You cannot patch active plasma and collisionless sheath

"If you cannot measure it, you cannot improve it".

Charging of Dust Particles in Collisionless Plasma Sheath with Non-maxwellian Electron Energy Distribution Function

The key parameter driving behavior of dust particles in plasma is their electric charge [1]. Present-day theories as well as experiments are not fully successful in determining its value [2]. Moreover, the theoretical uncertainties are increased in the plasma sheath – a think plasma layer at a wall or electrode. The standard models of dust charging in the plasma sheath usually suppose Maxwellia...

See What You Cannot See

DU. A national study of chronic disease prevalence and access to care in uninsured U. Engelgau MM. Self-management education for adults with type 2 diabetes: A meta-analysis of the effect on glycemic control. The health status of patients of a student-run free medical clinic in inner-city Buffalo, NY. Insuring the uninsured: A student-run initiative to improve access to care in an urban communi...

Modifying gravity: you cannot always get what you want.

The combination of general relativity (GR) and the Standard Model of particle physics disagrees with numerous observations on scales from our Solar System up. In the canonical concordance model of Lambda cold dark matter (ΛCDM) cosmology, many of these contradictions between theory and data are removed or alleviated by the introduction of three completely independent new components of stress en...

Constraint Acquisition - You Can Chase but You Cannot Find

We identify established tableaux techniques as an invaluable tool for semantic knowledge acquisition in the design process of relational databases. Sample databases allow users and designers to judge, justify, convey and test their understanding of the semantics of the future database. In the case of integrity constraints such sample data can provide considerable assistance for deciding whether...