demographic transition
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Jung talks about the five different phases that a start-up will entail in its journey from inception to transition. Phase one is the start-up and the inception. Phase two is a period of growth. Phase three is the unfortunate setback that every venture will invariably face. Phase four is a stage for rejuvenation. The fifth and final phase is a transition for either you as an entrepreneur or the company overall, he says.
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Professor Sylvia Ceyer covers crystal field theory in both the tetrahedral case and the square planar case. The discussion then moves to the spectrochemical series and strong/weak field ligands. A conversation on magnetism, both paramagnetic and diamagnetic, in transition metals concludes the lecture.
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Professor Sylvia Ceyer introduces transition metals and the formation of coordination complexes. The Chelate effect is defined and the difference between geometric isomers and optical isomer (enantiomers) is discussed. The discussion concludes with d orbitals and d-electron counting in coordination complexes.
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The nineteenth century, above all in Europe, was the age of the 'demographic transition', from high birth and death-rates to low ones; people's health improved, they lived longer, the devastating visitations of epidemics like smallpox, typhoid and cholera gradually disappeared. This lecture explores the reasons for this change, and looks at its effects on culture and society, attitudes towards death and suffering, disease, debilitation an...more
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Prior to Malthus, population growth was seen as good for the power and wealth of a country. The rapid population growth of America was crucial in expelling England (via the Revolution) and France (via the Louisiana Purchase) from the US. But in fact, the numbers of the poor were growing in Europe in the 1700s. Malthus argued that poverty was due to an imbalance between people and resources; since population could rise very fast, it could a...more
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By 1950, in most of the underdeveloped world, mortality had fallen to about half its pre-modern rate. The birth rate, however, had remained high and, by 1950, was about twice the death rate. For the rest of the century, both rates fell dramatically and in parallel, maintaining the gap. The enormous excess of births over deaths in this period is known as 'the population explosion.' By 1990, the world population was growing at almost 90 mill...more
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Prior to the Demographic Transition, fertility in northwestern Europe was controlled by limiting marriage. Marriage was regulated by landowners and the churches, and was not allowed unless a man had accumulated the resources necessary to support a family. Long periods of being landless, a servant, or an apprentice, precluded marriage. Once married, there was no control of fertility. But, only about half of adults were married at any given ...more
