全文获取类型
收费全文 | 1950篇 |
免费 | 49篇 |
专业分类
教育 | 1414篇 |
科学研究 | 135篇 |
各国文化 | 13篇 |
体育 | 205篇 |
文化理论 | 11篇 |
信息传播 | 221篇 |
出版年
2023年 | 24篇 |
2022年 | 14篇 |
2021年 | 20篇 |
2020年 | 43篇 |
2019年 | 81篇 |
2018年 | 87篇 |
2017年 | 90篇 |
2016年 | 65篇 |
2015年 | 43篇 |
2014年 | 66篇 |
2013年 | 515篇 |
2012年 | 40篇 |
2011年 | 45篇 |
2010年 | 29篇 |
2009年 | 40篇 |
2008年 | 42篇 |
2007年 | 34篇 |
2006年 | 49篇 |
2005年 | 26篇 |
2004年 | 36篇 |
2003年 | 29篇 |
2002年 | 29篇 |
2001年 | 26篇 |
2000年 | 36篇 |
1999年 | 24篇 |
1998年 | 15篇 |
1997年 | 20篇 |
1996年 | 9篇 |
1994年 | 19篇 |
1993年 | 14篇 |
1992年 | 15篇 |
1991年 | 13篇 |
1990年 | 12篇 |
1989年 | 17篇 |
1988年 | 13篇 |
1987年 | 12篇 |
1986年 | 14篇 |
1985年 | 12篇 |
1984年 | 16篇 |
1983年 | 12篇 |
1981年 | 12篇 |
1980年 | 8篇 |
1979年 | 16篇 |
1977年 | 8篇 |
1974年 | 8篇 |
1972年 | 8篇 |
1971年 | 9篇 |
1968年 | 7篇 |
1927年 | 8篇 |
1926年 | 10篇 |
排序方式: 共有1999条查询结果,搜索用时 562 毫秒
41.
Re-referral to child protective services: the influence of child, family, and case characteristics on risk status 总被引:2,自引:0,他引:2
INTRODUCTION: This study examines child, family, and case characteristics that impact rates of re-referral to Child Protective Services (CPS) using data on all closed CPS investigations for the state of Rhode Island between 2001 and 2004. METHOD: A longitudinal dataset of all referrals to CPS was created using state submissions to the National Child Abuse and Neglect Data System (NCANDS). After excluding children whose initial CPS investigation resulted in removal from the home, a Cox proportional hazards model was tested to examine factors impacting the likelihood of re-referral. RESULTS: Consistent with other research in this area, the initial 6-month period following case disposition is the period of greatest risk of re-referral. Approximately 13% of cases experienced a recurrent allegation during the first 6-month period; an additional 14% experienced a re-referral over the following 12-month period; 7% during the next 12-month period. Family poverty was the strongest predictor of re-referral, though a number of child and case characteristics were significantly related to recurrence. Cases that were substantiated at index were significantly less likely to result in a new allegation, though substantiated cases of physical abuse or those receiving post-investigation services were at higher risk. CONCLUSIONS: Children from families facing multiple stressors (e.g., low SES, parental substance abuse child disability) are at highest risk of re-referral to CPS and may benefit from the development of preventive services targeted immediately following case closings within CPS. 相似文献
42.
OBJECTIVE: Children's Advocacy Centers (CACs) aim to improve child forensic interviewing following allegations of child abuse by coordinating multiple investigations, providing child-friendly interviewing locations, and limiting redundant interviewing. This analysis presents one of the first rigorous evaluations of CACs' implementation of these methods. METHODS: This analysis is part of a quasi-experimental study, the Multi-Site Evaluation of Children's Advocacy Centers, which evaluated four CACs relative to within-state non-CAC comparison communities. Case abstractors collected data on investigation methods in 1,069 child sexual abuse cases with forensic interviews by reviewing case records from multiple agencies. RESULTS: CAC cases were more likely than comparison cases to feature police involvement in CPS cases (41% vs. 15%), multidisciplinary team (MDT) interviews (28% vs. 6%), case reviews (56% vs. 7%), joint police/child protective services (CPS) investigations (81% vs. 52%) and video/audiotaping of interviews (52% vs. 17%, all these comparisons p<.001). CACs varied in which coordination methods they used, and some comparison communities also used certain coordination methods more than the CAC with which they were paired. Eighty-five percent of CAC interviews took place in child-friendly CAC facilities, while notable proportions of comparison interviews took place at CPS offices (22%), police facilities (18%), home (16%), or school (19%). Ninety-five percent of children had no more than two forensic interviews, and CAC and comparison differences on number of interviews were mostly non-significant. CONCLUSIONS: Relative to the comparison communities, these CACs appear to have increased coordination on investigations and child forensic interviewing. The CAC setting was the location for the vast majority of CAC child interviews, while comparison communities often used settings that many consider undesirable. CACs showed no advantage on reducing the number of forensic interviews, which was consistently small across the sample. 相似文献
43.
