全文获取类型
收费全文 | 1081篇 |
免费 | 6篇 |
国内免费 | 10篇 |
专业分类
教育 | 850篇 |
科学研究 | 69篇 |
各国文化 | 1篇 |
体育 | 19篇 |
综合类 | 13篇 |
文化理论 | 1篇 |
信息传播 | 144篇 |
出版年
2023年 | 5篇 |
2022年 | 13篇 |
2021年 | 35篇 |
2020年 | 53篇 |
2019年 | 29篇 |
2018年 | 18篇 |
2017年 | 29篇 |
2016年 | 11篇 |
2015年 | 17篇 |
2014年 | 67篇 |
2013年 | 112篇 |
2012年 | 54篇 |
2011年 | 62篇 |
2010年 | 62篇 |
2009年 | 78篇 |
2008年 | 100篇 |
2007年 | 80篇 |
2006年 | 43篇 |
2005年 | 34篇 |
2004年 | 54篇 |
2003年 | 32篇 |
2002年 | 33篇 |
2001年 | 19篇 |
2000年 | 12篇 |
1999年 | 9篇 |
1998年 | 3篇 |
1997年 | 9篇 |
1996年 | 6篇 |
1995年 | 5篇 |
1994年 | 2篇 |
1993年 | 4篇 |
1991年 | 1篇 |
1990年 | 2篇 |
1989年 | 2篇 |
1987年 | 1篇 |
1984年 | 1篇 |
排序方式: 共有1097条查询结果,搜索用时 15 毫秒
21.
Influences affecting the soil-water characteristic curve 总被引:2,自引:0,他引:2
INTRODUCTION The soil-water characteristic curve (SWCC) gives the relationship between the amount of water in the soil (i.e. gravimetric or volumetric water content) and soil suction (i.e. matric suction at low suction and total suction at high suction). Many properties of a partially saturated soil such as the coefficient of permeability, shear strength and volume strain, pore size distribution, the amount of water contained in the pores at any suction, can be obtained from the SWCC. … 相似文献
22.
The influence of KH\-2PO\-4, peptone and brown sugar on Termitomyces fuliginosu's mycelium formation was studied with the application of the design of quadratic rotation general combination based on determining the growth curve. A quadratic regression model of biomass to the doses of the above three factors was established. The model fit well and therefore the optimum fermentation condition was obtained. Responses of biomass to the three single factors and to their interactions were discussed. Thus, the highest level of biomass, 21.1 g/L, appeared under the optimized conditions when the initial KH\-2PO\-4, peptone and brown sugar were 1 g/L, 4 g/L and 72 g/L respectively. 相似文献
23.
Mathematical biography and key rhetoric 总被引:1,自引:0,他引:1
Raimo Kaasila 《Educational Studies in Mathematics》2007,66(3):373-384
The intention of this article is to consider the use of narrative and rhetorical inquiry as research methods. I construct
a mathematical biography of one elementary teacher trainee, Sirpa, who had performed well in her advanced mathematics course
in upper secondary school. I describe her development as a mathematics teacher during teacher education from her second-year
methods course and teaching practice to fourth-year teaching practice. Narrative inquiry is more than a case study: Sirpa’s
mathematical biography is a story that describes how she constructs her mathematical identity. I also analysed the key rhetoric
that Sirpa used in her talk, key rhetoric here referring to the strategy by which she constructed continuity and coherence. 相似文献
24.
包丽君 《宁波广播电视大学学报》2011,9(1):73-75
针对高职数学教学现状,讨论了高职数学教学中教学内容及教学方法改革的必要性。同时,简要地介绍了MATLAB软件,并举例说明了利用其进行数学实验教学的优点和作用。 相似文献
25.
郑永冰 《鞍山师范学院学报》2011,13(2):5-9
分析了财经院校本科专业的数学教育现状和学生数学素质培养方面存在的问题,详细阐述了大学生数学建模活动的主旨、特点及作用,指出数学建模活动在培养学生的数学素质,特别是在提高学生的创新能力方面有明显的效果.进行了两次财经院校本科生数学学习现状的问卷调查,并对调查结果进行了分析.最后,指出了大学生数学建模活动进一步深入发展的必由之路是以数学基础课为主干,实现数学基础知识与体现数学应用特点的数学模型的有机结合. 相似文献
26.
Individual, family and community risk factors might determine the success or failure of educational interventions. The study is a secondary analysis, aimed at identifying distinctive constellations of risk for educational attainment, and at exploring whether membership to these constellations moderated the impact of a cluster-randomized reading intervention in rural India. By means of latent profile analysis, four constellations of risk were identified based on individual and family risk-factors. Multilevel cumulative logit models confirmed that the intervention had a positive impact on the outcome, and revealed that profile membership did not moderate the effect of the intervention. However more nuanced analysis showed that the intervention worked differently for children with different risk-profiles depending on contextual factors. 相似文献
27.
28.
在高校教改新形势下,数学专业基础课程概率统计的课程与教学改革也势在必行.如何走出一条符合民族地区实情的教改之路?本文根据在具体教学实践中进行教改的尝试,从教学内容、教学方法、教学与科研等方面进行了阐述,以促进民族地区概率统计教学改革的深入进行. 相似文献
29.
《Journal of Intercultural Communication Research》2013,42(1):44-63
This is an ethnographic study which investigates the practices of language maintenance and ethnic identity affiliation for immigrant/migrant Nepalese families with primary to middle school children in the United Kingdom. The study presents a comparative case study analysis of three Nepalese immigrant/migrant families. Participant observation, semi-structured interviews, and historical narrative interview were used. The study investigated prior exposure to home country, ethnic, cultural, and social literacy practices that occurred in various contexts during a nine-month period. This analysis revealed a phenomenon I termed peripheral ritualized practices. Exposure to peripheral ritualized practices over time creates positive changes in attitudes toward multilingualism and diversity. 相似文献
30.