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   4758篇
  免费   265篇
  国内免费   64篇
财政金融   409篇
工业经济   185篇
计划管理   1091篇
经济学   955篇
综合类   529篇
运输经济   62篇
旅游经济   122篇
贸易经济   710篇
农业经济   551篇
经济概况   473篇
  2024年   8篇
  2023年   96篇
  2022年   78篇
  2021年   145篇
  2020年   213篇
  2019年   157篇
  2018年   127篇
  2017年   167篇
  2016年   179篇
  2015年   168篇
  2014年   338篇
  2013年   478篇
  2012年   339篇
  2011年   446篇
  2010年   334篇
  2009年   319篇
  2008年   330篇
  2007年   246篇
  2006年   261篇
  2005年   166篇
  2004年   127篇
  2003年   86篇
  2002年   81篇
  2001年   51篇
  2000年   35篇
  1999年   32篇
  1998年   13篇
  1997年   13篇
  1996年   13篇
  1995年   5篇
  1994年   13篇
  1993年   4篇
  1992年   4篇
  1991年   4篇
  1989年   1篇
  1988年   2篇
  1987年   1篇
  1985年   3篇
  1984年   1篇
  1983年   2篇
  1979年   1篇
排序方式: 共有5087条查询结果,搜索用时 140 毫秒
71.
随着我国经济持续增长和利率市场化不断推进,个人投资者资产管理方式及渠道日益丰富,而储蓄国债因品种单一、购买渠道狭窄、流动性不强等因素,与其他投资品种相比失去了往日"金边国债"魅力,储蓄国债发行和管理工作面临着挑战。本文从问卷调查入手,深入分析了吉林省储蓄国债投资者的结构特征、行为特点和投资偏好,并就优化期限结构、丰富国债品种、完善发行兑付渠道、强化宣传以及拓展农村市场五个方面提出意见建议,供参考。  相似文献   
72.
文人园林营建过程中,园居植物的获取、选择、栽培以及品赏亦是一个较为复杂而必备的过程。江南常熟静圃(现名赵园)为晚清文人赵烈文所建。通过分析赵烈文撰写的《能静居日记》,并结合其他史料考证,在当时沿袭的文人审美标准下对同治四年至光绪十三年静圃中的植物应用过程及方式进行阐释,旨在获得关于晚清时期江南文人园林植物的历史性认识:静圃建园过程中植物主要通过苏州花肆购买、友人间赠送以及与种树人直接交易等方式获取;园中植物虽以地景、盆景区分,但种类选择与高濂、文震亨、李渔等给出的品赏范围并无明显差异;在定期维护的基础上,须保证后园可四时赏花,其中以春桃、夏荷、秋菊、冬梅为最,且植物的实用功能一直被延续。  相似文献   
73.
Since the 1990s, Argentinean dairy‐processing cooperatives have lost considerable amounts of members and market share. We analyse their current role by investigating the characteristics of farmers who continue delivering to them and price differentials between cooperatives and investor‐oriented firms (IOFs). A probit regression model applied to 917 farmers suggests that cooperative farmers are more disadvantaged than farmers delivering to IOFs in terms of education, farm size and productive technology. Moreover, t‐tests applied to data representing 70 per cent of national volume indicate that farmers delivering to cooperatives are between 11 per cent and 29 per cent smaller than those delivering to IOFs, depending on province. A hierarchical multilevel regression model applied to 9,720 transactions among farmers and processors shows that, after controlling for quantity and quality, cooperatives pay lower (3.5%) but more stable prices than IOFs. In a context of rapid structural change, we observe a market in which larger farmers deliver to IOFs and smaller farmers deliver to cooperatives and conclude that, at the expense of paying lower prices, cooperatives may act as buyers of last resort for otherwise disadvantaged farmers.  相似文献   
74.
为有效地帮助企业快速找到合适的供应商合作伙伴,采用直觉模糊集、评分函数等方法对TOPSIS评估法进行优化,并以此为基础建立了一种供应商选择模型。首先,采集和评估供应商的产品质量、产品价格、产品交货的可靠性、供应位置、财务情况、库存水平、劳资关系、发展能力和技术能力等相关信息,由专家给出主观评估信息,汇总为综合属性值;然后,通过直觉模糊熵确定各评估指标的权重;最后,综合考虑供应商选择决策过程中的多个目标和标准,应用改进TOPSIS法的对供应商进行分类选择。结果显示,基于改进TOPSIS法的供应商选择模型能够较准确地反映出各供应商的真实水平和对企业的潜在价值,可以有效地解决不确定条件下对供应商的选择问题,提高了供应商选择结果的可靠性。改进后的模型简便易行,具有良好的稳定性,对于合理制定企业供应商选择标准以及进一步优化决策模型具有一定的借鉴意义。  相似文献   
75.
