全文获取类型
收费全文 | 1387篇 |
免费 | 24篇 |
国内免费 | 1篇 |
专业分类
教育 | 1074篇 |
科学研究 | 92篇 |
各国文化 | 19篇 |
体育 | 96篇 |
综合类 | 1篇 |
文化理论 | 13篇 |
信息传播 | 117篇 |
出版年
2023年 | 4篇 |
2022年 | 20篇 |
2021年 | 29篇 |
2020年 | 38篇 |
2019年 | 40篇 |
2018年 | 55篇 |
2017年 | 72篇 |
2016年 | 70篇 |
2015年 | 38篇 |
2014年 | 41篇 |
2013年 | 283篇 |
2012年 | 44篇 |
2011年 | 37篇 |
2010年 | 41篇 |
2009年 | 28篇 |
2008年 | 44篇 |
2007年 | 39篇 |
2006年 | 32篇 |
2005年 | 36篇 |
2004年 | 38篇 |
2003年 | 28篇 |
2002年 | 29篇 |
2001年 | 22篇 |
2000年 | 21篇 |
1999年 | 18篇 |
1998年 | 12篇 |
1997年 | 8篇 |
1996年 | 10篇 |
1995年 | 9篇 |
1994年 | 13篇 |
1993年 | 16篇 |
1992年 | 8篇 |
1991年 | 10篇 |
1990年 | 13篇 |
1989年 | 13篇 |
1988年 | 7篇 |
1987年 | 15篇 |
1986年 | 5篇 |
1985年 | 15篇 |
1984年 | 8篇 |
1983年 | 5篇 |
1982年 | 6篇 |
1979年 | 8篇 |
1977年 | 6篇 |
1976年 | 10篇 |
1974年 | 4篇 |
1971年 | 4篇 |
1885年 | 5篇 |
1882年 | 4篇 |
1880年 | 5篇 |
排序方式: 共有1412条查询结果,搜索用时 15 毫秒
11.
12.
13.
Daan Van De Pol Sena Alaeikhanehshir Mario Maas P. Paul F.M. Kuijer 《Journal of sports sciences》2016,34(12):1141-1147
The prevalence of ischaemia-related symptoms is remarkably high among elite indoor volleyball players. Since the exposure to sport-specific demands may be higher in beach volleyball compared to indoor volleyball, the aim of this study was to assess the prevalence of ischaemia-related symptoms and associated risk factors among world-class beach volleyball players. Therefore, a questionnaire survey was performed among beach volleyball players active during the 2013 Grand Slam Beach Volleyball in the Netherlands. In total, 60 of the 128 beach volleyball players (47%) participated: 26 males and 34 females from 17 countries. The self-reported prevalence of cold or blue or pale digits in the dominant hand during or immediately after practice or competition was 38% (n = 23). Two risk factors were independently associated with symptoms of blue or pale digits: more than 14 years playing volleyball (odds ratio (OR) 4.42, 90% confidence interval (90% CI) 1.30–15.07) and sex (female) (OR 4.62, 90% CI 1.15–18.57). In conclusion, the prevalence of symptoms associated with digital ischaemia is high among international world-class beach volleyball players. Female sex and the length of the volleyball career were independently associated with an increased risk of ischaemia-related symptoms. The high prevalence of these seemingly innocuous symptoms and possible associated risk factors warrant regular monitoring since early detection can potentially prevent thromboembolic complications and irreversible tissue damage. 相似文献
14.
Jean P. Shipman Erica W. Lake Jessica Van Der Volgen Darrin Doman 《Journal of the Medical Library Association》2016,104(2):154-158
Purpose
The study evaluates how providers give patient education materials and identifies improvements to comply with Meaningful Use (MU) requirements.Methods
Thirty-eight patient-provider interactions in two health care outpatient clinics were observed.Results
Providers do not uniformly know MU patient education requirements. Providers have individual preferences and find gaps in what is available. Accessing and documenting patient education varies among providers. Embedded electronic health record (EHR) materials, while available, have technical access barriers.Conclusions
Providers'' EHR skills and knowledge levels contribute to non-standardized patient education delivery. 相似文献15.
