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241.
本文对安徽皖南及周边地区蕴藏的丰富的紫砂矿资源通过实地调查,证明安徽皖南及周边地区紫砂矿源储量丰富,并对紫砂土做过多次化学分析,取得化验报告,证实皖南及周边地区蕴藏的紫砂土质量上乘,是生产紫砂陶艺的上等原材料。该文还对皖南及周边地区紫砂土的特性在生产紫砂陶加工工艺及泥土配方进行了深入的探究,提岀了具体的配方比例要求和工艺流程。本文作者杨绎成先生原是安徽省紫砂陶项目研究领军人物,有着丰富的第一手资料和生产经验。 相似文献
242.
随着信息技术的迅速发展,计算机和网络在考试管理中的应用逐步深入,考试管理中出现了网络化考试形式。网络化考试具有组织管理高效、考试时间灵活、监考难度较小、组考成本较低等特点,在多方面给考试管理带来更为深刻的影响,要求考试管理机构做出相应变革,以便适应考试自身发展的需要。 相似文献
243.
通过实验法等研究方法对某省皮划艇队6名运动员进行冬季水上多级递增负荷测试,对测试结果进行了统计分析,研究认为该队的基本能力和专项技术还有待提高,并提出了改进的建议。 相似文献
244.
运用文献资料、实地考察、专家访谈等方法,在回顾我国学生体质健康评价制度的基础上,对当前学生体测过程中从所涉及的思想认识问题、体测过程问题、体测内容问题、数据总结与反馈问题进行分析,从宣传与引导、监督与核查、反馈与总结、体测过程管理、理论研究五个方面提出了相关改进意见。旨在不断提高体测工作水平,更好地发挥《国家学生体质健康标准》对学校体育的监督和引导作用。 相似文献
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Maurizio Fanchini Carlo Castagna Aaron J. Coutts Federico Schena Alan McCall Franco M. Impellizzeri 《Journal of sports sciences》2014,32(20):1950-1957
AbstractThe aim of this study was to compare the reliability, internal responsiveness and interchangeability of the Yo-Yo intermittent recovery test level 1 (YY1), level 2 (YY2) and submaximal YY1 (YY1-sub). Twenty-four young soccer players (age 17 ± 1 years; height 177 ± 7 cm; body mass 68 ± 6 kg) completed each test five times within pre- and in-season; distances covered and heart rates (HRs) were measured. Reliability was expressed as typical error of measurement (TEM) and intraclass correlation coefficient (ICC). Internal responsiveness was determined as effect size (ES) and signal-to-noise ratio (ESTEM). Interchangeability was determined with correlation between training-induced changes. The TEM and ICC for distances in the YY1 and YY2 and for HR in YY1-sub were 7.3% and 0.78, 7.1% and 0.93 and 2.2% and 0.78, respectively. The ESs and ESTEMs were 0.9 and 1.9 for YY1, 0.4 and 1.2 for YY2 and ?0.3 and ?0.3 for YY1-sub. Correlations between YY1 vs. YY2 and YY1-sub were 0.56 to 0.84 and ?0.36 to ?0.81, respectively. Correlations between change scores in YY1 vs. YY2 were 0.29 and ?0.21 vs. YY1-sub. Peak HR was higher in YY1 vs. YY2. The YY1 and YY2 showed similar reliability; however, they were not interchangeable. The YY1 was more responsive to training compared to YY2 and YY1-sub. 相似文献
247.
基于流水阅卷具有高效、高质量、公平等优点,对高校数学基础课程考试采用流水阅卷的实施办法进行改革,通过实践证实效果良好。 相似文献
248.
Abstract The aims of this study were two-fold: (1) to consider the criterion-related validity of the multi-stage fitness test (MSFT) by comparing the predicted maximal oxygen uptake ([Vdot]O2max) and distance travelled with peak oxygen uptake ([Vdot]O2peak) measured using a wheelchair ergometer (n = 24); and (2) to assess the reliability of the MSFT in a sub-sample of wheelchair athletes (n = 10) measured on two occasions. Twenty-four trained male wheelchair basketball players (mean age 29 years, s = 6) took part in the study. All participants performed a continuous incremental wheelchair ergometer test to volitional exhaustion to determine [Vdot]O2peak, and the MSFT on an indoor wooden basketball court. Mean ergometer [Vdot]O2peak was 2.66 litres · min?1 (s = 0.49) and peak heart rate was 188 beats · min?1 (s = 10). The group mean MSFT distance travelled was 2056 m (s = 272) and mean peak heart rate was 186 beats · min?1 (s = 11). Low to moderate correlations (ρ = 0.39 to 0.58; 95% confidence interval [CI]: ?0.02 to 0.69 and 0.23 to 0.80) were found between distance travelled in the MSFT and different expressions of wheelchair ergometer [Vdot]O2peak. There was a mean bias of ?1.9 beats · min?1 (95% CI: ?5.9 to 2.0) and standard error of measurement of 6.6 beats · min?1 (95% CI: 5.4 to 8.8) between the ergometer and MSFT peak heart rates. A similar comparison of ergometer and predicted MSFT [Vdot]O2peak values revealed a large mean systematic bias of 15.3 ml · kg?1 · min?1 (95% CI: 13.2 to 17.4) and standard error of measurement of 3.5 ml · kg?1 · min?1 (95% CI: 2.8 to 4.6). Small standard errors of measurement for MSFT distance travelled (86 m; 95% CI: 59 to 157) and MSFT peak heart rate (2.4 beats · min?1; 95% CI: 1.7 to 4.5) suggest that these variables can be measured reliably. The results suggest that the multi-stage fitness test provides reliable data with this population, but does not fully reflect the aerobic capacity of wheelchair athletes directly. 相似文献
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250.
Test-taking is an emotion-laden event for many students. Typically, negative emotions are highest at the start of an examination and are replaced by positive emotions as the exam progresses. The impact of computer-based testing and immediate score reporting on students' emotions has not been examined. In Study 1, we evaluated university students’ emotions at the end of a computer-based exam and found positive emotions more strongly endorsed than negative. In Study 2, we replicated this finding and used a quasi-experimental pre-post design to examine how emotions changed in response to real examination scores. Exam scores presented immediately had significant positive effects on relief, pride, and hope and negative effects on anxiety and shame even after controlling for the corresponding emotion at the end of the exam. The one exception was anger, which was not impacted by examination score. No interaction effects were found. 相似文献