---
_id: '1940'
abstract:
- lang: eng
text: We typically think of cells as responding to external signals independently
by regulating their gene expression levels, yet they often locally exchange information
and coordinate. Can such spatial coupling be of benefit for conveying signals
subject to gene regulatory noise? Here we extend our information-theoretic framework
for gene regulation to spatially extended systems. As an example, we consider
a lattice of nuclei responding to a concentration field of a transcriptional regulator
(the "input") by expressing a single diffusible target gene. When input
concentrations are low, diffusive coupling markedly improves information transmission;
optimal gene activation functions also systematically change. A qualitatively
new regulatory strategy emerges where individual cells respond to the input in
a nearly step-like fashion that is subsequently averaged out by strong diffusion.
While motivated by early patterning events in the Drosophila embryo, our framework
is generically applicable to spatially coupled stochastic gene expression models.
article_number: '062710'
author:
- first_name: Thomas R
full_name: Sokolowski, Thomas R
id: 3E999752-F248-11E8-B48F-1D18A9856A87
last_name: Sokolowski
orcid: 0000-0002-1287-3779
- first_name: Gasper
full_name: Tkacik, Gasper
id: 3D494DCA-F248-11E8-B48F-1D18A9856A87
last_name: Tkacik
orcid: 0000-0002-6699-1455
citation:
ama: Sokolowski TR, Tkačik G. Optimizing information flow in small genetic networks.
IV. Spatial coupling. Physical Review E Statistical Nonlinear and Soft Matter
Physics. 2015;91(6). doi:10.1103/PhysRevE.91.062710
apa: Sokolowski, T. R., & Tkačik, G. (2015). Optimizing information flow in
small genetic networks. IV. Spatial coupling. Physical Review E Statistical
Nonlinear and Soft Matter Physics. American Institute of Physics. https://doi.org/10.1103/PhysRevE.91.062710
chicago: Sokolowski, Thomas R, and Gašper Tkačik. “Optimizing Information Flow in
Small Genetic Networks. IV. Spatial Coupling.” Physical Review E Statistical
Nonlinear and Soft Matter Physics. American Institute of Physics, 2015. https://doi.org/10.1103/PhysRevE.91.062710.
ieee: T. R. Sokolowski and G. Tkačik, “Optimizing information flow in small genetic
networks. IV. Spatial coupling,” Physical Review E Statistical Nonlinear and
Soft Matter Physics, vol. 91, no. 6. American Institute of Physics, 2015.
ista: Sokolowski TR, Tkačik G. 2015. Optimizing information flow in small genetic
networks. IV. Spatial coupling. Physical Review E Statistical Nonlinear and Soft
Matter Physics. 91(6), 062710.
mla: Sokolowski, Thomas R., and Gašper Tkačik. “Optimizing Information Flow in Small
Genetic Networks. IV. Spatial Coupling.” Physical Review E Statistical Nonlinear
and Soft Matter Physics, vol. 91, no. 6, 062710, American Institute of Physics,
2015, doi:10.1103/PhysRevE.91.062710.
short: T.R. Sokolowski, G. Tkačik, Physical Review E Statistical Nonlinear and Soft
Matter Physics 91 (2015).
date_created: 2018-12-11T11:54:49Z
date_published: 2015-06-15T00:00:00Z
date_updated: 2021-01-12T06:54:13Z
day: '15'
department:
- _id: GaTk
doi: 10.1103/PhysRevE.91.062710
intvolume: ' 91'
issue: '6'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://arxiv.org/abs/1501.04015
month: '06'
oa: 1
oa_version: Preprint
publication: Physical Review E Statistical Nonlinear and Soft Matter Physics
publication_status: published
publisher: American Institute of Physics
publist_id: '5145'
quality_controlled: '1'
scopus_import: 1
status: public
title: Optimizing information flow in small genetic networks. IV. Spatial coupling
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 91
year: '2015'
...
---
_id: '1944'
acknowledgement: This work was supported by the European Research Council (project
ERC-2011-StG-20101109-PSDP); the Agency for Innovation by Science and Technology
(IWT) (predoctoral fellowship to H.R.); and the People Programme (Marie Curie Actions)
of the European Union
author:
- first_name: Hana
full_name: Rakusová, Hana
last_name: Rakusová
- first_name: Matyas
full_name: Fendrych, Matyas
id: 43905548-F248-11E8-B48F-1D18A9856A87
last_name: Fendrych
orcid: 0000-0002-9767-8699
- first_name: Jirí
full_name: Friml, Jirí
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
citation:
ama: Rakusová H, Fendrych M, Friml J. Intracellular trafficking and PIN-mediated
cell polarity during tropic responses in plants. Current Opinion in Plant Biology.
2015;23(2):116-123. doi:10.1016/j.pbi.2014.12.002
apa: Rakusová, H., Fendrych, M., & Friml, J. (2015). Intracellular trafficking
and PIN-mediated cell polarity during tropic responses in plants. Current Opinion
in Plant Biology. Elsevier. https://doi.org/10.1016/j.pbi.2014.12.002
chicago: Rakusová, Hana, Matyas Fendrych, and Jiří Friml. “Intracellular Trafficking
and PIN-Mediated Cell Polarity during Tropic Responses in Plants.” Current
Opinion in Plant Biology. Elsevier, 2015. https://doi.org/10.1016/j.pbi.2014.12.002.
ieee: H. Rakusová, M. Fendrych, and J. Friml, “Intracellular trafficking and PIN-mediated
cell polarity during tropic responses in plants,” Current Opinion in Plant
Biology, vol. 23, no. 2. Elsevier, pp. 116–123, 2015.
ista: Rakusová H, Fendrych M, Friml J. 2015. Intracellular trafficking and PIN-mediated
cell polarity during tropic responses in plants. Current Opinion in Plant Biology.
23(2), 116–123.
mla: Rakusová, Hana, et al. “Intracellular Trafficking and PIN-Mediated Cell Polarity
during Tropic Responses in Plants.” Current Opinion in Plant Biology, vol.
23, no. 2, Elsevier, 2015, pp. 116–23, doi:10.1016/j.pbi.2014.12.002.
short: H. Rakusová, M. Fendrych, J. Friml, Current Opinion in Plant Biology 23 (2015)
116–123.
date_created: 2018-12-11T11:54:51Z
date_published: 2015-02-01T00:00:00Z
date_updated: 2021-01-12T06:54:15Z
day: '01'
department:
- _id: JiFr
doi: 10.1016/j.pbi.2014.12.002
ec_funded: 1
intvolume: ' 23'
issue: '2'
language:
- iso: eng
month: '02'
oa_version: None
page: 116 - 123
project:
- _id: 25716A02-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '282300'
name: Polarity and subcellular dynamics in plants
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
publication: Current Opinion in Plant Biology
publication_status: published
publisher: Elsevier
publist_id: '5140'
quality_controlled: '1'
scopus_import: 1
status: public
title: Intracellular trafficking and PIN-mediated cell polarity during tropic responses
in plants
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 23
year: '2015'
...
---
_id: '1992'
abstract:
- lang: eng
text: "We present a method and a tool for generating succinct representations of
sets of concurrent traces. We focus on trace sets that contain all correct or
all incorrect permutations of events from a given trace. We represent trace sets
as HB-Formulas that are Boolean combinations of happens-before constraints between
events. To generate a representation of incorrect interleavings, our method iteratively
explores interleavings that violate the specification and gathers generalizations
of the discovered interleavings into an HB-Formula; its complement yields a representation
of correct interleavings.\r\n\r\nWe claim that our trace set representations can
drive diverse verification, fault localization, repair, and synthesis techniques
for concurrent programs. We demonstrate this by using our tool in three case studies
involving synchronization synthesis, bug summarization, and abstraction refinement
based verification. In each case study, our initial experimental results have
been promising.\r\n\r\nIn the first case study, we present an algorithm for inferring
missing synchronization from an HB-Formula representing correct interleavings
of a given trace. The algorithm applies rules to rewrite specific patterns in
the HB-Formula into locks, barriers, and wait-notify constructs. In the second
case study, we use an HB-Formula representing incorrect interleavings for bug
summarization. While the HB-Formula itself is a concise counterexample summary,
we present additional inference rules to help identify specific concurrency bugs
such as data races, define-use order violations, and two-stage access bugs. In
the final case study, we present a novel predicate learning procedure that uses
HB-Formulas representing abstract counterexamples to accelerate counterexample-guided
abstraction refinement (CEGAR). In each iteration of the CEGAR loop, the procedure
refines the abstraction to eliminate multiple spurious abstract counterexamples
drawn from the HB-Formula."
author:
- first_name: Ashutosh
full_name: Gupta, Ashutosh
id: 335E5684-F248-11E8-B48F-1D18A9856A87
last_name: Gupta
- first_name: Thomas A
full_name: Henzinger, Thomas A
id: 40876CD8-F248-11E8-B48F-1D18A9856A87
last_name: Henzinger
orcid: 0000−0002−2985−7724
- first_name: Arjun
full_name: Radhakrishna, Arjun
id: 3B51CAC4-F248-11E8-B48F-1D18A9856A87
last_name: Radhakrishna
- first_name: Roopsha
full_name: Samanta, Roopsha
id: 3D2AAC08-F248-11E8-B48F-1D18A9856A87
last_name: Samanta
- first_name: Thorsten
full_name: Tarrach, Thorsten
id: 3D6E8F2C-F248-11E8-B48F-1D18A9856A87
last_name: Tarrach
orcid: 0000-0003-4409-8487
citation:
ama: 'Gupta A, Henzinger TA, Radhakrishna A, Samanta R, Tarrach T. Succinct representation
of concurrent trace sets. In: ACM; 2015:433-444. doi:10.1145/2676726.2677008'
apa: 'Gupta, A., Henzinger, T. A., Radhakrishna, A., Samanta, R., & Tarrach,
T. (2015). Succinct representation of concurrent trace sets (pp. 433–444). Presented
at the POPL: Principles of Programming Languages, Mumbai, India: ACM. https://doi.org/10.1145/2676726.2677008'
chicago: Gupta, Ashutosh, Thomas A Henzinger, Arjun Radhakrishna, Roopsha Samanta,
and Thorsten Tarrach. “Succinct Representation of Concurrent Trace Sets,” 433–44.
