全文获取类型
收费全文 | 1617篇 |
免费 | 46篇 |
国内免费 | 2篇 |
专业分类
教育 | 1132篇 |
科学研究 | 126篇 |
各国文化 | 23篇 |
体育 | 153篇 |
文化理论 | 17篇 |
信息传播 | 214篇 |
出版年
2023年 | 11篇 |
2022年 | 16篇 |
2021年 | 21篇 |
2020年 | 44篇 |
2019年 | 82篇 |
2018年 | 86篇 |
2017年 | 86篇 |
2016年 | 66篇 |
2015年 | 40篇 |
2014年 | 53篇 |
2013年 | 364篇 |
2012年 | 50篇 |
2011年 | 52篇 |
2010年 | 27篇 |
2009年 | 22篇 |
2008年 | 32篇 |
2007年 | 26篇 |
2006年 | 25篇 |
2005年 | 26篇 |
2004年 | 25篇 |
2003年 | 22篇 |
2002年 | 23篇 |
2001年 | 18篇 |
2000年 | 23篇 |
1999年 | 17篇 |
1998年 | 15篇 |
1997年 | 16篇 |
1996年 | 20篇 |
1995年 | 19篇 |
1994年 | 12篇 |
1993年 | 19篇 |
1992年 | 11篇 |
1991年 | 20篇 |
1990年 | 24篇 |
1989年 | 12篇 |
1988年 | 13篇 |
1986年 | 14篇 |
1985年 | 13篇 |
1984年 | 12篇 |
1983年 | 11篇 |
1982年 | 7篇 |
1981年 | 11篇 |
1979年 | 9篇 |
1977年 | 10篇 |
1976年 | 11篇 |
1975年 | 6篇 |
1974年 | 10篇 |
1973年 | 6篇 |
1969年 | 8篇 |
1890年 | 7篇 |
排序方式: 共有1665条查询结果,搜索用时 15 毫秒
1.
Amy Pace Rufan Luo Dani Levine Aquiles Iglesias Jill de Villiers Roberta M. Golinkoff Mary S. Wilson Kathy Hirsh-Pasek 《Child development》2021,92(1):35-53
This study investigated the relation between Dual Language Learners’ (N = 90) vocabulary and grammar comprehension and word learning processes in preschool (aged 3-through-5 years). Of interest was whether: (a) performance in Spanish correlated with performance in English within each domain; and (b) comprehension predicted novel word learning within and across languages. Dual-language experience was evaluated as a potential moderator. Hierarchical linear modeling revealed stronger predictive associations within each language than across languages. Across languages, results varied by experience and domain. Structural sensitivity theory suggests exposure to two languages heightens awareness of parameters along which languages vary and provides a framework for interpreting complex associations within and across languages. Knowledge from one language may influence learning in both. 相似文献
2.
Julia Iaconisi Friederike Hasselblatt Benjamin Mayer Michael Schoen Tobias Maria Böckers Anja Böckers 《Anatomical sciences education》2019,12(4):386-398
While most German anatomy institutes provide only limited information about body donors and their lives, students have expressed a desire to learn more about these individuals, especially about their motivations to donate their bodies for the sake of medical education. In order to gratify this wish, as well as to further humanize body donors, an educational film was compiled, and a study designed to capture the film's effects on medical students. This is the first study using standardized, validated psychological tools to evaluate the impact of an educational film about body donors on students’ empathy and psychological stress levels. The study followed a longitudinal, controlled, and cluster randomized design, including 77 (48 females/29 males) participants who watched the video either before, midway, or after the dissection course. Questionnaires were completed at four points in time applying the Jefferson Scale for Empathy (JSPE-S) and the Interpersonal Reactivity Index (IRI) to measure empathy. Psychological stress levels were recorded by the Brief Symptom Inventory (BSI). Overall, students recommended the film to be shown to all students (median 6.0; maximum on the six-point Likert scale). Viewing the film revealed no significant changes between study groups or over time in JSPE-S sum scores. All groups demonstrated a significant reduction of BSI values before the dissection course actually started and increased values during the course, but both developments appeared not to be associated with the intervention. Overall, the educational film did not correlate with any negative effects on students’ empathy and psychological stress levels, and it was strongly approved of by students, as it provided more humanizing personal information about body donors without violating their anonymity. 相似文献
3.
Benjamin Gonzalez O’Brien Elizabeth Hurst Loren Collingwood 《Mass Communication and Society》2019,22(6):756-778
The refugee sanctuary movement in the United States has shifted to include undocumented immigrants fleeing violence and economic strife. Given the negative tenor of coverage of undocumented immigration, and ties between framing and policy views on immigration, how the media frames sanctuary cities is likely to impact public perceptions of these cities and their policies. To assess media coverage of sanctuary policies, we analyzed articles from five national newspapers from 1980 to 2017 with both human content analysis and dictionary-based computational analysis. We find that framing around religion/morality and conflict has decreased, while stories focusing on crime and partisanship have increased. We discuss implications for public opinion and the likelihood that the American public will take their cues from media framing and elite discourse when it comes to sanctuary policies. 相似文献
4.
