 'SoCG: Symposium on Computational Geometry'
start_date: 2021-06-07
date_created: 2021-06-02T10:10:55Z
date_published: 2021-06-02T00:00:00Z
date_updated: 2025-04-15T07:09:18Z
day: '02'
ddc:
- '005'
- '516'
- '514'
department:
- _id: HeEd
doi: 10.4230/LIPIcs.SoCG.2021.17
ec_funded: 1
file:
- access_level: open_access
checksum: c322aa48d5d35a35877896cc565705b6
content_type: application/pdf
creator: mwintrae
date_created: 2021-06-02T10:22:33Z
date_updated: 2021-06-02T10:22:33Z
file_id: '9442'
file_name: LIPIcs-SoCG-2021-17.pdf
file_size: 1972902
relation: main_file
success: 1
file_date_updated: 2021-06-02T10:22:33Z
has_accepted_license: '1'
intvolume: ' 189'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
page: 17:1-17:16
place: Dagstuhl, Germany
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: 37th International Symposium on Computational Geometry (SoCG 2021)
publication_identifier:
isbn:
- 978-3-95977-184-9
issn:
- 1868-8969
publication_status: published
publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik
quality_controlled: '1'
related_material:
record:
- id: '12960'
relation: later_version
status: public
scopus_import: '1'
series_title: Leibniz International Proceedings in Informatics (LIPIcs)
status: public
title: Tracing isomanifolds in Rd in time polynomial in d using Coxeter-Freudenthal-Kuhn
triangulations
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: conference
user_id: D865714E-FA4E-11E9-B85B-F5C5E5697425
volume: 189
year: '2021'
...
---
_id: '9443'
abstract:
- lang: eng
text: Endoplasmic reticulum–plasma membrane contact sites (ER–PM CS) play fundamental
roles in all eukaryotic cells. Arabidopsis thaliana mutants lacking the ER–PM
protein tether synaptotagmin1 (SYT1) exhibit decreased PM integrity under multiple
abiotic stresses, such as freezing, high salt, osmotic stress, and mechanical
damage. Here, we show that, together with SYT1, the stress-induced SYT3 is an
ER–PM tether that also functions in maintaining PM integrity. The ER–PM CS localization
of SYT1 and SYT3 is dependent on PM phosphatidylinositol-4-phosphate and is regulated
by abiotic stress. Lipidomic analysis revealed that cold stress increased the
accumulation of diacylglycerol at the PM in a syt1/3 double mutant relative to
wild-type while the levels of most glycerolipid species remain unchanged. In addition,
the SYT1-green fluorescent protein fusion preferentially binds diacylglycerol
in vivo with little affinity for polar glycerolipids. Our work uncovers a SYT-dependent
mechanism of stress adaptation counteracting the detrimental accumulation of diacylglycerol
at the PM produced during episodes of abiotic stress.
acknowledgement: "We would also like to thank Lothar Willmitzer for the lipidomic
analysis at the Max Planck Institute of Molecular Plant Physiology (Potsdam, Germany).
We thank Manuela Vega from SCI for her technical assistance in image analysis. We
thank John R. Pearson and the Bionand Nanoimaging Unit, F. David Navas Fernández
and the SCAI Imaging Facility and The Plant Cell Biology facility at the Shanghai
Center for Plant Stress Biology for assistance with confocal microscopy. The FaFAH1
clone was a gift from Iraida Amaya Saavedra (IFAPA-Centro de Churriana, Málaga,
Spain). The AHA3 antibody against the H+-ATPase was a gift from Ramón Serrano Salom
(Instituto de Biología Molecular y Celular de Plantas, Valencia, Spain). The MAP-mTU2-SAC1
construct was provided by Yvon Jaillais (Laboratoire Reproduction et Développement
des Plantes, Univ Lyon, France). The pGWB5 from the pGWB vector series, was provided
by Tsuyoshi Nakagawa (Department of Molecular and Functional Genomics, Shimane University).
We thank Plan Propio from the University of Málaga for financial support.\r\nFunding"
article_processing_charge: No
article_type: original
author:
- first_name: N
full_name: Ruiz-Lopez, N
last_name: Ruiz-Lopez
- first_name: J
full_name: Pérez-Sancho, J
last_name: Pérez-Sancho
- first_name: A
full_name: Esteban Del Valle, A
last_name: Esteban Del Valle
- first_name: RP
full_name: Haslam, RP
last_name: Haslam
- first_name: S
full_name: Vanneste, S
last_name: Vanneste
- first_name: R
full_name: Catalá, R
last_name: Catalá
- first_name: C
full_name: Perea-Resa, C
last_name: Perea-Resa
- first_name: D
full_name: Van Damme, D
last_name: Van Damme
- first_name: S
full_name: García-Hernández, S
last_name: García-Hernández
- first_name: A
full_name: Albert, A
last_name: Albert
- first_name: J
full_name: Vallarino, J
last_name: Vallarino
- first_name: J
full_name: Lin, J
last_name: Lin
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
- first_name: AP
full_name: Macho, AP
last_name: Macho
- first_name: J
full_name: Salinas, J
last_name: Salinas
- first_name: A
full_name: Rosado, A
last_name: Rosado
- first_name: JA
full_name: Napier, JA
last_name: Napier
- first_name: V
full_name: Amorim-Silva, V
last_name: Amorim-Silva
- first_name: MA
full_name: Botella, MA
last_name: Botella
citation:
ama: Ruiz-Lopez N, Pérez-Sancho J, Esteban Del Valle A, et al. Synaptotagmins at
the endoplasmic reticulum-plasma membrane contact sites maintain diacylglycerol
homeostasis during abiotic stress. Plant Cell. 2021;33(7):2431-2453. doi:10.1093/plcell/koab122
apa: Ruiz-Lopez, N., Pérez-Sancho, J., Esteban Del Valle, A., Haslam, R., Vanneste,
S., Catalá, R., … Botella, M. (2021). Synaptotagmins at the endoplasmic reticulum-plasma
membrane contact sites maintain diacylglycerol homeostasis during abiotic stress.
Plant Cell. American Society of Plant Biologists. https://doi.org/10.1093/plcell/koab122
chicago: Ruiz-Lopez, N, J Pérez-Sancho, A Esteban Del Valle, RP Haslam, S Vanneste,
R Catalá, C Perea-Resa, et al. “Synaptotagmins at the Endoplasmic Reticulum-Plasma
Membrane Contact Sites Maintain Diacylglycerol Homeostasis during Abiotic Stress.”
Plant Cell. American Society of Plant Biologists, 2021. https://doi.org/10.1093/plcell/koab122.
ieee: N. Ruiz-Lopez et al., “Synaptotagmins at the endoplasmic reticulum-plasma
membrane contact sites maintain diacylglycerol homeostasis during abiotic stress,”
Plant Cell, vol. 33, no. 7. American Society of Plant Biologists, pp. 2431–2453,
2021.
ista: Ruiz-Lopez N, Pérez-Sancho J, Esteban Del Valle A, Haslam R, Vanneste S, Catalá
R, Perea-Resa C, Van Damme D, García-Hernández S, Albert A, Vallarino J, Lin J,
Friml J, Macho A, Salinas J, Rosado A, Napier J, Amorim-Silva V, Botella M. 2021.
Synaptotagmins at the endoplasmic reticulum-plasma membrane contact sites maintain
diacylglycerol homeostasis during abiotic stress. Plant Cell. 33(7), 2431–2453.
mla: Ruiz-Lopez, N., et al. “Synaptotagmins at the Endoplasmic Reticulum-Plasma
Membrane Contact Sites Maintain Diacylglycerol Homeostasis during Abiotic Stress.”
Plant Cell, vol. 33, no. 7, American Society of Plant Biologists, 2021,
pp. 2431–53, doi:10.1093/plcell/koab122.
short: N. Ruiz-Lopez, J. Pérez-Sancho, A. Esteban Del Valle, R. Haslam, S. Vanneste,
R. Catalá, C. Perea-Resa, D. Van Damme, S. García-Hernández, A. Albert, J. Vallarino,
J. Lin, J. Friml, A. Macho, J. Salinas, A. Rosado, J. Napier, V. Amorim-Silva,
M. Botella, Plant Cell 33 (2021) 2431–2453.
date_created: 2021-06-02T13:13:58Z
date_published: 2021-07-01T00:00:00Z
date_updated: 2025-04-14T07:45:00Z
day: '01'
ddc:
- '580'
department:
- _id: JiFr
doi: 10.1093/plcell/koab122
ec_funded: 1
external_id:
isi:
- '000703938100026'
pmid:
- '33944955'
file:
- access_level: open_access
checksum: 22d596678d00310d793611864a6d0fcd
content_type: application/pdf
creator: cchlebak
date_created: 2021-10-14T13:36:38Z
date_updated: 2021-10-14T13:36:38Z
file_id: '10141'
file_name: 2021_PlantCell_RuizLopez.pdf
file_size: 2952028
relation: main_file
success: 1
file_date_updated: 2021-10-14T13:36:38Z
has_accepted_license: '1'
intvolume: ' 33'
isi: 1
issue: '7'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc-nd/4.0/
month: '07'
oa: 1
oa_version: Published Version
page: 2431-2453
pmid: 1
project:
- _id: 261099A6-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '742985'
name: Tracing Evolution of Auxin Transport and Polarity in Plants
publication: Plant Cell
publication_identifier:
eissn:
- 1532-298x
issn:
- 1040-4651
publication_status: published
publisher: American Society of Plant Biologists
quality_controlled: '1'
scopus_import: '1'
status: public
title: Synaptotagmins at the endoplasmic reticulum-plasma membrane contact sites maintain
diacylglycerol homeostasis during abiotic stress
tmp:
image: /images/cc_by_nc_nd.png
legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
(CC BY-NC-ND 4.0)
short: CC BY-NC-ND (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 33
year: '2021'
...
---
_id: '9447'
abstract:
- lang: eng
text: 'Lithium bis(trifluoromethylsulfonyl)imide (LiTFSI) based water-in-salt electrolytes
(WiSEs) has recently emerged as a new promising class of electrolytes, primarily
owing to their wide electrochemical stability windows (~3–4 V), that by far exceed
the thermodynamic stability window of water (1.23 V). Upon increasing the salt
concentration towards superconcentration the onset of the oxygen evolution reaction
(OER) shifts more significantly than the hydrogen evolution reaction (HER) does.