ACM, 2015. https://doi.org/10.1145/2676726.2677008.
ieee: 'A. Gupta, T. A. Henzinger, A. Radhakrishna, R. Samanta, and T. Tarrach, “Succinct
representation of concurrent trace sets,” presented at the POPL: Principles of
Programming Languages, Mumbai, India, 2015, pp. 433–444.'
ista: 'Gupta A, Henzinger TA, Radhakrishna A, Samanta R, Tarrach T. 2015. Succinct
representation of concurrent trace sets. POPL: Principles of Programming Languages,
433–444.'
mla: Gupta, Ashutosh, et al. Succinct Representation of Concurrent Trace Sets.
ACM, 2015, pp. 433–44, doi:10.1145/2676726.2677008.
short: A. Gupta, T.A. Henzinger, A. Radhakrishna, R. Samanta, T. Tarrach, in:, ACM,
2015, pp. 433–444.
conference:
end_date: 2015-01-17
location: Mumbai, India
name: 'POPL: Principles of Programming Languages'
start_date: 2015-01-15
date_created: 2018-12-11T11:55:05Z
date_published: 2015-01-15T00:00:00Z
date_updated: 2021-01-12T06:54:33Z
day: '15'
ddc:
- '005'
department:
- _id: ToHe
doi: 10.1145/2676726.2677008
file:
- access_level: open_access
checksum: f0d4395b600f410a191256ac0b73af32
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:17:56Z
date_updated: 2020-07-14T12:45:22Z
file_id: '5314'
file_name: IST-2015-317-v1+1_author_version.pdf
file_size: 399462
relation: main_file
file_date_updated: 2020-07-14T12:45:22Z
has_accepted_license: '1'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Submitted Version
page: 433 - 444
publication_identifier:
isbn:
- 978-1-4503-3300-9
publication_status: published
publisher: ACM
publist_id: '5091'
pubrep_id: '317'
quality_controlled: '1'
scopus_import: 1
status: public
title: Succinct representation of concurrent trace sets
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2015'
...
---
_id: '1993'
abstract:
- lang: eng
text: 'The fitness effects of symbionts on their hosts can be context-dependent,
with usually benign symbionts causing detrimental effects when their hosts are
stressed, or typically parasitic symbionts providing protection towards their
hosts (e.g. against pathogen infection). Here, we studied the novel association
between the invasive garden ant Lasius neglectus and its fungal ectosymbiont Laboulbenia
formicarum for potential costs and benefits. We tested ants with different Laboulbenia
levels for their survival and immunity under resource limitation and exposure
to the obligate killing entomopathogen Metarhizium brunneum. While survival of
L. neglectus workers under starvation was significantly decreased with increasing
Laboulbenia levels, host survival under Metarhizium exposure increased with higher
levels of the ectosymbiont, suggesting a symbiont-mediated anti-pathogen protection,
which seems to be driven mechanistically by both improved sanitary behaviours
and an upregulated immune system. Ants with high Laboulbenia levels showed significantly
longer self-grooming and elevated expression of immune genes relevant for wound
repair and antifungal responses (β-1,3-glucan binding protein, Prophenoloxidase),
compared with ants carrying low Laboulbenia levels. This suggests that the ectosymbiont
Laboulbenia formicarum weakens its ant host by either direct resource exploitation
or the costs of an upregulated behavioural and immunological response, which,
however, provides a prophylactic protection upon later exposure to pathogens. '
acknowledged_ssus:
- _id: EM-Fac
acknowledgement: "Funding was obtained by the German Research Foundation (CR 118–2)
and an ERC StG (243071) by the European Research Council (both to S.C.).\r\nWe thank
Line V. Ugelvig for help with ant collection and statistical discussion, Xavier
Espadaler for detailed information on the ant collection site, Birgit Lautenschläger
for the electron microscopy images and Eva Sixt for ant drawings. We further thank
Jørgen Eilenberg for the fungal strain, Meghan L. Vyleta for genetic strain characterization
and immune gene primer development, Paul Schmid-Hempel for discussion, and Line
V. Ugelvig, Xavier Espadaler and Christopher D. Pull for comments on the manuscript.
S.C., M.K. and S.T. conceived the study; M.K. and A.V.G. performed the experiments;
M.K. performed the statistical analysis; S.C. and M.K. wrote the manuscript with
intense contributions of A.V.G. and S.T.; all authors approved the manuscript."
article_number: '20141976'
article_processing_charge: No
article_type: original
author:
- first_name: Matthias
full_name: Konrad, Matthias
id: 46528076-F248-11E8-B48F-1D18A9856A87
last_name: Konrad
- first_name: Anna V
full_name: Grasse, Anna V
id: 406F989C-F248-11E8-B48F-1D18A9856A87
last_name: Grasse
- first_name: Simon
full_name: Tragust, Simon
id: 35A7A418-F248-11E8-B48F-1D18A9856A87
last_name: Tragust
- first_name: Sylvia
full_name: Cremer, Sylvia
id: 2F64EC8C-F248-11E8-B48F-1D18A9856A87
last_name: Cremer
orcid: 0000-0002-2193-3868
citation:
ama: Konrad M, Grasse AV, Tragust S, Cremer S. Anti-pathogen protection versus survival
costs mediated by an ectosymbiont in an ant host. Proceedings of the Royal
Society of London Series B Biological Sciences. 2015;282(1799). doi:10.1098/rspb.2014.1976
apa: Konrad, M., Grasse, A. V., Tragust, S., & Cremer, S. (2015). Anti-pathogen
protection versus survival costs mediated by an ectosymbiont in an ant host. Proceedings
of the Royal Society of London Series B Biological Sciences. The Royal Society.
https://doi.org/10.1098/rspb.2014.1976
chicago: Konrad, Matthias, Anna V Grasse, Simon Tragust, and Sylvia Cremer. “Anti-Pathogen
Protection versus Survival Costs Mediated by an Ectosymbiont in an Ant Host.”
Proceedings of the Royal Society of London Series B Biological Sciences.
The Royal Society, 2015. https://doi.org/10.1098/rspb.2014.1976.
ieee: M. Konrad, A. V. Grasse, S. Tragust, and S. Cremer, “Anti-pathogen protection
versus survival costs mediated by an ectosymbiont in an ant host,” Proceedings
of the Royal Society of London Series B Biological Sciences, vol. 282, no.
1799. The Royal Society, 2015.
ista: Konrad M, Grasse AV, Tragust S, Cremer S. 2015. Anti-pathogen protection versus
survival costs mediated by an ectosymbiont in an ant host. Proceedings of the
Royal Society of London Series B Biological Sciences. 282(1799), 20141976.
mla: Konrad, Matthias, et al. “Anti-Pathogen Protection versus Survival Costs Mediated
by an Ectosymbiont in an Ant Host.” Proceedings of the Royal Society of London
Series B Biological Sciences, vol. 282, no. 1799, 20141976, The Royal Society,
2015, doi:10.1098/rspb.2014.1976.
short: M. Konrad, A.V. Grasse, S. Tragust, S. Cremer, Proceedings of the Royal Society
of London Series B Biological Sciences 282 (2015).
date_created: 2018-12-11T11:55:06Z
date_published: 2015-01-22T00:00:00Z
date_updated: 2023-02-23T14:06:41Z
day: '22'
department:
- _id: SyCr
doi: 10.1098/rspb.2014.1976
ec_funded: 1
external_id:
pmid:
- '25473011'
intvolume: ' 282'
issue: '1799'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4286035/
month: '01'
oa: 1
oa_version: Submitted Version
pmid: 1
project:
- _id: 25DC711C-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '243071'
name: 'Social Vaccination in Ant Colonies: from Individual Mechanisms to Society
Effects'
- _id: 25DAF0B2-B435-11E9-9278-68D0E5697425
grant_number: CR-118/3-1
name: Host-Parasite Coevolution
publication: Proceedings of the Royal Society of London Series B Biological Sciences
publication_identifier:
eissn:
- 1471-2954
issn:
- 0962-8452
publication_status: published
publisher: The Royal Society
publist_id: '5090'
quality_controlled: '1'
related_material:
record:
- id: '9740'
relation: research_data
status: public
scopus_import: '1'
status: public
title: Anti-pathogen protection versus survival costs mediated by an ectosymbiont
in an ant host
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 282
year: '2015'
...
---
_id: '1997'
abstract:
- lang: eng
text: We prove that the three-state toric homogeneous Markov chain model has Markov
degree two. In algebraic terminology this means, that a certain class of toric
ideals is generated by quadratic binomials. This was conjectured by Haws, Martin
del Campo, Takemura and Yoshida, who proved that they are generated by degree
six binomials.
author:
- first_name: Patrik
full_name: Noren, Patrik
id: 46870C74-F248-11E8-B48F-1D18A9856A87
last_name: Noren
citation:
ama: Noren P. The three-state toric homogeneous Markov chain model has Markov degree
two. Journal of Symbolic Computation. 2015;68/Part 2(May-June):285-296.
doi:10.1016/j.jsc.2014.09.014
apa: Noren, P. (2015). The three-state toric homogeneous Markov chain model has
Markov degree two. Journal of Symbolic Computation. Elsevier. https://doi.org/10.1016/j.jsc.2014.09.014
chicago: Noren, Patrik. “The Three-State Toric Homogeneous Markov Chain Model Has
Markov Degree Two.” Journal of Symbolic Computation. Elsevier, 2015. https://doi.org/10.1016/j.jsc.2014.09.014.
ieee: P. Noren, “The three-state toric homogeneous Markov chain model has Markov
degree two,” Journal of Symbolic Computation, vol. 68/Part 2, no. May-June.
Elsevier, pp. 285–296, 2015.
ista: Noren P. 2015. The three-state toric homogeneous Markov chain model has Markov
degree two. Journal of Symbolic Computation. 68/Part 2(May-June), 285–296.
mla: Noren, Patrik. “The Three-State Toric Homogeneous Markov Chain Model Has Markov
Degree Two.” Journal of Symbolic Computation, vol. 68/Part 2, no. May-June,
Elsevier, 2015, pp. 285–96, doi:10.1016/j.jsc.2014.09.014.
short: P. Noren, Journal of Symbolic Computation 68/Part 2 (2015) 285–296.
date_created: 2018-12-11T11:55:07Z
date_published: 2015-05-01T00:00:00Z
date_updated: 2021-01-12T06:54:35Z
day: '01'
department:
- _id: CaUh
doi: 10.1016/j.jsc.2014.09.014
issue: May-June
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://arxiv.org/abs/1207.0077
month: '05'
oa: 1
oa_version: Preprint
page: 285 - 296
publication: Journal of Symbolic Computation
publication_status: published
publisher: Elsevier
publist_id: '5082'
quality_controlled: '1'
scopus_import: 1
status: public
title: The three-state toric homogeneous Markov chain model has Markov degree two
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 68/Part 2
year: '2015'
...
