全文获取类型
收费全文 | 8516篇 |
免费 | 237篇 |
国内免费 | 58篇 |
专业分类
财政金融 | 906篇 |
工业经济 | 549篇 |
计划管理 | 1891篇 |
经济学 | 1666篇 |
综合类 | 868篇 |
运输经济 | 68篇 |
旅游经济 | 56篇 |
贸易经济 | 1001篇 |
农业经济 | 562篇 |
经济概况 | 1214篇 |
信息产业经济 | 7篇 |
邮电经济 | 23篇 |
出版年
2024年 | 15篇 |
2023年 | 64篇 |
2022年 | 153篇 |
2021年 | 267篇 |
2020年 | 217篇 |
2019年 | 144篇 |
2018年 | 125篇 |
2017年 | 224篇 |
2016年 | 183篇 |
2015年 | 247篇 |
2014年 | 328篇 |
2013年 | 510篇 |
2012年 | 675篇 |
2011年 | 1030篇 |
2010年 | 907篇 |
2009年 | 606篇 |
2008年 | 595篇 |
2007年 | 577篇 |
2006年 | 640篇 |
2005年 | 567篇 |
2004年 | 170篇 |
2003年 | 124篇 |
2002年 | 104篇 |
2001年 | 113篇 |
2000年 | 54篇 |
1999年 | 51篇 |
1998年 | 27篇 |
1997年 | 11篇 |
1996年 | 17篇 |
1995年 | 6篇 |
1994年 | 5篇 |
1993年 | 10篇 |
1992年 | 10篇 |
1991年 | 4篇 |
1990年 | 5篇 |
1989年 | 5篇 |
1988年 | 9篇 |
1986年 | 4篇 |
1985年 | 2篇 |
1984年 | 4篇 |
1979年 | 1篇 |
1854年 | 1篇 |
排序方式: 共有8811条查询结果,搜索用时 15 毫秒
1.
Weipeng Lin Jingjing Ma Qi Zhang Jenny Chen Li Feng Jiang 《Journal of Business Ethics》2018,152(4):1099-1115
Previous research has shown that virtuous leader behavior in the form of benevolent leadership has considerable impact on employee creativity. However, little is known as to how and under what conditions these constructs are linked. In the current research, we proposed and tested a moderated mediation model positing leader–member exchange (LMX) as a mediator, and employee power-distance orientation as a moderator of this relationship. Two studies were conducted to test our hypothesized model. In Study 1, repeated measured data collected from 284 Chinese employees in an information technology company demonstrated that benevolent leadership had a lagged effect on LMX. In Study 2, analyses of multisource and lagged data from 391 Chinese employees in 42 research and development teams, and their direct supervisors indicated that benevolent leadership was positively related to supervisor-rated employee creativity via LMX. In addition, the relationship between benevolent leadership and LMX was stronger for employees high in power-distance orientation. Theoretical implications of benevolent leadership’s research and practical contributions concerning promoting creativity in organizations where benevolent leaders prevail are also discussed. 相似文献
2.
In this article, we account for the first time for long memory, regime switching and the conditional time-varying volatility of volatility (heteroscedasticity) to model and forecast market volatility using the heterogeneous autoregressive model of realized volatility (HAR-RV) and its extensions. We present several interesting and notable findings. First, existing models exhibit significant nonlinearity and clustering, which provide empirical evidence on the benefit of introducing regime switching and heteroscedasticity. Second, out-of-sample results indicate that combining regime switching and heteroscedasticity can substantially improve predictive power from a statistical viewpoint. More specifically, our proposed models generally exhibit higher forecasting accuracy. Third, these results are widely consistent across a variety of robustness tests such as different forecasting windows, forecasting models, realized measures, and stock markets. Consequently, this study sheds new light on forecasting future volatility. 相似文献
3.
A growing literature finds evidence that flood risk salience varies over time, spiking directly following a flood and then falling off individuals' cognitive radar in the following years. In this article, we provide new evidence of salience exploiting a hurricane cluster impacting Florida that was preceded and followed by periods of unusual calm. Utilizing residential property sales across the state from 2002 through 2012, our main estimate finds a salience impact of ?8%, on average. The salience effect persists when we base estimation only on spatial variation in prices to limit confounding from other simultaneous changes due to shifting hedonic equilibria over time. These effects range from housing prices decreases of 5.4–12.3% depending on the year of sale. Understanding flood risk salience has important implications for flood insurance and disaster policy, the benefits transfer literature, and, more broadly, our understanding of natural disaster resilience. JEL Classification: Q51, Q54, R21 相似文献
4.
5.
Most studies on the predictability of moving average (MA) technical analysis use the discrete (buy/sell) trading recommendations. However, it is possibly incomplete or unreliable to explore the predictability of MA by only employing its generated trading signals. To further explore the forecastability of MA, we study its measurable impact on the stock market returns by using a conventional predictive regression framework. Our empirical study on the US stock market with respect to more detailed price information finds, (i) that the proposed predictor, MADP (MA based on daily prices) shows significant predictability in‐ and out‐of‐sample, and significantly outperforms the historical average (HA) benchmark as well as the MA based on monthly prices, (ii) that the predictability of MADP centers on the short‐term lags (within the most recent 10 days) and disappears when lags are beyond 20 days, and (iii) that the economic evaluation of the portfolios based on trading strategies confirms the superior performance of MADP with short‐term lags against the benchmark even though considering transaction costs. 相似文献
6.
2002年,上海港创造了一个新纪录——集装箱吞吐量完成861万TEU,比上年634万TEU增长35.8%,超越高雄港而成为排名世界第四位的集装箱港口。这一辉煌业绩标志着作为我国大陆最大的国际通航港口又向国际航运中心建设的目标迈出了一大步。上海港集装箱吞吐量的发展是超常的。近10年来,它都以年均28%的增长率攀升。1994年突破100万达到119.9万TEU,从1997年至2001年的5年里,每一年都突破一个大数,分别超越200万、300万、400万、500万和600万TEU,2002年则跃升双百万,达到861万TEU。这是上海港集装箱运输发展史上前所未有的。它超常发展的巨大… 相似文献
7.
生命周期评价方法及其应用 总被引:6,自引:0,他引:6
介绍了生命周期评价的目的、意义和基本方法,并运用该方法对燃煤发电、废纸造纸、废旧塑料气化发电等几种不同工业过程的环境影响进行了分析。 相似文献
8.
9.
陶志翔 《黄石理工学院学报》2005,21(2):25-28
为了规范证券市场,维护投资者的合法权益,我国立法机关加强了对内幕交易犯罪行为的惩处,理论界对内幕信息、犯罪主体的界定等一些具体问题有较大争议,本文对这类问题在一定程度上进行了探讨。 相似文献
10.
Rural taxation and government regulation in China 总被引:3,自引:0,他引:3
This paper places the problem of Chinese rural taxation in the context of government regulation and seeks to present an integrated theoretical framework of Chinese rural development in the past two decades. Our theoretical framework reconciles the seemingly contradictory facts that the average level of rural taxation relative to rural net income did not increase quickly from 1990, but rural taxation became a very serious problem in this period. Our findings suggest that this is in large part due to increases in rural income disparity from 1990 and uneven tax distribution among different income groups. We argue that differentiated enforcement of government regulations such as grain procurement and birth control play an important role in the rural taxation problem, and more generally, the problem of local government expansion and rising rural income disparity. The empirical findings support our hypotheses. 相似文献