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   2194篇
  免费   172篇
  国内免费   28篇
财政金融   74篇
工业经济   87篇
计划管理   655篇
经济学   466篇
综合类   238篇
运输经济   25篇
旅游经济   54篇
贸易经济   263篇
农业经济   340篇
经济概况   192篇
  2024年   18篇
  2023年   58篇
  2022年   90篇
  2021年   77篇
  2020年   144篇
  2019年   85篇
  2018年   74篇
  2017年   56篇
  2016年   52篇
  2015年   65篇
  2014年   142篇
  2013年   160篇
  2012年   209篇
  2011年   251篇
  2010年   168篇
  2009年   136篇
  2008年   127篇
  2007年   103篇
  2006年   98篇
  2005年   72篇
  2004年   48篇
  2003年   35篇
  2002年   21篇
  2001年   26篇
  2000年   10篇
  1999年   9篇
  1998年   8篇
  1997年   7篇
  1996年   11篇
  1995年   8篇
  1994年   4篇
  1993年   3篇
  1992年   1篇
  1991年   2篇
  1990年   1篇
  1989年   2篇
  1988年   1篇
  1987年   1篇
  1986年   2篇
  1984年   2篇
  1982年   7篇
排序方式: 共有2394条查询结果,搜索用时 15 毫秒
121.
通过对井道封闭性与电梯运行中开放过程的分析,提出实现电梯安全使用的必要措施及检验中应关注的焦点。  相似文献   
122.
市域城镇体系空间布局研究——以河南平顶山为例   总被引:1,自引:0,他引:1  
城镇体系的空间结构研究是人文地理学研究的重要方向。城镇体系的空间结构是否合理,对区域经济的发展有一定作用。文章采用定性分析与定量分析相结合的研究方法,对平顶山市域城镇体系规模等级、地域空间结构、市域经济发展水平等现状进行分析,通过运用断裂点公式对平顶山市域中心城市辐射影响范围进行定量计算,剖析平顶山市域城镇体系存在如下问题:城镇体系人口规模等级差异大,城镇化率基础好于全省平均水平,城镇化水平发展不平衡,城镇体系空间结构状态非均衡等。根据研究区域情况,对平顶山市域城镇体系进行布局构想,即打造叶平宝鲁一体化核心区为引领,加强3个卫星城市的发展为带动,做好小城镇的生态建设,完善市域交通网络建设,推进产业集聚区的建设,建立起一个等级清晰、核心突出、职能明确的"一心三卫三层"网络型城镇体系。  相似文献   
123.
With increasing global competition in service sectors, innovative technologies have radically changed the tourism industry, and to be successful innovative products/services must have clear, significant points of difference that are related to needs in the market place. Furthermore, changes in consumer perceptions that emanate from an innovation are central to its effective product and service design. Although for most of us space travel is still a faraway dream, it is in fact a future probability that will increasingly attract travellers who seek new vacation experiences, and as a result, sustain academic interest. Thus, in initiating space tourism for the purposes of recreation, leisure and knowledge enhancement, a preliminary estimation of potential global demand characteristics that are specific to consumer innovators for space travel needs to be undertaken prior to promotion of research and development. In this context, this paper investigates both consumer attitudes towards space travel by analysing the components of motivated consumer innovativeness and the interest that potential consumers have in developing space tourism technology innovations within Taiwan. Consumer innovativeness is complex and comprised four innovativeness types, namely, social, functional, hedonic and cognitive. As product/service innovation development has been relatively unexplored in the mature industry of tourism, many business managers would welcome an understanding of which vacation travellers are most likely to be the earliest buyers of such an exciting new product. With data collected from a sample of 354 Taiwanese, this research uses mediated regression to examine the influence of the four types of consumer innovativeness on consumer's attitudes and acceptance of a space tourism technology innovation, and the mediating role perceived novelty plays in the relationship. The findings indicate that only hedonic and social innovativeness are associated with improved consumer attitude and that novelty partially mediates the relationship for those two types of consumer innovativeness. The implications for theory and practice are discussed. Limitations and directions for future research are also addressed.  相似文献   
124.
文化旅游的空间形态研究——基于文化空间的综述与启示   总被引:3,自引:1,他引:2  
文化空间是一个多尺度的概念,现有研究分析了文化空间的哲学意义,并将其界定为非物质文化遗产的专有属性,而地理学视角的文化区探讨为文化空间的研究提供了重要补充。基于文化空间的研究体系,文章综述了文化旅游的研究概况,从物质维度、时间维度和区域维度的三重视角,分资源利用、整合路径和评价指标三个方面,构建了文化旅游空间形态的分析框架,并据此提出了文化旅游研究存在的不足和研究趋向。  相似文献   
125.
孙海  古辉 《民营科技》2011,(6):120-121
随着数字印刷的发展,色彩管理变得越来越重要。在此研究了色彩管理的流程,探讨了色彩管理在实践中的具体应用,并阐述了色彩管理在印刷过程中的重要性。  相似文献   
126.
127.
研究双圆盘Hardy空间子模间的重相似等价,并进一步得到两子模重相似等价的充要条件.  相似文献   
128.
129.
Discussions on social movements in Asian cities are inseparable from the abundance of public rallies in the region. In this article, I look at the case of Thamrin‐Sudirman, the main thoroughfare in Jakarta, Indonesia, to uncover how physical urban spaces constituting part of the city as living systems broaden the reach of social movements' agendas. The study involved continuous observation at rallies, interviews with social movement leaders and participants, and a look at simultaneous public rallies in various cities. This article analyzes the sites of public rallies as ‘megaphones’, based on the patterns of issues featured in the rallies, the groups participating, and the nodes and paths that they constructed. Two key dimensions of the megaphone are: (1) the symbolic and historical significance of the sites of rallies; (2) the relationship between the space and the media. Particular sites in cities become places where information is gathered, distributed and transferred through the media, facilitating a network among cities. This article concludes that cities are agents of political actions that amplify ideas and spread them across the globe. The urban centers' megaphonic function results from the synergy between the public space in the built environment and the public sphere, and is reflective of the recentering of the city.  相似文献   
130.
Abstract

Edenton, North Carolina is one of the oldest communities in the Southeastern United States. A decision needed to be made about usage for a publicly-owned, non-historic building on some prime real estate that was located on the edge of the Albemarle Sound and in the city's historic district. An advisory panel of experts was assembled. The panel was given background on the city and the building in question and then taken on an extensive tour of the area, including the building. The panel was then asked a series of questions in a public forum. Their answers were compiled and a qualitative factor analysis was performed on their question-replies. A number of directions were suggested including turning the building into a meeting center, a museum, and a support building for an existing public dock for tourist boats. The results of this process are presented in this paper.  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