首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   977篇
  免费   32篇
财政金融   179篇
工业经济   67篇
计划管理   140篇
经济学   242篇
综合类   27篇
运输经济   11篇
旅游经济   22篇
贸易经济   142篇
农业经济   69篇
经济概况   110篇
  2024年   11篇
  2023年   13篇
  2022年   23篇
  2021年   24篇
  2020年   35篇
  2019年   29篇
  2018年   24篇
  2017年   34篇
  2016年   24篇
  2015年   19篇
  2014年   30篇
  2013年   75篇
  2012年   40篇
  2011年   59篇
  2010年   68篇
  2009年   40篇
  2008年   36篇
  2007年   41篇
  2006年   42篇
  2005年   24篇
  2004年   18篇
  2003年   17篇
  2002年   15篇
  2001年   21篇
  2000年   16篇
  1999年   13篇
  1998年   19篇
  1997年   9篇
  1996年   21篇
  1995年   12篇
  1994年   8篇
  1993年   11篇
  1992年   7篇
  1991年   7篇
  1988年   6篇
  1987年   6篇
  1986年   7篇
  1985年   10篇
  1984年   10篇
  1983年   9篇
  1982年   9篇
  1981年   8篇
  1980年   7篇
  1979年   10篇
  1978年   6篇
  1977年   6篇
  1976年   3篇
  1975年   4篇
  1973年   4篇
  1972年   6篇
排序方式: 共有1009条查询结果,搜索用时 15 毫秒
31.
    
  相似文献   
32.
目的观察针刺面瘫健侧配合董氏奇穴治疗周围性面瘫的疗效。方法选取129例面瘫患者分为两组,治疗组86例面瘫患者应用针刺面瘫健侧配合董氏奇穴治疗,并与对照组43例应用针刺与神灯照射治疗,比较疗效。结果治疗组与对照组的治愈率、总有效率为分别为89.53%、100.00%与72.09%、83.72%,治疗组疗效优于对照组(P<0.05)。结论针刺面瘫健侧配合董氏奇穴治疗周围性面瘫疗效满意。  相似文献   
33.
    
Objective: To evaluate cost-effectiveness of brentuximab vedotin in patients with relapsed/refractory Hodgkin lymphoma who have received autologous stem cell transplantation, from a Scottish healthcare payer perspective.

Methods: A Microsoft Excel-based partitioned survival model comprising three health states (progression-free survival [PFS], post-progression survival, and death) was developed. Relevant comparators were chemotherapy with or without radiotherapy (C/R) and C/R with intent to allogeneic hematopoietic stem cell transplantation (alloSCT). Data were obtained from the pivotal phase II single-arm trial in 102 patients (SG035-0003; NCT00848926), a systematic literature review and clinical expert opinions (where empirical evidence was unavailable). PFS and overall survival for brentuximab vedotin were estimated using 5-year follow-up data from SG035-0003, and extrapolated using event rates observed for comparator treatments from published survival data. Resource use included drug acquisition and administration; alloSCT; treatment of adverse events; and long-term follow-up. Deterministic and probabilistic sensitivity analyses were conducted to evaluate the impact of uncertainty.

Results: In the base case, the incremental cost-effectiveness ratio (ICER) for brentuximab vedotin was £38,769 per quality-adjusted life year (QALY) vs C/R, whereas C/R with intent to alloSCT was dominated by brentuximab vedotin. ICERs for brentuximab vedotin generated by the deterministic sensitivity analysis ranged between £32,000–£54,000 per QALY. Including productivity benefits reduced the ICER to £28,881 per QALY.

Limitations: Limitations include lack of comparative data from this single arm study and the heterogeneous population. Inconsistent baseline characteristic reporting across studies prevented complete assessment of heterogeneity and the extent of potential bias in clinical and cost-effectiveness estimates.

Conclusions: Although the base case ICER is above the threshold usually applied in Scotland, it is relatively low compared with other orphan drugs, and lower than the ICER generated using a previous data cut of SG035-0003 that informed a positive recommendation from the Scottish Medicines Consortium, under its decision-making framework for assessment of ultra-orphan medicines.  相似文献   

34.

This article takes as its central theme the idea that competition policy is merely one among many policies which can and should be used to promote competition in an economy. After having considered the importance of competition for any healthy economy, the article examines the inextricable links between competition and transition, in particular marketisation and liberalisation, and discusses in detail the scope for the use of various policies for competition in the transformation process. Within this discussion, particular attention is paid to the importance of the legal and institutional framework, the process of privatisation, macroeconomic stability, ease of entry, supply side policies, the role of small and medium-sized enterprises (SMEs), and trade policy in contributing to the development of a market economy. The article concludes by noting the extreme care that must be taken not only in the content of such policies but also in their implementation, something which is easily demonstrated by the experience of developed capitalist economies in the West.  相似文献   
35.
The authors report on the results of a telephone survey of 1,001 employees of seven large corporations conducted for the Business Roundtable as part of its public policy program. A set of 20 questions keyed to the Voluntary National Content Standards in Economics was embedded in the survey. A measure of economic literacy was constructed from the survey results. Greater economic literacy was associated with more overall education, more college economics coursework, high incomes, and being male. An examination of individual test questions revealed that previous college economics had substantial effects on employees' current economic literacy.  相似文献   
36.
37.
Although a large literature argues that European settlement outside of Europe during colonization had an enduring effect on economic development, researchers have been unable to assess these predictions directly because of an absence of data on colonial European settlement. We construct a new database on the European share of the population during colonization and examine its association with economic development today. We find a strong, positive relation between current income per capita and colonial European settlement that is robust to controlling for the current proportion of the population of European descent, as well as many other country characteristics. The results suggest that any adverse effects of extractive institutions associated with small European settlements were, even at low levels of colonial European settlement, more than offset by other things that Europeans brought, such as human capital and technology.  相似文献   
38.
39.
Review of Industrial Organization - With the coming into force of the Competition Act (2010), Kenya entered the world of modern competition policy. The 10&nbsp;years that has passed since has...  相似文献   
40.
需求响应计划旨在能源批发市场价格较高时,或是系统的可靠性受到损害时,能把用电量保持在较低的水平.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号