For seropositivity (whether animals had detectable levels of plague antibody; n = 1,287), the optimal model (AIC = 1,287.6; Table 2) included maturity, year, site, NBT value, and whether an animal was subsequently recaptured, as well as a large number of interactions.
The initial fine-tuning of the model to estimate (from climatic conditions and, hence, vegetation cover) the changeable level of sylvatic plague activity within rodent populations over past centuries was achieved by the empirical comparison of 10,000 (yes, 10,000) computer-generated model variants tested against 20th century Kazakh data.
With the current level of mistrust plaguing corporate America, don't look for them to make a comeback anytime soon.
Plague dynamics often are characterized by epizootics, resulting in interannual variation in infection rates among plague hosts; however, seroprevalence of 8 puma samples collected in the 1980s mirrored contemporary samples collected since 2002 and may indicate high levels of sustained plague activity in the area in this species.
The authors have also had to make simplifying assumptions about the determinants of (and, hence, the proxy index for) the changeable level of sylvatic (rodent) plague activity over time.
A comfortable, good but not elite, level of football had plagued the end of Bobby Bowden's storied coaching career, and it had seeped into the start of Fisher's.
It's not quite at the level of diagnosing space plagues, but it could save valuable seconds in triage situations.
Even though U.S. President Richard Nixon quashed the U.S. dollar's direct convertibility to gold in 1971, the precious metal only gained popularity as a safe-haven investment since the double-digit level of inflation that plagued the economy during the period undermined the value of the U.S. dollar.
On the one hand, they must please an increasingly demanding shareholder base, but on the other, they have to improve upon the low levels of allegiance plaguing their organizations a reality hit home last year by a Hewitt Associates survey that found four of 10 employees were interested in working elsewhere.
The levels of antagonism plaguing our society today are so high that humanity can reach unprecedented highs if we choose to make peace among us, as the book suggests.