---
_id: '2006'
abstract:
- lang: eng
text: 'The monotone secant conjecture posits a rich class of polynomial systems,
all of whose solutions are real. These systems come from the Schubert calculus
on flag manifolds, and the monotone secant conjecture is a compelling generalization
of the Shapiro conjecture for Grassmannians (Theorem of Mukhin, Tarasov, and Varchenko).
We present some theoretical evidence for this conjecture, as well as computational
evidence obtained by 1.9 teraHertz-years of computing, and we discuss some of
the phenomena we observed in our data. '
article_processing_charge: No
author:
- first_name: Nicolas
full_name: Hein, Nicolas
last_name: Hein
- first_name: Christopher
full_name: Hillar, Christopher
last_name: Hillar
- first_name: Abraham
full_name: Martin Del Campo Sanchez, Abraham
id: 4CF47F6A-F248-11E8-B48F-1D18A9856A87
last_name: Martin Del Campo Sanchez
- first_name: Frank
full_name: Sottile, Frank
last_name: Sottile
- first_name: Zach
full_name: Teitler, Zach
last_name: Teitler
citation:
ama: Hein N, Hillar C, Martin del Campo Sanchez A, Sottile F, Teitler Z. The monotone
secant conjecture in the real Schubert calculus. Experimental Mathematics.
2015;24(3):261-269. doi:10.1080/10586458.2014.980044
apa: Hein, N., Hillar, C., Martin del Campo Sanchez, A., Sottile, F., & Teitler,
Z. (2015). The monotone secant conjecture in the real Schubert calculus. Experimental
Mathematics. Taylor & Francis. https://doi.org/10.1080/10586458.2014.980044
chicago: Hein, Nicolas, Christopher Hillar, Abraham Martin del Campo Sanchez, Frank
Sottile, and Zach Teitler. “The Monotone Secant Conjecture in the Real Schubert
Calculus.” Experimental Mathematics. Taylor & Francis, 2015. https://doi.org/10.1080/10586458.2014.980044.
ieee: N. Hein, C. Hillar, A. Martin del Campo Sanchez, F. Sottile, and Z. Teitler,
“The monotone secant conjecture in the real Schubert calculus,” Experimental
Mathematics, vol. 24, no. 3. Taylor & Francis, pp. 261–269, 2015.
ista: Hein N, Hillar C, Martin del Campo Sanchez A, Sottile F, Teitler Z. 2015.
The monotone secant conjecture in the real Schubert calculus. Experimental Mathematics.
24(3), 261–269.
mla: Hein, Nicolas, et al. “The Monotone Secant Conjecture in the Real Schubert
Calculus.” Experimental Mathematics, vol. 24, no. 3, Taylor & Francis,
2015, pp. 261–69, doi:10.1080/10586458.2014.980044.
short: N. Hein, C. Hillar, A. Martin del Campo Sanchez, F. Sottile, Z. Teitler,
Experimental Mathematics 24 (2015) 261–269.
date_created: 2018-12-11T11:55:10Z
date_published: 2015-06-23T00:00:00Z
date_updated: 2021-01-12T06:54:40Z
day: '23'
department:
- _id: CaUh
doi: 10.1080/10586458.2014.980044
intvolume: ' 24'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://arxiv.org/abs/1109.3436
month: '06'
oa: 1
oa_version: Preprint
page: 261 - 269
publication: Experimental Mathematics
publication_status: published
publisher: Taylor & Francis
publist_id: '5070'
quality_controlled: '1'
scopus_import: 1
status: public
title: The monotone secant conjecture in the real Schubert calculus
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 24
year: '2015'
...
---
_id: '2008'
abstract:
- lang: eng
text: The paper describes a generalized iterative proportional fitting procedure
that can be used for maximum likelihood estimation in a special class of the general
log-linear model. The models in this class, called relational, apply to multivariate
discrete sample spaces that do not necessarily have a Cartesian product structure
and may not contain an overall effect. When applied to the cell probabilities,
the models without the overall effect are curved exponential families and the
values of the sufficient statistics are reproduced by the MLE only up to a constant
of proportionality. The paper shows that Iterative Proportional Fitting, Generalized
Iterative Scaling, and Improved Iterative Scaling fail to work for such models.
The algorithm proposed here is based on iterated Bregman projections. As a by-product,
estimates of the multiplicative parameters are also obtained. An implementation
of the algorithm is available as an R-package.
acknowledgement: Part of the material presented here was contained in the PhD thesis
of the first author to which the second author and Thomas Richardson were advisers.
The authors wish to thank him for several comments and suggestions. We also thank
the reviewers and the Associate Editor for helpful comments. The proof of Proposition 1
uses the idea of Olga Klimova, to whom the authors are also indebted. The second
author was supported in part by Grant K-106154 from the Hungarian National Scientific
Research Fund (OTKA).
author:
- first_name: Anna
full_name: Klimova, Anna
id: 31934120-F248-11E8-B48F-1D18A9856A87
last_name: Klimova
- first_name: Tamás
full_name: Rudas, Tamás
last_name: Rudas
citation:
ama: Klimova A, Rudas T. Iterative scaling in curved exponential families. Scandinavian
Journal of Statistics. 2015;42(3):832-847. doi:10.1111/sjos.12139
apa: Klimova, A., & Rudas, T. (2015). Iterative scaling in curved exponential
families. Scandinavian Journal of Statistics. Wiley. https://doi.org/10.1111/sjos.12139
chicago: Klimova, Anna, and Tamás Rudas. “Iterative Scaling in Curved Exponential
Families.” Scandinavian Journal of Statistics. Wiley, 2015. https://doi.org/10.1111/sjos.12139.
ieee: A. Klimova and T. Rudas, “Iterative scaling in curved exponential families,”
Scandinavian Journal of Statistics, vol. 42, no. 3. Wiley, pp. 832–847,
2015.
ista: Klimova A, Rudas T. 2015. Iterative scaling in curved exponential families.
Scandinavian Journal of Statistics. 42(3), 832–847.
mla: Klimova, Anna, and Tamás Rudas. “Iterative Scaling in Curved Exponential Families.”
Scandinavian Journal of Statistics, vol. 42, no. 3, Wiley, 2015, pp. 832–47,
doi:10.1111/sjos.12139.
short: A. Klimova, T. Rudas, Scandinavian Journal of Statistics 42 (2015) 832–847.
date_created: 2018-12-11T11:55:11Z
date_published: 2015-09-01T00:00:00Z
date_updated: 2021-01-12T06:54:41Z
day: '01'
department:
- _id: CaUh
doi: 10.1111/sjos.12139
intvolume: ' 42'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://arxiv.org/abs/1307.3282
month: '09'
oa: 1
oa_version: Preprint
page: 832 - 847
publication: Scandinavian Journal of Statistics
publication_status: published
publisher: Wiley
publist_id: '5068'
quality_controlled: '1'
scopus_import: 1
status: public
title: Iterative scaling in curved exponential families
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 42
year: '2015'
...
---
_id: '2014'
abstract:
- lang: eng
text: The concepts of faithfulness and strong-faithfulness are important for statistical
learning of graphical models. Graphs are not sufficient for describing the association
structure of a discrete distribution. Hypergraphs representing hierarchical log-linear
models are considered instead, and the concept of parametric (strong-) faithfulness
with respect to a hypergraph is introduced. Strong-faithfulness ensures the existence
of uniformly consistent parameter estimators and enables building uniformly consistent
procedures for a hypergraph search. The strength of association in a discrete
distribution can be quantified with various measures, leading to different concepts
of strong-faithfulness. Lower and upper bounds for the proportions of distributions
that do not satisfy strong-faithfulness are computed for different parameterizations
and measures of association.
author:
- first_name: Anna
full_name: Klimova, Anna
id: 31934120-F248-11E8-B48F-1D18A9856A87
last_name: Klimova
- first_name: Caroline
full_name: Uhler, Caroline
id: 49ADD78E-F248-11E8-B48F-1D18A9856A87
last_name: Uhler
orcid: 0000-0002-7008-0216
- first_name: Tamás
full_name: Rudas, Tamás
last_name: Rudas
citation:
ama: Klimova A, Uhler C, Rudas T. Faithfulness and learning hypergraphs from discrete
distributions. Computational Statistics & Data Analysis. 2015;87(7):57-72.
doi:10.1016/j.csda.2015.01.017
apa: Klimova, A., Uhler, C., & Rudas, T. (2015). Faithfulness and learning hypergraphs
from discrete distributions. Computational Statistics & Data Analysis.
Elsevier. https://doi.org/10.1016/j.csda.2015.01.017
chicago: Klimova, Anna, Caroline Uhler, and Tamás Rudas. “Faithfulness and Learning
Hypergraphs from Discrete Distributions.” Computational Statistics & Data
Analysis. Elsevier, 2015. https://doi.org/10.1016/j.csda.2015.01.017.
ieee: A. Klimova, C. Uhler, and T. Rudas, “Faithfulness and learning hypergraphs
from discrete distributions,” Computational Statistics & Data Analysis,
vol. 87, no. 7. Elsevier, pp. 57–72, 2015.
ista: Klimova A, Uhler C, Rudas T. 2015. Faithfulness and learning hypergraphs from
discrete distributions. Computational Statistics & Data Analysis. 87(7), 57–72.
mla: Klimova, Anna, et al. “Faithfulness and Learning Hypergraphs from Discrete
Distributions.” Computational Statistics & Data Analysis, vol. 87,
no. 7, Elsevier, 2015, pp. 57–72, doi:10.1016/j.csda.2015.01.017.
short: A. Klimova, C. Uhler, T. Rudas, Computational Statistics & Data Analysis
87 (2015) 57–72.
date_created: 2018-12-11T11:55:13Z
date_published: 2015-07-01T00:00:00Z
date_updated: 2021-01-12T06:54:43Z
day: '01'
department:
- _id: CaUh
doi: 10.1016/j.csda.2015.01.017
intvolume: ' 87'
issue: '7'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://arxiv.org/abs/1404.6617
month: '07'
oa: 1
oa_version: Preprint
page: 57 - 72
publication: Computational Statistics & Data Analysis
publication_status: published
publisher: Elsevier
publist_id: '5062'
quality_controlled: '1'
scopus_import: 1
status: public
title: Faithfulness and learning hypergraphs from discrete distributions
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 87
year: '2015'
...
