Romanian Abstract: Complexitatea procesului de frezare necesită o cunoaştere cât mai aprofundată şi modelarea fenomenelor existente în timpul aşchierii. Se dovedeşte indispensabilă dezvoltarea unor modele de aşchiere care au în vedere caracterul tridimensional al procesului de...

Romanian Abstract: Datorită simplităţii, extrapolările trendurilor sunt adeseori preferate în prognoza economică. Această lucrare include exemple de extrapolare a trendurilor liniare şi quadratice. Sunt prezentaţi, de asemenea, câţiva indicatori ai acurateţei previziunii

The paper aims to evaluate the opportunity of using mathematic estimation models within economic discounting computation. Several approximation models from the numerical methods theory will be considered in order to determine the evolution trend for investment projects’ economic indicators....

In the Lagrangian approach to the turbulent diffusion the species concentrations are described relative to the moving fluid. This approach is concerned with the behavior of the fluid particle existing in a carrying turbulent fluid. Lagrangian theory describes the statistics of the pollutant...

During the decision process, one has to take into consideration more than one criterion, the alternative that meets as many criteria as possible being chosen eventually. As it is impossible to reach the maximum level that is wished for separately for each criterion at the same time, one has to...

The scope of this article is to present how the Romania’s counties evolved, relying on certain main indicators meant to find the level of cultural, social and economic development for the period 2004-2007. As three aspects considered as “hidden” factors are to be analyzed by several...