全文获取类型
收费全文 | 3744篇 |
免费 | 217篇 |
专业分类
财政金融 | 469篇 |
工业经济 | 159篇 |
计划管理 | 804篇 |
经济学 | 1138篇 |
综合类 | 36篇 |
运输经济 | 105篇 |
旅游经济 | 109篇 |
贸易经济 | 826篇 |
农业经济 | 132篇 |
经济概况 | 181篇 |
邮电经济 | 2篇 |
出版年
2024年 | 5篇 |
2023年 | 55篇 |
2022年 | 58篇 |
2021年 | 67篇 |
2020年 | 138篇 |
2019年 | 191篇 |
2018年 | 262篇 |
2017年 | 305篇 |
2016年 | 235篇 |
2015年 | 125篇 |
2014年 | 188篇 |
2013年 | 664篇 |
2012年 | 187篇 |
2011年 | 159篇 |
2010年 | 175篇 |
2009年 | 158篇 |
2008年 | 138篇 |
2007年 | 103篇 |
2006年 | 97篇 |
2005年 | 97篇 |
2004年 | 74篇 |
2003年 | 62篇 |
2002年 | 59篇 |
2001年 | 52篇 |
2000年 | 34篇 |
1999年 | 33篇 |
1998年 | 34篇 |
1997年 | 24篇 |
1996年 | 12篇 |
1995年 | 20篇 |
1994年 | 14篇 |
1993年 | 8篇 |
1992年 | 6篇 |
1991年 | 12篇 |
1989年 | 8篇 |
1988年 | 4篇 |
1987年 | 4篇 |
1986年 | 4篇 |
1985年 | 8篇 |
1984年 | 8篇 |
1983年 | 9篇 |
1982年 | 6篇 |
1981年 | 6篇 |
1980年 | 5篇 |
1979年 | 3篇 |
1978年 | 4篇 |
1976年 | 3篇 |
1974年 | 3篇 |
1964年 | 2篇 |
1961年 | 2篇 |
排序方式: 共有3961条查询结果,搜索用时 62 毫秒
11.
László Csató 《Group Decision and Negotiation》2018,27(6):1011-1027
An axiomatic approach is applied to the problem of extracting a ranking of the alternatives from a pairwise comparison ratio matrix. The ordering induced by row geometric mean method is proved to be uniquely determined by three independent axioms, anonymity (independence of the labelling of alternatives), responsiveness (a kind of monotonicity property) and aggregation invariance, which requires the preservation of group consensus, that is, the pairwise ranking between two alternatives should remain unchanged if unanimous individual preferences are combined by geometric mean. 相似文献
12.
13.
Simón Sosvilla-Rivero 《Applied economics》2018,50(42):4540-4555
Expectations are at the centre of modern macroeconomic theory and policymakers. In this article, we examine the predictive ability and the consistency properties of macroeconomic expectations using data of the European Central Bank (ECB) Survey of Professional Forecasters (SPF). In particular, we provide evidence on the properties of forecasts for three key macroeconomic variables: the inflation rate, the growth rate of real gross domestic product and the unemployment rate. 相似文献
14.
The general consensus in the volatility forecasting literature is that high-frequency volatility models outperform low-frequency volatility models. However, such a conclusion is reached when low-frequency volatility models are estimated from daily returns. Instead, we study this question considering daily, low-frequency volatility estimators based on open, high, low, and close daily prices. Our data sample consists of 18 stock market indices. We find that high-frequency volatility models tend to outperform low-frequency volatility models only for short-term forecasts. As the forecast horizon increases (up to one month), the difference in forecast accuracy becomes statistically indistinguishable for most market indices. To evaluate the practical implications of our results, we study a simple asset allocation problem. The results reveal that asset allocation based on high-frequency volatility model forecasts does not outperform asset allocation based on low-frequency volatility model forecasts. 相似文献
15.
This paper proposes a multivariate distance nonlinear causality test (MDNC) using the partial distance correlation in a time series framework. Partial distance correlation as an extension of the Brownian distance correlation calculates the distance correlation between random vectors X and Y controlling for a random vector Z. Our test can detect nonlinear lagged relationships between time series, and when integrated with machine learning methods it can improve the forecasting power. We apply our method as a feature selection procedure and combine it with the support vector machine and random forests algorithms to study the forecast of the main energy financial time series (oil, coal, and natural gas futures). It shows substantial improvement in forecasting the fuel energy time series in comparison to the classical Granger causality method in time series. 相似文献
16.
Javier Carbonell Antonio Sánchez-Esguevillas Belén Carro 《Technology Analysis & Strategic Management》2018,30(1):113-129
This paper considers the Web as a big data container that can be used by Technology Observatories and administrations to track emerging issues and more specifically emerging technologies. It considers information that is available on the Internet for free from different sources, and proposes a framework that can be useful to characterise them and to detect patterns of dissemination. This framework is made up of 30 metrics obtained from different kinds of sources (general web, patents, scholars?…). Some of them are obtained directly as the number of hits retrieved by queries on a search engine, and other ones calculated by means of ratios. This paper contains the development of a complete case that utilises this framework to characterise emerging technologies included in the well-known Hype Cycle for Emerging Technologies, in this case the 2015 release1 and to analyze patterns of dissemination of these technologies on the Internet. 相似文献
17.
Servitization requires an important strategic shift to drive changes in the operations of manufacturing firms. Using a large-scale survey, the purpose of this paper is (1) to build and validate an operations strategy model of servitization confirming previous case study findings on servitization as a strategic action and (2) to explore the role of sustainability pressures in, and the sustainability performance effects of, pursuing service-based operations strategies. To reach these objectives, a dataset including the responses of 735 manufacturing plants from 21 different countries is analyzed using the PLS-SEM method. The results indicate that the sustainability pressures of stakeholders can push manufacturers to adopt a service-based operations strategy, materializing in the provision of both basic (product-oriented) and advanced (customer-oriented) services (BAS and ADS). Our analysis further indicates that while offering BAS is a precondition for ADS provision, only ADS can offer a competitive edge for manufacturers, both in terms of service and sustainability-related operational performance. 相似文献
18.
Small start‐up firms are the engine of job creation in early transition. We ask about differences in their growth across two different transition economies: Estonia, which experienced rapid destruction of pre‐existing firms, and the Czech Republic, which reduced the old sector gradually. We find that the majority of job growth corresponds to within‐industry reallocation. The within‐industry growth of small start‐up firms is similar in the two countries, in line with the convergence to Western industry firm‐size distributions. We also find similar patterns in the evolution of wage differentials between start‐ups and old firms and small differences in the extent of low‐wage employment in start‐ups across the two transition paths. JEL Classifications: J2, J3, J4, L1, O1, P2. 相似文献
19.
20.
Determining factors in entry choice for international expansion. The case of the Spanish hotel industry 总被引:2,自引:0,他引:2
Ana Ramn Rodríguez 《Tourism Management》2002,23(6)
The hotel sector, as a service industry where it is possible to separate capital investment from management skills, is a clear example of how internationalisation can be modelled without shareholding involvement through foreign direct investment. This paper is an empirical examination of the key factors influencing the decision process carried out by Spanish hotel companies in choosing an entry mode for international expansion. The main objective is to verify whether the concepts derived from the transaction-cost, agency and the strategic theories of organisational capability and knowledge in companies can really explain the mode of foreign expansion employed by the Spanish hotel sector. This study will allow comparison of findings on holiday resort hotel chains with other analyses on the international hotel industry. 相似文献