The OER shift has been explained by the accumulation of hydrophobic anions blocking
water access to the electrode surface, hence by double layer theory. Here we demonstrate
that the processes during oxidation are much more complex, involving OER, carbon
and salt decomposition by OER intermediates, and salt precipitation upon local
oversaturation. The positive shift in the onset potential of oxidation currents
was elucidated by combining several advanced analysis techniques: rotating ring-disk
electrode voltammetry, online electrochemical mass spectrometry, and X-ray photoelectron
spectroscopy, using both dilute and superconcentrated electrolytes. The results
demonstrate the importance of reactive OER intermediates and surface films for
electrolyte and electrode stability and motivate further studies of the nature
of the electrode.'
article_number: '050550'
article_processing_charge: No
author:
- first_name: Marion
full_name: Maffre, Marion
last_name: Maffre
- first_name: Roza
full_name: Bouchal, Roza
last_name: Bouchal
- first_name: Stefan Alexander
full_name: Freunberger, Stefan Alexander
id: A8CA28E6-CE23-11E9-AD2D-EC27E6697425
last_name: Freunberger
orcid: 0000-0003-2902-5319
- first_name: Niklas
full_name: Lindahl, Niklas
last_name: Lindahl
- first_name: Patrik
full_name: Johansson, Patrik
last_name: Johansson
- first_name: Frédéric
full_name: Favier, Frédéric
last_name: Favier
- first_name: Olivier
full_name: Fontaine, Olivier
last_name: Fontaine
- first_name: Daniel
full_name: Bélanger, Daniel
last_name: Bélanger
citation:
ama: Maffre M, Bouchal R, Freunberger SA, et al. Investigation of electrochemical
and chemical processes occurring at positive potentials in “Water-in-Salt” electrolytes.
Journal of The Electrochemical Society. 2021;168(5). doi:10.1149/1945-7111/ac0300
apa: Maffre, M., Bouchal, R., Freunberger, S. A., Lindahl, N., Johansson, P., Favier,
F., … Bélanger, D. (2021). Investigation of electrochemical and chemical processes
occurring at positive potentials in “Water-in-Salt” electrolytes. Journal of
The Electrochemical Society. IOP Publishing. https://doi.org/10.1149/1945-7111/ac0300
chicago: Maffre, Marion, Roza Bouchal, Stefan Alexander Freunberger, Niklas Lindahl,
Patrik Johansson, Frédéric Favier, Olivier Fontaine, and Daniel Bélanger. “Investigation
of Electrochemical and Chemical Processes Occurring at Positive Potentials in
‘Water-in-Salt’ Electrolytes.” Journal of The Electrochemical Society.
IOP Publishing, 2021. https://doi.org/10.1149/1945-7111/ac0300.
ieee: M. Maffre et al., “Investigation of electrochemical and chemical processes
occurring at positive potentials in ‘Water-in-Salt’ electrolytes,” Journal
of The Electrochemical Society, vol. 168, no. 5. IOP Publishing, 2021.
ista: Maffre M, Bouchal R, Freunberger SA, Lindahl N, Johansson P, Favier F, Fontaine
O, Bélanger D. 2021. Investigation of electrochemical and chemical processes occurring
at positive potentials in “Water-in-Salt” electrolytes. Journal of The Electrochemical
Society. 168(5), 050550.
mla: Maffre, Marion, et al. “Investigation of Electrochemical and Chemical Processes
Occurring at Positive Potentials in ‘Water-in-Salt’ Electrolytes.” Journal
of The Electrochemical Society, vol. 168, no. 5, 050550, IOP Publishing, 2021,
doi:10.1149/1945-7111/ac0300.
short: M. Maffre, R. Bouchal, S.A. Freunberger, N. Lindahl, P. Johansson, F. Favier,
O. Fontaine, D. Bélanger, Journal of The Electrochemical Society 168 (2021).
date_created: 2021-06-03T09:58:38Z
date_published: 2021-05-01T00:00:00Z
date_updated: 2024-10-21T06:02:10Z
day: '01'
department:
- _id: StFr
doi: 10.1149/1945-7111/ac0300
external_id:
isi:
- '000657724200001'
intvolume: ' 168'
isi: 1
issue: '5'
keyword:
- Renewable Energy
- Sustainability and the Environment
- Electrochemistry
- Materials Chemistry
- Electronic
- Optical and Magnetic Materials
- Surfaces
- Coatings and Films
- Condensed Matter Physics
language:
- iso: eng
month: '05'
oa_version: None
publication: Journal of The Electrochemical Society
publication_identifier:
eissn:
- 1945-7111
issn:
- 0013-4651
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: Investigation of electrochemical and chemical processes occurring at positive
potentials in “Water-in-Salt” electrolytes
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 168
year: '2021'
...
---
_id: '9462'
abstract:
- lang: eng
text: We consider a system of N trapped bosons with repulsive interactions in a
combined semiclassical mean-field limit at positive temperature. We show that
the free energy is well approximated by the minimum of the Hartree free energy
functional – a natural extension of the Hartree energy functional to positive
temperatures. The Hartree free energy functional converges in the same limit to
a semiclassical free energy functional, and we show that the system displays Bose–Einstein
condensation if and only if it occurs in the semiclassical free energy functional.
This allows us to show that for weak coupling the critical temperature decreases
due to the repulsive interactions.
acknowledgement: Funding from the European Union's Horizon 2020 research and innovation
programme under the ERC grant agreement No 694227 (R.S.) and under the Marie Sklodowska-Curie
grant agreement No 836146 (A.D.) is gratefully acknowledged. A.D. acknowledges support
of the Swiss National Science Foundation through the Ambizione grant PZ00P2 185851.
article_number: '109096'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Andreas
full_name: Deuchert, Andreas
last_name: Deuchert
- first_name: Robert
full_name: Seiringer, Robert
id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
last_name: Seiringer
orcid: 0000-0002-6781-0521
citation:
ama: Deuchert A, Seiringer R. Semiclassical approximation and critical temperature
shift for weakly interacting trapped bosons. Journal of Functional Analysis.
2021;281(6). doi:10.1016/j.jfa.2021.109096
apa: Deuchert, A., & Seiringer, R. (2021). Semiclassical approximation and critical
temperature shift for weakly interacting trapped bosons. Journal of Functional
Analysis. Elsevier. https://doi.org/10.1016/j.jfa.2021.109096
chicago: Deuchert, Andreas, and Robert Seiringer. “Semiclassical Approximation and
Critical Temperature Shift for Weakly Interacting Trapped Bosons.” Journal
of Functional Analysis. Elsevier, 2021. https://doi.org/10.1016/j.jfa.2021.109096.
ieee: A. Deuchert and R. Seiringer, “Semiclassical approximation and critical temperature
shift for weakly interacting trapped bosons,” Journal of Functional Analysis,
vol. 281, no. 6. Elsevier, 2021.
ista: Deuchert A, Seiringer R. 2021. Semiclassical approximation and critical temperature
shift for weakly interacting trapped bosons. Journal of Functional Analysis. 281(6),
109096.
mla: Deuchert, Andreas, and Robert Seiringer. “Semiclassical Approximation and Critical
Temperature Shift for Weakly Interacting Trapped Bosons.” Journal of Functional
Analysis, vol. 281, no. 6, 109096, Elsevier, 2021, doi:10.1016/j.jfa.2021.109096.
short: A. Deuchert, R. Seiringer, Journal of Functional Analysis 281 (2021).
date_created: 2021-06-06T22:01:28Z
date_published: 2021-09-15T00:00:00Z
date_updated: 2025-04-14T07:26:53Z
day: '15'
department:
- _id: RoSe
doi: 10.1016/j.jfa.2021.109096
ec_funded: 1
external_id:
arxiv:
- '2009.00992'
isi:
- '000656508600008'
intvolume: ' 281'
isi: 1
issue: '6'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2009.00992
month: '09'
oa: 1
oa_version: Preprint
project:
- _id: 25C6DC12-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '694227'
name: Analysis of quantum many-body systems
publication: Journal of Functional Analysis
publication_identifier:
eissn:
- 1096-0783
issn:
- 0022-1236
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: Semiclassical approximation and critical temperature shift for weakly interacting
trapped bosons
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 281
year: '2021'
...
---
_id: '9464'
abstract:
- lang: eng
text: We firstly introduce the self-assembled growth of highly uniform Ge quantum
wires with controllable position, distance and length on patterned Si (001) substrates.
We then present the electrically tunable strong spin-orbit coupling, the first
Ge hole spin qubit and ultrafast operation of hole spin qubit in the Ge/Si quantum
wires.
acknowledgement: This work was supported by the National Key R&D Program of China
(Grant No. 2016YFA0301700) and the ERC Starting Grant no. 335497.
article_number: '9420817'
article_processing_charge: No
author:
- first_name: Fei
full_name: Gao, Fei
last_name: Gao
- first_name: Jie Yin
full_name: Zhang, Jie Yin
last_name: Zhang
- first_name: Jian Huan
full_name: Wang, Jian Huan
last_name: Wang
- first_name: Ming
full_name: Ming, Ming
last_name: Ming
- first_name: Tina
full_name: Wang, Tina
last_name: Wang
- first_name: Jian Jun
full_name: Zhang, Jian Jun
last_name: Zhang
- first_name: Hannes
full_name: Watzinger, Hannes
id: 35DF8E50-F248-11E8-B48F-1D18A9856A87
last_name: Watzinger
- first_name: Josip
full_name: Kukucka, Josip
id: 3F5D8856-F248-11E8-B48F-1D18A9856A87
last_name: Kukucka
- first_name: Lada
full_name: Vukušić, Lada
id: 31E9F056-F248-11E8-B48F-1D18A9856A87
last_name: Vukušić
orcid: 0000-0003-2424-8636
- first_name: Georgios
full_name: Katsaros, Georgios
id: 38DB5788-F248-11E8-B48F-1D18A9856A87
last_name: Katsaros
orcid: 0000-0001-8342-202X
- first_name: Ke
full_name: Wang, Ke
last_name: Wang
- first_name: Gang
full_name: Xu, Gang
last_name: Xu
- first_name: Hai Ou
full_name: Li, Hai Ou
last_name: Li
- first_name: Guo Ping
full_name: Guo, Guo Ping
last_name: Guo
citation:
ama: 'Gao F, Zhang JY, Wang JH, et al. Ge/Si quantum wires for quantum computing.
