全文获取类型
收费全文 | 12226篇 |
免费 | 4273篇 |
国内免费 | 7篇 |
专业分类
财政金融 | 1277篇 |
工业经济 | 1815篇 |
计划管理 | 1480篇 |
经济学 | 3493篇 |
综合类 | 360篇 |
运输经济 | 77篇 |
旅游经济 | 75篇 |
贸易经济 | 3722篇 |
农业经济 | 2670篇 |
经济概况 | 1522篇 |
邮电经济 | 15篇 |
出版年
2024年 | 156篇 |
2023年 | 425篇 |
2022年 | 274篇 |
2021年 | 210篇 |
2020年 | 534篇 |
2019年 | 1037篇 |
2018年 | 829篇 |
2017年 | 873篇 |
2016年 | 758篇 |
2015年 | 674篇 |
2014年 | 789篇 |
2013年 | 1098篇 |
2012年 | 1093篇 |
2011年 | 1055篇 |
2010年 | 957篇 |
2009年 | 791篇 |
2008年 | 629篇 |
2007年 | 575篇 |
2006年 | 530篇 |
2005年 | 502篇 |
2004年 | 572篇 |
2003年 | 353篇 |
2002年 | 237篇 |
2001年 | 199篇 |
2000年 | 122篇 |
1999年 | 165篇 |
1998年 | 100篇 |
1997年 | 100篇 |
1996年 | 73篇 |
1995年 | 44篇 |
1994年 | 58篇 |
1993年 | 80篇 |
1992年 | 90篇 |
1991年 | 107篇 |
1990年 | 46篇 |
1989年 | 54篇 |
1988年 | 47篇 |
1987年 | 33篇 |
1985年 | 33篇 |
1984年 | 17篇 |
1983年 | 18篇 |
1982年 | 25篇 |
1979年 | 11篇 |
1978年 | 8篇 |
1976年 | 9篇 |
1975年 | 8篇 |
1973年 | 11篇 |
1972年 | 8篇 |
1969年 | 10篇 |
1963年 | 9篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
The cross‐cultural study of LMX and individual employee voice: The moderating role of conflict avoidance
下载免费PDF全文
![点击此处可从《Human Resource Management Journal》网站下载免费的PDF全文](/ch/ext_images/free.gif)
This article examines the role of national culture, measured by conflict avoidance, on the relationship between leader–member exchange (LMX) and individual employee voice. Using data collected from automotive industry employees in the United States and Korea, the findings show that conflict avoidance is negatively related to employee voice and also moderates the relationship between LMX and employee voice in the Korean sample. In particular, the relationship between LMX and voice becomes less positive when conflict avoidance is high. On the other hand, conflict avoidance does not have a direct effect on employee voice as well as an interactive effect with LMX on employee voice in the U.S. sample. This study, therefore, highlights the importance of the national culture in the comparative study of employee voice. 相似文献
2.
3.
This study aimed to understand the factors affecting repurchase behavior of chocolate brands and, consequently, customer retention and acquisition. The study adopted a qualitative, inductive approach using in-depth interviews with 31 Australian consumers. The factors identified in the extant literature as antecedents of customers’ repurchase intention in the chocolate industry, including brand recognition, sales promotion, product price value, variety, taste, texture, size, packaging, and customer satisfaction, were confirmed. The results also indicated that functional value, product selection value, self-gratification value, socialization value, and transactional value were also considered during the consumer decision-making process. Implications for practitioners are provided. 相似文献
4.
Firms use active political strategies not only to mitigate uncertainty emanating from legislative activity, but also to enhance their growth opportunities. We find that a firm's systematic risk (beta) can be hedged away by employing various political strategies involving the presence of former politicians on corporate boards of directors, contributions to political campaigns, and corporate lobbying activities. The hedging effect is greater when firms operate in more uncertain industries. In addition, active political strategies are associated with greater firm heterogeneity and make real options more value relevant as potential drivers of competitive advantages in uncertain environments. 相似文献
5.
Luby变换(Luby Transform,LT)码作为信道编码应用于电力线通信(Power Line Communication,PLC),可实现电信号的可靠传输。度分布对LT码编译码性能的影响至关重要。为了得到更优的度分布,首先调整二进制指数分布(Binary Exponential Distribution,BED)中的度数比例,获得一种译码性能更优的改进的二进制指数分布(Improved BED,IBED)。然后,根据IBED在冗余度较小时译码成功率高,而冗余度增大后鲁棒孤子分布(Robust Soliton Distribution,RSD)的译码性能表现更佳的特点,通过求和归一化的方式将IBED与RSD两种度分布的优势进行有机结合,提出一种新型二进制鲁棒孤子分布(Binary RSD,BRSD)。仿真结果表明,与其他方法及传统的RSD相比,采用新度分布进行LT编码,可明显降低译码开销,并节约编译码耗时。将新型度分布应用于基于LT码的PLC系统中,能有效地抑制PLC信道中各种噪声对电信号的干扰,并提高通信效率。 相似文献
6.
当前小体积远端射频单元(Remote Radio Unit,RRU)主要是皮站级别的Pico-RRU,其重量和体积仍然难以满足掌上型的要求。为此,采用高集成度的AD9361芯片来实现长期演进(Long Term Evolution,LTE)宽带收发信机功能,配合时钟同步模块、放大器模块和控制接口电路等一起构建低成本的掌上型RRU。主要解决了基于AD9516的时钟同步、低相位噪声设计和高灵敏度接收机设计三个技术难点,成功实现了掌上型、高性能、低成本的设计目标。整个RRU样机尺寸为18 cm×10 cm×2 cm,质量约500 g,量产成本千元以内。测试表明,该RRU下行误差向量幅度(Error Vector Magnitude,EVM)小于3%,优于3GPP要求的8%;10 MHz带宽时上行接收机灵敏度优于3GPP要求的-93.5 dBm。 相似文献
7.
8.
9.
This paper analyzes the issue costs and initial pricing of bonds in the international market. In particular, we investigate the determinants of three components of issue costs: underwriter fee, underwriter spread (the difference between the offering price and the guaranteed price to the issuer), and underpricing (the difference between the market price and the offering price). Total underwriter compensation increases with the bonds' credit risk and maturity, but it is insignificantly related to issue size. Interestingly, underwriters appear to price some issue characteristics directly (by adjusting the fee) and other characteristics indirectly (by setting the guaranteed price). The two compensation components (fee and spread) are negatively related to each other. We provide evidence that this trade-off is consistent with income tax considerations, as well as with two-tier pricing by underwriters. We find no evidence of underpricing. 相似文献
10.
In rational, efficiently functioning and complete markets, returns on derivative and underlying securities should be perfectly contemporaneously correlated. Due to market imperfections, one of these markets may reflect information faster. The use of high-frequency data and the choice for a small unit time interval to measure these lead-lag relations comes at the cost of some or many missing observations, causing traditional estimators to either under- or overestimate covariances and correlations. We use a new estimator to estimate lead-lag relationships between the cash AEX index, options and futures. We find that futures returns lead both options and cash index returns by approximately 10 minutes. The relationship between options and the cash market is not completely unidirectional. 相似文献