---
_id: '8510'
abstract:
- lang: eng
text: In this paper, using the ideas of Bessi and Mather, we present a simple mechanical
system exhibiting Arnold diffusion. This system of a particle in a small periodic
potential can be also interpreted as ray propagation in a periodic optical medium
with a near-constant index of refraction. Arnold diffusion in this context manifests
itself as an arbitrary finite change of direction for nearly constant index of
refraction.
article_processing_charge: No
article_type: original
author:
- first_name: Vadim
full_name: Kaloshin, Vadim
id: FE553552-CDE8-11E9-B324-C0EBE5697425
last_name: Kaloshin
orcid: 0000-0002-6051-2628
- first_name: Mark
full_name: Levi, Mark
last_name: Levi
citation:
ama: Kaloshin V, Levi M. An example of Arnold diffusion for near-integrable Hamiltonians.
Bulletin of the American Mathematical Society. 2008;45(3):409-427. doi:10.1090/s0273-0979-08-01211-1
apa: Kaloshin, V., & Levi, M. (2008). An example of Arnold diffusion for near-integrable
Hamiltonians. Bulletin of the American Mathematical Society. American Mathematical
Society. https://doi.org/10.1090/s0273-0979-08-01211-1
chicago: Kaloshin, Vadim, and Mark Levi. “An Example of Arnold Diffusion for Near-Integrable
Hamiltonians.” Bulletin of the American Mathematical Society. American
Mathematical Society, 2008. https://doi.org/10.1090/s0273-0979-08-01211-1.
ieee: V. Kaloshin and M. Levi, “An example of Arnold diffusion for near-integrable
Hamiltonians,” Bulletin of the American Mathematical Society, vol. 45,
no. 3. American Mathematical Society, pp. 409–427, 2008.
ista: Kaloshin V, Levi M. 2008. An example of Arnold diffusion for near-integrable
Hamiltonians. Bulletin of the American Mathematical Society. 45(3), 409–427.
mla: Kaloshin, Vadim, and Mark Levi. “An Example of Arnold Diffusion for Near-Integrable
Hamiltonians.” Bulletin of the American Mathematical Society, vol. 45,
no. 3, American Mathematical Society, 2008, pp. 409–27, doi:10.1090/s0273-0979-08-01211-1.
short: V. Kaloshin, M. Levi, Bulletin of the American Mathematical Society 45 (2008)
409–427.
date_created: 2020-09-18T10:48:20Z
date_published: 2008-07-01T00:00:00Z
date_updated: 2021-01-12T08:19:47Z
day: '01'
doi: 10.1090/s0273-0979-08-01211-1
extern: '1'
intvolume: ' 45'
issue: '3'
keyword:
- Applied Mathematics
- General Mathematics
language:
- iso: eng
month: '07'
oa_version: None
page: 409-427
publication: Bulletin of the American Mathematical Society
publication_identifier:
issn:
- 0273-0979
publication_status: published
publisher: American Mathematical Society
quality_controlled: '1'
status: public
title: An example of Arnold diffusion for near-integrable Hamiltonians
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 45
year: '2008'
...
---
_id: '895'
abstract:
- lang: eng
text: Background. The arginine vasopressin V1a receptor (V1aR) modulates social
cognition and behavior in a wide variety of species. Variation in a repetitive
microsatellite element in the 5′ flanking region of the V1aR gene (AVPR1A) in
rodents has been associated with variation in brain V1aR expression and in social
behavior. In humans, the 5′ flanking region of AVPR1A contains a tandem duplication
of two ∼350 bp, microsatellite-containing elements located approximately 3.5 kb
upstream of the transcription start site. The first block, referred to as DupA,
contains a polymorphic (GT) 25microsatellite; the second block, DupB, has a complex
(CT) 4-(TT)-(CT)8-(GT)24polymorphic motif, known as RS3. Polymorphisms in RS3
have been associated with variation in sociobehavioral traits in humans, including
autism spectrum disorders. Thus, evolution of these regions may have contributed
to variation in social behavior in primates. We examined the structure of these
regions in six ape, six monkey, and one prosimian species. Results. Both tandem
repeat blocks are present upstream of the AVPR1A coding region in five of the
ape species we investigated, while monkeys have only one copy of this region.
As in humans, the microsatellites within DupA and DupB are polymorphic in many
primate species. Furthermore, both single (lacking DupB) and duplicated alleles
(containing both DupA and DupB) are present in chimpanzee (Pan troglodytes) populations
with allele frequencies of 0.795 and 0.205 for the single and duplicated alleles,
respectively, based on the analysis of 47 wild-caught individuals. Finally, a
phylogenetic reconstruction suggests two alternate evolutionary histories for
this locus. Conclusion. There is no obvious relationship between the presence
of the RS3 duplication and social organization in primates. However, polymorphisms
identified in some species may be useful in future genetic association studies.
In particular, the presence of both single and duplicated alleles in chimpanzees
provides a unique opportunity to assess the functional role of this duplication
in contributing to variation in social behavior in primates. While our initial
studies show no signs of directional selection on this locus in chimps, pharmacological
and genetic association studies support a potential role for this region in influencing
V1aR expression and social behavior.
acknowledgement: |
We thank the caretakers at Zoo Atlanta and Yerkes National Primate Center for help with procuring specimens. Additional DNA samples were supplied by Bill Hopkins, Emory University (chimpanzee), Allyson Bennet, Wake Forest University (chimpanzee, rhesus macaque, bonnet macaque), Mar Sanchez, Emory University (rhesus macaque), and Anne Yoder, Duke University (galago). Susan Lambeth, M.D. Anderson Cancer Center, and Katie Chace, Yerkes National Primate Center, helped provide records regarding the origins of wild born chimps at these centers. We would like to thank Dr Lisa McGraw and two anonymous reviewers for their com- ments on this manuscript. This work was supported by NSF IBN-9876754, NIH RR00165, NIMH56897 (LJY), MH64692 (LJY) and a Howard Hughes Predoctoral Fellowship (ZRD).
author:
- first_name: Zoe
full_name: Donaldson, Zoe R
last_name: Donaldson
- first_name: Fyodor
full_name: Fyodor Kondrashov
id: 44FDEF62-F248-11E8-B48F-1D18A9856A87
last_name: Kondrashov
orcid: 0000-0001-8243-4694
- first_name: Andrea
full_name: Putnam, Andrea S
last_name: Putnam
- first_name: Yaohui
full_name: Bai, Yaohui
last_name: Bai
- first_name: Tara
full_name: Stoinski, Tara S
last_name: Stoinski
- first_name: Elizabeth
full_name: Hammock, Elizabeth A
last_name: Hammock
- first_name: Larry
full_name: Young, Larry
last_name: Young
citation:
ama: Donaldson Z, Kondrashov F, Putnam A, et al. Evolution of a behavior-linked
microsatellite-containing element in the 5′ flanking region of the primate AVPR1A
gene. BMC Evolutionary Biology. 2008;8(1). doi:10.1186/1471-2148-8-180
apa: Donaldson, Z., Kondrashov, F., Putnam, A., Bai, Y., Stoinski, T., Hammock,
E., & Young, L. (2008). Evolution of a behavior-linked microsatellite-containing
element in the 5′ flanking region of the primate AVPR1A gene. BMC Evolutionary
Biology. BioMed Central. https://doi.org/10.1186/1471-2148-8-180
chicago: Donaldson, Zoe, Fyodor Kondrashov, Andrea Putnam, Yaohui Bai, Tara Stoinski,
Elizabeth Hammock, and Larry Young. “Evolution of a Behavior-Linked Microsatellite-Containing
Element in the 5′ Flanking Region of the Primate AVPR1A Gene.” BMC Evolutionary
Biology. BioMed Central, 2008. https://doi.org/10.1186/1471-2148-8-180.
ieee: Z. Donaldson et al., “Evolution of a behavior-linked microsatellite-containing
element in the 5′ flanking region of the primate AVPR1A gene,” BMC Evolutionary
Biology, vol. 8, no. 1. BioMed Central, 2008.
ista: Donaldson Z, Kondrashov F, Putnam A, Bai Y, Stoinski T, Hammock E, Young L.
