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31.
Bahadır Yüzbaşı Mohammad Arashi S. Ejaz Ahmed 《Revue internationale de statistique》2020,88(1):229-251
In this study, we suggest pretest and shrinkage methods based on the generalised ridge regression estimation that is suitable for both multicollinear and high-dimensional problems. We review and develop theoretical results for some of the shrinkage estimators. The relative performance of the shrinkage estimators to some penalty methods is compared and assessed by both simulation and real-data analysis. We show that the suggested methods can be accounted as good competitors to regularisation techniques, by means of a mean squared error of estimation and prediction error. A thorough comparison of pretest and shrinkage estimators based on the maximum likelihood method to the penalty methods. In this paper, we extend the comparison outlined in his work using the least squares method for the generalised ridge regression. 相似文献
32.
Jonathan Wakefield Taylor Okonek Jon Pedersen 《Revue internationale de statistique》2020,88(2):398-418
Small area estimation (SAE) entails estimating characteristics of interest for domains, often geographical areas, in which there may be few or no samples available. SAE has a long history and a wide variety of methods have been suggested, from a bewildering range of philosophical standpoints. We describe design-based and model-based approaches and models that are specified at the area level and at the unit level, focusing on health applications and fully Bayesian spatial models. The use of auxiliary information is a key ingredient for successful inference when response data are sparse, and we discuss a number of approaches that allow the inclusion of covariate data. SAE for HIV prevalence, using data collected from a Demographic Health Survey in Malawi in 2015–2016, is used to illustrate a number of techniques. The potential use of SAE techniques for outcomes related to coronavirus disease 2019 is discussed. 相似文献
33.
《Economic Systems》2020,44(4):100780
This study examines the role of economic governance in the relationship between public spending, private investment, and economic growth in Vietnam at the provincial level. The study data consist of sixty-two Vietnamese provinces for the period 2006–2015. Some notable results are attained by applying a sequential (two-stage) estimation. First, the marginal benefits to economic growth of increased Vietnamese provincial government expenditures may be constrained because of the inefficiency of expenditures on education, business services, and public administration. Second, public spending and private investment are found to be substitutes at the provincial level. Third, based on the Provincial Competitiveness Index (PCI) ranking, used as a proxy for provincial public governance in Vietnam, the significance of public governance can be observed. The study concludes that good governance, characterized by different attributes, such as lower informal charges, greater transparency, and unbiased policy, plays a critical role in improving the impact of government expenditure on economic growth in Vietnamese provinces, particularly through its interactions with private sector investment. 相似文献
34.
Tülin Erdem Kannan Srinivasan Wilfred Amaldoss Patrick Bajari Hai Che Teck Ho Wes Hutchinson Michael Katz Michael Keane Robert Meyer Peter Reiss 《Marketing Letters》2005,16(3-4):225-237
We explore issues in theory-driven choice modeling by focusing on partial-equilibrium models of dynamic structural demand
with forward-looking decision-makers, full equilibrium models that integrate the supply side, integration of bounded rationality
in dynamic structural models of choice and public policy implications of these models. 相似文献
35.
DIFFUSION MODELS FOR EXCHANGE RATES IN A TARGET ZONE 总被引:2,自引:0,他引:2
We present two analytically tractable diffusion models for an exchange rate in a target zone. One model generalizes a model proposed by De Jong, Drost, and Werker (2001) to allow asymmetry between the currencies which is often an important feature of data. Estimation of the model parameters by the method of Kessler and Sørensen (1999) using eigenfunctions of the generator is investigated and shown to give well-behaved estimators that are easy to calculate. The method is well suited to the models because the eigenfunctions are known so that explicit estimating functions are obtained, and because the state space is a finite interval, for which it is known that the method can be made arbitrarily efficient by including sufficiently many eigenfunctions. The model fits data on exchange rates in the European Monetary System well. In particular, the asymmetry parameter is significantly different from zero for three out of four currencies. An alternative diffusion model is presented with similarly nice properties, but with different dynamics that allow constant volatility near the boundaries of the target zone. No-arbitrage pricing of derivative assets is considered, and the effect of realignments is briefly discussed. 相似文献
36.
The euro illusion is a transient phenomenon that consists of currency-related asymmetries in the intuitive judgment of product
prices made by consumers. The results of a cross-country study in the third year after the introduction of the euro show a
strong price estimation asymmetry in a country with an extreme exchange rate (Italy) and a weaker effect in a country in which
the nominal values of the new and the old currency are much closer (Ireland). These results rule out proposed explanations
of the euro illusion in price estimation that assume the sole influence of plausible anchors (reference prices stored in memory
within the plausible price range), supporting instead accounts also endorsing the role of implausible anchors (reference prices
outside the plausible price range). Beyond contributing to our theoretical understanding of the euro illusion, this research
starts to unveil the interplay between structural factors (i.e., the currency exchange rate) and psychological mechanisms
that produce long-lasting difficulties for consumers after a monetary changeover.
相似文献
Rob RanyardEmail: |
37.
在国际学术界,用于解释可转换债券发行动机的研究成果有资产替代假说、评估风险假说,后门融资假说与阶段性融资假说。同国外比起来,我国在可转换债券发行动机方面的研究还较少,研究方法的角度还有待改善。全面深入地弄清可转换债券发行动机,无论对发行可转换债券企业,还是对鼓励和扶持可转换债券都很有意义。 相似文献
38.
39.
M. Ben-Akiva M. Bradley T. Morikawa J. Benjamin T. Novak H. Oppewal V. Rao 《Marketing Letters》1994,5(4):335-349
Our objective is to develop a unifying framework for the incorporation of different types of survey data in individual choice models. We describe statistical methodologies that combine multiple sources of data in the estimation of individual choice models and summarize the current state of the art of data combination methods that have been used with market research data. The most successful applications so far have combined revealed and stated preference data. We discuss different types of market and survey data and provide examples of research contexts in which one might wish to combine them. Although these methods show a great deal of promise and have already been used successfully in a number of applications, several important research issues remain. A discussion of these issues and directions for further research conclude the paper. 相似文献
40.
Mehta Nitin Rajiv Surendra Srinivasan Kannan 《Quantitative Marketing and Economics》2004,2(2):107-140
We propose a structural model to investigate the impact of forgetting on consumers' brand choice decisions in frequently purchased
products. Forgetting results in consumers imperfectly recalling their prior brand evaluations when making a purchase decision
in the category. We conceptualize the imperfect recall by positing that consumers recall their prior evaluations with noise.
Based on prior research in the behavioral area, we characterize the extent of forgetting as an increasing and concave function
of time. Our framework generates analytical results on the impact of forgetting on consumers' brand evaluations and their
consequent purchase behavior. We calibrate our model using scanner panel data for liquid detergents. Furthermore, we obtain
insights into the consumers' extent of forgetting in the category, extent of learning, predicted price elasticities and implications
on state dependence and habit persistence. Our results underscore the importance of modeling consumers' ability to recall
only imperfectly. 相似文献