全文获取类型
收费全文 | 39300篇 |
免费 | 1128篇 |
国内免费 | 755篇 |
专业分类
财政金融 | 2935篇 |
工业经济 | 2405篇 |
计划管理 | 13302篇 |
经济学 | 4333篇 |
综合类 | 5291篇 |
运输经济 | 450篇 |
旅游经济 | 870篇 |
贸易经济 | 4894篇 |
农业经济 | 3006篇 |
经济概况 | 3696篇 |
信息产业经济 | 1篇 |
出版年
2024年 | 53篇 |
2023年 | 324篇 |
2022年 | 415篇 |
2021年 | 889篇 |
2020年 | 975篇 |
2019年 | 621篇 |
2018年 | 584篇 |
2017年 | 731篇 |
2016年 | 742篇 |
2015年 | 1036篇 |
2014年 | 2922篇 |
2013年 | 3443篇 |
2012年 | 3288篇 |
2011年 | 4225篇 |
2010年 | 3234篇 |
2009年 | 2547篇 |
2008年 | 2932篇 |
2007年 | 2653篇 |
2006年 | 2654篇 |
2005年 | 2012篇 |
2004年 | 1467篇 |
2003年 | 1098篇 |
2002年 | 673篇 |
2001年 | 559篇 |
2000年 | 397篇 |
1999年 | 222篇 |
1998年 | 116篇 |
1997年 | 81篇 |
1996年 | 75篇 |
1995年 | 41篇 |
1994年 | 30篇 |
1993年 | 27篇 |
1992年 | 15篇 |
1991年 | 24篇 |
1990年 | 9篇 |
1989年 | 10篇 |
1988年 | 13篇 |
1987年 | 3篇 |
1986年 | 1篇 |
1985年 | 9篇 |
1984年 | 10篇 |
1983年 | 11篇 |
1982年 | 4篇 |
1981年 | 1篇 |
1980年 | 5篇 |
1979年 | 1篇 |
1978年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 531 毫秒
971.
Problems in agriculture and land use are increasingly recognised as complex, uncertain, operating at multiple levels (field to global value chains) and involving social, economic, institutional, and technological change. This has implications for how projects navigate complexity to achieve impact. However, few studies have systematically evaluated how project actors engage with other actors to configure capabilities and resources across multiple levels in agricultural innovation systems (AIS), from the individual to the network, to mobilise and build systemic innovation capacity. An analytical framework conceptualising the nested configuration of capabilities at multiple levels in the AIS is applied to two projects that successfully tackled agricultural and land management problems of differing complexity: (i) improving lamb survival; and (ii) sustainable land management in New Zealand. Findings indicate that innovation capacity constitutes project actors interacting with other AIS actors to configure capabilities and resources at different levels of the AIS in order to leverage positive project path dependencies and break path dependencies that are created by existing and historical capability configurations. Project actors also balance exploiting existing innovation capabilities, as well as using adaptive capability for exploring and creating new capability configurations to respond to emerging circumstances. This implies that projects should have strategic ambidexterity in terms of how they combine exploiting existing and exploring new networks to access, combine, create, or disconnect certain capabilities to address ‘capability voids’ in AIS. This requires support to projects to constantly scrutinise, through reflexive monitoring by dedicated facilitators, specific agriculture and land use policies connected to major sustainable development models (e.g. climate smart agriculture, urban farming, smart farming). The can help assess whether the AIS provides the right mix of capabilities and whether this is adequately supported by innovation policy, to realize transformative policy objectives. 相似文献
972.
宋歌 《无锡商业职业技术学院学报》2014,14(5):110-112
在非时政类报刊陆续走向市场的大环境下,行业报刊的市场化势在必行。行业报刊的市场化经营,必须建立一支既懂行业报刊新闻业务,更懂行业报刊经营管理的人才队伍;必须建立与行业报刊市场化相适应的运作机制;必须注重实施行业报刊产业链发展战略。 相似文献
973.
