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   436篇
  免费   16篇
  国内免费   8篇
电工技术   5篇
综合类   80篇
化学工业   4篇
金属工艺   1篇
机械仪表   10篇
建筑科学   123篇
矿业工程   13篇
能源动力   33篇
轻工业   8篇
水利工程   5篇
石油天然气   6篇
无线电   33篇
一般工业技术   18篇
冶金工业   14篇
自动化技术   107篇
  2023年   4篇
  2022年   3篇
  2021年   13篇
  2020年   9篇
  2019年   5篇
  2018年   8篇
  2017年   6篇
  2016年   11篇
  2015年   16篇
  2014年   31篇
  2013年   40篇
  2012年   16篇
  2011年   33篇
  2010年   26篇
  2009年   31篇
  2008年   22篇
  2007年   20篇
  2006年   25篇
  2005年   27篇
  2004年   28篇
  2003年   22篇
  2002年   24篇
  2001年   8篇
  2000年   2篇
  1999年   5篇
  1998年   2篇
  1997年   2篇
  1996年   4篇
  1990年   1篇
  1989年   1篇
  1986年   3篇
  1985年   3篇
  1984年   2篇
  1983年   1篇
  1982年   1篇
  1980年   1篇
  1968年   2篇
  1966年   1篇
  1958年   1篇
排序方式: 共有460条查询结果,搜索用时 125 毫秒
451.
义乌在开发城市重点项目的同时,启动相关城中村的改造工程;对城中村实行就地、就近改造;改造后形成的新村中的业主,将他们的新房改作经营用房。通过这样的途径,新村从空间形态到经济运行迅速融入城市。义乌这种特点鲜明的城中村改造模式,从形成到成型、优化,经历了三个发辰盼段。  相似文献   
452.
技术性贸易壁垒与中国纺织业   总被引:3,自引:1,他引:2  
苏云霞 《棉纺织技术》2001,29(6):341-343
通过对技术性贸易规定的分析指出技术性贸易壁垒日益增多的原因,并对技术性贸易壁垒的主要表现形式进行了归纳,阐明了技术性贸易壁垒对我国纺织品出口会产生巨大的影响,从政府和企业两个角度提出了解决问题的对策建议。  相似文献   
453.
Max Dudler's buildings, conceived as apparently autonomous and self-referential objects, nonetheless demonstrate a reciprocal relationship with the city and have, over the past two decades, presented a consistent Rationalist approach. Born in 1949 in Switzerland, Max Dudler studied architecture in Frankfurt/Main and Berlin. From 1981 to 1986 he worked in the office of OM Ungers on the projects for the Frankfurt trade fair, and has run his own practice, with offices in Berlin, Frankfurt and Zurich, since 1992. Copyright © 2007 John Wiley & Sons, Ltd.  相似文献   
454.
在政府行为下,强强联合集团公司在发展中命运各异。怎样管理才能保证联合之后充分发挥联合集团的优势,提高自身的竞争力,得到迅速发展,是当前我国合并面临的一个重要问题;一些集团提出“集权”管理的需要,这与国际流行的集团公司管理模式以及理论观点都有明显的不同。  相似文献   
455.
经营企业的非合理政府成本阻碍了民营企业的发展。我国要减少与消除民营企业的非合理政府成本,应该规范政府与民营企业行为,建立新型的政企关系,大力发展民营企业行业组织。  相似文献   
456.
刘高峰 《世界电信》2005,18(1):30-34
电信业“十一五”规划是国家信息产业总体发展规划的重要组成部分,是信息产业总体发展规划在电信领域的延伸和细化,通信业“十一五”规划重点研究内容需要把握产业协调发展、行业发展模式、行业监管环境、新技术应用、普遍服务和走出去等六方面的问题。可以预见今后几年,我国电信产业将呈现电信产业逐步走向综合信息服务业;IP电话对传统长话、移动对固话的分流还将加剧;农村将成为我国电信业务市场发展的一个主要增长点;三网融合进程加快等发展趋势。  相似文献   
457.
