全文获取类型
收费全文 | 14143篇 |
免费 | 48篇 |
国内免费 | 3篇 |
专业分类
教育 | 10724篇 |
科学研究 | 1353篇 |
各国文化 | 41篇 |
体育 | 698篇 |
综合类 | 1篇 |
文化理论 | 420篇 |
信息传播 | 957篇 |
出版年
2023年 | 9篇 |
2022年 | 19篇 |
2021年 | 26篇 |
2020年 | 58篇 |
2019年 | 107篇 |
2018年 | 2272篇 |
2017年 | 2202篇 |
2016年 | 1677篇 |
2015年 | 173篇 |
2014年 | 201篇 |
2013年 | 664篇 |
2012年 | 297篇 |
2011年 | 762篇 |
2010年 | 888篇 |
2009年 | 494篇 |
2008年 | 710篇 |
2007年 | 1230篇 |
2006年 | 132篇 |
2005年 | 459篇 |
2004年 | 509篇 |
2003年 | 436篇 |
2002年 | 184篇 |
2001年 | 53篇 |
2000年 | 62篇 |
1999年 | 37篇 |
1998年 | 33篇 |
1997年 | 43篇 |
1996年 | 30篇 |
1995年 | 33篇 |
1994年 | 29篇 |
1993年 | 39篇 |
1992年 | 26篇 |
1991年 | 34篇 |
1990年 | 20篇 |
1989年 | 22篇 |
1988年 | 22篇 |
1987年 | 19篇 |
1986年 | 18篇 |
1985年 | 15篇 |
1984年 | 20篇 |
1983年 | 13篇 |
1982年 | 15篇 |
1981年 | 17篇 |
1980年 | 6篇 |
1979年 | 6篇 |
1978年 | 10篇 |
1977年 | 8篇 |
1976年 | 11篇 |
1975年 | 6篇 |
1973年 | 5篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
131.
Noam Miller 《Learning & behavior》2018,46(1):5-6
Sasaki and Biro (2017, Nature Communications, 8, 15049) show that pairs of pigeons can increase the efficiency of their homing routes over several ‘generations’ in which pair members are gradually replaced by naïve birds. Their findings show that socially transmitted cumulative alterations of behavior are not unique to humans and suggest a way to examine potential mechanisms of cultural evolution. 相似文献
132.
This article investigates how culture shapes instruction in three early care and education programs on the Flathead Indian Reservation. Interviews with eight early childhood teachers as well as classroom observations were conducted. The investigation is framed by the following research question: How does the culture of the family and community shape curriculum? Data analysis suggested that ongoing communication with parents and community about teaching within a culturally relevant context, building a sense of belongingness and community through ritual, and respecting children, families, and community were essential to defining the Native American Indian culture within these early learning programs. 相似文献
133.
In this paper, the effects of second-order difference-frequency wave forces on the global motion of an offshore wind turbine system with a large displacement under the survival condition are studied. In this case, the hydrodynamic force is the main force because the blades are feathered to reduce the lifting force. The first-order hydrodynamic forces are calculated by WADAM, while the second-order wave forces are calculated by a customized MATLAB module. Then the hydrodynamic coefficients are transferred to the wind turbine analytical code FAST. Through the comparisons of dynamic responses between the first- and second-order numerical models, it is found that the second-order wave forces significantly influence the motion of floating wind turbine under the survival condition. Moreover, neglecting the second-order force significantly underestimates the tension forces in the mooring lines. 相似文献
134.
WANG Jin LU Guo-dong LI Ji-tuo CHEN Long ZHANG Dong-liang 《浙江大学学报(A卷英文版)》2007,8(10):1642-1649
This paper focuses on a pattern design method for a 3D triangular garment surface. Firstly, some definitions of 3D style lines are proposed for designing the boundaries of patterns as drawing straight lines or splines on the triangular surface. Additionally some commonly used style lines are automatically generated to enhance design efficiency. Secondly, after style lines are preprocessed, a searching method is presented for quickly obtaining the boundaries and patches of a pattern on the 3D trian- gular surface. Finally a new pattern design reuse method is introduced by encoding/decoding the style line information. After style lines are encoded, the pattern design information can be saved in a pattern template and when decoding this template on a new garment surface, it automates the pattern generation for made-to-measure apparel products. 相似文献
135.
