Results 261 to 270 of about 2,072,147 (313)
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Obstetrical & Gynecological Survey, 1971
There have been some questionable assertions relating to population growth. The most serious of these is the notion that the size and growth rate of the U.S. population are only minor contributors to this countrys adverse impact on local and global environment. The discussion in this article centers around 5 theorems which demonstrate the following:
P R, Ehrlich, J P, Holdren
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There have been some questionable assertions relating to population growth. The most serious of these is the notion that the size and growth rate of the U.S. population are only minor contributors to this countrys adverse impact on local and global environment. The discussion in this article centers around 5 theorems which demonstrate the following:
P R, Ehrlich, J P, Holdren
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The Tyranny of Population Growth
Conservation Biology, 2000The proximate cause behind the decline of biodiversity is most often reduction or change of habitat and isolation of wildlife populations. In the western United States, as in much of the world, these problems can ultimately be attributed to increases in human population and percapita consumption.
Daniel H, Pletscher, Michael K, Schwartz
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On growth and dispersal of populations
The Annals of Regional Science, 1989In his unpublished Master's thesis of 1921, the young Hotelling invented an ingenious model of population growth and diffusion. The contribution remained widely unknown until Waldo Tobler and Alan Wilson edited it as an article in 1978. Not even then did it trigger any outburst of contributions.
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Population growth and economic growth: A reconsideration
Economics Letters, 1996zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Yip, CK, Zhang, J
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Nuptiality and population growth
Population Studies, 1971Abstract In the European historical experience, nuptiality patterns played a very significant role in the development of low fertility. Late marriage and widespread celibacy provided one of the mechanisms by which age-specific fertility rates were brought to low levels in the populations of Western Europe.
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Plant growth and population dynamics.
2006The main purpose of quantitative nematological research is to achieve an optimal economical protection of crops against plant-parasitic nematodes. To accomplish this, the costs of control measures must be adjusted to the costs of the expected yield reduction compared to the yield in a situation without the need for control.
Schomaker, C.H., Been, T.H.
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The Optimum Growth Rate for Population
International Economic Review, 1975The theory of optimum population concerned with the stationary plateau of population considers limitations of unaugmentable land and economics of scale and maximizes per capita output and consumption. In the usual version of the growth model the slower the rate of exponential growth the higher the level of steady-state consumption.
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The Markov Structure of Population Growth
Acta Applicandae Mathematicae, 1989Some problems concerning the development of general models of population growth are examined, with particular reference to Markovian modelling. The tenet of the paper is that such models can be more realistically attempted by focusing on temporal rather than spatial modifications.
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2023
Abstract If birth rates exceed death rates, populations can rapidly grow. A model—defined here as a mathematical description of a biological process—is essential to understand how populations increase and decrease. Because intuition most often fails us and because the assumptions are clearly stated, predictions from models are precise ...
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Abstract If birth rates exceed death rates, populations can rapidly grow. A model—defined here as a mathematical description of a biological process—is essential to understand how populations increase and decrease. Because intuition most often fails us and because the assumptions are clearly stated, predictions from models are precise ...
openaire +1 more source

