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951.

This paper reviews the results of a citation analysis conducted to determine the extent of references to African American scholarship in American criminology texts published between 1918 and 1960. The analysis showed that African American graduates from the University of Chicago's “Chicago School”, including Charles Johnson, E. Franklin Frazier, Monroe Work, and Earl R. Moses, were cited most often. They were usually cited in discussions of either race or culture areas and crime. African American scholars' discussions of the effects of social, economic, and political conditions such as slavery, segregation, racism and oppression on crime and criminality, especially among African Americans, were generally not cited. These findings suggest that while claims that African American scholarship cannot be found in mainstream publications might be somewhat overstated as they relate to early American criminology texts, the most important themes found in the writings of African Americans were excluded.  相似文献   
952.
A contingency contract procedure was used to reduce truancy in a 13-year-old learning-disabled subject. The subject received a daily amount of trading stamps contingent on school attendance. Results showed a significant decrease in truancy from three to four days per week to less than one per week. A reversal design indicated that truancy could be controlled by the contingency procedure.  相似文献   
953.
The classroom environment influences students’ academic outcomes, but it is often students’ perceptions that shape their classroom experiences. Our study examined the extent to which observed classroom environment features shaped perceptions of the classroom, and explained levels of, and changes in, girls’ motivation in junior secondary school science classes across two school terms. Girls have been found to feel less capable than boys and to under-participate in science classrooms, even though their achievement levels are similar. Four teachers and five of their classrooms of students (N = 52) reported their perceptions of the classroom environment, and trained observers rated the ‘actual’ classroom environment. Students also completed questions regarding their motivations for science at both time points. Hierarchical linear modelling showed that students’ perceptions of classroom structure were very important and exerted significant influence on science motivations. All of the six observed classroom dimensions affected students’ extrinsic utility value, via perceptions of structure. Other classroom dimensions showed particular patterns of relationship with motivations. Teachers’ perceptions of the classroom environment were often more positive than those of the students, which is congruent with previous research. The findings have implications for retaining girls in science and, thereby, addressing the gender gap in science-related vocations.  相似文献   
954.
ABSTRACT

To tell the whole story of the struggle for woman suffrage, we need to begin the story well before 1848 and continue it long after 1920. For those teaching about woman suffrage, this essay offers resources that enable you to situate the 19th Amendment within a richer narrative of woman suffrage.  相似文献   
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956.
The purposes of the present study were to examine associations between risk factors and the cognitive performance from one to three years of age of children living in poverty, and to investigate the protective and/or promotive effects of EHS on children's cognitive skill performance. Analyses were conducted using data from the Early Head Start (EHS) Research and Evaluation Project, a prospective study of 3001 children and families living in poverty. There were four main findings. First, children's cognitive skill scores decreased significantly from one to three years of age in comparison to national norms. Second, children whose families were on government assistance, children whose mothers had less than a high school education, children who received lower levels of cognitive and language stimulation at home, and children who had higher levels of negative emotionality evidenced more rapid rates of decline. Third, children in families who received government assistance, children whose parents were unemployed, and children whose mothers had less than a high school education had lower cognitive skill scores at three years of age. Fourth, children who were enrolled in Early Head Start (EHS) had higher cognitive skill scores at three years of age than their peers who were not in EHS. Implications for policy and early education are discussed.  相似文献   
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959.
This study explores how teachers developed and critically evaluated a range of teaching strategies that could support the discussion of a socio-scientific issue (SSI) that had the potential to be controversial. The issue was stem cell research and six New Zealand teachers of senior biology students (grades 12/13) took part in an action research project that was situational, collaborative and self-evaluative. The focus of the research was to identify communication barriers that interfered with classroom discussion and how teachers could help students cross cultural borders when they discussed SSIs that were outside their life worlds. The barriers to communication were access to relevant science knowledge, religion, language, an inability to question issues and cultural expectations of girls. Teachers trialled and adapted two discussion strategies, ‘Drawing the Line’ and ‘Diamond Ranking’ that provided a vehicle for their students to explore and discuss this issue from a range of perspectives. These discussion strategies enabled their students to take part in a dialogue where reciprocal conversation could occur because they had opportunities not only to explore their own perspectives but also other people's viewpoints.  相似文献   
960.
The aim of this study was to compare maximal accumulated oxygen deficit (hereafter O2 deficit) estimated from the methods of Whipp et al. (1986), Medbo et al. (1988), and Hill et al. (1998) to determine whether they agree sufficiently to be used interchangeably. Nineteen moderately to highly trained endurance runners first performed an incremental test to exhaustion for the determination of maximal oxygen uptake ([Vdot]O(2max)) and peak treadmill speed, followed by six randomly ordered constant-speed tests at 95, 100, 105, 110, 110, and 120% of peak treadmill speed. All tests were separated by at least 72 h and were performed within 4 weeks. The method of Whipp produced an O(2) deficit estimate that was lower than that derived from the method of Hill or Medbo (bias +/- 95% limits of agreement: -29.6 +/- 36.6 and -26.1 +/- 32.8 ml . kg(-1), respectively; P < 0.001). The O2 deficit did not differ between the methods of Hill and Medbo (bias +/- 95% limits of agreement: 3.5 +/- 41.6 ml . kg(-1); n.s.). However, poor correlations (0.21 < r < 0.33; n.s.) together with wide limits of agreement between O2 deficit estimates (70 - 80% of the mean response) clearly question using these methods interchangeably.  相似文献   
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