Virtual Microscopy as a Learning Tool in Brazilian Medical Education

Virtual microscopy (VM) is a widely used teaching method in Medical Education in many developed countries. In Brazil, however, this is not the case for most medical schools, considering Brazilian social inequality and uneven access to technology. Recently, the Covid-19 pandemic has also challenged Universities to seek and make a transition toward more effective methods of full-time online education. Thus, the main goal of this work was to verify student's perception and academic performance, assessed upon VM implementation in a Brazilian Medical School. Ribeirao Preto Medical School students answered a 26-question survey with regards to optical microscopy (OM) and VM. Academic performance was compared between participants that were (year of 2019) or were not (year of 2015) exposed to VM. Taken the results together, subjective impressions such as handling, suitability, learning effectiveness, and pleasure using the tools, have shown a higher score for virtual microscopy (median = 29), when compared to optical microscopy (median = 24) with a P-value < 0.001 by Wilcoxon rank test, upon measurement using an ordinal scale. Regarding academic performance, no statistically significant differences were found between groups (P-value = 0.38, Cohen's d = 0.19). Therefore, VM proved to be adequate to the Brazilian medical education in light of Brazilian social contexts and Covid-19 pandemic.     

海城尚氏宗谱文化探析

海城尚氏祭祖自清初至今已有三百余年。平南王尚可喜于晚年开始着手编著尚氏宗谱,定祖训,及至尚王逝世,宗祠、陵园逐渐修建,尚氏家族的祭祖仪式逐日发展完善。随着时代的发展,尚氏家祭仪式也有所损益,宗谱文化与社会更加契合融汇,具有了更为广泛的文化内涵。     

发菜分布区生态特征分析

根据文献资料和作者多年的研究,对发菜产地的自然环境,例如风、湿度、光线、温度和土壤等地貌特征,进行了综述。分析比较了藻体在休眠期和生长期中,各生态因素的主要不同点,并对微小生物环境对生长的影响做了剖析。最后,阐述了发菜的节律性生长与各生态因素的节律性变化的关系。     

利用搜索引擎在Internet 上进行信息检索 --Google使用方法和性能评价

讨论了在Internet上进行信息检索的一般方法,详细地介绍了搜索引擎Google在信息检索领域的作用和网页搜索、图像搜索、新闻组搜索、主题目录的使用方法,分析归纳了它的逻辑运算能力,以及其他几种杰出的特殊功能,最后对它的性能进行了初步的评价。     

太阳能空间斯特林热机性能的优化分析

建立太阳能驱动的空间斯特林热机的循环模型，应用有限时间热力学理论和太阳能集热器的辐射损失模型，研究受热阻和回热损失影响的太阳能斯特林热机循环性能，导出空间热机效率的基本优化关系，确定太阳能集热器的最佳工作温度和效率界限，讨论各种不可逆性对空间热机性能的影响，所得结论可为太阳能空间斯特林热机的优化设计提供新的理论指导。     

基于智能Agent的个性化信息检索系统

本文通过分析搜索引擎与智能Agent技术的原理,提出了一个基于智能Agent的个性化信息检索系统结构,并详细说明丁组成该系统的信息Agent,用户Agent,学习Agent等主要Agent的功能及实现方法.     

教学投影机的选购和使用

介绍了教学投影机的选购原则和使用注意事项。     

Design considerations for series hybrid active power filter

Some important factors for designing a series hybrid active power filter (SHAPF) are presented in this paper for the case when the load is varied in a wide range and/or the source voltage is seriously distorted. Special design of passive filters, adaptive control of parameter and multi variant control are discussed in detail. The filter is stable, has good performance, and causes small capacitive reactive current. The simulation and experimental results accorded with the theoretical analysis results. Project supported by DELTA Science, Technology and Education Development Fundation for Power Electronics.     

发动机曲柄连杆机构常见问题及维修策略

在发动机维修中,曲柄连杆机构的维修是重中之重,它的维修好坏对发动机的正常工作和使用寿命有很大的影响。文章对发动机曲柄连杆机构常出现的问题进行分析,提出一些正确的使用和维修方法与大家共勉。     

也谈《世说新语》何以不收陶渊明

《世说新语》何以不收陶渊明?宁稼雨教授认为主要是陶氏家族在东晋没有取得世家大族的地位和声望所致。王建国博士商榷说一是与《世说新语》的收录旨趣有关,二是陶渊明那时的地位和影响远非我们现在所想象的那么重要。细较二人研究成果,究其原因主要是陶渊明不是清谈之士,其次还有家世衰微破落、文风平淡等,在当时没有产生广泛的影响和足够的声誉所致。