---
_id: '804'
abstract:
- lang: eng
text: Polysaccharides (carbohydrates) are key regulators of a large number of cell
biological processes. However, precise biochemical or genetic manipulation of
these often complex structures is laborious and hampers experimental structure–function
studies. Molecular Dynamics (MD) simulations provide a valuable alternative tool
to generate and test hypotheses on saccharide function. Yet, currently used MD
force fields often overestimate the aggregation propensity of polysaccharides,
affecting the usability of those simulations. Here we tested MARTINI, a popular
coarse-grained (CG) force field for biological macromolecules, for its ability
to accurately represent molecular forces between saccharides. To this end, we
calculated a thermodynamic solution property, the second virial coefficient of
the osmotic pressure (B22). Comparison with light scattering experiments revealed
a nonphysical aggregation of a prototypical polysaccharide in MARTINI, pointing
at an imbalance of the nonbonded solute–solute, solute–water, and water–water
interactions. This finding also applies to smaller oligosaccharides which were
all found to aggregate in simulations even at moderate concentrations, well below
their solubility limit. Finally, we explored the influence of the Lennard-Jones
(LJ) interaction between saccharide molecules and propose a simple scaling of
the LJ interaction strength that makes MARTINI more reliable for the simulation
of saccharides.
acknowledged_ssus:
- _id: ScienComp
acknowledgement: P.S.S. was supported by research fellowship 2811/1-1 from the German
Research Foundation (DFG), and M.S. was supported by EMBO Long Term Fellowship ALTF
187-2013 and Grant GC65-32 from the Interdisciplinary Centre for Mathematical and
Computational Modelling (ICM), University of Warsaw, Poland. The authors thank Antje
Potthast, Marek Cieplak, Tomasz Włodarski, and Damien Thompson for fruitful discussions
and the IST Austria Scientific Computing Facility for support.
article_processing_charge: No
author:
- first_name: Philipp S
full_name: Schmalhorst, Philipp S
id: 309D50DA-F248-11E8-B48F-1D18A9856A87
last_name: Schmalhorst
orcid: 0000-0002-5795-0133
- first_name: Felix
full_name: Deluweit, Felix
last_name: Deluweit
- first_name: Roger
full_name: Scherrers, Roger
last_name: Scherrers
- first_name: Carl-Philipp J
full_name: Heisenberg, Carl-Philipp J
id: 39427864-F248-11E8-B48F-1D18A9856A87
last_name: Heisenberg
orcid: 0000-0002-0912-4566
- first_name: Mateusz K
full_name: Sikora, Mateusz K
id: 2F74BCDE-F248-11E8-B48F-1D18A9856A87
last_name: Sikora
citation:
ama: Schmalhorst PS, Deluweit F, Scherrers R, Heisenberg C-PJ, Sikora MK. Overcoming
the limitations of the MARTINI force field in simulations of polysaccharides.
Journal of Chemical Theory and Computation. 2017;13(10):5039-5053. doi:10.1021/acs.jctc.7b00374
apa: Schmalhorst, P. S., Deluweit, F., Scherrers, R., Heisenberg, C.-P. J., &
Sikora, M. K. (2017). Overcoming the limitations of the MARTINI force field in
simulations of polysaccharides. Journal of Chemical Theory and Computation.
American Chemical Society. https://doi.org/10.1021/acs.jctc.7b00374
chicago: Schmalhorst, Philipp S, Felix Deluweit, Roger Scherrers, Carl-Philipp J
Heisenberg, and Mateusz K Sikora. “Overcoming the Limitations of the MARTINI Force
Field in Simulations of Polysaccharides.” Journal of Chemical Theory and Computation.
American Chemical Society, 2017. https://doi.org/10.1021/acs.jctc.7b00374.
ieee: P. S. Schmalhorst, F. Deluweit, R. Scherrers, C.-P. J. Heisenberg, and M.
K. Sikora, “Overcoming the limitations of the MARTINI force field in simulations
of polysaccharides,” Journal of Chemical Theory and Computation, vol. 13,
no. 10. American Chemical Society, pp. 5039–5053, 2017.
ista: Schmalhorst PS, Deluweit F, Scherrers R, Heisenberg C-PJ, Sikora MK. 2017.
Overcoming the limitations of the MARTINI force field in simulations of polysaccharides.
Journal of Chemical Theory and Computation. 13(10), 5039–5053.
mla: Schmalhorst, Philipp S., et al. “Overcoming the Limitations of the MARTINI
Force Field in Simulations of Polysaccharides.” Journal of Chemical Theory
and Computation, vol. 13, no. 10, American Chemical Society, 2017, pp. 5039–53,
doi:10.1021/acs.jctc.7b00374.
short: P.S. Schmalhorst, F. Deluweit, R. Scherrers, C.-P.J. Heisenberg, M.K. Sikora,
Journal of Chemical Theory and Computation 13 (2017) 5039–5053.
date_created: 2018-12-11T11:48:35Z
date_published: 2017-10-10T00:00:00Z
date_updated: 2023-09-27T10:58:45Z
day: '10'
department:
- _id: CaHe
doi: 10.1021/acs.jctc.7b00374
external_id:
isi:
- '000412965700036'
intvolume: ' 13'
isi: 1
issue: '10'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1704.03773
month: '10'
oa: 1
oa_version: Submitted Version
page: 5039 - 5053
publication: Journal of Chemical Theory and Computation
publication_identifier:
issn:
- '15499618'
publication_status: published
publisher: American Chemical Society
publist_id: '6847'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Overcoming the limitations of the MARTINI force field in simulations of polysaccharides
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 13
year: '2017'
...
---
_id: '805'
abstract:
- lang: eng
text: During corticogenesis, distinct classes of neurons are born from progenitor
cells located in the ventricular and subventricular zones, from where they migrate
towards the pial surface to assemble into highly organized layer-specific circuits.
However, the precise and coordinated transcriptional network activity defining
neuronal identity is still not understood. Here, we show that genetic depletion
of the basic helix-loop-helix (bHLH) transcription factor E2A splice variant E47
increased the number of Tbr1-positive deep layer and Satb2-positive upper layer
neurons at E14.5, while depletion of the alternatively spliced E12 variant did
not affect layer-specific neurogenesis. While ChIP-Seq identified a big overlap
for E12- and E47-specific binding sites in embryonic NSCs, including sites at
the cyclin-dependent kinase inhibitor (CDKI) Cdkn1c gene locus, RNA-Seq revealed
a unique transcriptional regulation by each splice variant. E47 activated the
expression of the CDKI Cdkn1c through binding to a distal enhancer. Finally, overexpression
of E47 in embryonic NSCs in vitro impaired neurite outgrowth and E47 overexpression
in vivo by in utero electroporation disturbed proper layer-specific neurogenesis
and upregulated p57(KIP2) expression. Overall, this study identified E2A target
genes in embryonic NSCs and demonstrates that E47 regulates neuronal differentiation
via p57(KIP2).
article_processing_charge: No
author:
- first_name: Sabrina
full_name: Pfurr, Sabrina
last_name: Pfurr
- first_name: Yu
full_name: Chu, Yu
last_name: Chu
- first_name: Christian
full_name: Bohrer, Christian
last_name: Bohrer
- first_name: Franziska
full_name: Greulich, Franziska
last_name: Greulich
- first_name: Robert J
full_name: Beattie, Robert J
id: 2E26DF60-F248-11E8-B48F-1D18A9856A87
last_name: Beattie
orcid: 0000-0002-8483-8753
- first_name: Könül
full_name: Mammadzada, Könül
last_name: Mammadzada
- first_name: Miriam
full_name: Hils, Miriam
last_name: Hils
- first_name: Sebastian
full_name: Arnold, Sebastian
last_name: Arnold
- first_name: Verdon
full_name: Taylor, Verdon
last_name: Taylor
- first_name: Kristina
full_name: Schachtrup, Kristina
last_name: Schachtrup
- first_name: N Henriette
full_name: Uhlenhaut, N Henriette
last_name: Uhlenhaut
- first_name: Christian
full_name: Schachtrup, Christian
last_name: Schachtrup
citation:
ama: Pfurr S, Chu Y, Bohrer C, et al. The E2A splice variant E47 regulates the differentiation
of projection neurons via p57(KIP2) during cortical development. Development.
2017;144:3917-3931. doi:10.1242/dev.145698
apa: Pfurr, S., Chu, Y., Bohrer, C., Greulich, F., Beattie, R. J., Mammadzada, K.,
… Schachtrup, C. (2017). The E2A splice variant E47 regulates the differentiation
of projection neurons via p57(KIP2) during cortical development. Development.
Company of Biologists. https://doi.org/10.1242/dev.145698
chicago: Pfurr, Sabrina, Yu Chu, Christian Bohrer, Franziska Greulich, Robert J
Beattie, Könül Mammadzada, Miriam Hils, et al. “The E2A Splice Variant E47 Regulates
the Differentiation of Projection Neurons via P57(KIP2) during Cortical Development.”
Development. Company of Biologists, 2017. https://doi.org/10.1242/dev.145698.
ieee: S. Pfurr et al., “The E2A splice variant E47 regulates the differentiation
of projection neurons via p57(KIP2) during cortical development,” Development,
vol. 144. Company of Biologists, pp. 3917–3931, 2017.
ista: Pfurr S, Chu Y, Bohrer C, Greulich F, Beattie RJ, Mammadzada K, Hils M, Arnold
S, Taylor V, Schachtrup K, Uhlenhaut NH, Schachtrup C. 2017. The E2A splice variant
E47 regulates the differentiation of projection neurons via p57(KIP2) during cortical
development. Development. 144, 3917–3931.
mla: Pfurr, Sabrina, et al. “The E2A Splice Variant E47 Regulates the Differentiation
of Projection Neurons via P57(KIP2) during Cortical Development.” Development,
vol. 144, Company of Biologists, 2017, pp. 3917–31, doi:10.1242/dev.145698.
short: S. Pfurr, Y. Chu, C. Bohrer, F. Greulich, R.J. Beattie, K. Mammadzada, M.
Hils, S. Arnold, V. Taylor, K. Schachtrup, N.H. Uhlenhaut, C. Schachtrup, Development
144 (2017) 3917–3931.
date_created: 2018-12-11T11:48:36Z
date_published: 2017-10-31T00:00:00Z
date_updated: 2023-09-26T16:20:09Z
day: '31'
department:
- _id: SiHi
doi: 10.1242/dev.145698
external_id:
isi:
- '000414025600007'
intvolume: ' 144'
isi: 1
language:
- iso: eng
month: '10'
oa_version: None
page: 3917 - 3931
publication: Development
publication_status: published
publisher: Company of Biologists
publist_id: '6846'
quality_controlled: '1'
scopus_import: '1'
status: public
title: The E2A splice variant E47 regulates the differentiation of projection neurons
via p57(KIP2) during cortical development
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 144
year: '2017'
...