In: 2021 5th IEEE Electron Devices Technology and Manufacturing Conference,
EDTM 2021. IEEE; 2021. doi:10.1109/EDTM50988.2021.9420817'
apa: 'Gao, F., Zhang, J. Y., Wang, J. H., Ming, M., Wang, T., Zhang, J. J., … Guo,
G. P. (2021). Ge/Si quantum wires for quantum computing. In 2021 5th IEEE Electron
Devices Technology and Manufacturing Conference, EDTM 2021. Virtual, Online:
IEEE. https://doi.org/10.1109/EDTM50988.2021.9420817'
chicago: Gao, Fei, Jie Yin Zhang, Jian Huan Wang, Ming Ming, Tina Wang, Jian Jun
Zhang, Hannes Watzinger, et al. “Ge/Si Quantum Wires for Quantum Computing.” In
2021 5th IEEE Electron Devices Technology and Manufacturing Conference, EDTM
2021. IEEE, 2021. https://doi.org/10.1109/EDTM50988.2021.9420817.
ieee: F. Gao et al., “Ge/Si quantum wires for quantum computing,” in 2021
5th IEEE Electron Devices Technology and Manufacturing Conference, EDTM 2021,
Virtual, Online, 2021.
ista: 'Gao F, Zhang JY, Wang JH, Ming M, Wang T, Zhang JJ, Watzinger H, Kukucka
J, Vukušić L, Katsaros G, Wang K, Xu G, Li HO, Guo GP. 2021. Ge/Si quantum wires
for quantum computing. 2021 5th IEEE Electron Devices Technology and Manufacturing
Conference, EDTM 2021. EDTM: IEEE Electron Devices Technology and Manufacturing
Conference, 9420817.'
mla: Gao, Fei, et al. “Ge/Si Quantum Wires for Quantum Computing.” 2021 5th IEEE
Electron Devices Technology and Manufacturing Conference, EDTM 2021, 9420817,
IEEE, 2021, doi:10.1109/EDTM50988.2021.9420817.
short: F. Gao, J.Y. Zhang, J.H. Wang, M. Ming, T. Wang, J.J. Zhang, H. Watzinger,
J. Kukucka, L. Vukušić, G. Katsaros, K. Wang, G. Xu, H.O. Li, G.P. Guo, in:, 2021
5th IEEE Electron Devices Technology and Manufacturing Conference, EDTM 2021,
IEEE, 2021.
conference:
end_date: 2021-04-11
location: Virtual, Online
name: 'EDTM: IEEE Electron Devices Technology and Manufacturing Conference'
start_date: 2021-04-08
date_created: 2021-06-06T22:01:29Z
date_published: 2021-04-08T00:00:00Z
date_updated: 2024-10-22T09:41:03Z
day: '08'
department:
- _id: GeKa
doi: 10.1109/EDTM50988.2021.9420817
ec_funded: 1
external_id:
isi:
- '000675595800006'
isi: 1
language:
- iso: eng
month: '04'
oa_version: None
project:
- _id: 25517E86-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '335497'
name: Towards Spin qubits and Majorana fermions in Germanium self assembled hut-wires
publication: 2021 5th IEEE Electron Devices Technology and Manufacturing Conference,
EDTM 2021
publication_identifier:
isbn:
- '9781728181769'
publication_status: published
publisher: IEEE
quality_controlled: '1'
scopus_import: '1'
status: public
title: Ge/Si quantum wires for quantum computing
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2021'
...
---
_id: '9465'
abstract:
- lang: eng
text: "Given a locally finite set \U0001D44B⊆ℝ\U0001D451 and an integer \U0001D458≥0,
we consider the function \U0001D430\U0001D458:Del\U0001D458(\U0001D44B)→ℝ on the
dual of the order-k Voronoi tessellation, whose sublevel sets generalize the notion
of alpha shapes from order-1 to order-k (Edelsbrunner et al. in IEEE Trans Inf
Theory IT-29:551–559, 1983; Krasnoshchekov and Polishchuk in Inf Process Lett
114:76–83, 2014). While this function is not necessarily generalized discrete
Morse, in the sense of Forman (Adv Math 134:90–145, 1998) and Freij (Discrete
Math 309:3821–3829, 2009), we prove that it satisfies similar properties so that
its increments can be meaningfully classified into critical and non-critical steps.
This result extends to the case of weighted points and sheds light on k-fold covers
with balls in Euclidean space."
article_number: '15'
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Herbert
full_name: Edelsbrunner, Herbert
id: 3FB178DA-F248-11E8-B48F-1D18A9856A87
last_name: Edelsbrunner
orcid: 0000-0002-9823-6833
- first_name: Anton
full_name: Nikitenko, Anton
id: 3E4FF1BA-F248-11E8-B48F-1D18A9856A87
last_name: Nikitenko
orcid: 0000-0002-0659-3201
- first_name: Georg F
full_name: Osang, Georg F
id: 464B40D6-F248-11E8-B48F-1D18A9856A87
last_name: Osang
orcid: 0000-0002-8882-5116
citation:
ama: Edelsbrunner H, Nikitenko A, Osang GF. A step in the Delaunay mosaic of order
k. Journal of Geometry. 2021;112(1). doi:10.1007/s00022-021-00577-4
apa: Edelsbrunner, H., Nikitenko, A., & Osang, G. F. (2021). A step in the Delaunay
mosaic of order k. Journal of Geometry. Springer Nature. https://doi.org/10.1007/s00022-021-00577-4
chicago: Edelsbrunner, Herbert, Anton Nikitenko, and Georg F Osang. “A Step in the
Delaunay Mosaic of Order K.” Journal of Geometry. Springer Nature, 2021.
https://doi.org/10.1007/s00022-021-00577-4.
ieee: H. Edelsbrunner, A. Nikitenko, and G. F. Osang, “A step in the Delaunay mosaic
of order k,” Journal of Geometry, vol. 112, no. 1. Springer Nature, 2021.
ista: Edelsbrunner H, Nikitenko A, Osang GF. 2021. A step in the Delaunay mosaic
of order k. Journal of Geometry. 112(1), 15.
mla: Edelsbrunner, Herbert, et al. “A Step in the Delaunay Mosaic of Order K.” Journal
of Geometry, vol. 112, no. 1, 15, Springer Nature, 2021, doi:10.1007/s00022-021-00577-4.
short: H. Edelsbrunner, A. Nikitenko, G.F. Osang, Journal of Geometry 112 (2021).
corr_author: '1'
date_created: 2021-06-06T22:01:29Z
date_published: 2021-04-01T00:00:00Z
date_updated: 2025-07-10T12:01:46Z
day: '01'
ddc:
- '510'
department:
- _id: HeEd
doi: 10.1007/s00022-021-00577-4
file:
- access_level: open_access
checksum: e52a832f1def52a2b23d21bcc09e646f
content_type: application/pdf
creator: kschuh
date_created: 2021-06-11T13:16:26Z
date_updated: 2021-06-11T13:16:26Z
file_id: '9544'
file_name: 2021_Geometry_Edelsbrunner.pdf
file_size: 694706
relation: main_file
success: 1
file_date_updated: 2021-06-11T13:16:26Z
has_accepted_license: '1'
intvolume: ' 112'
issue: '1'
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
publication: Journal of Geometry
publication_identifier:
eissn:
- 1420-8997
issn:
- 0047-2468
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: A step in the Delaunay mosaic of order k
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 112
year: '2021'
...
---
_id: '9467'
abstract:
- lang: eng
text: "Turbulence in the flow of fluid through a pipe can be suppressed by buoyancy
forces. As the suppression of turbulence leads to severe heat transfer deterioration,
this is an important and undesirable phenomenon in both heating and cooling applications.
Vertical flow is often considered, as the axial buoyancy force can help drive
the flow. With heating measured by the buoyancy parameter \U0001D436, our direct
numerical simulations show that shear-driven turbulence may either be completely
laminarised or it transitions to a relatively quiescent convection-driven state.
Buoyancy forces cause a flattening of the base flow profile, which in isothermal
pipe flow has recently been linked to complete suppression of turbulence (Kühnen
et al., Nat. Phys., vol. 14, 2018, pp. 386–390), and the flattened laminar base
profile has enhanced nonlinear stability (Marensi et al., J. Fluid Mech., vol.
863, 2019, pp. 50–875). In agreement with these findings, the nonlinear lower-branch
travelling-wave solution analysed here, which is believed to mediate transition
to turbulence in isothermal pipe flow, is shown to be suppressed by buoyancy.
A linear instability of the laminar base flow is responsible for the appearance
of the relatively quiescent convection driven state for \U0001D436≳4 across the
range of Reynolds numbers considered. In the suppression of turbulence, however,
i.e. in the transition from turbulence, we find clearer association with the analysis
of He et al. (J. Fluid Mech., vol. 809, 2016, pp. 31–71) than with the above dynamical
systems approach, which describes better the transition to turbulence. The laminarisation
criterion He et al. propose, based on an apparent Reynolds number of the flow
as measured by its driving pressure gradient, is found to capture the critical
\U0001D436=\U0001D436\U0001D450\U0001D45F(\U0001D445\U0001D452) above which the
flow will be laminarised or switch to the convection-driven type. Our analysis
suggests that it is the weakened rolls, rather than the streaks, which appear
to be critical for laminarisation."
acknowledgement: The anonymous referees are kindly acknowledged for their useful suggestions
andcomments.
article_number: A17
article_processing_charge: Yes (via OA deal)
article_type: original
arxiv: 1
author:
- first_name: Elena
full_name: Marensi, Elena
id: 0BE7553A-1004-11EA-B805-18983DDC885E
last_name: Marensi
orcid: 0000-0001-7173-4923
- first_name: Shuisheng
full_name: He, Shuisheng
last_name: He
- first_name: Ashley P.
full_name: Willis, Ashley P.
last_name: Willis
citation:
ama: Marensi E, He S, Willis AP. Suppression of turbulence and travelling waves
in a vertical heated pipe. Journal of Fluid Mechanics. 2021;919. doi:10.1017/jfm.2021.371
apa: Marensi, E., He, S., & Willis, A. P. (2021). Suppression of turbulence
and travelling waves in a vertical heated pipe. Journal of Fluid Mechanics.
Cambridge University Press. https://doi.org/10.1017/jfm.2021.371
chicago: Marensi, Elena, Shuisheng He, and Ashley P. Willis. “Suppression of Turbulence
and Travelling Waves in a Vertical Heated Pipe.” Journal of Fluid Mechanics.
Cambridge University Press, 2021. https://doi.org/10.1017/jfm.2021.371.
ieee: E. Marensi, S. He, and A. P. Willis, “Suppression of turbulence and travelling
waves in a vertical heated pipe,” Journal of Fluid Mechanics, vol. 919.
Cambridge University Press, 2021.
ista: Marensi E, He S, Willis AP. 2021. Suppression of turbulence and travelling
waves in a vertical heated pipe. Journal of Fluid Mechanics. 919, A17.
mla: Marensi, Elena, et al. “Suppression of Turbulence and Travelling Waves in a
Vertical Heated Pipe.” Journal of Fluid Mechanics, vol. 919, A17, Cambridge
University Press, 2021, doi:10.1017/jfm.2021.371.
short: E. Marensi, S. He, A.P. Willis, Journal of Fluid Mechanics 919 (2021).
corr_author: '1'
date_created: 2021-06-06T22:01:30Z
date_published: 2021-07-25T00:00:00Z
date_updated: 2025-07-10T12:01:47Z
day: '25'
ddc:
- '530'
department:
- _id: BjHo
doi: 10.1017/jfm.2021.371
external_id:
arxiv:
- '2008.13486'
isi:
- '000653785000001'
file:
- access_level: open_access
checksum: 867ad077e45c181c2c5ec1311ba27c41
content_type: application/pdf
creator: kschuh
date_created: 2021-08-03T09:53:28Z
date_updated: 2021-08-03T09:53:28Z
file_id: '9766'
file_name: 2021_JournalFluidMechanics_Marensi.pdf
file_size: 4087358
relation: main_file
success: 1
file_date_updated: 2021-08-03T09:53:28Z
has_accepted_license: '1'
intvolume: ' 919'
isi: 1
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
publication: Journal of Fluid Mechanics
publication_identifier:
eissn:
- 1469-7645
issn:
- 0022-1120
publication_status: published
publisher: Cambridge University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Suppression of turbulence and travelling waves in a vertical heated pipe
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 919
year: '2021'
...
