Modeling Basic Writing Processes From Keystroke Logs

The goal of this study is to model pauses extracted from writing keystroke logs as a way of characterizing the processes students use in essay composition. Low‐level timing data were modeled, the interkey interval and its subtype, the intraword duration, thought to reflect processes associated with keyboarding skills and composition fluency. Heavy‐tailed probability distributions (lognormal and stable distributions) were fit to individual students' data. Both density functions fit reasonably well, and estimated parameters were found to be robust across prompts designed to assess student proficiency for the same writing purpose. In addition, estimated parameters for both density functions were statistically significantly associated with human essay scores after accounting for total time spent writing the essay, a result consistent with cognitive theory on the role of low‐level processes in writing.     

CASIO fx-4500P计算器在建筑工程测量中的应用(下)

9.1 计算导线转折角和 计算器全清零后,找到文件名“GZJH”,进行如下操作:     

"专题讨论"在哲学教学中的运用和意义

“专题讨论”在哲学教学中的运用,充分体现了哲学和哲学教学的精神,充分调动了 教师的主导作用和学生的主体作用,有利于培养学生的科学精神,有利于培养学生的辩证思维 和创新思维。     

性别语言差异的“面子理论”阐释

性别语言差异研究是语言与性别关系研究的一个重要方面,这种研究不仅有助于社会文化的研究,而且还有助于预测语言的发展趋势和制定文字政策。笔者在概括相关研究成果的基础上,从面子角度入手,探讨语言的使用问题,特别是男性和女性在语言的使用中所反映出来的性别语言差异。     

Research advances in bioactive components and health benefits of jujube (Ziziphus jujuba Mill.) fruit

Jujube(Ziziphus jujuba Mill.), a highly nutritious and functional fruit, is reported to have various health benefits and has been extensively planted worldwide, especially in China. Many studies have shown that bioactive components derived from jujube fruit have significant nutritional and potential biological effects. In this paper, the latest progress in research on major bioactive compounds obtained from jujube is reviewed, and the potential biological functions of jujube fruit resources are discussed. As a dietary supplement, jujube fruit is well recognized as a healthy food which contains a variety of bioactive substances, such as polysaccharides, polyphenols, amino acids, nucleotides, fatty acids, dietary fiber, alkaloids, and other nutrients. These nutrients and non-nutritive phytochemicals obtained from jujube fruit have physiological functions including anticancer, antioxidant, anti-inflammatory, anti-hyperlipidemic, anti-hyperglycemic, immunoregulatory, neuroprotective, sedative,and antiviral functions. Of note is that new constituents, including alkaloids, dietary fiber, and other bioactive substances, as well as the antiviral, hypoglycemic, lipid-lowering, and neuroprotective effects of jujube fruit, are systematically reviewed here for the first time. Meanwhile, problems affecting the exploitation of jujube fruit resources are discussed and further research directions proposed. Therefore, this review provides a useful bibliography for the future development of jujube-based products and the utilization of jujube nutritional components in functional foods.     

高等学历继续教育专业建设内涵式发展研究

在高等教育普及化的背景下,面对人才培养质量不高、内涵缺失等问题,走内涵式发展道路是我国高等学历继续教育发展的必由之路.高校应将提升专业建设质量视为发展高等学历继续教育的必然要求.专业建设内涵式发展以提升人才培养质量为目标,以合理设置专业、稳定招生规模、建立制度规范、严控毕业审核为基础,以制作优质资源、打造教师团队为核心,以落实质量监控为关键,以推进联盟合作为促进.专业建设内涵式发展重要途径是以政府统筹为引领、以社会需求为导向、以课程建设为重点、以优势特色为方向、以评估评价为保障.     

时政新闻创新研究

时政新闻是媒体重要的新闻资源,特别是党报和电视等媒体,天天都要采集和发布。然而,多年来形成的一些模式,严重地影响了时政新闻的有用性,更多的时政新闻变成了“流水账”、“记事簿”,离读者和受众渐行渐远。因此,时政新闻的创新是一个急待研究的课题。     

Designing Bézier surfaces minimizing the L2-norm of the Gaussian curvature

In freeform surface modelling, developable surfaces have much application value. But, in 3D space, there is not always a regular developable surface which interpolates the given boundary of an arbitrary piecewise smooth closed curve. In this paper, tensor product Bézier surfaces interpolating the closed curves are determined and the resulting surface is a minimum of the functional defined by the L2-integral norm of the Gaussian curvature. The Gaussian curvature of the surfaces is minimized by the method of solving nonlinear optimization problems. An improved approach trust-region form method is proposed. A simple application example is also given.     

浅议高校双语教学的实施

随着经济全球化和社会经济的发展，要求培养越来越多复合型的国际化人才。为了满足我国社会经济的发展需求，国家教育部早在入世之前就提出了在高等学校推行双语教学以促进教育改革，为国家培养厚基础、宽口径、高素质的复合型人才。本文着重阐述高校双语教学实施的目的、原则以及推行双语教学的具体做法。     

英语称谓形式的民俗文化蕴涵

英语的称谓形式虽然没有汉语称谓形式那么复杂，但使用起来却也非常讲究，因为它反映的是英语国家的一种民俗。只有熟知这些习惯、选用得体才能在英语社会特定的语境中将汉语特有的称谓形式转换为规范的英语称谓形式。