全文获取类型
收费全文 | 3440篇 |
免费 | 102篇 |
国内免费 | 45篇 |
专业分类
教育 | 1467篇 |
科学研究 | 142篇 |
各国文化 | 5篇 |
体育 | 1420篇 |
综合类 | 432篇 |
信息传播 | 121篇 |
出版年
2023年 | 11篇 |
2022年 | 31篇 |
2021年 | 56篇 |
2020年 | 90篇 |
2019年 | 81篇 |
2018年 | 74篇 |
2017年 | 73篇 |
2016年 | 92篇 |
2015年 | 105篇 |
2014年 | 220篇 |
2013年 | 270篇 |
2012年 | 241篇 |
2011年 | 265篇 |
2010年 | 219篇 |
2009年 | 182篇 |
2008年 | 207篇 |
2007年 | 268篇 |
2006年 | 236篇 |
2005年 | 188篇 |
2004年 | 156篇 |
2003年 | 121篇 |
2002年 | 92篇 |
2001年 | 90篇 |
2000年 | 68篇 |
1999年 | 34篇 |
1998年 | 45篇 |
1997年 | 28篇 |
1996年 | 12篇 |
1995年 | 10篇 |
1994年 | 13篇 |
1993年 | 5篇 |
1992年 | 3篇 |
1990年 | 1篇 |
排序方式: 共有3587条查询结果,搜索用时 15 毫秒
111.
Luis Enrique Espinoza 《Sex education》2019,19(1):15-24
This study sought to investigate the association between nativity status and Hispanic young women’s formal sex education and parental sex education in the USA. We used data from a cross-sectional sample of 310 Hispanic young women aged 18–24 years old from the 2013–2015 US National Survey of Family Growth. We assessed 11 outcomes: four formal sex education topics; receiving any formal sex education; a formal sex education scale; four parental sex education topics; and receiving any parental sex education. The majority of our sample was US-born Hispanic versus foreign born (72.6% and 27.4% respectively). Foreign-born Hispanics were less likely to have received any type of formal sex education than US-born Hispanics (adjusted odds ratio = 0.81; 95% confidence interval: 0.24, 0.68, p < 0.01). Foreign-born Hispanics were less likely to have received parental HIV sex education than U.S.-born Hispanics (aOR = 0.36; 95% CI: 0.14, 0.97, p < 0.05). Nativity status did not have a significant effect on each unit increase on the scale (aB = –0.07, SE = 0.16; aβ = –0.42, p > 0.05). Our results indicate that having appropriate sex education knowledge is better than not being cognisant. Future studies should however examine the quality and content of sex education programmes so policymakers can better understand these young women’s sexual behaviours and decisions. 相似文献
112.
万晓兰 《南昌教育学院学报》2011,26(8):62-63
高等教育从"精英"阶段进入到"大众化"阶段以来,一大批新建本科院校在快速发展的同时,暴露出影响学校持续发展的关键师资问题,尤其是青年教师教学能力和素质水平的高低直接影响到人才培养质量。本文以厦门理工学院为例分析了新建本科院校在快速发展中的教师教学能力培养方面的问题,并有针对性地提出相应的对策。 相似文献
113.
刘晓权 《沈阳教育学院学报》2011,13(1):83-85
采用文献资料法、逻辑分析法,从社会学和社会心理学的角度对我国兴奋剂事件频发进行剖析,认为体育管理体制的落后等方面是造成兴奋剂问题产生的重要原因,并提出相应对策。 相似文献
114.
115.
BackgroundMaternal childhood experiences of maltreatment affect parenting and have consequences for a child’s social-emotional development. Adolescent mothers have a higher frequency of a history of maltreatment than adult mothers. However few studies have analyzed the interactions between adolescent mothers with a history of childhood maltreatment and their infants.ObjectiveThe aim of the study was to examine the effect of maternal childhood experiences of maltreatment on mother-infant emotion regulation at infant 3 months, considering both infant and mother individual emotion regulation and their mutual regulation.ParticipantsParticipants were 63 adolescent and young adult mother-infant dyads recruited at a hospital.MethodsThe mothers were administered the Adult Attachment Interview to evaluate reflective functioning and attachment and the Childhood Experiences of Care and Abuse was used to evaluate maternal childhood experiences of maltreatment. Mother-infant interactions were coded with a modified version of the Infant Caregiver Engagement Phases.ResultsDyads with mothers with childhood maltreatment (vs dyads with mothers with no maltreatment) spent more time in negative emotional mutual regulation (p = .009) and less time in positive and neutral mutual emotion regulation (p = .019). Cumulative maternal childhood experiences of maltreatment were associated positively with mother and infant negative states at individual and dyadic level and with the AAI scales of Passivity and Unresolved Trauma (p < .05). The effect of cumulative maternal childhood experiences of maltreatment on mother-infant emotion regulation was direct and not mediated by maternal attachment and reflective function.ConclusionsMaternal childhood experiences of maltreatment increase the risk connected to early motherhood, affecting mother-infant emotion regulation. 相似文献
116.
