ANOVA în cercetrările de marketing

In order to make an analysis of the variation regarding ANOVA, we considered the commercial society S.C. RUCOM S.A. from Craiova, Dolj, 107 Caracal Street, dealer in the sale of cars mark Opel, even from 2002. Starting with 2004, S.C. RUCOM S.A. becomes dealer for cars mark Chevrolet too, cars that first appear on the market in Oltenia that year, being, as a matter of fact, not that known on the Romanian market, in general. The Chevrolet cars, being them from the variety Kalos, Lacetti or Evanda, but especially the ones from the variety Kalos, present a few attractive characteristics for the potential clients. Thus, in the first place, the Chevrolet Kalos cars are more convenient, more advantageous, from more points of view, than many of the cars that presently exist on the market. Secondly, being produced by a firm famous for the quality of its products, respectively General Motors, the quality of the Chevrolet cars is at least as high as the one of other foreign cars that are presently sold on the market. Thirdly, the sale price of these cars is lower or, at most, equal to the one of similar cars.ANOVA, Market cars research, Snedecor test

Sondajul statistic în turism

The statistical survey has a broad area of application in the sphere of tourism. It represents the statistical method of establishment, based on the sampler, on the opinions of different socio-professional categories, with the purpose of anticipating the behavior of the collectivity’s members. The essential idea of the survey is that, at the basis of every person’s opinions and behavior, stands a general system of references and meanings. Therefore, the individual, subjective opinions present an objective significance that can be generalized and measured. The survey can be applied in the study of the touristical demand, in the researches that are made in order to get to know the tourists’ requests and motivations.Statistical survey, stratified survey, questionnaire,

ON THE SUMATORY FUNCTION ASSOCIATED TO THE SMARANDACHE FUNCTION

It is sald that for every numerical function f it can be attached the sumatory function

Topological thermoelectric effects in spin-orbit coupled electron and hole doped semiconductors

We compute the intrinsic contributions to the Berry-phase mediated anomalous Hall and Nernst effects in electron- and hole-doped semiconductors in the presence of an in-plane magnetic field as well as Rashba and Dresselhaus spin orbit couplings. For both systems we find that the regime of chemical potential which supports the topological superconducting state in the presence of superconducting proximity effect can be characterized by plateaus in the topological Hall and Nernst coefficients flanked by well-defined peaks marking the emergence of the topological regime. The plateaus arise from a clear momentum space separation between the region where the Berry curvature is peaked (at the `near-band-degeneracy' points) and the region where the single (or odd number of) Fermi surface lies in the Brillouin zone. The plateau for the Nernst coefficient is at vanishing magnitudes surrounded by two peaks of opposite signs as a function of the chemical potential. These results could be useful for experimentally deducing the chemical potential regime suitable for realizing topological states in the presence of proximity effect.Comment: 8 pages, 8 figure