Participation factors are nondimensional scalars that measure the interaction between the modes and the state variables of a linear system. Since their introduction by Verghese, Pérez-Arriaga and Schweppe, participation factors have been used for analysis, order reduction and controller design in a variety of fields. In this paper, participation factors are revisited, resulting in new definitio...

The introduction to the ‘Condition Critical’ symposium explains background series on climatic and pandemic crises at beginning of 2020s. What is role law in times crisis? How does this force for continuity, predictability order react discontinuity characteristic disasters? suspension or its day-to-day operations a moment extreme danger, rivalling that disaster itself, licence it gives powerful ...

there is nothing quite so helpless in this world as a baby broiler chick which has been snatched from the warmth of its surrogated mother, carted umpteen kilometers in a box dumped unceremoniously in a broiler shed and then told to get on with the job of making the boss a wealthy man. yet within the space of 14 days, that same chick, under optimum conditions, will have increased its day-old bod...