全文获取类型
收费全文 | 31774篇 |
免费 | 783篇 |
专业分类
财政金融 | 5646篇 |
工业经济 | 2248篇 |
计划管理 | 5421篇 |
经济学 | 7152篇 |
综合类 | 317篇 |
运输经济 | 197篇 |
旅游经济 | 505篇 |
贸易经济 | 5334篇 |
农业经济 | 1456篇 |
经济概况 | 4020篇 |
邮电经济 | 261篇 |
出版年
2021年 | 209篇 |
2020年 | 328篇 |
2019年 | 431篇 |
2018年 | 695篇 |
2017年 | 682篇 |
2016年 | 645篇 |
2015年 | 476篇 |
2014年 | 706篇 |
2013年 | 3171篇 |
2012年 | 881篇 |
2011年 | 975篇 |
2010年 | 830篇 |
2009年 | 932篇 |
2008年 | 966篇 |
2007年 | 851篇 |
2006年 | 764篇 |
2005年 | 713篇 |
2004年 | 697篇 |
2003年 | 696篇 |
2002年 | 661篇 |
2001年 | 638篇 |
2000年 | 649篇 |
1999年 | 544篇 |
1998年 | 544篇 |
1997年 | 518篇 |
1996年 | 520篇 |
1995年 | 464篇 |
1994年 | 518篇 |
1993年 | 520篇 |
1992年 | 482篇 |
1991年 | 516篇 |
1990年 | 465篇 |
1989年 | 392篇 |
1988年 | 394篇 |
1987年 | 390篇 |
1986年 | 407篇 |
1985年 | 583篇 |
1984年 | 542篇 |
1983年 | 552篇 |
1982年 | 529篇 |
1981年 | 462篇 |
1980年 | 449篇 |
1979年 | 464篇 |
1978年 | 392篇 |
1977年 | 354篇 |
1976年 | 290篇 |
1975年 | 280篇 |
1974年 | 261篇 |
1973年 | 244篇 |
1972年 | 205篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
201.
202.
Repeated measurements often are analyzed by multivariate analysis of variance (MANOVA). An alternative approach is provided by multilevel analysis, also called the hierarchical linear model (HLM), which makes use of random coefficient models. This paper is a tutorial which indicates that the HLM can be specified in many different ways, corresponding to different sets of assumptions about the covariance matrix of the
repeated measurements. The possible assumptions range from the very restrictive compound symmetry model to the unrestricted
multivariate model. Thus, the HLM can be used to steer a useful middle road between the two traditional methods for analyzing repeated measurements. Another
important advantage of the multilevel approach to analyzing repeated measures is the fact that it can be easily used also
if the data are incomplete. Thus it provides a way to achieve a fully multivariate analysis of repeated measures with incomplete
data.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献
203.
Sampling equilibrium, with an application to strategic voting 总被引:1,自引:0,他引:1
We suggest an equilibrium concept for a strategic model with a large number of players in which each player observes the actions of only a small number of the other players. The concept fits well situations in which each player treats his sample as a prediction of the distribution of actions in the entire population, and responds optimally to this prediction. We apply the concept to a strategic voting model and investigate the conditions under which a centrist candidate can win the popular vote although his strength in the population is smaller than the strengths of the right and left candidates. 相似文献
204.
Swamy P.A.V.B. Tavlas George S. Lutton Thomas J. 《Journal of Productivity Analysis》2003,20(1):97-114
This paper introduces a simple, yet rich, measure of efficiency changes based on the revenue-generating-ability (RGA) principle. Using this principle, we explain the connections between efficiency changes and the variables, such as pretax profits, interest expense, non-interest expense, profit margins, loan loss provision, and asset quality. These connections are used to explain earnings differences between small and large commercial banks. 相似文献
205.
This paper discusses the statistical issues that arise in conducting an economic damages analysis in the context of a litigation matter involving copyrights. Calculating damages in copyright cases turns out to be a natural application for econometric modelling methods. Surprisingly, elementary statistical issues can be a source of significant debate between the experts in such matters. In this paper, we present a case study and illustrate how issues such as interpretation of p -values and what "rejection of the null hypothesis" really "means" in such matters. 相似文献
206.
Alex J. Koning 《Statistica Neerlandica》2006,60(3):327-338
In this paper, a general method of constructing control charts for preliminary analysis of individual observations is presented, which is based on recursive score residuals. A simulation study shows that certain implementations of these charts are highly effective in detecting assignable causes. 相似文献
207.
Making sense of corporate social responsibility in international business: experiences from Shell 总被引:1,自引:0,他引:1
International business organizations are regularly addressed on their corporate social responsibility (CSR). As illustrated in this paper, it is not yet clear exactly what CSR means to organizations and how to deal with it. In this paper, the authors explore how a sensemaking approach helps to understand the business challenges of CSR within an organizational context. The theories of Karl Weick are applied to the experiences of CSR in Royal Dutch Shell. The authors argue that the key to CSR in international business organizations is to engage stakeholders and start a process of joint sensemaking. Three main competencies are crucial in this: the competency to engage stakeholders through listening and understanding; the creation of an organizational language so that CSR makes sense to members of the organization; and recognizing the momentum of taking action. 相似文献
208.
We re‐examine the benefits of using a broader set of research methods to address key questions associated with the resource‐based view (RBV) of the firm. In responding to Levitas and Chi, we consider how research inside organizations can complement and augment research relying on secondary data. Copyright © 2002 John Wiley & Sons, Ltd. 相似文献
209.
Portfolio value‐at‐risk (PVAR) is widely used in practice, but recent criticisms have focused on risks arising from biased PVAR estimates due to model specification errors and other problems. The PVAR estimation method proposed in this article combines generalized Pareto distribution tails with the empirical density function to model the marginal distributions for each asset in the portfolio, and a copula model is used to form a joint distribution from the fitted marginals. The copula–mixed distribution (CMX) approach converges in probability to the true marginal return distribution but is based on weaker assumptions that may be appropriate for the returns data found in practice. CMX is used to estimate the joint distribution of log returns for the Taiwan Stock Exchange (TSE) index and the associated futures contracts on SGX and TAIFEX. The PVAR estimates for various hedge portfolios are computed from the fitted CMX model, and backtesting diagnostics indicate that CMX outperforms the alternative PVAR estimators. © 2006 Wiley Periodicals, Inc. Jrl Fut Mark 26:997–1018, 2006 相似文献
210.
This study was undertaken to investigate the inclusion of a kosher claim in an advertisement for a familiar and unfamiliar
brand of breakfast cereal. Results showed that, as hypothesized, for the familiar brand a kosher third party endorsement led
to significantly more kosher attribute-related thoughts, more favorable product attitude and greater purchase intention. For
the unfamiliar brand, no significant impact upon these dependent measures was observed given a kosher endorsement. Findings
are interpreted from a cognitive perspective regarding the salience of the kosher attribute in a product familiarity context.
Managerial implications are discussed. 相似文献