---
_id: '997'
abstract:
- lang: eng
text: Recently it was shown that molecules rotating in superfluid helium can be
described in terms of the angulon quasiparticles (Phys. Rev. Lett. 118, 095301
(2017)). Here we demonstrate that in the experimentally realized regime the angulon
can be seen as a point charge on a 2-sphere interacting with a gauge field of
a non-abelian magnetic monopole. Unlike in several other settings, the gauge fields
of the angulon problem emerge in the real coordinate space, as opposed to the
momentum space or some effective parameter space. Furthermore, we find a topological
transition associated with making the monopole abelian, which takes place in the
vicinity of the previously reported angulon instabilities. These results pave
the way for studying topological phenomena in experiments on molecules trapped
in superfluid helium nanodroplets, as well as on other realizations of orbital
impurity problems.
article_number: '235301'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Enderalp
full_name: Yakaboylu, Enderalp
id: 38CB71F6-F248-11E8-B48F-1D18A9856A87
last_name: Yakaboylu
orcid: 0000-0001-5973-0874
- first_name: Andreas
full_name: Deuchert, Andreas
id: 4DA65CD0-F248-11E8-B48F-1D18A9856A87
last_name: Deuchert
orcid: 0000-0003-3146-6746
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
citation:
ama: Yakaboylu E, Deuchert A, Lemeshko M. Emergence of non-abelian magnetic monopoles
in a quantum impurity problem. Physical Review Letters. 2017;119(23). doi:10.1103/PhysRevLett.119.235301
apa: Yakaboylu, E., Deuchert, A., & Lemeshko, M. (2017). Emergence of non-abelian
magnetic monopoles in a quantum impurity problem. Physical Review Letters.
American Physical Society. https://doi.org/10.1103/PhysRevLett.119.235301
chicago: Yakaboylu, Enderalp, Andreas Deuchert, and Mikhail Lemeshko. “Emergence
of Non-Abelian Magnetic Monopoles in a Quantum Impurity Problem.” Physical
Review Letters. American Physical Society, 2017. https://doi.org/10.1103/PhysRevLett.119.235301.
ieee: E. Yakaboylu, A. Deuchert, and M. Lemeshko, “Emergence of non-abelian magnetic
monopoles in a quantum impurity problem,” Physical Review Letters, vol.
119, no. 23. American Physical Society, 2017.
ista: Yakaboylu E, Deuchert A, Lemeshko M. 2017. Emergence of non-abelian magnetic
monopoles in a quantum impurity problem. Physical Review Letters. 119(23), 235301.
mla: Yakaboylu, Enderalp, et al. “Emergence of Non-Abelian Magnetic Monopoles in
a Quantum Impurity Problem.” Physical Review Letters, vol. 119, no. 23,
235301, American Physical Society, 2017, doi:10.1103/PhysRevLett.119.235301.
short: E. Yakaboylu, A. Deuchert, M. Lemeshko, Physical Review Letters 119 (2017).
corr_author: '1'
date_created: 2018-12-11T11:49:36Z
date_published: 2017-12-06T00:00:00Z
date_updated: 2025-04-14T07:26:54Z
day: '06'
department:
- _id: MiLe
- _id: RoSe
doi: 10.1103/PhysRevLett.119.235301
ec_funded: 1
external_id:
arxiv:
- '1705.05162'
isi:
- '000417132100007'
intvolume: ' 119'
isi: 1
issue: '23'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1705.05162
month: '12'
oa: 1
oa_version: Preprint
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
- _id: 25C6DC12-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '694227'
name: Analysis of quantum many-body systems
- _id: 26031614-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P29902
name: Quantum rotations in the presence of a many-body environment
publication: Physical Review Letters
publication_identifier:
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
publist_id: '6401'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Emergence of non-abelian magnetic monopoles in a quantum impurity problem
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 119
year: '2017'
...
---
_id: '998'
abstract:
- lang: eng
text: 'A major open problem on the road to artificial intelligence is the development
of incrementally learning systems that learn about more and more concepts over
time from a stream of data. In this work, we introduce a new training strategy,
iCaRL, that allows learning in such a class-incremental way: only the training
data for a small number of classes has to be present at the same time and new
classes can be added progressively. iCaRL learns strong classifiers and a data
representation simultaneously. This distinguishes it from earlier works that were
fundamentally limited to fixed data representations and therefore incompatible
with deep learning architectures. We show by experiments on CIFAR-100 and ImageNet
ILSVRC 2012 data that iCaRL can learn many classes incrementally over a long period
of time where other strategies quickly fail. '
article_processing_charge: No
arxiv: 1
author:
- first_name: Sylvestre Alvise
full_name: Rebuffi, Sylvestre Alvise
last_name: Rebuffi
- first_name: Alexander
full_name: Kolesnikov, Alexander
id: 2D157DB6-F248-11E8-B48F-1D18A9856A87
last_name: Kolesnikov
- first_name: Georg
full_name: Sperl, Georg
id: 4DD40360-F248-11E8-B48F-1D18A9856A87
last_name: Sperl
- first_name: Christoph
full_name: Lampert, Christoph
id: 40C20FD2-F248-11E8-B48F-1D18A9856A87
last_name: Lampert
orcid: 0000-0001-8622-7887
citation:
ama: 'Rebuffi SA, Kolesnikov A, Sperl G, Lampert C. iCaRL: Incremental classifier
and representation learning. In: Vol 2017. IEEE; 2017:5533-5542. doi:10.1109/CVPR.2017.587'
apa: 'Rebuffi, S. A., Kolesnikov, A., Sperl, G., & Lampert, C. (2017). iCaRL:
Incremental classifier and representation learning (Vol. 2017, pp. 5533–5542).
Presented at the CVPR: Computer Vision and Pattern Recognition, Honolulu, HA,
United States: IEEE. https://doi.org/10.1109/CVPR.2017.587'
chicago: 'Rebuffi, Sylvestre Alvise, Alexander Kolesnikov, Georg Sperl, and Christoph
Lampert. “ICaRL: Incremental Classifier and Representation Learning,” 2017:5533–42.
IEEE, 2017. https://doi.org/10.1109/CVPR.2017.587.'
ieee: 'S. A. Rebuffi, A. Kolesnikov, G. Sperl, and C. Lampert, “iCaRL: Incremental
classifier and representation learning,” presented at the CVPR: Computer Vision
and Pattern Recognition, Honolulu, HA, United States, 2017, vol. 2017, pp. 5533–5542.'
ista: 'Rebuffi SA, Kolesnikov A, Sperl G, Lampert C. 2017. iCaRL: Incremental classifier
and representation learning. CVPR: Computer Vision and Pattern Recognition vol.
2017, 5533–5542.'
mla: 'Rebuffi, Sylvestre Alvise, et al. ICaRL: Incremental Classifier and Representation
Learning. Vol. 2017, IEEE, 2017, pp. 5533–42, doi:10.1109/CVPR.2017.587.'
short: S.A. Rebuffi, A. Kolesnikov, G. Sperl, C. Lampert, in:, IEEE, 2017, pp. 5533–5542.
conference:
end_date: 2017-07-26
location: Honolulu, HA, United States
name: 'CVPR: Computer Vision and Pattern Recognition'
start_date: 2017-07-21
date_created: 2018-12-11T11:49:37Z
date_published: 2017-04-14T00:00:00Z
date_updated: 2025-06-04T08:18:32Z
day: '14'
department:
- _id: ChLa
- _id: ChWo
doi: 10.1109/CVPR.2017.587
ec_funded: 1
external_id:
arxiv:
- '1611.07725'
isi:
- '000418371405066'
intvolume: ' 2017'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1611.07725
month: '04'
oa: 1
oa_version: Submitted Version
page: 5533 - 5542
project:
- _id: 2532554C-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '308036'
name: Lifelong Learning of Visual Scene Understanding
publication_identifier:
isbn:
- 978-153860457-1
publication_status: published
publisher: IEEE
publist_id: '6400'
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'iCaRL: Incremental classifier and representation learning'
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 2017
year: '2017'
...
---
_id: '999'
abstract:
- lang: eng
text: 'In multi-task learning, a learner is given a collection of prediction tasks
and needs to solve all of them. In contrast to previous work, which required that
annotated training data must be available for all tasks, we consider a new setting,
in which for some tasks, potentially most of them, only unlabeled training data
is provided. Consequently, to solve all tasks, information must be transferred
between tasks with labels and tasks without labels. Focusing on an instance-based
transfer method we analyze two variants of this setting: when the set of labeled
tasks is fixed, and when it can be actively selected by the learner. We state
and prove a generalization bound that covers both scenarios and derive from it
an algorithm for making the choice of labeled tasks (in the active case) and for
transferring information between the tasks in a principled way. We also illustrate
the effectiveness of the algorithm on synthetic and real data. '
alternative_title:
- PMLR
article_processing_charge: No
arxiv: 1
author:
- first_name: Anastasia
full_name: Pentina, Anastasia
id: 42E87FC6-F248-11E8-B48F-1D18A9856A87
last_name: Pentina
- first_name: Christoph
full_name: Lampert, Christoph
id: 40C20FD2-F248-11E8-B48F-1D18A9856A87
last_name: Lampert
orcid: 0000-0001-8622-7887
citation:
ama: 'Pentina A, Lampert C. Multi-task learning with labeled and unlabeled tasks.
In: Vol 70. ML Research Press; 2017:2807-2816.'
apa: 'Pentina, A., & Lampert, C. (2017). Multi-task learning with labeled and
unlabeled tasks (Vol. 70, pp. 2807–2816). Presented at the ICML: International
Conference on Machine Learning, Sydney, Australia: ML Research Press.'
chicago: Pentina, Anastasia, and Christoph Lampert. “Multi-Task Learning with Labeled
and Unlabeled Tasks,” 70:2807–16. ML Research Press, 2017.
ieee: 'A. Pentina and C. Lampert, “Multi-task learning with labeled and unlabeled
tasks,” presented at the ICML: International Conference on Machine Learning, Sydney,
Australia, 2017, vol. 70, pp. 2807–2816.'
ista: 'Pentina A, Lampert C. 2017. Multi-task learning with labeled and unlabeled
tasks. ICML: International Conference on Machine Learning, PMLR, vol. 70, 2807–2816.'
mla: Pentina, Anastasia, and Christoph Lampert. Multi-Task Learning with Labeled
and Unlabeled Tasks. Vol. 70, ML Research Press, 2017, pp. 2807–16.
short: A. Pentina, C. Lampert, in:, ML Research Press, 2017, pp. 2807–2816.
conference:
end_date: 2017-08-11
location: Sydney, Australia
name: 'ICML: International Conference on Machine Learning'
start_date: 2017-08-06
corr_author: '1'
date_created: 2018-12-11T11:49:37Z
date_published: 2017-06-08T00:00:00Z
date_updated: 2025-06-04T08:19:03Z
day: '08'
department:
- _id: ChLa
ec_funded: 1
external_id:
arxiv:
- '1602.06518'
isi:
- '000683309502093'
intvolume: ' 70'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1602.06518
month: '06'
oa: 1
oa_version: Submitted Version
page: 2807 - 2816
project:
- _id: 2532554C-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '308036'
name: Lifelong Learning of Visual Scene Understanding
publication_identifier:
isbn:
- '9781510855144'
publication_status: published
publisher: ML Research Press
publist_id: '6399'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Multi-task learning with labeled and unlabeled tasks
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 70
year: '2017'
...
