全文获取类型
收费全文 | 1864篇 |
免费 | 59篇 |
专业分类
财政金融 | 443篇 |
工业经济 | 144篇 |
计划管理 | 292篇 |
经济学 | 414篇 |
综合类 | 19篇 |
运输经济 | 19篇 |
旅游经济 | 30篇 |
贸易经济 | 328篇 |
农业经济 | 82篇 |
经济概况 | 152篇 |
出版年
2022年 | 8篇 |
2021年 | 21篇 |
2020年 | 32篇 |
2019年 | 39篇 |
2018年 | 58篇 |
2017年 | 56篇 |
2016年 | 55篇 |
2015年 | 42篇 |
2014年 | 42篇 |
2013年 | 209篇 |
2012年 | 63篇 |
2011年 | 70篇 |
2010年 | 59篇 |
2009年 | 81篇 |
2008年 | 70篇 |
2007年 | 78篇 |
2006年 | 67篇 |
2005年 | 58篇 |
2004年 | 64篇 |
2003年 | 50篇 |
2002年 | 61篇 |
2001年 | 47篇 |
2000年 | 47篇 |
1999年 | 39篇 |
1998年 | 33篇 |
1997年 | 38篇 |
1996年 | 39篇 |
1995年 | 37篇 |
1994年 | 30篇 |
1993年 | 23篇 |
1992年 | 28篇 |
1991年 | 26篇 |
1990年 | 19篇 |
1989年 | 18篇 |
1988年 | 13篇 |
1987年 | 13篇 |
1986年 | 15篇 |
1985年 | 16篇 |
1984年 | 26篇 |
1983年 | 11篇 |
1982年 | 14篇 |
1981年 | 9篇 |
1980年 | 5篇 |
1979年 | 12篇 |
1978年 | 17篇 |
1977年 | 15篇 |
1976年 | 12篇 |
1975年 | 8篇 |
1974年 | 7篇 |
1973年 | 9篇 |
排序方式: 共有1923条查询结果,搜索用时 0 毫秒
991.
Central city households who subsidize local public sector goods through local property taxes have an incentive to flee from the city or to change the jurisdiction's boundary. We focus on the latter case, a neighborhood's attempt to deannex from a central city and subsequently annex to a suburb. The difficult theoretical problem is to explain why a large percentage of central city voters supported the deannexation proposal, most apparently becoming worse off if the issue was approved. While no explanation is consistent with fully rational voters, it appears that high property value owning voters supported the attempt in hope of being part of the next wave of deannexers. 相似文献
992.
If technological roadmapping is important in the process of rapid technology commercialization, and if a method tailored to roadmapping nascent disruptive technologies does not exist, and if these very same disruptive technologies portend to be the future economic engines for firms, countries, and regions, then there is cause for concern. This article seeks to shed some light on the process in industrial disruptive technology roadmapping by focusing on the fundamental differences between sustaining and disruptive technologies. This article investigates the utility of theoretical and practitioner traditional technology roadmapping tools in an international industrial roadmapping effort focusing on microtechnology and top-down nanotechnology. I then modify the traditional technology roadmapping approaches generating a model for an industrial worldwide disruptive technology roadmapping process. I utilize the International Industrial Microsystems and Top-Down Nanosystems Roadmap (IIMTDNR) effort, which included nearly 400 people, from nearly as many firms, from over five continents and was developed over a 5-year period. The IIMTDNR process is used to provide the basis for a model for a commercial disruptive technology roadmapping process. 相似文献
993.
In this paper, we study the short-run and long-run comovement between prices and real activity in the G7 countries during the postwar period using vector autoregressive systems and frequency-domain filters. We find several patterns that are robust across countries and time periods. Typically, the correlation coefficients at long-run horizons are significantly negative and the correlation coefficients at short-run horizons are substantially higher. Additionally, there is evidence of positive correlation at short-run forecast horizons for some countries. 相似文献
994.
In their recent article in the Quarterly Journal of Austrian Economics, Bagus and Howden (2010) present “quibbles” with fractional-reserve free banking. Specifically, they raise what they call “unaddressed issues” in
this system, with a particular emphasis on Selgin (1988). We deem their arguments to be more substantial than “quibbles” and see them as part of a longstanding debate about fundamental
aspects of monetary theory. We respond to their objections and attempt to specify how debate between the two sides might proceed
more productively. 相似文献
995.
