scholarly journals Collective Effect Studies of a Beta Beam Decay Ring

2011 ◽  
Author(s):  
C. Hansen ◽  
G. Rumolo ◽  
B. S. Acharya ◽  
Maury Goodman ◽  
Naba K. Mondal
Keyword(s):  
Entropy ◽  
2021 ◽  
Vol 23 (2) ◽  
pp. 155
Author(s):  
Bruno Cessac ◽  
Ignacio Ampuero ◽  
Rodrigo Cofré

We establish a general linear response relation for spiking neuronal networks, based on chains with unbounded memory. This relation allow us to predict the influence of a weak amplitude time dependent external stimuli on spatio-temporal spike correlations, from the spontaneous statistics (without stimulus) in a general context where the memory in spike dynamics can extend arbitrarily far in the past. Using this approach, we show how the linear response is explicitly related to the collective effect of the stimuli, intrinsic neuronal dynamics, and network connectivity on spike train statistics. We illustrate our results with numerical simulations performed over a discrete time integrate and fire model.


2009 ◽  
Vol 2009 (05) ◽  
pp. 005-005
Author(s):  
A. B Balantekin ◽  
İ Šahin ◽  
B Šahin
Keyword(s):  

1980 ◽  
Vol 50 (1) ◽  
pp. 255-262 ◽  
Author(s):  
Willard L. Brigner

In accounting for illusions of direction, many current models assume lateral inhibition among orientation detectors; however, that assumption is unnecessary. Rather, the illusions can be predicted by a model based on the pattern of inhibition and excitation across orientation detectors as caused by a single stimulus line. From the collective effects of multiple stimulus lines, a pattern of excitation and inhibition results which is perceived as an illusion of direction. This collective effect is predicted by convoluting a function representing physical orientation of stimulus lines with a function representing the pattern of inhibition and excitation elicited by a single line. Both perceived angle-expansion (repulsion) and perceived angle-contraction (attraction) are generated by the model.


Anemia ◽  
2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Vrushali A. Pathak ◽  
Kanjaksha Ghosh

Anemia is the primary clinical manifestation of malarial infections and is responsible for the substantial rate of morbidity. The pathophysiology discussed till now catalogued several causes for malarial anemia among which ineffective erythropoiesis being remarkable one occurs silently in the bone marrow. A systematic literature search was performed and summarized information on erythropoietic response upon malaria infection and the factors responsible for the same. This review summarizes the clinical and experimental studies on patients, mouse models, and in vitro cell cultures reporting erythropoietic changes upon malaria infection as well as factors accountable for the same. Inadequate erythropoietic response during malaria infection may be the collective effect of various mediators generated by host immune response as well as parasite metabolites. The interplay between various modulators causing the pathophysiology needs to be explored further. Globin gene expression profiling upon malaria infection should also be looked into as abnormal production of globin chains could be a possible contributor to ineffective erythropoiesis.


2004 ◽  
Author(s):  
C. ALBRIGHT ◽  
J.S. BERG ◽  
R. FERNOW ◽  
J. GALLARDO ◽  
S. KAHN ◽  
...  
Keyword(s):  

2009 ◽  
Author(s):  
Enrique Fernandez Martinez
Keyword(s):  

2008 ◽  
Author(s):  
S. Hancock ◽  
Osamu Yasuda ◽  
Naba Mondal ◽  
Chihiro Ohmori

2007 ◽  
Author(s):  
Sanjib Kumar Agarwalla ◽  
Sandhya Choubey ◽  
Amitava Raychaudhuri ◽  
Aalok Misra
Keyword(s):  

2009 ◽  
Vol 168 (2) ◽  
pp. 462-466
Author(s):  
Stefania Trovati ◽  
Matteo Magistris ◽  
Marco Silari

2009 ◽  
Vol 64 (1-2) ◽  
pp. 49-53
Author(s):  
Hwa-Min Kim ◽  
Young-Dae Jung

The collective effects on the transition bremsstrahlung spectrum due to the polarization interaction between the electron and Debye shielding cloud of an ion are investigated in nonideal plasmas. The impact parameter analysis with the effective pseudopotential model taking into account the nonideal collective and plasma screening effects is applied to obtain the bremsstrahlung radiation cross-section as a function of the nonideality plasma parameter, Debye length, photon energy, and projectile energy. It is shown that the collective effects enhance the bremsstrahlung radiation cross-section and decrease with increasing impact parameter. It is also shown that the collective effect is the most significant near the maximum position of the bremsstrahlung cross-section. In addition, it is shown that the collective effect decreases with an increase of the radiation photon energy


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