---
_id: '373'
abstract:
- lang: eng
text: 'This review captures the synthesis, assembly, properties, and applications
of copper chalcogenide NCs, which have achieved significant research interest
in the last decade due to their compositional and structural versatility. The
outstanding functional properties of these materials stems from the relationship
between their band structure and defect concentration, including charge carrier
concentration and electronic conductivity character, which consequently affects
their optoelectronic, optical, and plasmonic properties. This, combined with several
metastable crystal phases and stoichiometries and the low energy of formation
of defects, makes the reproducible synthesis of these materials, with tunable
parameters, remarkable. Further to this, the review captures the progress of the
hierarchical assembly of these NCs, which bridges the link between their discrete
and collective properties. Their ubiquitous application set has cross-cut energy
conversion (photovoltaics, photocatalysis, thermoelectrics), energy storage (lithium-ion
batteries, hydrogen generation), emissive materials (plasmonics, LEDs, biolabelling),
sensors (electrochemical, biochemical), biomedical devices (magnetic resonance
imaging, X-ray computer tomography), and medical therapies (photochemothermal
therapies, immunotherapy, radiotherapy, and drug delivery). The confluence of
advances in the synthesis, assembly, and application of these NCs in the past
decade has the potential to significantly impact society, both economically and
environmentally. '
acknowledgement: C.C. and K.M.R. gratefully acknowledge support from Science Foundation
Ireland (SFI) under the Principal Investigator Program under Contract No. 11PI-1148.
This work was conducted under the framework of the Irish Government’s Programme
for Research in Third Level Institutions Cycle 5, National Development Plan 2007−2013
with the assistance of the European Regional Development Fund. A.S. gratefully acknowledges
Director’s Postdoctoral Fellowship support from the Los Alamos National Laboratory.
M.I., O.D., and A.C. gratefully acknowledge support from the European Regional Development
Funds and the Spanish MINECO Project BOOSTER (ENE2013-46624-C4-3-R). M.I. and O.D.
thank AGAUR for their Beatriu de Pinós postdoctoral grant (2013 BP-A00344) and Ph.D.
grant (2015 FI-B00810, 2016 FI-B100067), respectively.
article_processing_charge: No
article_type: review
author:
- first_name: Claudia
full_name: Coughlan, Claudia
last_name: Coughlan
- first_name: Maria
full_name: Ibanez Sabate, Maria
id: 43C61214-F248-11E8-B48F-1D18A9856A87
last_name: Ibanez Sabate
orcid: 0000-0001-5013-2843
- first_name: Oleksandr
full_name: Dobrozhan, Oleksandr
last_name: Dobrozhan
- first_name: Ajay
full_name: Singh, Ajay
last_name: Singh
- first_name: Andreu
full_name: Cabot, Andreu
last_name: Cabot
- first_name: Kevin
full_name: Ryan, Kevin
last_name: Ryan
citation:
ama: Coughlan C, Ibáñez M, Dobrozhan O, Singh A, Cabot A, Ryan K. Compound copper
chalcogenide nanocrystals. Chemical Reviews. 2017;117(9):5865-6109. doi:10.1021/acs.chemrev.6b00376
apa: Coughlan, C., Ibáñez, M., Dobrozhan, O., Singh, A., Cabot, A., & Ryan,
K. (2017). Compound copper chalcogenide nanocrystals. Chemical Reviews.
American Chemical Society. https://doi.org/10.1021/acs.chemrev.6b00376
chicago: Coughlan, Claudia, Maria Ibáñez, Oleksandr Dobrozhan, Ajay Singh, Andreu
Cabot, and Kevin Ryan. “Compound Copper Chalcogenide Nanocrystals.” Chemical
Reviews. American Chemical Society, 2017. https://doi.org/10.1021/acs.chemrev.6b00376.
ieee: C. Coughlan, M. Ibáñez, O. Dobrozhan, A. Singh, A. Cabot, and K. Ryan, “Compound
copper chalcogenide nanocrystals,” Chemical Reviews, vol. 117, no. 9. American
Chemical Society, pp. 5865–6109, 2017.
ista: Coughlan C, Ibáñez M, Dobrozhan O, Singh A, Cabot A, Ryan K. 2017. Compound
copper chalcogenide nanocrystals. Chemical Reviews. 117(9), 5865–6109.
mla: Coughlan, Claudia, et al. “Compound Copper Chalcogenide Nanocrystals.” Chemical
Reviews, vol. 117, no. 9, American Chemical Society, 2017, pp. 5865–6109,
doi:10.1021/acs.chemrev.6b00376.
short: C. Coughlan, M. Ibáñez, O. Dobrozhan, A. Singh, A. Cabot, K. Ryan, Chemical
Reviews 117 (2017) 5865–6109.
date_created: 2018-12-11T11:46:06Z
date_published: 2017-04-10T00:00:00Z
date_updated: 2024-03-05T12:17:59Z
day: '10'
doi: 10.1021/acs.chemrev.6b00376
extern: '1'
external_id:
pmid:
- '28394585'
intvolume: ' 117'
issue: '9'
language:
- iso: eng
month: '04'
oa_version: None
page: 5865 - 6109
pmid: 1
publication: Chemical Reviews
publication_identifier:
eissn:
- 1520-6890
issn:
- 0009-2665
publication_status: published
publisher: American Chemical Society
publist_id: '7456'
quality_controlled: '1'
status: public
title: Compound copper chalcogenide nanocrystals
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 117
year: '2017'
...
---
_id: '374'
abstract:
- lang: eng
text: The conversion of thermal energy to electricity and vice versa by means of
solid state thermoelectric devices is extremely appealing. However, its cost-effectiveness
is seriously hampered by the relatively high production cost and low efficiency
of current thermoelectric materials and devices. To overcome present challenges
and enable a successful deployment of thermoelectric systems in their wide application
range, materials with significantly improved performance need to be developed.
Nanostructuration can help in several ways to reach the very particular group
of properties required to achieve high thermoelectric performances. Nanodomains
inserted within a crystalline matrix can provide large charge carrier concentrations
without strongly influencing their mobility, thus allowing to reach very high
electrical conductivities. Nanostructured materials contain numerous grain boundaries
that efficiently scatter mid- and long-wavelength phonons thus reducing the thermal
conductivity. Furthermore, nanocrystalline domains can enhance the Seebeck coefficient
by modifying the density of states and/or providing type- and energy-dependent
charge carrier scattering. All these advantages can only be reached when engineering
a complex type of material, nanocomposites, with exquisite control over structural
and chemical parameters at multiple length scales. Since current conventional
nanomaterial production technologies lack such level of control, alternative strategies
need to be developed and adjusted to the specifics of the field. A particularly
suitable approach to produce nanocomposites with unique level of control over
their structural and compositional parameters is their bottom-up engineering from
solution-processed nanoparticles. In this work, we review the state-of-the-art
of this technology applied to the thermoelectric field, including the synthesis
of nanoparticles of suitable materials with precisely engineered composition and
surface chemistry, their combination and consolidation into nanostructured materials,
the strategies to electronically dope such materials and the attempts to fabricate
thermoelectric devices using nanoparticle-based nanopowders and inks.
acknowledgement: This work was supported by the European Regional Development Funds,
the Spanish Ministerio de Econom?a y Competitividad through the projects BOOSTER
(ENE2013-46624-C4-3-R) and SEHTOP (ENE2016-77798-C4-3-R). S. O. thanks AGAUR her
PhD grant. Y. L. and Y. Z. thank the China Scholarship Council for scholarship support.
M. I. acknowledges financial support by ETH Carrier Seed Grant (SEED-18 16-2) and
M. V. K. acknowledges partial financial support by the European Union (EU) via FP7
ERC Starting Grant 2012 (Project NANOSOLID, GA No. 306733).
article_processing_charge: No
article_type: original
author:
- first_name: Silvia
full_name: Ortega, Silvia
last_name: Ortega
- first_name: Maria
full_name: Ibanez Sabate, Maria
id: 43C61214-F248-11E8-B48F-1D18A9856A87
last_name: Ibanez Sabate
orcid: 0000-0001-5013-2843
- first_name: Yu
full_name: Liu, Yu
id: 2A70014E-F248-11E8-B48F-1D18A9856A87
last_name: Liu
orcid: 0000-0001-7313-6740
- first_name: Yu
full_name: Zhang, Yu
last_name: Zhang
- first_name: Maksym
full_name: Kovalenko, Maksym
last_name: Kovalenko
- first_name: Doris
full_name: Cadavid, Doris
last_name: Cadavid
- first_name: Andreu
full_name: Cabot, Andreu
last_name: Cabot
citation:
ama: Ortega S, Ibáñez M, Liu Y, et al. Bottom up engineering of thermoelectric nanomaterials
and devices from solution processed nanoparticle building blocks. Chemical
Society Reviews. 2017;46(12):3510-3528. doi:10.1039/c6cs00567e
apa: Ortega, S., Ibáñez, M., Liu, Y., Zhang, Y., Kovalenko, M., Cadavid, D., &
Cabot, A. (2017). Bottom up engineering of thermoelectric nanomaterials and devices
from solution processed nanoparticle building blocks. Chemical Society Reviews.
Royal Society of Chemistry. https://doi.org/10.1039/c6cs00567e
chicago: Ortega, Silvia, Maria Ibáñez, Yu Liu, Yu Zhang, Maksym Kovalenko, Doris
Cadavid, and Andreu Cabot. “Bottom up Engineering of Thermoelectric Nanomaterials
and Devices from Solution Processed Nanoparticle Building Blocks.” Chemical
Society Reviews. Royal Society of Chemistry, 2017. https://doi.org/10.1039/c6cs00567e.
ieee: S. Ortega et al., “Bottom up engineering of thermoelectric nanomaterials
and devices from solution processed nanoparticle building blocks,” Chemical
Society Reviews, vol. 46, no. 12. Royal Society of Chemistry, pp. 3510–3528,
2017.
ista: Ortega S, Ibáñez M, Liu Y, Zhang Y, Kovalenko M, Cadavid D, Cabot A. 2017.
Bottom up engineering of thermoelectric nanomaterials and devices from solution
processed nanoparticle building blocks. Chemical Society Reviews. 46(12), 3510–3528.
mla: Ortega, Silvia, et al. “Bottom up Engineering of Thermoelectric Nanomaterials
and Devices from Solution Processed Nanoparticle Building Blocks.” Chemical
Society Reviews, vol. 46, no. 12, Royal Society of Chemistry, 2017, pp. 3510–28,
doi:10.1039/c6cs00567e.
short: S. Ortega, M. Ibáñez, Y. Liu, Y. Zhang, M. Kovalenko, D. Cadavid, A. Cabot,
Chemical Society Reviews 46 (2017) 3510–3528.
corr_author: '1'
date_created: 2018-12-11T11:46:06Z
date_published: 2017-06-21T00:00:00Z
date_updated: 2024-10-09T20:58:15Z
day: '21'
doi: 10.1039/c6cs00567e
extern: '1'
external_id:
pmid:
- '28470243'
intvolume: ' 46'
issue: '12'
language:
- iso: eng
month: '06'
oa_version: None
page: 3510 - 3528
pmid: 1
publication: Chemical Society Reviews
publication_identifier:
eissn:
- 1460-4744
issn:
- 0306-0012
publication_status: published
publisher: Royal Society of Chemistry
publist_id: '7454'
quality_controlled: '1'
status: public
title: Bottom up engineering of thermoelectric nanomaterials and devices from solution
processed nanoparticle building blocks
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 46
year: '2017'
...
