Greg DePersio has 13+ years of professional experience in sales and SEO and 3+ years as a writer and editor. Robert Kelly is managing director of XTS Energy LLC, and has more than three decades of ...

Quantitative research relies on analyzing statistical data, while qualitative research focuses on answering important business questions, including discovering why customers select products or ...

Part One: The nature and process of social research ; Social research strategies ; Research designs ; Planning a research project and formulating research questions ; Getting started: Reviewing the ...

Analytical chemistry has witnessed substantial progress in enhancing both sample preparation and detection methods. Modern techniques strive for high sensitivity, improved selectivity and streamlined ...

Centuries of scientific research and development have led to techniques that have set the foundation for the future of automated research with high-throughput sample processing (HTSP). The world is ...

Note: This report was updated on Dec. 30, 2015 to reflect the January-July 2015 National Health Interview Survey estimates released on December 1, 2015. Telephone surveys face numerous challenges, but ...

Infectious disease research is an essential component of human society that has been thrown into the spotlight by the COVID-19 pandemic. This research is enabled by a diverse array of methods and ...

This study looks at how national public opinion polling in the United States changed from 2000 to 2022. It focuses on two aspects: the sample source(s) – that is, where the survey takers came from – ...