With no STA mobility, the gap between the heuristics and the optimum is caused by two effects: first, even in absence of mobility, handovers might be required when STAs join or leave the network.
This could have been caused by two reasons: First, sequestration of nicotine by antibodies in blood might not be sufficient for increasing abstinence rates in smokers.
In our opinion, this is caused by two main problems: first, the number of fully sequenced bacterial strains within the same species have not been sufficiently large until recently; second, phenotype data with respect to drug susceptibility tests are spread throughout the literature and are not easy to collect.
The results of this model will likely overestimate the effect of education on adult competencies because educational attainment and competencies are both to some degree caused by two common third variables, family conditions and cognitive ability (confounding bias, see for example Elwert and Winship 2013).
CVD was the leading cause of death; it was followed closely by infectious diseases; together, these two causes accounted for approximately two-thirds of all mortalities.
They analysed the modified Young's equation and came to the conclusion that wettability enhancement is caused by two combined effects; the first effect they thought to be an increase in adhesion tension; and the second, an increase in the surface roughness.
But Salazar won by two seconds.
Dioecy likely evolves from hermaphrodite or monoecious ancestors by two mutations with the first causing male sterility and the second reducing female fertility.
Dioecy may have evolved from hermaphrodite or monoecious ancestors by two independent mutations: a first mutation causes male sterility, whereas a second mutation results in decreased female fertility, leading to functional dioecy [ 23].
Three causes stand out: the first was workers' control.
The first one hundred causes of death were coded independently (by A.N and P.K).