---
_id: '9468'
abstract:
- lang: eng
text: "Motivated by the successful application of geometry to proving the Harary--Hill
conjecture for “pseudolinear” drawings of $K_n$, we introduce “pseudospherical”
drawings of graphs. A spherical drawing of a graph $G$ is a drawing in the unit
sphere $\\mathbb{S}^2$ in which the vertices of $G$ are represented as points---no
three on a great circle---and the edges of $G$ are shortest-arcs in $\\mathbb{S}^2$
connecting pairs of vertices. Such a drawing has three properties: (1) every edge
$e$ is contained in a simple closed curve $\\gamma_e$ such that the only vertices
in $\\gamma_e$ are the ends of $e$; (2) if $e\\ne f$, then $\\gamma_e\\cap\\gamma_f$
has precisely two crossings; and (3) if $e\\ne f$, then $e$ intersects $\\gamma_f$
at most once, in either a crossing or an end of $e$. We use properties (1)--(3)
to define a pseudospherical drawing of $G$. Our main result is that for the complete
graph, properties (1)--(3) are equivalent to the same three properties but with
“precisely two crossings” in (2) replaced by “at most two crossings.” The proof
requires a result in the geometric transversal theory of arrangements of pseudocircles.
This is proved using the surprising result that the absence of special arcs (coherent
spirals) in an arrangement of simple closed curves characterizes the fact that
any two curves in the arrangement have at most two crossings. Our studies provide
the necessary ideas for exhibiting a drawing of $K_{10}$ that has no extension
to an arrangement of pseudocircles and a drawing of $K_9$ that does extend to
an arrangement of pseudocircles, but no such extension has all pairs of pseudocircles
crossing twice.\r\n"
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Alan M
full_name: Arroyo Guevara, Alan M
id: 3207FDC6-F248-11E8-B48F-1D18A9856A87
last_name: Arroyo Guevara
orcid: 0000-0003-2401-8670
- first_name: R. Bruce
full_name: Richter, R. Bruce
last_name: Richter
- first_name: Matthew
full_name: Sunohara, Matthew
last_name: Sunohara
citation:
ama: Arroyo Guevara AM, Richter RB, Sunohara M. Extending drawings of complete graphs
into arrangements of pseudocircles. SIAM Journal on Discrete Mathematics.
2021;35(2):1050-1076. doi:10.1137/20M1313234
apa: Arroyo Guevara, A. M., Richter, R. B., & Sunohara, M. (2021). Extending
drawings of complete graphs into arrangements of pseudocircles. SIAM Journal
on Discrete Mathematics. Society for Industrial and Applied Mathematics. https://doi.org/10.1137/20M1313234
chicago: Arroyo Guevara, Alan M, R. Bruce Richter, and Matthew Sunohara. “Extending
Drawings of Complete Graphs into Arrangements of Pseudocircles.” SIAM Journal
on Discrete Mathematics. Society for Industrial and Applied Mathematics, 2021.
https://doi.org/10.1137/20M1313234.
ieee: A. M. Arroyo Guevara, R. B. Richter, and M. Sunohara, “Extending drawings
of complete graphs into arrangements of pseudocircles,” SIAM Journal on Discrete
Mathematics, vol. 35, no. 2. Society for Industrial and Applied Mathematics,
pp. 1050–1076, 2021.
ista: Arroyo Guevara AM, Richter RB, Sunohara M. 2021. Extending drawings of complete
graphs into arrangements of pseudocircles. SIAM Journal on Discrete Mathematics.
35(2), 1050–1076.
mla: Arroyo Guevara, Alan M., et al. “Extending Drawings of Complete Graphs into
Arrangements of Pseudocircles.” SIAM Journal on Discrete Mathematics, vol.
35, no. 2, Society for Industrial and Applied Mathematics, 2021, pp. 1050–76,
doi:10.1137/20M1313234.
short: A.M. Arroyo Guevara, R.B. Richter, M. Sunohara, SIAM Journal on Discrete
Mathematics 35 (2021) 1050–1076.
date_created: 2021-06-06T22:01:30Z
date_published: 2021-05-20T00:00:00Z
date_updated: 2025-04-14T07:43:46Z
day: '20'
department:
- _id: UlWa
doi: 10.1137/20M1313234
ec_funded: 1
external_id:
arxiv:
- '2001.06053'
isi:
- '000674142200022'
intvolume: ' 35'
isi: 1
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2001.06053
month: '05'
oa: 1
oa_version: Preprint
page: 1050-1076
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: SIAM Journal on Discrete Mathematics
publication_identifier:
issn:
- 0895-4801
publication_status: published
publisher: Society for Industrial and Applied Mathematics
quality_controlled: '1'
scopus_import: '1'
status: public
title: Extending drawings of complete graphs into arrangements of pseudocircles
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 35
year: '2021'
...
---
_id: '9540'
abstract:
- lang: eng
text: The hexameric AAA-ATPase Drg1 is a key factor in eukaryotic ribosome biogenesis
and initiates cytoplasmic maturation of the large ribosomal subunit by releasing
the shuttling maturation factor Rlp24. Drg1 monomers contain two AAA-domains (D1
and D2) that act in a concerted manner. Rlp24 release is inhibited by the drug
diazaborine which blocks ATP hydrolysis in D2. The mode of inhibition was unknown.
Here we show the first cryo-EM structure of Drg1 revealing the inhibitory mechanism.
Diazaborine forms a covalent bond to the 2′-OH of the nucleotide in D2, explaining
its specificity for this site. As a consequence, the D2 domain is locked in a
rigid, inactive state, stalling the whole Drg1 hexamer. Resistance mechanisms
identified include abolished drug binding and altered positioning of the nucleotide.
Our results suggest nucleotide-modifying compounds as potential novel inhibitors
for AAA-ATPases.
acknowledged_ssus:
- _id: EM-Fac
acknowledgement: We are deeply grateful to the late Gregor Högenauer who built the
foundation for this study with his visionary work on the inhibitor diazaborine and
its bacterial target. We thank Rolf Breinbauer for insightful discussions on boron
chemistry. We thank Anton Meinhart and Tim Clausen for the valuable discussion of
the manuscript. We are indebted to Thomas Köcher for the MS measurement of the diazaborine-ATPγS
adduct. We thank the team of the VBCF for support during early phases of this work
and the IST Austria Electron Microscopy Facility for providing equipment. The lab
of D.H. is supported by Boehringer Ingelheim. The work was funded by FWF projects
P32536 and P32977 (to H.B.).
article_number: '3483'
article_processing_charge: No
article_type: original
author:
- first_name: Michael
full_name: Prattes, Michael
last_name: Prattes
- first_name: Irina
full_name: Grishkovskaya, Irina
last_name: Grishkovskaya
- first_name: Victor-Valentin
full_name: Hodirnau, Victor-Valentin
id: 3661B498-F248-11E8-B48F-1D18A9856A87
last_name: Hodirnau
orcid: 0000-0003-3904-947X
- first_name: Ingrid
full_name: Rössler, Ingrid
last_name: Rössler
- first_name: Isabella
full_name: Klein, Isabella
last_name: Klein
- first_name: Christina
full_name: Hetzmannseder, Christina
last_name: Hetzmannseder
- first_name: Gertrude
full_name: Zisser, Gertrude
last_name: Zisser
- first_name: Christian C.
full_name: Gruber, Christian C.
last_name: Gruber
- first_name: Karl
full_name: Gruber, Karl
last_name: Gruber
- first_name: David
full_name: Haselbach, David
last_name: Haselbach
- first_name: Helmut
full_name: Bergler, Helmut
last_name: Bergler
citation:
ama: Prattes M, Grishkovskaya I, Hodirnau V-V, et al. Structural basis for inhibition
of the AAA-ATPase Drg1 by diazaborine. Nature Communications. 2021;12(1).
doi:10.1038/s41467-021-23854-x
apa: Prattes, M., Grishkovskaya, I., Hodirnau, V.-V., Rössler, I., Klein, I., Hetzmannseder,
C., … Bergler, H. (2021). Structural basis for inhibition of the AAA-ATPase Drg1
by diazaborine. Nature Communications. Springer Nature. https://doi.org/10.1038/s41467-021-23854-x
chicago: Prattes, Michael, Irina Grishkovskaya, Victor-Valentin Hodirnau, Ingrid
Rössler, Isabella Klein, Christina Hetzmannseder, Gertrude Zisser, et al. “Structural
Basis for Inhibition of the AAA-ATPase Drg1 by Diazaborine.” Nature Communications.
Springer Nature, 2021. https://doi.org/10.1038/s41467-021-23854-x.
ieee: M. Prattes et al., “Structural basis for inhibition of the AAA-ATPase
Drg1 by diazaborine,” Nature Communications, vol. 12, no. 1. Springer Nature,
2021.
ista: Prattes M, Grishkovskaya I, Hodirnau V-V, Rössler I, Klein I, Hetzmannseder
C, Zisser G, Gruber CC, Gruber K, Haselbach D, Bergler H. 2021. Structural basis
for inhibition of the AAA-ATPase Drg1 by diazaborine. Nature Communications. 12(1),
3483.
mla: Prattes, Michael, et al. “Structural Basis for Inhibition of the AAA-ATPase
Drg1 by Diazaborine.” Nature Communications, vol. 12, no. 1, 3483, Springer
Nature, 2021, doi:10.1038/s41467-021-23854-x.
short: M. Prattes, I. Grishkovskaya, V.-V. Hodirnau, I. Rössler, I. Klein, C. Hetzmannseder,
G. Zisser, C.C. Gruber, K. Gruber, D. Haselbach, H. Bergler, Nature Communications
12 (2021).
date_created: 2021-06-10T14:57:45Z
date_published: 2021-06-09T00:00:00Z
date_updated: 2024-10-21T06:02:01Z
day: '09'
ddc:
- '570'
department:
- _id: EM-Fac
doi: 10.1038/s41467-021-23854-x
external_id:
isi:
- '000664874700014'
pmid:
- '34108481'
file:
- access_level: open_access
checksum: 40fc24c1310930990b52a8ad1142ee97
content_type: application/pdf
creator: cziletti
date_created: 2021-06-15T18:55:59Z
date_updated: 2021-06-15T18:55:59Z
file_id: '9556'
file_name: 2021_NatureComm_Prattes.pdf
file_size: 3397292
relation: main_file
success: 1
file_date_updated: 2021-06-15T18:55:59Z
has_accepted_license: '1'
intvolume: ' 12'
isi: 1
issue: '1'
keyword:
- General Biochemistry
- Genetics and Molecular Biology
- General Physics and Astronomy
- General Chemistry
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
pmid: 1
publication: Nature Communications
publication_identifier:
eissn:
- 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Structural basis for inhibition of the AAA-ATPase Drg1 by diazaborine
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 12
year: '2021'
...
