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991.
THE COSTS AND BENEFITS OF SOIL CONSERVATION: THE FARMERS' VIEWPOINT   总被引:5,自引:0,他引:5  
Most countries in Central America and the Caribbean depend heavilyon agriculture; efforts to sustain and improve the sector'sproductivity are therefore crucial to the region's economicdevelopment and to the welfare of its people. Land degradationis thought to pose a severe threat to the sustainability ofagricultural production. Yet despite long-standing concern aboutthis threat and dramatic claims of environmental damage, surprisinglylittle empirical analysis has been done on the causes and severityof land degradation problems in the region and on how best totackle them. Meanwhile, many of the conservation programs designedto address the problems have fallen short of expectations. Oftenfarmers have not adopted the recommended conservation practicesor have abandoned them once the project ended. The research presented in this article attempts to bridge theempirical gap, using cost-benefit analysis to investigate thenature and severity of the soil degradation problem and to assessthe cost-effectiveness of proposed solutions. Because soil degradationproblems tend to be site-specific, the analysis is rooted incase studies, and because conservation programs stand or fallon the participation of farmers, the study's main focus is onthe profitability of the measures and the deterrents to theiradoption from the farmers' point of view.   相似文献   
992.
    
This interview examines Telefónica's projects and efforts in the area of corporate social responsibility. Telefónica is one of the world's largest multinational firms in the telecommunications sector. It is present in 25 countries, serves more than 260 million customers, and employs a staff of approximately 285,000 professionals. The company is still advancing and finding new opportunities to increase its capacity to innovate, improving ways of doing business, enhancing customer satisfaction, and helping educate customers. In this interview, Oscar Maraver (managing director of the human resources area), Jose Buqueras Dobato (director of HR planning), and Alberto Andreu Panillos (director of corporate reputation and identity and environmental affairs) explain and share their vision of policies developed both internally with employees and externally with customers. Their approach includes a strong emphasis on corporate social responsibility.  相似文献   
993.
The aim of this paper is to examine the effect of oil price movements on unemployment in Central and Eastern Europe. We do this by disentangling oil prices movements by their sign and from there we analyse the separate effects of positive and negative movements of oil prices on unemployment rates. We find that, although oil prices and unemployment are not correlated very much in the short run, the effect of oil price shocks on the natural rate of unemployment goes in the same direction, so that increases or decreases in oil prices increase or decrease the natural rate of unemployment.  相似文献   
994.
995.
    
Recent trends toward outsourcing and global sourcing have created longer, more complex and more fragmented supply chains. In this research, we aim to instigate a theoretical development of multi‐tier supply chain (MSC) management by adopting an inductive case study research design. Following a multiple case research design, we investigate three‐tier supply chains to develop a theory of MSC management. Each of the investigated supply chains consists of a buyer, supplier and supplier's supplier. Based on the case studies, propositions are built concerning how MSCs operate. As an underlying methodology, we first conduct a within‐case analysis and then expand that analysis to the cross‐case context. The results show the impact that the dynamics of the MSC have on power balance, structure, interdependence and relationship stability inherent in MSCs.  相似文献   
996.
One of the most common measures of carry trade attractiveness is the carry-to-risk ratio. On analysing the speculative activity, this ratio presents two issues: First, emerging market currencies could merit a legitimate risk premium in a carry trade strategy due to the sovereign risks involved. In order to correct the measure, we include the credit risk in the measure using credit default swaps. Second, we gather more information about potential volatility asymmetries including a directional speculation indicator known as the risk reversal. We prove that the enhanced measure for the Mexican peso (MXN) is well represented by an ARIMA model with appropriate features since 2009. Due to the output of the analysis, we deduce that the Bank of Mexico might use this measure or a similar indicator, not only to understand the attractiveness of the carry trade strategy but to curb destabilizing carry trade activities. The case is compelling for the Mexican peso due to its dual role as emerging market currency and full convertible currency. We conclude that this institution may effectively manage the enhanced carry-to-risk measures in order to achieve financial stability and proper exchange credibility, and recognize its potential utility for other central banks.  相似文献   
997.
    
There is pervasive evidence that individuals invest primarily in local stocks and thus hold poorly diversified portfolios. The present article develops a theoretical model in which the presence of informational asymmetries introduces home equity bias. The main departure from previous theoretical work is the assumption that local investors outperform nonlocal investors in identifying the correct ranking of local investment opportunities, instead of possessing superior information about the aggregate performance of the local stock market. The second key assumption is based on the evidence that short‐selling is a costly activity.  相似文献   
998.
    
Previous empirical studies examining the impact medical residents have on hospital productivity have made a priori assumptions about whether medical residents are inputs (labour providing patient care) or outputs (students receiving mandatory training under the supervision of an attending physician) when specifying their estimating equations. We shed light on the role medical residents play in hospital production by using a data-driven parametric approach based on the directional technology distance function. Our primary goal is to assess the extent to which one of the two roles of medical residents empirically dominates the other and to see whether the role varies across different types of hospital. Using the American Hospital Association data from 1994 to 2010, we find that residents are inputs in all rural and public non-teaching hospitals, but they are outputs in urban-area not-for-profit teaching hospitals. We also demonstrate that the status of residents is related to the case-mix index and can vary with hospital size.  相似文献   
999.
    
This article considers an equilibrium search model, where firms post wages using information on workers' employment status. Earnings differentials between workers of different employment statuses are driven by firms' ability to discriminate workers' reservation wages. I study how these wage policies depend on firms' and workers' characteristics, and how these policies affect the wage distribution. The model delivers new predictions for the amount of wage dispersion that can be generated with search models and provides a better representation of the left tail of the wage distribution in the presence of a legal minimum wage than standard equilibrium search models.  相似文献   
1000.
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