Passivity as activity

Passivity Analysis of Human as a Controller

Human controllers as pilots or drivers can be described by linear time invariant systems cascaded with time delay. Inspired by this, we ‘generalize’ the definition of passivity index to irrational transfer functions and use the passivity index to examine passivity of some existing human models. The results show that the human model is non-passive due to the time delay which represents inherent ...

Second Law based definition of passivity/activity of devices

Memristor Equations: Incomplete Physics and Undefined Passivity/Activity

In his seminal paper, Chua presented a fundamental physical claim by introducing the memristor, "The missing circuit element". The memristor equations originally supposed to represent a passive circuit element because, with active circuitry, arbitrary elements can be realized without limitations. Therefore, if the memristor equations do not guarantee that the circuit element can be realized by ...

Passivity of AISI 316L stainless steel as a function of nitric concentration

In this study, electrochemical behaviour of passive films formed on AISI 316L stainless steel (AISI 316L) in three acidic solutions concentrations (0.3, 0.6, and 0.9M HNO3) under open circuit potential conditions were evaluated by potentiodynamic polarization, Mott–Schottky analysis and electrochemical impedance spectroscopy (EIS) techniques. The potentiodynamic polarization results showed that...

Theorizing passivity

process essentially is conservative and, in some discipline, produces a regression to some mean—all articles in a particular journal resemble each other. As a result, there is little innovation in the forms and contents of thinking and theorizing. Despite being in special institutional positions (variously theorized as gatekeepers or obligatory points of passage), few editors appear to allow mo...