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51.
卢婕 《南昌教育学院学报》2013,(2):130-131
母语对二语学习产生的不良影响被称之为母语负迁移。本文分析了中国学生的在语音、词汇、和句法三个层面的母语负迁移而导致的"中式英语"现象,并提出了相应的教学策略来纠正"中式英语"。 相似文献
52.
英语外来词语的源语分布研究发现8%的英语外来语来自日语。通过采用PEST分析法对这一现象进行分析,可以从宏观上把握日语对英语产生影响的环境并对这一现象对英语词汇的发展产生的影响做出整体评价。 相似文献
53.
《Journal of The Franklin Institute》2019,356(12):6741-6756
This paper presents general, closed-form, and exact expressions for cumulative distribution function, probability density function and average value for the ratio of independent η-μ random variables, with arbitrary parameters. More specifically, the outage capacity with peak interference power constraint, the delay-limited capacity, and the ergodic capacity considering constraints on the interference power are derived for non-homogeneous environments containing multipath waves clusters. Numerical curves are presented to evaluate the effects of the general fading variables in spectrum sharing systems. Besides, the results are validated by performing Monte-Carlo simulations. Notably, the provided results find important applications in cognitive radio systems considering the spectrum sharing approach and channels modeled by η-μ distribution. 相似文献
54.
《Journal of The Franklin Institute》2019,356(9):4859-4887
In this paper, the exponential stabilization problem of uncertain T–S fuzzy systems with time-varying delay is emulated by fuzzy sampled-data H∞ control. Firstly, a novel suitable Lyapunov–Krasovskii function is constructed, which contains all the information about the sampling pattern. Secondly, a less conservative result is achieved by using an extended Jensen inequality, and purposefully using a compact free weighting matrix. In addition, according to the linear matrix inequality (LMI), some sampled-data H∞ exponential stability sufficient conditions and controller design of T–S fuzzy systems are established. Finally, effectiveness gives some illustrative examples may be used to display the value of the current proposed method as well as a significant improvement. 相似文献
55.
《Information processing & management》2019,56(6):102061
We deal with the task of authorship attribution, i.e. identifying the author of an unknown document, proposing the use of Part Of Speech (POS) tags as features for language modeling. The experimentation is carried out on corpora untypical for the task, i.e., with documents edited by non-professional writers, such as movie reviews or tweets. The former corpus is homogeneous with respect to the topic making the task more challenging, The latter corpus, puts language models into a framework of a continuously and fast evolving language, unique and noisy writing style, and limited length of social media messages. While we find that language models based on POS tags are competitive in only one of the corpora (movie reviews), they generally provide efficiency benefits and robustness against data sparsity. Furthermore, we experiment with model fusion, where language models based on different modalities are combined. By linearly combining three language models, based on characters, words, and POS trigrams, respectively, we achieve the best generalization accuracy of 96% on movie reviews, while the combination of language models based on characters and POS trigrams provides 54% accuracy on the Twitter corpus. In fusion, POS language models are proven essential effective components. 相似文献
56.
《Information processing & management》2019,56(6):102084
We propose a topic-dependent attention model for sentiment classification and topic extraction. Our model assumes that a global topic embedding is shared across documents and employs an attention mechanism to derive local topic embedding for words and sentences. These are subsequently incorporated in a modified Gated Recurrent Unit (GRU) for sentiment classification and extraction of topics bearing different sentiment polarities. Those topics emerge from the words’ local topic embeddings learned by the internal attention of the GRU cells in the context of a multi-task learning framework. In this paper, we present the hierarchical architecture, the new GRU unit and the experiments conducted on users’ reviews which demonstrate classification performance on a par with the state-of-the-art methodologies for sentiment classification and topic coherence outperforming the current approaches for supervised topic extraction. In addition, our model is able to extract coherent aspect-sentiment clusters despite using no aspect-level annotations for training. 相似文献
57.
[目的/意义]打破聚类分析法关系分析的固有模式,从关键词共现网络的结构出发,探讨关键词网络位置对技术间关联关系的影响。[方法/过程]基于ESI数据库2017年5月的更新数据,以电子信息领域的高影响力论文为研究对象,在对该领域进行宏观分析的基础上,依据结构洞和桥结构两种媒介角色理论,基于关键词共现网络分析电子信息领域内各技术的媒介角色,识别各技术之间的内在关联。[结果/结论]研究结果表明,优化研究、智能电网、功率控制、非线性系统、时间延迟、稳定性、同步技术等技术的媒介作用较重要,与多种技术存在关联,对电子信息领域的技术发展有至关重要的作用。媒介角色理论从结构角度出发,将微观的个体间关系与整个网络的宏观结构相结合的分析思路为技术间关联关系的探讨提供了新的视角。 相似文献
58.
[目的/意义]针对P指数不能反映评价对象引文分布的P缺陷,在P指数研究的基础上,提出基于引文分布的指数计算方法。[方法/过程]引入发文-引文分布曲线和学术矩阵表征期刊的引文分布,利用期刊评价的非参数统计方法,通过将引文数据进行分区划分,基于P核和P尾内有引用的论文,采用期刊的平均引文率代表零引用论文的影响,重新定义P指数的计算方法,提出Pnew指数。为避免学科差异对期刊评价的影响,以仅属于Web of Science数据库中电子电气工程类目下有5年影响因子的53种期刊为研究对象,分别统计期刊的影响因子、5年影响因子、H指数、P指数、Pnew指数等指标,并进行相关性及差异性分析,以验证Pnew指数评价的科学性和有效性。[结果/结论]结果表明,Pnew指数与H指数、P指数等多个关键指标的相关性较好。与P指数相比,Pnew指数既延续了其高灵敏度与高区分度的特点,又对P指数相差无几但引用分布大不相同的期刊有更好的显示度和辨识度,而且能够矫正引文分布对P指数评价的偏差。 相似文献
59.
民办高等教育是伴随我国高等教育大众化的过程而逐渐发展起来的,其成长于高等教育供不应求的历史背景。在其发展过程中,未能建立起足够的品牌吸引力与公办本科院校进行竞争。随着高等教育供求逐渐平衡和供大于求转变,民办本科院校陷入困境。为求脱困,民办本科院校应立足其资源,定位于应用型本科教育,拓展校企合作深度,并扎根于市场,构建出自己独特的品牌吸引力。 相似文献
60.
毕业论文撰写是每个高校学生的必修环节,本文以电子科技大学学士学位论文撰写要求为例给出了运用Microsoft公司的Word组件完成毕业论文排版的全过程及相关技巧,使得学生能高效、规范地排版毕业论文。 相似文献