全文获取类型
收费全文 | 390篇 |
免费 | 12篇 |
国内免费 | 6篇 |
专业分类
财政金融 | 60篇 |
工业经济 | 20篇 |
计划管理 | 137篇 |
经济学 | 54篇 |
综合类 | 55篇 |
运输经济 | 6篇 |
贸易经济 | 35篇 |
农业经济 | 11篇 |
经济概况 | 30篇 |
出版年
2024年 | 1篇 |
2023年 | 7篇 |
2022年 | 4篇 |
2021年 | 9篇 |
2020年 | 11篇 |
2019年 | 16篇 |
2018年 | 7篇 |
2017年 | 4篇 |
2016年 | 2篇 |
2015年 | 13篇 |
2014年 | 28篇 |
2013年 | 22篇 |
2012年 | 23篇 |
2011年 | 34篇 |
2010年 | 27篇 |
2009年 | 23篇 |
2008年 | 26篇 |
2007年 | 20篇 |
2006年 | 22篇 |
2005年 | 23篇 |
2004年 | 19篇 |
2003年 | 9篇 |
2002年 | 8篇 |
2001年 | 8篇 |
2000年 | 8篇 |
1999年 | 5篇 |
1998年 | 10篇 |
1997年 | 4篇 |
1996年 | 5篇 |
1995年 | 1篇 |
1994年 | 2篇 |
1993年 | 1篇 |
1989年 | 2篇 |
1985年 | 3篇 |
1984年 | 1篇 |
排序方式: 共有408条查询结果,搜索用时 15 毫秒
1.
2.
酸价和过氧化值作为评判月饼产品是否氧化变质的食品安全指标,是月饼生产企业工艺与质量管控的重点和关键要素之一。本文通过对月饼生产原料的脂肪成分特性进行分析和研究,提出原料验收和仓储环节实施质量管控的方法,提高对产品酸价和过氧化值的管控能力,降低月饼质量不合格风险。 相似文献
3.
随着互联网和移动通讯技术的发展,支付领域风险范围、扩散速度、溢出效应程几何级数增长。为有效防范网络新型违法犯罪,保护人民群众财产安全和合法权益,中国人民银行相继发布了多项制度条例,全面推进个人账户分类管理。本文结合对商业银行账户分类管理专项调查结果,分析分类管理中存在的问题及原因,在此基础上,提出进一步改进个人银行账户分类管理的措施和建议。 相似文献
4.
We show that speed limit policy, a monetary policy strategy that focuses on stabilizing inflation and the change in the output gap, consistently outperforms flexible inflation targeting and flexible price level targeting in empirical medium‐scale DSGE models under discretionary policymaking. In contrast to small‐scale New Keynesian models, this welfare ranking of the targeting frameworks is not overturned when inflation dynamics are mostly backward‐looking. Importantly, the performance of the speed limit policy shows less sensitivity to its parameterization than other frameworks that target the inflation rate or the price level. 相似文献
5.
自然界中发生的滑坡绝大多数呈三维形态,边坡稳定性分析应从三维的角度进行处理。在实际边坡工程作业中,科学地计算边坡受到边界条件约束、荷载作用、土体性质在空间上变异等实际形态的影响,同样需要进行三维稳定性分析。目前边坡稳定性分析仍以二维极限平衡法为主。当滑动面已经确定时,使用三维分析可以恰当地考虑滑坡的三维形态对安全系数的影响,同时可以避免二维分析时如何选择代表性横截面,计算结果是否合理等问题。 相似文献
6.
根据MQC-75型清仓机的结构特点和在煤矿井下使用的经验,阐述了该型清仓机用于煤矿井下水仓清理的适应性、操作原理及故障排除方法。 相似文献
7.
吊桶是立井井筒开凿时期提升矸石和运送材料及升降人员的主要容器,吊桶的卸矸目前多采用挂钩式或座钩式卸料方式;但是随着矿井的开凿深度不断延伸,在过透水层时,由于探放水不及时或涌出水比较大,超出了井筒的排水量,或者是由于冷冻井在解冻后,井筒的井筒质量不过关,各别井壁也会发生透水事故;这就会出现淹井事故,有时淹井深度达二三百米。对于处理这种淹井事故,往往只有一个办法,那就是用沙或混凝土对井筒回填;这就需要吊桶在下到几百米下的水底自动把料卸掉,但现在矿井常用的挂钩式吊桶和座钩式吊桶已经不能满足这个需要了。 相似文献
8.
We study an Edgeworth‐type refinement of the central limit theorem for the discretization error of Itô integrals. Toward this end, we introduce a new approach, based on the anticipating Itô formula. This alternative technique allows us to compute explicitly the terms of the corresponding expansion formula. Two applications to finance are given; the asymptotics of discrete hedging error under the Black–Scholes model and the difference between continuously and discretely monitored variance swap payoffs under stochastic volatility models. 相似文献
9.
It has been recently shown that rough volatility models, where the volatility is driven by a fractional Brownian motion with small Hurst parameter, provide very relevant dynamics in order to reproduce the behavior of both historical and implied volatilities. However, due to the non‐Markovian nature of the fractional Brownian motion, they raise new issues when it comes to derivatives pricing. Using an original link between nearly unstable Hawkes processes and fractional volatility models, we compute the characteristic function of the log‐price in rough Heston models. In the classical Heston model, the characteristic function is expressed in terms of the solution of a Riccati equation. Here, we show that rough Heston models exhibit quite a similar structure, the Riccati equation being replaced by a fractional Riccati equation. 相似文献
10.
《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