---
_id: '807'
abstract:
- lang: eng
text: 'On January the 1st, 2016 a new agreement between 32 Austrian scientific libraries
and the publisher Springer took its effect: this deal covers accessing the licensed
content on the one hand, and publishing open access on the other hand. More than
1000 papers by Austrian authors were published open access at Springer in the
first year alone. The working group "Springer Compact Evaluierung" made
the data for these articles available via the platform OpenAPC and would like
to use this opportunity to give a short account of what this publishing agreement
actually entails and the working group intends to do.'
author:
- first_name: Magdalena
full_name: Andrae, Magdalena
last_name: Andrae
- first_name: Márton
full_name: Villányi, Márton
id: 3FFCCD3A-F248-11E8-B48F-1D18A9856A87
last_name: Villányi
orcid: 0000-0001-8126-0426
citation:
ama: Andrae M, Villányi M. Der Springer Compact-Deal – Ein erster Einblick in die
Evaluierung einer Offsetting-Vereinbarung. Mitteilungen der Vereinigung Österreichischer
Bibliothekarinnen und Bibliothekare. 2017;70(2):274-280. doi:10.31263/voebm.v70i2.1898
apa: Andrae, M., & Villányi, M. (2017). Der Springer Compact-Deal – Ein erster
Einblick in die Evaluierung einer Offsetting-Vereinbarung. Mitteilungen Der
Vereinigung Österreichischer Bibliothekarinnen Und Bibliothekare. VÖB. https://doi.org/10.31263/voebm.v70i2.1898
chicago: Andrae, Magdalena, and Márton Villányi. “Der Springer Compact-Deal – Ein
Erster Einblick in Die Evaluierung Einer Offsetting-Vereinbarung.” Mitteilungen
Der Vereinigung Österreichischer Bibliothekarinnen Und Bibliothekare. VÖB,
2017. https://doi.org/10.31263/voebm.v70i2.1898.
ieee: M. Andrae and M. Villányi, “Der Springer Compact-Deal – Ein erster Einblick
in die Evaluierung einer Offsetting-Vereinbarung,” Mitteilungen der Vereinigung
Österreichischer Bibliothekarinnen und Bibliothekare, vol. 70, no. 2. VÖB,
pp. 274–280, 2017.
ista: Andrae M, Villányi M. 2017. Der Springer Compact-Deal – Ein erster Einblick
in die Evaluierung einer Offsetting-Vereinbarung. Mitteilungen der Vereinigung
Österreichischer Bibliothekarinnen und Bibliothekare. 70(2), 274–280.
mla: Andrae, Magdalena, and Márton Villányi. “Der Springer Compact-Deal – Ein Erster
Einblick in Die Evaluierung Einer Offsetting-Vereinbarung.” Mitteilungen Der
Vereinigung Österreichischer Bibliothekarinnen Und Bibliothekare, vol. 70,
no. 2, VÖB, 2017, pp. 274–80, doi:10.31263/voebm.v70i2.1898.
short: M. Andrae, M. Villányi, Mitteilungen Der Vereinigung Österreichischer Bibliothekarinnen
Und Bibliothekare 70 (2017) 274–280.
date_created: 2018-12-11T11:48:36Z
date_published: 2017-08-01T00:00:00Z
date_updated: 2021-01-12T08:16:45Z
day: '01'
ddc:
- '020'
department:
- _id: E-Lib
doi: 10.31263/voebm.v70i2.1898
file:
- access_level: open_access
checksum: 558c18bcf5580d87dd371ec626d52075
content_type: application/pdf
creator: dernst
date_created: 2019-01-18T13:39:26Z
date_updated: 2020-07-14T12:48:09Z
file_id: '5851'
file_name: 2017_VOEB_Andrae.pdf
file_size: 125065
relation: main_file
file_date_updated: 2020-07-14T12:48:09Z
has_accepted_license: '1'
intvolume: ' 70'
issue: '2'
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
page: 274 - 280
popular_science: '1'
publication: Mitteilungen der Vereinigung Österreichischer Bibliothekarinnen und Bibliothekare
publication_identifier:
issn:
- '10222588'
publication_status: published
publisher: VÖB
publist_id: '6843'
scopus_import: 1
status: public
title: Der Springer Compact-Deal – Ein erster Einblick in die Evaluierung einer Offsetting-Vereinbarung
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: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 70
year: '2017'
...
---
_id: '818'
abstract:
- lang: eng
text: 'Antibiotics have diverse effects on bacteria, including massive changes in
bacterial gene expression. Whereas the gene expression changes under many antibiotics
have been measured, the temporal organization of these responses and their dependence
on the bacterial growth rate are unclear. As described in Chapter 1, we quantified
the temporal gene expression changes in the bacterium Escherichia coli in response
to the sudden exposure to antibiotics using a fluorescent reporter library and
a robotic system. Our data show temporally structured gene expression responses,
with response times for individual genes ranging from tens of minutes to several
hours. We observed that many stress response genes were activated in response
to antibiotics. As certain stress responses cross-protect bacteria from other
stressors, we then asked whether cellular responses to antibiotics have a similar
protective role in Chapter 2. Indeed, we found that the trimethoprim-induced acid
stress response protects bacteria from subsequent acid stress. We combined microfluidics
with time-lapse imaging to monitor survival, intracellular pH, and acid stress
response in single cells. This approach revealed that the variable expression
of the acid resistance operon gadBC strongly correlates with single-cell survival
time. Cells with higher gadBC expression following trimethoprim maintain higher
intracellular pH and survive the acid stress longer. Overall, we provide a way
to identify single-cell cross-protection between antibiotics and environmental
stressors from temporal gene expression data, and show how antibiotics can increase
bacterial fitness in changing environments. While gene expression changes to antibiotics
show a clear temporal structure at the population-level, it is unclear whether
this clear temporal order is followed by every single cell. Using dual-reporter
strains described in Chapter 3, we measured gene expression dynamics of promoter
pairs in the same cells using microfluidics and microscopy. Chapter 4 shows that
the oxidative stress response and the DNA stress response showed little timing
variability and a clear temporal order under the antibiotic nitrofurantoin. In
contrast, the acid stress response under trimethoprim ran independently from all
other activated response programs including the DNA stress response, which showed
particularly high timing variability in this stress condition. In summary, this
approach provides insight into the temporal organization of gene expression programs
at the single-cell level and suggests dependencies between response programs and
the underlying variability-introducing mechanisms. Altogether, this work advances
our understanding of the diverse effects that antibiotics have on bacteria. These
results were obtained by taking into account gene expression dynamics, which allowed
us to identify general principles, molecular mechanisms, and dependencies between
genes. Our findings may have implications for infectious disease treatments, and
microbial communities in the human body and in nature. '
acknowledgement: 'First of all, I would like to express great gratitude to my PhD
supervisor Tobias Bollenbach. Through his open and trusting attitude I had the freedom
to explore different scientific directions during this project, and follow the research
lines of my interest. I am thankful for constructive and often extensive discussions
and his support and commitment during the different stages of my PhD. I want to
thank my committee members, Călin Guet, Terry Hwa and Nassos Typas for their interest
and their valuable input to this project. Special thanks to Nassos for career guidance,
and for accepting me in his lab. A big thank you goes to the past, present and affiliated
members of the Bollenbach group: Guillaume Chevereau, Marjon de Vos, Marta Lukačišinová,
Veronika Bierbaum, Qi Qin, Marcin Zagórski, Martin Lukačišin, Andreas Angermayr,
Bor Kavčič, Julia Tischler, Dilay Ayhan, Jaroslav Ferenc, and Georg Rieckh. I enjoyed
working and discussing with you very much and I will miss our lengthy group meetings,
our inspiring journal clubs, and our common lunches. Special thanks to Bor for great
mental and professional support during the hard months of thesis writing, and to
Marta for very creative times during the beginning of our PhDs. May the ‘Bacterial
Survival Guide’ decorate the walls of IST forever! A great thanks to my friend and
collaborator Georg Rieckh for his enthusiasm and for getting so involved in these
projects, for his endurance and for his company throughout the years. Thanks to
the FriSBi crowd at IST Austria for interesting meetings and discussions. In particular
I want to thank Magdalena Steinrück, and Anna Andersson for inspiring exchange,
and enjoyable time together. Thanks to everybody who contributed to the cover for
Cell Systems: The constructive input from Tobias Bollenbach, Bor Kavčič, Georg Rieckh,
Marta Lukačišinová, and Sebastian Nozzi, and the professional implementation by
the graphic designer Martina Markus from the University of Cologne. Thanks to all
my office mates in the first floor Bertalanffy building throughout the years: for
ensuring a pleasant working atmosphere, and for your company! In general, I want
to thank all the people that make IST such a great environment, with the many possibilities
to shape our own social and research environment. I want to thank my family for
all kind of practical support during the years, and my second family in Argentina
for their enthusiasm. Thanks to my brother Bernhard and my sister Martina for being
great siblings, and to Helena and Valentin for the joy you brought to my life. My
deep gratitude goes to Sebastian Nozzi, for constant support, patience, love and
for believing in me. '
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Karin
full_name: Mitosch, Karin
id: 39B66846-F248-11E8-B48F-1D18A9856A87
last_name: Mitosch
citation:
ama: Mitosch K. Timing, variability and cross-protection in bacteria – insights
from dynamic gene expression responses to antibiotics. 2017. doi:10.15479/AT:ISTA:th_862
apa: Mitosch, K. (2017). Timing, variability and cross-protection in bacteria
– insights from dynamic gene expression responses to antibiotics. Institute
of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:th_862
chicago: Mitosch, Karin. “Timing, Variability and Cross-Protection in Bacteria –
Insights from Dynamic Gene Expression Responses to Antibiotics.” Institute of
Science and Technology Austria, 2017. https://doi.org/10.15479/AT:ISTA:th_862.
ieee: K. Mitosch, “Timing, variability and cross-protection in bacteria – insights
from dynamic gene expression responses to antibiotics,” Institute of Science and
Technology Austria, 2017.
ista: Mitosch K. 2017. Timing, variability and cross-protection in bacteria – insights
from dynamic gene expression responses to antibiotics. Institute of Science and
Technology Austria.
mla: Mitosch, Karin. Timing, Variability and Cross-Protection in Bacteria – Insights
from Dynamic Gene Expression Responses to Antibiotics. Institute of Science
and Technology Austria, 2017, doi:10.15479/AT:ISTA:th_862.
short: K. Mitosch, Timing, Variability and Cross-Protection in Bacteria – Insights
from Dynamic Gene Expression Responses to Antibiotics, Institute of Science and
Technology Austria, 2017.
date_created: 2018-12-11T11:48:40Z
date_published: 2017-09-27T00:00:00Z
date_updated: 2023-09-07T12:00:26Z
day: '27'
ddc:
- '571'
- '579'
degree_awarded: PhD
department:
- _id: ToBo
doi: 10.15479/AT:ISTA:th_862
file:
- access_level: closed
checksum: da3993c5f90f59a8e8623cc31ad501dd
content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
creator: dernst
date_created: 2019-04-05T08:48:51Z
date_updated: 2020-07-14T12:48:09Z
file_id: '6210'
file_name: Thesis_KarinMitosch.docx
file_size: 6331071
relation: source_file
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checksum: 24c3d9e51992f1b721f3df55aa13fcb8
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creator: dernst
date_created: 2019-04-05T08:48:51Z
date_updated: 2020-07-14T12:48:09Z
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relation: main_file
file_date_updated: 2020-07-14T12:48:09Z
has_accepted_license: '1'
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
page: '113'
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
publist_id: '6831'
pubrep_id: '862'
related_material:
record:
- id: '2001'
relation: part_of_dissertation
status: public
- id: '666'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Mark Tobias
full_name: Bollenbach, Mark Tobias
id: 3E6DB97A-F248-11E8-B48F-1D18A9856A87
last_name: Bollenbach
orcid: 0000-0003-4398-476X
title: Timing, variability and cross-protection in bacteria – insights from dynamic
gene expression responses to antibiotics
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: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2017'
...
---
_id: '819'
abstract:
- lang: eng
text: 'Contagious diseases must transmit from infectious to susceptible hosts in
order to reproduce. Whilst vectored pathogens can rely on intermediaries to find
new hosts for them, many infectious pathogens require close contact or direct
interaction between hosts for transmission. Hence, this means that conspecifics
are often the main source of infection for most animals and so, in theory, animals
should avoid conspecifics to reduce their risk of infection. Of course, in reality
animals must interact with one another, as a bare minimum, to mate. However, being
social provides many additional benefits and group living has become a taxonomically
diverse and widespread trait. How then do social animals overcome the issue of
increased disease? Over the last few decades, the social insects (ants, termites
and some bees and wasps) have become a model system for studying disease in social
animals. On paper, a social insect colony should be particularly susceptible to
disease, given that they often contain thousands of potential hosts that are closely
related and frequently interact, as well as exhibiting stable environmental conditions
that encourage microbial growth. Yet, disease outbreaks appear to be rare and
attempts to eradicate pest species using pathogens have failed time and again.
Evolutionary biologists investigating this observation have discovered that the
reduced disease susceptibility in social insects is, in part, due to collectively
performed disease defences of the workers. These defences act like a “social immune
system” for the colony, resulting in a per capita decrease in disease, termed
social immunity. Our understanding of social immunity, and its importance in relation
to the immunological defences of each insect, continues to grow, but there remain
many open questions. In this thesis I have studied disease defence in garden ants.
