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   41523篇
  免费   2683篇
  国内免费   61篇
财政金融   3320篇
工业经济   1943篇
计划管理   10331篇
经济学   7044篇
综合类   6801篇
运输经济   346篇
旅游经济   752篇
贸易经济   4973篇
农业经济   3284篇
经济概况   5473篇
  2024年   9篇
  2023年   497篇
  2022年   700篇
  2021年   1200篇
  2020年   1455篇
  2019年   814篇
  2018年   716篇
  2017年   818篇
  2016年   977篇
  2015年   1184篇
  2014年   3177篇
  2013年   3444篇
  2012年   3784篇
  2011年   4643篇
  2010年   3428篇
  2009年   2825篇
  2008年   2815篇
  2007年   2367篇
  2006年   2259篇
  2005年   1670篇
  2004年   1193篇
  2003年   1044篇
  2002年   747篇
  2001年   738篇
  2000年   499篇
  1999年   297篇
  1998年   142篇
  1997年   119篇
  1996年   104篇
  1995年   81篇
  1994年   62篇
  1993年   59篇
  1992年   52篇
  1991年   45篇
  1990年   28篇
  1989年   17篇
  1988年   23篇
  1987年   4篇
  1986年   3篇
  1985年   40篇
  1984年   62篇
  1983年   44篇
  1982年   35篇
  1981年   13篇
  1980年   14篇
  1979年   11篇
  1978年   2篇
  1977年   6篇
  1973年   1篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
Franchising has rapidly grown in Saudi Arabia since 2005, yet a small number of the large companies dominate the market with mostly foreign brands. Therefore, the aim of this study is to investigate the barriers that Saudi small and medium enterprises and startups face when striving to become franchisors or franchisees. These barriers are investigated through the use of semi-structured interviews with people who belong to the franchise community either as administrators, franchise committee members, franchise developers, franchisees–franchisors, or prospective franchisees and franchisors. The results of this study show that there are several barriers standing against using franchising as a mode of expansion and investment by small and medium enterprises and startups, such as lack of legal, financial, institutional, marketing, development, and educational services support, and other key factors related to international franchisors' preferences and domestic franchising.  相似文献   
2.
Between 2001 and 2005, the US airline industry faced financial turmoil while the European airline industry entered a period of substantive deregulation. Consequently, this opened up opportunities for low-cost carriers to become more competitive in the market. To assess airline performance and identify the sources of efficiency in the immediate aftermath of these events, we employ a bootstrap data envelopment analysis truncated regression approach. The results suggest that at the time the mainstream airlines needed to significantly reorganize and rescale their operations to remain competitive. In the second-stage analysis, the results indicate that private ownership, status as a low-cost carrier, and improvements in weight load contributed to better organizational efficiency.  相似文献   
3.
Despite the explosive growth of the Chinese aviation sector and the major industry reforms undertaken in recent decades, the Chinese domestic market remains highly concentrated with a significant element of regulation and governmental control in areas such as market entry and airline fleet planning. In this study, we investigate the frequency strategies and aircraft choices of airlines operating in this concentrated growth market. Our empirical investigation suggests that airlines mainly accommodate rapid traffic growth by flying more frequently, although increased aircraft size also contributes to market expansion. We also find a negative relationship between market concentration and flight frequency. Due to the more balanced market structure resulting from mergers among leading airlines since 2002, there has been a moderate reduction in market concentration at route level, contributing to a 3.7% increase in traffic volume from 2002 to 2008. The results of our study suggest that Chinese travelers have yet to fully enjoy the benefits of market liberalization, and airports should prioritize increasing capacity related to aircraft movements over the accommodation of larger aircraft.  相似文献   
4.
安徽省在实现城乡公共文化服务均等化中已取得一定成绩,但还存在发展观念偏差,资金来源等方面非均等化问题。因此,必须转变发展观念,积极发展农村公共文化服务;丰富资金来源,为城乡公共文化服务均等化提供物质载体;加强公共文化服务基础设施建设,缩小城乡差距;以城带乡,实现城乡公共文化服务人才队伍均等化;加强城乡公共文化交流,奉献农民喜闻乐见的文化产品。  相似文献   
5.
为了探索适合高职学生学习特点的教学方法,提高教学质量,本文就研学结合教学理念的内涵、实施路径、特征和目的进行了探索和研究,并在微观经济学课程中进行试验。结果显示教学效果良好,教学质量得到提升,学生的学习兴趣得以提高,主动参与的积极性增加,培养了学生分析问题和解决问题的能力,为专业训练和实践打好基础。论文最后就研学结合教学理念在微观经济学课程实施中存在的问题进行了剖析,并提出了进一步探索和努力地方向。  相似文献   
6.
高校设置总会计师适应高校经费收支多元化、复杂化现实,是回应有关制度要求的实践选择.新时期,我国高校组织特性呈现出新的变化,高校领导班子能力建设尝试新的实践探索.高校设置总会计师能够呼应这些新变化的需要,从而促进财务管理工作的科学化、专业化、精细化发展走向,提高管理的质量与效率.因此,高校设置总会计师可以从总会计师的职责权限、制度建设、任免方式及监管体系等方面统筹考虑.  相似文献   
7.
8.
This paper assesses to what extent differences in the characteristics of individuals (micro‐level perspective) and country‐specific factors (macro‐level perspective) can explain country differences with respect to material deprivation levels. Thus, our work aims to simultaneously consider the macro dimension and the predominantly individually‐oriented study field of material deprivation using multilevel techniques. We make use of the European Union Statistics on Income and Living Conditions. Our results show that country‐specific factors seem to be much more relevant than individual effects in explaining country differences in material deprivation. We estimate that the introduction of country‐specific factors reduces the proportion of total variance due to between‐country differences in deprivation by 72.7 percent, while individual‐level variables reduce this proportion by only 9.4 percent. We also show, through interaction variables, that the effect of sociodemographic characteristics can be shaped by institutional and structural factors, especially by the level of GDP.  相似文献   
9.
Integrating car parking facilities with public transport in Park and Ride (P&R) facilities has the potential to shorten car trips, contributing to more sustainable mobility. There is an ongoing debate about the actual effects of P&R on the transport system at the subregional level. A key issue is the relative attractiveness of city centre car parks (CCCP), P&R and public transport. The paper presents the findings of a comparative empirical case-study based on a field survey of CCCP and P&R users conducted in the city of Bath, UK. Spatial and statistical analyses are applied. Radial distance to parking, availability of P&R sites in the direction of travel, gender, age, income and party-size are found to be important factors in a binary logistic regression model, explaining the revealed-preference of parking type. Stated analysis of foregone parking alternatives suggests more use of public transport and walking/cycling would likely occur without first-best parking alternatives. The policy implications and possible planning alternatives to P&R at the urban fringes for achieving greater sustainability goals are also discussed.  相似文献   
10.
This study presents a mathematical model that designs a reliable multi-modal transportation network for a biofuel supply chain system, where intermodal hubs are subject to site-dependent probabilistic disruptions. The disruption probabilities of intermodal hubs are estimated by using a probabilistic model which is developed using real world data. We developed an accelerated Benders decomposition algorithm to solve this challenging NP-hard problem. Numerical analysis show that the model selects to use intermodal hubs located in areas with low disruption probabilities. In case of a disaster, the reliable solution results in 6.21% savings over the minimum cost solution.  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