全文获取类型
收费全文 | 14383篇 |
免费 | 329篇 |
专业分类
财政金融 | 3001篇 |
工业经济 | 1088篇 |
计划管理 | 2292篇 |
经济学 | 3087篇 |
综合类 | 153篇 |
运输经济 | 104篇 |
旅游经济 | 229篇 |
贸易经济 | 2314篇 |
农业经济 | 631篇 |
经济概况 | 1799篇 |
信息产业经济 | 2篇 |
邮电经济 | 12篇 |
出版年
2023年 | 74篇 |
2021年 | 85篇 |
2020年 | 194篇 |
2019年 | 255篇 |
2018年 | 343篇 |
2017年 | 336篇 |
2016年 | 310篇 |
2015年 | 211篇 |
2014年 | 332篇 |
2013年 | 1621篇 |
2012年 | 393篇 |
2011年 | 479篇 |
2010年 | 429篇 |
2009年 | 453篇 |
2008年 | 412篇 |
2007年 | 365篇 |
2006年 | 342篇 |
2005年 | 268篇 |
2004年 | 278篇 |
2003年 | 276篇 |
2002年 | 281篇 |
2001年 | 283篇 |
2000年 | 295篇 |
1999年 | 297篇 |
1998年 | 303篇 |
1997年 | 270篇 |
1996年 | 226篇 |
1995年 | 223篇 |
1994年 | 236篇 |
1993年 | 241篇 |
1992年 | 263篇 |
1991年 | 256篇 |
1990年 | 205篇 |
1989年 | 183篇 |
1988年 | 165篇 |
1987年 | 165篇 |
1986年 | 168篇 |
1985年 | 242篇 |
1984年 | 254篇 |
1983年 | 248篇 |
1982年 | 215篇 |
1981年 | 196篇 |
1980年 | 173篇 |
1979年 | 170篇 |
1978年 | 160篇 |
1977年 | 134篇 |
1976年 | 124篇 |
1975年 | 142篇 |
1974年 | 102篇 |
1973年 | 103篇 |
排序方式: 共有10000条查询结果,搜索用时 12 毫秒
121.
Jose S. Penalva Zuasti 《Review of Economic Dynamics》2001,4(4):790-822
This paper extends existing insurance results on the type of insurance contracts needed for insurance market efficiency to a dynamic setting. It introduces continuously open markets that allow for more efficient asset allocation. It also estimates the role of preferences and endowments in the classification of risks, which is done primarily in terms of the actuarial properties of the underlying risk process. The paper further extends insurability to include correlated and catastrophic events. Under these very general conditions the paper defines a condition that determines whether a small number of standard insurance contracts (together with aggregate assets) suffice to complete markets or one needs to introduce such assets as mutual insurance. Journal of Economic Literature Classification Numbers: D81, D99, G11. 相似文献
122.
Abstract The tables for the Friedman rank-test arc extended using a sampling method. A table is given for the traditional significance levels .01, .025, .05 and .10 for number of blocks equal to 7 and 8 and for treatments of size 6 and 7. A brief discussion of available tables is also included along with an example of an application. 相似文献
123.
Nukhet Harmancioglu Regina C. McNally Roger J. Calantone Serdar S. Durmusoglu 《R&D Management》2007,37(5):399-424
Given industry competitiveness, how do firms' new product development (NPD) process designs differ when responding to an innovation mandate? How do NPD design elements differ across firms when implementing NPD processes? These design elements are strategic business unit (SBU) senior management involvement, business case content, customer interactions, and cross‐functional integration. What are the consequences of different combinations of NPD process design elements for innovation productivity? We explore these questions via a collective case study of newly implemented NPD process designs at three different SBUs of a major US‐based international conglomerate, 1 year after receiving the mandate to grow through innovation. Our analysis suggests that industry competitiveness and firm characteristics influence the NPD process design as SBUs employ distinct combinations of NPD design elements. The differential emphasis on design elements leads to variation in process design and divergence in innovation productivity. 相似文献
124.
Maria Åkesson Carsten Sørensen Carina Ihlström Eriksson 《Scandinavian Journal of Management》2018,34(3):276-288
The digitalization of the newspaper industry represents a significant challenge for incumbent companies to engage new technologies. Many companies in the industry have had to seek new markets through digital technologies to survive. This paper explores how one of the largest Swedish newspapers, Aftonbladet, has strategically embraced new media and new markets. We report a decade of engaged scholarship based on interviews and archival analysis that covers 20 years of strategic acts at the company. We consider this effort as a case of organizational ambidexterity under digitalization. The analysis seeks to extend theoretical understanding of the interrelationships between strategic intent and technological choice. The paper contributes to the understanding of ambidexterity under digitalization by theoretically framing it in terms of strategic acts. The research suggests that digitalization implies a more complex ambidexterity interrelationship between old and new markets and technologies. As digitalization enables the loosening of previously tight couplings, the clear theoretical distinction between old and new, and critically, the unproblematic transition, is brought into question. The paper suggests replacing the notion of an orderly shift from the old to the new with ambidexterity under digitalization as a duality of both old and new undergoing continual reconfiguration. 相似文献
125.
A nonstationary simultaneous autoregressive model \({X^{(n)}_k=\alpha \Big(X^{(n)}_{k-1}+X^{(n)}_{k+1}\Big)+\varepsilon_k, k=1, 2, \ldots , n-1}\), is investigated, where \({X^{(n)}_0}\) and \({X^{(n)}_n}\) are given random variables. It is shown that in the unstable case α = 1/2 the least squares estimator of the autoregressive parameter converges to a functional of a standard Wiener process with a rate of convergence n 2, while in the stable situation |α| < 1/2 the estimator is biased but asymptotically normal with a rate n 1/2. 相似文献
126.
Pornsit Jiraporn Gary A. Miller Young S. Kim 《International Review of Financial Analysis》2008,17(3):622-634
Earnings management has been cast into negative light due to the recent corporate scandals and, therefore, is viewed as detrimental to the firm. Enron and Worldcom represent two of the most egregious cases of opportunistic earnings management that led to the largest bankruptcies in U.S. history. However, some argue that earnings management may be beneficial because it improves the information value of earnings by conveying private information to the stockholders and the public. We offer agency theory as a tool to distinguish between the opportunistic and beneficial uses of earnings management. The empirical evidence suggests that firms where earnings management occurs to a larger (less) extent suffer less (more) agency costs. Moreover, a positive relation is documented between firm value and the extent of earnings management. Taken together, the results reveal that earnings management is, on average, not detrimental. 相似文献
127.
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
128.
Hudon PS 《Nursing economic$》2003,21(5):233-236
Annually, thousands die unnecessarily as a result of preventable medical errors. Medical literature supports use of evidence-based standards to increase safety and improve the quality of health care. Nursing implications from three imposed standards are examined. 相似文献
129.
130.
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