全文获取类型
收费全文 | 8875篇 |
免费 | 233篇 |
国内免费 | 15篇 |
专业分类
财政金融 | 1207篇 |
工业经济 | 581篇 |
计划管理 | 1825篇 |
经济学 | 1800篇 |
综合类 | 766篇 |
运输经济 | 60篇 |
旅游经济 | 49篇 |
贸易经济 | 998篇 |
农业经济 | 552篇 |
经济概况 | 1266篇 |
信息产业经济 | 3篇 |
邮电经济 | 16篇 |
出版年
2024年 | 19篇 |
2023年 | 79篇 |
2022年 | 171篇 |
2021年 | 251篇 |
2020年 | 219篇 |
2019年 | 150篇 |
2018年 | 129篇 |
2017年 | 237篇 |
2016年 | 155篇 |
2015年 | 220篇 |
2014年 | 275篇 |
2013年 | 431篇 |
2012年 | 705篇 |
2011年 | 1050篇 |
2010年 | 950篇 |
2009年 | 619篇 |
2008年 | 642篇 |
2007年 | 631篇 |
2006年 | 692篇 |
2005年 | 603篇 |
2004年 | 189篇 |
2003年 | 147篇 |
2002年 | 164篇 |
2001年 | 152篇 |
2000年 | 71篇 |
1999年 | 52篇 |
1998年 | 28篇 |
1997年 | 23篇 |
1996年 | 10篇 |
1995年 | 8篇 |
1994年 | 7篇 |
1993年 | 11篇 |
1992年 | 8篇 |
1991年 | 8篇 |
1990年 | 3篇 |
1989年 | 5篇 |
1988年 | 1篇 |
1987年 | 4篇 |
1984年 | 4篇 |
排序方式: 共有9123条查询结果,搜索用时 156 毫秒
211.
Xu Li 《Review of Quantitative Finance and Accounting》2011,37(1):87-104
The main purpose of this paper is to provide additional evidence about the effect of discretionary current accruals on the
pricing of IPOs. This paper seeks to discriminate between two alternative explanations for the prior findings: (1) behavioral
biases coupled with limited arbitrage; and (2) the sample- and period-specific nature of the results in the prior literature.
The IPOs from 1962 to 1998 were used to obtain the following results. First, there was not a negative association observed
between discretionary current accruals and subsequent price performance for the 1926–1971 period. Second, analysis reveals
that the pattern of cross-sectional evidence is inconsistent with the predictions made by behavioral theories. Third, in the
1972–1998 period, evidence of predictable negative performance attributable to IPO discretionary current accruals is limited
to NASDAQ firms. These findings are difficult to reconcile with the explanation of behavioral biases coupled with limited
arbitrage. 相似文献
212.
Kun Chen Xin Li Baoxun Xu Jiaqi Yan Huaiqing Wang 《Enterprise Information Systems》2017,11(5):652-671
Market surveillance systems have increasingly gained in usage for monitoring trading activities in stock markets to maintain market integrity. Existing systems primarily focus on the numerical analysis of market activity data and generally ignore textual information. To fulfil the requirements of information-based surveillance, a multi-agent-based architecture that uses agent intercommunication and incremental learning mechanisms is proposed to provide a flexible and adaptive inspection process. A prototype system is implemented using the techniques of text mining and rule-based reasoning, among others. Based on experiments in the scalping surveillance scenario, the system can identify target information evidence up to 87.50% of the time and automatically identify 70.59% of cases depending on the constraints on the available information sources. The results of this study indicate that the proposed information surveillance system is effective. This study thus contributes to the market surveillance literature and has significant practical implications. 相似文献
213.
徐彤升 《铜陵财经专科学校学报》2014,(1):14-16
铜、锌期货是大宗金属期货的重要品种,在期货投资市场上广受追捧。研究通过构建VAR模型,运用格兰杰因果检验,分析了近远月铜、锌期货价格之间相互引导关系,模型实证结论认为远月期铜、锌期货价格之间具有显著的相互引导关系,为期货市场上各类型投资者提供政策指引。 相似文献
214.
215.