2008. Evolution of a behavior-linked microsatellite-containing element in the
5′ flanking region of the primate AVPR1A gene. BMC Evolutionary Biology. 8(1).
mla: Donaldson, Zoe, et al. “Evolution of a Behavior-Linked Microsatellite-Containing
Element in the 5′ Flanking Region of the Primate AVPR1A Gene.” BMC Evolutionary
Biology, vol. 8, no. 1, BioMed Central, 2008, doi:10.1186/1471-2148-8-180.
short: Z. Donaldson, F. Kondrashov, A. Putnam, Y. Bai, T. Stoinski, E. Hammock,
L. Young, BMC Evolutionary Biology 8 (2008).
date_created: 2018-12-11T11:49:04Z
date_published: 2008-01-01T00:00:00Z
date_updated: 2021-01-12T08:21:29Z
day: '01'
doi: 10.1186/1471-2148-8-180
extern: 1
intvolume: ' 8'
issue: '1'
month: '01'
publication: BMC Evolutionary Biology
publication_status: published
publisher: BioMed Central
publist_id: '6753'
quality_controlled: 0
status: public
title: Evolution of a behavior-linked microsatellite-containing element in the 5′
flanking region of the primate AVPR1A gene
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
volume: 8
year: '2008'
...
---
_id: '907'
abstract:
- lang: eng
text: The most common form of protein-coding gene overlap in eukaryotes is a simple
nested structure, whereby one gene is embedded in an intron of another. Analysis
of nested protein-coding genes in vertebrates, fruit flies and nematodes revealed
substantially higher rates of evolutionary gains than losses. The accumulation
of nested gene structures could not be attributed to any obvious functional relationships
between the genes involved and represents an increase of the organizational complexity
of animal genomes via a neutral process.
author:
- first_name: Raquel
full_name: Assis, Raquel
last_name: Assis
- first_name: Alexey
full_name: Kondrashov, Alexey S
last_name: Kondrashov
- first_name: Eugene
full_name: Koonin, Eugene V
last_name: Koonin
- first_name: Fyodor
full_name: Fyodor Kondrashov
id: 44FDEF62-F248-11E8-B48F-1D18A9856A87
last_name: Kondrashov
orcid: 0000-0001-8243-4694
citation:
ama: Assis R, Kondrashov A, Koonin E, Kondrashov F. Nested genes and increasing
organizational complexity of metazoan genomes. Trends in Genetics. 2008;24(10):475-478.
doi:10.1016/j.tig.2008.08.003
apa: Assis, R., Kondrashov, A., Koonin, E., & Kondrashov, F. (2008). Nested
genes and increasing organizational complexity of metazoan genomes. Trends
in Genetics. Elsevier. https://doi.org/10.1016/j.tig.2008.08.003
chicago: Assis, Raquel, Alexey Kondrashov, Eugene Koonin, and Fyodor Kondrashov.
“Nested Genes and Increasing Organizational Complexity of Metazoan Genomes.” Trends
in Genetics. Elsevier, 2008. https://doi.org/10.1016/j.tig.2008.08.003.
ieee: R. Assis, A. Kondrashov, E. Koonin, and F. Kondrashov, “Nested genes and increasing
organizational complexity of metazoan genomes,” Trends in Genetics, vol.
24, no. 10. Elsevier, pp. 475–478, 2008.
ista: Assis R, Kondrashov A, Koonin E, Kondrashov F. 2008. Nested genes and increasing
organizational complexity of metazoan genomes. Trends in Genetics. 24(10), 475–478.
mla: Assis, Raquel, et al. “Nested Genes and Increasing Organizational Complexity
of Metazoan Genomes.” Trends in Genetics, vol. 24, no. 10, Elsevier, 2008,
pp. 475–78, doi:10.1016/j.tig.2008.08.003.
short: R. Assis, A. Kondrashov, E. Koonin, F. Kondrashov, Trends in Genetics 24
(2008) 475–478.
date_created: 2018-12-11T11:49:08Z
date_published: 2008-10-01T00:00:00Z
date_updated: 2021-01-12T08:21:49Z
day: '01'
doi: 10.1016/j.tig.2008.08.003
extern: 1
intvolume: ' 24'
issue: '10'
month: '10'
page: 475 - 478
publication: Trends in Genetics
publication_status: published
publisher: Elsevier
publist_id: '6743'
quality_controlled: 0
status: public
title: Nested genes and increasing organizational complexity of metazoan genomes
type: journal_article
volume: 24
year: '2008'
...
---
_id: '9457'
abstract:
- lang: eng
text: Eukaryotic chromatin is separated into functional domains differentiated by
posttranslational histone modifications, histone variants, and DNA methylation1–6.
Methylation is associated with repression of transcriptional initiation in plants
and animals, and is frequently found in transposable elements. Proper methylation
patterns are critical for eukaryotic development4,5, and aberrant methylation-induced
silencing of tumor suppressor genes is a common feature of human cancer7. In contrast
to methylation, the histone variant H2A.Z is preferentially deposited by the Swr1
ATPase complex near 5′ ends of genes where it promotes transcriptional competence8–20.
How DNA methylation and H2A.Z influence transcription remains largely unknown.
Here we show that in the plant Arabidopsis thaliana, regions of DNA methylation
are quantitatively deficient in H2A.Z. Exclusion of H2A.Z is seen at sites of
DNA methylation in the bodies of actively transcribed genes and in methylated
transposons. Mutation of the MET1 DNA methyltransferase, which causes both losses
and gains of DNA methylation4,5, engenders opposite changes in H2A.Z deposition,
while mutation of the PIE1 subunit of the Swr1 complex that deposits H2A.Z17 leads
to genome-wide hypermethylation. Our findings indicate that DNA methylation can
influence chromatin structure and effect gene silencing by excluding H2A.Z, and
that H2A.Z protects genes from DNA methylation.
article_processing_charge: No
article_type: letter_note
author:
- first_name: Daniel
full_name: Zilberman, Daniel
id: 6973db13-dd5f-11ea-814e-b3e5455e9ed1
last_name: Zilberman
orcid: 0000-0002-0123-8649
- first_name: Devin
full_name: Coleman-Derr, Devin
last_name: Coleman-Derr
- first_name: Tracy
full_name: Ballinger, Tracy
last_name: Ballinger
- first_name: Steven
full_name: Henikoff, Steven
last_name: Henikoff
citation:
ama: Zilberman D, Coleman-Derr D, Ballinger T, Henikoff S. Histone H2A.Z and DNA
methylation are mutually antagonistic chromatin marks. Nature. 2008;456(7218):125-129.
doi:10.1038/nature07324
apa: Zilberman, D., Coleman-Derr, D., Ballinger, T., & Henikoff, S. (2008).
Histone H2A.Z and DNA methylation are mutually antagonistic chromatin marks. Nature.
Springer Nature. https://doi.org/10.1038/nature07324
chicago: Zilberman, Daniel, Devin Coleman-Derr, Tracy Ballinger, and Steven Henikoff.
“Histone H2A.Z and DNA Methylation Are Mutually Antagonistic Chromatin Marks.”
Nature. Springer Nature, 2008. https://doi.org/10.1038/nature07324.
ieee: D. Zilberman, D. Coleman-Derr, T. Ballinger, and S. Henikoff, “Histone H2A.Z
and DNA methylation are mutually antagonistic chromatin marks,” Nature,
vol. 456, no. 7218. Springer Nature, pp. 125–129, 2008.
ista: Zilberman D, Coleman-Derr D, Ballinger T, Henikoff S. 2008. Histone H2A.Z
and DNA methylation are mutually antagonistic chromatin marks. Nature. 456(7218),
125–129.
mla: Zilberman, Daniel, et al. “Histone H2A.Z and DNA Methylation Are Mutually Antagonistic
Chromatin Marks.” Nature, vol. 456, no. 7218, Springer Nature, 2008, pp.