---
_id: '375'
abstract:
- lang: eng
text: "Branched nanocrystals (NCs) enable high atomic surface exposure within a
crystalline network that provides avenues for charge transport. This combination
of properties makes branched NCs particularly suitable for a range of applications
where both interaction with the media and charge transport are involved. Herein
we report on the colloidal synthesis of branched ceria NCs by means of a ligand-mediated
overgrowth mechanism. In particular, the differential coverage of oleic acid as
an X-type ligand at ceria facets with different atomic density, atomic coordination
deficiency, and oxygen vacancy density resulted in a preferential growth in the
[111] direction and thus in the formation of ceria octapods. Alcohols, through
an esterification alcoholysis reaction, promoted faster growth rates that translated
into nanostructures with higher geometrical complexity, increasing the branch
aspect ratio and triggering the formation of side branches. On the other hand,
the presence of water resulted in a significant reduction of the growth rate,
decreasing the reaction yield and eliminating side branching, which we associate
to a blocking of the surface reaction sites or a displacement of the alcoholysis
reaction. Overall, adjusting the amounts of each chemical, well-defined branched
ceria NCs with tuned number, thickness, and length of branches and with overall
size ranging from 5 to 45 nm could be produced. We further demonstrate that such
branched ceria NCs are able to provide higher surface areas and related oxygen
storage capacities (OSC) than quasi-spherical NCs.\r\n\r\n"
acknowledgement: This work was supported by the European Regional Development Funds
and the Spanish MINECO project BOOSTER. T.B. is grateful for the FI-AGAUR Research
Fellowship Program, Generalitat de Catalunya (2015 FI_B 00744). P.G. acknowledges
the People Programme (Marie Curie Actions) of the FP7/2007-2013 European Union Program
(TECNIOspring Grant Agreement No. 600388) and the Agency for Business Competitiveness
of the Government of Catalonia, ACCIÓ. M.I. thanks AGAUR for Beatriu de Pinós postdoctoral
grant (2013 BP-A00344). Z.L. thanks the China Scholarship Council for scholarship
support.
article_processing_charge: No
article_type: original
author:
- first_name: Taisiia
full_name: Berestok, Taisiia
last_name: Berestok
- first_name: Pablo
full_name: Guardia, Pablo
last_name: Guardia
- first_name: Javier
full_name: Blanco, Javier
last_name: Blanco
- first_name: Raquel
full_name: Nafria, Raquel
last_name: Nafria
- first_name: Pau
full_name: Torruella, Pau
last_name: Torruella
- first_name: Luis
full_name: López Conesa, Luis
last_name: López Conesa
- first_name: Sònia
full_name: Estradé, Sònia
last_name: Estradé
- first_name: Maria
full_name: Ibanez Sabate, Maria
id: 43C61214-F248-11E8-B48F-1D18A9856A87
last_name: Ibanez Sabate
orcid: 0000-0001-5013-2843
- first_name: Jonathan
full_name: De Roo, Jonathan
last_name: De Roo
- first_name: Zhishan
full_name: Luo, Zhishan
last_name: Luo
- first_name: Doris
full_name: Cadavid, Doris
last_name: Cadavid
- first_name: José
full_name: Martins, José
last_name: Martins
- first_name: Maksym
full_name: Kovalenko, Maksym
last_name: Kovalenko
- first_name: Francesca
full_name: Peiró, Francesca
last_name: Peiró
- first_name: Andreu
full_name: Cabot, Andreu
last_name: Cabot
citation:
ama: Berestok T, Guardia P, Blanco J, et al. Tuning branching in ceria nanocrystals.
Chemistry of Materials. 2017;29(10):4418-4424. doi:10.1021/acs.chemmater.7b00896
apa: Berestok, T., Guardia, P., Blanco, J., Nafria, R., Torruella, P., López Conesa,
L., … Cabot, A. (2017). Tuning branching in ceria nanocrystals. Chemistry of
Materials. American Chemical Society. https://doi.org/10.1021/acs.chemmater.7b00896
chicago: Berestok, Taisiia, Pablo Guardia, Javier Blanco, Raquel Nafria, Pau Torruella,
Luis López Conesa, Sònia Estradé, et al. “Tuning Branching in Ceria Nanocrystals.”
Chemistry of Materials. American Chemical Society, 2017. https://doi.org/10.1021/acs.chemmater.7b00896.
ieee: T. Berestok et al., “Tuning branching in ceria nanocrystals,” Chemistry
of Materials, vol. 29, no. 10. American Chemical Society, pp. 4418–4424, 2017.
ista: Berestok T, Guardia P, Blanco J, Nafria R, Torruella P, López Conesa L, Estradé
S, Ibáñez M, De Roo J, Luo Z, Cadavid D, Martins J, Kovalenko M, Peiró F, Cabot
A. 2017. Tuning branching in ceria nanocrystals. Chemistry of Materials. 29(10),
4418–4424.
mla: Berestok, Taisiia, et al. “Tuning Branching in Ceria Nanocrystals.” Chemistry
of Materials, vol. 29, no. 10, American Chemical Society, 2017, pp. 4418–24,
doi:10.1021/acs.chemmater.7b00896.
short: T. Berestok, P. Guardia, J. Blanco, R. Nafria, P. Torruella, L. López Conesa,
S. Estradé, M. Ibáñez, J. De Roo, Z. Luo, D. Cadavid, J. Martins, M. Kovalenko,
F. Peiró, A. Cabot, Chemistry of Materials 29 (2017) 4418–4424.
date_created: 2018-12-11T11:46:07Z
date_published: 2017-04-24T00:00:00Z
date_updated: 2024-03-05T12:19:17Z
day: '24'
doi: 10.1021/acs.chemmater.7b00896
extern: '1'
intvolume: ' 29'
issue: '10'
language:
- iso: eng
month: '04'
oa_version: None
page: 4418 - 4424
publication: Chemistry of Materials
publication_identifier:
eissn:
- 1520-5002
issn:
- 0897-4756
publication_status: published
publisher: American Chemical Society
publist_id: '7455'
quality_controlled: '1'
status: public
title: Tuning branching in ceria nanocrystals
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 29
year: '2017'
...
---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '391'
abstract:
- lang: eng
text: 'Three-dimensional topological insulators are bulk insulators with Z 2 topological
electronic order that gives rise to conducting light-like surface states. These
surface electrons are exceptionally resistant to localization by non-magnetic
disorder, and have been adopted as the basis for a wide range of proposals to
achieve new quasiparticle species and device functionality. Recent studies have
yielded a surprise by showing that in spite of resisting localization, topological
insulator surface electrons can be reshaped by defects into distinctive resonance
states. Here we use numerical simulations and scanning tunnelling microscopy data
to show that these resonance states have significance well beyond the localized
regime usually associated with impurity bands. At native densities in the model
Bi2X3 (X=Bi, Te) compounds, defect resonance states are predicted to generate
a new quantum basis for an emergent electron gas that supports diffusive electrical
transport. '
article_number: '14081'
article_processing_charge: No
author:
- first_name: Yishuai
full_name: Xu, Yishuai
last_name: Xu
- first_name: Janet
full_name: Chiu, Janet
last_name: Chiu
- first_name: Lin
full_name: Miao, Lin
last_name: Miao
- first_name: Haowei
full_name: He, Haowei
last_name: He
- first_name: Zhanybek
full_name: Alpichshev, Zhanybek
id: 45E67A2A-F248-11E8-B48F-1D18A9856A87
last_name: Alpichshev
orcid: 0000-0002-7183-5203
- first_name: Aharon
full_name: Kapitulnik, Aharon
last_name: Kapitulnik
- first_name: Rudro
full_name: Biswas, Rudro
last_name: Biswas
- first_name: Lewis
full_name: Wray, Lewis
last_name: Wray
citation:
ama: Xu Y, Chiu J, Miao L, et al. Disorder enabled band structure engineering of
a topological insulator surface. Nature Communications. 2017;8. doi:10.1038/ncomms14081
apa: Xu, Y., Chiu, J., Miao, L., He, H., Alpichshev, Z., Kapitulnik, A., … Wray,
L. (2017). Disorder enabled band structure engineering of a topological insulator
surface. Nature Communications. Springer Nature. https://doi.org/10.1038/ncomms14081
chicago: Xu, Yishuai, Janet Chiu, Lin Miao, Haowei He, Zhanybek Alpichshev, Aharon
Kapitulnik, Rudro Biswas, and Lewis Wray. “Disorder Enabled Band Structure Engineering
of a Topological Insulator Surface.” Nature Communications. Springer Nature,
2017. https://doi.org/10.1038/ncomms14081.
ieee: Y. Xu et al., “Disorder enabled band structure engineering of a topological
insulator surface,” Nature Communications, vol. 8. Springer Nature, 2017.
ista: Xu Y, Chiu J, Miao L, He H, Alpichshev Z, Kapitulnik A, Biswas R, Wray L.
2017. Disorder enabled band structure engineering of a topological insulator surface.
Nature Communications. 8, 14081.
mla: Xu, Yishuai, et al. “Disorder Enabled Band Structure Engineering of a Topological
Insulator Surface.” Nature Communications, vol. 8, 14081, Springer Nature,
2017, doi:10.1038/ncomms14081.
short: Y. Xu, J. Chiu, L. Miao, H. He, Z. Alpichshev, A. Kapitulnik, R. Biswas,
L. Wray, Nature Communications 8 (2017).
date_created: 2018-12-11T11:46:12Z
date_published: 2017-02-03T00:00:00Z
date_updated: 2025-07-08T15:09:23Z
day: '03'
doi: 10.1038/ncomms14081
extern: '1'
intvolume: ' 8'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1038/ncomms14081
month: '02'
oa: 1
oa_version: Published Version
publication: Nature Communications
publication_identifier:
eissn:
- 2041-1723
publication_status: published
publisher: Springer Nature
publist_id: '7438'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Disorder enabled band structure engineering of a topological insulator surface
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 8
year: '2017'
...
---
_id: '392'
abstract:
- lang: eng
text: We used femtosecond optical pump-probe spectroscopy to study the photoinduced
change in reflectivity of thin films of the electron-doped cuprate La2-xCexCuO4
(LCCO) with dopings of x=0.08 (underdoped) and x=0.11 (optimally doped). Above
Tc, we observe fluence-dependent relaxation rates that begin at a temperature
similar to the one where transport measurements first show signatures of antiferromagnetic
correlations. Upon suppressing superconductivity with a magnetic field, it is
found that the fluence and temperature dependence of relaxation rates are consistent
with bimolecular recombination of electrons and holes across a gap (2ΔAF) originating
from antiferromagnetic correlations which comprise the pseudogap in electron-doped
cuprates. This can be used to learn about coupling between electrons and high-energy
(ω>2ΔAF) excitations in these compounds and set limits on the time scales on
which antiferromagnetic correlations are static.
acknowledgement: Optical pump-probe work was supported by the Gordon and Betty Moore
Foundation's EPiQS initiative through Grant No. GBMF4540. Materials growth and characterization
was supported by AFOSR FA95501410332 and NSF DMR1410665.
author:
- first_name: Inna
full_name: Vishik, Inna
last_name: Vishik
- first_name: Fahad
full_name: Mahmood, Fahad
last_name: Mahmood
- first_name: Zhanybek
full_name: Alpichshev, Zhanybek
id: 45E67A2A-F248-11E8-B48F-1D18A9856A87
last_name: Alpichshev
orcid: 0000-0002-7183-5203
- first_name: Nuh
full_name: Gedik, Nuh
last_name: Gedik
- first_name: Joshu
full_name: Higgins, Joshu
last_name: Higgins
- first_name: Richard
full_name: Greene, Richard
last_name: Greene
citation:
ama: Vishik I, Mahmood F, Alpichshev Z, Gedik N, Higgins J, Greene R. Ultrafast
dynamics in the presence of antiferromagnetic correlations in electron doped cuprate
La2 xCexCuO4±δ. Physical Review B. 2017;95(11). doi:10.1103/PhysRevB.95.115125
apa: Vishik, I., Mahmood, F., Alpichshev, Z., Gedik, N., Higgins, J., & Greene,
R. (2017). Ultrafast dynamics in the presence of antiferromagnetic correlations
in electron doped cuprate La2 xCexCuO4±δ. Physical Review B. American Physical
Society. https://doi.org/10.1103/PhysRevB.95.115125
chicago: Vishik, Inna, Fahad Mahmood, Zhanybek Alpichshev, Nuh Gedik, Joshu Higgins,
and Richard Greene. “Ultrafast Dynamics in the Presence of Antiferromagnetic Correlations
in Electron Doped Cuprate La2 XCexCuO4±δ.” Physical Review B. American
Physical Society, 2017. https://doi.org/10.1103/PhysRevB.95.115125.
