科学实验具备的几个特点

本文对科学实验的特点进行总结和归纳，对以后的实验研究工作者及学习者都有一定的指导意义。     

Automatically extracting sheet-metal features from solid model

With the development of modern industry,sheet-metal parts in mass production have been widely applied in mechanical,communication,electronics,and light industries in recent decades; but the advances in sheet-metal part design and manufacturing remain too slow compared with the increasing importance of sheet-metal parts in modern industry. This paper proposes a method for automatically extracting features from an arbitrary solid model of sheet-metal parts; whose characteristics are used for classification and graph-based representation of the sheet-metal features to extract the features embodied in a sheet-metal part. The extracting feature process can be divided for valid checking of the model geometry,feature matching,and feature relationship. Since the extracted features include abundant geometry and engineering information,they will be effective for downstream application such as feature rebuilding and stamping process planning.     

钱锺书论李贺诗旨赘证

李贺《高轩过》有“笔补造化天无功”一语,钱锺书认为其语“可以作为他的自我评赞”。章府为,“笔补造化”的动机是李贺人生难堪的遭际。“笔补”是李贺对自身生生活缺陷的补偿。     

一种新的基于SVM相关反馈的图像检索算法

提出了一种结合颜色和形状特征的图像检索方法,针对传统基于内容图像检索不能很好满足用户需求的问题,提出了一种基于支持向量机（SVM）的相关反馈算法来捕捉用户的检索意图。实验结果证明,算法能发挥用户在检索过程中的作用,具有较好检索性能。     

A novel personality detection method based on high-dimensional psycholinguistic features and improved distributed Gray Wolf Optimizer for feature selection

Existing personality detection methods based on user-generated text have two major limitations. First, they rely too much on pre-trained language models to ignore the sentiment information in psycholinguistic features. Secondly, they have no consensus on the psycholinguistic feature selection, resulting in the insufficient analysis of sentiment information. To tackle these issues, we propose a novel personality detection method based on high-dimensional psycholinguistic features and improved distributed Gray Wolf Optimizer (GWO) for feature selection (IDGWOFS). Specifically, we introduced the Gaussian Chaos Map-based initialization and neighbor search strategy into the original GWO to improve the performance of feature selection. To eliminate the bias generated when using mutual information to select features, we adopt symmetric uncertainty (SU) instead of mutual information as the evaluation for correlation and redundancy to construct the fitness function, which can balance the correlation between features–labels and the redundancy between features–features. Finally, we improve the common Spark-based parallelization design of GWO by parallelizing only the fitness computation steps to improve the efficiency of IDGWOFS. The experiments indicate that our proposed method obtains average accuracy improvements of 3.81% and 2.19%, and average F1 improvements of 5.17% and 5.8% on Essays and Kaggle MBTI dataset, respectively. Furthermore, IDGWOFS has good convergence and scalability.     

Where I’m from? Third Culture Kids about their cultural identity shifts and belonging

This study explored the affect of Third Culture Kids (TCKs) towards their home and host culture(s) and how this affect may indicate possible cultural identity shifts as distinguished in Sussman’s (2000) cultural identity shift model. To this end, the method of poetic inquiry was used. The poems were concerned with TCKs’ affective experiences (Prendergast, 2009). We also investigated whether TCKs described their belonging in terms of personal relationships rather than in terms of geographical locations.Twenty TCKs, ranging in age from 26 to 70 years and from five ‘home cultures’, expressed their early cross-cultural experiences through the free verse poem of “Where I’m from”. A mixed method approach of qualitative and quantitative research was applied, by combining poetic inquiry using a free verse poem format and clustering these data by means of coding in Atlas.ti. TCKs’ poems were analyzed using belonging, affect, and practices-food-nature-events as key codes.Findings revealed that TCKs expressed stronger positive affect towards their host cultures than towards their ‘home’ cultures, indicating a subtractive cultural identity shift. We also found that TCKs defined their belonging more in terms of personal relationships than in terms of geographical locations. This study shows that TCKs’ sense of belonging seems more related to the question who than where I am from.     

基于点击流数据的用户近期兴趣视图生成方法

利用点击流数据综合分析用户点击行为，同时考虑用户对所点击页面的浏览行为和具体内容，分别引入操作行为权重和特征词条权重，提出一种基于点击流数据的用户近期兴趣视图生成方法。     

词位标注汉语分词技术详解

近年来基于字的词位标注的方法极大地提高了汉语分词的性能,该方法将汉语分词转化为字的词位标注问题,借助于优秀的序列标注模型,基于字的词位标注汉语分词方法逐渐成为分词的主要技术路线。本文简要介绍了词位标注汉语分词的基本思想,探析了基于条件随机场实现词位标注汉语分词的机理,并对采用四词位标注集,使用CRF＋＋0.53工具包实现字串序列词位标注进行了详解。最后在Bakeoff2006的评测语料上进行了封闭测试。     

基于内容结构的网络Flash动画检索方法

Flash动画作为一种喜闻乐见、深受青少年和儿童喜爱的多媒体形式在互联网中广泛传播,成为不可或缺的网络多媒体信息资源。基于内容结构特征检索网络Flash动画的方法,既可以利用Flash动画的名称、内嵌文本的     

浅析中学历史教学中的审美教育

本文对美和审美的定义和作用做适当阐述，结合课程改革中对审美教育的要求，阐述了在中学历史教学中实行审美教育的必要性和可行性，就实施审美教育进而培养学生的审美能力的具体方法和手段做了一定探讨，并进一步揭示了实施审美教育带来的现实作用。