全文获取类型
收费全文 | 1486篇 |
免费 | 54篇 |
专业分类
财政金融 | 297篇 |
工业经济 | 111篇 |
计划管理 | 247篇 |
经济学 | 352篇 |
综合类 | 12篇 |
运输经济 | 22篇 |
旅游经济 | 38篇 |
贸易经济 | 257篇 |
农业经济 | 100篇 |
经济概况 | 104篇 |
出版年
2023年 | 12篇 |
2021年 | 6篇 |
2020年 | 20篇 |
2019年 | 28篇 |
2018年 | 42篇 |
2017年 | 25篇 |
2016年 | 42篇 |
2015年 | 26篇 |
2014年 | 35篇 |
2013年 | 207篇 |
2012年 | 37篇 |
2011年 | 33篇 |
2010年 | 49篇 |
2009年 | 38篇 |
2008年 | 48篇 |
2007年 | 45篇 |
2006年 | 53篇 |
2005年 | 53篇 |
2004年 | 29篇 |
2003年 | 41篇 |
2002年 | 31篇 |
2001年 | 39篇 |
2000年 | 48篇 |
1999年 | 41篇 |
1998年 | 37篇 |
1997年 | 27篇 |
1996年 | 23篇 |
1995年 | 21篇 |
1994年 | 32篇 |
1993年 | 24篇 |
1992年 | 27篇 |
1991年 | 16篇 |
1990年 | 15篇 |
1989年 | 16篇 |
1988年 | 22篇 |
1987年 | 16篇 |
1986年 | 20篇 |
1985年 | 31篇 |
1984年 | 24篇 |
1983年 | 21篇 |
1982年 | 21篇 |
1981年 | 21篇 |
1980年 | 20篇 |
1979年 | 11篇 |
1978年 | 14篇 |
1977年 | 6篇 |
1975年 | 9篇 |
1974年 | 8篇 |
1973年 | 9篇 |
1971年 | 4篇 |
排序方式: 共有1540条查询结果,搜索用时 31 毫秒
61.
This paper explores the issue of a simultaneous reduction in tariffs at different stages of a vertically related market where each stage is oligopolistic. When vertically related markets are characterized as a successive oligopoly, reducing tariffs by an equivalent amount on upstream and downstream imports will have a differential effect on market access and hence profits at each stage as a result of a combination of horizontal and vertical effects. These differential effects have implications for the tariff structure post‐trade reform. 相似文献
62.
Social media? Get serious! Understanding the functional building blocks of social media 总被引:1,自引:0,他引:1
Jan H. Kietzmann Kristopher Hermkens Ian P. McCarthy Bruno S. Silvestre 《Business Horizons》2011,(3):156
Traditionally, consumers used the Internet to simply expend content: they read it, they watched it, and they used it to buy products and services. Increasingly, however, consumers are utilizing platforms—such as content sharing sites, blogs, social networking, and wikis—to create, modify, share, and discuss Internet content. This represents the social media phenomenon, which can now significantly impact a firm's reputation, sales, and even survival. Yet, many executives eschew or ignore this form of media because they don’t understand what it is, the various forms it can take, and how to engage with it and learn. In response, we present a framework that defines social media by using seven functional building blocks: identity, conversations, sharing, presence, relationships, reputation, and groups. As different social media activities are defined by the extent to which they focus on some or all of these blocks, we explain the implications that each block can have for how firms should engage with social media. To conclude, we present a number of recommendations regarding how firms should develop strategies for monitoring, understanding, and responding to different social media activities. 相似文献
63.
This article introduces a newly discovered household budget data set for 1904. We use these data to estimate urban poverty among working families in the British Isles. Applying Bowley's poverty line, we estimate that at least 23 per cent of people in urban working households and 18 per cent of working households had income insufficient to meet minimum needs. This is well above Rowntree's estimate of primary poverty for York in 1899 and high in the range that Bowley found in northern towns in 1912–13. The skill gradient of poverty is steep; for instance, among labourers' households, the poverty rates are close to 50 per cent. Measures of the depth of poverty are relatively low in the data, suggesting that most poor male-headed working households were close to meeting Bowley's new standard. 相似文献
64.