125–29, doi:10.1038/nature07324.
short: D. Zilberman, D. Coleman-Derr, T. Ballinger, S. Henikoff, Nature 456 (2008)
125–129.
date_created: 2021-06-04T11:49:32Z
date_published: 2008-11-06T00:00:00Z
date_updated: 2021-12-14T08:54:36Z
day: '06'
department:
- _id: DaZi
doi: 10.1038/nature07324
extern: '1'
external_id:
pmid:
- '18815594'
intvolume: ' 456'
issue: '7218'
keyword:
- Multidisciplinary
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2877514/
month: '11'
oa: 1
oa_version: Submitted Version
page: 125-129
pmid: 1
publication: Nature
publication_identifier:
eissn:
- 1476-4687
issn:
- 0028-0836
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Histone H2A.Z and DNA methylation are mutually antagonistic chromatin marks
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 456
year: '2008'
...
---
_id: '9537'
abstract:
- lang: eng
text: DNA methylation is an ancient process found in all domains of life. Although
the enzymes that mediate methylation have remained highly conserved, DNA methylation
has been adapted for a variety of uses throughout evolution, including defense
against transposable elements and control of gene expression. Defects in DNA methylation
are linked to human diseases, including cancer. Methylation has been lost several
times in the course of animal and fungal evolution, thus limiting the opportunity
for study in common model organisms. In the past decade, plants have emerged as
a premier model system for genetic dissection of DNA methylation. A recent combination
of plant genetics with powerful genomic approaches has led to a number of exciting
discoveries and promises many more.
article_processing_charge: No
article_type: review
author:
- first_name: Daniel
full_name: Zilberman, Daniel
id: 6973db13-dd5f-11ea-814e-b3e5455e9ed1
last_name: Zilberman
orcid: 0000-0002-0123-8649
citation:
ama: Zilberman D. The evolving functions of DNA methylation. Current Opinion
in Plant Biology. 2008;11(5):554-559. doi:10.1016/j.pbi.2008.07.004
apa: Zilberman, D. (2008). The evolving functions of DNA methylation. Current
Opinion in Plant Biology. Elsevier . https://doi.org/10.1016/j.pbi.2008.07.004
chicago: Zilberman, Daniel. “The Evolving Functions of DNA Methylation.” Current
Opinion in Plant Biology. Elsevier , 2008. https://doi.org/10.1016/j.pbi.2008.07.004.
ieee: D. Zilberman, “The evolving functions of DNA methylation,” Current Opinion
in Plant Biology, vol. 11, no. 5. Elsevier , pp. 554–559, 2008.
ista: Zilberman D. 2008. The evolving functions of DNA methylation. Current Opinion
in Plant Biology. 11(5), 554–559.
mla: Zilberman, Daniel. “The Evolving Functions of DNA Methylation.” Current
Opinion in Plant Biology, vol. 11, no. 5, Elsevier , 2008, pp. 554–59, doi:10.1016/j.pbi.2008.07.004.
short: D. Zilberman, Current Opinion in Plant Biology 11 (2008) 554–559.
date_created: 2021-06-08T13:13:37Z
date_published: 2008-10-01T00:00:00Z
date_updated: 2021-12-14T08:54:07Z
department:
- _id: DaZi
doi: 10.1016/j.pbi.2008.07.004
extern: '1'
external_id:
pmid:
- '18774331'
intvolume: ' 11'
issue: '5'
language:
- iso: eng
month: '10'
oa_version: None
page: 554-559
pmid: 1
publication: Current Opinion in Plant Biology
publication_identifier:
issn:
- 1369-5266
publication_status: published
publisher: 'Elsevier '
quality_controlled: '1'
scopus_import: '1'
status: public
title: The evolving functions of DNA methylation
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 11
year: '2008'
...
---
_id: '965'
abstract:
- lang: eng
text: We give many examples of applying Bogoliubov's forest formula to iterative
solutions of various nonlinear equations. The same formula describes an extremely
wide class of objects, from an ordinary quadratic equation to renormalization
in quantum field theory.
acknowledgement: |-
This work is supported in part by the Dynasty Foundation (M. N. S.), the
Russian Foundation for Basic Research (Grant No
s. 07-02-00878 and 07-02-00645), a joint grant (Grant
No. 06-01-92059-CE), the NWO (Project No. 047.011.2004.026), INTAS (Grant No. 05-1000008-7865), the
Program for Supporting Leading Scientific School
s (Grant No. NSh-8004.2006.2), and also by a project
(Project No. ANR-05-BLAN-0029-01, A. Yu. M.).
author:
- first_name: Alexei
full_name: Morozov, Alexei Y
last_name: Morozov
- first_name: Maksym
full_name: Maksym Serbyn
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
citation:
ama: Morozov A, Serbyn M. Nonlinear algebra and Bogoliubov’s recursion. Theoretical
and Mathematical Physics. 2008;154(2):270-293. doi:10.1007/s11232-008-0026-7
apa: Morozov, A., & Serbyn, M. (2008). Nonlinear algebra and Bogoliubov’s recursion.
Theoretical and Mathematical Physics. Elsevier. https://doi.org/10.1007/s11232-008-0026-7
chicago: Morozov, Alexei, and Maksym Serbyn. “Nonlinear Algebra and Bogoliubov’s
Recursion.” Theoretical and Mathematical Physics. Elsevier, 2008. https://doi.org/10.1007/s11232-008-0026-7.
ieee: A. Morozov and M. Serbyn, “Nonlinear algebra and Bogoliubov’s recursion,”
Theoretical and Mathematical Physics, vol. 154, no. 2. Elsevier, pp. 270–293,
2008.
ista: Morozov A, Serbyn M. 2008. Nonlinear algebra and Bogoliubov’s recursion. Theoretical
and Mathematical Physics. 154(2), 270–293.
mla: Morozov, Alexei, and Maksym Serbyn. “Nonlinear Algebra and Bogoliubov’s Recursion.”
Theoretical and Mathematical Physics, vol. 154, no. 2, Elsevier, 2008,
pp. 270–93, doi:10.1007/s11232-008-0026-7.
short: A. Morozov, M. Serbyn, Theoretical and Mathematical Physics 154 (2008) 270–293.
date_created: 2018-12-11T11:49:26Z
date_published: 2008-01-01T00:00:00Z
date_updated: 2021-01-12T08:22:17Z
day: '01'
doi: 10.1007/s11232-008-0026-7
extern: 1
intvolume: ' 154'
issue: '2'
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/hep-th/0703258
month: '01'
oa: 1
page: 270 - 293
publication: Theoretical and Mathematical Physics
publication_status: published
publisher: Elsevier
publist_id: '6437'
quality_controlled: 0
status: public
title: Nonlinear algebra and Bogoliubov's recursion
type: journal_article
volume: 154
year: '2008'
...
---
_id: '7320'
abstract:
- lang: eng
text: A comparative, experimental diffusivity study of gas diffusion layer (GDL)
materials for polymer electrolyte fuel cells (PEFC) is presented for the first
time. The GDL plays an important role for electrochemical losses due to gas transport
limitations at high current densities. Characterization and optimization of these
layers is therefore essential to improve power density. A recently developed method
which allows for fast diffusimetry is applied and data compared to the literature
values. Measurements are made as a function of direction and compression and the
effect of different binder structures and hydrophobic treatments on effective
diffusivities are discussed. A better understanding of the results is gained by
including novel GDL cross-section images and a meaningful unit cell model for
the interpretation of the data. The diffusivity data is valuable for GDL manufacturers
and future PEFC models. The study reveals that a binder–fiber ratio larger than
50% has a negative impact on the effective diffusion properties. The hydrophobic
treatment which is necessary to improve the water management can impede diffusion
and thus reduce the power density. Furthermore binder has an isotropic effect
while compression pronounces the in-plane orientation of the fibers.
article_processing_charge: No
article_type: original
author:
- first_name: Reto
full_name: Flückiger, Reto
last_name: Flückiger
- first_name: Stefan Alexander
full_name: Freunberger, Stefan Alexander
id: A8CA28E6-CE23-11E9-AD2D-EC27E6697425
last_name: Freunberger
orcid: 0000-0003-2902-5319
- first_name: Denis
full_name: Kramer, Denis
last_name: Kramer
- first_name: Alexander
full_name: Wokaun, Alexander
last_name: Wokaun
- first_name: Günther G.
full_name: Scherer, Günther G.
last_name: Scherer
- first_name: Felix N.
full_name: Büchi, Felix N.
last_name: Büchi
citation:
ama: Flückiger R, Freunberger SA, Kramer D, Wokaun A, Scherer GG, Büchi FN. Anisotropic,
effective diffusivity of porous gas diffusion layer materials for PEFC. Electrochimica
Acta. 2008;54(2):551-559. doi:10.1016/j.electacta.2008.07.034
apa: Flückiger, R., Freunberger, S. A., Kramer, D., Wokaun, A., Scherer, G. G.,
& Büchi, F. N. (2008). Anisotropic, effective diffusivity of porous gas diffusion
layer materials for PEFC. Electrochimica Acta. Elsevier. https://doi.org/10.1016/j.electacta.2008.07.034
chicago: Flückiger, Reto, Stefan Alexander Freunberger, Denis Kramer, Alexander
Wokaun, Günther G. Scherer, and Felix N. Büchi. “Anisotropic, Effective Diffusivity
of Porous Gas Diffusion Layer Materials for PEFC.” Electrochimica Acta.
