全文获取类型
收费全文 | 20166篇 |
免费 | 838篇 |
国内免费 | 385篇 |
专业分类
财政金融 | 2013篇 |
工业经济 | 971篇 |
计划管理 | 4425篇 |
经济学 | 4078篇 |
综合类 | 2148篇 |
运输经济 | 308篇 |
旅游经济 | 463篇 |
贸易经济 | 2616篇 |
农业经济 | 1947篇 |
经济概况 | 2420篇 |
出版年
2024年 | 90篇 |
2023年 | 455篇 |
2022年 | 458篇 |
2021年 | 678篇 |
2020年 | 859篇 |
2019年 | 634篇 |
2018年 | 564篇 |
2017年 | 776篇 |
2016年 | 741篇 |
2015年 | 692篇 |
2014年 | 1439篇 |
2013年 | 1778篇 |
2012年 | 1615篇 |
2011年 | 1826篇 |
2010年 | 1342篇 |
2009年 | 1252篇 |
2008年 | 1328篇 |
2007年 | 1200篇 |
2006年 | 1000篇 |
2005年 | 786篇 |
2004年 | 517篇 |
2003年 | 341篇 |
2002年 | 217篇 |
2001年 | 179篇 |
2000年 | 145篇 |
1999年 | 93篇 |
1998年 | 79篇 |
1997年 | 54篇 |
1996年 | 51篇 |
1995年 | 36篇 |
1994年 | 37篇 |
1993年 | 20篇 |
1992年 | 32篇 |
1991年 | 15篇 |
1990年 | 5篇 |
1989年 | 6篇 |
1988年 | 6篇 |
1987年 | 3篇 |
1986年 | 9篇 |
1985年 | 14篇 |
1984年 | 11篇 |
1983年 | 2篇 |
1982年 | 2篇 |
1981年 | 2篇 |
排序方式: 共有10000条查询结果,搜索用时 203 毫秒
201.
Internet Protocol Television (IPTV), the convergence services of television and Internet, is being rapidly developed around the world. The advent of digital technologies has changed the convergence market dramatically with the wide diffusion of the convergent services. Using the Technology Acceptance Model as a conceptual framework and method of logistic regression, this research analyzes the demand for IPTV by drawing data from 452 consumers. Individuals' responses to questions about whether they accept IPTV are collected and combined with observations of their socio-economic status and intrinsic/extrinsic factors modified from the Technology Acceptance Model. Results of logistic regression show two variables (intrinsic and extrinsic factors) that seem to explain what influences consumer behavior towards adopting IPTV. Overall, the logistic regression model explains over 50% of the variance in the IPTV adoption. The variances shed light on the multi-open platform environment that IPTV will forge. 相似文献
202.
现代企业之间的竞争,也是治理结构的竞争.在此,以文献梳理的形式,对公司治理的内涵及理论渊源进行阐述,并评析了治理模式、形成原因及趋同表现.在我国治理模式选择的问题上,提出应汲取西方治理经验并结合我国国情,在基于利益相关者的原则下,着力构建内部治理与外部治理相结合,以内部治理为主的中国特色公司治理结构. 相似文献
203.
204.
This paper proposes an asymmetric autoregressive conditional duration (ACD) model, which extends the ACD model of Engle and Russell (1998). The asymmetry consists of letting the duration process depend on the state of the price process. If the price has increased, the parameters of the ACD model can differ from what they are if the price has decreased. The model is applied to the bid-ask quotes of two stocks traded on the NYSE and the evidence in favour of asymmetry is strong. Information effects (Easley and O'Hara 1992) are also empirically relevant. As the model is a transition model for the price process, it delivers `market forecasts' of where prices are heading. A trading strategy based on the model is implemented using tick-by-tick data.While remaining responsible for any error in this paper, the authors would like to thank R. Anderson, G. Le Fol, C. Gouriéroux, J. Jasiak, W. Pohlmeier, A. Roell, O. Scaillet, S. Wei and three anonymous referees for useful remarks and suggestions on previous versions. The authors would also like to thank A. Ruttiens from KBC-CBC for useful discussions on practical issues related to trading. Support of the European Commission Human Capital and Mobility Program through the network `Econometric inference using simulation methods' is gratefully acknowledged. This paper presents research results of the Belgian Program on Interuniversity Poles of Attraction initiated by the Belgian State, Prime Minister's Office, Science Policy Programming. The scientific responsibility is assumed by the authors. 相似文献
205.
Bertschek and Lechner (1998) propose several variants of a GMM estimator based on the period specific regression functions for the panel probit model. The analysis is motivated by the complexity of maximum likelihood estimation and the possibly excessive amount of time involved in maximum simulated likelihood estimation. But, for applications of the size considered in their study, full likelihood estimation is actually straightforward, and resort to GMM estimation for convenience is unnecessary. In this note, we reconsider maximum likelihood based estimation of their panel probit model then examine some extensions which can exploit the heterogeneity contained in their panel data set. Empirical results are obtained using the data set employed in the earlier study.
Helpful comments and suggestions by Irene Bertschek and Michael Lechner are gratefully acknowledged. This paper has also benefited from comments by two anonymous referees and from seminar participants at the Center for Health Economics at the University of York. Any remaining errors are the responsibility of the author. 相似文献
206.
Joseph C. Cooper 《Environmental and Resource Economics》1993,3(6):563-579
This paper presents a dynamic model that determines the optimal number of deer hunting permit sales, subject to the objective of maximizing the discounted economic benefits stream from both the consumptive and nonconsumptive uses of deer. This bioeconomic model integrates economic benefits estimated using the dichotomous choice contingent valuation method with biological growth constraints on deer. Using a hunting zone in California as a case study, the model found that the optimal levels of buck hunting permits sold should change on a rotational basis over time and that the current practice of not selling doe hunting permits for that zone is non optimal. 相似文献
207.
内地制药行业企业进入西藏市场对其自身发展壮大和西藏居民健康状况的改善具有双重的意义,因此对进入的战略模式选择的研究是至关重要的。本文分析了内地制药行业企业进入西藏市场的必要性、可行性,在此基础上研究了进入市场的四种主要战略模式选择,阐述了不同战略模式的特征。希望本文的研究能够给我国制药企业的发展和西藏的医疗卫生进步作出贡献。 相似文献
208.
目前绝大多数营销活动的预测都只能定性的做一些粗略的估计,还不能做到定量分析与管理,这给正确的销售规划带来了困难。本文根据市场运行的规律分析一个销售方和竞争对手的销量函数关系,指出影响销量的因素分为三类:市场因素、本方因素、对手因素,对连续型的数量关系用解微分方程组的方法推导出结论.对离散型数据关系也类推出数学表达式。给出了来源于实际的两个例子。该数学模型的特点是构造市场运动的结构关系,不需要大量的统计数据,简洁实用,可操作性强,准确性高,适应性强。从而为理论界以及销售管理者实施管理提供了一个定量、合理、高效的管理工具。 相似文献
209.
210.
The paper attempts to identify the telecom-sector performance indicators, relevant economic variables, and institutional characteristics
of a country that effect the process of privatization of state-owned telecom enterprises. Using standard duration analysis
of a panel data, we demonstrate that the privatization incentives are not only shaped by the mobility of financial capital
in a country but are also influenced by the degree of competitiveness of private sector participation in policy-making process.
The empirical results also reveal the significant impact of productive efficiency in telecom service provision on its course
to privatization.
We thank an anonymous referee for helpful comments and suggestions. We are solely responsible for all mistakes. 相似文献