全文获取类型
收费全文 | 266篇 |
免费 | 7篇 |
专业分类
教育 | 209篇 |
科学研究 | 16篇 |
各国文化 | 4篇 |
体育 | 6篇 |
文化理论 | 3篇 |
信息传播 | 35篇 |
出版年
2023年 | 2篇 |
2022年 | 4篇 |
2021年 | 8篇 |
2020年 | 6篇 |
2019年 | 20篇 |
2018年 | 27篇 |
2017年 | 16篇 |
2016年 | 14篇 |
2015年 | 9篇 |
2014年 | 11篇 |
2013年 | 41篇 |
2012年 | 13篇 |
2011年 | 8篇 |
2010年 | 4篇 |
2009年 | 6篇 |
2008年 | 6篇 |
2007年 | 5篇 |
2006年 | 11篇 |
2005年 | 4篇 |
2004年 | 6篇 |
2003年 | 2篇 |
2002年 | 3篇 |
2001年 | 2篇 |
2000年 | 2篇 |
1999年 | 1篇 |
1998年 | 1篇 |
1996年 | 3篇 |
1995年 | 1篇 |
1994年 | 2篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1991年 | 5篇 |
1989年 | 1篇 |
1988年 | 2篇 |
1987年 | 3篇 |
1986年 | 3篇 |
1985年 | 2篇 |
1984年 | 1篇 |
1983年 | 2篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1979年 | 3篇 |
1978年 | 1篇 |
1977年 | 2篇 |
1976年 | 1篇 |
1975年 | 2篇 |
1970年 | 1篇 |
1964年 | 1篇 |
1962年 | 1篇 |
排序方式: 共有273条查询结果,搜索用时 31 毫秒
101.
Bing E 《The Journal of perinatal education》2002,11(2):13-22
This paper is an account of the author's observation of three Amish births in 1972, one in a home and two in a hospital. This 30-year-old story illustrates normal birth among a group dedicated to "low-tech" living. Although some aspects of Amish life and birth may have changed in the past 30 years, the basic philosophy of life and birth has not. This philosophy serves as a living reminder to us that generations of women from many cultures have given birth in a similar manner. 相似文献
102.
103.
104.
105.
Marlia Elisabeth Banning 《传播与批判/文化研究》2013,10(3):285-304
Policy debate about global warming has been framed in the public sphere in the manner of most political topics, as a matter of “skeptics” and “supporters,” making it very difficult for many US publics to know what to believe. This essay critically reads a preeminent public policy debate—that of global warming—with a twofold purpose. I first array the extensive commercial and political efforts to manipulate public information about global warming in order to illustrate that this debate is a “disingenuous” or “pseudo-controversy,” which can be seen in the asymmetrical resources, motives, and authority behind the scenes. Second, I ask what institutional and discursive conditions have enabled this moment, in which the ideals of academic freedom and protocols of scientific inquiry hold precarious authority in the public arena, and argue that contemporary critical perspectives on knowledge and truth have been co-opted in public discourse, making it more difficult to intervention in commercial and political efforts to obfuscate and mislead US publics. 相似文献
106.
107.
Keeping track of what needs to be done and where and when and by whom is a common practice in Canadian households. The documentary tools used to coordinate the work of keeping track in everyday life are the focus of this paper. We consider these documentary tools as belonging to genres. On the basis of four in-depth interviews, observation, and photography, we identify four genres common to all participants: check-ins or status reports, lists, reminders, and calendars. We map examples of these genres to show that they are socially and intertextually connected—in genre systems—with institutions and organizations beyond the home. Archivists have much to gain by applying the concept of genre-as-social-action and using ethnographic methods to study personal records from the creator’s perspective. Such approaches provide insight into the contexts within which personal records are created and used, including the intertextual linkages between personal and institutional recordkeeping. 相似文献
108.
Feriel S. Hamdi Olivier Fran?ais Frederic Subra Elisabeth Dufour-Gergam Bruno Le Pioufle 《Biomicrofluidics》2013,7(4)
Cell fusion consists of inducing the formation of a hybridoma cell containing the genetic properties of the progenitor cells. Such an operation is usually performed chemically or electrically. The latter method, named electrofusion, is considered as having a strong potential, due to its efficiency and non-toxicity, but deserves further investigations prior to being applicable for key applications like antibody production and cancer immunotherapy. Indeed, to envision such applications, a high amount of hybrid cells is needed. In this context, we present in this paper a device for massive cell pairing and electrofusion, using a microarray of non-connected conductive pads. The electrofusion chamber––or channel––exposes cells to an inhomogeneous electric field, caused by the pads array, enabling the trapping and pairing of cells with dielectrophoresis (DEP) forces prior to electrofusion. Compared to a mechanical trapping, such electric trapping is fully reversible (on/off handling). The DEP force is contactless and thus eases the release of the produced hybridoma. Moreover, the absence of wire connections on the pads permits the high density trapping and electrofusion of cells. In this paper, the electric field mapping, the effect of metallic pads thickness, and the transmembrane potential of cells are studied based on a numerical model to optimize the device. Electric calculations and experiments were conducted to evaluate the trapping force. The structure was finally validated for cell pairing and electrofusion of arrays of cells. We believe that our approach of fully electric trapping with a simple structure is a promising method for massive production of electrofused hybridoma. 相似文献
109.
Elisabeth Rudowicz 《Scandinavian Journal of Educational Research》2013,57(3):273-290
Different manifestations of the impact of culture on creativity are discussed and illustrated by empirical studies. They include: (i) conceptualisation of creativity on both the explicit and implicit levels; (ii) attitudes towards creativity and values attached to creativity; (iii) channelling creative endeavour through different domains of human activities; and (iv) socialisation processes and educational goals and practices. It is argued that creative expression is a universal human phenomenon that is firmly grounded in culture and has its own profound impact on culture itself. The effects of culture on creativity are presented within an interactive model that, besides culture, also incorporates historical, societal and individual factors. Methodological dilemmas involved in cross-cultural studies of creativity are also discussed. 相似文献
110.
Elisabeth Gerver 《Open Learning》2013,28(2):28-32
In this article Greville Rumble, Planning Officer of the Open University, argues that the way in which the terms ‘open learning’ and ‘distance learning’ are used in practice is frequently misleading. Open learning has to do with access, structures, and the presence of dialogue and support systems. Many contiguous and distance education systems are open in their practices. In contrast, many so‐called ‘open learning systems’ are anything but open. This article examines the claims being made, and argues the need for greater clarity of thought and expression. 相似文献