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   123篇
  免费   12篇
  国内免费   2篇
财政金融   8篇
工业经济   4篇
计划管理   33篇
经济学   29篇
综合类   14篇
运输经济   5篇
旅游经济   9篇
贸易经济   11篇
农业经济   10篇
经济概况   14篇
  2023年   4篇
  2021年   1篇
  2020年   5篇
  2019年   1篇
  2018年   2篇
  2017年   7篇
  2016年   3篇
  2015年   9篇
  2014年   11篇
  2013年   19篇
  2012年   4篇
  2011年   10篇
  2010年   12篇
  2009年   6篇
  2008年   11篇
  2007年   5篇
  2006年   10篇
  2005年   6篇
  2004年   2篇
  2003年   4篇
  2002年   2篇
  2001年   1篇
  1999年   1篇
  1991年   1篇
排序方式: 共有137条查询结果,搜索用时 15 毫秒
131.
It is believed that films and television dramas that are not directly concerned with tourism promotion have become a catalyst for tourism as publicity and promotional media for attracting tourists. This paper considers what roles films and television dramas play in influencing overseas tourists' behaviors in terms of their travel destination selection. The results from the survey of Japanese tourists to the UK gave evidence of a wide range of roles of films and television drams as different stages in respondents' destination choice processes. This paper concludes that films and television dramas have an ability to create destination awareness, consciousness, and images leading to a stronger interest in the destination and actual travel to the destination.  相似文献   
132.
目的对药物流产术与无痛人流术终止早期妊娠的临床效果进行对比和研究。方法选取我院要求人工终止早期妊娠的妇女共122例,将患者随机分为药流组和人流组,药流组采用传统的药物米索前列醇和米非司酮片进行药物流产;人流组则采用芬太尼和丙泊酚行静脉注射进行麻醉,实施无痛人工流产。对两组患者的腹部疼痛持续时间、流血持续时间及再次清宫的概率进行比较。结果人流组患者腹部持续疼痛时间与流血时间均比药流组短,药流组需要再次清宫的概率高于人流组。结论无痛人流术的临床效果优于药物流产术,且镇痛效果好、流血时间短、再次清宫的概率也比较低。  相似文献   
133.
盗伐是每个林业企业都要面对的最主要的人为风险。它不仅给林业企业带来损失,也会使森林局部林相遭到破坏,影响附近林木正常生长。尽可能减少盗伐发生,是林业企业的工作任务之一。评价盗伐风险,分析盗伐诱发机制,并针对诱发机制提出相应防范措施,可为减少盗伐发生提供政策参考。  相似文献   
134.
农民享有的用路权、用水权、用电权、通讯权、上网权与市民一样,是农村网络城市化理论的核心内容,其理论基础是“小农理性命题”和“诱致性制度变迁理论”。广西都安的实证分析支持此命题——农村网络城市化理论是解决“三农”问题的根本。  相似文献   
135.
大花萱草的组织培养   总被引:7,自引:0,他引:7  
通过采取大花萱草5个品种的花茎、花瓣做为外植体,接种在相同的培养基上诱导分化、继代培养和生根培养。结果表明不同品种大花萱草存在很大的差异,而同一品种的不同部位其愈伤组织的诱导率也不相同,花茎优于花瓣。说明大花萱草的组织培养应用品种而异,针对不同的品取不同的培养基及适当的激素浓度。  相似文献   
136.
By proxying ‘awe culture’ (i.e., reverence for life and ethical behaviour) with regional induced abortion rates, we examine the impact of awe culture on corporate social responsibility (CSR) in a sample of Chinese firms. We find that firms located in areas with higher induced abortion rates spend less funds on CSR activities and obtain lower CSR scores. The findings remain intact after an array of robustness tests. Further analysis shows that the effect of awe culture on CSR is more pronounced in areas with weaker law enforcement and where the local government emphasises economic growth targets. However, the effect becomes insignificant when firms are well-represented by top executives with overseas experience, foreign directors, and a high proportion of female board members. The significance of the effect also diminishes for non-state-owned firms, and firms with higher institutional ownership and higher cash holdings. Moreover, the lack of awe culture attenuates the positive impact of CSR on firm value. Overall, we document that awe culture, as an informal institution, shapes CSR behaviours.  相似文献   
137.
Using historical data for the 1700–1914 period, this paper analyses the nature and direction of technical change in Britain. The evidence in this paper indicates that, over this long period, labour-saving technology adoption was a major response to changes in relative factor prices, thus supporting the hypothesis that ‘induced innovation’ was a major driver of technical change during the British industrial revolution. Labour saving was made possible and sustained by capital-augmenting and energy-augmenting technical change coupled with continuous capital accumulation and abundant energy supplies. This process placed the British economy on a higher capital–labour ratio equilibrium, and was the primary force driving sustained productivity growth, which further raised wages and living standards.  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