全文获取类型
收费全文 | 3462篇 |
免费 | 78篇 |
国内免费 | 2篇 |
专业分类
教育 | 2806篇 |
科学研究 | 100篇 |
各国文化 | 41篇 |
体育 | 156篇 |
文化理论 | 16篇 |
信息传播 | 423篇 |
出版年
2022年 | 16篇 |
2021年 | 34篇 |
2020年 | 61篇 |
2019年 | 97篇 |
2018年 | 107篇 |
2017年 | 134篇 |
2016年 | 109篇 |
2015年 | 84篇 |
2014年 | 87篇 |
2013年 | 845篇 |
2012年 | 87篇 |
2011年 | 99篇 |
2010年 | 84篇 |
2009年 | 85篇 |
2008年 | 103篇 |
2007年 | 104篇 |
2006年 | 80篇 |
2005年 | 78篇 |
2004年 | 82篇 |
2003年 | 66篇 |
2002年 | 73篇 |
2001年 | 57篇 |
2000年 | 59篇 |
1999年 | 62篇 |
1998年 | 41篇 |
1997年 | 61篇 |
1996年 | 42篇 |
1995年 | 43篇 |
1994年 | 44篇 |
1993年 | 43篇 |
1992年 | 36篇 |
1991年 | 35篇 |
1990年 | 29篇 |
1989年 | 31篇 |
1988年 | 24篇 |
1987年 | 18篇 |
1986年 | 27篇 |
1985年 | 35篇 |
1984年 | 28篇 |
1983年 | 31篇 |
1982年 | 25篇 |
1981年 | 17篇 |
1980年 | 27篇 |
1979年 | 23篇 |
1978年 | 25篇 |
1977年 | 21篇 |
1976年 | 17篇 |
1974年 | 12篇 |
1973年 | 12篇 |
1971年 | 12篇 |
排序方式: 共有3542条查询结果,搜索用时 31 毫秒
91.
Mary M. Atwater 《科学教学研究杂志》1996,33(8):821-837
This article focuses on (a) theoretical underpinnings of social constructivism and multicultural education and (b) aspects of social constructivism that can provide frameworks for research in multicultural science education. According to the author, multicultural science education is “a field of inquiry with constructs, methodologies, and processes aimed at providing equitable opportunities for all students to learn quality science.” Multicultural science education research continues to be influenced by class, culture, disability, ethnicity, gender, and different lifestyles; however, another appropriate epistemology for this area of research is social constructivism. The essence of social constructivism and its implications for multicultural science education research includes an understanding of whatever realities might be constructed by individuals from various cultural groups and how these realities can be reconstituted, if necessary, to include a scientific reality. Hence, multicultural science education should be a field of study in which many science education researchers are generating new knowledge. The author strives to persuade other researchers to expand their research and teaching efforts into multicultural science education, a blending of social constructivism with multicultural science education. This blending is illustrated in the final section of this article. © 1996 John Wiley & Sons, Inc. 相似文献
92.
Fourth-grade follow-up achievement outcome data of placed and nonplaced transition extra-year school readiness samples indicate a nonsignificant standardized score difference, as noted in the second-grade findings. New analysis of correlation data indicates that within-sample age distribution shows a positive correlation with standardized achievement test scores in a study sample of non-at-risk students nonretained or recommended for retention. This age-achievement correlation is strong in kindergarten, with decreased effects by second and fourth grade. Four study samples of at-risk students (students retained in a transition extra-year school readiness program, students recommended and eligible for such placement but not placed, students retained in kindergarten through second grade, and students held out of school prior to kindergarten) reflect moderate inverse (negative) correlations between age and achievement test scores, with increasing inverse effects in fourth grade. Effect analysis and implications are discussed. © 1996 John Wiley & Sons, Inc. 相似文献
93.
Kelsey H.Collins Graham Z.MacDonald David A.Hart Ruth A.Seerattan Jaqueline L.Rios Raylene A.Reimer Walter Herzog 《运动与健康科学(英文)》2020,9(2):132-139,197
Background:Osteoarthritis is one of the leading causes of pain and disability worldwide,and a large percentage of patients with osteoarthritis are individuals who are also obese.In recent years,a series of animal models have demonstrated that obesity-inducing diets can result in synovial joint damage(both with and without the superimposition of trauma),which may be related to changes in percentage of body fat and a series of low-level systemic inflammatory mediators.Of note,there is a disparity between whether the dietary challenges commence at weaning,representing a weanling onset,or at skeletal maturity,representing an adult onset of obesity.We wished to evaluate the effect ofthe dietary exposure time and the age at which animals are exposed to a high-fat and high-sucrose(HFS) diet to determine whether these factors may result in disparate outcomes,as there is evidence suggesting that these factors result in differential metabolic disturbances.Based on dietary exposure time,we hypothesized that rats fed an HFS diet for 14 weeks from weaning(HFS Weanling) would demonstrate an increase in knee joint damage scores,whereas rats exposed to the HFS diet for 4 weeks,starting at 12 weeks of age(HFS Adult) and rats exposed to a standard chow diet(Chow)would not display an increase in knee joint damage scores.Methods:Male Sprague-Dawley rats were fed either an HFS diet for 14 weeks from weaning(HFS Weanling) or an HFS diet for 4 weeks,starting at 12 weeks of age(HFS Adult).At sacrifice,joints were scored using the modified Mankin Criteria,and serum was analyzed for a defined subset of inflammatory markers(Interleukin-6,leptin,monocyte chemoattractant protein-1,and tumor necrosis factorα).Results:When the HFS Weanling and HFS Adult groups were compared,both groups had a similar percent of body fat,although the HFS Weanling group had a significantly greater body mass than the HFS Adult group.The HFS Weanling and HFS Adult animals had a significant increase in body mass and percentage of body fat when compared to the Chow group.Although knee joint damage scores were low in all 3 groups,we found,contrary to our hypothesis,that the HFS Adult group had statistically significant greater knee joint damage scores than the Chow and HFS Weanling groups.Furthermore,we observed that the HFS Weanling group did not have significant differences in knee joint damage scores relative to the Chow group.Conclusion:These findings indicate that the HFS Weanling animals were better able to cope with the dietary challenge of an HFS diet than the HFS Adult group.Interestingly,when assessing various serum proinflammatory markers,no significant differences were detected between the HTS Adult and HFS Weanling groups.Although details regarding the mechanisms underlying an increase in knee joint damage scores in the HFS Adult group remain to be elucidated,these findings indicate that dietary exposure time maybe less important than the age at which an HFS diet is introduced.Moreover,increases in serum proinflammatory mediators do not appear to be directly linked to knee joint damage scores in the HFS Weanling group animals but may be partially responsible for the observed knee joint damage in the adults over the very short time of exposure to the HFS diet. 相似文献
94.
