全文获取类型
收费全文 | 244篇 |
免费 | 15篇 |
国内免费 | 30篇 |
专业分类
289篇 |
出版年
2024年 | 2篇 |
2023年 | 4篇 |
2022年 | 5篇 |
2021年 | 6篇 |
2020年 | 5篇 |
2019年 | 9篇 |
2018年 | 5篇 |
2017年 | 9篇 |
2016年 | 11篇 |
2015年 | 10篇 |
2014年 | 9篇 |
2013年 | 27篇 |
2012年 | 5篇 |
2011年 | 15篇 |
2010年 | 12篇 |
2009年 | 16篇 |
2008年 | 18篇 |
2007年 | 29篇 |
2006年 | 26篇 |
2005年 | 9篇 |
2004年 | 5篇 |
2003年 | 4篇 |
2002年 | 6篇 |
2001年 | 3篇 |
2000年 | 4篇 |
1999年 | 6篇 |
1996年 | 2篇 |
1995年 | 3篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1990年 | 1篇 |
1988年 | 1篇 |
1986年 | 1篇 |
1984年 | 3篇 |
1983年 | 2篇 |
1981年 | 1篇 |
1979年 | 2篇 |
1978年 | 1篇 |
1977年 | 1篇 |
1976年 | 2篇 |
1975年 | 1篇 |
1973年 | 2篇 |
1967年 | 3篇 |
1964年 | 1篇 |
排序方式: 共有289条查询结果,搜索用时 0 毫秒
191.
Y. Z. Liu H. T. Yuan Z. Q. Zeng X. L. Du X. D. Han Q. K. Xue 《Philosophical Magazine Letters》2013,93(9):687-693
Transmission electron microscopy has been used to investigate the (1100) and (1103) inversion domain boundaries in a ZnO film prepared by molecular beam epitaxy. The inversion domain was revealed by dark-field images and confirmed by convergent-beam electron diffraction. Interacting with a (0002) stacking fault, the inversion domain boundary in the (1100) plane alters its orientation from the [0001] direction and climbs on the (1103) plane to release the strain energy. These features are characterized and analysed by high-resolution electron microscopy and the geometric phase method. The findings are significant for understanding the formation and propagation of inverse domain boundaries in epitaxial ZnO films. 相似文献
192.
We propose the use of thickness-twist (TT) and face-shear (FS) vibration modes of an AT-cut quartz crystal plate resonator for simultaneous determination of the inertia and stiffness of a thin film deposited on a crystal surface. A theoretical analysis using Mindlin's first-order theory for crystal plates is performed to demonstrate the idea. Expressions for the stiffness ratio and mass ratio between the thin film and the resonator are presented in terms of frequency shifts of FS and TT modes, which are experimentally measurable. A numerical example is given. 相似文献
193.
194.
《管子·弟子职》篇中蕴含的教育思想应引起我们重视,其中强调“立志”的重要性、关注品德修养、“寓教于行”的教育方法以及倡导构建良好师生关系等方面,值得教育工作者深思和借鉴。 相似文献
195.
Dušan I. Bjelić 《Human Studies》1995,18(2-3):189-225
This paper offers an ethnomethodological clarification of Husserl's concepts of Galilean physics and regressive inquiry. It employs the reader's textual-practical operationalization of these concepts. With the use of a simple optical prism as a perspicuous case of a scientific instrument, the reader will be asked and instructed to make a self-reflexive inquiry into the practical contingencies of the prismatic field of reflection. The reader will discover that the geometric structures of the reflective field of the prism is an achievement and formalization of the reader's own operatlonalizations. I named these discoverable discovering operationspraxioms or practical axioms — the pre-scientific contingencies of the geometric structures of prismatic reflection.I would like to thank Mike Lynch, Eric Livingston, George Psathas and Shelley Schweizer-Bjelic for their comments. 相似文献
196.
意志与意识对记忆的交互影响 总被引:1,自引:0,他引:1
运用加工分离程序,研究了编码和提取时不同意志和意识水平对部首补笔的影响。结果发现:除编码阶段和提取阶段的意志之间不存在交互作用之外,同一阶段和(或)不同阶段的意志和(或)意识之间均存在显著的或非常显著的交互作用。研究表明:意志和意识两个因素对记忆存在复杂影响,在记忆研究中应关注意志因素的作用。研究结果验证了记忆的状态依存性。 相似文献
197.
本文研究了精氨酸加压素易化记忆巩固过程的作用,测定了这一作用过程中脑内15种游离氨基酸含量的变化。 1.第三天建立实验前1小时皮下注射AVP(2μg/只)显著地延缓了大鼠主动逃避条件反应的消退过程。 2.给予AVP的动物在建立期皮层视区和海马两脑区的GABA(γ-氨基丁酸)含量及海马的异亮氨酸含量下降。在保持期两脑区的苏氨酸含量下降,赖氨酸含量上升,海马的谷氨酸含量下降,但两脑区的GABA含量都没有显著变化。 3.电击应激反应的实验结果表明,给予AVP的动物海马的GABA含量及皮层视区苯丙氨酸含量下降。单独注射AVP后1小时,两脑区的天冬氨酸含量下降。AVP注射后48小时,脑内各种氨基酸含量都没有明显变化。 相似文献
198.
Dušan I. Bjelic 《Human Studies》1996,19(4):409-432
The aim of this paper is to give a self-reflective account of the building of Galileo's pendulum in order to discover what were the practical contingencies of building and using the pendulum for demonstrating the law of isochronism. In doing this, the unique Lebenswelt structures of Galilean physics are explicated through the ethnomethodological concepts developed by Harold Garfinkel. The presupposition is that the practical logic of Galilean physics is embedded in the instruments themselves. In building the pendulum and recovering its original use, Galilean physics becomes for ethnomethodologists a first-hand practical discovery. This is not a reconstruction of the mind of the historical Galileo but, rather, an explication of Galileo's practical perspective on the instrument as an intersubjective and interchangeable standpoint available for ethnomethodological analysis. This enables us to study historical facts from the standpoint of the practical logic of the original practice with a pedagogical eye for the instructive reproducibility of science.I would like to thank Mike Lynch, Eric Livingston, Jim MacLachlan, and Shelley Schweizer-Bjelic for their comments 相似文献
199.
FOK:是线索熟悉,还是目标提取? 总被引:7,自引:0,他引:7
以围棋定式为实验材料,检验了关于FOK判断的线索熟悉假说和目标提取假说。结果表明:在有线索可以利用的情况下,被试会依据线索的熟悉作出FOK判断;而在线索难以利用的情况下,被试就会依据目标的提取来作出FOK判断。该文还对FOK的研究方法提出了一点看法。 相似文献
200.
Shanshan Du Author Vitae 《Religion》2007,37(2):133-149
Located in China along the boarders of China and several Southeast Asian countries, Southwestern China is characterised by ethnic diversity and the influence of various world religions, especially that of different schools of Buddhism. This article examines how the De'ang people transform the cosmological order of Theravada Buddhism to reassert the indispensable position of their indigenous agricultural goddess, the Mother of Grain. Corresponding to myths that portray the reconciliation between the goddess and Gautama Buddha, the rituals dedicated to her are performed primarily by women, while male monastic institutions participate on certain ceremonial occasions. A comparison with similar beliefs and rituals in other cultural groups in the region demonstrates that the Mother of Grain in De'ang religion offers an exceptionally strong local challenge to the male bias embedded in Buddhism. By examining the conflicts and compromises between Buddhism and the indigenous religions of Southwest China, this article analyses the complex local negotiations of gender ideologies when world religions and local beliefs are at odds. 相似文献