Gherasim, Adrian

ofre et demande ventes consum comparaison transport de voyageurs statistical data clientela surveys circulatie circulatie rutiera measurement enquetes facteurs de production decision making comportement du consommateur internationalizare efficacite clienti road traffic advertising depenses risk production factors rentabilitate customers observation enterprises transporturi manuale consumption statistical method railway traffic cerere si oferta evaluation economique date statistice controle de qualite microeconomics intreprinderi achat cheltuieli luare de decizie tests facteur temps preturi vanzari circulatie feroviara consumatori risc prise de decision manuels influenta sociala internationalization rapoarte de cercetare donnees statistiques sources d'information consomation theorie economique supply and demand circulation ferroviaire social influence data analysis economic theory purchasing simulation simulare prix quality control studii de piata mesure analyse des donnees comportamentul consumatorului rapports de recherche market studies eficienta economic analysis time factor metode statistice commercialisation carriage of passengers income distribution internationalisation risque anchete experiments informatie entreprises rentabilite consommateurs transport de pasageri piata internationala manuals observare experimente analiza datelor marketing clientele efficiency profitability influence sociale transport research reports methode statistique experiences consumer behaviour repartition du revenu factori de productie prices traffic masurare analyse economique sales circulation routiere productivite publicite cumparare consumers products marche international expenditure publicitate international market produits surse de informatie microeconomie evaluare economica etudes de marche controlul calitatii produse comparatie teze de doctorat economic evaluation factorul timp analiza economica teste information teorie economica information sources comparison distributia venitului circulation productivitate productivity