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31.
This paper presents a comprehensive analysis of air services dynamics during the recent economic crisis. Through a regression analysis, we show that at the country scale, the change in the supply of seats is highly dependent on economic growth, confirming the cyclical nature of the air sector. Hence the crisis of air services has much more affected the USA, Europe and Japan than the rest of the world. However, many countries deviate from this general trend. In a second step, using the existing literature, we explain some of these deviating figures. National specificities and airline strategies seem to influence the intensity of the crisis. We argue that the intensity of the crisis in the US is due to the structural oversupply of the air sector. Through other cases, especially the Middle East, we show that hubbing strategies might reduce the impact of the crisis, or at least make it less dependent upon local economic dynamics. In contrast with other authors, we found no positive impact of the share of low-cost carriers on the supply during the crisis, despite their success in some specific contexts like between Europe and Morocco. 相似文献
32.
André Tchokogué Jean Nollet Nathalie Merminod Gilles Paché Véronique Goupil 《Business Strategy and the Environment》2018,27(3):336-358
This paper addresses the issue of how sustainable supply practices are actually used as a leverage for sustainable development (SD). In order to assess the level of sustainable supply management within an organization, the authors have reviewed the literature extensively and then developed a five‐step maturity model around five management dimensions. A qualitative exploratory approach based on two detailed case studies of organizations whose reputation for SD is recognized internationally has been used. This methodology allowed us to show (1) how sustainable supply practices could be used as a leverage for an organization's sustainable development approach and (2) that sustainable supply practices still have quite a distance to go with regards to the maturity model for sustainable supply, even in organizations that are often mentioned as leaders in the SD area. In these organizations, managers still emphasize environmental considerations, while neglecting practices that would make it possible to reach the three SD objectives simultaneously. Copyright © 2017 John Wiley & Sons, Ltd and ERP Environment 相似文献
33.
Gilles Zumbach 《Quantitative Finance》2013,13(4):441-456
This paper investigates the scaling dependencies between measures of ‘activity’ and of ‘size’ for companies included in the FTSE 100. The ‘size’ of companies is measured by the total market capitalization. The ‘activity’ is measured with several quantities related to trades (transaction value per trade, transaction value per hour, tick rate), to the order queue (total number of orders, total value), and to the price dynamic (spread, volatility). The outcome is that systematic scaling relations are observed: (1) the value exchanged by hour and value in the order queue have exponents of less than 1, respectively 0.90 and 0.75; (2) the tick rate and the value per transaction scale with the exponents 0.39 and 0.44; (3) the annualized volatility is independent of the size, and the tick-by-tick volatility decreases with the market capitalization with an exponent of ?0.23; (4) the spread increases with the volatility with an exponent of 0.94. A theoretical random walk argument is given that relates the volatility exponents to the exponents in points 1 and 2. 相似文献
34.
35.
Gilles Zumbach 《Quantitative Finance》2013,13(9):1459-1471
Abstract Long-term investments in bonds offer known returns, but with risks corresponding to defaults of the underwriters. The excess return for a risky bond is measured by the spread between the expected yield and the risk-free rate. Similarly, the risk can be expressed in the form of a default spread, measuring the difference between the yield when no default occurs and the expected yield. For zero-coupon bonds and for actual market data, the default spread is proportional to the probability of default per year. The analysis of market data shows that the yield spread scales as the square root of the default spread. This relation expresses the risk premium over the risk-free rate that the bond market offers, similarly to the risk premium for equities. With these measures for risk and return, an optimal bond allocation scheme can be built following a mean/variance utility function. Straightforward computations allow us to obtain the optimal portfolio, depending on a pre-set risk-aversion level. As for equities, the optimal portfolio is a linear combination of one risk-free bond and a risky portfolio. Using the scaling law for the default spread allows us to obtain simple expressions for the value, yield and risk of the optimal portfolio. 相似文献
36.
Persistent misalignments of the European exchange rates: some evidence from non-linear cointegration
The asymmetric and persistent adjustment of the European real exchange rates is investigated using the framework of non-linear cointegration. The episodes of slow mean-reversion dynamics over the period from 1979 to 1999 are explained. A test of unit root against STAR cointegration is proposed and some complete estimations and stochastic simulations of ESTAR models are presented. The presence of effective non-linear adjustment during the moving of the currencies to their long-run fundamental equilibrium exchange rate value is discussed. 相似文献
37.
Gilles Paché 《The Service Industries Journal》2013,33(2):175-188
For the last 20 years, large food retailers have had an important place in fast-moving consumer good sales. This article describes their buying strategies, focusing on supplier selection in the case of private label contracts. It introduces the concept of opportunism to explain recent and probably irreversible developments in retail buying organisations, integrating a growing number of technologists and scientists. New businesses, with close relationships to industrial purchasing, have appeared in the retailing industry. In the end, they will require a new ‘species’ of managers, able to simultaneously monitor logistical, technical and commercial interfaces between large food retailers and their private label producers. 相似文献
38.
Success of eco-labeling schemes, broadly defined, varies among products and across countries. Based on a simple theoretical framework, we show that the nature of environmental attributes among products (i.e., private versus public) and the consumer type (i.e., egoist versus altruist) shape the overall performance of such schemes. In addition, we demonstrate that altruistic consumers exhibiting a too high willingness to pay for the eco-labeled product can inadvertently prevent egoistic consumers from purchasing it, leading to a sub-optimal outcome in terms of environmental performance. Several policy and managerial implications are drawn. 相似文献
39.
A model is built in which, the more incomplete financial markets are, the more technological dualism is prevalent in the economy. The model is extended to show that, through dualism and technological choice, incomplete financial markets can have a negative impact on long-run growth. 相似文献
40.
A good deal online: The Impacts of acquisition and transaction value on E-satisfaction and E-loyalty
Anne-Françoise Audrain-Pontevia Gilles N’Goala Ingrid Poncin 《Journal of Retailing and Consumer Services》2013,20(5):445-452
Relying on Thaler's exchange theory, this research examines the unique effects of perceived transaction and acquisition values on consumer e-satisfaction and e-loyalty in an e-commerce setting, along with the moderating role of product/ service category. Overall, consumers' perceptions of transaction value lead to their e-dissatisfaction. Hence, obtaining a good deal does not have the same meaning and influence depending on the type of buying trip (exploratory or goal-directed). These results confirm Thaler's exchange theory's usefulness to analyzing the impact of perceived value on e-satisfaction and e-loyalty. Additionally, in a managerial perspective, this research underlines the importance of adapting promotional strategies to online contexts, since online purchase experience improves when there is an alignment between the customer's goals and the e-tailer’s online offering. 相似文献