全文获取类型
收费全文 | 1103篇 |
免费 | 25篇 |
国内免费 | 2篇 |
专业分类
教育 | 792篇 |
科学研究 | 46篇 |
各国文化 | 20篇 |
体育 | 116篇 |
文化理论 | 10篇 |
信息传播 | 146篇 |
出版年
2023年 | 6篇 |
2022年 | 10篇 |
2021年 | 18篇 |
2020年 | 24篇 |
2019年 | 30篇 |
2018年 | 40篇 |
2017年 | 45篇 |
2016年 | 43篇 |
2015年 | 32篇 |
2014年 | 27篇 |
2013年 | 258篇 |
2012年 | 29篇 |
2011年 | 35篇 |
2010年 | 34篇 |
2009年 | 27篇 |
2008年 | 29篇 |
2007年 | 21篇 |
2006年 | 22篇 |
2005年 | 30篇 |
2004年 | 15篇 |
2003年 | 22篇 |
2002年 | 22篇 |
2001年 | 21篇 |
2000年 | 13篇 |
1999年 | 19篇 |
1998年 | 18篇 |
1997年 | 13篇 |
1996年 | 10篇 |
1995年 | 13篇 |
1994年 | 10篇 |
1993年 | 10篇 |
1992年 | 7篇 |
1991年 | 14篇 |
1990年 | 16篇 |
1988年 | 8篇 |
1987年 | 6篇 |
1986年 | 8篇 |
1985年 | 9篇 |
1984年 | 5篇 |
1983年 | 11篇 |
1982年 | 5篇 |
1981年 | 6篇 |
1980年 | 16篇 |
1979年 | 7篇 |
1978年 | 9篇 |
1977年 | 5篇 |
1976年 | 8篇 |
1974年 | 5篇 |
1967年 | 5篇 |
1966年 | 4篇 |
排序方式: 共有1130条查询结果,搜索用时 15 毫秒
101.
Trevor N. Simper Cecile Morris Anthony Lynn Ciara O'Hagan Karen Kilner 《运动与健康科学(英文)》2020,9(6):645-650
BackgroundOne-hour postprandial hyperglycemia is associated with increased risk of type 2 diabetes and cardiovascular disease. Physical activity (PA) has short-term beneficial effects on post-meal glucose response. This study compared the oral glucose tolerance test results of 3 groups of people with habitually different levels of PA.MethodsThirty-one adults without diabetes (age 25.9 ± 6.6 years; body mass index 23.8 ± 3.8 kg/m2; mean ± SD) were recruited and divided into 3 groups based on self-reported PA volume and intensity: low activity < 30 min/day of moderate-intensity activity (n = 11), moderately active ≥ 30 min/day of moderate-intensity PA (n = 10), and very active ≥ 60 min/day of PA at high intensity (n = 10). Participants completed an oral glucose tolerance test (50 g glucose) with capillary blood samples obtained at baseline, 15 min, 30 min, 45 min, 60 min, 90 min, and 120 min post-ingestion.ResultsThere were no significant differences between groups for age or body fat percentage or glycated hemoglobin (p > 0.05). The groups were significantly different in terms of baseline glucose level (p = 0.003) and, marginally, for gender (p = 0.053) and BMI (p = 0.050). There was a statistically significant effect of PA on the 1-h postprandial glucose results (p = 0.029), with differences between very active and low activity groups (p = 0.008) but not between the moderately active and low activity groups (p = 0.360), even when baseline glucose level and gender differences were accounted for. For incremental area under the curve there was no significant effect of activity group once gender and body fat percentage had been accounted for (p = 0.401). Those in the low activity group took 15 min longer to reach peak glucose level than those in the very active group (p = 0.012).ConclusionThe results suggest that high levels of PA have a beneficial effect on postprandial blood glucose profiles when compared to low and moderate levels of activity. 相似文献
102.
Anthony Minnema 《Al-Masaq: Islam & the Medieval Mediterranean》2019,31(1):1-19
In 1145–1146, Sayf al-Dawla returned to al-Andalus to create an independent kingdom and return the Banū Hūd of Zaragoza to prominence. His task was a difficult one, not least because he’d spent a decade serving the Christian king Alfonso VII. After a year of campaigning, Sayf al-Dawla secured a base of support in Murcia. However, he died shortly after his coronation in a battle with Christian allies who were allegedly sent by Alfonso to help him. In addition to providing an explanation for the battle and his death, the article examines how Sayf al-Dawla promoted the legitimacy of his state through his coinage, adherence to Andalusī traditions, and a network of fellow exiles. It interprets the Zaragozan ?ā’ifa as a moveable faction rather than a fixed geographical entity and connects Sayf al-Dawla’s kingdom to later movements to demonstrate how his actions preserved the Banū Hūd’s prestige in Andalusī imaginations. 相似文献
103.
