全文获取类型
收费全文 | 1788篇 |
免费 | 97篇 |
国内免费 | 17篇 |
专业分类
财政金融 | 52篇 |
工业经济 | 109篇 |
计划管理 | 267篇 |
经济学 | 498篇 |
综合类 | 185篇 |
运输经济 | 209篇 |
旅游经济 | 26篇 |
贸易经济 | 140篇 |
农业经济 | 227篇 |
经济概况 | 189篇 |
出版年
2024年 | 4篇 |
2023年 | 29篇 |
2022年 | 39篇 |
2021年 | 110篇 |
2020年 | 83篇 |
2019年 | 53篇 |
2018年 | 33篇 |
2017年 | 74篇 |
2016年 | 79篇 |
2015年 | 78篇 |
2014年 | 139篇 |
2013年 | 99篇 |
2012年 | 118篇 |
2011年 | 143篇 |
2010年 | 112篇 |
2009年 | 102篇 |
2008年 | 111篇 |
2007年 | 83篇 |
2006年 | 83篇 |
2005年 | 77篇 |
2004年 | 50篇 |
2003年 | 34篇 |
2002年 | 17篇 |
2001年 | 28篇 |
2000年 | 25篇 |
1999年 | 21篇 |
1998年 | 15篇 |
1997年 | 9篇 |
1996年 | 13篇 |
1995年 | 13篇 |
1994年 | 12篇 |
1993年 | 4篇 |
1992年 | 5篇 |
1991年 | 4篇 |
1990年 | 1篇 |
1985年 | 1篇 |
1979年 | 1篇 |
排序方式: 共有1902条查询结果,搜索用时 15 毫秒
141.
Yat-wah Wan Raymond K. Cheung Jiyin Liu Judy H. Tong 《Journal of Air Transport Management》1998,4(4):201-207
The move of Hong Kong International Airport from the city centre to a suburban area in July 1998 provided sufficient capacity to meet the increasing demand of passenger and air-cargo flows in Hong Kong in the foreseeable future. However, the move has adverse side effects such as causing the readjustment of many existing systems and creating many imminent strategic problems. One of such problems is the warehouse location of freight forwarders: they have to decide whether they should locate their warehouses in the new airport, in current locations, or in new locations somewhere in the city. This paper delineates the results of a survey conducted in the summer of 1997 before the airport was relocated. The survey asked what decisions the freight forwarders had made and how they evaluated some potential warehouse locations. The paper also considers two mathematical models, which explain and predict, respectively, the location pattern of freight forwarder warehouses before and after the relocation of the airport. 相似文献
142.
143.
由于忽视了环境外部性的存在,目前珠江三角洲地区的跨界污染问题很严重;通过空间计量经济模型实证,发现某地区的污染排放量不止和本地区的经济增长有关系,也受邻近城市经济发展水平的影响,珠三角的环境质量与经济增长在空间上表现出相互作用;最后给出了解决跨界环境问题的对策建议。 相似文献
144.
145.
改良剂修复重金属污染土壤及环境风险评价 总被引:1,自引:0,他引:1
高蓓蕾 《中国资源综合利用》2011,29(10):46-48
采用改良剂修复技术治理重金属污染土壤是一种有效的技术,土壤改良后的风险评估是一项重要内容。综述了改良剂修复重金属污染土壤后的环境风险评估方法和分析方法,并对今后的研究进行了展望。 相似文献
146.
生活垃圾焚烧炉渣湿法与干法处理工艺比较 总被引:2,自引:0,他引:2
通过对生活垃圾焚烧炉渣的湿法和干法处理的工艺路线、金属提取程度、环境影响和经济指标等方面的对比分析,得出湿法工艺的金属回收率及整体收益较高,但存在较为严重的污水与沉淀污泥污染问题,如需妥善解决,将大幅度提升炉渣的处理成本。目前国内干法工艺的收益低于湿法,却有效的避免了对环境的二次污染,成为炉渣处理的主要发展趋势。 相似文献
147.
The positive impact of air transport liberalisation as suggested by economic theories and empirical studies has inspired many developing countries like Nigeria to liberalise some of its Air Service Agreements (ASAs). This paper seeks to examine the extent to which international air service liberalisation has impacted upon Nigeria ten years after it was introduced. The research developed a cross-sectional model with passenger traffic as the dependent variable, while macroeconomic factors (trade and GDP), historical links, distance and ASAs (a proxy for liberalisation) served as independent or predictor variables. The analysis revealed a set of ASA stages in the country's policy-making process (restricted Bilateral Air Service Agreement, Open Skies Agreement and Yamoussoukro Declaration). Further analysis showed that the predictor variables were all significant in explaining passenger demand. The model demonstrated that the liberalisation of market access to the Open Skies Agreement level could stimulate traffic growth by at least 65 percent. The findings can assist in guiding policy and industry stakeholders in future decisions relating to liberalisation and ASAs. 相似文献
148.
Farshid Azadian Alper E. Murat Ratna Babu Chinnam 《Transportation Research Part E: Logistics and Transportation Review》2012,48(1):355-372
The route planning of time-sensitive air-cargo is becoming more important with the growing air-network congestion and delays. We consider a freight forwarder’s routing of a time-sensitive air-cargo in the presence of real-time and historical information regarding flight availability, departure delays and travel times. A departure delay estimation model is developed to account for real-time information inaccuracy. A novel Markov decision model is formulated and solved with online backward induction. Through synthetic experiments and case studies, we demonstrate that dynamic routing with real-time information can improve delivery reliability and reduce expected cost. 相似文献
149.
David Ervin JunJie Wu Madhu Khanna Cody Jones Teresa Wirkkala 《Business Strategy and the Environment》2013,22(6):390-409
This paper integrates two conceptual frameworks, utility maximization and institutional theory, to analyze voluntary corporate environmental management. The utility maximization or economic approach centers on motivations to decrease cost, increase revenue and improve manager utility. Institutional theory emphasizes how external pressures from market and non‐market constituents shape the firm's environmental efforts. We view the two frameworks as complementary and postulate a model that includes both types of influences. Survey data from six major industries consisting of a diverse set of facilities are used to estimate the effects of economic and institutional factors on a facility's use of environmental practices and pollution‐prevention activities. Our results support the hypothesized model, and show that cost barriers, management attitudes toward environmental stewardship, company ownership and external institutional forces, including competitiveness, investor and regulatory pressures, all affect a facility's environmental practices and pollution prevention activities. Findings suggest that a multifaceted policy strategy is needed to advance corporate environmental management across diverse firms. Copyright © 2012 John Wiley & Sons, Ltd and ERP Environment 相似文献
150.