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21.
Chance Constrained Programming Formulations for Stochastic Characterizations of Efficiency and Dominance in DEA 总被引:8,自引:2,他引:8
Cooper William W. Huang Zhimin Lelas Vedran Li Susan X. Olesen Ole B. 《Journal of Productivity Analysis》1998,9(1):53-79
Pareto-Koopmans efficiency in Data Envelopment Analysis (DEA) is extended to stochastic inputs and outputs via probabilistic input-output vector comparisons in a given empirical production (possibility) set. In contrast to other approaches which have used Chance Constrained Programming formulations in DEA, the emphasis here is on joint chance constraints. An assumption of arbitrary but known probability distributions leads to the P-Model of chance constrained programming. A necessary condition for a DMU to be stochastically efficient and a sufficient condition for a DMU to be non-stochastically efficient are provided. Deterministic equivalents using the zero order decision rules of chance constrained programming and multivariate normal distributions take the form of an extended version of the additive model of DEA. Contacts are also maintained with all of the other presently available deterministic DEA models in the form of easily identified extensions which can be used to formalize the treatment of efficiency when stochastic elements are present. 相似文献
22.
This paper examines product policy in relation to the experience curve and product life cycle concepts in the context of the experience of the thirteen major firms in the Western European synthetic fibers industry. It examines the hypothesis based on Boston Consulting Group and the Profit Impact of Market Share (PIMS) evidence that late entrants to a market will be at a competitive disadvantage because they lack the accumulated experience of the pioneering firms. For each of the three main synthetic fibres, acrylic, nylon and polyester, it was found that the early entrants who established major market shares early in the growth phase of the product life cycle were able to maintain that leadership nearly twenty years later. In contrast not only did almost all the late entrants fail to achieve significant market shares but in the difficult market conditions between 1974 and 1981 they provided seven out of nine market withdrawals. 相似文献
23.
A bstract . In the eyes of European scholars, publicists and politicians who studied Henry George's work, he, as a social philosopher , had adopted the position of the natural law philosophers of the 18th century. The latter inspired the Declaration of Independence, the U.S. Constitution and its Bill of Rights, as well as the poiitical philosophy of Jeffersonian democracy , the ethos of the 18th and 19th century pioneer settlers. George rejected Social Darwinism. He saw natural law as the only true and reliable basis for a just social order. Like Karl Marx he mastered Ricardian economics ; unlike Marx, George made two factors the basis of his system, labor and land. George saw that each person had a natural right —and a natural imperative for survival —to apply his or her productive capacity to the earth –as living space and as storehouse of nutrients and raw materials. The person-land relationship , he discovered, lay at the basis of human culture. And so the land's rent , now monopolized by the few, had to be appropriated to meet the needs of society, most efficiently and justly by a land value tax. 相似文献
24.
James Albrecht Axel Anderson Eric Smith Susan Vroman 《International Economic Review》2007,48(2):641-664
We construct a model of the housing market in which agents differ in their flow values while searching. Agents enter the market relaxed (with high flow values) but move to a desperate state (low flow values) at a Poisson rate if they have not already transacted. We characterize the equilibrium steady‐state matching pattern and the joint distribution of price and time to sale (for sellers). The expected price conditional on time to sale falls with time spent on the market, whereas the conditional variance of price first rises and then falls with time on the market. 相似文献
25.
Susan Mudambi Author Vitae Raj Aggarwal Author Vitae 《Industrial Marketing Management》2003,32(4):317-325
As e-commerce evolves and gains power in the business-to-business (B2B) marketplace, what lies ahead for the industrial distributor? The fundamental issue from the distributor's point of view is how to compete more effectively and profitably, given the changing business environment of the new economy. This paper reviews the literature on the distributor's role and relationships and introduces a conceptual model of distributor viability. The model identifies sources of value that distributors offer to manufacturers and customers, including customer relationship management (CRM), production and operations management (POM), and knowledge management (KM). The paper explores the managerial implications of distributor relationships and sources of value. This provides the foundation for better understanding of the viability of industrial distributors in the new economy. 相似文献
26.
