| Two natural deenitions of bi-harmonic functions on countable groups are shown to essentially coincide. Criteria of absence of non-constant bounded bi-harmonic functions are formulated. A description of these functions for free groups is given. Fonctions bi-harmoniques sur les groupes R esum e R esum e | Nous montrons l' equivalence essentielle de deux d eenitions naturelles des fonctions bi-h...

organophosphorous (op) pesticides are used frequently in agriculture, particularly in asian countries over the past decades. poisoning by these agents, either as acute or chronic in these nations, is a serious health problem. op pesticides residue in fruits and vegetables that may not induce early clinical features, could also affect the human health. therefore, medical and health professionals...

Pendant Les annees dernieres la Pollution de l, athmosphere des salles d, Operation Par les anesthesiques volatils et Gazeux est bien etu­diee et la consequence Pathologique de cette Pollution est certaine; c, est Poruquois nous som­mes obliges de diminuer cette Pollution et em­pecher de se repandre ces agents dans les salles d, Operation. 

The linkages between inflation and the economy’s cyclical position are thought to be strongly affected by the credibility of monetary authorities. The author complements existing research by estimating a small forward-looking model of the U.S. economy with endogenous central bank credibility. His work differs from the existing literature in several ways. First, he endogenizes and estimates cred...

The concept of classical f -divergences gives a unified framework to construct and study measures of dissimilarity of probability distributions; special cases include the relative entropy and the Rényi divergences. Various quantum versions of this concept, and more narrowly, the concept of Rényi divergences, have been introduced in the literature with applications in quantum information theory;...

THE MEDICAL and surgical scenes depicted by Netherlandish artists of the sixteenth and seventeenth centuries have attracted the admiring attention of historians of medicine to such a degree that almost no book on "art and medicine" omits such paintings as Jan Steen's A love-sick (or pregnant) girl visited by a physician (several versions) or Gerrit Dou's Quacksalver (Rotterdam, Boymans-van Beun...

R esum e : Les applications r eelles utilisent des structures de donn ees classiques telles que des matrices, mais fournissent la plupart du temps une impl ementation sp eciique au probl eme, comme Compressed Sparse Column (CSC) { voir par exemple SPARSKITT17]. Ceci est en particulier vrai quand on travaille avec de grandes structures de donn ees creuses, comme des matrices provenant du domaine...