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61.
The current global food crisis has reemphasized the costliness of Africa's failure to achieve food security and poverty reduction. The instrument by which other more successful developing countries achieved these outcomes was a “Green Revolution” in agriculture. While previous research has provided largely discursive appraisals of the viability of an African Green Revolution, this article adopts a more rigorous methodology to address that question. First, an economy‐wide multimarket model, augmented with existing poverty–growth elasticities, is developed to assess the likely impacts of a rapid acceleration in food production (of the kind witnessed in previous Green Revolutions) on food prices, consumption and demand, farmer revenue, and poverty. Our results suggest that a rapid growth in staple production, together with more integrated regional markets, would reduce food prices by roughly 20–40% for consumers and 10–20% for producers among the major crops. This translates into a large rise in farm revenues, annual agricultural growth rates of 6.5% or higher, broader income growth and food security, and over 70 million Africans being lifted out of poverty. The article concludes by emphasizing the kinds of fundamental policy actions and resources that would be required for achieving these outcomes. 相似文献
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Derek C. Jones 《Managerial and Decision Economics》1993,14(5):475-485
The effects of employee ownership, broadly defined, are estimated for a sample of Polish producer co-operatives in three industries during 1976-8, i.e. when Poland was a centrally planned economy. The results indicate that, in general, increasing either worker participation in control and/or in economic returns provides positive effects on productivity. The pattern of the different effects of employee ownership varies significantly across sectors. This new evidence strongly suggests that workers within Soviet-type economies are responsive to economic incentives. Together with existing theoretical and empirical evidence for both Eastern and Western European firms, the findings suggest a larger role for employee ownership than typically either currently exists or that is under serious consideration in most restructuring economies. 相似文献
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66.
Linking technical change to research effort: an examination of aggregation and spillovers effects 总被引:1,自引:0,他引:1
We used a disaggregate approach to examine investment efficiency of wheat breeding research in India. India's total research effort comprizes 20 research programs spread across 50 experiment stations. A technology spillover matrix was constructed for both potential and actual spillovers. Spillovers and free‐riding were dominant characteristics of technical change during the period studied. Although the aggregate rate of return to wheat improvement research in India was estimated to be 55%, eight programs were found to have earned a negative rate of return when spillins were taken into account. Research output is concentrated on a few strong programs. The two strongest programs generated 75% of all the technical change benefits, even though they claimed just 22% of research resources. These two programs include a significant degree of overlap, while on the other hand many farmers were not reached by any of the programs – 56 and 78% of rainfed and durum area, respectively, in 1990 was still sown with pre‐1976 varieties. 相似文献
67.
Derek Yu 《Development Southern Africa》2012,29(1):157-175
There is limited consensus on how to define informal employment in South Africa, but in the South African and international literature the three most common ways of capturing informal employment are the enterprise, employment relationship and worker characteristics approaches. This paper reviews the methods used by Statistics South Africa to measure informal employment before and after the introduction of the Quarterly Labour Force Survey, and other recently proposed methods. It then investigates the congruence, if any, between five measures of informality used in 2009. It finds that 94.7% of the self-employed are informal according to at least one definition, but only 62.6% according to all five combined. In addition, these two proportions are only 67.7% and 6.9% respectively in the case of informal employees. Econometric analysis is conducted to further investigate the differences between these measures. 相似文献
68.
We compare selected project management practices undertaken almost 2,000 years ago with current literature on best project management practice. We take a case study approach focusing on a person who could be seen to have taken a project manager, project sponsor, and champion role. We suggest that some project management approaches used in Roman times are routinely used today; however, changes in the culture and technology have transformed possibilities for project management techniques, and so changed approaches are inevitable. The paper provides useful insights about the nature of changes to project management practice that may be expected during this century. 相似文献
69.
Derek Yu 《Development Southern Africa》2013,30(4-05):545-563
One of the most pressing socio-economic problems of the South African economy is high youth unemployment. Recent studies only briefly examined how youths have fared since the transition by comparing the 1995 October Household Survey with a Labour Force Survey, and hardly investigated whether the discouraged workseekers are different from the unemployed. This paper re-examined youth unemployment trends in the 2008–12 Quarterly Labour Force Surveys, before comparing the characteristics of discouraged workseekers and narrow unemployed. Whether different policies are needed to boost youth employment in each group is also discussed. 相似文献
70.