全文获取类型
收费全文 | 545篇 |
免费 | 21篇 |
专业分类
教育 | 463篇 |
科学研究 | 11篇 |
各国文化 | 2篇 |
体育 | 24篇 |
文化理论 | 2篇 |
信息传播 | 64篇 |
出版年
2023年 | 10篇 |
2022年 | 15篇 |
2021年 | 14篇 |
2020年 | 20篇 |
2019年 | 32篇 |
2018年 | 46篇 |
2017年 | 46篇 |
2016年 | 50篇 |
2015年 | 29篇 |
2014年 | 23篇 |
2013年 | 111篇 |
2012年 | 24篇 |
2011年 | 16篇 |
2010年 | 22篇 |
2009年 | 13篇 |
2008年 | 16篇 |
2007年 | 12篇 |
2006年 | 12篇 |
2005年 | 11篇 |
2004年 | 7篇 |
2003年 | 8篇 |
2002年 | 5篇 |
2001年 | 4篇 |
2000年 | 1篇 |
1999年 | 2篇 |
1997年 | 1篇 |
1996年 | 3篇 |
1994年 | 1篇 |
1993年 | 1篇 |
1991年 | 2篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1986年 | 1篇 |
1981年 | 1篇 |
1918年 | 1篇 |
1917年 | 1篇 |
1912年 | 1篇 |
1908年 | 1篇 |
1835年 | 1篇 |
排序方式: 共有566条查询结果,搜索用时 15 毫秒
561.
Magnetic compass orientation in C57BL/6J mice 总被引:1,自引:0,他引:1
We report evidence for a robust magnetic compass response in C57BL/6J mice. Mice were trained to build their nests in one
of four magnetic directions by creating a light gradient along the long axis of a rectangular cage and positioning a nest
box at the opposite (dark) end. The mice were then tested overnight in a circular, visually symmetrical arena in one of four
magnetic field alignments. The positions of the nests built in the test arena showed strong unimodal orientation in the magnetic
direction coinciding with the dark end of the training cage. 相似文献
562.
Nicole T. Allen 《Quarterly Journal of Speech》2018,104(4):361-383
Chronos is a traditionally marginalized term in rhetorical studies. Historically paired with kairos, chronos is commonly taken to refer to chronology, empty, homogenous, and external time. I argue for a reconsideration and redefinition of chronos that pairs the term with a critical materialist theory of time as change, immanent temporalities. Chronos understood as an entanglement of immanent temporalities informs chronistic criticism. Chronistic criticism is a conceptual criticism investigating the rhetorical arrangement, or synchronization, of multiple processes of change. Reconsidering chronos makes room for investigating time-related texts, like ‘Iraq's first national calendar. This calendar emerged after the establishment of the ‘Iraqi state under the League of Nation's Mandate System where British authorities were charged with building a modern nation state from territories of the former Ottoman Empire. I demonstrate chronistic criticism examining Gertrude Bell's digital archive for observations about successes, failures, and competitors with the national calendar. A vitalized chronos stands to make substantive contributions to the study of numerous rhetorical concepts. Specifically, for this investigation, chronos offers new insights into political myths, calendars, nation building, and the potential influences of nonhuman immanent temporalities. 相似文献
563.
564.
Geoscience instructors depend upon photos, diagrams, and other visualizations to depict geologic structures and processes that occur over a wide range of temporal and spatial scales. This proof-of-concept study tests click-on-diagram (COD) questions, administered using a classroom response system (CRS), as a research tool for identifying spatial misconceptions. First, we propose a categorization of spatial conceptions associated with geoscience concepts. Second, we implemented the COD questions in an undergraduate introductory geology course. Each question was implemented three times: pre-instruction, post-instruction, and at the end of the course to evaluate the stability of students’ conceptual understanding. We classified each instance as (1) a false belief that was easily remediated, (2) a flawed mental model that was not fully transformed, or (3) a robust misconception that persisted despite targeted instruction. Geographic Information System (GIS) software facilitated spatial analysis of students’ answers. The COD data confirmed known misconceptions about Earth’s structure, geologic time, and base level and revealed a novel robust misconception about hot spot formation. Questions with complex spatial attributes were less likely to change following instruction and more likely to be classified as a robust misconception. COD questions provided efficient access to students’ conceptual understanding. CRS-administered COD questions present an opportunity to gather spatial conceptions with large groups of students, immediately, building the knowledge base about students’ misconceptions and providing feedback to guide instruction. 相似文献
565.
Jeremy Hodgen Becky Taylor Becky Francis Nicole Craig Nicola Bretscher Antonina Tereshchenko Paul Connolly Anna Mazenod 《British Educational Research Journal》2023,49(2):209-230
Despite extensive research on attainment grouping, the impact of attainment grouping on pupil attainment remains poorly understood and contested. This paper presents evidence from a study conducted with 2944 12–13 year olds, from 76 schools in England, who were allocated to between-class attainment groups (‘setting’) in English and mathematics over the first 2 years of secondary schooling. After controlling for prior attainment, pupils in the top set performed significantly better than pupils in the middle and bottom sets in both English and mathematics. The findings indicate a widening gap in attainment, especially in the case of English. Findings, especially in the case of mathematics, provide more evidence of a relative benefit for pupils placed in top sets than a relative detriment for those in bottom sets. 相似文献
566.
This paper provides introductory statistics instructors with the capacity to use engaging National Basketball Association (NBA) data within a web application to either strengthen students' understanding or introduce the concept of variance and one-way analysis of variance. Using engaging data within the classroom provides context to data that students deem applicable to their lives. This paper not only provides a lesson plan for teaching these concepts but also provides a web application and the engaging NBA dataset if the instructor decides to use the app or the data in another context. The NBA data selected to focus on the debate “Who is the greatest NBA player of all time?”. By using context students are familiar with and interested in, we can get them interested in and further engaged in statistics. 相似文献