In the first data chapter, I use the invasive garden ant, Lasius neglectus, to
investigate how colonies mitigate lethal infections and prevent them from spreading
systemically. I find that ants have evolved ‘destructive disinfection’ – a behaviour
that uses endogenously produced acidic poison to kill diseased brood and to prevent
the pathogen from replicating. In the second experimental chapter, I continue
to study the use of poison in invasive garden ant colonies, finding that it is
sprayed prophylactically within the nest. However, this spraying has negative
effects on developing pupae when they have had their cocoons artificially removed.
Hence, I suggest that acidic nest sanitation may be maintaining larval cocoon
spinning in this species. In the next experimental chapter, I investigated how
colony founding black garden ant queens (Lasius niger) prevent disease when a
co-foundress dies. I show that ant queens prophylactically perform undertaking
behaviours, similar to those performed by the workers in mature nests. When a
co-foundress was infected, these undertaking behaviours improved the survival
of the healthy queen. In the final data chapter, I explored how immunocompetence
(measured as antifungal activity) changes as incipient black garden ant colonies
grow and mature, from the solitary queen phase to colonies with several hundred
workers. Queen and worker antifungal activity varied throughout this time period,
but despite social immunity, did not decrease as colonies matured. In addition
to the above data chapters, this thesis includes two co-authored reviews. In the
first, we examine the state of the art in the field of social immunity and how
it might develop in the future. In the second, we identify several challenges
and open questions in the study of disease defence in animals. We highlight how
social insects offer a unique model to tackle some of these problems, as disease
defence can be studied from the cell to the society. '
acknowledgement: "ERC FP7 programme (grant agreement no. 240371)\r\nI have been supremely
spoilt to work in a lab with such good resources and I must thank the wonderful
Cremer group technicians, Anna, Barbara, Eva and Florian, for all of their help
and keeping the lab up and running. You guys will probably be the most missed once
I realise just how much work you have been saving me! For the same reason, I must
say a big Dzi ę kuj ę Ci to Wonder Woman Wanda, for her tireless efforts feeding
my colonies and cranking out thousands of petri dishes and sugar tubes. Again, you
will be sorely missed now that I will have to take this task on myself. Of course,
I will be eternally indebted to Prof. Sylvia Cremer for taking me under her wing
and being a constant source of guidance and inspiration. You have given me the perfect
balance of independence and supervision. I cannot thank you enough for creating
such a great working environment and allowing me the freedom to follow my own research
questions. I have had so many exceptional opportunities – attending and presenting
at conferences all over the world, inviting me to write the ARE with you, going
to workshops in Panama and Switzerland, and even organising our own PhD course –
that I often think I must have had the best PhD in the world. You have taught me
so much and made me a scientist. I sincerely hope we get the chance to work together
again in the future. Thank you for everything. I must also thank my PhD Committee,
Daria Siekhaus and Jacobus “Koos” Boomsma, for being very supportive throughout
the duration of my PhD. "
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Christopher
full_name: Pull, Christopher
id: 3C7F4840-F248-11E8-B48F-1D18A9856A87
last_name: Pull
orcid: 0000-0003-1122-3982
citation:
ama: Pull C. Disease defence in garden ants. 2017. doi:10.15479/AT:ISTA:th_861
apa: Pull, C. (2017). Disease defence in garden ants. Institute of Science
and Technology Austria. https://doi.org/10.15479/AT:ISTA:th_861
chicago: Pull, Christopher. “Disease Defence in Garden Ants.” Institute of Science
and Technology Austria, 2017. https://doi.org/10.15479/AT:ISTA:th_861.
ieee: C. Pull, “Disease defence in garden ants,” Institute of Science and Technology
Austria, 2017.
ista: Pull C. 2017. Disease defence in garden ants. Institute of Science and Technology
Austria.
mla: Pull, Christopher. Disease Defence in Garden Ants. Institute of Science
and Technology Austria, 2017, doi:10.15479/AT:ISTA:th_861.
short: C. Pull, Disease Defence in Garden Ants, Institute of Science and Technology
Austria, 2017.
date_created: 2018-12-11T11:48:40Z
date_published: 2017-09-26T00:00:00Z
date_updated: 2023-09-28T11:31:32Z
day: '26'
ddc:
- '576'
- '577'
- '578'
- '579'
- '590'
- '592'
degree_awarded: PhD
department:
- _id: SyCr
doi: 10.15479/AT:ISTA:th_861
file:
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checksum: 4993cdd5382295758ecc3ecbd2a9aaff
content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
creator: dernst
date_created: 2019-04-05T07:53:04Z
date_updated: 2020-07-14T12:48:09Z
file_id: '6199'
file_name: 2017_Thesis_Pull.docx
file_size: 18580400
relation: source_file
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checksum: ee2e3ebb5b53c154c866f5b052b25153
content_type: application/pdf
creator: dernst
date_created: 2019-04-05T07:53:04Z
date_updated: 2020-07-14T12:48:09Z
file_id: '6200'
file_name: 2017_Thesis_Pull.pdf
file_size: 14400681
relation: main_file
file_date_updated: 2020-07-14T12:48:09Z
has_accepted_license: '1'
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
page: '122'
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
publist_id: '6830'
pubrep_id: '861'
related_material:
record:
- id: '616'
relation: part_of_dissertation
status: public
- id: '806'
relation: part_of_dissertation
status: public
- id: '734'
relation: part_of_dissertation
status: public
- id: '732'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Sylvia M
full_name: Cremer, Sylvia M
id: 2F64EC8C-F248-11E8-B48F-1D18A9856A87
last_name: Cremer
orcid: 0000-0002-2193-3868
title: Disease defence in garden ants
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: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2017'
...
---
_id: '1528'
abstract:
- lang: eng
text: 'We consider N×N Hermitian random matrices H consisting of blocks of size
M≥N6/7. The matrix elements are i.i.d. within the blocks, close to a Gaussian
in the four moment matching sense, but their distribution varies from block to
block to form a block-band structure, with an essential band width M. We show
that the entries of the Green’s function G(z)=(H−z)−1 satisfy the local semicircle
law with spectral parameter z=E+iη down to the real axis for any η≫N−1, using
a combination of the supersymmetry method inspired by Shcherbina (J Stat Phys
155(3): 466–499, 2014) and the Green’s function comparison strategy. Previous
estimates were valid only for η≫M−1. The new estimate also implies that the eigenvectors
in the middle of the spectrum are fully delocalized.'
acknowledgement: "Z. Bao was supported by ERC Advanced Grant RANMAT No. 338804; L.
Erdős was partially supported by ERC Advanced Grant RANMAT No. 338804.\r\nOpen access
funding provided by Institute of Science and Technology (IST Austria). The authors
are very grateful to the anonymous referees for careful reading and valuable comments,
which helped to improve the organization."
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Zhigang
full_name: Bao, Zhigang
id: 442E6A6C-F248-11E8-B48F-1D18A9856A87
last_name: Bao
orcid: 0000-0003-3036-1475
- first_name: László
full_name: Erdös, László
id: 4DBD5372-F248-11E8-B48F-1D18A9856A87
last_name: Erdös
orcid: 0000-0001-5366-9603
citation:
ama: Bao Z, Erdös L. Delocalization for a class of random block band matrices. Probability
Theory and Related Fields. 2017;167(3-4):673-776. doi:10.1007/s00440-015-0692-y
apa: Bao, Z., & Erdös, L. (2017). Delocalization for a class of random block
band matrices. Probability Theory and Related Fields. Springer. https://doi.org/10.1007/s00440-015-0692-y
chicago: Bao, Zhigang, and László Erdös. “Delocalization for a Class of Random Block
Band Matrices.” Probability Theory and Related Fields. Springer, 2017.
https://doi.org/10.1007/s00440-015-0692-y.
ieee: Z. Bao and L. Erdös, “Delocalization for a class of random block band matrices,”
Probability Theory and Related Fields, vol. 167, no. 3–4. Springer, pp.
673–776, 2017.
ista: Bao Z, Erdös L. 2017. Delocalization for a class of random block band matrices.
Probability Theory and Related Fields. 167(3–4), 673–776.
mla: Bao, Zhigang, and László Erdös. “Delocalization for a Class of Random Block
Band Matrices.” Probability Theory and Related Fields, vol. 167, no. 3–4,
Springer, 2017, pp. 673–776, doi:10.1007/s00440-015-0692-y.
short: Z. Bao, L. Erdös, Probability Theory and Related Fields 167 (2017) 673–776.
date_created: 2018-12-11T11:52:32Z
date_published: 2017-04-01T00:00:00Z
date_updated: 2023-09-20T09:42:12Z
day: '01'
ddc:
- '530'
department:
- _id: LaEr
doi: 10.1007/s00440-015-0692-y
ec_funded: 1
external_id:
isi:
- '000398842700004'
file:
- access_level: open_access
checksum: 67afa85ff1e220cbc1f9f477a828513c
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:08:05Z
date_updated: 2020-07-14T12:45:00Z
file_id: '4665'
file_name: IST-2016-489-v1+1_s00440-015-0692-y.pdf
file_size: 1615755
relation: main_file
file_date_updated: 2020-07-14T12:45:00Z
has_accepted_license: '1'
intvolume: ' 167'
isi: 1
issue: 3-4
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
page: 673 - 776
project:
- _id: 258DCDE6-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '338804'
name: Random matrices, universality and disordered quantum systems
publication: Probability Theory and Related Fields
publication_identifier:
issn:
- '01788051'
publication_status: published
publisher: Springer
publist_id: '5644'
pubrep_id: '489'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Delocalization for a class of random block band matrices
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: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 167
year: '2017'
...
---
_id: '2016'
abstract:
- lang: eng
text: The Ising model is one of the simplest and most famous models of interacting
systems. It was originally proposed to model ferromagnetic interactions in statistical
physics and is now widely used to model spatial processes in many areas such as
ecology, sociology, and genetics, usually without testing its goodness-of-fit.
Here, we propose an exact goodness-of-fit test for the finite-lattice Ising model.
The theory of Markov bases has been developed in algebraic statistics for exact
goodness-of-fit testing using a Monte Carlo approach. However, this beautiful
theory has fallen short of its promise for applications, because finding a Markov
basis is usually computationally intractable. We develop a Monte Carlo method
for exact goodness-of-fit testing for the Ising model which avoids computing a
Markov basis and also leads to a better connectivity of the Markov chain and hence
to a faster convergence. We show how this method can be applied to analyze the
spatial organization of receptors on the cell membrane.
article_processing_charge: No
arxiv: 1
author:
- first_name: Abraham
full_name: Martin Del Campo Sanchez, Abraham
last_name: Martin Del Campo Sanchez
- first_name: Sarah A
full_name: Cepeda Humerez, Sarah A
id: 3DEE19A4-F248-11E8-B48F-1D18A9856A87
last_name: Cepeda Humerez
- first_name: Caroline
full_name: Uhler, Caroline
id: 49ADD78E-F248-11E8-B48F-1D18A9856A87
last_name: Uhler
orcid: 0000-0002-7008-0216
citation:
ama: Martin Del Campo Sanchez A, Cepeda Humerez SA, Uhler C. Exact goodness-of-fit
testing for the Ising model. Scandinavian Journal of Statistics. 2017;44(2):285-306.
doi:10.1111/sjos.12251
apa: Martin Del Campo Sanchez, A., Cepeda Humerez, S. A., & Uhler, C. (2017).
Exact goodness-of-fit testing for the Ising model. Scandinavian Journal of
Statistics. Wiley-Blackwell. https://doi.org/10.1111/sjos.12251
chicago: Martin Del Campo Sanchez, Abraham, Sarah A Cepeda Humerez, and Caroline
Uhler. “Exact Goodness-of-Fit Testing for the Ising Model.” Scandinavian Journal
of Statistics. Wiley-Blackwell, 2017. https://doi.org/10.1111/sjos.12251.
ieee: A. Martin Del Campo Sanchez, S. A. Cepeda Humerez, and C. Uhler, “Exact goodness-of-fit
testing for the Ising model,” Scandinavian Journal of Statistics, vol.
