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2021 ◽  
pp. 1-19
Author(s):  
Michael Golosovsky ◽  
Vincent Larivière

Abstract We study citation dynamics of the papers published in three scientific disciplines (Physics, Economics, and Mathematics) and four broad scientific categories (Medical, Natural, Social Sciences, and Arts & Humanities). We measure the uncitedness ratio, namely, the fraction of uncited papers in these datasets and its dependence on the time following publication. These measurements are compared with the model of citation dynamics which considers acquiring citations as an inhomogeneous Poisson process. The model captures the fraction of uncited papers in our collections fairly well, suggesting that uncitedness is an inevitable consequence of the Poisson statistics. Peer Review https://publons.com/publon/10.1162/qss_a_00142


2021 ◽  
Vol 103 (4) ◽  
Author(s):  
J. L. López-González ◽  
J. A. Franco-Villafañe ◽  
R. A. Méndez-Sánchez ◽  
G. Zavala-Vivar ◽  
E. Flores-Olmedo ◽  
...  

eLife ◽  
2021 ◽  
Vol 10 ◽  
Author(s):  
Cassandra L Hays ◽  
Asia L Sladek ◽  
Greg D Field ◽  
Wallace B Thoreson

Vision under starlight requires rod photoreceptors transduce and transmit single photon responses to the visual system. Small single photon voltage changes must therefore cause detectable reductions in glutamate release. We found that rods achieve this by employing mechanisms that enhance release regularity and its sensitivity to small voltage changes. At the resting membrane potential in darkness, mouse rods exhibit coordinated and regularly timed multivesicular release events, each consisting of ~17 vesicles and occurring 2-3 times more regularly than predicted by Poisson statistics. Hyperpolarizing rods to mimic the voltage change produced by a single photon abruptly reduced the probability of multivesicular release nearly to zero with a rebound increase at stimulus offset. Simulations of these release dynamics indicate that this regularly timed, multivesicular release promotes transmission of single photon responses to post-synaptic rod bipolar cells. Furthermore, the mechanism is efficient, requiring lower overall release rates than uniquantal release governed by Poisson statistics.


2020 ◽  
Vol 45 (11) ◽  
pp. 3009
Author(s):  
Jacob Rabinowitz ◽  
Mohsen Rezaei ◽  
Min-Su Park ◽  
Chee Leong Tan ◽  
Melville Ulmer ◽  
...  

2020 ◽  
Vol 51 (3) ◽  
pp. 881
Author(s):  
W. Pereira ◽  
A. Kowalska ◽  
K. Czerski ◽  
E. Nasonova ◽  
P. Kustalo ◽  
...  

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