Tonia A. Dousay Natasha P. Trujillo 《British journal of educational technology : journal of the Council for Educational Technology》2019,50(2):876-887
Existing research highlights conflicting results attempting to capture gender preferences with respect to unimodal versus multimodal designs in online learning. As online learning continues to expand, more research examining the role of gender in multimedia design holds considerable potential. However, the presence of multimedia in online learning contexts presents a more complex problem when taking into consideration the concept of learner interest. The current study sought to investigate gender differences in situational interest (SI) with respect to three different but related designs of an online, multimedia learning environment for continuing, professional education in emergency medical services. The content in these designs was identical, but applied different combinations of the redundancy and modality multimedia principles. A two-way analysis of variance was used to examine the types of SI by gender and type of multimedia design. While no significant difference or interaction effect was identified between gender and triggered SI, an interaction effect was observed for females and the different multimedia designs. Specifically, females reported a higher maintained SI when animation, narration and text were effectively combined. The findings of this study provide insight into best practices for instructional and media designers developing multimedia learning environments as well as future research implications. 相似文献
44.
Rhys C. Jones 《Teaching Statistics》2019,41(1):36-40
The use of statistical investigations as a teaching strategy have been shown to both motivate and engage students. The implementation of a statistical investigation to measure intelligence is described, covering core statistical principles and key elements of research design. 相似文献
45.
Given US students’ lack of international competitiveness in mathematics and science, many states have adopted the Common Core State Standards for Mathematics (CCSSM). To help ensure that the Standards for Mathematical Practice within the CCSSM and effective teaching practices are implemented appropriately, many teachers are emerging as teacher leaders with the intent of supporting teachers with this implementation. Unfortunately, not all of these teachers are necessarily prepared in the field of teacher leadership. Recognizing the importance of having well-prepared teacher leaders, this article describes the case of Ms. Hodges, as she transitioned from mathematics teacher to teacher leader. Data revealed that several factors affected Ms. Hodges’ transition, some positively and others negatively. These results as well as implications for teacher leader development are provided. 相似文献
46.
Charlotte Jones 《International Journal of Early Years Education》2019,27(2):153-169
This case study attempts to capture the way gender is constructed and experienced in the social world of the nursery school. It presents findings from a staff survey, structured and unstructured observations of one male’s and one female’s professional practice and one-to-one interviews with children aged three to four years. Despite practitioners’ reported intentions to challenge traditional notions of gender, construction of traditional gender distinctions was not problematised by staff and was upheld by comments of children. Children appeared to construct themselves in terms of gender stereotypes and were offered only limited alternative gender positions by the male and female practitioners. 相似文献
47.
This study demonstrates how academicians and practitioners can work together on an important topic that matters to organizational performance: the pivotal role played by salespeople during new product launches. In particular, the authors present three potential interventions that training and sales managers may use to sell a new product to salespeople. The results legitimatize the critical contribution of sales training to new product sales performance and highlight the value of the partnership between training professionals and sales managers. 相似文献
48.
This study explored Ridley and Novak's (1983) hypothesis that gender differences in science achievement are due to differences in rote and meaningful learning modes. To test this hypothesis, we examined gender differences in fifth- and sixth-grade students' (N = 213) self-reports of confidence, motivation goals (task mastery, ego, and work avoidance), and learning strategies (active and superficial) in whole-class and small-group science lessons. Overall, the results revealed few gender differences. Compared with girls, boys reported greater confidence in their science abilities. Average-achieving girls reported greater use of meaningful learning strategies than did their male counterparts, whereas low-ability boys reported a stronger mastery orientation than did low-ability girls. The results further showed that students report greater confidence and mastery motivation in small-group than whole-class lessons. In contrast, students reported greater work avoidance in whole-class than small-group lessons. In general, the findings provide little support for Ridley and Novak's hypothesis that girls tend to engage in rote-level learning in science classes. Differences in self-reports of motivation and strategy-use patterns were more strongly related to the student's ability level and to the structure of learning activities (small group vs. whole class) than to gender. © 1996 John Wiley & Sons, Inc. 相似文献
49.
Maddison J. Jones Brian Dawson Daniel F. Gucciardi Peter R. Eastwood Joanna Miller Shona L. Halson 《Journal of sports sciences》2019,37(8):864-870
The present study aimed to investigate pre-sleep behaviours (including evening electronic device use) and sleep quantity in well-trained athletes. Seventy well-trained athletes (44 females, 26 males) aged 21 ± 4 y from a range of team and individual sports were asked to complete an online sleep diary for 7 days. The sleep diary included questions about pre-sleep behaviours (e.g. napping, caffeine intake), electronic device use in the 2 h prior to bedtime (e.g. type of device and duration of use) and sleep (e.g. time in bed, sleep onset latency). On average, athletes spent 8:20 ± 1:21 h in bed each night. Associations between age, time in bed and sleepiness suggested that younger athletes spent more time in bed (B = -0.05, p = 0.001) but felt sleepier (r = -0.32, p < 0.01) than older athletes. On average, athletes mostly used electronic devices for 0–30 min prior to sleep. The use of multiple devices in the evening was associated with more perceived difficulty in falling asleep (B = 0.22, p = 0.03), but no associations existed with other sleep variables. In summary, younger athletes may require later start times or improved sleep quality to resolve excessive sleepiness. 相似文献
50.