The paper proposes a new method for computation of the Wigner-Ville distribution (WVD) taking account of the conjugate symmetry of the WVD kernel function and the periodicity and symmetry of the trigonometric function. The method transfers the computation of WVD into real field from complex field to remove the redundancies in the fast Fourier transform(FFT) computation. The realization of fast cosine operation and fast sine operation considerably reduces the computation cost. Theoretical analysis shows that 相似文献
136.
Joy Howard 《The Urban Review》2018,50(4):693-712
The author asserts that the field of teacher education must begin a critical conversation to better prepare and support teachers in attending to the complexities of racialized identities, experiences, and perspectives of multiracial students in K12 schools. The author offers a review of literature relevant to multiracial students, and draws from the emerging theoretical framework of Multicrit (Harris in Int J Qual Stud Educ 29(6):795–813, 2016) to present monoracism, ahistoricism, colorism and intersectionality to analyze excerpts from three respective research studies. Each excerpt demonstrates an imperative to build a critical understanding of multiracial students within teacher work. The author concludes with implications for future research and practice. 相似文献
137.
Cheng-hang Zheng Li Wang Yong-xin Zhang Wei-guo Weng Hai-tao Zhao Jin-song Zhou Xiang Gao 《浙江大学学报(A卷英文版)》2018,19(1):68-79
The co-benefit of hazardous trace elements such as mercury (Hg), arsenic (As), and selenium (Se) capture in dust removal devices of ultra-low emission coal-fired power plants was investigated. Feed fuel and ash samples collected from 15 different coal-fired power units equipped with ultra-low emission systems were characterized to determine the concentrations and distribution characteristics of trace elements. It was found that the low-low temperature electrostatic precipitator (LLT-ESP) and the electrostatic fabric filter (EFF) had greater abatement capacity for Hg than normal cold-side ESP (CS-ESP). Only 0.8%–36.1% of Hg escaped from LLT-ESP and EFF, whereas 42.1%–90.6% of Hg escaped from CS-ESP. With the employment of EFF and ESP (inlet temperature<125 °C), 72.3%–99.1% of As and 70.7%–100% of Se could be captured before the wet flue gas desulfurization (WFGD) system. The significance level of the effects on the abatement capacity for Hg, As, and Se in ESP were analyzed by the Pearson correlation analysis and grey relational analysis. The results indicated that the low inlet temperature of LLT-ESP had significant promotional effect on the simultaneous removal of Hg, As, and Se. The smaller particle size of fly ash can be conducive to the adsorption of hazardous trace elements. The inhibitory effect of sulfur content in coal was significant for the enrichment of Hg and Se in fly ash. 相似文献
138.
139.
Jennifer Rowsell Mark Shillitoe 《British journal of educational technology : journal of the Council for Educational Technology》2019,50(4):1544-1559
The idea of making as a form of activism or, as we refer to it in this paper, craftivism, underpins our ambition to transform pedagogical environments into spaces of possibility through sensory and affective making practices. A craftivist agenda pushes for open teaching and learning with materials so that students can inhabit a what if space which ruptures institutional time and space. Beginning with a theorization of disruptive making and dissensus and then moving on to foreground a materialist stance on making, the paper illustrates how students experience materialities across two very different classroom environments and how these experiences led to greater presence, voice and agency for students. There is an underlying focus in the paper on embodied responses and affective flows. After theorizing craftivism, there are three sections that explore making, teaching and feeling through craftivist, postdigital methods. 相似文献
140.