Vaclav Smil, Distinguished Professor at the University of Manitoba offers a general overview on Immigration in Europe and Spain. He starts by making general observations on immigration. He gives some examples of pull and push economic factors of immigration, such as fertility rate or integration factors. He then discusses the so-called "war-caused immigration" and concludes the speech talking about the difficulty to know what will happen in the future due to the complexity of the immigration issue.
Vaclav Smil studied in an interdisciplinary program at the Faculty of Natural Sciences of Carolinum University in Prague (RNDr) and at the College of Earth and Mineral Sciences of the Pennsylvania State University (PhD). Currently he is a Distinguished Professor in the Faculty of Environment at the University of Manitoba. He has published more than 25 books (not counting translations to Japanese, Chinese, Korean, Italian, Spanish, Dutch and Norwegian) and more than 300 papers in about 80 different energy, environmental, Asian studies and general science periodicals (ranging from American Scientist to World Development and from Bulletin of Atomic Scientists to Scientific American), and in more than 30 edited volumes. His interdisciplinary research interests encompass a broad area of energy, environmental, food, population, economic and public policy studies. Since the early 1970s he has also applied these approaches to energy, food and environmental affairs of China.
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Adi said:
20 Sep 20:39
There are very few studies to date that I am aware of dicret rebound effects (e.g. the micro-scale rebounds at the level of individual households), compared to the relatively plentiful studies of dicret rebound in developed countries. Two I am aware of are below:E.O. Zein-Elabdin. Improved stoves in Sub-Saharan Africa: the case of the Sudan, Energy Economics, 19(4): 465-475. 1997Joyashree Roy. The rebound effect: some empirical evidence from India, Energy Policy, 28(6-7): 433-438. 2000.Roy 2000 looks at the impact of free distribution of solar lamps to Indian rural villages. Zein-Elabdin 1997 does look specifically at rebound from improvements in biomass (charcoal) cooking stoves in the Sudan. It finds dicret rebound of 42%, meaning that if the efficiency of charcoal-burning stoves doubles in efficiency, rather than save 50% of energy consumption, energy consumption would only fall 50%*(1-42%) = 29%. That's not a bad thing though from a development perspective, because what it means is a house that now uses its more efficient stove to get more welfare out of it. Assume the following:A standard stove provides 100 units of welfare by burning fuel at an efficiency of 1 unit of welfare per unit of fuel. The household thus consumes 100 units of fuel.If we double the efficiency of the stove, so it now gets 2 units of welfare for each unit of fuel, the standard assumption is that this cuts household fuel consumption to 50 units, while still providing 100 units of welfare.In reality, the cost of producing each unit of welfare is now lower, and since the household wants more welfare and until now they've been too poor to get all the welfare out of the stove they want, they're going to use the stove more to get more welfare now that they can afford it. That's the dicret rebound effect. If its 42% for charcoal stoves in Sudan, as the Zein-Elabdin (1997) study finds, then what would happen is this: the household would use the stove 42% more, getting 142 units of welfare from the stove. At the newer efficiency of 2 units of welfare per unit of fuel, they'd now consume 71 units of fuel, not 50, eroding 42% of the expected reduction in energy demand of 50 units of fuel (total energy consumption falls from 100 units to 71 units rather than 50 units). The household's welfare improves, their fuel use still drops, though not in half. Good news still from a developmental perspective, just not as good from a climate perspective as we might have initially thought. The greenhouse gas impact of charcoal harvest, production and consumption doesn't fall by 50% when the efficiency of the stoves doubles, by rather falls by a more modest 29%.Make sense? Sorry for the long-winded explanation! Jesse JenkinsBreakthrough Institute