Governmental consultation and advice on child abuse and neglect in the Netherlands started in 1972 as a two-year experiment with four offices for "confidential doctors" in four major cities of the country. After these two experimental years, a governmental institute for prevention of child abuse and neglect was organized. Over the ensuing decade the number of offices increased to ten, covering the whole country. The State Department of Welfare, Public Health, and Environment collected data from the confidential doctors and their coworkers every year. This study compares the data of the first year 1974 with those of 1983 in order to detect changing patterns over a 10-year period. The major changes are as follows: a threefold increase in cases, an extraordinary increase in cases of emotional maltreatment, an increase in detection of child fatalities but decrease in severity of physical abuse. Sexual abuse was hardly recognized in 1974 but gradually was recognized more frequently during the study decade and accounted for an alarming 7.2% of detected cases of maltreatment in 1983. No change was found in the social conditions of the family and the identity of the perpetrators--primarily fathers and/or mothers. A decrease was noted in the percentage of married parents. The increased percentage of single parents was primarily represented by mothers alone. An increase in the numbers of victims residing at home and a decrease in the need for children's homes as a temporary or permanent residence is attributed to aftercare. The discrepancy between the results of this voluntary notification system in the Netherlands and the results of a mandatory reporting system as used in the U.S.A. is still very high. The hope is that the government will decide to make reporting of maltreatment mandatory for everyone. 相似文献
16.
In this study the relationships between writing instruction and functional composition performance were analyzed. The data were obtained in a national assessment on the language proficiency of students in the third year of Dutch secondary education (age ±15). Multivariate multilevel analysis showed that 10 out of 36 instructional characteristics were related to functional composition performance. The effective instructional characteristics included: instruction and exercises in writing functional texts, writing for a specific purpose, tailoring to a particular audience, global rating of writing products by the teacher, and frequent evaluation of Dutch language proficiency through teacher-made tests and written assignments. No effects were found for the rather popular subskill exercises on idiom, syntax, spelling and punctuation, and for pre-writing activities, text revisions and peer-review. Furthermore, the effect of instructional characteristics was often different on one task than on another. Finally, there was little differential effectiveness for different groups of students. If one instructional characteristic was more effective than the other, this was generally true, to an equal degree, for boys and girls and for promoted and non-promoted students. 相似文献
17.
18.
Allan B. de Guzman Les Paul Valdez Maverick B. Orpiana Nikki Angela F. Orantia Patrick Van E. Oledan Karla Monica Cenido 《Educational gerontology》2017,43(7):329-340
According to Healthy People (2011), in order to understand the health concerns of the Lesbian, Gay, Bisexual, and Transgender (LGBT), the oppression and discrimination that they have faced must be scrutinized. Among the many issues they face, their estrangement experiences are one of the most understudied. However, little is known about how it is experienced by the gay elderly population, hence, this investigation. This grounded theory purports to describe the process by which estrangement is experienced among the Filipino gay older adults. Strauss and Corbin’s Grounded Theory (1990) design was utilized. A total of 10 gay older persons were purposively chosen to participate in semi-structured interviews. Field texts were subjected to thematic analysis involving open, axial, and selective coding. The study generated The Sailing Model of Estrangement. Remarkably, three phases relative to estrangement emerged, namely: sequestering, striving, and surviving. Primarily, the sequestering phase involves the gay persons’ need to express self, search for acceptance, and its subsequent reactions. The striving phase typifies the struggle in dealing with estrangement leading to either feelings of depression, remorse and shame or positivity, hopefulness, and motivation. Finally, in the surviving phase, gay persons may either feel contented and fulfilled or sad, lonely, and remorseful as they acquiesce aging with estrangement. Findings of the study offer an understanding of how Filipino gay older adults employ coping strategies in response to estrangement. 相似文献
19.
20.
González-Forte Juan Manuel Fernández Ceneida Van Hoof Jo Van Dooren Wim 《European Journal of Psychology of Education - EJPE》2020,35(3):549-565
European Journal of Psychology of Education - Understanding rational numbers is a complex task for primary and secondary school students. Previous research has shown that a possible reason is... 相似文献