基于数据挖掘的远程学习者网上学习行为研究

接受远程教育的学生基本都是在职人员,他们在学习能力、学习信心等方面相对较差,而远程教育的学习环境对学生的自主学习能力要求却比较高,因此在远程教育中,需要通过技术手段较全面地记录学习者在自主学习过程中的学习数据,通过适合的数据挖掘方法掌握学生的自主学习行为特征等现状,为教师及教学管理人员提供有目的引导学生学习的依据,逐步培养学生的学习能力,保证远程教育的质量。     

大学生思想政治教育方法改革探微

当代大学生是在理想世界、现实世界和虚拟世界的综合作用下成长起来的,其思想变化和行为活动具有一定的规律性特征。据此可在工作实践中摸索总结出若干思想政治教育方法改革的基本经验。把握这些基本经验,能提高思想政治教育的针对性、有效性和吸引力、感染力。     

中国东部沿海地区义务教育阶段城乡课堂环境差异

Totally 789 students from 18 schools (9 primary schools and 9 junior high schools) at a medium managed level from Shanghai, Wenzhou, and Aojiang, which are located in the Eastern coastal developed areas of China were investigated with the questionnaire of Hong Kong Classroom Environment Scale in this study. The result indicates that the actual classroom environment in the Eastern coastal developed areas at the present stage of curriculum reform is as follows. (1) The satisfaction of the students is above the average. Teachers’ involvement and support are higher than collaboration, classroom order and the student involvement. (2) There are significant differences between urban and rural areas. The big cities are better than the middle-sized cities, while the latter are better than the counties in the aspects of collaboration, teacher involvement and support. The big cities are better than counties, but the counties are better than the middle-sized cities in the aspects of classroom order and student involvement. (3) The three main types of the actual classroom environment are high, middle and low ones, which distribute in a descending way in big cities, middle-sized cities and counties. (4) Per capita GDP of a region is a main factor affecting classroom environment. __________ Translated from Jiaoyu Xuebao 教育学报(Journal of Educational Studies), 2007, 3(3): 77–85     

关于商事信用的若干思考

商事信用是商法的一个基本范畴,是信用在商事领域的具体体现。本文从商法的角度对商事信用进行了以下几个方面的简单阐述:对于商事信用的内涵,从“商“的角度进行剖析,阐明其与商主体的关系;商法中关于维护商事信用的制度;在信用缺失的今天,对商事信用的规制构想。     

Vertical distribution of sediment concentration

A simple formula is proposed to predict the vertical distribution of a suspended load concentration in a 2D steady turbulent flow. The proposed formula significantly improves the well-known Rouse formula where sediment concentration has an infinitely large value at the channel bottom and a zero value at the water surface. Based on this formula and the logarithmic velocity profile, a theoretical elementary function for the transport rate of a suspended load is developed. This equation improves the Einstein equation in which the unit-width suspended sediment discharge must be solved by numerical integration and a contradiction between the lower limit of the integral and that of velocity distribution exists.     

未成年人校园暴力犯罪的刑法规制探析

近年来,未成年人校园暴力犯罪呈低龄化趋势。从刑法基础理论出发,总结当前未成年人校园暴力犯罪的特征,阐述规制未成年人校园暴力犯罪的理论基础,剖析未成年人校园暴力犯罪刑法规制的缺陷与不足,提出增加规制校园暴力犯罪的专门立法和司法解释;优化对未成年人校园暴力犯罪案件的司法适用等建议,预防和矫正未成年人校园暴力犯罪,充分发挥刑法“惩治犯罪”与“保障人权”的作用。     

论勘察思想政治教育基础理论的基础

新时代思想政治教育创新发展呼唤思想政治教育基础理论建设。思想政治教育基础理论的“基础”问题是思想政治教育基础理论研究中的基础,应作为普遍推进思想政治教育基础理论研究的起点。这是提出勘察思想政治教育基础理论的基础的重要原由。对思想政治教育基础理论中的基础部分以及思想政治教育的存在基础、实践基础、外部基础展开系统勘察,可以将今天研究与学科设立之初研究连接起来,形成思想政治教育理论研究的历史整体,增强思想政治教育的历史唯物主义思维。在勘察中,重视思想政治教育理论史研究,可以培养和促进思想政治教育年轻学者的学术成长。勘察思想政治教育基础理论的基础,要运用科学方法论及方法。这主要有回到历史起点、“向后思维”的方法,运用整体与个别相结合和历史与逻辑相统一的方法。     

Hemin-induced increase in saponin content contributes to the alleviation of osmotic and cold stress damage to Conyza blinii in a heme oxygenase 1-dependent manner

Hemin can improve the stress resistance of plants through the heme oxygenase system. Additionally, substances contained in plants, such as secondary metabolites, can improve stress resistance. However, few studies have explored the effects of hemin on secondary metabolite content. Therefore, the effects of hemin on saponin synthesis and the mechanism of plant injury relief by hemin in Conyza blinii were investigated in this study. Hemin treatment promoted plant growth and increased the antioxidant enzyme activity and saponin content of C. blinii under osmotic stress and cold stress. Further study showed that hemin could provide sufficient precursors for saponin synthesis by improving the photosynthetic capacity of C. blinii and increasing the gene expression of key enzymes in the saponin synthesis pathway, thus increasing the saponin content. Moreover, the promotion effect of hemin on saponin synthesis is dependent on heme oxygenase-1 and can be reversed by the inhibitor Zn-protoporphyrin-IX(ZnPPIX). This study revealed that hemin can increase the saponin content of C. blinii and alleviate the damage caused by abiotic stress, and it also broadened the understanding of the relationship between hemin and secondary metabolites in plant abiotic stress relief.     

中小学中层干部应具备的素养

学校中层干部是学校发展的中坚力量,在促进学校内部治理体系和治理能力现代化中担负重要职责。如何发挥学校中层干部作为校长助手和学校发展推手的重要作用,使之成为落实学校办学理念,促进学校发展变革的支撑力量,是每一位中小学校长需要思考的问题。中层领导干部的素养可以从政治站位、责任担当、大局意识和学习能力等方面来加以提升。