徐淑金 《重庆职业技术学院学报》2011,(5):27-29
青年农民工为海西城市社会经济发展做出了积极的贡献。但是,由于历史和体制的原因,他们不能享受与城市居民同等的待遇;又由于他们文化水平不高,缺少劳动技能,导致他们的收入水平较低,工作和生活状态十分堪忧。必须妥善地解决青年农民工问题,培养大批既有劳动技能又能吃苦耐劳的劳动者,加快海西城市化发展进程和构建谐社会。 相似文献
117.
农村小学低龄儿童寄宿现象在农村小学布局结构调整背景下产生。农村小学布局结构调整旨在促进教育资源合理利用,提升教学质量,但与此同时也产生一系列问题,其中低龄寄宿问题尤为严重。低龄寄宿减轻了父母负担,促进了学生自主性。但寄宿条件差、饮食安全得不到保障、低龄学生自理能力弱、亲情缺失、家庭教育功能弱化等问题不容忽视。本文以云南省X县农村小学布局结构调整为例,对其低龄儿童寄宿生身心健康、饮食安全、自理能力状况等展开状况调查,以找到解决策略,并对全国的农村小学低龄寄宿教育提供借鉴。 相似文献
118.
Jason Moran Gavin R. H. Sandercock Rodrigo Ramírez-Campillo César Meylan Jay Collison Dave A. Parry 《Journal of sports sciences》2017,35(11):1041-1051
This meta-analysis investigated the maturation-related pattern of adaptations to resistance training in boy athletes. We included studies examining the effects of 4–16-week resistance training programmes in healthy boy athletes aged 10–18 years. Pooled estimates of effect size for change in strength across all studies (n = 19) were calculated using the inverse–variance random effects model for meta-analyses. Estimates were also calculated for groups based on likely biological maturity status (“before”, “during” and “after” peak height velocity). Using the standardised mean difference, resistance training increased strength across all groups (effect size = 0.98, [CI: 0.70–1.27]). Strength gains were larger during (1.11 [0.67–1.54]) and after (1.01 [0.56–1.46]) peak height velocity than before (0.5 [?0.06–1.07]). Adaptations to resistance training are greater in adolescent boys during or after peak height velocity. These findings should help coaches to optimise the timing of training programmes that are designed to improve strength in boy athletes. 相似文献
119.
The purpose of the present study was to characterise the relationship between relative versus absolute internal and external loads in collegiate basketball players throughout the course of a season. Five Division I basketball players wore triaxial accelerometers throughout the 2015–2016 season and were tensiomyographically assessed weekly. One-way repeated-measure analysis of variance (RM ANOVA) with least-significant-difference (LSD) pairwise comparisons was used to determine which absolute weekly loads were different across the season. Cohen’s d was used to supplement the determination of meaningful relative load changes. Overall RM ANOVA models suggest absolute external load differences occurred (PlayerLoad? F = 17.63; IMA? F = 31.63). Two-way RM ANOVA models revealed main effect differences were revealed between muscle groups for Tc (F = 9.11) and Dm (F = 3.25). Meaningful relative load changes between weeks were observed for both external and internal. The present study observed that tensiomyography utilised as a tool to monitor internal load may be more suitable for detecting fatigue from relative external load changes versus absolute load attained. Limiting weekly training volume changes to ≤10% may maintain appropriate adaptation. Mediolateral plane IMA? and adductor longus muscle group may be pertinent metrics when monitoring female collegiate basketball athletes. 相似文献
120.
金芳 《辽宁教育学院学报》2013,(6):47-50
4岁是幼儿开始有真正意义的收藏的年龄.幼儿的收藏行为与成人有本质的不同,它是幼儿的需要和兴趣的满足.幼儿的收藏过程蕴含着丰富的教育价值,在成人正确的引导下,会使收藏行为成为一种促进幼儿发展的教育手段. 相似文献