全文获取类型
收费全文 | 120篇 |
免费 | 2篇 |
专业分类
教育 | 66篇 |
科学研究 | 14篇 |
体育 | 3篇 |
信息传播 | 39篇 |
出版年
2023年 | 1篇 |
2020年 | 2篇 |
2019年 | 10篇 |
2018年 | 7篇 |
2017年 | 3篇 |
2016年 | 4篇 |
2015年 | 3篇 |
2014年 | 2篇 |
2013年 | 29篇 |
2012年 | 2篇 |
2011年 | 3篇 |
2010年 | 3篇 |
2009年 | 2篇 |
2008年 | 1篇 |
2007年 | 1篇 |
2006年 | 2篇 |
2005年 | 4篇 |
2004年 | 4篇 |
2003年 | 2篇 |
2002年 | 1篇 |
2001年 | 2篇 |
2000年 | 3篇 |
1999年 | 1篇 |
1998年 | 1篇 |
1997年 | 1篇 |
1996年 | 1篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1993年 | 1篇 |
1988年 | 1篇 |
1987年 | 2篇 |
1986年 | 1篇 |
1985年 | 2篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1976年 | 1篇 |
1975年 | 1篇 |
1974年 | 1篇 |
1971年 | 2篇 |
1966年 | 1篇 |
1925年 | 2篇 |
1924年 | 1篇 |
1923年 | 1篇 |
1918年 | 1篇 |
1917年 | 1篇 |
1915年 | 2篇 |
1912年 | 1篇 |
1910年 | 1篇 |
排序方式: 共有122条查询结果,搜索用时 1 毫秒
31.
32.
33.
34.
Walton LJ Hasson S Ross FV Martin ER 《Bulletin of the Medical Library Association》2000,88(2):165-171
In 1995, the National Library of Medicine (NLM) and the Public Health Service (PHS) recommended that special attention be given to the information needs of unaffiliated public health professionals. In response, the National Network of Libraries of Medicine (NN/LM) Greater Midwest Region initiated a collaborative outreach program for public health professionals working in rural east and central Iowa. Five public health agencies were provided equipment, training, and support for accessing the Internet. Key factors in the success of this project were: (1) the role of collaborating agencies in the implementation and ongoing success of information access outreach projects; (2) knowledge of the socio-cultural factors that influence the information-seeking habits of project participants (public health professionals); and (3) management of changing or varying technological infrastructures. Working with their funding, personnel from federal, state, and local governments enhanced the information-seeking skills of public health professionals in rural eastern and central Iowa communities. 相似文献
35.
36.
37.
Many factors and pressures affect decisions made in UK university libraries on opening hours especially 24/7. This article reports on a project to examine the decision making process, influential factors, and stakeholders. A workshop for senior library managers in the East Midlands was held to gather data and share experiences. From analysis of the workshop a framework of influential factors was devised and the decision making process was examined. Although each library had different priorities, important factors overall included pressure from undergraduates and the student's union, and provision during exam periods. Further research to examine the framework nationally is required. 相似文献
38.
Giraud G Pethig R Schulze H Henihan G Terry JG Menachery A Ciani I Corrigan D Campbell CJ Mount AR Ghazal P Walton AJ Crain J Bachmann TT 《Biomicrofluidics》2011,5(2):24116
The manipulation of ribosomal RNA (rRNA) extracted from E. coli cells by dielectrophoresis (DEP) has been demonstrated over the range of 3 kHz-50 MHz using interdigitated microelectrodes. Quantitative measurement using total internal reflection fluorescence microscopy of the time dependent collection indicated a positive DEP response characterized by a plateau between 3 kHz and 1 MHz followed by a decrease in response at higher frequencies. Negative DEP was observed above 9 MHz. The positive DEP response below 1 MHz is described by the Clausius-Mossotti model and corresponds to an induced dipole moment of 3300 D with a polarizability of 7.8×10(-32) F m(2). The negative DEP response above 9 MHz indicates that the rRNA molecules exhibit a net moment of -250 D, to give an effective permittivity value of 78.5 ε(0), close to that of the aqueous suspending medium, and a relatively small surface conductance value of ~0.1 nS. This suggests that our rRNA samples have a fairly open structure accessible to the surrounding water molecules, with counterions strongly bound to the charged phosphate groups in the rRNA backbone. These results are the first demonstration of DEP for fast capture and release of rRNA units, opening new opportunities for rRNA-based biosensing devices. 相似文献
39.
Jessica Walton 《Ethnography and Education》2019,14(3):264-278
ABSTRACTIn Australia, intercultural understanding has been prioritised in education and curriculum documents at both federal and state levels. Alongside this educational priority, schools have also been encouraged to demonstrate ‘engagement’ with ‘Asia’, such as through a partnership with another school in the Asia-Pacific region. My research findings are based on an ethnographic study of Year 5 and 6 Australian children's experiences of an intercultural school partnership initiative through on-line classroom exchanges over a two-year period. Through a critical analysis of ‘complexity reduction’ I draw attention to the processes through which children made sense of perceived racial and cultural differences as part of their involvement in partnership activities and conclude with some reflections on the extent to which educational initiatives such as intercultural school partnership programmes that aim to foster intercultural understanding can do so without reinforcing unequal intercultural relations and stereotypes. 相似文献
40.
Walton SA 《Endeavour》2000,24(4):152-156
The Renaissance saw the evolution of troop management, fortification and artillery into ‘mathematical’ sciences and those who practiced these tasks into ‘mathematical practitioners’. These terms have been allowed to imply that these areas were deeply theoretical, whereas they varied from theoretical to simply numerical. Gunnery, in particular, tended towards the latter. Practitioners of the simpler mathematics, however, gained by being able to connect their action to the more impressive study of ‘the mathematicks’. Future work must recognize more critically the distinction inherent in the term ‘mathematical’ when applied to the arts of the Renaissance. 相似文献