44, no. 2. Wiley-Blackwell, pp. 285–306, 2017.
ista: Martin Del Campo Sanchez A, Cepeda Humerez SA, Uhler C. 2017. Exact goodness-of-fit
testing for the Ising model. Scandinavian Journal of Statistics. 44(2), 285–306.
mla: Martin Del Campo Sanchez, Abraham, et al. “Exact Goodness-of-Fit Testing for
the Ising Model.” Scandinavian Journal of Statistics, vol. 44, no. 2, Wiley-Blackwell,
2017, pp. 285–306, doi:10.1111/sjos.12251.
short: A. Martin Del Campo Sanchez, S.A. Cepeda Humerez, C. Uhler, Scandinavian
Journal of Statistics 44 (2017) 285–306.
date_created: 2018-12-11T11:55:13Z
date_published: 2017-06-01T00:00:00Z
date_updated: 2023-09-19T15:13:27Z
day: '01'
department:
- _id: GaTk
doi: 10.1111/sjos.12251
external_id:
arxiv:
- '1410.1242'
isi:
- '000400985000001'
intvolume: ' 44'
isi: 1
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://arxiv.org/abs/1410.1242
month: '06'
oa: 1
oa_version: Preprint
page: 285 - 306
publication: Scandinavian Journal of Statistics
publication_identifier:
issn:
- '03036898'
publication_status: published
publisher: Wiley-Blackwell
publist_id: '5060'
quality_controlled: '1'
related_material:
record:
- id: '6473'
relation: part_of_dissertation
status: public
scopus_import: '1'
status: public
title: Exact goodness-of-fit testing for the Ising model
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 44
year: '2017'
...
---
_id: '202'
abstract:
- lang: eng
text: 'Restriction-modification (RM) represents the simplest and possibly the most
widespread mechanism of self/non-self discrimination in nature. In order to provide
bacteria with immunity against bacteriophages and other parasitic genetic elements,
RM systems rely on a balance between two enzymes: the restriction enzyme, which
cleaves non-self DNA at specific restriction sites, and the modification enzyme,
which tags the host’s DNA as self and thus protects it from cleavage. In this
thesis, I use population and single-cell level experiments in combination with
mathematical modeling to study different aspects of the interplay between RM systems,
bacteria and bacteriophages. First, I analyze how mutations in phage restriction
sites affect the probability of phage escape – an inherently stochastic process,
during which phages accidently get modified instead of restricted. Next, I use
single-cell experiments to show that RM systems can, with a low probability, attack
the genome of their bacterial host and that this primitive form of autoimmunity
leads to a tradeoff between the evolutionary cost and benefit of RM systems. Finally,
I investigate the nature of interactions between bacteria, RM systems and temperate
bacteriophages to find that, as a consequence of phage escape and its impact on
population dynamics, RM systems can promote acquisition of symbiotic bacteriophages,
rather than limit it. The results presented here uncover new fundamental biological
properties of RM systems and highlight their importance in the ecology and evolution
of bacteria, bacteriophages and their interactions.'
acknowledgement: "During my PhD studies, I received help from many people, all of
which unfortunately cannot be listed here. I thank them deeply and hope that I never
made them regret their kindness.\r\nI would like to express my deepest gratitude
to Călin Guet, who went far beyond his responsibilities as an advisor and was to
me also a great mentor and a friend. Călin never questioned my potential or lacked
compassion and I cannot thank him enough for cultivating in me an independent scientist.
I was amazed by his ability to recognize the most fascinating scientific problems
in objects of study that others would find mundane. I hope I adopted at least a
fraction of this ability.\r\nI will be forever grateful to Bruce Levin for all his
support and especially for giving me the best possible example of how one can practice
excellent science with humor and style. Working with Bruce was a true privilege.\r\nI
thank Jonathan Bollback and Gašper Tkačik for serving in my PhD committee and the
Austrian Academy of Science for funding my PhD research via the DOC fellowship.\r\nI
thank all our lab members: Tobias Bergmiller for his guidance, especially in the
first years of my research, and for being a good friend throughout; Remy Chait for
staying in the lab at unreasonable hours and for the good laughs at bad jokes we
shared; Anna Staron for supportively listening to my whines whenever I had to run
a gel; Magdalena Steinrück for her pioneering work in the lab; Kathrin Tomasek for
keeping the entropic forces in check and for her FACS virtuosity; Isabella Tomanek
for always being nice to me, no matter how much bench space I took from her.\r\nI
thank all my collaborators: Reiko Okura and Yuichi Wakamoto for performing and analyzing
the microfluidic experiments; Long Qian and Edo Kussell for their bioinformatics
analysis; Dominik Refardt for the λ kan phage; Moritz for his help with the mathematical
modeling. I thank Fabienne Jesse for her tireless editorial work on all our manuscripts.\r\nFinally,
I would like to thank my family and especially my wife Edita, who sacrificed a lot
so that I can pursue my goals and dreams.\r\n"
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Maros
full_name: Pleska, Maros
id: 4569785E-F248-11E8-B48F-1D18A9856A87
last_name: Pleska
orcid: 0000-0001-7460-7479
citation:
ama: Pleska M. Biology of restriction-modification systems at the single-cell and
population level. 2017. doi:10.15479/AT:ISTA:th_916
apa: Pleska, M. (2017). Biology of restriction-modification systems at the single-cell
and population level. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:th_916
chicago: Pleska, Maros. “Biology of Restriction-Modification Systems at the Single-Cell
and Population Level.” Institute of Science and Technology Austria, 2017. https://doi.org/10.15479/AT:ISTA:th_916.
ieee: M. Pleska, “Biology of restriction-modification systems at the single-cell
and population level,” Institute of Science and Technology Austria, 2017.
ista: Pleska M. 2017. Biology of restriction-modification systems at the single-cell
and population level. Institute of Science and Technology Austria.
mla: Pleska, Maros. Biology of Restriction-Modification Systems at the Single-Cell
and Population Level. Institute of Science and Technology Austria, 2017, doi:10.15479/AT:ISTA:th_916.
short: M. Pleska, Biology of Restriction-Modification Systems at the Single-Cell
and Population Level, Institute of Science and Technology Austria, 2017.
date_created: 2018-12-11T11:45:10Z
date_published: 2017-10-01T00:00:00Z
date_updated: 2023-09-15T12:04:56Z
day: '01'
ddc:
- '576'
- '579'
degree_awarded: PhD
department:
- _id: CaGu
doi: 10.15479/AT:ISTA:th_916
file:
- access_level: open_access
checksum: 33cfb59674e91f82e3738396d3fb3776
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:08:48Z
date_updated: 2020-07-14T12:45:24Z
file_id: '4710'
file_name: IST-2018-916-v1+3_2017_Pleska_Maros_Thesis.pdf
file_size: 18569590
relation: main_file
- access_level: closed
checksum: dcc239968decb233e7f98cf1083d8c26
content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
creator: dernst
date_created: 2019-04-05T08:33:14Z
date_updated: 2020-07-14T12:45:24Z
file_id: '6204'
file_name: 2017_Pleska_Maros_Thesis.docx
file_size: 2801649
relation: source_file
file_date_updated: 2020-07-14T12:45:24Z
has_accepted_license: '1'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
page: '126'
project:
- _id: 251D65D8-B435-11E9-9278-68D0E5697425
grant_number: '24210'
name: Effects of Stochasticity on the Function of Restriction-Modi cation Systems
at the Single-Cell Level (DOC Fellowship)
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
publist_id: '7711'
pubrep_id: '916'
related_material:
record:
- id: '1243'
relation: part_of_dissertation
status: public
- id: '561'
relation: part_of_dissertation
status: public
- id: '457'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Calin C
full_name: Guet, Calin C
id: 47F8433E-F248-11E8-B48F-1D18A9856A87
last_name: Guet
orcid: 0000-0001-6220-2052
title: Biology of restriction-modification systems at the single-cell and population
level
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: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2017'
...
---
_id: '1336'
abstract:
- lang: eng
text: Evolutionary algorithms (EAs) form a popular optimisation paradigm inspired
by natural evolution. In recent years the field of evolutionary computation has
developed a rigorous analytical theory to analyse the runtimes of EAs on many
illustrative problems. Here we apply this theory to a simple model of natural
evolution. In the Strong Selection Weak Mutation (SSWM) evolutionary regime the
time between occurrences of new mutations is much longer than the time it takes
for a mutated genotype to take over the population. In this situation, the population
only contains copies of one genotype and evolution can be modelled as a stochastic
process evolving one genotype by means of mutation and selection between the resident
and the mutated genotype. The probability of accepting the mutated genotype then
depends on the change in fitness. We study this process, SSWM, from an algorithmic
perspective, quantifying its expected optimisation time for various parameters
and investigating differences to a similar evolutionary algorithm, the well-known
(1+1) EA. We show that SSWM can have a moderate advantage over the (1+1) EA at
crossing fitness valleys and study an example where SSWM outperforms the (1+1)
EA by taking advantage of information on the fitness gradient.
article_processing_charge: No
author:
- first_name: Tiago
full_name: Paixao, Tiago
id: 2C5658E6-F248-11E8-B48F-1D18A9856A87
last_name: Paixao
orcid: 0000-0003-2361-3953
- first_name: Jorge
full_name: Pérez Heredia, Jorge
last_name: Pérez Heredia
- first_name: Dirk
full_name: Sudholt, Dirk
last_name: Sudholt
- first_name: Barbora
full_name: Trubenova, Barbora
id: 42302D54-F248-11E8-B48F-1D18A9856A87
last_name: Trubenova
orcid: 0000-0002-6873-2967
citation:
ama: Paixao T, Pérez Heredia J, Sudholt D, Trubenova B. Towards a runtime comparison
of natural and artificial evolution. Algorithmica. 2017;78(2):681-713.
doi:10.1007/s00453-016-0212-1
apa: Paixao, T., Pérez Heredia, J., Sudholt, D., & Trubenova, B. (2017). Towards
a runtime comparison of natural and artificial evolution. Algorithmica.
Springer. https://doi.org/10.1007/s00453-016-0212-1
chicago: Paixao, Tiago, Jorge Pérez Heredia, Dirk Sudholt, and Barbora Trubenova.
“Towards a Runtime Comparison of Natural and Artificial Evolution.” Algorithmica.
Springer, 2017. https://doi.org/10.1007/s00453-016-0212-1.
ieee: T. Paixao, J. Pérez Heredia, D. Sudholt, and B. Trubenova, “Towards a runtime
comparison of natural and artificial evolution,” Algorithmica, vol. 78,
no. 2. Springer, pp. 681–713, 2017.
ista: Paixao T, Pérez Heredia J, Sudholt D, Trubenova B. 2017. Towards a runtime
comparison of natural and artificial evolution. Algorithmica. 78(2), 681–713.
mla: Paixao, Tiago, et al. “Towards a Runtime Comparison of Natural and Artificial
Evolution.” Algorithmica, vol. 78, no. 2, Springer, 2017, pp. 681–713,
doi:10.1007/s00453-016-0212-1.
short: T. Paixao, J. Pérez Heredia, D. Sudholt, B. Trubenova, Algorithmica 78 (2017)
681–713.
date_created: 2018-12-11T11:51:27Z
date_published: 2017-06-01T00:00:00Z
date_updated: 2023-09-20T11:14:42Z
day: '01'
ddc:
- '576'
department:
- _id: NiBa
- _id: CaGu
doi: 10.1007/s00453-016-0212-1
ec_funded: 1
external_id:
isi:
- '000400379500013'
file:
- access_level: open_access
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content_type: application/pdf
creator: system
date_created: 2018-12-12T10:10:19Z
date_updated: 2020-07-14T12:44:44Z
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file_size: 710206
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intvolume: ' 78'
isi: 1
issue: '2'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
page: 681 - 713
project:
- _id: 25B1EC9E-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '618091'
name: Speed of Adaptation in Population Genetics and Evolutionary Computation
publication: Algorithmica
publication_identifier:
issn:
- '01784617'
publication_status: published
publisher: Springer
publist_id: '5931'
pubrep_id: '658'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Towards a runtime comparison of natural and artificial evolution
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: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 78
year: '2017'
...
