全文获取类型
收费全文 | 2119篇 |
免费 | 25篇 |
国内免费 | 1篇 |
专业分类
教育 | 1534篇 |
科学研究 | 288篇 |
各国文化 | 20篇 |
体育 | 49篇 |
综合类 | 1篇 |
文化理论 | 10篇 |
信息传播 | 243篇 |
出版年
2023年 | 18篇 |
2022年 | 17篇 |
2021年 | 33篇 |
2020年 | 31篇 |
2019年 | 45篇 |
2018年 | 76篇 |
2017年 | 69篇 |
2016年 | 81篇 |
2015年 | 54篇 |
2014年 | 73篇 |
2013年 | 415篇 |
2012年 | 56篇 |
2011年 | 60篇 |
2010年 | 55篇 |
2009年 | 60篇 |
2008年 | 64篇 |
2007年 | 57篇 |
2006年 | 69篇 |
2005年 | 54篇 |
2004年 | 44篇 |
2003年 | 45篇 |
2002年 | 30篇 |
2001年 | 35篇 |
2000年 | 36篇 |
1999年 | 24篇 |
1998年 | 23篇 |
1997年 | 30篇 |
1996年 | 25篇 |
1995年 | 28篇 |
1994年 | 22篇 |
1993年 | 35篇 |
1992年 | 29篇 |
1991年 | 29篇 |
1990年 | 25篇 |
1989年 | 20篇 |
1988年 | 21篇 |
1987年 | 23篇 |
1986年 | 16篇 |
1985年 | 18篇 |
1984年 | 15篇 |
1983年 | 15篇 |
1982年 | 17篇 |
1981年 | 18篇 |
1980年 | 17篇 |
1979年 | 11篇 |
1978年 | 8篇 |
1977年 | 12篇 |
1976年 | 14篇 |
1974年 | 7篇 |
1972年 | 8篇 |
排序方式: 共有2145条查询结果,搜索用时 15 毫秒
1.
2.
3.
Nancy K. Moore Margaret T. Shaffer Rita Furst Seifert 《Contemporary educational psychology》1985,10(1):83-92
This study investigated the basic cognitive skills soldiers must possess before entering the Army, skills that are needed for successful completion of entry-level training. Judgments of 126 instructors from 25 military occupational specialties were obtained on 129 candidate skills, which resulted in the identification of 55 basic skills. Factor analysis of these 55 skill items resulted in 11 interpretable factors. Mean scores on the factors were compared across factors and across Army training schools. The results of the study suggest that, for all occupational specialties studied, skills related to the learning process are as crucial as traditional academic skills for successful training course completion. These results have important implications for training for the Army as well as for industry. 相似文献
4.
5.
6.
7.
Objective: A natural cyclic peptide previously isolated from Citrus medica was synthesized by coupling oftetrapep-tide units Boc-Leu-Pro-Trp-Leu-Ome and Boc-Ile-Ala-Ala-Gly-Ome after proper deprotection at carboxyl and amino terminals followed by cyclization of linear octapeptide segment.Methods: Solution phase technique was adopted for the synthesis of cyclooctapeptide--sarcodactylamide.Required tetrapeptide units were prepared by coupling of Boc-protected dipeptides viz.Boc-Leu-Pro-OH and Boc-Ile-Ala-OH with respective dipeptide methyl esters Trp-Leu-Ome and Ala-Gly-Ome.Cyclization of linear octapeptide unit was done by p-nitrophenyl ester method.The structure of synthesized cyclopolypeptide was elucidated by FTIR,1H NMR,13C NMR,FABMS spectral data and elemental analysis.The newly synthesized peptide was evaluated for dif-ferent pharmacological activities including antimicrobial,anthelmintic and cytotoxic activities.Results: Synthesis of sarcodac-tylamide was accomplished with >78% yield utilizing dicyclohexylcarbodiimide (DCC) as coupling agent.Newly synthesized peptide possessed potent cytotoxic activity against Dalton's lymphoma ascites (DLA) and Ehrlich's ascites carcinoma (EAC) cell lines,in addition to moderate anthelmintic activity against earthworms Megascoplex konkanensis,Pontoscotex corethruses and Eudrilus sp.Moreover,cyclopolypeptide displayed good antimicrobial activity against pathogenic fungi Candida albicans and Gram-negative bacteria Pseudomonas aeruginosa,in comparison to standard drugs griseofulvin and ciprofloxacin.Conclusion: Solution phase technique employing DCC and triethylamine (TEA) as base proved to be effective for the synthesis of natural cyclooctapeptide.N-methyl morpholine (NMM) was found to be a better base for the cyclization of linear octapeptide unit in comparison to TEA and pyridine. 相似文献
8.
Social diversity is now commonplace in many communities in today’s globalised world. This diversity can be seen in any classroom of learners, and international studies have shown the complex ways in which disabilities, race, ethnicity, gender and social class can determine a child’s opportunity to succeed or fail in the education system. In Hong Kong, like in many educational contexts around the world, teachers are grappling with increasing diversity amongst their students, including teaching students with special educational needs (SEN) and non-Chinese speaking students (NCS) living in Hong Kong. This paper examines how three primary TEFL (Teaching English as a Foreign Language) teachers are constructing identities as inclusive practitioners as they grapple with enacting the inclusive education policy recently introduced into Hong Kong schools. The data are drawn from a small-scale collaborative reflective inquiry for teacher professional development. Drawing upon a sociocultural and critical framing of identity theory, we trace the three teachers’ identity construction as EFL teachers and inclusive education practitioners. We view the role of discourse, self-positioning and social context as key processes in teacher identity formation. Implications for furthering the development of inclusive education in EFL classrooms are offered. 相似文献
9.
Margaret Mackey 《Children‘s Literature in Education》1990,21(3):179-187
Margaret Mackey is studying for a master's degree in library and information studies at the University of Alberta in Canada. Previously, in Britain, she taught English language and literature in secondary schools for ten years. She has been secondary editor ofThe Essex Review of Children's Literature and has editedFestival Plays (Longman), a collection of young playwrights. 相似文献
10.
Very few empirical studies have investigated programmes in which doctoral students act as peer facilitators in faculty writing groups. We report on the development of a centrally delivered doctoral student writing programme in which twenty student participants were mentored and provided with the resources to initiate their own faculty-based doctoral writing groups. ‘Legitimate peripheral participation’ was used as a conceptual lens to interpret the data collected during the establishment and evaluation of the programme. All student participants in the preparatory training course, which was developed in consultation with postgraduate students and research supervisors, went on to become doctoral writing peer facilitators of peer writing groups. Insights from seven of these showed how a well-structured and supportive programme harnessed the benefits of peer learning by bringing personal rewards to participants and building institutional capacity around doctoral research writing literacies. 相似文献