ieee: I. Vishik, F. Mahmood, Z. Alpichshev, N. Gedik, J. Higgins, and R. Greene,
“Ultrafast dynamics in the presence of antiferromagnetic correlations in electron
doped cuprate La2 xCexCuO4±δ,” Physical Review B, vol. 95, no. 11. American
Physical Society, 2017.
ista: Vishik I, Mahmood F, Alpichshev Z, Gedik N, Higgins J, Greene R. 2017. Ultrafast
dynamics in the presence of antiferromagnetic correlations in electron doped cuprate
La2 xCexCuO4±δ. Physical Review B. 95(11).
mla: Vishik, Inna, et al. “Ultrafast Dynamics in the Presence of Antiferromagnetic
Correlations in Electron Doped Cuprate La2 XCexCuO4±δ.” Physical Review B,
vol. 95, no. 11, American Physical Society, 2017, doi:10.1103/PhysRevB.95.115125.
short: I. Vishik, F. Mahmood, Z. Alpichshev, N. Gedik, J. Higgins, R. Greene, Physical
Review B 95 (2017).
date_created: 2018-12-11T11:46:13Z
date_published: 2017-03-13T00:00:00Z
date_updated: 2021-01-12T07:53:12Z
day: '13'
doi: 10.1103/PhysRevB.95.115125
extern: '1'
intvolume: ' 95'
issue: '11'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://dspace.mit.edu/handle/1721.1/109835
month: '03'
oa: 1
oa_version: None
publication: Physical Review B
publication_status: published
publisher: American Physical Society
publist_id: '7437'
status: public
title: Ultrafast dynamics in the presence of antiferromagnetic correlations in electron
doped cuprate La2 xCexCuO4±δ
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 95
year: '2017'
...
---
_id: '393'
abstract:
- lang: eng
text: 'We use a three-pulse ultrafast optical spectroscopy to study the relaxation
processes in a frustrated Mott insulator Na2IrO3. By being able to independently
produce the out-of-equilibrium bound states (excitons) of doublons and holons
with the first pulse and suppress the underlying antiferromagnetic order with
the second one, we were able to elucidate the relaxation mechanism of quasiparticles
in this system. By observing the difference in the exciton dynamics in the magnetically
ordered and disordered phases we found that the mass of this quasiparticle is
mostly determined by its interaction with the surrounding spins. '
acknowledgement: "Z.A. gratefully acknowledges discussions with P. A. Lee and A. Kemper.
A conversation with J. Zaanen was instrumental in clarifying the physical picture
described in this paper. We would also like to thank A. Kogar for thoroughly reading
the manuscript and making valuable comments. This work was supported by Army Research
Office Grant No. W911NF-15-1-0128 and Gordon and Betty Moore Foundation EPiQS Initiative
through Grant No. GBMF4540 (time resolved optical spectroscopy), Skoltech, as part
of the Skoltech NGP program (theory) and National Science Foundation Grant No. DMR-1265162
(material growth).\r\n\r\n"
author:
- first_name: Zhanybek
full_name: Alpichshev, Zhanybek
id: 45E67A2A-F248-11E8-B48F-1D18A9856A87
last_name: Alpichshev
orcid: 0000-0002-7183-5203
- first_name: Edbert
full_name: Sie, Edbert
last_name: Sie
- first_name: Fahad
full_name: Mahmood, Fahad
last_name: Mahmood
- first_name: Gang
full_name: Cao, Gang
last_name: Cao
- first_name: Nuh
full_name: Gedik, Nuh
last_name: Gedik
citation:
ama: Alpichshev Z, Sie E, Mahmood F, Cao G, Gedik N. Origin of the exciton mass
in the frustrated Mott insulator Na2IrO3. Physical Review B. 2017;96(23).
doi:10.1103/PhysRevB.96.235141
apa: Alpichshev, Z., Sie, E., Mahmood, F., Cao, G., & Gedik, N. (2017). Origin
of the exciton mass in the frustrated Mott insulator Na2IrO3. Physical Review
B. American Physical Society. https://doi.org/10.1103/PhysRevB.96.235141
chicago: Alpichshev, Zhanybek, Edbert Sie, Fahad Mahmood, Gang Cao, and Nuh Gedik.
“Origin of the Exciton Mass in the Frustrated Mott Insulator Na2IrO3.” Physical
Review B. American Physical Society, 2017. https://doi.org/10.1103/PhysRevB.96.235141.
ieee: Z. Alpichshev, E. Sie, F. Mahmood, G. Cao, and N. Gedik, “Origin of the exciton
mass in the frustrated Mott insulator Na2IrO3,” Physical Review B, vol.
96, no. 23. American Physical Society, 2017.
ista: Alpichshev Z, Sie E, Mahmood F, Cao G, Gedik N. 2017. Origin of the exciton
mass in the frustrated Mott insulator Na2IrO3. Physical Review B. 96(23).
mla: Alpichshev, Zhanybek, et al. “Origin of the Exciton Mass in the Frustrated
Mott Insulator Na2IrO3.” Physical Review B, vol. 96, no. 23, American Physical
Society, 2017, doi:10.1103/PhysRevB.96.235141.
short: Z. Alpichshev, E. Sie, F. Mahmood, G. Cao, N. Gedik, Physical Review B 96
(2017).
date_created: 2018-12-11T11:46:13Z
date_published: 2017-12-26T00:00:00Z
date_updated: 2021-01-12T07:53:16Z
day: '26'
doi: 10.1103/PhysRevB.96.235141
extern: '1'
intvolume: ' 96'
issue: '23'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://dspace.mit.edu/handle/1721.1/114259
month: '12'
oa: 1
oa_version: None
publication: Physical Review B
publication_status: published
publisher: American Physical Society
publist_id: '7436'
status: public
title: Origin of the exciton mass in the frustrated Mott insulator Na2IrO3
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 96
year: '2017'
...
---
_id: '424'
abstract:
- lang: eng
text: 'We show that very weak topological assumptions are enough to ensure the existence
of a Helly-type theorem. More precisely, we show that for any non-negative integers
b and d there exists an integer h(b, d) such that the following holds. If F is
a finite family of subsets of Rd such that βi(∩G)≤b for any G⊊F and every 0 ≤
i ≤ [d/2]-1 then F has Helly number at most h(b, d). Here βi denotes the reduced
Z2-Betti numbers (with singular homology). These topological conditions are sharp:
not controlling any of these [d/2] first Betti numbers allow for families with
unbounded Helly number. Our proofs combine homological non-embeddability results
with a Ramsey-based approach to build, given an arbitrary simplicial complex K,
some well-behaved chain map C*(K)→C*(Rd).'
article_processing_charge: No
arxiv: 1
author:
- first_name: Xavier
full_name: Goaoc, Xavier
last_name: Goaoc
- first_name: Pavel
full_name: Paták, Pavel
last_name: Paták
- first_name: Zuzana
full_name: Patakova, Zuzana
last_name: Patakova
orcid: 0000-0002-3975-1683
- first_name: Martin
full_name: Tancer, Martin
last_name: Tancer
orcid: 0000-0002-1191-6714
- first_name: Uli
full_name: Wagner, Uli
id: 36690CA2-F248-11E8-B48F-1D18A9856A87
last_name: Wagner
orcid: 0000-0002-1494-0568
citation:
ama: 'Goaoc X, Paták P, Patakova Z, Tancer M, Wagner U. Bounding helly numbers via
betti numbers. In: Loebl M, Nešetřil J, Thomas R, eds. A Journey through Discrete
Mathematics: A Tribute to Jiri Matousek. A Journey Through Discrete Mathematics.
Springer; 2017:407-447. doi:10.1007/978-3-319-44479-6_17'
apa: 'Goaoc, X., Paták, P., Patakova, Z., Tancer, M., & Wagner, U. (2017). Bounding
helly numbers via betti numbers. In M. Loebl, J. Nešetřil, & R. Thomas (Eds.),
A Journey through Discrete Mathematics: A Tribute to Jiri Matousek (pp.
407–447). Springer. https://doi.org/10.1007/978-3-319-44479-6_17'
chicago: 'Goaoc, Xavier, Pavel Paták, Zuzana Patakova, Martin Tancer, and Uli Wagner.
“Bounding Helly Numbers via Betti Numbers.” In A Journey through Discrete Mathematics:
A Tribute to Jiri Matousek, edited by Martin Loebl, Jaroslav Nešetřil, and
Robin Thomas, 407–47. A Journey Through Discrete Mathematics. Springer, 2017.
https://doi.org/10.1007/978-3-319-44479-6_17.'
ieee: 'X. Goaoc, P. Paták, Z. Patakova, M. Tancer, and U. Wagner, “Bounding helly
numbers via betti numbers,” in A Journey through Discrete Mathematics: A Tribute
to Jiri Matousek, M. Loebl, J. Nešetřil, and R. Thomas, Eds. Springer, 2017,
pp. 407–447.'
ista: 'Goaoc X, Paták P, Patakova Z, Tancer M, Wagner U. 2017.Bounding helly numbers
via betti numbers. In: A Journey through Discrete Mathematics: A Tribute to Jiri
Matousek. , 407–447.'
mla: 'Goaoc, Xavier, et al. “Bounding Helly Numbers via Betti Numbers.” A Journey
through Discrete Mathematics: A Tribute to Jiri Matousek, edited by Martin
Loebl et al., Springer, 2017, pp. 407–47, doi:10.1007/978-3-319-44479-6_17.'
short: 'X. Goaoc, P. Paták, Z. Patakova, M. Tancer, U. Wagner, in:, M. Loebl, J.
Nešetřil, R. Thomas (Eds.), A Journey through Discrete Mathematics: A Tribute
to Jiri Matousek, Springer, 2017, pp. 407–447.'
date_created: 2018-12-11T11:46:24Z
date_published: 2017-10-06T00:00:00Z
date_updated: 2025-06-04T08:47:28Z
day: '06'
department:
- _id: UlWa
doi: 10.1007/978-3-319-44479-6_17
editor:
- first_name: Martin
full_name: Loebl, Martin
last_name: Loebl
- first_name: Jaroslav
full_name: Nešetřil, Jaroslav
last_name: Nešetřil
- first_name: Robin
full_name: Thomas, Robin
last_name: Thomas
external_id:
arxiv:
- '1310.4613'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1310.4613
month: '10'
oa: 1
oa_version: Published Version
page: 407 - 447
publication: 'A Journey through Discrete Mathematics: A Tribute to Jiri Matousek'
publication_identifier:
isbn:
- 978-331944479-6
publication_status: published
publisher: Springer
publist_id: '7399'
quality_controlled: '1'
related_material:
record:
- id: '1512'
relation: earlier_version
status: public
scopus_import: '1'
series_title: A Journey Through Discrete Mathematics
status: public
title: Bounding helly numbers via betti numbers
type: book_chapter
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2017'
...
---
_id: '431'
abstract:
- lang: eng
text: 'Parallel implementations of stochastic gradient descent (SGD) have received
significant research attention, thanks to its excellent scalability properties.