---
_id: '1337'
abstract:
- lang: eng
text: We consider the local eigenvalue distribution of large self-adjoint N×N random
matrices H=H∗ with centered independent entries. In contrast to previous works
the matrix of variances sij=\mathbbmE|hij|2 is not assumed to be stochastic. Hence
the density of states is not the Wigner semicircle law. Its possible shapes are
described in the companion paper (Ajanki et al. in Quadratic Vector Equations
on the Complex Upper Half Plane. arXiv:1506.05095). We show that as N grows, the
resolvent, G(z)=(H−z)−1, converges to a diagonal matrix, diag(m(z)), where m(z)=(m1(z),…,mN(z))
solves the vector equation −1/mi(z)=z+∑jsijmj(z) that has been analyzed in Ajanki
et al. (Quadratic Vector Equations on the Complex Upper Half Plane. arXiv:1506.05095).
We prove a local law down to the smallest spectral resolution scale, and bulk
universality for both real symmetric and complex hermitian symmetry classes.
acknowledgement: 'Open access funding provided by Institute of Science and Technology
(IST Austria). '
article_processing_charge: Yes (via OA deal)
author:
- first_name: Oskari H
full_name: Ajanki, Oskari H
id: 36F2FB7E-F248-11E8-B48F-1D18A9856A87
last_name: Ajanki
- first_name: László
full_name: Erdös, László
id: 4DBD5372-F248-11E8-B48F-1D18A9856A87
last_name: Erdös
orcid: 0000-0001-5366-9603
- first_name: Torben H
full_name: Krüger, Torben H
id: 3020C786-F248-11E8-B48F-1D18A9856A87
last_name: Krüger
orcid: 0000-0002-4821-3297
citation:
ama: Ajanki OH, Erdös L, Krüger TH. Universality for general Wigner-type matrices.
Probability Theory and Related Fields. 2017;169(3-4):667-727. doi:10.1007/s00440-016-0740-2
apa: Ajanki, O. H., Erdös, L., & Krüger, T. H. (2017). Universality for general
Wigner-type matrices. Probability Theory and Related Fields. Springer.
https://doi.org/10.1007/s00440-016-0740-2
chicago: Ajanki, Oskari H, László Erdös, and Torben H Krüger. “Universality for
General Wigner-Type Matrices.” Probability Theory and Related Fields. Springer,
2017. https://doi.org/10.1007/s00440-016-0740-2.
ieee: O. H. Ajanki, L. Erdös, and T. H. Krüger, “Universality for general Wigner-type
matrices,” Probability Theory and Related Fields, vol. 169, no. 3–4. Springer,
pp. 667–727, 2017.
ista: Ajanki OH, Erdös L, Krüger TH. 2017. Universality for general Wigner-type
matrices. Probability Theory and Related Fields. 169(3–4), 667–727.
mla: Ajanki, Oskari H., et al. “Universality for General Wigner-Type Matrices.”
Probability Theory and Related Fields, vol. 169, no. 3–4, Springer, 2017,
pp. 667–727, doi:10.1007/s00440-016-0740-2.
short: O.H. Ajanki, L. Erdös, T.H. Krüger, Probability Theory and Related Fields
169 (2017) 667–727.
date_created: 2018-12-11T11:51:27Z
date_published: 2017-12-01T00:00:00Z
date_updated: 2023-09-20T11:14:17Z
day: '01'
ddc:
- '510'
- '530'
department:
- _id: LaEr
doi: 10.1007/s00440-016-0740-2
ec_funded: 1
external_id:
isi:
- '000414358400002'
file:
- access_level: open_access
checksum: 29f5a72c3f91e408aeb9e78344973803
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:08:25Z
date_updated: 2020-07-14T12:44:44Z
file_id: '4686'
file_name: IST-2017-657-v1+2_s00440-016-0740-2.pdf
file_size: 988843
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has_accepted_license: '1'
intvolume: ' 169'
isi: 1
issue: 3-4
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
page: 667 - 727
project:
- _id: 258DCDE6-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '338804'
name: Random matrices, universality and disordered quantum systems
- _id: B67AFEDC-15C9-11EA-A837-991A96BB2854
name: IST Austria Open Access Fund
publication: Probability Theory and Related Fields
publication_identifier:
issn:
- '01788051'
publication_status: published
publisher: Springer
publist_id: '5930'
pubrep_id: '657'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Universality for general Wigner-type matrices
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: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 169
year: '2017'
...
---
_id: '1338'
abstract:
- lang: eng
text: We present a computer-aided programming approach to concurrency. The approach
allows programmers to program assuming a friendly, non-preemptive scheduler, and
our synthesis procedure inserts synchronization to ensure that the final program
works even with a preemptive scheduler. The correctness specification is implicit,
inferred from the non-preemptive behavior. Let us consider sequences of calls
that the program makes to an external interface. The specification requires that
any such sequence produced under a preemptive scheduler should be included in
the set of sequences produced under a non-preemptive scheduler. We guarantee that
our synthesis does not introduce deadlocks and that the synchronization inserted
is optimal w.r.t. a given objective function. The solution is based on a finitary
abstraction, an algorithm for bounded language inclusion modulo an independence
relation, and generation of a set of global constraints over synchronization placements.
Each model of the global constraints set corresponds to a correctness-ensuring
synchronization placement. The placement that is optimal w.r.t. the given objective
function is chosen as the synchronization solution. We apply the approach to device-driver
programming, where the driver threads call the software interface of the device
and the API provided by the operating system. Our experiments demonstrate that
our synthesis method is precise and efficient. The implicit specification helped
us find one concurrency bug previously missed when model-checking using an explicit,
user-provided specification. We implemented objective functions for coarse-grained
and fine-grained locking and observed that different synchronization placements
are produced for our experiments, favoring a minimal number of synchronization
operations or maximum concurrency, respectively.
article_processing_charge: No
author:
- first_name: Pavol
full_name: Cerny, Pavol
id: 4DCBEFFE-F248-11E8-B48F-1D18A9856A87
last_name: Cerny
- first_name: Edmund
full_name: Clarke, Edmund
last_name: Clarke
- 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: Leonid
full_name: Ryzhyk, Leonid
last_name: Ryzhyk
- 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: Cerny P, Clarke E, Henzinger TA, et al. From non-preemptive to preemptive scheduling
using synchronization synthesis. Formal Methods in System Design. 2017;50(2-3):97-139.
doi:10.1007/s10703-016-0256-5
apa: Cerny, P., Clarke, E., Henzinger, T. A., Radhakrishna, A., Ryzhyk, L., Samanta,
R., & Tarrach, T. (2017). From non-preemptive to preemptive scheduling using
synchronization synthesis. Formal Methods in System Design. Springer. https://doi.org/10.1007/s10703-016-0256-5
chicago: Cerny, Pavol, Edmund Clarke, Thomas A Henzinger, Arjun Radhakrishna, Leonid
Ryzhyk, Roopsha Samanta, and Thorsten Tarrach. “From Non-Preemptive to Preemptive
Scheduling Using Synchronization Synthesis.” Formal Methods in System Design.
Springer, 2017. https://doi.org/10.1007/s10703-016-0256-5.
ieee: P. Cerny et al., “From non-preemptive to preemptive scheduling using
synchronization synthesis,” Formal Methods in System Design, vol. 50, no.
2–3. Springer, pp. 97–139, 2017.
ista: Cerny P, Clarke E, Henzinger TA, Radhakrishna A, Ryzhyk L, Samanta R, Tarrach
T. 2017. From non-preemptive to preemptive scheduling using synchronization synthesis.
Formal Methods in System Design. 50(2–3), 97–139.
mla: Cerny, Pavol, et al. “From Non-Preemptive to Preemptive Scheduling Using Synchronization
Synthesis.” Formal Methods in System Design, vol. 50, no. 2–3, Springer,
2017, pp. 97–139, doi:10.1007/s10703-016-0256-5.
short: P. Cerny, E. Clarke, T.A. Henzinger, A. Radhakrishna, L. Ryzhyk, R. Samanta,
T. Tarrach, Formal Methods in System Design 50 (2017) 97–139.
date_created: 2018-12-11T11:51:27Z
date_published: 2017-06-01T00:00:00Z
date_updated: 2023-09-20T11:13:51Z
day: '01'
ddc:
- '000'
department:
- _id: ToHe
doi: 10.1007/s10703-016-0256-5
ec_funded: 1
external_id:
isi:
- '000399888900001'
file:
- access_level: open_access
checksum: 1163dfd997e8212c789525d4178b1653
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:13:05Z
date_updated: 2020-07-14T12:44:44Z
file_id: '4985'
file_name: IST-2016-656-v1+1_s10703-016-0256-5.pdf
file_size: 1416170
relation: main_file
file_date_updated: 2020-07-14T12:44:44Z
has_accepted_license: '1'
intvolume: ' 50'
isi: 1
issue: 2-3
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
page: 97 - 139
project:
- _id: 25EE3708-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '267989'
name: Quantitative Reactive Modeling
- _id: 25832EC2-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: S 11407_N23
name: Rigorous Systems Engineering
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: Z211
name: The Wittgenstein Prize
- _id: B67AFEDC-15C9-11EA-A837-991A96BB2854
name: IST Austria Open Access Fund
publication: Formal Methods in System Design
publication_status: published
publisher: Springer
publist_id: '5929'
pubrep_id: '656'
quality_controlled: '1'
related_material:
record:
- id: '1729'
relation: earlier_version
status: public
scopus_import: '1'
status: public
title: From non-preemptive to preemptive scheduling using synchronization synthesis
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: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 50
year: '2017'
...
---
_id: '1351'
abstract:
- lang: eng
text: The behaviour of gene regulatory networks (GRNs) is typically analysed using
simulation-based statistical testing-like methods. In this paper, we demonstrate
that we can replace this approach by a formal verification-like method that gives
higher assurance and scalability. We focus on Wagner’s weighted GRN model with
varying weights, which is used in evolutionary biology. In the model, weight parameters
represent the gene interaction strength that may change due to genetic mutations.
For a property of interest, we synthesise the constraints over the parameter space
that represent the set of GRNs satisfying the property. We experimentally show
that our parameter synthesis procedure computes the mutational robustness of GRNs—an
important problem of interest in evolutionary biology—more efficiently than the
classical simulation method. We specify the property in linear temporal logic.
We employ symbolic bounded model checking and SMT solving to compute the space
of GRNs that satisfy the property, which amounts to synthesizing a set of linear
constraints on the weights.
article_processing_charge: No
author:
- first_name: Mirco
full_name: Giacobbe, Mirco
id: 3444EA5E-F248-11E8-B48F-1D18A9856A87
last_name: Giacobbe
orcid: 0000-0001-8180-0904
- first_name: Calin C
full_name: Guet, Calin C
id: 47F8433E-F248-11E8-B48F-1D18A9856A87
last_name: Guet
orcid: 0000-0001-6220-2052
- 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: Tiago
full_name: Paixao, Tiago
id: 2C5658E6-F248-11E8-B48F-1D18A9856A87
last_name: Paixao
orcid: 0000-0003-2361-3953
- first_name: Tatjana
full_name: Petrov, Tatjana
id: 3D5811FC-F248-11E8-B48F-1D18A9856A87
last_name: Petrov
orcid: 0000-0002-9041-0905
citation:
ama: Giacobbe M, Guet CC, Gupta A, Henzinger TA, Paixao T, Petrov T. Model checking
the evolution of gene regulatory networks. Acta Informatica. 2017;54(8):765-787.
doi:10.1007/s00236-016-0278-x
apa: Giacobbe, M., Guet, C. C., Gupta, A., Henzinger, T. A., Paixao, T., & Petrov,
T. (2017). Model checking the evolution of gene regulatory networks. Acta Informatica.
Springer. https://doi.org/10.1007/s00236-016-0278-x
chicago: Giacobbe, Mirco, Calin C Guet, Ashutosh Gupta, Thomas A Henzinger, Tiago
Paixao, and Tatjana Petrov. “Model Checking the Evolution of Gene Regulatory Networks.”