---
_id: '2025'
abstract:
- lang: eng
text: Small GTP-binding proteins of the Ras superfamily play diverse roles in intracellular
trafficking. Among them, the Rab, Arf, and Rho families function in successive
steps of vesicle transport, in forming vesicles from donor membranes, directing
vesicle trafficking toward target membranes and docking vesicles onto target membranes.
These proteins act as molecular switches that are controlled by a cycle of GTP
binding and hydrolysis regulated by guanine nucleotide exchange factors (GEFs)
and GTPase-activating proteins (GAPs). In this study we explored the role of GAPs
in the regulation of the endocytic pathway using fluorescently labeled yeast mating
pheromone α-factor. Among 25 non-essential GAP mutants, we found that deletion
of the GLO3 gene, encoding Arf-GAP protein, caused defective internalization of
fluorescently labeled α-factor. Quantitative analysis revealed that glo3Δ cells
show defective α-factor binding to the cell surface. Interestingly, Ste2p, the
α-factor receptor, was mis-localized from the plasma membrane to the vacuole in
glo3Δ cells. Domain deletion mutants of Glo3p revealed that a GAP-independent
function, as well as the GAP activity, of Glo3p is important for both α-factor
binding and Ste2p localization at the cell surface. Additionally, we found that
deletion of the GLO3 gene affects the size and number of Arf1p-residing Golgi
compartments and causes a defect in transport from the TGN to the plasma membrane.
Furthermore, we demonstrated that glo3Δ cells were defective in the late endosome-to-TGN
transport pathway, but not in the early endosome-to-TGN transport pathway. These
findings suggest novel roles for Arf-GAP Glo3p in endocytic recycling of cell
surface proteins.
author:
- first_name: Daiki
full_name: Kawada, Daiki
last_name: Kawada
- first_name: Hiromu
full_name: Kobayashi, Hiromu
last_name: Kobayashi
- first_name: Tsuyoshi
full_name: Tomita, Tsuyoshi
last_name: Tomita
- first_name: Eisuke
full_name: Nakata, Eisuke
last_name: Nakata
- first_name: Makoto
full_name: Nagano, Makoto
last_name: Nagano
- first_name: Daria E
full_name: Siekhaus, Daria E
id: 3D224B9E-F248-11E8-B48F-1D18A9856A87
last_name: Siekhaus
orcid: 0000-0001-8323-8353
- first_name: Junko
full_name: Toshima, Junko
last_name: Toshima
- first_name: Jiro
full_name: Toshimaa, Jiro
last_name: Toshimaa
citation:
ama: Kawada D, Kobayashi H, Tomita T, et al. The yeast Arf-GAP Glo3p is required
for the endocytic recycling of cell surface proteins. Biochimica et Biophysica
Acta - Molecular Cell Research. 2015;1853(1):144-156. doi:10.1016/j.bbamcr.2014.10.009
apa: Kawada, D., Kobayashi, H., Tomita, T., Nakata, E., Nagano, M., Siekhaus, D.
E., … Toshimaa, J. (2015). The yeast Arf-GAP Glo3p is required for the endocytic
recycling of cell surface proteins. Biochimica et Biophysica Acta - Molecular
Cell Research. Elsevier. https://doi.org/10.1016/j.bbamcr.2014.10.009
chicago: Kawada, Daiki, Hiromu Kobayashi, Tsuyoshi Tomita, Eisuke Nakata, Makoto
Nagano, Daria E Siekhaus, Junko Toshima, and Jiro Toshimaa. “The Yeast Arf-GAP
Glo3p Is Required for the Endocytic Recycling of Cell Surface Proteins.” Biochimica
et Biophysica Acta - Molecular Cell Research. Elsevier, 2015. https://doi.org/10.1016/j.bbamcr.2014.10.009.
ieee: D. Kawada et al., “The yeast Arf-GAP Glo3p is required for the endocytic
recycling of cell surface proteins,” Biochimica et Biophysica Acta - Molecular
Cell Research, vol. 1853, no. 1. Elsevier, pp. 144–156, 2015.
ista: Kawada D, Kobayashi H, Tomita T, Nakata E, Nagano M, Siekhaus DE, Toshima
J, Toshimaa J. 2015. The yeast Arf-GAP Glo3p is required for the endocytic recycling
of cell surface proteins. Biochimica et Biophysica Acta - Molecular Cell Research.
1853(1), 144–156.
mla: Kawada, Daiki, et al. “The Yeast Arf-GAP Glo3p Is Required for the Endocytic
Recycling of Cell Surface Proteins.” Biochimica et Biophysica Acta - Molecular
Cell Research, vol. 1853, no. 1, Elsevier, 2015, pp. 144–56, doi:10.1016/j.bbamcr.2014.10.009.
short: D. Kawada, H. Kobayashi, T. Tomita, E. Nakata, M. Nagano, D.E. Siekhaus,
J. Toshima, J. Toshimaa, Biochimica et Biophysica Acta - Molecular Cell Research
1853 (2015) 144–156.
date_created: 2018-12-11T11:55:17Z
date_published: 2015-01-01T00:00:00Z
date_updated: 2021-01-12T06:54:48Z
day: '01'
ddc:
- '570'
department:
- _id: DaSi
doi: 10.1016/j.bbamcr.2014.10.009
file:
- access_level: open_access
checksum: 5bb328edebb6a91337cadd7d63f961b7
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:12:18Z
date_updated: 2020-07-14T12:45:25Z
file_id: '4936'
file_name: IST-2016-615-v1+1_BBAMCR.pdf
file_size: 926685
relation: main_file
file_date_updated: 2020-07-14T12:45:25Z
has_accepted_license: '1'
intvolume: ' 1853'
issue: '1'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Submitted Version
page: 144 - 156
publication: Biochimica et Biophysica Acta - Molecular Cell Research
publication_status: published
publisher: Elsevier
publist_id: '5047'
pubrep_id: '615'
quality_controlled: '1'
scopus_import: 1
status: public
title: The yeast Arf-GAP Glo3p is required for the endocytic recycling of cell surface
proteins
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: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 1853
year: '2015'
...
---
_id: '2030'
abstract:
- lang: eng
text: A hybrid-parallel direct-numerical-simulation method with application to turbulent
Taylor-Couette flow is presented. The Navier-Stokes equations are discretized
in cylindrical coordinates with the spectral Fourier-Galerkin method in the axial
and azimuthal directions, and high-order finite differences in the radial direction.
Time is advanced by a second-order, semi-implicit projection scheme, which requires
the solution of five Helmholtz/Poisson equations, avoids staggered grids and renders
very small slip velocities. Nonlinear terms are evaluated with the pseudospectral
method. The code is parallelized using a hybrid MPI-OpenMP strategy, which, compared
with a flat MPI parallelization, is simpler to implement, allows to reduce inter-node
communications and MPI overhead that become relevant at high processor-core counts,
and helps to contain the memory footprint. A strong scaling study shows that the
hybrid code maintains scalability up to more than 20,000 processor cores and thus
allows to perform simulations at higher resolutions than previously feasible.
In particular, it opens up the possibility to simulate turbulent Taylor-Couette
flows at Reynolds numbers up to O(105). This enables to probe hydrodynamic turbulence
in Keplerian flows in experimentally relevant regimes.
author:
- first_name: Liang
full_name: Shi, Liang
id: 374A3F1A-F248-11E8-B48F-1D18A9856A87
last_name: Shi
- first_name: Markus
full_name: Rampp, Markus
last_name: Rampp
- first_name: Björn
full_name: Hof, Björn
id: 3A374330-F248-11E8-B48F-1D18A9856A87
last_name: Hof
orcid: 0000-0003-2057-2754
- first_name: Marc
full_name: Avila, Marc
last_name: Avila
citation:
ama: Shi L, Rampp M, Hof B, Avila M. A hybrid MPI-OpenMP parallel implementation
for pseudospectral simulations with application to Taylor-Couette flow. Computers
and Fluids. 2015;106(1):1-11. doi:10.1016/j.compfluid.2014.09.021
apa: Shi, L., Rampp, M., Hof, B., & Avila, M. (2015). A hybrid MPI-OpenMP parallel
implementation for pseudospectral simulations with application to Taylor-Couette
flow. Computers and Fluids. Elsevier. https://doi.org/10.1016/j.compfluid.2014.09.021
chicago: Shi, Liang, Markus Rampp, Björn Hof, and Marc Avila. “A Hybrid MPI-OpenMP
Parallel Implementation for Pseudospectral Simulations with Application to Taylor-Couette
Flow.” Computers and Fluids. Elsevier, 2015. https://doi.org/10.1016/j.compfluid.2014.09.021.
ieee: L. Shi, M. Rampp, B. Hof, and M. Avila, “A hybrid MPI-OpenMP parallel implementation
for pseudospectral simulations with application to Taylor-Couette flow,” Computers
and Fluids, vol. 106, no. 1. Elsevier, pp. 1–11, 2015.
ista: Shi L, Rampp M, Hof B, Avila M. 2015. A hybrid MPI-OpenMP parallel implementation
for pseudospectral simulations with application to Taylor-Couette flow. Computers
and Fluids. 106(1), 1–11.
mla: Shi, Liang, et al. “A Hybrid MPI-OpenMP Parallel Implementation for Pseudospectral
Simulations with Application to Taylor-Couette Flow.” Computers and Fluids,
vol. 106, no. 1, Elsevier, 2015, pp. 1–11, doi:10.1016/j.compfluid.2014.09.021.
short: L. Shi, M. Rampp, B. Hof, M. Avila, Computers and Fluids 106 (2015) 1–11.
date_created: 2018-12-11T11:55:18Z
date_published: 2015-01-01T00:00:00Z
date_updated: 2021-01-12T06:54:51Z
day: '01'
department:
- _id: BjHo
doi: 10.1016/j.compfluid.2014.09.021
intvolume: ' 106'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://arxiv.org/abs/1311.2481
month: '01'
oa: 1
oa_version: Preprint
page: 1 - 11
publication: Computers and Fluids
publication_status: published
publisher: Elsevier
publist_id: '5042'
quality_controlled: '1'
scopus_import: 1
status: public
title: A hybrid MPI-OpenMP parallel implementation for pseudospectral simulations
with application to Taylor-Couette flow
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 106
year: '2015'
...
