The most important event in human economic history before the Industrial Revolution was the Neolithic transition from a nomadic hunter-gatherer lifestyle to sedentary agriculture, beginning about 10,000 years ago. The transition made possible the human population explosion, the rise of non-foodproducing specialists, and the acceleration of technological progress that led eventually to the Indus...

We present historical data on sovereign bond spreads drawn from 300 years of data (from the late seventeenth century to the late twentieth century), which appear to be inconsistent with the North and Weingast (1989) view that institutional changes and reforms can reduce the cost of government debt soon after they are implemented. Extended time series data on British government debt from the lat...

The application of power-driven machinery to manufacturing and other areas of human endeavor characterized the Industrial Revolution in the 18 and 19 centuries. Measurement contributed in many ways to the increasing economic influence of these machines. Using formal or informal physical principles, metrics and measurement techniques were found that allowed the comparison of machine performance ...

of Russian forces and the fall of President Hafizullah Amin, come within two years of the uprising of April 1978, through which the People’s Democratic Party of Afghanistan gained state power. Whilst no-one can predict the outcome of these developments, it is evident that the Afghan revolution is in a gravely weakened condition: it is able to rely on Soviet military support for ultimate surviva...

In a search for a solution of the galaxy rotation problem, a novel view on cosmological gravity is developed. In this view, the origin of gravity is traced back to the basic nuclear field of energy, spread by quarks as elementary pointlike sources. This gives a common basis for gravity, electromagnetism, the strong nuclear force and the weak nuclear force. After a review on gravimagnetism and t...

1 Definition of the subject and its importance Perturbation Theory: Computation of a quantity depending on a parameter ε starting from the knowledge of is value for ε = 0 by deriving a power series expansion in ε, under the assumption of its existence, and if possible discussing the interpretation of the series. Perturbation theory is very often the only way to get a glimpse of the properties o...

The swimming properties of an E. coli-type model bacterium are investigated by mesoscale hydrodynamic simulations, combining molecular dynamics simulations of the bacterium with the multiparticle particle collision dynamics method for the embedding fluid. The bacterium is composed of a spherocylindrical body with attached helical flagella, built up from discrete particles for an efficient coupl...