Both supply chain relationships and process connections between organizational units have been studied in business research, to enhance the understanding of supply chain integration, and to explore the differential outcomes of both types of connections for business and functional performance. However, the extant research remains deficient in two ways: within individual studies, researchers have operationalized supply chain connectivity unidimensionally, with the concept of connectivity constrained to either social relations or operational/process ties while disregarding the other viewpoint. Additionally, researchers have persistently designed studies to evaluate dyadic structures, while foregoing the larger, more intricate structures representative of complex supply chains. We address these issues by modeling supply chain connectivity as having multiple relational‐ and process‐based threads comprising linkages, and by empirically testing a set of theorized relationships describing vertical triadic supply chain networks (manufacturer, broker, retailer) within the U.S. restaurant industry. We find that increased supply chain connectivity improves chain performance, but this improvement is more directly attributable to process‐based linkages than relational linkages, which impact performance only through the process mediator variable, suggesting that current theories of interorganizational relationalism may lack complete conceptualization. Implications of these findings for managers and the academy are highlighted, and areas of follow‐on research are discussed. 相似文献
27.
Despite recent interest in how psychiatric disorders affect work outcomes, little is known about the role of personality disorders (PDs), which are poorly understood yet prevalent (15%) and impairing. We used nationally representative data for 12,457 men and 16,061 women to examine associations of PDs with any employment, full-time employment, chronic unemployment, being fired or laid off, and having trouble with a boss or co-worker. Antisocial, paranoid, and obsessive-compulsive PDs demonstrated the broadest patterns of associations with adverse outcomes. Findings suggest that PDs may have implications for the productivity of co-workers as well as that of the disordered employees themselves. 相似文献
28.
This article considers the model of voluntary, consensus based standardization as developed through the British Standards Institution (BSI) and its contribution to learning and productivity growth. It discusses the significant role played by professional engineers in the model's introduction, its extension at home, and its imitation overseas. It is argued that by 1931 the BSI catalogue of standards represented a considerable stock of codified knowledge whose growth reflected underlying aggregate technological opportunities, assisting in their transformation into technological advance. To help validate this claim, a measure of the size of the BSI catalogue of standards is incorporated into an econometric model of aggregate productivity growth in Britain. Findings show that the growth of the standards catalogue is associated with a substantial proportion of labour productivity growth over the period 1931–2009. Estimates relating to the short‐run dynamics involved are consistent with the idea that there are causal linkages running from standards to growth. When interpreting these findings, it is argued that the overall weight of historical evidence points to standardization—coordinated through the BSI—as providing an important path of learning for the British economy over the period considered. 相似文献
29.
Susan Fainstein 《International journal of urban and regional research》2015,39(1):157-167
The term resilience has become the popular formulation for plans that deal with preparedness for disaster. It implies adaptation rather than returning to a pre‐crisis state. Its use has been extended from environmental events to social and economic crises. Its fault is that it obfuscates underlying conflict and the distribution of benefits resulting from policy choices. Development of resilience policies is cloaked in complicated models showing complexity and indeterminacy. Marxist analysis provides insights that cut through the failure of these models to assign agency, but it does not offer approaches short of revolution to assist present‐day planning. The conclusion of the essay presents strategies that can lead to greater justice in planning to cope with the impacts of devastating events. 相似文献
30.
We examine investment in bank branches on the Indian subcontinent in 1939 and 1946. In 1947, the states of India and Pakistan were created from the erstwhile colony of British India. Partition was destabilizing to both economies. We use branch expansion as a proxy for entrepreneur's pre‐partition predictions of the future of these regions. Our results indicate there were no premonitions of economic dislocation. Banks tended to deepen their presence in regions which were already developed. But controlling for the level of 1931 development, branch placement was highest in exactly those regions, Bengal and the Punjab, which were to experience the greatest negative consequences from political division. After 1947, multiple banks failed; most failing banks were registered in the Punjab or Bengal region. In United India, businessmen saw as much promise in regions which were to become Pakistan as in regions which were to become India. After partition, the Pakistan regions were immediately more economically fragile. This event provides a general lesson. Economic integration had intensified over the years of British rule. The abrupt stop to integration harmed especially the smaller, less diversified region. Politicians should be wary of politically dividing regions which have evolved to function as integrated economic units. 相似文献