A yard template determines the assignment of spaces in a yard for arriving vessels. Fluctuation of demand for freight transportation brings new challenges for making a robust yard template when facing uncertain maritime market. A model is proposed for yard template planning considering random numbers of containers that will be loaded onto vessels that visit the port periodically. Traffic congestions and multiple schedule cycle times for vessel arrival patterns are also considered. Moreover, a meta-heuristic method is developed for solving the model in large-scale cases. Numerical experiments are conducted to validate effectiveness and efficiency of the model. 相似文献
974.
Once heralded by both liberals and socialists as a tool for Dutch municipal governments to prevent land speculation and to implement spatial policies, a century later the Dutch ground lease (erfpacht) is now despised by many. The ground lease was the subject of strong debate in the recent past and is likely to remain so. It has been argued that lessees should have the right to become owner of the land, and this ‘right to buy’ has indeed been implemented in the land policies of several municipalities. The Dutch urban ground lease seems to be under serious pressure. Is it outdated or is it still a valuable tool for land policy? Before we answer this question, we firstly will provide an historical overview of Dutch ground lease. Secondly, the different types of ground lease will be elaborated. Thirdly, the focus will be on the urban ground lease used by Dutch municipalities and the developments in the use of this instrument. Fourthly, the recent policy changes will be dealt with, followed by an assessment. 相似文献
975.
Beatriz Junquera Jesús Ángel del Brío 《Technology Analysis & Strategic Management》2017,29(10):1139-1152
This paper aims to thoroughly look into the effects of the differences between the diverse leadership styles on innovative outputs (intensive, efficient and eco-efficient) in Spanish industrial companies. A questionnaire for the factories was sent and was received between the months of September 2013 and June 2014. A total of 142 valid questionnaires were received. Several regression models were used in the empirical analysis. The results show that charismatic leadership positively induces an intensive innovative output, at the same time as it improves firms’ eco-efficient innovative output. Likewise, the individualised consideration that characterises transformational leadership makes this leadership style produce positive results on the whole group of innovative outputs considered. At the other end of the leadership spectrum, the transactional style causes negative effects on the relationship between innovative activity and innovative outputs, and more specifically, on the efficient innovative output. 相似文献
976.
近年来,随着网络技术的飞速发展和移动互联工具在大学生中的迅速普及,"无网不在"、"每日必网"迅速成为90后大学生基本的生活方式,学生管理工作受到更加严峻的挑战。本文通过对自媒体平台工具差异化比较研究,结合高校的具体情况,提出了运用自媒体工具推进学生管理工作创新的具体举措。 相似文献
977.
本文通过对计算机应用技术专业学生在企业顶岗实习期间进行调查研究,总结出学生在企业顶岗实习中的管理评价体系,用以充分调动学生的积极性和主动性,更好地进行顶岗实习和实现校企合作。 相似文献
978.
工程项目是建筑施工企业经营管理的源头和效益的源泉。加强工程项目合同管理,从源头上预防和化解法律风险,杜绝纠纷案件,是提升项目创效水平,实现项目效益的重要环节。本文论述了工程项目合同管理中容易引发的法律风险,以及就如何防范法律风险有针对性的提出了预防措施,对建筑施工企业防范法律风险有着较强的指导意义。 相似文献
979.
起源于日本的"5s"管理,是指在对生产现场的生产要素,如:人员、机器、材料和方法等进行的有效管理,这是日本企业独特的一种管理办法。由于应用此方法能够有效推动企业的良好发展,因此,现在已广泛应用于我国的各类型企业中,但是以职业技能教育为主的高职学院各类实训中心却少有应用,本文将介绍"5S"管理的作用及如何应用于实训中心教学管理中。 相似文献
980.
云计算是计算机科学技术与网络互联技术结合创新发展的产物,已经成为引领未来世界信息产业的关键性技术和手段。云计算在教育领域体现出了很大优势,改进学习方式,改造学习环境,同时可以降低IT成本,对于提高高校现有资产的效率、利用率和灵活性具有重要影响意义。 相似文献