全文获取类型
收费全文 | 10101篇 |
免费 | 633篇 |
国内免费 | 74篇 |
专业分类
财政金融 | 1162篇 |
工业经济 | 410篇 |
计划管理 | 1553篇 |
经济学 | 4190篇 |
综合类 | 685篇 |
运输经济 | 27篇 |
旅游经济 | 60篇 |
贸易经济 | 805篇 |
农业经济 | 638篇 |
经济概况 | 1278篇 |
出版年
2024年 | 25篇 |
2023年 | 126篇 |
2022年 | 95篇 |
2021年 | 172篇 |
2020年 | 376篇 |
2019年 | 368篇 |
2018年 | 238篇 |
2017年 | 327篇 |
2016年 | 288篇 |
2015年 | 363篇 |
2014年 | 750篇 |
2013年 | 899篇 |
2012年 | 814篇 |
2011年 | 1067篇 |
2010年 | 726篇 |
2009年 | 647篇 |
2008年 | 680篇 |
2007年 | 718篇 |
2006年 | 536篇 |
2005年 | 390篇 |
2004年 | 267篇 |
2003年 | 202篇 |
2002年 | 99篇 |
2001年 | 71篇 |
2000年 | 70篇 |
1999年 | 84篇 |
1998年 | 88篇 |
1997年 | 92篇 |
1996年 | 71篇 |
1995年 | 29篇 |
1994年 | 33篇 |
1993年 | 16篇 |
1992年 | 6篇 |
1991年 | 7篇 |
1990年 | 2篇 |
1988年 | 1篇 |
1986年 | 1篇 |
1985年 | 8篇 |
1984年 | 13篇 |
1983年 | 18篇 |
1982年 | 11篇 |
1981年 | 2篇 |
1980年 | 4篇 |
1979年 | 4篇 |
1978年 | 3篇 |
1975年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
991.
本文在介绍LTE A蜂窝系统D2D通信技术原理的基础上,重点分析研究了其中的无线资源管理技术,包括模式选择技术、资源分配技术、功率控制技术等,并给出了基于分数频分复用的资源分配实现方案和以最大化网络速率和为目标的最优功率控制方案。 相似文献
992.
《Economic Systems》2015,39(3):369-389
The aim of this study was to find the optimal position limit for the Chinese stock index (CSI) 300 futures market. A low position limit helps to prevent price manipulations in the spot market, and thus keeps the magnitude of instantaneous price changes within the tolerance range of policymakers. However, setting a position limit that is too low may also have negative effects on market quality. We propose an artificial limit order market with heterogeneous interacting agents to examine the impact of different levels of position limits on market quality, measured as liquidity, return volatility, efficiency of information dissemination, and trading welfare. The simulation model is based on realistic trading mechanisms, investor structure, and order submission behavior observed in the CSI 300 futures market.Our results show that on the basis of the liquidity status in September 2010, raising the position limit from 100 to 300 could significantly improve market quality and at the same time keep the maximum absolute price change per 5 s below the 2% tolerance level. However, the improvement becomes only marginal if the position limit is further increased beyond 300. Therefore, we believe that raising the position limit to a moderate level can enhance the functionality of the CSI 300 futures market, which should benefit the development of the Chinese financial system. 相似文献
993.
本文利用要素市场扭曲指数及中国高技术产业1997~2009年省际面板数据,考察了要素市场扭曲对R&D投入的影响及区域差异。结果表明,要素市场扭曲对R&D资本投入和R&D人力投入有着不同的影响,抑制了R&D资本投入增长,促进了R&D人力投入;而且其对两者的影响都存在着显著的区域差异。在此基础上,运用门槛检验方法对这种区域差异的影响因素进行了探讨,研究发现,在区域经济发展水平、人力资本水平、财政收入、产权结构和对外开放程度等因素的不同门槛值区间,要素市场扭曲对高技术产业R&D投入的影响程度和方向都存在着明显的差异。 相似文献
994.
995.
Stefano Colombo 《Australian economic papers》2015,54(1):38-42
This note indicates that the derivation of the royalty contract for licensing in Wang and Yang (Australian Economic Papers, 39 (1999) 106–119) is not correct. As a consequence, the profits of the innovator in the case of royalty licensing are underestimated. 相似文献
996.
Oihana Aristondo Francisco J. Goerlich Gisbert Casilda Lasso De La Vega 《Review of Income and Wealth》2015,61(3):561-572
A poverty index should be sensitive to the number of poor people, the extent of the shortfall of the poor, and the inequality among the poor. A difficulty arises when inequality among the poor needs to be assessed. The inequality may be analyzed in terms of either incomes or gaps. Depending on what side we focus on, the inequality level comparisons may be contradictory. This paper proposes a reinterpretation of the inequality component involved in the decompositions of well‐known poverty indices. The alternative indices we introduce measure equally the income and gap inequality among the poor. The comparisons in inequality as measured by these indices are then independent of the viewpoint. An empirical application illustrates the proposal. 相似文献
997.
Martina Celidoni 《Review of Income and Wealth》2015,61(1):59-74
This paper applies the decomposition of the Foster–Greer–Thorbecke poverty index to the measurement of individual vulnerability to poverty. I highlight that poverty risk can be expressed as a function of expected incidence, expected intensity, and expected variability below the poverty line, three essential aspects for improving the design of appropriate risk‐management policies. An empirical illustration is provided using the British Household Panel Survey and the Italian Survey on Household Income and Wealth. 相似文献
998.
This paper investigates the relationship between subjective expectations regarding the replacement rate of income at retirement and several measures of pension satisfaction. We use panel data on Dutch employees, analyzed with fixed effects models, allowing for correlation between unobserved heterogeneity in satisfaction and optimism or pessimism in expectations. The level of the expected replacement rate is found to be positively related to satisfaction: respondents who revise their expectations of the level of their replacement rate upwards tend to become more satisfied with their pension provisions, in particular with the level of the expected benefits. We do not find robust evidence for a relationship between uncertainty and pension satisfaction. 相似文献
999.
Srijit Mishra 《Review of Income and Wealth》2015,61(4):799-811
In the understanding of decomposing poverty change, the growth effect of mean income is replaced with the growth effect of total income and the impact of change in total population. These two, along with changes in inequality, form the three broader effects that can be computed in multiple ways depending upon the base period and the sequence of calculation. Changing the base does not alter the broader effects while specific attributions within each effect get interchanged. For a given base, there will be six possible sequences and we take an average of these to compute the three broad effects. Finally, poverty change on account of the three broad effects comprising growth of total income, change in inequality, and change in total population are shown as part of the within‐group effect while change in population shares, which is different from change in total population, is a between‐group effect. We provide empirical illustrations with data from India. 相似文献
1000.
Marc Fleurbaey 《Review of Income and Wealth》2015,61(2):199-219
This paper proposes four criteria for the selection of a better measure of living standards: it should be comprehensive, correlation sensitive, preference based, and fairness based. These criteria are applied to the following measures: income, equivalent income, capabilities, and satisfaction. The paper then explores the relationship between the space of goods and services, the space of budgets, and the more fundamental space of the aspects of life that people really care about. The importance of the fairness principles guiding interpersonal comparisons is highlighted. 相似文献