全文获取类型
| 收费全文 | 298篇 |
| 免费 | 9篇 |
专业分类
| 教育 | 205篇 |
| 科学研究 | 55篇 |
| 各国文化 | 4篇 |
| 体育 | 8篇 |
| 文化理论 | 4篇 |
| 信息传播 | 31篇 |
出版年
| 2022年 | 3篇 |
| 2021年 | 9篇 |
| 2020年 | 9篇 |
| 2019年 | 12篇 |
| 2018年 | 12篇 |
| 2017年 | 11篇 |
| 2016年 | 11篇 |
| 2015年 | 7篇 |
| 2014年 | 10篇 |
| 2013年 | 78篇 |
| 2012年 | 8篇 |
| 2010年 | 8篇 |
| 2009年 | 8篇 |
| 2008年 | 2篇 |
| 2007年 | 5篇 |
| 2006年 | 6篇 |
| 2005年 | 4篇 |
| 2004年 | 5篇 |
| 2003年 | 3篇 |
| 2002年 | 4篇 |
| 2001年 | 6篇 |
| 1999年 | 3篇 |
| 1997年 | 3篇 |
| 1994年 | 3篇 |
| 1993年 | 3篇 |
| 1992年 | 3篇 |
| 1987年 | 3篇 |
| 1984年 | 3篇 |
| 1982年 | 2篇 |
| 1980年 | 2篇 |
| 1978年 | 3篇 |
| 1975年 | 2篇 |
| 1974年 | 3篇 |
| 1969年 | 2篇 |
| 1968年 | 2篇 |
| 1962年 | 2篇 |
| 1961年 | 2篇 |
| 1925年 | 2篇 |
| 1922年 | 1篇 |
| 1921年 | 1篇 |
| 1920年 | 1篇 |
| 1919年 | 1篇 |
| 1918年 | 2篇 |
| 1910年 | 1篇 |
| 1908年 | 3篇 |
| 1905年 | 2篇 |
| 1900年 | 1篇 |
| 1895年 | 1篇 |
| 1890年 | 5篇 |
| 1889年 | 8篇 |
排序方式： 共有307条查询结果，搜索用时 46 毫秒
71.
72.
73.
This paper presents results of a study of corporate library selection activity performed to support four global corporations. The firms examined are involved in providing communication, knowledge in its different forms, and computing. Using these results, this paper synthesizes literature on selection and collection development to present an approach to developing an eventual theory of collection development. Using this approach, such a theory would predict the performance of selection activity; the operation of its attributes, such as its cost, centralization, and formalization; and the operation of other collection development activities. Concurrently, it would explain these predictions using dynamics such as the need to include specified ideas within selected content, the need to cope with selector's abilities to choose vast amounts of content, the need to contain selection cost, and the need to gather material together so as to support browsing and its resulting impromptu development of ideas. 相似文献
74.
75.
Lillian V?Ortiz-FournierEmail author Eulalia?Márquez Felix Rogelio?Flores Juan C?Rivera-Vázquez Pablo A?Colon 《知识管理研究与实践》2010,8(3):203-215
This research is part of a broader investigation to analyse the processes followed by the Caguas Municipality at the Commonwealth of Puerto Rico in an effort to develop the characteristics of a ‘Smart City’ as an example of sustainable development. We describe the integration of the educational institutions’ initiatives and the municipal government strategic plan to contribute to the knowledge and intellectual capital that brings sustainability to the city. An actor's model was designed to represent this integration. The conceptual framework was based on the concepts of knowledge production and sharing as applied to the collaboration between critical representative actors. Field research consisting of in-depth interviews was performed to ascertain the integration processes and their relationship with such processes of knowledge production and sharing. The results showed that the governance paradigm implemented is already empowering the citizens to contribute with intellectual capital that brings sustainability to Caguas. 相似文献
76.
77.
78.
79.
80.
This paper deals with real-time discrete adaptive output trajectory tracking for induction motors in the presence of bounded disturbances. A recurrent high order neural network structure is used to design a nonlinear observer and based on this model, a discrete-time control law is derived, which combines discrete-time block control and sliding modes techniques. Applicability of the scheme is illustrated via experimental results in real-time for a three phase induction motor. 相似文献