Victoria A. Roach Graham M. Fraser James H. Kryklywy Derek G.V. Mitchell Timothy D. Wilson 《Anatomical sciences education》2019,12(1):32-42
Research suggests that spatial ability may predict success in complex disciplines including anatomy, where mastery requires a firm understanding of the intricate relationships occurring along the course of veins, arteries, and nerves, as they traverse through and around bones, muscles, and organs. Debate exists on the malleability of spatial ability, and some suggest that spatial ability can be enhanced through training. It is hypothesized that spatial ability can be trained in low-performing individuals through visual guidance. To address this, training was completed through a visual guidance protocol. This protocol was based on eye-movement patterns of high-performing individuals, collected via eye-tracking as they completed an Electronic Mental Rotations Test (EMRT). The effects of guidance were evaluated using 33 individuals with low mental rotation ability, in a counterbalanced crossover design. Individuals were placed in one of two treatment groups (late or early guidance) and completed both a guided, and an unguided EMRT. A third group (no guidance/control) completed two unguided EMRTs. All groups demonstrated an increase in EMRT scores on their second test (P < 0.001); however, an interaction was observed between treatment and test iteration (P = 0.024). The effect of guidance on scores was contingent on when the guidance was applied. When guidance was applied early, scores were significantly greater than expected (P = 0.028). These findings suggest that by guiding individuals with low mental rotation ability “where” to look early in training, better search approaches may be adopted, yielding improvements in spatial reasoning scores. It is proposed that visual guidance may be applied in spatial fields, such as STEMM (science, technology, engineering, mathematics and medicine), surgery, and anatomy to improve student's interpretation of visual content. Anat Sci Educ. © 2018 American Association of Anatomists. 相似文献
5.
Ethics and Information Technology - Developing and implementing artificial intelligence (AI) systems in an ethical manner faces several challenges specific to the kind of technology at hand,... 相似文献
6.
PurposeThe aim of this study was to evaluate the efficacy of a 17-week, 3-component lifestyle intervention for enhancing health behaviors during the coronavirus disease 2019 (COVID-19) pandemic.MethodsA parallel-group (intervention and control) study was conducted amongst 79 airline pilots over a 17-week period during the COVID-19 pandemic. The intervention group (n = 38) received a personalized sleep, dietary, and physical activity (PA) program. The control group (n = 41) received no intervention. Outcome measures for sleep, fruit and vegetable intake, PA, and subjective health were measured though an online survey before and after the 17-week period. The changes in outcome measures were used to determine the efficacy of the intervention.ResultsSignificant main effects for time × group were found for International Physical Activity Questionnaire-walk (p = 0.02) and for all other outcome measures (p < 0.01). The intervention group significantly improved in sleep duration (p < 0.01; d = 1.35), Pittsburgh Sleep Quality Index score (p < 0.01; d = 1.14), moderate-to-vigorous PA (p < 0.01; d = 1.44), fruit and vegetable intake (p < 0.01; d = 2.09), Short Form 12v2 physical score (p < 0.01; d = 1.52), and Short Form 12v2 mental score (p < 0.01; d = 2.09). The control group showed significant negative change for sleep duration, Pittsburgh Sleep Quality Index score, and Short Form 12v2 mental score (p < 0.01).ConclusionResults provide preliminary evidence that a 3-component healthy sleep, eating, and PA intervention elicit improvements in health behaviors and perceived subjective health in pilots and may improve quality of life during an unprecedented global pandemic. 相似文献
7.
Elysia Poggi Davis Benjamin L. Hankin Laura M. Glynn Kevin Head Dae Jin Kim Curt A. Sandman 《Child development》2020,91(2):e432-e450
Prenatal maternal stress predicts subsequent elevations in youth depressive symptoms, but the neural processes associated with these links are unclear. This study evaluated whether prenatal maternal stress is associated with child brain development, and adolescent depressive symptoms using a prospective design with 74 mother child pairs (40 boys). Maternal stress was assessed during pregnancy, child cortical thickness at age 7, and depressive symptoms at age 12. Prenatal maternal stress was associated with less cortical thickness primarily in frontal and temporal regions and with elevated depressive symptoms; child cortical thickness additionally correlated with adolescent depressive symptoms. The observed associations are consistent with the possibility that cortical thickness in superior frontal regions links associations between prenatal maternal stress and adolescent depressive symptoms. 相似文献
8.
Marian Reiff Meeta Kumar Batsirai Bvunzawabaya Soumya Madabhushi Alaina Spiegel Benjamin Bolnick 《Journal of College Student Psychotherapy》2019,33(2):107-130
Addressing the need for suicide prevention on campus, I CARE training, developed and facilitated by counseling center clinicians, trains students, staff, and faculty to provide support to students experiencing distress or mental health problems. We assessed its impact using a mixed-methods approach. Quantitative analyses demonstrated significant increases in knowledge of intervention skills and readiness to intervene from pretraining to posttraining. Knowledge and readiness remained significantly higher than preworkshop for the entire follow-up evaluation period, extending 15 months posttraining. Qualitative analyses revealed the value of experiential activities and emotional processing in increasing participants’ comfort and preparedness to intervene in challenging situations. 相似文献
9.
Shelley A. Riggs Kellye S. Carver Daniel Romero Sandra B. Morissette Jamie Wilson Robyn Campbell James McGuffin 《Journal of College Counseling》2019,22(2):110-124
This study examined attachment processes of college student veterans and nonveterans and further examined how veteran status and attachment style directly and indirectly predict relationship functioning. Results indicated that student veterans were more often dismissing in their attachment style but less often preoccupied than nonveteran students. Veteran status moderated the association between attachment style and dyadic consensus. The contributions of attachment and communication processes to overall relationship adjustment differed for student veterans and nonveterans. 相似文献
10.
Benjamin Burroughs 《Popular Communication》2019,17(1):1-17
This article focuses on the emergence of a nascent streaming industry. The media industry studies conceptualization of “industry lore” can be read during times of transition for media industries. Streaming lore is a re-articulation of existing industry lore accompanying the advent of streaming technology and distribution. Contemporary streaming acts as a site of rupture, wherein industry discourses related to digital media are rendered visible. The article proposes three categories of emergent streaming lore and analyzes their relation to a growing streaming media industry. These categories include (a) Netflix as “quality” streams, (b) the algorithmic audience, and (c) cord-cutters and cord-nevers. 相似文献