---
_id: '2779'
abstract:
- lang: eng
text: We consider a two-dimensional magnetic Schrödinger operator on a square lattice
with a spatially stationary random magnetic field. We prove Anderson localization
near the spectral edges. We use a new approach to establish a Wegner estimate
that does not rely on the monotonicity of the energy on the random parameters.
author:
- first_name: László
full_name: László Erdös
id: 4DBD5372-F248-11E8-B48F-1D18A9856A87
last_name: Erdös
orcid: 0000-0001-5366-9603
- first_name: David
full_name: Hasler, David G
last_name: Hasler
citation:
ama: Erdös L, Hasler D. Wegner estimate for random magnetic Laplacian on ℤ 2. Annales
Henri Poincare. 2012;13(8):1719-1731. doi:10.1007/s00023-012-0177-9
apa: Erdös, L., & Hasler, D. (2012). Wegner estimate for random magnetic Laplacian
on ℤ 2. Annales Henri Poincare. Birkhäuser. https://doi.org/10.1007/s00023-012-0177-9
chicago: Erdös, László, and David Hasler. “Wegner Estimate for Random Magnetic Laplacian
on ℤ 2.” Annales Henri Poincare. Birkhäuser, 2012. https://doi.org/10.1007/s00023-012-0177-9.
ieee: L. Erdös and D. Hasler, “Wegner estimate for random magnetic Laplacian on
ℤ 2,” Annales Henri Poincare, vol. 13, no. 8. Birkhäuser, pp. 1719–1731,
2012.
ista: Erdös L, Hasler D. 2012. Wegner estimate for random magnetic Laplacian on
ℤ 2. Annales Henri Poincare. 13(8), 1719–1731.
mla: Erdös, László, and David Hasler. “Wegner Estimate for Random Magnetic Laplacian
on ℤ 2.” Annales Henri Poincare, vol. 13, no. 8, Birkhäuser, 2012, pp.
1719–31, doi:10.1007/s00023-012-0177-9.
short: L. Erdös, D. Hasler, Annales Henri Poincare 13 (2012) 1719–1731.
date_created: 2018-12-11T11:59:33Z
date_published: 2012-12-01T00:00:00Z
date_updated: 2021-01-12T06:59:38Z
day: '01'
doi: 10.1007/s00023-012-0177-9
extern: 1
intvolume: ' 13'
issue: '8'
month: '12'
page: 1719 - 1731
publication: Annales Henri Poincare
publication_status: published
publisher: Birkhäuser
publist_id: '4111'
quality_controlled: 0
status: public
title: Wegner estimate for random magnetic Laplacian on ℤ 2
type: journal_article
volume: 13
year: '2012'
...
---
_id: '2802'
abstract:
- lang: eng
text: When a binary fluid demixes under a slow temperature ramp, nucleation, coarsening
and sedimentation of droplets lead to an oscillatory evolution of the phase-separating
system. The advection of the sedimenting droplets is found to be chaotic. The
flow is driven by density differences between two phases. Here, we show how image
processing can be combined with particle tracking to resolve droplet size and
velocity simultaneously. Droplets are used as tracer particles, and the sedimentation
velocity is determined. Taking these effects into account, droplets with radii
in the range of 4-40 μm are detected and tracked. Based on these data, we resolve
the oscillations in the droplet size distribution that are coupled to the convective
flow.
author:
- first_name: Tobias
full_name: Lapp, Tobias
last_name: Lapp
- first_name: Martin
full_name: Rohloff, Martin
last_name: Rohloff
- first_name: Jürgen
full_name: Vollmer, Jürgen T
last_name: Vollmer
- first_name: Björn
full_name: Björn Hof
id: 3A374330-F248-11E8-B48F-1D18A9856A87
last_name: Hof
orcid: 0000-0003-2057-2754
citation:
ama: Lapp T, Rohloff M, Vollmer J, Hof B. Particle tracking for polydisperse sedimenting
droplets in phase separation. Experiments in Fluids. 2012;52(5):1187-1200.
doi:10.1007/s00348-011-1243-7
apa: Lapp, T., Rohloff, M., Vollmer, J., & Hof, B. (2012). Particle tracking
for polydisperse sedimenting droplets in phase separation. Experiments in Fluids.
Springer. https://doi.org/10.1007/s00348-011-1243-7
chicago: Lapp, Tobias, Martin Rohloff, Jürgen Vollmer, and Björn Hof. “Particle
Tracking for Polydisperse Sedimenting Droplets in Phase Separation.” Experiments
in Fluids. Springer, 2012. https://doi.org/10.1007/s00348-011-1243-7.
ieee: T. Lapp, M. Rohloff, J. Vollmer, and B. Hof, “Particle tracking for polydisperse
sedimenting droplets in phase separation,” Experiments in Fluids, vol.
