全文获取类型
收费全文 | 292篇 |
免费 | 5篇 |
国内免费 | 12篇 |
专业分类
教育 | 209篇 |
科学研究 | 62篇 |
体育 | 5篇 |
综合类 | 13篇 |
文化理论 | 2篇 |
信息传播 | 18篇 |
出版年
2023年 | 2篇 |
2022年 | 6篇 |
2021年 | 8篇 |
2020年 | 7篇 |
2019年 | 1篇 |
2018年 | 1篇 |
2017年 | 2篇 |
2016年 | 4篇 |
2015年 | 5篇 |
2014年 | 19篇 |
2013年 | 18篇 |
2012年 | 22篇 |
2011年 | 20篇 |
2010年 | 13篇 |
2009年 | 23篇 |
2008年 | 20篇 |
2007年 | 23篇 |
2006年 | 35篇 |
2005年 | 16篇 |
2004年 | 15篇 |
2003年 | 10篇 |
2002年 | 7篇 |
2001年 | 8篇 |
2000年 | 3篇 |
1998年 | 3篇 |
1997年 | 2篇 |
1994年 | 1篇 |
1993年 | 3篇 |
1992年 | 2篇 |
1991年 | 2篇 |
1990年 | 2篇 |
1989年 | 2篇 |
1988年 | 1篇 |
1986年 | 1篇 |
1984年 | 2篇 |
排序方式: 共有309条查询结果,搜索用时 0 毫秒
91.
何秋霞 《中国科教创新导刊》2012,(29):240-240
朋友在一个人生命中是不可或缺的人物,真正的朋友可以在难过时分担忧伤,开心时分享快乐.本文主要阐述了当前大学生交友过程中容易形成的误区,并引导他们要走出交友的误区,交上真正的朋友. 相似文献
92.
小型语料库和大型语料库的结合能使教师从英语学习者的共性中找到适合本校英语学习者的具体特点。以语料库为手段对大学生不同学习阶段的英语作文中的错误进行分析,对于把握学习者在不同学习阶段中的写作错误的共性和规律有重要意义,从而进行针对教学。 相似文献
93.
一种基于单片机的智能电子天平系统 总被引:1,自引:0,他引:1
介绍了一种基于80C31处理器的智能电子天平系统的工作原理,包括系统的硬件原理及软件流程框图,并较系统地进行了误差分析。本系统应用了电磁力反馈平衡零位法原理,采用单片微处理器进行实时控制和数据处理,实现了天平的电子化、数字化、智能化。 相似文献
94.
Reversible variable length codes (RVLCs) have received much attention due to their excellent error resilient capabilities. In this paper, a novel construction algorithm for symmetrical RVLC is proposed which is independent of the Huffman code. The proposed algorithm's codeword assignment is only based on symbol occurrence probability. It has many advantages over symmetrical construction algorithms available for easy realization and better code performance. In addition, the proposed algorithm simplifies the codeword selection mechanism dramatically. 相似文献
95.
In this work, we present an evaluation of the performance and error robustness of RTP-based broadcast streaming of high-quality high-definition (HD) H.264/AVC video. Using a fully controlled IP test bed (Hillestad et al., 2005), we broadcast high-definition video over RTP/UDP, and use an IP network emulator to introduce a varying amount of randomly distributed packet loss. A high-performance network interface monitoring card is used to capture the video packets into a trace file. Purpose-built software parses the trace file, analyzes the RTP stream and assembles the correctly received NAL units into an H.264/AVC Annex B byte stream file, which is subsequently decoded by JVT JM 10.1 reference software. The proposed measurement setup is a novel, practical and intuitive approach to perform error resilience testing of real-world H.264/AVC broadcast applications. Through a series of experiments, we evaluate some of the error resilience features of the H.264/AVC standard, and see how they perform at packet loss rates from 0.01 % to 5%. The results confirmed that an appropriate slice partitioning scheme is essential to have a graceful degradation in received quality in the case of packet loss. While flexible macroblock ordering reduces the compression efficiency about 1 dB for our test material, reconstructed video quality is improved for loss rates above 0.25%. 相似文献
96.
高职院校产教结合的误区分析及对策研究 总被引:1,自引:0,他引:1
王寿斌 《九江职业技术学院学报》2006,(2):13-15
高等职业教育既不同于以学术研究为特色的普通高等教育,又与重在培养学生专业技能的中等职教有本质的区别。高等职教培养大专厦以上文化层次的技术型、操作型、应用型人才的办学宗旨,决定了高职办学必须走校企合作之路,高度重视产教结合工作。研究当前产教结合工作的误区和对策,对于促进高等职教健康、快速、持续发展大有裨益。 相似文献
97.
98.
99.
Kristina Danielsson 《Scandinavian Journal of Educational Research》2013,57(4):427-457
The impact of high (e.g. syntax and semantics) and low (graphemes) linguistic levels in 50 Swedish beginners' oral reading of running texts is explored, by means of a qualitative analysis of reading errors collected in a longitudinal study. The hypothesis, based on previous quantitative results from the same data, was that the graphemic and/or lexical levels could explain some of the reading errors, but that, for example, syntactic complexity or unexpected contexts could explain others. Unfamiliar words and words with complex graphemic structures did result in many reading errors, but a relatively large number of errors seem to be caused by, for example, syntactical or contextual constraints. In the longitudinal perspective, the readers tended to advance through various phases regarding their utilisation of higher linguistic levels, revealing a possible transition from a concentration mainly on the graphemic level via a dependency on and finally a sensitivity to context. 相似文献
100.