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21.
We compare the out-of-sample performance of monthly returns forecasts for two indices, namely the Dow Jones (DJ) and the Financial Times (FT) indices. A linear and a nonlinear artificial neural network (ANN) model are used to generate the out-of-sample competing forecasts for monthly returns. Stationary transformations of dividends and trading volume are considered as fundamental explanatory variables in the linear model and the input variables in the ANN model. The comparison of out-of-sample forecasts is done on the basis of forecast accuracy, using the Diebold and Mariano test [J. Bus. Econ. Stat. 13 (1995) 253.], and forecast encompassing, using the Clements and Hendry approach [J. Forecast. 5 (1998) 559.]. The results suggest that the out-of-sample ANN forecasts are significantly more accurate than linear forecasts of both indices. Furthermore, the ANN forecasts can explain the forecast errors of the linear model for both indices, while the linear model cannot explain the forecast errors of the ANN in either of the two indices. Overall, the results indicate that the inclusion of nonlinear terms in the relation between stock returns and fundamentals is important in out-of-sample forecasting. This conclusion is consistent with the view that the relation between stock returns and fundamentals is nonlinear. 相似文献
22.
Andreas Körber 《Heilberufe》2009,61(5):10-13
Ekzeme – eine h?ufig untersch?tzte Gefahr - Untersuchungen zeigen, dass die Lebensqualit?t durch berufsbedingte Hauterkrankungen
genauso eingeschr?nkt wird wie durch einen Myokardinfarkt oder Schlaganfall. Das ist für Pflegende deshalb so bedeutsam, weil
gerade in Pflegeberufen Kontakt zu potenziell Allergie ausl?senden Stoffen besteht. 相似文献
23.
The Tipping Point of Design: How Product Design and Brands Interact to Affect Consumers’ Preferences
Existing research on product design has demonstrated the importance of aesthetics in generating favorable consumer responses. However, the literature has only recently begun to explore if and to what extent the impact of product design is influenced by brand strength. Whereas some research indicates that strong brands may benefit less strongly from aesthetically attractive designs, other research suggests that attractive designs are more persuasive when they are paired with a strong brand. In this research, these two competing predictions were tested through three studies with German car buyers. In Study 1, participants were exposed to a fictitious car that was paired with a randomly chosen brand name. In Study 2, participants were presented with a set of existing cars and were asked to choose one. Both studies yield converging evidence and show that product design and brands interact in a positive fashion, suggesting that attractive designs exert a greater influence on consumers’ decision processes when they are accompanied by a strong brand. Study 3 extended these findings by demonstrating that strong brands only increase the impact of attractive designs when perceived risk is high but not when it is low. 相似文献
24.
The advertising industry is undergoing major changes as markets and clients become more global. Using the integration-responsiveness framework and the transnational framework, it is apparent that advertising agencies have a high need to be simultaneously integrated and responsive. This paper reports on a series of depth interviews with international agency leaders intended to gain an assessment of both the extent to which their firms are responding to these important but conflicting needs and the appropriateness of the framework for understanding the strategic options available for ad agency management. The findings indicate that the agencies have tried to modify their strategies to accommodate both kinds of pressures. However, their success in this regard is questioned and other broader strategic concerns are considered. 相似文献
25.
Although the First World War was ultimately decided in the west, historians have emphasized the importance of the often ‘forgotten’ Eastern Front in understanding its complex evolution. This article examines the perception of contemporary foreign exchange traders concerning the relative importance of the Eastern Front over time. Using a newly compiled dataset on prisoners of war and on soldiers killed and wounded, we show that traders were concerned with casualties on both fronts, recognizing the significance of the two‐front war in the early war years. From the autumn of 1916 onwards, traders seemed to believe the key to winning the war lay in the west only. 相似文献
26.
Chen Tao Karathanasopoulos Andreas Ko Stanley Iat-Meng Lo Chia Chun 《Review of Quantitative Finance and Accounting》2020,54(2):735-751
Review of Quantitative Finance and Accounting - The number 8 is considered lucky under the Chinese culture. This paper tries to examine whether investors hold such superstitious belief in the Hong... 相似文献
27.
Andreas Chai 《Journal of Bioeconomics》2011,13(3):181-203
This paper posits that significant changes in 19th century British recreational travel patterns resulted from a change in
the manner in which tourists used entertaining stimuli in order to attain pleasure. Consumers no longer merely viewed arousing
stimuli, but attempted to use them to produce emotional states of being which they could partially modify to intensify pleasurable
feelings (Damasio, Looking for Spinoza: Joy, sorrow, and the feeling brain, William Heinemann, 2003). The impetus for this modification stemmed from an increasing awareness that emotional responses could be to some degree
self-cultivated, as embodied in the Romantic ethos that become popular at the time via the emergence of the paperback novel
and magazine industry (Campbell, The romantic ethic and the spirit of modern consumerism, Blackwell, 1987). By learning how to manipulate and modify mental images in a way that may not necessarily correspond with objective reality,
Romantic tourists learned to elicit pleasure through engaging of their imagination. Such a change in the mode of pleasure
seeking had important long run economic consequences for tourist regions throughout the European continent. 相似文献
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30.
Andreas Steiner 《Empirical Economics》2011,40(1):165-176
This article investigates empirically the determinants of central banks’ reserve holdings for a large panel data set of developing
and transition countries covering the period from 1975 to 2003. It estimates both a static and a dynamic relationship and
applies estimators for homogeneous and heterogeneous panel data. Thereby, it examines the extent to which conclusions of panel
data studies on the determinants of international reserve holdings are robust to the inclusion of dynamics as well as to the
consideration of heterogeneity across countries. The results show that the neglect of dynamics and heterogeneity in country
behaviour may lead to misleading inferences. Independently of the chosen estimation method, the findings suggest that trade
openness and external debt are robust determinants of the level of reserves. Central banks take precautionary measures against
the downside of the increasing international economic integration. 相似文献