While texts are the primary carriers of information for government decision making, few studies have examined the role of textual complexity in government-citizen communication. Using a variety of natural language processing methods, this paper measured textual complexity from the perspectives of word complexity, logical complexity, and abnormal negative emotion based on the textual data of the 1.15 million online messages left by the citizens to government leaders on China’s online public service platform, and explored its impact on government responses. Based on the Double-hurdle model, this paper found that the government response can be composed of two decision-making processes: response-intention, which indicates whether to respond, and response-level, which represents the extent of response. For response-intention decision-making, the simpler the words and logic of the message, the more likely it is to receive a reply from the government. For response-level decision-making, messages with more complex words and logic received a higher level of government response. Abnormal negative emotion in the message significantly reduced the government’s response intention and response level, and the negative effect of abnormal negative emotion on response intention was much greater than on the response level. This study not only helps to understand how the government makes decisions based on textual information, but also has important value for responsive government construction and equalization of government services.  相似文献   
458.
Social media speeds up government information transmission between government agencies and citizens. Drawing on Elaboration Likelihood Model and Cognitive Fit Theory, we use cSEM package of R to examine how central information structure, peripheral information structure and information style influence the diffusion of government microblogs. We also explore how information topic moderates the main effects above. Analyzing data (n = 15,151) collected from six local government microblog accounts in China, we find that central information structure, peripheral information structure and information style indeed influences the diffusion of government microblogs. More importantly, our results show that government information topic (people’s livelihood - vs non-livelihood) plays a significant moderating role in the diffusion of government microblogs. The findings contribute significant and intriguing insights to the research and practice in government information dissemination.  相似文献   
459.
环境安全规划设计无疑是舒缓城市治 安管理压力的有效途径,然而我国城市建设对 安全规划设计的关注较少。通过对国际基于政 府犯罪预防策略主导的社区环境安全规划设计 经验的剖析,提炼不同国家应用安全规划策略 的共性特点。从犯罪预防法规政策、国家预防 犯罪委员会的统筹作用、城市规划部门职能、公 众参与设计4个方面,梳理并介绍北美、英国、 北欧、东亚等多个国家和地区环境安全规划设 计实践的经验,以期为我国城市规划设计预防 犯罪工作提供有益参考借鉴。针对我国层级式 公共安全管理的效能衰减和损耗问题,本研究 拟从制定多层级的犯罪预防法规政策、建立国 家预防犯罪委员会、确定城市规划部门的预防 犯罪职能、提倡多方合作和公众参与4个方面, 总结国际经验对我国环境安全规划设计实践的 有益启示和借鉴。  相似文献   
460.
In the recent world of catastrophe, scholars and policymakers have empirically examined the influence of various economic and financial instruments on environmental quality. Still, the literature is limited in terms of displaying the factors affecting public health, particularly in case of China. This study aims is to examine the nexus between green electricity, government efficiency, and health issues to draw novel policies. The current study investigates role of electricity production, eco-innovation and institutional factors for overall public health in China using the data from 2000Q1-2021Q4, which is a novel contribution to the existing literature. For empirical analysis, the study employs cointegration analysis, quantile regression and fully modified ordinary least square methods. The empirical result found the validity of the long-run equilibrium relationship. However, the asymmetric distribution of all variables allows this study to use a non-parametric “quantile regression” approach. The empirics depicts that economic growth and renewable electricity production positively influence public health–increase health-related issues. On the contrary, eco-innovation and government effectiveness substantially reduces public health issues. The empirical results are authenticated by the applying three parametric approaches – fully modified ordinary least square, canonical cointegration regression, and dynamic ordinary least square. To explore the causal connection between the variables, this study uses granger causality test – validates the presence of unidirectional and bidirectional causalities between variables. This study suggests enhancement in government effectiveness, expenditure, and eco-innovation to reduce critical health issues in the country.  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