52, no. 5. Springer, pp. 1187–1200, 2012.
ista: Lapp T, Rohloff M, Vollmer J, Hof B. 2012. Particle tracking for polydisperse
sedimenting droplets in phase separation. Experiments in Fluids. 52(5), 1187–1200.
mla: Lapp, Tobias, et al. “Particle Tracking for Polydisperse Sedimenting Droplets
in Phase Separation.” Experiments in Fluids, vol. 52, no. 5, Springer,
2012, pp. 1187–200, doi:10.1007/s00348-011-1243-7.
short: T. Lapp, M. Rohloff, J. Vollmer, B. Hof, Experiments in Fluids 52 (2012)
1187–1200.
date_created: 2018-12-11T11:59:40Z
date_published: 2012-05-05T00:00:00Z
date_updated: 2021-01-12T06:59:49Z
day: '05'
doi: 10.1007/s00348-011-1243-7
extern: 1
intvolume: ' 52'
issue: '5'
month: '05'
page: 1187 - 1200
publication: Experiments in Fluids
publication_status: published
publisher: Springer
publist_id: '4087'
quality_controlled: 0
status: public
title: Particle tracking for polydisperse sedimenting droplets in phase separation
type: journal_article
volume: 52
year: '2012'
...
---
_id: '2803'
abstract:
- lang: eng
text: Recent numerical studies suggest that in pipe and related shear flows, the
region of phase space separating laminar from turbulent motion is organized by
a chaotic attractor, called an edge state, which mediates the transition process.
We here confirm the existence of the edge state in laboratory experiments. We
observe that it governs the dynamics during the decay of turbulence underlining
its potential relevance for turbulence control. In addition we unveil two unstable
traveling wave solutions underlying the experimental flow fields. This observation
corroborates earlier suggestions that unstable solutions organize turbulence and
its stability border.
author:
- first_name: Alberto
full_name: de Lózar, Alberto
last_name: De Lózar
- first_name: Fernando
full_name: Mellibovsky, Fernando
last_name: Mellibovsky
- first_name: Marc
full_name: Avila, Marc
last_name: Avila
- first_name: Björn
full_name: Björn Hof
id: 3A374330-F248-11E8-B48F-1D18A9856A87
last_name: Hof
orcid: 0000-0003-2057-2754
citation:
ama: De Lózar A, Mellibovsky F, Avila M, Hof B. Edge state in pipe flow experiments.
Physical Review Letters. 2012;108(21). doi:10.1103/PhysRevLett.108.214502
apa: De Lózar, A., Mellibovsky, F., Avila, M., & Hof, B. (2012). Edge state
in pipe flow experiments. Physical Review Letters. American Physical Society.
https://doi.org/10.1103/PhysRevLett.108.214502
chicago: De Lózar, Alberto, Fernando Mellibovsky, Marc Avila, and Björn Hof. “Edge
State in Pipe Flow Experiments.” Physical Review Letters. American Physical
Society, 2012. https://doi.org/10.1103/PhysRevLett.108.214502.
ieee: A. De Lózar, F. Mellibovsky, M. Avila, and B. Hof, “Edge state in pipe flow
experiments,” Physical Review Letters, vol. 108, no. 21. American Physical
Society, 2012.
ista: De Lózar A, Mellibovsky F, Avila M, Hof B. 2012. Edge state in pipe flow experiments.
Physical Review Letters. 108(21).
mla: De Lózar, Alberto, et al. “Edge State in Pipe Flow Experiments.” Physical
Review Letters, vol. 108, no. 21, American Physical Society, 2012, doi:10.1103/PhysRevLett.108.214502.
short: A. De Lózar, F. Mellibovsky, M. Avila, B. Hof, Physical Review Letters 108
(2012).
date_created: 2018-12-11T11:59:41Z
date_published: 2012-05-21T00:00:00Z
date_updated: 2021-01-12T06:59:49Z
day: '21'
doi: 10.1103/PhysRevLett.108.214502
extern: 1
intvolume: ' 108'
issue: '21'
month: '05'
publication: Physical Review Letters
publication_status: published
publisher: American Physical Society
publist_id: '4086'
quality_controlled: 0
status: public
title: Edge state in pipe flow experiments
type: journal_article
volume: 108
year: '2012'
...
---
_id: '2804'
abstract:
- lang: eng
text: The analysis of the size distribution of droplets condensing on a substrate
(breath figures) is a test ground for scaling theories. Here, we show that a faithful
description of these distributions must explicitly deal with the growth mechanisms
of the droplets. This finding establishes a gateway connecting nucleation and
growth of the smallest droplets on surfaces to gross features of the evolution
of the droplet size distribution
author:
- first_name: Johannes
full_name: Blaschke, Johannes
last_name: Blaschke
- first_name: Tobias
full_name: Lapp, Tobias
last_name: Lapp
- first_name: Björn
full_name: Björn Hof
id: 3A374330-F248-11E8-B48F-1D18A9856A87
last_name: Hof
orcid: 0000-0003-2057-2754
- first_name: Jürgen
full_name: Vollmer, Jürgen T
last_name: Vollmer
citation:
ama: 'Blaschke J, Lapp T, Hof B, Vollmer J. Breath figures: Nucleation, growth,
coalescence, and the size distribution of droplets. Physical Review Letters.