---
_id: '9541'
abstract:
- lang: eng
text: The Massively Parallel Computation (MPC) model is an emerging model that distills
core aspects of distributed and parallel computation, developed as a tool to solve
combinatorial (typically graph) problems in systems of many machines with limited
space. Recent work has focused on the regime in which machines have sublinear
(in n, the number of nodes in the input graph) space, with randomized algorithms
presented for the fundamental problems of Maximal Matching and Maximal Independent
Set. However, there have been no prior corresponding deterministic algorithms.
A major challenge underlying the sublinear space setting is that the local space
of each machine might be too small to store all edges incident to a single node.
This poses a considerable obstacle compared to classical models in which each
node is assumed to know and have easy access to its incident edges. To overcome
this barrier, we introduce a new graph sparsification technique that deterministically
computes a low-degree subgraph, with the additional property that solving the
problem on this subgraph provides significant progress towards solving the problem
for the original input graph. Using this framework to derandomize the well-known
algorithm of Luby [SICOMP’86], we obtain O(log Δ + log log n)-round deterministic
MPC algorithms for solving the problems of Maximal Matching and Maximal Independent
Set with O(nɛ) space on each machine for any constant ɛ > 0. These algorithms
also run in O(log Δ) rounds in the closely related model of CONGESTED CLIQUE,
improving upon the state-of-the-art bound of O(log 2Δ) rounds by Censor-Hillel
et al. [DISC’17].
acknowledgement: "Institute of Science and Technology Austria (IST Austria). Email:
peter.davies@ist.ac.at. Work partially\r\ndone at the Department of Computer Science
and Centre for Discrete Mathematics and its Applications (DIMAP),University of Warwick.
Research partially supported by the European Union’s Horizon 2020 research and innovation
programme under the Marie Skłodowska-Curie grant agreement No 754411, the Centre
for Discrete Mathematics and its Applications, a Weizmann-UK Making Connections
Grant, and EPSRC award EP/N011163/1."
article_number: '16'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Artur
full_name: Czumaj, Artur
last_name: Czumaj
- first_name: Peter
full_name: Davies, Peter
id: 11396234-BB50-11E9-B24C-90FCE5697425
last_name: Davies
orcid: 0000-0002-5646-9524
- first_name: Merav
full_name: Parter, Merav
last_name: Parter
citation:
ama: Czumaj A, Davies P, Parter M. Graph sparsification for derandomizing massively
parallel computation with low space. ACM Transactions on Algorithms. 2021;17(2).
doi:10.1145/3451992
apa: Czumaj, A., Davies, P., & Parter, M. (2021). Graph sparsification for derandomizing
massively parallel computation with low space. ACM Transactions on Algorithms.
Association for Computing Machinery. https://doi.org/10.1145/3451992
chicago: Czumaj, Artur, Peter Davies, and Merav Parter. “Graph Sparsification for
Derandomizing Massively Parallel Computation with Low Space.” ACM Transactions
on Algorithms. Association for Computing Machinery, 2021. https://doi.org/10.1145/3451992.
ieee: A. Czumaj, P. Davies, and M. Parter, “Graph sparsification for derandomizing
massively parallel computation with low space,” ACM Transactions on Algorithms,
vol. 17, no. 2. Association for Computing Machinery, 2021.
ista: Czumaj A, Davies P, Parter M. 2021. Graph sparsification for derandomizing
massively parallel computation with low space. ACM Transactions on Algorithms.
17(2), 16.
mla: Czumaj, Artur, et al. “Graph Sparsification for Derandomizing Massively Parallel
Computation with Low Space.” ACM Transactions on Algorithms, vol. 17, no.
2, 16, Association for Computing Machinery, 2021, doi:10.1145/3451992.
short: A. Czumaj, P. Davies, M. Parter, ACM Transactions on Algorithms 17 (2021).
date_created: 2021-06-10T19:31:05Z
date_published: 2021-06-01T00:00:00Z
date_updated: 2025-04-15T06:54:47Z
day: '01'
ddc:
- '000'
department:
- _id: DaAl
doi: 10.1145/3451992
ec_funded: 1
external_id:
arxiv:
- '1912.05390'
isi:
- '000661311300006'
file:
- access_level: open_access
checksum: a21c627683890c309a68f6389302c408
content_type: application/pdf
creator: pdavies
date_created: 2021-06-10T19:33:56Z
date_updated: 2021-06-10T19:33:56Z
file_id: '9542'
file_name: MISMM-arxiv.pdf
file_size: 587404
relation: main_file
success: 1
file_date_updated: 2021-06-10T19:33:56Z
has_accepted_license: '1'
intvolume: ' 17'
isi: 1
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1912.05390
month: '06'
oa: 1
oa_version: Submitted Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: ACM Transactions on Algorithms
publication_identifier:
eissn:
- 1549-6333
issn:
- 1549-6325
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
related_material:
record:
- id: '7802'
relation: earlier_version
status: public
scopus_import: '1'
status: public
title: Graph sparsification for derandomizing massively parallel computation with
low space
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 17
year: '2021'
...
---
_id: '9543'
abstract:
- lang: eng
text: We consider the problem ofdistributed mean estimation (DME), in which n machines
are each given a local d-dimensional vector xv∈Rd, and must cooperate to estimate
the mean of their inputs μ=1n∑nv=1xv, while minimizing total communication cost.
DME is a fundamental construct in distributed machine learning, and there has
been considerable work on variants of this problem, especially in the context
of distributed variance reduction for stochastic gradients in parallel SGD. Previous
work typically assumes an upper bound on the norm of the input vectors, and achieves
an error bound in terms of this norm. However, in many real applications, the
input vectors are concentrated around the correct output μ, but μ itself has large
norm. In such cases, previous output error bounds perform poorly. In this paper,
we show that output error bounds need not depend on input norm. We provide a method
of quantization which allows distributed mean estimation to be performed with
solution quality dependent only on the distance between inputs, not on input norm,
and show an analogous result for distributed variance reduction. The technique
is based on a new connection with lattice theory. We also provide lower bounds
showing that the communication to error trade-off of our algorithms is asymptotically
optimal. As the lattices achieving optimal bounds under l2-norm can be computationally
impractical, we also present an extension which leverages easy-to-use cubic lattices,
and is loose only up to a logarithmic factor ind. We show experimentally that
our method yields practical improvements for common applications, relative to
prior approaches.
article_processing_charge: No
arxiv: 1
author:
- first_name: Peter
full_name: Davies, Peter
id: 11396234-BB50-11E9-B24C-90FCE5697425
last_name: Davies
orcid: 0000-0002-5646-9524
- first_name: Vijaykrishna
full_name: Gurunanthan, Vijaykrishna
last_name: Gurunanthan
- first_name: 'Niusha '
full_name: 'Moshrefi, Niusha '
id: 4db776ff-ce15-11eb-96e3-bc2b90b01c16
last_name: Moshrefi
- first_name: Saleh
full_name: Ashkboos, Saleh
id: 0D0A9058-257B-11EA-A937-9341C3D8BC8A
last_name: Ashkboos
- first_name: Dan-Adrian
full_name: Alistarh, Dan-Adrian
id: 4A899BFC-F248-11E8-B48F-1D18A9856A87
last_name: Alistarh
orcid: 0000-0003-3650-940X
citation:
ama: 'Davies P, Gurunanthan V, Moshrefi N, Ashkboos S, Alistarh D-A. New bounds
for distributed mean estimation and variance reduction. In: 9th International
Conference on Learning Representations. ; 2021.'
apa: Davies, P., Gurunanthan, V., Moshrefi, N., Ashkboos, S., & Alistarh, D.-A.
(2021). New bounds for distributed mean estimation and variance reduction. In
9th International Conference on Learning Representations. Virtual.
chicago: Davies, Peter, Vijaykrishna Gurunanthan, Niusha Moshrefi, Saleh Ashkboos,
and Dan-Adrian Alistarh. “New Bounds for Distributed Mean Estimation and Variance
Reduction.” In 9th International Conference on Learning Representations,
2021.
ieee: P. Davies, V. Gurunanthan, N. Moshrefi, S. Ashkboos, and D.-A. Alistarh, “New
bounds for distributed mean estimation and variance reduction,” in 9th International
Conference on Learning Representations, Virtual, 2021.
ista: 'Davies P, Gurunanthan V, Moshrefi N, Ashkboos S, Alistarh D-A. 2021. New
bounds for distributed mean estimation and variance reduction. 9th International
Conference on Learning Representations. ICLR: International Conference on Learning
Representations.'
mla: Davies, Peter, et al. “New Bounds for Distributed Mean Estimation and Variance
Reduction.” 9th International Conference on Learning Representations, 2021.
short: P. Davies, V. Gurunanthan, N. Moshrefi, S. Ashkboos, D.-A. Alistarh, in:,
9th International Conference on Learning Representations, 2021.
conference:
end_date: 2021-05-07
location: Virtual
name: 'ICLR: International Conference on Learning Representations'
start_date: 2021-05-03
corr_author: '1'
date_created: 2021-06-10T19:46:08Z
date_published: 2021-05-01T00:00:00Z
date_updated: 2025-07-10T12:01:50Z
day: '01'
department:
- _id: DaAl
ec_funded: 1
external_id:
arxiv:
- '2002.09268'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://openreview.net/pdf?id=t86MwoUCCNe
month: '05'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: 9th International Conference on Learning Representations
publication_status: published
quality_controlled: '1'
status: public
title: New bounds for distributed mean estimation and variance reduction
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2021'
...