104.
Outreach to research centers and institutes is often overlooked in academic libraries. This article discusses a needs assessment conducted by the Liaison Services Department at the University of Houston Libraries that reviewed library services to centers and institutes at the University of Houston's main campus. The assessment was conducted for two purposes: to build collaborations with centers and to determine how the libraries might create new services and/or market existing services to meet the centers and institutes' growing research needs. 相似文献
105.
106.
David Nicholas Anthony Watkinson Cherifa Boukacem‐Zeghmouri Blanca Rodríguez‐Bravo Jie Xu Abdullah Abrizah Marzena Świgoń Eti Herman 《Learned Publishing》2017,30(2):157-166
Early career researchers (ECRs) are of great interest because they are the new (and biggest) wave of researchers. They merit long and detailed investigation, and towards this end, this overarching paper provides a summary of the first‐year findings of a 3‐year, longitudinal study of 116 science and social science ECRs who have published nearly 1,200 papers and come from 7 countries and 81 universities. ECRs were interviewed in their own languages face‐to‐face, by Skype, or telephone. The study focused on the attitudes and behaviours of ECRs with respect to scholarly communications and the extent to which they are adopting new and disruptive technologies, such as social media, online communities, and Open Science. The main findings include: publishing in high‐impact factor journals is the only reputational game in town; online scholarly communities, and ResearchGate in particular, are gaining ground; social media are beginning to have an impact, especially in the dissemination arena; outreach activities have become more important; libraries are becoming increasingly invisible to ECRs; Open Science is not gaining traction; and more transformational ideas are being expressed, especially in the US and UK. 相似文献
107.
Heather B. Taylor Jason L. Anthony Rachel Aghara Karen E. Smith Susan H. Landry 《Early education and development》2008,19(1):188-207
This longitudinal study evaluated the extent to which maternal responsiveness across early childhood and children's cognitive skills predicted children's 8-year decoding and reading comprehension skills for children who varied in biological risk (term, n = 83; preterm, n = 155). Patterns of maternal responsiveness during infancy (6, 12, and 24 months) and preschool (3 and 4 years) revealed 4 maternal clusters that varied in consistency and level of maternal responsiveness. Although not predictive of decoding skills, the interaction between children's 4-year cognitive ability and maternal responsiveness cluster predicted children's reading comprehension skills at 8 years of age, regardless of risk. Although consistently high levels of maternal responsive parenting across early childhood related to literacy outcomes for all children in the study, responsive parenting had a stronger relation to later reading comprehension skills for children with lower cognitive abilities, particularly when mothers demonstrated high responsiveness in children's infancy. 相似文献
108.
D. Michael Malone 《Early Childhood Education Journal》2008,35(6):531-542
The purpose of this paper is to describe a Personal Learning Plan method used in undergraduate early childhood education courses
as a specific case of learner-centered, inquiry-based instruction. A rationale for this approach to instruction, the instructional
context in which the specific method was developed and used, the method framework (i.e., preliminary and final plans, activities,
products, and reflections), and the evaluation process will be discussed. Finally, a discussion of the perceived benefits
and challenges of the method as it has been implemented will be presented. 相似文献
109.
The effect of wheel running on the level and temporal distribution of schedule-induced polydipsia was examined in 12 food-deprived rats given one food pellet per minute for 1 h. For all rats, wheel running decreased the level of Polydipsie intake. It also decreased licking in all six of the 10-sec postpellet intervals except the first. The degree of reduction in licking was a U-shaped function of the 10-sec postpellet intervals and was generally inversely related to the temporal distribution of running. The temporal distribution data are partially consistent with a temporal competition view of the interactions between schedule-induced polydipsia and wheel running 相似文献
110.
动态在线讨论:交互式学习环境中的深层学习 总被引:3,自引:0,他引:3
本文阐述了在远程教育中进行面向深层学习的动态在线讨论的一个框架。该框架建立在信息、方法和认知等三个普遍性过程的基础上。在本框架中进行动态讨论的结构包括三种在线讨论的类型,即灵活的同伴、结构化的主题和协作性任务讨论。该框架在一门有关教学多媒体设计的在线研究生课程中使用过两个学期。创建动态讨论的策略是为了促进不同学习者之间的在线交互,并有助于设计能实现有效交互的任务。学生通过设计的任务产生了接受性学习,在此基础上促进了适应性学习,并且激发了他们促进深层学习的认知能力。该框架及动态讨论的策略提供了一个在线学习环境,在这样的环境中学生的学习超越了既定的课程目标。 相似文献