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   5380篇
  免费   208篇
  国内免费   31篇
财政金融   137篇
工业经济   381篇
计划管理   1511篇
经济学   413篇
综合类   344篇
运输经济   112篇
旅游经济   151篇
贸易经济   1187篇
农业经济   1002篇
经济概况   381篇
  2024年   21篇
  2023年   87篇
  2022年   143篇
  2021年   252篇
  2020年   228篇
  2019年   143篇
  2018年   148篇
  2017年   224篇
  2016年   255篇
  2015年   168篇
  2014年   447篇
  2013年   713篇
  2012年   432篇
  2011年   502篇
  2010年   385篇
  2009年   324篇
  2008年   253篇
  2007年   211篇
  2006年   182篇
  2005年   135篇
  2004年   87篇
  2003年   69篇
  2002年   57篇
  2001年   44篇
  2000年   24篇
  1999年   19篇
  1998年   19篇
  1997年   10篇
  1996年   5篇
  1995年   7篇
  1994年   5篇
  1993年   2篇
  1992年   2篇
  1990年   1篇
  1988年   1篇
  1985年   1篇
  1984年   4篇
  1983年   7篇
  1982年   1篇
  1981年   1篇
排序方式: 共有5619条查询结果,搜索用时 46 毫秒
61.
地球资源与资源安全战略   总被引:1,自引:0,他引:1  
介绍了地球资源目前存在的主要问题,特别是矿产资源、土地资源、水资源面临的严峻形势,提出了一些确实可行的资源安全战略。  相似文献   
62.
Internet上蕴藏着丰富的食品信息资源,本文详细介绍了利用搜索引擎、各种数据库、专业网站以及学科导航系统等工具检索食品科技电子文献信息的途径和方法。  相似文献   
63.
章阐述了建筑施工企业建立施工现场安全生产和明施工保证体系的需要和条件。论述了体系的指导思想、原则和基本构架,管理要素与运行功能以及相应的职责权限,以及体系及其运行机制的有效运行和进一步完善的四项工作重点。  相似文献   
64.
In most developing countries of the world, large scale public food procurement and distribution systems (PFDS) have become too expensive for the country governments to support from their own resources. Despite high financial and administrative costs of the programs, the degree of seasonal price stabilization and price support achieved through the activities remain quite low. Using the Bangladesh PFDS as a case study, this research indicates that considerable improvements in price support can be achieved by providing credit to the farmers immediately after the harvest. If the government procurement is reduced by 50 per cent in Bangladesh, and providing 150 per cent of the cost of running PFDS as credit, Bangladesh can improve the farmers' income and achieve better stability of cereal prices at a cost less than one-third of the current costs of the PFDS.  相似文献   
65.
存款保险法律制度利弊之研究   总被引:7,自引:0,他引:7  
存款保险法律制度是直接针对银行挤兑和破产倒闭而设计的,目的在于保护存款人的利益,增强公众对银行体系的信心,减少挤兑的可能性。我国建立该制度,将有利于维护金融安全,营造公平竞争的市场环境,完善银行的退出机制,从而提高金融业的效率。  相似文献   
66.
QHSE管理体系是质量、健康、安全、环境为一体的管理模式。该管理体系的建立使企业内的职责和权限更明确、清晰.为企业节省了大量的审核时间及审核经费,为企业带来了经济效益。结合企业管理现状,通过对管理体系的具体分析.提出企业实施QHSE管理体系的几点建议。  相似文献   
67.
重油催化裂化装置安全评价   总被引:4,自引:0,他引:4  
运用道化学公司火灾、爆炸危险指数评价方法对广州石化重油催化裂化装置进行安全评价,定量地认识该装置的危险性,提出安全建议。  相似文献   
68.
To support organisations in addressing their safety culture, practical tools have been developed worldwide. Based on such practical tools, it is possible to measure where an organisation is situated regarding its safety culture in order to identify priority areas, formulate appropriate improvement strategies and determine changes over time. In this paper, it is examined which practical tools to measure and improve safety culture are provided on the Belgian market. In total, 15 Belgian tools were identified, of which 8 agreed to cooperate. Amongst the included tools, there is a lot of variation regarding the methods to diagnose the safety culture and the overall procedure to improve the safety culture. The importance to adapt the tool to the specific needs and context of organisations is acknowledged in most of the tools, as well as the importance to use a multi-method approach to measure the safety culture. Also, it is recognised that all hierarchic levels should participate during the process of diagnosing the safety culture. A point of attention is this overall participation during the validation of the results of the diagnosis, and the priority setting of the recommendations, which is mainly done by the higher management. The development of the Belgian tools is based on experience with a focus on direct practical application, which leads to the fact that none of the tools are validated through scientific evidence. Another point of attention is that organisations pay too little attention at the continuity of safety culture research. And finally, the question can be raised if the safety culture tools actually address the concept ‘safety culture’, or if they address only a subset of the concept. When safety culture is addressed, a comprehensive approach should be used, where technological, organisational, human and external aspects are taken into account as interacting and interrelating elements.  相似文献   
69.
Reducing injury and death in house fires is an important public health intervention activity with the presence of an operating smoke alarm widely considered an important way of reducing harm from fire. Yet despite a number of initiatives and fire-safety campaigns, a number of households at greater risk of domestic fire fail to have a functioning alarm. This paper provides empirical insight into everyday experiences of owning, maintaining and testing smoke alarms among a purposive sample of individuals identified as being less likely to own a functioning smoke alarm. Analysis from focus group data identifies a number of reasons why individuals may not own or test an alarm, and provides new insight into how fire risk is understood in the context of a range of competing, and potentially more prominent, individual and household risks. We suggest that while initiatives that aim to reduce fire injury and death should be continued, their success, and indeed future research on fire risk, should pay attention to the mundane and everyday contexts within which individuals currently rarely reflect on their risk of experiencing a domestic fire.  相似文献   
70.
At the beginning of the 21st century, the Netherlands and Flanders introduced a risk-based approach to flood risk management (FRM), labelled as multi-layer (water) safety. In contrast to a flood defence approach, risk-based management stresses the need to manage both the consequences and probability of a flood. The concept has developed differently in the two countries, as we conclude from a discursive-institutionalist research perspective. The Netherlands is characterised by a high institutionalization of the traditional flood defence discourse and a more closed policy arrangement, whereas in Flanders, the flood defence discourse is less institutionalized and the arrangement is more open. In both countries we see an opening of the arrangement preceding the establishment of multi-layer (water) safety, but at the same time, actors stress different aspects of the concept in order to increase its compatibility with the existing policy arrangement. In the Netherlands, the focus is on probability management, in Flanders on consequence management. In the Netherlands, multi-layer (water) safety as a concept could be established because it stabilises the system in the short-term by reinforcing the importance of flood defence, whereas in Flanders, policymakers were receptive to the concept because it supports a shift of responsibility towards actors outside traditional water management.  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