Physicists Have Argued Over This Problem Since 1883. It May Now Be Solved.

For more than a century, physicists debated which way a submerged sprinkler sucking in water would spin. Careful experiments ...
The Straits Times

US comedian Sammy Obeid ordered to carry Pofma correction notices on posts alleging censorship

SINGAPORE – Lebanese-Palestinian American comedian Sammy Obeid has been ordered to carry correction notices on social media posts he made on Aug 27, alleging that two planned stand-up shows in ...
Business Insider

Inside Zap Energy, the Bill Gates-backed company that wants to bring fusion power to the electrical grid

You're currently following this author! Want to unfollow? Unsubscribe via the link in your email. Behind the glass doors of an unassuming office building in Everett, Washington, sits a machine ...
Frontiers

Batch correction and harmonization of –Omics datasets with a tunable median polish of ratio

Large scale −omics datasets can provide new insights into normal and disease-related biology when analyzed through a systems biology framework. However, technical artefacts present in most −omics ...
PNAS

Crisis or self-correction: Rethinking media narratives about the well-being of science

Edited by Richard M. Shiffrin, Indiana University, Bloomington, IN, and approved September 25, 2017 (received for review June 16, 2017) 1. Quest discovery Honorable quest (discovery process) ...
Electronic Design

Back-to-Basics: On Power Factor And Why We Correct It

Power factor (pf) is the ratio between real power (P) flowing to the load, and the apparent power (S) in the circuit: pf = P/S. It is a sinusoidal waveform and therefore expressed as a dimensionless ...
IEEE

A Comparison of Simulation and Hardware-in-the- Loop Alternatives for Digital Control of Power Converters

Abstract: Debugging digital controllers for power converters can be a problem because there are both digital and analog components. This paper focuses on debugging digital controllers to be ...
EDN

Implementing power factor correction with frequency clamp critical conduction mode

There’s an increasing need for high-efficiency power conversion for a wide range of applications. Among the several available power factor correction (PFC) solutions, the critical conduction mode (CrM ...
The Lancet

Granulocyte-macrophage colony stimulating factor administered as prophylaxis for reduction of sepsis in extremely preterm, small for gestational age neonates (the PROGRAMS ...

aDepartment of Haematology, Guy's and St Thomas' Hospital, King's College, London, UK ...
IEEE

Sample correction for digitally controlled boost PFC converters operating in both CCM and DCM

Abstract: PFC converters for the higher power range are commonly designed for continuous conduction mode. Nevertheless, at light load, DCM will appear close to the crossover of the line voltage, ...