This article presents discussions on the optimal and robust designs for trigonometric regression models under different optimality criteria. First, we investigate the classical Q-optimal designs for estimating the response function in a full trigonometric regression model with a given order. The equivalencies of Q-, A-, and G-optimal designs for trigonometric regression in general are also articulated. Second, we study minimax designs and their implementation in the case of trigonometric approximation under Q-, A-, and D-optimality. Then, We indicate the existence of the symmetric designs that are D-optimal minimax designs for general trigonometric regression models, and prove the existence of the symmetric designs that are Q- or A-optimal minimax designs for two particular trigonometric regression models under certain conditions. 相似文献
216.
美国有着完备的反残疾人就业歧视的法律体系,包括宪法、基本法律及专门法律三个层次。通过颁布《康复法》及《美国残疾人法》,确立了反残疾人就业歧视的基本法律制度,并设有独立的平等就业机会委员会作为反残疾人就业歧视的联邦执法机构,通过接受投诉、展开调查、进行调解、提起诉讼及执行等程序来保障其权力的行使,有效地维护了残疾人就业的基本权利。美国的反残疾人就业歧视基本法律制度及其执法程序保障对我国完善反残疾人就业歧视制度有重要的借鉴意义。 相似文献
217.
Previous studies demonstrate the detrimental effect of ethical conflict (i.e., incompatibility between ethical values of employees and organizations) on employee organizational commitment. However, few studies have assessed the underlying mechanisms and boundary conditions that may contribute to a deeper understanding of how and when the detrimental effect manifests. Drawing on the transactional model of stress and literature on the moral self, our study examines the psychological strain as a key intermediate mechanism that channels the negative relationship between the ethical conflict and organizational commitment. Furthermore, we posit that employees with different levels of moral identity and moral efficacy may suffer differently from ethical conflict. We tested our research model with two-wave lagged data obtained from 265 healthcare employees and found that the indirect, negative effect of ethical conflict on organizational commitment via psychological strain is strongest among employees with high moral identity and low moral efficacy. Interestingly, results show that employees with low moral identity and high moral efficacy do not suffer from ethical conflict. These findings suggest that ethical conflict is differentially harmful to employees and that a more nuanced understanding of its contingent effects is needed. 相似文献
218.
Traditional internationalization models suggest multinational companies (MNCs) can exploit their accumulative experience to facilitate their sequential entries. However, experience may depreciate over time. Thus, obtaining benefits from prior experience for MNCs is based on two critical premises, i.e., interpreting and applying experience correctly. We argue that there is a need to study the newness dimension of experiential learning. In doing so, we aim to explore to what extent the newness of experience matters in overseas sequential entries for MNCs. Moreover, we expect that the benefits from recent experience in guiding sequential entries are contingent on the extent of context similarity between the most recent entry location and sequential entry location and the outcome expectancy of focal entry. With a sample of 112 Chinese listed firms and 410 observations during the period of 2000–2012, we find that else being equal, the newness of experience of MNCs is positively associated with sequential entry and such a relationship is positively moderated both by context similarity in institutional environment and the outcome expectancy of the focal entry. We also compare the effects of the newness of different types of experience and find that the newness of the most recent experience has a larger influence on sequential entry than location-specific experience and general experience. 相似文献
219.
党的教育方针把德育放在学生全面发展的领先地位,"德育为先"在理论与实践中被证明是正确的。针对传统德育工作存在的淡化僵化等不足,必须重点推行"三个转变",构建"全体性、全程化、全方位"德育为先体系,在坚持高职专业质量"德育为先"原则的同时,更应重视德育思路与方式的创新。 相似文献
220.
区域中心城市创新生态圈以生物学为隐喻,注重发挥创新主体的能动作用,能够放大区域中心城市发展优势。在回顾创新生态圈理论渊源的基础上,界定区域中心城市创新生态圈内涵,明确创新生态圈要素构成;以企业聚集发展为逻辑起点,探讨区域中心城市创新生态圈生态特征;基于生态学、创新理论等跨学科知识,构建区域中心城市创新生态圈演进模型,探究其运行机制。研究认为,区域中心城市创新生态圈具有开放式协同、动态自调节、多样性共生、自组织演化等生态特征,其运行机制由协同共生机制、风险识别与防控机制、利益分配机制和环境匹配机制共同组成。 相似文献