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关键词： 高等数学   线上线下   混合式教学模式  

摘要： 大学中高等数学作为一门核心基础课程起着至关重要的作用,提升学生的逻辑思维能力、实际应用能力、自学和创新能力。为加强课堂教学效果,相较于传统数学课堂教学模式,本文引入线上线下混合式教学模式,线下教学为主,线上教学和课后延申为辅,改善高等数学教学课堂,激发学生兴趣。

关键词： 高等数学   创造性思维能力   数学领域  

摘要： 伴随着高校教育改革发展步伐的不断加快,越来越多的教师开始在高等数学教学实践中培养学生的创造性思维能力,以此来满足创新型人才的构建需求。基于此,本文重点探讨的是如何在高等数学教学中培养和强化学生的创造性思维能力,首先剖析培养学生创造性思维的意义,其次梳理目前在高等数学教学中这一能力培养时所存在的问题,而后提出相应的策略建议,以期可以为教师在开展高等数学实践活动时培养和强化学生创造性思维能力提供强有力的参考借鉴价值。

关键词： 微积分   高等数学   GeoGebra软件   教学改革  

摘要： 高等数学,又称微积分,是现代科学的重要基础.但是由于高等数学理论抽象,难度较大,致使很多学生产生畏惧心理,学习兴趣缺失.利用GeoGebra软件进行信息化辅助教学,实现数学可视化和动态演示,使学生能够直观地理解各种数学概念,有利于微积分思想的体现.文章介绍了基于GeoGebra软件辅助教学的一些案例,涵盖了微积分学的主要概念,例如极限、微分、定积分和重积分等.通过信息化辅助教学,可以使学生们更深刻地理解微积分中的数学思维,提高空间想象力,激发学习兴趣,加快了从初等数学的有限空间平稳过渡到高等数学的广维世界.

关键词： Packer identification   Function call graph   Feature extraction   Machine learning   Static analysis  

摘要： Most malware employs packing technology to escape detection;thus, packer identification has become increasingly important in malware detection. To improve the accuracy of packer identification, this article analyses the differences in the function call graph (FCG) and file attributes between the non-packed executable files and the executable files packed by different packers, and further proposes a 2-stage packer i dentification method based on FCG and file attributes (2-SPIFF). In 2-SPIFF, the detection model of stage I distinguishes non-packed executable files from packed executable files based on the graph features extracted from the FCG, while the identification model of stage II identifies the packer used for packing the original executable file by using the concatenated features extracted from the FCG and file attributes. The experimental results show that 2-SPIFF can achieve an accuracy of 99.80% for packer detection and an accuracy of 98.49% for packer identification.

关键词： 高等数学  

ISBN: (纸本)9787564198701

摘要： 本书内容分为极限与连续、一元函数微分学、一元函数积分学、多元函数微分学、二重积分与三重积分、曲线积分与曲面积分、空间解析几何、级数、微分方程等九个专题，每个专题含“基本概念与内容提要“竞赛题与精选题解析”与“练习题”三个部分。

关键词： 高等数学   研究生   入学考试   习题集  

ISBN: (纸本)9787568295888

摘要： 1.题有点多，不过我相信按照计划一步一个脚印，一定会成功上岸的。2.看了第一章的内容，学到了很多知识，强烈推荐。3.题型挺全，划分也挺清晰，可以用来看哪类题是弱项，超适合我。4.内容全面，解法独特，很好的一本书。5.包装的很严实，感觉很沉，全都是知识的力量啊！6.自己手里已经有老吕的要点精编了，感觉不错所以又买了800题练练手。7.卖家发货也很快，收到包装是完好的，书角也没有破损，满意！8.基本所有的考研书都是买的老吕的书，他的书很有技巧性很强，学起来更系统了。9.讲解很到……

关键词： AA2024   fatigue crack growth prediction   laser heating   laser shock peening   residual stress   weight function  

摘要： This study deals with fatigue crack growth prediction for thin sheet AA2024 specimens with residual stresses introduced through laser shock peening and laser heating treatments. Different weight functions are used to calculate the stress intensity factor due to the presence of residual stresses. A superposition principle is used by calculating the total stress intensity factor considering the applied loads and residual stresses. The fatigue crack growth is predicted using the Paris' law based on the effective stress intensity factor range, in that the effect of residual stresses is considered by changing the total stress intensity factor ratio. It is concluded, that weight functions are a powerful tool to predict fatigue crack growth in AA2024 containing residual stress fields, as long as the gradient in the loading direction, as induced by laser shock peening and laser heating, is moderate.

关键词： Proteins  

摘要： Exosomes are extracellular membranous nanovesicles that carry functional molecules to mediate cell-to-cell communication. To date, whether probiotics improve the immune function of broilers by plasmal exosome cargo is unclear. In this study, 300 broilers were allocated to three treatments: control diet (CON group), control diet + dexamethasone injection (DEX group), and control diet containing 1 x 10(8) cfu g(-1) P8 + DEX injection (P8 + DEX group). The growth performance, meat quality and immune function of plasma and jejunal mucosa were detected. Exosomes were isolated from the plasma and characterized. Then, the exosome protein profile was determined by proteomic analysis. Correlation analyses between the exosomal proteins and growth performance, meat quality, immune function were performed. Lastly, the related protein levels were verified by multiple reaction monitoring (MRM). Results showed that P8 treatment increased the growth performance, meat quality and immune function of DEX-induced broilers with immunological stress. Moreover, the average diameters, cup-shaped morphology and expressed exosomal proteins confirmed that the isolated extracellular vesicles were exosomes. A total of 784 proteins were identified in the exosomes;among which, 126 differentially expressed proteins (DEPs) were found between the DEX and CON groups and 102 DEPs were found between the P8 + DEX and DEX groups. Gene ontology analysis indicated that DEPs between the DEX and CON groups are mainly involved in the metabolic process, cellular anatomical entity, cytoplasm, etc. DEPs between the P8 + DEX and DEX groups are mainly involved in the multicellular organismal process, response to stimulus, cytoplasm, etc. Pathway analysis revealed that most of the DEPs between the DEX and CON groups participated in the ECM-receptor interaction, focal adhesion, regulation of actin cytoskeleton, etc. Most of the DEPs between the P8 + DEX and DEX groups participated in the ErbB and PPAR signaling path

关键词： 思政课堂   高等数学   课堂教学  

摘要： 本文主要分析高等数学课程思政课的现状与今后的发展,教师提升自身的人文思政水平,进一步探索高等计算机类高等数学数学课程思政建设,课堂教学是思政课程载体,教师应当传授学生知识并且将课程和德育结合在一起,最终落实到德育教学的目标.本文对高中数学课程的探索提供进一步的借鉴和参考,同时展开进一步的叙述.