Recent work has shown that AdaBoost can be viewed as an algorithm that maximizes the margin on the training data via functional gradient descent. Under this interpretation, the weight computed by AdaBoost, for each hypothesis generated, can be viewed as a step size parameter in a gradient descent search. Friedman...
Reproductive strategies of birds are shaped by patterns of food supply, yet empirical evidence of the consequences and mechanisms of food limitation on reproductive performance is inconsistent, probably due to variable responses from species of differing life-history strategies. We tested the hypothesis that food supplementation would increase reproductive rates of...
BACKGROUND: Gas stoves emit pollutants that are respiratory irritants. U.S. children under age 6 who live in homes
where gas stoves are used for cooking or heating have an increased risk of asthma, wheeze and reduced lung
function. Yet few studies have examined whether using ventilation when operating gas stoves...
BACKGROUND: Gas stoves emit pollutants that are respiratory irritants. U.S. children under age 6 who live in homes
where gas stoves are used for cooking or heating have an increased risk of asthma, wheeze and reduced lung
function. Yet few studies have examined whether using ventilation when operating gas stoves...
Full Text:
NHANESIII
Molly L Kile1*, Eric S Coker1, Ellen Smit1, Daniel Sudakin2, John Molitor1 and Anna K Harding1
BACKGROUND: Gas stoves emit pollutants that are respiratory irritants. U.S. children under age 6 who live in homes where gas stoves are used for cooking or heating have an increased risk of asthma, wheeze and reduced lung function. Yet few studies have examined whether using ventilation when operating gas stoves...
We quantified the juvenile rearing and migratory patterns of individuals from a population of fall-spawning Chinook salmon Oncorhynchus tshawytscha in Oregon's Salmon River estuary using otolith microchemistry and microstructure. The study confirmed the daily periodicity of otolith growth increments in a natural fish population under field conditions and validated fundamental...
PCR amplification, restriction fragment length polymorphism, and phylogenetic analysis of oxygenase genes
were used for the characterization of in situ methane- and ammonia-oxidizing bacteria from free-living and
attached communities in the Eastern Snake River Plain aquifer. The following three methane monooxygenase
(MMO) PCR primer sets were used: A189-A682, which amplifies...
Coastlines have traditionally been engineered to maintain structural stability and to protect property from storm-related damage, but their ability to endure will be challenged over the next century. The use of vegetation to reduce erosion on ocean-facing mainland and barrier island shorelines – including the sand dunes and beaches on...