2012;109(6). doi:10.1103/PhysRevLett.109.068701'
apa: 'Blaschke, J., Lapp, T., Hof, B., & Vollmer, J. (2012). Breath figures:
Nucleation, growth, coalescence, and the size distribution of droplets. Physical
Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.109.068701'
chicago: 'Blaschke, Johannes, Tobias Lapp, Björn Hof, and Jürgen Vollmer. “Breath
Figures: Nucleation, Growth, Coalescence, and the Size Distribution of Droplets.”
Physical Review Letters. American Physical Society, 2012. https://doi.org/10.1103/PhysRevLett.109.068701.'
ieee: 'J. Blaschke, T. Lapp, B. Hof, and J. Vollmer, “Breath figures: Nucleation,
growth, coalescence, and the size distribution of droplets,” Physical Review
Letters, vol. 109, no. 6. American Physical Society, 2012.'
ista: 'Blaschke J, Lapp T, Hof B, Vollmer J. 2012. Breath figures: Nucleation, growth,
coalescence, and the size distribution of droplets. Physical Review Letters. 109(6).'
mla: 'Blaschke, Johannes, et al. “Breath Figures: Nucleation, Growth, Coalescence,
and the Size Distribution of Droplets.” Physical Review Letters, vol. 109,
no. 6, American Physical Society, 2012, doi:10.1103/PhysRevLett.109.068701.'
short: J. Blaschke, T. Lapp, B. Hof, J. Vollmer, Physical Review Letters 109 (2012).
date_created: 2018-12-11T11:59:41Z
date_published: 2012-08-10T00:00:00Z
date_updated: 2021-01-12T06:59:50Z
day: '10'
doi: 10.1103/PhysRevLett.109.068701
extern: 1
intvolume: ' 109'
issue: '6'
month: '08'
publication: Physical Review Letters
publication_status: published
publisher: American Physical Society
publist_id: '4085'
quality_controlled: 0
status: public
title: 'Breath figures: Nucleation, growth, coalescence, and the size distribution
of droplets'
type: journal_article
volume: 109
year: '2012'
...
---
_id: '2825'
abstract:
- lang: eng
text: 'We study the problem of maximum marginal prediction (MMP) in probabilistic
graphical models, a task that occurs, for example, as the Bayes optimal decision
rule under a Hamming loss. MMP is typically performed as a two-stage procedure:
one estimates each variable''s marginal probability and then forms a prediction
from the states of maximal probability. In this work we propose a simple yet effective
technique for accelerating MMP when inference is sampling-based: instead of the
above two-stage procedure we directly estimate the posterior probability of each
decision variable. This allows us to identify the point of time when we are sufficiently
certain about any individual decision. Whenever this is the case, we dynamically
prune the variables we are confident about from the underlying factor graph. Consequently,
at any time only samples of variables whose decision is still uncertain need to
be created. Experiments in two prototypical scenarios, multi-label classification
and image inpainting, show that adaptive sampling can drastically accelerate MMP
without sacrificing prediction accuracy.'
author:
- first_name: Christoph
full_name: Lampert, Christoph
id: 40C20FD2-F248-11E8-B48F-1D18A9856A87
last_name: Lampert
orcid: 0000-0001-8622-7887
citation:
ama: 'Lampert C. Dynamic pruning of factor graphs for maximum marginal prediction.
In: Vol 1. Neural Information Processing Systems; 2012:82-90.'
apa: 'Lampert, C. (2012). Dynamic pruning of factor graphs for maximum marginal
prediction (Vol. 1, pp. 82–90). Presented at the NIPS: Neural Information Processing
Systems, Lake Tahoe, NV, United States: Neural Information Processing Systems.'
chicago: Lampert, Christoph. “Dynamic Pruning of Factor Graphs for Maximum Marginal
Prediction,” 1:82–90. Neural Information Processing Systems, 2012.
ieee: 'C. Lampert, “Dynamic pruning of factor graphs for maximum marginal prediction,”
presented at the NIPS: Neural Information Processing Systems, Lake Tahoe, NV,
United States, 2012, vol. 1, pp. 82–90.'
ista: 'Lampert C. 2012. Dynamic pruning of factor graphs for maximum marginal prediction.
NIPS: Neural Information Processing Systems vol. 1, 82–90.'
mla: Lampert, Christoph. Dynamic Pruning of Factor Graphs for Maximum Marginal
Prediction. Vol. 1, Neural Information Processing Systems, 2012, pp. 82–90.
short: C. Lampert, in:, Neural Information Processing Systems, 2012, pp. 82–90.
conference:
end_date: 2012-12-06
location: Lake Tahoe, NV, United States
name: 'NIPS: Neural Information Processing Systems'
start_date: 2012-12-03
date_created: 2018-12-11T11:59:48Z
date_published: 2012-12-01T00:00:00Z
date_updated: 2021-01-12T06:59:59Z
day: '01'
department:
- _id: ChLa
intvolume: ' 1'
language:
- iso: eng
month: '12'
oa_version: None
page: 82 - 90
publication_status: published
publisher: Neural Information Processing Systems
publist_id: '3975'
quality_controlled: '1'
scopus_import: 1
status: public
title: Dynamic pruning of factor graphs for maximum marginal prediction
type: conference
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 1
year: '2012'
...