The paper describes principles of factorial and fractional factorial design of experiments.The various ways of analysing data obtained by these procedures are shown via four case studies.Yates method was followed in case 1 where the effect of anode type, carbon content of steel, temperature, and agitation on cathodic protection of steel stickers lo
A descriptive qualitative research conducted with 20 drug addicts during treatment at a Center of Psychosocial Attention for Alcohol and other Drugs, aimed to identify intra and interpersonal determinants of 7gm pravana relapse perceived by the drug addict.The data were collected through semi-structured interviews, submitted to Content Analysis, an
Identifying the optimal time to replace a passenger bus in a buses fleet has implications on the size of the reserve fleet.Such calculations rest on endogenous and exogenous economic variables: the former include operating and maintenance costs and bus depreciation; the latter include market imponderables such as the inflation and real discount rat
Introduction Sexual dysfunctions in men are complex pentair hose disorders that consist of organic and psychogenic components.The most common sexual dysfunction is erectile dysfunction.It is the inability to achieve or maintain an erection for satisfactory sexual performance.This disorder can be caused by high blood pressure, heart disease, vascula
Healthy multiparous Holstein-Friesian cows (n = 22, parity: 2-4) from a large-scale dairy herd in Hungary were subjected to an intravenous glucose tolerance test 10-15 days after calving.AluI genotype of growth hormone, several plasma metabolites and metabolic hormones were determined, and current and previous lactation yields were recorded.We also