née dans les années soixante, la sociocritique cherche à faire sortir le réel social à travers le texte littéraire. de nombreuses perspectives ont été ouvertes par des sociocritiques, parmi lesquelles, celle de duchet semble la plus textuelle. pour lui, la sociocritique est plutôt une analyse socio-sémiotique du texte littéraire. la littérature contemporaine d’iran, influencée par les changemen...

The first geometric-arithmetic index was introduced in the chemical theory as the summation of 2 du dv /(du  dv ) overall edges of the graph, where du stand for the degree of the vertex u. In this paper we give the expressions for computing the first geometric-arithmetic index of hexagonal systems and phenylenes and present new method for describing hexagonal system by corresponding a simple g...

This paper describes the extensions we have added to our special-purpose objectoriented continous simulation language (OOCSMP) to solve partial differential equations. We also describe the procedure we have used to generate semiautomatically a web description of the numerical resolution of partial differential equations. INTRODUCTION The currently most successful hypermedia system is the World ...

Identifying the effect of differential taxation on portfolio allocation requires exogenous variation in marginal tax rates. Marginal tax rates vary with income, but income surely affects portfolio choice directly. In systems of individual taxation – like Canada’s – couples with the same household income can face different effective tax rates on capital income when labor income is distributed di...

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We define the principal matrix solution Z(t, s) of the linear Volterra vector integro-differential equation x (t) = A(t)x(t) + t s B(t, u)x(u) du in the same way that it is defined for x = A(t)x and prove that it is the unique matrix solution of ∂ ∂t Z(t, s) = A(t)Z(t, s) + t s B(t, u)Z(u, s) du, Z(s, s) = I. Furthermore, we prove that the solution of x (t) = A(t)x(t) + t τ B(t, u)x(u) du + f (...