大学生群体性事件预防中的网络舆情监控探析

大学生作为一个特殊的群体,其自身的特点与网络技术特点的契合,使得他们容易通过网络产生统一的、偏激的舆论情形,从而引发群体性事件。而我国高校在网络舆情监控方面存在的不足,又为这种＂网络——现实＂模式大学生群体性事件的发生提供了可能。因此,要有效预防大学生群体事件的发生,要在网络制度、网络道德的建设,自动化网络监控系统,高校教师的网络舆情监控意识和能力等方面作出努力。     

搅和中的沉淀:一位大学老师在与小学协作的影像课程里的学习

台湾东华大学多元文化教育研究所和花莲县中区一所原住民小学,利用小学综合活动与信息课,协作进行摄影课程活动.透过“叙说探究”取径的照见,示现在这个遭逢里,一位大学老师以“搅和”作为大学与小学教育工作者之间的“协作关系”的历程.这个儿童影像创作方案从结构式的课程转型为生活化的影像活动,鼓励儿童连结家庭照护安排经验与学校学习活动,而儿童透过镜头所捕捉到的部落原住民日常家庭图像,挑战了学校与社会僵化的多元文化想象.庆典化与本质化原住民文化与认同的教育论述,无视再现于儿童影像创作里常民生活氛围.     

反馈研究对改进教育考试分数报告的启示

分数报告是教育评价的关键环节,旨在向考生传递评价结果。分数报告属于学业反馈的范畴,通过控制反馈信息的传递方式对考生进行有效干预,可以促进考生的学业表现。为此须认真分析、借鉴反馈研究成果,改进现有教育考试的分数报告。本文认为,理想的教育考试分数报告应包含丰富的信息,提出认知策略的改进建议,通过内置启发性的问题引发学习者反思,并采用积极的反馈效价,从而促进考生的学习与发展。     

Effect of epidermal growth factor on follicle-stimulating hormone-induced proliferation of granulosa cells from chicken prehierarchical follicles

The development of ovarian follicular cells is controlled by multiple circulating and local hormones and factors, including follicle-stimulating hormone (FSH) and epidermal growth factor (EGF). In this study, the stage-specific effect of EGF on FSH-induced proliferation of granulosa cells was evaluated in the ovarian follicles of egg-laying chickens. Results showed that EGF and its receptor (EGFR) mRNAs displayed a high expression in granulosa cells from the prehierarchical follicles, including the large white follicle (LWF) and small yellow follicle (SYF), and thereafter the expression decreased markedly to the stage of the largest preovulatory follicle. SYF represents a turning point of EGF/EGFR mRNA expression during follicle selection. Subsequently the granulosa cells from SYF were cultured to reveal the mediation of EGF in FSH action. Cell proliferation was remarkably increased by treatment with either EGF or FSH (0.1–100 ng/ml). This result was confirmed by elevated proliferating cell nuclear antigen (PCNA) expression and decreased cell apoptosis. Furthermore, EGF-induced cell proliferation was accompanied by increased mRNA expressions of EGFR, FSH receptor, and the cell cycle-regulating genes (cyclins D1 and E1, cyclin-dependent kinases 2 and 6) as well as decreased expression of luteinizing hormone receptor mRNA. However, the EGF or FSH-elicited effect was reversed by simultaneous treatment with an EGFR inhibitor AG1478. In conclusion, EGF and EGFR expressions manifested stage-specific changes during follicular development and EGF mediated FSH-induced cell proliferation and retarded cell differentiation in the prehierarchical follicles. These expressions thus stimulated follicular growth before selection in the egg-laying chicken.     

新世纪自学考试存在的主要问题及其补正

当前,自考存在着教育功利主义及应试教育倾向,存在着专业课程设置僵化、考试评价方式和自学媒体单一等弊端。新世纪,必须进一步改革和完善自考制度,明确教育培养目标,克服自考的应试教育倾向,改革考试内容,建立多元化评价体系,实行开放的课程设置体系,加强对自学媒体的建设,以促进考生综合素质的提升和全面发展。     

焦虑情绪和适应能力对大学新生学习生活的影响

采用焦虑自评量表和心理适应性自测量表对67名大学新生进行三次心理健康状况调查,结果显示有一般心理问题的学生占28.36%;有严重心理问题的学生占6.00%。焦虑产生的原因有生理需要不满足、安全感缺失、没有归属感、实现自我价值有压力。高校可以通过素质教育,加强校园文化建设,提高学生的适应能力,完善心理健康教育系统,缓解大学生的心理焦虑。     

浅议高校大学生群体性突发事件的预防管理

因社会因素、学校教育管理因素、学生自身因素等原因,高校大学生群体性突发事件时有发生,严重影响了高校的安全稳定。高校应增强危机意识,建立大学生群体性突发事件的识别、研判等机制,加强教育,提高管理水平,建立通畅的学生群体利益表达渠道,努力构建和谐校园文化,有效预防大学生群体性突发事件的发生。     

Lumped parameter model for resonant frequency estimation of a thermoacoustic engine with gas-liquid coupling oscillation

Gas-liquid coupling oscillation is a novel approach to reducing the resonant frequency and to elevating the pressure amplitude of a thermoacoustic engine. If a thermoacoustic engine is used to drive low-frequency pulse tube refrigerators, the frequency matching between the thermoacoustic engine and the refrigerator plays an important role. Based on an acoustic-electric analogy, a lumped parameter model is proposed to estimate the resonant frequency of a standing-wave thermoacoustic engine with gas-liquid coupling oscillation. Furthermore, a simplified lumped parameter model is also developed to reduce the computation complexity. The resonant frequency dependence on the mean pressure, the gas space volume, and the water column length is computed and analyzed. The impact of different working gases on the resonant frequency is also discussed. The effectiveness of the models is validated by comparing the computed results with the experimental data of the gas-liquid coupling oscillation system. An increase in the mean working pressure can lead to a rise in the resonant frequency, and a lower resonant frequency can be achieved by elongating the liquid column. In comparison with nitrogen and argon, carbon dioxide can realize a lower frequency due to a smaller specific heat ratio.     

微观经济学理解力的中日差异研究——基于TUCE-4测试结果的量化分析

本文通过调查中国和日本大学生微观经济学的理解力现状,分析了中日两国大学生的微观经济学理解力的差异与其样本特征的关系,进一步从微观经济学内涵角度分析了中日大学生的差异,并对中国的经济学教育提出了改进的建议.