Elsevier, 2008. https://doi.org/10.1016/j.electacta.2008.07.034.
ieee: R. Flückiger, S. A. Freunberger, D. Kramer, A. Wokaun, G. G. Scherer, and
F. N. Büchi, “Anisotropic, effective diffusivity of porous gas diffusion layer
materials for PEFC,” Electrochimica Acta, vol. 54, no. 2. Elsevier, pp.
551–559, 2008.
ista: Flückiger R, Freunberger SA, Kramer D, Wokaun A, Scherer GG, Büchi FN. 2008.
Anisotropic, effective diffusivity of porous gas diffusion layer materials for
PEFC. Electrochimica Acta. 54(2), 551–559.
mla: Flückiger, Reto, et al. “Anisotropic, Effective Diffusivity of Porous Gas Diffusion
Layer Materials for PEFC.” Electrochimica Acta, vol. 54, no. 2, Elsevier,
2008, pp. 551–59, doi:10.1016/j.electacta.2008.07.034.
short: R. Flückiger, S.A. Freunberger, D. Kramer, A. Wokaun, G.G. Scherer, F.N.
Büchi, Electrochimica Acta 54 (2008) 551–559.
date_created: 2020-01-15T12:21:36Z
date_published: 2008-12-30T00:00:00Z
date_updated: 2021-01-12T08:13:02Z
day: '30'
doi: 10.1016/j.electacta.2008.07.034
extern: '1'
intvolume: ' 54'
issue: '2'
language:
- iso: eng
month: '12'
oa_version: None
page: 551-559
publication: Electrochimica Acta
publication_identifier:
issn:
- 0013-4686
publication_status: published
publisher: Elsevier
quality_controlled: '1'
status: public
title: Anisotropic, effective diffusivity of porous gas diffusion layer materials
for PEFC
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 54
year: '2008'
...
---
_id: '7321'
abstract:
- lang: eng
text: Cell interaction phenomena in polymer electrolyte fuel cell stacks that arise
from imbalance between adjacent cells are investigated in detail experimentally
and theoretically. A specialized two-cell stack with advanced localized diagnostics
was developed and used to analyze the mechanism and effect of cell-to-cell coupling
as a result of operationally relevant variations in reactant feed flow. Contributions
to overall and local voltage changes with respect to uniformly operated cells
are scrutinized. Unequal operation of the cells causes in-plane current in the
bipolar plate to redistribute current and result in inhomogeneous polarization.
Both increasing and decreasing polarization along the air-flow path reduces cell
power as compared to isopotential operation. A two-dimensional model based on
a commercial computational fluid dynamics code is used to back and extend the
experimental results to more general cases. Furthermore, the experimental setup
presented allowed for the first time to perform simultaneous localized electrochemical
impedance spectroscopy beyond the single-cell level. The mechanism of mutual cell
interaction on local and integral spectra is revealed. Results show that virtually
identical operation of the cells is essential to obtain meaningful integral spectra.
article_number: B704
article_processing_charge: No
article_type: original
author:
- first_name: Stefan Alexander
full_name: Freunberger, Stefan Alexander
id: A8CA28E6-CE23-11E9-AD2D-EC27E6697425
last_name: Freunberger
orcid: 0000-0003-2902-5319
- first_name: Ingo A.
full_name: Schneider, Ingo A.
last_name: Schneider
- first_name: Pang-Chieh
full_name: Sui, Pang-Chieh
last_name: Sui
- first_name: Alexander
full_name: Wokaun, Alexander
last_name: Wokaun
- first_name: Nedjib
full_name: Djilali, Nedjib
last_name: Djilali
- first_name: Felix N.
full_name: Büchi, Felix N.
last_name: Büchi
citation:
ama: Freunberger SA, Schneider IA, Sui P-C, Wokaun A, Djilali N, Büchi FN. Cell
interaction phenomena in polymer electrolyte fuel cell stacks. Journal of The
Electrochemical Society. 2008;155(7). doi:10.1149/1.2913095
apa: Freunberger, S. A., Schneider, I. A., Sui, P.-C., Wokaun, A., Djilali, N.,
& Büchi, F. N. (2008). Cell interaction phenomena in polymer electrolyte
fuel cell stacks. Journal of The Electrochemical Society. The Electrochemical
Society. https://doi.org/10.1149/1.2913095
chicago: Freunberger, Stefan Alexander, Ingo A. Schneider, Pang-Chieh Sui, Alexander
Wokaun, Nedjib Djilali, and Felix N. Büchi. “Cell Interaction Phenomena in Polymer
Electrolyte Fuel Cell Stacks.” Journal of The Electrochemical Society.
The Electrochemical Society, 2008. https://doi.org/10.1149/1.2913095.
ieee: S. A. Freunberger, I. A. Schneider, P.-C. Sui, A. Wokaun, N. Djilali, and
F. N. Büchi, “Cell interaction phenomena in polymer electrolyte fuel cell stacks,”
Journal of The Electrochemical Society, vol. 155, no. 7. The Electrochemical
Society, 2008.
ista: Freunberger SA, Schneider IA, Sui P-C, Wokaun A, Djilali N, Büchi FN. 2008.
Cell interaction phenomena in polymer electrolyte fuel cell stacks. Journal of
The Electrochemical Society. 155(7), B704.
mla: Freunberger, Stefan Alexander, et al. “Cell Interaction Phenomena in Polymer
Electrolyte Fuel Cell Stacks.” Journal of The Electrochemical Society,
vol. 155, no. 7, B704, The Electrochemical Society, 2008, doi:10.1149/1.2913095.
short: S.A. Freunberger, I.A. Schneider, P.-C. Sui, A. Wokaun, N. Djilali, F.N.
Büchi, Journal of The Electrochemical Society 155 (2008).
date_created: 2020-01-15T12:21:47Z
date_published: 2008-05-08T00:00:00Z
date_updated: 2021-01-12T08:13:03Z
day: '08'
doi: 10.1149/1.2913095
extern: '1'
intvolume: ' 155'
issue: '7'
language:
- iso: eng
month: '05'
oa_version: None
publication: Journal of The Electrochemical Society
publication_identifier:
issn:
- 0013-4651
publication_status: published
publisher: The Electrochemical Society
quality_controlled: '1'
status: public
title: Cell interaction phenomena in polymer electrolyte fuel cell stacks
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 155
year: '2008'
...
---
_id: '7322'
abstract:
- lang: eng
text: The gas diffusion layers (GDLs) of a membrane electrode assembly (MEA) serve
as link between flow field and porous electrode within a polymer electrolyte fuel
cell. Beside ensuring sufficient electrical and thermal contact between the whole
electrode area and the flow field, these typically 200–400 μm thick porous structures
enable the access of educts to the electrode area which would be occluded by the
flow field lands if the flow field is directly attached to the electrode. Hence,
the characterisation of properties pertaining to mass transport of educts and
products through these structures is indispensable whilst examining the contribution
of the GDLs to the overall electrochemical characteristics of a MEA. A fast and
cost effective method to measure the effective diffusivity of a GDL is presented.
