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   538篇
  免费   36篇
  国内免费   10篇
财政金融   9篇
工业经济   36篇
计划管理   167篇
经济学   50篇
综合类   66篇
运输经济   11篇
旅游经济   34篇
贸易经济   145篇
农业经济   16篇
经济概况   50篇
  2024年   1篇
  2023年   4篇
  2022年   10篇
  2021年   11篇
  2020年   15篇
  2019年   10篇
  2018年   10篇
  2017年   14篇
  2016年   16篇
  2015年   15篇
  2014年   39篇
  2013年   73篇
  2012年   53篇
  2011年   72篇
  2010年   34篇
  2009年   34篇
  2008年   37篇
  2007年   30篇
  2006年   29篇
  2005年   24篇
  2004年   22篇
  2003年   12篇
  2002年   8篇
  2001年   6篇
  2000年   2篇
  1999年   3篇
排序方式: 共有584条查询结果,搜索用时 15 毫秒
101.
The COVID-19 pandemic has brought devastating impacts of an unprecedented scale to tourism-related businesses due to governments instituting mobility restrictions and business closures worldwide. In this research, we present the results of a survey involving 1212 tourism-related businesses in Jiangxi province, China, in late February 2020. The survey covered various topics, including (1) self-evaluated effects of COVID-19, (2) business responses, (3) social responsibility behavior, and (4) anticipated government policies. Findings from mixed-effects (ordered) logit models revealed that small-sized businesses appear particularly vulnerable to the pandemic. Social responsibility behavior is determined by business size, local pandemic circumstances, and local tourism dependence. Different businesses favor distinct government aid policies. Based on estimation results from our econometric models, we plotted a policy positioning matrix to identify appropriate policy measures for diverse businesses.  相似文献   
102.
张宝  王杰  杨涛 《物流技术》2020,(2):115-118
在RSSI算法的基础上,基于成本低、寿命长的多无源电子标签和单阅读器,结合Android开发板控制,提出一种新型室内定位方法,通过实验证明,该方法在标签布设区域能够实现定位功能,是一种可行的室内定位方法。  相似文献   
103.
This article demonstrates how large-scale tourist mobility data can be linked with network science approaches to better understand tourism destinations and their interactions. By analyzing a mobile positioning dataset that captures the nationality and movement patterns of foreign tourists to South Korea, we employ a few metrics to quantify the network properties of tourism destinations, aiming to reveal the collective dynamics of tourist movements and key differences across nationalities. According to the results, the number of inbound tourists to destinations follows a log-normal distribution, which indicates a notable heterogeneity of destination attractiveness. Although this finding holds across different nationalities, we find that tourists from different countries tended to visit different places in South Korea. A community detection algorithm partitions South Korea into several tourism regions, each covering a set of destinations that are closely connected by tourist flows. The implications for transportation development and regional tourism planning are discussed.  相似文献   
104.
This article discusses entrepreneurship in a depleted community in transition. The purpose is to develop knowledge about how discourses are used in the positioning of identity in regional development. The concept positioning illustrates how identities are provoked, challenged, negotiated and moved into identity positions that break away from the idea of imitating successful and wealthy regions; instead, locality, place and history emerge as important resources from where local actors obtain agency and recognize new opportunities. Ethnographic data of a single case were collected over a six-year period between 2005 and 2010. The longitudinal nature of the study made it possible to incorporate how local stakeholders took on new identity positions, while handling their inspiration as well as their frustration. Results show how rural change was conditioned by discourses and how entrepreneurship challenged and reframed dominating structures through interaction between entrepreneurship and community. Four discourses, expressed as dichotomies available to people in this depleted community, illustrate the interactive process of positioning: change vs. traditions, rational vs. irrational, spectacular vs. mundane and individual vs. collective. The results support research emphasizing perspectives that acknowledge interaction between entrepreneurship and context as well as discursive aspects of regional development.  相似文献   
105.
为了有效解决超市中出现的排队等待结账难、手推购物车不方便、寻找目标商品难等问题,设计了基于超高频率射频识别技术和超宽带室内定位技术,并辅以手机网页和云端大数据库完成的智能购物车系统,在车载自助结账系统、购物车智能跟随系统、云端大数据库自主导航系统3个方面做了突破。首先,顾客进入到超市之后,只需要扫码领取一辆智能购物车,然后便可以在手机上完成对购物车的操控,同时手机的网页也会实时显示顾客的购物信息,最后,顾客不再需要排队等待结账,只需要在手机网页上完成支付即可。设计结果表明,智能购物车可以有效解决超市中存在的问题,实现购物过程的全自助。设计方案可应用于智能超市,取代传统超市的人工结账和导购,可以有效缓解超市人员的工作压力。  相似文献   
106.
与导入社区银行时的期待相反,国内商业银行的社区银行战略并没有取得预期成效。本文对福州市区居民进行社区银行满意度问卷调查,分析了社区银行发展存在的问题,指出提供错时服务和便民服务等一系列差别化业务、加强人才储备、导入“互联网+社区银行”、明确市场定位是社区银行取得成功的关键。  相似文献   
107.
村镇银行设立的目的是为农村地区的"三农"提供金融服务,但其发展过程中市场定位出现了偏离,主要由于村镇银行的商业性质、市场准入、激励扶持和监管约束等制度的不健全所导致。鉴于此,应通过放宽市场准入制度、建立存款保险制度、加大政策扶持、完善政府监督、推进新型城镇化建设来矫正。  相似文献   
108.
何汉波  胡峰平 《价值工程》2014,(26):215-216
通过计算机技术对人员定位系统和指纹验证系统进行联网合并,利用指纹验证系统做到人卡合一,核实下井人员真实身份,最大限度的减少不经培训人员或弄虚作假的人员违规下井,确保矿井安全生产。  相似文献   
109.
油田开展的精细分层注水需要对注水井封隔器在井下各工况的位移进行磁定位测量。本文研究了磁定位测井原理,分析了磁定位校电缆、测井过程测量误差的影响因素,确定了系统性误差与随机性误差的组成。制定了封隔器在井下各工况相对于自由悬挂状态的位移的测试方案。该方案抵消了系统误差,将封隔器位移的误差范围控制在±0.15米以内。采用该方案测试了某井五个封隔器在不同工况下的位移。  相似文献   
110.
鲍万伟 《科技和产业》2022,22(9):308-313
为解决大直径超长钢管柱后插精准定位施工存在的问题,对钢管柱施工定位进行研究。通过采用全回转钻机安放钢套管,起钻进护壁和千斤顶回顶时的支撑作用。针对大直径钢管柱灌注桩身混凝土后插施工,采用在钢管柱中下部设置4个对称的液压千斤顶回顶护壁钢套管,并根据在柱顶实时超声波仪的偏差检测数据,进行定位协同测控调节,达到施工速度快、定位精度高、综合成本低的效果,形成相应的施工技术。  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