Estimates of narwhals summering in Canadian Arctic waters have improved because of new techniques. Previous estimates had placed populations between 20,000 and 30,000. New estimates increase that ...

One possible explanation for the variability in estimates across the different nonprobability samples is the range of methods that online sample vendors employ. They differ on recruitment, weighting ...

The National Academies of Sciences, Engineering, and Medicine are private, nonprofit institutions that provide expert advice on some of the most pressing challenges facing the nation and world. Our ...

The current survey was conducted Aug. 27 to Sept. 24, 2009 among 14,760 respondents in Britain, Bulgaria, the Czech Republic, France, Germany, Hungary, Italy ...

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A silent, educational film about Second Order Triangulation would explore how this intermediate stage in establishing accurate survey frameworks refines and densifies the primary geodetic control ...

Survey sampling and estimation methods form the cornerstone of modern statistical inference, underpinning research across the social, medical, and natural sciences. At their heart, these methods ...

Balancing the need for accurate estimates of wild ungulate populations with survey costs continues to challenge wildlife biologists. We present a case study to evaluate the feasibility of using ...

The Taguas property comprises 15 mining concessions covering around 3,274ha within the renowned Andean mineral belt.

WINNIPEG, MB -- APRIL 2010 -- Improvements in aerial survey methods have led to increased estimates of narwhal populations in the eastern Arctic, according to a paper published Arctic, the journal of ...