منابع مشابه
More People, More Jobs: Urban Renaissance in Germany
Germany's big cities are gaining in attractiveness both as a place for living and as a location for companies. Even as Germany's total population is declining, the population of cities increased by nearly 3 percent between 1999 and 2008. The same is true for spatial shifts in the economy: During the past 10 years employment in big cities increased by nearly 4 percent while stagnating in Germany...
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One of the most important activities of the nervous system is the integration of signals at synapses. Synapses are akin to subway stops, where nerves carrying signals along their axonal tracks unload their information cargo in the form of small molecules and peptides. These neurotransmitters communicate with the adjacent nerves either by directly gating ion channels in the nerve terminal — such...
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Public policies may affect employment by directly creating jobs, facilitating job creation, or augmenting labor supply. In labor markets with high unemployment, such employment changes may have significant net efficiency benefits, which should be included in benefit-cost analyses. The research literature offers diverse recommendations on measuring employment benefits. Many of the recommendation...
متن کاملThe Cost of Learning Directed Cuts
In this paper we investigate the problem of classifying vertices of a directed graph according to an unknown directed cut. We first consider the usual setting in which the directed cut is fixed. However, even in this setting learning is not possible without in the worst case needing the labels for the whole vertex set. By considering the size of the minimum path cover as a fixed parameter, we d...
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Many countries in Africa suffer high rates of underemployment or low rates of productive employment; many also anticipate large numbers of people to enter the workforce in the near future. This paper asks the question: Are African firms creating fewer jobs than those located elsewhere? And, if so, why? One reason may be that weak business environments slow the growth of firms and distort the al...
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ژورنال
عنوان ژورنال: Nature
سال: 1988
ISSN: 0028-0836,1476-4687
DOI: 10.1038/334097b0