A fundamental barrier when parallelizing SGD is the high bandwidth cost of communicating
gradient updates between nodes; consequently, several lossy compresion heuristics
have been proposed, by which nodes only communicate quantized gradients. Although
effective in practice, these heuristics do not always converge. In this paper,
we propose Quantized SGD (QSGD), a family of compression schemes with convergence
guarantees and good practical performance. QSGD allows the user to smoothly trade
off communication bandwidth and convergence time: nodes can adjust the number
of bits sent per iteration, at the cost of possibly higher variance. We show that
this trade-off is inherent, in the sense that improving it past some threshold
would violate information-theoretic lower bounds. QSGD guarantees convergence
for convex and non-convex objectives, under asynchrony, and can be extended to
stochastic variance-reduced techniques. When applied to training deep neural networks
for image classification and automated speech recognition, QSGD leads to significant
reductions in end-to-end training time. For instance, on 16GPUs, we can train
the ResNet-152 network to full accuracy on ImageNet 1.8 × faster than the full-precision
variant. '
alternative_title:
- Advances in Neural Information Processing Systems
article_processing_charge: No
arxiv: 1
author:
- 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: Demjan
full_name: Grubic, Demjan
last_name: Grubic
- first_name: Jerry
full_name: Li, Jerry
last_name: Li
- first_name: Ryota
full_name: Tomioka, Ryota
last_name: Tomioka
- first_name: Milan
full_name: Vojnović, Milan
last_name: Vojnović
citation:
ama: 'Alistarh D-A, Grubic D, Li J, Tomioka R, Vojnović M. QSGD: Communication-efficient
SGD via gradient quantization and encoding. In: Vol 2017. Neural Information Processing
Systems Foundation; 2017:1710-1721.'
apa: 'Alistarh, D.-A., Grubic, D., Li, J., Tomioka, R., & Vojnović, M. (2017).
QSGD: Communication-efficient SGD via gradient quantization and encoding (Vol.
2017, pp. 1710–1721). Presented at the NIPS: Neural Information Processing System,
Long Beach, CA, United States: Neural Information Processing Systems Foundation.'
chicago: 'Alistarh, Dan-Adrian, Demjan Grubic, Jerry Li, Ryota Tomioka, and Milan
Vojnović. “QSGD: Communication-Efficient SGD via Gradient Quantization and Encoding,”
2017:1710–21. Neural Information Processing Systems Foundation, 2017.'
ieee: 'D.-A. Alistarh, D. Grubic, J. Li, R. Tomioka, and M. Vojnović, “QSGD: Communication-efficient
SGD via gradient quantization and encoding,” presented at the NIPS: Neural Information
Processing System, Long Beach, CA, United States, 2017, vol. 2017, pp. 1710–1721.'
ista: 'Alistarh D-A, Grubic D, Li J, Tomioka R, Vojnović M. 2017. QSGD: Communication-efficient
SGD via gradient quantization and encoding. NIPS: Neural Information Processing
System, Advances in Neural Information Processing Systems, vol. 2017, 1710–1721.'
mla: 'Alistarh, Dan-Adrian, et al. QSGD: Communication-Efficient SGD via Gradient
Quantization and Encoding. Vol. 2017, Neural Information Processing Systems
Foundation, 2017, pp. 1710–21.'
short: D.-A. Alistarh, D. Grubic, J. Li, R. Tomioka, M. Vojnović, in:, Neural Information
Processing Systems Foundation, 2017, pp. 1710–1721.
conference:
end_date: 2017-12-09
location: Long Beach, CA, United States
name: 'NIPS: Neural Information Processing System'
start_date: 2017-12-04
corr_author: '1'
date_created: 2018-12-11T11:46:26Z
date_published: 2017-01-01T00:00:00Z
date_updated: 2025-09-18T10:07:20Z
day: '01'
department:
- _id: DaAl
external_id:
arxiv:
- '1610.02132'
isi:
- '000452649401072'
intvolume: ' 2017'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1610.02132
month: '01'
oa: 1
oa_version: Submitted Version
page: 1710-1721
publication_identifier:
issn:
- 1049-5258
publication_status: published
publisher: Neural Information Processing Systems Foundation
publist_id: '7392'
quality_controlled: '1'
status: public
title: 'QSGD: Communication-efficient SGD via gradient quantization and encoding'
type: conference
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 2017
year: '2017'
...
---
_id: '432'
abstract:
- lang: eng
text: 'Recently there has been significant interest in training machine-learning
models at low precision: by reducing precision, one can reduce computation and
communication by one order of magnitude. We examine training at reduced precision,
both from a theoretical and practical perspective, and ask: is it possible to
train models at end-to-end low precision with provable guarantees? Can this lead
to consistent order-of-magnitude speedups? We mainly focus on linear models, and
the answer is yes for linear models. We develop a simple framework called ZipML
based on one simple but novel strategy called double sampling. Our ZipML framework
is able to execute training at low precision with no bias, guaranteeing convergence,
whereas naive quanti- zation would introduce significant bias. We val- idate our
framework across a range of applica- tions, and show that it enables an FPGA proto-
type that is up to 6.5 × faster than an implemen- tation using full 32-bit precision.
We further de- velop a variance-optimal stochastic quantization strategy and show
that it can make a significant difference in a variety of settings. When applied
to linear models together with double sampling, we save up to another 1.7 × in
data movement compared with uniform quantization. When training deep networks
with quantized models, we achieve higher accuracy than the state-of-the- art XNOR-Net. '
alternative_title:
- PMLR Press
article_processing_charge: No
author:
- first_name: Hantian
full_name: Zhang, Hantian
last_name: Zhang
- first_name: Jerry
full_name: Li, Jerry
last_name: Li
- first_name: Kaan
full_name: Kara, Kaan
last_name: Kara
- 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: Ji
full_name: Liu, Ji
last_name: Liu
- first_name: Ce
full_name: Zhang, Ce
last_name: Zhang
citation:
ama: 'Zhang H, Li J, Kara K, Alistarh D-A, Liu J, Zhang C. ZipML: Training linear
models with end-to-end low precision, and a little bit of deep learning. In: Proceedings
of Machine Learning Research. Vol 70. ML Research Press; 2017:4035-4043.'
apa: 'Zhang, H., Li, J., Kara, K., Alistarh, D.-A., Liu, J., & Zhang, C. (2017).
ZipML: Training linear models with end-to-end low precision, and a little bit
of deep learning. In Proceedings of Machine Learning Research (Vol. 70,
pp. 4035–4043). Sydney, Australia: ML Research Press.'
chicago: 'Zhang, Hantian, Jerry Li, Kaan Kara, Dan-Adrian Alistarh, Ji Liu, and
Ce Zhang. “ZipML: Training Linear Models with End-to-End Low Precision, and a
Little Bit of Deep Learning.” In Proceedings of Machine Learning Research,
70:4035–43. ML Research Press, 2017.'
ieee: 'H. Zhang, J. Li, K. Kara, D.-A. Alistarh, J. Liu, and C. Zhang, “ZipML: Training
linear models with end-to-end low precision, and a little bit of deep learning,”
in Proceedings of Machine Learning Research, Sydney, Australia, 2017, vol.
70, pp. 4035–4043.'
ista: 'Zhang H, Li J, Kara K, Alistarh D-A, Liu J, Zhang C. 2017. ZipML: Training
linear models with end-to-end low precision, and a little bit of deep learning.
Proceedings of Machine Learning Research. ICML: International Conference on Machine
Learning, PMLR Press, vol. 70, 4035–4043.'
mla: 'Zhang, Hantian, et al. “ZipML: Training Linear Models with End-to-End Low
Precision, and a Little Bit of Deep Learning.” Proceedings of Machine Learning
Research, vol. 70, ML Research Press, 2017, pp. 4035–43.'
short: H. Zhang, J. Li, K. Kara, D.-A. Alistarh, J. Liu, C. Zhang, in:, Proceedings
of Machine Learning Research, ML Research Press, 2017, pp. 4035–4043.
conference:
end_date: 2017-08-11
location: Sydney, Australia
name: 'ICML: International Conference on Machine Learning'
start_date: 2017-08-06
corr_author: '1'
date_created: 2018-12-11T11:46:26Z
date_published: 2017-01-01T00:00:00Z
date_updated: 2025-09-18T10:06:02Z
day: '01'
ddc:
- '000'
department:
- _id: DaAl
external_id:
isi:
- '000683309504015'
file:
- access_level: open_access
checksum: 86156ba7f4318e47cef3eb9092593c10
content_type: application/pdf
creator: dernst
date_created: 2019-01-22T08:23:58Z
date_updated: 2020-07-14T12:46:26Z
file_id: '5869'
file_name: 2017_ICML_Zhang.pdf
file_size: 849345
relation: main_file
file_date_updated: 2020-07-14T12:46:26Z
has_accepted_license: '1'
isi: 1
language:
- iso: eng
month: '01'
oa: 1
oa_version: Submitted Version
page: 4035 - 4043
publication: Proceedings of Machine Learning Research
publication_identifier:
isbn:
- 978-151085514-4
publication_status: published
publisher: ML Research Press
publist_id: '7391'
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'ZipML: Training linear models with end-to-end low precision, and a little
bit of deep learning'
type: conference
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: ' 70'
year: '2017'
...
---
_id: '443'
abstract:
- lang: eng
text: Pancreatic cancer has a five-year survival rate of ~8%, with characteristic
molecular heterogeneity and restricted treatment options. Targeting metabolism
has emerged as a potentially effective therapeutic strategy for cancers such as
pancreatic cancer, which are driven by genetic alterations that are not tractable
drug targets. Although somatic mitochondrial genome (mtDNA) mutations have been
observed in various tumors types, understanding of metabolic genotype-phenotype
relationships is limited.
article_processing_charge: No
author:
- first_name: Rae
full_name: Hardie, Rae
last_name: Hardie
- first_name: Ellen
full_name: Van Dam, Ellen
last_name: Van Dam
- first_name: Mark
full_name: Cowley, Mark
last_name: Cowley
- first_name: Ting
full_name: Han, Ting
last_name: Han
- first_name: Seher
full_name: Balaban, Seher
last_name: Balaban
- first_name: Marina
full_name: Pajic, Marina
last_name: Pajic
- first_name: Mark
full_name: Pinese, Mark
last_name: Pinese
- first_name: Mary
full_name: Iconomou, Mary
last_name: Iconomou
- first_name: Robert
full_name: Shearer, Robert
last_name: Shearer
- first_name: Jessie
full_name: Mckenna, Jessie
last_name: Mckenna
- first_name: David
full_name: Miller, David
last_name: Miller
- first_name: Nicola
full_name: Waddell, Nicola
last_name: Waddell
- first_name: John
full_name: Pearson, John
last_name: Pearson
- first_name: Sean
full_name: Grimmond, Sean
last_name: Grimmond
- first_name: Leonid A
full_name: Sazanov, Leonid A
id: 338D39FE-F248-11E8-B48F-1D18A9856A87
last_name: Sazanov
orcid: 0000-0002-0977-7989
- first_name: Andrew
full_name: Biankin, Andrew
last_name: Biankin
- first_name: Silas
full_name: Villas Boas, Silas
last_name: Villas Boas
- first_name: Andrew
full_name: Hoy, Andrew
last_name: Hoy
- first_name: Nigel
full_name: Turner, Nigel
last_name: Turner
- first_name: Darren
full_name: Saunders, Darren
last_name: Saunders
citation:
ama: Hardie R, Van Dam E, Cowley M, et al. Mitochondrial mutations and metabolic
adaptation in pancreatic cancer. Cancer & Metabolism. 2017;5(2). doi:10.1186/s40170-017-0164-1
apa: Hardie, R., Van Dam, E., Cowley, M., Han, T., Balaban, S., Pajic, M., … Saunders,
D. (2017). Mitochondrial mutations and metabolic adaptation in pancreatic cancer.
Cancer & Metabolism. BioMed Central. https://doi.org/10.1186/s40170-017-0164-1
chicago: Hardie, Rae, Ellen Van Dam, Mark Cowley, Ting Han, Seher Balaban, Marina
Pajic, Mark Pinese, et al. “Mitochondrial Mutations and Metabolic Adaptation in
Pancreatic Cancer.” Cancer & Metabolism. BioMed Central, 2017. https://doi.org/10.1186/s40170-017-0164-1.
