منابع مشابه
Falling Behind, Forging Ahead and Falling Behind Again: Thailand from 1870 to 2014
The paper argues that Thailand’s economic and social development from the late 19th century to the early 21st century presents a puzzle. For much of the period from 1870 to 1940, the country’s economic growth was slow, and the economy remained agricultural, with little diversification into modern industry or services. It was the only Southeast Asian country to escape direct colonization, and ye...
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With the diffusion of digital information technology, data mining (DM) is widely expected to increase the productivity of all kinds of research activities. Based on bibliometric data, we demonstrate that the share of DM-related research articles in all published academic papers has increased substantially over the last two decades. We develop an ordinal categorization of countries according to ...
متن کاملFalling teen pregnancy, birthrates: what's behind the declines?
About half of the almost 1 million US teenagers who become pregnant each year carry their pregnancies to term and give birth. However, after years of steady increases, teen birthrates in the US are lower and pregnancy rates have fallen to their lowest level in 20 years. Teenage sexual activity is also declining. Over the period 1991-96, the birthrate in the US among teens declined from the 2...
متن کاملAgriculture, Climate, and Technology: Why Are the Tropics Falling Behind?
The tropics, sadly, continues to be a belt of poverty. The countries of the tropics all have low or middling incomes, with a few tiny or natural-resource-rich exceptions, and few of the poorest countries are outside of the tropics. The causes of tropical poverty are surely complex, involving initial endowments (Diamond), history, especially colonization, and geographical isolation (Gallup and S...
متن کاملMedical factors of falling asleep behind the wheel.
Drivers' sleepiness and falling asleep while driving account for a considerable proportion of vehicle accidents (studies show different results from 1% to 30%). Sleepiness is rarely well recognised as a causing factor of traffic accidents. 2.5% up to 20% people suffer from excessive daytime sleepiness (EDS) with sleep deprivation as its most frequent cause. There is a strong association between...
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ژورنال
عنوان ژورنال: Nature
سال: 1990
ISSN: 0028-0836,1476-4687
DOI: 10.1038/343501a0