Electrochemical impedance spectroscopy is applied to measure the effective ionic
conductivity of an electrolyte-soaked GDL. Taking advantage of the analogy between
Ficks and Ohms law, this provides a measure for the effective diffusivity. The
method is described in detail, including experimental as well as theoretical aspects,
and selected results, highlighting the anisotropy and dependence on the degree
of compression, are shown. Moreover, a two-dimensional model consisting of regularly
spaced ellipses is developed to represent the porous structure of the GDL, and
by using conformal maps, the agreement between this model and experiment with
respect to the sensitivity of the effective diffusivity towards compression is
shown.
article_processing_charge: No
article_type: original
author:
- first_name: Denis
full_name: Kramer, Denis
last_name: Kramer
- first_name: Stefan Alexander
full_name: Freunberger, Stefan Alexander
id: A8CA28E6-CE23-11E9-AD2D-EC27E6697425
last_name: Freunberger
orcid: 0000-0003-2902-5319
- first_name: Reto
full_name: Flückiger, Reto
last_name: Flückiger
- first_name: Ingo A.
full_name: Schneider, Ingo A.
last_name: Schneider
- first_name: Alexander
full_name: Wokaun, Alexander
last_name: Wokaun
- first_name: Felix N.
full_name: Büchi, Felix N.
last_name: Büchi
- first_name: Günther G.
full_name: Scherer, Günther G.
last_name: Scherer
citation:
ama: Kramer D, Freunberger SA, Flückiger R, et al. Electrochemical diffusimetry
of fuel cell gas diffusion layers. Journal of Electroanalytical Chemistry.
2008;612(1):63-77. doi:10.1016/j.jelechem.2007.09.014
apa: Kramer, D., Freunberger, S. A., Flückiger, R., Schneider, I. A., Wokaun, A.,
Büchi, F. N., & Scherer, G. G. (2008). Electrochemical diffusimetry of fuel
cell gas diffusion layers. Journal of Electroanalytical Chemistry. Elsevier.
https://doi.org/10.1016/j.jelechem.2007.09.014
chicago: Kramer, Denis, Stefan Alexander Freunberger, Reto Flückiger, Ingo A. Schneider,
Alexander Wokaun, Felix N. Büchi, and Günther G. Scherer. “Electrochemical Diffusimetry
of Fuel Cell Gas Diffusion Layers.” Journal of Electroanalytical Chemistry.
Elsevier, 2008. https://doi.org/10.1016/j.jelechem.2007.09.014.
ieee: D. Kramer et al., “Electrochemical diffusimetry of fuel cell gas diffusion
layers,” Journal of Electroanalytical Chemistry, vol. 612, no. 1. Elsevier,
pp. 63–77, 2008.
ista: Kramer D, Freunberger SA, Flückiger R, Schneider IA, Wokaun A, Büchi FN, Scherer
GG. 2008. Electrochemical diffusimetry of fuel cell gas diffusion layers. Journal
of Electroanalytical Chemistry. 612(1), 63–77.
mla: Kramer, Denis, et al. “Electrochemical Diffusimetry of Fuel Cell Gas Diffusion
Layers.” Journal of Electroanalytical Chemistry, vol. 612, no. 1, Elsevier,
2008, pp. 63–77, doi:10.1016/j.jelechem.2007.09.014.
short: D. Kramer, S.A. Freunberger, R. Flückiger, I.A. Schneider, A. Wokaun, F.N.
Büchi, G.G. Scherer, Journal of Electroanalytical Chemistry 612 (2008) 63–77.
date_created: 2020-01-15T12:21:57Z
date_published: 2008-01-01T00:00:00Z
date_updated: 2021-01-12T08:13:03Z
day: '01'
doi: 10.1016/j.jelechem.2007.09.014
extern: '1'
intvolume: ' 612'
issue: '1'
language:
- iso: eng
month: '01'
oa_version: None
page: 63-77
publication: Journal of Electroanalytical Chemistry
publication_identifier:
issn:
- 1572-6657
publication_status: published
publisher: Elsevier
quality_controlled: '1'
status: public
title: Electrochemical diffusimetry of fuel cell gas diffusion layers
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 612
year: '2008'
...
---
_id: '7425'
abstract:
- lang: eng
text: The propagation of single cell performance losses to adjacent cells in a polymer
electrolyte fuel cell stack is studied by means of local current density measurements
in a two cell stack. In this stack, the working conditions of adjacent cells can
be controlled independently in order to deliberately change the performance of
one cell (inducing cell) and study the coupling effects to the adjacent cell (response
cell), while keeping the working conditions of the later one unchanged. The experiments
have shown that changes in the current density distribution caused by lowering
of the air stoichiometry in the inducing cell cause changes in the current density
distribution of the response cell in the order of 60% of the change of the inducing
cell, even when the air stoichiometry of the response cell is kept constant. The
losses in cell voltage of the inducing cell cause losses in cell voltage of the
response cell in a magnitude between 30 and 50%.
article_processing_charge: No
author:
- first_name: Marco
full_name: Santis, Marco
last_name: Santis
- first_name: Stefan Alexander
full_name: Freunberger, Stefan Alexander
id: A8CA28E6-CE23-11E9-AD2D-EC27E6697425
last_name: Freunberger
orcid: 0000-0003-2902-5319
- first_name: Matthias
full_name: Papra, Matthias
last_name: Papra
- first_name: Felix N.
full_name: Büchi, Felix N.
last_name: Büchi
citation:
ama: 'Santis M, Freunberger SA, Papra M, Büchi FN. Experimental investigation of
the propagation of local current density variations to adjacent cells in PEFC
stacks. In: 3rd International Conference on Fuel Cell Science, Engineering
and Technology. ASMEDC; 2008:763-765. doi:10.1115/fuelcell2005-74116'
apa: 'Santis, M., Freunberger, S. A., Papra, M., & Büchi, F. N. (2008). Experimental
investigation of the propagation of local current density variations to adjacent
cells in PEFC stacks. In 3rd International Conference on Fuel Cell Science,
Engineering and Technology (pp. 763–765). Ypsilanti, MI, United States: ASMEDC.
https://doi.org/10.1115/fuelcell2005-74116'
chicago: Santis, Marco, Stefan Alexander Freunberger, Matthias Papra, and Felix
N. Büchi. “Experimental Investigation of the Propagation of Local Current Density
Variations to Adjacent Cells in PEFC Stacks.” In 3rd International Conference
on Fuel Cell Science, Engineering and Technology, 763–65. ASMEDC, 2008. https://doi.org/10.1115/fuelcell2005-74116.
ieee: M. Santis, S. A. Freunberger, M. Papra, and F. N. Büchi, “Experimental investigation
of the propagation of local current density variations to adjacent cells in PEFC
stacks,” in 3rd International Conference on Fuel Cell Science, Engineering
and Technology, Ypsilanti, MI, United States, 2008, pp. 763–765.
ista: Santis M, Freunberger SA, Papra M, Büchi FN. 2008. Experimental investigation
of the propagation of local current density variations to adjacent cells in PEFC
stacks. 3rd International Conference on Fuel Cell Science, Engineering and Technology.
International conference on fuel cell science, engineering and technology, 763–765.
mla: Santis, Marco, et al. “Experimental Investigation of the Propagation of Local
Current Density Variations to Adjacent Cells in PEFC Stacks.” 3rd International
Conference on Fuel Cell Science, Engineering and Technology, ASMEDC, 2008,
pp. 763–65, doi:10.1115/fuelcell2005-74116.
short: M. Santis, S.A. Freunberger, M. Papra, F.N. Büchi, in:, 3rd International
Conference on Fuel Cell Science, Engineering and Technology, ASMEDC, 2008, pp.
763–765.
conference:
end_date: 2005-05-25
location: Ypsilanti, MI, United States
name: International conference on fuel cell science, engineering and technology
start_date: 2005-05-23
date_created: 2020-01-31T10:14:45Z
date_published: 2008-10-13T00:00:00Z
date_updated: 2021-01-12T08:13:33Z
day: '13'
doi: 10.1115/fuelcell2005-74116
extern: '1'
language:
- iso: eng
month: '10'
oa_version: None
page: 763-765
publication: 3rd International Conference on Fuel Cell Science, Engineering and Technology
publication_identifier:
isbn:
- '0791837645'
- '0791837572'
publication_status: published
publisher: ASMEDC
quality_controlled: '1'
status: public
title: Experimental investigation of the propagation of local current density variations
to adjacent cells in PEFC stacks
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2008'
...
