全文获取类型
收费全文 | 28120篇 |
免费 | 612篇 |
国内免费 | 13篇 |
专业分类
财政金融 | 5163篇 |
工业经济 | 2298篇 |
计划管理 | 4676篇 |
经济学 | 5969篇 |
综合类 | 442篇 |
运输经济 | 202篇 |
旅游经济 | 535篇 |
贸易经济 | 4614篇 |
农业经济 | 1400篇 |
经济概况 | 3419篇 |
信息产业经济 | 1篇 |
邮电经济 | 26篇 |
出版年
2021年 | 176篇 |
2020年 | 307篇 |
2019年 | 424篇 |
2018年 | 583篇 |
2017年 | 603篇 |
2016年 | 567篇 |
2015年 | 397篇 |
2014年 | 637篇 |
2013年 | 2803篇 |
2012年 | 787篇 |
2011年 | 818篇 |
2010年 | 785篇 |
2009年 | 878篇 |
2008年 | 857篇 |
2007年 | 781篇 |
2006年 | 675篇 |
2005年 | 611篇 |
2004年 | 579篇 |
2003年 | 589篇 |
2002年 | 553篇 |
2001年 | 542篇 |
2000年 | 592篇 |
1999年 | 525篇 |
1998年 | 508篇 |
1997年 | 522篇 |
1996年 | 505篇 |
1995年 | 459篇 |
1994年 | 447篇 |
1993年 | 507篇 |
1992年 | 468篇 |
1991年 | 457篇 |
1990年 | 424篇 |
1989年 | 385篇 |
1988年 | 338篇 |
1987年 | 352篇 |
1986年 | 376篇 |
1985年 | 534篇 |
1984年 | 517篇 |
1983年 | 515篇 |
1982年 | 438篇 |
1981年 | 440篇 |
1980年 | 419篇 |
1979年 | 392篇 |
1978年 | 315篇 |
1977年 | 317篇 |
1976年 | 268篇 |
1975年 | 233篇 |
1974年 | 207篇 |
1973年 | 201篇 |
1972年 | 141篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
921.
922.
Models for which the MLE and the conditional MLE coincide 总被引:1,自引:0,他引:1
The MLE, CMLE and MMLE coincide in a linear regression model with fixed individual effects. In this case, there is no incidental parameters problem and the MLE is consistent. The equivalence of these estimators is important because CMLE=MLE implies both the consistency of the MLE and the efficiency of the CMLE. In general, we cannot expect to find a CMLE or MMLE, since there may be no fixed-dimension sufficient statistic for the effects, nor an appropriate transformation of the data whose distribution does not depend on the effects. However, we show that the MLE, CMLE and MMLE do coincide in systems of seemingly unrelated regressions and in systems of simultaneous equations. We establish this result for systems in which (exogenous) variables in addition to (or other than) the intercept may have coefficients which vary over individuals, provided that the set of such variables is the same in every equation.The financial support of the National Science Foundation is gratefully acknowledged. 相似文献
923.
Bell CS 《Medical economics》1992,69(11):172-4, 179-80, 182
924.
925.
The paper uses cointegration methods to test the market efficiency hypothesis (MEH) in the foreign exchange markets. Four exchange rates are considered-all relative to the US dollar: BP, DM, SF and JY. Survey data on expectations are used to see whether the violation of the MEH is due to expectational errors or risk premia. The results differ for the one-week ahead and the one-month ahead forecasts. With the weekly data we conclude that it is risk premia, and with the monthly data it is both expectational errors and risk premia that account for the violation of the MEH. Given the volatility of the exchange markets, it appears that forecasts over an extended period fail tests of rationality, but one-week ahead forecasts do not fail such tests. 相似文献
926.
Eusebius Pantja Pramudya Otto Hospes C. J. A. M. Termeer 《Bulletin of Indonesian Economic Studies》2017,53(1):57-82
By analysing the different roles of the Indonesian state in arranging finance schemes for palm-oil development since 1945, this article aims to answer two questions: What are these roles? And to what extent have they prioritised or balanced economic growth, social equity, and environmental protection? We conclude that the state has never been absent from the palm-oil industry but has had different and changing financing roles that are historically contingent and shaped by the evolving economic and political landscape. Furthermore, these roles reflect Indonesia’s priorities of achieving economic growth through palm-oil development, furthering social equity, and, recently, promoting environmental sustainability. 相似文献
927.
Mozambique’s tourism sector could play a key role in the country’s socio-economic development, especially in the region of Cabo Delgado where the demand for tourist services is expected to increase. Nonetheless, several constraints (e.g. the lack of adequate training) are hindering the capacity of local people to take full advantage of this opportunity. Qualitative research has been performed in order to align vocational training programmes with the needs of the emerging tourism sector. Local and foreign key informants were interviewed in order to gain a better understanding of training needs and to gain insights into developing training programmes that can enhance local people’s employability. The main findings highlight the lack of symbolisation of tourism and its correlates from local communities. Therefore, rather than just delivering technical skills, training programmes should also promote a ‘culture of tourism’ and a more favourable attitude towards ‘working in the tourism sector’. 相似文献
928.
Trophy. Goal. Dominated . Does priming individuals with competitive concepts such as these influence the temptation to cheat? We utilize a standard laboratory cheating task in a tournament setting and test whether nonconscious priming impacts the nature of cheating behavior. The results demonstrate an asymmetry in a winner‐take‐all setting: a competitive prime does not increase cheating to improve one's own outcome, but does significantly increase the willingness of an individual to sabotage a competitor. 相似文献
929.
Conditional Cash Transfer and School Outcomes: An Evaluation of the Pantawid Pamilyang Pilipino Program in Davao Oriental,Philippines 下载免费PDF全文
The present study adds to the empirical literature examining the effects of conditional cash transfers on school outcomes. Using school‐level and student‐level enrolment data from Davao Oriental Philippines, we evaluate the influence of the Pantawid Pamilyang Pilipino Program (also known as 4Ps), a social development policy program, on the growth rates in school enrolment outcomes. The findings show that 4Ps, on average, increased school enrolment of children by 1.12 percent. It was also apparent that using student‐level data as opposed to school‐level data revealed a more robust effect of 4Ps on school outcomes. We also found some school and socioeconomic characteristics influencing the change in school enrolments. Finally, this study highlights the role of government intervention programs in improving access to education in the poorest sector of the economy. 相似文献
930.
V. M. Kapitsyn O. A. Gerasimenko L. N. Andronova 《Studies on Russian Economic Development》2017,28(1):67-74
The article has analyzed trends in applying advanced manufacturing technologies in Russia in 2005–2014. The dynamics of technical process structures in the context of applications has been considered. The dynamics of the age structure and the structure of technologies in use in annual terms by the place of acquiring has been assessed. The start-up, availability, and removal balance of technologies has been formed, the effective start-up level, and possible ways to improve the state statistical indicators of innovation development have been determined. 相似文献