The development of an effective spatial data infrastructure (SDI) often occurs in a fragmented organizational environment requiring a high level of inter-organizational collaboration. Different organizations from various jurisdictions need to work together closely when agreeing on how they will jointly register, store, use and share data and how they will make their data available to the wider society. However, this collaboration is generally regarded as very difficult. For example people often resist data sharing across organizational boundaries due to loss of control, power and independency. Organizational issues are thus considered one of the fundamental constraints to inter-organizational sharing of spatial data. 相似文献
65.
Ranking Crop Yield Models: A Comment 总被引:1,自引:0,他引:1
This comment discusses key specification issues that may have affected the performance and, therefore, the ranking of parametric models that were compared in a recent AJAE article. A procedure to obtain the most flexible parametric model specification possible, given the particular probability distribution function on which the model is based is presented. These specifications also allow for standardized and, therefore, more valid comparisons across parametric models that are based on different probability distributions. Finally, the comment cautions against generalization of the rankings in that AJAE article and recommends that these more flexible specifications be adopted in future comparisons and applications. 相似文献
66.
67.
There is a recognized need for the participation of local communities in designing and implementing agricultural interventions for the sustainable intensification in smallholder systems. This study examines the perspectives of local community leaders towards the widely promoted, but not widely adopted, practice of Conservation Agriculture (CA) in African smallholder systems. Perceptions from 47 community leaders (both from traditional local authorities and farmer organizations) across six African countries are documented regarding how CA matches the wants, needs and capabilities of farmers in their communities. While community leaders generally perceived CA as potentially beneficial, they also indicated that CA is not currently perceived as feasible within their communities and hence has limited relevance. Three key themes were identified that limit both CA use and sustainable intensification more generally: [1] a perceived reluctance of farmers to engage with the community platform as part of a higher input, market-oriented production system; [2] informational constraints due to non-functional exchange mechanisms; and [3] a lack of local adaptation of CA underscored by the persistence of top-down, linear research and extension approaches. Through greater understanding of local perspectives, a clearer picture emerges of the need for greater participatory engagement and local adaptation if sustainable intensification of African smallholder agricultural systems is to be achieved. 相似文献
68.
Ian Steedman 《Metroeconomica》1989,40(1):3-15
Pasinetti's vertically integrated H matrix has been much used in economic theory but his other vertically integrated matrix, G — which is of a quite different nature — has been little noticed. This paper considers the nature of the G matrix, its relationship to H, and varous issues — concerning consumption and growth, value added, sales revenue and differential growth or profit rates — for the analysis of which G is a very useful analytical tool. 相似文献
69.
In the literature on Olympic legacies and impacts, there is a dearth of materials that specifically address the issue of Olympic impact for non-hosting regions. The literature tends to deal with impacts at a national level, or at a hosting-city region level, neglecting in large part the degree to which benefits can be leveraged by non-hosting regions. A further limitation identified in the literature is a failure to engage in detailed formal evaluation of policy implementation where assertions of potential policy impact are based on untested assumptions. This study is intended to address both of these concerns. It presents an empirical, ‘bottom-up’ application of a Realist Evaluation framework to assess the impact of a policy initiative – Workplace Challenge – aimed at leveraging enhanced sports participation in a non-hosting region – Leicestershire – in the period leading up to the 2012 Games. In doing so, it seeks to identify which causal mechanisms worked within this particular context to produce the observed outcomes. The evaluation results demonstrate that the programme represented a positive approach to fostering regular engagement with sport and physical activities for some groups in some types of organisations, and that awareness and motivational factors associated with the London 2012 Games are, in this case, linked (albeit weakly) to an increase in sport and physical activity participation for specific groups taking part in the programme in particular organisational contexts. 相似文献
70.