---
_id: '9547'
abstract:
- lang: eng
text: With the wider availability of full-color 3D printers, color-accurate 3D-print
preparation has received increased attention. A key challenge lies in the inherent
translucency of commonly used print materials that blurs out details of the color
texture. Previous work tries to compensate for these scattering effects through
strategic assignment of colored primary materials to printer voxels. To date,
the highest-quality approach uses iterative optimization that relies on computationally
expensive Monte Carlo light transport simulation to predict the surface appearance
from subsurface scattering within a given print material distribution; that optimization,
however, takes in the order of days on a single machine. In our work, we dramatically
speed up the process by replacing the light transport simulation with a data-driven
approach. Leveraging a deep neural network to predict the scattering within a
highly heterogeneous medium, our method performs around two orders of magnitude
faster than Monte Carlo rendering while yielding optimization results of similar
quality level. The network is based on an established method from atmospheric
cloud rendering, adapted to our domain and extended by a physically motivated
weight sharing scheme that substantially reduces the network size. We analyze
its performance in an end-to-end print preparation pipeline and compare quality
and runtime to alternative approaches, and demonstrate its generalization to unseen
geometry and material values. This for the first time enables full heterogenous
material optimization for 3D-print preparation within time frames in the order
of the actual printing time.
acknowledgement: We thank Sebastian Cucerca for processing and capturing the phys-cal
printouts. This work was supported by the Charles University grant SVV-260588 and
Czech Science Foundation grant 19-07626S. This project has received funding from
the European Union’s Horizon 2020 research and innovation programme, under the Marie
Skłodowska Curie grant agreements No 642841 (DISTRO) and No765911 (RealVision),
and under the European Research Council grant agreement No 715767 (MATERIALIZABLE).
article_processing_charge: No
article_type: original
author:
- first_name: Tobias
full_name: Rittig, Tobias
last_name: Rittig
- first_name: Denis
full_name: Sumin, Denis
last_name: Sumin
- first_name: Vahid
full_name: Babaei, Vahid
last_name: Babaei
- first_name: Piotr
full_name: Didyk, Piotr
last_name: Didyk
- first_name: Alexey
full_name: Voloboy, Alexey
last_name: Voloboy
- first_name: Alexander
full_name: Wilkie, Alexander
last_name: Wilkie
- first_name: Bernd
full_name: Bickel, Bernd
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
- first_name: Karol
full_name: Myszkowski, Karol
last_name: Myszkowski
- first_name: Tim
full_name: Weyrich, Tim
last_name: Weyrich
- first_name: Jaroslav
full_name: Křivánek, Jaroslav
last_name: Křivánek
citation:
ama: Rittig T, Sumin D, Babaei V, et al. Neural acceleration of scattering-aware
color 3D printing. Computer Graphics Forum. 2021;40(2):205-219. doi:10.1111/cgf.142626
apa: Rittig, T., Sumin, D., Babaei, V., Didyk, P., Voloboy, A., Wilkie, A., … Křivánek,
J. (2021). Neural acceleration of scattering-aware color 3D printing. Computer
Graphics Forum. Wiley. https://doi.org/10.1111/cgf.142626
chicago: Rittig, Tobias, Denis Sumin, Vahid Babaei, Piotr Didyk, Alexey Voloboy,
Alexander Wilkie, Bernd Bickel, Karol Myszkowski, Tim Weyrich, and Jaroslav Křivánek.
“Neural Acceleration of Scattering-Aware Color 3D Printing.” Computer Graphics
Forum. Wiley, 2021. https://doi.org/10.1111/cgf.142626.
ieee: T. Rittig et al., “Neural acceleration of scattering-aware color 3D
printing,” Computer Graphics Forum, vol. 40, no. 2. Wiley, pp. 205–219,
2021.
ista: Rittig T, Sumin D, Babaei V, Didyk P, Voloboy A, Wilkie A, Bickel B, Myszkowski
K, Weyrich T, Křivánek J. 2021. Neural acceleration of scattering-aware color
3D printing. Computer Graphics Forum. 40(2), 205–219.
mla: Rittig, Tobias, et al. “Neural Acceleration of Scattering-Aware Color 3D Printing.”
Computer Graphics Forum, vol. 40, no. 2, Wiley, 2021, pp. 205–19, doi:10.1111/cgf.142626.
short: T. Rittig, D. Sumin, V. Babaei, P. Didyk, A. Voloboy, A. Wilkie, B. Bickel,
K. Myszkowski, T. Weyrich, J. Křivánek, Computer Graphics Forum 40 (2021) 205–219.
date_created: 2021-06-13T22:01:32Z
date_published: 2021-05-01T00:00:00Z
date_updated: 2025-03-31T15:58:16Z
day: '01'
ddc:
- '004'
department:
- _id: BeBi
doi: 10.1111/cgf.142626
ec_funded: 1
external_id:
isi:
- '000657959600017'
file:
- access_level: open_access
checksum: 33271724215f54a75c39d2ed40f2c502
content_type: application/pdf
creator: bbickel
date_created: 2021-10-11T12:06:50Z
date_updated: 2021-10-11T12:06:50Z
file_id: '10120'
file_name: ScatteringAwareColor3DPrinting_authorVersion.pdf
file_size: 26026501
relation: main_file
success: 1
file_date_updated: 2021-10-11T12:06:50Z
has_accepted_license: '1'
intvolume: ' 40'
isi: 1
issue: '2'
language:
- iso: eng
month: '05'
oa: 1
oa_version: Submitted Version
page: 205-219
project:
- _id: 2508E324-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '642841'
name: Distributed 3D Object Design
- _id: 24F9549A-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '715767'
name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and
Modeling'
publication: Computer Graphics Forum
publication_identifier:
eissn:
- 1467-8659
issn:
- 0167-7055
publication_status: published
publisher: Wiley
quality_controlled: '1'
scopus_import: '1'
status: public
title: Neural acceleration of scattering-aware color 3D printing
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 40
year: '2021'
...
---
_id: '9548'
abstract:
- lang: eng
text: 'We extend the notion of the minimal volume ellipsoid containing a convex
body in Rd to the setting of logarithmically concave functions. We consider a
vast class of logarithmically concave functions whose superlevel sets are concentric
ellipsoids. For a fixed function from this class, we consider the set of all its
“affine” positions. For any log-concave function f on Rd, we consider functions
belonging to this set of “affine” positions, and find the one with the minimal
integral under the condition that it is pointwise greater than or equal to f.
We study the properties of existence and uniqueness of the solution to this problem.
For any s∈[0,+∞), we consider the construction dual to the recently defined John
s-function (Ivanov and Naszódi in Functional John ellipsoids. arXiv preprint:
arXiv:2006.09934, 2020). We prove that such a construction determines a unique
function and call it the Löwner s-function of f. We study the Löwner s-functions
as s tends to zero and to infinity. Finally, extending the notion of the outer
volume ratio, we define the outer integral ratio of a log-concave function and
give an asymptotically tight bound on it.'
acknowledgement: The authors acknowledge the support of the grant of the Russian Government
N 075-15-2019-1926.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Grigory
full_name: Ivanov, Grigory
id: 87744F66-5C6F-11EA-AFE0-D16B3DDC885E
last_name: Ivanov
- first_name: Igor
full_name: Tsiutsiurupa, Igor
last_name: Tsiutsiurupa
citation:
ama: Ivanov G, Tsiutsiurupa I. Functional Löwner ellipsoids. Journal of Geometric
Analysis. 2021;31:11493-11528. doi:10.1007/s12220-021-00691-4
apa: Ivanov, G., & Tsiutsiurupa, I. (2021). Functional Löwner ellipsoids. Journal
of Geometric Analysis. Springer. https://doi.org/10.1007/s12220-021-00691-4
chicago: Ivanov, Grigory, and Igor Tsiutsiurupa. “Functional Löwner Ellipsoids.”
Journal of Geometric Analysis. Springer, 2021. https://doi.org/10.1007/s12220-021-00691-4.
ieee: G. Ivanov and I. Tsiutsiurupa, “Functional Löwner ellipsoids,” Journal
of Geometric Analysis, vol. 31. Springer, pp. 11493–11528, 2021.
ista: Ivanov G, Tsiutsiurupa I. 2021. Functional Löwner ellipsoids. Journal of Geometric
Analysis. 31, 11493–11528.
mla: Ivanov, Grigory, and Igor Tsiutsiurupa. “Functional Löwner Ellipsoids.” Journal
of Geometric Analysis, vol. 31, Springer, 2021, pp. 11493–528, doi:10.1007/s12220-021-00691-4.
short: G. Ivanov, I. Tsiutsiurupa, Journal of Geometric Analysis 31 (2021) 11493–11528.
date_created: 2021-06-13T22:01:32Z
date_published: 2021-05-31T00:00:00Z
date_updated: 2023-08-08T14:04:49Z
day: '31'
department:
- _id: UlWa
doi: 10.1007/s12220-021-00691-4
external_id:
arxiv:
- '2008.09543'
isi:
- '000656507500001'
intvolume: ' 31'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2008.09543
month: '05'
oa: 1
oa_version: Preprint
page: 11493-11528
publication: Journal of Geometric Analysis
publication_identifier:
eissn:
- 1559-002X
issn:
- 1050-6926
publication_status: published
publisher: Springer
quality_controlled: '1'
scopus_import: '1'
status: public
title: Functional Löwner ellipsoids
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 31
year: '2021'
...
---
_id: '9549'
abstract:
- lang: eng
text: 'AMPA receptors (AMPARs) mediate the majority of excitatory transmission in
the brain and enable the synaptic plasticity that underlies learning1. A diverse
array of AMPAR signalling complexes are established by receptor auxiliary subunits,
which associate with the AMPAR in various combinations to modulate trafficking,
gating and synaptic strength2. However, their mechanisms of action are poorly
understood. Here we determine cryo-electron microscopy structures of the heteromeric
GluA1–GluA2 receptor assembled with both TARP-γ8 and CNIH2, the predominant AMPAR
complex in the forebrain, in both resting and active states. Two TARP-γ8 and two
CNIH2 subunits insert at distinct sites beneath the ligand-binding domains of
the receptor, with site-specific lipids shaping each interaction and affecting
the gating regulation of the AMPARs. Activation of the receptor leads to asymmetry
between GluA1 and GluA2 along the ion conduction path and an outward expansion
of the channel triggers counter-rotations of both auxiliary subunit pairs, promoting
the active-state conformation. In addition, both TARP-γ8 and CNIH2 pivot towards
the pore exit upon activation, extending their reach for cytoplasmic receptor
elements. CNIH2 achieves this through its uniquely extended M2 helix, which has
transformed this endoplasmic reticulum-export factor into a powerful AMPAR modulator
that is capable of providing hippocampal pyramidal neurons with their integrative
synaptic properties. '
acknowledgement: We thank members of the Greger laboratory, B. Herguedas, J. Krieger
and J.-N. Dohrke for comments on the manuscript; J. Krieger and J.-N. Dohrke for
discussion, J. Krieger for help with the normal mode analysis, B. Köhegyi for help
with cryo-EM imaging, V. Chang and K. Suzuki for helping to generate the CNIH2-1D4-HA
stable cell line, M. Carvalho for assistance at early stages of this project, the
LMB scientific computing and the cryo-EM facility for support, P. Emsley for help
with model building, T. Nakane for helpful comments with RELION 3.1 and R. Warshamanage
for helping with EMDA cryo-EM-map processing. We acknowledge the Diamond Light Source
for access and support of the Cryo-EM facilities at the UK national electron bio10
imaging centre (eBIC), proposal EM17434, funded by the Wellcome Trust, MRC and BBSRC.
This work was supported by grants from the Medical Research Council, as part of
United Kingdom Research and Innovation (also known as UK Research and Innovation)
(MC_U105174197) and BBSRC (BB/N002113/1) to I.H.G.
article_processing_charge: No
article_type: original
author:
- first_name: Danyang
full_name: Zhang, Danyang
last_name: Zhang
- first_name: Jake
full_name: Watson, Jake
id: 63836096-4690-11EA-BD4E-32803DDC885E
last_name: Watson
orcid: 0000-0002-8698-3823
- first_name: Peter M.
full_name: Matthews, Peter M.
last_name: Matthews
- first_name: Ondrej
full_name: Cais, Ondrej
last_name: Cais
- first_name: Ingo H.
full_name: Greger, Ingo H.
last_name: Greger
citation:
ama: Zhang D, Watson J, Matthews PM, Cais O, Greger IH. Gating and modulation of
a hetero-octameric AMPA glutamate receptor. Nature. 2021;594:454-458. doi:10.1038/s41586-021-03613-0
apa: Zhang, D., Watson, J., Matthews, P. M., Cais, O., & Greger, I. H. (2021).