---
_id: '753'
abstract:
- lang: eng
text: 'This paper addresses the following question: what is the minimum-sized synchronous
window needed to solve consensus in an otherwise asynchronous system? In answer
to this question, we present the first optimally-resilient algorithm ASAP that
solves consensus as soon as possible in an eventually synchronous system, i.e.,
a system that from some time GST onwards, delivers messages in a timely fashion.
ASAP guarantees that, in an execution with at most f failures, every process decides
no later than round GST + f + 2, which is optimal.'
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Dan-Adrian
full_name: Alistarh, Dan-Adrian
id: 4A899BFC-F248-11E8-B48F-1D18A9856A87
last_name: Alistarh
orcid: 0000-0003-3650-940X
- first_name: Seth
full_name: Gilbert, Seth
last_name: Gilbert
- first_name: Rachid
full_name: Guerraoui, Rachid
last_name: Guerraoui
- first_name: Corentin
full_name: Travers, Corentin
last_name: Travers
citation:
ama: 'Alistarh D-A, Gilbert S, Guerraoui R, Travers C. How to solve consensus in
the smallest window of synchrony. In: Vol 5218 LNCS. Springer; 2008:32-46. doi:10.1007/978-3-540-87779-0_3'
apa: 'Alistarh, D.-A., Gilbert, S., Guerraoui, R., & Travers, C. (2008). How
to solve consensus in the smallest window of synchrony (Vol. 5218 LNCS, pp. 32–46).
Presented at the DISC: Distributed Computing, Springer. https://doi.org/10.1007/978-3-540-87779-0_3'
chicago: Alistarh, Dan-Adrian, Seth Gilbert, Rachid Guerraoui, and Corentin Travers.
“How to Solve Consensus in the Smallest Window of Synchrony,” 5218 LNCS:32–46.
Springer, 2008. https://doi.org/10.1007/978-3-540-87779-0_3.
ieee: 'D.-A. Alistarh, S. Gilbert, R. Guerraoui, and C. Travers, “How to solve consensus
in the smallest window of synchrony,” presented at the DISC: Distributed Computing,
2008, vol. 5218 LNCS, pp. 32–46.'
ista: 'Alistarh D-A, Gilbert S, Guerraoui R, Travers C. 2008. How to solve consensus
in the smallest window of synchrony. DISC: Distributed Computing, LNCS, vol. 5218
LNCS, 32–46.'
mla: Alistarh, Dan-Adrian, et al. How to Solve Consensus in the Smallest Window
of Synchrony. Vol. 5218 LNCS, Springer, 2008, pp. 32–46, doi:10.1007/978-3-540-87779-0_3.
short: D.-A. Alistarh, S. Gilbert, R. Guerraoui, C. Travers, in:, Springer, 2008,
pp. 32–46.
conference:
name: 'DISC: Distributed Computing'
date_created: 2018-12-11T11:48:19Z
date_published: 2008-01-01T00:00:00Z
date_updated: 2023-02-23T13:10:13Z
day: '01'
doi: 10.1007/978-3-540-87779-0_3
extern: '1'
language:
- iso: eng
month: '01'
oa_version: None
page: 32 - 46
publication_status: published
publisher: Springer
publist_id: '6904'
status: public
title: How to solve consensus in the smallest window of synchrony
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 5218 LNCS
year: '2008'
...
---
OA_place: repository
OA_type: green
_id: '22049'
abstract:
- lang: eng
text: 'We consider the minimal mass m0 required for solutions to the mass-critical
nonlinear Schrödinger (NLS) equation iut + Δu = μ|u|^4/d u to blow up. If m0 is
finite, we show that there exists a minimal-mass solution blowing up (in the sense
of an infinite spacetime norm) in both time directions, whose orbit in is compact
after quotienting out by the symmetries of the equation. A similar result is obtained
for spherically symmetric solutions. Similar results were previously obtained
by Keraani, [Keraani S.: On the blow-up phenomenon of the critical nonlinear Schrödinger
equation. J. Funct. Anal. 235 (2006), 171–192], in dimensions 1, 2 and Begout
and Vargas, [Begout P., Vargas A.: Mass concentration phenomena for the L2-critical
nonlinear Schrödinger equation, preprint], in dimensions d ≥ 3 for the mass-critical
NLS and by Kenig and Merle, [Kenig C., Merle F.: Global well-posedness, scattering,
and blowup for the energy-critical, focusing, non-linear Schrödinger equation
in the radial case, preprint], in the energy-critical case. In a subsequent paper
we shall use this compactness result to establish global existence and scattering
in for the defocusing NLS in three and higher dimensions with spherically symmetric
data.'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Terence
full_name: Tao, Terence
last_name: Tao
- first_name: Monica
full_name: Visan, Monica
id: 056daca0-b8d1-11f0-964f-f91054abf8ca
last_name: Visan
- first_name: Xiaoyi
full_name: Zhang, Xiaoyi
last_name: Zhang
citation:
ama: Tao T, Vişan M, Zhang X. Minimal-mass blowup solutions of the mass-critical
NLS. Forum Mathematicum. 2008;20(5):881-919. doi:10.1515/forum.2008.042
apa: Tao, T., Vişan, M., & Zhang, X. (2008). Minimal-mass blowup solutions of
the mass-critical NLS. Forum Mathematicum. De Gruyter. https://doi.org/10.1515/forum.2008.042
chicago: Tao, Terence, Monica Vişan, and Xiaoyi Zhang. “Minimal-Mass Blowup Solutions
of the Mass-Critical NLS.” Forum Mathematicum. De Gruyter, 2008. https://doi.org/10.1515/forum.2008.042.
ieee: T. Tao, M. Vişan, and X. Zhang, “Minimal-mass blowup solutions of the mass-critical
NLS,” Forum Mathematicum, vol. 20, no. 5. De Gruyter, pp. 881–919, 2008.
ista: Tao T, Vişan M, Zhang X. 2008. Minimal-mass blowup solutions of the mass-critical
NLS. Forum Mathematicum. 20(5), 881–919.
mla: Tao, Terence, et al. “Minimal-Mass Blowup Solutions of the Mass-Critical NLS.”
Forum Mathematicum, vol. 20, no. 5, De Gruyter, 2008, pp. 881–919, doi:10.1515/forum.2008.042.
short: T. Tao, M. Vişan, X. Zhang, Forum Mathematicum 20 (2008) 881–919.
das_tickbox: '1'
date_created: 2026-06-19T07:53:12Z
date_published: 2008-11-03T00:00:00Z
date_updated: 2026-06-25T08:15:22Z
day: '03'
doi: 10.1515/forum.2008.042
extern: '1'
external_id:
arxiv:
- math/0609690
intvolume: ' 20'
issue: '5'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.math/0609690
mathsc:
- 35Q55
month: '11'
oa: 1
oa_version: Preprint
page: 881-919
publication: Forum Mathematicum
publication_identifier:
eissn:
- 1435-5337
issn:
- 0933-7741
publication_status: published
publisher: De Gruyter
quality_controlled: '1'
scopus_import: '1'
status: public
title: Minimal-mass blowup solutions of the mass-critical NLS
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 20
year: '2008'
...
