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 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...

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...

Urban systems are becoming increasingly complex as urban economies, social and political structures and norms, infrastructure systems and technologies evolve. Therefore, the development of operational urban simulation models is required in order to achieve an improvement of the quality of...

În cuprinsul prezentei lucrări sunt examinate valenţele indicatorului “coeficientul de determinare standardizat”, propus de autor, pentru cuantificarea eficienţei utilizării variabilelor explicative şi a ierarhizării condiţiilor care trebuie îndeplinite în cazul unor teste...