Gating and modulation of a hetero-octameric AMPA glutamate receptor. Nature.
Springer Nature. https://doi.org/10.1038/s41586-021-03613-0
chicago: Zhang, Danyang, Jake Watson, Peter M. Matthews, Ondrej Cais, and Ingo H.
Greger. “Gating and Modulation of a Hetero-Octameric AMPA Glutamate Receptor.”
Nature. Springer Nature, 2021. https://doi.org/10.1038/s41586-021-03613-0.
ieee: D. Zhang, J. Watson, P. M. Matthews, O. Cais, and I. H. Greger, “Gating and
modulation of a hetero-octameric AMPA glutamate receptor,” Nature, vol.
594. Springer Nature, pp. 454–458, 2021.
ista: Zhang D, Watson J, Matthews PM, Cais O, Greger IH. 2021. Gating and modulation
of a hetero-octameric AMPA glutamate receptor. Nature. 594, 454–458.
mla: Zhang, Danyang, et al. “Gating and Modulation of a Hetero-Octameric AMPA Glutamate
Receptor.” Nature, vol. 594, Springer Nature, 2021, pp. 454–58, doi:10.1038/s41586-021-03613-0.
short: D. Zhang, J. Watson, P.M. Matthews, O. Cais, I.H. Greger, Nature 594 (2021)
454–458.
date_created: 2021-06-13T22:01:33Z
date_published: 2021-06-02T00:00:00Z
date_updated: 2023-08-08T13:59:51Z
day: '02'
department:
- _id: PeJo
doi: 10.1038/s41586-021-03613-0
external_id:
isi:
- '000657238100003'
pmid:
- '34079129'
intvolume: ' 594'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1038/s41586-021-03613-0
month: '06'
oa: 1
oa_version: Published Version
page: 454-458
pmid: 1
publication: Nature
publication_identifier:
eissn:
- 1476-4687
issn:
- 0028-0836
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Gating and modulation of a hetero-octameric AMPA glutamate receptor
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 594
year: '2021'
...
---
_id: '9569'
abstract:
- lang: eng
text: We report the synthesis and characterization of graphene functionalized with
iron (Fe3+) oxide (G-Fe3O4) nanohybrids for radio-frequency magnetic hyperthermia
application. We adopted the wet chemical procedure, using various contents of
Fe3O4 (magnetite) from 0–100% for making two-dimensional graphene–Fe3O4 nanohybrids.
The homogeneous dispersal of Fe3O4 nanoparticles decorated on the graphene surface
combined with their biocompatibility and high thermal conductivity make them an
excellent material for magnetic hyperthermia. The morphological and magnetic properties
of the nanohybrids were studied using scanning electron microscopy (SEM) and a
vibrating sample magnetometer (VSM), respectively. The smart magnetic platforms
were exposed to an alternating current (AC) magnetic field of 633 kHz and of strength
9.1 mT for studying their hyperthermic performance. The localized antitumor effects
were investigated with artificial neural network modeling. A neural net time-series
model was developed for the assessment of the best nanohybrid composition to serve
the purpose with an accuracy close to 100%. Six Nonlinear Autoregressive with
External Input (NARX) models were obtained, one for each of the components. The
assessment of the accuracy of the predicted results has been done on the basis
of Mean Squared Error (MSE). The highest Mean Squared Error value was obtained
for the nanohybrid containing 45% magnetite and 55% graphene (F45G55) in the training
phase i.e., 0.44703, which is where the model achieved optimal results after 71
epochs. The F45G55 nanohybrid was found to be the best for hyperthermia applications
in low dosage with the highest specific absorption rate (SAR) and mean squared
error values.
acknowledgement: The research is funded by Higher Education Commission (HEC) Pakistan
under start-up research grant program (SRGP) Project no. 2454.
article_processing_charge: No
article_type: original
author:
- first_name: M. S.
full_name: Dar, M. S.
last_name: Dar
- first_name: Khush Bakhat
full_name: Akram, Khush Bakhat
last_name: Akram
- first_name: Ayesha
full_name: Sohail, Ayesha
last_name: Sohail
- first_name: Fatima
full_name: Arif, Fatima
last_name: Arif
- first_name: Fatemeh
full_name: Zabihi, Fatemeh
last_name: Zabihi
- first_name: Shengyuan
full_name: Yang, Shengyuan
last_name: Yang
- first_name: Shamsa
full_name: Munir, Shamsa
last_name: Munir
- first_name: Meifang
full_name: Zhu, Meifang
last_name: Zhu
- first_name: M.
full_name: Abid, M.
last_name: Abid
- first_name: Muhammad
full_name: Nauman, Muhammad
id: 32c21954-2022-11eb-9d5f-af9f93c24e71
last_name: Nauman
orcid: 0000-0002-2111-4846
citation:
ama: Dar MS, Akram KB, Sohail A, et al. Heat induction in two-dimensional graphene–Fe3O4
nanohybrids for magnetic hyperthermia applications with artificial neural network
modeling. RSC Advances. 2021;11(35):21702-21715. doi:10.1039/d1ra03428f
apa: Dar, M. S., Akram, K. B., Sohail, A., Arif, F., Zabihi, F., Yang, S., … Nauman,
M. (2021). Heat induction in two-dimensional graphene–Fe3O4 nanohybrids for magnetic
hyperthermia applications with artificial neural network modeling. RSC Advances.
Royal Society of Chemistry. https://doi.org/10.1039/d1ra03428f
chicago: Dar, M. S., Khush Bakhat Akram, Ayesha Sohail, Fatima Arif, Fatemeh Zabihi,
Shengyuan Yang, Shamsa Munir, Meifang Zhu, M. Abid, and Muhammad Nauman. “Heat
Induction in Two-Dimensional Graphene–Fe3O4 Nanohybrids for Magnetic Hyperthermia
Applications with Artificial Neural Network Modeling.” RSC Advances. Royal
Society of Chemistry, 2021. https://doi.org/10.1039/d1ra03428f.
ieee: M. S. Dar et al., “Heat induction in two-dimensional graphene–Fe3O4
nanohybrids for magnetic hyperthermia applications with artificial neural network
modeling,” RSC Advances, vol. 11, no. 35. Royal Society of Chemistry, pp.
21702–21715, 2021.
ista: Dar MS, Akram KB, Sohail A, Arif F, Zabihi F, Yang S, Munir S, Zhu M, Abid
M, Nauman M. 2021. Heat induction in two-dimensional graphene–Fe3O4 nanohybrids
for magnetic hyperthermia applications with artificial neural network modeling.
RSC Advances. 11(35), 21702–21715.
mla: Dar, M. S., et al. “Heat Induction in Two-Dimensional Graphene–Fe3O4 Nanohybrids
for Magnetic Hyperthermia Applications with Artificial Neural Network Modeling.”
RSC Advances, vol. 11, no. 35, Royal Society of Chemistry, 2021, pp. 21702–15,
doi:10.1039/d1ra03428f.
short: M.S. Dar, K.B. Akram, A. Sohail, F. Arif, F. Zabihi, S. Yang, S. Munir, M.
Zhu, M. Abid, M. Nauman, RSC Advances 11 (2021) 21702–21715.
date_created: 2021-06-19T07:27:45Z
date_published: 2021-06-18T00:00:00Z
date_updated: 2024-10-21T06:02:02Z
day: '18'
ddc:
- '540'
department:
- _id: KiMo
doi: 10.1039/d1ra03428f
external_id:
isi:
- '000665644000048'
file:
- access_level: open_access
checksum: cd582d67ace7151078e46b3a896871a9
content_type: application/pdf
creator: asandaue
date_created: 2021-06-23T13:09:34Z
date_updated: 2021-06-23T13:09:34Z
file_id: '9596'
file_name: 2021_RSCAdvances_Dar.pdf
file_size: 2114557
relation: main_file
success: 1
file_date_updated: 2021-06-23T13:09:34Z
has_accepted_license: '1'
intvolume: ' 11'
isi: 1
issue: '35'
language:
- iso: eng
license: https://creativecommons.org/licenses/by/3.0/
month: '06'
oa: 1
oa_version: Published Version
page: 21702-21715
publication: RSC Advances
publication_identifier:
eissn:
- 2046-2069
publication_status: published
publisher: Royal Society of Chemistry
quality_controlled: '1'
scopus_import: '1'
status: public
title: Heat induction in two-dimensional graphene–Fe3O4 nanohybrids for magnetic hyperthermia
applications with artificial neural network modeling
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/3.0/legalcode
name: Creative Commons Attribution 3.0 Unported (CC BY 3.0)
short: CC BY (3.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 11
year: '2021'
...
---
_id: '9570'
abstract:
- lang: eng
text: We present conductance-matrix measurements in long, three-terminal hybrid
superconductor-semiconductor nanowires, and compare with theoretical predictions
of a magnetic-field-driven, topological quantum phase transition. By examining
the nonlocal conductance, we identify the closure of the excitation gap in the
bulk of the semiconductor before the emergence of zero-bias peaks, ruling out
spurious gap-closure signatures from localized states. We observe that after the
gap closes, nonlocal signals and zero-bias peaks fluctuate strongly at both ends,
inconsistent with a simple picture of clean topological superconductivity.
acknowledgement: We acknowledge insightful discussions with K. Flensberg, E. B. Hansen,
T. Karzig, R. Lutchyn, D. Pikulin, E. Prada, and R. Aguado. This work was supported
by Microsoft Project Q and the Danmarks Grundforskningsfond. C.M.M. acknowledges
support from the Villum Fonden. A.P.H. and L.C. contributed equally to this work.
article_number: '235201'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Denise
full_name: Puglia, Denise
id: 4D495994-AE37-11E9-AC72-31CAE5697425
last_name: Puglia
orcid: 0000-0003-1144-2763
- first_name: E. A.
full_name: Martinez, E. A.
last_name: Martinez
- first_name: G. C.
full_name: Ménard, G. C.
last_name: Ménard
- first_name: A.
full_name: Pöschl, A.
last_name: Pöschl
- first_name: S.
full_name: Gronin, S.
last_name: Gronin
- first_name: G. C.
full_name: Gardner, G. C.
last_name: Gardner
- first_name: R.
full_name: Kallaher, R.
last_name: Kallaher
- first_name: M. J.
full_name: Manfra, M. J.
last_name: Manfra
- first_name: C. M.
full_name: Marcus, C. M.
last_name: Marcus
- first_name: Andrew P
full_name: Higginbotham, Andrew P
id: 4AD6785A-F248-11E8-B48F-1D18A9856A87
last_name: Higginbotham
orcid: 0000-0003-2607-2363
- first_name: L.
full_name: Casparis, L.
last_name: Casparis
citation:
ama: Puglia D, Martinez EA, Ménard GC, et al. Closing of the induced gap in a hybrid
superconductor-semiconductor nanowire. Physical Review B. 2021;103(23).
doi:10.1103/PhysRevB.103.235201
apa: Puglia, D., Martinez, E. A., Ménard, G. C., Pöschl, A., Gronin, S., Gardner,
G. C., … Casparis, L. (2021). Closing of the induced gap in a hybrid superconductor-semiconductor
nanowire. Physical Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.103.235201
chicago: Puglia, Denise, E. A. Martinez, G. C. Ménard, A. Pöschl, S. Gronin, G.