---
OA_place: repository
OA_type: green
_id: '22081'
abstract:
- lang: eng
text: We consider the Cauchy problem for a family of semilinear defocusing Schrödinger
equations with monomial nonlinearities in one space dimension. We establish global
well-posedness and scattering. Our analysis is based on a four-particle interaction
Morawetz estimate giving a priori $L_{t,x}^8$ spacetime control on solutions.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: J.
full_name: Colliander, J.
last_name: Colliander
- first_name: Justin
full_name: Holmer, Justin
last_name: Holmer
- first_name: Monica
full_name: Visan, Monica
id: 056daca0-b8d1-11f0-964f-f91054abf8ca
last_name: Visan
- first_name: Xiaoyi
full_name: Zhang, Xiaoyi
last_name: Zhang
citation:
ama: Colliander J, Holmer J, Vişan M, Zhang X. Global existence and scattering for
rough solutions to generalized nonlinear Schrödinger equations on $R$. Communications
on Pure and Applied Analysis. 2008;7(3):467-489. doi:10.3934/cpaa.2008.7.467
apa: Colliander, J., Holmer, J., Vişan, M., & Zhang, X. (2008). Global existence
and scattering for rough solutions to generalized nonlinear Schrödinger equations
on $R$. Communications on Pure and Applied Analysis. American Institute
of Mathematical Sciences. https://doi.org/10.3934/cpaa.2008.7.467
chicago: Colliander, J., Justin Holmer, Monica Vişan, and Xiaoyi Zhang. “Global
Existence and Scattering for Rough Solutions to Generalized Nonlinear Schrödinger
Equations on $R$.” Communications on Pure and Applied Analysis. American
Institute of Mathematical Sciences, 2008. https://doi.org/10.3934/cpaa.2008.7.467.
ieee: J. Colliander, J. Holmer, M. Vişan, and X. Zhang, “Global existence and scattering
for rough solutions to generalized nonlinear Schrödinger equations on $R$,” Communications
on Pure and Applied Analysis, vol. 7, no. 3. American Institute of Mathematical
Sciences, pp. 467–489, 2008.
ista: Colliander J, Holmer J, Vişan M, Zhang X. 2008. Global existence and scattering
for rough solutions to generalized nonlinear Schrödinger equations on $R$. Communications
on Pure and Applied Analysis. 7(3), 467–489.
mla: Colliander, J., et al. “Global Existence and Scattering for Rough Solutions
to Generalized Nonlinear Schrödinger Equations on $R$.” Communications on Pure
and Applied Analysis, vol. 7, no. 3, American Institute of Mathematical Sciences,
2008, pp. 467–89, doi:10.3934/cpaa.2008.7.467.
short: J. Colliander, J. Holmer, M. Vişan, X. Zhang, Communications on Pure and
Applied Analysis 7 (2008) 467–489.
das_tickbox: '1'
date_created: 2026-06-19T08:27:11Z
date_published: 2008-03-01T00:00:00Z
date_updated: 2026-07-01T07:05:55Z
day: '01'
doi: 10.3934/cpaa.2008.7.467
extern: '1'
external_id:
arxiv:
- math/0612452
intvolume: ' 7'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.math/0612452
mathsc:
- 35Q55
month: '03'
oa: 1
oa_version: Preprint
page: 467-489
publication: Communications on Pure and Applied Analysis
publication_identifier:
eissn:
- 1553-5258
issn:
- 1534-0392
publication_status: published
publisher: American Institute of Mathematical Sciences
quality_controlled: '1'
scopus_import: '1'
status: public
title: Global existence and scattering for rough solutions to generalized nonlinear
Schrödinger equations on $R$
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 7
year: '2008'
...
---
OA_place: repository
OA_type: green
_id: '22082'
abstract:
- lang: eng
text: "We establish global well-posedness and scattering for solutions to the mass-critical
nonlinear Schrödinger equation (mathematical formular) for large spherically
symmetric L2/x(R^d) initial data in dimensions d >= 3.\r\nIn the focusing case
we require that the mass is strictly less than that of the ground state. As a
consequence, we obtain that in the focusing case, any spherically symmetric blowup
solution must concentrate at least the mass of the ground state at the blowup
time."
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Rowan
full_name: Killip, Rowan
last_name: Killip
- first_name: Monica
full_name: Visan, Monica
id: 056daca0-b8d1-11f0-964f-f91054abf8ca
last_name: Visan
- first_name: Xiaoyi
full_name: Zhang, Xiaoyi
last_name: Zhang
citation:
ama: Killip R, Vişan M, Zhang X. The mass-critical nonlinear Schrödinger equation
with radial data in dimensions three and higher. Analysis & PDE. 2008;1(2):229-266.
doi:10.2140/apde.2008.1.229
apa: Killip, R., Vişan, M., & Zhang, X. (2008). The mass-critical nonlinear
Schrödinger equation with radial data in dimensions three and higher. Analysis
& PDE. Mathematical Sciences Publishers. https://doi.org/10.2140/apde.2008.1.229
chicago: Killip, Rowan, Monica Vişan, and Xiaoyi Zhang. “The Mass-Critical Nonlinear
Schrödinger Equation with Radial Data in Dimensions Three and Higher.” Analysis
& PDE. Mathematical Sciences Publishers, 2008. https://doi.org/10.2140/apde.2008.1.229.
ieee: R. Killip, M. Vişan, and X. Zhang, “The mass-critical nonlinear Schrödinger
equation with radial data in dimensions three and higher,” Analysis & PDE,
vol. 1, no. 2. Mathematical Sciences Publishers, pp. 229–266, 2008.
ista: Killip R, Vişan M, Zhang X. 2008. The mass-critical nonlinear Schrödinger
equation with radial data in dimensions three and higher. Analysis & PDE.
1(2), 229–266.
mla: Killip, Rowan, et al. “The Mass-Critical Nonlinear Schrödinger Equation with
Radial Data in Dimensions Three and Higher.” Analysis & PDE, vol. 1,
no. 2, Mathematical Sciences Publishers, 2008, pp. 229–66, doi:10.2140/apde.2008.1.229.
short: R. Killip, M. Vişan, X. Zhang, Analysis & PDE 1 (2008) 229–266.
das_tickbox: '1'
date_created: 2026-06-19T08:27:33Z
date_published: 2008-06-01T00:00:00Z
date_updated: 2026-07-01T07:15:15Z
day: '01'
doi: 10.2140/apde.2008.1.229
extern: '1'
external_id:
arxiv:
- '0708.0849'
intvolume: ' 1'
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.0708.0849
month: '06'
oa: 1
oa_version: Preprint
page: 229-266
publication: Analysis & PDE
publication_identifier:
eissn:
- 1948-206X
issn:
- 2157-5045
publication_status: published
publisher: Mathematical Sciences Publishers
quality_controlled: '1'
scopus_import: '1'
status: public
title: The mass-critical nonlinear Schrödinger equation with radial data in dimensions
three and higher
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 1
year: '2008'
...
---
_id: '3504'
abstract:
- lang: eng
text: "Simulation and bisimulation metrics for stochastic systems provide a quantitative
gen- eralization of the classical simulation and bisimulation relations. These
metrics capture the similarity of states with respect to quantitative specifications
written in the quantitative μ-calculus and related probabilistic logics.\r\nWe
present algorithms for computing the metrics on Markov decision processes (MDPs),
turn- based stochastic games, and concurrent games. For turn-based games and MDPs,
we provide a polynomial-time algorithm based on linear programming for the computation
of the one-step metric distance between states. The algorithm improves on the
previously known exponential-time algo- rithm based on a reduction to the theory
of reals. We then present PSPACE algorithms for both the decision problem and
the problem of approximating the metric distance between two states, matching
the best known bound for Markov chains. For the bisimulation kernel of the metric,
which corresponds to probabilistic bisimulation, our algorithm works in time O(n4)
for both turn-based games and MDPs; improving the previously best known O(n9 ·
log(n)) time algorithm for MDPs. For a concurrent game G, we show that computing
the exact distance between states is at least as hard as computing the value of
concurrent reachability games and the square-root-sum problem in computational
geometry. We show that checking whether the metric distance is bounded by a rational
r, can be accomplished via a reduction to the theory of real closed fields, involving
a\r\nformula with three quantifier alternations, yielding O(|G|O(|G|5)) time complexity,
improving the previously known reduction with O(|G|O(|G|7)) time complexity. These
algorithms can be iterated\r\nto approximate the metrics using binary search."
acknowledgement: This research was supported in part by the NSF grants CCR-0132780
and CNS-0720884.
alternative_title:
- LIPIcs
author:
- first_name: Krishnendu
full_name: Chatterjee, Krishnendu
id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
last_name: Chatterjee
orcid: 0000-0002-4561-241X
- first_name: Luca
full_name: De Alfaro, Luca
last_name: De Alfaro
- first_name: Ritankar
full_name: Majumdar, Ritankar
last_name: Majumdar
- first_name: Vishwanath
full_name: Raman, Vishwanath
last_name: Raman
citation:
ama: 'Chatterjee K, De Alfaro L, Majumdar R, Raman V. Algorithms for game metrics.
