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111.

Volume Contents

Contents of Volume 28  相似文献   
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Using a sample of organic producers in Saskatchewan, Canada, this study uses a Tobit model to identify the factors that discourage or encourage the complete adoption of organic farming and to assess why farmers differ in the share of total cultivated crop area they allocate to organic practices. In particular, the study evaluates the effect of transaction costs on the decision to convert partially or completely from conventional to organic practices. The results highlight the importance of lowering certain transaction costs to encourage the adoption of organic management practices. Significant transaction costs were found to include infrastructure and services, satisfaction with marketer performance, marketing problems, and Internet use. Results suggest that farmers with smaller land holdings are more inclined to undertake complete adoption. While the education levels of organic farmers show no significant effect on the probability of adoption, younger organic farmers allocate significantly less of their cultivated area to organic practices. À partir d'un échantillon de producteurs de cultures biologiques de la Saskatchewan, au Canada, nous avons utilisé un modèle Tobit pour déterminer les facteurs qui encouragent ou découragent l'adoption totale des pratiques agricoles biologiques et les raisons pour lesquelles le pourcentage des superficies consacrées aux cultures biologiques varie d'un producteur à l'autre. Nous avons également examiné les répercussions des coûts de transaction sur la décision de passer, en totalité ou en partie, des pratiques conventionnelles aux pratiques biologiques. Les résultats ont fait ressortir l'importance de réduire certains coûts de transaction afin d'encourager l'adoption des méthodes agronomiques biologiques. Les coûts de transaction les plus importants incluaient les infrastructures et les services, l'efficacité des intermédiaires, les problèmes liés à la mise en marché et l'utilisation d'Internet. Les résultats autorisent à penser que les producteurs agricoles qui possèdent de petites superficies sont plus enclins à adopter en totalité l'agriculture biologique. Alors que le niveau de scolarité des producteurs ne semble pas avoir de répercussions sur la probabilité d'adopter l'agriculture biologique, les jeunes producteurs de cultures biologiques consacrent beaucoup moins de leurs superficies cultivées à la culture biologique.  相似文献   
114.
在如何应对气候变化的讨论中,最有争议的问题之一是REDD(减少毁坏和林地退化造成的碳排放)。在基于市场减排战略中的作用,分析审查REDD活动的成本表明,REDD不但在减少GHG排放的全球战略中发挥重要作用,还可以保护热带雨林提供生物多样性和重要生态系统服务。但是REDD项目限于在一定地域,除非全球森林都被纳入REDD,否则漏洞无法消除,此外,REDD在政策设计问题上存在一定争议,因此还需进一步的研究讨论。  相似文献   
115.
ABSTRACT

Afghanistan is one of the most dangerous countries for women and has the sixth lowest women’s employment rate globally. Evidence shows that security concerns prevent women from working, but there is little work estimating the magnitude of or mechanism behind these effects. We address this gap in the literature by estimating the relationship between increased terrorist attacks and women’s employment using the Global Terrorism Database (GTD) and the 2015 Demographic and Health Survey (DHS). We find the number of attacks is negatively associated with men’s and women’s employment, yet the relative magnitude is larger for women due to their low employment rate. Conversely, we find that an increase in fatalities is associated with higher women’s employment, suggesting that women replace men that have died from attacks. This research illuminates a potential link between women’s employment and terrorism, thus adding to the ever-increasing knowledge of the costs of conflict.  相似文献   
116.
This study describes motorized mobility scooter (MMS) rider-related fatalities in the older Australian population during the years 2000–2011, identified from the National Coronial Information System. Seventy-seven fatalities were identified, most aged 80 years or older (74.1%) and males predominated (76.6%). Most deaths (88.3%) resulted from collisions with motor vehicles or falling from the MMS. These findings are consistent with the reported morbidity data. Challenges to MMS case identification included lack of specification in reports to Coroners and inadequate codes. Improved specificity and coding are necessary to fully describe the extent of MMS-related injury. This study raises the issue of emerging largely unregulated consumer products. Further research is required to understand the uptake and use of MMS in the ageing population. Strategies are needed to decrease rider injuries whilst meeting community mobility needs.  相似文献   
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Irrigated rice farming in Costa Rica involves use of agrochemicals that pollute important wetlands ecosystems, such as the Palo Verde National Park in the northeastern province of Guanacaste. We characterize rice farming in this region, apply duality theory to estimate conditional factor demand for fertilizer, and then simulate the impacts of alternative policies on fertilizer use. Using a normalized profit function, we also estimate policy impacts on farmer profits. As expected, prices of rice seeds and fertilizer significantly affect use of fertilizer. Price incentives or taxes could encourage farming practices that reduce the threat to downstream ecosystems.  相似文献   
119.
During the past two decades, food assistance policy has shifted toward local or regional food purchases and away from purchases from donor countries. Although most local and regional procurement occurs through hard tendering processes open to large‐scale firms and farms, there is growing interest in identifying how and whether to procure from smallholder farmer organizations (FOs). To date, little is known about the drivers of successful contracting with FOs. We utilize data from the United Nations World Food Programme Purchase for Progress pilot in three East African countries to predict defaults on contracts. We examine four possible explanations: country contexts, FO characteristics, prior experience with contracts, and contract modalities and their relationship to local spot market prices. The single most important predictor of default is the increase in market prices between contract approval and delivery. Yet, although increases in market prices are linked to increases in default, this relationship is decreasing in contract size, indicating search costs associated with breaking contracts. Our findings yield both generalizable and context‐specific insights about whether—and when—procuring from smallholder farmers can be successfully integrated into the food assistance toolkit.  相似文献   
120.
This paper utilizes a panel data set on two major fiscal reforms in China—the fiscal contract system (FCS) in 1980-93 and the tax-sharing system (TSS) after 1994—to examine how the various aspects of intergovernmental fiscal arrangement affect the ability of the fiscal system to facilitate risk sharing. The high revenue decentralization and the proliferation of extrabudgetary revenue items in the FCS generally weakened the central government's ability to support interprovincial risk sharing. This situation was reversed in the TSS period. In addition, the effect of central-to-local transfer (transfer-in) and local-to-central transfer (transfer-out) on risk sharing was asymmetric in the sense that transfer-out enhances risk sharing but transfer-in does not.  相似文献   
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