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Institution

University of Zurich

EducationZurich, Switzerland
About: University of Zurich is a education organization based out in Zurich, Switzerland. It is known for research contribution in the topics: Population & Transplantation. The organization has 50842 authors who have published 124042 publications receiving 5304521 citations. The organization is also known as: UZH & Uni Zurich.


Papers
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Journal ArticleDOI
Albert M. Sirunyan, Armen Tumasyan, Wolfgang Adam1, Ece Aşılar1  +2212 moreInstitutions (157)
TL;DR: A fully-fledged particle-flow reconstruction algorithm tuned to the CMS detector was developed and has been consistently used in physics analyses for the first time at a hadron collider as mentioned in this paper.
Abstract: The CMS apparatus was identified, a few years before the start of the LHC operation at CERN, to feature properties well suited to particle-flow (PF) reconstruction: a highly-segmented tracker, a fine-grained electromagnetic calorimeter, a hermetic hadron calorimeter, a strong magnetic field, and an excellent muon spectrometer. A fully-fledged PF reconstruction algorithm tuned to the CMS detector was therefore developed and has been consistently used in physics analyses for the first time at a hadron collider. For each collision, the comprehensive list of final-state particles identified and reconstructed by the algorithm provides a global event description that leads to unprecedented CMS performance for jet and hadronic τ decay reconstruction, missing transverse momentum determination, and electron and muon identification. This approach also allows particles from pileup interactions to be identified and enables efficient pileup mitigation methods. The data collected by CMS at a centre-of-mass energy of 8\TeV show excellent agreement with the simulation and confirm the superior PF performance at least up to an average of 20 pileup interactions.

719 citations

Journal ArticleDOI
TL;DR: The authors argue that distrusting public laws risk destroying the positive attitude of citizens and politicians towards the state, and that a viable constitution must therefore be strict enough to deter exploitative behaviour.
Abstract: When discussing constitutional design, economists concentrate on the propensity of individuals to free ride. Preventing opportunistic behaviour by knaves has costs by crowding out civic virtue. Another view emphasises active citizen participation in order to bolster civic virtue. A viable constitution must therefore be strict enough to deter exploitative behaviour. At the same time, the constitution should fundamentally convey trust towards its citizens and politicians. Distrusting public laws risk destroying the positive attitude of citizens and politicians towards the state. Civic virtue can be maintained and fostered by direct citizen participation via popular referenda and initiatives.

718 citations

Proceedings ArticleDOI
28 Jul 2019
TL;DR: It is found that the most important and confident heads play consistent and often linguistically-interpretable roles and when pruning heads using a method based on stochastic gates and a differentiable relaxation of the L0 penalty, it is observed that specialized heads are last to be pruned.
Abstract: Multi-head self-attention is a key component of the Transformer, a state-of-the-art architecture for neural machine translation. In this work we evaluate the contribution made by individual attention heads to the overall performance of the model and analyze the roles played by them in the encoder. We find that the most important and confident heads play consistent and often linguistically-interpretable roles. When pruning heads using a method based on stochastic gates and a differentiable relaxation of the L0 penalty, we observe that specialized heads are last to be pruned. Our novel pruning method removes the vast majority of heads without seriously affecting performance. For example, on the English-Russian WMT dataset, pruning 38 out of 48 encoder heads results in a drop of only 0.15 BLEU.

718 citations

Journal ArticleDOI
18 Nov 2010-Nature
TL;DR: It is demonstrated that a West Nile virus mutant that lacks 2′-O MTase activity was attenuated in wild-type primary cells and mice but was pathogenic in the absence of type I interferon (IFN) signalling, and suggested an evolutionary explanation for 2-O methylation of cellular mRNA: to distinguish self from non-self RNA.
Abstract: Cellular messenger RNA (mRNA) of higher eukaryotes and many viral RNAs are methylated at the N-7 and 2'-O positions of the 5' guanosine cap by specific nuclear and cytoplasmic methyltransferases (MTases), respectively. Whereas N-7 methylation is essential for RNA translation and stability, the function of 2'-O methylation has remained uncertain since its discovery 35 years ago. Here we show that a West Nile virus (WNV) mutant (E218A) that lacks 2'-O MTase activity was attenuated in wild-type primary cells and mice but was pathogenic in the absence of type I interferon (IFN) signalling. 2'-O methylation of viral RNA did not affect IFN induction in WNV-infected fibroblasts but instead modulated the antiviral effects of IFN-induced proteins with tetratricopeptide repeats (IFIT), which are interferon-stimulated genes (ISGs) implicated in regulation of protein translation. Poxvirus and coronavirus mutants that lacked 2'-O MTase activity similarly showed enhanced sensitivity to the antiviral actions of IFN and, specifically, IFIT proteins. Our results demonstrate that the 2'-O methylation of the 5' cap of viral RNA functions to subvert innate host antiviral responses through escape of IFIT-mediated suppression, and suggest an evolutionary explanation for 2'-O methylation of cellular mRNA: to distinguish self from non-self RNA. Differential methylation of cytoplasmic RNA probably serves as an example for pattern recognition and restriction of propagation of foreign viral RNA in host cells.

718 citations

Journal ArticleDOI
TL;DR: The pre-print version of the Published Article can be accessed from the link below - Copyright @ 2010 Springer Verlag as discussed by the authors, which can be viewed as a preprint of the published article.
Abstract: This is the pre-print version of the Published Article, which can be accessed from the link below - Copyright @ 2010 Springer Verlag

717 citations


Authors

Showing all 51384 results

NameH-indexPapersCitations
Richard A. Flavell2311328205119
Peer Bork206697245427
Thomas C. Südhof191653118007
Stuart H. Orkin186715112182
Ruedi Aebersold182879141881
Tadamitsu Kishimoto1811067130860
Stanley B. Prusiner16874597528
Yang Yang1642704144071
Tomas Hökfelt158103395979
Dan R. Littman157426107164
Hans Lassmann15572479933
Matthias Egger152901184176
Lorenzo Bianchini1521516106970
Robert M. Strieter15161273040
Ashok Kumar1515654164086
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
2023265
20221,039
20218,997
20208,398
20197,336
20186,832