We discuss how the multi-Regge factorisation of QCD amplitudes can be used in the study of multi-jet processes at colliders. We describe how the next-to-leading logarithmic (NLL) BFKL evolution can be combined with energy and momentum conservation. By recalculating the quark contribution to the next-to-leading logarithmic corrections to the BFKL kernel we can study several properties of the NLL...

résumé – Modèle de puissance vs. logarithmique de la loi de Fitts : une analyse mathématique. Après bientôt soixante années d’études, il reste toujours à déterminer si la loi de Fitts, un modèle célèbre du mouvement de pointage humain, est une loi logarithmique ou de puissance. Dans deux articles abondamment cités, Meyer & al. ont avancé l’idée que le modèle de puissance qu’ils ont déduit de le...

Some physical parameters, that are positive by definition, appear often as reciprocal pairs, like an electrical resistivity ρ and the electrical conductivity σ = 1/ρ , or a frequency ν and the period T = 1/ν . Theoretical arguments suggest that behind these pairs there are more natural parameters: their logarithms. This paper suggests a terminology that could bring those logarithmic units into ...

The paper investigates the properties of a class of resource allocation algorithms for communication networks: if a node of this network has x requests to transmit, then it receives a fraction of the capacity proportional to log(1+x), the logarithm of its current load. A detailed fluid scaling analysis of such a network with two nodes is presented. It is shown that the interaction of several ti...

The paper investigates the properties of a class of resource allocation algorithms for communication networks: if a node of this network has x requests to transmit, then it receives a fraction of the capacity proportional to log(1+L), the logarithm of its current load L. A stochastic model of such an algorithm is investigated in the case of the star network, in which J nodes can transmit simult...

With the rapid development of economy, investment has become a hot word. Many people hope to find an method make profits. methods such as stocks, wealth management and funds have emerged. In process investment, forecasting trend products is one most important links. This paper analyzes time series APPLE, AMERICAN AIRLINES AMD based on ARMA-GARCH model, evaluates model according AIC, BIC, HQIC o...