Evaluating the Performance of Low-Cost Air Quality Monitors in Dallas, Texas.

The emergence of low-cost air quality sensors may improve our ability to capture variations in urban air pollution and provide actionable information for public health. Despite the increasing popularity of low-cost sensors, there remain some gaps in the understanding of their performance under real-world conditions, as well as compared to regulatory monitors with high accuracy, but also high cost and maintenance requirements. In this paper, we report on the performance and the linear calibration of readings from 12 commercial low-cost sensors co-located at a regulatory air quality monitoring site in Dallas, Texas, for 18 continuous measurement months.

Endoscopy simulation for medical students.

Background: [Is] the endoscopy simulator a popular and effective novel approach to teaching? Medical simulation can bridge the educational gap between the classroom and the clinical environment, and is an established tool in teaching aspects of the undergraduate curriculum. We have investigated whether the endoscopy simulator is a popular and effective novel approach to teaching some of the year-3 gastroenterology learning objectives.

Methods: Feedback questionnaires were collected over two terms for tutorials on upper gastrointestinal (GI) bleeding and diarrhoea designed around the endoscopy simulator.