经管类高等数学教学探索

本文结合高等数学教学在经管类专业的日益重要性以及我校经管类高等数学教学的实际情况,对高等学校经管类高等数学的教学提出了一些见解。     

Longitudinal study of a cooperation-driven,socio-scientific issue intervention on promoting students’ critical thinking and self-regulation in learning science

ABSTRACT

This longitudinal study explored the effects of a Cooperation-driven Socioscientific Issue (CDSSI) intervention on junior high school students' perceptions of critical thinking (CT) and self-regulation (SR) in Taiwan. Forty-nine grade 7 students were randomly selected as an experimental group (EG) to attend a 3-semester 72-hour intervention; while another 49 grade 7 students from the same school were randomly selected as the comparison group (CG). All participants completed a 4-wave student questionnaire to assess their perceptions of CT and SR. In addition, 8 target students from the EG with the lowest scores on either CT or SR were purposefully recruited for weekly observation. These target students and their teachers were interviewed one month after the intervention in each semester. Analyses of covariance and paired-wise t-tests revealed that the EG students' perceptions of CT and SR in learning science were improved during the study and were significantly better than their counterparts' at the end of the study. Systematic interview and classroom observation results were consistent with the quantitative findings. This study adds empirical evidence and provides insights into how CDSSI can be integrated into planning and implementing effective pedagogical strategies aimed at increasing students' perceptions of CT and SR in learning science.     

生之寂寞与爱与美的叹惋--钱钟书小说的思想意蕴探讨

钱钟书抗战期间的处境、心境及创作动机,使他的小说集中抒发了抗战年月中被战争和人类劣根性合力围困而加剧的人生寂寞,并表达了对战争环境下“无毛两足动物”基于人类自身“根性”而对生命、爱及美的进一步的扭曲、异化、损耗与不珍爱的深切叹惋。     

FRP加固锈蚀钢筋混凝土梁的受弯性能分析(英文)

采用Ansys有限元软件对8根不同锈蚀率的FRP片材加固钢筋混凝土梁的受弯性能进行数值分析,研究纵筋锈蚀率对FRP加固梁的裂纹开展、破坏模式、承载能力以及延性和变形能力的影响.研究结果表明:低钢筋锈蚀率的梁发生受压区混凝土压碎破坏;中等锈蚀率的梁钢筋屈服后,钢筋与混凝土界面发生黏结滑移,最后FRP剥离破坏;高锈蚀率的梁钢筋没有达到屈服强度便发生黏结滑移,最后发生受压区混凝土压碎破坏.钢筋锈蚀越严重,FRP加固钢筋混凝土梁的承载力降低得越多.试件RCB-1(锈蚀率为0)的承载力为115 kN,而试件RCB-7(锈蚀率为20%)的承载力仅为42 kN.与FRP加固未锈蚀的钢筋混凝土梁相比,FRP加固锈蚀钢筋混凝土梁的变形能力较高.试件RCB-1和试件RCB-7的最大跨中挠度分别为20 mm和35 mm,而试件RCB-5(锈蚀率为10%)的最大跨中挠度达到了60 mm.     

界首彩陶图形装饰中线造型解析

通过对线的不同概念的认识,以及它所体现在界首彩陶装饰中所产生的不同艺术特色,来进一步分析阐述线造型的内在特征及其在界首彩陶装饰艺术造型中的独特的民间艺术魅力。     

The impacts of network centrality and self‐regulation on an e‐learning environment with the support of social network awareness

An e‐learning environment that supports social network awareness (SNA) is a highly effective means of increasing peer interaction and assisting student learning by raising awareness of social and learning contexts of peers. Network centrality profoundly impacts student learning in an SNA‐related e‐learning environment. Additionally, self‐regulation behavior significantly influences online learning of students. However, exactly how network centrality and self‐regulation influence learning behavior and effectiveness in an e‐learning environment remains unclear. Therefore, this study investigates how both variables (ie, network centrality and self‐regulation) impact student learning in an SNA‐related e‐learning environment. Analytical results indicate that the student group with high‐level centrality and low‐level self‐regulation more significantly progresses in learning achievement than the other groups. The second finding shows the group also has the highest number of students asking for help, revealing they have the highest system utilization rate.     

基于自适应预测算法的APF无差拍控制方法

有源电力滤波器（active power filter, APF）补偿电流跟踪控制要求具有较高的稳态精度和较快的动态响应速度。文章将自适应预测滤波算法应用于无差拍控制,实现APF补偿电流精确控制。根据APF时域数学模型,推导滤波系统的无差拍控制离散方程;通过自适应(finite impulse response filter, FIR)预测滤波算法实现基波电流预测,消除控制系统的计算延迟,给无差拍控制提供所需的指令电流预测值。对预测算法进行MATLAB仿真,验证预测算法的稳态精度和动态跟踪快速性;实验室样机验证控制实验结果证明所提出的控制策略有效的,具有一定的实用性。     

浅谈物业管理

物业管理也是一项产业,是一种服务性的工作。高校物业管理作为一种社会化的管理模式,是与社会主义市场经济体制的不断深入和完善一致的。实施物业管理的最终目的是实现社会效益,经济效益和环境效益的同步增长。     

基于定向天线无线传感网络的生猪养殖环境监测系统

猪舍的环境对生猪生长和养殖场的经济效益有很大影响。针对养殖环境参数监测过程中存在有建筑物影响,考虑定向天线具有传输距离远、增益高、抗干扰性特点,该文设计了一款基于定向天线适用于生猪养殖环境监测的无线传感网络。节点以传感器节点以MSP430系列单片机作为主控芯片,无线通信采用nRF905射频模块,温湿度采用SHT11数字传感器,有害气体检测采用H2S和NH3传感器,并以该节点为硬件平台编写了通信协议、应用程序和后台管理软件。试验结果表明,该系统性能稳定,传感精度及其环境自动调控均达到实际应用需求。     

科研成果在材料工程专业实验教学中的应用与实践

介绍了科研成果在材料工程专业实验教学中的引入原则和应用,包括原有实验项目的更新,新实验项目的设立,大学生创新实验训练计划等。实践证明,教师科研成果在实验教学中的应用,能够进一步提高学生独立发现问题、分析问题、解决问题的能力,对于优化实验教学内容,培养高质量师资队伍有积极的推动作用。