Acta Informatica. Springer, 2017. https://doi.org/10.1007/s00236-016-0278-x.
ieee: M. Giacobbe, C. C. Guet, A. Gupta, T. A. Henzinger, T. Paixao, and T. Petrov,
“Model checking the evolution of gene regulatory networks,” Acta Informatica,
vol. 54, no. 8. Springer, pp. 765–787, 2017.
ista: Giacobbe M, Guet CC, Gupta A, Henzinger TA, Paixao T, Petrov T. 2017. Model
checking the evolution of gene regulatory networks. Acta Informatica. 54(8), 765–787.
mla: Giacobbe, Mirco, et al. “Model Checking the Evolution of Gene Regulatory Networks.”
Acta Informatica, vol. 54, no. 8, Springer, 2017, pp. 765–87, doi:10.1007/s00236-016-0278-x.
short: M. Giacobbe, C.C. Guet, A. Gupta, T.A. Henzinger, T. Paixao, T. Petrov, Acta
Informatica 54 (2017) 765–787.
date_created: 2018-12-11T11:51:32Z
date_published: 2017-12-01T00:00:00Z
date_updated: 2025-05-28T11:57:04Z
day: '01'
ddc:
- '006'
- '576'
department:
- _id: ToHe
- _id: CaGu
- _id: NiBa
doi: 10.1007/s00236-016-0278-x
ec_funded: 1
external_id:
isi:
- '000414343200003'
file:
- access_level: open_access
checksum: 4e661d9135d7f8c342e8e258dee76f3e
content_type: application/pdf
creator: dernst
date_created: 2019-01-17T15:57:29Z
date_updated: 2020-07-14T12:44:46Z
file_id: '5841'
file_name: 2017_ActaInformatica_Giacobbe.pdf
file_size: 755241
relation: main_file
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has_accepted_license: '1'
intvolume: ' 54'
isi: 1
issue: '8'
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
page: 765 - 787
project:
- _id: 25EE3708-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '267989'
name: Quantitative Reactive Modeling
- _id: 25832EC2-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: S 11407_N23
name: Rigorous Systems Engineering
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: Z211
name: The Wittgenstein Prize
- _id: 25B1EC9E-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '618091'
name: Speed of Adaptation in Population Genetics and Evolutionary Computation
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
- _id: 25B07788-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '250152'
name: Limits to selection in biology and in evolutionary computation
publication: Acta Informatica
publication_identifier:
issn:
- '00015903'
publication_status: published
publisher: Springer
publist_id: '5898'
pubrep_id: '649'
quality_controlled: '1'
related_material:
record:
- id: '1835'
relation: earlier_version
status: public
scopus_import: '1'
status: public
title: Model checking the evolution of gene regulatory networks
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: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 54
year: '2017'
...
---
_id: '1367'
abstract:
- lang: eng
text: One of the major challenges in physically based modelling is making simulations
efficient. Adaptive models provide an essential solution to these efficiency goals.
These models are able to self-adapt in space and time, attempting to provide the
best possible compromise between accuracy and speed. This survey reviews the adaptive
solutions proposed so far in computer graphics. Models are classified according
to the strategy they use for adaptation, from time-stepping and freezing techniques
to geometric adaptivity in the form of structured grids, meshes and particles.
Applications range from fluids, through deformable bodies, to articulated solids.
acknowledgement: This work was partly supported by the starting grants ADAPT and BigSplash,
as well as the advanced grant EXPRESSIVE from the European Research Council (ERC-2012-StG_20111012,
ERC-2014-StG_638176 and ERC-2011-ADG_20110209).
article_processing_charge: No
author:
- first_name: Pierre
full_name: Manteaux, Pierre
last_name: Manteaux
- first_name: Christopher J
full_name: Wojtan, Christopher J
id: 3C61F1D2-F248-11E8-B48F-1D18A9856A87
last_name: Wojtan
orcid: 0000-0001-6646-5546
- first_name: Rahul
full_name: Narain, Rahul
last_name: Narain
- first_name: Stéphane
full_name: Redon, Stéphane
last_name: Redon
- first_name: François
full_name: Faure, François
last_name: Faure
- first_name: Marie
full_name: Cani, Marie
last_name: Cani
citation:
ama: Manteaux P, Wojtan C, Narain R, Redon S, Faure F, Cani M. Adaptive physically
based models in computer graphics. Computer Graphics Forum. 2017;36(6):312-337.
doi:10.1111/cgf.12941
apa: Manteaux, P., Wojtan, C., Narain, R., Redon, S., Faure, F., & Cani, M.
(2017). Adaptive physically based models in computer graphics. Computer Graphics
Forum. Wiley-Blackwell. https://doi.org/10.1111/cgf.12941
chicago: Manteaux, Pierre, Chris Wojtan, Rahul Narain, Stéphane Redon, François
Faure, and Marie Cani. “Adaptive Physically Based Models in Computer Graphics.”
Computer Graphics Forum. Wiley-Blackwell, 2017. https://doi.org/10.1111/cgf.12941.
ieee: P. Manteaux, C. Wojtan, R. Narain, S. Redon, F. Faure, and M. Cani, “Adaptive
physically based models in computer graphics,” Computer Graphics Forum,
vol. 36, no. 6. Wiley-Blackwell, pp. 312–337, 2017.
ista: Manteaux P, Wojtan C, Narain R, Redon S, Faure F, Cani M. 2017. Adaptive physically
based models in computer graphics. Computer Graphics Forum. 36(6), 312–337.
mla: Manteaux, Pierre, et al. “Adaptive Physically Based Models in Computer Graphics.”
Computer Graphics Forum, vol. 36, no. 6, Wiley-Blackwell, 2017, pp. 312–37,
doi:10.1111/cgf.12941.
short: P. Manteaux, C. Wojtan, R. Narain, S. Redon, F. Faure, M. Cani, Computer
Graphics Forum 36 (2017) 312–337.
date_created: 2018-12-11T11:51:37Z
date_published: 2017-09-01T00:00:00Z
date_updated: 2023-09-20T11:05:36Z
day: '01'
ddc:
- '000'
department:
- _id: ChWo
doi: 10.1111/cgf.12941
external_id:
isi:
- '000408634200019'
file:
- access_level: open_access
checksum: 7676e9a9ead6d58c3000988c97deb2ef
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:16:21Z
date_updated: 2020-07-14T12:44:47Z
file_id: '5208'
file_name: IST-2016-634-v1+1_starAdaptivity-cgf.pdf
file_size: 1434439
relation: main_file
file_date_updated: 2020-07-14T12:44:47Z
has_accepted_license: '1'
intvolume: ' 36'
isi: 1
issue: '6'
language:
- iso: eng
month: '09'
oa: 1
oa_version: Submitted Version
page: 312 - 337
publication: Computer Graphics Forum
publication_identifier:
issn:
- '01677055'
publication_status: published
publisher: Wiley-Blackwell
publist_id: '5873'
pubrep_id: '634'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Adaptive physically based models in computer graphics
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 36
year: '2017'
...
---
_id: '1407'
abstract:
- lang: eng
text: We consider the problem of computing the set of initial states of a dynamical
system such that there exists a control strategy to ensure that the trajectories
satisfy a temporal logic specification with probability 1 (almost-surely). We
focus on discrete-time, stochastic linear dynamics and specifications given as
formulas of the Generalized Reactivity(1) fragment of Linear Temporal Logic over
linear predicates in the states of the system. We propose a solution based on
iterative abstraction-refinement, and turn-based 2-player probabilistic games.
While the theoretical guarantee of our algorithm after any finite number of iterations
is only a partial solution, we show that if our algorithm terminates, then the
result is the set of all satisfying initial states. Moreover, for any (partial)
solution our algorithm synthesizes witness control strategies to ensure almost-sure
satisfaction of the temporal logic specification. While the proposed algorithm
guarantees progress and soundness in every iteration, it is computationally demanding.
We offer an alternative, more efficient solution for the reachability properties
that decomposes the problem into a series of smaller problems of the same type.
All algorithms are demonstrated on an illustrative case study.
article_processing_charge: No
arxiv: 1
author:
- first_name: Mária
full_name: Svoreňová, Mária
last_name: Svoreňová
- first_name: Jan
full_name: Kretinsky, Jan
id: 44CEF464-F248-11E8-B48F-1D18A9856A87
last_name: Kretinsky
orcid: 0000-0002-8122-2881
- first_name: Martin
full_name: Chmelik, Martin
id: 3624234E-F248-11E8-B48F-1D18A9856A87
last_name: Chmelik
- first_name: Krishnendu
full_name: Chatterjee, Krishnendu
id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
last_name: Chatterjee
orcid: 0000-0002-4561-241X
- first_name: Ivana
full_name: Cěrná, Ivana
last_name: Cěrná
- first_name: Cǎlin
full_name: Belta, Cǎlin
last_name: Belta
citation:
ama: 'Svoreňová M, Kretinsky J, Chmelik M, Chatterjee K, Cěrná I, Belta C. Temporal
logic control for stochastic linear systems using abstraction refinement of probabilistic
games. Nonlinear Analysis: Hybrid Systems. 2017;23(2):230-253. doi:10.1016/j.nahs.2016.04.006'
apa: 'Svoreňová, M., Kretinsky, J., Chmelik, M., Chatterjee, K., Cěrná, I., &
Belta, C. (2017). Temporal logic control for stochastic linear systems using abstraction
refinement of probabilistic games. Nonlinear Analysis: Hybrid Systems.
Elsevier. https://doi.org/10.1016/j.nahs.2016.04.006'
chicago: 'Svoreňová, Mária, Jan Kretinsky, Martin Chmelik, Krishnendu Chatterjee,
Ivana Cěrná, and Cǎlin Belta. “Temporal Logic Control for Stochastic Linear Systems
Using Abstraction Refinement of Probabilistic Games.” Nonlinear Analysis: Hybrid
Systems. Elsevier, 2017. https://doi.org/10.1016/j.nahs.2016.04.006.'
ieee: 'M. Svoreňová, J. Kretinsky, M. Chmelik, K. Chatterjee, I. Cěrná, and C. Belta,
“Temporal logic control for stochastic linear systems using abstraction refinement
of probabilistic games,” Nonlinear Analysis: Hybrid Systems, vol. 23, no.
2. Elsevier, pp. 230–253, 2017.'
ista: 'Svoreňová M, Kretinsky J, Chmelik M, Chatterjee K, Cěrná I, Belta C. 2017.
Temporal logic control for stochastic linear systems using abstraction refinement
of probabilistic games. Nonlinear Analysis: Hybrid Systems. 23(2), 230–253.'
mla: 'Svoreňová, Mária, et al. “Temporal Logic Control for Stochastic Linear Systems
Using Abstraction Refinement of Probabilistic Games.” Nonlinear Analysis: Hybrid
Systems, vol. 23, no. 2, Elsevier, 2017, pp. 230–53, doi:10.1016/j.nahs.2016.04.006.'
short: 'M. Svoreňová, J. Kretinsky, M. Chmelik, K. Chatterjee, I. Cěrná, C. Belta,
Nonlinear Analysis: Hybrid Systems 23 (2017) 230–253.'
date_created: 2018-12-11T11:51:50Z
date_published: 2017-02-01T00:00:00Z
date_updated: 2023-09-20T09:43:09Z
day: '01'
department:
- _id: ToHe
- _id: KrCh
doi: 10.1016/j.nahs.2016.04.006
ec_funded: 1
external_id:
arxiv:
- '1410.5387'
isi:
- '000390637000014'
intvolume: ' 23'
isi: 1
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://arxiv.org/abs/1410.5387
month: '02'
oa: 1
oa_version: Preprint
page: 230 - 253
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
- _id: 25EE3708-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '267989'
name: Quantitative Reactive Modeling
- _id: 2581B60A-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '279307'
name: 'Quantitative Graph Games: Theory and Applications'
- _id: 25832EC2-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: S 11407_N23
name: Rigorous Systems Engineering
- _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
publication: 'Nonlinear Analysis: Hybrid Systems'
publication_status: published
publisher: Elsevier
publist_id: '5800'
quality_controlled: '1'
related_material:
record:
- id: '1689'
relation: earlier_version
status: public
scopus_import: '1'
status: public
title: Temporal logic control for stochastic linear systems using abstraction refinement
of probabilistic games
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 23
year: '2017'
...