---
_id: '2034'
abstract:
- lang: eng
text: Opacity is a generic security property, that has been defined on (non-probabilistic)
transition systems and later on Markov chains with labels. For a secret predicate,
given as a subset of runs, and a function describing the view of an external observer,
the value of interest for opacity is a measure of the set of runs disclosing the
secret. We extend this definition to the richer framework of Markov decision processes,
where non-deterministicchoice is combined with probabilistic transitions, and
we study related decidability problems with partial or complete observation hypotheses
for the schedulers. We prove that all questions are decidable with complete observation
and ω-regular secrets. With partial observation, we prove that all quantitative
questions are undecidable but the question whether a system is almost surely non-opaquebecomes
decidable for a restricted class of ω-regular secrets, as well as for all ω-regular
secrets under finite-memory schedulers.
author:
- first_name: Béatrice
full_name: Bérard, Béatrice
last_name: Bérard
- first_name: Krishnendu
full_name: Chatterjee, Krishnendu
id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
last_name: Chatterjee
orcid: 0000-0002-4561-241X
- first_name: Nathalie
full_name: Sznajder, Nathalie
last_name: Sznajder
citation:
ama: Bérard B, Chatterjee K, Sznajder N. Probabilistic opacity for Markov decision
processes. Information Processing Letters. 2015;115(1):52-59. doi:10.1016/j.ipl.2014.09.001
apa: Bérard, B., Chatterjee, K., & Sznajder, N. (2015). Probabilistic opacity
for Markov decision processes. Information Processing Letters. Elsevier.
https://doi.org/10.1016/j.ipl.2014.09.001
chicago: Bérard, Béatrice, Krishnendu Chatterjee, and Nathalie Sznajder. “Probabilistic
Opacity for Markov Decision Processes.” Information Processing Letters.
Elsevier, 2015. https://doi.org/10.1016/j.ipl.2014.09.001.
ieee: B. Bérard, K. Chatterjee, and N. Sznajder, “Probabilistic opacity for Markov
decision processes,” Information Processing Letters, vol. 115, no. 1.
Elsevier, pp. 52–59, 2015.
ista: Bérard B, Chatterjee K, Sznajder N. 2015. Probabilistic opacity for Markov
decision processes. Information Processing Letters. 115(1), 52–59.
mla: Bérard, Béatrice, et al. “Probabilistic Opacity for Markov Decision Processes.”
Information Processing Letters, vol. 115, no. 1, Elsevier, 2015, pp. 52–59,
doi:10.1016/j.ipl.2014.09.001.
short: B. Bérard, K. Chatterjee, N. Sznajder, Information Processing Letters 115
(2015) 52–59.
date_created: 2018-12-11T11:55:20Z
date_published: 2015-01-01T00:00:00Z
date_updated: 2021-01-12T06:54:52Z
day: '01'
department:
- _id: KrCh
doi: 10.1016/j.ipl.2014.09.001
ec_funded: 1
intvolume: ' 115'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://arxiv.org/abs/1407.4225
month: '01'
oa: 1
oa_version: Preprint
page: 52 - 59
project:
- _id: 2584A770-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P 23499-N23
name: Modern Graph Algorithmic Techniques in Formal Verification
- _id: 25863FF4-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: S11407
name: Game Theory
- _id: 2581B60A-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '279307'
name: 'Quantitative Graph Games: Theory and Applications'
- _id: 2587B514-B435-11E9-9278-68D0E5697425
name: Microsoft Research Faculty Fellowship
publication: ' Information Processing Letters'
publication_status: published
publisher: Elsevier
publist_id: '5025'
quality_controlled: '1'
scopus_import: 1
status: public
title: Probabilistic opacity for Markov decision processes
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 115
year: '2015'
...
---
_id: '2035'
abstract:
- lang: eng
text: "Considering a continuous self-map and the induced endomorphism on homology,
we study the eigenvalues and eigenspaces of the latter. Taking a filtration of
representations, we define the persistence of the eigenspaces, effectively introducing
a hierarchical organization of the map. The algorithm that computes this information
for a finite sample is proved to be stable, and to give the correct answer for
a sufficiently dense sample. Results computed with an implementation of the algorithm
provide evidence of its practical utility.\r\n"
acknowledgement: This research is partially supported by the Toposys project FP7-ICT-318493-STREP,
by ESF under the ACAT Research Network Programme, by the Russian Government under
mega project 11.G34.31.0053, and by the Polish National Science Center under Grant
No. N201 419639.
author:
- first_name: Herbert
full_name: Edelsbrunner, Herbert
id: 3FB178DA-F248-11E8-B48F-1D18A9856A87
last_name: Edelsbrunner
orcid: 0000-0002-9823-6833
- first_name: Grzegorz
full_name: Jablonski, Grzegorz
id: 4483EF78-F248-11E8-B48F-1D18A9856A87
last_name: Jablonski
orcid: 0000-0002-3536-9866
- first_name: Marian
full_name: Mrozek, Marian
last_name: Mrozek
citation:
ama: Edelsbrunner H, Jablonski G, Mrozek M. The persistent homology of a self-map.
Foundations of Computational Mathematics. 2015;15(5):1213-1244. doi:10.1007/s10208-014-9223-y
apa: Edelsbrunner, H., Jablonski, G., & Mrozek, M. (2015). The persistent homology
of a self-map. Foundations of Computational Mathematics. Springer. https://doi.org/10.1007/s10208-014-9223-y
chicago: Edelsbrunner, Herbert, Grzegorz Jablonski, and Marian Mrozek. “The Persistent
Homology of a Self-Map.” Foundations of Computational Mathematics. Springer,
2015. https://doi.org/10.1007/s10208-014-9223-y.
ieee: H. Edelsbrunner, G. Jablonski, and M. Mrozek, “The persistent homology of
a self-map,” Foundations of Computational Mathematics, vol. 15, no. 5.
Springer, pp. 1213–1244, 2015.
ista: Edelsbrunner H, Jablonski G, Mrozek M. 2015. The persistent homology of a
self-map. Foundations of Computational Mathematics. 15(5), 1213–1244.
mla: Edelsbrunner, Herbert, et al. “The Persistent Homology of a Self-Map.” Foundations
of Computational Mathematics, vol. 15, no. 5, Springer, 2015, pp. 1213–44,
doi:10.1007/s10208-014-9223-y.
short: H. Edelsbrunner, G. Jablonski, M. Mrozek, Foundations of Computational Mathematics
15 (2015) 1213–1244.
date_created: 2018-12-11T11:55:20Z
date_published: 2015-10-01T00:00:00Z
date_updated: 2021-01-12T06:54:53Z
day: '01'
ddc:
- '000'
department:
- _id: HeEd
doi: 10.1007/s10208-014-9223-y
ec_funded: 1
file:
- access_level: open_access
checksum: 3566f3a8b0c1bc550e62914a88c584ff
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:08:10Z
date_updated: 2020-07-14T12:45:26Z
file_id: '4670'
file_name: IST-2016-486-v1+1_s10208-014-9223-y.pdf
file_size: 1317546
relation: main_file
file_date_updated: 2020-07-14T12:45:26Z
has_accepted_license: '1'
intvolume: ' 15'
issue: '5'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
page: 1213 - 1244
project:
- _id: 255D761E-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '318493'
name: Topological Complex Systems
publication: Foundations of Computational Mathematics
publication_status: published
publisher: Springer
publist_id: '5022'
pubrep_id: '486'
quality_controlled: '1'
scopus_import: 1
status: public
title: The persistent homology of a self-map
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: 15
year: '2015'
...
---
_id: '2085'
abstract:
- lang: eng
text: 'We study the spectrum of a large system of N identical bosons interacting
via a two-body potential with strength 1/N. In this mean-field regime, Bogoliubov''s
theory predicts that the spectrum of the N-particle Hamiltonian can be approximated
by that of an effective quadratic Hamiltonian acting on Fock space, which describes
the fluctuations around a condensed state. Recently, Bogoliubov''s theory has
been justified rigorously in the case that the low-energy eigenvectors of the
N-particle Hamiltonian display complete condensation in the unique minimizer of
the corresponding Hartree functional. In this paper, we shall justify Bogoliubov''s
theory for the high-energy part of the spectrum of the N-particle Hamiltonian
corresponding to (non-linear) excited states of the Hartree functional. Moreover,
we shall extend the existing results on the excitation spectrum to the case of
non-uniqueness and/or degeneracy of the Hartree minimizer. In particular, the
latter covers the case of rotating Bose gases, when the rotation speed is large
enough to break the symmetry and to produce multiple quantized vortices in the
Hartree minimizer. '
author:
- first_name: Phan
full_name: Nam, Phan
id: 404092F4-F248-11E8-B48F-1D18A9856A87
last_name: Nam
- first_name: Robert
full_name: Seiringer, Robert
id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
last_name: Seiringer
orcid: 0000-0002-6781-0521
citation:
ama: Nam P, Seiringer R. Collective excitations of Bose gases in the mean-field
regime. Archive for Rational Mechanics and Analysis. 2015;215(2):381-417.
doi:10.1007/s00205-014-0781-6
apa: Nam, P., & Seiringer, R. (2015). Collective excitations of Bose gases in
the mean-field regime. Archive for Rational Mechanics and Analysis. Springer.
https://doi.org/10.1007/s00205-014-0781-6
chicago: Nam, Phan, and Robert Seiringer. “Collective Excitations of Bose Gases
in the Mean-Field Regime.” Archive for Rational Mechanics and Analysis.
Springer, 2015. https://doi.org/10.1007/s00205-014-0781-6.
ieee: P. Nam and R. Seiringer, “Collective excitations of Bose gases in the mean-field
regime,” Archive for Rational Mechanics and Analysis, vol. 215, no. 2.
