This paper provides a unified growth theory, i.e. a model that explains the very long-run economic and demographic development path of industrialized economies, stretching from the pre-industrial era to present-day and beyond. Making strict use of Malthus’ (1798) so-called preventive check hypothesis – that fertility rates vary inversely with the price of food – the current study offers a new a...

In this paper the radial deformation and the corresponding stresses in a functionally graded orthotropic hollow cylinder with the variation in thickness and density according to power law and rotating about its axis under pressure is investigated by using Seth's transition theory. The material of the cylinder is assumed to be non-homogeneous and orthotropic. This theory helps to achieve better ...

AT THIS TIME, the cusp of the twenty-first century, age profiles in many countries are being fundamentally reshaped by population ageing or greying, a process apparently unique in world demographic history and one expected to be sustained well into the future.' Most evident in Europe and elsewhere in the developed world, including Japan, ageing is a global trend, with its symptoms appearing in ...

This paper provides a unified growth theory, i.e. a model that explains the very long-run economic and demographic development path of industrialized economies, stretching from the pre-industrial era to present-day and beyond. Making strict use of Malthus’ (1798) so-called preventive check hypothesis – that fertility rates vary inversely with the price of food – the current study offers a new a...

child and childbearing are considered as the most important 'family values' in iran. based on historical experiences and events as well as common life experience different generations of iranian women have various and sometimes contrasting attitudes and perceptions towards the meaning and concept of child. according to theoretical framework; cultural changes theory, second demographic...

this essay considers the implications of the demographic transition for the emergence of modern democracy. although the idea of representative democracy was present in europe and north america in the late eighteenth century, here i am concerned with its realization—and this occurs much later. i argue that consideration of the demographic transition in western countries sheds light on what is so...

The hydrogen abstraction reaction of OH radical with CH3CH2OCF2CHF2 (HFE-374pc2) is investigated theoretically by semi-classical transition state theory. The stationary points on the potential energy surface of the reaction are located by using KMLYP density functional method along with 6-311++G(d,p) basis set. Vibrational anharmonicity coefficients, ...