---
_id: '14205'
abstract:
- lang: eng
text: Two of the most fundamental prototypes of greedy optimization are the matching
pursuit and Frank-Wolfe algorithms. In this paper, we take a unified view on both
classes of methods, leading to the first explicit convergence rates of matching
pursuit methods in an optimization sense, for general sets of atoms. We derive
sublinear (1/t) convergence for both classes on general smooth objectives, and
linear convergence on strongly convex objectives, as well as a clear correspondence
of algorithm variants. Our presented algorithms and rates are affine invariant,
and do not need any incoherence or sparsity assumptions.
article_processing_charge: No
arxiv: 1
author:
- first_name: Francesco
full_name: Locatello, Francesco
id: 26cfd52f-2483-11ee-8040-88983bcc06d4
last_name: Locatello
orcid: 0000-0002-4850-0683
- first_name: Rajiv
full_name: Khanna, Rajiv
last_name: Khanna
- first_name: Michael
full_name: Tschannen, Michael
last_name: Tschannen
- first_name: Martin
full_name: Jaggi, Martin
last_name: Jaggi
citation:
ama: 'Locatello F, Khanna R, Tschannen M, Jaggi M. A unified optimization view on
generalized matching pursuit and Frank-Wolfe. In: Proceedings of the 20th International
Conference on Artificial Intelligence and Statistics. Vol 54. ML Research
Press; 2017:860-868.'
apa: 'Locatello, F., Khanna, R., Tschannen, M., & Jaggi, M. (2017). A unified
optimization view on generalized matching pursuit and Frank-Wolfe. In Proceedings
of the 20th International Conference on Artificial Intelligence and Statistics
(Vol. 54, pp. 860–868). Fort Lauderdale, FL, United States: ML Research Press.'
chicago: Locatello, Francesco, Rajiv Khanna, Michael Tschannen, and Martin Jaggi.
“A Unified Optimization View on Generalized Matching Pursuit and Frank-Wolfe.”
In Proceedings of the 20th International Conference on Artificial Intelligence
and Statistics, 54:860–68. ML Research Press, 2017.
ieee: F. Locatello, R. Khanna, M. Tschannen, and M. Jaggi, “A unified optimization
view on generalized matching pursuit and Frank-Wolfe,” in Proceedings of the
20th International Conference on Artificial Intelligence and Statistics, Fort
Lauderdale, FL, United States, 2017, vol. 54, pp. 860–868.
ista: 'Locatello F, Khanna R, Tschannen M, Jaggi M. 2017. A unified optimization
view on generalized matching pursuit and Frank-Wolfe. Proceedings of the 20th
International Conference on Artificial Intelligence and Statistics. AISTATS: Conference
on Artificial Intelligence and Statistics vol. 54, 860–868.'
mla: Locatello, Francesco, et al. “A Unified Optimization View on Generalized Matching
Pursuit and Frank-Wolfe.” Proceedings of the 20th International Conference
on Artificial Intelligence and Statistics, vol. 54, ML Research Press, 2017,
pp. 860–68.
short: F. Locatello, R. Khanna, M. Tschannen, M. Jaggi, in:, Proceedings of the
20th International Conference on Artificial Intelligence and Statistics, ML Research
Press, 2017, pp. 860–868.
conference:
end_date: 2017-04-22
location: Fort Lauderdale, FL, United States
name: 'AISTATS: Conference on Artificial Intelligence and Statistics'
start_date: 2017-04-20
date_created: 2023-08-22T14:17:19Z
date_published: 2017-02-21T00:00:00Z
date_updated: 2023-09-13T09:49:10Z
day: '21'
department:
- _id: FrLo
extern: '1'
external_id:
arxiv:
- '1702.06457'
intvolume: ' 54'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.1702.06457
month: '02'
oa: 1
oa_version: Preprint
page: 860-868
publication: Proceedings of the 20th International Conference on Artificial Intelligence
and Statistics
publication_status: published
publisher: ML Research Press
quality_controlled: '1'
status: public
title: A unified optimization view on generalized matching pursuit and Frank-Wolfe
type: conference
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 54
year: '2017'
...
---
_id: '14206'
abstract:
- lang: eng
text: Greedy optimization methods such as Matching Pursuit (MP) and Frank-Wolfe
(FW) algorithms regained popularity in recent years due to their simplicity, effectiveness
and theoretical guarantees. MP and FW address optimization over the linear span
and the convex hull of a set of atoms, respectively. In this paper, we consider
the intermediate case of optimization over the convex cone, parametrized as the
conic hull of a generic atom set, leading to the first principled definitions
of non-negative MP algorithms for which we give explicit convergence rates and
demonstrate excellent empirical performance. In particular, we derive sublinear
(O(1/t)) convergence on general smooth and convex objectives, and linear convergence
(O(e−t)) on strongly convex objectives, in both cases for general sets of atoms.
Furthermore, we establish a clear correspondence of our algorithms to known algorithms
from the MP and FW literature. Our novel algorithms and analyses target general
atom sets and general objective functions, and hence are directly applicable to
a large variety of learning settings.
article_processing_charge: No
arxiv: 1
author:
- first_name: Francesco
full_name: Locatello, Francesco
id: 26cfd52f-2483-11ee-8040-88983bcc06d4
last_name: Locatello
orcid: 0000-0002-4850-0683
- first_name: Michael
full_name: Tschannen, Michael
last_name: Tschannen
- first_name: Gunnar
full_name: Rätsch, Gunnar
last_name: Rätsch
- first_name: Martin
full_name: Jaggi, Martin
last_name: Jaggi
citation:
ama: 'Locatello F, Tschannen M, Rätsch G, Jaggi M. Greedy algorithms for cone constrained
optimization with convergence guarantees. In: Advances in Neural Information
Processing Systems. ; 2017.'
apa: Locatello, F., Tschannen, M., Rätsch, G., & Jaggi, M. (2017). Greedy algorithms
for cone constrained optimization with convergence guarantees. In Advances
in Neural Information Processing Systems. Long Beach, CA, United States.
chicago: Locatello, Francesco, Michael Tschannen, Gunnar Rätsch, and Martin Jaggi.
“Greedy Algorithms for Cone Constrained Optimization with Convergence Guarantees.”
In Advances in Neural Information Processing Systems, 2017.
ieee: F. Locatello, M. Tschannen, G. Rätsch, and M. Jaggi, “Greedy algorithms for
cone constrained optimization with convergence guarantees,” in Advances in
Neural Information Processing Systems, Long Beach, CA, United States, 2017.
ista: 'Locatello F, Tschannen M, Rätsch G, Jaggi M. 2017. Greedy algorithms for
cone constrained optimization with convergence guarantees. Advances in Neural
Information Processing Systems. NeurIPS: Neural Information Processing Systems.'
mla: Locatello, Francesco, et al. “Greedy Algorithms for Cone Constrained Optimization
with Convergence Guarantees.” Advances in Neural Information Processing Systems,
2017.
short: F. Locatello, M. Tschannen, G. Rätsch, M. Jaggi, in:, Advances in Neural
Information Processing Systems, 2017.
conference:
end_date: 2017-12-09
location: Long Beach, CA, United States
name: 'NeurIPS: Neural Information Processing Systems'
start_date: 2017-12-04
date_created: 2023-08-22T14:17:38Z
date_published: 2017-05-31T00:00:00Z
date_updated: 2023-09-13T08:32:23Z
day: '31'
department:
- _id: FrLo
extern: '1'
external_id:
arxiv:
- '1705.11041'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1705.11041
month: '05'
oa: 1
oa_version: Preprint
publication: Advances in Neural Information Processing Systems
publication_identifier:
isbn:
- '9781510860964'
publication_status: published
quality_controlled: '1'
status: public
title: Greedy algorithms for cone constrained optimization with convergence guarantees
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2017'
...
---
_id: '1433'
abstract:
- lang: eng
text: Phat is an open-source C. ++ library for the computation of persistent homology
by matrix reduction, targeted towards developers of software for topological data
analysis. We aim for a simple generic design that decouples algorithms from data
structures without sacrificing efficiency or user-friendliness. We provide numerous
different reduction strategies as well as data types to store and manipulate the
boundary matrix. We compare the different combinations through extensive experimental
evaluation and identify optimization techniques that work well in practical situations.
We also compare our software with various other publicly available libraries for
persistent homology.
article_processing_charge: No
article_type: original
author:
- first_name: Ulrich
full_name: Bauer, Ulrich
last_name: Bauer
- first_name: Michael
full_name: Kerber, Michael
last_name: Kerber
- first_name: Jan
full_name: Reininghaus, Jan
last_name: Reininghaus
- first_name: Hubert
full_name: Wagner, Hubert
id: 379CA8B8-F248-11E8-B48F-1D18A9856A87
last_name: Wagner
citation:
ama: Bauer U, Kerber M, Reininghaus J, Wagner H. Phat - Persistent homology algorithms
toolbox. Journal of Symbolic Computation. 2017;78:76-90. doi:10.1016/j.jsc.2016.03.008
apa: Bauer, U., Kerber, M., Reininghaus, J., & Wagner, H. (2017). Phat - Persistent
homology algorithms toolbox. Journal of Symbolic Computation. Academic
Press. https://doi.org/10.1016/j.jsc.2016.03.008
chicago: Bauer, Ulrich, Michael Kerber, Jan Reininghaus, and Hubert Wagner. “Phat
- Persistent Homology Algorithms Toolbox.” Journal of Symbolic Computation.
Academic Press, 2017. https://doi.org/10.1016/j.jsc.2016.03.008.
ieee: U. Bauer, M. Kerber, J. Reininghaus, and H. Wagner, “Phat - Persistent homology
algorithms toolbox,” Journal of Symbolic Computation, vol. 78. Academic
Press, pp. 76–90, 2017.
ista: Bauer U, Kerber M, Reininghaus J, Wagner H. 2017. Phat - Persistent homology
algorithms toolbox. Journal of Symbolic Computation. 78, 76–90.
mla: Bauer, Ulrich, et al. “Phat - Persistent Homology Algorithms Toolbox.” Journal
of Symbolic Computation, vol. 78, Academic Press, 2017, pp. 76–90, doi:10.1016/j.jsc.2016.03.008.
short: U. Bauer, M. Kerber, J. Reininghaus, H. Wagner, Journal of Symbolic Computation
78 (2017) 76–90.
date_created: 2018-12-11T11:51:59Z
date_published: 2017-01-01T00:00:00Z
date_updated: 2023-09-20T09:42:40Z
day: '01'
department:
- _id: HeEd
doi: 10.1016/j.jsc.2016.03.008
ec_funded: 1
external_id:
isi:
- '000384396000005'
intvolume: ' 78'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1016/j.jsc.2016.03.008
month: '01'
oa: 1
oa_version: Published Version
page: 76 - 90
project:
- _id: 255D761E-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '318493'
name: Topological Complex Systems
publication: Journal of Symbolic Computation
publication_identifier:
issn:
- ' 07477171'
publication_status: published
publisher: Academic Press
publist_id: '5765'
quality_controlled: '1'
related_material:
record:
- id: '10894'
relation: earlier_version
status: public
scopus_import: '1'
status: public
title: Phat - Persistent homology algorithms toolbox
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 78
year: '2017'
...
---
_id: '540'
abstract:
- lang: eng
text: RNA-dependent RNA polymerases (RdRps) play a key role in the life cycle of
RNA viruses and impact their immunobiology. The arenavirus lymphocytic choriomeningitis
virus (LCMV) strain Clone 13 provides a benchmark model for studying chronic infection.
A major genetic determinant for its ability to persist maps to a single amino
acid exchange in the viral L protein, which exhibits RdRp activity, yet its functional
consequences remain elusive. To unravel the L protein interactions with the host
proteome, we engineered infectious L protein-tagged LCMV virions by reverse genetics.
