Confounding is examined from first principles. In follow-up studies a confounder is a predictor of diagnosing the illness--by being either a risk indicator or a determinant of diagnostic errors; in addition, it shows different distributions between the exposed and nonexposed series. In case-referent studies confounding can arise in two ways. A priori confounders are correlates of exposure in th...

∗This paper was published in Mind , 115/459 (July 2006): 659–693. Note: In transferring the LTEX in this preprint to the format used for publication in Mind, a couple of symbols were omitted. This preprint can be used to determine what the missing symbols are. †I’d like to thank Adriano Palma and Sacha Bourgeois-Gironde for inviting me to prepare this material and present it at the École Normal...

in order to investigate the effect of irrigation intervals and harvesting time on yield and yield components of anise (pimpinella anisum l.) a field experiment was conducted at the agricultural research station, university of zanjan in 2010. for this purpose a spilt-plot experiment based on complete randomized block design with three replications was used. three irrigation intervals (every 7, 1...

What is the relation between metaphysical necessity and essence? This paper defends view that one of identity: a special case essence. My argument consists in showing best joint theory essence which just The made against backdrop novel, higher-order logic (HLE), whose core features are introduced first part paper. second investigates context HLE. Reductive hypotheses among most natural to be ex...

the present study was carried out to determine the effects of fish oil long-chain fatty acids and thyme essence supplementation on performance and carcass traits in mahabadi goat kids. twenty-eight mahabadi goat kids (average initial bw of 17/8 ± 2/8 kg, 4-5mo) were randomly assigned to four treatments of: 1. control (basal diet), 2. 0.2% thyme essence, 3. 2% fish oil, and 4. 2% fish oil +0.2% ...