ieee: R. Hardie et al., “Mitochondrial mutations and metabolic adaptation
in pancreatic cancer,” Cancer & Metabolism, vol. 5, no. 2. BioMed Central,
2017.
ista: Hardie R, Van Dam E, Cowley M, Han T, Balaban S, Pajic M, Pinese M, Iconomou
M, Shearer R, Mckenna J, Miller D, Waddell N, Pearson J, Grimmond S, Sazanov LA,
Biankin A, Villas Boas S, Hoy A, Turner N, Saunders D. 2017. Mitochondrial mutations
and metabolic adaptation in pancreatic cancer. Cancer & Metabolism. 5(2).
mla: Hardie, Rae, et al. “Mitochondrial Mutations and Metabolic Adaptation in Pancreatic
Cancer.” Cancer & Metabolism, vol. 5, no. 2, BioMed Central, 2017,
doi:10.1186/s40170-017-0164-1.
short: R. Hardie, E. Van Dam, M. Cowley, T. Han, S. Balaban, M. Pajic, M. Pinese,
M. Iconomou, R. Shearer, J. Mckenna, D. Miller, N. Waddell, J. Pearson, S. Grimmond,
L.A. Sazanov, A. Biankin, S. Villas Boas, A. Hoy, N. Turner, D. Saunders, Cancer
& Metabolism 5 (2017).
date_created: 2018-12-11T11:46:30Z
date_published: 2017-01-30T00:00:00Z
date_updated: 2025-09-18T10:03:47Z
day: '30'
ddc:
- '570'
doi: 10.1186/s40170-017-0164-1
extern: '1'
external_id:
isi:
- '000396463900001'
file:
- access_level: open_access
checksum: 337a65786875f64a1fe9fc0ac24767dc
content_type: application/pdf
creator: dernst
date_created: 2019-01-22T08:17:56Z
date_updated: 2020-07-14T12:46:29Z
file_id: '5868'
file_name: 2017_Cancer_Hardie.pdf
file_size: 1609174
relation: main_file
file_date_updated: 2020-07-14T12:46:29Z
has_accepted_license: '1'
intvolume: ' 5'
isi: 1
issue: '2'
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
month: '01'
oa: 1
oa_version: Published Version
publication: Cancer & Metabolism
publication_status: published
publisher: BioMed Central
publist_id: '7380'
quality_controlled: '1'
status: public
title: Mitochondrial mutations and metabolic adaptation in pancreatic cancer
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: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 5
year: '2017'
...
---
_id: '444'
abstract:
- lang: eng
text: Complex I (NADH:ubiquinone oxidoreductase) plays a central role in cellular
energy generation, contributing to the proton motive force used to produce ATP.
It couples the transfer of two electrons between NADH and quinone to translocation
of four protons across the membrane. It is the largest protein assembly of bacterial
and mitochondrial respiratory chains, composed, in mammals, of up to 45 subunits
with a total molecular weight of ∼1 MDa. Bacterial enzyme is about half the size,
providing the important “minimal” model of complex I. The l-shaped complex consists
of a hydrophilic arm, where electron transfer occurs, and a membrane arm, where
proton translocation takes place. Previously, we have solved the crystal structures
of the hydrophilic domain of complex I from Thermus thermophilus and of the membrane
domain from Escherichia coli, followed by the atomic structure of intact, entire
complex I from T. thermophilus. Recently, we have solved by cryo-EM a first complete
atomic structure of mammalian (ovine) mitochondrial complex I. Core subunits are
well conserved from the bacterial version, whilst supernumerary subunits form
an interlinked, stabilizing shell around the core. Subunits containing additional
cofactors, including Zn ion, NADPH and phosphopantetheine, probably have regulatory
roles. Dysfunction of mitochondrial complex I is implicated in many human neurodegenerative
diseases. The structure of mammalian enzyme provides many insights into complex
I mechanism, assembly, maturation and dysfunction, allowing detailed molecular
analysis of disease-causing mutations.
author:
- first_name: Leonid A
full_name: Sazanov, Leonid A
id: 338D39FE-F248-11E8-B48F-1D18A9856A87
last_name: Sazanov
orcid: 0000-0002-0977-7989
citation:
ama: 'Sazanov LA. Structure of respiratory complex I: “Minimal” bacterial and “de
luxe” mammalian versions. In: Wikström M, ed. Mechanisms of Primary Energy
Transduction in Biology . Mechanisms of Primary Energy Transduction in Biology
. Royal Society of Chemistry; 2017:25-59. doi:10.1039/9781788010405-00025'
apa: 'Sazanov, L. A. (2017). Structure of respiratory complex I: “Minimal” bacterial
and “de luxe” mammalian versions. In M. Wikström (Ed.), Mechanisms of primary
energy transduction in biology (pp. 25–59). Royal Society of Chemistry. https://doi.org/10.1039/9781788010405-00025'
chicago: 'Sazanov, Leonid A. “Structure of Respiratory Complex I: ‘Minimal’ Bacterial
and ‘de Luxe’ Mammalian Versions.” In Mechanisms of Primary Energy Transduction
in Biology , edited by Mårten Wikström, 25–59. Mechanisms of Primary Energy
Transduction in Biology . Royal Society of Chemistry, 2017. https://doi.org/10.1039/9781788010405-00025.'
ieee: 'L. A. Sazanov, “Structure of respiratory complex I: ‘Minimal’ bacterial and
‘de luxe’ mammalian versions,” in Mechanisms of primary energy transduction
in biology , M. Wikström, Ed. Royal Society of Chemistry, 2017, pp. 25–59.'
ista: 'Sazanov LA. 2017.Structure of respiratory complex I: “Minimal” bacterial
and “de luxe” mammalian versions. In: Mechanisms of primary energy transduction
in biology . , 25–59.'
mla: 'Sazanov, Leonid A. “Structure of Respiratory Complex I: ‘Minimal’ Bacterial
and ‘de Luxe’ Mammalian Versions.” Mechanisms of Primary Energy Transduction
in Biology , edited by Mårten Wikström, Royal Society of Chemistry, 2017,
pp. 25–59, doi:10.1039/9781788010405-00025.'
short: L.A. Sazanov, in:, M. Wikström (Ed.), Mechanisms of Primary Energy Transduction
in Biology , Royal Society of Chemistry, 2017, pp. 25–59.
corr_author: '1'
date_created: 2018-12-11T11:46:30Z
date_published: 2017-11-29T00:00:00Z
date_updated: 2024-10-09T20:58:14Z
day: '29'
department:
- _id: LeSa
doi: 10.1039/9781788010405-00025
editor:
- first_name: Mårten
full_name: Wikström, Mårten
last_name: Wikström
language:
- iso: eng
month: '11'
oa_version: None
page: 25 - 59
publication: 'Mechanisms of primary energy transduction in biology '
publication_identifier:
isbn:
- 978-1-78262-865-1
publication_status: published
publisher: Royal Society of Chemistry
publist_id: '7379'
quality_controlled: '1'
series_title: 'Mechanisms of Primary Energy Transduction in Biology '
status: public
title: 'Structure of respiratory complex I: “Minimal” bacterial and “de luxe” mammalian
versions'
type: book_chapter
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2017'
...
---
_id: '445'
abstract:
- lang: eng
text: The Loschmidt echo, defined as the overlap between quantum wave function evolved
with different Hamiltonians, quantifies the sensitivity of quantum dynamics to
perturbations and is often used as a probe of quantum chaos. In this work we consider
the behavior of the Loschmidt echo in the many-body localized phase, which is
characterized by emergent local integrals of motion and provides a generic example
of nonergodic dynamics. We demonstrate that the fluctuations of the Loschmidt
echo decay as a power law in time in the many-body localized phase, in contrast
to the exponential decay in few-body ergodic systems. We consider the spin-echo
generalization of the Loschmidt echo and argue that the corresponding correlation
function saturates to a finite value in localized systems. Slow, power-law decay
of fluctuations of such spin-echo-type overlap is related to the operator spreading
and is present only in the many-body localized phase, but not in a noninteracting
Anderson insulator. While most of the previously considered probes of dephasing
dynamics could be understood by approximating physical spin operators with local
integrals of motion, the Loschmidt echo and its generalizations crucially depend
on the full expansion of the physical operators via local integrals of motion
operators, as well as operators which flip local integrals of motion. Hence these
probes allow one to get insights into the relation between physical operators
and local integrals of motion and access the operator spreading in the many-body
localized phase.
acknowledgement: "This research was supported in part by the National\r\nScience Foundation
under Grant No. NSF PHY11-25915.\r\nM.S. was supported by Gordon and Betty Moore
Foundation’s\r\nEPiQS Initiative through Grant No. GBMF4307. D.A. also\r\nacknowledges
support by Swiss National Science Foundation."
article_processing_charge: No
arxiv: 1
author:
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Dimitry
full_name: Abanin, Dimitry
last_name: Abanin
citation:
ama: Serbyn M, Abanin D. Loschmidt echo in many body localized phases. Physical
Review B - Condensed Matter and Materials Physics. 2017;96(1). doi:10.1103/PhysRevB.96.014202
apa: Serbyn, M., & Abanin, D. (2017). Loschmidt echo in many body localized
phases. Physical Review B - Condensed Matter and Materials Physics. American
Physical Society. https://doi.org/10.1103/PhysRevB.96.014202
chicago: Serbyn, Maksym, and Dimitry Abanin. “Loschmidt Echo in Many Body Localized
Phases.” Physical Review B - Condensed Matter and Materials Physics. American
Physical Society, 2017. https://doi.org/10.1103/PhysRevB.96.014202.
ieee: M. Serbyn and D. Abanin, “Loschmidt echo in many body localized phases,” Physical
Review B - Condensed Matter and Materials Physics, vol. 96, no. 1. American
Physical Society, 2017.
ista: Serbyn M, Abanin D. 2017. Loschmidt echo in many body localized phases. Physical
Review B - Condensed Matter and Materials Physics. 96(1).
mla: Serbyn, Maksym, and Dimitry Abanin. “Loschmidt Echo in Many Body Localized
Phases.” Physical Review B - Condensed Matter and Materials Physics, vol.
96, no. 1, American Physical Society, 2017, doi:10.1103/PhysRevB.96.014202.
short: M. Serbyn, D. Abanin, Physical Review B - Condensed Matter and Materials
Physics 96 (2017).
date_created: 2018-12-11T11:46:31Z
date_published: 2017-07-12T00:00:00Z
date_updated: 2025-09-04T06:59:31Z
day: '12'
doi: 10.1103/PhysRevB.96.014202
extern: '1'
external_id:
arxiv:
- '1701.07772'
intvolume: ' 96'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1701.07772
month: '07'
oa: 1
oa_version: Preprint
publication: Physical Review B - Condensed Matter and Materials Physics
publication_status: published
publisher: American Physical Society
publist_id: '7378'
status: public
title: Loschmidt echo in many body localized phases
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 96
year: '2017'
...