C. Gardner, R. Kallaher, et al. “Closing of the Induced Gap in a Hybrid Superconductor-Semiconductor
Nanowire.” Physical Review B. American Physical Society, 2021. https://doi.org/10.1103/PhysRevB.103.235201.
ieee: D. Puglia et al., “Closing of the induced gap in a hybrid superconductor-semiconductor
nanowire,” Physical Review B, vol. 103, no. 23. American Physical Society,
2021.
ista: Puglia D, Martinez EA, Ménard GC, Pöschl A, Gronin S, Gardner GC, Kallaher
R, Manfra MJ, Marcus CM, Higginbotham AP, Casparis L. 2021. Closing of the induced
gap in a hybrid superconductor-semiconductor nanowire. Physical Review B. 103(23),
235201.
mla: Puglia, Denise, et al. “Closing of the Induced Gap in a Hybrid Superconductor-Semiconductor
Nanowire.” Physical Review B, vol. 103, no. 23, 235201, American Physical
Society, 2021, doi:10.1103/PhysRevB.103.235201.
short: D. Puglia, E.A. Martinez, G.C. Ménard, A. Pöschl, S. Gronin, G.C. Gardner,
R. Kallaher, M.J. Manfra, C.M. Marcus, A.P. Higginbotham, L. Casparis, Physical
Review B 103 (2021).
date_created: 2021-06-20T22:01:33Z
date_published: 2021-06-15T00:00:00Z
date_updated: 2025-07-10T12:01:53Z
day: '15'
department:
- _id: AnHi
doi: 10.1103/PhysRevB.103.235201
external_id:
arxiv:
- '2006.01275'
isi:
- '000661512500002'
intvolume: ' 103'
isi: 1
issue: '23'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2006.01275
month: '06'
oa: 1
oa_version: Preprint
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
record:
- id: '13080'
relation: research_data
status: public
scopus_import: '1'
status: public
title: Closing of the induced gap in a hybrid superconductor-semiconductor nanowire
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 103
year: '2021'
...
---
_id: '9571'
abstract:
- lang: eng
text: As the size and complexity of models and datasets grow, so does the need for
communication-efficient variants of stochastic gradient descent that can be deployed
to perform parallel model training. One popular communication-compression method
for data-parallel SGD is QSGD (Alistarh et al., 2017), which quantizes and encodes
gradients to reduce communication costs. The baseline variant of QSGD provides
strong theoretical guarantees, however, for practical purposes, the authors proposed
a heuristic variant which we call QSGDinf, which demonstrated impressive empirical
gains for distributed training of large neural networks. In this paper, we build
on this work to propose a new gradient quantization scheme, and show that it has
both stronger theoretical guarantees than QSGD, and matches and exceeds the empirical
performance of the QSGDinf heuristic and of other compression methods.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Ali
full_name: Ramezani-Kebrya, Ali
last_name: Ramezani-Kebrya
- first_name: Fartash
full_name: Faghri, Fartash
last_name: Faghri
- first_name: Ilya
full_name: Markov, Ilya
last_name: Markov
- first_name: Vitalii
full_name: Aksenov, Vitalii
id: 2980135A-F248-11E8-B48F-1D18A9856A87
last_name: Aksenov
- first_name: Dan-Adrian
full_name: Alistarh, Dan-Adrian
id: 4A899BFC-F248-11E8-B48F-1D18A9856A87
last_name: Alistarh
orcid: 0000-0003-3650-940X
- first_name: Daniel M.
full_name: Roy, Daniel M.
last_name: Roy
citation:
ama: 'Ramezani-Kebrya A, Faghri F, Markov I, Aksenov V, Alistarh D-A, Roy DM. NUQSGD:
Provably communication-efficient data-parallel SGD via nonuniform quantization.
Journal of Machine Learning Research. 2021;22(114):1−43.'
apa: 'Ramezani-Kebrya, A., Faghri, F., Markov, I., Aksenov, V., Alistarh, D.-A.,
& Roy, D. M. (2021). NUQSGD: Provably communication-efficient data-parallel
SGD via nonuniform quantization. Journal of Machine Learning Research.
Journal of Machine Learning Research.'
chicago: 'Ramezani-Kebrya, Ali, Fartash Faghri, Ilya Markov, Vitalii Aksenov, Dan-Adrian
Alistarh, and Daniel M. Roy. “NUQSGD: Provably Communication-Efficient Data-Parallel
SGD via Nonuniform Quantization.” Journal of Machine Learning Research.
Journal of Machine Learning Research, 2021.'
ieee: 'A. Ramezani-Kebrya, F. Faghri, I. Markov, V. Aksenov, D.-A. Alistarh, and
D. M. Roy, “NUQSGD: Provably communication-efficient data-parallel SGD via nonuniform
quantization,” Journal of Machine Learning Research, vol. 22, no. 114.
Journal of Machine Learning Research, p. 1−43, 2021.'
ista: 'Ramezani-Kebrya A, Faghri F, Markov I, Aksenov V, Alistarh D-A, Roy DM. 2021.
NUQSGD: Provably communication-efficient data-parallel SGD via nonuniform quantization.
Journal of Machine Learning Research. 22(114), 1−43.'
mla: 'Ramezani-Kebrya, Ali, et al. “NUQSGD: Provably Communication-Efficient Data-Parallel
SGD via Nonuniform Quantization.” Journal of Machine Learning Research,
vol. 22, no. 114, Journal of Machine Learning Research, 2021, p. 1−43.'
short: A. Ramezani-Kebrya, F. Faghri, I. Markov, V. Aksenov, D.-A. Alistarh, D.M.
Roy, Journal of Machine Learning Research 22 (2021) 1−43.
corr_author: '1'
date_created: 2021-06-20T22:01:33Z
date_published: 2021-04-01T00:00:00Z
date_updated: 2025-07-10T12:01:54Z
day: '01'
ddc:
- '000'
department:
- _id: DaAl
external_id:
arxiv:
- '1908.06077'
file:
- access_level: open_access
checksum: 6428aa8bcb67768b6949c99b55d5281d
content_type: application/pdf
creator: asandaue
date_created: 2021-06-23T07:09:41Z
date_updated: 2021-06-23T07:09:41Z
file_id: '9595'
file_name: 2021_JournalOfMachineLearningResearch_Ramezani-Kebrya.pdf
file_size: 11237154
relation: main_file
success: 1
file_date_updated: 2021-06-23T07:09:41Z
has_accepted_license: '1'
intvolume: ' 22'
issue: '114'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.jmlr.org/papers/v22/20-255.html
month: '04'
oa: 1
oa_version: Published Version
page: 1−43
publication: Journal of Machine Learning Research
publication_identifier:
eissn:
- 1533-7928
issn:
- 1532-4435
publication_status: published
publisher: Journal of Machine Learning Research
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'NUQSGD: Provably communication-efficient data-parallel SGD via nonuniform
quantization'
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 22
year: '2021'
...
---
_id: '9572'
abstract:
- lang: eng
text: We prove that every n-vertex tournament G has an acyclic subgraph with chromatic
number at least n5/9−o(1), while there exists an n-vertex tournament G whose every
acyclic subgraph has chromatic number at most n3/4+o(1). This establishes in a
strong form a conjecture of Nassar and Yuster and improves on another result of
theirs. Our proof combines probabilistic and spectral techniques together with
some additional ideas. In particular, we prove a lemma showing that every tournament
with many transitive subtournaments has a large subtournament that is almost transitive.
This may be of independent interest.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Jacob
full_name: Fox, Jacob
last_name: Fox
- first_name: Matthew Alan
full_name: Kwan, Matthew Alan
id: 5fca0887-a1db-11eb-95d1-ca9d5e0453b3
last_name: Kwan
orcid: 0000-0002-4003-7567
- first_name: Benny
full_name: Sudakov, Benny
last_name: Sudakov
citation:
ama: Fox J, Kwan MA, Sudakov B. Acyclic subgraphs of tournaments with high chromatic
number. Bulletin of the London Mathematical Society. 2021;53(2):619-630.
doi:10.1112/blms.12446
apa: Fox, J., Kwan, M. A., & Sudakov, B. (2021). Acyclic subgraphs of tournaments
with high chromatic number. Bulletin of the London Mathematical Society.
Wiley. https://doi.org/10.1112/blms.12446
chicago: Fox, Jacob, Matthew Alan Kwan, and Benny Sudakov. “Acyclic Subgraphs of
Tournaments with High Chromatic Number.” Bulletin of the London Mathematical
Society. Wiley, 2021. https://doi.org/10.1112/blms.12446.
ieee: J. Fox, M. A. Kwan, and B. Sudakov, “Acyclic subgraphs of tournaments with
high chromatic number,” Bulletin of the London Mathematical Society, vol.
53, no. 2. Wiley, pp. 619–630, 2021.
ista: Fox J, Kwan MA, Sudakov B. 2021. Acyclic subgraphs of tournaments with high
chromatic number. Bulletin of the London Mathematical Society. 53(2), 619–630.
mla: Fox, Jacob, et al. “Acyclic Subgraphs of Tournaments with High Chromatic Number.”
Bulletin of the London Mathematical Society, vol. 53, no. 2, Wiley, 2021,
pp. 619–30, doi:10.1112/blms.12446.
short: J. Fox, M.A. Kwan, B. Sudakov, Bulletin of the London Mathematical Society
53 (2021) 619–630.
date_created: 2021-06-21T06:11:56Z
date_published: 2021-04-03T00:00:00Z
date_updated: 2023-02-23T14:01:21Z
day: '03'
doi: 10.1112/blms.12446
extern: '1'
external_id:
arxiv:
- '1912.07722'
intvolume: ' 53'
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1912.07722
month: '04'
oa: 1
oa_version: Preprint
page: 619-630
publication: Bulletin of the London Mathematical Society
publication_identifier:
eissn:
- 1469-2120
issn:
- 0024-6093
publication_status: published
publisher: Wiley
quality_controlled: '1'
scopus_import: '1'
status: public
title: Acyclic subgraphs of tournaments with high chromatic number
type: journal_article
user_id: 6785fbc1-c503-11eb-8a32-93094b40e1cf
volume: 53
year: '2021'
...