全文获取类型
收费全文 | 4601篇 |
免费 | 279篇 |
国内免费 | 52篇 |
专业分类
财政金融 | 121篇 |
工业经济 | 509篇 |
计划管理 | 1006篇 |
经济学 | 1110篇 |
综合类 | 377篇 |
运输经济 | 27篇 |
旅游经济 | 45篇 |
贸易经济 | 361篇 |
农业经济 | 739篇 |
经济概况 | 637篇 |
出版年
2024年 | 10篇 |
2023年 | 77篇 |
2022年 | 89篇 |
2021年 | 133篇 |
2020年 | 143篇 |
2019年 | 104篇 |
2018年 | 94篇 |
2017年 | 136篇 |
2016年 | 156篇 |
2015年 | 181篇 |
2014年 | 378篇 |
2013年 | 389篇 |
2012年 | 462篇 |
2011年 | 586篇 |
2010年 | 436篇 |
2009年 | 285篇 |
2008年 | 250篇 |
2007年 | 228篇 |
2006年 | 188篇 |
2005年 | 135篇 |
2004年 | 83篇 |
2003年 | 87篇 |
2002年 | 67篇 |
2001年 | 64篇 |
2000年 | 47篇 |
1999年 | 38篇 |
1998年 | 12篇 |
1997年 | 11篇 |
1996年 | 9篇 |
1995年 | 24篇 |
1994年 | 4篇 |
1993年 | 6篇 |
1992年 | 6篇 |
1991年 | 2篇 |
1990年 | 3篇 |
1989年 | 1篇 |
1987年 | 1篇 |
1985年 | 1篇 |
1984年 | 5篇 |
1983年 | 1篇 |
排序方式: 共有4932条查询结果,搜索用时 15 毫秒
81.
Ali M. Kutan Sudharshan Reddy Paramati Mallesh Ummalla Abdulrasheed Zakari 《新兴市场金融与贸易》2018,54(8):1761-1777
This research paper aims to explore the role of FDI inflows and stock market development on the promotion of renewable energy consumption. Furthermore, study investigates the effect of renewable energy consumption on CO2 emissions and economic output across a panel of Brazil, China, India, and South Africa. Study utilizes annual data from 1990 to 2012 and employs various robust panel econometric techniques. The findings confirm that both FDI inflows and stock market development play an important role in promoting renewable energy consumption. The results also reveal that renewable energy consumption helps to mitigate the growth of CO2 emissions and promotes economic development. 相似文献
82.
《Socio》2019
The public sector plays an important role in the German “Energiewende”. Besides energy management in municipal properties the local government can also support the switch to renewable energy sources through a change in energy supply structures within in their region. Methods of Multi-Criteria Decision Making (MCDM) from Operations Research are helpful regarding that challenge, as they are able to assess the sustainability of local energy concepts, since they not only offer stakeholders the opportunity to participate, but also consider multiple conflicting criteria. In that way, the acceptance of local energy projects and the participation of stakeholders in the decision process are supported. The case study presented in this paper illustrates the results of a MCDM process employed to identify a sustainable bioenergy concept in a rural village in Lower Saxony, Germany. Our analysis revealed not only the opportunities and challenges associated with executing an MCDM process to support the realization of local bioenergy projects, but also discusses potential limitations of the methods. 相似文献
83.
Lorenzo Ardito Antonio Messeni Petruzzelli Federica Pascucci Enzo Peruffo 《Business Strategy and the Environment》2019,28(1):185-197
The present paper investigates the relationship between the involvement of family firms in R&D collaborations aimed at developing green solutions and the value of resulting innovations. To dig into this relationship, the moderating effects of two proximity dimensions (i.e., geographical distance and technological relatedness) are also assessed. Analyses are based on a sample of 156 joint patents classified into the “Alternative energy production” field, as defined by the International Patent Classification Green Inventory and successfully filed at the United States Patent and Trademark Office in the period 1997–2010 by publicly listed companies. According to our conjectures, results reveal a positive relationship between the involvement of family firms and green innovation value. Moreover, our findings show that this relationship is hindered when partners are geographically distant or technologically proximate. Eventually, we contribute to the literature on green innovation by unveiling under which conditions inter‐firm R&D collaborations lead to more valuable innovations. 相似文献
84.
