全文获取类型
收费全文 | 10486篇 |
免费 | 227篇 |
专业分类
财政金融 | 2210篇 |
工业经济 | 776篇 |
计划管理 | 1657篇 |
经济学 | 2235篇 |
综合类 | 122篇 |
运输经济 | 81篇 |
旅游经济 | 205篇 |
贸易经济 | 1612篇 |
农业经济 | 414篇 |
经济概况 | 1395篇 |
邮电经济 | 6篇 |
出版年
2020年 | 99篇 |
2019年 | 161篇 |
2018年 | 190篇 |
2017年 | 188篇 |
2016年 | 183篇 |
2015年 | 134篇 |
2014年 | 190篇 |
2013年 | 1213篇 |
2012年 | 266篇 |
2011年 | 292篇 |
2010年 | 283篇 |
2009年 | 291篇 |
2008年 | 281篇 |
2007年 | 231篇 |
2006年 | 251篇 |
2005年 | 225篇 |
2004年 | 207篇 |
2003年 | 220篇 |
2002年 | 207篇 |
2001年 | 200篇 |
2000年 | 205篇 |
1999年 | 198篇 |
1998年 | 202篇 |
1997年 | 194篇 |
1996年 | 184篇 |
1995年 | 150篇 |
1994年 | 162篇 |
1993年 | 165篇 |
1992年 | 188篇 |
1991年 | 178篇 |
1990年 | 128篇 |
1989年 | 136篇 |
1988年 | 116篇 |
1987年 | 130篇 |
1986年 | 143篇 |
1985年 | 192篇 |
1984年 | 161篇 |
1983年 | 184篇 |
1982年 | 159篇 |
1981年 | 143篇 |
1980年 | 161篇 |
1979年 | 140篇 |
1978年 | 114篇 |
1977年 | 120篇 |
1976年 | 104篇 |
1975年 | 109篇 |
1974年 | 102篇 |
1973年 | 81篇 |
1972年 | 65篇 |
1971年 | 65篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
Aaron H. Anglin Jeremy C. Short Will Drover Regan M. Stevenson Aaron F. McKenny Thomas H. Allison 《Journal of Business Venturing》2018,33(4):470-492
We extend the entrepreneurship literature to include positive psychological capital — an individual or organization's level of psychological resources consisting of hope, optimism, resilience, and confidence — as a salient signal in crowdfunding. We draw from the costless signaling literature to argue that positive psychological capital language usage enhances crowdfunding performance. We examine 1726 crowdfunding campaigns from Kickstarter, finding that entrepreneurs conveying positive psychological capital experience superior fundraising performance. Human capital moderates this relationship while social capital does not, suggesting that costly signals may, at times, enhance the influence of costless signals. Post hoc analyses suggest findings generalize across crowdfunding types, but not to IPOs. 相似文献
2.
David McGillivray Michael B. Edwards Ian Brittain Jason Bocarro Joerg Koenigstorfer 《Leisure Studies》2019,38(2):175-190
In this conceptual article, the authors propose a framework for how progressive human rights outcomes may be obtained in the context of bidding, planning and implementing major sport events (MSEs) through the implementation of four pathways, including good governance, the democratic participation of stakeholders, the formalisation of human rights agendas and the deployment of sensitive urban development. The authors argue that there is a need for adherence to internationally recognised standards, such as the Universal Declaration of Human Rights and the United Nations Guiding Principles on Business and Human Rights if rhetorical statements from MSE awarding bodies and host organisers are to be accountable to a wider set of actors. If researchers and practitioners want to address some of the critical issues related to human rights and MSEs, it is imperative that key actors working in the rights sphere are involved in shaping the research agenda and monitoring its implementation. Academics need to take a proactive approach aimed at achieving both theoretically grounded and practically relevant solutions, with engagement occurring over an extended period of time. This approach, avowedly political and concerned with genuine action, is a key way in which MSE stakeholders can be held to account for their actions in regard to human rights. 相似文献
3.
Hanjo Odendaal Monique Reid Johann F. Kirsten 《The South African journal of economics. Suid-afrikaanse tydskrif vir ekonomie》2020,88(4):409-434
In this paper, we consider the feasibility of constructing online sentiment indices, using large amounts of media data, as an alternative to the conventional survey method used to create the consumer confidence index in South Africa. A clustering framework is adopted to provide an indication of possible candidate sentiment indices constructed from a combination of different text sources and dictionaries that best mimic the traditional survey-based consumer confidence index from the South African Bureau for Economic Research (BER). The results conclude that it is possible to create an index using sentiment analysis using online editorial data that does resemble the BER’s consumer confidence index. The different media-based sentiment indices (MSI) show a significant level of correlation and co-movement with the BER’s CCI. Impulse responses and cross-correlation functions indicate that the MSI could potentially lead the survey-based method up to two quarters. Furthermore, Granger-causality tests show that the media-based indices are good predictors of future consumer confidence index values. The results provide motivation for further study on the use of sentiment-based techniques and online media data sources to track consumer confidence within an emerging market such as South Africa. 相似文献
4.
