首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   6451篇
  免费   2502篇
  国内免费   339篇
  2024年   7篇
  2023年   76篇
  2022年   79篇
  2021年   250篇
  2020年   302篇
  2019年   788篇
  2018年   610篇
  2017年   748篇
  2016年   709篇
  2015年   581篇
  2014年   524篇
  2013年   1021篇
  2012年   361篇
  2011年   415篇
  2010年   281篇
  2009年   320篇
  2008年   299篇
  2007年   273篇
  2006年   271篇
  2005年   247篇
  2004年   191篇
  2003年   191篇
  2002年   173篇
  2001年   139篇
  2000年   113篇
  1999年   81篇
  1998年   32篇
  1997年   22篇
  1996年   25篇
  1995年   26篇
  1994年   19篇
  1993年   16篇
  1992年   11篇
  1991年   9篇
  1990年   5篇
  1989年   7篇
  1988年   5篇
  1986年   2篇
  1985年   6篇
  1984年   3篇
  1983年   4篇
  1982年   8篇
  1981年   4篇
  1980年   2篇
  1979年   7篇
  1978年   9篇
  1977年   7篇
  1976年   9篇
  1975年   3篇
  1974年   1篇
排序方式: 共有9292条查询结果,搜索用时 31 毫秒
981.
The pro‐life paradox, as I call it, begins with a single claim endorsed by many American Christians: infants and young children are innocent in the sight of God because they cannot yet take responsibility for their spiritual well‐being. With this in mind, I argue that pro‐life believers have unwittingly fallen victim to a theological paradox in which their attempts to save the earthly lives of unborn children make it theoretically possible for said children to die an eternal death. On the one hand, many Christians trust in an eventual spiritual reckoning where God will separate the “sheep” from the “goats” (see Matthew 25:31–46), ushering the former into heaven while damning the latter to hell. However, those who cannot yet repent and seek salvation are not blamed for their spiritual failings. If they die, they go to heaven because they are too young and intellectually immature to know any better. But if dead children are spiritually blameless, then abortion practitioners have perversely and paradoxically saved millions of unborn souls by removing human volition (and thus damnation itself) from the equation and by making it possible for the unborn to experience the joys of heaven without the temptations of earth.  相似文献   
982.
Visual representations are prevalent in STEM instruction. To benefit from visuals, students need representational competencies that enable them to see meaningful information. Most research has focused on explicit conceptual representational competencies, but implicit perceptual competencies might also allow students to efficiently see meaningful information in visuals. Most common methods to assess students’ representational competencies rely on verbal explanations or assume explicit attention. However, because perceptual competencies are implicit and not necessarily verbally accessible, these methods are ill‐equipped to assess them. We address these shortcomings with a method that draws on similarity learning, a machine learning technique that detects visual features that account for participants’ responses to triplet comparisons of visuals. In Experiment 1, 614 chemistry students judged the similarity of Lewis structures and in Experiment 2, 489 students judged the similarity of ball‐and‐stick models. Our results showed that our method can detect visual features that drive students’ perception and suggested that students’ conceptual knowledge about molecules informed perceptual competencies through top‐down processes. Furthermore, Experiment 2 tested whether we can improve the efficiency of the method with active sampling. Results showed that random sampling yielded higher accuracy than active sampling for small sample sizes. Together, the experiments provide the first method to assess students’ perceptual competencies implicitly, without requiring verbalization or assuming explicit visual attention. These findings have implications for the design of instructional interventions that help students acquire perceptual representational competencies.  相似文献   
983.
Reality TV shows are characterized by the very intimate self‐disclosure of their participants early on in the shows. In everyday interactions, however, such intimate self‐disclosure is welcomed only when it evolves gradually. This discrepancy between reality shows and real life apparently contradicts previous research documenting the similarity between real relationships and relationships with media characters. The current research explores this apparent contradiction by examining whether the relationship between self‐disclosure and liking and the rules about the timing of self‐disclosure that apply in everyday interactions apply in reality TV. Study 1 shows that viewers prefer characters who make early intimate disclosures, and Study 2 shows that they prefer this disclosure to evolve gradually and become more intimate, as in real relationships.  相似文献   
984.
In this essay, I ask what the precise relation is between Laudato si's theology and its claims about our individual and corporate responsibility for the environment and the plight of the poor. To do so, I first clarify the relationship between the theological claims and its account of moral norms, situating the text within the history of western ethical theory. I then turn to reconstruct the submerged theology of the encyclical, focusing on Pope Francis's accounts of the techno‐economic paradigm and the possibility of an “integral ecology” paradigm. I end by assessing the text in terms of the coherence and plausibility of its argument as an ethical and theological statement.  相似文献   
985.
986.
987.
988.
Thomas M. King 《Zygon》2007,42(3):779-792
Several recent Roman Catholics who were known for their devotion have left accounts of their troubled faith. I consider three of these: St. Therese of Lisieux, Mother Teresa of Calcutta, and Pierre Teilhard de Chardin. Then I tell of the troubled atheism of Jean‐Paul Sartre. Finally, I use texts of Sartre and Teilhard to understand the unsettled nature of belief.  相似文献   
989.
农村初中生学习适应性发展的研究   总被引:24,自引:0,他引:24  
本研究运用测量的方法考察了 3 86名农村初中生学习适应性的发展。结果表明 ,初一学生的学习适应性显著地好于初二、初三、初四的学生 ;男女学生的学习适应性差异显著 ;在“学习态度”、“学习技术”、“学习环境”、“身心健康”四个分测验中 ,年级差异非常显著 ;优等生和差生在学习适应性上也存在着非常显著的差异。  相似文献   
990.
We compared the effects of two self-correction procedures on the spelling performance of 5 elementary school students with learning disabilities. Previous studies consistently have demonstrated self-correction to be more effective than traditional approaches to spelling instruction. However, we could find no single-subject design experiments analyzing the procedural details of how or when self-correction should be conducted to be most effective. For 4 days each week students practiced a list of 20 spelling words by listening to an audiotape on which the weekly list was dictated and writing the words. For half of each week's words, students checked and self-corrected after attempting each word; for the other half of the list, the students self-corrected after attempting all 10 words. An alternating treatments design showed self-correction after each word to be more effective for acquisition of new spelling words as measured by end-of-the-week tests for all 5 students, and maintenance of previously studied spelling words as measured by 1-week maintenance tests for 4 of the 5 students.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号