Graham Smith 《Soccer & Society》2019,20(1):61-85
It is generally acknowledged that expatriate British players and coaches were instrumental in soccer’s radiant global diffusion and that different technical and tactical emphases developed according to particular geographical locations and cultural milieu. As the twentieth century unfolded, the trend reversed with increased inward flows of elite foreign playing and coaching labour challenging the distinctive and erstwhile dominant occupational culture of the English game. This paper explores the dynamics and tensions of subcultural modification and adaptation at the British: migrant coaching talent interface. Owing to issues associated with access, the occupational subculture of elite-level football is impenetrable to most researchers. Previous employment in professional soccer allowed this author to overcome such impediments, permitting access to a range of high-status national and international players and coaches (n = 25) affecting and affected by occupational subcultural change. This enabled a distinctive research platform combining insider knowledge and grounded experience with academic orthodoxy. The paper is built upon primary data collected in semi-structured interviews and critical analysis of emerging themes. In doing so, it offers a fresh dimension to understanding the impact of globalization on elite professional English soccer. Key findings indicated the opinion of British coaches on the impact of this foreign influx polarized. Although many demonstrated an enlightened standpoint, adopting innovative practices introduced by overseas coaching talent, these views were counter-balanced by evidence of a myopic arrogance bordering on xenophobic resistance to change in what now has to be considered the global rather than the ‘English’ game. 相似文献
95.
96.
Todd L. Sandel Richard Buttny Mary Varghese 《Journal of Intercultural Communication Research》2019,48(1):52-71
Students were linked virtually across three contexts: U.S., Malaysia, and China. Differences emerged in how student-created messages were constructed and interpreted; these impacted perceived relational affiliation. Messages constructed by students in Malaysia and China exhibited casual talk, greater self-disclosure, requests for personal information, and greater use of emoticons/emoji. Interactions were perceived as informal, friendly, and positive. U.S. students’ messages often showed institutional talk, less self-disclosure, and more attention to the instructor-assigned task. Asian-U.S. student pairs perceived their interactions as formal, less friendly, and less positive. This study shows how online technologies may be afforded and shaped by culture and interaction. 相似文献
97.
Ben L. Langdown Jack E.T. Wells Sean Graham Matt W. Bridge 《Journal of sports sciences》2019,37(6):656-664
Previous research has highlighted the positive effect that different warm-up protocols have on golf performance (e.g. Sorbie et al., 2016; Tilley & Macfarlane, 2012) with the design of warm-ups and programmes targeting and improving golf performance through the activation and development of specific muscle groups. This study aimed to examine the acute effects of two warm-up protocols on golf drive performance in comparison to a control condition. Using a randomised counterbalanced design over three testing sessions, twenty-three highly skilled golfers completed the control, dynamic and resistance-band warm-up conditions. Following each condition, a GC2 launch monitor was used to record ball velocity and other launch parameters of ten shots hit with the participants’ own driver. A repeated-measures ANOVA found significant increases in ball velocity (ηp2 = .217) between the control and both the dynamic and resistance-band warm-up conditions but no difference between these latter two, and a reduction in launch angle between control and dynamic conditions. The use of either a dynamic stretching or resistance-band warm-up can have acute benefits on ball velocity but golfers should liaise with a PGA Professional golf coach to effectively integrate this into their golf driving performance. 相似文献
98.
99.
Mary Grace Antony Ryan J. Thomas 《Journal of International and Intercultural Communication》2017,10(1):4-24
The recent migration of 65,000 children across the southwestern border, coupled with allegations of abuse by the U.S. Border Patrol, enables the investigation of an overlooked immigrant category: the unaccompanied youth migrant. Analyzing audience responses to news reports of the abuse, we find that established disparaging immigrant tropes apply, describing the children as an economic burden, disease carriers, and offspring of irresponsible families. We uncover two new themes: Youth migrants are channels whereby criminals may infiltrate the U.S., and manipulate legal authorities to remain in the U.S. Finally, we demonstrate how global compassion is strategically deployed to qualify harsh retaliatory measures. 相似文献
100.