全文获取类型
收费全文 | 32550篇 |
免费 | 728篇 |
国内免费 | 88篇 |
专业分类
财政金融 | 4013篇 |
工业经济 | 2099篇 |
计划管理 | 6728篇 |
经济学 | 5991篇 |
综合类 | 3209篇 |
运输经济 | 227篇 |
旅游经济 | 196篇 |
贸易经济 | 3632篇 |
农业经济 | 1983篇 |
经济概况 | 5227篇 |
信息产业经济 | 4篇 |
邮电经济 | 57篇 |
出版年
2024年 | 60篇 |
2023年 | 247篇 |
2022年 | 560篇 |
2021年 | 835篇 |
2020年 | 782篇 |
2019年 | 475篇 |
2018年 | 444篇 |
2017年 | 797篇 |
2016年 | 621篇 |
2015年 | 788篇 |
2014年 | 1128篇 |
2013年 | 1652篇 |
2012年 | 2599篇 |
2011年 | 3946篇 |
2010年 | 3586篇 |
2009年 | 2290篇 |
2008年 | 2486篇 |
2007年 | 2260篇 |
2006年 | 2472篇 |
2005年 | 2235篇 |
2004年 | 639篇 |
2003年 | 594篇 |
2002年 | 512篇 |
2001年 | 515篇 |
2000年 | 248篇 |
1999年 | 184篇 |
1998年 | 104篇 |
1997年 | 58篇 |
1996年 | 46篇 |
1995年 | 24篇 |
1994年 | 35篇 |
1993年 | 25篇 |
1992年 | 23篇 |
1991年 | 18篇 |
1990年 | 24篇 |
1989年 | 11篇 |
1988年 | 10篇 |
1987年 | 7篇 |
1986年 | 1篇 |
1984年 | 15篇 |
1983年 | 4篇 |
1982年 | 1篇 |
1977年 | 2篇 |
1975年 | 1篇 |
1967年 | 1篇 |
1964年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
2.
Aims: Depression is the most frequent comorbidity reported among patients with rheumatoid arthritis (RA). Comorbid depression negatively impacts RA patients’ health-related quality-of-life, physical function, mental function, mortality, and experience of pain and symptom severity. The objective of this study was to assess healthcare utilization, expenditures, and work productivity among patients with RA with or without depression.Materials and methods: Data from adult patients who had at least two visits each related to RA and depression over a 1-year period were extracted from the Truven Health MarketScan research databases. Outcomes comprised healthcare resource utilization, work productivity loss, and direct healthcare costs comparing patients with RA with depression (n?=?3,478) vs patients with RA without depression (n?=?43,222).Results: Patients with RA and depression had a significantly greater relative risk of hospitalization and number of all-cause and RA-related hospitalizations, utilization of emergency services, days spent in the hospital, physician visits, and RA-related surgeries compared with RA patients without depression. Patients with RA and depression had a higher risk of and experienced more events and days of short-term disability compared with patients without depression. The incremental adjusted annual all-cause and RA-related direct costs were $8,488 (95% CI = $6,793–$10,223) and $578 (95% CI = –$98–$1,243), respectively, when comparing patients with RA and depression vs RA only.Limitations: The current analysis is subject to the known limitations of retrospective studies based on administrative claims data.Conclusions: This study suggested increased healthcare utilization, work productivity loss, and economic burden among RA patients due to comorbid depression. These findings emphasize the importance of managing depression and including depression as a factor when devising treatment algorithms for patients with RA. 相似文献
3.
4.
5.
企业创新是国家经济可持续增长的关键,受到管理层意愿的影响,因而需要对内部经营者的权力进行制衡。以2010-2018年我国A股上市公司为研究样本,实证检验管理层权力制衡强度对企业创新投资的影响,以及不同债务约束情境下高商业信用配置、高负债水平的调节效应,此外,还考察了产权性质的差异化影响。研究表明,管理层权力制衡强度越大,企业创新投资水平越高;高商业信用强化了该促进作用,而高负债水平弱化了该促进作用。进一步研究发现,管理层权力制衡强度与企业创新投资的关系在民企中更显著;国企能够更好地获得和运用商业信用,使其高商业信用对该关系的强化效应更显著;民企具有更强的债务约束,其高负债水平对该关系的弱化效应更明显。 相似文献
6.
We study the effect of the educational diversity of managers on the performance of team‐managed mutual funds using a large sample of U.S. equity funds from 1994 to 2013. We consider diversity in terms of both final educational degree and field of educational specialisation. We find that, in general, both types of diversity have a positive impact on fund performance, and our results are robust over a wide range of performance metrics and changes in market conditions. 相似文献
7.
Pik-Yin Foo Voon-Hsien Lee Keng-Boon Ooi Garry Wei-Han Tan Amrik Sohal 《Business Strategy and the Environment》2021,30(8):4136-4153
This study aims to empirically evaluate the predictors that influence sustainability performance among manufacturing firms. Leadership and management, green and lean practices, and guanxi were examined to determine whether these predictors are directly and/or indirectly affecting sustainability performance; 160 valid responses were collected and partial-least-squares-structural-equation-modeling (PLS-SEM) was used to analyze the data. The results showed that leadership and management positively influenced green and lean practices and green and lean practices positively influenced sustainability performance. Leadership and management also positively influenced guanxi. Interestingly, leadership and management and guanxi do not exert a significant direct influence on sustainability performance. The findings contributed to the development of the resource-based-view theory further by empirically exploring the significance of leadership and management coupled with green and lean practices as competencies and capability to drive sustainability performance. The testing of the dual mediators' effects further added value to this study. 相似文献
8.
Daniel Bens Sterling Huang Liang Tan Wan Wongsunwai 《Contemporary Accounting Research》2020,37(4):2472-2500
We exploit an influential 1991 Delaware court ruling to examine simultaneously two types of conservatism that play important roles in resolving creditor–owner agency conflicts: contracting conservatism and reporting conservatism. The ruling expanded managerial fiduciary duties in favor of creditors for Delaware-incorporated firms in the vicinity of insolvency. In those firms, following the ruling, debt contracts are less likely to include conservative adjustments to accounting numbers used for covenant compliance (i.e., contracting conservatism decreases), while public financial reporting becomes more conservative (i.e., reporting conservatism increases). The decrease in contracting conservatism is concentrated in firms that exhibit a greater increase in reporting conservatism, suggesting that reporting conservatism is more cost-effective in resolving agency conflicts. In addition, the substitution effect is more pronounced in firms facing greater business uncertainty and firms with greater board independence. 相似文献
9.
Motivated by the European sovereign debt crisis, we propose a hybrid sovereign default model that combines an accessible part taking into account the evolution of the sovereign solvency and the impact of critical political events, and a totally inaccessible part for the idiosyncratic credit risk. We obtain closed‐form formulas for the probability that the default occurs at critical political dates in a Markovian setting. Moreover, we introduce a generalized density framework for the hybrid default time and deduce the compensator process of default. Finally, we apply the hybrid model and the generalized density to the valuation of sovereign bonds and explain the significant jumps in long‐term government bond yields during the sovereign crisis. 相似文献
10.
ABSTRACTThis research introduces online travel photos published on social media platforms as a complementary data resource to examine the behavior and experience of museum visitors. The practical value of online travel photos is demonstrated through a case study of popular Hong Kong museums, particularly by using the photo content and metadata available from the Flickr platform. The proposed approach is a generic method for understanding museum visitor behavior and preferences, and supports museum practitioners in developing improved products for visitors. The case study findings are particularly beneficial for tourism managers, especially those in Hong Kong, in promoting and attracting tourists to visit local museums. 相似文献