Springer, pp. 381–417, 2015.
ista: Nam P, Seiringer R. 2015. Collective excitations of Bose gases in the mean-field
regime. Archive for Rational Mechanics and Analysis. 215(2), 381–417.
mla: Nam, Phan, and Robert Seiringer. “Collective Excitations of Bose Gases in the
Mean-Field Regime.” Archive for Rational Mechanics and Analysis, vol. 215,
no. 2, Springer, 2015, pp. 381–417, doi:10.1007/s00205-014-0781-6.
short: P. Nam, R. Seiringer, Archive for Rational Mechanics and Analysis 215 (2015)
381–417.
date_created: 2018-12-11T11:55:37Z
date_published: 2015-02-01T00:00:00Z
date_updated: 2021-01-12T06:55:13Z
day: '01'
department:
- _id: RoSe
doi: 10.1007/s00205-014-0781-6
intvolume: ' 215'
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://arxiv.org/abs/1402.1153
month: '02'
oa: 1
oa_version: Preprint
page: 381 - 417
publication: Archive for Rational Mechanics and Analysis
publication_status: published
publisher: Springer
publist_id: '4951'
quality_controlled: '1'
scopus_import: 1
status: public
title: Collective excitations of Bose gases in the mean-field regime
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 215
year: '2015'
...
---
_id: '2166'
abstract:
- lang: eng
text: 'We consider the spectral statistics of large random band matrices on mesoscopic
energy scales. We show that the correlation function of the local eigenvalue density
exhibits a universal power law behaviour that differs from the Wigner-Dyson- Mehta
statistics. This law had been predicted in the physics literature by Altshuler
and Shklovskii in (Zh Eksp Teor Fiz (Sov Phys JETP) 91(64):220(127), 1986); it
describes the correlations of the eigenvalue density in general metallic sampleswith
weak disorder. Our result rigorously establishes the Altshuler-Shklovskii formulas
for band matrices. In two dimensions, where the leading term vanishes owing to
an algebraic cancellation, we identify the first non-vanishing term and show that
it differs substantially from the prediction of Kravtsov and Lerner in (Phys Rev
Lett 74:2563-2566, 1995). The proof is given in the current paper and its companion
(Ann. H. Poincaré. arXiv:1309.5107, 2014). '
author:
- first_name: László
full_name: Erdös, László
id: 4DBD5372-F248-11E8-B48F-1D18A9856A87
last_name: Erdös
orcid: 0000-0001-5366-9603
- first_name: Antti
full_name: Knowles, Antti
last_name: Knowles
citation:
ama: 'Erdös L, Knowles A. The Altshuler-Shklovskii formulas for random band matrices
I: the unimodular case. Communications in Mathematical Physics. 2015;333(3):1365-1416.
doi:10.1007/s00220-014-2119-5'
apa: 'Erdös, L., & Knowles, A. (2015). The Altshuler-Shklovskii formulas for
random band matrices I: the unimodular case. Communications in Mathematical
Physics. Springer. https://doi.org/10.1007/s00220-014-2119-5'
chicago: 'Erdös, László, and Antti Knowles. “The Altshuler-Shklovskii Formulas for
Random Band Matrices I: The Unimodular Case.” Communications in Mathematical
Physics. Springer, 2015. https://doi.org/10.1007/s00220-014-2119-5.'
ieee: 'L. Erdös and A. Knowles, “The Altshuler-Shklovskii formulas for random band
matrices I: the unimodular case,” Communications in Mathematical Physics,
vol. 333, no. 3. Springer, pp. 1365–1416, 2015.'
ista: 'Erdös L, Knowles A. 2015. The Altshuler-Shklovskii formulas for random band
matrices I: the unimodular case. Communications in Mathematical Physics. 333(3),
1365–1416.'
mla: 'Erdös, László, and Antti Knowles. “The Altshuler-Shklovskii Formulas for Random
Band Matrices I: The Unimodular Case.” Communications in Mathematical Physics,
vol. 333, no. 3, Springer, 2015, pp. 1365–416, doi:10.1007/s00220-014-2119-5.'
short: L. Erdös, A. Knowles, Communications in Mathematical Physics 333 (2015) 1365–1416.
date_created: 2018-12-11T11:56:05Z
date_published: 2015-02-01T00:00:00Z
date_updated: 2021-01-12T06:55:43Z
day: '01'
department:
- _id: LaEr
doi: 10.1007/s00220-014-2119-5
intvolume: ' 333'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://arxiv.org/abs/1309.5106
month: '02'
oa: 1
oa_version: Preprint
page: 1365 - 1416
publication: Communications in Mathematical Physics
publication_status: published
publisher: Springer
publist_id: '4818'
quality_controlled: '1'
scopus_import: 1
status: public
title: 'The Altshuler-Shklovskii formulas for random band matrices I: the unimodular
case'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 333
year: '2015'
...
---
_id: '2271'
abstract:
- lang: eng
text: "A class of valued constraint satisfaction problems (VCSPs) is characterised
by a valued constraint language, a fixed set of cost functions on a finite domain.
Finite-valued constraint languages contain functions that take on rational costs
and general-valued constraint languages contain functions that take on rational
or infinite costs. An instance of the problem is specified by a sum of functions
from the language with the goal to minimise the sum. This framework includes and
generalises well-studied constraint satisfaction problems (CSPs) and maximum constraint
satisfaction problems (Max-CSPs).\r\nOur main result is a precise algebraic characterisation
of valued constraint languages whose instances can be solved exactly by the basic
linear programming relaxation (BLP). For a general-valued constraint language
Γ, BLP is a decision procedure for Γ if and only if Γ admits a symmetric fractional
polymorphism of every arity. For a finite-valued constraint language Γ, BLP is
a decision procedure if and only if Γ admits a symmetric fractional polymorphism
of some arity, or equivalently, if Γ admits a symmetric fractional polymorphism
of arity 2.\r\nUsing these results, we obtain tractability of several novel and
previously widely-open classes of VCSPs, including problems over valued constraint
languages that are: (1) submodular on arbitrary lattices; (2) bisubmodular (also
known as k-submodular) on arbitrary finite domains; (3) weakly (and hence strongly)
tree-submodular on arbitrary trees. "
arxiv: 1
author:
- first_name: Vladimir
full_name: Kolmogorov, Vladimir
id: 3D50B0BA-F248-11E8-B48F-1D18A9856A87
last_name: Kolmogorov
- first_name: Johan
full_name: Thapper, Johan
last_name: Thapper
- first_name: Stanislav
full_name: Živný, Stanislav
last_name: Živný
citation:
ama: Kolmogorov V, Thapper J, Živný S. The power of linear programming for general-valued
CSPs. SIAM Journal on Computing. 2015;44(1):1-36. doi:10.1137/130945648
apa: Kolmogorov, V., Thapper, J., & Živný, S. (2015). The power of linear programming
for general-valued CSPs. SIAM Journal on Computing. SIAM. https://doi.org/10.1137/130945648
chicago: Kolmogorov, Vladimir, Johan Thapper, and Stanislav Živný. “The Power of
Linear Programming for General-Valued CSPs.” SIAM Journal on Computing.
SIAM, 2015. https://doi.org/10.1137/130945648.
ieee: V. Kolmogorov, J. Thapper, and S. Živný, “The power of linear programming
for general-valued CSPs,” SIAM Journal on Computing, vol. 44, no. 1. SIAM,
pp. 1–36, 2015.
ista: Kolmogorov V, Thapper J, Živný S. 2015. The power of linear programming for
general-valued CSPs. SIAM Journal on Computing. 44(1), 1–36.
mla: Kolmogorov, Vladimir, et al. “The Power of Linear Programming for General-Valued
CSPs.” SIAM Journal on Computing, vol. 44, no. 1, SIAM, 2015, pp. 1–36,
doi:10.1137/130945648.
short: V. Kolmogorov, J. Thapper, S. Živný, SIAM Journal on Computing 44 (2015)
1–36.
date_created: 2018-12-11T11:56:41Z
date_published: 2015-02-01T00:00:00Z
date_updated: 2023-02-23T10:46:30Z
day: '01'
department:
- _id: VlKo
doi: 10.1137/130945648
external_id:
arxiv:
- '1311.4219'
intvolume: ' 44'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://arxiv.org/abs/1311.4219
month: '02'
oa: 1
oa_version: Preprint
page: 1 - 36
publication: SIAM Journal on Computing
publication_status: published
publisher: SIAM
publist_id: '4673'
quality_controlled: '1'
related_material:
record:
- id: '2518'
relation: earlier_version
status: public
scopus_import: 1
status: public
title: The power of linear programming for general-valued CSPs
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 44
year: '2015'
...
---
_id: '6736'
abstract:
- lang: eng
text: Motivated by the significant performance gains which polar codes experience
under successive cancellation list decoding, their scaling exponent is studied
as a function of the list size. In particular, the error probability is fixed,
and the tradeoff between the block length and back-off from capacity is analyzed.
A lower bound is provided on the error probability under MAP decoding with list
size L for any binary-input memoryless output-symmetric channel and for any class
of linear codes such that their minimum distance is unbounded as the block length
grows large. Then, it is shown that under MAP decoding, although the introduction
of a list can significantly improve the involved constants, the scaling exponent
itself, i.e., the speed at which capacity is approached, stays unaffected for
any finite list size. In particular, this result applies to polar codes, since
their minimum distance tends to infinity as the block length increases. A similar
result is proved for genie-aided successive cancellation decoding when transmission
takes place over the binary erasure channel, namely, the scaling exponent remains
constant for any fixed number of helps from the genie. Note that since genie-aided
successive cancellation decoding might be strictly worse than successive cancellation
list decoding, the problem of establishing the scaling exponent of the latter
remains open.
arxiv: 1
author:
- first_name: Marco
full_name: Mondelli, Marco
id: 27EB676C-8706-11E9-9510-7717E6697425
last_name: Mondelli
orcid: 0000-0002-3242-7020
- first_name: Hamed
full_name: Hassani, Hamed
last_name: Hassani
- first_name: Rudiger
full_name: Urbanke, Rudiger
last_name: Urbanke
citation:
ama: Mondelli M, Hassani H, Urbanke R. Scaling exponent of list decoders with applications
to polar codes. IEEE Transactions on Information Theory. 2015;61(9):4838-4851.
doi:10.1109/tit.2015.2453315
apa: Mondelli, M., Hassani, H., & Urbanke, R. (2015). Scaling exponent of list
decoders with applications to polar codes. IEEE Transactions on Information
Theory. IEEE. https://doi.org/10.1109/tit.2015.2453315
chicago: Mondelli, Marco, Hamed Hassani, and Rudiger Urbanke. “Scaling Exponent
of List Decoders with Applications to Polar Codes.” IEEE Transactions on Information
Theory. IEEE, 2015. https://doi.org/10.1109/tit.2015.2453315.
ieee: M. Mondelli, H. Hassani, and R. Urbanke, “Scaling exponent of list decoders
with applications to polar codes,” IEEE Transactions on Information Theory,
vol. 61, no. 9. IEEE, pp. 4838–4851, 2015.
ista: Mondelli M, Hassani H, Urbanke R. 2015. Scaling exponent of list decoders
with applications to polar codes. IEEE Transactions on Information Theory. 61(9),
4838–4851.
mla: Mondelli, Marco, et al. “Scaling Exponent of List Decoders with Applications
to Polar Codes.” IEEE Transactions on Information Theory, vol. 61, no.
