منابع مشابه
Economic growth and transitions between renewable and nonrenewable energy resources
We study transitions between nonrenewable and renewable energy forms at di!erent development stages of an economy. It is shown that in the historical context the emphasis on energy production may evolve from renewables to nonrenewables and back to renewables. Typically both energy forms are used simultaneously. Along the equilibrium path, nonrenewable resource consumption may increase and their...
متن کاملSpecialization and Nonrenewable Resources
The one-demand Hotelling model fails to explain the observed specialization of nonrenewable resources. We develop a model with multiple demands and resources to show that specialization of resources according to demand is driven by Ricardian comparative advantage while the order of resource use over time is determined by Ricardian absolute advantage. An abundant resource with absolute advantage...
متن کاملDiscrete Time, Cost and Quality Trade-Off Problem with Renewable and Nonrenewable Resources
The discrete time –cost trade-off problem (DTCTP) is one of the main aspects of project scheduling. In DTCTP , we treat cost as a non-renewable resource and the availability of renewable resource per period has been neglected. It was recently suggested that the quality of project should also be taken into consideration. Therefore, when renewable resources and quality are considered, the traditi...
متن کاملRenewable and nonrenewable resources: amino acid turnover and allocation to reproduction in Lepidoptera.
The allocation of nutritional resources to reproduction in animals is a complex process of great evolutionary significance. We use compound-specific stable isotope analysis of carbon (GC/combustion/isotope ratio MS) to investigate the dietary sources of egg amino acids in a nectar-feeding hawkmoth. Previous work suggests that the nutrients used in egg manufacture fall into two classes: those th...
متن کاملThe Real , Real Price of Nonrenewable Resources : Copper 1870 - 2000
Over the past 40 years economists have devoted considerable effort to estimating long-run trends in real commodity prices. The results indicate that the real prices for many commodities have fallen, suggesting to the surprise of many that resource scarcity is declining over time. Almost all of this work, however, uses the U.S. producer price index or other standard price deflators, which recent...
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ژورنال
عنوان ژورنال: Science
سال: 1976
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.191.4228.631