Sex selection has been linked to son preference and discrimination against girls in many Asian countries. In this study, we shed light on the shaping role of rice–wheat cropping system to the subsequent gender inequality in China. Using an individual-level dataset compiled from a national scale survey and an archaeology publication, we show regional differences in gender inequality across China: parents show strong gender discrimination against girls in wheat regions. And 15.2 percentage points more parents from wheat regions engage in successful sex selection than those from non-wheat regions. The mechanism analysis reveals that women empowerment matters.  相似文献   
76.
本文对农村金融中的常态“非中介化”和农户货币偏好规律进行了探讨,揭示伴随农户借贷行为而产生农户融资渠道的转变和货币偏好,这两种经济现象背后的实质是信用的核心———普适性信任在发生作用,提出通过建立农户贷款担保基金和强化农村合作经济组织建设,以重构农户信用。同时,通过完善农村信用社的经营机制和产权结构,优化对农户信用缺失约束的外部环境,以增强双方的信任度,从而达到消除农村金融中的常态“非中介化”等对农户收入增长的不利因素。  相似文献   
77.
在理解农民合作的内在机理中,政府的角色是不可或缺的,但政府的介入往往形成一个"悖论"。通过分析新中国成立以来农民的合作历史,展示了政府进退对农民合作的影响。结合目前农民合作的现状,分析由于政府缺位,制度资源供给不足,农民合作陷入困境。因此,由于农民自组织资源的局限性,政府介入农民合作是必要的,但要注意介入的尺度,要在公共决策与私人决策之间保持平衡。  相似文献   
78.
Whilst Geographical Information Systems (GIS) are now used more commonly in transport research and modelling, GIS techniques were used in this study to select similar sample areas (in terms of geography and census attributes) for data collection. For this purpose, a GIS mapping system for Tyne and Wear, UK, was built. The system included topographic maps of the area, boundary maps of Lower Super Output Areas (LSOA), and aggregated census statistics datasets for LSOAs. Criteria relating to census attributes and the nature of transport were employed to identify ‘hotspots’ by GIS enquiry to provide suitably matching areas, which then formed the basis of the sampling frame.The research project was concerned with commuters’ travel choices and so the study needed to identify commuters. In this case-study context, it is not possible to select fully homogeneous areas, so the GIS ‘hotspots’ approach allowed the identification of areas where there were a high concentration of commuters with multiple alternatives for travel to work. A pilot study showed that the GIS origin-based approach was good in collecting a balanced sample, as compared to an employment-based destination survey. This paper explores the benefits and costs of these origin- and destination-based approaches. In the origin-based home sample, households with paper-based surveys were targeted after identification by GIS. This origin approach requires more data preparation compared to the alternative of an employer-based, destination-based sample that could use online survey methodologies.The paper concludes by identifying GIS as an important tool in selecting a sample area for data collection using multiple criteria, but argues that plans for data collection need to be flexibly constructed to overcome unexpected challenges. Although this paper focuses on a transport research case study, the methodology presented can be applied to survey design and selection of sample areas in other disciplines.  相似文献   
79.
This study examines the influences of airline global alliances on the purchase intention of international air passengers in Taiwan. The findings indicate positive relationships between global airline alliances, brand equity, brand preference and purchase intention with a moderation effect of involvement impacting on the relationship between global airline alliances and brand equity, and the relationship between brand preferences and purchase intention. In particular, for highly involved passengers, the effect of global airline alliances on brand equity, and brand preference on purchase intention, is significant.  相似文献   
80.
徐岚清 《价值工程》2015,(10):27-28
为了解决在B2C交易实现过程中,由于物流配送供应商的选择不当,而出现配送周期长、费用高、退货退款率增加等问题,本文利用因子分析法探索选择物流配送供应商的合理方法,运用便捷有效的方法帮助电商选择适合自己的物流配送供应商。  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