Business owners are constantly gathering information to help develop strategies to improve marketing and sales. Ultimately, the goal is to improve the bottom line, with better targeting of a company's ...

Pew Research Center designed this study to assess the current state of online survey sampling methods – both probability-based and opt-in – and determine their accuracy on general population estimates ...

Recent advances in analytical chemistry have markedly enhanced the characterisation of petroleum and oil samples. With the increasing demand for precise quality control and environmental compliance, ...

Daniel McDonald and Jack Gilbert (both University of California, San Diego; CA, USA) discuss the challenges faced during fecal sample collection and highlight important factors to consider when ...