农作物秸秆综合利用和禁烧管理国家法规综述与立法建议 总被引:5,自引:0,他引:5
[目的]梳理秸秆综合利用和禁烧管理方面的法律、行政法规和规章,提出秸秆综合利用和禁烧管理的立法建议,为完善相关法规,从法律上保障秸秆综合利用水平的持续提高和秸秆禁烧管理工作的顺利开展提供相关建议。[方法]在系统梳理相关资料、文献的基础上,就国家现行法律和行政规章对秸秆综合利用的明文规定、对秸秆利用相关产业发展的规定进行综述,并就相关法律、规章对农作物秸秆禁烧的明文规定、秸秆禁烧治安管理和秸秆故意焚烧犯罪量刑的法律依据等进行归纳分析。最后,通过分析中国现行法规和行政指导文件在秸秆综合利用与秸秆禁烧管理方面存在的欠缺,提出必要的修订建议。[结果]随着时间的推移,我国法律对秸秆综合利用的规定日渐具体和完善。但直到目前,这些法律对秸秆综合利用的规定仍然缺失。有必要加快立法进程,完善相关法律、法规。[结论]建议对涉及秸秆利用方面的某些法规进行必要的修订;制定《耕地质量保护条例》,并将秸秆还田作为耕地质量保护的必要技术手段;对秸秆禁烧区外的秸秆限制焚烧从国家层面作出明确规定;借鉴国外经验,制定《生物质能条例》。 相似文献
85.
[目的]生物质能源具有污染少、可再生等特点,合理地对其开发利用是黑龙江省重点国有林区经济转型发展的一种探索。通过对黑龙江省重点国有林区生物质能源资源量的计算,明确了生物质能源的可利用潜力及变化趋势,以期为其产业发展的政策制定提供理论参考。[方法]文章利用自下而上估算法,以林木生物质的资源量和农作物秸秆的产量为原始数据,对2005—2015年黑龙江省重点国有林区生物质能源可利用潜力进行评价。[结果](1)研究期间,黑龙江省重点国有林区林木生物质资源可利用潜力小幅下降,农作物秸秆资源可利用潜力稳步上升。(2)林木生物质资源中,商品林采伐剩余物可利用潜力骤降,森林抚育剩余物可利用潜力增加;农作物秸秆资源中,粮食作物秸秆可利用潜力逐年上升。(3)黑龙江省重点国有林区生物质能源可利用潜力随着国家"天保工程"和"重点国有林区全面禁止天然林商业性采伐"政策的实施而发生变化。[结论]黑龙江省重点国有林区生物质能源丰富,可利用潜力较大,其中农作物秸秆资源可利用潜力增速较快。 相似文献
86.
本文以“主体-技术”协同视角来分析战略性新兴产业创新网络形成的内在机理和分类模式。在结合2-模网络理论基础上,从核心技术和创新主体两个维度出发,将战略性新兴产业创新网络分为单核心实验室型、单核心产业链型、单核心辅助型、单核心复合型、多核心实验室型、多核心产业链型、多核心辅助型和多核心复合型。同时,以中国新能源汽车产业为例,通过实证分析发现:除了单核心辅助型和多核心辅助型之外,其它6种模式均存在,并进一步对其创新网络的分类模式及相关特征进行了全面分析。 相似文献
87.
新能源汽车产业发展商业模式研究 总被引:1,自引:0,他引:1
商业模式是新能源汽车产业化的关键。从核心商业要素上看,新能源汽车产业主要出现了降低新能源汽车电池成本、解决能源供给问题和满足消费者需求三种核心商业要素的商业模式;从产业组织上看,新能源汽车产业主要有拓展型、介入型和合作型三种商业模式。为了构建有效的新能源汽车商业模式,需要明确发展重点、加大宏观指导、开展示范运营和创新试点工作以及协调好相关利益等。 相似文献
88.
Tullia Jack 《International Journal of Consumer Studies》2017,41(1):70-78
In line with increasing international trends of energy efficient devices on the market and in households, domestic consumption of water and energy should be decreasing. However in Sweden, domestic per capita water consumption is not decreasing rapidly and energy consumption is actually increasing. This suggests that physical contexts are not the only factor shaping resource demand. People are also influenced by collective conventions; what we think is normal has a significant say in what we do, and the resources we consume in the course of everyday life. This paper explores the way context shapes what people do from both a material infrastructures and social infrastructures perspective, using cleanliness in Sweden as a case study. First, material infrastructures in Sweden are mapped, including device ownership, water, energy and time consumed related to cleanliness. Second, qualitative interviews with Swedish people aim to show the social structuring of cleanliness. Understanding the interplay between physical and social structures has potential implications for decreasing resource intensity in everyday life. 相似文献
89.
90.
Bipasha Baruah 《Feminist Economics》2015,21(2):53-76
This paper identifies opportunities and constraints that low-income women face in accessing livelihoods in the renewable-energy sector in India through qualitative and quantitative research conducted in collaboration with The Energy Resources Institute (TERI) and the Self Employed Women's Association (SEWA) in 2012–13. Whereas previous research has focused on women mostly as end users of solar and biomass technologies, this research attempts also to understand women's potential as entrepreneurs, facilitators, designers, and innovators. Findings reveal that although access to technology and employment in the energy sector is limited by inadequate purchasing power and low social status, there is tremendous potential to create livelihoods for women at all levels of the energy supply chain. Broader findings indicate that women can gain optimal traction from employment in the energy sector only if there are wider socially progressive policies in place, including state intervention to create a robust social welfare infrastructure and accessible, high-quality, public services. 相似文献