Hannah C. Silver Steven B. Caudill Franklin G. Mixon Jr. 《Economics of Transition》2017,25(2):165-184
This study explores the life satisfaction of Egyptians – with a particular focus on the impact of higher education on happiness – both before and after that country's Arab Spring of 2011. Ordered logit results point to positive and significant relationships between life satisfaction and both perceived high incomes and the human capital variable, good health, for the pre- and post-Arab Spring periods in Egypt, thus confirming prior studies of transition economies. For a second human capital variable – secondary education – the results indicate a positive and significant relationship with happiness in pre-Arab Spring Egypt, while that relationship for post-Arab Spring Egypt is negative and significant. This particular finding is probably the result of the failure of educated Egyptians to achieve a better life despite their investments in human capital – due to the lack of opportunity that accompanied the failure of the country's Arab Spring to change the political and social environment. 相似文献
996.
This study examines relationships between group influence activities and the performance of strategic initiatives. Theory suggests that the strength of these relationships is contingent upon the degree of exploration inherent in an initiative's goals. An analysis of 96 initiatives in three large firms supports the moderating role of exploration for the use of formal authority and coalition building, demonstrating that these group influence activities are more important to performance in more exploratory initiatives. Although the direct relationship between rational justification and initiative performance is significant, there is no evidence of the moderating effect for this form of influence. The results show how groups associated with strategic initiatives use different forms of influence to reduce the investment and political uncertainties that limit initiative performance. Copyright © 2011 John Wiley & Sons, Ltd. 相似文献
997.
Dagoberto Garza Yahel Giat Steven T. Hackman 《Economics of Innovation and New Technology》2013,22(7):682-709
We compare two common government R&D support programs, R&D tax credits and direct R&D grants. To study their effectiveness and the extent to which their design matters, we analyze these programs within a dynamic equilibrium model of imperfectly competitive industries. Adopting comprehensive welfare measures that take into account government, producer and consumer surpluses, we find that both schemes exhibit positive social returns. Mid-range R&D-intensive sectors exhibit higher social returns than either high or low R&D-intensive sectors. Both incentive schemes generate positive measures of R&D input additionality of magnitudes consistent with empirical R&D research. However, R&D grants that require firms to allocate subsidy funds to R&D spur less R&D than a more flexible R&D tax credit. Subsidy schemes can even induce competing firms to over-spend on R&D, generating negative producer surplus and possibly negative social returns. 相似文献
998.
Steven Bond-Smith 《Economics of Innovation and New Technology》2013,22(8):816-840
ABSTRACTThis article analyses the relationship between compatibility and innovation in markets with network effects using a model of competition with endogenous R&D, commercialization and compatibility. Compatibility is a mutual decision between firms and demand is partially dependent on overall consumption across compatible networks. Incumbent acquisition of an innovation or profit from entry provides entrepreneurs with an incentive for developing technological improvements and entrepreneurs receive greater returns if larger incumbents offer compatibility with their installed base. But for sufficiently weak network effects a large incumbent increases demand for its own product by denying compatibility to rivals. As a result, a credible threat of incompatibility reduces the entrepreneur's reserve to sell an innovation, but can also increase offers from smaller incumbents to acquire the innovation if it also avoids an incompatibility response from a larger incumbent. In response, entrepreneurs adjust their research effort in order to target a favourable compatibility regime that maximizes profit from entry or offers to acquire the innovation from incumbents. This leads to a complex relationship between the strength of network effects, innovation incentives, the entrepreneur's ambition for improvement and potentially disrupting the compatibility regime. 相似文献
999.
Classic rangeland theory advocates stocking rangelands at relatively low and constant levels. This theory has been labelled inappropriate for savanna rangelands, because savannas are strongly influenced by stochastic processes. Opportunistic strategies that force animal numbers to track available forage have been proposed as an alternative management paradigm. However, no studies have examined whether these opportunistic strategies are sustainable or optimal. We developed a simulation model of a savanna rangeland to identify optimal, sustainable strategies for the management of extensive rangelands. We optimised the utility of agents who are motivated by economic, production or ecological factors under both deterministic and stochastic conditions. In all cases we found that it was optimal to manage the system conservatively and not opportunistically. Moreover, it was optimal to manage more conservatively under stochastic conditions. Key elements of the conservative strategy were to stock at low levels and to use fire to control tree abundance and thereby maintain the system in a grass dominated state. We conclude that opportunistic strategies of range management although intuitively appealing are not optimal. 相似文献
1000.
Steven T. Yen 《Applied economics》2013,45(30):3921-3934
We investigate the effect of physical activity on bodyweight and the gender differences in such effects, following the copula approach to endogenous switching regression. Using data from the 2006 Behavioral Risk Factor Surveillance System (BRFSS), we find differentiated effects of socio-demographic variables on exercise and on Body Mass Indexes (BMIs), and differentiated effects of exercise on BMI, between genders. Regular exercise, on average, decreases BMI by 1.78 for women and 1.01 for men. Food price away from home has negative effects on BMI of both men and women. 相似文献