9, IEEE, 2015, pp. 4838–51, doi:10.1109/tit.2015.2453315.
short: M. Mondelli, H. Hassani, R. Urbanke, IEEE Transactions on Information Theory
61 (2015) 4838–4851.
date_created: 2019-07-31T06:50:34Z
date_published: 2015-09-01T00:00:00Z
date_updated: 2021-01-12T08:08:45Z
day: '01'
doi: 10.1109/tit.2015.2453315
extern: '1'
external_id:
arxiv:
- '1304.5220'
intvolume: ' 61'
issue: '9'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1304.5220
month: '09'
oa: 1
oa_version: Preprint
page: 4838-4851
publication: IEEE Transactions on Information Theory
publication_status: published
publisher: IEEE
quality_controlled: '1'
status: public
title: Scaling exponent of list decoders with applications to polar codes
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 61
year: '2015'
...
---
_id: '6737'
abstract:
- lang: eng
text: This paper presents polar coding schemes for the two-user discrete memoryless
broadcast channel (DM-BC) which achieve Marton's region with both common and private
messages. This is the best achievable rate region known to date, and it is tight
for all classes of two-user DM-BCs whose capacity regions are known. To accomplish
this task, we first construct polar codes for both the superposition as well as
binning strategy. By combining these two schemes, we obtain Marton's region with
private messages only. Finally, we show how to handle the case of common information.
The proposed coding schemes possess the usual advantages of polar codes, i.e.,
they have low encoding and decoding complexity and a superpolynomial decay rate
of the error probability. We follow the lead of Goela, Abbe, and Gastpar, who
recently introduced polar codes emulating the superposition and binning schemes.
To align the polar indices, for both schemes, their solution involves some degradedness
constraints that are assumed to hold between the auxiliary random variables and
channel outputs. To remove these constraints, we consider the transmission of
k blocks and employ a chaining construction that guarantees the proper alignment
of the polarized indices. The techniques described in this paper are quite general,
and they can be adopted to many other multiterminal scenarios whenever there polar
indices need to be aligned.
arxiv: 1
author:
- first_name: Marco
full_name: Mondelli, Marco
id: 27EB676C-8706-11E9-9510-7717E6697425
last_name: Mondelli
orcid: 0000-0002-3242-7020
- first_name: Hamed
full_name: Hassani, Hamed
last_name: Hassani
- first_name: Igal
full_name: Sason, Igal
last_name: Sason
- first_name: Rudiger
full_name: Urbanke, Rudiger
last_name: Urbanke
citation:
ama: Mondelli M, Hassani H, Sason I, Urbanke R. Achieving Marton’s region for broadcast
channels using polar codes. IEEE Transactions on Information Theory. 2015;61(2):783-800.
doi:10.1109/tit.2014.2368555
apa: Mondelli, M., Hassani, H., Sason, I., & Urbanke, R. (2015). Achieving Marton’s
region for broadcast channels using polar codes. IEEE Transactions on Information
Theory. IEEE. https://doi.org/10.1109/tit.2014.2368555
chicago: Mondelli, Marco, Hamed Hassani, Igal Sason, and Rudiger Urbanke. “Achieving
Marton’s Region for Broadcast Channels Using Polar Codes.” IEEE Transactions
on Information Theory. IEEE, 2015. https://doi.org/10.1109/tit.2014.2368555.
ieee: M. Mondelli, H. Hassani, I. Sason, and R. Urbanke, “Achieving Marton’s region
for broadcast channels using polar codes,” IEEE Transactions on Information
Theory, vol. 61, no. 2. IEEE, pp. 783–800, 2015.
ista: Mondelli M, Hassani H, Sason I, Urbanke R. 2015. Achieving Marton’s region
for broadcast channels using polar codes. IEEE Transactions on Information Theory.
61(2), 783–800.
mla: Mondelli, Marco, et al. “Achieving Marton’s Region for Broadcast Channels Using
Polar Codes.” IEEE Transactions on Information Theory, vol. 61, no. 2,
IEEE, 2015, pp. 783–800, doi:10.1109/tit.2014.2368555.
short: M. Mondelli, H. Hassani, I. Sason, R. Urbanke, IEEE Transactions on Information
Theory 61 (2015) 783–800.
date_created: 2019-07-31T07:03:38Z
date_published: 2015-02-01T00:00:00Z
date_updated: 2021-01-12T08:08:46Z
day: '01'
doi: 10.1109/tit.2014.2368555
extern: '1'
external_id:
arxiv:
- '1401.6060'
intvolume: ' 61'
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1401.6060
month: '02'
oa: 1
oa_version: Preprint
page: 783-800
publication: IEEE Transactions on Information Theory
publication_status: published
publisher: IEEE
quality_controlled: '1'
status: public
title: Achieving Marton’s region for broadcast channels using polar codes
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 61
year: '2015'
...
---
_id: '7070'
abstract:
- lang: eng
text: 'Torque magnetization measurements on YBa2Cu3Oy (YBCO) at doping y=6.67 (p=0.12),
in dc fields (B) up to 33 T and temperatures down to 4.5 K, show that weak diamagnetism
persists above the extrapolated irreversibility field Hirr(T=0)≈24 T. The differential
susceptibility dM/dB, however, is more rapidly suppressed for B≳16 T than expected
from the properties of the low field superconducting state, and saturates at a
low value for fields B≳24 T. In addition, torque measurements on a p=0.11 YBCO
crystal in pulsed field up to 65 T and temperatures down to 8 K show similar behavior,
with no additional features at higher fields. We offer two candidate scenarios
to explain these observations: (a) superconductivity survives but is heavily suppressed
at high field by competition with charge-density-wave (CDW) order; (b) static
superconductivity disappears near 24 T and is followed by a region of fluctuating
superconductivity, which causes dM/dB to saturate at high field. The diamagnetic
signal observed above 50 T for the p=0.11 crystal at 40 K and below may be caused
by changes in the normal state susceptibility rather than bulk or fluctuating
superconductivity. There will be orbital (Landau) diamagnetism from electron pockets
and possibly a reduction in spin susceptibility caused by the stronger three-dimensional
ordered CDW.'
article_number: '180509'
article_processing_charge: No
article_type: original
author:
- first_name: Jing Fei
full_name: Yu, Jing Fei
last_name: Yu
- first_name: B. J.
full_name: Ramshaw, B. J.
last_name: Ramshaw
- first_name: I.
full_name: Kokanović, I.
last_name: Kokanović
- first_name: Kimberly A
full_name: Modic, Kimberly A
id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
last_name: Modic
orcid: 0000-0001-9760-3147
- first_name: N.
full_name: Harrison, N.
last_name: Harrison
- first_name: James
full_name: Day, James
last_name: Day
- first_name: Ruixing
full_name: Liang, Ruixing
last_name: Liang
- first_name: W. N.
full_name: Hardy, W. N.
last_name: Hardy
- first_name: D. A.
full_name: Bonn, D. A.
last_name: Bonn
- first_name: A.
full_name: McCollam, A.
last_name: McCollam
- first_name: S. R.
full_name: Julian, S. R.
last_name: Julian
- first_name: J. R.
full_name: Cooper, J. R.
last_name: Cooper
citation:
ama: Yu JF, Ramshaw BJ, Kokanović I, et al. Magnetization of underdoped YBa2Cu3Oy
above the irreversibility field. Physical Review B. 2015;92(18). doi:10.1103/physrevb.92.180509
apa: Yu, J. F., Ramshaw, B. J., Kokanović, I., Modic, K. A., Harrison, N., Day,
J., … Cooper, J. R. (2015). Magnetization of underdoped YBa2Cu3Oy above the irreversibility
field. Physical Review B. APS. https://doi.org/10.1103/physrevb.92.180509
chicago: Yu, Jing Fei, B. J. Ramshaw, I. Kokanović, Kimberly A Modic, N. Harrison,
James Day, Ruixing Liang, et al. “Magnetization of Underdoped YBa2Cu3Oy above
the Irreversibility Field.” Physical Review B. APS, 2015. https://doi.org/10.1103/physrevb.92.180509.
ieee: J. F. Yu et al., “Magnetization of underdoped YBa2Cu3Oy above the irreversibility
field,” Physical Review B, vol. 92, no. 18. APS, 2015.
ista: Yu JF, Ramshaw BJ, Kokanović I, Modic KA, Harrison N, Day J, Liang R, Hardy
WN, Bonn DA, McCollam A, Julian SR, Cooper JR. 2015. Magnetization of underdoped
YBa2Cu3Oy above the irreversibility field. Physical Review B. 92(18), 180509.
mla: Yu, Jing Fei, et al. “Magnetization of Underdoped YBa2Cu3Oy above the Irreversibility
Field.” Physical Review B, vol. 92, no. 18, 180509, APS, 2015, doi:10.1103/physrevb.92.180509.
short: J.F. Yu, B.J. Ramshaw, I. Kokanović, K.A. Modic, N. Harrison, J. Day, R.
Liang, W.N. Hardy, D.A. Bonn, A. McCollam, S.R. Julian, J.R. Cooper, Physical
Review B 92 (2015).
date_created: 2019-11-19T13:22:06Z
date_published: 2015-11-23T00:00:00Z
date_updated: 2021-01-12T08:11:42Z
day: '23'
doi: 10.1103/physrevb.92.180509
extern: '1'
intvolume: ' 92'
issue: '18'
language:
- iso: eng
month: '11'
oa_version: None
publication: Physical Review B
publication_identifier:
issn:
- 1098-0121
- 1550-235X
publication_status: published
publisher: APS
quality_controlled: '1'
status: public
title: Magnetization of underdoped YBa2Cu3Oy above the irreversibility field
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 92
year: '2015'
...
