全文获取类型
收费全文 | 879篇 |
免费 | 42篇 |
专业分类
财政金融 | 156篇 |
工业经济 | 95篇 |
计划管理 | 182篇 |
经济学 | 164篇 |
综合类 | 12篇 |
运输经济 | 17篇 |
旅游经济 | 16篇 |
贸易经济 | 149篇 |
农业经济 | 46篇 |
经济概况 | 83篇 |
邮电经济 | 1篇 |
出版年
2023年 | 9篇 |
2022年 | 6篇 |
2021年 | 6篇 |
2020年 | 17篇 |
2019年 | 32篇 |
2018年 | 35篇 |
2017年 | 31篇 |
2016年 | 30篇 |
2015年 | 21篇 |
2014年 | 30篇 |
2013年 | 131篇 |
2012年 | 30篇 |
2011年 | 26篇 |
2010年 | 28篇 |
2009年 | 36篇 |
2008年 | 44篇 |
2007年 | 26篇 |
2006年 | 23篇 |
2005年 | 21篇 |
2004年 | 22篇 |
2003年 | 29篇 |
2002年 | 27篇 |
2001年 | 13篇 |
2000年 | 23篇 |
1999年 | 13篇 |
1998年 | 22篇 |
1997年 | 8篇 |
1996年 | 8篇 |
1995年 | 6篇 |
1994年 | 17篇 |
1993年 | 13篇 |
1992年 | 8篇 |
1991年 | 12篇 |
1990年 | 5篇 |
1989年 | 6篇 |
1988年 | 4篇 |
1987年 | 5篇 |
1986年 | 5篇 |
1985年 | 7篇 |
1984年 | 17篇 |
1983年 | 4篇 |
1982年 | 4篇 |
1981年 | 6篇 |
1979年 | 7篇 |
1978年 | 6篇 |
1977年 | 5篇 |
1976年 | 4篇 |
1974年 | 4篇 |
1973年 | 3篇 |
1971年 | 5篇 |
排序方式: 共有921条查询结果,搜索用时 0 毫秒
81.
ABSTRACT: During the past several years, healthcare delivery in the United States has shifted from a primarily fee-for-service system toward managed care. Mental health care has been affected disproportionately by this trend. The existing literature on managed mental health care is abundant, but narrowly focused. The purpose of this study is to take a broader public-policy approach, considering simultaneously the effects on system stakeholders: patients, providers, employers, insurers, and society. 相似文献
82.
This paper is an attempt to apply the Driving forces–Pressures–State–Impact–Responses (DPSIR) framework to identify the issues of pollinator loss. The linkages between the significant pressures on insect pollinators, their underlying socio-economic driving forces and responses, with the focus on Europe, are addressed in the study. A review of literature revealed the shortage of empirical studies that prove direct links between policy responses and specific pressures on the pollinators. Based on written evidence and expert judgement, land use practices and the use of agrochemicals were regarded as the most significant pressures on different functional groups of pollinators. As demonstrated in the study, agricultural and rural development policy has been the key driving force of these pressures. The application of the DPSIR framework proved to be useful in identifying the pathway of human pressures on pollinators. The study also concludes that there is further need for specific empirical research on the effects and effectiveness of the Common Agricultural Policy (CAP) measures (agri-environment measures in particular) to support farming practices that facilitate the protection of the environment and the prevention of pollinator loss. 相似文献
83.
84.
Helen L Kelsall Caroline F. Finch 《International journal of injury control and safety promotion》2013,20(2):61-78
Aim The aim of this review was to determine the extent to which the effectiveness of countermeasures for preventing alpine skiing injuries has been evaluated. Methods The methodology involved a critical review based on the available international literature and sports equipment standards, as well as consultation with experts in the field. Where possible, the review focused on controlled trials. Results Key injury countermeasures in skiing identified in this review include physical conditioning programmes, ski-bindings and their timely release, professional adjustment of ski-bindings and the use of mechanical testing devices for this, design of ski pole handles, helmets for children (and adults), ski patrollers, skier education, speed control on the slopes and safe lifting equipment. A tabular categorisation of the types of evidence for the effectiveness of injury countermeasures is presented. This demonstrates that the weight of evidence is generally based on a combination of data-based or biomechanical testing evidence and informed opinion/anecdotal evidence. There is minimal evidence based on controlled trials in the field. The most evaluated countermeasures are ski bindings and ski pole handles. Properly adjusted ski bindings have the potential for a 3.5-fold reduction in lower extremity injuries, particularly knee injuries. Ski pole handle design needs further innovation and attention. An immediate concern is the generally poorer standard of children’s equipment, ski bindings and their adjustment. Conclusion Skiing is a sport that is growing in popularity, but with a need for controlled trials of its injury prevention countermeasures. This review provides a basis for further action in injury prevention research, development and implementation. 相似文献
85.
Evans Stephen Osabuohien Uchenna Rapuluchukwu Efobi 《The South African journal of economics. Suid-afrikaanse tydskrif vir ekonomie》2013,81(2):292-306
Workers' remittance and compensation of employees received in Sub‐Sahara Africa (SSA) increased from USD 1.398 billion in 1980 to USD 4.834 billion in 2000 and soared to USD 21.101 billion in 2010. The impact of remittance on recipient economy requires further empirical investigation as there has not been consensus on whether remittance induces “financial prodigality” or investment in Africa. Differing from extant studies, this study employed rule of law, regulatory quality and government effectiveness as indicators of institutional quality. This is with a view to exploring how institutional quality and financial depth interact with remittance to influence investment in 44 African countries (1995‐2010). The major finding from the study, inter alia, is that institutional quality and financial depth play complimentary role in influencing remittance for investment in Africa. This study concludes that the impact of Africa's money in Africa will be enhanced in the presence of reliable institutional quality and viable financial sector. Thus, the side effect of “financial prodigality” that might be associated with remittance can be ameliorated. 相似文献
86.
The Use of Electronic Commerce by SMEs in Victoria, Australia 总被引:1,自引:0,他引:1
87.
88.
89.
Stephen Beare Helen Meshios 《The Australian journal of agricultural and resource economics》1990,34(1):56-66
The extent to which wools with different fibre characteristics can be substituted in textile production and consumption holds implications for Australia's international and domestic marketing policies. An analysis of price-induced substitution between Australian wools of different fibre diameters was conducted. Fibre diameter was used to parameterise cross-price relationships in order to estimate a system of demand equations for wools by diameter class. The results indicate that direct substitution takes place within a very limited range of fibre diameters. The use of product characteristics to parameterise price relationships may be extended to other graded commodities. 相似文献
90.