---
_id: '447'
abstract:
- lang: eng
text: We consider last passage percolation (LPP) models with exponentially distributed
random variables, which are linked to the totally asymmetric simple exclusion
process (TASEP). The competition interface for LPP was introduced and studied
in Ferrari and Pimentel (2005a) for cases where the corresponding exclusion process
had a rarefaction fan. Here we consider situations with a shock and determine
the law of the fluctuations of the competition interface around its deter- ministic
law of large number position. We also study the multipoint distribution of the
LPP around the shock, extending our one-point result of Ferrari and Nejjar (2015).
article_processing_charge: No
article_type: original
author:
- first_name: Patrik
full_name: Ferrari, Patrik
last_name: Ferrari
- first_name: Peter
full_name: Nejjar, Peter
id: 4BF426E2-F248-11E8-B48F-1D18A9856A87
last_name: Nejjar
citation:
ama: Ferrari P, Nejjar P. Fluctuations of the competition interface in presence
of shocks. Revista Latino-Americana de Probabilidade e Estatística. 2017;9:299-325.
doi:10.30757/ALEA.v14-17
apa: Ferrari, P., & Nejjar, P. (2017). Fluctuations of the competition interface
in presence of shocks. Revista Latino-Americana de Probabilidade e Estatística.
Instituto Nacional de Matematica Pura e Aplicada. https://doi.org/10.30757/ALEA.v14-17
chicago: Ferrari, Patrik, and Peter Nejjar. “Fluctuations of the Competition Interface
in Presence of Shocks.” Revista Latino-Americana de Probabilidade e Estatística.
Instituto Nacional de Matematica Pura e Aplicada, 2017. https://doi.org/10.30757/ALEA.v14-17.
ieee: P. Ferrari and P. Nejjar, “Fluctuations of the competition interface in presence
of shocks,” Revista Latino-Americana de Probabilidade e Estatística, vol.
9. Instituto Nacional de Matematica Pura e Aplicada, pp. 299–325, 2017.
ista: Ferrari P, Nejjar P. 2017. Fluctuations of the competition interface in presence
of shocks. Revista Latino-Americana de Probabilidade e Estatística. 9, 299–325.
mla: Ferrari, Patrik, and Peter Nejjar. “Fluctuations of the Competition Interface
in Presence of Shocks.” Revista Latino-Americana de Probabilidade e Estatística,
vol. 9, Instituto Nacional de Matematica Pura e Aplicada, 2017, pp. 299–325, doi:10.30757/ALEA.v14-17.
short: P. Ferrari, P. Nejjar, Revista Latino-Americana de Probabilidade e Estatística
9 (2017) 299–325.
corr_author: '1'
date_created: 2018-12-11T11:46:31Z
date_published: 2017-03-23T00:00:00Z
date_updated: 2025-09-18T10:02:36Z
day: '23'
department:
- _id: LaEr
- _id: JaMa
doi: 10.30757/ALEA.v14-17
ec_funded: 1
external_id:
isi:
- '000404011700017'
intvolume: ' 9'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://alea.impa.br/articles/v14/14-17.pdf
month: '03'
oa: 1
oa_version: Submitted Version
page: 299 - 325
project:
- _id: 258DCDE6-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '338804'
name: Random matrices, universality and disordered quantum systems
publication: Revista Latino-Americana de Probabilidade e Estatística
publication_status: published
publisher: Instituto Nacional de Matematica Pura e Aplicada
publist_id: '7376'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Fluctuations of the competition interface in presence of shocks
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 9
year: '2017'
...
---
_id: '452'
abstract:
- lang: eng
text: 'Spinning tops and yo-yos have long fascinated cultures around the world with
their unexpected, graceful motions that seemingly elude gravity. Yet, due to the
exceeding difficulty of creating stably spinning objects of asymmetric shape in
a manual trial-and-error process, there has been little departure from rotationally
symmetric designs. With modern 3D printing technologies, however, we can manufacture
shapes of almost unbounded complexity at the press of a button, shifting this
design complexity toward computation. In this article, we describe an algorithm
to generate designs for spinning objects by optimizing their mass distribution:
as input, the user provides a solid 3D model and a desired axis of rotation. Our
approach then modifies the interior mass distribution such that the principal
directions of the moment of inertia align with the target rotation frame. To create
voids inside the model, we represent its volume with an adaptive multiresolution
voxelization and optimize the discrete voxel fill values using a continuous, nonlinear
formulation. We further optimize for rotational stability by maximizing the dominant
principal moment. Our method is well-suited for a variety of 3D printed models,
ranging from characters to abstract shapes. We demonstrate tops and yo-yos that
spin surprisingly stably despite their asymmetric appearance.'
acknowledgement: "This project was supported in part by the ERC Starting Grant iModel
(StG-2012-306877). Emily Whiting was supported by the ETH Zurich/Marie Curie COFUND
Postdoctoral Fellowship. \r\nFirst and foremost, we would like to thank our editor
Steve Marschner for his invaluable feedback. We were fortunate to get further help
from Maurizio Nitti for model design, Romain Prévost for Make-It-Stand comparisons,
Alexander Sorkine-Hornung, Kaan Yücer, and Changil Kim for video and photo assistance,
Ronnie Gänsli for metal casting, Alec Jacobson for the posed Elephant and Armadillo
models, and Romain Prévost and Amit Bermano for print preparation. Model sources
include: Woven Ring: generated by “Sculpture Generator 1” by Carlo H. Séquin, UC
Berkeley; Elephant: De Espona model library, courtesy of Robert Sumner; T-Rex: TurboSquid;
Armadillo: Stanford Computer Graphics Laboratory; and Utah Teapot: Martin Newell,
University of Utah. "
article_processing_charge: No
article_type: original
author:
- first_name: Moritz
full_name: Bächer, Moritz
last_name: Bächer
- first_name: Bernd
full_name: Bickel, Bernd
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
- first_name: Emily
full_name: Whiting, Emily
last_name: Whiting
- first_name: Olga
full_name: Sorkine Hornung, Olga
last_name: Sorkine Hornung
citation:
ama: 'Bächer M, Bickel B, Whiting E, Sorkine Hornung O. Spin it: Optimizing moment
of inertia for spinnable objects. Communications of the ACM. 2017;60(8):92-99.
doi:10.1145/3068766'
apa: 'Bächer, M., Bickel, B., Whiting, E., & Sorkine Hornung, O. (2017). Spin
it: Optimizing moment of inertia for spinnable objects. Communications of the
ACM. ACM. https://doi.org/10.1145/3068766'
chicago: 'Bächer, Moritz, Bernd Bickel, Emily Whiting, and Olga Sorkine Hornung.
“Spin It: Optimizing Moment of Inertia for Spinnable Objects.” Communications
of the ACM. ACM, 2017. https://doi.org/10.1145/3068766.'
ieee: 'M. Bächer, B. Bickel, E. Whiting, and O. Sorkine Hornung, “Spin it: Optimizing
moment of inertia for spinnable objects,” Communications of the ACM, vol.
60, no. 8. ACM, pp. 92–99, 2017.'
ista: 'Bächer M, Bickel B, Whiting E, Sorkine Hornung O. 2017. Spin it: Optimizing
moment of inertia for spinnable objects. Communications of the ACM. 60(8), 92–99.'
mla: 'Bächer, Moritz, et al. “Spin It: Optimizing Moment of Inertia for Spinnable
Objects.” Communications of the ACM, vol. 60, no. 8, ACM, 2017, pp. 92–99,
doi:10.1145/3068766.'
short: M. Bächer, B. Bickel, E. Whiting, O. Sorkine Hornung, Communications of the
ACM 60 (2017) 92–99.
date_created: 2018-12-11T11:46:33Z
date_published: 2017-08-01T00:00:00Z
date_updated: 2025-08-05T14:20:24Z
day: '01'
department:
- _id: BeBi
doi: 10.1145/3068766
intvolume: ' 60'
issue: '8'
language:
- iso: eng
month: '08'
oa_version: None
page: 92 - 99
publication: Communications of the ACM
publication_status: published
publisher: ACM
publist_id: '7370'
quality_controlled: '1'
related_material:
record:
- id: '2080'
relation: earlier_version
status: public
scopus_import: '1'
status: public
title: 'Spin it: Optimizing moment of inertia for spinnable objects'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 60
year: '2017'
...
---
OA_place: publisher
OA_type: hybrid
_id: '453'
abstract:
- lang: eng
text: Most kinesin motors move in only one direction along microtubules. Members
of the kinesin-5 subfamily were initially described as unidirectional plus-end-directed
motors and shown to produce piconewton forces. However, some fungal kinesin-5
motors are bidirectional. The force production of a bidirectional kinesin-5 has
not yet been measured. Therefore, it remains unknown whether the mechanism of
the unconventional minus-end-directed motility differs fundamentally from that
of plus-end-directed stepping. Using force spectroscopy, we have measured here
the forces that ensembles of purified budding yeast kinesin-5 Cin8 produce in
microtubule gliding assays in both plus- and minus-end direction. Correlation
analysis of pause forces demonstrated that individual Cin8 molecules produce additive
forces in both directions of movement. In ensembles, Cin8 motors were able to
produce single-motor forces up to a magnitude of ∼1.5 pN. Hence, these properties
appear to be conserved within the kinesin-5 subfamily. Force production was largely
independent of the directionality of movement, indicating similarities between
the motility mechanisms for both directions. These results provide constraints
for the development of models for the bidirectional motility mechanism of fission
yeast kinesin-5 and provide insight into the function of this mitotic motor.
acknowledgement: 'The plasmid for full-length kinesin-1 was a gift from G. Holzwarth
and J. Macosko with permission from J. Howard. We thank I. Lueke and N. I. Cade
for technical assistance. G.P. thanks the Francis Crick Institute, and in particular
the Surrey and Salbreux groups, for their hospitality during his sabbatical stay,
as well as Imperial College London for making it possible. This work was supported
by the Francis Crick Institute, which receives its core funding from Cancer Research
UK (FC001163), the United Kingdom Medical Research Council (FC001163), and the Wellcome
Trust (FC001163), and by Imperial College London. J.R. was also supported by a Sir
Henry Wellcome Postdoctoral Fellowship (100145/Z/12/Z) and T.S. by the European
Research Council (Advanced Grant, project 323042). '
article_processing_charge: No
article_type: original
author:
- first_name: Todd
full_name: Fallesen, Todd
last_name: Fallesen
- first_name: Johanna
full_name: Roostalu, Johanna
last_name: Roostalu
- first_name: Christian F
full_name: Düllberg, Christian F
id: 459064DC-F248-11E8-B48F-1D18A9856A87
last_name: Düllberg
orcid: 0000-0001-6335-9748
- first_name: Gunnar
full_name: Pruessner, Gunnar
last_name: Pruessner
- first_name: Thomas
full_name: Surrey, Thomas
last_name: Surrey
citation:
ama: Fallesen T, Roostalu J, Düllberg CF, Pruessner G, Surrey T. Ensembles of bidirectional
kinesin Cin8 produce additive forces in both directions of movement. Biophysical
Journal. 2017;113(9):2055-2067. doi:10.1016/j.bpj.2017.09.006
apa: Fallesen, T., Roostalu, J., Düllberg, C. F., Pruessner, G., & Surrey, T.
(2017). Ensembles of bidirectional kinesin Cin8 produce additive forces in both
directions of movement. Biophysical Journal. Biophysical Society. https://doi.org/10.1016/j.bpj.2017.09.006
chicago: Fallesen, Todd, Johanna Roostalu, Christian F Düllberg, Gunnar Pruessner,
and Thomas Surrey. “Ensembles of Bidirectional Kinesin Cin8 Produce Additive Forces
in Both Directions of Movement.” Biophysical Journal. Biophysical Society,
2017. https://doi.org/10.1016/j.bpj.2017.09.006.
ieee: T. Fallesen, J. Roostalu, C. F. Düllberg, G. Pruessner, and T. Surrey, “Ensembles
of bidirectional kinesin Cin8 produce additive forces in both directions of movement,”
Biophysical Journal, vol. 113, no. 9. Biophysical Society, pp. 2055–2067,
2017.
ista: Fallesen T, Roostalu J, Düllberg CF, Pruessner G, Surrey T. 2017. Ensembles
of bidirectional kinesin Cin8 produce additive forces in both directions of movement.
