The first paradigm of Unit Operations and the second paradigm of Transport Phenomena are well recognized among the chemical engineers all over the world, and what the next paradigm is remains still an open question.
Wei identified three periods: the pre-paradigmatic, a first paradigm which he relates to the publication of the text 'Principles of Chemical Engineering', and a second paradigm associated with the text: 'Transport Phenomena', by Bird, Stewart and Lightfoot, in 1960.
The recognition of the underlying physical principles of the unit operations can be called the first paradigm.
It is difficult to see how they can be accounted for by the first paradigm, in particular the observation of the shapes of sub-units.
But then I started to get embroiled in resources and that [the rise in price of] oil was the first paradigm shift that we'd ever come across in an important asset class, and nothing is more important than oil.
In the first paradigm of digital activism, you work with a disadvantaged group that suffers from limited access to even the most basic information and tools for self-expression.
The first paradigm – unit operations – has emerged as a necessity of systematization due to the explosion of chemical industrial applications at the end of 19th century.
In the first paradigm, a novel concept called middle-domain mobility management in between macro- and micro-domain for 802.16-2004 is proposed.
This new data-intensive science was named the "fourth paradigm of science," preceded by the third (last few decades: computational branch, modeling, and simulating complex phenomena), the second (last few hundred years: theoretical branch, using models leading to generalizations), and the first paradigm (a thousand years ago: empirical description of natural phenomena).
The first paradigm was a tribal organisation, initiated around 15 000 years ago.