In: Vol 2. Schloss Dagstuhl - Leibniz-Zentrum für Informatik; 2008:107-118. doi:10.4230/LIPIcs.FSTTCS.2008.1745'
apa: 'Chatterjee, K., De Alfaro, L., Majumdar, R., & Raman, V. (2008). Algorithms
for game metrics (Vol. 2, pp. 107–118). Presented at the FSTTCS: Foundations of
Software Technology and Theoretical Computer Science, Schloss Dagstuhl - Leibniz-Zentrum
für Informatik. https://doi.org/10.4230/LIPIcs.FSTTCS.2008.1745'
chicago: Chatterjee, Krishnendu, Luca De Alfaro, Ritankar Majumdar, and Vishwanath
Raman. “Algorithms for Game Metrics,” 2:107–18. Schloss Dagstuhl - Leibniz-Zentrum
für Informatik, 2008. https://doi.org/10.4230/LIPIcs.FSTTCS.2008.1745.
ieee: 'K. Chatterjee, L. De Alfaro, R. Majumdar, and V. Raman, “Algorithms for game
metrics,” presented at the FSTTCS: Foundations of Software Technology and Theoretical
Computer Science, 2008, vol. 2, pp. 107–118.'
ista: 'Chatterjee K, De Alfaro L, Majumdar R, Raman V. 2008. Algorithms for game
metrics. FSTTCS: Foundations of Software Technology and Theoretical Computer Science,
LIPIcs, vol. 2, 107–118.'
mla: Chatterjee, Krishnendu, et al. Algorithms for Game Metrics. Vol. 2,
Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2008, pp. 107–18, doi:10.4230/LIPIcs.FSTTCS.2008.1745.
short: K. Chatterjee, L. De Alfaro, R. Majumdar, V. Raman, in:, Schloss Dagstuhl
- Leibniz-Zentrum für Informatik, 2008, pp. 107–118.
conference:
name: 'FSTTCS: Foundations of Software Technology and Theoretical Computer Science'
date_created: 2018-12-11T12:03:40Z
date_published: 2008-12-05T00:00:00Z
date_updated: 2026-07-06T13:25:11Z
day: '05'
ddc:
- '000'
doi: 10.4230/LIPIcs.FSTTCS.2008.1745
extern: '1'
file:
- access_level: open_access
checksum: 0a447454a24e273f7ddf51dbfe47f877
content_type: application/pdf
creator: dernst
date_created: 2019-05-10T10:01:21Z
date_updated: 2020-07-14T12:46:12Z
file_id: '6398'
file_name: 2008_LIPIcs_Chatterjee.pdf
file_size: 442139
relation: main_file
file_date_updated: 2020-07-14T12:46:12Z
has_accepted_license: '1'
intvolume: ' 2'
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
page: 107 - 118
publication_status: published
publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik
publist_id: '2883'
quality_controlled: '1'
related_material:
record:
- id: '3868'
relation: later_version
status: public
status: public
title: Algorithms for game metrics
tmp:
image: /images/cc_by_nc_nd.png
legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
(CC BY-NC-ND 4.0)
short: CC BY-NC-ND (4.0)
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 2
year: '2008'
...
---
OA_place: repository
OA_type: green
_id: '3876'
abstract:
- lang: eng
text: We consider two-player games played in real time on game structures with clocks
and parity objectives. The games are concurrent in that at each turn, both players
independently propose a time delay and an action, and the action with the shorter
delay is chosen. To prevent a player from winning by blocking time, we restrict
each player to strategies that ensure that the player cannot be responsible for
causing a zeno run. First, we present an efficient reduction of these games to
turn-based (i.e., nonconcurrent) finite-state (i.e., untimed) parity games. The
states of the resulting game are pairs of clock regions of the original game.
Our reduction improves the best known complexity for solving timed parity games.
Moreover, the rich class of algorithms for classical parity games can now be applied
to timed parity games. Second, we consider two restricted classes of strategies
for the player that represents the controller in a real-time synthesis problem,
namely, limit-robust and bounded-robust strategies. Using a limit-robust strategy,
the controller cannot choose an exact real-valued time delay but must allow for
some nonzero jitter in each of its actions. If there is a given lower bound on
the jitter, then the strategy is bounded-robust. We show that exact strategies
are more powerful than limit-robust strategies, which are more powerful than bounded-robust
strategies for any bound. For both kinds of robust strategies, we present efficient
reductions to standard timed automaton games. These reductions provide algorithms
for the synthesis of robust real-time controllers.
acknowledgement: This research was supported in part by the NSF grants CCR-0132780,
CNS-0720884, and CCR-0225610, and by the European COMBEST project.
alternative_title:
- LNCS
article_processing_charge: No
arxiv: 1
author:
- first_name: Krishnendu
full_name: Chatterjee, Krishnendu
id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
last_name: Chatterjee
orcid: 0000-0002-4561-241X
- 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: Vinayak
full_name: Prabhu, Vinayak
last_name: Prabhu
citation:
ama: 'Chatterjee K, Henzinger TA, Prabhu V. Timed parity games: complexity and robustness.
In: Proceedings of the 6th International Conference on Formal Modeling and
Analysis of Timed Systems. Vol 5215. Springer Nature; 2008:124-140. doi:10.1007/978-3-540-85778-5_10'
apa: 'Chatterjee, K., Henzinger, T. A., & Prabhu, V. (2008). Timed parity games:
complexity and robustness. In Proceedings of the 6th international conference
on Formal Modeling and Analysis of Timed Systems (Vol. 5215, pp. 124–140).
Saint Malo, France: Springer Nature. https://doi.org/10.1007/978-3-540-85778-5_10'
chicago: 'Chatterjee, Krishnendu, Thomas A Henzinger, and Vinayak Prabhu. “Timed
Parity Games: Complexity and Robustness.” In Proceedings of the 6th International
Conference on Formal Modeling and Analysis of Timed Systems, 5215:124–40.
Springer Nature, 2008. https://doi.org/10.1007/978-3-540-85778-5_10.'
ieee: 'K. Chatterjee, T. A. Henzinger, and V. Prabhu, “Timed parity games: complexity
and robustness,” in Proceedings of the 6th international conference on Formal
Modeling and Analysis of Timed Systems, Saint Malo, France, 2008, vol. 5215,
pp. 124–140.'
ista: 'Chatterjee K, Henzinger TA, Prabhu V. 2008. Timed parity games: complexity
and robustness. Proceedings of the 6th international conference on Formal Modeling
and Analysis of Timed Systems. FORMATS: Formal Modeling and Analysis of Timed
Systems, LNCS, vol. 5215, 124–140.'
mla: 'Chatterjee, Krishnendu, et al. “Timed Parity Games: Complexity and Robustness.”
Proceedings of the 6th International Conference on Formal Modeling and Analysis
of Timed Systems, vol. 5215, Springer Nature, 2008, pp. 124–40, doi:10.1007/978-3-540-85778-5_10.'
short: K. Chatterjee, T.A. Henzinger, V. Prabhu, in:, Proceedings of the 6th International
Conference on Formal Modeling and Analysis of Timed Systems, Springer Nature,
2008, pp. 124–140.
conference:
end_date: 2008-09-17
location: Saint Malo, France
name: 'FORMATS: Formal Modeling and Analysis of Timed Systems'
start_date: 2008-09-15
date_created: 2018-12-11T12:05:39Z
date_published: 2008-10-01T00:00:00Z
date_updated: 2026-07-06T13:25:38Z
day: '01'
doi: 10.1007/978-3-540-85778-5_10
extern: '1'
external_id:
arxiv:
- '0807.1165'
intvolume: ' 5215'
language:
- iso: eng
month: '10'
oa_version: None
page: 124 - 140
publication: Proceedings of the 6th international conference on Formal Modeling and
Analysis of Timed Systems
publication_identifier:
eissn:
- 1611-3349
isbn:
- '9783540857778'
issn:
- 0302-9743
publication_status: published
publisher: Springer Nature
publist_id: '2294'
related_material:
record:
- id: '3315'
relation: later_version
status: public
status: public
title: 'Timed parity games: complexity and robustness'
type: conference
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 5215
year: '2008'
...