远程开放教育英语学习者辍学研究

本研究针对广东地区远程开放教育英语本科辍学者,采用个体访谈形式调查、剖析辍学者辍学的心理动因,对辍学现象进行全方位的深描,试图通过辍学者的个人体验和意义阐释,探求远程英语学习者的辍学原因。对访谈内容采用内容分析方法进行分析。研究发现,影响远程开放教育英语本科学习者放弃学业的主要因素是:情感在场的影响、情感交互程度低、工学矛盾。本研究试图为远程教育实践机构有的放矢地制定相关措施,减少辍学人数提供有益参考。     

“生活”与“生命”的延异变奏——对沈从文《八骏图》“八骏”的一种质疑

沈从文以＂生活＂为墙面,以＂生命＂为扶梯,尽是对＂人＂（人性）浓情的观释和凝情的求解。从＂生活＂与＂生命＂的双重叠错视角对沈从文小说《八骏图》作深层剖析,通过对＂八骏＂习常定论的质疑,深挖出潜在的真确写作意旨。     

伊本·路西德的认识论和社会伦理观

伊本·路西德是阿拉伯中世纪最伟大的哲学家,他认为真理具有可知性,人的认识是从个别到一般,从感性到理性;他继承先哲,完整系统地论述了双重真理论,力图在调和哲学和宗教的同时,提升哲学的地位,强调理性的作用;他的理想社会理论虽然带有若干空想的成分,但有些思想在今天仍有其理论意义和现实价值。     

谈钱理群之《曹禺戏剧生命的创造与流程》

钱理群先生秉着＂作家的文学史研究＂这一多向、多维的理论研究方法,对曹禺及其戏剧作品作了一次＂心灵史＂的精神巡礼。其批评措语中存在一些错谬及疏漏处,作为批评的批评,对其中的一些缺欠问题进行探源性的思考和驳难。     

The etiology of mathematical self-evaluation and mathematics achievement: understanding the relationship using a cross-lagged twin study from age 9 to 12

The genetic and environmental origins of individual differences in mathematical self-evaluation over time and its association with later mathematics achievement were investigated in a UK sample of 2138 twin pairs at ages 9 and 12. Self-evaluation indexed how good children think they are at mathematical activities and how much they like those activities. Mathematics achievement was assessed by teachers based on UK National Curriculum standards. At both ages self-evaluation was approximately 40% heritable, with the rest of the variance explained by non-shared environment. The results also suggested moderate reciprocal associations between self-evaluation and mathematics achievement across time, with earlier self-evaluation predicting later performance and earlier performance predicting later self-evaluation. These cross-lagged relationships were genetically rather than environmentally mediated.     

浅析网络环境下高职院校的学生思想政治教育

网络技术的迅猛发展对高职院校的思想政治教育工作产生了强烈的＂双刃剑＂效应。面对高职院校网络思想政治教育人才缺乏、投入不足,造成高职院校在基础理论研究滞后、技术应用不够充分、内容和形式的创新不够等问题,高职院校思想政治教育工作者必须抓住机遇,大胆创新,力求实效,努力开创高校思想政治教育工作的新局面。     

汉康液的抗氧化作用及对SOD活力的影响

小鼠给予汉康液2.0g/kg/日,连续灌胃22天,结果表明该液能明显降低小鼠血清中丙二醛(MDA)含量,并对血清超氧化物歧化酶(SOD)活性有显著增强作用。     

突出"课程"要素保障教学质量——华威大学教学质量内部保障体系研究

华威大学是一所在短时间内迅速崛起的新大学,它的成功与其教学质量内部保障体系关系密切.本文在对华威大学教学质量保障体系的目标、组织构架、保障方法等进行分析的基础上,总结出其教学质量保障体系的几个突出特点:切合实际的质量目标、高效的组织结构、紧紧围绕"课程"保障教学质量的方法,并将这种突出强调"课程"要素的质量保障体系归纳为"课程型"质量保障模式.     

短小芽孢杆菌β-内酰胺酶基因的克隆

以质粒pSC101为载体,用鸟枪法将短小芽孢杆菌A3染色体的β—内酰胺酶基因,克隆至大肠杆菌HB101。经质粒检测及酶切电泳分析证明,克隆的β—内酰胺酶基因位于2.6kb的EcoRI片段上,将此片段连接到质粒PAL32转化枯草杆菌,亦能表达并向胞外分泌β—内酰胺酶。     

Investigation on apoptosis of neuronal cells induced by Amyloid beta-Protein

Objective: To construct a PC12 cell strain with neuronal differentiation, and observe the apoptosis and pro-liferation activity effects induced these cells by Amyloid beta-Protein (Aβ-43). Methods: 1) PC12 cells in logarithmicgrowth phase were subcultured for 24 h. After the culture fluid was changed, the cells were treated with Rat-β-NGF andcultured for 9 days. 2) Neuronal differentiation of PC12 cells in logarithmic growth phase were divided into four groups:control group (0), experimental group (1), experimental group (2) and experimental group (3). The concentrations of Aβ inthe four groups were 0 μmol/L, 1.25 μ mol/L, 2.5 μ mol/L and 5 μmol/L, respectively. The cells were harvested at 24, 48 and72 h later and stained with AnnexinV-FITC/PI after centrifugation and washing. Then flow cytometry was conducted toexamine the apoptosis percentage. 3) NGF-induced PC12 cells were selected and Aβ with different concentrations wasadded. The final concentrations of Aβ were 0 μmol/L, 1.25 μmol/L, 2.5 μmol/L and 5 μ mol/L, respectively. After the cellswere incubated in an atmosphere of 5% CO2 at 37 ℃ in an incubator for 72 h, the OD values were examined. Results: 1)Neuronal differentiated PC 12 cell lines were successfully established. 2) Flow cytometric examination indicated that Aβ(1.25, 2.5, and 5.0 μmol/L) could effectively induce apoptosis of neuronal-differented cells at the 24 h, 48 h and 72 h timepoints. 3) Aβ (0-5.00 μ mol/L) had no obvious effect on proliferation or restraining of the neuronal differentiation of thePC 12 cells after a 72 h interacting process. Conclusion: This investigation revealed successful neuronal differentiation of thePC12 cell strain. The induction of apoptosis of the neurocytes by various concentrations of Aβ was observed and the in-fluence of Aβ on induced proliferation of PC 12 cells by Rat-β-NGF was revealed. This study -05 provide basis for futureresearch on the molecular cure of AD and interdiction of AD evolution.