全文获取类型
收费全文 | 1119篇 |
免费 | 74篇 |
专业分类
财政金融 | 187篇 |
工业经济 | 84篇 |
计划管理 | 175篇 |
经济学 | 275篇 |
综合类 | 10篇 |
运输经济 | 15篇 |
旅游经济 | 29篇 |
贸易经济 | 252篇 |
农业经济 | 60篇 |
经济概况 | 104篇 |
邮电经济 | 2篇 |
出版年
2024年 | 2篇 |
2023年 | 17篇 |
2022年 | 10篇 |
2021年 | 20篇 |
2020年 | 43篇 |
2019年 | 57篇 |
2018年 | 67篇 |
2017年 | 65篇 |
2016年 | 52篇 |
2015年 | 42篇 |
2014年 | 50篇 |
2013年 | 117篇 |
2012年 | 53篇 |
2011年 | 72篇 |
2010年 | 56篇 |
2009年 | 57篇 |
2008年 | 50篇 |
2007年 | 42篇 |
2006年 | 36篇 |
2005年 | 39篇 |
2004年 | 38篇 |
2003年 | 23篇 |
2002年 | 40篇 |
2001年 | 15篇 |
2000年 | 20篇 |
1999年 | 19篇 |
1998年 | 7篇 |
1997年 | 10篇 |
1996年 | 5篇 |
1995年 | 4篇 |
1994年 | 4篇 |
1993年 | 5篇 |
1992年 | 8篇 |
1991年 | 2篇 |
1990年 | 2篇 |
1987年 | 1篇 |
1986年 | 7篇 |
1985年 | 5篇 |
1984年 | 3篇 |
1983年 | 7篇 |
1982年 | 4篇 |
1981年 | 1篇 |
1980年 | 5篇 |
1979年 | 1篇 |
1978年 | 1篇 |
1977年 | 3篇 |
1976年 | 1篇 |
1975年 | 2篇 |
1974年 | 1篇 |
1971年 | 1篇 |
排序方式: 共有1193条查询结果,搜索用时 0 毫秒
191.
Matthew Creighton 《Local Economy》1992,7(1):39-50
This article reviews the training projects and initiatives supported by Edinburgh District Council and draws conclusions from the successful track record of a number of the projects. These refer mainly to factors which contribute to the success of training for the long-term unemployed and therefore may be useful to anyone developing new training projects. Similarly, they may help those who are pondering how Employment Training may usefully develop.
Edinburgh District Council's support for training lies within its economic development function, as opposed to the Regional Council, where it lies with their education function. With this in mind, the District Council's criteria for supporting training have had to be plainly established. These are, that projects must be “exemplary, innovative, and catalytic”, and there must be no duplication of other provision. They should address specific needs amongst the unemployed, and must supply skills which are needed for the development of Edinburgh's economy. 相似文献
Edinburgh District Council's support for training lies within its economic development function, as opposed to the Regional Council, where it lies with their education function. With this in mind, the District Council's criteria for supporting training have had to be plainly established. These are, that projects must be “exemplary, innovative, and catalytic”, and there must be no duplication of other provision. They should address specific needs amongst the unemployed, and must supply skills which are needed for the development of Edinburgh's economy. 相似文献
192.
193.
194.
A variety of methods and empirical techniques are now available for estimating dynamic economic relationships. Unfortunately, most dynamic modeling procedures rely heavily on the sample data for specification. This is due to a lack of a priori information useful for determining the appropriate lag structure. However, there is frequently a rich source of information that can be used to define lag structures in agricultural supply models. This information is related to the biological and physiological processes characterizing agricultural production. In this paper, a quarterly econometric model of supply response in the U.S. hog industry is specified and estimated. This model incorporates relevant biological features of hog production directly into the specification. The structural integrity of the model is evaluated by examining post-sample predictive ability and mean-path elasticities. The results indicate performance that is consistent with observed behavior in the U.S. hog industry. Nous disposons aujourd'hui de toute une gamme de méthodes et de techniques empiriques pour ?estimation des rapports économiques dynamiques. Malheureusement, la plupart des méthodes de modélisation dynamique dépendent étroitement, pour leurs spécifications, sur des données échantillonnées. Ceci découle ?un manque ?informations a priori utiles pour la détermination de la structure de retard appropriée. Toutefois, on dispose fréquemment ?une riche source ?informations qui peuvent servir à définir les structures de retard dans les modèles de ?offre en agriculture. Cette information est liée aux processus biologiques et physiologiques caractérisant la production agricole. Dans le présent document, nous procédons à la spécification et à ?estimation ?un modèle économétrique trimestriel du comportement de ?offre dans le secteur américain du pore. Ce modèle incorpore directement dans la spécification les caractéristiques biologiques pertinentes de la production porcine. Nous évaluons ?intégrité structurale du modèle en examinant ?aptitude prédictive post-échantillonnage et les valeurs moyennes ?élasticité. Nos résultats laissent conclure à une performance qui vient corroborer le comportement observé dans le secteur américain du porc. 相似文献
195.
196.
Matthew Cobbett 《Development Southern Africa》1984,1(3-4):369-385
The social and economic impact of sugarcane farming in two rural communities in KwaZulu is described. Attention is focused on the cash benefits which accrue to those smallholders cultivating the crop. It was found that only a small percentage of smallholders could expect a monthly income equivalent to the household subsistence level. The majority of smallholders will continue to depend upon migrant remittances to meet their subsistence requirements as they will only obtain a supplementary income from sugarcane. The result of this is continued dependence on the sugarcane mill for financial assistance and the de facto loss of control by the smallholder over the utilization of his land. It is recommended that where the smallholder possesses less than three to four hectares of arable land, he should be encouraged to cultivate traditional food crops on a scientific basis rather than sugarcane. 相似文献
197.
198.
It is well documented that a firm may choose to offer underpriced securities in an initial public offer. An open question is why investment banks do not retain underpriced offers in their portfolio. We argue that the distribution of underpriced securities allows banks of high qualify to signal their value to their customers, promoting in this way their other product lines. We show that the total dollar value of underpriced securities distributed (rather than the percentage value) acts as the signal. We also find that, all else equal, larger customers and those with more elastic demand functions receive n larger total dollar value of underpricing. 相似文献
199.
200.
Industrial hog farming is an increasingly important land use in Mexico. Despite the known public health and environmental risks associated with this factory-style model of production, hog concentrated animal feeding operations (CAFOs) remain unregulated. Legal standards regarding the establishment and operation of swine CAFOs are lacking at municipal, regional, and federal levels. There are currently no restrictions on the size, concentration, or geographic location of operations, and public notice to surrounding and downstream communities is generally not required. These lax environmental standards facilitate swine CAFO expansion in regions such as the Perote Valley, with potential for negative long-term impacts on public health, community well-being, water resources, ecosystems, and climate. 相似文献