Biophysical Journal. 113(9), 2055–2067.
mla: Fallesen, Todd, et al. “Ensembles of Bidirectional Kinesin Cin8 Produce Additive
Forces in Both Directions of Movement.” Biophysical Journal, vol. 113,
no. 9, Biophysical Society, 2017, pp. 2055–67, doi:10.1016/j.bpj.2017.09.006.
short: T. Fallesen, J. Roostalu, C.F. Düllberg, G. Pruessner, T. Surrey, Biophysical
Journal 113 (2017) 2055–2067.
date_created: 2018-12-11T11:46:33Z
date_published: 2017-11-07T00:00:00Z
date_updated: 2025-08-05T14:08:52Z
day: '07'
ddc:
- '570'
department:
- _id: MaLo
doi: 10.1016/j.bpj.2017.09.006
external_id:
pmid:
- '29117528'
file:
- access_level: open_access
checksum: 99a2474088e20ac74b1882c4fbbb45b1
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:14:03Z
date_updated: 2020-07-14T12:46:31Z
file_id: '5052'
file_name: IST-2018-965-v1+1_2017_Duellberg_Ensembles_of.pdf
file_size: 977192
relation: main_file
file_date_updated: 2020-07-14T12:46:31Z
has_accepted_license: '1'
intvolume: ' 113'
issue: '9'
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
page: 2055 - 2067
pmid: 1
publication: Biophysical Journal
publication_identifier:
eissn:
- 1542-0086
issn:
- 0006-3495
publication_status: published
publisher: Biophysical Society
publist_id: '7369'
pubrep_id: '965'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Ensembles of bidirectional kinesin Cin8 produce additive forces in both directions
of movement
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: 113
year: '2017'
...
---
_id: '459'
abstract:
- lang: eng
text: The social insects bees, wasps, ants, and termites are species-rich, occur
in many habitats, and often constitute a large part of the biomass. Many are also
invasive, including species of termites, the red imported fire ant, and the Argentine
ant. While invasive social insects have been a problem in Southern Europe for
some time, Central Europa was free of invasive ant species until recently because
most ants are adapted to warmer climates. Only in the 1990s, did Lasius neglectus,
a close relative of the common black garden ant, arrive in Germany. First described
in 1990 based on individuals collected in Budapest, the species has since been
detected for example in France, Germany, Spain, England, and Kyrgyzstan. The species
is spread with soil during construction work or plantings, and L. neglectus therefore
is often found in parks and botanical gardens. Another invasive ant now spreading
in southern Germany is Formica fuscocinerea, which occurs along rivers, including
in the sandy floodplains of the river Isar. As is typical of pioneer species,
F. fuscocinerea quickly becomes extremely abundant and therefore causes problems
for example on playgrounds in Munich. All invasive ant species are characterized
by cooperation across nests, leading to strongly interconnected, very large super-colonies.
The resulting dominance results in the extinction of native ant species as well
as other arthropod species and thus in the reduction of biodiversity.
article_processing_charge: No
author:
- first_name: Sylvia
full_name: Cremer, Sylvia
id: 2F64EC8C-F248-11E8-B48F-1D18A9856A87
last_name: Cremer
orcid: 0000-0002-2193-3868
citation:
ama: 'Cremer S. Invasive Ameisen in Europa: Wie sie sich ausbreiten und die heimische
Fauna verändern. Rundgespräche Forum Ökologie. 2017;46:105-116.'
apa: 'Cremer, S. (2017). Invasive Ameisen in Europa: Wie sie sich ausbreiten und
die heimische Fauna verändern. Rundgespräche Forum Ökologie. Verlag Dr.
Friedrich Pfeil.'
chicago: 'Cremer, Sylvia. “Invasive Ameisen in Europa: Wie Sie Sich Ausbreiten Und
Die Heimische Fauna Verändern.” Rundgespräche Forum Ökologie. Verlag Dr.
Friedrich Pfeil, 2017.'
ieee: 'S. Cremer, “Invasive Ameisen in Europa: Wie sie sich ausbreiten und die heimische
Fauna verändern,” Rundgespräche Forum Ökologie, vol. 46. Verlag Dr. Friedrich
Pfeil, pp. 105–116, 2017.'
ista: 'Cremer S. 2017. Invasive Ameisen in Europa: Wie sie sich ausbreiten und die
heimische Fauna verändern. Rundgespräche Forum Ökologie. 46, 105–116.'
mla: 'Cremer, Sylvia. “Invasive Ameisen in Europa: Wie Sie Sich Ausbreiten Und Die
Heimische Fauna Verändern.” Rundgespräche Forum Ökologie, vol. 46, Verlag
Dr. Friedrich Pfeil, 2017, pp. 105–16.'
short: S. Cremer, Rundgespräche Forum Ökologie 46 (2017) 105–116.
corr_author: '1'
date_created: 2018-12-11T11:46:35Z
date_published: 2017-04-04T00:00:00Z
date_updated: 2024-10-09T20:58:13Z
day: '04'
ddc:
- '592'
department:
- _id: SyCr
file:
- access_level: open_access
checksum: 4919baf9050415ca151fe22497379f78
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:15:52Z
date_updated: 2020-07-14T12:46:32Z
file_id: '5175'
file_name: IST-2018-962-v1+1_044676698_07_Cremer__Invasive_Ameisen_in_Europa_...__BY-ND_.pdf
file_size: 1711131
relation: main_file
file_date_updated: 2020-07-14T12:46:32Z
has_accepted_license: '1'
intvolume: ' 46'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nd/4.0/
month: '04'
oa: 1
oa_version: Published Version
page: 105 - 116
publication: Rundgespräche Forum Ökologie
publication_identifier:
issn:
- 2366-2875
publication_status: published
publisher: Verlag Dr. Friedrich Pfeil
publist_id: '7362'
pubrep_id: '962'
quality_controlled: '1'
status: public
title: 'Invasive Ameisen in Europa: Wie sie sich ausbreiten und die heimische Fauna
verändern'
tmp:
image: /image/cc_by_nd.png
legal_code_url: https://creativecommons.org/licenses/by-nd/4.0/legalcode
name: Creative Commons Attribution-NoDerivatives 4.0 International (CC BY-ND 4.0)
short: CC BY-ND (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 46
year: '2017'
...
---
OA_place: repository
OA_type: green
_id: '12193'
abstract:
- lang: eng
text: DNA methylation regulates eukaryotic gene expression and is extensively reprogrammed
during animal development. However, whether developmental methylation reprogramming
during the sporophytic life cycle of flowering plants regulates genes is presently
unknown. Here we report a distinctive gene-targeted RNA-directed DNA methylation
(RdDM) activity in the Arabidopsis thaliana male sexual lineage that regulates
gene expression in meiocytes. Loss of sexual-lineage-specific RdDM causes mis-splicing
of the MPS1 gene (also known as PRD2), thereby disrupting meiosis. Our results
establish a regulatory paradigm in which de novo methylation creates a cell-lineage-specific
epigenetic signature that controls gene expression and contributes to cellular
function in flowering plants.
acknowledgement: We thank Daniel Zilberman for intellectual contributions to this
work and assistance with manuscript preparation. We also thank Caroline Dean, Kirsten
Bomblies, Vinod Kumar, Siobhan Brady and Sophien Kamoun for comments on the manuscript,
Hugh Dickinson and Josephine Hellberg for developing the meiocyte isolation method,
Giles Oldroyd for the pGWB13-Bar vector, Elisa Fiume for the pMDC107-NTF vector,
Matthew Hartley, Matthew Couchman and Tjelvar Sten Gunnar Olsson for bioinformatics
support, and the John Innes Centre Bioimaging Facility (Elaine Barclay and Grant
Calder) for their assistance with microscopy. This work was funded by a Biotechnology
and Biological Sciences Research Council (BBSRC) David Phillips Fellowship (BBL0250431)
to X.F., a BBSRC grant (BBM01973X1) to J.H., and a Sainsbury PhD Studentship to
J.W.
article_processing_charge: No
article_type: original
author:
- first_name: James
full_name: Walker, James
last_name: Walker
- first_name: Hongbo
full_name: Gao, Hongbo
last_name: Gao
- first_name: Jingyi
full_name: Zhang, Jingyi
last_name: Zhang
- first_name: Billy
full_name: Aldridge, Billy
last_name: Aldridge
- first_name: Martin
full_name: Vickers, Martin
last_name: Vickers
- first_name: James D.
full_name: Higgins, James D.
last_name: Higgins
- first_name: Xiaoqi
full_name: Feng, Xiaoqi
id: e0164712-22ee-11ed-b12a-d80fcdf35958
last_name: Feng
orcid: 0000-0002-4008-1234
citation:
ama: Walker J, Gao H, Zhang J, et al. Sexual-lineage-specific DNA methylation regulates
meiosis in Arabidopsis. Nature Genetics. 2017;50(1):130-137. doi:10.1038/s41588-017-0008-5
apa: Walker, J., Gao, H., Zhang, J., Aldridge, B., Vickers, M., Higgins, J. D.,
& Feng, X. (2017). Sexual-lineage-specific DNA methylation regulates meiosis
in Arabidopsis. Nature Genetics. Nature Research. https://doi.org/10.1038/s41588-017-0008-5
chicago: Walker, James, Hongbo Gao, Jingyi Zhang, Billy Aldridge, Martin Vickers,
James D. Higgins, and Xiaoqi Feng. “Sexual-Lineage-Specific DNA Methylation Regulates
Meiosis in Arabidopsis.” Nature Genetics. Nature Research, 2017. https://doi.org/10.1038/s41588-017-0008-5.
ieee: J. Walker et al., “Sexual-lineage-specific DNA methylation regulates
meiosis in Arabidopsis,” Nature Genetics, vol. 50, no. 1. Nature Research,
pp. 130–137, 2017.
ista: Walker J, Gao H, Zhang J, Aldridge B, Vickers M, Higgins JD, Feng X. 2017.
Sexual-lineage-specific DNA methylation regulates meiosis in Arabidopsis. Nature
Genetics. 50(1), 130–137.
mla: Walker, James, et al. “Sexual-Lineage-Specific DNA Methylation Regulates Meiosis
in Arabidopsis.” Nature Genetics, vol. 50, no. 1, Nature Research, 2017,
pp. 130–37, doi:10.1038/s41588-017-0008-5.
short: J. Walker, H. Gao, J. Zhang, B. Aldridge, M. Vickers, J.D. Higgins, X. Feng,
Nature Genetics 50 (2017) 130–137.
date_created: 2023-01-16T09:18:05Z
date_published: 2017-12-18T00:00:00Z
date_updated: 2026-03-19T10:51:18Z
day: '18'
department:
- _id: XiFe
doi: 10.1038/s41588-017-0008-5
extern: '1'
external_id:
pmid:
- '29255257'
intvolume: ' 50'
issue: '1'
keyword:
- Genetics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7611288/
month: '12'
oa: 1
oa_version: Submitted Version
page: 130-137
pmid: 1
publication: Nature Genetics
publication_identifier:
eissn:
- 1546-1718
issn:
- 1061-4036
publication_status: published
publisher: Nature Research
quality_controlled: '1'
scopus_import: '1'
status: public
title: Sexual-lineage-specific DNA methylation regulates meiosis in Arabidopsis
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 50
year: '2017'
...