---
_id: '7456'
abstract:
- lang: eng
text: The rational design of monodisperse ferroelectric nanocrystals with controlled
size and shape and their organization into hierarchical structures has been a
critical step for understanding the polar ordering in nanoscale ferroelectrics,
as well as the design of nanocrystal-based functional materials which harness
the properties of individual nanoparticles and the collective interactions between
them. We report here on the synthesis and self-assembly of aggregate-free, single-crystalline
titanium-based perovskite nanoparticles with controlled morphology and surface
composition by using a simple, easily scalable and highly versatile colloidal
route. Single-crystalline, non-aggregated BaTiO3 colloidal nanocrystals, used
as a model system, have been prepared under solvothermal conditions at temperatures
as low as 180 °C. The shape of the nanocrystals was tuned from spheroidal to cubic
upon changing the polarity of the solvent, whereas their size was varied from
16 to 30 nm for spheres and 5 to 78 nm for cubes by changing the concentration
of the precursors and the reaction time, respectively. The hydrophobic, oleic
acid-passivated nanoparticles exhibit very good solubility in non-polar solvents
and can be rendered dispersible in polar solvents by a simple process involving
the oxidative cleavage of the double bond upon treating the nanopowders with the
Lemieux–von Rudloff reagent. Lattice dynamic analysis indicated that regardless
of their size, BaTiO3 nanocrystals present local disorder within the perovskite
unit cell, associated with the existence of polar ordering. We also demonstrate
for the first time that, in addition to being used for fabricating large area,
crack-free, highly uniform films, BaTiO3 nanocubes can serve as building blocks
for the design of 2D and 3D mesoscale structures, such as superlattices and superparticles.
Interestingly, the type of superlattice structure (simple cubic or face centered
cubic) appears to be determined by the type of solvent in which the nanocrystals
were dispersed. This approach provides an excellent platform for the synthesis
of other titanium-based perovskite colloidal nanocrystals with controlled chemical
composition, surface structure and morphology and for their assembly into complex
architectures, therefore opening the door for the design of novel mesoscale functional
materials/nanocomposites with potential applications in energy conversion, data
storage and the biomedical field.
article_processing_charge: No
article_type: original
author:
- first_name: Daniela
full_name: Caruntu, Daniela
last_name: Caruntu
- first_name: Taha
full_name: Rostamzadeh, Taha
last_name: Rostamzadeh
- first_name: Tommaso
full_name: Costanzo, Tommaso
id: D93824F4-D9BA-11E9-BB12-F207E6697425
last_name: Costanzo
orcid: 0000-0001-9732-3815
- first_name: Saman
full_name: Salemizadeh Parizi, Saman
last_name: Salemizadeh Parizi
- first_name: Gabriel
full_name: Caruntu, Gabriel
last_name: Caruntu
citation:
ama: Caruntu D, Rostamzadeh T, Costanzo T, Salemizadeh Parizi S, Caruntu G. Solvothermal
synthesis and controlled self-assembly of monodisperse titanium-based perovskite
colloidal nanocrystals. Nanoscale. 2015;7(30):12955-12969. doi:10.1039/c5nr00737b
apa: Caruntu, D., Rostamzadeh, T., Costanzo, T., Salemizadeh Parizi, S., & Caruntu,
G. (2015). Solvothermal synthesis and controlled self-assembly of monodisperse
titanium-based perovskite colloidal nanocrystals. Nanoscale. RSC. https://doi.org/10.1039/c5nr00737b
chicago: Caruntu, Daniela, Taha Rostamzadeh, Tommaso Costanzo, Saman Salemizadeh
Parizi, and Gabriel Caruntu. “Solvothermal Synthesis and Controlled Self-Assembly
of Monodisperse Titanium-Based Perovskite Colloidal Nanocrystals.” Nanoscale.
RSC, 2015. https://doi.org/10.1039/c5nr00737b.
ieee: D. Caruntu, T. Rostamzadeh, T. Costanzo, S. Salemizadeh Parizi, and G. Caruntu,
“Solvothermal synthesis and controlled self-assembly of monodisperse titanium-based
perovskite colloidal nanocrystals,” Nanoscale, vol. 7, no. 30. RSC, pp.
12955–12969, 2015.
ista: Caruntu D, Rostamzadeh T, Costanzo T, Salemizadeh Parizi S, Caruntu G. 2015.
Solvothermal synthesis and controlled self-assembly of monodisperse titanium-based
perovskite colloidal nanocrystals. Nanoscale. 7(30), 12955–12969.
mla: Caruntu, Daniela, et al. “Solvothermal Synthesis and Controlled Self-Assembly
of Monodisperse Titanium-Based Perovskite Colloidal Nanocrystals.” Nanoscale,
vol. 7, no. 30, RSC, 2015, pp. 12955–69, doi:10.1039/c5nr00737b.
short: D. Caruntu, T. Rostamzadeh, T. Costanzo, S. Salemizadeh Parizi, G. Caruntu,
Nanoscale 7 (2015) 12955–12969.
date_created: 2020-02-05T14:16:37Z
date_published: 2015-08-14T00:00:00Z
date_updated: 2023-02-23T13:08:24Z
day: '14'
doi: 10.1039/c5nr00737b
extern: '1'
external_id:
pmid:
- '26168304'
intvolume: ' 7'
issue: '30'
language:
- iso: eng
month: '08'
oa_version: None
page: 12955-12969
pmid: 1
publication: Nanoscale
publication_identifier:
issn:
- 2040-3364
- 2040-3372
publication_status: published
publisher: RSC
quality_controlled: '1'
status: public
title: Solvothermal synthesis and controlled self-assembly of monodisperse titanium-based
perovskite colloidal nanocrystals
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 7
year: '2015'
...
---
_id: '7457'
abstract:
- lang: eng
text: A new organic–inorganic ferroelectric hybrid capacitor designed by uniformly
incorporating surface modified monodisperse 15 nm ferroelectric BaTiO3 nanocubes
into non-polar polymer blends of poly(methyl methacrylate) (PMMA) polymer and
acrylonitrile-butadiene-styrene (ABS) terpolymer is described. The investigation
of spatial distribution of nanofillers via a non-distractive thermal pulse method
illustrates that the surface functionalization of nanocubes plays a key role in
the uniform distribution of charge polarization within the polymer matrix. The
discharged energy density of the nanocomposite with 30 vol% BaTiO3 nanocubes is
∼44 × 10−3 J cm−3, which is almost six times higher than that of the neat polymer.
The facile processing, along with the superior mechanical and electrical properties
of the BaTiO3/PMMA–ABS nanocomposites make them suitable for implementation into
capacitive electrical energy storage devices.
article_processing_charge: No
article_type: original
author:
- first_name: Saman Salemizadeh
full_name: Parizi, Saman Salemizadeh
last_name: Parizi
- first_name: Gavin
full_name: Conley, Gavin
last_name: Conley
- first_name: Tommaso
full_name: Costanzo, Tommaso
id: D93824F4-D9BA-11E9-BB12-F207E6697425
last_name: Costanzo
orcid: 0000-0001-9732-3815
- first_name: Bob
full_name: Howell, Bob
last_name: Howell
- first_name: Axel
full_name: Mellinger, Axel
last_name: Mellinger
- first_name: Gabriel
full_name: Caruntu, Gabriel
last_name: Caruntu
citation:
ama: Parizi SS, Conley G, Costanzo T, Howell B, Mellinger A, Caruntu G. Fabrication
of barium titanate/acrylonitrile-butadiene styrene/poly(methyl methacrylate) nanocomposite
films for hybrid ferroelectric capacitors. RSC Advances. 2015;5(93):76356-76362.
doi:10.1039/c5ra11347d
apa: Parizi, S. S., Conley, G., Costanzo, T., Howell, B., Mellinger, A., & Caruntu,
G. (2015). Fabrication of barium titanate/acrylonitrile-butadiene styrene/poly(methyl
methacrylate) nanocomposite films for hybrid ferroelectric capacitors. RSC
Advances. RSC. https://doi.org/10.1039/c5ra11347d
chicago: Parizi, Saman Salemizadeh, Gavin Conley, Tommaso Costanzo, Bob Howell,
Axel Mellinger, and Gabriel Caruntu. “Fabrication of Barium Titanate/Acrylonitrile-Butadiene
Styrene/Poly(Methyl Methacrylate) Nanocomposite Films for Hybrid Ferroelectric
Capacitors.” RSC Advances. RSC, 2015. https://doi.org/10.1039/c5ra11347d.
ieee: S. S. Parizi, G. Conley, T. Costanzo, B. Howell, A. Mellinger, and G. Caruntu,
“Fabrication of barium titanate/acrylonitrile-butadiene styrene/poly(methyl methacrylate)
nanocomposite films for hybrid ferroelectric capacitors,” RSC Advances,
vol. 5, no. 93. RSC, pp. 76356–76362, 2015.
ista: Parizi SS, Conley G, Costanzo T, Howell B, Mellinger A, Caruntu G. 2015. Fabrication
of barium titanate/acrylonitrile-butadiene styrene/poly(methyl methacrylate) nanocomposite
films for hybrid ferroelectric capacitors. RSC Advances. 5(93), 76356–76362.
mla: Parizi, Saman Salemizadeh, et al. “Fabrication of Barium Titanate/Acrylonitrile-Butadiene
Styrene/Poly(Methyl Methacrylate) Nanocomposite Films for Hybrid Ferroelectric
Capacitors.” RSC Advances, vol. 5, no. 93, RSC, 2015, pp. 76356–62, doi:10.1039/c5ra11347d.
short: S.S. Parizi, G. Conley, T. Costanzo, B. Howell, A. Mellinger, G. Caruntu,
RSC Advances 5 (2015) 76356–76362.
date_created: 2020-02-05T14:17:26Z
date_published: 2015-09-01T00:00:00Z
date_updated: 2023-02-23T13:08:26Z
day: '01'
doi: 10.1039/c5ra11347d
extern: '1'
intvolume: ' 5'
issue: '93'
language:
- iso: eng
month: '09'
oa_version: Submitted Version
page: 76356-76362
publication: RSC Advances
publication_identifier:
issn:
- 2046-2069
publication_status: published
publisher: RSC
quality_controlled: '1'
status: public
title: Fabrication of barium titanate/acrylonitrile-butadiene styrene/poly(methyl
methacrylate) nanocomposite films for hybrid ferroelectric capacitors
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 5
year: '2015'
...