全文获取类型
收费全文 | 10435篇 |
免费 | 135篇 |
国内免费 | 121篇 |
专业分类
教育 | 6665篇 |
科学研究 | 1254篇 |
各国文化 | 94篇 |
体育 | 1703篇 |
综合类 | 19篇 |
文化理论 | 70篇 |
信息传播 | 886篇 |
出版年
2022年 | 64篇 |
2021年 | 88篇 |
2020年 | 176篇 |
2019年 | 237篇 |
2018年 | 334篇 |
2017年 | 327篇 |
2016年 | 307篇 |
2015年 | 209篇 |
2014年 | 252篇 |
2013年 | 1689篇 |
2012年 | 228篇 |
2011年 | 238篇 |
2010年 | 206篇 |
2009年 | 220篇 |
2008年 | 197篇 |
2007年 | 196篇 |
2006年 | 211篇 |
2005年 | 180篇 |
2004年 | 381篇 |
2003年 | 354篇 |
2002年 | 338篇 |
2001年 | 403篇 |
2000年 | 237篇 |
1999年 | 160篇 |
1998年 | 104篇 |
1997年 | 85篇 |
1996年 | 92篇 |
1995年 | 108篇 |
1994年 | 104篇 |
1993年 | 75篇 |
1992年 | 148篇 |
1991年 | 119篇 |
1990年 | 133篇 |
1989年 | 148篇 |
1988年 | 105篇 |
1987年 | 129篇 |
1986年 | 114篇 |
1985年 | 132篇 |
1984年 | 117篇 |
1983年 | 114篇 |
1982年 | 91篇 |
1981年 | 76篇 |
1980年 | 86篇 |
1979年 | 126篇 |
1978年 | 80篇 |
1977年 | 70篇 |
1976年 | 83篇 |
1974年 | 72篇 |
1973年 | 64篇 |
1971年 | 61篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
Megan K. Schraedley Hamilton Bean Sarah E. Dempsey Mohan J. Dutta Kathleen P. Hunt Sonia R. Ivancic 《Journal of Applied Communication Research》2020,48(2):166-185
ABSTRACTThis forum brings together food, (in)security, and communication. The authors participating in this forum center communication as both process and tool for understanding, mitigating, and making meaning of food (in)security. The nine authors together discuss the role of communication in food (in)security, the central challenges for scholars and practitioners working on food (in)security, and the creative possibilities and impacts influencing the future of food (in)security. The forum produces a call for applied scholars to re-imagine communication frameworks in order to make meaningful differences in their communities. 相似文献
2.
Peijie Chen Lijuan Mao George P.Nassis Peter Harmer Barbara E.Ainsworth Fuzhong Li 《运动与健康科学(英文)》2020,9(2):103-104
The on-going Coronavirus disease(COVID-19)outbreak in China has become the world's leading health headline and is causing major panic and public concerns.On January 30,2020,the World Health Organization(WHO)declared that the new coronavirus outbreak is a public health emergency of international concern.1 The virus has already had a direct impact on more than 10 million people in the city of Wuhan and has reached other parts of China as well,posing a health threat of unknown magnitude globally.As of February 8,2020,WHO reported 34,886 confirmed cases of COVID-19 globally,with 34,589 of them occurring in China(including 6101 severe cases and 723 deaths).A total of 288 other confirmed cases(with 1 death)have been reported in 24 countries,including Japan,Australia,Germany,and United States.2 However,these daily estimates are expected to rise even higher as reports from health authorities in China3 are gathered and near real-time updates of the Johns Hopkins virus dashboard are made 4 The outbreak has caused governments in various countries to take swift and protective measures.In China,these included putting cities on lockdown,5 implementing travel wamings/bans and cancellations,6 extending national holidays,and closing schools and postponing classes7. 相似文献
3.
Fernandez Frank Baker David P. Fu Yuan-Chih Muñoz Ismael G. Ford Karly Sarita 《Minerva》2021,59(1):79-98
Minerva - Over the course of the 20th century, unprecedented growth in scientific discovery was fueled by broad growth in the number of university-based scientists. During this period the American... 相似文献
4.
5.
6.
Research remains unclear on the impact of physiological load on perceptual-cognitive skills in sport. Moreover, no study has examined the training of perceptual-cognitive skills under physiological load. The current study comprised two phases. Firstly, we examined the impact of badminton-specific physiological load on anticipatory skills in expert badminton players (n = 13), including key underlying mechanisms, such as gaze behaviour. Under high physiological load, participants displayed less efficient visual search behaviour and showed a reduction in response accuracy. Secondly, we examined the effects of combining perceptual-cognitive simulation training with the high physiological load. Ten of the expert badminton players were assigned to a combined training group, where the simulation training and the physiological load intervention occurred simultaneously or an independent training group, whereby the two components were completed independently. The combined training group showed a positive change in the efficiency of their visual search behaviours compared to the independent training group, but no significant performance improvements were found. Overall, findings demonstrate that high physiological load is detrimental to experts’ anticipatory skills. However, combining perceptual-cognitive simulation training with high physiological load can potentially negate these debilitating effects. 相似文献
7.
8.
Rebecca L. P. Jordan Justin Garwood Woodrow Trathen 《Learning disabilities research & practice》2019,34(4):185-193
In an era of teacher quality reforms, one overlooked area for assessing readiness for teaching is education majors’ self‐efficacy for teaching reading. This gap is unfortunate, as teaching reading is a common responsibility among general and special education teachers. In the current push for RTI—one in which more general education teachers are increasingly called upon to provide reading support to students with learning disabilities, in addition to the support received from special educators—it is important to determine preservice teachers’ self‐efficacy for teaching reading. Self‐efficacy is an important construct to consider as it is related to eventual teacher attrition. The purpose of the current study was to develop a scale to measure elementary and special education majors’ self‐efficacy for teaching reading. With a sample of 110 education majors, a three‐factor scale was developed and demonstrated strong psychometric properties. Implications for the future of teacher education programs are discussed. 相似文献
9.
ABSTRACTThe interpretation and reuse of previous design solutions, or precedents, is central to design. This paper describes qualitative research conducted over three years at two institutions, aimed at investigating the role of design knowledge re-use in project-based mechanical design courses. Research data were collected through participant observation, student interviews, anonymous questionnaires, and website analytics. The paper identifies challenges that must be addressed in order to support novice engineers in rehearsing the types of knowledge required to successfully reason about and engage with design precedents. Two categories of design precedents are identified: concept precedents and detail precedents. Providing students with access to the latter is identified as a particular challenge, as is providing students with access to engineering communities of practice. Approaches to addressing these challenges are discussed. 相似文献
10.
Rebeca Fernandes Ferreira Lima Marcela Raffaelli Normanda Araujo de Morais Juliana P. Santana Carlos J. Nieto Silvia H. Koller 《Child development》2020,91(4):1237-1253
Trajectories of adjustment were examined in a sample of street-involved youth across a 1-year period. Participants (N = 113; Mage = 14.18 years; 80.5% male, 91% non-White) were recruited in three Brazilian cities. Interviews conducted at three time points included six measures of physical and psychological adjustment. Unconditional growth models revealed linear declines over time (i.e., improved adjustment) on three indicators: health symptoms, sexual risk behaviors, and negative affect. There were no linear changes in drug use, positive affect, or life satisfaction. Conditional growth models revealed few significant effects for age or gender, but ratings of stressful life events moderated longitudinal changes in health symptoms, drug use, and negative affect. Implications for practice, policy, and theory are discussed. 相似文献