Information on Earth's biodiversity is increasingly collected using DNA-, image- and audio-based sampling. At the same time, ...
We draw attention to two problems associated with the use of instrumental variables (IV), the importance of which for empirical work has not been fully appreciated. First, the use of instruments that ...
Abstract: Fast and accurate detection of rock structural surface traces is of great importance in geology and engineering. Photogrammetry collects rock surface images from industrial cameras and uses ...