Ian Keay 《The Canadian journal of economics》2019,52(4):1464-1496
As industries mature, experience is accumulated, productivity increases, trade performance improves on domestic and international markets and learning potential dissipates. Using theory‐consistent empirical specifications, I find a strong, robust negative relationship linking tariff rates to trade performance for manufactured products that matured during the first decade after Canada prioritized protectionist policy objectives in 1879. This relationship also holds at a more aggregate industry level, where I can use other measures of maturity, control for import penetration, use historically contemporaneous trade elasticity estimates, link trade performance to trade restrictiveness and effective rates of protection and where I can instrument for import penetration and trade performance using a two‐stage IV–GMM estimation approach. The results suggest that after 1890 the Canadian government carefully cut tariffs on products produced by maturing Canadian producers and this retreat from protectionism significantly lowered the static deadweight losses resulting from Canadian trade policy during the post‐1890 period. 相似文献
5.
Emi Watanabe-Fujinuma Benjamin F. Banderas Yukihiro Koretsune Koichiro Kumagai Shinichiro Uchiyama Takeshi Yamashita 《Journal of medical economics》2019,22(8):798-805
Aims: The Anti-Clot Treatment Scale (ACTS) and Treatment Satisfaction Questionnaire for Medication version II (TSQM-II) are validated treatment satisfaction patient-reported outcome (PRO) instruments. The ACTS includes two domains: Burdens and Benefits; the TSQM-II includes four: Effectiveness, Side Effects, Convenience, and Global Satisfaction. Japanese-language versions of the ACTS and TSQM-II have been developed and linguistically validated. This study aimed to assess their psychometric properties in Japanese patients with atrial fibrillation (AF).Materials and methods: ACTS and TSQM-II data from 534 patients with AF were collected in a Japanese post-marketing surveillance study of a direct oral-anticoagulant, rivaroxaban. Four key psychometric properties, in line with best practice guidelines from the US Food and Drug Administration, were examined using traditional psychometric methods: acceptability, scaling assumptions, reliability (i.e. internal consistency reliability, test-retest reliability), and construct validity (i.e. convergent validity and known groups).Results: ACTS Burdens and Benefits and TSQM-II Effectiveness, Convenience, and Global Satisfaction scales were found to be acceptable (e.g. item-level missing data at baseline <4%), with all scales having good internal consistency (Cronbach’s alpha > 0.80). test-retest reproducibility intraclass correlation coefficients for the ACTS Burdens and Benefits were 0.59 and 0.65, respectively, and between 0.54–0.61 for the TSQM-II scales. Known-groups validity for the ACTS and TSQM-II was supported by differences in scale scores by positive and negative impact (p?<?0.05). Correlations between the ACTS and TSQM-II (convergent validity) were lower than expected (range r?=?0.09–0.48), but in line with the original ACTS development study.Limitations: Evaluation of test-retest reproducibility was limited by assessment period, which was longer (3 months) than recommended guidelines (usually up to 2 weeks).Conclusions: Overall, Japanese versions of ACTS and TSQM-II scales satisfied internal consistency reliability and traditional validity criteria. Our study supports the ACTS and TSQM-II as appropriate PRO instruments to measure satisfaction with anticoagulant treatment in Japanese patients with AF.Trial registration: NCT01598051, clinicaltrials.gov; registered April 20, 2012. 相似文献
6.
7.
The decline in private health insurance coverage over the period 1989–95 is analysed using the ABS National Health Surveys. Individuals' health status and health risk behaviours are found to be significant determinants of their decision to purchase private health insurance. At a point in time, the pool of the insured is very heterogeneous, with a mix of both good and bad health risks. It is found that the decline in insurance coverage over the period 1989–95 coincided with an increase in the degree of 'adverse selection' within the insured population. 相似文献
8.
9.
Ian Coxhead 《Asian-Pacific economic literature》2003,17(1):22-54
Economic growth and environmental damage are associated, but the relationship is neither linear nor even monotonic. This is clearly seen in the diverse experiences of tropical Asian economies over recent decades. The nature of the growth–environment link depends on the changing composition of production and on growth-related changes in techniques and environmental policies; the enforcement of property rights over natural resources and over air and water quality is another important element. Moreover, environmental and economic policies interact: in effect, every economic policy that affects resource allocation is a de facto environmental measure. One important implication is that the environmental consequences of major policy shifts, such as the 'globalisation' of many tropical Asian economies since about 1980, have been profound. The analytical literature on growth and the environment in Asia tends to agree that environmental damage is costly to regional economies, and has begun to identify and quantify some of the many causal linkages now recognised between economic development and the valuation and use of environmental and natural resource assets. 相似文献
10.
Eric F. Parkinson 《International Journal of Technology and Design Education》2004,14(3):219-243
Construction kits have played a significant part in nurturing the growth and development of the minds and manipulation-based
skills of children (and adults) in formal and non-formal education settings. These kits have origins rooted in the representation
of the built world and now have a diversity of form and function, including technical versions with moving parts. This article
examines some of the historically based ideas that lie behind the role that kits may have in terms of physical modelling.
The article traces the transformation of kits from simple bricks and blocks into more complicated pieces for space-filling
and achieving the transfer of forces and motion. This transformation occurred during the Victorian era when the influence
of the ideas of educationalists and, perhaps rather strangely, exponents of early aviation, played major roles in determining
the diversity of forms of construction kit and modelled possibilities that are now to be seen in classrooms and homes. The
article ends with a review of some of the lessons from the past and present that will need to be considered in relation to
concrete modelling in schools for the future.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献