A subsequent mass-spectrometric analysis of L protein pulldowns from infected
human cells revealed a comprehensive network of interacting host proteins. The
obtained LCMV L protein interactome was bioinformatically integrated with known
host protein interactors of RdRps from other RNA viruses, emphasizing interconnected
modules of human proteins. Functional characterization of selected interactors
highlighted proviral (DDX3X) as well as antiviral (NKRF, TRIM21) host factors.
To corroborate these findings, we infected Trim21-/-mice with LCMV and found impaired
virus control in chronic infection. These results provide insights into the complex
interactions of the arenavirus LCMV and other viral RdRps with the host proteome
and contribute to a better molecular understanding of how chronic viruses interact
with their host.
article_number: e1006758
author:
- first_name: Kseniya
full_name: Khamina, Kseniya
last_name: Khamina
- first_name: Alexander
full_name: Lercher, Alexander
last_name: Lercher
- first_name: Michael
full_name: Caldera, Michael
last_name: Caldera
- first_name: Christopher
full_name: Schliehe, Christopher
last_name: Schliehe
- first_name: Bojan
full_name: Vilagos, Bojan
last_name: Vilagos
- first_name: Mehmet
full_name: Sahin, Mehmet
last_name: Sahin
- first_name: Lindsay
full_name: Kosack, Lindsay
last_name: Kosack
- first_name: Anannya
full_name: Bhattacharya, Anannya
last_name: Bhattacharya
- first_name: Peter
full_name: Májek, Peter
last_name: Májek
- first_name: Alexey
full_name: Stukalov, Alexey
last_name: Stukalov
- first_name: Roberto
full_name: Sacco, Roberto
id: 42C9F57E-F248-11E8-B48F-1D18A9856A87
last_name: Sacco
- first_name: Leo
full_name: James, Leo
last_name: James
- first_name: Daniel
full_name: Pinschewer, Daniel
last_name: Pinschewer
- first_name: Keiryn
full_name: Bennett, Keiryn
last_name: Bennett
- first_name: Jörg
full_name: Menche, Jörg
last_name: Menche
- first_name: Andreas
full_name: Bergthaler, Andreas
last_name: Bergthaler
citation:
ama: Khamina K, Lercher A, Caldera M, et al. Characterization of host proteins interacting
with the lymphocytic choriomeningitis virus L protein. PLoS Pathogens.
2017;13(12). doi:10.1371/journal.ppat.1006758
apa: Khamina, K., Lercher, A., Caldera, M., Schliehe, C., Vilagos, B., Sahin, M.,
… Bergthaler, A. (2017). Characterization of host proteins interacting with the
lymphocytic choriomeningitis virus L protein. PLoS Pathogens. Public Library
of Science. https://doi.org/10.1371/journal.ppat.1006758
chicago: Khamina, Kseniya, Alexander Lercher, Michael Caldera, Christopher Schliehe,
Bojan Vilagos, Mehmet Sahin, Lindsay Kosack, et al. “Characterization of Host
Proteins Interacting with the Lymphocytic Choriomeningitis Virus L Protein.” PLoS
Pathogens. Public Library of Science, 2017. https://doi.org/10.1371/journal.ppat.1006758.
ieee: K. Khamina et al., “Characterization of host proteins interacting with
the lymphocytic choriomeningitis virus L protein,” PLoS Pathogens, vol.
13, no. 12. Public Library of Science, 2017.
ista: Khamina K, Lercher A, Caldera M, Schliehe C, Vilagos B, Sahin M, Kosack L,
Bhattacharya A, Májek P, Stukalov A, Sacco R, James L, Pinschewer D, Bennett K,
Menche J, Bergthaler A. 2017. Characterization of host proteins interacting with
the lymphocytic choriomeningitis virus L protein. PLoS Pathogens. 13(12), e1006758.
mla: Khamina, Kseniya, et al. “Characterization of Host Proteins Interacting with
the Lymphocytic Choriomeningitis Virus L Protein.” PLoS Pathogens, vol.
13, no. 12, e1006758, Public Library of Science, 2017, doi:10.1371/journal.ppat.1006758.
short: K. Khamina, A. Lercher, M. Caldera, C. Schliehe, B. Vilagos, M. Sahin, L.
Kosack, A. Bhattacharya, P. Májek, A. Stukalov, R. Sacco, L. James, D. Pinschewer,
K. Bennett, J. Menche, A. Bergthaler, PLoS Pathogens 13 (2017).
date_created: 2018-12-11T11:47:03Z
date_published: 2017-12-01T00:00:00Z
date_updated: 2021-01-12T08:01:48Z
day: '01'
ddc:
- '576'
- '616'
department:
- _id: GaNo
doi: 10.1371/journal.ppat.1006758
file:
- access_level: open_access
checksum: 1aa20f19a1e90664fadce6e7d5284fdc
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:12:26Z
date_updated: 2020-07-14T12:46:44Z
file_id: '4944'
file_name: IST-2018-931-v1+1_journal.ppat.1006758.pdf
file_size: 4106772
relation: main_file
file_date_updated: 2020-07-14T12:46:44Z
has_accepted_license: '1'
intvolume: ' 13'
issue: '12'
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
publication: PLoS Pathogens
publication_identifier:
issn:
- '15537366'
publication_status: published
publisher: Public Library of Science
publist_id: '7276'
pubrep_id: '931'
quality_controlled: '1'
scopus_import: 1
status: public
title: Characterization of host proteins interacting with the lymphocytic choriomeningitis
virus L protein
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: 13
year: '2017'
...
---
_id: '541'
abstract:
- lang: eng
text: 'While we have good understanding of bacterial metabolism at the population
level, we know little about the metabolic behavior of individual cells: do single
cells in clonal populations sometimes specialize on different metabolic pathways?
Such metabolic specialization could be driven by stochastic gene expression and
could provide individual cells with growth benefits of specialization. We measured
the degree of phenotypic specialization in two parallel metabolic pathways, the
assimilation of glucose and arabinose. We grew Escherichia coli in chemostats,
and used isotope-labeled sugars in combination with nanometer-scale secondary
ion mass spectrometry and mathematical modeling to quantify sugar assimilation
at the single-cell level. We found large variation in metabolic activities between
single cells, both in absolute assimilation and in the degree to which individual
cells specialize in the assimilation of different sugars. Analysis of transcriptional
reporters indicated that this variation was at least partially based on cell-to-cell
variation in gene expression. Metabolic differences between cells in clonal populations
could potentially reduce metabolic incompatibilities between different pathways,
and increase the rate at which parallel reactions can be performed.'
article_number: e1007122
author:
- first_name: Nela
full_name: Nikolic, Nela
id: 42D9CABC-F248-11E8-B48F-1D18A9856A87
last_name: Nikolic
orcid: 0000-0001-9068-6090
- first_name: Frank
full_name: Schreiber, Frank
last_name: Schreiber
- first_name: Alma
full_name: Dal Co, Alma
last_name: Dal Co
- first_name: Daniel
full_name: Kiviet, Daniel
last_name: Kiviet
- first_name: Tobias
full_name: Bergmiller, Tobias
id: 2C471CFA-F248-11E8-B48F-1D18A9856A87
last_name: Bergmiller
orcid: 0000-0001-5396-4346
- first_name: Sten
full_name: Littmann, Sten
last_name: Littmann
- first_name: Marcel
full_name: Kuypers, Marcel
last_name: Kuypers
- first_name: Martin
full_name: Ackermann, Martin
last_name: Ackermann
citation:
ama: Nikolic N, Schreiber F, Dal Co A, et al. Cell-to-cell variation and specialization
in sugar metabolism in clonal bacterial populations. PLoS Genetics. 2017;13(12).
doi:10.1371/journal.pgen.1007122
apa: Nikolic, N., Schreiber, F., Dal Co, A., Kiviet, D., Bergmiller, T., Littmann,
S., … Ackermann, M. (2017). Cell-to-cell variation and specialization in sugar
metabolism in clonal bacterial populations. PLoS Genetics. Public Library
of Science. https://doi.org/10.1371/journal.pgen.1007122
chicago: Nikolic, Nela, Frank Schreiber, Alma Dal Co, Daniel Kiviet, Tobias Bergmiller,
Sten Littmann, Marcel Kuypers, and Martin Ackermann. “Cell-to-Cell Variation and
Specialization in Sugar Metabolism in Clonal Bacterial Populations.” PLoS Genetics.
Public Library of Science, 2017. https://doi.org/10.1371/journal.pgen.1007122.
ieee: N. Nikolic et al., “Cell-to-cell variation and specialization in sugar
metabolism in clonal bacterial populations,” PLoS Genetics, vol. 13, no.
12. Public Library of Science, 2017.
ista: Nikolic N, Schreiber F, Dal Co A, Kiviet D, Bergmiller T, Littmann S, Kuypers
M, Ackermann M. 2017. Cell-to-cell variation and specialization in sugar metabolism
in clonal bacterial populations. PLoS Genetics. 13(12), e1007122.
mla: Nikolic, Nela, et al. “Cell-to-Cell Variation and Specialization in Sugar Metabolism
in Clonal Bacterial Populations.” PLoS Genetics, vol. 13, no. 12, e1007122,
Public Library of Science, 2017, doi:10.1371/journal.pgen.1007122.
short: N. Nikolic, F. Schreiber, A. Dal Co, D. Kiviet, T. Bergmiller, S. Littmann,
M. Kuypers, M. Ackermann, PLoS Genetics 13 (2017).
date_created: 2018-12-11T11:47:04Z
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title: Cell-to-cell variation and specialization in sugar metabolism in clonal bacterial
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abstract:
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text: Development of vascular tissue is a remarkable example of intercellular communication
and coordinated development involving hormonal signaling and tissue polarity.
Thus far, studies on vascular patterning and regeneration have been conducted
mainly in trees—woody plants—with a well-developed layer of vascular cambium and
secondary tissues. Trees are difficult to use as genetic models, i.e., due to
long generation time, unstable environmental conditions, and lack of available
mutants and transgenic lines. Therefore, the use of the main genetic model plant
Arabidopsis thaliana (L.) Heynh., with a wealth of available marker and transgenic
lines, provides a unique opportunity to address molecular mechanism of vascular
tissue formation and regeneration. With specific treatments, the tiny weed Arabidopsis
can serve as a model to understand the growth of mighty trees and interconnect
a tree physiology with molecular genetics and cell biology of Arabidopsis.
alternative_title:
- Agricultural and Biological Sciences
author:
- first_name: Ewa
full_name: Mazur, Ewa
last_name: Mazur
- first_name: Jirí
full_name: Friml, Jirí
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ama: 'Mazur E, Friml J. Vascular tissue development and regeneration in the model
plant arabidopsis. In: Jurić S, ed. Plant Engineering. Plant Engineering.
InTech; 2017:113-140. doi:10.5772/intechopen.69712'
apa: Mazur, E., & Friml, J. (2017). Vascular tissue development and regeneration
in the model plant arabidopsis. In S. Jurić (Ed.), Plant Engineering (pp.
113–140). InTech. https://doi.org/10.5772/intechopen.69712
chicago: Mazur, Ewa, and Jiří Friml. “Vascular Tissue Development and Regeneration
in the Model Plant Arabidopsis.” In Plant Engineering, edited by Snježana
Jurić, 113–40. Plant Engineering. InTech, 2017. https://doi.org/10.5772/intechopen.69712.
ieee: E. Mazur and J. Friml, “Vascular tissue development and regeneration in the
model plant arabidopsis,” in Plant Engineering, S. Jurić, Ed. InTech, 2017,
pp. 113–140.
ista: 'Mazur E, Friml J. 2017.Vascular tissue development and regeneration in the
model plant arabidopsis. In: Plant Engineering. Agricultural and Biological Sciences,
, 113–140.'
mla: Mazur, Ewa, and Jiří Friml. “Vascular Tissue Development and Regeneration in
the Model Plant Arabidopsis.” Plant Engineering, edited by Snježana Jurić,
InTech, 2017, pp. 113–40, doi:10.5772/intechopen.69712.
short: E. Mazur, J. Friml, in:, S. Jurić (Ed.), Plant Engineering, InTech, 2017,
pp. 113–140.
date_created: 2018-12-11T11:47:05Z
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grant_number: '282300'
name: Polarity and subcellular dynamics in plants
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publisher: InTech
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...